CN110441191A - Realize the non-maintaining gas density detecting device of density monitor, system and method - Google Patents
Realize the non-maintaining gas density detecting device of density monitor, system and method Download PDFInfo
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- CN110441191A CN110441191A CN201910830225.2A CN201910830225A CN110441191A CN 110441191 A CN110441191 A CN 110441191A CN 201910830225 A CN201910830225 A CN 201910830225A CN 110441191 A CN110441191 A CN 110441191A
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Abstract
The application provides a kind of gas density detecting device for realizing that gas density relay is non-maintaining, including at least one pressure regulating mechanism, at least one gas detection sensor and at least one intelligence control unit, branch is connected at least one in the gas circuit of the pressure regulating mechanism, every branch road is equipped with a foreline valve；The pressure lifting of pressure regulating mechanism is controlled by intelligence control unit, completes the field monitoring to gas density relay, without service personnel to execute-in-place, is realized to the non-maintaining of gas density relay, is greatly improved the efficiency the reliable and secure operation with power grid.Present invention also provides a kind of, and the gas density containing above-mentioned gas density monitoring device monitors system.Present invention also provides a kind of gas density monitoring methods for supporting above-mentioned gas density monitoring device to operate normally.
Description
Technical field
The present invention relates to technical field of electric power more particularly to it is a kind of apply on high voltage electric equipment, realize density relay
The non-maintaining gas density detecting device of device, system and method.
Background technique
Gas density relay is generally used for monitoring and controlling high pressure, the density of middle voltage electrical equipment interior insulation gas,
Inside is equipped with contact point signal control loop, and the gas circuit of gas density relay is connected to the gas chamber of high pressure, middle voltage electrical equipment, works as inspection
Measure when there is gas leakage, the contact movement of gas density relay, generate contact point signal, contact point signal control loop according to
Contact point signal issues alarm or is latched, to realize the safe operation protection of electrical equipment.
Currently, SF6 (sulfur hexafluoride) electrical equipment has been widely used in power department, industrial and mining enterprises, electric power row is promoted
The fast development of industry.In recent years, with rapid economic development, China's power system capacity sharply expands, SF6 electrical equipment consumption
It is more and more.Effect of the SF6 gas in high voltage electric equipment is arc extinguishing and insulation, and SF6 gas is close in high voltage electric equipment
If degree reduces and the exceeded safe operation that will seriously affect SF6 high voltage electric equipment of micro-water content: 1) SF6 gas density is reduces
To the forfeiture that will lead to insulation and arc extinction performance to a certain degree.2) in the presence of some metal objects, SF6 gas is in high temperature 200
With water hydrolysis can occur for DEG C temperatures above, generate active HF and SOF2, etching insulative part and metalwork, and generate a large amount of
Heat increases air chamber pressure.3) when temperature reduces, excessive moisture content is likely to form condensation water, makes insulating part surface insulation
Intensity significantly reduces or even flashover, causes to seriously endanger.Therefore grid operation codes mandatory provision, before putting equipment in service and is transported
In row must all periodic detection be carried out to the bulk density and water content of SF6 gas.
With unattended operation transformer station to networking, digitlization direction develop and to remote control, telemetering requirement constantly add
By force, the on-line monitoring of the gas density of SF6 electrical equipment and micro-water content state has important practical significance.With Chinese intelligence
Energy power grid is constantly greatly developed, important component and key node of the intelligent high-pressure electrical equipment as intelligent substation,
Very important effect is played to the safety of smart grid.High voltage electric equipment is mostly SF6 air insulating device at present, if
Gas density reduces and (such as leaks and cause) electric property that will seriously affect equipment, causes hidden trouble to safe operation.Mesh
Gas density value in preceding on-line monitoring SF6 high voltage electric equipment is very universal, and existing gas density monitors system
(device) is essentially: 1) using the acquisition of telemetering type SF6 gas density is relay realization density, pressure and temperature, it uploads, it is real
Existing gas density on-line monitoring.2) acquisition that density, pressure and temperature are realized using gas density transmitter, uploads, and realizes gas
Volume density on-line monitoring.SF6 gas density is relay is core and critical component.But due to the ring of high voltage substation scene operation
Border is severe, and especially electromagnetic interference is very strong, in gas density monitoring system (device) used at present, telemetering type SF6 gas
Volume density relay is made of mechanical density monitor and electronic long-distance transmission part；In addition, using gas density transmitter
Network system in, all also retain traditional mechanical density monitor.The mechanical density monitor has one group, two groups or three
Group mechanical contact reaches the state of alarm, locking or superpressure in pressure, information is connected circuit by contact in time and is transmitted to mesh
Marking device terminal guarantees equipment safety operation.Monitoring system is also equipped with safe and reliable circuit transmitting function simultaneously, real to realize
When data remote data read with information monitoring establish active platform, the information such as pressure, temperature, density can be transmitted in time
It realizes and monitors on-line to target device (such as computer terminal).
Periodic inspection is carried out to the gas density relay on SF6 electrical equipment, is to prevent trouble before it happens, ensures that SF6 is electrical
The requisite measure of equipment safety reliability service；" electric power preventive trial regulation " and " prevent the 20 of power generation major accident
Five important requirements " it requires and regularly gas density relay is verified.From the point of view of practical operation situation, to gas
It is to ensure one of power equipment safety, necessary means of reliability service that density monitor, which carries out periodic check,.Therefore, SF6 at present
The verification of gas density relay has been paid much attention to and has been popularized in electric system, each power supply company, power plant, large-scale factories and miness enterprise
Industry all has been carried out.And power supply company, power plant, the field-checking detection that large factories and mines enterprises are completion gas density relay
Work need to be equipped with the SF6 gas of tester, equipment vehicle and high value.Including power failure operating loss when detection, slightly
Approximation is calculated, and the testing cost of each high voltage switchyard shared every year about arrives hundreds of thousands member or so tens of thousands of.In addition, testing staff
If field-checking non-standard operation, there is also security risks.For this purpose, being highly desirable in existing gas density relay
On, it is innovated, makes that also there is gas in the monitoring system of the gas density relay for realizing gas density on-line monitoring or composition
The verifying function of volume density relay, and then the periodic check work of (mechanical) gas density relay is completed, without maintenance
Personnel greatly improve the efficiency, reduce costs to scene.It the gas density relay of online self checking or is made from it simultaneously
Monitoring system in can accurately measure electrical equipment plenum interior micro- water number.
Summary of the invention
It is applied on high voltage electric equipment the purpose of the present invention is to provide a kind of, realizes the non-maintaining gas of density monitor
Volume density monitoring device, system and method supervise the gas density of the electrical equipment of gas-insulated or arc extinguishing for solving
While survey, also complete that the on-line testing of gas density relay is improved efficiency, reduces operation expense, ensures power grid
Safe operation.
To achieve the above object, the invention adopts the following technical scheme:
The application first aspect provides a kind of gas density detecting device for realizing that density monitor is non-maintaining.
The application the second aspect provides a kind of gas density monitoring system for realizing that density monitor is non-maintaining, described
System realizes that the non-maintaining gas density detecting device of density monitor is constituted described in first aspect, or including first
The non-maintaining gas density detecting device of realization density monitor described in a aspect.
The gas density detecting device described herein for realizing that density monitor is non-maintaining, comprising:
--- at least one pressure regulating mechanism connects at least one branch in the gas circuit of each pressure regulating mechanism
Road, every branch road are equipped with a foreline valve, and one end of each foreline valve is connected equipped with corresponding electrical equipment
Logical interface, the other end of the foreline valve are equipped with the interface that the gas circuit of corresponding gas density relay is connected；Institute
The gas circuit for stating pressure regulating mechanism is connected with the gas circuit of the gas density relay of each branch, and the pressure regulating mechanism is matched
It is set to the pressure lifting for adjusting the gas circuit of gas density relay of each branch, connects the gas density relay of branch road
Point movement；
--- at least one gas density detection sensor is arranged on the branch road or setting is in pressure adjusting machine
On structure, the gas density detection sensor is connected with the pressure regulating mechanism, for acquire pressure value and temperature value,
And/or gas density value；
--- at least one intelligence control unit is arranged on the branch road, close with foreline valve, the gas of branch where it respectively
Degree detection sensor is connected, and is configured as turning off or on for the foreline valve of branch where controlling it, receives and/or calculate it
Gas density value when the contact of the gas density relay of place branch acts；Alternatively, the intelligence control unit setting exists
Outside the branch, it is connected respectively with the gas density detection sensor of the foreline valve of each branch, each branch, is configured to each
The foreline valve of road sends identical or different control signal, controls turning off or on for each foreline valve, receives and/or calculates and is each
Gas density value when the contact of the gas density relay of branch acts；The intelligence control unit is also adjusted with the pressure
Mechanism is connected, for completing the control of the pressure regulating mechanism.
Preferably, contact point signal is generated when the contact acts, the contact point signal includes alarm, and/or locking.
Preferably, each branch road of the pressure regulating mechanism further includes connecting tube, the connecting tube of each road
One end be equipped with corresponding gas density relay be directly or indirectly connected first connection interface tube, the connecting tube
The other end be equipped with corresponding pressure regulating mechanism gas circuit be directly or indirectly connected second connection interface tube.
It is highly preferred that the foreline valve is located between the first connection interface tube and the second connection interface tube.
Preferably, the pressure regulating mechanism is a sealed gas chamber, and the outside or inside of the sealed gas chamber is equipped with heating
Element, and/or cooling module are caused described close by heating the heating element, and/or being freezed by the cooling module
It holds one's breath the temperature change of indoor gas, and then completes the pressure lifting of the gas density relay.
It is highly preferred that the heating element, and/or the cooling module are semiconductor.
It is highly preferred that the pressure regulating mechanism further includes heat preservation member, the heat preservation member is set to the outer of the sealed gas chamber
Face.
Preferably, when verification, the pressure regulating mechanism is cavity open at one end, the other end of the cavity directly or
The gas circuit of the gas density relay of each branch of indirect communication；There is piston in the cavity, one end of the piston is connected with one
A adjusting rod, the outer end of the adjusting rod connect driving part, and the other end of the piston protrudes into the opening, and with it is described
The inner wall of cavity is in sealing contact, and the driving part drives the adjusting rod and then the piston is driven to move in the cavity
It is dynamic.
Preferably, when verification, the pressure regulating mechanism is a sealed gas chamber, and the inside of the sealed gas chamber, which is equipped with, lives
Plug, the inner wall of the piston and the sealed gas chamber is in sealing contact, and the outside of the sealed gas chamber is equipped with driving part, the drive
Dynamic component pushes the piston to move in the sealed gas chamber by electromagnetic force.
Preferably, the pressure regulating mechanism is the air bag that one end connects driving part, and the air bag is in driving part
Drive lower generating body product variation.
Preferably, the pressure regulating mechanism is bellows, and one end of the bellows is connected to the gas density of each branch
Relay, the other end of the bellows stretch under the driving of driving part.
The driving part in above-mentioned pressure regulating mechanism includes but is not limited to magnetic force, motor (variable-frequency motor or stepping
Motor), reciprocating mechanism, Carnot cycle mechanism, one of pneumatic element.
Preferably, the pressure regulating mechanism is a vent valve, and the vent valve is arranged in a closed gas chamber, or
The vent valve is connect with a closed gas chamber.
It is highly preferred that the pressure regulating mechanism further includes the flow valve for controlling gas release flow.
It is highly preferred that the vent valve be solenoid valve or motor-driven valve or it is other electricity or that realizes by way of gas put
Air valve.
Preferably, the pressure regulating mechanism is a compressor.
Preferably, the pressure regulating mechanism is a pump.It is highly preferred that the pump including but not limited to makes press pump, pressurization
Pump, electric air pump or Electromagnetic air pump.
Preferably, the pressure regulating mechanism is sealed in a cavity or shell.
Preferably, the foreline valve is motor-driven valve.
Preferably, the foreline valve is solenoid valve.
It is highly preferred that the foreline valve is permanent-magnet electromagnetic valve.
Preferably, the foreline valve is piezo electric valve, or is temperature controlled valve, or to be made of intelligent memory material
, the new type of valve opened or closed using electric heating.
Preferably, the foreline valve is hose bending or is pinched mode and realizes and turn off or on.
Preferably, the foreline valve is sealed in a cavity or shell.
Preferably, the foreline valve is closed, and the pressure regulating mechanism boosting, load increase or the pressure adjusts machine
Structure decompression, load reduce, and the pace of change of load is range of each second no more than monitored gas density relay
10‰。
Preferably, the gas circuit two sides of the foreline valve are respectively arranged with pressure sensor；Alternatively, the gas circuit of the foreline valve
Two sides are respectively arranged with pressure or density detector.
Preferably, the front end of the foreline valve is equipped with density monitor or density switch, exports a safety check setting
The signal of point, the signal are connect with the intelligence control unit.
Preferably, the gas density detecting device further includes at least one postposition valve, and the postposition valve is set to the branch
On the road, and it is located at after the foreline valve, one end of the postposition valve is equipped with the gas circuit of corresponding gas density relay
The other end of the interface being connected, the postposition valve is directly or indirectly connected to the gas circuit of the pressure regulating mechanism；After described
It sets valve to be also connected with the intelligence control unit, be turned off or under the control of the intelligence control unit.
It is highly preferred that the postposition valve is automatically controlled or is manually controlled.
Preferably, the gas density detection device further includes at least one multiple-pass joint, and the multiple-pass joint setting exists
Each branch road, each multiple-pass joint are equipped with the first connector of connection gas density relay, and the equipped with connection foreline valve
Two connectors are equipped with connection pressure regulating mechanism third connector, in the inside of the multiple-pass joint, first connector, described the
Two connectors are connected with the third connector.
It is highly preferred that being equipped at least one postposition between the third connector and the pressure regulating mechanism of the multiple-pass joint
One end of valve, the postposition valve is connected by the gas circuit of the corresponding gas density relay of the multiple-pass joint, described
The other end of postposition valve is directly or indirectly connected to the gas circuit of the pressure regulating mechanism；The postposition valve also with the intelligence control list
Member is connected, and turns off or under the control of the intelligence control unit.
It is highly preferred that the second joint of the multiple-pass joint, the gas chamber docking equipped with corresponding electrical equipment
Interconnecting piece, the foreline valve are embedded in the interconnecting piece.
It is highly preferred that the gas density detecting device further includes sensing for monitoring micro- water of the micro- water number of gas on-line
Device, micro- water sensor are arranged on the multiple-pass joint, and micro- water sensor is connected with the intelligence control unit.
Further, the gas density detecting device further includes gas circulation mechanism, the gas circulation mechanism setting
On the multiple-pass joint, the gas circulation mechanism is connected with the intelligence control unit, and the gas circulation mechanism includes hair
Tubule, sealed chamber and heating element realize gas flowing, monitor micro- water of gas interior on-line by heating heating element
Value.Preferably, micro- water sensor can be installed on the sealed chamber of the gas circulation mechanism, in capillary, capillary
Mouth, extracapillary.
It is highly preferred that the gas density detecting device further includes sensing for monitoring the decomposition product of gas decomposition product on-line
Device, the decomposition product sensor are arranged on the multiple-pass joint, and the decomposition product sensor is connected with the intelligence control unit.
Preferably, the gas density detecting device further includes at least one on-line testing contact point signal sampling unit, institute
It states on-line testing contact point signal sampling unit to be arranged on the branch road, equipped with the gas density relay phase with branch where it
The sampling contact of connection is configured as the contact letter when gas density relay generation contact movement of branch where sampling it
Number；Alternatively, the on-line testing contact point signal sampling unit is arranged outside the branch, equipped with the gas density with each branch after
The sampling contact that electric appliance is connected is configured as sampling the contact letter when gas density relay generation contact movement of each branch
Number；The on-line testing contact point signal sampling unit is also connected with the intelligence control unit.
It is connect it is highly preferred that each on-line testing contact point signal sampling unit is equipped at least two independent samplings
Point can be automatically performed verification to the contact of at least two gas density relays simultaneously, and continuous measurement, need not replace contact or
Reselect contact；Wherein,
The contact including but not limited to alarm contact, alarm contact+locking contact, alarm contact+1 contact of locking+are closed
Lock one of 2 contacts, alarm contact+locking contact+superpressure contact.
It is highly preferred that the on-line testing contact point signal sampling unit is dynamic to the contact of monitored gas density relay
The test voltage of work value or its switching value (contact switches gas density value when folding condition) is not less than 24V, i.e., in verification,
Apply between the respective terminal of contact and is not less than 24V voltage.
It is highly preferred that the on-line testing contact point signal sampling unit and the intelligence control unit are set together.
Further, the on-line testing contact point signal sampling unit and the intelligence control unit are sealed in a cavity or shell
In vivo.
It is highly preferred that the on-line testing contact point signal sampling unit includes the first connection circuit and the second connection circuit；
The contact and contact point signal control loop of the monitored gas density relay of the first connection circuit connection, described second connects
Connect the contact and the intelligence control unit of the monitored gas density relay of circuit connection；
Under non-verification state, contact is open type density monitor, and the second connection circuit disconnects or isolation, described
First connection closing of circuit；Under verification state, the first connection circuit is disconnected, the second connection circuit communication, by institute
The contact for stating gas density relay is connected with the intelligence control unit；Alternatively,
Under non-verification state, contact is closed type density monitor, and the second connection circuit disconnects or isolation, described
First connection closing of circuit；Under verification state, contact point signal control loop closure, the contact of gas density relay with
The connection of contact point signal control loop disconnects, the second connection circuit communication, by the contact of the gas density relay with
The intelligence control unit is connected.
Further, the first connection circuit includes the first relay, and the second connection circuit includes the second relay
Device, first relay are equipped at least one normally closed contact, and second relay is equipped at least one normal opened contact, described
Normally closed contact and the normal opened contact keep opposite switch state；The normally closed contact is connected on the contact point signal and controls back
Lu Zhong, the normal opened contact are connected on the contact of the gas density relay；Under non-verification state, the normally closed contact
Closure, the normal opened contact disconnect, the output state of contact described in the gas density relay real-time monitoring；In verification state
Under, the normally closed contact disconnects, and the normal opened contact closure, the contact of the gas density relay passes through the normal opened contact
It is connected with the intelligence control unit.
Further, first relay and second relay are two independent relays, or same
One relay.
It is highly preferred that the contact of the on-line testing contact point signal sampling unit and monitored gas density relay
Pass through Phototube Coupling on circuit.
Preferably, the intelligence control unit embeds algorithm and control program based on the embedded system of microprocessor, automatic to control
Entire checking procedure is made, includes all peripheral hardwares, logic and input and output.
It is highly preferred that the intelligence control unit be based on general purpose computer, industrial personal computer, ARM chip, AI chip, CPU, MCU,
The embedded algorithm such as FPGA, PLC, industrial control mainboard, embedded main control board and control program, automatically control entire checking procedure, include
All peripheral hardwares, logic and input and output.
Preferably, the intelligence control unit to the contact value of the gas density relay under operating ambient temperature (alarm and/or
Pressure value when block action) and/or rated pressure value measure, and be converted into automatically according to gas pressure-temperature characteristic
Corresponding pressure value when being 20 DEG C, i.e. gas density value, contact value and/or specified pressure of the canbe used on line to gas density relay
The performance detection of force value completes the on-line testing work of gas density relay.
Preferably, the intelligence control unit also monitors the pressure value and temperature value, and/or gas density of electrical equipment on-line
Value realizes the on-line monitoring to the gas density of electrical equipment.
It is highly preferred that the intelligence control unit calculates the gas density value, the mean value using averaging method (mean value method)
Method are as follows: in the time interval of setting, frequency acquisition is set, by N number of gas density of the different time points all collected
Value carries out mean value calculation processing, obtains its gas density value；Alternatively, being walked at the time interval of setting, set temperature interval
It is long, density value corresponding to the N number of different temperatures value collected in whole temperature ranges is carried out mean value calculation processing, is obtained
To its gas density value；Alternatively, time interval, setting pressure intervals step-length in setting, in whole pressure ranges
Density value corresponding to the N number of different pressures value collected carries out mean value calculation processing, obtains its gas density value；Its
In, N is the positive integer more than or equal to 1.
Preferably, it is close to obtain gas density relay when occurring contact movement or switching, the gas for the intelligence control unit
The gas density value for spending detection sensor acquisition, completes the on-line testing of gas density relay；Alternatively, the intelligence control unit obtains
It takes when the signal of gas density relay generation contact movement or switching, the pressure value that the gas density detection sensor acquires
And temperature value, and become corresponding 20 DEG C of pressure value, i.e. gas density value according to gas pressure-temperature Characteristic conversion, complete gas
The on-line testing of volume density relay.
Preferably, the intelligence control unit can measure the gas density relay of relative pressure and absolute pressure type.
Preferably, the circuit of the intelligence control unit includes intelligence control cell protection circuit, the intelligence control cell protection circuit packet
Include antistatic interference circuit (such as ESD, EMI), anti-surge circuit, electric fast protection circuit, anti-radiofrequency field interference circuit, anti-pulse
Circuit, charge protector are protected in group's interference circuit, power supply short-circuit protective circuit, the reversed protection circuit of power supply, electric contact misconnection
One of or it is several.
Preferably, the intelligence control unit further includes communication module, for realizing remote transmitting test data and/or verification
As a result.
It is highly preferred that the communication modes of the communication module are wire communication or wireless communication mode.
Further, the wire communication mode include RS232 bus, RS485 bus, CAN-BUS bus, 4-20mA,
One or more of Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier, cable.
Further, the wireless communication mode includes 5G/NB-IOT communication module (such as 5G, NB- built in sensor
IOT), 2G/3G/4G/5G, WIFI, bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, amount
One or more of son communication, sonar.
Preferably, the intelligence control unit is equipped with electric interfaces, and the electric interfaces are stored for completing test data, and/
Or test data export and/or test data print, and/or carry out data communication, and/or input analog quantity, number with host computer
Word amount information.
It is highly preferred that the essential information of the gas density detecting device Support gas density monitor inputs, the base
This information includes but is not limited to one or more of factory number, required precision, nominal parameter, manufactory, running position.
Prevent user's misconnection from interface being caused to damage, and/or prevent electromagnetic interference it is highly preferred that the electric interfaces are equipped with
Electric interfaces protect circuit.
Preferably, clock is additionally provided on the intelligence control unit, the clock is for being periodically arranged checking time, or record
Testing time, or record event time.
Preferably, after the gas density detecting device completes detection, the intelligence control automatic cell generation gas density after
The verification of electric appliance is reported, automatic to issue alarm if any exception, and/or is uploaded to distal end, and/or be sent to specified receiver
Upper (such as being sent on mobile phone).
Preferably, the intelligence control unit includes: microprocessor, man-machine interface, valve control, the inspection of pressure regulating mechanism position
It surveys part, execute controller (component).
Preferably, the gas density detection sensor is integrated；Alternatively, the gas density detection sensor
The gas density transmitter being integrated；The gas density value or density value of the gas density transmitter teletransmission monitoring,
The contact point signal of pressure value, temperature value and/or teletransmission gas density relay.
Preferably, the gas density relay, the gas density detection sensor are integrated；Alternatively, institute
State gas density relay, the telemetering type gas density relay that the gas density detection sensor is integrated；Institute
State the gas density value or density value, pressure value, temperature value and/or teletransmission gas of telemetering type gas density relay teletransmission monitoring
The contact point signal of volume density relay.
Preferably, the gas density detection sensor includes at least one pressure sensor and at least one temperature sensing
Device；Alternatively, using the gas density transmitter being made of pressure sensor and temperature sensor；Alternatively, using quartz tuning-fork skill
The density detection sensor of art.
The density detection sensor of the quartz tuning-fork technology is total to using the quartz (controlled) oscillator in vacuum is constant
Frequency of ringing and the resonance frequency of a homologous quartz (controlled) oscillator in tested gas are poor, and the density with tested gas is at just
Than obtaining the analog signal or digital signal of gas density value after treatment.
It is highly preferred that the pressure sensor is installed in the gas circuit of the pressure regulating mechanism.
It is highly preferred that the temperature sensor is installed in the gas circuit of the gas density relay of each branch or outside gas circuit,
Or in the gas density relay or outside the gas density relay.
It is highly preferred that the temperature-compensating member of monitored gas density relay is arranged at least one temperature sensor
Part is nearby or setting is on temperature compensating element, or is integrated in temperature compensating element.Preferably, at least one temperature passes
The pressure detector of monitored gas density relay is arranged in close to one end of the temperature compensating element in sensor.
It is highly preferred that ambient temperature value is compared the intelligence control unit with the temperature value of each temperature sensor acquisition,
Complete the verification to each temperature sensor.
It is highly preferred that temperature sensor can be thermocouple, thermistor, semiconductor-type；It can be with contact and non-contact
Formula；It can be thermal resistance and thermocouple.
It is highly preferred that the pressure sensor can also be diffusion silicon pressure sensor, MEMS pressure sensor, chip type
Pressure sensor, coil-induced pressure sensor (pressure sensor that such as Baden pipe is attached to induction coil), resistor pressure sensing
Device (pressure sensor that such as Baden pipe is attached to slide wire resistance)；It can be analog quantity pressure sensor, be also possible to digital quantity pressure
Force snesor.
It is highly preferred that the gas density detection sensor includes at least two pressure sensors, each pressure sensor
The pressure value of acquisition is compared, and completes the mutual verification to each pressure sensor.
It is highly preferred that the gas density detection sensor includes at least two temperature sensors, each temperature sensor
The temperature value of acquisition is compared, and completes the mutual verification to each temperature sensor.
It is highly preferred that the gas density detection sensor includes that at least one pressure sensor and at least one temperature pass
Sensor；The pressure value of each pressure sensor acquisition and the temperature value random alignment combination of each temperature sensor acquisition, and will
Each combination becomes the pressure value of 20 DEG C of multiple correspondences, i.e. gas density value, Ge Geqi according to gas pressure-temperature Characteristic conversion
Volume density value is compared, and completes the mutual verification to each pressure sensor, each temperature sensor；Alternatively, each pressure
The pressure value of sensor acquisition and the temperature value of each temperature sensor acquisition are gone through all over all permutation and combination, and each combination is pressed
Become the pressure value of 20 DEG C of multiple correspondences according to gas pressure-temperature Characteristic conversion, i.e. gas density value, each gas density value into
Row compares, and completes the mutual verification to each pressure sensor, each temperature sensor；Alternatively, by each pressure sensor, each
The comparison density value output signal for multiple gas density values and the gas density relay output that a temperature sensor obtains carries out
It compares, completes the mutual verification to gas density relay, each pressure sensor, each temperature sensor；Alternatively, by each
Multiple gas density values that pressure sensor, each temperature sensor obtain, pressure value, temperature value are compared, and complete to gas
The mutual verification of volume density relay, each pressure sensor, each temperature sensor.
Preferably, the gas density detecting device includes at least two gas density detection sensors, each gas
Density detection sensor includes a pressure sensor, a temperature sensor；Each gas density detection sensor detection
Gas density value is compared, and completes the mutual verification to each gas density detection sensor.
Preferably, the gas density detecting device realizes absolute pressure type gas density relay, and/or opposite automatically
The test of pressure-type gas density relay.Absolute pressure structure-absolute pressure display type density monitor, absolute pressure knot can be tested
Structure-gauge pressure display type density monitor, gauge pressure structure-absolute pressure display type density monitor, gauge pressure structure-gauge pressure are aobvious
Show the density monitor of type.Specifically, the gas density detecting device includes relative pressure sensor and/or absolute pressure
Sensor.
Preferably, the gas density detecting device further includes the data display interface for human-computer interaction, can be brushed in real time
New Current data values；And/or support data input, such as input pre-set parameter.
Preferably, the gas density detecting device further includes for the power supply of each power supply for electrical equipment, the power supply packet
Including power supply circuit, perhaps perhaps perhaps solar energy or mutual inductor take electric obtained electricity to recyclable rechargeable battery to battery
Source or induction power supply.
Preferably, the gas density detecting device further includes the camera for monitoring.
Preferably, the gas density detecting device can carry out online tonifying Qi.
Preferably, the gas density detecting device can carry out online gas dry.
Preferably, the gas density detecting device has self-diagnostic function, can be to abnormal timely bulletin.Such as it is disconnected
Line, short-circuit alarming, sensor degradation, gas pressure have the bulletins such as raising trend.
Preferably, the gas density detecting device has safety protection function: when gas density value or pressure value are lower than
When setting value, just automatically without verification, concurrent placarding signal.
Preferably, the gas density detecting device is additionally provided with the temperature protective device to electronic component, for guaranteeing
Electronic component reliably working under the environment temperature of low temperature or high temperature.
It is highly preferred that the temperature protective device includes heater and/or radiator (for example, fan), it is lower than in temperature
Heater when setting value opens radiator (for example, fan) when temperature is higher than setting value.
Preferably, the gas density detecting device further includes analysis system (for example, technocracy analysis system), to gas
The monitoring of volume density value, the electric property of gas density relay, monitoring element are tested and analyzed, are determined.
A kind of gas density monitoring method for realizing that gas density relay is non-maintaining is provided in terms of the application third,
Including realizing the non-maintaining gas density detecting device of gas density relay, which includes at least one
Pressure regulating mechanism, at least one gas detection sensor and at least one intelligence control unit, the gas circuit of the pressure regulating mechanism
On connect at least one branch, every branch road is equipped with a foreline valve；The gas density monitoring method includes:
It is described preposition by the corresponding electrical equipment connection in one end of the foreline valve of each branch road of pressure regulating mechanism
The gas circuit of the corresponding gas density relay of the other end of valve is connected to；By the gas of the gas circuit of pressure regulating mechanism and each branch
The gas circuit of volume density relay is connected；Intelligence control unit and the gas density relay of branch where it are linked together, or
Person links together intelligence control unit and the gas density relay of each branch；
When normal operating conditions, the gas density detecting device monitors the gas in the gas density relay of each branch
Density value；
The gas density detecting device is according to the checking time or/and checking command of setting and the gas of each branch
Density value situation, under the situation for allowing check-up gas density electrical relay:
The original state that pressure regulating mechanism is adjusted to verification (can according to need and save the step by intelligence control unit
Suddenly, it is directly entered in next step)；
The foreline valve of setting branch is closed by intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that the gas of setting branch is close
It spends relay and contact movement occurs, contact movement is transmitted to intelligence control unit, pressure value, temperature when intelligence control unit is acted according to contact
Angle value obtains density value, or directly obtains gas density value, detects the contact movement of the gas density relay of setting branch
(gas density value when contact movement occurs for value), completes the verifying work of the contact action value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opens the foreline valve of setting branch.
Preferably, the non-maintaining gas density monitoring method of gas density relay is realized, further includes:
After the gas density detecting device completes the verifying work of the contact action value of gas density relay, and institute
It states before intelligence control unit sets valve before opening, by intelligence control unit driving pressure regulating mechanism, slowly increase gas pressure, make
The gas density relay that branch must be set occurs contact and resets, and contact reset is transmitted to intelligence control unit, and intelligence control unit is according to connecing
Pressure value, temperature value when point resets obtain gas density value, or directly obtain gas density value, detect the gas of setting branch
The contact return value (gas density value when contact resets) of volume density relay, completes the contact return value of gas density relay
Verifying work.
It is highly preferred that the gas density detecting device further includes on-line testing contact point signal sampling unit, it is described online
Verification contact point signal sampling unit is connected with the intelligence control unit；The gas density monitoring method includes:
Gas density relay under verification state, on-line testing contact point signal sampling unit cutting gas density after
The contact of gas density relay is connected to the intelligence control unit by the contact point signal control loop of electric appliance, to gas density after
The contact point signal of electric appliance is sampled, and is transmitted to the intelligence control unit.
It is highly preferred that the gas density detecting device further includes at least one postposition valve, the postposition valve is set to described
Branch road, and be located at after the foreline valve of the branch, the gas density monitoring method further include:
One end of postposition valve is directly or indirectly connected to the gas circuit of the gas density relay of branch where it, by postposition
The other end of valve is directly or indirectly connected to the gas circuit of the pressure regulating mechanism；By the intelligence control list of branch where postposition valve and its
Member is connected, or postposition valve is connected with the intelligence control unit outside branch；The postposition valve is configured as verification setting branch
Gas density relay when, separate pressure regulating mechanism in gas circuit with other branches；
When the gas density relay of verification setting branch, the foreline valve of setting branch is closed by intelligence control unit, and same
When the postposition valves of other branches is closed by intelligence control unit, make pressure regulating mechanism and set the gas density relay of branch to exist
It is connected in gas circuit, while separating in gas circuit with other branches；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that the gas of setting branch is close
It spends relay and contact movement occurs, contact movement is transmitted to intelligence control unit, pressure value, temperature when intelligence control unit is acted according to contact
Angle value obtains density value, or directly obtains gas density value, detects the contact movement of the gas density relay of setting branch
(gas density value when contact movement occurs for value), completes the verification of the contact action value of the gas density relay of setting branch
Work.
Preferably, the contact point signal includes alarm, and/or locking.
Preferably, after the gas density relay completes verification, if any exception, the gas density detecting device can
It is automatic to issue alarm, and/or be uploaded to distal end, and/or be sent on specified receiver.
Compared with prior art, technical solution of the present invention has the advantages that
1) a kind of gas density detecting device for realizing that gas density relay is non-maintaining, including at least one pressure are provided
Regulating mechanism, at least one gas detection sensor and at least one intelligence control unit connect in the gas circuit of the pressure regulating mechanism
At least one branch is connect, every branch road is equipped with a foreline valve；The pressure of pressure regulating mechanism is controlled by intelligence control unit
Lifting is completed to the field monitoring of gas density relay, without service personnel to execute-in-place, realize to gas density after
Electric appliance it is non-maintaining.The gas density detecting device compact layout, rationally, the connection of each section, dismounting are easily operated, improve
The reliability of power grid, improves work efficiency, and reduces costs.
2) a kind of gas density monitoring system containing above-mentioned gas density monitoring device is provided.
3) a kind of gas density monitoring method for realizing that gas density relay is non-maintaining is provided, can support above-mentioned gas
The normal operation that measuring density is set.
Detailed description of the invention
Attached drawing is constituted part of this application to be used to provide further understanding of the present application, the schematic implementation of the application
Example and its explanation are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment one
Device and electrical equipment)；
Fig. 2 is the control circuit schematic diagram of the gas density detecting device of embodiment two；
Fig. 3 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment three
Device and electrical equipment)；
Fig. 4 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of example IV
Device and electrical equipment)；
Fig. 5 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment five
Device and electrical equipment)；
Fig. 6 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment six
Device and electrical equipment)；
Fig. 7 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment seven
Device and electrical equipment)；
Fig. 8 is structural schematic diagram (working condition, the connection gas density relay of the gas density detecting device of embodiment eight
Device and electrical equipment)；
Fig. 9 is the control circuit schematic diagram of the gas density detecting device of embodiment nine；
Figure 10 is the control circuit schematic diagram of the gas density detecting device of embodiment ten；
Figure 11 is the control circuit schematic diagram of the gas density detecting device of embodiment 11；
Figure 12 is the control circuit schematic diagram of the gas density detecting device of embodiment 12；
Figure 13 is the control circuit schematic diagram of the gas density detecting device of embodiment 13；
Figure 14 is the control circuit schematic diagram of the gas density detecting device of embodiment 14；
Figure 15 is the control circuit schematic diagram of the gas density detecting device of embodiment 15；
Figure 16 is a kind of control circuit of 4-20mA type density transmitter of the gas density detecting device of embodiment 16
Schematic diagram；
Figure 17 is a kind of configuration diagram of gas density monitoring system of embodiment 17；
Figure 18 is a kind of configuration diagram of gas density monitoring system of embodiment 18；
Figure 19 is a kind of configuration diagram of gas density monitoring system of embodiment 19.
Specific embodiment
The present invention provides a kind of gas density detecting device for realizing that density monitor is non-maintaining, system and method, to make
The purpose of the present invention, technical solution and effect are clearer, clear, referring to the drawings and give an actual example to of the invention further detailed
It describes in detail bright.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment one:
As shown in Figure 1, a kind of gas density detecting device for realizing that density monitor is non-maintaining, comprising: pressure adjusts machine
Structure 5, intelligence control unit 7, pressure sensor 2, the pressure sensor 2 are connected in gas circuit with pressure regulating mechanism 5.The pressure
The gas circuit of power regulating mechanism 5 is divided into three branches, the respectively first branch 141, second branch 142 and third branch by connecting tube
Road 143.Every branch road is equipped with foreline valve, multiple-pass joint, postposition valve, temperature sensor and the sampling of on-line testing contact point signal
Unit.Wherein, one end of each foreline valve is equipped with the interface that corresponding electrical equipment is connected, and the other end of foreline valve is logical
The gas circuit for crossing the corresponding gas density relay of multiple-pass joint is connected；One end of each postposition valve by multiple-pass joint with
The gas circuit of its corresponding gas density relay is connected, the gas circuit phase of the other end of postposition valve and the pressure regulating mechanism 5
Connection；Temperature sensor and the corresponding gas density relay of on-line testing contact point signal sampling unit are set together.
The intelligence control unit 7 respectively with the foreline valve of each branch, postposition valve, Self-sealing valve, temperature sensor and on-line testing contact point signal
Sampling unit is connected.
Specifically, the first branch 141 is equipped with foreline valve 41, and one end of foreline valve 41 is sealedly attached to electrical equipment 81
On, the other end of foreline valve 41 is connected by multiple-pass joint 91 with the gas circuit of gas density relay 11；The one of postposition valve 171
End is connected by multiple-pass joint 91 with the gas circuit of gas density relay 11, the other end of postposition valve 171 and the pressure tune
The gas circuit of section mechanism 5 is connected；Temperature sensor 31, on-line testing contact point signal sampling unit 61 are arranged in gas density relay
On device 11.Second branch 142 is equipped with foreline valve 42, and one end of foreline valve 42 is sealedly attached on electrical equipment 82, foreline valve
42 other end is connected by multiple-pass joint 92 with the gas circuit of gas density relay 12；One end of postposition valve 172 passes through more
Pass joint 92 is connected with the gas circuit of gas density relay 12, the other end of postposition valve 172 and the pressure regulating mechanism 5
Gas circuit is connected；Temperature sensor 32, on-line testing contact point signal sampling unit 62 are arranged on gas density relay 12.The
Three branches 143 are equipped with foreline valve 43, and one end of foreline valve 43 is sealedly attached on electrical equipment 83, the other end of foreline valve 43
It is connected by multiple-pass joint 93 with the gas circuit of gas density relay 13；One end of postposition valve 173 by multiple-pass joint 93 with
The gas circuit of gas density relay 13 is connected, and the other end of postposition valve 173 is connected with the gas circuit of the pressure regulating mechanism 5
It is logical；Temperature sensor 33, on-line testing contact point signal sampling unit 63 are arranged on gas density relay 13.
In an advantageous embodiment, each branch further includes Self-sealing valve and tonifying Qi interface, and the Self-sealing valve is set to each branch
Between corresponding electrical equipment and foreline valve, the tonifying Qi interface is arranged on the Self-sealing valve of each branch.
Pressure sensor 2 in the present embodiment, comprising: absolute pressure transducer, relative pressure sensor or absolute pressure
Sensor and relative pressure sensor, quantity can be with several.Pressure sensor form can be diffusion silicon pressure sensor,
MEMS pressure sensor, chip type pressure sensor, the coil-induced pressure sensor (pressure that such as Baden pipe is attached to induction coil
Measurement sensor), resistance pressure transmitter (pressure measurement sensor that such as Baden pipe is attached to slide wire resistance).It can be analog quantity
Pressure sensor is also possible to digital quantity pressure sensor.Pressure acquisition is the various pressure-sensitive such as pressure sensor, pressure transmitter
Element, such as diffusion silicon formula, sapphire formula, piezoelectric type, strain chip (resistance-strain chip, ceramics strain chip).
Temperature sensor (31,32,33) in the present embodiment, may is that thermocouple, thermistor, semiconductor-type；It can be with
Contact and contactless；It can be thermal resistance and thermocouple.In short, temperature acquisition can use temperature sensor, temperature pick-up
The various temperature-sensing elements such as device.
Gas density relay (11,12,13) in the present embodiment, comprising: (pointer is shown the density monitor with instruction
Density monitor or the density monitor of digital-scroll technique, liquid crystal display density monitor), without the density relay of instruction
Device (i.e. density switch).
The basic demand of intelligence control unit 7 in the present embodiment or function are: by intelligence control unit 7 complete to foreline valve (41,
42,43) control and signal acquisition of control, pressure regulating mechanism 5 are realized: be able to detect that the gas density of branch road after
Pressure value and temperature value when the contact of electric appliance (11,12,13) acts, pressure value P when being converted into corresponding 20 DEG C20
(density value) can detect the contact action value P of the gas density relay (11,12,13) of branch roadD20, complete gas
The verifying work of density monitor (11,12,13).Alternatively, gas density relay (11,12,13) can be directly detected
Density value P when contact actsD20, complete the verifying work to gas density relay (11,12,13).Certainly, intelligence control
Unit 7 can also realize that test data stores；And/or test data export；And/or test data is printable；And/or can with it is upper
Position machine carries out data communication；And/or analog quantity, digital information can be inputted.The intelligence control unit 7 further includes communication module, is led to
It crosses communication module and realizes the information such as remote transmitting test data and/or check results；When the gas density relay of branch road
Rated pressure value output signal when, intelligence control unit 7 acquires density value at that time simultaneously, completes corresponding gas density relay
Rated pressure value verification.It can be completed each by the test of the rated pressure value of the gas density relay to branch simultaneously
The gas density relay of branch road, pressure sensor, the self checking work between temperature sensor, are realized non-maintaining.
The electrical equipment (81,82,83) of the present embodiment, including SF6 outlet openings equipment, SF6 mixed gas electrical equipment,
Environment-friendly type outlet openings equipment or other insulating gas electrical equipments.
The pressure regulating mechanism 5 of the present embodiment is cavity open at one end, is equipped with (the piston 51 of piston 51 in the cavity
Equipped with sealing ring 510), one end of the piston 51 is connected with an adjusting rod, and the outer end of the adjusting rod connects driving part
52, the other end of the piston 51 protrudes into the opening, and is in contact with the inner wall of the cavity, and the driving part 52 drives
It moves the adjusting rod and then the piston 51 is driven to move in the cavity.The driving part 52 includes but is not limited to magnetic
One of power, motor (variable-frequency motor or stepper motor), reciprocating mechanism, Carnot cycle mechanism, pneumatic element.
The working principle of the present embodiment: closing the foreline valve of setting branch by intelligence control unit 7, so that the gas of setting branch
The gas insulated electric apparatus partition corresponding in gas circuit of volume density relay；Pass through 5 regulating gas of pressure regulating mechanism
Pressure lifting, so that contact point signal movement occurs for the gas density relay of setting, contact point signal movement is connect by on-line testing
Point signal sampling unit is transmitted to intelligence control unit 7, and density value when intelligence control unit 7 is acted according to contact detects corresponding gas
Volume density relay contact action value (send contact movement when gas density value) and/or return value (contact reset when
Gas density value), the online verifying work for completing gas density relay.
Embodiment two:
Fig. 2 is a kind of control circuit schematic diagram of gas density detecting device.As shown in Fig. 2, the pressure regulating mechanism 5
Gas circuit on connect three branches, every branch road is equipped with on-line testing contact point signal sampling unit, and structure is identical, respectively
For the sampling of on-line testing contact point signal sampling unit 61, on-line testing contact point signal sampling unit 62 and on-line testing contact point signal
Unit 63, the on-line testing contact point signal sampling unit of every branch road are equipped with the gas density relay phase with the branch road
The sampling contact of connection is configured as sampling the contact point signal of the gas density relay, and the on-line testing of every branch road connects
Point signal sampling unit is also connected with intelligence control unit 7.
The basic demand of the on-line testing contact point signal sampling unit of each branch road or function are: 1) not influencing in verification
The safe operation of its corresponding electrical equipment is exactly the gas of branch where on-line testing contact point signal sampling unit in verification
When the contact of volume density relay acts, the safe operation of corresponding electrical equipment will not influence；2) on-line testing contact
The contact point signal control loop of the gas density relay of branch does not influence gas density detecting device where signal sampling unit
Performance, do not influence the performance of intelligence control unit 7 especially, will not make gas density detecting device be damaged or influence survey
Trial work is made.
Specifically, by taking the on-line testing contact point signal sampling unit 61 in the first branch as an example, on-line testing contact point signal
Sampling unit 61 is mainly made of relay J1 and relay J2.When normal for pressure value, contact is the gas of normal opened contact
Density monitor, wherein the two of relay J1 couple normally closed contact J11 and J12 are connected on the contact point signal control of gas density relay
In circuit processed；Two couples of normal opened contacts J21 and J22 of relay J2 are connected to the contact P of gas density relayJ1On.It can also be with
Be: wherein a pair of of normally closed contact J11 of relay J1 is connected in the contact point signal control loop of gas density relay；Relay
A pair of of normal opened contact J21 of device J2 is connected to the contact P of gas density relayJ1On；It is also possible that relay J1 and relay J2
It is integrated, i.e., with the relay of normally-open normally-close contact.In a word can be multipair, individually, flexible combination uses.On-line testing connects
The structure and on-line testing contact point signal sampling unit of point signal sampling unit 62 and on-line testing contact point signal sampling unit 63
61 is identical, and details are not described herein.
Intelligence control unit 7 is mainly made of processor U1 (71), power supply U2 (72), and processor U1 (71) may is that general meter
Calculation machine, industrial personal computer, CPU, single-chip microcontroller, ARM chip, AI chip, quantum chip, photon chip, MCU, FPGA, PLC etc., industry control master
Plate, embedded main control board etc. and other intelligent integrated circuits.Power supply U2 (72) may is that Switching Power Supply, alternating current 220V, straight
Galvanic electricity source, LDO, programmable power supply, solar energy, battery, rechargeable battery, battery etc..And the pressure sensor 2 of pressure acquisition P
It may is that the various pressure elements such as pressure sensor, pressure transmitter.The temperature sensor 3 of temperature acquisition T may is that temperature
The various temperature-sensing elements such as sensor, temperature transmitter.The foreline valve and postposition valve (F) of each branch road are (including foreline valve 41, preposition
Valve 42, foreline valve 43, postposition valve 171, postposition valve 172, postposition valve 173) may is that solenoid valve, motor-driven valve, pneumatic operated valve, ball valve,
Needle-valve, regulating valve, pipe valve etc. can be switched on and off gas circuit, or even the element of control flow.Foreline valve and postposition valve (F) can be with
Be it is automanual, can also be hand-operated valve.Pressure regulating mechanism (A) 5 may is that motorized adjustment piston, motorized adjustment cylinder, pressurization
Pump, gas cylinder pressurization and valve, solenoid valve, flow controller etc., can be automanual, can also be and manually adjust.
The working principle of the present embodiment is as follows:
The intelligence control unit 7 of gas density detecting device monitors electrical equipment according to pressure sensor 2, temperature sensor 3
Gas pressure P and temperature T corresponding 20 DEG C of pressure value Ps are obtained according to gas pressure-temperature characteristic20(i.e. gas density
Value).For example, can be calculated using Beattie-Bridgeman equation for SF6 gas；For SF6 mixed gas
For, it can be calculated according to Dalton's law (of partial pressures), Beattie-Bridgeman equation, The Ideal-Gas Equation.
When needing to verify the gas density relay of each branch road, at this time if gas density value P20The safety of >=setting
Verify density value PS, gas density detecting device issues instruction, i.e., closes the foreline valve of each branch by intelligence control unit 7,
Or the foreline valve of partial branch is closed, so that the electrical equipment that the gas density relay of the branch road is corresponding in gas circuit
Partition.
Then, the contact point signal control loop that intelligence control unit 7 controls the gas density relay of corresponding branch road disconnects, example
Such as, the contact J11 and J12 for controlling the electromagnetic relay J1 of on-line testing contact point signal sampling unit 61 are disconnected, so that online school
Will not influence the safe operation of its corresponding electrical equipment when testing the gas density relay of the branch, will not verification when,
Accidentally hair alarm signal or lock-in control circuit.Because gas density detecting device before starting verification, has carried out gas density
Value P20The safety check density value P of >=settingSMonitoring and judgement, the gas of electrical equipment be in operational envelope,
Moreover gas leakage is a slow process, and when verification is safe.Meanwhile gas density detecting device passes through intelligence control unit 7
Control, be closed the contact J21 and J22 of the relay J2 of on-line testing contact point signal sampling unit 61, the gas is close at this time
Spend the contact P of relayJ1It is connected by the contact J21 and J22 of relay J2 with intelligence control unit 7.
Then, intelligence control unit 7 control pressure regulating mechanism 5 driving part 52 (can mainly use motor (motor) and
Gear realizes that mode is various, flexible), and then the piston 51 of pressure regulating mechanism 5 is adjusted, so that by piston 51, corresponding branch
The seal cavities of the compositions such as gas density relay, foreline valve volume change, the pressure of the gas of gas density relay occurs
Power gradually declines, so that contact movement occurs for gas density relay, contact movement passes through its corresponding on-line testing contact
The relay J2 of signal sampling unit uploads to intelligence control unit 7, the pressure value P that intelligence control unit 7 measures when being acted according to contact and
Temperature T value, pressure value P when becoming 20 DEG C corresponding by weight of gas characteristic20(gas density value), so that it may detect correspondence
The contact action value P of the gas density relay of branchD20, to the alarm of gas density relay and/or the contact of block signal
After action value all detected, then pass through the motor (motor or variable-frequency motor) that intelligence control unit 7 controls pressure regulating mechanism 5,
The piston 51 for adjusting pressure regulating mechanism 5, gradually rises the pressure of the gas of gas density relay, and gas density is arrived in test
The contact return value of the alarm of relay and/locking.Gas density detecting device can verify repeatedly (such as 2~3 repeatedly
It is secondary), its average value is then calculated, this completes the verifying works of the gas density relay to branch road.
After the completion of verification, the control of intelligence control unit 7 disconnects the contact sample circuit of the gas density relay of corresponding branch.Example
Such as, the contact J21 and J22 of the relay J2 of on-line testing contact point signal sampling unit 61 is disconnected, and the gas of the branch is close at this time
Spend the contact P of relayJ1Just no longer it is connect with intelligence control unit 7.The foreline valve 41 that intelligence control unit 7 controls the branch simultaneously is opened,
So that the gas density relay of branch electrical equipment corresponding in gas circuit is connected.Intelligence control unit 7 controls online
Verify contact point signal sampling unit 61 relay J1 contact J11 and J12 closure, the gas density relay of the branch it is close
It spends monitoring loop to work normally, makes the gas density of its corresponding electrical equipment of the gas density relay security monitoring, realize
Electrical equipment safely and reliably works.Thus conveniently complete the on-line testing work to the gas density relay of the branch
Make, while will not influence the safe operation of its corresponding electrical equipment when the on-line testing gas density relay.
It should be noted that before intelligence control unit 7 can according to need one branch of control, a plurality of branch or all branches
Valve closing is set, so that the electrical equipment partition that the gas density relay of corresponding branch road is corresponding in gas circuit, passes through pressure
5 regulating gas pressure lifting of power regulating mechanism, so that with one or portion in the gas density relay of electrical equipment partition
Divide or all occur contact movement.
After completing the verifying work to all or part of gas density relay, gas density detecting device is just carried out
Determine, can be with bulletin testing result, mode is flexible.Specifically include: 1) gas density detecting device can bulletin on the spot, example
Such as shown by indicator light, number or liquid crystal；2) or by online teletransmission communication modes implement to upload, such as can upload to
Remote back-office detection system；3) or by wirelessly uploading, specific terminal is uploaded to, such as can wirelessly upload mobile phone；4) or
It is uploaded by other approach；5) it or abnormal results by alarm signal line or dedicated signal lines uploads；6) it individually uploads, or with
Other signals binding uploads.In short, after gas density detecting device completes the on-line testing work to gas density relay, such as
There is exception, alarm can be issued automatically, distal end can be uploaded to, or can be sent on specified receiver, such as be sent to
Mobile phone.Alternatively, after gas density detecting device completes the on-line testing work to gas density relay, if any exception, intelligence control
The alarm contact point signal of gas density relay can be uploaded distal end (monitoring room, background monitoring platform etc.) by unit 7, can be with
Bulletin is shown on the spot.The gas density relay on-line testing of simple version, can be there is abnormal check results to pass through alarm signal
Number line uploads, and can be uploaded with certain rule, for example, it is abnormal when, in an alarm contact contact in parallel, regularly
Open and close, can be by parsing acquisition situation；Or it is uploaded by independent checking signal line.Specifically can with state it is good on
Biography or problematic upload, or check results are uploaded by individual checking signal line, or show, alarm on the spot on the spot, or is logical
Wireless upload is crossed, networks and uploads with smart phone.Its communication mode be it is wired or wireless, wired communication modes can be
The industrial bus such as RS232, RS485, CAN-BUS, fiber optic Ethernet, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable,
PLC power carrier etc.；Wireless communication mode can for 2G/3G/4G/5G etc., WIFI, bluetooth, Lora, Lorawan, Zigbee,
Infrared, ultrasonic wave, sound wave, satellite, light wave, quantum communications, sonar, 5G/NB-IOT communication module (such as NB- built in sensor
IOT) etc..In short, the unfailing performance of gas density detecting device can be fully ensured that with multiple form, multiple combinations.
Gas density detecting device has safety protection function, when particularly as being less than setting value, gas density monitoring dress
It sets and no longer carries out on-line testing with regard to automatic, and issue bulletin signal.For example, the gas density value when equipment is less than setting value PS
When, just do not verify；Only as the gas density value of equipment >=(alarm pressure value+0.02MPa), online school just can be carried out
It tests.
Gas density detecting device can carry out on-line testing according to the time of setting, can also be according to the temperature of setting
(such as limit high temperature, high temperature, limit low temperature, low temperature, room temperature, 20 degree etc.) carries out on-line testing.High temperature, low temperature, room temperature, 20 DEG C
When environment temperature on-line testing, error determines to require to be different, such as when 20 DEG C of environment temperature verifications, gas density prison
The required precision for surveying device is 1.0 grades or 1.6 grades, and when high temperature can be 2.5 grades.Specifically can according to the requirement of temperature, according to
Relevant criterion is implemented.Such as it is mended according to 4.8 temperature in DL/T 259 " sulfur hexafluoride gas density relay verification regulation "
Repay required precision corresponding to each temperature value in performance provision.
Gas density detecting device can at different temperature, the different periods carry out the comparison of its error performance.
That is different times, the comparison in same temperature ranges stated, determine gas density relay, electrical equipment, gas density detecting device
Performance, with the comparison in history each period, history and present comparison.
Gas density detecting device can verify multiple (such as 2~3 times) repeatedly, according to each check results, calculate
Its average value.When necessary, on-line testing can be carried out to gas density relay at any time.
Gas density detecting device has pressure, temperature measurement and software scaling function.Do not influencing electrical equipment safety
Under the premise of operation, can on-line checking go out alarm and/or the locking contact action value and/or return of gas density relay
Value.Certainly alarm and/locking contact return value can also be according to requiring not needing to test.
Gas density detecting device can compare judgement automatically, if error differs greatly, will issue different in verification
Often prompt: gas density relay or pressure sensor, temperature sensor etc. are problematic, i.e., gas density detecting device can be complete
At the phase mutual verifying function of gas density relay and pressure sensor, temperature sensor or density transmitter；It can complete institute
State the mutual verification of gas density relay, pressure sensor, temperature sensor.Gas density detecting device completes verifying work
Afterwards, verification report can be automatically generated, if any exception, alarm can be issued automatically, or be sent on specified receiver, such as send out
It is sent to mobile phone；Gas density detecting device live can show on the spot gas density value and check results, or be shown by backstage
Gas density value and check results, concrete mode can be flexible；With real-time online gas density value, pressure value, temperature value etc.
The functions such as data show, analysis of trend, the inquiry of historical data, Real-time Alarm；Gas density value or gas can be monitored on-line
Volume density value, pressure value, temperature value；It, can be to abnormal timely bulletin, such as broken string, short-circuit alarming, biography with self-diagnostic function
The bulletins such as sensor damage；Can at different temperature, the different period carry out the error performance of gas density relay
Compare, i.e. different times, the comparison in same temperature ranges stated, determines the performance of gas density relay.When each with history
Comparison, history and the present comparison function of phase.Self-test can also be carried out to gas density detecting device；To gas density relay
Device, the electrical equipment monitored density value whether be normally carried out judgement.It can density value, gas to electrical equipment itself
Density monitor, pressure sensor, temperature sensor etc. carry out normal or abnormal judgement and analysis, compare, and then realization pair
The gas density monitoring of electrical equipment, the state of gas density detecting device itself, gas density relay are determined, are compared
Compared with, analysis；Also contain analysis system (technocracy analysis system), to the monitoring of gas density value, gas density relay, monitoring
Element is tested and analyzed, is determined, it is known where is problem, is electrical equipment, gas density relay or gas density
Monitoring device itself is problematic；Also the contact point signal state of gas density relay is monitored, and its state is implemented far
It passes.It can be disconnection or closure in the contact point signal state for being known that gas density relay from the background, thus more one layers
Monitoring improves reliability；Detection, or detection and judgement can also be can be carried out to the temperature compensating of gas density relay；Also
Can the contact contact resistance to gas density relay detect, or detection and determine；With data analysis, data processing
Function can carry out corresponding fault diagnosis and prediction to electrical equipment.
As long as the mutual data of pressure sensor 2, temperature sensor 3, gas density relay are identical, normal
, so that it may illustrate gas density detecting device, gas density relay be it is normal, do not have to thus verification gas density after
Electric appliance is verified without to gas density detecting device, can exempt to verify with the life-cycle.Unless some electricity in substation
The mutual data of pressure sensor 2, temperature sensor 3, the gas density relay of gas equipment be misfit, it is abnormal
, just maintenance personal is arranged to go to handle.And for coincideing, normal, there is no need to be verified, can greatly improve reliable
Property and efficiency reduce cost.
Embodiment three:
As shown in figure 3, the gas density detecting device of the present embodiment and the difference of embodiment one have:
The pressure regulating mechanism 5 of the present embodiment is mainly made of air bag 53, driving part 52.5 basis of pressure regulating mechanism
The control of intelligence control unit 7 so that driving part 52 pushes air bag 53 that volume change occurs, and then completes the lifting of pressure.Pass through
The pressure regulating mechanism 5 adjust pressure so that branch road gas density relay occur contact movement, contact movement by pair
Should the on-line testing contact point signal sampling unit of branch road be transmitted to intelligence control unit 7, intelligence control unit 7 is according to the gas of corresponding branch road
Pressure value and temperature value when contact acts occur for volume density relay, are converted into corresponding density value, detect corresponding branch
The contact action value and/or return value of the gas density relay of road, to complete the verification work to gas density relay
Make.
Example IV:
As shown in figure 4, a kind of gas density detecting device for realizing that density monitor is non-maintaining, comprising: pressure adjusts machine
Structure 5, intelligence control unit 7, temperature sensor 3, the intelligence control unit 7 and temperature sensor 3 are set together.The pressure adjusts machine
Four branches are connected in the gas circuit of structure 5.Every branch road is equipped with foreline valve, multiple-pass joint and the sampling of on-line testing contact point signal
Unit.Wherein, one end of each foreline valve is equipped with the interface that corresponding electrical equipment is connected, and the other end of foreline valve is logical
The gas circuit for crossing the corresponding gas density relay of multiple-pass joint is connected.The on-line testing contact point signal of each branch samples single
The corresponding gas density relay of member is set together.In an advantageous embodiment, the front end of the foreline valve is also set
There is valve, one end of the valve passes through the foreline valve for being sealedly attached to electrical equipment, the other end of the valve
It is connected with multiple-pass joint.In another preferred embodiment, the front end of the foreline valve is additionally provided with Self-sealing valve, the Self-sealing valve
One end for being sealedly attached to electrical equipment, the other end of the Self-sealing valve is connected by the foreline valve with multiple-pass joint
It is logical.In another preferred embodiment, pressure sensor is additionally provided on the multiple-pass joint, the pressure sensor passes through multi-pass
Connector is connected with the gas circuit of the gas density relay of branch where it.In another preferred embodiment, the foreline valve
Rear end be additionally provided with postposition valve, the gas circuit that one end of the postposition valve passes through the corresponding gas density relay of multiple-pass joint
It is connected, the other end of postposition valve is connected with the gas circuit of the pressure regulating mechanism 5.The intelligence control unit 7 respectively with each
Foreline valve, postposition valve, Self-sealing valve or valve, the on-line testing contact point signal sampling unit on road are connected.
Specifically, the first branch is equipped with foreline valve 41, and one end of foreline valve 41 is sealedly attached to electrically by valve 121
In equipment 81, the other end of foreline valve 41 is connected by multiple-pass joint 91 with the gas circuit of gas density relay 11；Online school
Contact point signal sampling unit 61 is tested to be set together with gas density relay 11；Pressure sensor is additionally provided on multiple-pass joint 91
21；One end of postposition valve 171 is connected by multiple-pass joint 91 with the gas circuit of gas density relay 11, postposition valve 171 it is another
One end is connected with the gas circuit of the pressure regulating mechanism 5.Second branch is equipped with foreline valve 42, and one end of foreline valve 42 passes through
Valve 122 is sealedly attached on electrical equipment 82, and the other end of foreline valve 42 passes through multiple-pass joint 92 and gas density relay
12 gas circuit is connected；On-line testing contact point signal sampling unit 62 is set together with gas density relay 12；Multi-pass connects
Pressure sensor 22 is additionally provided on first 92；One end of postposition valve 172 passes through the gas of multiple-pass joint 92 and gas density relay 12
Road is connected, and one end of the postposition valve 171 of the other end and first branch of postposition valve 172 is connected.Before third branch road is equipped with
Valve 43 is set, one end of foreline valve 43 is sealedly attached on electrical equipment 83 by Self-sealing valve 111, and the other end of foreline valve 43 passes through
Multiple-pass joint 93 is connected with the gas circuit of gas density relay 13；On-line testing contact point signal sampling unit 63 and gas density
Relay 13 is set together；Pressure sensor 23 is additionally provided on multiple-pass joint 93；Multiple-pass joint 93 and pressure regulating mechanism 5
Gas circuit is connected.4th road is equipped with foreline valve 45, and one end of foreline valve 45 is sealedly attached to electrical equipment by valve 125
On 85, the other end of foreline valve 45 is connected by multiple-pass joint 95 with the gas circuit of gas density relay 15；On-line testing connects
Point signal sampling unit 65 is set together with gas density relay 15；Pressure sensor 25 is additionally provided on multiple-pass joint 95；
One end of postposition valve 175 is connected by multiple-pass joint 95 with the gas circuit of gas density relay 15, the other end of postposition valve 175
It is connected with the gas circuit of the pressure regulating mechanism 5.
The pressure regulating mechanism 5 of the present embodiment is mainly made of air bag 53, driving part 52.5 basis of pressure regulating mechanism
The control of intelligence control unit 7 so that driving part 52 pushes air bag 53 that volume change occurs, and then completes the lifting of pressure.
Embodiment five:
As shown in figure 5, the gas density detecting device of the present embodiment and the difference of embodiment one have:
1) gas circuit of the pressure regulating mechanism is divided into four branches by multiple-pass joint 96, respectively the first branch 141,
Second branch 142, third branch 143 and the 4th branch 144.It should be pointed out that the item number of branch is not restricted by, Ke Yigen
It is increased and decreased according to needs.
2) every branch road is equipped with pressure sensor and intelligence control unit, and the pressure sensor and intelligence control unit of each branch are equal
It is arranged on the gas density relay of each branch.
3) on-line testing contact point signal sampling unit is arranged on the gas density relay of each branch.
4) pressure regulating mechanism 5 of the present embodiment is mainly made of solenoid valve, second shell 55.Pressure regulating mechanism 5
According to the control of the intelligence control unit of each branch, so that solenoid valve is opened, pressure change occurs, and then complete the lifting of pressure.Pass through
The pressure regulating mechanism 5 (solenoid valve) adjusts pressure, so that contact movement occurs for the gas density relay of branch road, contact is dynamic
Make the intelligence control unit that each branch is transmitted to by the on-line testing contact point signal sampling unit 6 of each branch, intelligence control unit is according to it
Pressure value and temperature value when contact acts occur for the gas density relay of place branch, are converted into corresponding density value,
Detect alarm and/or the locking contact action value of gas density relay.The contact of the gas density relay of branch acts
After the completion of value verification, corresponding intelligence control unit is shut off solenoid valve, is then turned on the foreline valve of the branch, and pressure occurs and becomes
Change, and then realize the rising of pressure, so that the gas density relay of branch road occurs contact and resets, contact, which resets, passes through each
The on-line testing contact point signal sampling unit 6 on road is transmitted to the intelligence control unit of each branch, and intelligence control unit is according to branch where it
Pressure value and temperature value when the contact reset (return) of gas density relay, are converted into corresponding density value, detect
The alarm and/or locking contact return value of gas density relay, and then complete the verifying work of gas density relay.It is described
Vent valve is arranged in a closed gas chamber or the vent valve is connect with a closed gas chamber, it is ensured that air seal, zero
Discharge.
Embodiment six:
As shown in fig. 6, a kind of gas density detecting device for realizing that density monitor is non-maintaining, comprising: two pressure tune
Save mechanism, respectively first pressure regulating mechanism 51 and second pressure regulating mechanism 52.
The first pressure regulating mechanism 51 is connected in gas circuit with pressure sensor 2.First pressure regulating mechanism 51
Gas circuit three branches, the respectively first branch 141, second branch 142 and third branch 143 are divided by connecting tube.Every
Branch road is equipped with foreline valve, multiple-pass joint, postposition valve, temperature sensor and tonifying Qi interface.Specifically, in the first branch 141
Equipped with foreline valve 41, one end of foreline valve 41 is sealedly attached on electrical equipment 81, and the other end of foreline valve 41 is connect by multi-pass
First 91 are connected with the gas circuit of gas density relay 11；One end of postposition valve 171 by multiple-pass joint 91 and gas density after
The gas circuit of electric appliance 11 is connected, and the other end of postposition valve 171 is connected with the gas circuit of the first pressure regulating mechanism 51；Temperature
Sensor 31 is set together with gas density relay 11；Tonifying Qi interface 101 is additionally provided on multiple-pass joint 91.Second branch
142 are equipped with foreline valve 42, and one end of foreline valve 42 is sealedly attached on electrical equipment 82, and the other end of foreline valve 42 passes through more
Pass joint 92 is connected with the gas circuit of gas density relay 12；One end of postposition valve 172 is close by multiple-pass joint 92 and gas
The gas circuit of degree relay 12 is connected, and the other end of postposition valve 172 is connected with the gas circuit of the first pressure regulating mechanism 51；
Temperature sensor 32 is set together with gas density relay 12；Tonifying Qi interface 102 is additionally provided on multiple-pass joint 92.Third branch
Road 143 is equipped with foreline valve 43, and one end of foreline valve 43 is sealedly attached on electrical equipment 83, and the other end of foreline valve 43 passes through
Multiple-pass joint 93 is connected with the gas circuit of gas density relay 13；One end of postposition valve 173 passes through multiple-pass joint 93 and gas
The gas circuit of density monitor 13 is connected, and the other end of postposition valve 173 is connected with the gas circuit of the first pressure regulating mechanism 51
It is logical；Temperature sensor 33 is set together with gas density relay 13；Tonifying Qi interface 103 is additionally provided on multiple-pass joint 93.
One branch of air circuit connection of the second pressure regulating mechanism 52, the branch road be equipped with foreline valve, multiple-pass joint,
Temperature sensor, pressure sensor and tonifying Qi interface.Specifically, one end of foreline valve 49 is sealedly attached on electrical equipment 89,
The other end of foreline valve 49 is connected by multiple-pass joint 99 with the gas circuit of gas density relay 19；Second pressure regulating mechanism
52 are connected by multiple-pass joint 99 with the gas circuit of gas density relay 19；Temperature sensor 39 is arranged in gas density relay
On device 19；Tonifying Qi interface 109 is additionally provided on multiple-pass joint 99.
The gas density detecting device of the present embodiment further includes on-line testing contact point signal sampling unit 6 and intelligence control unit
7, together with the on-line testing contact point signal sampling unit 6 is located at intelligence control unit 7, and it is set to outside each branch.It is described online
Verification contact point signal sampling unit 6 is connected with the gas density relay of intelligence control unit 7 and each branch road, and it is close to sample each gas
Spend contact point signal when contact movement occurs for relay.The intelligence control unit 7 is pressed with first pressure regulating mechanism 51, second respectively
Power regulating mechanism 52, the foreline valve of each branch road, postposition valve, temperature sensor, pressure sensor are connected.
In the present embodiment, first pressure regulating mechanism 51 and the structure of second pressure regulating mechanism 52 can be identical or not
Together.In an advantageous embodiment, first pressure regulating mechanism 51 is mainly made of bellows 514, driving part 512, ripple
Pipe 514 and the gas density relay of each branch road are sealed connected together, and form reliable seal cavity, and first pressure is adjusted
Mechanism 51 is according to the control of intelligence control unit 7, so that driving part 512 pushes bellows 514 that volume change occurs, seal cavity is sent out
Raw volume change, and then complete the lifting of pressure；Second pressure regulating mechanism 52 mainly by gas chamber 527, heating element 528 (or
Cooling module), heat preservation member 529 form.The outside that the heating element 528 (or cooling module) is set to the gas chamber 527 is (or interior
Portion), the heating of heating element 528 (or control cooling module refrigeration) is controlled by intelligence control unit 7, leads to the gas in gas chamber 527
Temperature change, and then complete pressure lifting.
It should be pointed out that the item number of the quantity of pressure regulating mechanism and its corresponding branch is not restricted by, it can basis
It needs to be increased and decreased.In practical application, in order to save cost, each gas density relay can configure individual pressure and adjust
Mechanism can also share a pressure regulating mechanism with multiple gas density relays.
Embodiment seven:
As shown in fig. 7, a kind of gas density detecting device for realizing that density monitor is non-maintaining, comprising: two pressure tune
Save mechanism, respectively first pressure regulating mechanism 51 and second pressure regulating mechanism 52.
The first pressure regulating mechanism 51 is connected with pressure sensor 21, temperature sensor 31, pressure sensor 21,
Temperature sensor 31 is arranged together, can organize the density value that gas is directly obtained as gas density transmitter, pressure value, temperature
Angle value.It is connected with two branches in the gas circuit of first pressure regulating mechanism 51, is the first branch and second branch, every branch road
It is equipped with Self-sealing valve, foreline valve, multiple-pass joint, on-line testing contact point signal sampling unit, postposition valve and tonifying Qi interface.Specifically
Ground, the first branch are equipped with Self-sealing valve 111, and one end of Self-sealing valve 111 is sealedly attached on electrical equipment 81, Self-sealing valve 111
The other end connects one end of foreline valve 41, and the other end of foreline valve 41 passes through the gas of multiple-pass joint 91 and gas density relay 11
Road is connected；One end of postposition valve 171 is connected by multiple-pass joint 91 with the gas circuit of gas density relay 11, postposition valve
171 other end is connected with the gas circuit of the first pressure regulating mechanism 51；On-line testing contact point signal sampling unit 61 is set
It sets on gas density relay 11；Tonifying Qi interface 101 is additionally provided on multiple-pass joint 91.Second branch is equipped with Self-sealing valve 115,
One end of Self-sealing valve 115 is sealedly attached on electrical equipment 85, one end of the other end connection foreline valve 45 of Self-sealing valve 115, preceding
The other end for setting valve 45 is connected by multiple-pass joint 95 with the gas circuit of gas density relay 15；One end of postposition valve 175 is logical
It crosses multiple-pass joint 95 to be connected with the gas circuit of gas density relay 15, the other end of postposition valve 175 and the first pressure tune
The gas circuit of section mechanism 51 is connected；Line verifies contact point signal sampling unit 65 and is arranged on gas density relay 15；Multi-pass connects
Tonifying Qi interface 105 is additionally provided on first 95.
It is each foreline valve, postposition valve in the first pressure regulating mechanism 51, its first branch and second branch, self-styled
Valve, on-line testing contact point signal sampling unit and the pressure sensor 21 being directly connected with first pressure regulating mechanism 51,
Temperature sensor 31 is connected with intelligence control unit 71 respectively.
The second pressure regulating mechanism 52 is connected with pressure sensor 22, temperature sensor 32, pressure sensor 22,
Temperature sensor 32 is arranged together, can organize the density value that gas is directly obtained as gas density transmitter, pressure value, temperature
Angle value.It is connected with two branches in the gas circuit of second pressure regulating mechanism 52, is third branch and the 4th branch, every branch road
It is equipped with Self-sealing valve, foreline valve, multiple-pass joint, postposition valve and tonifying Qi interface.Specifically, third branch road is equipped with Self-sealing valve
116, one end of Self-sealing valve 116 is sealedly attached on electrical equipment 86, and the one of the other end connection foreline valve 46 of Self-sealing valve 116
End, the other end of foreline valve 46 are connected by multiple-pass joint 96 with the gas circuit of gas density relay 16；The one of postposition valve 176
End is connected by multiple-pass joint 96 with the gas circuit of gas density relay 16, the other end of postposition valve 176 and second pressure
The gas circuit of power regulating mechanism 52 is connected；Tonifying Qi interface 106 is additionally provided on multiple-pass joint 96.4th road is equipped with Self-sealing valve
118, one end of Self-sealing valve 118 is sealedly attached on electrical equipment 88, and the one of the other end connection foreline valve 48 of Self-sealing valve 118
End, the other end of foreline valve 48 are connected by multiple-pass joint 98 with the gas circuit of gas density relay 18；The one of postposition valve 178
End is connected by multiple-pass joint 98 with the gas circuit of gas density relay 18, the other end of postposition valve 178 and second pressure
The gas circuit of power regulating mechanism 52 is connected；Tonifying Qi interface 108 is additionally provided on multiple-pass joint 98.
The second pressure regulating mechanism 52, each foreline valve of its third branch and the 4th road, postposition valve, Self-sealing valve
And be directly connected with second pressure regulating mechanism 52 pressure sensor 22, temperature sensor 32 respectively with intelligence control unit 76
It is connected.The contact of the gas density relay 16 of third branch road and the gas density relay 18 of the 4th road respectively with
On-line testing contact point signal sampling unit 66 is connected.On-line testing contact point signal sampling unit 66 and the setting of intelligence control unit 76 exist
Together, it and is set to outside third branch and the 4th branch.
In the present embodiment, first pressure regulating mechanism 51 and the structure of second pressure regulating mechanism 52 can be identical or not
Together.In an advantageous embodiment, first pressure regulating mechanism 51 is cavity open at one end, is equipped with piston in the cavity
511 (piston 511 is equipped with sealing ring 5110), one end of the piston 511 is connected with an adjusting rod, the outer end of the adjusting rod
Driving part 512 is connected, the other end of the piston 511 protrudes into the opening, and is in contact with the inner wall of the cavity, institute
Driving part 512 is stated to drive the adjusting rod and then the piston 511 is driven to move in the cavity；Second pressure adjusts machine
Structure 52 is a closed gas chamber, and the inside of the gas chamber is equipped with piston 521, and the inner wall of the piston 521 and the gas chamber seals
The outside of contact, the gas chamber is equipped with driving part 522, and the driving part 522 pushes the piston 521 to exist by electromagnetic force
The gas indoor moving makes the gas chamber that volume change occur, and then completes the lifting of pressure.
Above-mentioned driving part 512, driving part 522 include but is not limited to magnetic force, motor (variable-frequency motor or stepping electricity
Machine), reciprocating mechanism, Carnot cycle mechanism, one of pneumatic element.
It should be pointed out that the item number of the quantity of pressure regulating mechanism and its corresponding branch is not restricted by, it can basis
It needs to be increased and decreased.
Embodiment eight:
As shown in figure 8, a kind of gas density detecting device for realizing that density monitor is non-maintaining, comprising: two pressure tune
Mechanism is saved, structure is identical, respectively first pressure regulating mechanism 51 and second pressure regulating mechanism 54.Each pressure adjusts machine
A branch is connected in the gas circuit of structure, every branch road is equipped with connector, foreline valve, multiple-pass joint, temperature sensor, pressure
Sensor and micro- water sensor.
By taking first pressure regulating mechanism 51 as an example, branch road is equipped with foreline valve 41, and one end of foreline valve 41 passes through connection
First 161 are sealedly attached on electrical equipment 81, and the other end of foreline valve 41 passes through multiple-pass joint 91 and gas density relay 11
Gas circuit be connected；Temperature sensor 31, pressure sensor 21 are located on gas density relay 11, and pressure sensor 21 is in gas
Road is connected with the gas circuit of gas density relay 11；First pressure regulating mechanism 51 passes through multiple-pass joint 91 and gas density
The gas circuit of relay 11 is connected；It is additionally provided with micro- water sensor 131 on multiple-pass joint 91, first pressure regulating mechanism can be combined
The circulation of 51 pairs of gas, the micro-water content of the plenum interior of accurate measurements to electrical equipment 81.Wherein, the foreline valve 41 seals
Inside first shell 411, the control cable of foreline valve 41 passes through the extraction wire seal 412 that seals with first shell 411
It draws, design in this way ensures that foreline valve 41 seals, and can work reliably and with long-term.In an advantageous embodiment, on connector 161
It is also connected with pressure sensor 181 and temperature sensor 191, together with pressure sensor 181 is located at temperature sensor 191,
Pressure sensor 21 and pressure sensor 181 monitor obtained pressure value and can be compared, and mutually verify；Temperature sensor 31
Monitoring obtained temperature value with temperature sensor 191 can be compared, and mutually verify；It is passed according to pressure sensor 21 and temperature
Sensor 31 monitors obtained density value P120, obtained density value is monitored according to pressure sensor 181 and temperature sensor 191
P220It is compared, mutually verifies；The density value of the rated value of gas density relay 1 can be even obtained with on-line testing
Pe20, it is compared, mutually verifies between each other.As long as pressure sensor 21, pressure sensor 181, temperature sensor 31, temperature
It spends that sensor 191, gas density relay 1 coincide between each other, normal, so that it may illustrate device, gas density relay
Device is all normal.Check-up gas density electrical relay can thus not had to, device is not verified yet, it can be with the life-cycle
Exempt to verify.Unless the pressure sensor 21 of some electrical equipment in substation, pressure sensor 181, temperature sensor 31,
It is that temperature sensor 191, gas density relay 1 are misfitted between each other, abnormal, just maintenance personal is arranged to go to handle.And
For coincideing, normal, just not verified, so, greatly improve reliability, greatly improve efficiency, reduce at
This.Other and so on.
The structure of second pressure regulating mechanism 52 is identical as first pressure regulating mechanism 51, and details are not described herein.
The gas density detecting device of the present embodiment further includes on-line testing contact point signal sampling unit 6 and intelligence control unit 7,
Line verification contact point signal sampling unit 6 and intelligence control unit 7 are set together, and are set to outside each branch.The on-line testing contact
Signal sampling unit 6 is connected with the gas density relay of intelligence control unit 7 and each branch road, samples each gas density relay
Contact point signal when contact movement occurs.The intelligence control unit 7 adjusts machine with first pressure regulating mechanism 51, second pressure respectively
Structure 52 and the foreline valve of each branch road, temperature sensor, pressure sensor, micro- water sensor are connected.
In the present embodiment, first pressure regulating mechanism 51 is identical as the structure of second pressure regulating mechanism 52, is one end
The cavity of opening, the cavity is interior to be equipped with piston (piston is equipped with sealing ring), and one end of the piston is connected with an adjusting rod,
The outer end of the adjusting rod connects driving part, and the other end of the piston protrudes into the opening, and in the cavity
Wall is in contact, and the driving part drives the adjusting rod and then the piston is driven to move in the cavity.
It should be pointed out that the item number of the quantity of pressure regulating mechanism and its corresponding branch is not restricted by, it can basis
It needs to be increased and decreased.
Embodiment nine:
As shown in figure 9, at least two branches, such as three branches are connected in the gas circuit of the pressure regulating mechanism 5, every
Branch road is equipped with on-line testing contact point signal sampling unit, and structure is identical, and respectively on-line testing contact point signal sampling is single
Member 61, on-line testing contact point signal sampling unit 62 and on-line testing contact point signal sampling unit 63, every branch road it is online
Verification contact point signal sampling unit is equipped with the sampling contact being connected with the gas density relay of the branch road, is configured as
Sample the contact point signal of the gas density relay, the on-line testing contact point signal sampling unit of every branch road also with intelligence control
Unit 7 is connected.
The on-line testing contact point signal sampling unit of every branch road is equipped with contact sample circuit.Existed with the first branch
For line verifies contact point signal sampling unit 61, the contact sample circuit includes photoelectrical coupler OC11 and a resistance R11, institute
Stating photoelectrical coupler OC11 includes a light emitting diode and a phototriode；The anode of the light emitting diode and the branch
The contact P of gas density relayJ1Series connection forms closed circuit；The emitter of the phototriode is grounded；Described photosensitive three
The output end out61 connection intelligence control unit 7 of the collector of grade pipe as on-line testing contact point signal sampling unit 61, it is described
The collector of phototriode also passes through the resistance R11 and is controlled to a power supply.
By above-mentioned contact sample circuit, the contact P for knowing the gas density relay of the branch can be convenientJ1It is to disconnect
Or the state of closure.Specifically, as the contact PJ1When closure, closed circuit is powered, the lumination of light emitting diode, and light will
The phototriode conducting, the collector of the phototriode export low level；As the contact PJ1When disconnection, it is closed back
Road is disconnected, and the light emitting diode does not shine, and the phototriode cut-off, the collector of the phototriode exports high
Level.In this way, the output end out61 by on-line testing contact point signal sampling unit 61 exports low and high level.
The present embodiment by the method for Phototube Coupling make the contact point signal control loop of intelligence control unit 7 and the first branch every
From the closing contact P in checking procedureJ1, or contact P in the case where gas leakage occursJ1Also it can close, at this point, detecting
The low level exported to the collector of phototriode.It controls and closes contact P in checking procedureJ1Time in a default length
Degree, thus in the case of non-leak, contact P in checking procedureJThe length of closed state duration be it is determining, by monitoring connect
The low level duration received can judge whether it is generation contact P in checking procedureJ1It closes.It therefore, can in verification
By recording the time, alarm signal when judge the gas density relay sending of the branch is verification, rather than when gas leakage
Alarm signal.
The on-line testing contact point signal sampling of the on-line testing contact point signal sampling unit 62 and third branch of second branch
Unit 63, control circuit is identical as on-line testing contact point signal sampling unit 61, and details are not described herein.
In the present embodiment, intelligence control unit 7 is mainly made of processor 71 (U1), power supply 72 (U2).
Embodiment ten:
As shown in Figure 10, at least two branches, such as three branches are connected in the gas circuit of the pressure regulating mechanism 5, often
Item branch road is equipped with on-line testing contact point signal sampling unit, and structure is identical, and respectively on-line testing contact point signal samples
Unit 61, on-line testing contact point signal sampling unit 62 and on-line testing contact point signal sampling unit 63, every branch road
Line verification contact point signal sampling unit is equipped with the sampling contact being connected with the gas density relay of the branch road, is configured
For the contact point signal for sampling the gas density relay, the on-line testing contact point signal sampling unit of every branch road is also and intelligence
Control unit 7 is connected.
The on-line testing contact point signal sampling unit of every branch road is equipped with contact sample circuit.In the first branch
For on-line testing contact point signal sampling unit 61, the contact sample circuit includes the first photoelectrical coupler OC11 and the second light
Electric coupler OC21.
The light-emitting diodes of the light emitting diode of the first photoelectrical coupler OC11 and the second photoelectrical coupler OC21
Pipe is in parallel by current-limiting resistance respectively, the contact P after parallel connection with the gas density relay of the branchJ1Series connection is formed and is closed back
Road, and the connection direction phase of the light emitting diode of the first photoelectrical coupler OC11 and the second photoelectrical coupler OC21
Instead；Photosensitive the three of the collector of the phototriode of the first photoelectrical coupler OC11 and the second photoelectrical coupler OC21
The collector of pole pipe is controlled to a power supply by divider resistance, the hair of the phototriode of the first photoelectrical coupler OC11
Emitter-base bandgap grading connect to form output end out61 with the emitter of the phototriode of the second photoelectrical coupler OC21, the output end
Out61 is connected with the intelligence control unit 7, and is grounded by a resistance R51.
By above-mentioned contact sample circuit, the contact P for knowing the branch gas density relay can be convenientJ1It is to disconnect also
It is the state of closure.Specifically, as the contact PJ1When closure, closed circuit is powered, and the first photoelectrical coupler OC11 is led
Logical, the second photoelectrical coupler OC21 ends, and the emitter of the phototriode of the first photoelectrical coupler OC11 is (i.e. defeated
Outlet out61) output high level；Alternatively, the first photoelectrical coupler OC11 cut-off, the second photoelectrical coupler OC21 are led
Logical, the emitter (i.e. output end out61) of the phototriode of the second photoelectrical coupler OC21 exports high level.When described
Contact PJ1When disconnection, closed circuit is powered down, and the first photoelectrical coupler OC11, the second photoelectrical coupler OC21 are cut
Only, the emitter of the phototriode of the first photoelectrical coupler OC11 and the second photoelectrical coupler OC21 (exports
Hold out61) output low level.
In an advantageous embodiment, above-mentioned contact sample circuit further includes the first zener diode group and the second pressure stabilizing two
Pole pipe group, the first zener diode group and the second zener diode group are connected in parallel on the contact point signal control loop
On, and the connection of the first zener diode group and the second zener diode group is contrary；First pressure stabilizing two
Pole pipe group and the second zener diode group by one, two or more zener diode it is in series.This
In embodiment, the first zener diode group includes concatenated first zener diode D11 and the second zener diode D21,
The cathode of the first zener diode D11 connects the anode of the second zener diode D21；Second zener diode
Group includes concatenated third zener diode D31 and the 4th zener diode D41, the anode of the third zener diode D31
Connect the cathode of the 4th zener diode D41.
Contact sample circuit can be convenient the contact P realized to the gas density relay of the branchJ1State supervised
It surveys, in conjunction with intelligence control unit 7, by contact PJ1It is that off-state or closed state carry out respective handling, and implement teletransmission, from backstage
It is known that contact point signal state, substantially increases the reliability of power grid.
The on-line testing contact point signal sampling of the on-line testing contact point signal sampling unit 62 and third branch of second branch
Unit 63, control circuit is identical as on-line testing contact point signal sampling unit 61, and details are not described herein.
In the present embodiment, intelligence control unit 7 is mainly made of processor 71 (U1), power supply 72 (U2).
Embodiment 11:
As shown in figure 11, the present embodiment and the difference of embodiment ten are: intelligence control unit 7 mainly by processor 71 (U1),
Power supply 72 (U2), communication module 73 (U3), 75 (U5) of intelligence control cell protection circuit 74 (U4), display and output, data storage 76
(U6) composition such as.
Wherein, the communication modes of communication module 73 (U3) can be wired, such as RS232, RS485, CAN-BUS industry are total
Line, fiber optic Ethernet, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier etc.；It is either wireless, such as
2G/3G/4G/5G etc., WIFI, bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, quantum are logical
Letter, sonar etc..Intelligence control cell protection circuit 74 (U4) can be antistatic interference circuit (such as ESD, EMI), anti-surge circuit, electricity
Fast protection circuit, anti-radiofrequency field interference circuit, anti-impulse train interfere circuit, power supply short-circuit protective circuit, the reversed protection of power supply
Circuit, electric contact misconnection protection circuit, charge protector etc..These intelligence control cell protection circuits can be a kind of or several
Kind flexible combination forms.Display and output 75 (U5) can be charactron, LED, LCD, HMI, display, matrix panel, printer,
Fax, projector, mobile phone etc. can form for a kind of or several flexible combination.Data store 76 (U6) can be FLASH,
The flash cards such as RAM, ROM, hard disk, SD, tape, punch tape, CD, USB flash disk, disk, film etc. can be a kind of or several
Kind flexible combination forms.
Embodiment 12:
As shown in figure 12, at least two branches, such as three branches are connected in the gas circuit of the pressure regulating mechanism 5, often
Item branch road is equipped with on-line testing contact point signal sampling unit, and structure is identical, and respectively on-line testing contact point signal samples
Unit 61, on-line testing contact point signal sampling unit 62 and on-line testing contact point signal sampling unit 63, every branch road
Line verification contact point signal sampling unit is equipped with the sampling contact being connected with the gas density relay of the branch road, is configured
For the contact point signal for sampling the gas density relay, the on-line testing contact point signal sampling unit of every branch road is also and intelligence
Control unit 7 is connected.
The on-line testing contact point signal sampling unit of every branch road is equipped with contact sample circuit.In the first branch
For on-line testing contact point signal sampling unit 61, the contact sample circuit includes the first Hall current sensor H11 and the
Two Hall current sensor H21, the first Hall current sensor H11, the second Hall current sensor H21 and the branch
The contact P of the gas density relay on roadJ1Series connection forms closed circuit, and the contact P of the gas density relayJ1Connection
Between the first Hall current sensor H11 and the second Hall current sensor H21；First Hall current passes
The output end of sensor H11 is connected with the intelligence control unit 7 with the output end of the second Hall current sensor H21.
By above-mentioned contact sample circuit, the contact P for knowing the gas density relay of the branch can be convenientJ1It is to disconnect
Or the state of closure.Specifically, as the contact PJ1When closure, closed circuit is powered, first Hall current sensor
Electric current is flowed through between H11 and the second Hall current sensor H21, generates induced potential；As the contact PJ1When disconnection, close
It closes circuit to be powered down, no current stream between the first Hall current sensor H11 and the second Hall current sensor H21
It crosses, the induced potential of generation is zero.
The on-line testing contact point signal sampling of the on-line testing contact point signal sampling unit 62 and third branch of second branch
Unit 63, control circuit is identical as on-line testing contact point signal sampling unit 61, and details are not described herein.
In the present embodiment, intelligence control unit 7 is mainly by processor 71 (U1), power supply 72 (U2), communication module 73 (U3), intelligence control
75 (U5) of cell protection circuit 74 (U4), display and output, data store the composition such as 76 (U6).
Embodiment 13:
As shown in figure 13, at least two branches, such as three branches are connected in the gas circuit of the pressure regulating mechanism 5, often
Item branch road is equipped with on-line testing contact point signal sampling unit, and structure is identical, and respectively on-line testing contact point signal samples
Unit 61, on-line testing contact point signal sampling unit 62 and on-line testing contact point signal sampling unit 63, every branch road
Line verification contact point signal sampling unit is equipped with the sampling contact being connected with the gas density relay of the branch road, is configured
For the contact point signal for sampling the gas density relay, the on-line testing contact point signal sampling unit of every branch road is also and intelligence
Control unit 7 is connected.
The on-line testing contact point signal sampling unit of every branch road is equipped with contact sample circuit.In the first branch
For on-line testing contact point signal sampling unit 61, the contact sample circuit includes: that the first controllable silicon SCR 11, second is controllable
Silicon SCR21, third controllable silicon SCR 31 and the 4th controllable silicon SCR 41.
First controllable silicon SCR 11 and third controllable silicon SCR 31 are connected, the second controllable silicon SCR 21 and the 4th controllable silicon SCR 41
The series circuit constituted after series connection with the first controllable silicon SCR 11, third controllable silicon SCR 31 forms series-parallel closed circuit；The branch
The contact P of the gas density relay on roadJ1One end pass through route and first controllable silicon SCR 11, third controllable silicon SCR 31
Between route electrical connection, the other end passes through line between route and second controllable silicon SCR 21, the 4th controllable silicon SCR 41
Road electrical connection.Described here is series-parallel as shown in figure 13, is the electricity of above-mentioned component Hybrid connections parallel with one another, concatenated
Road.
Specifically, the cathode of the first controllable silicon SCR 11 and the cathode of the second controllable silicon SCR 21 connect to form the online school
The output end for testing contact point signal sampling unit 61 is connected with intelligence control unit 7；The anode and third of first controllable silicon SCR 11 are controllable
The cathode of silicon SCR31 is connected；The anode of second controllable silicon SCR 21 is connected with the cathode of the 4th controllable silicon SCR 41；Third can
Control the input of the anode of silicon SCR31 and the anode of the 4th controllable silicon SCR 41 and the on-line testing contact point signal sampling unit 61
End is connected.Wherein, the first controllable silicon SCR 11, the second controllable silicon SCR 21, third controllable silicon SCR 31 and the 4th are silicon-controlled
The control electrode of SCR41 is connected with the intelligence control unit 7.The intelligence control unit 7 can control corresponding silicon-controlled on-off.
The course of work of the present embodiment is as follows:
When without verification, when normal operation, the contact PJ1It disconnects, it is silicon-controlled that contact sample circuit triggers third
SCR31 and the 4th controllable silicon SCR 41, third controllable silicon SCR 31 and the 4th controllable silicon SCR 41 are in the conductive state, the first branch
Contact point signal control loop it is in running order.And contact sample circuit does not trigger the first controllable silicon SCR 11 and second at this time
Controllable silicon SCR 21, the cathode Non voltage output of the first controllable silicon SCR 11 and the second controllable silicon SCR 21 are in obstructed state.
When being verified, contact sample circuit does not trigger third controllable silicon SCR 31 and the 4th controllable silicon SCR 41, and touches
Send out the first controllable silicon SCR 11 and the second controllable silicon SCR 21.It is closed at this point, third controllable silicon SCR 31, the 4th controllable silicon SCR 41 are in
Disconnected state, contact PJ1Separate with the contact point signal control loop of the first branch.And the first controllable silicon SCR 11, second is silicon-controlled
SCR21 is in the conductive state, the contact PJ1It is connected to the on-line testing contact point signal sampling unit 61, with intelligence control unit 7
It is connected.
On-line testing contact point signal sampling unit 61 can also be by solid-state relay or electromagnetic relay and silicon-controlled mixing
Flexibly composition.
The on-line testing contact point signal sampling of the on-line testing contact point signal sampling unit 62 and third branch of second branch
Unit 63, control circuit and the course of work are identical as on-line testing contact point signal sampling unit 61, and details are not described herein.
In the present embodiment, intelligence control unit 7 is mainly by processor 71 (U1), power supply 72 (U2), communication module 73 (U3), intelligence control
75 (U5) of cell protection circuit 74 (U4), display and output, data store the composition such as 76 (U6).
Embodiment 14:
As shown in figure 14, the gas density detecting device of the present embodiment includes: pressure sensor 2, temperature sensor 3, valve
4, pressure regulating mechanism 5, on-line testing contact point signal sampling unit 6, intelligence control unit 7.Wherein, pressure sensor 2, temperature sensing
Device 3, valve 4, pressure regulating mechanism 5, on-line testing contact point signal sampling unit 6 with processor 71 (U1) phase of intelligence control unit 7
Connection.
Intelligence control unit 7 further includes power supply 72 (U2), communication module 73 (U3), intelligence control cell protection circuit 74 (U4), display
And 75 (U5) of output and operation, data store 76 (U6).Processor 71 (U1) contains crystal oscillator and filter circuit.Intelligence control cell protection
Circuit 74 (U4) includes surge protection circuit, filter circuit, short-circuit protection circuit, polar protective circuit, overvoltage crowbar etc..
Power supply has 2 grades, further includes voltage reduction module.In communication module 73 (U3), connect by surge protection circuit to communication by communication chip
Mouthful.
The communication modes of above-mentioned communication module 73 (U3) can be wired: such as RS232, RS485, CAN-BUS industry is total
Line, fiber optic Ethernet, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier etc.；It is either wireless: such as
2G/3G/4G/5G etc., WIFI, bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, quantum are logical
Letter, sonar etc..Display and 75 (U5) of output may is that charactron, LED, LCD, HMI, display, matrix panel, printer, biography
Very, projector, mobile phone etc., can a kind of or several flexible combination form.Data store 76 (U6) may is that FLASH,
The flash cards such as RAM, ROM, hard disk, SD, tape, punch tape, CD, USB flash disk, disk, film etc., can be a kind of or several
Flexible combination forms.
Embodiment 15:
As shown in figure 15, the difference of the present embodiment and embodiment 13 are as follows: intelligence control unit 7 includes processor 71 (U1), electricity
Source 72 (U2), communication module 73 (U3) and intelligence control cell protection circuit 74 (U4).The process of pressure sensor 2 overvoltage crowbar,
Operational amplification circuit, to after modulation circuit, using filter circuit to processor 71 (U1).
Embodiment 16:
Figure 16 is a kind of 4-20mA type density transmitter circuit diagram of gas density detecting device.As shown in figure 16,
4-20Ma type density transmitter mainly by microprocessor (containing master controller, crystal oscillator and filter circuit), power supply, modulation circuit,
Electric current loop, protection circuit, analog pressure sensor, operational amplifier, temperature sensor, ratio modulation module, voltage reduction module etc.
Composition.Microprocessor contains crystal oscillator and filter circuit.Protection circuit includes surge protection circuit, filter circuit, short-circuit protection electricity
Road, polar protective circuit, overvoltage crowbar etc..Analog pressure sensor passes through overvoltage crowbar, operational amplification circuit, arrives
After modulation circuit, using filter circuit to microprocessor, such microprocessor can collect pressure value, and collect
Temperature value obtains density value signal after microprocessor calculates conversion.Density value signal is by ratio modulation module, modulation
Circuit, electric current loop obtain the density value of 4-20Ma.
In short, analog pressure sensor, temperature sensor, micro- water sensor after amplifying circuit, are converted to A/D, are arrived
MCU realizes pressure, temperature, moisture content acquisition.Intelligence control unit 7 can contain or connect printer, liquid crystal display, can also be real
Existing USB storage, RS232 communication.
Embodiment 17:
Figure 17 is a kind of configuration diagram of gas density monitoring system.As shown in figure 17, multiple gas density monitoring dresses
It sets and passes sequentially through hub, protocol converter and the connection of remote back-office detection system.Wherein, each gas density detecting device
It is separately positioned on the high voltage electric equipment of corresponding sulfur hexafluoride air cell.
In the present embodiment, remote back-office detection system PC by hub HUB0 and multiple hub HUB (HUB1,
HUB2 ... HUBm) communication.Each one group of gas density detecting device Z of hub HUB connection, such as hub HUB1 connection gas
Volume density monitoring device Z11, Z12 ... Z1n, hub HUB2 connection gas density detecting device Z21, Z22 ...
Z2n ... ..., hub HUBm connection gas density detecting device Zm1, Zm2 ... Zmn, wherein m, n are natural number.
Remote back-office detection system includes: 1) daemon software platform: based on Windows, Linux and other etc., or
VxWorks,Android,Unix,UCos,FreeRTOS,RTX,embOS,MacOS.2) daemon software key business module: example
Such as rights management, equipment management, data be stored in inquiry and user management, alarming and managing, real time data, historical data,
Real-time curve, history curve, configuration management, data acquisition, data parsing, record condition, abnormality processing etc..3) interface configuration:
Such as the interface Form, web interface, configuration interface etc..
Embodiment 18:
Figure 18 is the configuration diagram of another gas density monitoring system.The present embodiment increases net compared with embodiment 17
Network interchanger Gateway, integrated application server S erver, protocol converter/on-line monitoring intelligent cell ProC.
In the present embodiment, remote back-office detection system PC passes through two integrated application clothes of network switch Gateway connection
Be engaged in device Server1, Server2, two integrated application server Ss erver1, Server2 by station level A net and B net with it is multiple
Protocol converter/on-line monitoring intelligent cell ProC (ProC1, ProC2 ... ProCn) communication, protocol converter/online prison
It surveys intelligent cell ProC and passes through R5485 network and multiple hub HUB (HUB1, HUB2 ... HUBm) communication.Each hub
One group of gas density detecting device Z of HUB connection, as hub HUB1 connection gas density detecting device Z11, Z12 ... Z1n,
Hub HUB2 connection gas density detecting device Z21, Z22 ... Z2n ... ..., the monitoring of hub HUBm connection gas density
Device Zm1, Zm2 ... Zmn, wherein m, n are natural number.
Embodiment 19:
Figure 19 is the configuration diagram of another gas density monitoring system.The present embodiment is the framework of wireless transmission method
Schematic diagram, dashed box indicates that wireless module Wn and gas density detecting device Zn can be made one or seperated, specific side in figure
Case can be flexible.
Multiple integrated application server S erver1, Server2 ... Server n passes through cloud Cluod, radio network gateway
The wireless module of (Wireless Gateway) and each gas density detecting device and each gas density detecting device into
Row wireless communication.Wherein, n is natural number.
Other than verifying online to gas density detecting device, system can electrically be set with real-time monitoring breaker, GIS etc.
Physical quantitys and its variation tendencies such as temperature, pressure, density, the micro- water of standby internal SF6 gas, and there is communication interface, by data
Remote back-office detection system is uploaded to, realizes the online of the physical quantitys such as electrical equipments SF6 gas density is, micro- water such as breaker, GIS
Monitoring function, and alarm threshold can be flexibly set, enquiry of historical data, accurate to analyze and determine equipment gas leakage trend and leakage on the spot
Gas rate, there are abnormal conditions in discovering device in advance, to ensure the safe operation of electrical equipment and substation's whole system, really
Realize the on-line monitoring of the electrical equipment of substation, especially unattended station.Equipping rules: system should be layered using bus type
Distributed frame is built, and the three-layer architecture requirement of intelligent substation: process layer (sensor layer, i.e. gas density prison is met
Survey device), wall (data transmission, acquisition process layer), station level (monitoring host, database server etc.), total system
Using IEC61850 standard power communication protocol.Remote back-office detection system is responsible for the collecting of monitoring data, comprehensive analysis, failure
Diagnosis, storage and standardized data forwarding, have real time data displaying, analysis of trend, the inquiry of historical data, Real-time Alarm
Etc. functions.By the system can realize without to scene can gas density to high voltage electric equipment, micro- water exist
Line monitoring can online verify gas density relay and detect, and can be led to by analysis expert software by big data analysis
Trend analysis is crossed, solid foundation is provided for the repair based on condition of component of SF6 electrical equipment, meets grid automation and equipment state overhauling
Needs, safe operation and operation and management level to network system is improved are carried out expected diagnosis and trend analysis, are reduced without meter
Interruption maintenance is drawn to play an important role.
Checking precision can be with associate power industry or national standard.At different temperatures, verification requirement can be according to state
Mark or professional standard, such as mended according to 4.8 temperature in DL/T 259 " sulfur hexafluoride gas density relay verification regulation "
Repay performance provision, required precision corresponding to each temperature value, i.e. its error determine to require be it is different, can be according to standard
Or it makes separate stipulations.It can carry out the comparison of the different annual same periods (or same season), determine.Such as the verification knot in May, 2021
Fruit can make directly comparison, trend analysis and be determined with the check results in May, 2019, the year two thousand twenty May.Verification
Can progress when needing to verify, mobile design can also be carried out, it can A work of transformer substation for a period of time, it is complete
After task, B work of transformer substation can be moved to for a period of time, after completion task, move again to C work of transformer substation.
It is 0.25 grade that the checking precision of the gas density detecting device of the application, which can achieve 20 degree, in high temperature or low temperature
Reach 0.625 grade, checking precision meets the requirements, and economically, in metering meets the requirements or related specifications.
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and
Modification, all should be contained within the scope of the invention.
Claims (63)
1. realizing the non-maintaining gas density detecting device of density monitor characterized by comprising
--- at least one pressure regulating mechanism connects at least one branch in the gas circuit of each pressure regulating mechanism, often
Item branch road is equipped with a foreline valve, and one end of each foreline valve connects equipped with what corresponding electrical equipment was connected
Mouthful, the other end of the foreline valve is equipped with the interface that the gas circuit of corresponding gas density relay is connected；The pressure
The gas circuit of regulating mechanism is connected with the gas circuit of the gas density relay of each branch, and the pressure regulating mechanism is configured as adjusting
The pressure lifting for saving the gas circuit of the gas density relay of each branch makes the gas density relay of branch road that contact occur dynamic
Make；
--- at least one gas density detection sensor is arranged on the branch road or is arranged in the pressure regulating mechanism
On, the gas density detection sensor is connected with the pressure regulating mechanism, for acquire pressure value and temperature value and/
Or gas density value；
--- at least one intelligence control unit is arranged on the branch road, examines respectively with the foreline valve of branch where it, gas density
It surveys sensor to be connected, is configured as turning off or on for the foreline valve of branch where controlling it, receive and/or calculate its place
Gas density value when the contact of the gas density relay of branch acts；Alternatively, the intelligence control unit is arranged described
Outside branch, it is connected respectively with the gas density detection sensor of the foreline valve of each branch, each branch, is configured to each branch road
Foreline valve send identical or different control signal, control turning off or on for each foreline valve, receive and/or calculate each branch
Gas density value when acting of the contact of gas density relay；The intelligence control unit also with the pressure regulating mechanism
It is connected, for completing the control of the pressure regulating mechanism.
2. gas density detecting device according to claim 1, it is characterised in that: generate contact letter when the contact acts
Number, the contact point signal includes alarm, and/or locking.
3. gas density detecting device according to claim 1, it is characterised in that: each branch of the pressure regulating mechanism
On further include connecting tube, one end of the connecting tube of each road be equipped with corresponding gas density relay directly or
It is indirectly connected the first logical connection interface tube, the other end of the connecting tube is equipped with the gas circuit of corresponding pressure regulating mechanism
The second connection interface tube being directly or indirectly connected.
4. gas density detecting device according to claim 1, it is characterised in that: the pressure regulating mechanism is one closed
Gas chamber, the outside or inside of the sealed gas chamber are equipped with heating element, and/or cooling module, by heat the heating element,
And/or freezed by the cooling module, lead to the temperature change of the gas in the sealed gas chamber, and then complete the gas
The pressure lifting of density monitor.Preferably, the heating element, and/or the cooling module are semiconductor.Preferably, institute
Stating pressure regulating mechanism further includes heat preservation member, and the heat preservation member is set to the outside of the sealed gas chamber.
5. gas density detecting device according to claim 1, it is characterised in that: the pressure regulating mechanism is opened for one end
The cavity of mouth, the other end of the cavity are directly or indirectly connected to the gas circuit of the gas density relay of each branch；The cavity
Inside there is piston, one end of the piston is connected with an adjusting rod, and the outer end of the adjusting rod connects driving part, the piston
The other end protrude into the opening, and in sealing contact with the inner wall of the cavity, the driving part drives the adjusting rod
And then the piston is driven to move in the cavity；Alternatively,
The pressure regulating mechanism is a sealed gas chamber, and the inside of the sealed gas chamber is equipped with piston, the piston with it is described close
Hold one's breath room inner wall it is in sealing contact, the outside of the sealed gas chamber is equipped with driving part, and the driving part is pushed by electromagnetism
The piston is moved to move in the sealed gas chamber；Alternatively,
The pressure regulating mechanism is the air bag that one end connects driving part, air bag generating body under the driving of driving part
Product variation；Alternatively,
The pressure regulating mechanism is bellows, and one end of the bellows is connected to the gas density relay of each branch, described
The other end of bellows stretches under the driving of driving part；Or；
The pressure regulating mechanism is a vent valve, and the vent valve is arranged in a closed gas chamber or the vent valve
It is connect with a closed gas chamber；Alternatively,
The pressure regulating mechanism is a compressor；Alternatively,
The pressure regulating mechanism is a pump, and the pump including but not limited to makes press pump, booster pump, electric air pump or electromagnetism gas
Pump；
Wherein, the driving part includes but is not limited to magnetic force, motor, reciprocating mechanism, Carnot cycle mechanism, pneumatic member
One of part.
6. gas density detecting device according to claim 1, it is characterised in that: the pressure regulating mechanism is sealed in one
In a cavity or shell.
7. gas density detecting device according to claim 1, it is characterised in that: the foreline valve be motor-driven valve, and/or
Solenoid valve, or be piezo electric valve, or be temperature controlled valve, or for using the production of intelligent memory material, opened using electric heating
Or the new type of valve closed.
8. gas density detecting device according to claim 1, it is characterised in that: the foreline valve is hose bending or folder
The realization of flat formula turns off or on.
9. gas density detecting device according to claim 1, it is characterised in that: the foreline valve is sealed in a cavity
Or in shell.
10. gas density detecting device according to claim 1, it is characterised in that: the foreline valve is closed, the pressure
Regulating mechanism boosting, load increase or pressure regulating mechanism decompression, load reduce, and the pace of change of load is each second
No more than the 10 ‰ of the range of monitored gas density relay.
11. gas density detecting device according to claim 1, it is characterised in that: the gas circuit two sides of the foreline valve point
Pressure sensor is not provided with it；Alternatively, the gas circuit two sides of the foreline valve are respectively arranged with pressure or density detector.
12. gas density detecting device according to claim 1, it is characterised in that: the front end of the foreline valve is equipped with close
Relay or density switch are spent, exports the signal of a safety check set point, which connect with the intelligence control unit.
13. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including at least one postposition valve, the postposition valve is set to the branch road, and is located at after the foreline valve, the postposition valve
One end is equipped with the interface that the gas circuit of corresponding gas density relay is connected, the other end of the postposition valve and the pressure
The gas circuit of power regulating mechanism is directly or indirectly connected to；The postposition valve is also connected with the intelligence control unit, in the intelligence control list
It is turned off or under the control of member.Preferably, the postposition valve is automatically controlled or is manually controlled.
14. gas density detecting device according to claim 1, it is characterised in that: the gas density detection device is also
Including at least one multiple-pass joint, the multiple-pass joint is arranged on each branch road, and each multiple-pass joint is equipped with connection gas
First connector of density monitor, the second connector equipped with connection foreline valve are equipped with connection pressure regulating mechanism third connector, In
The inside of the multiple-pass joint, first connector, second connector are connected with the third connector.
15. gas density detecting device according to claim 14, it is characterised in that: the third connector of the multiple-pass joint
At least one postposition valve is equipped between the pressure regulating mechanism, one end of the postposition valve passes through the multiple-pass joint and its
The gas circuit of corresponding gas density relay is connected, and the gas circuit of the other end and the pressure regulating mechanism of the postposition valve is straight
It connects or indirect communication；The postposition valve is also connected with the intelligence control unit, closes or opens under the control of the intelligence control unit
It opens.
16. gas density detecting device according to claim 14, it is characterised in that: the second connector of the multiple-pass joint
Place, the interconnecting piece of the gas chamber docking equipped with corresponding electrical equipment, the foreline valve are embedded in the interconnecting piece.
17. gas density detecting device according to claim 14, it is characterised in that: state gas density detecting device and also wrap
Micro- water sensor for monitoring the micro- water number of gas on-line is included, micro- water passes institute's sensor and is arranged on the multiple-pass joint, institute
Micro- water sensor is stated to be connected with the intelligence control unit.
18. gas density detecting device according to claim 17, it is characterised in that: the gas density detecting device is also
Including gas circulation mechanism, the gas circulation mechanism is arranged on the multiple-pass joint, the gas circulation mechanism with it is described
Intelligence control unit is connected, and the gas circulation mechanism includes capillary, sealed chamber and heating element, by heating heating unit
Part realizes gas flowing, monitors micro- water number of gas interior on-line.
19. gas density detecting device according to claim 14, it is characterised in that: the gas density detecting device is also
Including the decomposition product sensor for monitoring gas decomposition product on-line, the decomposition product sensor is arranged in the multiple-pass joint
On, the decomposition product sensor is connected with the intelligence control unit.
20. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including at least one on-line testing contact point signal sampling unit, the on-line testing contact point signal sampling unit is arranged in the branch
On the road, equipped with the sampling contact being connected with the gas density relay of branch where it, it is configured as branch where sampling it
Gas density relay occur contact movement when contact point signal；Alternatively, the on-line testing contact point signal sampling unit is set
It sets outside the branch, equipped with the sampling contact being connected with the gas density relay of each branch, is configured as sampling each
Contact point signal when contact movement occurs for the gas density relay on road；The on-line testing contact point signal sampling unit also with institute
Intelligence control unit is stated to be connected.
21. gas density detecting device according to claim 20, it is characterised in that: each on-line testing contact letter
Number sampling unit is equipped at least two independent sampling contacts, can simultaneously to the contact of at least two gas density relays from
Dynamic completion verification, and continuously measure, contact need not be replaced or reselect contact；Wherein,
The contact including but not limited to alarm contact, alarm contact+locking contact, alarm contact+1 contact of locking+locking 2
One of contact, alarm contact+locking contact+superpressure contact.
22. gas density detecting device according to claim 20, it is characterised in that: the on-line testing contact point signal is adopted
Sample unit is not less than 24V to the contact action value of monitored gas density relay or the test voltage of its switching value.
23. gas density detecting device according to claim 20, it is characterised in that: the on-line testing contact point signal is adopted
Sample unit and the intelligence control unit are set together.Preferably, the on-line testing contact point signal sampling unit and the intelligence control
Unit is sealed in a cavity or shell.
24. gas density detecting device according to claim 20, it is characterised in that: the on-line testing contact point signal is adopted
Sample unit includes the first connection circuit and the second connection circuit；The monitored gas density relay of the first connection circuit connection
The contact of device and contact point signal control loop, the contact of the monitored gas density relay of the second connection circuit connection with
The intelligence control unit；
Under non-verification state, contact is open type density monitor, and the second connection circuit disconnects or isolation, described first
Connect closing of circuit；Under verification state, the first connection circuit is disconnected, the second connection circuit communication, by the gas
The contact of volume density relay is connected with the intelligence control unit；Alternatively,
Under non-verification state, contact is closed type density monitor, and the second connection circuit disconnects or isolation, described first
Connect closing of circuit；Under verification state, the contact point signal control loop closure, the contact and contact of gas density relay
The connection of signal control loop disconnects, the second connection circuit communication, by the contact of the gas density relay with it is described
Intelligence control unit is connected.
25. gas density detecting device according to claim 24, it is characterised in that: the first connection circuit includes the
One relay, the second connection circuit includes the second relay, and first relay is equipped at least one normally closed contact, institute
The second relay is stated equipped at least one normal opened contact, the normally closed contact and the normal opened contact keep opposite switch shape
State；The normally closed contact is connected in the contact point signal control loop, the normal opened contact be connected to the gas density after
On the contact of electric appliance；
Under non-verification state, the normally closed contact closure, the normal opened contact is disconnected, and the gas density relay is supervised in real time
Survey the output state of the contact；Under verification state, the normally closed contact is disconnected, the normal opened contact closure, the gas
The contact of density monitor is connected by the normal opened contact with the intelligence control unit.
26. gas density detecting device according to claim 25, it is characterised in that: first relay and described the
Two relays are two independent relays or the same relay.
27. gas density detecting device according to claim 20, it is characterised in that: the on-line testing contact point signal
The contact of sampling unit and monitored gas density relay passes through Phototube Coupling on circuit.
28. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit is based on micro process
The embedded system of device embeds algorithm and control program, automatically controls entire checking procedure, includes all peripheral hardwares, logic and input
Output.
29. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit is to working environment
At a temperature of gas density relay contact value and/or rated pressure value measure, and according to gas pressure-temperature characteristic
Corresponding pressure value, i.e. gas density value when automatic conversion becomes 20 DEG C, contact value of the canbe used on line to gas density relay
And/or the performance detection of rated pressure value, complete the on-line testing work of gas density relay.
30. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit is also monitored on-line
The pressure value and temperature value, and/or gas density value of electrical equipment realize the on-line monitoring to the gas density of electrical equipment.
31. gas density detecting device according to claim 30, it is characterised in that: the intelligence control unit uses averaging method
Calculate the gas density value, the averaging method are as follows: in the time interval of setting, set frequency acquisition, will all acquire
N number of gas density value of the different time points arrived carries out mean value calculation processing, obtains its gas density value；Alternatively,
Time interval, set temperature interval steps in setting, the N number of different temperatures collected in whole temperature ranges
The corresponding density value of value carries out mean value calculation processing, obtains its gas density value；Alternatively,
Time interval, setting pressure intervals step-length in setting, the N number of difference collected in whole pressure ranges
Density value corresponding to pressure value carries out mean value calculation processing, obtains its gas density value；
Wherein, N is the positive integer more than or equal to 1.
32. gas density detecting device according to claim 1, it is characterised in that: it is close that the intelligence control unit obtains gas
Spend relay occur contact movement or switching when, the gas density detection sensor acquisition gas density value, complete gas
The on-line testing of density monitor；Alternatively,
The intelligence control unit obtains gas density relay when occurring the signal of contact movement or switching, gas density detection
The pressure value and temperature value of sensor acquisition, and become corresponding 20 DEG C of pressure value according to gas pressure-temperature Characteristic conversion, i.e.,
Gas density value completes the on-line testing of gas density relay.
33. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit measurement is opposite to press
The gas density relay of power, and/or absolute pressure type.
34. gas density detecting device according to claim 1, it is characterised in that: the circuit of the intelligence control unit includes
Intelligence control cell protection circuit, the intelligence control cell protection circuit include the quickly protection of antistatic interference circuit, anti-surge circuit, electricity
Circuit, anti-radiofrequency field interference circuit, anti-impulse train interference circuit, power supply short-circuit protective circuit, the reversed protection circuit of power supply, electricity connect
One of point misconnection protection circuit, charge protector are several.
35. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit further includes communication
Module, for realizing remote transmitting test data and/or check results；The communication modes of the communication module are wire communication
Or wireless communication mode.
36. gas density detecting device according to claim 1, it is characterised in that: the intelligence control unit is equipped with and electrically connects
Mouthful, the electric interfaces are printed for completing test data storage and/or test data export and/or test data, and/or
Data communication, and/or input analog quantity, digital information are carried out with host computer.Preferably, the electric interfaces are equipped with and prevent from using
The electric interfaces that family misconnection causes interface to damage, and/or prevent electromagnetic interference protect circuit.
37. gas density detecting device according to claim 1, it is characterised in that: when being additionally provided on the intelligence control unit
Clock, the clock is for being periodically arranged checking time perhaps recording test time or record event time.
38. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is complete
After detection, the verification of the intelligence control automatic cell generation gas density relay is reported, automatic to issue alarm if any exception,
And/or it is uploaded to distal end, and/or be sent on specified receiver.
39. gas density detecting device according to claim 1, it is characterised in that: the gas density detection sensor
It is integrated；Alternatively, the gas density transmitter that the gas density detection sensor is integrated；The gas
The gas density value or density value, pressure value, temperature value and/or teletransmission gas density relay of density transmitter teletransmission monitoring
Contact point signal.
40. gas density detecting device according to claim 1, it is characterised in that: the gas density relay, described
Gas density detection sensor is integrated；Alternatively, the gas density relay, the gas density detection sensor
The telemetering type gas density relay being integrated；The gas density of the telemetering type gas density relay teletransmission monitoring
Value or density value, pressure value, temperature value and/or teletransmission gas density relay contact point signal.
41. gas density detecting device according to claim 1, it is characterised in that: the gas density detection sensor
Including at least one pressure sensor and at least one temperature sensor；Alternatively, using by pressure sensor and temperature sensor
The gas density transmitter of composition；Alternatively, using the density detection sensor of quartz tuning-fork technology.
42. gas density detecting device according to claim 41, it is characterised in that: the pressure sensor is installed on institute
It states in the gas circuit of pressure regulating mechanism；
The temperature sensor is installed in the gas circuit of the gas density relay of each branch or outside gas circuit or the gas density
In relay or outside the gas density relay.
43. gas density detecting device according to claim 41, it is characterised in that: at least one temperature sensor is set
It sets near the temperature compensating element of monitored gas density relay or is arranged on temperature compensating element, or be integrated in
In temperature compensating element.Preferably, the pressure detecting of the gas density relay is arranged at least one temperature sensor
Device is close to one end of the temperature compensating element.
44. gas density detecting device according to claim 41, it is characterised in that: the intelligence control unit is by environment temperature
Value is compared with the temperature value of each temperature sensor acquisition, completes the verification to each temperature sensor.
45. gas density detecting device according to claim 41, it is characterised in that: the gas density detection sensor
Including at least two pressure sensors, the pressure value of each pressure sensor acquisition is compared, and is completed to each pressure sensing
The mutual verification of device.
46. gas density detecting device according to claim 41, it is characterised in that: the gas density detection sensor
Including at least two temperature sensors, the temperature value of each temperature sensor acquisition is compared, and is completed to each temperature sensing
The mutual verification of device.
47. gas density detecting device according to claim 41, it is characterised in that: the gas density detection sensor
Including at least one pressure sensor and at least one temperature sensor；The pressure value and each temperature of each pressure sensor acquisition
The temperature value random alignment combination of sensor acquisition is spent, and each combination is become more according to gas pressure-temperature Characteristic conversion
The pressure value of 20 DEG C of a correspondence, i.e. gas density value, each gas density value are compared, complete to each pressure sensor,
The mutual verification of each temperature sensor；Alternatively, the pressure value and the acquisition of each temperature sensor of each pressure sensor acquisition
Temperature value go through all over all permutation and combination, and each combination is become into multiple correspondences 20 according to gas pressure-temperature Characteristic conversion
DEG C pressure value, i.e. gas density value, each gas density value be compared, and completes to each pressure sensor, each temperature
The mutual verification of sensor；Alternatively, multiple gas density values and gas that each pressure sensor, each temperature sensor are obtained
The comparison density value output signal of volume density relay output is compared, and completes to pass gas density relay, each pressure
The mutual verification of sensor, each temperature sensor；Alternatively, each pressure sensor, each temperature sensor are obtained multiple
Gas density value, pressure value, temperature value are compared, and complete to gas density relay, each pressure sensor, each temperature
The mutual verification of sensor.
48. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device packet
At least two gas density detection sensors are included, each gas density detection sensor includes a pressure sensor, one
Temperature sensor；The gas density value of each gas density detection sensor detection is compared, and completes to each gas density
The mutual verification of detection sensor.
49. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including the data display interface for human-computer interaction, Current data values can be refreshed in real time；And/or support data input.
50. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including the power supply for each power supply for electrical equipment, the power supply includes power supply circuit perhaps battery or recyclable charging
Perhaps perhaps mutual inductor takes electric obtained power supply or induction power supply to solar energy to battery.
51. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including the camera for monitoring.
52. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device can
To carry out online tonifying Qi.
53. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device can
To carry out online gas dry.
54. gas density detecting device according to claim 1, it is characterised in that: the on-site detecting device has certainly
Diagnostic function, can be to abnormal timely bulletin.
55. gas density detecting device according to claim 1, it is characterised in that: the on-site detecting device has peace
All risk insurance protective function: when gas density value or pressure value are lower than setting value, just automatically without verification, concurrent placarding signal.
56. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Equipped with the temperature protective device to electronic component, for guaranteeing that electronic component is reliable under the environment temperature of low temperature or high temperature
Work.Preferably, the temperature protective device includes heater and/or radiator, and heating is opened when temperature is lower than setting value
Device opens radiator when temperature is higher than setting value.
57. gas density detecting device according to claim 1, it is characterised in that: the gas density detecting device is also
Including analysis system, the monitoring of gas density value, the electric property of gas density relay, monitoring element are tested and analyzed,
Determine.
58. realizing that the non-maintaining gas density of density monitor monitors system, it is characterised in that: the system is by claim 1
It is constituted to 57 described in any item gas density detecting devices for realizing that density monitor is non-maintaining；Alternatively, the system comprises
The described in any item gas density detecting devices for realizing that density monitor is non-maintaining of claim 1 to 57.
59. realizing the non-maintaining gas density monitoring method of gas density relay, which is characterized in that including realizing gas density
The non-maintaining gas density detecting device of relay, the gas density detecting device include at least one pressure regulating mechanism, extremely
Lack a gas detection sensor and at least one intelligence control unit, connects at least one branch in the gas circuit of the pressure regulating mechanism
Road, every branch road are equipped with a foreline valve；The gas density monitoring method includes:
The corresponding electrical equipment in one end of the foreline valve of each branch road of pressure regulating mechanism is connected to, the foreline valve
The gas circuit of the corresponding gas density relay of the other end is connected to；The gas circuit of pressure regulating mechanism and the gas of each branch is close
The gas circuit of degree relay is connected；Intelligence control unit and the gas density relay of branch where it are linked together, or will
Intelligence control unit and the gas density relay of each branch link together；
When normal operating conditions, the gas density detecting device monitors the gas density in the gas density relay of each branch
Value；
The gas density detecting device is according to the checking time or/and checking command of setting and the gas density of each branch
It is worth situation, under the situation for allowing check-up gas density electrical relay:
Pressure regulating mechanism is adjusted to by intelligence control unit the original state of verification；
The foreline valve of setting branch is closed by intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly so that setting branch gas density after
Contact movement occurs for electric appliance, and contact movement is transmitted to intelligence control unit, pressure value, temperature value when intelligence control unit is acted according to contact
Density value is obtained, or directly obtains gas density value, detects the contact action value of the gas density relay of setting branch, it is complete
At the verifying work of the contact action value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opens the foreline valve of setting branch.
60. the gas density monitoring method according to claim 59 for realizing that gas density relay is non-maintaining, feature
It is, further includes:
After the gas density detecting device completes the verifying work of the contact action value of gas density relay, and the intelligence
Before control unit sets valve before opening, by intelligence control unit driving pressure regulating mechanism, slowly increase gas pressure, so that setting
The gas density relay for determining branch occurs contact and resets, and contact reset is transmitted to intelligence control unit, and intelligence control unit is multiple according to contact
Pressure value, temperature value when position obtain gas density value, or directly obtain gas density value, detect that the gas of setting branch is close
The contact return value for spending relay, completes the verifying work of the contact return value of gas density relay.
61. according to the described in any item gas density monitoring sides for realizing that gas density relay is non-maintaining of claim 59 or 60
Method, which is characterized in that the gas density detecting device further includes on-line testing contact point signal sampling unit, the on-line testing
Contact point signal sampling unit is connected with the intelligence control unit；The gas density monitoring method includes:
For gas density relay under verification state, the on-line testing contact point signal sampling unit cuts off gas density relay
Contact point signal control loop, the contact of gas density relay is connected to the intelligence control unit, to gas density relay
Contact point signal sampled, and be transmitted to the intelligence control unit.
62. the non-maintaining gas density monitoring method of realization gas density relay according to claim 59 or 60,
Be characterized in that: after the gas density relay completes verification, if any exception, the gas density detecting device issues report automatically
It is alert, and/or be uploaded to distal end, and/or be sent on specified receiver.
63. the gas density monitoring method according to claim 59 for realizing that gas density relay is non-maintaining, feature
It is, the gas density detecting device further includes at least one postposition valve, and the postposition valve is set to the branch road, and is located at
After the foreline valve of the branch, the gas density monitoring method further include:
One end of postposition valve is directly or indirectly connected to the gas circuit of the gas density relay of branch where it, by postposition valve
The other end is directly or indirectly connected to the gas circuit of the pressure regulating mechanism；By the intelligence control unit phase of postposition valve and branch where it
Connection, or postposition valve is connected with the intelligence control unit outside branch；The postposition valve is configured as the gas of verification setting branch
When volume density relay, separate pressure regulating mechanism in gas circuit with other branches；
When the gas density relay of verification setting branch, the foreline valve of setting branch is closed by intelligence control unit, and lead to simultaneously
The postposition valve that intelligence control unit closes other branches is crossed, pressure regulating mechanism is made and sets the gas density relay of branch in gas circuit
Connection, while separating in gas circuit with other branches；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly so that setting branch gas density after
Contact movement occurs for electric appliance, and contact movement is transmitted to intelligence control unit, pressure value, temperature value when intelligence control unit is acted according to contact
Density value is obtained, or directly obtains gas density value, detects the contact action value of the gas density relay of setting branch, it is complete
At the verifying work of the contact action value of the gas density relay of setting branch.
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| CN201910830225.2A CN110441191A (en) | 2019-09-04 | 2019-09-04 | Realize the non-maintaining gas density detecting device of density monitor, system and method |
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