CN110426314A - On-line sampling check-up gas density electrical relay with defencive function - Google Patents
On-line sampling check-up gas density electrical relay with defencive function Download PDFInfo
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- CN110426314A CN110426314A CN201910830273.1A CN201910830273A CN110426314A CN 110426314 A CN110426314 A CN 110426314A CN 201910830273 A CN201910830273 A CN 201910830273A CN 110426314 A CN110426314 A CN 110426314A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/2607—Means for adjustment of "ON" or "OFF" operating pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/28—Compensation for variation of ambient pressure or temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
- H01H35/30—Means for transmitting pressure to pressure-responsive operating part, e.g. by capsule and capillary tube
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- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The application provides a kind of on-line sampling check-up gas density electrical relay with defencive function, including gas density relay ontology, gas density detection sensor, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit and intelligence control unit.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 first connection circuit connection gas density relay ontology, the contact and intelligence control unit of the second connection circuit connection gas density relay ontology；Non- verification state, the second connection circuit disconnect, the first connection closing of circuit；Verification state, first connection circuit disconnects, connection the second connection circuit, the contact of gas density relay ontology is connected with intelligence control unit, when ensuring to examine, contact action signal is not uploaded, and does not influence the safe operation of power grid, it realizes the non-maintaining of gas density relay simultaneously, greatly improve benefit and improves the reliable and secure operation of power grid.
Description
Technical field
The present invention relates to technical field of electric power more particularly to it is a kind of apply in high pressure, middle voltage electrical equipment, have protection
The on-line sampling check-up gas density electrical relay of function.
Background technique
Gas density relay is generally used for monitoring and controlling the density of high voltage electric equipment interior insulation gas, inside
Equipped with contact point signal control loop, the gas chamber of the gas circuit connection high voltage electric equipment of gas density relay occurs when detecting
When gas leaks, the contact movement of gas density relay generates contact point signal, contact point signal control loop is believed according to contact
Number, it 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, so the on-line monitoring of gas density and micro-water content state to SF6 electrical equipment has important practical significance.With
Chinese smart grid is constantly greatly developed, important component and key of the intelligent high-pressure electrical equipment as intelligent substation
Node plays very important effect to the safety of smart grid.High voltage electric equipment is mostly that SF6 gas-insulated is set at present
It is standby, if gas density reduces and (such as leak and cause) electric property that will seriously affect equipment, safe operation is caused seriously
Hidden danger.Gas density value at present in on-line monitoring SF6 high voltage electric equipment is very universal, and gas density monitors thus
System (gas density relay) application will flourish.And current gas density monitors system (gas density relay) base
It is in sheet: 1) realizes the acquisition of density, pressure and temperature using telemetering type SF6 gas density is relay, upload, realizes that gas is close
Degree on-line monitoring.2) acquisition that density, pressure and temperature are realized using gas density transmitter, uploads, and realizes that gas density exists
Line monitoring.SF6 gas density is relay is core and critical component.But since the environment of high voltage substation scene operation is disliked
Bad, especially electromagnetic interference is very strong, in gas density monitoring system (gas density relay) used at present, telemetering type
SF6 gas density is relay is made of mechanical density monitor and electronic long-distance transmission part；In addition, becoming using gas density
It send in the network system of device, all also retains traditional mechanical density monitor.The mechanical density monitor has one group, two groups
Or three groups of mechanical contacts, information can be connected into circuit by contact in time in the state of pressure arrival alarm, locking or superpressure
It is transmitted to target device terminal, guarantees equipment safety operation.Meanwhile monitoring system is also equipped with safe and reliable circuit transmission function
Can, active platform is established with information monitoring to realize that real time data teledata is read, pressure, temperature, density etc. can be believed
Breath is transmitted to target device (such as computer terminal) in time and realizes on-line monitoring.
Periodic inspection is carried out to the gas density relay on electrical equipment, is to prevent trouble before it happens, ensures electrical equipment peace
The requisite measure of full reliability service." electric power preventive trial regulation " and " prevent 25 Xiang Chong of power generation major accident
Point requires " it requires and regularly gas density relay is verified.From the point of view of practical operation situation, to gas density after
It is to ensure one of power equipment safety, necessary means of reliability service that electric appliance, which carries out periodic check,.Therefore, at present gas density after
The verification of electric appliance has been paid much attention to and has been popularized in electric system, and each power supply company, power plant, large factories and mines enterprises are all real
It applies.And power supply company, power plant, large factories and mines enterprises are to complete the field-checking detection work of gas density relay to need to be equipped with
The SF6 gas of tester, equipment vehicle and high value.Including power failure operating loss when detection, rough calculation, each
The testing cost of high voltage switchyard shared every year about arrives hundreds of thousands member or so tens of thousands of.In addition, testing staff's field-checking is such as
Fruit non-standard operation, there is also security risks.For this purpose, very necessary in existing gas density self checking gas density relay
It in the online self checking gas density relay of device, especially gas density or system, is innovated, makes to realize that gas density is online
Also with the verifying function of gas density relay in the gas density relay of monitoring or the monitoring system of composition, and then complete
The periodic check of (mechanical) gas density relay works, and without service personnel to scene, greatly improves work efficiency, and drops
Low cost.
Summary of the invention
The on-line sampling check-up gas density electrical relay that the purpose of the present invention is to provide a kind of with defencive function and its
Method of calibration, to solve the problems, such as to propose in above-mentioned technical background.
To achieve the above object, the invention adopts the following technical scheme:
The application first aspect provides a kind of on-line sampling check-up gas density electrical relay with defencive function, packet
It includes: gas density relay ontology, gas density detection sensor, pressure regulating mechanism, valve, the sampling of on-line testing contact point signal
Unit and intelligence control unit；
The gas circuit of the pressure regulating mechanism is connected with the gas circuit of the gas density relay ontology；The pressure
Regulating mechanism is configured as adjusting the pressure lifting of the gas density relay ontology, makes the gas density relay ontology
Contact point signal movement occurs；
The gas density detection sensor is connected to the gas density relay ontology；
One end of the valve be equipped with the interface that is connected with electrical equipment, the other end of the valve and the gas density after
The gas circuit of electric appliance ontology is connected；
The on-line testing contact point signal sampling unit, including the first connection circuit and the second connection circuit, described first
The contact and contact point signal control loop of gas density relay ontology described in circuit connection are connected, the second connection circuit connects
Connect the contact and the intelligence control unit of the gas density relay ontology；Under non-verification state, contact is open type density
Relay, the second connection circuit disconnects or isolation, the first connection closing of circuit；It is described online under verification state
Contact point signal sampling unit cutting the first connection circuit is verified, the second connection circuit is connected to, by the gas density
The contact of relay ontology is connected with the intelligence control unit；Alternatively, contact is closed type density relay under non-verification state
Device, the second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing
Contact point signal sampling unit is closed the contact point signal control loop, and the contact and contact for cutting off gas density relay ontology are believed
The connection of number control loop is connected to the second connection circuit, by the contact of the gas density relay ontology and the intelligence
Control unit is connected；
The intelligence control unit, respectively with the gas density detection sensor, the pressure regulating mechanism, the valve and institute
It states on-line testing contact point signal sampling unit to be connected, is configured as controlling turning off or on for the valve, completes the pressure
The control of regulating mechanism, pressure value acquisition and temperature value acquisition, and/or the acquisition of gas density value, and the detection gas are close
Spend the contact point signal action value and/or contact point signal return value of relay ontology；
Wherein, the contact point signal includes alarm, and/or locking.
The application the second aspect provides a kind of gas density detecting device with defencive function, comprising: gas is close
Spend relay ontology, gas density detection sensor, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit and intelligence
Control unit；
The gas circuit of the pressure regulating mechanism is connected with the gas circuit of the gas density relay ontology；The pressure
Regulating mechanism is configured as adjusting the pressure lifting of the gas density relay ontology, makes the gas density relay ontology
Contact point signal movement occurs；
The gas density detection sensor is connected to the gas density relay ontology；
One end of the valve be equipped with the interface that is connected with electrical equipment, the other end of the valve and the gas density after
The gas circuit of electric appliance ontology is connected；
The on-line testing contact point signal sampling unit, including the first connection circuit and the second connection circuit, described first
The contact and contact point signal control loop of gas density relay ontology described in circuit connection are connected, the second connection circuit connects
Connect the contact and the intelligence control unit of the gas density relay ontology；Under non-verification state, contact is open type density
Relay, the second connection circuit disconnects or isolation, the first connection closing of circuit；It is described online under verification state
Contact point signal sampling unit cutting the first connection circuit is verified, the second connection circuit is connected to, by the gas density
The contact of relay ontology is connected with the intelligence control unit；Alternatively, contact is closed type density relay under non-verification state
Device, the second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing
Contact point signal sampling unit is closed the contact point signal control loop, and the contact and contact for cutting off gas density relay ontology are believed
The connection of number control loop is connected to the second connection circuit, by the contact of the gas density relay ontology and the intelligence
Control unit is connected；
The intelligence control unit, respectively with the gas density detection sensor, the pressure regulating mechanism, the valve and institute
It states on-line testing contact point signal sampling unit to be connected, is configured as controlling turning off or on for the valve, completes the pressure
The control of regulating mechanism, pressure value acquisition and temperature value acquisition, and/or the acquisition of gas density value, and the detection gas are close
Spend the contact point signal action value and/or contact point signal return value of relay ontology；
Wherein, the contact point signal includes alarm, and/or locking.
Preferably, the first connection circuit includes the first relay, and the second connection circuit includes the second relay,
First relay is equipped at least one normally closed contact, and second relay is equipped at least one normal opened contact, described normal
It closes contact and the normal opened contact keeps opposite switch state；The normally closed contact is connected on the contact point signal control loop
In, the normal opened contact is connected on the contact of the gas density relay ontology；
Under non-verification state, the normally closed contact closure, the normal opened contact is disconnected, and the gas density relay is real
When monitor the output state of the contact；Under verification state, the normally closed contact is disconnected, the normal opened contact closure, described
The contact of gas density relay ontology is connected by the normal opened contact with the intelligence control unit.
It, can also be with it is highly preferred that first relay and second relay can be two independent relays
It is the same relay.
Preferably, the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sample circuit
Including photoelectrical coupler and a resistance, the photoelectrical coupler includes a light emitting diode and a phototriode；It is described to shine
The contact of diode and the gas density relay ontology connects to form closed circuit；The emitter of the phototriode connects
Ground；The collector of the photosensitive triode connects the intelligence control unit, and the collector of the phototriode also passes through the electricity
Resistance is controlled to a power supply；
When the junction closure, closed circuit is powered, and the lumination of light emitting diode, light leads the phototriode
Logical, the collector of the phototriode exports low level；
When the contact disconnects, closed circuit is disconnected, and the light emitting diode does not shine, and the phototriode is cut
Only, the collector of the phototriode exports high level.
Preferably, the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sample circuit
Including the first photoelectrical coupler and the second photoelectrical coupler；
The light emitting diode of the light emitting diode of first photoelectrical coupler and second photoelectrical coupler leads to respectively
Current-limiting resistance parallel connection is crossed, connects to form closed circuit with the contact of the gas density relay ontology after in parallel, and described the
The connection of the light emitting diode of one photoelectrical coupler and second photoelectrical coupler is contrary；
Photosensitive three pole of the collector of the phototriode of first photoelectrical coupler and second photoelectrical coupler
The collector of pipe is controlled to a power supply by divider resistance, the emitter of the phototriode of first photoelectrical coupler with
The emitter of the phototriode of second photoelectrical coupler connects to form output end, the output end and the intelligence control unit phase
Connection, and pass through a resistance eutral grounding；
When the junction closure, closed circuit is powered, the first photoelectrical coupler conducting, second photoelectric coupling
The emitter of device cut-off, the phototriode of first photoelectrical coupler exports high level；Alternatively, first photoelectric coupling
Device cut-off, the second photoelectrical coupler conducting, the high electricity of emitter output of the phototriode of second photoelectrical coupler
It is flat；
When the contact disconnects, closed circuit is powered down, first photoelectrical coupler, second photoelectrical coupler
It is turned off, the emitter of the phototriode of first photoelectrical coupler and second photoelectrical coupler exports low level.
It is highly preferred that the contact sample circuit further includes the first zener diode group and the second zener diode group, institute
It states the first zener diode group and the second zener diode group is connected in parallel in the contact point signal control loop, and described
The connection of one zener diode group and the second zener diode group is contrary；The first zener diode group and described
Second zener diode group by one, two or more zener diode it is in series.
Further, the first zener diode group includes two pole of concatenated first zener diode and the second pressure stabilizing
Pipe, the cathode of first zener diode connect the anode of second zener diode；The second zener diode group
Including concatenated third zener diode and the 4th zener diode, the anode connection the described 4th of the third zener diode
The cathode of zener diode.
Preferably, the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sample circuit
Including the first Hall current sensor and the second Hall current sensor, first Hall current sensor, described second are suddenly
The contact of that current sensor and the gas density relay ontology connects to form closed circuit, and the gas density relay
The contact of device ontology is connected between first Hall current sensor and second Hall current sensor；Described first
The output end of Hall current sensor is connected with the intelligence control unit with the output end of second Hall current sensor；
When the junction closure, closed circuit is powered, first Hall current sensor and second Hall electricity
Electric current is flowed through between flow sensor, generates induced potential；
When the contact disconnects, closed circuit is powered down, first Hall current sensor and second Hall
No current flows through between current sensor, and the induced potential of generation is zero.
Preferably, the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sample circuit
Include: it is first silicon-controlled, second silicon-controlled, third is silicon-controlled and the 4th is silicon-controlled；
First silicon-controlled, third controllable silicon in serial connection, after second silicon-controlled, the 4th controllable silicon in serial connection with it is first silicon-controlled,
The series circuit of three silicon-controlled compositions forms series-parallel closed circuit, and one end of the contact of the gas density relay ontology is logical
It crosses route to be electrically connected with the route between described first is silicon-controlled, third is silicon-controlled, the other end can by route and described second
Control silicon, the 4th it is silicon-controlled between route electrical connection.
It is highly preferred that the described first silicon-controlled cathode is connected with intelligence control unit, the described first silicon-controlled anode with
The silicon-controlled cathode of the third is connected；The silicon-controlled control electrode of the described first silicon-controlled and described third and the intelligence control list
Member is connected；Described second silicon-controlled cathode is connected with intelligence control unit, the described second silicon-controlled anode and the described 4th
Silicon-controlled cathode is connected；The described second silicon-controlled and described 4th silicon-controlled control electrode is connected with the intelligence control unit
It connects.
Preferably, the gas density relay ontology includes but is not limited to the gas density relay of bimetallic strip compensation
Device, the gas density relay of gas compensation, bimetal leaf and gas compensation mixed type gas density relay；Complete mechanical
Gas density relay, numeric type gas density relay, machinery and digital mating type gas density relay；Band pointer
The gas density relay of display, digital display gas density relay, without the gas density switch of display or instruction；SF6 gas
Volume density relay, SF6 mixed gas density monitor, N2 gas density relay.
Preferably, the gas density detection sensor is arranged on the gas density relay ontology；Alternatively, described
Pressure regulating mechanism is arranged on the gas density relay ontology；Alternatively,
The gas density detection sensor, the on-line testing contact point signal sampling unit and intelligence control unit setting
On the gas density relay ontology.
It is highly preferred that the gas density relay ontology, the gas density detection sensor are integrated；Or
Person, the telemetering type gas density that the gas density relay ontology, the gas density detection sensor are integrated
Relay.
Preferably, the gas density detection sensor is integrated；Alternatively, the gas density detection sensor
The gas density transmitter being integrated.
It is highly preferred that the on-line testing contact point signal sampling unit, the intelligence control unit are arranged in the gas density
On transmitter.
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 the density detection sensor of quartz tuning-fork technology.
It is highly preferred that the pressure sensor is installed in the gas circuit of the gas density relay ontology.
It is highly preferred that the temperature sensor is installed in the gas circuit of the gas density relay ontology or outside gas circuit,
Or in the gas density relay ontology or the gas density relay sheet is external.
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 includes but is not limited to relative pressure sensor and/or absolute pressure sensor
Device.
Further, 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 temperature-compensating member of the gas density relay is arranged at least one described temperature sensor
Part is nearby or setting is on temperature compensating element, or is integrated in the temperature compensating element.Preferably, at least one institute
State the one end of pressure detector close to temperature compensating element that the gas density relay is arranged in temperature sensor；Wherein,
The pressure detector is Baden pipe or bellows, and the temperature compensating element is using temperature-compensating plate or the gas of shell inner sealing
Body.
Preferably, the on-line testing contact point signal sampling unit and the intelligence control unit are set together.
It is highly preferred that the on-line testing contact point signal sampling unit and the intelligence control unit are sealed in a cavity or shell
In vivo.
Preferably, the pressure regulating mechanism is sealed in a cavity or shell.
Preferably, when verification, the pressure regulating mechanism is a sealed gas chamber, and the outside or inside of the sealed gas chamber is set
There are heating element, and/or cooling module, by heating the heating element, and/or being freezed by the cooling module, causes
The temperature change of gas in the sealed gas chamber, and then complete 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, and the other end of the cavity is connected to institute
State the gas circuit of gas density relay ontology；There is piston in the cavity, one end of the piston is connected with an adjusting rod, institute
The outer end connection driving part of adjusting rod is stated, the other end of the piston protrudes into the opening, and the inner wall with the cavity
In sealing contact, the driving part drives the adjusting rod and then the piston is driven to move in the cavity.
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 cavity by electromagnetic force.
Preferably, the pressure regulating mechanism is the air bag that one end connects driving part, and the air bag is in the driving portion
The variation of generating body product, the air bag are connected to the gas density relay ontology under the driving of part.
Preferably, the pressure regulating mechanism is bellows, and one end of the bellows is connected to the gas density relay
Device ontology, 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.
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 one of press pump, booster pump, electric air pump, Electromagnetic air pump.
Preferably, the valve is motor-driven valve.
Preferably, the valve is solenoid valve.
It is highly preferred that the valve is permanent-magnet electromagnetic valve.
Preferably, the valve be piezo electric valve, or be temperature controlled valve, or for using intelligent memory material production, adopt
The new type of valve opened or closed with electric heating.
Preferably, the valve is hose bending or is pinched mode and realizes and turn off or on.
Preferably, the valve is sealed in a cavity or shell.
Preferably, the valve and the pressure regulating mechanism are sealed in a cavity or shell.
Preferably, the gas circuit two sides of the valve are respectively arranged with pressure sensor.
Preferably, the electrical equipment includes SF6 outlet openings equipment, SF6 mixed gas electrical equipment, environment-friendly type gas
Electrical equipment or other insulating gas electrical equipments.
Specifically, the electrical equipment includes GIS, GIL, PASS, breaker, current transformer, voltage transformer, transformation
Device, gas-filling cabinet, ring network cabinet.
Preferably, the valve is connected by electrical equipment jointing with the electrical equipment.
Preferably, contact point signal of the on-line testing contact point signal sampling unit to the gas density relay ontology
Sampling meets:
The on-line testing contact point signal sampling unit has independent at least two samplings contact, can be simultaneously at least two
A contact is automatically performed verification, and continuously measures, 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.
Preferably, contact point signal of the on-line testing contact point signal sampling unit to the gas density relay ontology
The test voltage of action value or its switching value is not less than 24V, i.e., in verification, applies between contact point signal respective terminal not low
In 24V voltage.
Preferably, the intelligence control unit obtains the gas density value of the gas density detection sensor acquisition；Alternatively, institute
Pressure value and temperature value that intelligence control unit obtains the gas density detection sensor acquisition are stated, the gas density relay is completed
The on-line monitoring of device.
Preferably, the intelligence control unit obtains the gas density relay ontology and contact point signal movement occurs or switches
When, the gas density detection sensor acquisition gas density value；Alternatively,
The intelligence control unit obtains gas density relay ontology when occurring contact point signal movement or switching, the gas
The pressure value and temperature value of volume density detection sensor acquisition, and become 20 DEG C corresponding according to gas pressure-temperature Characteristic conversion
Pressure value, i.e. gas density value completes the on-line testing of the gas density relay.
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, the corresponding density value of N number of different temperatures value collected in whole temperature ranges is carried out mean value calculation processing, is obtained
Its gas density value；Alternatively, setting time interval, setting pressure intervals step-length, whole pressure ranges in adopt
Collect the corresponding density value of obtained N number of different pressures value and carry out mean value calculation processing, obtains its gas density value；Wherein, N is
Positive integer more than or equal to 1.
Preferably, the gas density relay ontology is exported with density value output signal, the comparison density value is compared
Signal is connected with the intelligence control unit；Alternatively,
The gas density relay ontology is with comparison pressure value output signal, the comparison pressure value output signal and institute
Intelligence control unit is stated to be connected.
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 etc., industrial control mainboard, embedded main control board and control program, automatically control entire checking procedure, wrap
Containing all peripheral hardwares, logic and input and output.
Preferably, the intelligence control unit is equipped with electric interfaces, and the electric interfaces complete test data storage, and/or survey
Data export and/or test data printing are tried, and/or carries out data communication, and/or input analog quantity, digital quantity with host computer
Information.
It is highly preferred that the essential information of gas density relay (or monitoring device) the Support gas density monitor is defeated
Enter, the essential information includes but is not limited to factory number, required precision, nominal parameter, manufactory, one in running position
Kind is several.
Preferably, the intelligence control unit further includes the communication mould for realizing remote transmitting test data, and/or check results
Block.
It is highly preferred that the communication modes of the communication module are wire communication or wireless communication mode.
Further, the wire communication mode includes but is not limited to RS232 bus, RS485 bus, CAN-BUS total
One or more of line, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier, cable.
Further, the wireless communication mode include but is not limited to NB-IOT, 2G/3G/4G/5G, WIFI, bluetooth,
One or more of Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, quantum communications, sonar.
Preferably, clock is additionally provided on the intelligence control unit, the clock is configurable for that the gas is periodically arranged
The checking time or recording test time of density monitor.
Preferably, the control of the intelligence control unit is by field control, and/or passes through Background control.
It is highly preferred that on-line sampling check-up gas density electrical relay the setting according to the backstage with defencive function
It sets or instructs, complete the on-line testing of the gas density relay；Alternatively,
According to the checking time of the gas density relay of setting, the online school of the gas density relay is completed
It tests.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes multiple-pass joint, institute
Gas density relay ontology, the valve, the pressure regulating mechanism is stated to be arranged on the multiple-pass joint.
It is highly preferred that the gas circuit of the gas density relay ontology, connects the first connector of the multiple-pass joint；
The gas circuit of the pressure regulating mechanism, connects the second connector of the multiple-pass joint, first connector with it is described
Second fittings, so that the gas circuit of the pressure regulating mechanism is connected to the gas density relay ontology；The valve
The other end and the multiple-pass joint third fittings, the third connector and first fittings, thus by institute
The other end for stating valve is connected to the pressure regulating mechanism, and/or the gas density relay ontology.
Preferably, the gas density relay ontology, the valve, the pressure regulating mechanism are connected to by connecting tube
Together.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes Self-sealing valve, described
Self-sealing valve is installed between the electrical equipment and the valve；Alternatively, the valve be installed on the electrical equipment with it is described self-styled
Between valve.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes tonifying Qi interface.
It is highly preferred that the tonifying Qi interface is arranged on the pressure regulating mechanism；Alternatively, the tonifying Qi interface setting exists
On the electrical equipment；Alternatively, the tonifying Qi interface is arranged on the multiple-pass joint；Alternatively, the tonifying Qi interface setting exists
On the Self-sealing valve.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes: be used for man-machine friendship
Mutual display interface is connected with the intelligence control unit, the current verification data of real-time display, or/and supports data input.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes: micro- water sensing
Device, micro- water sensor are connected with the gas density relay ontology and the intelligence control unit respectively.
It is highly preferred that the on-line sampling check-up gas density electrical relay with defencive function, further includes: gas circulation
Mechanism, the gas circulation mechanism are connected with the gas density relay ontology and the intelligence control unit respectively, the gas
Body circulation mechanism includes capillary, sealed chamber and heating element.
Further, micro- water sensor can be installed on the sealed chamber of the gas circulation mechanism, in capillary,
Capillary exit, extracapillary.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes: decomposition product sensing
Device, the decomposition product sensor are connected with the gas density relay ontology and the intelligence control unit respectively.
Preferably, the on-line sampling check-up gas density electrical relay with defencive function, further includes for monitoring
Camera.
Preferably, the gas density relay ontology further includes contact resistance detection unit, the contact resistance detection
Unit is connected with contact point signal or is directly connected with the intrinsic signal generator of the gas density relay；Online
Under the control for verifying contact point signal sampling unit, the contact point signal of gas density relay ontology is isolated with its control loop, In
When the contact point signal of gas density relay ontology acts, and/or when being connected to the instruction of detection contact contact resistance, connect
Touching resistance detection unit is able to detect that the contact contact resistance value of gas density relay ontology.
A kind of method of calibration of gas density relay is provided in terms of the application third, comprising:
When normal operating conditions, gas density relay monitors the gas density value in electrical equipment；
Gas density relay is allowing verification gas close according to the checking time and gas density value situation of setting
It spends under the situation of relay:
Valve is closed by intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that gas density relay is sent out
Raw contact movement, contact movement are transmitted to intelligence control unit by on-line testing contact point signal sampling unit, and intelligence control unit is according to connecing
Pressure value, temperature value when point movement obtain gas density value, or directly obtain gas density value, detect gas density relay
The contact point signal action value of device completes the verifying work of the contact point signal action value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opening valve.
Preferably, a kind of method of calibration of gas density relay, comprising:
When normal operating conditions, gas density relay monitors the gas density value in electrical equipment, while gas density
Relay monitors the gas density value in electrical equipment on-line by gas density detection sensor and intelligence control unit；
Gas density relay is allowing verification gas close according to the checking time and gas density value situation of setting
It spends under the situation of relay:
Valve is closed by intelligence control unit；
On-line testing contact point signal sampling unit is adjusted to verification state by intelligence control unit, under verification state, In
Line verifies the contact point signal control loop of contact point signal sampling unit cutting gas density relay, by gas density relay sheet
The contact of body is connected to intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that gas density relay is sent out
Raw contact movement, contact movement are transmitted to intelligence control unit by on-line testing contact point signal sampling unit, and intelligence control unit is according to connecing
Pressure value, temperature value when point movement obtain gas density value, or directly obtain gas density value, detect gas density relay
The contact point signal action value of device completes the verifying work of the contact point signal action value of gas density relay；
By intelligence control unit driving pressure regulating mechanism, slowly increase gas pressure, so that gas density relay is sent out
Raw contact resets, and contact, which is resetted, is transmitted to intelligence control unit by on-line testing contact point signal sampling 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 gas density relay
The contact point signal return value of device completes the verifying work of the contact point signal return value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opening valve, and on-line testing contact point signal is adopted
Sample unit is adjusted to working condition, and the contact point signal control loop of gas density relay is resumed operation normal operating conditions.
Preferably, the contact point signal includes alarm, and/or locking.
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 the density detection sensor of quartz tuning-fork technology.
Preferably, after the gas density relay completes verification, if any exception, alarm can be issued automatically, and upload
To distal end or it is sent on specified receiver.
Preferably, the method for calibration further include: scene shows gas density value and check results on the spot, or passes through backstage
Show gas density value and check results.
Preferably, the method for calibration further include: the control of the intelligence control unit is by field control, and/or after passing through
Platform control.
Compared with prior art, technical solution of the present invention has the advantages that
The application provides a kind of on-line sampling check-up gas density electrical relay with defencive function, sets for high-voltage electrical apparatus
It is standby, including gas density relay ontology, gas density detection sensor, pressure regulating mechanism, valve, on-line testing contact point signal
Sampling unit and intelligence control unit.The on-line testing contact point signal sampling unit, in non-verification state, with gas density relay
The contact point signal of device ontology is relatively isolated on circuit；In the state of verification, contact point signal control loop is cut off, it is ensured that gas
The contact action signal of volume density relay ontology will not upload, and will not influence the safe operation of power grid, while by the gas
The contact of density monitor ontology is connected with the intelligence control unit, carries out to the state of the contact of gas density relay ontology
Monitoring, it is ensured that safety of the intelligence control unit in verification.The entire checking procedure of the technology of the present invention realizes the zero-emission of SF6 gas simultaneously
, meet regulations requirement.
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 a kind of control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 2 is another control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 3 is another control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 4 is another control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 5 is another control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 6 is another control circuit schematic diagram of the preferred embodiment of the present invention；
Fig. 7 is another control circuit schematic diagram of the preferred embodiment of the present invention.
Marginal data:
1, gas density relay ontology；2, pressure sensor；3, temperature sensor；4, valve；5, pressure regulating mechanism；6,
On-line testing contact point signal sampling unit；7, intelligence control unit；71, processor；72, power supply；73, communication module；74, intelligence control unit
Protect circuit；75, it shows and exports；76, data store.
Specific embodiment
The present invention provides a kind of on-line sampling check-up gas density electrical relay and its method of calibration with defencive function, is
Keep the purpose of the present invention, technical solution and effect clearer, clear, referring to the drawings and gives an actual example further to the present invention
It is described in detail.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:
Fig. 1 is that the on-line sampling with defencive function of the high voltage electric equipment of the embodiment of the present invention one verifies gas density
A kind of control circuit schematic diagram of relay.
As shown in Figure 1, a kind of on-line sampling check-up gas density electrical relay with defencive function, comprising: gas density
Relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, the sampling of on-line testing contact point signal are single
Member 6 and intelligence control unit 7.One end of the valve 4 is equipped with the interface that is connected with electrical equipment, the other end of the valve 4 with it is described
Gas density relay ontology 1 is connected；The gas circuit of the pressure regulating mechanism 5, with 1 phase of gas density relay ontology
Connection；The pressure regulating mechanism 5 is configured as adjusting the pressure lifting of the gas density relay ontology 1, makes the gas
Contact point signal movement occurs for volume density relay ontology 1；The on-line testing contact point signal sampling unit 6 respectively with gas density
Relay ontology 1 is connected with the intelligence control unit 7；The intelligence control unit 7, also respectively with the pressure sensor 2, the temperature
Degree sensor 3, the pressure regulating mechanism 5, the valve 4 are connected with the on-line testing contact point signal sampling unit 6, are matched
It is set to and controls turning off or on for the valve 4, complete the control of the pressure regulating mechanism 5, pressure value acquisition and temperature value are adopted
Collection, and/or the acquisition of gas density value, and detect the contact point signal action value of the gas density relay ontology 1 and/or connect
Point signal return value.Wherein, the contact point signal includes alarm, and/or locking.
The on-line testing contact point signal sampling unit 6 is equipped with protection circuit, and the protection circuit includes the first relay
J1 and the second relay J2.The first relay J1 is equipped with normally closed contact J11 and J12, the normally closed contact J11 and J12 string
It is associated in the contact point signal control loop；The second relay J2 is equipped with normal opened contact J21 and J22, the normal opened contact
J21 and J22 is connected to the contact P of the gas density relay ontology 1JOn；It is also possible that the first relay J1 and the second relay
Device J2 is integrated, as with the relay of normally-open normally-close contact.Under non-verification state, contact PJFor open type density after
Electric appliance, the normally closed contact J11 and J12 closure, the normal opened contact J21 and J22 are disconnected, and the gas density relay is real-time
Monitor the contact PJOutput state；Under verification state, the normally closed contact J11 and J12 are disconnected, the normal opened contact
J21 and J22 closure, the contact P of the gas density relay ontology 1JPass through the normal opened contact J21 and J22 and the intelligence
Control unit 7 is connected.
The intelligence control unit 7 is mainly made of processor 71 (U1), power supply 72 (U2).Processor 71 (U1) can be logical
With computer, industrial personal computer, CPU, single-chip microcontroller, ARM chip, AI chip, MCU, FPGA, PLC etc., industrial control mainboard, embedded master control
Plate etc. and other intelligent integrated circuits.Power supply 72 (U2) can be Switching Power Supply, alternating current 220V, DC power supply, LDO, can compile
Journey power supply, solar energy, battery, rechargeable battery, battery etc..
In addition, the pressure sensor 2 of pressure acquisition P may is that the various pressure-sensitive members such as pressure sensor, pressure transmitter
Part.The temperature sensor 3 of temperature acquisition T may is that the various temperature-sensing elements such as temperature sensor, temperature transmitter.Valve 4 can be with
Be: 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 control stream
The element of amount.It is automanual to can also be hand-operated valve.Pressure regulating mechanism 5 may is that motorized adjustment piston, motorized adjustment cylinder,
Booster pump, gas cylinder pressurization and valve, solenoid valve, flow controller etc..It is automanual to can also be the pressure tune manually adjusted
Save mechanism.
Working principle:
Intelligence control unit 7 monitors the gas pressure P and temperature T of electrical equipment according to pressure sensor 2, temperature sensor 3,
Obtain corresponding 20 DEG C of pressure value Ps20(i.e. gas density value).When needing check-up gas density electrical relay ontology 1, at this time if
Gas density value P20The safety check density value P of >=settingS, intelligence control unit 7 controls the closing of the valve 4, so that gas density
Relay ontology 1 separates in gas circuit with electrical equipment.
Then, the control of intelligence control unit 7 disconnects the contact point signal control loop of gas density relay ontology 1, i.e., online school
The normally closed contact J11 and J12 for testing the first relay J1 of contact point signal sampling unit 6 are disconnected, so that on-line testing gas density
It will not influence the safe operation of electrical equipment when relay ontology 1, will not accidentally send out alarm signal, or locking control in verification
Circuit processed.Because having carried out gas density value P before starting verification20The 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, when verification is peace
Complete.Meanwhile the contact sample circuit of the contact of gas density relay ontology 1, i.e. on-line testing are connected to by intelligence control unit 7
The normal opened contact J21 and J22 of second relay J2 of contact point signal sampling unit 6 is closed, at this time gas density relay ontology 1
Contact PJJust it is connected by the normal opened contact J21 and J22 of the second 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 adjust pressure regulating mechanism 5 and volume change occurs, make gas density relay
The pressure of the gas of ontology 1 gradually declines, so that contact point signal movement, contact point signal occur for gas density relay ontology 1
Movement uploads to intelligence control unit 7,7 basis of intelligence control unit by the second relay J2 of on-line testing contact point signal sampling unit 6
The pressure value P and temperature T value that contact point signal measures when acting, pressure value when becoming 20 DEG C corresponding by weight of gas characteristic
P20 (density value), so that it may detect the contact action value P of gas density relayD20.To gas density relay ontology 1
After the contact point signal action value of alarm and/or block signal all detected, then pressure is controlled by intelligence control unit 7 and adjusts machine
The motor (motor or variable-frequency motor) of structure 5 adjusts pressure regulating mechanism 5, makes the pressure of the gas of gas density relay ontology 1
Power gradually rises, the return value of the alarm of test to gas density relay ontology 1 and/locking contact point signal.School repeatedly
Multiple (such as 2~3 times) are tested, then calculate its average value, this completes the verifying works of gas density relay.
After the completion of verification, the normal opened contact J21 and J22 of the second relay J2 of on-line testing contact point signal sampling unit 6
It disconnects, at this time the contact P of gas density relay ontology 1JJust pass through the contact normally opened J21 and J22 of the second relay J2 of disconnection
It is not connected with intelligence control unit 7.7 control valve 4 of intelligence control unit open so that gas density relay ontology 1 in gas circuit with electricity
Gas equipment is connected.Then, the normally closed contact J11 and J12 of the first relay J1 of on-line testing contact point signal sampling unit 6 is closed
It closes, the contact point signal control loop of gas density relay ontology 1 works normally, and gas density relay security monitoring is electrically set
Standby gas density, makes electrical equipment securely and reliably work.Thus facilitate the on-line testing work for completing gas density relay
Make, while will not influence the safe operation of electrical equipment.
Embodiment two:
As shown in Fig. 2, the on-line testing contact point signal sampling unit 6 is equipped with contact sample circuit.In the present embodiment, institute
Stating contact sample circuit includes photoelectrical coupler OC1 and a resistance R1, the photoelectrical coupler OC1 include a light emitting diode and
One phototriode；The contact P of the anode of the light emitting diode and the gas density relay ontology 1JSeries connection is formed and is closed
Close circuit；The emitter of the phototriode is grounded；The collector of the photosensitive triode is as on-line testing contact point signal
The output end out6 connection intelligence control unit 7 of sampling unit 6, the collector of the phototriode also pass through the resistance R1
It is controlled to a power supply.
By above-mentioned contact sample circuit, the contact P for knowing gas density relay ontology 1 can be convenientJIt is to disconnect also
It is the state of closure.Specifically, as the contact PJWhen closure, closed circuit is powered, the lumination of light emitting diode, and light is by institute
Phototriode conducting is stated, the collector of the phototriode exports low level；As the contact PJWhen disconnection, closed circuit
It is disconnected, the light emitting diode does not shine, the phototriode cut-off, the high electricity of collector output of the phototriode
It is flat.In this way, the output end out6 by on-line testing contact point signal sampling unit 6 exports low and high level.
Intelligence control unit 7 is isolated with contact point signal control loop by the method for Phototube Coupling in the present embodiment, is verifying
Contact P is closed in journeyJ, or contact P in the case where gas leakage occursJAlso it can close, at this point, detecting phototriode
Collector output low level.It controls and closes contact P in checking procedureJTime in a preset length, thus non-leak
In the case of, contact P in checking procedureJThe length of closed state duration is low level that is determining, being received by monitoring
Duration, generation contact P can be judged whether it is in checking procedureJIt closes.Therefore, when can pass through record in verification
Between, alarm signal when judge the sending of gas density relay ontology 1 is verification, rather than alarm signal when gas leakage.
In the present embodiment, intelligence control unit 7 is mainly made of processor 71 (U1), power supply 72 (U2).
Embodiment three:
As shown in figure 3, the on-line testing contact point signal sampling unit 6 is equipped with contact sample circuit, in the present embodiment, institute
Stating contact sample circuit includes the first photoelectrical coupler OC1 and the second photoelectrical coupler OC2.
The light emitting diode of the light emitting diode of the first photoelectrical coupler OC1 and the second photoelectrical coupler OC2
Respectively by current-limiting resistance parallel connection, connect to form closed circuit with the contact of the gas density relay ontology after in parallel, and
The connection of the light emitting diode of the first photoelectrical coupler OC1 and the second photoelectrical coupler OC2 is contrary；Described
The current collection of the phototriode of the collector of the phototriode of one photoelectrical coupler OC1 and the second photoelectrical coupler OC2
Extremely be controlled to a power supply by divider resistance, the emitter of the phototriode of the first photoelectrical coupler OC1 with it is described
The emitter of the phototriode of second photoelectrical coupler OC2 connects to form output end out6, output end out6 and the intelligence
Control unit 7 is connected, and is grounded by a resistance R5.
By above-mentioned contact sample circuit, the contact P for knowing gas density relay ontology 1 can be convenientJIt is to disconnect also
It is the state of closure.Specifically, as the contact PJWhen closure, closed circuit is powered, and the first photoelectrical coupler OC1 is led
Logical, the second photoelectrical coupler OC2 cut-off, the emitter of the phototriode of the first photoelectrical coupler OC1 (exports
Hold out6) output high level；Alternatively, the first photoelectrical coupler OC1 cut-off, the second photoelectrical coupler OC2 conducting, institute
State emitter (i.e. output end out6) the output high level of the phototriode of the second photoelectrical coupler OC2.As the contact PJ
When disconnection, closed circuit is powered down, and the first photoelectrical coupler OC1, the second photoelectrical coupler OC2 are turned off, described
The emitter (i.e. output end out6) of the phototriode of first photoelectrical coupler OC1 and the second photoelectrical coupler OC2 is defeated
Low level out.
In an advantageous embodiment, the 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.
In the present embodiment, the first zener diode group includes concatenated first zener diode D1 and the second pressure stabilizing two
Pole pipe D2, the cathode of the first zener diode D1 connect the anode of the second zener diode D2；Second pressure stabilizing
Diode group includes concatenated third zener diode D3 and the 4th zener diode D4, and the third zener diode D3 is just
Pole connects the cathode of the 4th zener diode D4.
Contact sample circuit can be convenient the contact P realized to gas density relay ontology 1JState be monitored,
In conjunction with intelligence control unit 7, by contact PJIt is that off-state or closed state carry out respective handling, and implement teletransmission, from from the background
Know contact point signal state, substantially increases the reliability of power grid.
In the present embodiment, intelligence control unit 7 is mainly made of processor 71 (U1), power supply 72 (U2).
Example IV:
As shown in figure 4, the present embodiment and the difference of embodiment three are: intelligence control unit 7 is mainly by processor 71 (U1), electricity
Source 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 five:
As shown in figure 5, the on-line testing contact point signal sampling unit 6 is equipped with contact sample circuit, in the present embodiment, institute
Stating contact sample circuit includes the first Hall current sensor H1 and the second Hall current sensor H2, first Hall current
The contact P of sensor H1, the second Hall current sensor H2 and the gas density relay ontologyJSeries connection forms closure
Circuit, and the contact P of the gas density relay ontology 1JIt is connected to the first Hall current sensor H1 and described
Between two Hall current sensor H2；The output end and second Hall current of the first Hall current sensor H1 senses
The output end of device H2 is connected with the intelligence control unit 7.
By above-mentioned contact sample circuit, the contact P for knowing gas density relay ontology 1 can be convenientJIt is to disconnect also
It is the state of closure.Specifically, as the contact PJWhen closure, closed circuit is powered, the first Hall current sensor H1
Electric current is flowed through between the second Hall current sensor H2, generates induced potential；As the contact PJWhen disconnection, it is closed back
Road is powered down, and no current flows through between the first Hall current sensor H1 and the second Hall current sensor H2, is produced
Raw induced potential is zero.
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 six:
As shown in fig. 6, the on-line testing contact point signal sampling unit 6 is equipped with contact sample circuit, in the present embodiment, institute
Stating contact sample circuit includes: that the first controllable silicon SCR 1, the second controllable silicon SCR 2, third controllable silicon SCR 3 and the 4th are silicon-controlled
SCR4。
First controllable silicon SCR 1 and third controllable silicon SCR 3 are connected, the second controllable silicon SCR 2 and the series connection of the 4th controllable silicon SCR 4
The series circuit constituted afterwards with the first controllable silicon SCR 1, third controllable silicon SCR 3 forms series-parallel closed circuit；The gas is close
Spend the contact P of relay ontology 1JOne end pass through between route and first controllable silicon SCR 1, third controllable silicon SCR 3
Route electrical connection, the other end are electrically connected by the route between route and second controllable silicon SCR 2, the 4th controllable silicon SCR 4.
Described here is series-parallel as shown in fig. 6, being the circuit of above-mentioned component Hybrid connections parallel with one another, concatenated.
Specifically, the cathode of the first controllable silicon SCR 1 and the cathode of the second controllable silicon SCR 2 connect to form the on-line testing
The output end of contact point signal sampling unit 6 is connected with intelligence control unit 7；The anode and third of first controllable silicon SCR 1 are silicon-controlled
The cathode of SCR3 is connected；The anode of second controllable silicon SCR 2 is connected with the cathode of the 4th controllable silicon SCR 4；Third is silicon-controlled
The anode of SCR3 and the anode of the 4th controllable silicon SCR 4 are connected with the input terminal of the on-line testing contact point signal sampling unit 6
It connects.Wherein, the first controllable silicon SCR 1, the second controllable silicon SCR 2, the control electrode of third controllable silicon SCR 3 and the 4th controllable silicon SCR 4
It 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 PJIt disconnects, contact sample circuit triggers third controllable silicon SCR 3
With the 4th controllable silicon SCR 4, third controllable silicon SCR 3 and the 4th controllable silicon SCR 4 are in the conductive state, contact point signal control loop
It is in running order.And contact sample circuit does not trigger the first controllable silicon SCR 1 and the second controllable silicon SCR 2 at this time, first is controllable
The cathode Non voltage output of silicon SCR1 and the second controllable silicon SCR 2 are in obstructed state.
When being verified, contact sample circuit does not trigger third controllable silicon SCR 3 and the 4th controllable silicon SCR 4, and triggers
First controllable silicon SCR 1 and the second controllable silicon SCR 2.At this point, third controllable silicon SCR 3, the 4th controllable silicon SCR 4 are off shape
State, contact PJSeparate with contact point signal control loop.And the first controllable silicon SCR 1, the second controllable silicon SCR 2 are in the conductive state,
The contact PJIt is connected to the on-line testing contact point signal sampling unit 6, is connected with intelligence control unit 7.
On-line testing contact point signal sampling unit 6 can also be by solid-state relay or electromagnetic relay and silicon-controlled mixing spirit
Composition living.
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 seven:
As shown in fig. 7, the difference between this embodiment and the first embodiment lies in: it is increased between normally closed contact J11 and J12 often
Open contact J13.Under non-verification state, contact PJFor closed type density monitor, the normally closed contact J11 and J12 closure, and
J13 is disconnected, and the normal opened contact J21 and J22 are disconnected；Under verification state, the on-line testing contact point signal sampling unit
J13 is closed the contact point signal control loop, and normally closed contact J11 and J12 are disconnected, i.e. cutting gas density relay ontology 1
Contact PJWith the connection of contact point signal control loop, and normal opened contact J21 and J22 be closed, be connected to it is described second connection circuit,
By the contact P of the gas density relay ontology 1JIt is connected with the intelligence control unit 7.
On-line sampling check-up gas density electrical relay with defencive function, in high temperature, low temperature, room temperature, 20 DEG C of environment temperature
Degree verification density monitor contact when, to its error determine require can be it is different, specifically can according to the requirement of temperature,
Implement according to relevant criterion；Can be according to density monitor at different temperature, the different periods carries out its error performance
Comparison.That is different times, the comparison in same temperature ranges stated, the performance for density monitor of decisioing making.It is each with history
Comparison, history and the present comparison in period.It can also check UP to density monitor ontology.It when necessary, can be right at any time
Density monitor contact point signal is verified；Density value with gas density relay ontology, the electrical equipment that is monitored
Whether judgement is normally carried out.Can density value to electrical equipment itself, gas density relay ontology, pressure sensor,
Temperature sensor carries out normal and abnormal judgement and analysis, compares, and then realizes to the monitoring of electrical equipment gas density, density
The states such as relay ontology are determined, are compared, are analyzed；Also the contact point signal state of gas density relay is monitored,
And its state is implemented teletransmission.Can be in the contact point signal state for being known that gas density relay from the background: disconnection be still closed
It closes, so that more one layer of monitoring, improves reliability；Inspection can also be can be carried out to the temperature compensating of gas density relay ontology
It surveys, or detection and judgement；Can also the contact contact resistance to gas density relay ontology detect, or detection and sentence
It is fixed；Also the insulation performance of gas density relay ontology is detected, or detection and judgement.
A kind of on-line sampling check-up gas density electrical relay and its method of calibration with defencive function of the present invention
Involved in gas density relay also refer to its constituent element and design into a single integrated structure gas density relay,
The gas density relay that its constituent element is designed to separate structure is also referred to, gas density monitoring is generally referred to as
Device.
In conclusion a kind of on-line sampling check-up gas density electrical relay with defencive function provided by the present application, is used
In high voltage electric equipment, including it is gas density relay ontology, gas density detection sensor, pressure regulating mechanism, valve, online
Verify contact point signal sampling unit and intelligence control unit.The on-line testing contact point signal sampling unit is equipped with protection circuit, non-
When verification state, it is ensured that the contact point signal of the on-line testing contact point signal sampling unit and gas density relay ontology is in electricity
Road is relatively isolated；In the state of verification, the on-line testing contact point signal sampling unit can cut off contact point signal control
Circuit processed, it is ensured that the contact action signal of gas density relay ontology will not upload, and will not influence the safe operation of power grid, together
When the contact of the gas density relay ontology is connected by contact sample circuit with the intelligence control unit, it is close to gas
The state for spending the contact of relay ontology is monitored, it is ensured that safety of the intelligence control unit in verification.
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 (22)
1. the on-line sampling check-up gas density electrical relay with defencive function characterized by comprising gas density relay
Ontology, gas density detection sensor, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit and intelligence control unit；
The gas circuit of the pressure regulating mechanism is connected with the gas circuit of the gas density relay ontology；The pressure is adjusted
Mechanism is configured as adjusting the pressure lifting of the gas density relay ontology, and the gas density relay ontology occurs
Contact point signal movement；
The gas density detection sensor is connected to the gas density relay ontology；
One end of the valve is equipped with the interface being connected with electrical equipment, the other end of the valve and the gas density relay
The gas circuit of ontology is connected；
The on-line testing contact point signal sampling unit, including the first connection circuit and the second connection circuit, first connection
The contact of gas density relay ontology described in circuit connection and contact point signal control loop, second connection circuit connection institute
State the contact and the intelligence control unit of gas density relay ontology；Under non-verification state, contact is open type density relay
Device, the second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing
Contact point signal sampling unit cutting the first connection circuit, is connected to the second connection circuit, by the gas density relay
The contact of device ontology is connected with the intelligence control unit；Alternatively, contact is closed type density monitor under non-verification state,
The second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing contact
Signal sampling unit is closed the contact point signal control loop, cuts off contact and the contact point signal control of gas density relay ontology
The connection in circuit processed is connected to the second connection circuit, by the contact of the gas density relay ontology and the intelligence control list
Member is connected；
The intelligence control unit, respectively with the gas density detection sensor, the pressure regulating mechanism, the valve and it is described
Line verification contact point signal sampling unit is connected, and is configured as controlling turning off or on for the valve, completes the pressure and adjusts
The control of mechanism, pressure value acquisition and temperature value acquisition, and/or the acquisition of gas density value, and the detection gas density after
The contact point signal action value and/or contact point signal return value of electric appliance ontology；
Wherein, the contact point signal includes alarm, and/or locking.
2. a kind of gas density detecting device with defencive function characterized by comprising gas density relay ontology,
Gas density detection sensor, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit and intelligence control unit；
The gas circuit of the pressure regulating mechanism is connected with the gas circuit of the gas density relay ontology；The pressure is adjusted
Mechanism is configured as adjusting the pressure lifting of the gas density relay ontology, and the gas density relay ontology occurs
Contact point signal movement；
The gas density detection sensor is connected to the gas density relay ontology；
One end of the valve is equipped with the interface being connected with electrical equipment, the other end of the valve and the gas density relay
The gas circuit of ontology is connected；
The on-line testing contact point signal sampling unit, including the first connection circuit and the second connection circuit, first connection
The contact of gas density relay ontology described in circuit connection and contact point signal control loop, second connection circuit connection institute
State the contact and the intelligence control unit of gas density relay ontology；Under non-verification state, contact is open type density relay
Device, the second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing
Contact point signal sampling unit cutting the first connection circuit, is connected to the second connection circuit, by the gas density relay
The contact of device ontology is connected with the intelligence control unit；Alternatively, contact is closed type density monitor under non-verification state,
The second connection circuit disconnects or isolation, the first connection closing of circuit；Under verification state, the on-line testing contact
Signal sampling unit is closed the contact point signal control loop, cuts off contact and the contact point signal control of gas density relay ontology
The connection in circuit processed is connected to the second connection circuit, by the contact of the gas density relay ontology and the intelligence control list
Member is connected；
The intelligence control unit, respectively with the gas density detection sensor, the pressure regulating mechanism, the valve and it is described
Line verification contact point signal sampling unit is connected, and is configured as controlling turning off or on for the valve, completes the pressure and adjusts
The control of mechanism, pressure value acquisition and temperature value acquisition, and/or the acquisition of gas density value, and the detection gas density after
The contact point signal action value and/or contact point signal return value of electric appliance ontology；
Wherein, the contact point signal includes alarm, and/or locking.
3. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: it is described first connection circuit include the first relay, it is described second connection circuit include second after
Electric appliance, first relay are equipped at least one normally closed contact, and second relay is equipped at least one normal opened contact, institute
It states normally closed contact and the normal opened contact keeps opposite switch state；The normally closed contact is connected on the contact point signal control
In circuit, the normal opened contact is connected on the contact of the gas density relay ontology；
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 ontology is connected by the normal opened contact with the intelligence control unit.
4. on-line sampling check-up gas density electrical relay according to claim 3 or gas density detecting device, feature
Be: first relay and second relay can be two independent relays, be also possible to the same relay
Device.
5. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sampling
Circuit includes photoelectrical coupler and a resistance, and the photoelectrical coupler includes a light emitting diode and a phototriode；It is described
The contact of light emitting diode and the gas density relay ontology connects to form closed circuit；The transmitting of the phototriode
Pole ground connection；The collector of the photosensitive triode connects the intelligence control unit, and the collector of the phototriode also passes through institute
Resistance is stated to be controlled to a power supply；
When the junction closure, closed circuit is powered, and the phototriode is connected the lumination of light emitting diode, light,
The collector of the phototriode exports low level；
When the contact disconnects, closed circuit is disconnected, and the light emitting diode does not shine, the phototriode cut-off,
The collector of the phototriode exports high level.
6. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sampling
Circuit includes the first photoelectrical coupler and the second photoelectrical coupler；
The light emitting diode of the light emitting diode of first photoelectrical coupler and second photoelectrical coupler passes through limit respectively
Leakage resistance is in parallel, connects to form closed circuit with the contact of the gas density relay ontology after in parallel, and first light
The connection of the light emitting diode of electric coupler and second photoelectrical coupler is contrary；
The phototriode of the collector of the phototriode of first photoelectrical coupler and second photoelectrical coupler
Collector is controlled to a power supply by divider resistance, the emitter of the phototriode of first photoelectrical coupler with it is described
The emitter of the phototriode of second photoelectrical coupler connects to form output end, which is connected with the intelligence control unit
It connects, and passes through a resistance eutral grounding；
When the junction closure, closed circuit is powered, and the first photoelectrical coupler conducting, second photoelectrical coupler is cut
Only, the emitter of the phototriode of first photoelectrical coupler exports high level；Alternatively, first photoelectrical coupler is cut
Only, the second photoelectrical coupler conducting, the emitter of the phototriode of second photoelectrical coupler export high level；
When the contact disconnects, closed circuit is powered down, and first photoelectrical coupler, second photoelectrical coupler are cut
Only, the emitter of the phototriode of first photoelectrical coupler and second photoelectrical coupler exports low level.
7. on-line sampling check-up gas density electrical relay according to claim 6 or gas density detecting device, feature
Be: the contact sample circuit further includes the first zener diode group and the second zener diode group, first pressure stabilizing two
Pole pipe group and the second zener diode group are connected in parallel in the contact point signal control loop, and first zener diode
Group is contrary with the connection of the second zener diode group；The first zener diode group and two pole of the second pressure stabilizing
Pipe group by one, two or more zener diode it is in series.
8. on-line sampling check-up gas density electrical relay according to claim 7 or gas density detecting device, feature
Be: the first zener diode group includes concatenated first zener diode and the second zener diode, and described first is steady
The cathode of pressure diode connects the anode of second zener diode；The second zener diode group includes concatenated third
Zener diode and the 4th zener diode, the anode of the third zener diode connect the negative of the 4th zener diode
Pole.
9. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sampling
Circuit includes the first Hall current sensor and the second Hall current sensor, first Hall current sensor, described the
The contact of two Hall current sensors and the gas density relay ontology connects to form closed circuit, and the gas density
The contact of relay ontology is connected between first Hall current sensor and second Hall current sensor；It is described
The output end of the output end of first Hall current sensor and second Hall current sensor with the intelligence control unit phase
Connection；
When the junction closure, closed circuit is powered, and first Hall current sensor and second Hall current pass
Electric current is flowed through between sensor, generates induced potential；
When the contact disconnects, closed circuit is powered down, first Hall current sensor and second Hall current
No current flows through between sensor, and the induced potential of generation is zero.
10. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the on-line testing contact point signal sampling unit is equipped with contact sample circuit, the contact sampling
Circuit include: it is first silicon-controlled, second silicon-controlled, third is silicon-controlled and the 4th is silicon-controlled；
First silicon-controlled, third controllable silicon in serial connection, can with first silicon-controlled, third after second silicon-controlled, the 4th controllable silicon in serial connection
The series circuit that control silicon is constituted forms series-parallel closed circuit, and one end of the contact of the gas density relay ontology passes through line
Road is electrically connected with the route between described first is silicon-controlled, third is silicon-controlled, the other end by route with it is described second silicon-controlled,
4th it is silicon-controlled between route electrical connection.
11. on-line sampling check-up gas density electrical relay according to claim 10 or gas density detecting device, special
Sign is: the described first silicon-controlled cathode is connected with intelligence control unit, and the described first silicon-controlled anode and the third can
The cathode of control silicon is connected；The silicon-controlled control electrode of the described first silicon-controlled and described third is connected with the intelligence control unit；
Described second silicon-controlled cathode is connected with intelligence control unit, the described second silicon-controlled anode and the 4th silicon-controlled yin
Pole is connected；The described second silicon-controlled and described 4th silicon-controlled control electrode is connected with the intelligence control unit.
12. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the gas density detection sensor is arranged on the gas density relay ontology；Or
Person,
The pressure regulating mechanism is arranged on the gas density relay ontology；Alternatively,
The gas density detection sensor, the on-line testing contact point signal sampling unit and the intelligence control unit are arranged in institute
It states on gas density relay ontology.
13. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the gas density detection sensor includes at least one pressure sensor and at least one temperature
Spend sensor；Alternatively,
Using the gas density transmitter being made of pressure sensor and temperature sensor；Alternatively,
Using the density detection sensor of quartz tuning-fork technology.
14. on-line sampling check-up gas density electrical relay according to claim 13 or gas density detecting device, special
Sign is: the pressure sensor is installed in the gas circuit of the gas density relay ontology；The temperature sensor installation
In in the gas circuit of the gas density relay ontology or outside gas circuit or in the gas density relay ontology or the gas
Volume density relay sheet is external.
15. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: when verification, the pressure regulating mechanism be a sealed gas chamber, the outside of the sealed gas chamber or
Inside is equipped with heating element, and/or cooling module, by heating the heating element, and/or passing through the cooling module system
It is cold, lead to the temperature change of the gas in the sealed gas chamber, and then complete the pressure lifting of the gas density relay；Or
Person,
The pressure regulating mechanism is cavity open at one end, and the other end of the cavity is connected to the gas density relay sheet
The gas circuit of body；There is piston in the cavity, one end of the piston is connected with an adjusting rod, the outer end connection of the adjusting rod
Driving part, the other end of the piston protrude into the opening, and in sealing contact with the inner wall of the cavity, the driving portion
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 cavity；Alternatively,
The pressure regulating mechanism is the air bag that one end connects driving part, and the air bag is issued in the driving of the driving part
Raw volume change, the air bag are connected to the gas density relay ontology；Alternatively,
The pressure regulating mechanism is bellows, and one end of the bellows is connected to the gas density relay ontology, described
The other end of bellows stretches under the driving of driving part；Alternatively,
The pressure regulating mechanism is a vent valve, the vent valve be solenoid valve or motor-driven valve or it is other by electricity or gas
The vent valve realized of mode；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, Electromagnetic air pump
One of；
Wherein, the driving part includes but is not limited to magnetic force, motor, reciprocating mechanism, Carnot cycle mechanism, pneumatic member
One of part.
16. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the valve is motor-driven valve, and/or solenoid valve, or is piezo electric valve, or is temperature controlled valve, or
For new type of valve being made of intelligent memory material, being opened or closed using electric heating.
17. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the intelligence control unit further includes realizing remote transmitting test data, and/or check results
Communication module, the communication modes of the communication module are wire communication or wireless communication mode.
18. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the intelligence control unit is equipped with electric interfaces, and the electric interfaces are completed test data and stored, 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.
19. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, it is characterised in that: the control of the intelligence control unit is by field control, and/or passes through Background control.
20. on-line sampling check-up gas density electrical relay according to claim 1 or gas density as claimed in claim 2
Monitoring device, which is characterized in that further include: for the display interface of human-computer interaction, it is connected with the intelligence control unit, it is aobvious in real time
Show current verification data, or/and supports data input.
21. a kind of method of calibration of gas density relay characterized by comprising
When normal operating conditions, gas density relay monitors the gas density value in electrical equipment；
Gas density relay according to the checking time and gas density value situation of setting, allow to verify gas density after
Under the situation of electric appliance:
Valve is closed by intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that gas density relay connects
Point movement, contact movement are transmitted to intelligence control unit by on-line testing contact point signal sampling unit, and intelligence control unit is dynamic according to contact
Pressure value, temperature value when making obtain gas density value, or directly obtain gas density value, detect gas density relay
Contact point signal action value completes the verifying work of the contact point signal action value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opening valve.
22. a kind of method of calibration of gas density relay according to claim 21 characterized by comprising
When normal operating conditions, gas density relay monitors the gas density value in electrical equipment, while gas density relay
Device monitors the gas density value in electrical equipment on-line by gas density detection sensor and intelligence control unit；
Gas density relay according to the checking time and gas density value situation of setting, allow to verify gas density after
Under the situation of electric appliance:
Valve is closed by intelligence control unit；
On-line testing contact point signal sampling unit is adjusted to verification state by intelligence control unit, under verification state, online school
The contact point signal control loop for testing contact point signal sampling unit cutting gas density relay, by gas density relay ontology
Contact is connected to intelligence control unit；
By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, so that gas density relay connects
Point movement, contact movement are transmitted to intelligence control unit by on-line testing contact point signal sampling unit, and intelligence control unit is dynamic according to contact
Pressure value, temperature value when making obtain gas density value, or directly obtain gas density value, detect gas density relay
Contact point signal action value completes the verifying work of the contact point signal action value of gas density relay；
By intelligence control unit driving pressure regulating mechanism, slowly increase gas pressure, so that gas density relay connects
Point resets, and contact, which is resetted, is transmitted to intelligence control unit by on-line testing contact point signal sampling 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 gas density relay
Contact point signal return value completes the verifying work of the contact point signal return value of gas density relay；
After the completion of all contact point signal verifying works, intelligence control unit opening valve, and on-line testing contact point signal is sampled into list
Member is adjusted to working condition, and the contact point signal control loop of gas density relay is resumed operation normal operating conditions.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021043041A1 (en) * | 2019-09-04 | 2021-03-11 | 上海乐研电气有限公司 | Contact signal acquisition circuit for on-site on-line check of gas density relay |
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| US11988713B2 (en) | 2019-09-04 | 2024-05-21 | Shanghai Roye Electric Co., Ltd. | Contact signal acquisition circuit for on-site on-line check of gas density relay |
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