CN110487670A

CN110487670A - A kind of gas density relay and its method of calibration with online self checking function

Info

Publication number: CN110487670A
Application number: CN201910830161.6A
Authority: CN
Inventors: 金海勇; 夏铁新; 黄小泵; 郭正操; 常敏; 王乐乐
Original assignee: Shanghai Leyan Electric Co Ltd
Current assignee: Shanghai Leyan Electric Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2019-11-22

Abstract

The application provides a kind of gas density relay and its method of calibration with online self checking function, for high and medium voltage electrical equipment, including gas density relay ontology, gas density detection sensor, multiple-pass joint, thermoregulation mechanism, on-line testing contact point signal sampling unit and intelligence control unit.Control by intelligence control unit to thermoregulation mechanism, increase the temperature of gas density relay, and then the temperature of the temperature compensating element of density monitor increases, so that contact movement occurs for gas density relay ontology, contact movement is transmitted to intelligence control unit by on-line testing contact point signal sampling unit, density value when intelligence control unit is acted according to contact, detect the contact point signal action value and/or return value of gas density relay ontology, complete the verifying work of gas density relay, the verifying work of gas density relay can be completed to scene without service personnel, substantially increase the reliability of power grid, improve efficiency, it reduces costs.

Description

A kind of gas density relay and its method of calibration with online self checking function

Technical field

The present invention relates to technical field of electric power, and in particular to and it is a kind of to apply in high pressure, middle voltage electrical equipment, have online The gas density relay and its method of calibration of self checking function.

Background technique

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 (generally 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

It is above-mentioned to solve the purpose of the present invention is to provide a kind of gas density relay with online self checking function The problem of being proposed in technical background.

To achieve the above object, the invention adopts the following technical scheme:

The application first aspect provides a kind of gas density relay with online self checking function, comprising: gas Volume density relay ontology, gas density detection sensor, multiple-pass joint, thermoregulation mechanism, on-line testing contact point signal are adopted Sample unit and intelligence control unit；

The gas density detection sensor is connected to the gas density relay ontology；

The gas circuit of the gas density relay ontology, connects the first interface of the multiple-pass joint；

The thermoregulation mechanism is the adjustable regulating mechanism of temperature, is configured as adjusting the gas density relay sheet The gradient of temperature of the temperature compensating element of body makes the gas density relay ontology that contact point signal movement occur；

The on-line testing contact point signal sampling unit is directly or indirectly connected with the gas density relay ontology It connects, is configured as sampling the contact point signal generated when the contact of the gas density relay ontology acts；

Intelligence control unit, respectively with the gas density detection sensor, the thermoregulation mechanism and the on-line testing Contact point signal sampling unit is connected, and is configured as completing the control of the thermoregulation mechanism, pressure value acquisition and temperature value Acquisition, and/or the acquisition of gas density value, and the detection gas density relay ontology contact point signal action value and/or Contact point signal return value；

Wherein, the contact point signal includes alarm, and/or locking.

The application the second aspect provides a kind of gas density detecting device with online self checking function, comprising: Gas density relay ontology, gas density detection sensor, multiple-pass joint, thermoregulation mechanism, on-line testing contact point signal Sampling unit and intelligence control unit；

Wherein, the contact point signal includes alarm, and/or locking.

Preferably, the gas density detection sensor, the on-line testing contact point signal sampling unit and the intelligence control Unit is arranged on the gas density relay ontology；Alternatively, thermoregulation mechanism setting the gas density after Electric appliance body interior；Alternatively, the thermoregulation mechanism is arranged in the gas density relay body exterior；Alternatively, described Gas density detection sensor, the thermoregulation mechanism, the on-line testing contact point signal sampling unit and the intelligence control list Member is arranged on the gas density relay ontology；Alternatively, the multiple-pass joint is arranged in the gas density relay sheet On body；Alternatively, the thermoregulation mechanism is arranged on the multiple-pass joint；Alternatively, the thermoregulation mechanism, the gas Density detection sensor is arranged on the multiple-pass joint；Alternatively, the on-line testing contact point signal sampling unit and the intelligence Unit is controlled to be arranged on the multiple-pass joint.

Preferably, 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 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 gas density detection sensor includes pressure sensor and temperature sensor；Alternatively, using by pressing The gas density transmitter of force snesor and temperature sensor composition；Alternatively, the Density Detection using quartz tuning-fork technology senses Device.

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 the gas density detection sensor includes at least one pressure sensor, at least one temperature biography Sensor.

Specifically, the pressure sensor can be absolute pressure transducer, relative pressure sensor or absolute pressure and pass Sensor and relative pressure sensor；Can 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), resistance pressure transmitter (such as Baden pipe The pressure sensor of subsidiary slide wire resistance)；It can be analog quantity pressure sensor, be also possible to digital quantity pressure sensor；

Temperature sensor can be thermocouple, thermistor, semiconductor-type；It can be with contact and contactless；Can be Thermal resistance and thermocouple；It can be digital and analog.

It is highly preferred that the pressure sensor includes but is not limited to relative pressure sensor and/or absolute pressure sensor Device.

Further, it when the pressure sensor is absolute pressure transducer, is indicated with absolute pressure value, verification knot Fruit is corresponding 20 DEG C of absolute pressure value, is indicated with relative pressure, and check results are converted into corresponding 20 DEG C of phase To pressure value；When the pressure sensor is relative pressure sensor, indicated with relative pressure, check results are corresponding 20 DEG C of relative pressure, indicated with absolute pressure value, check results are converted into corresponding 20 DEG C of absolute pressure value； Conversion relation between the absolute pressure value and the relative pressure are as follows:

P_{Absolute pressure}=P_{Relative pressure}+P_{Standard atmospheric pressure}。

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 Device completes the gas density relay to the gas density of the electrical equipment monitored to the on-line monitoring of gas density On-line monitoring.

It is highly preferred that the intelligence control unit calculates the gas density value, the mean value using averaging method (mean value method) Method are as follows: in the time interval of setting, frequency acquisition is set, by N number of gas density of the different time points all collected Value carries out mean value calculation processing, obtains its gas density value；Alternatively, being walked at the time interval of setting, set temperature interval It is long, density value corresponding to the N number of different temperatures value collected in whole temperature ranges is carried out mean value calculation processing, is obtained To its gas density value；Alternatively, time interval, setting pressure intervals step-length in setting, in whole pressure ranges Density value corresponding to the N number of different pressures value collected carries out mean value calculation processing, obtains its gas density value；Its In, N is the positive integer more than or equal to 1.

Preferably, 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, complete the on-line testing of the gas density relay；Or Person,

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.

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 somebody's turn to do with pressure value output signal is compared Pressure value output signal is compared to be connected with the intelligence control unit.

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 thermoregulation mechanism is heating element；Alternatively, the thermoregulation mechanism include heating element, Heat preservation member, temperature controller, temperature detector, thermoregulation mechanism shell；Alternatively, the thermoregulation mechanism includes heating unit Part and temperature controller；Alternatively, the thermoregulation mechanism includes heating element, heating power adjuster and temperature controller； Alternatively, the thermoregulation mechanism includes heating element, cooling module, power governor and temperature controller；Alternatively, the temperature Spending regulating mechanism includes heating element, heating power adjuster and constant temperature controller；Alternatively, the thermoregulation mechanism includes adding Thermal element, temperature controller, temperature detector；Alternatively, the thermoregulation mechanism is heating element, the heating element setting Near temperature compensating element；Alternatively, the thermoregulation mechanism is micro constant-temperature case；Wherein, the quantity of the heating element For at least one, the heating element include but is not limited to silicon rubber heater, resistance wire, ribbon heater, electrical bar, air-heater, One of infrared heating device, semiconductor；The temperature controller connects the heating element, for controlling heating unit The heating temperature of part, the temperature controller include but is not limited to the control that PID controller, PID and fuzzy control are combined One of device, frequency-variable controller, PLC controller.

It is highly preferred that heating element in the thermoregulation mechanism include at least two power it is the same or different plus Thermal element；Or including the adjustable heating element of heating power.

It is highly preferred that at least two heating elements setting positions can be the same or different, can according to need and Rationally setting.

It is highly preferred that the gradient of temperature mode of the thermoregulation mechanism is Multistage Control.

Preferably, the thermoregulation mechanism passes through the control of intelligence control unit, in measurement gas density relay contact letter When number action value, temperature changing speed each second (or sets this and wants as needed no more than 1.0 DEG C when close to action value Ask), i.e., temperature requirement steadily rises or falls.

Preferably, a kind of gas density relay with online self checking function further include: valve, the one of the valve End is equipped with the connector that is connected with electrical equipment, be connected to electrical equipment, the other end of the valve and the gas density after The connection of electric appliance ontology；Alternatively, one end of the valve is equipped with the connector being connected with electrical equipment, the other end of the valve and institute State pressure regulating mechanism, gas density relay ontology connection.

It is highly preferred that the valve is also connected with the intelligence control unit, under the control of the intelligence control unit described in realization Valve turns off or on.

It is highly preferred that the pressure sensor be installed on it is in the gas circuit of the gas density relay ontology or described more In connecting tube in the gas circuit of pass joint or between the pressure regulating mechanism and the multiple-pass joint or the gas density In connecting tube in connecting tube between relay ontology and the multiple-pass joint or between the valve and the multiple-pass joint.

It is highly preferred that the electrical equipment includes SF6 outlet openings equipment, SF6 mixed gas electrical equipment, environment-friendly type gas Body 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.

It is highly preferred that the valve is motor-driven valve.

It is highly preferred that the valve is solenoid valve.

Further, the valve is permanent-magnet electromagnetic valve.

It it is highly preferred that the valve is piezo electric valve, or is temperature controlled valve, or made for use intelligent memory material, The new type of valve opened or closed using electric heating.

It is highly preferred that the valve is hose bending or is pinched mode and realizes and turn off or on.

It is highly preferred that the valve is sealed in a cavity or shell.

It is highly preferred that the valve and the pressure regulating mechanism are sealed in a cavity or shell.

It is highly preferred that the gas circuit two sides of the valve are respectively arranged with pressure sensor.

It is highly preferred that the front end of the valve is provided with gas density relay ontology or density switch.

It is highly preferred that the valve is embedded in the multiple-pass joint.Specifically, the multiple-pass joint is equipped with third interface, The third interface is equipped with the interconnecting piece docked with the electrical equipment, and the valve is embedded in the interconnecting piece.

It is highly preferred that a kind of gas density relay with online self checking function further include: Self-sealing valve, it is described Self-sealing valve is installed between the multiple-pass joint and the valve；Alternatively, the valve be installed on the multiple-pass joint with it is described self-styled Between valve.

Preferably, a kind of gas density relay with online self checking function further include: pressure regulating mechanism, The gas circuit of the pressure regulating mechanism is connected to the gas density relay ontology；The pressure regulating mechanism is configured as The pressure lifting of the gas density relay ontology, and then cooperation or/and combination temperature regulating mechanism are adjusted, the gas is made Contact point signal movement occurs for density monitor ontology；The intelligence control unit is connected with the pressure regulating mechanism, described in completion The control of pressure regulating mechanism；Alternatively, gas density relay further include: heating device, the intelligence control unit and the heating Device is connected；Alternatively, gas density relay further includes gas chamber and heating device, the gas chamber and the gas density relay Device ontology is connected, and the outside or inside of the gas chamber is equipped with heating device, and the intelligence control unit is connected with the heating device It connects.

It is highly preferred that the pressure regulating mechanism is sealed in a cavity or shell.

It is highly preferred that the pressure regulating mechanism is a sealed gas chamber, the outside or inside of the sealed gas chamber when verification It is led equipped with heating element, and/or cooling module by heating the heating element, and/or being freezed by the cooling module The temperature change of the gas in the sealed gas chamber is caused, and then completes the pressure lifting of the gas density relay.

Further, the heating element, and/or the cooling module are semiconductor.

Further, the pressure regulating mechanism further includes heat preservation member, and the heat preservation member is set to the outer of the sealed gas chamber Face.

It is highly preferred that the pressure regulating mechanism is cavity open at one end when verification, the other end of the cavity is connected to The multiple-pass joint；There is piston in the cavity, one end of the piston is connected with an adjusting rod, the outer end of the adjusting rod Driving part is connected, the other end of the piston protrudes into the opening, and, the drive in sealing contact with the inner wall of the cavity Dynamic component drives the adjusting rod and then the piston is driven to move in the cavity.

It is highly preferred that the pressure regulating mechanism is a sealed gas chamber when verification, 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.

It is highly preferred that the pressure regulating mechanism is the air bag that one end connects driving part, the air bag is in the driving The variation of generating body product, the air bag are connected to the multiple-pass joint under the driving of component.

It is highly preferred that the pressure regulating mechanism is bellows, one end of the bellows is connected to the multiple-pass joint, institute The other end for stating bellows stretches under the driving of the 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.

It is highly preferred that the pressure regulating mechanism is a vent valve.

Further, the pressure regulating mechanism further includes the flow valve for controlling gas release flow.

Further, 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.

It is highly preferred that the pressure regulating mechanism is a compressor.

It is highly preferred that the pressure regulating mechanism is a pump.

Further, the pump including but not limited to makes one of press pump, booster pump, electric air pump, Electromagnetic air pump.

It preferably, further include mutual self-correcting unit, intelligence control unit is by carrying out mutual self-correcting unit data detected Comparison, realizes the non-maintaining of gas density relay；Alternatively, by intelligence control unit and mutual self-correcting unit to data detected It compares, realizes the non-maintaining of gas density relay.

Preferably, the intelligence control unit further includes depth calculation unit, depth calculation unit can according to ambient temperature value, Electrical equipment gas density value or pressure value can be the gas density of required verification according to gas pressure-temperature characteristic Relay provides a suitable gas source of verification initial density；Alternatively, the intelligence control unit according to verification when ambient temperature value, The temperature value that the gas pressure value of electrical equipment gas chamber, the gas density relay need to verify, according to gas pressure-temperature Characteristic can provide the suitable gas source of verification initial density for the gas density relay of required verification.

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 one set of sampling contact, can be simultaneously at least One contact is automatically performed verification, and continuously measures, need not replace contact or reselect contact；Wherein, the contact include, But it is not limited to alarm contact, alarm contact+locking contact, alarm contact+1 contact of locking+locking, 2 contact, alarm contact+locking One of 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 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 has 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 of density monitor perhaps recording test time or record event time.

Preferably, the control of the intelligence control unit is by field control, and/or passes through Background control.

It is highly preferred that a kind of setting of the gas density relay with online self checking function according to the backstage Or instruction, 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, a kind of gas density relay with online self checking function, further includes: be used for human-computer interaction Display interface, be connected with the intelligence control unit, the current verification data of real-time display, and/or support data input.

Preferably, a kind of gas density relay with online self checking function, further includes: micro- water sensor, Micro- water sensor is connected with the gas density relay ontology and the intelligence control unit respectively.

It is highly preferred that a kind of gas density relay with online self checking function, further includes: gas circulator Structure, the gas circulation mechanism are connected with the gas density relay ontology and the intelligence control unit respectively, the gas 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, a kind of gas density relay with online self checking 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, a kind of gas density relay with online self checking function, further includes taking the photograph for monitoring As head.

Preferably, a kind of gas density relay with online self checking 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 gas density relay ontology includes: shell, and be disposed in the housing pedestal, pressure Detector, temperature compensating element, at least one signal generator；The first interface of the multiple-pass joint is connected with the pedestal It is logical；The on-line testing contact point signal sampling unit, is connected with the signal generator；

Wherein, the signal generator includes microswitch or magnetic-type electrical contact, the gas density relay ontology Pass through the signal generator output contact signal；The pressure detector includes Baden pipe or bellows；The temperature-compensating Element is using temperature-compensating plate or the gas of shell inner sealing.

It is highly preferred that the temperature that the gas density relay ontology is arranged at least one described temperature sensor is mended It repays element nearby or is arranged on temperature compensating element, or be integrated in the temperature compensating element.Preferably, at least one The pressure detector of the gas density relay ontology is arranged in close to the one of temperature compensating element in a temperature sensor End.

It is highly preferred that the gas density relay ontology further includes indication mechanism, the indication mechanism includes machine core, refers to Needle, dial, the machine core are fixed on the pedestal or in shell；The other end of the temperature compensating element also passes through connecting rod It connect with the machine core or is directly connect with the machine core；The pointer be installed on the machine core and be set to the dial it Before, the pointer shows gas density value in conjunction with the dial；And/or the indication mechanism includes the number that there is indicating value to show Code device or liquid crystal device.

It is highly preferred that the gas density relay ontology or gas density detecting device further include that contact resistance detection is single Member；The contact resistance detection unit is connected with contact point signal or is directly connected with signal generator；It is connect in on-line testing Under the control of point signal sampling unit, the contact point signal of gas density relay is isolated with its control loop, in density monitor Contact point signal when acting, and/or when being connected to the instruction of detection contact contact resistance, contact resistance detection unit can Detect the contact contact resistance value of gas density relay.

It is highly preferred that the gas density relay ontology or gas density detecting device further include that insulation resistance detection is single Member；The insulation resistance detection unit is connected with contact point signal or is directly connected with signal generator；It is connect in on-line testing Under the control of point signal sampling unit, the contact point signal of gas density relay is isolated with its control loop, in density monitor Contact point signal when acting, and/or when being connected to the instruction of detection contact insulation resistance, insulation resistance detection unit can Detect the contact insulating resistance value of gas density relay.

Preferably, at least two gas density relay ontologies, at least two multiple-pass joints, at least two temperature adjusters Structure, at least two on-line testing contact point signal sampling units and an intelligence control unit, a gas density detection sensor are completed The on-line testing of the gas density relay；Alternatively,

At least two gas density relay ontologies, at least two multiple-pass joints, at least two thermoregulation mechanisms, at least Two on-line testing contact point signal sampling units, at least two intelligence control units and a gas density detection sensor complete institute State the on-line testing of gas density relay；Alternatively,

At least two gas density relay ontologies, at least two multiple-pass joints, at least two thermoregulation mechanisms, at least Two on-line testing contact point signal sampling units, at least two gas density detection sensors and an intelligence control unit complete institute State the on-line testing of gas density relay.

A kind of method of calibration of gas density relay is provided in terms of the application third, comprising:

When normal operating conditions, the gas in gas density relay or gas density detecting device monitoring electrical equipment is close Angle value；

Gas density relay or gas density detecting device according to the checking time or/and checking command of setting, and Gas density value situation or/and temperature value situation, allow or/and can be under the situation of check-up gas density electrical relay:

Control by intelligence control unit to thermoregulation mechanism increases the temperature of gas density relay, and then gas The temperature of the temperature compensating element of density monitor increases, so that contact movement occurs for gas density relay, contact movement is logical It crosses on-line testing contact point signal sampling unit and is transmitted to intelligence control unit, pressure value, temperature when intelligence control unit is acted according to contact Value obtains gas density value, or directly obtains gas density value, detects the contact point signal action value of gas density relay, complete At 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 turns off the heating element of thermoregulation mechanism.

Preferably, a kind of method of calibration of gas density relay, comprising:

When normal operating conditions, the gas in gas density relay or gas density detecting device monitoring electrical equipment is close Angle value, while gas density relay or gas density detecting device are existed by gas density detection sensor and intelligence control unit Line monitors the gas density value in electrical equipment；

On-line testing contact point signal sampling unit is adjusted to verification state by intelligence control unit, under verification state, In Line verifies the control loop of the contact point signal of contact point signal sampling unit cutting gas density relay, by gas density relay The contact of ontology is connected to intelligence control unit；

Control by intelligence control unit to thermoregulation mechanism increases the temperature of gas density relay, and then density The temperature of the temperature compensating element of relay increases so that contact movement occurs for gas density relay, contact movement by Line verification contact point signal sampling unit is transmitted to intelligence control unit, and the pressure value, temperature value when intelligence control unit is acted according to contact obtain To gas density value, or gas density value is directly obtained, detect the contact point signal action value of gas density relay, completes gas The verifying work of the contact point signal action value of volume density relay；

Control by intelligence control unit to thermoregulation mechanism reduces the temperature of gas density relay, and then density The temperature of the temperature compensating element of relay reduces so that gas density relay occurs contact and resets, contact reset by Line verification contact point signal sampling unit is transmitted to intelligence control unit, and the pressure value, temperature value when intelligence control unit is resetted according to contact obtain To gas density value, or gas density value is directly obtained, detect the contact point signal return value of gas density relay, completes gas The verifying work of the contact point signal return value of volume density relay；

After the completion of all contact point signal verifying works, intelligence control unit turns off the heating element of thermoregulation mechanism, and On-line testing contact point signal sampling unit is adjusted to working condition, the control loop of the contact point signal of gas density relay is extensive Multiple normal operation working condition.

Preferably, the gas density relay or gas density detecting device further include pressure regulating mechanism and valve, institute The gas circuit for stating pressure regulating mechanism is connected with the gas circuit of gas density relay ontology, and one end of the valve is equipped with and electrically sets The standby connector being connected, the other end of the valve are connected with the gas circuit of gas density relay ontology；The described method includes:

When normal operating conditions, gas density relay monitors the gas density value in electrical equipment；

Valve is closed by intelligence control unit；

By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, and by intelligence control unit to temperature The control for spending regulating mechanism, increases the temperature of gas density relay, and then the temperature of the temperature compensating element of density monitor Degree increases, so that contact movement occurs for gas density relay, contact movement is passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is acted according to contact obtain gas density value, or directly obtain gas Volume density value detects the contact point signal action value of gas density relay, and the contact point signal for completing gas density relay is dynamic The verifying work of work value；

After the completion of all contact point signal verifying works, intelligence control unit opening valve and intelligence control unit turn off temperature tune Save the heating element of mechanism.

Valve is closed by intelligence control unit；

Control by intelligence control unit to thermoregulation mechanism increases the temperature of gas density relay, and then density The temperature of the temperature compensating element of relay increases, and by intelligence control unit driving pressure regulating mechanism, keeps gas pressure slow Slow decline, so that contact movement occurs for gas density relay, contact movement is passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is acted according to contact obtain gas density value, or directly obtain gas Volume density value detects the contact point signal action value of gas density relay, and the contact point signal for completing gas density relay is dynamic The verifying work of work value；

Control by intelligence control unit to thermoregulation mechanism reduces the temperature of gas density relay, and then density The temperature of the temperature compensating element of relay reduces, and by intelligence control unit driving pressure regulating mechanism, keeps gas pressure slow Slow to rise, so that gas density relay occurs contact and resets, contact is resetted to be passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is resetted according to contact obtain gas density value, or directly obtain gas Volume density value, detects the contact point signal return value of gas density relay, and the contact point signal for completing gas density relay returns Return the verifying work of value；

After the completion of all contact point signal verifying works, intelligence control unit opening valve and intelligence control unit turn off temperature tune The heating element of mechanism is saved, and on-line testing contact point signal sampling unit is adjusted to working condition, gas density relay The control loop of contact point signal is resumed operation normal operating conditions.

Preferably, the gas density relay or gas density detecting device further include heating device and valve, it is described plus Thermal device is connected with the intelligence control unit, and one end of the valve is equipped with the connector being connected with electrical equipment, the valve The other end is connected with the gas circuit of gas density relay ontology；The described method includes:

The heating device is heated by intelligence control unit, causes the gas between the valve and gas density relay indoor The temperature change of gas closes valve by intelligence control unit, then turn off the heating device by intelligence control unit to after setting value；

After the temperature or pressure of gas chamber drop to properly, then by control of the intelligence control unit to thermoregulation mechanism, make gas The temperature of volume density relay increases, and then the temperature of the temperature compensating element of density monitor increases so that gas density after Contact movement occurs for electric appliance, and contact movement is transmitted to intelligence control unit, intelligence control unit by on-line testing contact point signal sampling unit Pressure value, temperature value when being acted according to contact obtain gas density value, or directly obtain gas density value, detect that gas is close The contact point signal action value for spending relay, 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 and intelligence control unit turn off temperature tune Save mechanism.

Preferably, the gas density relay or gas density detecting device further include valve, gas chamber and heating device, institute It states gas chamber to be connected with the gas density relay ontology, the heating device is set to the outside or inside of the gas chamber, institute The one end for stating valve is equipped with the connector being connected with electrical equipment, the other end of the valve and the gas of gas density relay ontology Road is connected；The described method includes:

The heating device is heated by intelligence control unit, leads to the temperature change of the indoor gas of the gas, arrives setting value Afterwards, valve is closed by intelligence control unit, then the heating device is turned off by intelligence control unit；

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 gas density relay and its method of calibration with online self checking function, for height Pressure, middle voltage electrical equipment, including gas density relay ontology, gas density detection sensor, multiple-pass joint, temperature adjuster Structure, on-line testing contact point signal sampling unit and intelligence control unit.It is mended by the temperature that thermoregulation mechanism adjusts density monitor The gradient of temperature of element is repaid, so that contact movement occurs for gas density relay ontology, contact movement passes through on-line testing contact Signal sampling unit is transmitted to intelligence control unit, and density value when intelligence control unit is acted according to contact detects gas density relay The alarm of device ontology and/or locking contact point signal action value and/or return value, without loading densities relay checking valve, nothing Palpus service personnel can complete the verifying work of gas density relay to scene, improve the reliability of power grid, improve effect Rate reduces costs, and the non-maintaining of gas density relay may be implemented.The entire checking procedure of the application realizes SF simultaneously₆ Gas zero-emission, 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 the structural schematic diagram of the gas density relay with online self checking function of embodiment one；

Fig. 2 is a kind of structural schematic diagram of gas density relay ontology of the application preferred embodiment；

Fig. 3 is the structural schematic diagram of the gas density relay with online self checking function of embodiment two；

Fig. 4 is the structural schematic diagram of the gas density relay with online self checking function of embodiment three；

Fig. 5 is the structural schematic diagram of the gas density relay with online self checking function of example IV；

Fig. 6 is the structural schematic diagram of the gas density relay with online self checking function of embodiment five；

Fig. 7 is the structural schematic diagram of the gas density relay with online self checking function of embodiment six.

Specific embodiment

To make the purpose of the present invention, technical solution and effect clearer, clear and definite, referring to the drawings and give an actual example to this Invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit The fixed present invention.

Embodiment one:

As shown in Figure 1, a kind of gas density relay with online self checking function that the embodiment of the present invention one provides Or gas density detecting device, comprising: gas density relay ontology 1, pressure sensor 2, temperature sensor 3, temperature are adjusted Mechanism 5,6, intelligence control units 7 of on-line testing contact point signal sampling unit, multiple-pass joint 9 and tonifying Qi interface 10.The temperature Regulating mechanism 5 is oppositely arranged with gas density relay ontology 1, and the shell of density monitor ontology 1 is arranged in temperature sensor 3 It is interior.The gas density relay ontology 1 and tonifying Qi interface 10 are arranged on multiple-pass joint 9, pressure sensor 2, on-line testing Contact point signal sampling unit 6 and intelligence control unit 7 are arranged on density monitor ontology 1.Thermoregulation mechanism 5 setting density after 1 outside of electric appliance ontology.Specifically, density monitor ontology 1 is connected by multiple-pass joint 9 with electrical equipment 8；The pressure passes Sensor 2 is connected in gas circuit with gas density relay ontology 1；On-line testing contact point signal sampling unit 6 respectively with gas Density monitor ontology 1 is connected with intelligence control unit 7；The pressure sensor 2, temperature sensor 3 and thermoregulation mechanism 5 divide It is not connected with intelligence control unit 7；The tonifying Qi interface 10 is connected with the multiple-pass joint 9.

The thermoregulation mechanism 5 is configured as adjusting the temperature compensating element of the gas density relay ontology 1 Gradient of temperature makes the gas density relay ontology 1 that contact movement occur；The on-line testing contact point signal sampling unit 6, It is connected with the gas density relay ontology 1, is configured as sampling the contact letter of the gas density relay ontology 1 Number；Wherein, the contact point signal includes alarm, and/or locking；The thermoregulation mechanism 5 is mainly by heating element 501, guarantor The composition such as warm part 502, controller 504, temperature detector 3 (as temperature sensor), thermoregulation mechanism shell 503.Control PID control, or the control mode being combined using PID and fuzzy control can be used in device 504 processed.501 electric heating of heating element Operating power range is controlled by controller 504 and gradient of temperature amplitude set value.Temperature is controlled by different watt levels Amplitude of variation.Irrelevance can be set, be allowed to heat or freeze in advance.Temperature in thermoregulation mechanism 5 passes through intelligence control list Member 7 and controller 504, when measuring gas density relay contact signalizing activity value, temperature changing speed when close to action value No more than 1.0 DEG C of each second (or even being not more than 0.5 DEG C each second, or set the requirement as needed), i.e. temperature requirement Steadily rise or fall.

Its working principles are as follows:

Operation or control by intelligence control unit 7 to thermoregulation mechanism 5, make the temperature of gas density relay ontology 1 It increases, and then the temperature of the temperature compensating element of density monitor increases, temperature changing speed each second is not when close to action value Greater than 1.0 DEG C (or even being not more than 0.5 DEG C each second, or set the requirement as needed), i.e., temperature requirement steadily rises Or decline.Until contact movement occurs for gas density relay ontology 1, contact movement is single by the sampling of on-line testing contact point signal Member 6 is transmitted to intelligence control unit 7, and the pressure value, temperature value when intelligence control unit 7 is acted according to contact obtain gas density value, or straight It connects to obtain gas density value, detects the contact point signal action value of gas density relay, complete connecing for gas density relay The verifying work of point signalizing activity value.For example, being that (rated value is 0.6/0.52/0.50MPa for density monitor parameter 0.6MPa/ alarm pressure value 0.52MPa/ alarm pressure value 0.50MPa, relative pressure) gas density relay, when environment temperature When degree is 5 DEG C, the gas pressure of 8 gas chamber of electrical equipment is 0.5562MPa (relative pressure), at this time in check system, pressure value Constant, when temperature is increased to 29.5 DEG C, alarm contact is acted, when intelligence control unit 7 can be acted according to contact Pressure value 0.5562MPa (relative pressure), 29.5 DEG C of temperature value obtain gas density relay alarm contact action value 0.5317MPa (relative pressure), intelligence control unit 7 can be obtained by the error of alarm contact action value: 0.0117MPa (0.5317MPa-0.52MPa=0.0117MPa) completes the verification of the alarm contact action value of density monitor.

Operation or control by intelligence control unit 7 to thermoregulation mechanism 5, make the temperature of gas density relay ontology 1 It reduces, and then the temperature of the temperature compensating element of density monitor ontology 1 reduces, so that gas density relay occurs contact and answers Position, contact, which is resetted, is transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is resetted according to contact When pressure value, temperature value obtain gas density value, or directly obtain gas density value, detect connecing for gas density relay Point signal return value, completes the verifying work of the contact point signal return value of gas density relay；For example, for above-mentioned density after Electrical parameter is that (rated value is 0.6MPa/ alarm pressure value 0.52MPa/ alarm pressure value to 0.6/0.52/0.50MPa 0.50MPa, relative pressure) gas density relay, when environment temperature is 5 DEG C, the gas pressure in electrical equipment 8 is 0.5562MPa (relative pressure), equally at this time in check system, pressure value is constant, when temperature is reduced to 24.8 DEG C, alarm Contact occurs contact and resets, pressure value 0.5562MPa (relative pressure), temperature when intelligence control unit 7 can be resetted according to contact 24.8 DEG C of angle value obtain gas density relay alarm contact return value 0.5435MPa (relative pressure), intelligence control unit 7 Obtain the differential gap of alarm contact: 0.0118MPa (0.5435MPa-0.5317MPa=0.0118MPa) thus completes density The verification of the alarm contact action value of relay.Intelligence control unit 7 is according to requiring, according to check results (verification data), so that it may Determine the behavior pattern (such as qualified or unqualified) of verified gas density relay.

After the completion of all contact point signal verifying works, thermoregulation mechanism is turned off by artificial or intelligence control unit 7 Heating element 501.

Wherein, gas density relay ontology 1, comprising: the gas density relay of bimetallic strip compensation, gas compensation The gas density relay of gas density relay or bimetal leaf and gas compensation mixed type；Entirely mechanical gas is close Spend the gas density relay of relay, numeric type gas density relay, machinery and digital mating type；With instruction density after The electric appliance density monitor of liquid crystal display (density monitor of density monitor or digital-scroll technique that pointer is shown), without finger The density monitor (i.e. density switch) shown；SF6 gas density is relay, SF6 mixed gas density monitor, N2 gas density Relay, other gas density relays etc..

The type of pressure sensor 2: absolute pressure transducer, relative pressure sensor or absolute pressure transducer and phase To pressure sensor, quantity can be with several.Pressure sensor form can be diffusion silicon pressure sensor, MEMS pressure sensing Device, chip type pressure sensor, coil-induced pressure sensor (pressure measurement sensor that such as Baden pipe is attached to induction coil), Resistance pressure transmitter (pressure measurement sensor that such as Baden pipe is attached to slide wire resistance).It can be analog quantity pressure sensor, It is also possible to digital quantity pressure sensor.Pressure acquisition is the various pressure elements such as pressure sensor, pressure transmitter, such as is expanded Dissipate silicon formula, sapphire formula, piezoelectric type, strain chip (resistance-strain chip, ceramics strain chip).

Temperature sensor 3 may is that thermocouple, thermistor, semiconductor-type；It can be with contact and contactless；It can be with For thermal resistance and thermocouple.In short, temperature acquisition can use the various temperature-sensing elements such as temperature sensor, temperature transmitter.

The thermoregulation mechanism 5 is heating element；Alternatively, the thermoregulation mechanism is mainly by heating element, heat preservation The composition such as part, controller, temperature detector, thermoregulation mechanism shell；Alternatively, the thermoregulation mechanism is mainly by heating unit Part and temperature controller composition；Alternatively, the thermoregulation mechanism is mainly by heating element, heating power adjuster and temperature control Device composition processed；Alternatively, the thermoregulation mechanism is mainly by heating element, cooling module, power governor and temperature controller Composition；Alternatively, the thermoregulation mechanism is mainly made of heating element, heating power adjuster and constant temperature controller；Alternatively, What the thermoregulation mechanism was mainly made of heating element, controller, temperature detector etc.；Alternatively, the temperature adjuster Structure is heating element, and the heating element is arranged near temperature compensating element；Alternatively, the thermoregulation mechanism is miniature perseverance Incubator；Wherein, the heating element includes but is not limited to resistance wire, electrothermal alloy, ribbon heater, electroheat pair, electrical bar, hot wind Machine, infrared heating device, microwave heating equipment, electromagnetic induction thermal, semiconductor, heating wire, electric hot plate, heating cable, electricity Hot plate, Electrothermal ring, electric-heating belt, electrical heating core, mica fever tablet, ceramic heating plate, Elema, heating wire, in power grid band One kind；The heating element is made of several group of heating elements；The controller include but is not limited to PID controller, One of controller that PID and fuzzy control are combined, frequency-variable controller, PLC controller.

The contact point signal that the on-line testing contact point signal sampling unit 6 mainly completes gas density relay ontology 1 is adopted Sample.I.e. the basic demand of on-line testing contact point signal sampling unit 6 or function are: 1) not influencing the peace of electrical equipment in verification Row for the national games.It is exactly that when the contact point signal of gas density relay ontology 1 acts, will not influence electrical equipment in verification Safe operation；2) the contact point signal control loop of gas density relay ontology 1 does not influence the performance of gas density relay, The performance for not influencing intelligence control unit 7 especially will not make gas density relay be damaged or influence test job.

The basic demand of the intelligence control unit 7 or function are: completing the control to thermoregulation mechanism 5 by intelligence control unit 7 System and signal acquisition.Realize: be able to detect that pressure value when the contact point signal of gas density relay ontology 1 acts and Temperature value, pressure value P when being converted into corresponding 20 DEG C₂₀(density value) can detect gas density relay ontology 1 Contact action value P_D20, complete the verifying work of gas density relay ontology 1.Alternatively, can directly detect gas density after Density value P when the contact point signal of electric appliance ontology 1 acts_D20, complete the verifying work of gas density relay ontology 1.

Certainly, intelligence control unit 7 can also be realized: complete test data storage；And/or test data export；And/or test Data are printable；And/or data communication can be carried out with host computer；And/or analog quantity, digital information can be inputted.The intelligence control Unit 7 further includes communication module, realizes the information such as remote transmitting test data and/or check results by communication module；When When the rated pressure value output signal of the gas density relay ontology 1, intelligence control unit 7 acquires density at that time simultaneously Value completes the rated pressure value verification of gas density relay ontology 1.The gas density relay sheet can be passed through simultaneously The test of the rated pressure value of body 1, complete gas density relay ontology 1, pressure sensor 2, between temperature sensor 3 from Verifying work is realized non-maintaining.

Electrical equipment, including SF6 outlet openings equipment, SF6 mixed gas electrical equipment, environment-friendly type outlet openings equipment, Or other insulating gas electrical equipments.Specifically, electrical equipment includes GIS, GIL, PASS, breaker, current transformer, voltage Mutual inductor, transformer, gas-filling cabinet, ring network cabinet etc..

Gas density relay ontology 1, pressure sensor 2, temperature sensor 3, thermoregulation mechanism 5, on-line testing connect It can according to need between point signal sampling unit 6, intelligence control unit 7 and multiple-pass joint 9 and carry out appropriate flexible setting.Such as gas Together with density monitor ontology 1, pressure sensor 2 can be set with temperature sensor 3；Or 1 He of density monitor ontology Thermoregulation mechanism 5 can be set together.In short, the setting between them can flexible permutation and combination.

Fig. 2 is a kind of structural schematic diagram of the gas density relay ontology 1 of preferred embodiment of the application.As shown in Fig. 2, A kind of gas density relay ontology 1 includes: shell 101, and the pedestal 102 in the shell 101, end seat 108, pressure Force detector 103, temperature compensating element 104, several signal generators 109, machine core 105, pointer 106, dial 107.It is described One end of pressure detector 103 is fixed on the pedestal 102 and in communication, and the other end of the pressure detector 103 is logical It crosses the end seat 108 to be connected with one end of the temperature compensating element 104, the other end of the temperature compensating element 104 is set There are crossbeam, the contact or disconnected that the crossbeam is equipped with and pushes the signal generator 109, makes the signal generator 109 The regulating part opened.The machine core 105 is fixed on the pedestal 102；The other end of the temperature compensating element 104 also passes through company Bar connect with the machine core 105 or directly connect with the machine core 105；The pointer 106 is installed on 105 core of machine and sets Before the dial 107, the pointer 106 shows gas density value in conjunction with the dial 107.The gas density after Electric appliance ontology 1 can also include the digital device or liquid crystal device that there is indicating value to show.Wherein, the signal generator 109 wraps Microswitch or magnetic-type electrical contact are included, the gas density relay ontology 1 passes through 109 output contact of signal generator Signal；The pressure detector 103 includes Baden pipe or bellows；The temperature compensating element 104 uses temperature-compensating plate Or the gas of shell inner sealing.The gas density relay ontology 1 of the present embodiment can also include: oil-filled type density monitor, Without oil type density monitor, air density meter, gas density switch or gas gauge.

The first interface of the multiple-pass joint 9 is connected with the pedestal 102；The second interface of the multiple-pass joint 9 with The pressure sensor 2 is connected；The on-line testing contact point signal sampling is 6 yuan single, is connected with the signal generator 109 It connects.

In the gas density relay ontology 1 of the present embodiment, based on pressure detector 103 and temperature compensating element is utilized The pressure and temperature of 104 pairs of variations is modified, to reflect the variation of sulfur hexafluoride gas density.It is i.e. lithium in measured medium Under the pressure effect of sulphur (SF6) gas, because of the effect of temperature compensating element 104, the variation of sulfur hexafluoride gas density value When, the pressure value of sulfur hexafluoride gas also correspondingly changes, and the end of pressure detector 103 is forced to generate corresponding flexible deformation Displacement, by means of temperature compensating element 104, passes to machine core 105, and machine core 105 passes to pointer 106 again, then by tested six Sulfur fluoride gas density value indicates on dial 107.Signal generator 109 is used as output alarm blocking contact.In this way Gas density relay ontology 1 can show sulfur hexafluoride gas density value.If gas leakage, sulfur hexafluoride gas Density value has dropped, and pressure detector 103, which generates, passes to machine core by temperature compensating element 104 to bottom offset accordingly 105, machine core 105 passes to pointer 106 again, and pointer 106 is just walked toward the small direction of indicating value, and leakage is particularly shown on dial 107 Gas degree；Meanwhile pressure detector 103 drives crossbeam to bottom offset by temperature compensating element 104, the regulating part on crossbeam is gradually From signal generator 109, to a certain extent when, the contact of signal generator 109 issues the (alarm of corresponding contact point signal Or locking), reach monitoring and control the sulfur hexafluoride gas density in the equipment such as electric switch, makes electrical equipment trouble free service.

If gas density value increases, i.e., the indoor sulfur hexafluoride gas pressure value of blanket gas is greater than the lithium of setting When sulphur gas pressure value, pressure value is also correspondingly increased, and the end of pressure detector 103 and temperature compensating element 104 generate phase That answers shifts up, and temperature compensating element 104 shifts up crossbeam also, and the regulating part on crossbeam just shifts up and pushes letter The contact of number generator 109 disconnects, and contact point signal (alarm or locking) just releases.

Working principle:

Intelligence control unit 7 monitors the gas pressure and temperature of electrical equipment according to pressure sensor 2, temperature sensor 3, obtains To corresponding 20 DEG C of pressure value Ps₂₀(i.e. gas density value).When needing or/and density monitor ontology 1 can be verified, at this time If gas density value P₂₀The safety check density value P of >=setting_S；Gas density relay issues instruction, that is, passes through intelligence control Unit 7 disconnects the control loop of gas density relay ontology 1, so that will not when on-line testing gas density relay ontology 1 The safe operation of electrical equipment is influenced, will not accidentally send out alarm signal or lock-in control circuit in verification.Because gas is close Relay is spent before starting verification, has carried out gas density value P₂₀The safety check density value P of >=setting_SMonitoring and sentence It is disconnected, the gas of electrical equipment be in operational envelope, moreover gas leakage is a slow process, when verification is safety 's.Meanwhile intelligence control unit 7 is connected to the contact sample circuit of gas density relay ontology 1, then, intelligence control unit 7 is to temperature tune The operation or control for saving mechanism 5, increase the temperature of gas density relay ontology 1, and then the temperature-compensating of density monitor The temperature of element increases, and temperature changing speed each second, (or even each second was not more than 0.5 no more than 1.0 DEG C when close to action value DEG C, or set the requirement as needed), i.e., temperature requirement steadily rises or falls.Until gas density relay ontology 1 Contact movement occurs, contact movement is transmitted to intelligence control unit 7, intelligence control unit 7 by on-line testing contact point signal sampling unit 6 Pressure value, temperature value when acting according to contact obtain gas density value, or directly obtain gas density value, detect gas density The contact point signal action value of relay completes the verifying work of the contact point signal action value of gas density relay.

Operation or control by intelligence control unit 7 to thermoregulation mechanism 5, make the temperature of gas density relay ontology 1 It reduces, and then the temperature of the temperature compensating element of density monitor ontology 1 reduces, so that gas density relay occurs contact and answers Position, contact, which is resetted, is transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is resetted according to contact When pressure value, temperature value obtain gas density value, or directly obtain gas density value, detect connecing for gas density relay Point signal return value, completes the verifying work of the contact point signal return value of gas density relay.Thus complete density relay The verification of the alarm contact action value of device.Intelligence control unit 7 is according to requiring, according to check results (verification data), so that it may determine The behavior pattern (such as qualified or unqualified) of the gas density relay verified.Verify repeatedly repeatedly (such as 2~3 It is secondary), its average value is then calculated, this completes the verifying works of gas density relay ontology 1.Then, intelligence control unit 7 Disconnect gas density relay ontology 1 contact sample circuit, at this time the contact of gas density relay ontology 1 just with intelligence control list Member 7 is not connected with.Meanwhile the heating element of thermoregulation mechanism is turned off by intelligence control unit 7, and by on-line testing contact point signal Sampling unit is adjusted to working condition, and the control loop of the contact point signal of gas density relay, which is resumed operation, works normally shape State.The control loop of gas density relay ontology 1, the density of gas density relay ontology 1 are connected to by intelligence control unit 7 Monitoring loop works normally, the gas density of 1 security monitoring electrical equipment of gas density relay ontology, keeps electrical equipment safe Reliably work.Thus facilitate the on-line testing work for completing gas density relay ontology 1, while on-line testing gas is close It will not influence the safe operation of electrical equipment when spending relay ontology 1.

After gas density relay ontology 1 completes verifying work, gas density relay is just determined, Ke Yigao Show testing result.Mode is flexible, and specifically can be with: 1) gas density relay (or gas density detecting device) can be on the spot Bulletin, such as shown by indicator light, number or liquid crystal etc.；2) or gas density relay (or gas density detecting device) can To implement to upload by online teletransmission communication modes, such as the backstage of on-line monitoring system can be uploaded to；3) or by wireless It uploads, uploads to specific terminal, such as can wirelessly upload mobile phone；4) it or by other approach uploads；5) or abnormal knot Fruit is uploaded by alarm signal line or dedicated signal lines；6) it individually uploads, or bundlees and upload with other signals.In short, gas is close It, can if any exception after spending the on-line testing work that relay (or gas density detecting device) completes gas density relay It is automatic to issue alarm, distal end can be uploaded to, or can be sent on specified receiver, such as be sent to mobile phone.Alternatively, gas After volume density relay completes the verifying work of gas density relay, if any exception, intelligence control unit 7 can pass through gas density The alarm contact point signal of relay ontology 1 uploads distal end (monitoring room, background monitoring platform etc.), and can also show announcement on the spot Show.The gas density relay on-line testing of simple version, can have verification abnormal result to upload by alarm signal line.It can To be uploaded with certain rule, for example, it is abnormal when, in an alarm contact contact in parallel, regularly open and close, Situation can be obtained by parsing；Or it is uploaded by independent checking signal line.On specifically can uploading well with state or be problematic It passes, can also be monitored on-line and be uploaded by teletransmission density, or check results are uploaded by individual checking signal line, or passes through It shows, alarms on the spot on the spot, or by wirelessly uploading, network and upload with smart phone.Its communication mode be it is wired or wireless, have The communication modes of line can for the industrial bus such as RS232, RS485, CAN-BUS, fiber optic Ethernet, 4-20mA, Hart, IIC, SPI, Wire, coaxial cable, PLC power carrier etc.；Wireless communication mode can for 2G/3G/4G/5G etc., WIFI, bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, quantum communications, sonar, 5G/NB- built in sensor IOT communication module (such as NB-IOT).In short, can be with multiple form, multiple combinations, fully ensure that gas density relay can By performance.

Gas density relay (or gas density detecting device) has safety protection function, particularly as being less than setting value When, gas density relay no longer carries out on-line testing to density monitor with regard to automatic, and issues bulletin signal.For example, when setting Standby gas density value is less than setting value P_SWhen, just do not verify.Such as: only when the gas density value of equipment >=(alarm pressure Force value+0.02MPa) when, it just can be carried out on-line testing.

Gas density relay (or gas density detecting device) can carry out on-line testing according to the time of setting, can also To carry out on-line testing according to the temperature of setting (such as limit high temperature, high temperature, limit low temperature, low temperature, room temperature, 20 degree etc.).It is high When temperature, low temperature, room temperature, 20 DEG C of environment temperature on-line testings, error determines to require to be different, such as 20 DEG C of environment temperatures It can be 1.0 grades or 1.6 grades according to the required precision of gas density relay when verification, when high temperature can be 2.5 grades.Specifically It can be implemented according to the requirement of temperature according to relevant criterion.Such as according to " the sulfur hexafluoride gas density relay school DL/T 259 Test regulation " in 4.8 temperature-compensating performances regulation, required precision corresponding to each temperature value.

Gas density relay can be according to density monitor at different temperature, and the different periods carries out its error The comparison of performance.That is different times, the comparison in same temperature ranges stated determine the performance of gas density relay, electrical equipment. Comparison, history and present comparison with history each period.

Gas density relay can verify multiple (such as 2~3 times) repeatedly, according to each check results, calculate it Average value.When necessary, on-line testing can be carried out to gas density relay at any time.Gas density relay or gas density prison Surveying device can refer to equally.

Gas density relay has pressure, temperature measurement and software scaling function.It is transported safely not influencing electrical equipment Under the premise of row, can on-line checking go out the alarm of gas density relay ontology 1 and/or locking and/or is returned contact action value Return value.Certainly the return value of alarm and/locking contact point signal can also be according to requiring not test.Meanwhile gas density relay The gas density value and/or pressure value and/or temperature value of electrical equipment can also be monitored on-line, and upload to target device reality Now monitor on-line.

Embodiment two:

As shown in figure 3, a kind of gas density relay with online self checking function provided by Embodiment 2 of the present invention Or gas density detecting device, comprising: gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, temperature Regulating mechanism 5, on-line testing contact point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, pressure adjust machine Structure 11.One end of the valve 4 is sealedly attached on electrical equipment 8, and the other end of the valve 4 is connected with multiple-pass joint 9.Gas Density monitor ontology 1 is mounted on multiple-pass joint 9；The pressure sensor 2, temperature sensor 3 setting gas density after On electric appliance ontology 1, pressure sensor 2 is connected in gas circuit with gas density relay ontology 1；The thermoregulation mechanism 5 It is arranged on density monitor ontology 1；The thermoregulation mechanism 5 is mainly made of heating element 501, is controlled by intelligence control unit 7 System, the i.e. controller of heating element 501 and intelligence control unit 7 are arranged or design together.The pressure regulating mechanism 11 is mounted on On multiple-pass joint 9, pressure regulating mechanism 11 is connected with gas density relay ontology 1；The sampling of on-line testing contact point signal is single Member 6 and intelligence control unit 7 are set together.The pressure sensor 2, temperature sensor 3, valve 4, thermoregulation mechanism 5 and pressure Regulating mechanism 11 is connected with intelligence control unit 7 respectively.The tonifying Qi interface 10 is connected with the multiple-pass joint 9.

What is different from the first embodiment is that the present embodiment further includes pressure regulating mechanism 11.The pressure regulating mechanism 11 wraps Piston 1101, driving mechanism 1102, sealing ring 1110 are included, by driving mechanism 1102 with piston 1101 in pressure regulating mechanism Interior movement, and then complete the lifting of pressure.

Working principle are as follows: on-line testing contact point signal sampling unit 6 is adjusted to by intelligence control unit 7 by verification state, In Under verification state, the control that on-line testing contact point signal sampling unit 6 cuts off the contact point signal of gas density relay ontology 1 is returned The contact of gas density relay ontology 1 is connected to intelligence control unit 7 by road；And by intelligence control unit 7, by gas density after Valve 4 between electric appliance ontology 1 and electrical equipment is closed；By 7 driving pressure regulating mechanism 11 of intelligence control unit, make gas density relay The pressure of device slowly declines, and after dropping to target pressure value, can stop this operation.Then, by intelligence control unit 7 to temperature The operation or control of regulating mechanism 5 increase the temperature of gas density relay ontology 1, and then the temperature of density monitor is mended The temperature for repaying element increases, so that contact movement occurs for gas density relay, contact movement passes through on-line testing contact point signal Sampling unit 6 is transmitted to intelligence control unit 7, and the pressure value, temperature value when intelligence control unit 7 is acted according to contact obtain gas density Value, or gas density value is directly obtained, it detects the contact point signal action value of gas density relay, completes gas density relay The verifying work of the contact point signal action value of device, the operation are similar to embodiment one.Intelligence control unit 7 further includes depth calculation list Member, depth calculation unit can be according to ambient temperature value, electrical equipment gas density value or pressure values.

Operation or control by intelligence control unit 7 to thermoregulation mechanism 5, make the temperature of gas density relay ontology 1 It reduces, and then the temperature of the temperature compensating element of density monitor reduces, so that gas density relay ontology 1 occurs contact and answers Position, contact, which is resetted, is transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is resetted according to contact When pressure value, temperature value obtain gas density value, or directly obtain gas density value, detect connecing for gas density relay 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, the heating unit of thermoregulation mechanism is turned off by intelligence control unit 7 Part, and on-line testing contact point signal sampling unit 6 is adjusted to working condition, the control of the contact point signal of gas density relay Circuit resumes operation normal operating conditions.In the present embodiment, the operation of thermoregulation mechanism and pressure regulating mechanism in proper order can be with Flexibly, it can first operating pressure regulating mechanism, then rear operation temperature regulating mechanism；Or it can first operation temperature adjusting machine Structure, then rear operating pressure regulating mechanism；Or it can be operated simultaneously with pressure regulating mechanism and thermoregulation mechanism.

Embodiment three:

As shown in figure 4, a kind of gas density relay with online self checking function that the embodiment of the present invention three provides (or density monitoring device), comprising: gas density relay ontology 1, first pressure sensor 21, second pressure sensor 22, First temperature sensor 31, second temperature sensor 32, thermoregulation mechanism 5, on-line testing contact point signal sampling unit 6, intelligence Control unit 7, multiple-pass joint 9, tonifying Qi interface 10, Self-sealing valve.One end of the Self-sealing valve is sealedly attached on electrical equipment, described The other end of Self-sealing valve is connected with multiple-pass joint 9.Gas density relay ontology 1, second pressure sensor 22, second temperature Sensor 32, thermoregulation mechanism 5, tonifying Qi interface 10 are arranged on multiple-pass joint 9；First pressure sensor 21, the first temperature Sensor 31 is arranged on gas density relay ontology 1.The first pressure sensor 21, second pressure sensor 22, One temperature sensor 31, second temperature sensor 32 are connected with intelligence control unit 7 respectively.First pressure sensor 21, second is pressed Force snesor 22, gas density relay ontology 1 are connected in gas circuit.

What is different from the first embodiment is that being that first pressure sensor 21, second is pressed respectively there are two the pressure sensors Force snesor 22；There are two the temperature sensors, is the first temperature sensor 31, second temperature sensor 32 respectively.This Embodiment provides multiple pressure sensors and temperature sensor, it is therefore an objective to: first pressure sensor 21 and second pressure sensor The pressure value that 22 monitorings obtain can be compared, and mutually verify；First temperature sensor 31 and second temperature sensor 32 are supervised The temperature value measured can be compared, and mutually verify；First pressure sensor 21 and the first temperature sensor 31 monitor The density value P1 arrived₂₀, obtained density value P2 is monitored with second pressure sensor 22 and second temperature sensor 32₂₀Between into Row compares, and mutually verifies；The density value Pe of the rated value of gas density relay ontology 1 can be even obtained with on-line testing₂₀, It is compared, mutually verifies between each other.

In addition, there are two the pressure sensors in the technology of the present invention, it is that first pressure sensor 21, second is pressed respectively Force snesor 22；There are two the temperature sensors, is the first temperature sensor 31, second temperature sensor 32 respectively.The One pressure sensor 21 and second pressure sensor 22 are separately positioned on the two sides of multiple-pass joint 9, or the both ends of valve 4 are arranged in. The technology of the present invention has safety protection function, specifically: 1) according to first pressure sensor 21 and the first temperature sensor 31 or When second pressure sensor 22 and second temperature sensor 32 monitor obtained density value lower than setting value, gas density relay With regard to no longer verifying automatically to gas density relay ontology 1, and issue bulletin signal.For example, working as the gas density of equipment When value is less than setting value, just do not verify.Only as the gas density value of equipment >=(locking pressure+0.02MPa), Cai Nengjin Row verification.The stateful instruction of docking point alarm.2) or in verification, valve 4 is closed at this time, according to second pressure sensor 22 and the When the density value that the monitoring of two temperature sensors 32 obtains is lower than setting value, gas density relay is just automatic no longer to gas density Relay ontology 1 is verified, and bulletin signal (gas leakage) is simultaneously emitted by.For example, the gas density value when equipment is less than setting value When (locking pressure+0.02MPa), just do not verify.Setting value can arbitrarily be set as needed.The gas density relay simultaneously Device also has the mutual of multiple pressure sensors, the mutual verification of temperature sensor and sensor and gas density relay Verification, it is ensured that gas density relay work is normal.I.e. first pressure sensor 21 and second pressure sensor 22 monitor It is compared between obtained pressure value, mutually verifies；First temperature sensor 31 and the monitoring of second temperature sensor 32 obtain Temperature value between be compared, mutually verify；First pressure sensor 21 and the monitoring of the first temperature sensor 31 obtain close Angle value P1₂₀, obtained density value P2 is monitored with second pressure sensor 22 and second temperature sensor 32₂₀Between be compared, Mutually verification；Even it can also verify to obtain the density value Pe of the rated value of gas density relay ontology 1₂₀, between each other into Row compares, and mutually verifies.

Example IV:

As shown in figure 5, a kind of gas density relay with online self checking function that the embodiment of the present invention four provides (or density monitoring device), further includes: valve 4；One end of the valve 4 is connected with electrical equipment 8, the other end of the valve 4 with The gas density relay ontology 1 is connected, and the valve 4 is connected with intelligence control unit 7；According to the checking time of setting or/ And checking command and gas density value situation or/and temperature value situation, allowing or/and can verify gas density relay It under the situation of device, such as can choose in winter, when electrical equipment gas pressure is lower；By intelligence control unit 7 on-line testing Contact point signal sampling unit 6 is adjusted to verification state, and under verification state, on-line testing contact point signal sampling unit 6 cuts off gas The contact of gas density relay ontology 1 is connected to intelligence control list by the control loop of the contact point signal of volume density relay ontology 1 Member；Control by intelligence control unit 7 to thermoregulation mechanism 5 increases the temperature of the gas of gas density relay, to setting After value (such as set-point temperature is 70 DEG C), valve 4 is closed by intelligence control unit 7；The temperature of the gas of gas density relay or Pressure drops to suitable rear (such as environment temperature, be 12 DEG C), then by control of the intelligence control unit 7 to thermoregulation mechanism 5, makes The temperature of gas density relay increases, and then the temperature of the temperature compensating element of density monitor increases (assuming that being increased to 45.6 DEG C), it allows for gas density relay ontology 1 and contact movement occurs, contact movement is adopted by on-line testing contact point signal Sample unit 6 is transmitted to intelligence control unit 7, and the pressure value, temperature value when intelligence control unit 7 is acted according to contact obtain gas density value, Or gas density value is directly obtained, it detects the contact point signal action value of gas density relay, completes gas density relay Contact point signal action value verifying work.

After the completion of all contact point signal verifying works, 7 opening valve 4 of intelligence control unit and intelligence control unit 7 turn off temperature Regulating mechanism 5.

Embodiment five:

As shown in fig. 6, a kind of gas density relay with online self checking function that the embodiment of the present invention five provides (or density monitoring device), by three gas density relay ontologies (11,12,13), three multiple-pass joints (91,92,93), three A thermoregulation mechanism (51,52,53), three on-line testing contact point signal sampling units (61,62,63) and an intelligence control unit 7, a gas density detection sensor 2 forms, and completes the on-line testing of the gas density relay.

Embodiment six:

As shown in fig. 7, a kind of gas density relay with online self checking function that the embodiment of the present invention six provides (or density monitoring device), by three gas density relay ontologies (11,12,13), three multiple-pass joints (91,92,93), three A thermoregulation mechanism (51,52,53), three on-line testing contact point signal sampling units (61,62,63), three gas densities Detection sensor (21,22,23) and an intelligence control unit 7 form, and complete the on-line testing of the gas density relay.

In conclusion a kind of gas density relay and its verification side with online self checking function provided by the invention Method, by gas circuit (pipeline can be passed through) coupling part, temperature regulation section point (or also containing pressure regulating part point), signal measurement control The compositions such as system part, major function are to the contact value of the gas density relay under environment temperature (when alarm/block action Pressure value) on-line testing measurement is carried out, and corresponding pressure value when being converted into 20 DEG C automatically, canbe used on line is to gas density relay The performance detection of contact (alarm and locking) value of device.Its gas density relay, pressure sensor, temperature sensor, temperature Regulating mechanism, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit, intelligence control unit installation site can be flexible Combination.Such as: gas density relay ontology, pressure sensor, temperature sensor, on-line testing contact point signal sampling unit, Intelligence control unit can be combined, integrated design, seperated can also design；It may be mounted on shell or multiple-pass joint On, it can also be linked together by connecting tube.Valve can be connected directly with electrical equipment, can also by Self-sealing valve or Tracheae connection.Pressure sensor, temperature sensor, on-line testing contact point signal sampling unit, intelligence control unit can be combined one It rises, integrated design；Pressure sensor, temperature sensor can be combined, integrated design；On-line testing contact point signal Sampling unit, intelligence control unit can be combined, integrated design.In short, structure is not restricted to one pattern.

It is into a single integrated structure that gas density relay with online self checking function is generally referred to as the design of its constituent element； And gas density detecting device is generally referred to as its constituent element and is designed to separate structure, flexibly forms.

Gas density relay with online self checking function, in high temperature, low temperature, room temperature, 20 DEG C of environment temperature verifications When density monitor contact, it is different that requirement, which can be, to be determined to its error, it specifically can be according to the requirement of temperature, according to phase Pass standard is implemented；Can be according to density monitor at different temperature, the different periods carries out the comparison of its error performance. That is different times, the comparison in same temperature ranges stated, the performance for density monitor of decisioing making.Ratio with history each period To, history and present comparison.It can also check UP to density monitor ontology.It when necessary, can be at any time to density relay Device contact point signal is verified；With gas density relay ontology, the electrical equipment monitored density value it is whether normal Determined.It can density value, gas density relay ontology, pressure sensor, temperature sensing to electrical equipment itself Device carries out normally and abnormal judgement and analysis, compares, so realize gas density monitoring to electrical equipment, gas density after The states such as electric appliance 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 , 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.In addition, for SF6 gas and Speech, the specific conversion method of SF6 gas pressure-temperature characteristic can be calculated according to Beattie-Bridgeman equation；For SF6 For mixed gas, SF6 mixture pressure-specific conversion method of temperature characterisitic can be according to Dalton's law (of partial pressures), BETTY BOOP- Bridgeman equation, The Ideal-Gas Equation are calculated.

The application structure characteristics of compact layout, rationally, each component has good antirust, shake-proof ability, firmly installs, using can It leans on.Connection, the dismounting of each pipeline of gas density relay are easily operated, and equipment and component facilitate maintenance.The application need not maintenance Personnel can complete the verifying work of gas density relay to scene, substantially increase the reliability of power grid, improve efficiency, It reduces costs.

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

1. a kind of gas density relay with online self checking function characterized by comprising gas density relay sheet Body, gas density detection sensor, multiple-pass joint, thermoregulation mechanism, on-line testing contact point signal sampling unit and intelligence control list Member；

The thermoregulation mechanism is the adjustable regulating mechanism of temperature, is configured as adjusting the gas density relay ontology The gradient of temperature of temperature compensating element makes the gas density relay ontology that contact point signal movement occur；

The on-line testing contact point signal sampling unit is directly or indirectly connected with the gas density relay ontology, quilt It is configured to sample the contact point signal generated when the contact of the gas density relay ontology acts；

Intelligence control unit, respectively with the gas density detection sensor, the thermoregulation mechanism and the on-line testing contact Signal sampling unit is connected, and is configured as completing the control of the thermoregulation mechanism, pressure value acquires and temperature value acquires, And/or the acquisition of gas density value, and the contact point signal action value and/or contact letter of the detection gas density relay ontology Number return value；

Wherein, the contact point signal includes alarm, and/or locking.

2. a kind of gas density detecting device with online self checking function characterized by comprising gas density relay Ontology, gas density detection sensor, multiple-pass joint, thermoregulation mechanism, on-line testing contact point signal sampling unit and intelligence control Unit；

Wherein, the contact point signal includes alarm, and/or locking.

3. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, special Sign is: 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；Alternatively,

The thermoregulation mechanism is arranged in the gas density relay body interior；Alternatively,

The thermoregulation mechanism is arranged in the gas density relay body exterior；Alternatively,

The gas density detection sensor, the thermoregulation mechanism, the on-line testing contact point signal sampling unit and institute Intelligence control unit is stated to be arranged on the gas density relay ontology；Alternatively,

The multiple-pass joint is arranged on the gas density relay ontology；Alternatively,

The thermoregulation mechanism is arranged on the multiple-pass joint；Alternatively,

The thermoregulation mechanism, the gas density detection sensor are arranged on the multiple-pass joint；Alternatively,

The on-line testing contact point signal sampling unit and the intelligence control unit are arranged on the multiple-pass joint.

4. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, special Sign is: the gas density relay ontology, the gas density detection sensor are integrated；Alternatively, the gas The telemetering type gas density relay that volume density relay ontology, the gas density detection sensor are integrated.

5. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, special Sign is: the gas density detection sensor is integrated；Alternatively, the gas density detection sensor is integration The gas density transmitter of structure.Preferably, the on-line testing contact point signal sampling unit, the intelligence control unit are arranged in institute It states in gas density transmitter.

6. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, special Sign is: the on-line testing contact point signal sampling unit and the intelligence control unit are set together.Preferably, the online school It tests contact point signal sampling unit and the intelligence control unit is sealed in a cavity or shell.

7. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, special Sign is: the gas density detection sensor includes at least one pressure sensor and at least one temperature sensor；Alternatively,

Using the density detection sensor of quartz tuning-fork technology.

8. gas density relay according to claim 7 or gas density detecting device, it is characterised in that: the pressure Sensor is installed in the gas circuit of the gas density relay ontology；

The temperature sensor is installed in the gas circuit of the gas density relay ontology or outside gas circuit or the gas density In relay ontology or the gas density relay sheet is external.

9. gas density relay according to claim 7 or gas density detecting device, it is characterised in that: the pressure Sensor includes but is not limited to relative pressure sensor and/or absolute pressure transducer.

10. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the intelligence control unit obtains the gas density value of the gas density detection sensor acquisition；Alternatively, the intelligence control Unit obtains the pressure value and temperature value of the gas density detection sensor acquisition, completes the gas density relay to institute The on-line monitoring of the gas density of the electrical equipment of monitoring.

11. gas density relay according to claim 10 or gas density detecting device, which is characterized in that the intelligence It controls unit and the gas density value, the averaging method is calculated using averaging method are as follows: in the time interval of setting, setting acquisition frequency N number of gas density value of the different time points all collected is carried out mean value calculation processing, obtains its gas density by rate Value；Alternatively,

Time interval, set temperature interval steps in setting, the N number of different temperatures collected in whole temperature ranges It is worth the corresponding density value and carries out mean value calculation processing, obtains its gas density value；Alternatively,

Time interval, setting pressure intervals step-length in setting, the N number of difference collected in whole pressure ranges Density value corresponding to pressure value carries out mean value calculation processing, obtains its gas density value；

Wherein, N is the positive integer more than or equal to 1.

12. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the intelligence control unit obtains gas density relay ontology when occurring contact point signal movement or switching, described The gas density value of gas density detection sensor acquisition, completes the on-line testing of the gas density relay；Alternatively,

It is close that 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 detection sensor acquisition are spent, and becomes corresponding 20 DEG C of pressure according to gas pressure-temperature Characteristic conversion Force value, i.e. gas density value, complete the on-line testing of the gas density relay.

13. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the gas density relay ontology with compare density value output signal, the comparison density value output signal with The intelligence control unit is connected；Alternatively,

The gas density relay ontology is with comparison pressure value output signal, the comparison pressure value output signal and the intelligence Control unit is connected.

14. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that, the thermoregulation mechanism is heating element；Alternatively,

The thermoregulation mechanism include heating element, heat preservation member, temperature controller, temperature detector, outside thermoregulation mechanism Shell；Alternatively,

The thermoregulation mechanism includes heating element and temperature controller；Alternatively,

The thermoregulation mechanism includes heating element, heating power adjuster and temperature controller；Alternatively,

The thermoregulation mechanism includes heating element, cooling module, power governor and temperature controller；Alternatively,

The thermoregulation mechanism includes heating element, heating power adjuster and constant temperature controller；Alternatively,

The thermoregulation mechanism includes heating element, controller, temperature detector；Alternatively,

The thermoregulation mechanism is heating element, and the heating element is arranged near temperature compensating element；Alternatively,

The thermoregulation mechanism is micro constant-temperature case；

Wherein, the quantity of the heating element be at least one, the heating element include but is not limited to silicon rubber heater, One of resistance wire, ribbon heater, electrical bar, air-heater, infrared heating device, semiconductor；

The temperature controller connects the heating element, for controlling the heating temperature of heating element, the temperature controller The including but not limited to controller, the frequency-variable controller, one in PLC controller that are combined of PID controller, PID and fuzzy control Kind.

15. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that, further includes: valve, one end of the valve are equipped with the connector being connected with electrical equipment, are connected to electrical equipment, institute The other end for stating valve is connected to the gas density relay ontology.

16. gas density relay according to claim 15 or gas density detecting device, it is characterised in that: the valve Also it is connected with the intelligence control unit, realizes turning off or on for the valve under the control of the intelligence control unit.

17. gas density relay according to claim 15 or gas density detecting device, it is characterised in that: the valve For motor-driven valve, or be solenoid valve, or be piezo electric valve, or be temperature controlled valve, or for using the production of intelligent memory material, adopt The new type of valve opened or closed with electric heating.

18. gas density relay according to claim 15 or gas density detecting device, it is characterised in that: described more Pass joint is equipped with third interface, and the third interface is equipped with the company docked with the electrical equipment that gas density relay is monitored Socket part, the valve are embedded in the interconnecting piece.

19. gas density relay according to claim 1 or gas density detecting device, which is characterized in that further include: Pressure regulating mechanism, the gas circuit of the pressure regulating mechanism are connected to the gas density relay ontology；The pressure is adjusted Mechanism is configured as adjusting the pressure lifting of the gas density relay ontology, and then cooperation or/and combination temperature adjust machine Structure makes the gas density relay ontology that contact point signal movement occur；The intelligence control unit and the pressure regulating mechanism phase Connection, completes the control of the pressure regulating mechanism；Alternatively,

Further include: heating device, the intelligence control unit are connected with the heating device；Alternatively,

It further include gas chamber and heating device, the gas chamber is connected with the gas density relay ontology, outside the gas chamber Portion is internal equipped with heating device, and the intelligence control unit is connected with the heating device.

20. gas density relay according to claim 19 or gas density detecting device, it is characterised in that: the pressure Power regulating mechanism is sealed in a cavity or shell.

21. gas density relay according to claim 19 or gas density detecting device, it is characterised in that: verification When, the pressure regulating mechanism is a sealed gas chamber, and the outside or inside of the sealed gas chamber is equipped with heating element, and/or system Cold element leads to the gas in the sealed gas chamber by heating the heating element, and/or freezing by the cooling module The temperature change of body, and then complete the pressure lifting of the gas density relay；Alternatively,

The pressure regulating mechanism is cavity open at one end, and the other end of the cavity is connected to the multiple-pass joint；The chamber There is piston in vivo, one end of the piston is connected with an adjusting rod, and the outer end of the adjusting rod connects driving part, the work The other end of plug protrudes into the opening, and in sealing contact with the inner wall of the cavity, and the driving part drives the adjusting Bar drives the piston to move in the cavity in turn；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 multiple-pass joint；Alternatively,

The pressure regulating mechanism is bellows, and one end of the bellows is connected to the multiple-pass joint, the bellows it is another It stretches under the driving of the driving part one end；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.

22. gas density relay according to claim 21 or gas density detecting device, it is characterised in that: the pressure Power regulating mechanism further includes heat preservation member, and the heat preservation member is set to the outside of the sealed gas chamber.

23. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that, the on-line testing contact point signal sampling unit samples the contact point signal of the gas density relay ontology full Foot:

The on-line testing contact point signal sampling unit has independent at least one set of sampling contact, can connect simultaneously at least one Point 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+locking 2 One of contact, alarm contact+locking contact+superpressure contact.

24. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the intelligence control unit has electric interfaces, and the electric interfaces complete test data storage and/or test data Export and/or test data printing, and/or data communication, and/or input analog quantity, digital information are carried out with host computer.

25. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the intelligence control unit further includes the communication module for realizing remote transmitting test data, and/or check results, institute The communication modes for stating communication module are wire communication or wireless communication mode.

26. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: being additionally provided with clock on the intelligence control unit, the clock be configurable for periodically being arranged the gas density after The checking time of electric appliance perhaps recording test time or record event time.

27. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that: the control of the intelligence control unit is by field control, and/or passes through Background control.

28. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that, further includes: for the display interface of human-computer interaction, it is connected with the intelligence control unit, the current school of real-time display Data are tested, and/or support data input.

29. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that, further includes: the micro- water sensor being connected respectively with the gas density relay ontology and the intelligence control unit, And/or the decomposition product sensor being connected respectively with the gas density relay ontology and the intelligence control unit.

30. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, Be characterized in that, the gas density relay ontology includes: shell, and be disposed in the housing pedestal, pressure detector, Temperature compensating element, at least one signal generator；

The first interface of the multiple-pass joint is connected with the pedestal；The on-line testing contact point signal sampling unit, with institute Signal generator is stated to be connected；

Wherein, the signal generator includes microswitch or magnetic-type electrical contact, and the gas density relay ontology passes through The signal generator output contact signal；The pressure detector includes Baden pipe or bellows；The temperature compensating element Using temperature-compensating plate or the gas of shell inner sealing.

31. gas density relay according to claim 30 or gas density detecting device, it is characterised in that: the gas Volume density relay ontology further includes indication mechanism, and the indication mechanism includes machine core, pointer, dial, and the machine core is fixed On the pedestal or in shell；The other end of the temperature compensating element also pass through connecting rod connect with the machine core or directly with The machine core connection；The pointer is installed on the machine core and is set to before the dial, and the pointer is in conjunction with the quarter Scale shows gas density value；And/or

The gas density relay ontology further includes indication mechanism, and the indication mechanism includes liquid crystal or/and charactron.

32. gas density relay according to claim 30 or gas density detecting device, it is characterised in that: the gas Volume density relay ontology or gas density detecting device further include contact resistance detection unit；The contact resistance detection unit It is connected with contact point signal or is directly connected with signal generator；Under the control of on-line testing contact point signal sampling unit, The contact point signal of gas density relay is isolated with its control loop, when the contact point signal of density monitor acts, and/ Or when being connected to the instruction of detection contact contact resistance, contact resistance detection unit is able to detect that connecing for gas density relay Point contact resistance value.

33. gas density relay according to claim 1 or gas density detecting device as claimed in claim 2, It is characterized in that: at least two gas density relay ontologies, at least two multiple-pass joints, at least two thermoregulation mechanisms, extremely Few two on-line testing contact point signal sampling units and an intelligence control unit, a gas density detection sensor, described in completion The on-line testing of gas density relay；Alternatively,

At least two gas density relay ontologies, at least two multiple-pass joints, at least two thermoregulation mechanisms, at least two On-line testing contact point signal sampling unit, at least two intelligence control units and a gas density detection sensor, complete the gas The on-line testing of volume density relay；Alternatively,

At least two gas density relay ontologies, at least two multiple-pass joints, at least two thermoregulation mechanisms, at least two On-line testing contact point signal sampling unit, at least two gas density detection sensors and an intelligence control unit, complete the gas The on-line testing of volume density relay.

34. a kind of method of calibration of gas density relay characterized by comprising

Gas density when normal operating conditions, in gas density relay or gas density detecting device monitoring electrical equipment Value；

Gas density relay or gas density detecting device are according to the checking time or/and checking command and gas of setting Density value situation or/and temperature value situation, allow or/and can be under the situation of check-up gas density electrical relay:

Control by intelligence control unit to thermoregulation mechanism increases the temperature of gas density relay, and then gas density The temperature of the temperature compensating element of relay increases so that contact movement occurs for gas density relay, contact movement by Line verification contact point signal sampling unit is transmitted to intelligence control unit, and the pressure value, temperature value when intelligence control unit is acted according to contact obtain To gas density value, or gas density value is directly obtained, detect the contact point signal action value of gas density relay, completes gas The verifying work of the contact point signal action value of volume density relay；

35. a kind of method of calibration of gas density relay according to claim 34 characterized by comprising

Gas density when normal operating conditions, in gas density relay or gas density detecting device monitoring electrical equipment Value, while gas density relay or gas density detecting device are online by gas density detection sensor and intelligence control unit Monitor the gas density value in electrical equipment；

On-line testing contact point signal sampling unit is adjusted to verification state by intelligence control unit, under verification state, online school The control loop for testing the contact point signal of contact point signal sampling unit cutting gas density relay, by gas density relay ontology Contact be connected to intelligence control unit；

Control by intelligence control unit to thermoregulation mechanism reduces the temperature of gas density relay, and then gas density The temperature of the temperature compensating element of relay reduces so that gas density relay occurs contact and resets, contact reset by Line verification contact point signal sampling unit is transmitted to intelligence control unit, and the pressure value, temperature value when intelligence control unit is resetted according to contact obtain To gas density value, or gas density value is directly obtained, detect the contact point signal return value of gas density relay, completes gas The verifying work of the contact point signal return value of volume density relay；

After the completion of all contact point signal verifying works, intelligence control unit turns off the heating element of thermoregulation mechanism, and will be Line verification contact point signal sampling unit is adjusted to working condition, and the control loop of the contact point signal of gas density relay restores fortune Row normal operating conditions.

36. a kind of method of calibration of gas density relay according to claim 34, which is characterized in that the gas is close It spends relay or gas density detecting device further includes pressure regulating mechanism and valve, the gas circuit and gas of the pressure regulating mechanism The gas circuit of density monitor ontology is connected, and one end of the valve is equipped with the connector being connected with electrical equipment, the valve The other end is connected with the gas circuit of gas density relay ontology；The described method includes:

Valve is closed by intelligence control unit；

By intelligence control unit driving pressure regulating mechanism, decline gas pressure slowly, and by intelligence control unit to temperature tune The control for saving mechanism, increases the temperature of gas density relay, and then the temperature of the temperature compensating element of gas density relay Degree increases, so that contact movement occurs for gas density relay, contact movement is passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is acted according to contact obtain gas density value, or directly obtain gas Volume density value detects the contact point signal action value of gas density relay, and the contact point signal for completing gas density relay is dynamic The verifying work of work value；

After the completion of all contact point signal verifying works, intelligence control unit opening valve and intelligence control unit turn off temperature adjuster The heating element of structure.

37. a kind of method of calibration of gas density relay according to claim 34, which is characterized in that the gas is close It spends relay or gas density detecting device further includes pressure regulating mechanism and valve, the gas circuit and gas of the pressure regulating mechanism The gas circuit of density monitor ontology is connected, and one end of the valve is equipped with the connector being connected with electrical equipment, the valve The other end is connected with the gas circuit of gas density relay ontology；The described method includes:

Valve is closed by intelligence control unit；

Control by intelligence control unit to thermoregulation mechanism increases the temperature of gas density relay, and then gas density The temperature of the temperature compensating element of relay increases, and by intelligence control unit driving pressure regulating mechanism, keeps gas pressure slow Slow decline, so that contact movement occurs for gas density relay, contact movement is passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is acted according to contact obtain gas density value, or directly obtain gas Volume density value detects the contact point signal action value of gas density relay, and the contact point signal for completing gas density relay is dynamic The verifying work of work value；

Control by intelligence control unit to thermoregulation mechanism reduces the temperature of gas density relay, and then gas density The temperature of the temperature compensating element of relay reduces, and by intelligence control unit driving pressure regulating mechanism, keeps gas pressure slow Slow to rise, so that gas density relay occurs contact and resets, contact is resetted to be passed by on-line testing contact point signal sampling unit It is delivered to intelligence control unit, the pressure value, temperature value when intelligence control unit is resetted according to contact obtain gas density value, or directly obtain gas Volume density value, detects the contact point signal return value of gas density relay, and the contact point signal for completing gas density relay returns Return the verifying work of value；

After the completion of all contact point signal verifying works, intelligence control unit opening valve and intelligence control unit turn off temperature adjuster The heating element of structure, and on-line testing contact point signal sampling unit is adjusted to working condition, the contact of gas density relay The control loop of signal is resumed operation normal operating conditions.

38. a kind of method of calibration of gas density relay according to claim 34, which is characterized in that the gas is close It spends relay or gas density detecting device further includes heating device and valve, the heating device is connected with the intelligence control unit It connects, one end of the valve is equipped with the connector being connected with electrical equipment, the other end and gas density relay sheet of the valve The gas circuit of body is connected；The described method includes:

The heating device is heated by intelligence control unit, leads to the indoor gas of gas between the valve and gas density relay Temperature change valve is closed by intelligence control unit, then the heating device is turned off by intelligence control unit to after setting value；

After the temperature or pressure of gas chamber drop to properly, then by control of the intelligence control unit to thermoregulation mechanism, keep gas close Spend relay temperature increase, and then the temperature compensating element of gas density relay temperature increase so that gas density after Contact movement occurs for electric appliance, and contact movement is transmitted to intelligence control unit, intelligence control unit by on-line testing contact point signal sampling unit Pressure value, temperature value when being acted according to contact obtain gas density value, or directly obtain gas density value, detect that gas is close The contact point signal action value for spending relay, 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 and intelligence control unit turn off temperature adjuster Structure.

39. a kind of method of calibration of gas density relay according to claim 34, which is characterized in that the gas is close Degree relay or gas density detecting device further include valve, gas chamber and heating device, the gas chamber and the gas density relay Device ontology is connected, and the heating device is set to the outside or inside of the gas chamber, and one end of the valve is equipped with and electrical equipment The other end of the connector being connected, the valve is connected with the gas circuit of gas density relay ontology；The described method includes:

The heating device is heated by intelligence control unit, leads to the temperature change of the indoor gas of the gas, to after setting value, is led to It crosses intelligence control unit and closes valve, then the heating device is turned off by intelligence control unit；