CN110514996A - A kind of remodeling method of gas density relay - Google Patents

A kind of remodeling method of gas density relay Download PDF

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Publication number
CN110514996A
CN110514996A CN201910830232.2A CN201910830232A CN110514996A CN 110514996 A CN110514996 A CN 110514996A CN 201910830232 A CN201910830232 A CN 201910830232A CN 110514996 A CN110514996 A CN 110514996A
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CN
China
Prior art keywords
gas density
density relay
gas
pressure
ontology
Prior art date
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Granted
Application number
CN201910830232.2A
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Chinese (zh)
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CN110514996B (en
Inventor
夏铁新
贺兵
常敏
郭正操
廖海明
金海勇
王恩林
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Shanghai Leyan Electric Co Ltd
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Shanghai Leyan Electric Co Ltd
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Filing date
Publication date
Application filed by Shanghai Leyan Electric Co Ltd filed Critical Shanghai Leyan Electric Co Ltd
Priority to CN201910830232.2A priority Critical patent/CN110514996B/en
Publication of CN110514996A publication Critical patent/CN110514996A/en
Priority to PCT/CN2020/111251 priority patent/WO2021043039A1/en
Priority to EP20861565.8A priority patent/EP4027155A4/en
Priority to US17/640,778 priority patent/US20220336170A1/en
Priority to JP2022515120A priority patent/JP2022548538A/en
Application granted granted Critical
Publication of CN110514996B publication Critical patent/CN110514996B/en
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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/36Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3271Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
    • G01R31/3275Fault detection or status indication
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00Control of fluid pressure
    • G05D16/20Control of fluid pressure characterised by the use of electric means
    • G05D16/2006Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/24Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26Details
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00Switches operated by change of a physical condition
    • H01H35/24Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/26Details
    • H01H35/28Compensation for variation of ambient pressure or temperature
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G01N2009/006Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork

Abstract

The application provides a kind of remodeling method of gas density relay, for high pressure, middle voltage electrical equipment, gas density detection sensor, multiple-pass joint, pressure regulating mechanism, on-line testing contact point signal sampling unit and intelligence control unit are added on traditional gas density relay ontology.The lifting of pressure is adjusted by pressure regulating mechanism, 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, it detects the alarm of gas density relay ontology and/or is latched contact point signal action value and/or return value, the verifying work of gas density relay can be completed to scene without service personnel, substantially increase the reliability of power grid, efficiency is improved, is reduced costs.

Description

A kind of remodeling method of gas density relay
Technical field
The present invention relates to technical field of electric power, and in particular to a kind of to apply the gas in high pressure, middle voltage electrical equipment close Spend the remodeling method of relay.
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 (such as computer terminal) in time and realizes on-line monitoring.
Periodic inspection is carried out to the gas density relay on electrical equipment, is to prevent trouble before it happens, ensures electrical equipment peace The requisite measure of full reliability service." electric power preventive trial regulation " and " prevent 25 Xiang Chong of power generation major accident Point requires " it requires and regularly gas density relay is verified.From the point of view of practical operation situation, to gas density after It is to ensure one of power equipment safety, necessary means of reliability service that electric appliance, which carries out periodic check,.Therefore, at present gas density after The verification of electric appliance has been paid much attention to and has been popularized in electric system, and each power supply company, power plant, large factories and mines enterprises are all real It applies.And power supply company, power plant, large factories and mines enterprises are to complete the field-checking detection work of gas density relay to need to be equipped with The SF6 gas of tester, equipment vehicle and high value.Including power failure operating loss when detection, rough calculation, each The testing cost of high voltage switchyard shared every year about arrives hundreds of thousands member or so tens of thousands of.In addition, testing staff's field-checking is such as Fruit non-standard operation, there is also security risks.For this purpose, very necessary in existing gas density self checking gas density relay It in the online self checking gas density relay of device, especially gas density or system, is innovated, makes to realize that gas density is online Also with the verifying function of gas density relay in the gas density relay of monitoring or the monitoring system of composition, and then complete The periodic check of (mechanical) gas density relay works, and without service personnel to scene, greatly improves work efficiency, and drops Low cost.
Summary of the invention
The purpose of the present invention is to provide a kind of remodeling methods of gas density relay, to solve in above-mentioned technical background The problem of proposition.
To achieve the above object, the invention adopts the following technical scheme:
A kind of remodeling method of gas density relay, comprising:
By gas density detection sensor, it is connected to gas density relay ontology;
By the gas circuit of the gas density relay ontology, the first interface of multiple-pass joint is connected;
By the gas circuit of pressure regulating mechanism, the second interface of the multiple-pass joint is connected, the first interface and described the Two orifices, so that the gas circuit of the pressure regulating mechanism is connected to the gas density relay ontology;The pressure Regulating mechanism adjusts the pressure lifting of the gas density relay ontology, makes the gas density relay ontology that contact occur Signalizing activity;
By on-line testing contact point signal sampling unit, directly or indirectly it is connected with the gas density relay ontology, The contact point signal of the gas density relay ontology at a temperature of the on-line testing contact point signal sampling unit sampling environment;
By intelligence control unit, respectively with the gas density detection sensor, the pressure regulating mechanism and the online school Contact point signal sampling unit is tested to be connected, complete the pressure regulating mechanism control, pressure value acquisition and temperature value acquisition, 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.
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, pressure regulating mechanism setting the gas density after On electric appliance ontology;Alternatively, the gas density detection sensor, the pressure regulating mechanism, the on-line testing contact point signal Sampling unit and the intelligence control unit are arranged on the gas density relay ontology;Alternatively, the multiple-pass joint setting exists On the gas density relay ontology;Alternatively, the multiple-pass joint is arranged on the pressure regulating mechanism.
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 the gas density transmitter being made of pressure sensor and temperature sensor;Alternatively,
Using the density detection sensor of quartz tuning-fork technology.
It is highly preferred that the pressure sensor is installed in the gas circuit of the gas density relay ontology.
It is highly preferred that the temperature sensor is installed in the gas circuit of the gas density relay ontology or outside gas circuit, Or in the gas density relay ontology or the gas density relay sheet is external.
It is highly preferred that 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 Degree sensor can be thermocouple, thermistor, semiconductor-type;It can be with contact and contactless;It can be thermal resistance and heat Galvanic couple.
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:
PAbsolute pressure=PRelative pressure+PStandard 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, the corresponding density value of N number of different temperatures value collected in whole temperature ranges is carried out mean value calculation processing, is obtained Its gas density value;Alternatively, setting time interval, setting pressure intervals step-length, whole pressure ranges in adopt Collect the corresponding density value of obtained N number of different pressures value and carry out mean value calculation processing, obtains its gas density value;Wherein, N is Positive integer more than or equal to 1.
Preferably, the 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 remodeling method of a kind of gas density relay, further includes:
One end of valve is connected with electrical equipment, by the other end of the valve and the pressure regulating mechanism, the gas The connection of volume density relay ontology.
It is highly preferred that the valve is also connected with the intelligence control unit, make the valve in the control of the intelligence control unit Lower realization turns off or on.
It is highly preferred that the temperature 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 remodeling method of gas density relay, further includes:
Self-sealing valve is installed between the multiple-pass joint and the valve;It is connect alternatively, the valve is installed on the multi-pass Between head and Self-sealing valve.
Preferably, the pressure regulating mechanism is sealed in a cavity or shell.
Preferably, when verification, the pressure regulating mechanism is a sealed gas chamber, and the outside or inside of the sealed gas chamber is set There are heating element, and/or cooling module, by heating the heating element, and/or being freezed by the cooling module, causes The temperature change of gas in the sealed gas chamber, and then complete the pressure lifting of the gas density relay.
It is highly preferred that the heating element, and/or the cooling module are semiconductor.
It is highly preferred that the pressure regulating mechanism further includes heat preservation member, the heat preservation member is set to the outer of the sealed gas chamber Face.
Preferably, when verification, the pressure regulating mechanism is cavity open at one end, and the other end of the cavity is connected to institute State multiple-pass joint or the gas density relay ontology;There is piston in the cavity, one end of the piston is connected with one Adjusting rod, the outer end of the adjusting rod connect driving part, and the other end of the piston protrudes into the opening, and with the chamber The inner wall of body is in sealing contact, and the driving part drives the adjusting rod and then the piston is driven to move in the cavity.
Preferably, when verification, the pressure regulating mechanism is a sealed gas chamber, and the inside of the sealed gas chamber, which is equipped with, lives Plug, the inner wall of the piston and the sealed gas chamber is in sealing contact, and the outside of the sealed gas chamber is equipped with driving part, the drive Dynamic component pushes the piston to move in the cavity by electromagnetic force.
Preferably, the pressure regulating mechanism is the air bag that one end connects driving part, and the air bag is in the driving portion The variation of generating body product, the air bag are connected to the multiple-pass joint or the gas density relay ontology under the driving of part.
Preferably, the pressure regulating mechanism is bellows, and one end of the bellows is connected to the multiple-pass joint or institute Gas density relay ontology is stated, the other end of the bellows stretches under the driving of driving part.
The driving part in above-mentioned pressure-regulating device includes but is not limited to magnetic force, motor (variable-frequency motor or stepping Motor), reciprocating mechanism, Carnot cycle mechanism, one of pneumatic element.
Preferably, the pressure regulating mechanism is a vent valve.
It is highly preferred that the pressure regulating mechanism further includes the flow valve for controlling gas release flow.
It is highly preferred that the vent valve be solenoid valve or motor-driven valve or it is other electricity or that realizes by way of gas put Air valve.
Preferably, the pressure regulating mechanism is a compressor.
Preferably, the pressure regulating mechanism is a pump.
It is highly preferred that the pump including but not limited to makes one of press pump, booster pump, electric air pump, Electromagnetic air pump.
Preferably, contact point signal of the on-line testing contact point signal sampling unit to the gas density relay ontology Sampling meets: there are the on-line testing contact point signal sampling unit independent at least two groups to sample contact, can be simultaneously at least Two contacts are automatically performed verification, and continuously measure, need not replace contact or reselect contact;Wherein,
The contact including but not limited to alarm contact, alarm contact+locking contact, alarm contact+1 contact of locking+are closed Lock one of 2 contacts, alarm contact+locking contact+superpressure contact.
Preferably, contact point signal of the on-line testing contact point signal sampling unit to the gas density relay ontology The test voltage of action value or its switching value is not less than 24V, i.e., in verification, applies between contact point signal respective terminal not low In 24V voltage.
Preferably, the intelligence control unit 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 the improved gas density relay Support gas density monitor inputs, The essential information include but is not limited to one of factory number, required precision, nominal parameter, manufactory, running position or It 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, the remodeling method of a kind of gas density relay, further includes: display circle of human-computer interaction will be used for Face is connected with the intelligence control unit, the current verification data of real-time display, and supports data input.
Preferably, the remodeling method of a kind of gas density relay, further includes: by micro- water sensor respectively with it is described Gas density relay ontology is connected with the intelligence control unit.
It is highly preferred that a kind of remodeling method of gas density relay, further includes: by gas circulation mechanism respectively with The gas density relay ontology is connected with the intelligence control unit, and the gas circulation mechanism includes capillary, seal chamber Room and heating element.
Further, micro- water sensor can be installed on the sealed chamber of the gas circulation mechanism, in capillary, Capillary exit, extracapillary.
Preferably, the remodeling method of a kind of gas density relay, further includes: by decomposition product sensor respectively with institute Gas density relay ontology is stated to be connected with the intelligence control unit.
Preferably, the remodeling method of a kind of gas density relay, further includes: in the gas density relay sheet Body, and/or the gas density detection sensor, and/or the pressure regulating mechanism, and/or the on-line testing contact letter Camera of the installation for monitoring on number sampling unit, and/or the intelligence control unit.
Preferably, the remodeling method of a kind of gas density relay, further includes: set on the pressure regulating mechanism Set tonifying Qi interface;Alternatively, tonifying Qi interface is arranged on the electrical equipment;It is connect alternatively, tonifying Qi is arranged on the multiple-pass joint Mouthful;Alternatively, tonifying Qi interface is arranged on the gas density relay ontology.
Preferably, the gas density relay ontology includes: shell, and be disposed in the housing pedestal, end seat, Pressure detector, temperature compensating element, several signal generators;One end of the pressure detector is fixed on the pedestal simultaneously In communication, the other end of the pressure detector is connected by the end seat with one end of the temperature compensating element, institute The other end for stating temperature compensating element is equipped with crossbeam, and the crossbeam, which is equipped with, to be pushed the signal generator, sends out the signal The contact of raw device or the regulating part of disconnection;
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-compensating member of the gas density relay is arranged at least one described temperature sensor Part is nearby or setting is on temperature compensating element, or is integrated in the temperature compensating element.Preferably, at least one institute State the one end of pressure detector close to temperature compensating element that the gas density relay is arranged in temperature sensor.
It is highly preferred that a kind of remodeling method of gas density relay, further includes: by the first of the multiple-pass joint Interface is connected with the pedestal;The on-line testing contact point signal sampling unit is connected with the signal generator.
It is highly preferred that the gas density relay ontology further includes machine core, pointer, dial, the machine core is fixed on On the pedestal;The other end of the temperature compensating element also passes through connecting rod and connect with the machine core or directly connect with the machine core It connects;The pointer is installed on the machine core and is set to before the dial, and the pointer shows gas in conjunction with the dial Volume density value.
Further, the gas density relay ontology further includes the digital device or liquid crystal device that there is indicating value to show Part.
It is highly preferred that the gas density relay ontology or intelligence control unit further include contact resistance detection unit;It is described Contact resistance detection unit is connected with contact point signal or is directly connected with signal generator;It is adopted in on-line testing contact point signal Under the control of sample unit, the contact point signal of gas density relay is isolated with its control loop, in connecing for gas density relay When point signal acts, and/or when being connected to the instruction of detection contact contact resistance, contact resistance detection unit is able to detect To the contact contact resistance value of gas density relay.
Other places such as on-line testing contact point signal sampling unit can also be arranged in the contact resistance detection unit, can With adaptation to local conditions, flexible setting.
Compared with prior art, technical solution of the present invention has the advantages that
A kind of remodeling method of gas density relay is provided, high pressure, middle voltage electrical equipment are used for, it is close in traditional gas Gas density detection sensor, multiple-pass joint, pressure regulating mechanism, on-line testing contact point signal is added on degree relay ontology to adopt Sample unit and intelligence control unit.The lifting that pressure is adjusted by pressure regulating mechanism, so that gas density relay ontology connects Point movement, contact movement are transmitted to intelligence control unit by on-line testing contact point signal sampling unit, and intelligence control unit is dynamic according to contact Density value when making detects the alarm of gas density relay ontology and/or is latched contact point signal action value and/or return Value can complete the verifying work of gas density relay to scene without service personnel, substantially increase the reliability of power grid, Efficiency is improved, is reduced costs, the non-maintaining of gas density relay may be implemented.A kind of gas density of the present invention Relay refers to the integrated gas density monitor with on-line testing function or has gas density relay on-line testing The gas density detecting device etc. of function.Entire checking procedure realizes SF simultaneously6Gas zero-emission, meet regulations and wants It asks.
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 of embodiment one;
A kind of structural schematic diagram of gas density relay ontology of Fig. 2 the application preferred embodiment;
Fig. 3 is the structural schematic diagram of the gas density relay of embodiment two;
Fig. 4 is the structural schematic diagram of the gas density relay of embodiment three;
Fig. 5 is the structural schematic diagram of the gas density relay of example IV;
Fig. 6 is the structural schematic diagram of the gas density relay of embodiment five;
Fig. 7 is the structural schematic diagram of the gas density relay of embodiment six;
Fig. 8 is the structural schematic diagram of the gas density relay of embodiment seven;
Fig. 9 is the structural schematic diagram of the gas density relay of embodiment eight;
Figure 10 is the structural schematic diagram of the gas density relay of embodiment nine;
Figure 11 is the structural schematic diagram of the gas density relay of embodiment ten.
Specific embodiment
The present invention provides a kind of remodeling method of gas density relay, to make the purpose of the present invention, technical solution and effect Fruit is clearer, clear, referring to the drawings and gives an actual example that the present invention is described in more detail.It should be appreciated that this place is retouched It states that specific examples are only used to explain the present invention, is not intended to limit the present invention.
A kind of remodeling method of gas density relay, comprising: close with gas by gas density detection sensor (2,3) Relay ontology 1 is spent to be connected to;By the gas circuit of the gas density relay ontology 1, the first interface of multiple-pass joint 9 is connected;It will The gas circuit of pressure regulating mechanism 5, connects the second interface of the multiple-pass joint 9, and the first interface and the second interface connect It is logical, so that the gas circuit of the pressure regulating mechanism 5 is connected to the gas density relay ontology 1;The pressure adjusts machine Structure 5 adjusts the pressure lifting of the gas density relay ontology 1, makes the gas density relay ontology 1 that contact letter occur Number movement;By on-line testing contact point signal sampling unit 6, it is connected with the gas density relay ontology 1, the online school Test the contact point signal that contact point signal sampling unit 6 samples the gas density relay ontology 1 at a temperature of environment;By intelligence control unit 7, it is adopted respectively with the gas density detection sensor (2,3), the pressure regulating mechanism 5 and the on-line testing contact point signal Sample unit 6 is connected, and control, pressure value acquisition and temperature value acquisition, and/or the gas for completing the pressure regulating mechanism 5 are close Angle value acquisition, and the contact point signal action value and/or contact point signal return value of the detection gas density relay ontology 1; One end of valve 4 is connected with electrical equipment, by the other end of the valve 4 and the pressure regulating mechanism 5, the gas density Relay ontology 1 is connected to;Wherein, the contact point signal includes alarm, and/or locking.
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, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9 and tonifying Qi interface 10.The gas density relay ontology 1, valve 4, Pressure sensor 2, pressure regulating mechanism 5 and tonifying Qi interface 10 are arranged on multiple-pass joint 9.Specifically, one end of the valve 4 is close Envelope is connected on electrical equipment, and the other end of the valve 4 is connected by multiple-pass joint 9 with gas density relay ontology 1;Institute Pressure sensor 2 is stated to be connected in gas circuit with gas density relay ontology 1 by multiple-pass joint 9;The pressure adjusts machine Structure 5 is connected by multiple-pass joint 9 with gas density relay ontology 1;On-line testing contact point signal sampling unit 6 respectively with gas Volume density relay ontology 1 is connected with intelligence control unit 7;The valve 4, pressure sensor 2, temperature sensor 3 and pressure are adjusted Mechanism 5 is connected with intelligence control unit 7 respectively;The tonifying Qi interface 10 is connected with the multiple-pass joint 9.
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 relay, numeric type gas density relay (for example, by using pressure sensor+temperature sensor, automatically controlled relay, mend by software Repay realization), the gas density relay of mechanical and digital mating type;With instruction density monitor (density that pointer is shown after The density monitor of electric appliance or digital-scroll technique, liquid crystal display density monitor), without density monitor (the i.e. density of instruction Switch);SF6 gas density is relay, SF6 mixed gas density monitor, N2 gas density relay, other gas densities after Electric appliance 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.
A variety of kinds of drive can be used in the control of valve 4, such as manually, electrically, surge, pneumatically, turbine, electromagnetic driven, electromagnetic liquid Dynamic, electro-hydraulic dynamic, air-or liquid-operated, spur gear, umbrella tooth wheel drive etc.;It can be in the effect of pressure, temperature or other forms transducing signal Under, it is acted by scheduled requirement, or do not depend on transducing signal and simply opened or closed, valve is by driving or certainly Motivation structure goes up and down opening and closing element, slides, swing or rotary motion, to change the size of its flow area to realize its control Function.The valve 4 can be automatic valve class, power drive valve class and hand-operated valve class by driving method.And automatic valve may include: Electromagnetic drive, electromagnetism-hydraulic-driven, electro-hydraulic driving, turbine drives, commutating tooth wheel drive, umbrella tooth wheel drive, pneumatic actuation, liquid Press driving, gas-hydraulic-driven, electric drive, motor (motor) driving.The valve can be with automatic or manual, semi-automatic.Verification Process, which can be, to be automatically performed, and can also pass through the semi-automatic completion of hand fit.Valve is by Self-sealing valve, hand-operated valve or does not tear open It unloads valve and electrical equipment direct or indirect connection, integration or separates to connect.Valve is as needed, can be with open type or normally closed Type.The valve is one-way type or two-way type.In short, opening or closing gas circuit by electrically-controlled valve realization.And the side that electrically-controlled valve uses Formula may is that solenoid valve, electric-controlled ball valve, motor-driven valve, electronically controlled proportional valve etc..
The pressure regulating mechanism 5 of the present embodiment is cavity open at one end, has piston 51, the piston 51 in the cavity Equipped with sealing ring 510, one end of the piston 51 is connected with an adjusting rod, and the outer end of the adjusting rod connects driving part 52, the other end of the piston 51 protrudes into the opening, and is in contact with the inner wall of the cavity, and the driving part 52 drives It moves the adjusting rod and then the piston 51 is driven to move in the cavity.The driving part 52 includes but is not limited to magnetic One of power, motor (variable-frequency motor or stepper motor), reciprocating mechanism, Carnot cycle mechanism, pneumatic element.
The 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: control, the pressure adjusting to valve 4 are completed by intelligence control unit 7 The control and signal acquisition of mechanism 5.It realizes: when being able to detect that the contact point signal of gas density relay ontology 1 acts Pressure value and temperature value, pressure value P when being converted into corresponding 20 DEG C20(density value), can detect gas density after The contact action value P of electric appliance ontology 1D20, complete the verifying work of gas density relay ontology 1.Alternatively, can directly detect Density value P when being acted to the contact point signal of gas density relay ontology 1D20, complete gas density relay ontology 1 Verifying work.
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, record event can be inputted. The intelligence control unit 7 further includes communication module, realizes remote transmitting test data and/or check results etc. by communication module Information;When the rated pressure value output signal of the gas density relay ontology 1, intelligence control unit 7 acquires at that time simultaneously Density value, complete gas density relay ontology 1 rated pressure value verification.Meanwhile completing gas density relay ontology 1 Pressure detector 103 and pressure sensor 2 mutual verification;Or complete gas density relay ontology 1 and gas density The mutual verification of detection sensor (2,3) is realized non-maintaining.
Gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, online school Testing between contact point signal sampling unit 6, intelligence control unit 7 and multiple-pass joint 9 can according to need carry out flexible setting.Such as gas Together with density monitor ontology 1, pressure sensor 2 can be set with temperature sensor 3;Or valve 4 and pressure regulating mechanism 5 It can be set together.In short, the setting between them can flexible permutation and combination.
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..
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 of the multiple-pass joint 9 connects Mouth is connected with the pedestal 102;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 to verify density monitor 1, at this time if gas density value P20The safety check density value P of >=settingS;Gas density relay issues instruction, i.e., closes valve 4 by intelligence control unit 7, make Gas density relay ontology 1 is obtained to separate in gas circuit with electrical equipment.Then, intelligence control unit 7 disconnects gas density relay The control loop of ontology 1, so that will not influence the safe operation of electrical equipment when on-line testing gas density relay ontology 1, Alarm signal or lock-in control circuit will not be accidentally sent out in verification.Because gas density relay is before starting verification, Through carrying out gas density value P20The safety check density value P of >=settingSMonitoring and judgement, the gas of electrical equipment is in safety In range of operation, moreover gas leakage is a slow process, it is ensured that is safe when verification.Meanwhile intelligence control unit 7 is connected to The contact sample circuit of gas density relay ontology 1, then, intelligence control unit 7 control the driving part 52 of pressure regulating mechanism 5 (can mainly use motor (motor) and gear to realize, mode is various, flexible), and then adjust the work of pressure regulating mechanism 5 Plug 51, so that volume change occurs by the seal cavity that piston 51, gas density relay ontology 1, valve 4 etc. form, gas is close The pressure for spending the gas of relay ontology 1 gradually declines, so that contact movement occurs for density monitor 1, contact movement passes through On-line testing contact point signal sampling unit 6 uploads to intelligence control unit 7, the pressure value that intelligence control unit 7 measures when acting according to contact And temperature value, pressure value P when becoming 20 DEG C corresponding by weight of gas characteristic20(density value), so that it may detect that gas is close Spend the contact action value P of relay ontology 1D20, dynamic to the alarm of gas density relay ontology 1 and/or the contact of block signal After work value all detected, then by the motor (motor or variable-frequency motor) of the control pressure regulating mechanism 5 of intelligence control unit 7, adjust The piston 51 for saving pressure regulating mechanism 5, gradually rises the pressure of the gas of gas density relay ontology 1, and gas is arrived in test The return value of the alarm of density monitor ontology 1 and/locking contact point signal.It verifies repeatedly repeatedly (such as 2~3 times), so After calculate its average value, this completes the verifying works of gas density relay ontology 1.Then, intelligence control unit 7 disconnects gas The contact sample circuit of volume density relay ontology 1, at this time the contact of gas density relay ontology 1 just with intelligence control unit 7 not It is connected.Meanwhile by 7 opening valve 4 of intelligence control unit so that gas density relay ontology 1 in gas circuit with electrical equipment phase Connection.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, specifically can be with: 1) gas density relay can bulletin on the spot, such as by indicator light, The display such as digital or liquid crystal;2) or gas density relay can be implemented to upload by online teletransmission communication modes, such as can be with Upload to the backstage of on-line monitoring system;3) or by wirelessly uploading, specific terminal is uploaded to, such as can wirelessly upload hand Machine;4) it or by other approach uploads;5) it or abnormal results by alarm signal line or dedicated signal lines uploads;6) on individually It passes, or bundlees and upload with other signals.In short, gas density relay completes the on-line testing work of gas density relay Afterwards, if any exception, alarm can be issued automatically, can upload to distal end, or can be sent on specified receiver, such as send out It is sent to mobile phone.Alternatively, after the verifying work of gas density relay completion gas density relay, if any exception, intelligence control unit 7 Distal end (monitoring room, background monitoring platform etc.) can be uploaded by the alarm contact point signal of gas density relay ontology 1, and Bulletin can also be shown on the spot.The gas density relay on-line testing of simple version, can have verification abnormal result to pass through Alarm signal line uploads.It can be uploaded with certain rule, such as when exception, in an alarm contact contact in parallel, be had Regularly open and close can obtain situation by parsing;Or it is uploaded by independent checking signal line.It specifically can be with state Good upload or problematic upload can also be monitored on-line by teletransmission density and be uploaded, or check results by individually verifying Signal wire uploads, or by showing on the spot, alarms, or by wirelessly uploading on the spot, network and upload with smart phone.Its communication party Formula be it is wired or wireless, wired communication modes 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 be 2G/3G/4G/5G Deng, WIFI, bluetooth, Lora, Lorawan, Zigbee, infrared, ultrasonic wave, sound wave, satellite, light wave, quantum communications, sonar, biography 5G/NB-IOT communication module (such as NB-IOT) built in sensor.In short, gas can be fully ensured that with multiple form, multiple combinations The unfailing performance of density monitor.
Gas density relay has safety protection function, and when particularly as being less than setting value, gas density relay is just Automatically on-line testing no longer is carried out to density monitor, and issues bulletin signal.For example, being set when the gas density value of equipment is less than Definite value PSWhen, just do not verify.Such as: only as the gas density value of equipment >=(alarm pressure value+0.02MPa), ability Carry out on-line testing.
Gas density relay can carry out on-line testing according to the time of setting, can also be according to the temperature (example of setting Such as limit high temperature, high temperature, limit low temperature, low temperature, room temperature, 20 degree) carry out on-line testing.High temperature, low temperature, room temperature, 20 DEG C of rings When border temperature online verifies, error determines to require to be different, such as when 20 DEG C of environment temperature verifications, can be according to gas The required precision of density monitor is 1.0 grades or 1.6 grades, and when high temperature can be 2.5 grades.Specifically can according to the requirement of temperature, Implement according to relevant criterion.Such as according to 4.8 temperature in DL/T 259 " sulfur hexafluoride gas density relay verification regulation " Spend compensation performance 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 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 needing to test.Meanwhile gas density after Electric appliance can also monitor the gas density value and/or pressure value and/or temperature value of electrical equipment on-line, and upload to target and set It is standby to realize on-line monitoring.
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, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, Self-sealing valve 11.One end of the Self-sealing valve 11 is close Envelope is connected on electrical equipment, and the other end of the Self-sealing valve 11 is connected with valve 4;One end of the valve 4 is sealedly attached to certainly The upper of valve 11 is sealed, the other end of the valve 4 is connected with multiple-pass joint 9.Gas density relay ontology 1 is mounted on multiple-pass joint On 9;The pressure sensor 2, temperature sensor 3 are arranged on gas density relay ontology 1, and pressure sensor 2 is in gas circuit It is upper to be connected with gas density relay ontology 1;The pressure regulating mechanism 5 is mounted on multiple-pass joint 9, pressure regulating mechanism 5 are connected with gas density relay ontology 1;On-line testing contact point signal sampling unit 6 and intelligence control unit 7 are set together. The pressure sensor 2, temperature sensor 3, valve 4 and pressure regulating mechanism 5 are connected with intelligence control unit 7 respectively.The tonifying Qi Interface 10 is connected with the multiple-pass joint 9.
Distinguishing with embodiment one to be, the pressure regulating mechanism 5 of the present embodiment is mainly by 52 groups of air bag 53, driving part At.Pressure regulating mechanism 5 is according to the control of intelligence control unit 7, so that driving part 52 pushes air bag 53 that volume change occurs, in turn Complete the lifting of pressure.Pressure is adjusted by the pressure regulating mechanism 5, so that gas density relay ontology 1 occurs contact and moves Make, contact movement is transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is according to gas density Pressure value and temperature value when contact acts occur for relay ontology 1, are converted into corresponding density value, detect gas density The alarm of relay ontology 1 and/or locking contact action value and/or return value, to complete to gas density relay ontology 1 Verifying work.
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, It include: gas density relay ontology 1, pressure sensor 2, temperature sensor 3, motor-driven valve 4, pressure regulating mechanism 5, online school Test contact point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, valve 12.One end of the valve 12 is close Envelope is connected on electrical equipment, and the other end of the valve 12 is connected with valve 4;One end of the valve 4 is sealedly attached to valve 12 it is upper, the other end of the valve 4 is connected with multiple-pass joint 9.Gas density relay ontology 1 is mounted on multiple-pass joint 9; The pressure sensor 2, temperature sensor 3, on-line testing contact point signal sampling unit 6 and intelligence control unit 7 are set together.Institute Pressure regulating mechanism 5 is stated to be mounted on multiple-pass joint 9, pressure sensor 2 by multiple-pass joint 9 in gas circuit with gas density after Electric appliance ontology 1 is connected;Tonifying Qi connector 10 is arranged on pressure regulating mechanism 5.The pressure sensor 2, temperature sensor 3 with Intelligence control unit 7 is connected;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 is connected with intelligence control unit 7.
What is different from the first embodiment is that the sampling of the pressure sensor 2, temperature sensor 3, on-line testing contact point signal is single Member 6 and intelligence control unit 7 are set together.
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, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, Self-sealing valve 11.One end of the Self-sealing valve 11 is close Envelope is connected on electrical equipment, and the other end of the Self-sealing valve 11 is connected with one end of valve 4;The other end of the valve 4 passes through Multiple-pass joint 9 and gas density relay ontology 1, pressure sensor 2, pressure regulating mechanism 5, the phase in gas circuit of tonifying Qi interface 10 Connection.The pressure sensor 2, the setting of temperature sensor 3 together, can be organized as gas density transmitter, directly obtain gas Density value, pressure value, the temperature value of body;Pressure regulating mechanism 5 is connected by multiple-pass joint 9 with gas density relay ontology 1 It is logical;On-line testing contact point signal sampling unit 6 and intelligence control unit 7 are set together.The pressure sensor 2, temperature sensor 3 Directly or indirectly it is connected with intelligence control unit 7;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 and intelligence control Unit 7 is connected.
It is distinguishing with embodiment one to be:
1) pressure regulating mechanism 5 of the present embodiment is mainly made of bellows 54, driving part 52.Bellows 54 and gas Density monitor ontology 1 is sealed connected together, and forms a reliable seal cavity.Pressure regulating mechanism 5 is according to intelligence control list The control of member 7, so that driving part 52 pushes bellows 54 that volume change occurs, volume change occurs for seal cavity, and then complete At the lifting of pressure.
2) group becomes gas density transmitter together for the pressure sensor 2, the setting of temperature sensor 3, directly obtains gas Density value, pressure value, the temperature value of body.Pressure is adjusted by the pressure regulating mechanism 5, so that 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 Density value or even pressure value and temperature value when acting according to the contact of gas density relay ontology 1, detect gas density The alarm of relay ontology 1 and/or locking contact action value and/or return value, complete the school to gas density relay ontology 1 Test work.Or only detection obtains alarm and/or the locking contact action value of gas density relay ontology 1, completes to gas The verifying work of density monitor ontology 1.
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, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10.One end of the valve 4, which is sealedly attached to, electrically to be set Standby upper, the other end of the valve 4 is connected with multiple-pass joint 9.The valve 4 is sealed in inside first shell 41, the control electricity of valve 4 Cable is drawn by drawing wire seal 42 with first shell 41 seals first, and design in this way ensures that valve 4 keeps sealing, can It works reliably and with long-term.Tonifying Qi interface 10 is set up directly on electrical equipment, tonifying Qi can be carried out to electrical equipment or micro- water is tested. Gas density relay ontology 1 is mounted on multiple-pass joint 9;The pressure sensor 2, temperature sensor 3, on-line testing contact Signal sampling unit 6 and gas density relay ontology 1 are set together.Pressure sensor 2 in gas circuit with gas density after Electric appliance ontology 1 is connected;The pressure regulating mechanism 5 is mounted on multiple-pass joint 9, pressure regulating mechanism 5 in gas circuit with gas Volume density relay ontology 1 is connected;The pressure regulating mechanism 5 is sealed in inside second shell 55, pressure regulating mechanism 5 Control cable is drawn by drawing wire seal 56 with second shell 55 seals second, and design in this way ensures that pressure adjusts machine Structure 5 guarantees sealing reliably and with long-term, can work reliably and with long-term.The pressure sensor 2, temperature sensor 3 and 7 phase of intelligence control unit Connection;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 is connected with intelligence control unit 7.
Unlike embodiment one: 1) valve 4 and pressure regulating mechanism 5 are sealed in its enclosure interior respectively.2) pressure Force snesor 2, temperature sensor 3, on-line testing contact point signal sampling unit 6 and gas density relay ontology 1 are arranged one It rises.3) also containing micro- water sensor 13, one end is connect with the multiple-pass joint 9, and the other end is connect with the intelligence control unit 7, The micro-water content of the gas chamber of electrical equipment can be monitored, can be with combination pressure regulating mechanism 5 to the circulation of gas, accurate measurements arrive The micro-water content of plenum interior.4) tonifying Qi interface 10 is set up directly on electrical equipment.
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, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, Self-sealing valve 11.One end of the Self-sealing valve 11 is close Envelope is connected on electrical equipment, and the other end of the Self-sealing valve 11 is connected with valve 4;One end of the valve 4 is sealedly attached to certainly The upper of valve 11 is sealed, the other end of the valve 4 is connected with multiple-pass joint 9.Gas density relay ontology 1 is mounted on multiple-pass joint On 9;The pressure sensor 2 is mounted on multiple-pass joint 9, pressure sensor 2 in gas circuit with gas density relay ontology 1 It is connected;The pressure regulating mechanism 5 is mounted on multiple-pass joint 9, pressure regulating mechanism 5 and gas density relay ontology 1 It is connected;On-line testing contact point signal sampling unit 6 and intelligence control unit 7 are set together;The setting of temperature sensor 3 is close in gas Spend the temperature compensating element attachment of the enclosure interior of relay ontology 1.The pressure sensor 2, temperature sensor 3 and intelligence control list Member 7 is connected;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 is connected with intelligence control unit 7.The benefit Gas interface 10 is connected with the multiple-pass joint 9.
There is significant difference with embodiment one, the pressure regulating mechanism 5 of the present embodiment is mainly by gas chamber 57, heating element 58, heat preservation member 59 forms.(can also be internal) has heating element 58 to 57 outside of gas chamber, by heating, leads to the variation of temperature, And then complete the lifting of pressure.Pressure is adjusted by the pressure regulating mechanism 5, so that gas density relay ontology 1 connects Point movement, contact movement are transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is according to gas Pressure value and temperature value when the contact movement of density monitor ontology 1, are converted into corresponding density value, detect that gas is close It spends the alarm of relay and/or is latched contact action value and/or return value, complete the verifying work to gas density relay.
The present embodiment working principle is as follows: when needing to verify density monitor, intelligence control unit 7 controls pressure regulating mechanism 5 heating element 58 is heated, when the temperature of the temperature value T of temperature value T510 and temperature sensor 3 in pressure regulating mechanism 5 After difference reaches setting value, can by intelligence control unit 7 close valve 4 so that gas density relay in gas circuit with electrical equipment Partition;Immediately followed by the heating element 58 of shutdown regulating mechanism 5, heating element 58 is heated in stopping, pressure regulating mechanism 5 The pressure of gas of closed gas chamber 57 just gradually decline so that alarm and/or locking occur for gas density relay ontology 1 Contact acts respectively, and contact movement is transmitted to intelligence control unit 7, intelligence control unit 7 by on-line testing contact point signal sampling unit 6 According to the density value alarmed and/or be latched when contact acts, detect that the alarm of gas density relay and/or locking contact are dynamic Work value and/or return value complete the verifying work to gas density relay.
Embodiment seven:
As shown in figure 8, a kind of gas density relay with online self checking function that the embodiment of the present invention seven provides, It include: that gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, on-line testing connect Point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10.One end of the valve 4, which is sealedly attached to, electrically to be set Standby upper, the other end of the valve 4 is connected with multiple-pass joint 9.Gas density relay ontology 1 is mounted on multiple-pass joint 9;Institute State pressure sensor 2, temperature sensor 3, on-line testing contact point signal sampling unit 6, intelligence control unit 7 setting gas density after On electric appliance ontology 1.Pressure sensor 2 is connected in gas circuit with gas density relay ontology 1;The pressure regulating mechanism 5 It is mounted on multiple-pass joint 9, pressure regulating mechanism 5 is connected with gas density relay ontology 1.The pressure sensor 2, temperature Degree sensor 3 is connected with intelligence control unit 7;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 and intelligence control list Member 7 is connected.
Distinguishing with embodiment one to be, the pressure regulating mechanism 5 of the present embodiment is mainly by 55 groups of solenoid valve, second shell At.Pressure change occurs for pressure regulating mechanism 5, and then complete pressure so that solenoid valve is opened according to the control of intelligence control unit 7 Lifting.Pressure is adjusted by the pressure regulating mechanism 5 (solenoid valve), so that gas density relay ontology 1 occurs contact and moves Make, contact movement is transmitted to intelligence control unit 7 by on-line testing contact point signal sampling unit 6, and intelligence control unit 7 is according to gas density Relay ontology 1 contact movement when pressure value and temperature value, be converted into corresponding density value, detect gas density after The alarm of electric appliance ontology 1 and/or locking contact action value.After the completion of the contact action value verification of gas density relay ontology 1, Intelligence control unit 7 is shut off solenoid valve 5, is then turned on valve 4, pressure change occurs, and then complete the rising of pressure, so that gas is close It spends relay ontology 1 and contact reset occurs, contact, which is resetted, is transmitted to intelligence control unit by on-line testing contact point signal sampling unit 6 7, pressure value and temperature value when intelligence control unit 7 is according to the contact of gas density relay ontology 1 reset (return) are converted into Corresponding density value, detects the alarm and/or locking contact return value of gas density relay ontology 1, and then completes to gas The verifying work of volume density relay ontology 1.
Embodiment eight:
As shown in figure 9, a kind of gas density relay with online self checking function that the embodiment of the present invention eight provides, Include: gas density relay ontology 1, first pressure sensor 21, second pressure sensor 22, the first temperature sensor 31, Second temperature sensor 32, valve 4, pressure regulating mechanism 5, on-line testing contact point signal sampling unit 6, intelligence control unit 7, multi-pass connect First 9, tonifying Qi interface 10, Self-sealing valve 11.One end of the Self-sealing valve 11 is sealedly attached on electrical equipment, the Self-sealing valve 11 The other end is connected with one end of valve 4;The other end of the valve 4 is connected with multiple-pass joint 9.Gas density relay ontology 1, Second pressure sensor 22, second temperature sensor 32, pressure regulating mechanism 5, tonifying Qi interface 10 are arranged on multiple-pass joint 9; First pressure sensor 21, the first temperature sensor 31 are arranged on pressure regulating mechanism 5.The first pressure sensor 21, Second pressure sensor 22, the first temperature sensor 31, second temperature sensor 32 are connected with intelligence control unit 7 respectively.First Pressure sensor 21, second pressure sensor 22, gas density relay ontology 1 are connected in gas circuit with pressure regulating mechanism 5 It is logical;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 is connected with intelligence control unit 7.
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.
Embodiment nine:
As shown in Figure 10, a kind of gas density relay with online self checking function that the embodiment of the present invention nine provides Device, comprising: gas density relay ontology 1, pressure sensor 2, temperature sensor 3, valve 4, pressure regulating mechanism 5, online school It tests contact point signal sampling unit 6, intelligence control unit 7, multiple-pass joint 9, tonifying Qi interface 10, Self-sealing valve 11, micro- water sensor 13, decompose Object sensor 15.One end of the Self-sealing valve 11 is sealedly attached on gas insulated electric apparatus, the Self-sealing valve 11 it is another End is connected with one end of valve 4, and tonifying Qi interface 10 is connected on Self-sealing valve 11;The other end of the valve 4 is connected with multiple-pass joint 9 It connects.Gas density relay ontology 1, pressure sensor 2, pressure regulating mechanism 5, micro- water sensor 13, decomposition product sensor 15 It is arranged on multiple-pass joint 9;Temperature sensor 3 is arranged on electrical equipment.On-line testing contact point signal sampling unit 6, intelligence control Unit 7 is set together.The pressure sensor 2, temperature sensor 3, micro- water sensor 13, decomposition product sensor 15 and intelligence control Unit 7 is connected.Pressure sensor 2, gas density relay ontology 1 are connected in gas circuit with pressure regulating mechanism 5;It is described Valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 is connected with intelligence control unit 7.
What is different from the first embodiment is that temperature sensor 3 is arranged on electrical equipment;Simultaneously also containing monitoring electrical equipment Micro-water content micro- water sensor 13 and monitor decomposition product content decomposition product sensor 15.
Embodiment ten:
As shown in figure 11, a kind of gas density relay with online self checking function that the embodiment of the present invention ten provides Device, comprising: gas density relay ontology 1, first pressure sensor 21, second pressure sensor 22, the first temperature sensor 31, second temperature sensor 32, valve 4, pressure regulating mechanism 5, on-line testing contact point signal sampling unit 6, intelligence control unit 7, more Pass joint 9, tonifying Qi interface 10, connector 16.
One end of the connector 16 is sealedly attached on electrical equipment, the other end of the connector 16 and the one of valve 4 End is connected;And the other end of the valve 4 is connected with multiple-pass joint 9, the valve 4 is sealed in inside first shell 41, valve 4 Control cable is drawn by drawing wire seal 42 with first shell 41 seals first, and design in this way ensures that valve 4 keeps close Envelope, can work reliably and with long-term.Gas density relay ontology 1, first pressure sensor 21, the first temperature sensor 31, pressure Power regulating mechanism 5, tonifying Qi interface 10 are arranged on multiple-pass joint 9.The pressure regulating mechanism 5 is sealed in second shell 55 The control cable in portion, pressure regulating mechanism 5 is drawn by drawing wire seal 56 with second shell 55 seals second, in this way Design ensures that pressure regulating mechanism 5 keeps sealing, can work reliably and with long-term.Second pressure sensor 22, second temperature sensing Device 32 is arranged on connector 16.First pressure sensor 21, second pressure sensor 22, the first temperature sensor 31, second Temperature sensor 32 is connected with intelligence control unit 7;The valve 4 is connected with intelligence control unit 7;The pressure regulating mechanism 5 and intelligence Control unit 7 is connected.
When valve 4 is opened, first pressure sensor 21, second pressure sensor 22, gas density relay ontology 1 are in gas circuit It is upper to be connected with pressure regulating mechanism 5.And when the closing of valve 4, first pressure sensor 21, gas density relay ontology 1 are in gas Road is connected with pressure regulating mechanism 5, and second pressure sensor 22 and gas density relay ontology 1, pressure adjust machine Structure 5 is not communicated 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 has safety protection function, specifically: 1) according to first pressure sensor 21 and first temperature sensor 31 or the second When pressure sensor 22 and second temperature sensor 32 monitor obtained density value lower than setting value, gas density relay is with regard to certainly It is dynamic that no longer gas density relay ontology 1 is verified, and issue bulletin signal.For example, the gas density value when equipment is small When setting value, just do not verify.Only as the gas density value of equipment >=(locking pressure+0.02MPa), school just can be carried out It tests.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 second temperature When degree sensor 32 monitors obtained density value lower than setting value, gas density relay is just automatic no longer to gas density relay Device ontology 1 is verified, and bulletin signal (gas leakage) is simultaneously emitted by.For example, when the gas density value of equipment is less than setting value (locking Pressure+0.02MPa) when, just do not verify.Setting value can arbitrarily be set as needed.While the gas density relay is also With multiple pressure sensors, the mutual verification of temperature sensor and the mutual verification of sensor and gas density relay, Ensure that gas density relay work is normal.I.e. first pressure sensor 21 and the monitoring of second pressure sensor 22 obtain It is compared between pressure value, mutually verifies;First temperature sensor 31 and second temperature sensor 32 monitor obtained temperature It is compared between value, mutually verifies;First pressure sensor 21 and the first temperature sensor 31 monitor obtained density 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, compared between each other It is right, mutually verify.
In conclusion traditional gas density relay ontology is transformed in the present invention, it is additionally arranged gas density inspection Survey sensor, multiple-pass joint, pressure regulating mechanism, on-line testing contact point signal sampling unit and intelligence control unit.Pass through pressure tune The lifting that mechanism adjusts pressure is saved, so that contact movement occurs for gas density relay ontology, contact movement passes through on-line testing Contact point signal sampling unit is transmitted to intelligence control unit, and density value when intelligence control unit is acted according to contact detects gas density The alarm of relay ontology and/or locking contact point signal action value and/or return value.Wherein, gas density relay ontology, pressure The installation position of force snesor, temperature sensor, pressure regulating mechanism, valve, on-line testing contact point signal sampling unit, intelligence control unit Setting can be with flexible combination.By transformation, service personnel need not can complete the verifying work of gas density relay to scene, greatly The reliability for improving power grid greatly, improves efficiency, reduces costs.
Gas density relay involved in a kind of remodeling method of gas density relay of the present invention can be with It refers to that its constituent element designs into a single integrated structure gas density relay, also also refers to its constituent element design ingredient The gas density relay of body structure, is generally referred to as gas density detecting device.
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 normal and abnormal judgement and analysis, compares, and then realizes to the monitoring of electrical equipment gas density, density monitor sheet The states such as body are determined, are compared, are analyzed;Also the contact point signal state of gas density relay is monitored, and its shape State implements teletransmission.It can be in the contact point signal state for being known that gas density relay from the background: it is disconnection or closure, thus More one layer of monitoring, improve reliability;Detection, or detection can also be can be carried out to the temperature compensating of gas density relay ontology And judgement;Can also the contact contact resistance to gas density relay ontology detect, or detection and determine;Also to gas The insulation performance of density monitor ontology is detected, or detection and judgement.
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 (26)

1. a kind of remodeling method of gas density relay characterized by comprising
By gas density detection sensor, it is connected to gas density relay ontology;
By the gas circuit of the gas density relay ontology, the first interface of multiple-pass joint is connected;
By the gas circuit of pressure regulating mechanism, the second interface of the multiple-pass joint is connected, the first interface connects with described second Mouth connection, so that the gas circuit of the pressure regulating mechanism is connected to the gas density relay ontology;The pressure is adjusted Mechanism adjusts the pressure lifting of the gas density relay ontology, makes the gas density relay ontology that contact point signal occur Movement;
By on-line testing contact point signal sampling unit, directly or indirectly it is connected with the gas density relay ontology, it is described On-line testing contact point signal sampling unit samples the contact point signal of the gas density relay ontology at a temperature of environment;
By intelligence control unit, connect respectively with the gas density detection sensor, the pressure regulating mechanism and the on-line testing Point signal sampling unit be connected, complete the pressure regulating mechanism control, pressure value acquisition and temperature value acquisition, and/or The acquisition of gas density value, and the contact point signal action value and/or contact point signal of the detection gas density relay ontology return Return value;
Wherein, the contact point signal includes alarm, and/or locking.
2. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the gas density Detection sensor, the on-line testing contact point signal sampling unit and the intelligence control unit are arranged in the gas density relay On ontology;Alternatively,
The pressure regulating mechanism is arranged on the gas density relay ontology;Alternatively,
The gas density detection sensor, the pressure regulating 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 multiple-pass joint is arranged on the pressure regulating mechanism;Alternatively,
The pressure regulating 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.
3. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the gas density Relay ontology, the gas density detection sensor are integrated;Alternatively, the gas density relay ontology, institute State the telemetering type gas density relay that gas density detection sensor is integrated.
4. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the gas density Detection sensor is integrated;Alternatively, the gas density pick-up that the gas density detection sensor is integrated Device.Preferably, the on-line testing contact point signal sampling unit, the intelligence control unit are arranged in the gas density transmitter On.
5. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the on-line testing Contact point signal sampling unit and the intelligence control unit are set together;Preferably, the on-line testing contact point signal sampling unit It is sealed in a cavity or shell with the intelligence control unit.
6. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the gas density Detection sensor includes pressure sensor and temperature sensor;Alternatively,
Using the gas density transmitter being made of pressure sensor and temperature sensor;Alternatively,
Using the density detection sensor of quartz tuning-fork technology.
7. a kind of remodeling method of gas density relay according to claim 6, it is characterised in that: the pressure sensing Device 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.
8. a kind of remodeling method of gas density relay according to claim 6, it is characterised in that: the gas density Detection sensor includes at least one pressure sensor, at least one temperature sensor.
9. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control unit Obtain the gas density value of the gas density detection sensor acquisition;Alternatively, the intelligence control unit obtains the gas density The pressure value and temperature value of detection sensor acquisition, complete gas of the gas density relay to the electrical equipment monitored The on-line monitoring of density.
10. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control list Member obtains gas density relay ontology when contact point signal movement or switching occurs, the gas density detection sensor is adopted The gas density value of collection, 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.
11. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the gas is close Degree relay ontology includes but is not limited to the gas density relay of the gas density relay of bimetallic strip compensation, gas compensation The gas density relay of device, bimetal leaf and gas compensation mixed type;Entirely mechanical gas density relay, numeric type gas The gas density relay of volume density relay, machinery and digital mating type;Gas density relay, the digital display shown with pointer Type gas density relay, without display or instruction gas density switch;SF6 gas density is relay, SF6 mixed gas are close Spend relay, N2 gas density relay.
12. a kind of remodeling method of gas density relay according to claim 1, which is characterized in that further include:
One end of valve is connected with electrical equipment, the other end of the valve and the pressure regulating mechanism, the gas is close Spend the connection of relay ontology;Wherein,
The valve is motor-driven valve, and/or solenoid valve, or is piezo electric valve, or is temperature controlled valve, or for using intelligent memory material New type of valve that material makes, being opened or closed using electric heating;
The electrical equipment is SF6 outlet openings equipment, or is SF6 mixed gas electrical equipment, or is environment-friendly type outlet openings Equipment, or be other insulating gas electrical equipments.
13. a kind of remodeling method of gas density relay according to claim 12, it is characterised in that: also by the valve It is connected with the intelligence control unit, realizes the valve under the control of the intelligence control unit and turn off or on.
14. a kind of remodeling method of gas density relay according to claim 12, it is characterised in that: the valve sealing In a cavity or shell;Or
The valve and the pressure regulating mechanism are sealed in a cavity or shell.
15. a kind of remodeling method of gas density relay according to claim 12, it is characterised in that: the multi-pass connects Head is equipped with third interface, and the third interface is equipped with the interconnecting piece docked with the electrical equipment, and the valve is embedded in described In interconnecting piece.
16. a kind of remodeling method of gas density relay according to claim 12, which is characterized in that further include: it will Self-sealing valve is installed between the multiple-pass joint and the valve;Alternatively, the valve is installed on the multiple-pass joint and Self-sealing valve Between.
17. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the pressure tune Section mechanism is sealed in a cavity or shell.
18. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: described when verification Pressure regulating mechanism is a sealed gas chamber, and the outside or inside of the sealed gas chamber is equipped with heating element, and/or cooling module, By heating the heating element, and/or freezing by the cooling module, lead to the temperature of the gas in the sealed gas chamber Variation, 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 or the gas Volume density relay ontology;There is piston in the cavity, one end of the piston is connected with an adjusting rod, the adjusting rod Outer end connects driving part, and the other end of the piston protrudes into the opening, and, institute in sealing contact with the inner wall of the cavity Driving part is stated to drive the adjusting rod and then the piston is driven to move in the cavity;Alternatively,
The pressure regulating mechanism is a sealed gas chamber, and the inside of the sealed gas chamber is equipped with piston, the piston with it is described close Hold one's breath room inner wall it is in sealing contact, the outside of the sealed gas chamber is equipped with driving part, and the driving part is pushed by electromagnetism The piston is moved to move in the cavity;Alternatively,
The pressure regulating mechanism is the air bag that one end connects driving part, and the air bag is issued in the driving of the driving part Raw volume change, the air bag are connected to the multiple-pass joint or the gas density relay ontology;Alternatively,
The pressure regulating mechanism is bellows, one end of the bellows be connected to the multiple-pass joint or the gas density after Electric appliance ontology, the other end of the bellows stretch under the driving of driving part;Alternatively,
The pressure regulating mechanism is a vent valve, the vent valve be solenoid valve or motor-driven valve or it is other by electricity or gas The vent valve realized of mode;Alternatively,
The pressure regulating mechanism is a compressor;Alternatively,
The pressure regulating mechanism is a pump, and the pump including but not limited to makes press pump, booster pump, electric air pump, Electromagnetic air pump One of;
Wherein, the driving part includes but is not limited to magnetic force, motor, reciprocating mechanism, Carnot cycle mechanism, pneumatic member One of part.
19. a kind of remodeling method of gas density relay according to claim 18, it is characterised in that: the pressure tune Saving mechanism further includes heat preservation member, and the heat preservation member is set to the outside of the sealed gas chamber.
20. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control list Member has electric interfaces, and the electric interfaces complete test data storage and/or test data export and/or test data is beaten Print, and/or data communication, and/or input analog quantity, digital information are carried out with host computer.
21. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control list Member further includes realizing the communication module of remote transmitting test data, and/or check results, the communication modes of the communication module For wire communication or wireless communication mode.
22. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control list Clock is additionally provided in member, the clock is configurable for that the checking time of the gas density relay is periodically arranged, or Recording test time, or record event time.
23. a kind of remodeling method of gas density relay according to claim 1, it is characterised in that: the intelligence control list The control of member is by field control, and/or passes through Background control.
24. a kind of remodeling method of gas density relay according to claim 1, which is characterized in that further include: it will be micro- Water sensor is connected with the gas density relay ontology and the intelligence control unit respectively, and/or by decomposition product sensor It is connected respectively with the gas density relay ontology and the intelligence control unit.
25. a kind of remodeling method of gas density relay according to claim 1, which is characterized in that further include: in institute State gas density relay ontology, and/or the gas density detection sensor, and/or the pressure regulating mechanism, and/or Camera of the installation for monitoring on the on-line testing contact point signal sampling unit, and/or the intelligence control unit.
26. a kind of remodeling method of gas density relay according to claim 1, which is characterized in that further include: in institute State setting tonifying Qi interface on pressure regulating mechanism;Alternatively, tonifying Qi interface is arranged on the electrical equipment;Alternatively, described more Tonifying Qi interface is set on pass joint;Alternatively, tonifying Qi interface is arranged on the gas density relay ontology.
CN201910830232.2A 2019-09-04 2019-09-04 Transformation method of gas density relay Active CN110514996B (en)

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CN201910830232.2A CN110514996B (en) 2019-09-04 2019-09-04 Transformation method of gas density relay
PCT/CN2020/111251 WO2021043039A1 (en) 2019-09-04 2020-08-26 Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof
EP20861565.8A EP4027155A4 (en) 2019-09-04 2020-08-26 Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof
US17/640,778 US20220336170A1 (en) 2019-09-04 2020-08-26 Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof
JP2022515120A JP2022548538A (en) 2019-09-04 2020-08-26 Modification method of gas density relay, gas density relay with online self-verification function and its verification method

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2021043039A1 (en) * 2019-09-04 2021-03-11 上海乐研电气有限公司 Transformation method for gas density relay, and gas density relay having online self-check function and check method thereof
WO2021115289A1 (en) * 2019-12-11 2021-06-17 上海乐研电气有限公司 Method for modifying gas density relay, and gas density relay having online self-checking function and checking method therefor

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