CN201004042Y - SF6 air density relay calibrator - Google Patents
SF6 air density relay calibrator Download PDFInfo
- Publication number
- CN201004042Y CN201004042Y CNU2007200661866U CN200720066186U CN201004042Y CN 201004042 Y CN201004042 Y CN 201004042Y CN U2007200661866 U CNU2007200661866 U CN U2007200661866U CN 200720066186 U CN200720066186 U CN 200720066186U CN 201004042 Y CN201004042 Y CN 201004042Y
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- gas
- pressure
- gas density
- density relay
- computer data
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Abstract
The utility model discloses a SF6 gas density replay potency meter comprising an air source supplying device, a pressure sensor, a temperature sensor, a computer data processing system, an operating keyboard and a display screen connected with the computer data processing system; the computer data processing system is provided with an input port of the replay action signals, the detecting port of the SF6 gas density replay potency meter is communicated with the port on the air source supplying device by a connecting air pipe, the pressure signals are transferred to the computer data processing system by the pressure sensor, the temperature signals of the SF6 gas density replay are also transferred to the computer data processing system by the temperature sensor. The air source of the potency meter is suitable for the SF6 gas density replay using on site, the utility model with a sealed circling has the advantages of simple structure, small volume, light weight and convenient operating.
Description
Technical field
The utility model relates to a kind of to SF
6The performance of gas density relay is carried out the SF of verification
6Gas density relay checking instrument.
Technical background
SF
6Electric product has been widely used in power department, industrial and mining enterprises, has promoted the fast development of power industry.How to guarantee SF
6The reliable and secure operation of electric product has become one of vital task of power department.SF
6Gas density relay is SF
6One of key element of electric switch, it is used for detecting SF
6SF in the electrical equipment body
6The variation of gas density, its performance quality directly has influence on SF
6The reliable and secure operation of electrical equipment.Be installed on on-the-spot SF
6Gas density relay is because of often action, and the phenomenon of dumb or poor contact of contacts often appears moving in after date during through one section, and what have also the temperature compensation degradation can occur, causes SF when variation of ambient temperature easily
6The gas density relay misoperation.Therefore, to the SF at scene
6It is to prevent trouble before it happens that gas density relay carries out periodic check, ensures one of necessary means of power equipment safety reliability service.In airtight container, the SF under the uniform temperature
6Gaseous tension can be represented SF
6Gas density.In order to unify SF during traditionally often 20 ℃
6The pressure of gas is as the typical value of its corresponding density.So, SF
6Gas density relay SF during all with 20 ℃
6The pressure of gas is as scale value.At the scene during verification, under different environment temperatures, the normal pressure value the when force value that measures all will be converted to its corresponding 20 ℃, thus judge this SF
6The performance of gas density relay.Present SF
6The method of calibration of gas density relay mainly contains following several on the engineering:
One. utilize SF
6The equipment gas replenishment process carries out verification to density monitor.This method is mainly used in the scene, and there is following problem in it: (1) temperature effect is big, is difficult to guarantee accuracy; (2) utilize SF
6Table meter reading on the gas cylinder, degree of accuracy is very poor, can not guarantee accuracy; (3) SF
6Density monitor is applied to the step-down process, and comes verification with gas replenishment process, does not conform to practical situations, also influences verification and accurately goes.
Two. utilize SF
6The equipment deflation course is to the density monitor verification.Exist in this way with method one in (1), (2) same problem, and will be during venting to SF
6Gas recovery needs with special SF
6Gas concentration unit, very inconvenient; (3) need in the constant temperature enclosure verification.This method of calibration is carried out in isoperibol, eliminated the error that temperature is brought verification, therefore the accuracy of verification is higher, but checking time is long in this way, need set up special constant temperature laboratory, and will set up the full-time worker, increase on-the-spot work difficulty, both uneconomical also inconvenient, be unpractical in fact at the scene;
Three. the SF of present employed various models
6Gas density relay checking instrument, though the pressure and temperature value when adopting the test density actuating of relay basically, then according to SF
6The pressure-temperature characteristic relation of gas, force value when utilizing microcomputer to be converted into 20 ℃ automatically promptly can be carried out automatic dynamic temp compensation.But these testers all exist and use trouble and inconvenient, and its verification operation step does not meet on-the-spot the use yet.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above that prior art exists, and a kind of simple in structure, SF that volume is little, in light weight, easy to use is provided
6Gas density relay checking instrument.
Realize that the above-mentioned purpose technical scheme is: a kind of SF
6Gas density relay checking instrument, the source of the gas that comprises an adjustable in pressure provides mechanism, also comprise at least one pressure transducer, temperature sensor, computer data processor, operation keyboard and a display screen that is connected computer data processor, computer data processor is provided with the actuating signal input port of measured relay, and described source of the gas provides mechanism to connect tracheae with SF by one
6Gas density relay verification mouth and source of the gas provide the interface in the mechanism to be communicated with, and described pressure transducer is transferred to computer data processor with pressure signal, and described temperature sensor is with SF
6The temperature signal of gas density relay is transferred to computer data processor.
Above-mentioned SF
6Gas density relay checking instrument, wherein, described source of the gas provides mechanism to comprise a pressure regulating cylinder that is used to provide source of the gas, piston is housed in the pressure regulating cylinder, piston is connected with an adjuster bar, handwheel is equipped with in the adjuster bar outer end, and handwheel drives adjuster bar and then the drive piston moves in pressure regulating cylinder by rotating, and realizes the adjusting to bleed pressure in the pressure regulating cylinder.
Above-mentioned SF
6Gas density relay checking instrument wherein, comprises that also one can be carried out memory storing to the result of verification.
Above-mentioned SF
6Gas density relay checking instrument wherein, also comprises a data output interface, with output and printing related data and result.
Above-mentioned SF
6Gas density relay checking instrument, wherein, described operation keyboard and display screen join together and are touch-screen.
SF of the present utility model
6The advantage of gas density relay checking instrument is: the source of the gas in the tester meets SF
6Density monitor is on-the-spot to be used, and it is that circulation is totally enclosed, and it is simple in structure, volume is little, in light weight, easy to use.The checking process of this tester is simple to operate, meets the field-checking flow process and uses laborsaving and convenience, and the automatic verification by to product to be tested tests out this test article, i.e. SF
6Whether gas density relay is qualified; Manually reading and record, these related datas are easy to storage, print, judge and handle simultaneously, and can further work out test report.
Description of drawings
Fig. 1 is SF of the present utility model
6The structural representation of gas density relay checking instrument;
Fig. 2 is the utility model SF
6Source of the gas in the gas density relay checking instrument provides the structural representation of mechanism;
Fig. 3 is SF of the present utility model
6The checking process block diagram of gas density relay checking instrument.
Embodiment
See also Fig. 1, a kind of SF of the present utility model
6Gas density relay checking instrument, comprise adjustable in pressure, comprise and be with the source of the gas of check (non-return) valve 8 that mechanism 15 is provided, a pressure transducer 16, a temperature sensor 17, a computer data processor 18, a display screen 19 and an operation keyboard (being man-machine interface) 20 that connects computer data processor, computer data processor is provided with the actuating signal input port of measured relay 14, source of the gas provides mechanism 15 to connect tracheae 150 by one provides the reverse checkvalve in the mechanism 15 to be communicated with in measured relay 14 verification mouths and source of the gas, the pressure signal that pressure transducer 16 will offer measured relay 14 is transferred to computer data processor 18, and temperature sensor 17 is transferred to computer data processor 18 with the temperature signal of measured relay 14.Computer data processor 18 comprises that one can be carried out memory storing and a data output interface to the result of verification, with output and printing related data and result.If joining together, operation keyboard and display screen be touch-screen.
See also Fig. 2 again, the utility model SF
6Source of the gas in the gas density relay checking instrument provides the structural representation of mechanism 15.It mainly comprises piston 1, wireway 21,22,23, valve 3, casing 4, air reservoir 5, pressure transducer 16, four-way seat 7, reverse checkvalve 8, O RunddichtringO 91,92, adjuster bar 10, handwheel 11, installing plate 12, pressure regulating cylinder 13.Air reservoir 5 is connected with an end of wireway 22, communicates on gas circuit; The other end of wireway 22 is connected with an end of valve 3; The other end of valve 3 is connected with an end of wireway 21; The other end of wireway 21 is connected with an interface of four-way seat 7; Another interface of four-way seat 7 is connected with an end of wireway 23 again; Pressure transducer 16 is fixed on the 3rd interface of four-way seat 7; Reverse checkvalve 8 is fixed on the 4th interface of four-way seat 7.The other end of wireway 23 is connected with pressure regulating cylinder 13; Piston 1 is arranged in the pressure regulating cylinder, and O-ring seal 91,92 is set in the groove of piston 1, and major function is that piston 1 seals when pressure is regulated in pressure regulating cylinder 13 motions; Piston 1 is movably connected with adjuster bar 10 again and connects; Adjuster bar 10 is connected again on the end cap of pressure regulating cylinder 13, can free activity regulate pressure; Handwheel 11 is movably connected with adjuster bar 10 and connects, and handwheel 11 can be movable, during use and adjuster bar 10 combine, the time spent can be not for convenience detach.Installing plate 12 is fixed on air reservoir 5 and the pressure regulating cylinder 13, and valve 3 and four-way seat 7 are fixed on the installing plate 12; Above element is installed in again in the casing 4.Air reservoir 5 by favorable sealing property, pressure regulating cylinder 13, valve 3, piston 1 (studding with O-ring seal 91,92), wireway 22, pressure transducer 16, reverse checkvalve 8, adjuster bar 10, handwheel 11 etc. have just been set up totally enclosed SF6 gas-circulating system, can make things convenient for, trickle, slowly, adjusting pressure that repeat, light, make and do not waste SF in the checking procedure
6Gas.
When using at the scene, use SF
6Gas connects an end and the SF of tracheae 150
6SF on the electrical equipment
6Gas density relay verification mouth is connected SF
6The other end that gas connects tracheae 150 provides the reverse checkvalve 8 in the mechanism 15 to be connected with source of the gas, after connecting, observes force value, if pressure is not enough, illustrates that gas is not enough, just opens valve 3, the gas of air reservoir 5 is released, till gas is enough tested.Valve-off 3 then, just can regulate the SF that is tested by regulating piston 1
6The pressure of gas density relay, just can the verification density monitor.Its operation key step (referring to Fig. 3) is as follows:
Step 100, beginning; Step 200, self check, but but check deposit data and residue deposit data; Step 300, selection instruction has verification preparation, data query, the time is set, reduced pressure, help is checked and instrumental calibration is selective; According to the prompting on the LCD screen 19, should choose one this moment wantonly, if selection check is prepared, then enters step 310, and verification is prepared, and first execution in step 311 is set the test article numbering, if the test article of setting numbering is existing, test just enters step 312 again if desired; Or return and enter step 312 after step 311 resets test article numbering, step 312 is selected number of contacts, has warning, warning+locking, warning+locking 1+ locking 2 and warning+locking+superpressure selective; According to the prompting on the LCD screen 19, enter step 313 after selected one, set nominal parameter, P (pressure) ratings, precision, P (pressure) alarming value and P (pressure) locking value all must be set; Enter step 314 then, adjust pressure to ratings, whether observe force value earlier meets the requirements, if force value is on the low side, slowly opening source of the gas again provides the air reservoir valve 3 of mechanism 15, after the observation force value has arrived desired force value, just close air reservoir valve 3, counter-clockwise direction is shaken handwheel 11 then, reduce pressure, to during the pressure nominal value of the density monitor 14 tested, execution in step 315 afterwards, and verification begins, have ratings in the verification, alarming value, the warning rreturn value, locking value and locking rreturn value, when verification, be to begin verification, according to the prompting on the LCD screen 19 according to the rule that pressure is reduced earlier to increase again, elder generation's verification ratings, and then according to the prompting on the LCD screen 19, counter-clockwise direction is shaken handwheel 11 again, reduces pressure, to during the locking value of the density monitor 14 tested, clockwise direction is shaken handwheel 11 again, and pressure boost is to during the warning rreturn value of the density monitor tested.After finishing verification, show this measurement result on the LCD screen 19, when the force value in the test result ratings 0.15Mpa occurs being lower than or is higher than ratings 0.1Mpa, need to check wiring and test article contact situation, then increase step 316 ' the inspection fault.When force value is lower than ratings 0.15Mpa, this contact is also obstructed, and this contact place has problem or contact obstructed with regard to showing wiring, or one is straight-through; When force value is higher than ratings 0.1Mpa, this contact is also obstructed, and this contact place has problem or contact obstructed with regard to showing wiring, or one is straight-through.Fault is got back to step 315 after getting rid of.Show force value, deviate and conclusion after verification is finished on the LCD screen 19, enter step 316 afterwards, select whether to finish this verification; If select then not get back to step 314, readjust verification behind the pressure; If select to be, then enter step 317, storage and print result.Order between step 3.11, step 3.12, the step 3.13 allows to exchange in addition.
After step 300 selection instruction, can also enter following steps: step 320, the data query instruction is introduced into step 321, selects the data query mode; According to the prompting on the LCD screen 19,, inquire about and obtain Query Result if select then to enter step 3211 by the numbering inquiry; Obtain after input test product numbering is confirmed earlier: test product numbering, test duration, ratings, alarming value, locking value and precision.Also can then inquire about raw data.If select inquiry by date, then enter step 3212, inquire about and obtain Query Result.Obtain after the date affirmation of input earlier: test product numbering, test duration, ratings, alarming value, locking value and precision.Also can then inquire about raw data.
After step 300 selection instruction, can also enter following steps: step 330, the reduced pressure instruction is introduced into step 331, selection pressure conversion mode; According to the prompting on the LCD screen 19, if select PT (force value under other temperature) to be converted to P20 (20 ℃ of force value), then enter step 3311, convert and obtain the result that converts; Obtain the P20 value this moment.If select to be converted to PT (force value under other temperature) by P20 (20 ℃ of force value), then enter step 3312, convert and obtain the result that converts.Obtain the PT value this moment.
After described step 300 selection instruction, can also enter following steps: step 340, the calibrating instrument instruction, be introduced into step 341, set the instrumental calibration password, tester meeting initiation parameter behind the affirmation instrumental calibration password, then enter step 342, the established standards parameter, the standard temperature T of on-line measurement and pressure criteria value P, enter step 343 then, revision instrument parameter: calculate the pressure and temperature deviate according to the pressure and temperature standard value of setting and the pressure and temperature value of on-line measurement, revise the pressure and temperature parameter of instrument then.
After step 300 selection instruction, can also enter following steps: step 350, check help command.Mainly be explanation, the explanation of instrumentation step of each operating key.
Can also enter following steps after step 300 selection instruction: step 360 is provided with time command.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (5)
1. SF
6Gas density relay checking instrument, the source of the gas that comprises an adjustable in pressure provides mechanism, it is characterized in that, also comprise at least one pressure transducer, temperature sensor, computer data processor, operation keyboard and a display screen that is connected computer data processor, computer data processor is provided with the actuating signal input port of measured relay, and described source of the gas provides mechanism to connect tracheae with SF by one
6Gas density relay verification mouth and source of the gas provide the interface in the mechanism to be communicated with, and described pressure transducer is transferred to computer data processor with pressure signal, and described temperature sensor is with SF
6The temperature signal of gas density relay is transferred to computer data processor.
2. SF according to claim 1
6Gas density relay checking instrument, it is characterized in that, described source of the gas provides mechanism to comprise a pressure regulating cylinder that is used to provide source of the gas, piston is housed in the pressure regulating cylinder, piston is connected with an adjuster bar, handwheel is equipped with in the adjuster bar outer end, and handwheel drives adjuster bar and then the drive piston moves in pressure regulating cylinder by rotating, and realizes the adjusting to bleed pressure in the pressure regulating cylinder.
3. SF according to claim 1
6Gas density relay checking instrument is characterized in that, comprises that also one can be carried out memory storing to the result of verification.
4. SF according to claim 1 and 2
6Gas density relay checking instrument is characterized in that, also comprises a data output interface, with output and printing related data and result.
5. SF according to claim 1 and 2
6Gas density relay checking instrument is characterized in that, described operation keyboard and display screen join together and be touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200661866U CN201004042Y (en) | 2007-01-09 | 2007-01-09 | SF6 air density relay calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200661866U CN201004042Y (en) | 2007-01-09 | 2007-01-09 | SF6 air density relay calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004042Y true CN201004042Y (en) | 2008-01-09 |
Family
ID=39039583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200661866U Expired - Fee Related CN201004042Y (en) | 2007-01-09 | 2007-01-09 | SF6 air density relay calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004042Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375082A (en) * | 2014-11-04 | 2015-02-25 | 广州供电局有限公司 | Intelligent SF6 density relay calibration device and method |
| CN105004629A (en) * | 2015-04-21 | 2015-10-28 | 国家电网公司 | Calibration device of SF6 gas density on-line monitoring device |
| CN106772008A (en) * | 2016-12-23 | 2017-05-31 | 国网山东省电力公司菏泽供电公司 | A kind of pressure controllable type SF6 gas density is relay signal stimulation tester |
| CN107064792A (en) * | 2017-06-01 | 2017-08-18 | 上海上芃电气有限公司 | A kind of SF6Gas density relay checking instrument |
| CN110412460A (en) * | 2019-09-04 | 2019-11-05 | 上海乐研电气有限公司 | A kind of gas density relay calibration equipment and its method of calibration |
| CN110530758A (en) * | 2019-09-04 | 2019-12-03 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
-
2007
- 2007-01-09 CN CNU2007200661866U patent/CN201004042Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375082A (en) * | 2014-11-04 | 2015-02-25 | 广州供电局有限公司 | Intelligent SF6 density relay calibration device and method |
| CN105004629A (en) * | 2015-04-21 | 2015-10-28 | 国家电网公司 | Calibration device of SF6 gas density on-line monitoring device |
| CN106772008A (en) * | 2016-12-23 | 2017-05-31 | 国网山东省电力公司菏泽供电公司 | A kind of pressure controllable type SF6 gas density is relay signal stimulation tester |
| CN106772008B (en) * | 2016-12-23 | 2023-05-16 | 国网山东省电力公司菏泽供电公司 | Pressure-controllable SF6 gas density relay signal simulation tester |
| CN107064792A (en) * | 2017-06-01 | 2017-08-18 | 上海上芃电气有限公司 | A kind of SF6Gas density relay checking instrument |
| CN110412460A (en) * | 2019-09-04 | 2019-11-05 | 上海乐研电气有限公司 | A kind of gas density relay calibration equipment and its method of calibration |
| CN110530758A (en) * | 2019-09-04 | 2019-12-03 | 上海乐研电气有限公司 | A kind of gas density relay and its method of calibration with online self checking function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20160109 |