CN102890241B - Gas circuit system for online checking device of mutation pressure relay - Google Patents
Gas circuit system for online checking device of mutation pressure relay Download PDFInfo
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- CN102890241B CN102890241B CN201210408915.7A CN201210408915A CN102890241B CN 102890241 B CN102890241 B CN 102890241B CN 201210408915 A CN201210408915 A CN 201210408915A CN 102890241 B CN102890241 B CN 102890241B
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- charged electrical
- electrical magnet
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- magnet valve
- pressure
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- 230000035772 mutation Effects 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 6
- 238000002703 mutagenesis Methods 0.000 claims description 6
- 231100000350 mutagenesis Toxicity 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Abstract
The invention relates to a gas circuit system for an online checking device of a mutation pressure relay, and the gas circuit system comprises a front end pre-pressing part and a back end measuring part which are mutually connected, wherein the front end pre-pressing part comprises a pre-pressing pump, a pre-pressing solenoid valve, an energy storage device, a pre-pressing end connector, a charging solenoid valve bank, a pre-pressing end sensor and a pre-pressing end exhaust valve, the back end measuring part comprises a measuring end connector, a standard mutation pressure relay and a measuring end exhaust valve, the pre-pressing pump, the pre-pressing solenoid valve, the energy storage device and the pre-pressing end connector are connected in sequence, the pre-pressing end connector is respectively connected with the charging solenoid valve bank, the pre-pressing end sensor and the pre-pressing end exhaust valve, the charging solenoid valve bank is connected with the measuring end connector, the measuring end connector is respectively connected with a mutation pressure relay to be detected and the measuring end exhaust valve, and the mutation pressure relay to be detected is connected with the standard mutation pressure relay. Compared with the prior art, the gas circuit system provided by the invention has the advantages of accurately controlling the flow rate, and the like.
Description
Technical field
The present invention relates to a kind of pressure switch on-line testing device correlation technique, especially relate to a kind of air-channel system for mutation pressure relay on-line testing device.
Background technology
For adapting to the needs of Chinese national economy high speed development, the transformer of a large amount of high voltage large capcity enters down town in recent years.Due to the singularity of urban electricity supply, more and more higher to the requirement of these transformer safety, especially the explosion-proof ability of transformer wants high.Because of the transformer in city once the economic loss not only caused on fire that bursts is very large, larger social influence can be caused simultaneously, therefore prevent failure transformer to burst the common prescription of Shi Ge transformer production factory on fire and electric industry department.Especially, under the situation that nowadays transformer running environment is severe, only split the explosion problem that ability solves failure transformer cannot carry out initial failure prevention completely by improving transformer self antiknock.At this moment, mutation pressure protection application be to main transformer non-charge protection raising and supplement; With regard to on-the-spot long-time running situation, specialize in the mechanism to mutation pressure protection, application and reliability from basic unit technician to Utilities Electric Co. and be also short in understanding and confidence.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of air-channel system for mutation pressure relay on-line testing device is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of air-channel system for mutation pressure relay on-line testing device, it is characterized in that, comprise interconnective front end precompressed part and rear end measure portion, described front end precompressed part comprises pre-press pump, pre-pressure electromagnetic valve, accumulator, precompressed terminal adapter, charged electrical magnet valve group, precompressed end sensor and pre-pressure side vent valve, described rear end measure portion comprises measuring junction connector, standard mutagenesis pressure switch and measuring junction vent valve, described pre-press pump, pre-pressure electromagnetic valve, accumulator, precompressed terminal adapter connects successively, described precompressed terminal adapter respectively with charged electrical magnet valve group, precompressed end sensor, pre-pressure side vent valve connects, described charged electrical magnet valve group is connected with measuring junction connector, described measuring junction connector respectively with mutation pressure relay to be measured, measuring junction vent valve connects, described mutation pressure relay to be measured is connected with standard mutagenesis pressure switch.
Described charged electrical magnet valve group comprises the first charged electrical magnet valve, the second charged electrical magnet valve, the 3rd charged electrical magnet valve and the 4th charged electrical magnet valve that are arranged in parallel between precompressed terminal adapter and measuring junction connector; When measurement speed is < 75kPa/s, only use the first charged electrical magnet valve, when measuring pressure speed > 75kPa/s, use the first charged electrical magnet valve, the second charged electrical magnet valve, the 3rd charged electrical magnet valve and the 4th charged electrical magnet valve simultaneously.
Also comprise flow control valve, this flow control valve is located between charged electrical magnet valve group and mutation pressure relay to be measured, when measurement speed is 5kPa/s, and start velocity operation valve.
Compared with prior art, the present invention has the following advantages:
1, the precision realizing flow controls, and takes Small Flow Control by throttling valve mode, and the mode that large discharge controls the action simultaneously of employing 4 solenoid valves provides source of the gas for calibration equipment.
2, control progress is high, reliability is high and security good, and the field-checking dynamically measured for electrical network provides strong technical guarantee, has filled up domestic blank;
3, by design air-channel system of the present invention, achieve the on-line testing of mutation pressure relay, so that the check test of site mutant pressure switch, meet the needs of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of air-channel system for mutation pressure relay on-line testing device, comprise interconnective front end precompressed part 1 and rear end measure portion 2, described front end precompressed part 1 comprises pre-press pump 11, pre-pressure electromagnetic valve 12, accumulator 13, precompressed terminal adapter 14, charged electrical magnet valve group, precompressed end sensor 16 and pre-pressure side vent valve 17, described rear end measure portion 2 comprises measuring junction connector 21, standard mutagenesis pressure switch 24 and measuring junction vent valve 22, described pre-press pump 11, pre-pressure electromagnetic valve 12, accumulator 13, precompressed terminal adapter 14 connects successively, described precompressed terminal adapter 14 respectively with charged electrical magnet valve group, precompressed end sensor 16, pre-pressure side vent valve 17 connects, described charged electrical magnet valve group is connected with measuring junction connector 21, described measuring junction connector 21 respectively with mutation pressure relay 23 to be measured, measuring junction vent valve 22 connects, described mutation pressure relay to be measured 23 is connected with standard mutagenesis pressure switch 24.
Described charged electrical magnet valve group comprises the first charged electrical magnet valve 151, the second charged electrical magnet valve 152, the 3rd charged electrical magnet valve 153 and the 4th charged electrical magnet valve 154 that are arranged in parallel between precompressed terminal adapter 14 and measuring junction connector 21; When measurement speed is < 75kPa/s, only use the first charged electrical magnet valve 151, when measuring pressure speed > 75kPa/s, use the first charged electrical magnet valve 151, second charged electrical magnet valve 152, the 3rd charged electrical magnet valve 153 and the 4th charged electrical magnet valve 154 simultaneously.
The present invention also comprises flow control valve 3, and this flow control valve 3 is located between charged electrical magnet valve group and mutation pressure relay to be measured, when measurement speed is 5kPa/s, and start velocity operation valve.
Mutation pressure relay on-line testing device carries out under laboratory verifying work needs reference mark at 5kPa/s, 10kPa/s, 20kPa/s, 50kPa/s, 100kPa/s, 200kPa/s, therefore the mode that regulates after adopting first precompressed of the present invention.Specific implementation process: make pressure by pre-press pump 11, while making pressure, opens pre-pressure electromagnetic valve 12 and is pre-stressed to more than 100kPa to accumulator 13, then is gone to regulate by pre-pressure side vent valve 17 and make it reach required working pressure.When operating rate is at 5kPa/s, the first charged electrical magnet valve 151 is in adjustment state, and the second charged electrical magnet valve 152, the 3rd charged electrical magnet valve 153, the 4th charged electrical magnet valve 154 are closed.At this moment, external flow control valve 3 is connected to export and tested between.When operating rate is at 10kPa/s, 20kPa/s, 50kPa/s, 100kPa/s, 200kPa/s, the first charged electrical magnet valve 151, second charged electrical magnet valve 152, the 3rd charged electrical magnet valve 153 and the 4th charged electrical magnet valve 154 are in adjustment state respectively.At this moment, output is directly connected with tested.Tested end pressure release is emptying by measuring junction vent valve.
Claims (1)
1. the air-channel system for mutation pressure relay on-line testing device, it is characterized in that, comprise interconnective front end precompressed part and rear end measure portion, described front end precompressed part comprises pre-press pump, pre-pressure electromagnetic valve, accumulator, precompressed terminal adapter, charged electrical magnet valve group, precompressed end sensor and pre-pressure side vent valve, described rear end measure portion comprises measuring junction connector, standard mutagenesis pressure switch and measuring junction vent valve, described pre-press pump, pre-pressure electromagnetic valve, accumulator, precompressed terminal adapter connects successively, described precompressed terminal adapter respectively with charged electrical magnet valve group, precompressed end sensor, pre-pressure side vent valve connects, described charged electrical magnet valve group is connected with measuring junction connector, described measuring junction connector respectively with mutation pressure relay to be measured, measuring junction vent valve connects, described mutation pressure relay to be measured is connected with standard mutagenesis pressure switch,
Described charged electrical magnet valve group comprises the first charged electrical magnet valve, the second charged electrical magnet valve, the 3rd charged electrical magnet valve and the 4th charged electrical magnet valve that are arranged in parallel between precompressed terminal adapter and measuring junction connector; When measurement speed is <75kPa/s, only use the first charged electrical magnet valve, when measuring pressure speed >75kPa/s, use the first charged electrical magnet valve, the second charged electrical magnet valve, the 3rd charged electrical magnet valve and the 4th charged electrical magnet valve simultaneously;
Also comprise flow control valve, this flow control valve is located between charged electrical magnet valve group and mutation pressure relay to be measured, when measurement speed is 5kPa/s, and start velocity operation valve;
Make pressure by pre-press pump, while making pressure, open pre-pressure electromagnetic valve and be pre-stressed to more than 100kPa to accumulator, then gone to regulate by pre-pressure side vent valve and make it reach required working pressure; When operating rate is at 5kPa/s, the first charged electrical magnet valve is in adjustment state, the second charged electrical magnet valve, the 3rd charged electrical magnet valve, the 4th charging closed electromagnetic valve, at this moment, external flow control valve is connected to export and tested between; When operating rate is at 10kPa/s, 20kPa/s, 50kPa/s, 100kPa/s, 200kPa/s, first charged electrical magnet valve, the second charged electrical magnet valve, the 3rd charged electrical magnet valve and the 4th charged electrical magnet valve are in adjustment state respectively, at this moment, output be directly connected with tested, tested end pressure release is emptying by measuring junction vent valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408915.7A CN102890241B (en) | 2012-10-23 | 2012-10-23 | Gas circuit system for online checking device of mutation pressure relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408915.7A CN102890241B (en) | 2012-10-23 | 2012-10-23 | Gas circuit system for online checking device of mutation pressure relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102890241A CN102890241A (en) | 2013-01-23 |
| CN102890241B true CN102890241B (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210408915.7A Active CN102890241B (en) | 2012-10-23 | 2012-10-23 | Gas circuit system for online checking device of mutation pressure relay |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278312B (en) * | 2013-03-30 | 2015-07-01 | 国家电网公司 | Method and device for verifying pressure relief valve of transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397375Y (en) * | 2009-05-12 | 2010-02-03 | 上海电力变压器修试厂有限公司 | Pressure detection device for pressure relay |
| CN202547865U (en) * | 2012-03-28 | 2012-11-21 | 上海市电力公司 | Detection equipment of jump pressure sensor |
-
2012
- 2012-10-23 CN CN201210408915.7A patent/CN102890241B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397375Y (en) * | 2009-05-12 | 2010-02-03 | 上海电力变压器修试厂有限公司 | Pressure detection device for pressure relay |
| CN202547865U (en) * | 2012-03-28 | 2012-11-21 | 上海市电力公司 | Detection equipment of jump pressure sensor |
Non-Patent Citations (1)
| Title |
|---|
| 压力校验台系列;无;《www.9511.com.cn/index.php?optionid=145&auto_id=21》;20070220;全文 * |
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| CN102890241A (en) | 2013-01-23 |
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