CN102589819B - Leakage testing method for secondary air pressure of oil-immersed power transformer - Google Patents
Leakage testing method for secondary air pressure of oil-immersed power transformer Download PDFInfo
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- CN102589819B CN102589819B CN201210014231.9A CN201210014231A CN102589819B CN 102589819 B CN102589819 B CN 102589819B CN 201210014231 A CN201210014231 A CN 201210014231A CN 102589819 B CN102589819 B CN 102589819B
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- transformer
- air pressure
- oil
- 315kva
- pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The invention discloses a leakage testing method for secondary air pressure of an oil-immersed power transformer. The leakage testing method comprises the following main steps of: carrying out twice air-pressure leakage testing with different pressures and process methods on an oil tank of the transformer, and finally ensuring no leaking condition of the transformer. The leakage testing method has the advantages that the design is simple, the principle is clear, oil leakage of the transformer caused by the defect of the weld strength of the oil tank and the collision in the process of assembly and carry or improper assembly of sealing elements can be completely eliminated by twice leakage testing, the leakage testing effect is good, the cost is low and the safe and reliable effects are achieved.
Description
Technical field
The present invention relates to a kind of leak testing process of secondary air pressure of oil-immersed power transformer, belong to transformer technology field.
Background technology
Oil-immersed power transformer leakage of oil is its manufacture and operating FAQs, its seepage thin spot all will be got rid of, so that safety, reliability service during product linked network before product export.
Summary of the invention
The object of the present invention is to provide a kind of leak testing process of secondary air pressure of oil-immersed power transformer, avoided making because of leakage of oil transformer cisco unity malfunction problem.
The present invention adopts following technical scheme:
The leak testing process of secondary air pressure of oil-immersed power transformer, is characterized in that comprising the following steps:
(1) first the oil tank of transformer that welded is rejected to welding slag, check whether rosin joint and pore of outward appearance, oil tank of transformer is sealed;
(2) to aerating leak test in above-mentioned oil tank of transformer, pressure is that the above air pressure of 315KVA is 0.2MPa, 315KVA and following air pressure are 0.25MPa, after leak test 3-4 hour, check and have ne-leakage, if ne-leakage is by earth pressure release and be evacuated to-0.05MPa, keep again pressure being returned to initial pressure after 2.5-3.5 hour and keep 5 hours, the oil tank of transformer that there is no seepage is carried out to acid washing phosphorization processing, then carry out primer spray and finish paint;
(3) dry and fastening good transformer body is put into fuel tank hitch box along, add the transformer oil of figure paper weight 70%;
(4) above-mentioned transformer being lifted up into vacuum drying room be evacuated to-0.04MPa keeps hanging out vacuum drying room after 2 hours, transformer oil is added to the position needing, carry out secondary air pressure leak test, the above air pressure of 315KVA is 0.15MPa, 315KVA and following air pressure are 0.2MPa, keep after 10-14 hour, ne-leakage transformer can be put in storage.
The leak testing process of described secondary air pressure of oil-immersed power transformer, it is characterized in that: the pressure of twice described leak test gas and technique is difference to some extent all, that the above air pressure of 315KVA is 0.2MPa for the first time, 315KVA and following air pressure are 0.25MPa, leak test order is: be just pressed onto negative pressure and arriving malleation again, be that the above air pressure of 315KVA is 0.15MPa for the second time, 315KVA and following air pressure are 0.20MPa, and leak test order is: negative pressure is to malleation.
Beneficial effect of the present invention:
The inventive method simplicity of design, principle is clear, by twice leak test, can get rid of completely because of fuel tank weld strength defect and assembling handling process collision or fitting tight part improper, cause Leakage in Transformer oil, leak test is effective, cost is low, safe and reliable.
Embodiment
Embodiment 1: the leak testing process of secondary air pressure of oil-immersed power transformer, comprises the following steps:
(1) first the oil tank of transformer that welded is rejected to welding slag, check whether rosin joint and pore of outward appearance, oil tank of transformer is sealed;
(2) to aerating leak test in above-mentioned oil tank of transformer, pressure is that the above air pressure of 315KVA is 0.2MPa, 315KVA and following air pressure are 0.25MPa, after leak test 3-4 hour, check and have ne-leakage, if ne-leakage is by earth pressure release and be evacuated to-0.05MPa, keep again pressure being returned to initial pressure after 2.5-3.5 hour and keep 5 hours, the oil tank of transformer that there is no seepage is carried out to acid washing phosphorization processing, then carry out primer spray and finish paint;
(3) dry and fastening good transformer body is put into fuel tank hitch box along, add the transformer oil of figure paper weight 70%;
(4) above-mentioned transformer being lifted up into vacuum drying room be evacuated to-0.04MPa keeps hanging out vacuum drying room after 2 hours, transformer oil is added to the position needing, carry out secondary air pressure leak test, the above air pressure of 315KVA is 0.15MPa, 315KVA and following air pressure are 0.2MPa, keep after 10-14 hour, ne-leakage transformer can be put in storage.
Claims (2)
1. a leak testing process for secondary air pressure of oil-immersed power transformer, is characterized in that comprising the following steps:
(1) first the oil tank of transformer that welded is rejected to welding slag, check whether rosin joint and whether have pore of outward appearance, oil tank of transformer is sealed;
(2) to aerating leak test in above-mentioned oil tank of transformer, the above air pressure of 315KVA is 0.2MPa, 315KVA and following air pressure are 0.25MPa, after leak test 3-4 hour, check and have ne-leakage, if ne-leakage is by earth pressure release and be evacuated to-0.05MPa, keep again pressure being returned to initial pressure after 2.5-3.5 hour and keep 5 hours, the oil tank of transformer that there is no seepage is carried out to acid washing phosphorization processing, then carry out primer spray and finish paint;
(3) dry and fastening good transformer body is put into fuel tank hitch box along, add the transformer oil of figure paper weight 70%;
(4) above-mentioned transformer being lifted up into vacuum drying room be evacuated to-0.04MPa keeps hanging out vacuum drying room after 2 hours, transformer oil is added to the position needing, carry out secondary air pressure leak test, the above air pressure of 315KVA is 0.15MPa, 315KVA and following air pressure are 0.2MPa, keep after 10-14 hour, ne-leakage transformer can be put in storage.
2. the leak testing process of secondary air pressure of oil-immersed power transformer according to claim 1, it is characterized in that: the pressure of twice leak test gas and technique is difference to some extent all, that the above air pressure of 315KVA is 0.2MPa for the first time, 315KVA and following air pressure are 0.25MPa, leak test order is: be just pressed onto negative pressure and arriving malleation again, be that the above air pressure of 315KVA is 0.15MPa for the second time, 315KVA and following air pressure are 0.20MPa, and leak test order is: negative pressure is to malleation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014231.9A CN102589819B (en) | 2012-01-18 | 2012-01-18 | Leakage testing method for secondary air pressure of oil-immersed power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210014231.9A CN102589819B (en) | 2012-01-18 | 2012-01-18 | Leakage testing method for secondary air pressure of oil-immersed power transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102589819A CN102589819A (en) | 2012-07-18 |
| CN102589819B true CN102589819B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210014231.9A Expired - Fee Related CN102589819B (en) | 2012-01-18 | 2012-01-18 | Leakage testing method for secondary air pressure of oil-immersed power transformer |
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| CN (1) | CN102589819B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364150A (en) * | 2013-08-02 | 2013-10-23 | 江苏亨特集团华特电气有限公司 | Water pressure leakage check method for transformer oil tank |
| CN103674722B (en) * | 2013-12-18 | 2016-08-17 | 中国西电电气股份有限公司 | A kind of method of high intensity soldering and sealing fuel tank positive pressure test and positive pressure test system thereof |
| CN107449568A (en) * | 2017-09-29 | 2017-12-08 | 孙培丽 | A kind of oil-filled transformer pressurized seal detecting system |
| CN109323806A (en) * | 2018-11-20 | 2019-02-12 | 芜湖国睿兆伏电子有限公司 | A kind of oil-immersed transformer leakage test method |
| CN113504008B (en) * | 2021-07-13 | 2022-11-04 | 江铃汽车股份有限公司 | Detection method, detection test paper and reagent for automobile collision fuel leakage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224213A (en) * | 1989-02-27 | 1990-09-06 | Toshiba Corp | Transformer oil leakage alarm apparatus |
| CN201628612U (en) * | 2010-03-31 | 2010-11-10 | 王义明 | Pressure testing device of oil immersed transformer |
-
2012
- 2012-01-18 CN CN201210014231.9A patent/CN102589819B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224213A (en) * | 1989-02-27 | 1990-09-06 | Toshiba Corp | Transformer oil leakage alarm apparatus |
| CN201628612U (en) * | 2010-03-31 | 2010-11-10 | 王义明 | Pressure testing device of oil immersed transformer |
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| CN102589819A (en) | 2012-07-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ANHUI SHENHONG TRANSFORMER CO., LTD. Free format text: FORMER NAME: HEFEI SHENHONG TRANSFORMER CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: North Industrial Park, 237400 Anhui city of Lu'an province Huoqiu County Chengguan Town Patentee after: Anhui Shenhong Transformer Co., Ltd. Address before: North Industrial Park, 237400 Anhui city of Lu'an province Huoqiu County Chengguan Town Patentee before: Anhui Shenhong Transformer Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20190118 |