CN203606083U - Leakage testing device used for power transformer product sealing test - Google Patents
Leakage testing device used for power transformer product sealing test Download PDFInfo
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- CN203606083U CN203606083U CN201320851754.9U CN201320851754U CN203606083U CN 203606083 U CN203606083 U CN 203606083U CN 201320851754 U CN201320851754 U CN 201320851754U CN 203606083 U CN203606083 U CN 203606083U
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- pressure
- ball valve
- vacuum ball
- power transformer
- connecting pipeline
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Abstract
The utility model discloses a leakage testing device used for a power transformer product sealing test. The device comprises a pressure gauge, a connecting pipeline, a vacuum ball valve, a sealing connector, an installation flange and a pressure relief valve. A bottom of the connecting pipeline is fixed on the installation flange. A top of the connecting pipeline is fixedly connected to the pressure gauge. A left end of the connecting pipeline is fixedly connected to the vacuum ball valve and a right end is fixedly connected to the pressure relief valve. A left end of the vacuum ball valve is fixedly connoted to the sealing connector. The device possesses a pressure indication and overvoltage protection function and can accurately control the test pressure so that a permanent fuel tank damage generated because the pressure is too large is avoided.
Description
Technical field
The utility model relates to the device that a kind of transformer finished products leakage test is used.
Background technology
According to the regulation of GB 6451-2008 " oil-immersed power transformer technical parameter and requirement ", for guaranteeing the sealing property of fuel tank, oil conservater, find seepage oil drop, before dispatching from the factory, 10kV Class power transformer all should do Leak Off Test (LOT).In industry, most producers only carry out the water-filling leakage-testing under normal pressure to fuel tank before general assembly at present, part producer completes finished product general assembly (GA) at transformer and uses air compressor to carry out leak test, but owing to lacking suitable Work tool, the process of exerting pressure lacks accurately to be controlled, applied pressure does not reach GB requirement, causes and cannot find breakthrough; Exert pressure to exceed when GB requires and cause bellows wall expansion to restore, fuel tank is damaged.
Summary of the invention
The above problem existing in order to solve existing leak test technology, the utility model provides a kind of power transformer finished product leakage test leakage testing device that possesses pressure indication and overvoltage protection, and its technical scheme of taking is:
Comprise tensimeter, connecting line, Vacuum ball valve, joint for sealing connecting, mounting flange and pressure relief valve, the bottom of connecting line is fixed on mounting flange, the fixing tensimeter that is communicated with in top of connecting line, the fixing Vacuum ball valve that is communicated with of left end of connecting line, the fixing pressure relief valve that is communicated with of its right-hand member, the fixing communication seals connector of left end of Vacuum ball valve.
This device bottom is mounting flange, the oil level indicator seat that position is chosen in full-sealed transformer of exerting pressure is put, more than this position is positioned at pasta, can prevent that gas from directly entering transformer oil and produce bubble and relief pressure time, transformer oil sprays, joint flange to be threaded, and is equipped with O-ring seal with oil level indicator seat; Flange top is welded with connecting line, top setting pressure table, and Vacuum ball valve and pressure relief valve are installed respectively in both sides, respectively in order to air and the overvoltage protection of exerting pressure.This device has pressure indication and over-voltage protecting function, accurately Control experiment pressure and avoid the fuel tank permanent damage causing because pressure is excessive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is application drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, use weldless steel tube to be welded to connect pipeline 8, the bottom of connecting line 8 is fixed on mounting flange 11, the fixing tensimeter 7 that is communicated with in top of connecting line 8, the fixing Vacuum ball valve 9 that is communicated with of left end of connecting line 8, the fixing pressure relief valve 12 that is communicated with of its right-hand member, the fixing communication seals connector 10 of left end of Vacuum ball valve 9.
As shown in Figure 2, in the time carrying out Leak Off Test (LOT), need to be equipped with air compressor 1, gas-holder 2 and air cleaner 3, above three can use weldless steel tube air pipe line to connect successively, air cleaner 3 uses high pressure rubber hose 4 to connect joint for sealing connecting 10, mounting flange 11 is arranged on the oil level indicator seat of power transformer test specimen and puts, and is equipped with O-ring seal.Open Vacuum ball valve 9 and air compressor 1, exert pressure pressurized air is injected to power transformer test product 6 by air compressor 1, watch tensimeter 7 pressure values attentively, reach after the numerical value of exerting pressure, close Vacuum ball valve 9, high pressure rubber hose 4 and seal connector 10 are taken apart, carried out the Leak Off Test (LOT) of next bench teat product.
Can require to install the pressure relief valve 12 of the different pressures upper limit according to capacity, version, electric pressure leakage test and mechanical robustness testing pressure in GB GB 6451-2008 " oil-immersed power transformer technical parameter and requirement ", meet the requirement of different transformer Leak Off Test (LOT)s with this.
Claims (1)
1. a power transformer finished product leakage test leakage testing device, comprise tensimeter (7), connecting line (8), Vacuum ball valve (9), joint for sealing connecting (10), mounting flange (11) and pressure relief valve (12), it is characterized in that: the bottom of connecting line (8) is fixed on mounting flange (11), the fixing tensimeter (7) that is communicated with in top of connecting line (8), the fixing Vacuum ball valve (9) that is communicated with of left end of connecting line (8), the fixing pressure relief valve (12) that is communicated with of its right-hand member, the fixing communication seals connector (10) of left end of Vacuum ball valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851754.9U CN203606083U (en) | 2013-12-13 | 2013-12-13 | Leakage testing device used for power transformer product sealing test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851754.9U CN203606083U (en) | 2013-12-13 | 2013-12-13 | Leakage testing device used for power transformer product sealing test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606083U true CN203606083U (en) | 2014-05-21 |
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ID=50718749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320851754.9U Expired - Fee Related CN203606083U (en) | 2013-12-13 | 2013-12-13 | Leakage testing device used for power transformer product sealing test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203606083U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568080A (en) * | 2014-12-17 | 2015-04-29 | 芜湖金牛电气股份有限公司 | Detection device of transformer oil level gauge and working method of detection device |
| CN105258883A (en) * | 2015-11-18 | 2016-01-20 | 江西洪都航空工业集团有限责任公司 | Universal auxiliary oil tank pressurization measuring device |
| CN105547612A (en) * | 2016-01-29 | 2016-05-04 | 湖北欢达电气股份有限公司 | Transformer leakage testing device |
-
2013
- 2013-12-13 CN CN201320851754.9U patent/CN203606083U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568080A (en) * | 2014-12-17 | 2015-04-29 | 芜湖金牛电气股份有限公司 | Detection device of transformer oil level gauge and working method of detection device |
| CN105258883A (en) * | 2015-11-18 | 2016-01-20 | 江西洪都航空工业集团有限责任公司 | Universal auxiliary oil tank pressurization measuring device |
| CN105547612A (en) * | 2016-01-29 | 2016-05-04 | 湖北欢达电气股份有限公司 | Transformer leakage testing device |
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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: 20140521 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |