CN105140014A - Method for oil injection of liquid immersed type distribution transformer - Google Patents
Method for oil injection of liquid immersed type distribution transformer Download PDFInfo
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- CN105140014A CN105140014A CN201510611129.0A CN201510611129A CN105140014A CN 105140014 A CN105140014 A CN 105140014A CN 201510611129 A CN201510611129 A CN 201510611129A CN 105140014 A CN105140014 A CN 105140014A
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Abstract
The invention discloses a method for oil injection of a liquid immersed type distribution transformer. The method comprises the following steps: the first step of finishing assembly of a transformer which is to undergo oil injection, and carrying the transformer to a presoaking liquid area; the second step of immersing a transformer body in the first step in oil in the presence of air; the third step of carrying the transformer in the second step to the vacuum environment, performing vacuum-pumping treatment on a transformer oil tank on the required process conditions, maintaining the vacuum for a period of time when the vacuum degree reaches a set value; the fourth step of carrying the transformer in the third step to an injection area, and performing supplemented injection to the vacuumized oil tank in the air until the liquid fills the oil tank. According to the method for oil injection, first in the air the transformer oil tank is filled with oil, then the transformer is placed in a vacuum tank or a pouring tank to be vacuumized, finally liquid supplementing is performed, so that the air in the oil tank can be discharged thoroughly, and the performance of the transformer is guaranteed. According to the method for oil injection, the operation process is also greatly simplified, and the oil injection efficiency is improved.
Description
Technical field
The present invention relates to a kind of correction oil injection method of liquid immersion type distribution transformer, belong to field of power transformer manufacture.
Background technology
Liquid soaking transformer in the market all adopts the oiling of vacuum oil mode, and vacuum oil mode comprises following step: (1) by transformer device swing to vacuum impregnating grease chamber; (2) place oil fuel tube and fixedly secure, placing oil level probe, close vacuum impregnating You Shimen; (3) vacuum oil parameter is set; (4) vacuumize by technological requirement, when vacuum degree reaches set point, close oil storage tank and oil-filling cavity's vacuum degree valve, and to carry out in lubricating can pressurize 15min and more than; (5) open corresponding oil filling pipeline valve, start vacuum oil; (6) observe oiling liquid level and stop oiling close to during specified altitude assignment; (7) the empty 15min of fidelity, then successively abolishes the vacuum of oil-filling cavity and oil storage tank; (8) transformer goes out tank, setting pressure relief valve.
This oiling technique is high to professional equipment requirement, investment is large, and require high to the standard operation of operating personnel, operating process is complicated.Meanwhile, start to vacuumize after filling oil, the time is long, needs quietly to put 12 hours just vacuum-pumpings after oiling, and the required stand-by period is long, and oiling efficiency is low, and most importantly, existing oiling technique is unfavorable for the air in fuel tank to drain, thus affects the quality of transformer.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of novel liquid immersion type distribution transformer correction oil injection method, and this correction oil injection method operating process is simple, and oiling efficiency is high, can be good at the air in fuel tank to drain.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
The correction oil injection method of liquid immersion type distribution transformer, comprises the steps:
Step 1, by treating that the transformer of oiling has assembled, is transported to presoak region;
Step 2, immerses in fluid by the transformer body of step 1 in atmosphere;
Step 3, is transported in vacuum environment by the transformer of step 2, under required process conditions, vacuumizes process to oil tank of transformer, when vacuum degree reaches set point, and fidelity empty a period of time;
Step 4, is transported to injection zone by the transformer of step 3, carries out after-teeming, until liquid fills fuel tank in atmosphere to the fuel tank after vacuumizing.
Wherein, in step 3, described vacuum degree set point is 1000pa.
Wherein, in step 3, described guarantor's vacuum time is 15min or is greater than 15min.
Wherein, in step 3, the concrete operation step of described fidelity sky for closing oil storage tank and oil-filling cavity's vacuum degree valve, and carries out pressurize in oil-filling cavity.
Beneficial effect: the present invention compared with prior art, have the following advantages: oiling technique of the present invention changes the requirement that conventional vacuum oiling technique needs oiling under vacuum conditions, correction oil injection method of the present invention adopts first in atmosphere by oil tank of transformer injecting oil liquid, and then transformer put in vacuum tank or oil-filling cavity vacuumize, last method of carrying out fluid infusion again, thus the air can thoroughly discharged in fuel tank, and then ensure the performance of transformer, correction oil injection method of the present invention also greatly simplify operating process simultaneously, improves oiling efficiency.
Embodiment
Below the present invention is further described.
Embodiment 1:
The correction oil injection method of liquid immersion type distribution transformer of the present invention, comprises the steps:
Step 1, by treating that the transformer of oiling has assembled, is transported to presoak region;
Step 2, immerses in fluid by the transformer body of step 1 in atmosphere;
Step 3, the transformer of step 2 is transported in vacuum environment, under required process conditions, vacuumizing process to oil tank of transformer, (this place does not need specific vacuum oil equipment, as long as the equipment that can vacuumize), when vacuum degree reaches set point 1000pa, close oil storage tank and oil-filling cavity's vacuum degree valve, and carry out pressurize 15min or more than 15min in oil-filling cavity;
Step 4, is transported to injection zone by the transformer of step 3, carries out after-teeming, until liquid fills fuel tank in atmosphere to the fuel tank after vacuumizing.
To adopting the fuel tank of embodiment 1 correction oil injection method to detect, the result the obtained air content that to be the air content in fuel tank be in 0%(oil tank of transformer obtains by carrying out chromatography to the oil in oil tank of transformer).
(require there is no air in oil tank of transformer, when there being air in fuel tank, can bubble electric discharge be produced at the trial, making transformer easily breakdown.）
Comparative example 1:
Liquid immersion type distribution transformer vacuum oil method, comprises the following steps:
Step 1, by transformer device swing to vacuum impregnating grease chamber;
Step 2, places oil fuel tube and fixedly secures, and places oil level probe, closes vacuum impregnating You Shimen;
Step 3, arranges vacuum oil parameter; Vacuumize by technological requirement, when vacuum degree reaches set point 1000pa, close oil storage tank and oil-filling cavity's vacuum degree valve, and carry out more than pressurize 15min in oil-filling cavity;
Step 4, opens corresponding oil filling pipeline valve, starts vacuum oil;
Step 5, observes oiling liquid level and stops oiling close to during specified altitude assignment;
Step 6, the empty 15min of fidelity, then successively abolishes the vacuum of oil-filling cavity and oil storage tank;
Step 7, transformer goes out tank, setting pressure relief valve.
To adopting the fuel tank of comparative example 1 vacuum oil method to detect, the result obtained is the air content in fuel tank is 0.5%.
Learn from embodiment 1 and comparative example 1, correction oil injection method of the present invention simplifies the operating process of oiling, improve oiling efficiency, change the requirement that conventional vacuum oiling technique needs oiling under vacuum conditions simultaneously, but also the air can better discharged thoroughly in fuel tank, and then effectively ensure that the performance of transformer.
Claims (4)
1. the correction oil injection method of liquid immersion type distribution transformer, is characterized in that, comprises the steps:
Step 1, by treating that the transformer of oiling has assembled, is transported to presoak region;
Step 2, immerses in fluid by the transformer body of step 1 in atmosphere;
Step 3, is transported in vacuum environment by the transformer of step 2, under required process conditions, vacuumizes process to oil tank of transformer, when vacuum degree reaches set point, and fidelity empty a period of time;
Step 4, is transported to injection zone by the transformer of step 3, carries out after-teeming, until liquid fills fuel tank in atmosphere to the fuel tank after vacuumizing.
2. the correction oil injection method of liquid immersion type distribution transformer according to claim 1, it is characterized in that, in step 3, described vacuum degree set point is 1000pa.
3. the correction oil injection method of liquid immersion type distribution transformer according to claim 1, it is characterized in that, in step 3, described guarantor's vacuum time is 15min or is greater than 15min.
4. the correction oil injection method of liquid immersion type distribution transformer according to claim 1, is characterized in that, in step 3, the concrete operation step of described fidelity sky for closing oil storage tank and oil-filling cavity's vacuum degree valve, and carries out pressurize in oil-filling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611129.0A CN105140014A (en) | 2015-09-24 | 2015-09-24 | Method for oil injection of liquid immersed type distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611129.0A CN105140014A (en) | 2015-09-24 | 2015-09-24 | Method for oil injection of liquid immersed type distribution transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105140014A true CN105140014A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510611129.0A Pending CN105140014A (en) | 2015-09-24 | 2015-09-24 | Method for oil injection of liquid immersed type distribution transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461268A (en) * | 2018-03-09 | 2018-08-28 | 江苏华辰变压器股份有限公司 | A kind of oil-immersed transformer normal pressure oiling vacuum degassing process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3894171A (en) * | 1972-11-23 | 1975-07-08 | British Oxygen Co Ltd | Electrical transformers |
| CN201387352Y (en) * | 2009-05-08 | 2010-01-20 | 上海电力变压器修试厂有限公司 | Oil level display device of transformer with vacuum oil injection |
| CN102360756A (en) * | 2011-09-19 | 2012-02-22 | 南车戚墅堰机车有限公司 | Vacuum drying oiling method for main transformer of electric locomotive |
| CN103123850A (en) * | 2013-03-01 | 2013-05-29 | 山东达驰电气有限公司 | Transformer half-vacuum oiling device and technology thereof |
| CN104517702A (en) * | 2014-12-30 | 2015-04-15 | 上海一电变压器有限公司 | Oil injection process for oil-immersed transformer |
-
2015
- 2015-09-24 CN CN201510611129.0A patent/CN105140014A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3894171A (en) * | 1972-11-23 | 1975-07-08 | British Oxygen Co Ltd | Electrical transformers |
| CN201387352Y (en) * | 2009-05-08 | 2010-01-20 | 上海电力变压器修试厂有限公司 | Oil level display device of transformer with vacuum oil injection |
| CN102360756A (en) * | 2011-09-19 | 2012-02-22 | 南车戚墅堰机车有限公司 | Vacuum drying oiling method for main transformer of electric locomotive |
| CN103123850A (en) * | 2013-03-01 | 2013-05-29 | 山东达驰电气有限公司 | Transformer half-vacuum oiling device and technology thereof |
| CN104517702A (en) * | 2014-12-30 | 2015-04-15 | 上海一电变压器有限公司 | Oil injection process for oil-immersed transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461268A (en) * | 2018-03-09 | 2018-08-28 | 江苏华辰变压器股份有限公司 | A kind of oil-immersed transformer normal pressure oiling vacuum degassing process |
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Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |