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Process and equipment for oil impregantion of transformer body

A transformer and body technology, applied in the field of transformer body oil immersion process, can solve the problems of transformer occupying workshop and capital, increasing transformer production cost, transformer user burden, etc., so as to reduce capital occupation, expand production capacity, and speed up delivery. effect of time

Active Publication Date: 2012-03-21
SHANDONG POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, the transformer occupies a large amount of factory buildings and funds, which makes the production efficiency very low and the production cycle is long, which relatively increases the production cost of the transformer and brings a great burden to the enterprise and the transformer user unit.

Method used

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  • Process and equipment for oil impregantion of transformer body
  • Process and equipment for oil impregantion of transformer body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An oil immersion equipment for a transformer body, including a pressure valve 2 connected to the oil tank 1 through a pressure pipe 8, connected to a compressor 3 through the pressure valve 2; and a vacuum pump connected to the oil tank 1 through a vacuum pipeline 9 The valve 4 is connected to the vacuum pump 5 through the vacuum valve 4; a pressure gauge 6 and a vacuum gauge 7 are arranged to connect with the oil tank. The above-mentioned interface connected with the fuel tank is arranged on the top of the fuel tank.

[0019] After buckling the cover of the transformer, fill the transformer with oil until the height from the top is H. This is the general practice of oil filling the transformer. Taking 500kV as an example, the value of H is 200mm.

[0020] At this time, the pressure inside the transformer is normal pressure, which is the same as the external air pressure. First open the vacuum valve, close the pressurization valve, the vacuum pump starts to work, vacuu...

Embodiment 2

[0023] An oil immersion equipment for a transformer body, including a pressure valve connected to the oil tank through a pressure pipeline, and connected to a compressor through the pressure valve; a vacuum valve connected to the oil tank through a vacuum pipeline, and connected through the vacuum valve to the vacuum pump; a pressure gauge and a vacuum gauge are provided to connect with the oil tank. The above-mentioned interface connected with the fuel tank is arranged on the top of the fuel tank.

[0024] After buckling the cover of the transformer, fill the transformer with oil until the height from the top is H. This is the general practice of oil filling the transformer. Taking 500kV as an example, the value of H is 200mm.

[0025] At this time, the pressure inside the transformer is normal pressure, which is the same as the external air pressure. First open the vacuum valve, close the pressurization valve, the vacuum pump starts to work, vacuumize the fuel tank, and mea...

Embodiment 3

[0028] An oil immersion equipment for a transformer body, including a pressure valve connected to the oil tank through a pressure pipeline, and connected to a compressor through the pressure valve; a vacuum valve connected to the oil tank through a vacuum pipeline, and connected through the vacuum valve to the vacuum pump; a pressure gauge and a vacuum gauge are provided to connect with the oil tank. The above-mentioned interface connected with the fuel tank is arranged on the top of the fuel tank.

[0029] After buckling the cover of the transformer, fill the transformer with oil until the height from the top is H. This is the general practice of oil filling the transformer. Taking 500kV as an example, the value of H is 200mm.

[0030] At this time, the pressure inside the transformer is normal pressure, which is the same as the external air pressure. First open the vacuum valve, close the pressurization valve, the vacuum pump starts to work, vacuumize the fuel tank, and mea...

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PUM

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Abstract

The invention relates to a process and equipment for oil impregnation of a transformer body. The process is applied after that a cover is buckled and oil is filled in the transformer to a level at a distance H from the top, and is characterized in comprising the following sequentially circulating steps:(1), the gas horizon with a height of H is vacuumed to a pressure P1 and the state t1 is kept;(2), the vacuum is broken to the pressure P2 and the state t2 is kept; and(3), pressuring the gas horizon to the pressure P3 and the state t3 is kept. The process and equipment for the oil impregnation of the transformer body of the invention adopt a pressure-changing method mode which improves the impregnability of transformer oil considerably, shortens the oil impregnation time and improves oil impregnation efficiency compared with static oil impregnation. Therefore, the static storage time of transformers in a factory building is shortened greatly; the occupied area of the factory building is reduced relatively; and the factory leaving time is shortened, that is, the productive capacity is improved and the capital overstock is reduced. The process and the equipment have obvious economic benefits and high popularization and application value.

Description

technical field [0001] The invention relates to an oil immersion process for a transformer body, in particular to the oil immersion process and leak test process in the transformer assembly process. Background technique [0002] The transformer manufacturing process generally needs to go through the process of oil immersion, general assembly, nitrogen filling and leak test. The purpose is to completely discharge the moisture and other impurities in the transformer body and detect whether there is oil leakage. Taking 500KV as an example, in order to reduce the dampness of the body during the general assembly process, the oil immersion process is required before the general assembly. After the tank is released, the cover is buckled, the vacuum is pumped to 40Pa, and the vacuum is maintained for 12 hours, and then the oil is filled to 200mm from the top, and continue to pump Vacuum for 12 hours, keep vacuum for 24 hours; in order to fully immerse the insulating parts in oil dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/00H01F27/30H01F27/00
Inventor 赵永志杨红燕王志明韩克俊王新刚
Owner SHANDONG POWER EQUIP