CN103680912A

CN103680912A - Post processing technology of transformer products

Info

Publication number: CN103680912A
Application number: CN201310720271.XA
Authority: CN
Inventors: 陈继浩; 王洋; 赵贺亮; 王彩娟; 聂鹏; 韩秀龙
Original assignee: 天威保变（秦皇岛）变压器有限公司
Priority date: 2013-12-24
Filing date: 2013-12-24
Publication date: 2014-03-26

Abstract

The invention relates to a post processing technology of transformer products, and belongs to the technical field of transformers. According to the technical scheme, a low-voltage winding (1) short-circuits through a low-voltage busing, a minimum tapping rated current is exerted to the head end of a high-voltage winding (2) through a high-voltage bushing, a coil of a transformer generates heat, an oil pump of a cooling device of the transformer is started at the same time, oil temperature of various positions in the whole transformer is uniform, when the coil of the transformer is heated electrically until the oil temperature of the top layer of the transformer reaches 70-75 DEG C, a vacuum oil filter (6) is started to carry out oil circulation, after oil circulates for 20 hours, an oil sample of the transformer is tested, the oil can stop circulating if the oil index meets the requirement, and if the oil index does not meet the requirement, the oil circulates continuously until the oil index meets the requirement. The windings are electrified to generate heat, hot oil circulation is combined, the oil immersion speed of insulation parts is improved, the oil filtering speed is improved, and time of the post processing technology is saved. Compared with the background art, the post processing technology of the transformer products has the advantage that the post processing time of the transformer products is shortened by about 200 hours, namely eight and a half days.

Description

A kind of final treatment techniques of power transformer product

Technical field

The present invention relates to a kind of final treatment techniques of power transformer product, belong to transformer technology field.

Background technology

Large-scale power transformer all can need to carry out post-processed, and the treatment process existing problems of background technology are: the large-scale power transformer final treatment techniques time is longer, and the post-processed cycle is long, and production efficiency is low.

Summary of the invention

The object of the invention provides a kind of final treatment techniques of power transformer product, utilizes winding energising to produce heat, in conjunction with Circulation and Hot Oil Spray, improve insulating part immersion oil speed, promote oil strain speed simultaneously, saved later stage process treatment time, solve the problems referred to above that exist in background technology.

Technical scheme of the present invention is: a kind of final treatment techniques of power transformer product, comprises following processing step: 1. transformer assembling final vacuum is processed, vacuum processing time 48h, 2. vacuum oil, 10 hours time, 3. transformer Circulation and Hot Oil Spray, by low-tension bushing by low pressure short circuit in winding, by bushing, at high pressure winding head end, apply minimum tap rated current, make transformer coil produce heat, simultaneously, open transformer cooling device oil pump, make interior each position oil temperature of whole transformer even, when transformer coil electric heating to transformer top-oil temperature reaches 70-75 ℃, open vacuum oil-filter and carry out oil circulation, circulate after 20 hours, getting transformer oil sample chemically examines, oil index meets the requirements and can stop circulation, as undesirable in oil index, continue circulation, until oil index meets the requirements, 4. transformer is quiet puts, 48 hours time.

Described transformer Circulation and Hot Oil Spray, utilizes winding electric heating, opens transformer cooling device oil pump, does not open fan, and improves temperature of oil in transformer, uses vacuum oil-filter to carry out oily circulating filtration to transformer simultaneously; Control top-oil temperature at 70-75 ℃, by control, apply the size of electric current, regulate oil temperature height.

Good effect of the present invention: utilize winding energising to produce heat, in conjunction with Circulation and Hot Oil Spray, improve insulating part immersion oil speed, promote oil strain speed simultaneously, saved later stage process treatment time; Compare with background technology, power transformer product post-processed time shorten of the present invention approximately 200 hours, closes 8.5 days.

Accompanying drawing explanation

Fig. 1 is embodiment of the present invention Transformer Winding principle of electric-heating figure;

Fig. 2 is embodiment of the present invention transformer electric heating circulation schematic diagram;

In figure: low pressure winding 1, high pressure winding head end 2, high voltage winding group end 3, transformer 4, oil conservator 5, vacuum oil-filter 6.

Embodiment

Below in conjunction with accompanying drawing, by embodiment, the invention will be further described

A final treatment techniques for power transformer product, comprises following processing step: 1. transformer assembling final vacuum is processed, vacuum processing time 48h, 2. vacuum oil, 10 hours time, 3. transformer Circulation and Hot Oil Spray, by low-tension bushing by 1 short circuit of low pressure winding, by bushing, at high pressure winding head end 2, apply minimum tap rated current, make transformer coil produce heat, simultaneously, open transformer cooling device oil pump, make interior each position oil temperature of whole transformer even, when transformer coil electric heating to transformer top-oil temperature reaches 70-75 ℃, open vacuum oil-filter 6 and carry out oil circulation, circulate after 20 hours, getting transformer oil sample chemically examines, oil index meets the requirements and can stop circulation, as undesirable in oil index, continue circulation, until oil index meets the requirements, 4. transformer is quiet puts, 48 hours time.

Claims

1. a final treatment techniques for power transformer product, is characterized in that comprising following processing step: 1. transformer assembling final vacuum is processed, vacuum processing time 48h, 2. vacuum oil, 10 hours time, 3. transformer Circulation and Hot Oil Spray, by low-tension bushing by low pressure winding (1) short circuit, by bushing, at high pressure winding head end (2), apply minimum tap rated current, make transformer coil produce heat, simultaneously, open transformer cooling device oil pump, make interior each position oil temperature of whole transformer evenly when transformer coil electric heating to transformer top-oil temperature reaches 70-75 ℃, open vacuum oil-filter (6) and carry out oil circulation, circulate after 20 hours, getting transformer oil sample chemically examines, oil index meets the requirements and can stop circulation, as undesirable in oil index, continue circulation, until oil index meets the requirements, 4. transformer is quiet puts, 48 hours time.

2. the final treatment techniques of a kind of power transformer product according to claim 1, it is characterized in that described transformer Circulation and Hot Oil Spray, utilize winding electric heating, open transformer cooling device oil pump, do not open fan, improve temperature of oil in transformer, use vacuum oil-filter to carry out oily circulating filtration to transformer simultaneously; Control top-oil temperature at 70-75 ℃, by control, apply the size of electric current, regulate oil temperature height.