CN103579927B - Large-scale transformer coil internal diameter side nondestructive maintenance method - Google Patents
Large-scale transformer coil internal diameter side nondestructive maintenance method Download PDFInfo
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- CN103579927B CN103579927B CN201210248263.5A CN201210248263A CN103579927B CN 103579927 B CN103579927 B CN 103579927B CN 201210248263 A CN201210248263 A CN 201210248263A CN 103579927 B CN103579927 B CN 103579927B
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Abstract
The invention discloses a large-scale transformer coil internal diameter side nondestructive maintenance method which comprises that a whole-phase transformer coil with oil is de-oiled and dried; temperature of the transformer coil is maintained to be not lower than 80 DEG C, and all insulating products of a coil internal diameter side are marked in turn according to coil gears; molded insulating cylinders are pulled out of the coil by using a hoisting tool, the rest insulating products are taken out in turn, and the insulating products after being taken out are placed in a drying room and maintained to be 90 DEG C; fault points of the coil internal diameter side are inspected and repaired; all the insulating products are installed back into the coil in turn according to marks and inside-and-outside orders, the molded insulating cylinders are arranged on the upper end of the coil internal diameter side, and a coil pressing disc with weight of three tons is adopted to press the molded insulating cylinders into the coil in place so that maintenance of the transformer coil internal diameter side is completed. Nondestructive maintenance of the transformer coil internal diameter side is performed by the maintenance method so that destructive scrapping of the coil insulating products is avoided, maintenance efficiency is effectively enhanced, maintenance cost is reduced and safe and reliable operation of a transformer is ensured.
Description
Technical field
The present invention relates to a kind of large-scale transformer coil internal diameter side nondestructive maintenance method.
Background technology
At present both at home and abroad in Repair of Transformer industry, between large-scale transformer coil internal diameter side cake or turn-to-turn needs normal inspection
When inspection is repaiied, there is the difficult problem that cannot avoid, traditionally need to destroy the profiled insulation of transformer coil internal side diameter
After cylinder and multiple tracks insulation screen, inspection and the maintenance of transformer coil internal side diameter can be carried out.This need to spend substantial amounts of manpower and
Material resources, so general do not do inspection and the maintenance of transformer coil internal side diameter when carrying out Repair of Transformer, thus transformer wire
Circle there may be certain hidden danger, have impact on the safe and reliable operation of transformator.
High-power transformer coil in inspection and maintenance, as shown in figure 1, because coil 7 internal side diameter has profiled insulation cylinder 6 and many
Road insulation screen 5 and various insulation molding part, there are inner bracing strip 1, outer stay 2, oil clearance stay 3 and oil duct pad in various insulation molding parts
Block 4 etc., typically when internal coil diameter side is short-circuited or during insulation harm, in order to repair coil internal side diameter fault, can only be by coil
The profiled insulation cylinder 6 of internal side diameter and multiple tracks insulation screen 5 carry out cutting damage and scrap, and then take out the one-tenth of coil 7 internal side diameter
Type insulating cylinder 6, multiple tracks insulation screen 5 and each insulation molding part, then carry out transformer coil 7 internal side diameter inspection and maintenance.This biography
System method makes substantial amounts of coil insulated product scrap, and the cost of overhaul is high, and the repair time is tediously long；And because of substantial amounts of insulation system
Product need after scrapping to make new product through long-time, and physical dimension after cutting disassembling for the insulated product changes, to new product insulation
The determination of product manufactured size brings difficulty, new product manufactured size excessive or too small all will be unable to use, size too senior general is no
Method loads coil, and size is too little, affects being inserted in of coil, so often occurring the size that new product makes cannot meet requirement
Reforming occurs and continues to scrap in situation, and has a strong impact on the time between overhauls(TBO), causes huge direct and consequential damage.
Content of the invention
The technical problem to be solved is to provide a kind of large-scale transformer coil internal diameter side nondestructive maintenance method, profit
Implement the lossless maintenance of transformer coil internal side diameter with this repair method, it is to avoid the destructiveness of coil insulation product is scrapped, and has
Effect improves overhaul efficiency, reduces the cost of overhaul it is ensured that the safe and reliable operation of transformator.
For solving above-mentioned technical problem, large-scale transformer coil internal diameter side nondestructive maintenance method of the present invention includes walking as follows
Suddenly：
Step one, the whole phase transformer coil with oil is placed in coal oil vapor-phase drying room is dried carry out removing oil drying, removing oil is done
The dry time is 48 hours, and temperature is 105 DEG C；
Step 2, holding transformer coil temperature are not less than 80 DEG C, dried for removing oil coil is pressed coil gear and is becoming
Mark is carried out successively in type insulating cylinder, multiple tracks insulation screen and various insulation molding part；
Step 3, using profiled insulation cylinder hoisting tool special, profiled insulation cylinder is extracted in coil, and by coil
Multiple tracks insulation screen and various insulation molding part all take out successively, profiled insulation cylinder after taking-up, multiple tracks insulation screen and
Various insulation molding parts put in drying room and 90 DEG C of insulations；
Step 4, inspection and maintenance transformer coil internal side diameter, repair the trouble point of transformer coil internal side diameter；
In step 5, taking-up drying room, profiled insulation cylinder, multiple tracks insulation screen and various insulation molding part, multiple tracks insulation is enclosed
Screen and various insulation molding part are recovered to be installed in transformer coil by mark and inside and outside order, then by profiled insulation cylinder successively
It is arranged at transformer coil internal side diameter upper end, use plane bottom using 3 tons of deadweight, with diameter greater than the coil press mounting of profiled insulation cylinder
Disk, is placed on profiled insulation cylinder, relies on chassis deadweight, slowly profiled insulation cylinder is pressed in transformer coil and puts in place, complete
Become the maintenance of transformer coil internal side diameter.
Because large-scale transformer coil internal diameter side nondestructive maintenance method of the present invention employs technique scheme, oil will be carried
Whole phase transformer coil carry out removing oil drying, the time be 48 hours, temperature be 105 DEG C；Keep transformer coil temperature not low
In 80 DEG C, by coil gear, each insulated product of internal coil diameter side is carried out mark successively；Using lifting device by profiled insulation
Cylinder is extracted in coil, and remaining insulated product is all taken out successively, and the insulated product after taking-up is put into simultaneously 90 DEG C in drying room
Insulation；Check the trouble point repairing coil internal side diameter；Each insulated product is recovered to be installed on coil by mark and inside and outside order successively
Interior, then by profiled insulation cylinder located at internal coil diameter side upper end, using 3 tons of weight coil platens, profiled insulation cylinder is pressed in coil
And be pressed into place, complete the maintenance of transformer coil internal side diameter.This repair method implements the lossless maintenance of transformer coil internal side diameter,
The destructiveness avoiding coil insulation product is scrapped, and effectively increases overhaul efficiency, reduces the cost of overhaul it is ensured that transformator
Safe and reliable operation.
Brief description
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is transformer coil schematic cross-section.
Specific embodiment
Large-scale transformer coil internal diameter side nondestructive maintenance method of the present invention comprises the steps：
Step one, the whole phase transformer coil with oil is placed in coal oil vapor-phase drying room is dried carry out removing oil drying, removing oil is done
The dry time is 48 hours, and temperature is 105 DEG C；
Step 2, holding transformer coil temperature are not less than 80 DEG C, dried for removing oil coil is pressed coil gear and is becoming
Mark is carried out successively in type insulating cylinder, multiple tracks insulation screen and various insulation molding part；
Step 3, using profiled insulation cylinder hoisting tool special, profiled insulation cylinder is extracted in coil, and by coil
Multiple tracks insulation screen and various insulation molding part all take out successively, profiled insulation cylinder after taking-up, multiple tracks insulation screen and
Various insulation molding parts put in drying room and 90 DEG C of insulations；
Step 4, inspection and maintenance transformer coil internal side diameter, repair the trouble point of transformer coil internal side diameter；
In step 5, taking-up drying room, profiled insulation cylinder, multiple tracks insulation screen and various insulation molding part, multiple tracks insulation is enclosed
Screen and various insulation molding part are recovered to be installed in transformer coil by mark and inside and outside order, then by profiled insulation cylinder successively
It is arranged at transformer coil internal side diameter upper end, use plane bottom using 3 tons of deadweight, with diameter greater than the coil press mounting of profiled insulation cylinder
Disk, is placed on profiled insulation cylinder, relies on chassis deadweight, slowly profiled insulation cylinder is pressed in transformer coil and puts in place, complete
Become the maintenance of transformer coil internal side diameter.
This repair method ensure that all insulated products of transformer coil upkeep operation coil internal side diameter are intact
Take out it is possible to be continuing with the transformer coil after the completion of maintenance, it is to avoid occur in traditional overhaul process
Insulated product scrap caused by cost increase, ensured transformer coil maintenance be smoothed out, thus be transformer wire
The regular maintenance of circle internal side diameter or trouble shooting provide effective means, improve overhaul efficiency and repair quality.
Claims (1)
1. a kind of large-scale transformer coil internal diameter side nondestructive maintenance method is it is characterised in that this method comprises the steps：
Step one, the whole phase transformer coil with oil is placed in coal oil vapor-phase drying room is dried carry out removing oil drying, when removing oil is dried
Between be 48 hours, temperature be 105 DEG C；
Step 2, holding transformer coil temperature are not less than 80 DEG C, dried for removing oil coil are pressed coil gear exhausted in molding
Mark is carried out successively in edge cylinder, multiple tracks insulation screen and various insulation molding part；
Step 3, using profiled insulation cylinder hoisting tool special, profiled insulation cylinder is extracted in coil, and will be many in coil
Road insulation screen and various insulation molding part all take out successively, profiled insulation cylinder after taking-up, multiple tracks insulation screen and various
Insulation molding part puts in common drying room and 90 DEG C of insulations；
Step 4, inspection and maintenance transformer coil internal side diameter, repair the trouble point of transformer coil internal side diameter；
In step 5, the common drying room of taking-up, profiled insulation cylinder, multiple tracks insulation screen and various insulation molding part, multiple tracks insulation is enclosed
Screen and various insulation molding part are recovered to be installed in transformer coil by mark and inside and outside order, then by profiled insulation cylinder successively
It is arranged at transformer coil internal side diameter upper end, use plane bottom using 3 tons of deadweight, with diameter greater than the coil press mounting of profiled insulation cylinder
Disk, is placed on profiled insulation cylinder, relies on chassis deadweight, slowly profiled insulation cylinder is pressed in transformer coil and puts in place, complete
Become the maintenance of transformer coil internal side diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248263.5A CN103579927B (en) | 2012-07-18 | 2012-07-18 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248263.5A CN103579927B (en) | 2012-07-18 | 2012-07-18 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103579927A CN103579927A (en) | 2014-02-12 |
| CN103579927B true CN103579927B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210248263.5A Active CN103579927B (en) | 2012-07-18 | 2012-07-18 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101405820A (en) * | 2006-03-22 | 2009-04-08 | 纳幕尔杜邦公司 | Insulators for transformers |
| CN102064018A (en) * | 2010-11-24 | 2011-05-18 | 河南省电力公司南阳供电公司 | Damp-proof device for transformer overhauling operation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA030334B1 (en) * | 2009-10-30 | 2018-07-31 | Тбеа Хэнъян Трансформерз Ко., Лтд. | System and method for realizing kerosene gas phase drying to transformers assembled on-site |
-
2012
- 2012-07-18 CN CN201210248263.5A patent/CN103579927B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101405820A (en) * | 2006-03-22 | 2009-04-08 | 纳幕尔杜邦公司 | Insulators for transformers |
| CN102064018A (en) * | 2010-11-24 | 2011-05-18 | 河南省电力公司南阳供电公司 | Damp-proof device for transformer overhauling operation |
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| Publication number | Publication date |
|---|---|
| CN103579927A (en) | 2014-02-12 |
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Address after: No. 3520 Tongji Road, Baoshan District, Shanghai, 201900 Patentee after: Baowu equipment Intelligent Technology Co., Ltd Address before: 201900, 335, Pu Pu Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOSTEEL INDUSTRY TECHNOLOGICAL SERVICE Co.,Ltd. |
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