CN101145445A - Transformer coil paint-dipping process - Google Patents
Transformer coil paint-dipping process Download PDFInfo
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- CN101145445A CN101145445A CNA2007100254169A CN200710025416A CN101145445A CN 101145445 A CN101145445 A CN 101145445A CN A2007100254169 A CNA2007100254169 A CN A2007100254169A CN 200710025416 A CN200710025416 A CN 200710025416A CN 101145445 A CN101145445 A CN 101145445A
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Abstract
A transformer winding dip-painting process is provided, which relates to the technical field of the dip painting process of transformer windings. The transformer windings undergo one dip-painting process as the following steps: placing a winding in a dip-painting pot; applying the dip-painting pot with the first-time compression, first-time pressure maintenance, first-time pressure relief, first-time evacuation and the first-time vacuum maintenance after evacuation, vacuum maintenance and painting; applying the dip-painting pot with the second-time compression, second-time pressure maintenance, second-time pressure relief, second-time evacuation and the second-time vacuum maintenance; applying the dip-painting pot with the third-time compression, third-time pressure maintenance, re-painting and third-time pressure relief after the above steps are completed; and finally taking the winding out of the dip-painting pot. The invention is characterized in that the pressure is increased up to 0.5-0.6MPa after the compression button is pressed at the first time and the increased pressure is applied to the dip-painting pot and maintained in the state for 3.5-4.5 hours, the pressure is released to the normal atmospheric pressure after the pressure maintenance is completed; and the pressure is increased up to 0.5-0.6MPa after the compression button is pressed at the second time and maintained in the state for 2.5-3.5 hours, and the pressure is released again to the normal atmospheric pressure after the pressure maintenance is completed.
Description
Technical field
The present invention relates to the technical field of transformer coil paint-dipping process.
Background technology
In coil paint-dipping process in the past, earlier coil is put into impregnating vessel, through vacuumizing, fidelity sky, defeated lacquer back to impregnating vessel carry out pressurization first time, pressurize for the first time, pressure release for the first time, vacuumize for the first time, the first time fidelity sky, then to impregnating vessel carry out second time pressurization, pressurize for the second time, pressure release for the second time, vacuumize for the second time, fidelity sky for the second time, after above operation is finished impregnating vessel is pressurizeed for the third time, pressurize for the third time, returns lacquer, pressure release for the third time, from impregnating vessel, take out coil at last.Have following problem through the coil that obtains behind the said process: coil paint-dipping is insufficient, the insulation property of the mechanical strength of coil and each interlayer, turn-to-turn have been had a strong impact on, limit three anti-(moistureproof, anti-salt fog, mildew-resistant) effect of product, caused partial discharge quantity bigger than normal.
Summary of the invention
The present invention seeks to intensifier coil mechanical strength, improved the insulation property of interlayer and turn-to-turn, the discharge capacity of ballast coil simultaneously.
Coil of the present invention is finished the following process of dipping lacquer process one time: earlier coil is put into impregnating vessel, through vacuumizing, fidelity sky, defeated lacquer back to impregnating vessel carry out pressurization first time, pressurize for the first time, pressure release for the first time, vacuumize for the first time, the first time fidelity sky, then to impregnating vessel carry out second time pressurization, pressurize for the second time, pressure release for the second time, vacuumize for the second time, fidelity sky for the second time, after above operation is finished impregnating vessel is pressurizeed for the third time, pressurize for the third time, returns lacquer, pressure release for the third time, from impregnating vessel, take out coil at last; After opening for the first time the pressurization knob, be forced into 0.5～0.6Mpa impregnating vessel is pressurizeed, and kept this state 3.5～4.5 hours, after pressurize finishes, rush down and be depressed into conventional atmospheric pressure; After opening for the second time the pressurization knob, be forced into 0.5～0.6Mpa and kept this state 2.5～3.5 hours, after pressurize finishes, rush down once more and be depressed into conventional atmospheric pressure.
The Best Times of the present invention's pressurize for the first time is 4 hours, and the Best Times of pressurize for the second time is 3 hours.
The present invention vacuumizes impregnating vessel, and being evacuated to residue air pressure is 0.1～0.2Pa, and keeps this state 2.5～3.5 hours.Slowly import impregnating varnish in impregnating vessel, impregnating varnish is transported to 200～300mm place, coil top, closes defeated lacquer valve.When vacuumizing for the first time is to close the button of finding time when the pressure in the impregnating vessel is evacuated to 550～650Pa, and keeps this state 25～35 minutes.Above-mentionedly rush down for the third time that to press be that the pressure in the impregnating vessel is let out to 0.18～0.23MPa.
The coil that the present invention produces by above-mentioned technical process, mechanical strength has obtained reinforcement, and strengthened the dielectric strength of each interlayer of coil windings, turn-to-turn, and make the product partial discharge quantity to be controlled in the 10Pc, coil can reach the requirement of three anti-(moistureproof, anti-salt fog, mildew-resistant) like this.The time of pressurization was increased to 3.5～4.5 hours from original 3 hours for the first time, the time of pressurization was increased to 2.5～3.5 hours from original 1 hour for the second time, and the pressure in the impregnating vessel after will at every turn pressurizeing all drops to conventional atmospheric pressure, be reduced to conventional atmospheric cyclic process through at least twice pressurization with pressure, make fully dipping lacquer of coil, strengthened the mechanical strength of coil.
Embodiment
Dipping lacquer process of coil:
1, opens impregnating vessel, the high-tension coil of just pulling out from vacuum drying oven is steadily vertically hung in the impregnating vessel, cover impregnating vessel, and screw cover.
2, open the button of finding time, impregnating vessel is vacuumized, being evacuated to residue air pressure is 0.1～0.2Pa, and keeps this state 2.5～3.5 hours (vacuumizing beginning to total time of defeated lacquer beginning must not be less than 4 hour).
3, open defeated lacquer valve, the impregnating varnish in the storage tank is transported in the impregnating vessel.Transport to 200～300mm place, coil top when impregnating varnish, close defeated lacquer valve, notice that defeated lacquer must slowly carry out.
4, pressurization for the first time: open the pressurization button, impregnating vessel is pressurizeed.Close the pressurization button when being forced into 0.5～0.6MPa, and keeping this state 3.5～4.5 hours, Best Times is 4 hours.
5, open the pressure release button, the pressure in the impregnating vessel is let out to conventional atmospheric pressure, close the pressure release button.
6, open the button of finding time, impregnating vessel is vacuumized, close when being evacuated to 550～650Pa and vacuumize button, and kept this state 25～35 minutes.
7, pressurization for the second time: open the pressurization button, impregnating vessel is pressurizeed.Close the pressurization button when being forced into 0.5～0.6MPa, and keeping this state 2.5～3.5 hours, Best Times is 3 hours.
8, open the pressure release button, the pressure in the impregnating vessel is let out to conventional atmospheric pressure, close the pressure release button.The unlatching button of finding time vacuumizes impregnating vessel, closes the button of finding time when being evacuated to 550～650Pa, and keeps this state 25～35 minutes.
9, pressurization for the third time: open the pressurization button, impregnating vessel is pressurizeed.When being forced into 0.5-0.6MPa, close the pressurization button, and kept this state 0.5～1.5 hour.
10, open the pressure release button, the pressure in the impregnating vessel is let out to O.18-0.22MPa, close the pressure release button.
11, open defeated lacquer valve, impregnating varnish is got back in the storage paint can fully, close defeated lacquer valve.
12, open the pressure release button, the pressure in the impregnating vessel is let out to conventional atmospheric pressure, close the pressure release button.
13, open the dipping lacquer cover, coil is steadily vertically hung on the pallet of baking oven flat car, and push baking oven, wait for one-step solidification.
By above process modification, the product partial discharge quantity is controlled in the 10pc now.
Claims (6)
1. transformer coil paint-dipping process, coil is finished the following process of dipping lacquer process one time: earlier coil is put into impregnating vessel, through vacuumizing, the fidelity sky, the pressurization first time is carried out to impregnating vessel in defeated lacquer back, pressurize for the first time, pressure release for the first time, vacuumize for the first time, fidelity sky for the first time, then impregnating vessel is carried out the pressurization second time, pressurize for the second time, pressure release for the second time, vacuumize for the second time, fidelity sky for the second time, after above operation is finished impregnating vessel is pressurizeed for the third time, pressurize for the third time, return lacquer, coil is taken out in pressure release for the third time at last from impregnating vessel; It is characterized in that: after opening for the first time the pressurization knob, be forced into 0.5～0.6Mpa impregnating vessel is pressurizeed, and kept this state 3.5～4.5 hours, after pressurize finishes, rush down and be depressed into conventional atmospheric pressure; After opening for the second time the pressurization knob, be forced into 0.5～0.6Mpa and kept this state 2.5～3.5 hours, after pressurize finishes, rush down once more and be depressed into conventional atmospheric pressure.
2. transformer coil paint-dipping process according to claim 1 is characterized in that the Best Times of pressurize for the first time is 4 hours, and the Best Times of pressurize for the second time is 3 hours.
3. transformer coil paint-dipping process according to claim 1 is characterized in that impregnating vessel is vacuumized, and being evacuated to residue air pressure is 0.1～0.2Pa, and keeps this state 2.5～3.5 hours.
4. transformer coil paint-dipping process according to claim 1 is characterized in that slowly importing impregnating varnish in impregnating vessel, impregnating varnish is transported to 200～300mm place, coil top, closes defeated lacquer valve.
5. transformer coil paint-dipping process according to claim 1, it is characterized in that vacuumizing the above-mentioned first time is to close the button of finding time when the pressure in the impregnating vessel is evacuated to 550～650Pa, and keeps this state 25～35 minutes.
6. transformer coil paint-dipping process according to claim 1 is characterized in that above-mentionedly rushing down for the third time that to press be that the pressure in the impregnating vessel is let out to 0.18～0.23MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100254169A CN101145445A (en) | 2007-07-27 | 2007-07-27 | Transformer coil paint-dipping process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100254169A CN101145445A (en) | 2007-07-27 | 2007-07-27 | Transformer coil paint-dipping process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101145445A true CN101145445A (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100254169A Pending CN101145445A (en) | 2007-07-27 | 2007-07-27 | Transformer coil paint-dipping process |
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| CN (1) | CN101145445A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699586B (en) * | 2009-10-22 | 2013-01-30 | 四川泛华航空仪表电器有限公司 | Insulated impregnating process for high-frequency transformers |
| CN105097272A (en) * | 2015-09-11 | 2015-11-25 | 中变集团上海变压器有限公司 | Vacuum pressure paint-soaking process for dry-type transformer coil |
| CN108461279A (en) * | 2018-02-12 | 2018-08-28 | 江苏华辰变压器股份有限公司 | A kind of normal pressure dipping lacquer vacuum degassing process of transformer coil |
| CN108565113A (en) * | 2018-01-03 | 2018-09-21 | 常州市南方电器元件厂有限公司 | A kind of fixed inductance coil noise reducing technique |
| WO2020056786A1 (en) * | 2018-09-20 | 2020-03-26 | 南通明月电器有限公司 | Varnishing process for electromagnet coil |
-
2007
- 2007-07-27 CN CNA2007100254169A patent/CN101145445A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699586B (en) * | 2009-10-22 | 2013-01-30 | 四川泛华航空仪表电器有限公司 | Insulated impregnating process for high-frequency transformers |
| CN105097272A (en) * | 2015-09-11 | 2015-11-25 | 中变集团上海变压器有限公司 | Vacuum pressure paint-soaking process for dry-type transformer coil |
| CN105097272B (en) * | 2015-09-11 | 2017-03-08 | 中变集团上海变压器有限公司 | A kind of dry-type transformer coil vacuum pressure formula paint-dipping process |
| CN108565113A (en) * | 2018-01-03 | 2018-09-21 | 常州市南方电器元件厂有限公司 | A kind of fixed inductance coil noise reducing technique |
| CN108565113B (en) * | 2018-01-03 | 2020-08-11 | 常州市南方电器元件厂有限公司 | Noise reduction process for fixed inductor coil |
| CN108461279A (en) * | 2018-02-12 | 2018-08-28 | 江苏华辰变压器股份有限公司 | A kind of normal pressure dipping lacquer vacuum degassing process of transformer coil |
| CN108461279B (en) * | 2018-02-12 | 2020-01-24 | 江苏华辰变压器股份有限公司 | Normal-pressure paint dipping and vacuum degassing process for transformer coil |
| WO2020056786A1 (en) * | 2018-09-20 | 2020-03-26 | 南通明月电器有限公司 | Varnishing process for electromagnet coil |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20080319 |