CN102497069A - Vacuum pressure impregnating insulating method - Google Patents
Vacuum pressure impregnating insulating method Download PDFInfo
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- CN102497069A CN102497069A CN201110430477XA CN201110430477A CN102497069A CN 102497069 A CN102497069 A CN 102497069A CN 201110430477X A CN201110430477X A CN 201110430477XA CN 201110430477 A CN201110430477 A CN 201110430477A CN 102497069 A CN102497069 A CN 102497069A
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- impregnating vessel
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Abstract
The invention discloses a vacuum pressure impregnating insulating method. the vacuum pressure impregnating insulating method comprises the following steps of: (1) vacuumizing; (2) conveying paint; (3) pressurizing and paint impregnating; (4) repeating to paint for the first time; (5) dripping paint; (6) repeating to paint for the second time; (7) discharging a workpiece from a jar; and (8) baking. After the workpiece is processed by the method provided by the invention, the content of a low molecular volatile matter in resin is lower than 2 percent, so that an environment-friendly requirement is further met, the thickness of an insulating layer is reduced by 10 percent and the dielectrical property is improved by 10 percent; and a conventional pre-baking process is saved, the production efficiency is improved, and the production cost is reduced to 3 percent of the production value of a product.
Description
Technical field
The present invention relates to a kind of method of insulation processing, particularly relate to a kind of insulating treatment method that adopts vacuum pressure impregnation.
Background technology
In the manufacturing process of motor, need carry out insulation processing to the winding stator core that has of motor.In the prior art, high-voltage motor is had in the technology of winding stator core insulation processing, need under 90 ℃ condition, carry out preliminary drying 3 hours to the winding stator core is arranged, and then carry out vacuum pressure impregnation, so production efficiency is low.On the other hand, existing treatment process, the poor permeability of insulation, the partial discharge quantity of winding is big, the temperature rise of motor.
Therefore those skilled in the art are devoted to develop the vacuum pressure varnished insulation processing method that a kind of production efficiency is high, treatment effect is good.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides the vacuum pressure varnished insulation processing method that a kind of production efficiency is high, treatment effect is good.
For realizing above-mentioned purpose, the invention provides a kind of vacuum pressure varnished insulation processing method, may further comprise the steps:
(1) vacuumizes: workpiece is inserted in the impregnating vessel, impregnating vessel is evacuated to jar internal pressure a 20～100Pa, and kept this vacuum degree 2.5～4 hours;
(2) defeated lacquer: in impregnating vessel, import epoxy anhydride vacuum pressure impregnation resin from compound storage tank, workpiece is flooded;
(3) pressurization dipping lacquer: the pressure in the impregnating vessel is adjusted to 0.55～0.6Mpa, and under this pressure, kept 2～4 hours;
(4) once return lacquer: the epoxy anhydride vacuum pressure impregnation resin in the impregnating vessel is back in the compound storage tank;
(5) drip lacquer: make the epoxy anhydride vacuum pressure impregnation resin on the workpiece drop to the impregnating vessel bottom naturally;
(6) secondary returns lacquer: the epoxy anhydride vacuum pressure impregnation resin of impregnating vessel bottom is back in the compound storage tank;
(7) workpiece goes out jar;
(8) cure: workpiece is inserted in the baking oven, and in baking oven, be placed with volatility tertiary amines promoter, cured 13～16 hours.
Preferable, in the step (1), vacuum degree is 60Pa, the time that keeps this vacuum degree is 3 hours;
In the step (3), the impregnating vessel internal pressure is 0.6Mpa, and the duration of this pressure is 3 hours;
In the step (4), the pressure of impregnating vessel is adjusted into 0.2～0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
In the step (5), kept normal pressure 0.5 hour in the impregnating vessel;
In the step (6), the pressure of impregnating vessel is adjusted into 0.2～0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
In the step (7), after the workpiece taking-up, cover impregnating vessel immediately;
In the step (8), said volatility tertiary amines promoter is arranged is N, and N-dimethyl benzylamine and alcohols solvent mixed solution are according to 400g/10m
3Amount place in the said baking oven.
The invention has the beneficial effects as follows: workpiece is after the related PROCESS FOR TREATMENT of the present invention, and low molecular weight volatile part of resin has further been satisfied environmental requirement less than 2%, the reduced thickness of insulating barrier 10%, dielectric property have improved 10%; The present invention has simultaneously reduced original preliminary drying and has handled, and has improved production efficiency, and production cost is reduced to 3% of product value.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Embodiment 1: a kind of vacuum pressure varnished insulation processing method may further comprise the steps:
(1) vacuumizes: workpiece is inserted in the impregnating vessel, impregnating vessel is evacuated to a jar internal pressure 60Pa, and kept this vacuum degree 3 hours;
(2) defeated lacquer: according to 0.6m
3The flow of/min is imported epoxy anhydride vacuum pressure impregnation resin 30min from compound storage tank in impregnating vessel, workpiece is flooded;
(3) pressurization dipping lacquer: the pressure in the impregnating vessel is adjusted to 0.6Mpa, and under this pressure, kept 3 hours;
(4) once return lacquer: the pressure of impregnating vessel is adjusted into 0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
(5) drip lacquer: kept normal pressure 0.5 hour in the impregnating vessel, make the epoxy anhydride vacuum pressure impregnation resin on the workpiece drop to the impregnating vessel bottom naturally;
(6) secondary returns lacquer: the pressure of impregnating vessel is adjusted into 0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
(7) workpiece goes out jar; Cover impregnating vessel immediately;
(8) cure: workpiece is inserted in the baking oven, and four corners placement N in baking oven, N-dimethyl benzylamine and alcohols solvent mixed solution are according to 400g/10m
3Amount place in the baking oven, cured 13～16 hours.
In the step (8), adopt N, N-dimethyl benzylamine and alcohols solvent mixed solution are as curing accelerator.Under the promoter condition, the anhydride-cured reaction is that initiation reaction begins with the attack of tertiary amines promoter to acid anhydrides, accelerates epoxy anhydride vacuum pressure impregnation resin curing process.Its key reaction has:
1, promoter attack acid anhydrides generates carbocation: see formula (1)
2, carbocation and epoxy reaction generate the alcoxyl anion: see formula (2)
3, alcoxyl anion and other acid anhydrides react, the regeneration carbocation: see formula (3)
When promoter existed, the epoxy resin cure reaction was arranged by the interior hydroxyl concentration of system also, but reaction speed depends on the concentration of tertiary amine.Reaction generates ester bond because tertiary amine exists down, and suppresses etherification reaction.This moment, acid anhydrides was the chemical theory amount to the suitable amounts of epoxy resin.
Embodiment 2～6: embodiment 2～7 processing steps are identical with embodiment 1, and technological parameter is as shown in the table:
NM technological parameter among the embodiment 2～7 shown in the table 1 is identical with embodiment 1.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technical staff in the art all should be in the determined protection range by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (2)
1. vacuum pressure varnished insulation processing method is characterized in that: may further comprise the steps:
(1) vacuumizes: workpiece is inserted in the impregnating vessel, impregnating vessel is evacuated to jar internal pressure a 20～100Pa, and kept this vacuum degree 2.5～4 hours;
(2) defeated lacquer: in impregnating vessel, import epoxy anhydride vacuum pressure impregnation resin from compound storage tank, workpiece is flooded;
(3) pressurization dipping lacquer: the pressure in the impregnating vessel is adjusted to 0.55～0.6Mpa, and under this pressure, kept 2～4 hours;
(4) once return lacquer: the epoxy anhydride vacuum pressure impregnation resin in the impregnating vessel is back in the compound storage tank;
(5) drip lacquer: make the epoxy anhydride vacuum pressure impregnation resin on the workpiece drop to the impregnating vessel bottom naturally;
(6) secondary returns lacquer: the epoxy anhydride vacuum pressure impregnation resin of impregnating vessel bottom is back in the compound storage tank;
(7) workpiece goes out jar;
(8) cure: workpiece is inserted in the baking oven, and in baking oven, be placed with volatility tertiary amines promoter, cured 13～16 hours.
2. vacuum pressure varnished insulation processing method as claimed in claim 1 is characterized in that:
In the step (1), vacuum degree is 60Pa, and the time that keeps this vacuum degree is 3 hours;
In the step (3), the impregnating vessel internal pressure is 0.6Mpa, and the duration of this pressure is 3 hours;
In the step (4), the pressure of impregnating vessel is adjusted into 0.2～0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
In the step (5), kept normal pressure 0.5 hour in the impregnating vessel;
In the step (6), the pressure of impregnating vessel is adjusted into 0.2～0.3Mpa, utilizes the pressure reduction of impregnating vessel and compound storage tank, epoxy anhydride vacuum pressure impregnation resin is back in the compound storage tank;
In the step (7), after the workpiece taking-up, cover impregnating vessel immediately;
In the step (8), said volatility tertiary amines promoter is arranged is N, and N-dimethyl benzylamine and alcohols solvent mixed solution are according to 400g/10m
3Amount place in the said baking oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430477XA CN102497069A (en) | 2011-12-20 | 2011-12-20 | Vacuum pressure impregnating insulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430477XA CN102497069A (en) | 2011-12-20 | 2011-12-20 | Vacuum pressure impregnating insulating method |
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| CN102497069A true CN102497069A (en) | 2012-06-13 |
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| CN201110430477XA Pending CN102497069A (en) | 2011-12-20 | 2011-12-20 | Vacuum pressure impregnating insulating method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876106A (en) * | 2012-09-28 | 2013-01-16 | 中国船舶重工集团公司第七一二研究所 | Filming accelerant solution for motor insulating varnish and filming method for insulating vanish before curing of motor |
| CN103326525A (en) * | 2013-06-27 | 2013-09-25 | 南车株洲电力机车研究所有限公司 | Vacuum pressure paint dipping device and method for motor belt motor base stator windings |
| CN103401335A (en) * | 2013-07-31 | 2013-11-20 | 东方电气（乐山）新能源设备有限公司 | Doubly-fed wind-driven generator insulation system and manufacturing method thereof |
| CN103542892A (en) * | 2013-10-28 | 2014-01-29 | 哈尔滨电机厂有限责任公司 | Evaluation method of vacuum pressure impregnating resin |
| CN104868666A (en) * | 2015-04-30 | 2015-08-26 | 株洲南车机电科技有限公司 | Primary insulation processing method for linear motor for rail traffic vehicle |
| CN106881237A (en) * | 2015-12-16 | 2017-06-23 | 株洲时代新材料科技股份有限公司 | Vacuum hydraulic immersion system and dipping method |
| CN107947505A (en) * | 2017-11-27 | 2018-04-20 | 无锡华盛力通电驱动系统有限公司 | Motor-stator dipped lacquer technique |
| CN111354563A (en) * | 2020-04-14 | 2020-06-30 | 全球能源互联网研究院有限公司 | Iron core for anode saturable reactor, preparation method and anode saturable reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1420506A (en) * | 2001-11-20 | 2003-05-28 | 上海电器科学研究所 | Vacuum continuous dipping insulation process |
| CN101086922A (en) * | 2007-04-20 | 2007-12-12 | 上海同立电工材料有限公司 | A vacuum balance method of vacuum pressure dipping technology and its device |
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| CN1420506A (en) * | 2001-11-20 | 2003-05-28 | 上海电器科学研究所 | Vacuum continuous dipping insulation process |
| CN101086922A (en) * | 2007-04-20 | 2007-12-12 | 上海同立电工材料有限公司 | A vacuum balance method of vacuum pressure dipping technology and its device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876106A (en) * | 2012-09-28 | 2013-01-16 | 中国船舶重工集团公司第七一二研究所 | Filming accelerant solution for motor insulating varnish and filming method for insulating vanish before curing of motor |
| CN103326525A (en) * | 2013-06-27 | 2013-09-25 | 南车株洲电力机车研究所有限公司 | Vacuum pressure paint dipping device and method for motor belt motor base stator windings |
| CN103326525B (en) * | 2013-06-27 | 2016-04-13 | 南车株洲电力机车研究所有限公司 | Motor belt motor support stator winding vacuum pressure paint dipping device and method |
| CN103401335B (en) * | 2013-07-31 | 2015-09-23 | 东方电气（乐山）新能源设备有限公司 | A kind of double-fed wind power generator insulation system and processing method thereof |
| CN103401335A (en) * | 2013-07-31 | 2013-11-20 | 东方电气（乐山）新能源设备有限公司 | Doubly-fed wind-driven generator insulation system and manufacturing method thereof |
| CN103542892B (en) * | 2013-10-28 | 2016-01-20 | 哈尔滨电机厂有限责任公司 | A kind of method of testing of vacuum pressure impregnating resin |
| CN103542892A (en) * | 2013-10-28 | 2014-01-29 | 哈尔滨电机厂有限责任公司 | Evaluation method of vacuum pressure impregnating resin |
| CN104868666A (en) * | 2015-04-30 | 2015-08-26 | 株洲南车机电科技有限公司 | Primary insulation processing method for linear motor for rail traffic vehicle |
| CN104868666B (en) * | 2015-04-30 | 2018-01-09 | 株洲南车机电科技有限公司 | A kind of insulating treatment method for rail traffic vehicles linear electric motor primary |
| CN106881237A (en) * | 2015-12-16 | 2017-06-23 | 株洲时代新材料科技股份有限公司 | Vacuum hydraulic immersion system and dipping method |
| CN106881237B (en) * | 2015-12-16 | 2019-03-08 | 株洲时代新材料科技股份有限公司 | Vacuum hydraulic immersion system and dipping method |
| CN107947505A (en) * | 2017-11-27 | 2018-04-20 | 无锡华盛力通电驱动系统有限公司 | Motor-stator dipped lacquer technique |
| CN111354563A (en) * | 2020-04-14 | 2020-06-30 | 全球能源互联网研究院有限公司 | Iron core for anode saturable reactor, preparation method and anode saturable reactor |
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Application publication date: 20120613 |