Summary of the invention
The objective of the invention is provides a kind of permanent-magnetic traction motor dual intensity at above-mentioned weak point, zero-air-gap, the corona-resistant insulation impregnation technology, adopt vacuum paint dipping, the rotary roasting curing process, dipping lacquer adopts vacuum paint dipping technology, can increase the extension lacquer amount on the motor stator core that has winding to greatest extent, can make impregnating varnish (resin) under negative pressure of vacuum, enter the inside of winding electric machine iron core slot, infiltration puts in place, fill up the air-gap in the electrical machine insulation structure, thereby formed no air-gap insulation, had good dual intensity (mechanical strength, electric strength), zero-air-gap, corona resisting characteristics.
Permanent-magnetic traction motor dual intensity, zero-air-gap, corona-resistant insulation impregnation technology take following scheme to realize:
Permanent-magnetic traction motor dual intensity, zero-air-gap, corona-resistant insulation impregnation technology:
1, the motor stator core that has a winding was placed on the drying room preliminary drying 1~2 hour, and the preliminary drying temperature is 100~120 ℃, removed the moisture content in the motor stator core that has winding;
2, will be placed on through the motor stator core that has winding of preliminary drying be cooled under the normal temperature higher 3~5 ℃ than ambient temperature;
The motor stator core that has winding that 3, will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
4, the vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 40~60 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core groove inside;
5, close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
6, open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.5~3 hours then.The stator core rotary speed that has winding when curing is 30~35 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
7, open oven door then, take out rapidly and have stator ferrite core, cooling at normal temperatures when temperature is cooled to than high 3~5 ℃ of ambient temperature, repeats 3~6 of above-mentioned operations again, carries out dipping lacquer and the baked and cured second time:
The motor stator core that has winding that (a) will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
(b) vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core groove, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 40~60 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core groove inside;
(c) close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
(d) open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.5~3 hours then.The stator core rotary speed that has winding when curing is 30~35 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
8, carry out the dipping lacquer second time, cure, solidify end after, from baking oven, take out the normal temperature cooling rapidly.
Described impregnating varnish adopts epoxy resin and unsaturated polyester resin to be the basic solvent-free immersion paint of lacquer.Its curing rate is fast, and volatile quantity is less than 5% in the solidification process.
The permanent-magnetic traction motor dual intensity, zero-air-gap, the corona-resistant insulation impregnation technology, reasonable in design, adopt vacuum paint dipping, the rotary roasting curing process, be characterized in: dipping lacquer adopts vacuum paint dipping technology, can increase the extension lacquer amount on the motor stator core that has winding to greatest extent, can make impregnating varnish (resin) under vacuum pressure, enter the inside of winding electric machine iron core slot, infiltration puts in place, fill up the air-gap in the electrical machine insulation structure, and rotary roasting curing is the viscosity according to impregnating varnish, the angular velocity omega (stator core that has winding is provided with corresponding rotary speed) that iron core and diameter decide motor stator to rotate in drying room, like this, impregnating varnish under hot conditions according to temperature, viscosity inverse time lag curved line relation, at this moment it is very rare that viscosity becomes, continuation is to the winding internal penetration, because having the motor stator core of winding rotates by rational angular speed, like this, the impregnating varnish that impregnating varnish hangs up by vacuum impregnation, outside the depolarization small part solvent evaporates, basically all be solidificated in motor stator winding and the iron core slot, thereby formed no air-gap insulation, had good dual intensity (mechanical strength, electric strength), zero-air-gap, corona resisting characteristics.
Adopt gearless, the slow-speed of revolution, the high torque (HT) rare earth permanent magnet synchro traction machine of permanent-magnetic traction motor dual intensity of the present invention, zero-air-gap, corona-resistant insulation impregnation technology dipping, through detecting, testing:
1, very strong electric strength is arranged: turn-to-turn withstand voltage test 3600V passes through
Passed through in withstand voltage over the ground 2760V/ minute
Can resist high-frequency impulse 1.6Kv passes through.
2, electric machine temperature rise 39.7K (<90K) pass through.
3, very strong mechanical strength is arranged, can resist the electro-magnetic exciting force that high-frequency impulse forms.
4, can under moist (95% humidity has condensation), salt fog, mould condition, work.
Embodiment
Embodiment 1, permanent-magnetic traction motor dual intensity, zero-air-gap, corona-resistant insulation impregnation technology:
1, the motor stator core that has a winding was placed on the drying room preliminary drying 2 hours, and the preliminary drying temperature is 100 ℃, removed the moisture content in the motor stator core that has winding;
2, will be placed on through the motor stator core that has winding of preliminary drying be cooled under the normal temperature higher 3 ℃ than ambient temperature;
The motor stator core that has winding that 3, will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
4, the vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 60 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core inside; Impregnating varnish adopts epoxy resin and unsaturated polyester resin to be the basic solvent-free immersion paint of lacquer.
5, close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
6, open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 3 hours then.The stator core rotary speed that has winding when curing is 35 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
7, open oven door then, take out rapidly and have stator ferrite core, cooling at normal temperatures when temperature is cooled to than high 3 ℃ of ambient temperature, repeats 3~6 of above-mentioned operations again, carries out dipping lacquer and the baked and cured second time:
The motor stator core that has winding that (1) will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
(2) vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 60 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core groove inside;
(3) close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
(4) open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 3 hours then.The stator core rotary speed that has winding when curing is 35 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
8, carry out the dipping lacquer second time, cure, solidify end after, from baking oven, take out the normal temperature cooling rapidly.
Embodiment 2, permanent-magnetic traction motor dual intensity, zero-air-gap, corona-resistant insulation impregnation technology:
1, the motor stator core that has a winding was placed on the drying room preliminary drying 1 hour, and the preliminary drying temperature is 120 ℃, removed the moisture content in the motor stator core that has winding;
2, will be placed on through the motor stator core that has winding of preliminary drying be cooled under the normal temperature higher 5 ℃ than ambient temperature;
The motor stator core that has winding that 3, will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
4, the vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 40 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core inside; Impregnating varnish adopts epoxy resin and unsaturated polyester resin to be the basic solvent-free immersion paint of lacquer.
5, close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
6, open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.5 hours then; The stator core rotary speed that has winding when curing is 30 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
7, open oven door then, take out rapidly and have stator ferrite core, cooling at normal temperatures when temperature is cooled to than high 5 ℃ of ambient temperature, repeats 3~6 of above-mentioned operations again, carries out dipping lacquer and the baked and cured second time:
The motor stator core that has winding that (1) will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
(2) vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 40 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core groove inside;
(3) close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
(4) open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.5 hours then.The stator core rotary speed that has winding when curing is 30 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
8, carry out the dipping lacquer second time, cure, solidify end after, from baking oven, take out the normal temperature cooling rapidly.
Embodiment 3, permanent-magnetic traction motor dual intensity, zero-air-gap, corona-resistant insulation impregnation technology:
1, the motor stator core that has a winding was placed on the drying room preliminary drying 1.5 hours, and the preliminary drying temperature is 110 ℃, removed the moisture content in the motor stator core that has winding;
2, will be placed on through the motor stator core that has winding of preliminary drying be cooled under the normal temperature higher 4 ℃ than ambient temperature;
The motor stator core that has winding that 3, will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
4, the vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 50 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core inside; Impregnating varnish adopts epoxy resin and unsaturated polyester resin to be the basic solvent-free immersion paint of lacquer.
5, close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
6, open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.7 hours then; The stator core rotary speed that has winding when curing is 32 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
7, open oven door then, take out rapidly and have stator ferrite core, cooling at normal temperatures when temperature is cooled to than high 4 ℃ of ambient temperature, repeats 3~6 of above-mentioned operations again, carries out dipping lacquer and the baked and cured second time:
The motor stator core that has winding that (1) will cool off hangs in the vacuum impregnation jar and covers tightly, opens vacuum pump simultaneously, and the vacuum impregnation jar is vacuumized;
(2) vacuum degree in the vacuum impregnation tank is raised to below the 10Pa, open the compound storage tank valve, the impregnating varnish that is configured in the compound storage tank enters impregnating vessel, impregnating varnish is impregnated in motor windings, the electric machine iron core, when the vacuum degree in the vacuum impregnation tank rises to 0.4~1.33Pa, kept 50 minutes, at this moment impregnating varnish fully immerses motor windings, electric machine iron core inside;
(3) close vacuum pump, the row's of opening lacquer pump pressurizes to impregnation tank, and impregnating varnish is drawn back compound storage tank from impregnation tank, closes the compound storage tank valve then;
(4) open the vacuum impregnation jar, the motor stator core that will have winding hangs on the rotary stand of baking oven and is rotated, and rotary stand is pushed baking oven, closes chamber door, and heat up by following curve: 120 ℃ were cured 1 hour, and 180 ℃ were cured 2.7 hours then; The stator core rotary speed that has winding when curing is 32 rev/mins; The temperature in the process of curing in baking oven of survey in per 0.5 hour and the hot insulation resistance of motor, and on log diary, perform record;
8, carry out the dipping lacquer second time, cure, solidify end after, from baking oven, take out the normal temperature cooling rapidly.
Adopt gearless, the slow-speed of revolution, the high torque (HT) rare earth permanent magnet synchro traction machine of permanent-magnetic traction motor dual intensity of the present invention, zero-air-gap, corona-resistant insulation impregnation technology dipping, elevator inspection center of Shanghai Communications University by one of national elevator inspection center confirms that through the special equipment type approval test this product that adopts insulating process of the present invention to handle meets " elevator type approval test rule " and stipulates.