CN204231054U - 200 grades of low voltage motors fall apart embedding winding insulation structure - Google Patents
200 grades of low voltage motors fall apart embedding winding insulation structure Download PDFInfo
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- CN204231054U CN204231054U CN201420715094.6U CN201420715094U CN204231054U CN 204231054 U CN204231054 U CN 204231054U CN 201420715094 U CN201420715094 U CN 201420715094U CN 204231054 U CN204231054 U CN 204231054U
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Abstract
The utility model relates to a kind of 200 grades of low voltage motors and to fall apart embedding winding insulation structure, its main feature is: by the stator winding insulation in low voltage motor, slot for winding portion, alternate, layer insulation and winding slot wedge position adopt insulation system of the present utility model, stator winding entirety adopts the leaching of H9161 unsaturated polyester-imide insulating varnish to dry insulation system, and by the insulating method in motor stator winding structure is dried in the leaching of H9161 unsaturated polyester-imide insulating varnish, the low voltage motor embedding winding that falls apart is made to reach and not only insulate but also have good conduction heat transfer performance, identify through thermal ageing test, achieve low voltage motor fall apart embedding winding thermal endurance class temperature index higher than 200 desired value, meet stability and the reliability of low voltage motor normal use under 200 DEG C of hot environments for a long time, extend the useful life of low voltage motor.
Description
Technical field
The utility model belongs to technical field of motors, and specifically a kind of thermal endurance class is that the low voltage motor of 200 grades falls apart embedding winding insulation structure.
Background technology
Low-voltage high-power motor stator winding is in operation, and because being subject to the impact of mechanical oscillation, electromagnetic force, temperature, environmental factor for a long time, the faults such as the broken pressure of turn-to-turn occurring often, so the quality that motor winding manufactures, is directly connected to operation and the useful life of motor.Motor winding configuration is divided into shaping winding and loose embedding winding, and in industry, thermal endurance class is that 200 class F insulation structures are generally shaping winding, there is no loose embedding winding insulation structure at present and can reach the level that thermal endurance class is 200 grades.Loose embedding winding is generally the winding configuration that below 1140V motor adopts, and the rated voltage of mine motor generally selects 3300v to power, because some underground coal mine motor and underground fans etc. are by the restriction of locus, for ensureing the mine motor of rated voltage 3300v and the performance of underground fan, loose embedding winding construction must be adopted, and existing loose embedding winding coil, normally used is polyimide enameled wire, its thermal stability is poor, and thermal endurance class does not reach 200 grades of country and industry standard regulation.Because motor operates for a long time in the high-temperature severe environment of about 200 DEG C, in thermal ageing test, use the insulation system of polyimide enameled wire substantially all to damage when the period 6, temperature index can only reach 192, the insulating barrier opening and inspecting rear discovery electromagnetic wire all aging fall, failure of insulation.Therefore, low voltage motor of the prior art falls apart embedding winding, and its thermal endurance class is difficult to reach 200 grades of levels, and useful life is short, and functional reliability is poor.
Utility model content
The purpose of this utility model is to provide a kind of thermal endurance class that can improve low voltage motor, loose embedding winding useful life can be improved again, motor can also be met normally use under 200 DEG C of hot environments for a long time, the embedding winding insulation structure and the strong 200 grades of low voltage motors of functional reliability fall apart.
Realizing the technical scheme that the purpose of this utility model takes is: this insulation system comprises: the stator winding insulation in low voltage motor, insulate in slot for winding portion, winding phase insulation, winding layer insulation and the insulation of winding slot wedge, wherein, the electromagnetic wire of stator winding coil adopts the wrapped copper round wire of double-deck polyimides-fluorine 46 laminated film of MYFE-4 proof voltage 4KV, the groove portion place mat of stator winding has the polyimide film aromatic polyamide paper C level composite material insulating barrier consistent with flute profile and the insulating barrier of 6050 polyimide films, stator winding alternate, interlayer respectively liner has one deck or two layers of polyimide film aromatic polyamide paper C level composite material insulating barrier, the slot wedge of stator winding is polyimide resin based composite material laminated board insulation system.
Described stator winding is that insulation system is dried in the leaching of H9161 unsaturated polyester-imide insulating varnish.
The 200 grades of low voltage motors made according to such scheme fall apart embedding winding insulation structure, and its beneficial effect is:
(1) fall apart in the making of embedding winding at low voltage motor, material described in the utility model and insulation system is adopted by the groove portion to the coil of winding and winding, alternate, interlayer and winding slot wedge, after insulating method process of the present utility model, its low voltage motor made falls apart embedding winding by the thermal ageing test qualification of Shanghai electric equipment inspection institute, and the temperature index of thermal endurance class is higher than 200.
(2) electromagnetic wire of winding coil uses MYFE-4 double-deck polyimides-fluorine 46 laminated film sintering copper round wire insulation system, and can accomplish that 12 cycles, still none punctured, and was identified by thermal ageing test smoothly, the temperature index of thermal endurance class is higher than 200.
(3) by the leaching of H9161 unsaturated polyester-imide insulating varnish is dried in motor stator winding structure, not only insulate but also have good conduction heat transfer performance, achieve the object that the loss of electric machine reduces, efficiency improves, caloric value declines, temperature rise reduces, meet stability and the reliability of low voltage motor normal use under 200 DEG C of hot environments for a long time thus, extend the useful life of low voltage motor.
(4) domesticly at present there is no the reliable 200 grades of loose embedding winding insulation structures identified by heat ageing, this utility model has filled up domestic blank, and all uses home made materials, farthest reduces cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model stator winding groove portion section;
Fig. 2 is the structural representation of the utility model stator winding end.
Embodiment
Referring to Fig. 1, Fig. 2, 200 grades of low voltage motors of the present utility model embedding winding insulation structure that falls apart comprises: the stator winding 1 in low voltage motor insulate, insulate in slot for winding portion 7, alternate 2 insulation of winding, between winding layers, 5 insulation and winding slot wedge 4 insulate, wherein, the electromagnetic wire 3 of stator winding coil adopts the wrapped copper round wire of double-deck polyimides-fluorine 46 laminated film of MYFE-4 proof voltage 4KV, groove portion 7 place mat of stator winding has the polyimide film aromatic polyamide paper C level composite material insulating barrier consistent with flute profile and the insulating barrier 6 of 6050 polyimide films, alternate 2 of stator winding 1, interlayer 5 respectively liner has one deck or two layers of polyimide film aromatic polyamide paper C level composite material insulating barrier, the slot wedge 4 of stator winding 1 is polyimide resin based composite material laminated board insulation system.Described stator winding 1 is that insulation system is dried in the leaching of H9161 unsaturated polyester-imide insulating varnish.
200 grades of low voltage motors of the present utility model embedding winding insulation method of faling apart is carried out according to the following steps:
(1) coiling of stator winding coil: the electromagnetic wire of coil adopts the wrapped copper round wire of double-deck polyimide-fluorine 46 laminated film of MYFE-4 proof voltage 4KV, and turns to stator winding coil according to GB/T 17948.1-2000 standard-required;
(2) branch's insulation processing: first insulation processing is carried out to the groove portion of stator winding, first place mat one deck polyimide film aromatic polyamide paper C level composite material in groove, repave pad one deck 6050 polyimide film, and enter groove portion by under the stator winding coil of step (1) coiling, then respectively at the interlayer of winding, alternate liner one deck or the two layers of polyimide film aromatic polyamide paper C level composite material of winding overhang insulate, the slot wedge of winding adopts the insulation of polyimide resin based composite material laminated board, after the insulation of each for stator winding portion, treat follow-up integral insulation process,
(3) integral insulation process: the stator winding after step (2) insulation processing is carried out entirety leaching and dry process, it is 2 times that number of times is dried in leaching, and leaching is dried technique and is:
First time soaks baking: the stator winding entirety after branch's insulation processing to be placed in impregnation tank → to vacuumize oven dry → bake out temperature in the stator winding feeding drying oven that floods after drip-dry is 150 ± 5 DEG C by the empty 30min of 1000Pa → fidelity → input in impregnation tank H9161 unsaturated polyester-imide insulating varnish → pressurization 0.4Mpa ~ 0.5Mpa → pressurize 30min → broken pressure → back paint → the hang out stator winding after dipping → drip-dry 20 ~ 60min → again, temperature retention time is that 2 ~ 3h → coming out of the stove is cooled to 30 ~ 60 DEG C;
Second time soaks baking: first time leaching to be dried cooled stator winding to insert in impregnation tank → vacuumize the empty 20min of 1000Pa → fidelity → input in impregnation tank H9161 unsaturated polyester-imide insulating varnish → pressurization 0.4Mpa ~ 0.5Mpa → pressurize 30min → broken pressure → back paint → hang out oven dry → bake out temperature in the stator winding → drip-dry 20 ~ 60min → feeding drying oven after flooding for 2 times for 2 times be 150 ± 5 DEG C → temperature retention time be 5 ~ 8h → come out of the stove after, namely make low voltage motor that thermal endurance class can reach 200 grades and to fall apart embedding winding.
In the utility model, insulating material used all uses home made materials, farthest reduce cost, wherein in the coiling of coil, the electromagnetic wire of coil adopts the wrapped copper round wire of double-deck polyimides-fluorine 46 laminated film of MYFE-4 proof voltage 4KV, greatly can improve the thermal endurance class of electromagnetic wire.This kind of electromagnetic wire is lapped wire, and insulating barrier internal layer is two-sided laminated film (FHF), and outermost adopts one side laminated film (HF) or FHF film, and wrapped closely even, through high temperature sintering, lapping layer being bondd becomes overall.This electromagnetic wire can directly commercially be purchased.
Polyimide film aromatic polyamide paper C level composite material and 6050 polyimide films are adopted to insulate as the groove portion of stator winding, slot for winding portion is reached requirement that thermal endurance class is 200 grades, adopt polyimide film aromatic polyamide paper C level composite material to be used for stator winding phase insulation and winding layer insulation simultaneously, meet the requirement that thermal endurance class is 200 grades.Fire resistant polyimide film aromatic polyamide paper used is the C level composite material of soft type, is to glue insulating material with aromatic polyamide paper by polyimide film two sides, has excellent thermal endurance and good dielectric property and mechanical performance.This C level composite material and 6050 polyimide films all can directly commercially be purchased.
Adopt polyimide resin based composite wood laminated sheet as winding slot wedge, the requirement that thermal endurance class is 200 grades can be met.Polyimide resin based composite material laminated board is matrix with polyimide resin, and be that reinforcing material compacting forms with high-performance fiber, have excellent mechanical property, decay resistance and electrical property, its insulation property reach more than 200 grades.The laminate sheet material making slot wedge can directly commercially be purchased.
Adopt H9161 unsaturated polyester-imide insulating varnish, vacuum pressure leaching is carried out to stator winding and dries, the requirement that thermal endurance class is 200 grades can be met.H9161 unsaturated polyester-imide insulating varnish is produced by Harbin Qing Yuan electrical material limited company, this insulating varnish can commercially be purchased or directly order to producer, its main component is modified, high temperature resistant unsaturated polyester-imide resin, activated monomer is styrene, has the features such as good electric property, heat resistance, chemical resistance and processing performance are good.
Claims (2)
1. 200 grades of low voltage motors fall apart embedding winding insulation structure, it is characterized in that: this insulation system comprises: the stator winding insulation in low voltage motor, insulate in slot for winding portion, winding phase insulation, winding layer insulation and the insulation of winding slot wedge, wherein, the electromagnetic wire of stator winding coil adopts the wrapped copper round wire of double-deck polyimides-fluorine 46 laminated film of MYFE-4 proof voltage 4kV, the groove portion place mat of stator winding has the polyimide film aromatic polyamide paper C level composite material insulating barrier consistent with flute profile and the insulating barrier of 6050 polyimide films, stator winding alternate, interlayer respectively liner has one deck or two layers of polyimide film aromatic polyamide paper C level composite material insulating barrier, the slot wedge of stator winding is polyimide resin based composite material laminated board insulation system.
2. 200 grades of low voltage motors according to claim 1 fall apart embedding winding insulation structure, it is characterized in that: described stator winding is that insulation system is dried in the leaching of H9161 unsaturated polyester-imide insulating varnish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420715094.6U CN204231054U (en) | 2014-11-25 | 2014-11-25 | 200 grades of low voltage motors fall apart embedding winding insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420715094.6U CN204231054U (en) | 2014-11-25 | 2014-11-25 | 200 grades of low voltage motors fall apart embedding winding insulation structure |
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| Publication Number | Publication Date |
|---|---|
| CN204231054U true CN204231054U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420715094.6U Expired - Fee Related CN204231054U (en) | 2014-11-25 | 2014-11-25 | 200 grades of low voltage motors fall apart embedding winding insulation structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362786B (en) * | 2014-11-25 | 2017-07-04 | 南阳防爆集团股份有限公司 | 200 grades of low voltage motors dissipate embedding winding insulation structure and its insulating method |
-
2014
- 2014-11-25 CN CN201420715094.6U patent/CN204231054U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362786B (en) * | 2014-11-25 | 2017-07-04 | 南阳防爆集团股份有限公司 | 200 grades of low voltage motors dissipate embedding winding insulation structure and its insulating method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 473008 Nanyang City, Henan Province North Road, No. 22 Patentee after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. Address before: 473008 Nanyang City, Henan Province North Road, No. 22 Patentee before: Nanyang Explosion Protection Group Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20181125 |