CN205304444U - High thermal insulation structure of high -pressure high efficiency motor more than 3kV level - Google Patents
High thermal insulation structure of high -pressure high efficiency motor more than 3kV level Download PDFInfo
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- CN205304444U CN205304444U CN201520924962.6U CN201520924962U CN205304444U CN 205304444 U CN205304444 U CN 205304444U CN 201520924962 U CN201520924962 U CN 201520924962U CN 205304444 U CN205304444 U CN 205304444U
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Abstract
The utility model relates to a high thermal insulation structure of high -pressure high efficiency motor more than 3kV level, include: stator core, stator coil, slot wedge and motor insulation paper in the high -voltage motor, wherein, stator core adopts the height to lead heat recombination insulating cement flooding insulation system, and motor insulation paper adopts the height to lead heat recombination insulated paper, and the slot wedge adopts high heat conduction magnetism groove mud to fill insulation system, and stator coil's straight -line portion and end line part adopt the winding of high stator coil 0 to take continuous multilayer package around the structure. The utility model discloses the heat recombination insulating cement is led to the height that will have good heat conductivity, high heat conduction magnetism groove mud stopping and high thermal insulation winding area, use in the high -voltage motor has winding stator core structure, the heat conductivility of high -pressure motor insulation structure has effectively been improved, the coefficient of heat conductivity that can make the high -voltage motor improves DEG C m to 0.4W by original 0.16W DEG C m, the electric efficiency is high by 1%~3%, motor temperature rise decline (b) 8 (b) K, the stability of motor work is improved and reliability, prolongs the service life of the electric machine.
Description
Technical field
This utility model belongs to motor device technical field, is a kind of above high-pressure efficient motor high heat conductive insulating structure of 3kV level.
Background technology
At present, domestic high-voltage motor develops to high efficiency direction, in order to make high-voltage motor realize high efficiency, miniaturization and cost degradation, it is accomplished by improving the heat dispersion of motor, but improve the heat dispersion of motor and make the efficiency of motor reach the restriction being to a certain degree subject to many-sided restriction, the particularly insulation system of motor by electromagnetism aspect and raw material aspect. Electric efficiency improves under normal circumstances, motor temperature increases, this is because motor is in running, prevention heat is dispersed to iron core and cooling medium by electric insulation as the Barriers of heat, cause that motor temperature raises, and motor temperature is once raise, under operating for a long time, high running temperature will cause that its insulant is aging, reduce dielectric properties and mechanical performance, cause power of motor to reduce and the life-span reduces, arise that scaling loss ruins machine phenomenon, there is the short problem with potential safety hazard in service life. Therefore, it is desirable to electrical machine insulation has higher thermal conductivity. Current domestic high-voltage motor relies primarily on and improves radiating condition to reduce temperature rise, and do so certainly will increase volume and the manufacturing cost of motor, and single-machine capacity is also affected by considerable restraint. And stator core insulation is most important part in high-voltage motor insulated system, determine the technical-economic index of motor to a great extent, also determine motor reliability of operation and service life. And the insulation system of existing high-voltage motor is not reaching to the requirement of high efficiency motor, accordingly, it is difficult to realize the purpose that high-voltage motor efficiency improves, temperature rise declines. For this, the high heat conductive insulating structure of development high-voltage motor is the key issue that current manufacturing industry is urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide one can improve electric efficiency, can make again the above high-pressure efficient motor high heat conductive insulating structure of 3kV level that motor temperature rise declines.
Realize the purpose of this utility model to be adopted the technical scheme that: this insulation system includes: stator core in high-voltage motor, stator coil, slot wedge and motor insulating paper, wherein, stator core is that high heat conduction has winding stator core, what adopt is high heat conduction compound inslation glue varnished insulation structure, motor insulating paper adopts high heat conduction composite-insulating paper, the composite stamped products that this insulating paper is made up of upper strata insulating paper, thin film and lower floor's insulating paper, wherein, high heat conduction compound inslation glue-line it is coated with between upper strata insulating paper and thin film and between lower floor's insulating paper and thin film; It is characterized in that:
Described slot wedge adopts high heat conduction magnetic slot mud to fill insulation system;
The straight line portion of described stator coil and wire section adopt high heat conductive insulating compound dry mica paper tape continuous multilayer to hold structure, and it holds the half-stack package mode that layer is 7��9 layers;
Described high heat conductive insulating compound dry mica paper tape is that single side, double-side type and the three kinds of high heat conductive insulatings of three-in-one being compositely suppressed to form by high heat conduction mica powder ply of paper, the reinforcing material bed of material, high heat conduction compound inslation glue-line are wound around band.
High heat conduction compound inslation glue used in this utility model and high heat conductive insulating paper are the patents of the applicant's earlier application, and its patent No. is: 201310635339.4 patent names are " low-voltage efficient motor high heat conductive insulating structure and preparation method thereof ".
According to the high-pressure efficient motor high heat conductive insulating structure that such scheme is made, it provides the benefit that:
(1) the high heat conduction stator core of this utility model high-voltage motor, it is wound around band owing to employing high heat conductive insulating in the holding of stator coil, slot wedge is filled with high heat conduction magnetic slot mud and in motor stator core mass-impregnation, employs high heat conduction compound inslation glue, the heat conductivity that can make high-voltage motor is increased to 0.4W/ DEG C of m by 0.16W/ DEG C of original m, improve 1.875 times, effectively improving the heat conductivility of high-voltage motor insulated structure, its insulation can reach the electrical machine insulation requirement of F, H level.
(2) high heat conductive insulating with superior thermal conductivity is wound around band, high heat conduction magnetic slot mud inserts and high heat conduction compound inslation glue, it is applied in high-voltage motor and has in layered winding stator core configuration, the drawback of common insulation system capacity of heat transmission difference can be overcome, and can successfully the heat that motor internal produces be derived, therefore, under equal conditions can being effectively improved high-voltage motor efficiency 1%��3%, motor temperature rise declines substantially, and its motor average temperature rising declines8K. For 6kV voltage, the monolateral thickness of high-voltage motor formed coil is reduced to 1.0mm by original 1.8mm, and every motor can be made to reduce manufacturing cost more than 10,000 yuan.
(3) high heat conductive insulating used in this utility model is wound around band and has significantly high heat conductivity, thermostability, moisture resistance, electric property mechanical strength and saturating machine, by high heat conductive insulating being wound around band around the straight line portion wrapping on coil of stator of motor and wire section, not only insulate but also have good conduction heat transfer performance, achieve the purpose that the loss of electric machine reduces, efficiency improves, caloric value declines, temperature rise reduces, thus can further improve the stability of high-voltage motor work and reliability, extend the service life of motor.
(4) in the high heat conduction VPI stator core insulation structure processed, insulating inner air-gap-free, overall performance is good, be conducive to improving high-voltage motor insulated electric property and electrical life, thus reaching to improve the technical specification of motor, the beneficial effect of service life and reliability, also simplify high-voltage motor insulated manufacturing process simultaneously, improve production efficiency, reduce cost, and be conducive to improving the stability of high-voltage motor insulated quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the cross sectional view of A-A in Fig. 1.
Detailed description of the invention
Referring to Fig. 1, Fig. 2, the above high-pressure efficient motor high heat conductive insulating structure of 3kV level of the present utility model includes: the stator core 1 in high-voltage motor, stator coil 2, slot wedge 3 and motor insulating paper 4, wherein, stator core 1 has winding stator core for high heat conduction, what adopt is high heat conduction compound inslation glue varnished insulation structure, motor insulating paper 4 adopts high heat conduction composite-insulating paper, this insulating paper 4 is by upper strata insulating paper, the composite stamped products of thin film and lower floor's insulating paper composition, wherein, high heat conduction compound inslation glue-line it is coated with between upper strata insulating paper and thin film and between lower floor's insulating paper and thin film, it is used upper, lower floor's insulating paper all adopts high performance NOMEX paper or Du Pont's paper or Qazz paper or poly-maple paper or poly-virtue paper or evil two to frustrate paper. in this utility model, thin film used in insulating paper 4 and mica tape all adopts mylar or imines thin film. slot wedge 3 adopts high heat conduction magnetic slot mud to fill insulation system, and high heat conduction magnetic slot mud is the inserts goods that iron powder or magnetic powder mix composition with high heat conduction compound inslation glue, the proportioning of its raw material is by weight percentage: iron powder or magnetic powder 70%��90%, high heat conduction compound inslation glue 10%��30%, during making, after only the two raw material need to being prepared according to proportional quantity, it is uniformly mixed, can use. straight line portion and wire section at stator coil 2 adopt high heat conductive insulating compound dry mica paper tape continuous multilayer to hold structure, and it holds the half-stack package structure that layer is 7��9 layers. described high heat conductive insulating compound dry mica paper tape is that single side, double-side type and the three kinds of high heat conductive insulatings of three-in-one being compositely suppressed to form by high heat conduction mica powder ply of paper, the reinforcing material bed of material, high heat conduction compound inslation glue-line are wound around band, wherein used high heat conduction Muscovitum art printing paper is Muscovitum phosphorus sheet and the mixed product of two kinds of raw materials of aluminium nitride, and the proportioning of two kinds of raw materials is by weight: mica flake 70��75 parts, aluminium nitride 20��30 parts, the manufacture method of this high heat conduction Muscovitum art printing paper is: first carry out the preparation of combined mica powder, the Muscovitum phosphorus sheet that will be singled out is put into calcining furnace and is calcined under the high temperature of 1000 DEG C��1300 DEG C, in the process of calcining, aluminium nitride is added by the proportioning of described mica flake 70��75 parts, aluminium nitride 20��30 parts, calcination time is 1��5h, the height that the length of its calcination time is according to calcining heat is determined, and makes calcining combined mica powder standby, then inserting on Muscovitum paper machine by the combined mica powder after calcining, crossing net roller-compaction is by the high heat conduction combined mica art printing paper of designing requirement thickness, standby after rolling.
The high heat conductive insulating winding band of the present invention includes single side insulation winding band, double-side type insulation winding band and three-in-one and insulate and be wound around three kinds of band, and the manufacture method of various winding band is as follows:
A) single side insulation is wound around band: with high heat conduction combined mica art printing paper for base material, single-side reinforced material is made with alkali-free glass fibre, on compounding machine, lower floor is high heat conduction combined mica art printing paper, upper strata is alkali-free glass fibre, high heat conduction compound inslation glue it is coated with between two-layer, its coated weight is that single side is wound around with the 5%��11% of gross mass, after compound suppressing, insert in drying oven, it dries temperature is 115 DEG C��130 DEG C, drying time 1��3h, dry to semi-cured state, sampling detection meets the standard that gelling solidifies, make single side high heat conductive insulating and be wound around band coiled material, after rolling standby,
B) double-side type insulation is wound around band: with high heat conduction combined mica art printing paper for base material, two-sided supporting material is made with alkali-free glass fibre and alkali-free glass fiber cloth, on compounding machine, lower floor is alkali-free glass fiber cloth, middle level is high heat conduction combined mica art printing paper, upper strata is alkali-free glass fibre, each interlayer is coated with high heat conduction compound inslation glue, its coated weight is that double-side type is wound around with the 5%��11% of gross mass, after compound suppressing, insert in drying oven, it dries temperature is 115 DEG C��130 DEG C, drying time 1��3h, dry to semi-cured state, sampling detection meets the standard that gelling solidifies, make double-side type high heat conductive insulating and be wound around band coiled material, after rolling standby,
C) three-in-one insulation is wound around band: with high heat conduction combined mica art printing paper for base material, two-sided supporting material is made with alkali-free glass fibre and thin film, on compounding machine, lower floor is thin film, middle level is high heat conduction combined mica art printing paper, upper strata is alkali-free glass fibre, each interlayer is coated with high heat conduction compound inslation glue, its coated weight is that three-in-one is wound around with the 5%��11% of gross mass, after compound suppressing, insert in drying oven, it dries temperature is 115 DEG C��130 DEG C, drying time 1��3h, dry to semi-cured state, sampling detection meets the standard that gelling solidifies, make three-in-one high heat conductive insulating and be wound around band coiled material, after rolling standby,
D) band is cut into: respectively by a), b), after the winding band coiled material uncoiling of c) three types, cut into the winding bandwidth of needs according to a conventional method on cutting machine respectively, be high heat conductive insulating winding of band-type material.
The single side prepared according to the inventive method, double-side type, three-in-one three types high heat conductive insulating be wound around band, its use is the requirement holding thickness according to the electric property of high-voltage motor, dielectric strength and major insulation, selects the high heat conductive insulating using adaptive form to be wound around band.
High heat conduction compound inslation glue used in this utility model and high heat conductive insulating paper are the patents of the applicant's earlier application, its patent No. is: 201310635339.4 patent names are " low-voltage efficient motor high heat conductive insulating structure and preparation method thereof ", and composition of its raw material and preparation method thereof repeats no more.
High heat conduction has the dipping of winding stator core to adopt the whole soaking technology of winding entirety VPI, first according to designing requirement, the single side insulation that the high heat conductive insulating that this utility model makes is wound around in band is selected to be wound around band, double-side type insulation is wound around band and three-in-one insulate and is wound around the one of which of band, first the straight line position of stator coil 2 and end line position are held continuously multilayer high-thermal conductivity insulation and is wound around band, after reaching the number of plies and the size of design code, it is directly embedded in stator slot and colligation is fixed, high heat conduction magnetic slot mud inserts is filled again in the slot wedge 3 of motor, then by high heat conduction stator coil, high heat conductive insulating slot wedge and height are led compound thermal insulating paper 4 and are assembled in stator core 1, and stator core 1 entirety after assembling is put in the impregnating autoclave equipped with high heat conduction compound inslation glue and carried out impregnation process, last at baker internal heating curing, the high heat conduction making high-voltage motor has winding stator core. after winding stator core entirety VPI, both it was filled with the gap of insulation interlayer and stator coil and iron core slot by high heat conduction compound inslation glue, had been also filled with end banding fixed structure so that it is become one firmly overall. mass-impregnation processes and improves Winding of HV motor radiating effect, decreases the damage of stator coil rule, improves the validity and reliability of winding.
Claims (1)
1. the above high-pressure efficient motor high heat conductive insulating structure of 3kV level, including: stator core in high-voltage motor, stator coil, slot wedge and motor insulating paper, wherein, stator core is that high heat conduction has winding stator core, what adopt is high heat conduction compound inslation glue varnished insulation structure, motor insulating paper adopts high heat conduction composite-insulating paper, the composite stamped products that this insulating paper is made up of upper strata insulating paper, thin film and lower floor's insulating paper, wherein, high heat conduction compound inslation glue-line it is coated with between upper strata insulating paper and thin film and between lower floor's insulating paper and thin film; It is characterized in that:
Described slot wedge adopts high heat conduction magnetic slot mud to fill insulation system;
The straight line portion of described stator coil and wire section adopt high heat conductive insulating compound dry mica paper tape continuous multilayer to hold structure, and it holds the half-stack package mode that layer is 7��9 layers;
Described high heat conductive insulating compound dry mica paper tape is that single side, double-side type and the three kinds of high heat conductive insulatings of three-in-one being compositely suppressed to form by high heat conduction mica powder ply of paper, the reinforcing material bed of material, high heat conduction compound inslation glue-line are wound around band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924962.6U CN205304444U (en) | 2015-11-19 | 2015-11-19 | High thermal insulation structure of high -pressure high efficiency motor more than 3kV level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520924962.6U CN205304444U (en) | 2015-11-19 | 2015-11-19 | High thermal insulation structure of high -pressure high efficiency motor more than 3kV level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304444U true CN205304444U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520924962.6U Expired - Fee Related CN205304444U (en) | 2015-11-19 | 2015-11-19 | High thermal insulation structure of high -pressure high efficiency motor more than 3kV level |
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| Country | Link |
|---|---|
| CN (1) | CN205304444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960705A (en) * | 2017-04-19 | 2017-07-18 | 苏州巨峰电气绝缘系统股份有限公司 | It is a kind of suitable for low resin mica tape of high-voltage motor and preparation method thereof |
-
2015
- 2015-11-19 CN CN201520924962.6U patent/CN205304444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960705A (en) * | 2017-04-19 | 2017-07-18 | 苏州巨峰电气绝缘系统股份有限公司 | It is a kind of suitable for low resin mica tape of high-voltage motor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20181119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |