CN202183664U - Insulation structure for electromagnetic coils of variable frequency motor - Google Patents
Insulation structure for electromagnetic coils of variable frequency motor Download PDFInfo
- Publication number
- CN202183664U CN202183664U CN2011202858269U CN201120285826U CN202183664U CN 202183664 U CN202183664 U CN 202183664U CN 2011202858269 U CN2011202858269 U CN 2011202858269U CN 201120285826 U CN201120285826 U CN 201120285826U CN 202183664 U CN202183664 U CN 202183664U
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- straight line
- circle
- coil group
- solenoid
- electromagnetic coil
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Abstract
The utility model discloses an insulation structure for electromagnetic coils of a variable frequency motor, which comprises a stator groove and an electromagnetic coil group, wherein the electromagnetic coil group is composed of straight line portions and end line portions. The straight line portions of the electromagnetic coil group are arranged in the stator groove through composite foil and polyester film, thermal expansion felts are arranged in the electromagnetic coil group between two adjacent straight line portions to insulate the two straight line portions, a laminated board is arranged at the position of an opening of the stator groove, and a gasket strip is arranged between the laminated board and the a straight line coil group. By adopting the technical scheme, the electromagnetic coil group is immersed in H-level insulation paint for two times in vacuum state. Lead wires of the electromagnetic coil group adopt silicon rubber insulation cables (JHXG-1000).The insulation structure is suitable for the variable frequency motor with seat number above 450 and rated voltage below 1140V, is good in insulation effect, can sufficiently meet use requirements of variable frequency power sources, and does not have dV/dT peak pulse with large amplitude any more during operation, thereby avoiding turn-to-turn faults during use.
Description
Technical field
The utility model belongs to the electrical machine insulation technical field, relates in particular to a kind of insulation system of variable-frequency motor solenoid.
Background technology
In technique known; The design of 1140V variable-frequency motor only is directed against the mechanical part and the electromagnet portion of motor, and seldom takes measures for the insulation system of solenoid, generally still uses the insulation system of non-frequency motor electromagnetic coil; And because the particularity of variable frequency power supply; Harmonic content is big, in servicely exists the very big dV/dT spike of amplitude, is easy in use occur turn-to-turn fault.
The utility model content
The utility model provides a kind of instructions for use of in variable-frequency motor, satisfying variable frequency power supply in order to solve weak point of the prior art, avoids the use of the insulation system of a kind of variable-frequency motor solenoid that occurs turn-to-turn fault in the process.
For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of insulation system of variable-frequency motor solenoid; Comprise stator slot and solenoid group; The solenoid group partly is made up of straight line portion and end line, and the straight line portion of solenoid group is arranged in the stator slot through composite insulating foil and polyester film, is provided with thermal expansion felt mutually insulated between the solenoid group of adjacent two straight line portioies; The opening part of stator slot is provided with laminated sheet, is provided with filler strip between laminated sheet and the straight line coil groups.
Said solenoid group comprises successively some circle copper strap wire circles of stack from top to bottom; Every circle copper strap wire circle is made up of two copper strap wires; Some circle copper strap wire circles are wound with the mica tape of partly repeatedly double-baging outward, between the first circle and second circle, all be lined with one deck insulating paper between last circle and the circle second from the bottom; The mica tape of the straight line portion of solenoid group is wound with the alkali-free band of flat bag one deck outward; The mica tape of the end line part of solenoid group is wound with the binding strap that partly repeatedly wraps one deck outward.
Before adopting technique scheme, earlier solenoid group vacuum is soaked H class F insulation lacquer twice.The lead wire of solenoid group adopts silicon rubber insulated cable (JHXG-1000).The utility model is applicable to seat No. more than 450, the variable-frequency motor of rated voltage below 1140V; Insulation effect is good; Can fully satisfy the instructions for use of variable frequency power supply, in servicely no longer include the very big dV/dT spike of amplitude, thereby avoid in use occurring turn-to-turn fault.
Description of drawings
Fig. 1 is the sectional view that the insulation of solenoid group is arranged in each stator slot in the middle of the utility model;
Fig. 2 is the sectional view that the straight line portion insulation of solenoid group is arranged;
Fig. 3 is the sectional view that the end line SI semi-insulation of solenoid group is arranged.
Embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3; The insulation system of a kind of variable-frequency motor solenoid of the utility model; Comprise stator slot 1 and solenoid group 10; Solenoid group 10 partly is made up of straight line portion and end line, and the straight line portion of solenoid group 10 is arranged in the stator slot 1 through composite insulating foil 2 and polyester film 3, is provided with thermal expansion felt 4 mutually insulateds between the solenoid group 10 of adjacent two straight line portioies; The opening part of stator slot 1 is provided with laminated sheet 5, is provided with filler strip 6 between laminated sheet 5 and the straight line coil groups.
The model of copper strap wire adopts SBMYFB-40/180; Composite insulating foil 2 is the thick TFT of 0.18mm; Polyester film 3 thickness are 0.05mm; Binding strap 12 is the PST band of 0.2mm (thickness) * 25mm (width); The model that mica tape 8 adopts is 0.14X25 (5451-1), 0.14mm (thickness) * 25mm (width); Insulating paper 9 adopts the thick NOMEX410 of 0.13mm, and width is than the narrow 0.1mm of copper strap wire; Alkali-free band 11 is 0.1mm (thickness) * 25mm (width); Thermal expansion felt 4 thickness are according to actual conditions, and width is as the criterion not become flexible than the narrow width 0.5mm of stator slot 1; Filler strip 6 thick 0.5mm.
Before adopting technique scheme, earlier solenoid group 10 vacuum are soaked H class F insulation lacquer twice.The lead wire of solenoid group 10 adopts silicon rubber insulated cable (JHXG-1000).The utility model is applicable to seat No. more than 450, the variable-frequency motor of rated voltage below 1140V.
Claims (2)
1. the insulation system of a variable-frequency motor solenoid; It is characterized in that: comprise stator slot and solenoid group; The solenoid group partly is made up of straight line portion and end line, and the straight line portion of solenoid group is arranged in the stator slot through composite insulating foil and polyester film, is provided with thermal expansion felt mutually insulated between the solenoid group of adjacent two straight line portioies; The opening part of stator slot is provided with laminated sheet, is provided with filler strip between laminated sheet and the straight line coil groups.
2. the insulation system of a kind of variable-frequency motor solenoid according to claim 1; It is characterized in that: said solenoid group comprises successively some circle copper strap wire circles of stack from top to bottom; Every circle copper strap wire circle is made up of two copper strap wires; Some circle copper strap wire circles are wound with the mica tape of partly repeatedly double-baging outward, between the first circle and second circle, all be lined with one deck insulating paper between last circle and the circle second from the bottom; The mica tape of the straight line portion of solenoid group is wound with the alkali-free band of flat bag one deck outward; The mica tape of the end line part of solenoid group is wound with the binding strap that partly repeatedly wraps one deck outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202858269U CN202183664U (en) | 2011-08-08 | 2011-08-08 | Insulation structure for electromagnetic coils of variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202858269U CN202183664U (en) | 2011-08-08 | 2011-08-08 | Insulation structure for electromagnetic coils of variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202183664U true CN202183664U (en) | 2012-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202858269U Expired - Lifetime CN202183664U (en) | 2011-08-08 | 2011-08-08 | Insulation structure for electromagnetic coils of variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202183664U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938593A (en) * | 2012-12-10 | 2013-02-20 | 南阳防爆集团股份有限公司 | Stator coil insulation structure of 3300V coalmine-dedicated motor |
| CN102946161A (en) * | 2012-12-04 | 2013-02-27 | 南阳防爆集团股份有限公司 | Method for reducing insulation damage of motor winding and flame-proof type variable-frequency motor |
| CN103066734A (en) * | 2012-08-29 | 2013-04-24 | 永济新时速电机电器有限责任公司 | Walking motor used for continuous miner |
| CN109415047A (en) * | 2016-07-08 | 2019-03-01 | Ntn株式会社 | Electrodynamic type linear movement actuator |
-
2011
- 2011-08-08 CN CN2011202858269U patent/CN202183664U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066734A (en) * | 2012-08-29 | 2013-04-24 | 永济新时速电机电器有限责任公司 | Walking motor used for continuous miner |
| CN103066734B (en) * | 2012-08-29 | 2015-10-21 | 永济新时速电机电器有限责任公司 | For the movable motor of continuous miner |
| CN102946161A (en) * | 2012-12-04 | 2013-02-27 | 南阳防爆集团股份有限公司 | Method for reducing insulation damage of motor winding and flame-proof type variable-frequency motor |
| CN102938593A (en) * | 2012-12-10 | 2013-02-20 | 南阳防爆集团股份有限公司 | Stator coil insulation structure of 3300V coalmine-dedicated motor |
| CN109415047A (en) * | 2016-07-08 | 2019-03-01 | Ntn株式会社 | Electrodynamic type linear movement actuator |
| US10886808B2 (en) | 2016-07-08 | 2021-01-05 | Ntn Corporation | Electric linear actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 473008 Nanyang City, Henan Province North Road, No. 22 Patentee after: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP CO., LTD. Address before: 473000 No. 22 Zhongjing North Road, Nanyang, Henan Patentee before: Nanyang Explosion Protection Group Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term |