CN210535488U - Transformer for driving motor of 126KV high-voltage circuit breaker - Google Patents
Transformer for driving motor of 126KV high-voltage circuit breaker Download PDFInfo
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- CN210535488U CN210535488U CN201921849528.0U CN201921849528U CN210535488U CN 210535488 U CN210535488 U CN 210535488U CN 201921849528 U CN201921849528 U CN 201921849528U CN 210535488 U CN210535488 U CN 210535488U
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Abstract
The utility model relates to a 126KV high-voltage circuit breaker motor driving transformer, belonging to the technical field of transformers, comprising an upper clamping piece, a lower clamping piece, an iron core positioned between the upper clamping piece and the lower clamping piece, and a solenoid wound outside the iron core; the method is characterized in that: a coil insulation frame is arranged on the outer side of the iron core; a first high-pressure-resistant full-pouring resin layer is arranged between the iron core and the coil insulation frame; a bottom layer insulating resin film is arranged on the outer side of the coil insulating frame, and a primary coil is wound on the outer side of the bottom layer insulating resin film; an inter-group insulating resin film is arranged on the outer side of the primary coil, and a secondary coil is wound on the outer side of the inter-group insulating resin film; outer layer insulating cable paper is arranged outside the secondary coil; a second high-pressure-resistant fully-cast resin layer is arranged on the outer side of the outer layer insulating cable paper; and a plurality of wiring terminals for connecting the primary coil and the secondary coil are embedded in the side wall of the solenoid. The utility model discloses can improve the insulating properties of transformer well.
Description
Technical Field
The utility model belongs to the technical field of the transformer, concretely relates to 126KV high voltage circuit breaker is transformer for motor drive.
Background
The 126KV high-voltage circuit breaker (or called 126KV high-voltage switch) not only can cut off or close the no-load current and the load current in a high-voltage circuit, but also can cut off the overload current and the short-circuit current through the action of a relay protection device when a system breaks down, has a quite perfect arc extinguishing structure and enough current breaking capacity, and can be divided into an oil circuit breaker (a multi-oil circuit breaker and a low-oil circuit breaker), a sulfur hexafluoride circuit breaker (an SF6 circuit breaker), a compressed air circuit breaker, a vacuum circuit breaker and the like.
When the 126KV high-voltage circuit breaker is used, a driving transformer needs to be equipped, a wire package of a traditional transformer comprises a plurality of heat dissipation through holes, and the heat dissipation through holes and wiring holes enable the inside of the wire package to be communicated with the outside air, so that the insulation performance of the transformer is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem who exists among the well-known technique, provide a transformer for 126KV high voltage circuit breaker motor drive, this transformer for 126KV high voltage circuit breaker motor drive can satisfy the insulation requirement of 126KV high voltage circuit breaker drive process through the combination of multiple insulation mode.
The utility model aims at providing a 126KV high voltage circuit breaker transformer for motor drive, which comprises an upper clamping piece (1), a lower clamping piece (2), an iron core (5) positioned between the upper clamping piece (1) and the lower clamping piece (2), and a solenoid (3) wound outside the iron core (5); a coil insulation frame (8) is arranged on the outer side of the iron core (5); a first high-pressure-resistant full-pouring resin layer is arranged between the iron core (5) and the coil insulation frame (8); a bottom layer insulating resin film (10) is arranged on the outer side of the coil insulating frame (8), and a primary coil (6) is wound on the outer side of the bottom layer insulating resin film (10); an inter-group insulating resin film (11) is arranged on the outer side of the primary coil (6), and a secondary coil (7) is wound on the outer side of the inter-group insulating resin film (11); outer layer insulating cable paper (12) is arranged on the outer side of the secondary coil (7); a second high-pressure-resistant fully-cast resin layer is arranged on the outer side of the outer layer insulating cable paper (12); and a plurality of wiring terminals (4) for connecting the primary coil (6) and the secondary coil (7) are embedded in the side wall of the coil (3).
Further: the wiring terminal (4) comprises a boss integrally formed with the second high-pressure-resistant fully-poured resin layer, the boss is of a circular truncated cone structure, a through hole is formed in the central shaft of the circular truncated cone, a wiring terminal and a connecting bolt are arranged in the through hole, a wire hole is formed in the second high-pressure-resistant fully-poured resin layer, and a connector lug of the primary coil (6) and the secondary coil (7) penetrates through the wire hole and then is connected with the wiring terminal.
Further: the coil (3) is of a rectangular structure, and the plurality of wiring terminals (4) are located on the same side face of the coil (3).
Further: the outer layer of insulating cable paper (12) is 5-10 layers.
Further: an interlayer insulating resin film is arranged between two adjacent layers of the primary coil (6).
Further: an interlayer insulating resin film is arranged between two adjacent layers of the secondary coil (7).
Further: the inter-group insulating resin film (11) and the second high-pressure-resistant fully-cast resin layer are multilayer.
Further: the shortest distance between the coil (3) and the upper surface and the lower surface of the coil insulation frame (8) is not less than 8 mm.
The utility model has the advantages and positive effects that:
the above technical scheme is adopted in the utility model, the utility model provides an outside only binding post and the iron core hole of solenoid outer wall, other places are insulation structure, simultaneously, between the coil insulation frame outside, primary and secondary, the secondary outside, all set up insulation structure between the layer of primary and secondary, finally improve insulation level on the whole.
Drawings
FIG. 1 is a front view of a preferred embodiment of the present invention;
fig. 2 is a right side view of the preferred embodiment of the present invention;
FIG. 3 is a top view of a preferred embodiment of the present invention;
fig. 4 is an axial cross-sectional view of a coil in a preferred embodiment of the invention.
Wherein: 1. an upper clamp; 2. a lower clamp; 3. a coil; 4. a wiring terminal; 5. an iron core; 6. a primary coil; 7. a secondary coil; 8. a coil insulation frame; 9. high-pressure-resistant fully-cast resin layer; 10. a bottom layer insulating resin film; 11. an inter-group insulating resin film; 12. and the outer layer is insulating cable paper.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:
referring to fig. 1 to 4, a transformer for driving a motor of a 126KV high voltage circuit breaker includes an upper clamp 1, a lower clamp 2, an iron core 5 located between the upper clamp 1 and the lower clamp 2, and a coil 3 wound around the iron core 5; a coil insulation frame 8 is arranged on the outer side of the iron core 5; a first high-pressure-resistant fully-poured resin layer is arranged between the iron core 5 and the coil insulation frame 8; a bottom layer insulating resin film 10 is arranged on the outer side of the coil insulating frame 8, and a primary coil 6 is wound on the outer side of the bottom layer insulating resin film 10; an inter-group insulating resin film 11 is arranged on the outer side of the primary coil 6, and a secondary coil 7 is wound on the outer side of the inter-group insulating resin film 11; an outer layer insulating cable paper 12 is arranged on the outer side of the secondary coil 7; a second high-pressure-resistant fully-cast resin layer is arranged on the outer side of the outer-layer insulating cable paper 12; a plurality of connection terminals 4 for connecting the primary coil 6 and the secondary coil 7 are embedded in the side wall of the coil package 3. The positions of the first high-pressure-resistant fully-cast resin layer and the first high-pressure-resistant fully-cast resin layer are shown as a high-pressure-resistant fully-cast resin layer 9 in fig. 4;
preferably, the method comprises the following steps: the wiring terminal 4 comprises a boss integrally formed with the second high-pressure-resistant fully-poured resin layer, the boss is of a circular truncated cone structure, a through hole is formed in the central shaft of the circular truncated cone, a wiring terminal and a connecting bolt are arranged in the through hole, a wire hole is formed in the second high-pressure-resistant fully-poured resin layer, and the connector lug of the primary coil 6 and the connector lug of the secondary coil 7 penetrate through the wire hole and then are connected with the wiring terminal.
The coil 3 is of a rectangular structure, and the plurality of wiring terminals 4 are located on the same side face of the coil 3.
The outer layer of insulating cable paper 12 is 5-10 layers. In the preferred embodiment, the outer layer of insulating cable paper 12 is 8 layers.
In order to further improve the insulation performance:
an interlayer insulating resin film is provided between two adjacent layers of the primary coil 6.
An interlayer insulating resin film is provided between two adjacent layers of the secondary coil 7.
The inter-group insulating resin film 11 and the second high-pressure-resistant fully-cast resin layer are multilayer.
In order to further improve the safety performance of insulation and reduce the potential safety hazard caused by cracking of an insulation layer, the shortest distance between the coil 3 and the upper surface and the lower surface of the coil insulation frame 8 is not less than 8 mm; that is, the shortest distance between the upper edge of the coil 3 and the upper surface of the coil insulating frame 8 is not less than 8mm, and the shortest distance between the lower edge of the coil 3 and the lower surface of the coil insulating frame 8 is not less than 8mm, and preferably, in the above preferred embodiment, the shortest distance between the coil 3 and the upper and lower surfaces of the coil insulating frame 8 is 8 mm.
The principle of the preferred embodiment is as follows:
in the preferred embodiment, heat dissipation holes or heat dissipation channels are omitted, solid sealing structures are arranged outwards from the iron core, and in order to improve the insulating property, insulating structures are arranged outside the coil insulating frame, between the primary coil and the secondary coil, outside the secondary coil and between the primary coil and the secondary coil; and on the outer wall of the coil, only the wiring terminal and the iron core hole are arranged, and other places are all insulating sealing structures, so that the insulating grade of the transformer is finally improved on the whole through the multilayer insulation.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.
Claims (8)
1. A transformer for driving a 126KV high-voltage circuit breaker motor comprises an upper clamping piece (1), a lower clamping piece (2), an iron core (5) positioned between the upper clamping piece (1) and the lower clamping piece (2), and a wire package (3) wound outside the iron core (5); the method is characterized in that: a coil insulation frame (8) is arranged on the outer side of the iron core (5); a first high-pressure-resistant full-pouring resin layer is arranged between the iron core (5) and the coil insulation frame (8); a bottom layer insulating resin film (10) is arranged on the outer side of the coil insulating frame (8), and a primary coil (6) is wound on the outer side of the bottom layer insulating resin film (10); an inter-group insulating resin film (11) is arranged on the outer side of the primary coil (6), and a secondary coil (7) is wound on the outer side of the inter-group insulating resin film (11); outer layer insulating cable paper (12) is arranged on the outer side of the secondary coil (7); a second high-pressure-resistant fully-cast resin layer is arranged on the outer side of the outer layer insulating cable paper (12); and a plurality of wiring terminals (4) for connecting the primary coil (6) and the secondary coil (7) are embedded in the side wall of the coil (3).
2. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 1, wherein: the wiring terminal (4) comprises a boss integrally formed with the second high-pressure-resistant fully-poured resin layer, the boss is of a circular truncated cone structure, a through hole is formed in the central shaft of the circular truncated cone, a wiring terminal and a connecting bolt are arranged in the through hole, a wire hole is formed in the second high-pressure-resistant fully-poured resin layer, and a connector lug of the primary coil (6) and the secondary coil (7) penetrates through the wire hole and then is connected with the wiring terminal.
3. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 1, wherein: the coil (3) is of a rectangular structure, and the plurality of wiring terminals (4) are located on the same side face of the coil (3).
4. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 1, wherein: the outer layer of insulating cable paper (12) is 5-10 layers.
5. The 126KV high voltage circuit breaker motor driving transformer of any of claims 1-4, wherein: an interlayer insulating resin film is arranged between two adjacent layers of the primary coil (6).
6. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 5, wherein: an interlayer insulating resin film is arranged between two adjacent layers of the secondary coil (7).
7. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 6, wherein: the inter-group insulating resin film (11) and the second high-pressure-resistant fully-cast resin layer are multilayer.
8. The transformer for driving a motor of a 126KV high voltage circuit breaker according to claim 7, wherein: the shortest distance between the coil (3) and the upper surface and the lower surface of the coil insulation frame (8) is not less than 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849528.0U CN210535488U (en) | 2019-10-30 | 2019-10-30 | Transformer for driving motor of 126KV high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921849528.0U CN210535488U (en) | 2019-10-30 | 2019-10-30 | Transformer for driving motor of 126KV high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210535488U true CN210535488U (en) | 2020-05-15 |
Family
ID=70608245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921849528.0U Active CN210535488U (en) | 2019-10-30 | 2019-10-30 | Transformer for driving motor of 126KV high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210535488U (en) |
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2019
- 2019-10-30 CN CN201921849528.0U patent/CN210535488U/en active Active
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