CN201946416U - Electrical shielding structure of joint of leading wire of body of high-capacity and high-current transformer - Google Patents
Electrical shielding structure of joint of leading wire of body of high-capacity and high-current transformer Download PDFInfo
- Publication number
- CN201946416U CN201946416U CN2010206625206U CN201020662520U CN201946416U CN 201946416 U CN201946416 U CN 201946416U CN 2010206625206 U CN2010206625206 U CN 2010206625206U CN 201020662520 U CN201020662520 U CN 201020662520U CN 201946416 U CN201946416 U CN 201946416U
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- joint
- current transformer
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- Expired - Lifetime
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- 239000005030 aluminium foil Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 150000001398 aluminium Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The utility model relates to an electrical shielding structure of a joint of a leading wire of a body of a high-capacity and high-current transformer, which comprises two groups of conducting wires connected through a cold-press joint and a shielding layer, wherein a filled layer is wrapped on the cold-press joint of the two groups of the conducting wires, and the shielding layer is wrapped on the filled layer. By adopting the electrical shielding structure, the shielding effect of the shielding layer is improved, and the reliability of the transformer is improved; furthermore, the structure is simple and practical, and the performances are stable and reliable.
Description
Technical field
The present invention relates to a kind of transformer technology field, especially a kind of joint electric shield structure of transformer body lead-in wire.
Background technology
Existing big capacity, strong current transformer device body lead-in wire adopt cold weld technology to be connected with the sleeve pipe connecting line usually, put on the suitable joint of colding pressing at joint for lenticular wire up and down, carry out cold extrusion with the cold weld hydraulic tool then.There is the edge owing to cold pressing on the joint,, under the effect of big capacity, big electric current, partial discharge phenomenon can occurs if do not carry out shielding measure.Therefore, for reducing its partial discharge, wrap screens such as aluminium foil on the surface of the joint of colding pressing usually.Have the angle at edge on the joint owing to cold pressing, screens such as aluminium foil are worn out easily, and like this, screens such as aluminium foil do not have the effect of shielding, cause the office of joint to put increasing, influence the performance of transformer.For stopping the generation of this situation, also can on the surface of joint of colding pressing, wrap up screens such as laminated aluminium foil, it is full that bag is filled out in cold pressing joint and strip conductor junction, though do not exist the joint of colding pressing to destroy the screen phenomenon like this, increased cost.
The utility model content
The utility model main purpose is to overcome the deficiency that above-mentioned prior art exists, the joint shielding construction of a kind of big capacity, strong current transformer device body lead-in wire is provided, can solve the joint of colding pressing and destroy the screen phenomenon, put with the office that reduces joint, cost is low, rational in infrastructure, technology is simple.
The technical scheme that technical problem adopted that the present invention solves is:
The joint electric shield structure of a kind of big capacity, strong current transformer device body lead-in wire comprises the two groups of leads and the screen that connect with the joint of colding pressing, it is characterized in that bag is provided with packed layer on the joint of colding pressing of two groups of leads, is surrounded by above-mentioned screen on packed layer.Packed layer can be cable paper and insulation crimped paper etc.
As preferably, described packed layer is a cable paper.
As preferably, screen is an aluminium foil.
Owing at the screen and the packed layers such as having increased cable paper between the joint of colding pressing, increase cost seldom, and the joint of colding pressing just can not hurt screen, has improved the function of shielding of screen, the office that has reduced transformer puts.Be easy to guarantee electrical distance for the high voltage product like this, reduced partial discharge and owing to hurt the electric discharge phenomena of the joint that screen causes, thereby partial discharge quantity is reduced significantly, and simple and practical, stable and reliable for performance, the scope of application is comparatively extensive.
The beneficial effects of the utility model are: the utility model has improved the shielding action of screen, has improved the reliability of transformer, and simple and practical, stable and reliable for performance.
Description of drawings
Below in conjunction with drawings and Examples utility model is further specified.
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the A-A profile of Fig. 1.
Among the figure: 1, strip conductor 2, cable paper 3, aluminium foil 4, the joint of colding pressing
Embodiment
As shown in Figure 1 and Figure 2, the joint electric shield structure of a kind of big capacity, strong current transformer device body lead-in wire, comprise the two groups of strip conductors 1 and the aluminium foil 3 that connect with the joint 4 of colding pressing, bag is provided with cable paper 2, the aluminium foil 3 that is surrounded by on cable paper 2 on the joint 4 of colding pressing of two groups of strip conductors 1.Because the joint 4 of colding pressing between aluminium foil 3 and two groups of strip conductor 1 joints has increased cable paper 2, increase cost seldom, the joint 4 of colding pressing of two groups of strip conductors 1 just can not hurt aluminium foil 3, has improved the function of shielding of aluminium foil 3, and the office that has reduced transformer puts.
Claims (3)
1. the joint electric shield structure of a big capacity, strong current transformer device body lead-in wire, comprise the two groups of leads and the screen that connect with the joint of colding pressing, it is characterized in that bag is provided with packed layer on the joint of colding pressing of two groups of leads, on packed layer, be surrounded by above-mentioned screen.
2. the joint electric shield structure of a kind of big capacity according to claim 1, strong current transformer device body lead-in wire is characterized in that described packed layer is a cable paper.
3. the joint electric shield structure of a kind of big capacity according to claim 1 and 2, strong current transformer device body lead-in wire is characterized in that described screen is an aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625206U CN201946416U (en) | 2010-12-09 | 2010-12-09 | Electrical shielding structure of joint of leading wire of body of high-capacity and high-current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206625206U CN201946416U (en) | 2010-12-09 | 2010-12-09 | Electrical shielding structure of joint of leading wire of body of high-capacity and high-current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946416U true CN201946416U (en) | 2011-08-24 |
Family
ID=44473753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206625206U Expired - Lifetime CN201946416U (en) | 2010-12-09 | 2010-12-09 | Electrical shielding structure of joint of leading wire of body of high-capacity and high-current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946416U (en) |
-
2010
- 2010-12-09 CN CN2010206625206U patent/CN201946416U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG JIANGSHAN TRANSFORMER CO., LTD. Free format text: FORMER NAME: JIANGSHAN TRANSFORMER CO., LTD., ZHEJIANG |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 324100, 84, Tiger Hill Road, Jiangshan, Zhejiang Patentee after: Zhejiang Jiangshan Transformer Co., Ltd. Address before: 324100, 84, Tiger Hill Road, Jiangshan, Zhejiang Patentee before: Zhejiang Jiangshan Transformer Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110824 |