CN202796522U - Excitation-free tap switch shielding cover - Google Patents
Excitation-free tap switch shielding cover Download PDFInfo
- Publication number
- CN202796522U CN202796522U CN 201220388173 CN201220388173U CN202796522U CN 202796522 U CN202796522 U CN 202796522U CN 201220388173 CN201220388173 CN 201220388173 CN 201220388173 U CN201220388173 U CN 201220388173U CN 202796522 U CN202796522 U CN 202796522U
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- CN
- China
- Prior art keywords
- insulating base
- cover
- base cover
- shielding cover
- tap switch
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- Expired - Lifetime
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Abstract
The utility model relates to an excitation-free tap switch shielding cover, comprising a cylindrical insulating base cover. The excitation-free tap switch shielding cover is characterized by comprising a semiconductor shielding layer, wherein the semiconductor shielding layer covers the outer cylinder wall of the insulating base cover or covers the inner cylinder wall and the outer cylinder wall of the insulating base cover. Compared with the prior art, the excitation-free tap switch shielding cover obtains the beneficial effects that 1, the traditional metal foil or metal foil paper winding structure is replaced by the semiconductor shielding layer, thus the phenomenon that the traditional metal foil or metal foil paper generates a sharp tip and is broken to puncture external insulation can be effectively avoided, and the excitation-free tap switch shielding cover is higher in reliability and simpler in structure; and 2, compared with the traditional structure, the excitation-free tap switch shielding cover is simpler, easier to process and lower in manufacturing cost.
Description
Technical field
The utility model relates to a kind of no-excitation tapping switch used in transformer radome.
Background technology
A kind of shielding cover of non-excited tap switch is disclosed in Chinese patent CN2857180Y, include the insulating base cover of tubular, outer tube wall and/or inner tube wall at insulating base cover are covered with metal screen layer, described metal screen layer is made of metallic foil or metal foil paper, by arrange in the shunting switch periphery radome with shunting switch in the electrified body of main each shape be isolated from the cover, make it transformer coil and casing are effectively shielded, can make like this structure of shunting switch become simple compact, the volume of switch is corresponding to be dwindled, and reduces thereby make switch take the transformer useful space.But, also there is following deficiency in said structure: the metal screen layer that is covered with at outer tube wall and/or the inner tube wall of insulating base cover is usually held by metallic foil or metal foil paper and forms, metallic foil or metal foil paper thinner thickness, may produce wedge angle and phenomenon of rupture, if fault location is perpendicular to ground plane then might puncture external insulation, affect office when serious and put, cost is also higher simultaneously.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure for above-mentioned the deficiencies in the prior art, the shielding cover of non-excited tap switch of dependable performance.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be: the insulating base cover that comprises tubular, it is characterized in that comprising the shield semiconductors layer, described shield semiconductors layer covers on the outer tube wall of insulating base cover or covers on the inside and outside barrel of insulating base cover.
By technique scheme, along the circumferential spiral winding shield semiconductors of insulating base cover outer tube wall layer, consist of the shield semiconductors layer of insulating base cover outer tube wall.
By technique scheme, twine the shield semiconductors layer along the axial barrel of insulating base cover, consist of the shield semiconductors layer of insulating base cover inside and outside wall.
By technique scheme, apply or electroplating of semiconductor material layer formation shield semiconductors layer at insulating base cover.
By technique scheme, described shield semiconductors layer is made of semiconductor crimped paper or semiconductor foil.
By technique scheme, on the inner tube wall of insulating base cover or shield semiconductors layer inwall be provided with equipotential metal connecting piece (line).
By technique scheme, described shield semiconductors layer directly is connected with the equipotential metal connecting piece.
By technique scheme, described equipotential metal connecting piece is made of metallic foil or metal braid.
By technique scheme, described insulating base cover is cylindrical shape.
The utility model beneficial effect obtained with respect to prior art is: 1, by adopting the shield semiconductors layer to replace virgin metal foil or metal foil paper winding arrangement, can effectively avoid virgin metal foil or metal foil paper to produce wedge angle and fracture and puncture the phenomenon of external insulation, reliability is higher.2, compare with original structure, the utility model is more simple, is easy to processing, and cost of manufacture is low.
Description of drawings
Fig. 1 is the positive view of first embodiment of the utility model.
Fig. 2 is the positive view of the second embodiment of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
First embodiment as shown in Figure 1, include columnar insulating base cover 1, inner tube wall at insulating base cover is provided with the equipotential metal connecting line 3 that is made of metallic foil or metal braid band, be used for being connected with the shunting switch equipotential, along the circumferential spiral winding shield semiconductors of insulating base cover outer tube wall layer 2, described shield semiconductors layer 2 is made of semiconductor crimped paper, up and down superimposed winding during winding, and the outer tube wall that consists of insulating base cover is covered with the radome of shield semiconductors layer.
Fig. 2 shows second embodiment of the present utility model, different from first embodiment is that the shield semiconductors layer is along the canoe of insulating base cover, axial barrel along insulating base cover twines semiconductor wrinkle paper band, the semiconductor wrinkle paper band that twines can before and after superimposed winding, superimposed degree can be 1/3～1/2 of semiconductor wrinkle paper bandwidth, and the inside and outside barrel that consists of thus insulating base cover all has the radome of shield semiconductors layer.
Claims (9)
1. shielding cover of non-excited tap switch comprises the insulating base cover of tubular it is characterized in that comprising the shield semiconductors layer, and described shield semiconductors layer covers on the outer tube wall of insulating base cover or covers on the inside and outside barrel of insulating base cover.
2. a kind of shielding cover of non-excited tap switch according to claim 1 is characterized in that along the circumferential spiral winding shield semiconductors of insulating base cover outer tube wall layer, consists of the shield semiconductors layer of insulating base cover outer tube wall.
3. a kind of shielding cover of non-excited tap switch according to claim 1 is characterized in that twining the shield semiconductors layer along the axial barrel of insulating base cover, consists of the shield semiconductors layer of insulating base cover inside and outside wall.
4. a kind of shielding cover of non-excited tap switch according to claim 1 is characterized in that applying or electroplating of semiconductor material layer formation shield semiconductors layer at insulating base cover.
5. according to claim 2 or 3 described a kind of shielding cover of non-excited tap switchs, it is characterized in that described shield semiconductors layer is made of semiconductor crimped paper or semiconductor foil.
6. according to claim 2 or 3 described a kind of shielding cover of non-excited tap switchs, it is characterized in that on the inner tube wall of insulating base cover or shield semiconductors layer inwall is provided with the equipotential metal connecting piece.
7. according to claim 2 or 3 described a kind of shielding cover of non-excited tap switchs, it is characterized in that described shield semiconductors layer directly is connected with the equipotential metal connecting piece.
8. a kind of shielding cover of non-excited tap switch according to claim 6 is characterized in that described equipotential metal connecting piece is made of metallic foil or metal braid.
9. according to claim 2 or 3 described a kind of shielding cover of non-excited tap switchs, it is characterized in that described insulating base cover is cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220388173 CN202796522U (en) | 2012-08-07 | 2012-08-07 | Excitation-free tap switch shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220388173 CN202796522U (en) | 2012-08-07 | 2012-08-07 | Excitation-free tap switch shielding cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796522U true CN202796522U (en) | 2013-03-13 |
Family
ID=47823732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220388173 Expired - Lifetime CN202796522U (en) | 2012-08-07 | 2012-08-07 | Excitation-free tap switch shielding cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789914A (en) * | 2012-08-07 | 2012-11-21 | 武汉泰普变压器开关有限公司 | Non-excited tapping switch shielding cover |
| CN104576177A (en) * | 2015-02-13 | 2015-04-29 | 陈�峰 | High-voltage vacuum arc-extinguishing chamber with aerogel filled structure |
-
2012
- 2012-08-07 CN CN 201220388173 patent/CN202796522U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789914A (en) * | 2012-08-07 | 2012-11-21 | 武汉泰普变压器开关有限公司 | Non-excited tapping switch shielding cover |
| CN102789914B (en) * | 2012-08-07 | 2015-05-27 | 武汉泰普变压器开关有限公司 | Non-excited tapping switch shielding cover |
| CN104576177A (en) * | 2015-02-13 | 2015-04-29 | 陈�峰 | High-voltage vacuum arc-extinguishing chamber with aerogel filled structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |