CN201829912U - Stress cone for 10kV silicone rubber cable accessories - Google Patents
Stress cone for 10kV silicone rubber cable accessories Download PDFInfo
- Publication number
- CN201829912U CN201829912U CN2010205814198U CN201020581419U CN201829912U CN 201829912 U CN201829912 U CN 201829912U CN 2010205814198 U CN2010205814198 U CN 2010205814198U CN 201020581419 U CN201020581419 U CN 201020581419U CN 201829912 U CN201829912 U CN 201829912U
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- stress cone
- silicone rubber
- horn mouth
- cable
- utility
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Abstract
The utility model relates to a stress cone for 10kV silicone rubber cable accessories. The inner diameter of the stress cone is cylindrical, one end of the stress cone is provided with a horn mouth (1), the cross section of the stress cone takes the shape of an arc line, and the wall thickness of the part with cylindrical inner wall in the stress cone gradually increases from the end without the horn mouth to the end with the horn mouth. In the utility model, under the condition of not affecting the clamping pressure of accessory products on cable interfaces, magnitude of interference is reduced as much as possible, and silicone rubber works in the range of allowable tensioning by changing curve shape of the stress cone and increasing the wall thickness of the stress cone, so as to enable the distribution of electric-field strength at each point in the accessories to achieve the most reasonable state.
Description
Technical field
The utility model is a kind of stress cone structure that is used for power cable with cross-linked polyethylene insulation silicon rubber shrinkage annex, especially is applied to indoor terminal, the stress cone of outdoor terminal and transition joint, specifically a kind of 10kV silicone rubber for cable annex stress cone.
Background technology
The existing power cable, mainly contain oil-impregnated paper insulation cable and twisted polyethylene cable two classes, the crosslinked cable prefabricated terminal adopts the isotropic elastomeric material of electric property to make rubber stress cone, stress cone is sleeved on the cable outside, and the electrical strength of rubber stress cone and crosslinked cable contact-making surface is subjected to the influence of rubber stress cone to cable interface thrust factor easily.
The stress cone structure that is applied to 10KV power cable with cross-linked polyethylene insulation silicon rubber shrinkage annex at present is thiner, as shown in Figure 2, and for the compaction forces that improves cable interface all adopts the method that increases the magnitude of interference.Cause in running because silicon rubber flexibility decrease under high stretch effects, influence the electric cable accessories electric property thereby the compaction forces of cable interface reduced.
Summary of the invention
The purpose of this utility model is thin at present stress cone structure, for the compaction forces that improves cable interface all adopts the method that increases the magnitude of interference.Caused in running because silicon rubber flexibility decrease under high stretch effects, the compaction forces of cable interface is reduced and influences the problem of electric cable accessories electric property, a kind of 10kV silicone rubber for cable annex stress cone is proposed.Reduce the magnitude of interference under to the situation of the compaction forces of cable interface not influencing accessory product as far as possible, silicon rubber is operated in allows within the range of stretch, make the inner each point electric-field intensity distribution of annex reach the most rational state.
The technical solution of the utility model is:
A kind of 10kV silicone rubber for cable annex stress cone, the internal diameter of stress cone is cylindrical, and an end of stress cone is provided with horn mouth, and its section is camber line shape.
The cylindrical part of inwall in the stress cone of the present utility model, wall thickness never have a bell-mouthed end and increase successively to having a bell-mouthed end.
Bell-mouthed radial thickness of the present utility model is greater than the wall thickness of the cylindrical part of inwall.
The joining place thickness maximum of the horn mouth of stress cone of the present utility model and the cylindrical part of inwall.
The beneficial effects of the utility model:
New type rubber stress cone structure of the present utility model, reduce the magnitude of interference under to the situation of the compaction forces of cable interface not influencing accessory product as far as possible, by curve shape that changes stress cone and the thickness that increases the stress cone wall, silicon rubber is operated in allows within the range of stretch, make the inner each point electric-field intensity distribution of annex reach the most rational state.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of traditional stress cone.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind of 10kV silicone rubber for cable annex stress cone, the internal diameter of stress cone is cylindrical, and an end of stress cone is provided with horn mouth 1, and its section is camber line shape.
The cylindrical part of inwall in the stress cone of the present utility model, wall thickness never have a bell-mouthed end and increase successively to having a bell-mouthed end.
The radial thickness of the utility model horn mouth 1 is greater than the wall thickness of the cylindrical part of inwall; In the horn mouth 1 of stress cone and the joining place thickness maximum of the cylindrical part of inwall.
The utility model reduces the magnitude of interference under to the situation of the compaction forces of cable interface not influencing accessory product as far as possible, by curve shape that changes stress cone and the thickness that increases the stress cone wall, silicon rubber is operated in allows within the range of stretch, adopt rational shaped form stress cone, make the inner each point electric-field intensity distribution of annex reach the most rational state.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (4)
1. 10kV silicone rubber for cable annex stress cone, the internal diameter of stress cone is cylindrical, it is characterized in that an end of stress cone is provided with horn mouth (1), and its section is camber line shape.
2. 10kV silicone rubber for cable annex stress cone according to claim 1 is characterized in that the cylindrical part of inwall in the described stress cone, and wall thickness never has a bell-mouthed end and increases successively to having a bell-mouthed end.
3. 10kV silicone rubber for cable annex stress cone according to claim 1 is characterized in that the wall thickness of the radial thickness of described horn mouth (1) greater than the cylindrical part of inwall.
4. 10kV silicone rubber for cable annex stress cone according to claim 3 is characterized in that the horn mouth (1) of described stress cone and the joining place thickness maximum of the cylindrical part of inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205814198U CN201829912U (en) | 2010-10-29 | 2010-10-29 | Stress cone for 10kV silicone rubber cable accessories |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205814198U CN201829912U (en) | 2010-10-29 | 2010-10-29 | Stress cone for 10kV silicone rubber cable accessories |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829912U true CN201829912U (en) | 2011-05-11 |
Family
ID=43968426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205814198U Expired - Lifetime CN201829912U (en) | 2010-10-29 | 2010-10-29 | Stress cone for 10kV silicone rubber cable accessories |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666963A (en) * | 2018-05-10 | 2018-10-16 | 广东阿尔派新材料股份有限公司 | The special silicone rubber electric field stress control method of 220kV cable termination attachmentes |
-
2010
- 2010-10-29 CN CN2010205814198U patent/CN201829912U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108666963A (en) * | 2018-05-10 | 2018-10-16 | 广东阿尔派新材料股份有限公司 | The special silicone rubber electric field stress control method of 220kV cable termination attachmentes |
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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 |
Granted publication date: 20110511 |
|
| CX01 | Expiry of patent term |