CN201742071U - High-voltage cable combined stress control cable terminal - Google Patents
High-voltage cable combined stress control cable terminal Download PDFInfo
- Publication number
- CN201742071U CN201742071U CN2010202476819U CN201020247681U CN201742071U CN 201742071 U CN201742071 U CN 201742071U CN 2010202476819 U CN2010202476819 U CN 2010202476819U CN 201020247681 U CN201020247681 U CN 201020247681U CN 201742071 U CN201742071 U CN 201742071U
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- cable
- insulated jacket
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- insulating coating
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Abstract
The utility model relates to the technical field of the power cable, in particular to a high-voltage cable combined stress control cable terminal, which comprises an insulated jacket, wherein the center of the insulated jacket is vertically provided with a cable in a penetrating way, the lower end of the insulated jacket is provided with an electric conduction stress cone, and the upper end of the insulated jacket is fixedly connected with a shielding case; and the utility model is characterized in that the lower end of the insulated jacket and the electric conduction stress cone are provided with semiconductive high dielectric constant control cones. The utility model has the advantages of reasonable structure, stable performance, good tightness, long service life, wide application range and the like.
Description
Technical field
The utility model relates to the power cable technical field, is the compound Stress Control cable termination of a kind of high-tension cable.
Background technology
The terminal external shield gap of high voltage power cable is because of the change of earth potential boundary condition, electric field strength is undergone mutation herein, for improving Potential distribution herein, need increase cable termination at cable end piece and control, improve herein Potential distribution, tradition method commonly used has following several: 1. geometric method: the conduction stress cone; 2. parametric method: adopt the semiconductive high dielectric constant material or adopt non-linear electric conducting material; 3. electric capacity is controlled method: adopt the electric capacity stress cone to force all to press.More than the method for several electric field stress control all use separately, and generally reach allowable value by the maximum tangential electric field strength that adopts methods such as the radius of curvature of adjusting stress cone, length, increase insulation thickness to reduce each interface and be evenly distributed with relative, the physical dimension of cable termination is all relatively large under identical electric pressure.
Fig. 1 is for only having the high-tension cable Stress Control cable termination of conduction stress cone in the prior art, the Electric Field Distribution uniformity of this cable end piece is relatively poor, and electric property is not good enough, and useful life is low.
Summary of the invention
The purpose of this utility model is to overcome the problem that prior art exists, and provides a kind of rational in infrastructure, dependable performance, good airproof performance, the compound Stress Control cable termination of the high-tension cable of long service life.
The purpose of this utility model is realized by following technical scheme: the compound Stress Control cable termination of a kind of high-tension cable, it comprises insulating coating, center at insulating coating vertically is coated with cable, the lower end of insulating coating is equipped with the conduction stress cone, the upper end and the radome of insulating coating are connected, and it is characterized in that: be equipped with semiconductive high-k control awl on the lower end of insulating coating, conduction stress cone.
The compound Stress Control cable termination of high-tension cable of the present utility model, because the compound Stress Control unit that adopts the stack of conduction stress cone and semiconductive high-k control awl to constitute jointly controls the Electric Field Distribution of cable end piece, the electric field that semiconductive high-k control awl can be concentrated conduction stress cone horn mouth place is relatively forced to extend upward vertically once more, reach the effect of stress evacuating, make the cable insulation surface of cable termination, the Electric Field Distribution of cable termination air interface is more even, and maximum field strength has the decline of nearly 20% amplitude, therefore, the compound Stress Control cellular construction that adopts the stack of conduction stress cone and semiconductive high-k control awl to constitute can be at high pressure, be used widely in the superhigh pressure field, its structural design size is reasonable, reduced manufacturing cost and use cost, and improved the electric property of cable termination, particularly under the situation of heavy pollution, because of the product air along the significantly reduction of over glaze to field intensity, press effect better to the antifouling lightning that improves cable termination, have rational in infrastructure, dependable performance, good airproof performance, long service life, advantages such as applied range.
Description of drawings
Fig. 1 is existing high-tension cable Stress Control cable termination structure cross-sectional schematic.
The compound Stress Control cable termination of Fig. 2 high-tension cable of the present utility model structure cross-sectional schematic.
Among the figure: 1 outlet terminal, 2 radomes, 3 cables, 4 insulating coatings, 5 conduction stress cones, 6 semiconductive high-ks control awl.
Embodiment
The utility model is described in further detail to utilize drawings and Examples below
With reference to Fig. 2, the compound Stress Control cable termination of high-tension cable of the present utility model has insulating coating 4, center at insulating coating 4 vertically is coated with cable 3, the upper end of cable 3 is connected with outlet terminal 1, the lower end of insulating coating 4 is equipped with conduction stress cone 5, the upper end of insulating coating 4 and radome 2 are connected, and are equipped with semiconductive high-k control awl 6 on the lower end of insulating coating 4, conduction stress cone 5.Being equipped with semiconductive high-k control awl 6 on the lower end of insulating coating 4, conduction stress cone 5 adopts two kinds of materials to become one with mould is compound.Described insulating coating 4 adopts high-performance and the cheap relatively ethylene propylene diene monomer (EPDM) material of cost to make.Described conduction stress cone 5 adopts high pressure resistant silicon rubber or high pressure resistant Ethylene Propylene Terpolymer conductive rubber material to make.Semiconductive high-k control awl 6 adopts silicon rubber or the ethylene propylene diene monomer (EPDM) material that can realize the semiconductive high-k to make.High pressure resistant silicon rubber, high pressure resistant Ethylene Propylene Terpolymer conductive rubber and can realize that the silicon rubber of semiconductive high-k or ethylene propylene diene monomer (EPDM) material are the commercially available prod.
Claims (1)
1. compound Stress Control cable termination of high-tension cable, it comprises insulating coating, center at insulating coating vertically is coated with cable, the lower end of insulating coating is equipped with the conduction stress cone, the upper end and the radome of insulating coating are connected, and it is characterized in that: be equipped with semiconductive high-k control awl on the lower end of insulating coating, conduction stress cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202476819U CN201742071U (en) | 2010-06-30 | 2010-06-30 | High-voltage cable combined stress control cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202476819U CN201742071U (en) | 2010-06-30 | 2010-06-30 | High-voltage cable combined stress control cable terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201742071U true CN201742071U (en) | 2011-02-09 |
Family
ID=43557349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202476819U Expired - Fee Related CN201742071U (en) | 2010-06-30 | 2010-06-30 | High-voltage cable combined stress control cable terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201742071U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159868A (en) * | 2016-08-03 | 2016-11-23 | 清华大学 | Use the ac cable termination of non-linear preformed rubber stress cone |
| CN113504442A (en) * | 2021-07-14 | 2021-10-15 | 国网北京市电力公司 | Coil-mounted high-voltage emergency repair cable detection device |
-
2010
- 2010-06-30 CN CN2010202476819U patent/CN201742071U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159868A (en) * | 2016-08-03 | 2016-11-23 | 清华大学 | Use the ac cable termination of non-linear preformed rubber stress cone |
| CN113504442A (en) * | 2021-07-14 | 2021-10-15 | 国网北京市电力公司 | Coil-mounted high-voltage emergency repair cable detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20190630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |