CN202172250U - Cable gas insulation metal enclosed switch equipment GIS terminal - Google Patents
Cable gas insulation metal enclosed switch equipment GIS terminal Download PDFInfo
- Publication number
- CN202172250U CN202172250U CN2011203158288U CN201120315828U CN202172250U CN 202172250 U CN202172250 U CN 202172250U CN 2011203158288 U CN2011203158288 U CN 2011203158288U CN 201120315828 U CN201120315828 U CN 201120315828U CN 202172250 U CN202172250 U CN 202172250U
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- spring
- nylon sleeve
- stress cone
- springs
- gis terminal
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Abstract
The present utility model provides a cable gas insulation metal enclosed switch equipment GIS terminal. The terminal comprises a contact, a conductor fixing clamp, a grading ring, a stress cone, a nylon sleeve, springs and a shell. The contact is arranged outside the conductor fixing clamp, the grading ring is arranged between the conductor fixing clamp and the stress cone, the tail end of the stress cone is cone-shaped, the stress cone is fitted with the nylon sleeve in a butt joint way, the two ends of the springs are used for applying axial pressure on the nylon sleeve and the shell, and the number of the springs is at least three and the springs are arranged side by side. A whole large spring is substituted by a plurality of (such as six) axially flexible small springs, the elastic modulus of the small springs is the same as that of the large spring, thus the spring eddy current phenomenon can be effectively avoided. The shape of the nylon sleeve is changed into a short tail from a long tail, the cost is saved, and the force-bearing of the nylon sleeve is more even, and the interfacial pressure between the stress cone and a main insulating layer/an outer semi-conducting layer is more reasonable.
Description
Technical field
The utility model relates to electric cable accessories, relates in particular to a kind of Cubicle Gas-Insulated Switchgear terminal of crosslinked cable.
Background technology
Along with the fast development of power industry, China increases the increasing demand of 220kV power cable and annex thereof, comprising Cubicle Gas-Insulated Switchgear (Gas-Insulated metal-enclosed Swith gear, GIS) terminal.
In the existing GIS terminal, a kind of be used to connect SF6 Cubicle Gas-Insulated Switchgear (GIS) and 220kV cross-linked polyethylene insulated cable (abbreviation crosslinked cable) are arranged.Its critical component is that epoxy bushing (is the inner cone insulator; Encapsulating stress cone) and stress cone; Epoxy bushing plays insulation, mechanical support and sealing function, and its stress cone is an ethylene propylene diene monomer (EPDM) material, is used to carry out electric field stress control; Adopt large-scale rubber injection technology, tail end is designed to flat construction.
Because in the GIS terminal; Be to rely on the elasticity of stress cone material self to keep stress and the electrical strength on the interface between stress cone and main insulating layer and other elements; And the ethylene-propylene rubber material that stress cone adopted in the above-mentioned existing GIS terminal is harder, is difficult for compression (being that elasticity is not enough), and its tail end is a flat construction simultaneously; Make that all the pressure between stress cone and the cable body is not enough; In case the space occurs, can reduce its electrical strength, thereby increase the possibility that punctures cable and annex because of conduction.
Therefore need a kind ofly can guarantee enough electrical strengths, have the GIS terminal of higher insulation and security performance.The problems referred to above at number of patent application are: obtained solution among the 200610063131.X, the utility model improves the vortex phenomenon that its spring produces, and its nylon sleeve is optimized on the basis of above-mentioned patent.
Summary of the invention
In order to solve the problems of the prior art; The utility model provides a kind of Cubicle Gas-Insulated Switchgear GIS terminal of cable; It comprises contact, conductor geometrical clamp, grading ring, stress cone, nylon sleeve, spring, shell, and said contact is arranged on the periphery of said conductor geometrical clamp, and said grading ring is arranged between conductor geometrical clamp and the stress cone; Said stress cone tail end is tapered; Dock with said nylon sleeve is identical, the two ends of said spring impose axial compressive force to said nylon sleeve and shell, and said spring is at least three springs that are arranged side by side.
As the further improvement of the utility model, said spring is four to eight springs that evenly are provided with.
As the further improvement of the utility model, said spring is six springs that evenly are provided with.
As the further improvement of the utility model, said nylon sleeve be shaped as short-tail, the end of the length engaging spring of the tail end of said nylon sleeve.
As the further improvement of the utility model, also comprise the spring locating piece that is arranged on spring end, the spring locating piece of length engaging spring one end of the tail end of said nylon sleeve.
The beneficial effect of the utility model is: the spring of axial stretching, by whole big spring, make some (as 6) little springs into, and its modulus of elasticity is identical with big spring, can avoid spring to produce vortex phenomenon effectively.The shape of nylon sleeve also made short-tail into by former long-tail, like this in the cost-effective while, can guarantee the stressed more even of nylon jacket, made the interfacial pressure of stress cone and main insulating layer, outer semiconductive layer more reasonable.
[description of drawings]
Fig. 1 is the Cubicle Gas-Insulated Switchgear GIS terminal structure sketch map of a kind of cable of the utility model;
Fig. 2 is the structural representation of the amplification of spring and the nylon sleeve part among Fig. 1.
[embodiment]
Below in conjunction with description of drawings and embodiment the utility model is further specified.
As shown in Figure 1; Wherein crosslinked cable is made up of cable core 1, main insulating layer 6, outer semiconductive layer 8,13 of metallic sheaths, and the GIS terminal then comprises contact 2, conductor geometrical clamp 3, grading ring 4, stress cone 5, nylon sleeve 7, first sealing ring 9, snap ring 10, spring 11, shell 12, second sealing ring 14, compress volution 15, fastening volution 16, ward off plumbous 17, pyrocondensation protecting pipe 18, fluid sealant 19, ground wire 20.
A kind of Cubicle Gas-Insulated Switchgear GIS terminal of cable; It comprises contact 2, conductor geometrical clamp 3, grading ring 4, stress cone 5, nylon sleeve 7, spring 11, shell 12; Said contact 2 is arranged on the periphery of said conductor geometrical clamp 3; Said grading ring 4 is arranged between conductor geometrical clamp 3 and the stress cone 5, it is characterized in that: said stress cone 5 tail ends are tapered, coincide with said nylon sleeve 7 and dock; The two ends of said spring 11 impose axial compressive force to said nylon sleeve 7 with shell 12, at least three bar springs of said spring 11 for being arranged side by side.Said spring 11 is four to eight springs that evenly are provided with.Said nylon sleeve 7 be shaped as short-tail, the end of the length engaging spring 11 of the tail end of said nylon sleeve 7.Preferably: also comprise the spring locating piece that is arranged on spring 11 ends, the spring locating piece of length engaging spring 11 1 ends of the tail end of said nylon sleeve 7.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection range of the utility model.
Claims (5)
1. the Cubicle Gas-Insulated Switchgear GIS terminal of a cable; It comprises contact (2), conductor geometrical clamp (3), grading ring (4), stress cone (5), nylon sleeve (7), spring (11), shell (12); Said contact (2) is arranged on the periphery of said conductor geometrical clamp (3); Said grading ring (4) is arranged between conductor geometrical clamp (3) and the stress cone (5), it is characterized in that: said stress cone (5) tail end is tapered, coincide with said nylon sleeve (7) and docks; The two ends of said spring (11) impose axial compressive force to said nylon sleeve (7) and shell (12), four to the eight bar springs of said spring (11) for being arranged side by side.
2. the Cubicle Gas-Insulated Switchgear GIS terminal of a kind of cable according to claim 1 is characterized in that: said spring (11) is for evenly being provided with.
3. the Cubicle Gas-Insulated Switchgear GIS terminal of a kind of cable according to claim 2 is characterized in that: the six bar springs of said spring (11) for evenly being provided with.
4. according to the Cubicle Gas-Insulated Switchgear GIS terminal of any described a kind of cable of claim 1 to 3, it is characterized in that: said nylon sleeve (7) be shaped as short-tail, the end of the tail end engaging spring (11) of said nylon sleeve (7).
5. the Cubicle Gas-Insulated Switchgear GIS terminal of a kind of cable according to claim 4; It is characterized in that: also comprise the spring locating piece that is arranged on spring (11) end, the spring locating piece of tail end engaging spring (11) one ends of said nylon sleeve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203158288U CN202172250U (en) | 2011-08-26 | 2011-08-26 | Cable gas insulation metal enclosed switch equipment GIS terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203158288U CN202172250U (en) | 2011-08-26 | 2011-08-26 | Cable gas insulation metal enclosed switch equipment GIS terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172250U true CN202172250U (en) | 2012-03-21 |
Family
ID=45830436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203158288U Expired - Lifetime CN202172250U (en) | 2011-08-26 | 2011-08-26 | Cable gas insulation metal enclosed switch equipment GIS terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202172250U (en) |
-
2011
- 2011-08-26 CN CN2011203158288U patent/CN202172250U/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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |
|
| CX01 | Expiry of patent term |