CN204668899U - Cold-contraction type medium voltage cable terminations - Google Patents
Cold-contraction type medium voltage cable terminations Download PDFInfo
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- CN204668899U CN204668899U CN201520306920.6U CN201520306920U CN204668899U CN 204668899 U CN204668899 U CN 204668899U CN 201520306920 U CN201520306920 U CN 201520306920U CN 204668899 U CN204668899 U CN 204668899U
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Abstract
A kind of cold-contraction type medium voltage cable terminations, comprise the shrinkage be socketed successively from bottom to up and divide spider, shrinkage insulated tube, cold-shrinkable terminal head and shrinkage sealed tube, described cold-shrinkable terminal head comprises insulating barrier, stress cone and rain skirt, described insulating barrier, stress cone and rain skirt are integrated by being injected into, described stress cone is positioned on the inwall of insulating barrier, and described rain skirt is positioned on the outer wall of described insulating barrier.The utility model have structure simple, use safer, be more prone to again the advantages such as installation simultaneously.
Description
Technical field
The utility model relates to power cable field, especially relates to a kind of cold-contraction type medium voltage cable terminations.
Background technology
In recent years, China's power construction is flourish.The demand of the medium-pressure power cable in electrical power trans mission/distribution system constantly increases, and meanwhile the demand of the accessory product of cable is also in simultaneous growth.Medium voltage cable terminations particularly in electric cable accessories, it be connected with electric equipments such as power transformation device, ring main unit, distribution boxs, to form complete electrical power trans mission/distribution system, visible, it plays very important role in the connection of medium-pressure power cable.
In prior art, medium voltage cable terminations is divided into thermal shrinkage type medium voltage cable terminations and cold-contraction type medium voltage cable terminations.
In prior art, thermal shrinkage type medium voltage cable terminations needs to use burning things which may cause a fire disaster to carry out it, and heat shrink is shaping just can complete installation, and be not therefore suitable for the field such as colliery, oil, usable range is narrower; And thermal shrinkage type cable terminal structure is stratified form, namely stress tube and insulating tube structure are independent part, because thermal shrinkage type electric cable accessories is that one-time heating shrinks permanent shaped, easily because heating is uneven cause defective tightness of fitting between layers, form gap; Also easily cause lower thickness or cracking isostructuralism to destroy because of over-heating, energising running, there is the inner potential faults such as creepage or breakdown.
In prior art, there is partially short phenomenon in the shrinkage insulated tube length in cold-contraction type medium voltage cable terminations, when causing installing, cable stripping length is inadequate, cause cable three-phase can not separate with vertically equidistant, after each parts installation, with electrical apparatus interstar connection arrange be fixedly connected with time, Distance Shortened between phase and phase can be caused; Particularly after energising runs, during rainy day, easily cause alternate flashover; And cold-shrinkable terminal head rain skirt structure place easily forms ponding, short time internal water accumulation is not competent, the filths such as easy sedimentating dust, conductive particle, in energising running for years, there is the potential faults such as creepage, flashover.
Utility model content
In order to overcome the problems referred to above, the utility model to society provide a kind of structure simple, use safer, be more prone to again the cold-contraction type medium voltage cable terminations installed simultaneously.
The technical solution of the utility model is: provide a kind of cold-contraction type medium voltage cable terminations, comprise the shrinkage be socketed successively from bottom to up and divide spider, shrinkage insulated tube, cold-shrinkable terminal head and shrinkage sealed tube, described cold-shrinkable terminal head comprises insulating barrier, stress cone and rain skirt, described insulating barrier, stress cone and rain skirt are integrated by being injected into, described stress cone is positioned on the inwall of insulating barrier, and described rain skirt is positioned on the outer wall of described insulating barrier.
As to improvement of the present utility model, the length of described shrinkage insulated tube is more than or equal to 400mm to be less than or equal to 550mm.
As to improvement of the present utility model, described insulating barrier electrically insulating silicone rubber material makes.
As to improvement of the present utility model, described stress cone semi-conductive silicone rubber material makes.
As to improvement of the present utility model, the spiral support thing that the inwall of described cold-shrinkable terminal head, described shrinkage insulated tube inwall, shrinkage sealed tube and described shrinkage divide the inwall of spider to be equipped with can to extract out.
The utility model is owing to have employed described insulating barrier, stress cone and rain skirt by being injected into the structure be integrated, make between insulating barrier of the present utility model and stress cone, all very close to each other between insulating barrier and rain skirt, so just can solve gap between layers and interfacial characteristics problem, extend useful life of the present utility model, also make the utility model use safer; Meanwhile, toast bonding rain skirt compare with traditional heat-shrink cable accessory on the outer wall of insulating barrier, the utility model is installed also very convenient, does not need baking bonding.Therefore, the utility model have structure simple, use safer, be more prone to again the advantage of installing simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of execution mode of the utility model.
Fig. 2 is the structural representation of the cold-shrinkable terminal head in Fig. 1.
Embodiment
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the instruction such as " " center ", " on ", D score, "front", "rear", "left", "right" in term be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " connection ", " being connected " should be interpreted broadly, and such as, can be fixedly connected with, and also can be that dismounting connects, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also can be indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term can be understood at concrete meaning of the present utility model.In addition, in description of the present utility model, except as otherwise noted, the implication of " multiple ", " some " is two or more.
Refer to Fig. 1 to Fig. 2, a kind of execution mode of what Fig. 1 and Fig. 2 disclosed is a kind of cold-contraction type medium voltage cable terminations, a kind of cold-contraction type medium voltage cable terminations, comprise the shrinkage be socketed successively from bottom to up and divide spider 5, shrinkage insulated tube 1, cold-shrinkable terminal head 2 and shrinkage sealed tube 3, described cold-shrinkable terminal head 2 comprises insulating barrier 21, stress cone 22 and rain skirt 23, described insulating barrier 21, stress cone 22 and rain skirt 23 are integrated by being injected into, described stress cone layer 22 is positioned on the inwall of insulating barrier 21, and described rain skirt 23 is positioned on the outer wall of described insulating barrier 21.
In the utility model, in order to extend the stripping distance of cable 6, make that described cable 6 three is alternate to be maintained a certain distance (in figure length shown in D), the length (in figure length shown in A) of described shrinkage insulated tube 1 is set to and is more than or equal to 400mm and is less than or equal to 550mm, described cable 6 oversheath stripping length (in figure length shown in C) is set to and is more than or equal to 700mm and is less than or equal to 900mm, thus, extend the stripping distance of cable 6 on the whole, after making to install, described cable 6 three is alternate separately fixing with vertical range, make there are enough distances between phase and phase, also be just unlikely to there is rainy day ponding and cause creepage, the hidden danger such as flashover.
In the utility model, preferably, described insulating barrier 21 makes of electrically insulating silicone rubber material; Described stress cone 22 makes of semi-conductive silicone rubber material.
In the utility model, preferably, the inwall of described shrinkage sealed tube 3, described shrinkage insulated tube 1 inwall and cold-shrinkable terminal head 2 and the described shrinkage spiral support thing (picture) that divides the inwall of spider to be equipped with can to extract out.
Installation process of the present utility model is as follows:
First described insulating barrier 21, stress cone 22 and rain skirt 23 are become an entirety by mold injects, then expanded with plastic spiral supporter through expanding, serving as a contrast; During installation, after power cable 7 stripping being handled well, point spider 5 is installed to shrink be threephase cable in cable 6(present embodiment), then overlap respectively in the upper end of point spider 5 and connect shrinkage insulated tube 1; Described cold-shrinkable terminal head 2 is socketed in the upper end of described shrinkage insulated tube 1, plastic spiral supporter in described cold-shrinkable terminal head 2 is extracted out, 2, described cold-shrinkable terminal head is pressed on cable insulation 62 and cable shield 63, and described shrinkage sealed tube 3 is socketed on the upper port place of described cold-shrinkable terminal head 2; The binding post 4 at described shrinkage sealed tube 3 place is connected with cable core 61.
In the utility model, preferably, the shape of described stress cone 2 is horn-like.
Claims (5)
1. a cold-contraction type medium voltage cable terminations, comprise the shrinkage be socketed successively from bottom to up and divide spider (5), shrinkage insulated tube (1), cold-shrinkable terminal head (2) and shrinkage sealed tube (3), described cold-shrinkable terminal head (2) comprises insulating barrier (21), stress cone (22) and rain skirt (23), described insulating barrier (21), stress cone (22) and rain skirt (23) are integrated by being injected into, described stress cone (22) is positioned on the inwall of insulating barrier (21), and described rain skirt (23) is positioned on the outer wall of described insulating barrier (21).
2. cold-contraction type medium voltage cable terminations according to claim 1, is characterized in that: the length of described shrinkage insulated tube (1) is more than or equal to 400mm to be less than or equal to 550mm.
3. cold-contraction type medium voltage cable terminations according to claim 1 and 2, is characterized in that: described insulating barrier (21) makes of electrically insulating silicone rubber material.
4. cold-contraction type medium voltage cable terminations according to claim 1 and 2, is characterized in that: described stress cone (22) makes of semi-conductive silicone rubber material.
5. cold-contraction type medium voltage cable terminations according to claim 1 and 2, is characterized in that: the inwall of described shrinkage sealed tube (3), described shrinkage insulated tube (1) inwall, cold-shrinkable terminal head (2) and shrinkage divide the inwall of spider (5) to be equipped with the spiral support thing that can extract out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306920.6U CN204668899U (en) | 2015-05-14 | 2015-05-14 | Cold-contraction type medium voltage cable terminations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520306920.6U CN204668899U (en) | 2015-05-14 | 2015-05-14 | Cold-contraction type medium voltage cable terminations |
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| CN204668899U true CN204668899U (en) | 2015-09-23 |
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| CN201520306920.6U Active CN204668899U (en) | 2015-05-14 | 2015-05-14 | Cold-contraction type medium voltage cable terminations |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336549A (en) * | 2016-08-22 | 2017-01-18 | 长春市宇程机电有限公司 | Heat shrinkable cable accessory and preparation method thereof |
| CN107946006A (en) * | 2017-10-12 | 2018-04-20 | 国网山东省电力公司青岛供电公司 | A kind of insulating sheath for suspended insulated guide wire tie point |
| CN109546606A (en) * | 2018-11-24 | 2019-03-29 | 红旗集团电力金具有限公司 | A kind of cold-contraction type cable termination |
-
2015
- 2015-05-14 CN CN201520306920.6U patent/CN204668899U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336549A (en) * | 2016-08-22 | 2017-01-18 | 长春市宇程机电有限公司 | Heat shrinkable cable accessory and preparation method thereof |
| CN107946006A (en) * | 2017-10-12 | 2018-04-20 | 国网山东省电力公司青岛供电公司 | A kind of insulating sheath for suspended insulated guide wire tie point |
| CN109546606A (en) * | 2018-11-24 | 2019-03-29 | 红旗集团电力金具有限公司 | A kind of cold-contraction type cable termination |
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| C14 | Grant of patent or utility model | ||
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