CN2640060Y - Shrinkage power cable terminal end - Google Patents
Shrinkage power cable terminal end Download PDFInfo
- Publication number
- CN2640060Y CN2640060Y CN 03271395 CN03271395U CN2640060Y CN 2640060 Y CN2640060 Y CN 2640060Y CN 03271395 CN03271395 CN 03271395 CN 03271395 U CN03271395 U CN 03271395U CN 2640060 Y CN2640060 Y CN 2640060Y
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- China
- Prior art keywords
- terminal
- terminal bodies
- power cable
- cable
- stress cone
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a cold shrinkage type electric power cable terminal, belonging to the cable technical field, which aims to solve the disadvantage existed in the split terminal device. The utility model adopts the technical proposal that: the utility model comprises a stress cone, a terminal body. The stress cone is a trumpet-shaped conductive silicone rubber part and is injection molded with the terminal. The inner diameter is flushed with inner diameter of the terminal body. The external circumference is inserted in the terminal body. The cavity of the terminal is also provided with a support tube which is formed by the support plastic strip spiral lapping. The utility model makes the structure of the cable terminal simpler, and the fixation more convenient, which avoids the trouble caused by the winding stress and can also ensure the good lapping between an outer half conductive layer of the cable and the stress. The heating problem caused by applying the discrete stress cone and the problem that the partial discharging level increases are solved. The adoption of the support tube makes the fixation more labor-saving and convenient.
Description
Technical field
The utility model relates to a kind of power cable terminal head, belongs to the cable and wire technical field.
Background technology
At present, commercially available shrinkage electric cable fitting comprises following assembly: be used for shrinkage fingerstall that three-core cable divides core, be installed on core fingerstall upper end the shrinkage vial, finish the cable shrinkage terminal of power cable terminal.In the routine of cable shrinkage terminal is made, should contain the electric stress control assembly, these parts often adopt the mode and the applied stress wimble structure of reel stress band.The shortcoming of reel stress band mode is to make troubles to installation.And in the structure of applied stress awl, stress cone and terminal bodies are separate parts, need during installation successively to install in succession, waste time and energy the non-Gradient distribution of electrical parameter of simultaneously discrete stress cone, occur easily forming contact heating with the cable outer semiconducting layer, if stress cone, or is installed and had error in conjunction with not tight with terminal bodies, form step easily and bring the space, cause the local discharging level of whole terminal to improve, long-term use will make the life-span of electric cable accessories be affected.
Summary of the invention
The utility model is used to overcome the existing drawback of split terminal part and a kind of stress cone and terminal bodies are provided is power cable terminal head one, that have unique high-k electric stress control, easy to use, that overall performance electrical performance is stable.
The technical scheme that addresses the above problem is:
A kind of cold-shrink type power cable terminal head, it comprises stress cone, terminal bodies, its improvements are, its stress cone is horn-like conductive silicon rubber spare, be embedded in the terminal bodies and with terminal bodies injection moulding in one, its internal diameter flushes with the internal diameter of terminal bodies, excircle is embedded in the terminal bodies, also be provided with stay pipe in the cavity of terminal bodies, stay pipe forms by supporting plastic strip curl overlap joint.
Above-mentioned cold-shrink type power cable terminal head, insulated umbrella uniformly at intervals on the excircle of described terminal bodies.
Above-mentioned cold-shrink type power cable terminal head, a lateral edges on the last plane of described support plastic strip is fluted, and there is raised line at the opposite side edge of lower plane, and their shape is mated mutually, inlays mutually during the rotation overlap joint.
Above-mentioned cold-shrink type power cable terminal head, the internal diameter of described terminal bodies (not expansion state) is 12-22.7mm, and external diameter is 31-41.7mm, and the external diameter of insulated umbrella is 60-70mm, the length 235 ± 33mm of terminal bodies.
The cable terminal that provides according to the utility model, stress cone and terminal bodies are made as one, make the structure of cable terminal simpler, site operation is convenient, avoided the trouble of reel stress band, and can guarantee that the outer semiconducting layer of cable and stress cone overlap joint are good, solved the problem that adopts heating that discrete stress cone brings and local discharging level to increase.Stay pipe in the terminals is prefabricated in the factory, and only needs pull can make terminals and cable positive engagement once when installing at the scene, install save time, laborsaving, simple and direct, convenient.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the structural representation of stay pipe.
Embodiment
As we can see from the figure, the utility model comprises stress cone 1, terminal bodies 2, and stress cone 1 is an one with terminal bodies 2, and its internal diameter flushes with the internal diameter of terminal bodies 2, and excircle is embedded in the terminal bodies 2.Earlier in mould, make stress cone 1 during making, then stress cone 1 is placed in the mould of cable terminal, pour into a mould the liquid electrically insulating silicone rubber with conductive silicon rubber, together with stress cone 1, the general injection sulfidization molding, thus make the cable terminal of one.Because stress cone 1 internal orifice dimension and terminal bodies 2 internal orifice dimensions are in full accord, so in conjunction with no step.Also show among the figure, evenly be spaced insulated umbrella 5 on the excircle of terminal bodies, its effect is to increase the periphery distance, strengthens creepage distance, improves insulation effect.
Can also see in the drawings, also be provided with stay pipe 3 in the cavity of terminal bodies 2, stay pipe 3 forms by supporting plastic strip 4 curls rotation overlap joint.It is fluted 6 to support the lateral edges on last plane of plastic strip 4, and there is raised line 7 at the opposite side edge of lower plane, and their shape is mated mutually, inlays mutually when rotation overlaps.
The cable 9 that also draws among the figure, cable 9 is positioned on the central axial line, and what show among the figure is the situation about peeling off of having carried out, so the diameter of cable 9 is anterior inconsistent with the rear portion.
Cable terminal with terminal bodies 2 expansions, is inserted the stay pipe 3 that overlap joint is finished when making, make the cavity diameter of terminal bodies 2 bigger than the diameter of cable, install very laborsavingly, will take out stay pipe 3 after the terminals installing and locating again, terminal bodies 2 is tightened be wrapped on the cable.When taking out stay pipe 3, hold stay pipe 3 by the innermost support plastic strip of cable head, in the cavity of stay pipe 3, outwards pull out because stay pipe 3 cavity diameters are greater than the diameter of cable, gap wherein can make to pull out and support plastic strip 4 and be easy to.When pulling out, the groove that inlays 6 and the raised line 7 that support lower plane on the plastic strip 4 are separated from each other, and stay pipe 3 disintegrates thereupon.Along with the support plastic strip 4 of forming stay pipe 3 is pulled out gradually, the length of stay pipe 3 constantly reduces, and terminal bodies 2 will tighten, and cable is packed tightly fully.
Fig. 3 is the structure shaft side figure that supports plastic strip, can see that the lateral edges on the last plane of supporting plastic strip 4 is fluted 6, and there is raised line 7 at the opposite side edge of lower plane, and they inlay mutually.
The terminal bodies 2 that shows among the figure is not having supported tube stay time-out, it internal diameter be 12-22.7mm, external diameter is 31-41.7mm, the external diameter of insulated umbrella is 60-70mm, length 235 ± the 33mm of terminal bodies, above-mentioned data are applicable to the cable terminal of 10KV, the sectional area of more high-tension cable increases, the also corresponding increase of the size of terminals, its structure is consistent with the utility model.
Claims (5)
1. cold-shrink type power cable terminal head, it comprises stress cone [1], terminal bodies [2], it is characterized in that: described stress cone [1] is horn-like conductive silicon rubber spare, be embedded in the terminal bodies and with terminal bodies [2] injection moulding in one, its internal diameter flushes with the internal diameter of terminal bodies [2], and excircle is embedded in the terminal bodies [2].
2. cold-shrink type power cable terminal head according to claim 1 is characterized in that: be provided with stay pipe [3] in the cavity of terminal bodies [2], stay pipe [3] forms by supporting plastic strip [4] curl rotation overlap joint.
3. cold-shrink type power cable terminal head according to claim 2 is characterized in that: insulated umbrella [5] uniformly at intervals on the excircle of described terminal bodies [2].
4. cold-shrink type power cable terminal head according to claim 3, it is characterized in that: a lateral edges on the last plane of described support plastic strip [4] is provided with groove [6], the opposite side edge of lower plane is provided with raised line [7], and their shape is mated mutually, inlays mutually during the rotation overlap joint.
5. cold-shrink type power cable terminal head according to claim 4 is characterized in that: the internal diameter of described terminal bodies [2] is 12-22.7mm, and external diameter is 31-41.7mm, and the external diameter of insulated umbrella [5] is 60-70mm, and the length of terminal bodies [2] is 235 ± 33mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271395 CN2640060Y (en) | 2003-07-28 | 2003-07-28 | Shrinkage power cable terminal end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271395 CN2640060Y (en) | 2003-07-28 | 2003-07-28 | Shrinkage power cable terminal end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2640060Y true CN2640060Y (en) | 2004-09-08 |
Family
ID=34300717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03271395 Expired - Fee Related CN2640060Y (en) | 2003-07-28 | 2003-07-28 | Shrinkage power cable terminal end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2640060Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010096953A1 (en) * | 2009-02-26 | 2010-09-02 | 戚郁芬 | Communication cable connection box with waterproof device of elastic rubber shrinking pipe |
-
2003
- 2003-07-28 CN CN 03271395 patent/CN2640060Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010096953A1 (en) * | 2009-02-26 | 2010-09-02 | 戚郁芬 | Communication cable connection box with waterproof device of elastic rubber shrinking pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040908 Termination date: 20120728 |