CN202258513U - Low-stress power cable - Google Patents
Low-stress power cable Download PDFInfo
- Publication number
- CN202258513U CN202258513U CN2011203802190U CN201120380219U CN202258513U CN 202258513 U CN202258513 U CN 202258513U CN 2011203802190 U CN2011203802190 U CN 2011203802190U CN 201120380219 U CN201120380219 U CN 201120380219U CN 202258513 U CN202258513 U CN 202258513U
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- cable
- conductor
- shaped conductor
- power cable
- fan
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Abstract
The utility model discloses a low-stress power cable, aiming to solve the technical problem of providing a low-stress power cable which can avoid a snake-like shape, turning of cable cores and difficulties in bending. In order to solve the technical problem, the following technical scheme is adopted: the low-stress power cable comprises a fan-shaped conductor and an insulation layer, the insulation layer is coated outside the fan-shaped conductor through extrusion molding, and the fan-shaped conductor is a spiral fan-shaped conductor. Compared with the prior art, the cable conductor is pre-pressed into the spiral fan-shaped conductor, the insulation layer is arranged on the spiral fan-shaped conductor through extrusion molding, the cable is made with spiral cable cores, and the problems of the snake-like shape, turning of the cable cores and difficulties in bending can be solved.
Description
Technical field
The utility model relates to a kind of low stress power cable.
Background technology
3 cores in the market, 4 cores, 5 core rated voltage 0.6/1kV power cables are in order to reduce the outside diameter of cable, generally from 50mm
2～300mm
2Specification all adopts sector conductor; The outside diameter of cable can lack than the insulated wire cores diameter of round conductor after such conductor insulation core stranding, thereby has reduced the material cost of cable, but this structure has also been brought some other problems; Harder like cable; Be not easy bending, produce snakelikely, core stands up easily and causes short circuit etc.
Summary of the invention
The technical problem that the utility model will solve provide a kind of avoid occurring snakelike, core stands up, do not allow flexible low stress power cable.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of low stress power cable, comprise sector conductor and insulating barrier, and the insulating barrier extrusion molding is coated on outside the sector conductor, and said sector conductor is the spirality sector conductor.
The screw pitch of the said sector conductor of the utility model equals the pitch of cable core.
The utility model compared with prior art presses the curl sector conductor with cable conductor in advance, extrusion molding insulating barrier outside the helical form sector conductor, then with these spiral core strandings, can solve cable snake shaped, core stands up, be not easy problems such as bending.
Description of drawings
Fig. 1 is the cable core structural representation of prior art.
Fig. 2 is the structural representation of the utility model cable core.
Fig. 3 is the sectional structure chart behind the utility model cable core stranding.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further explain.
As shown in Figure 1, conventional sector conductor insulated wire cores structure comprises fan-shaped conductor 1 and external insulation layer 2 in the prior art.Conductor 1 presses the shape sector conductor that is in line through pressure roller, through the cabler rotation core is twisted into spirality during such core stranding, is formed into cable core.Can not discharge owing to form big internal stress on the conductor, therefore cause cable core to stand up easily and damage insulation and cause short circuit.And the cable stranding lay ratio of this structure can not be too little, and generally more than 25 times, the too little meeting of pitch is with the cable conductor torsional deformation, so cable is harder.The bending radius minimum of general this cable can reach 12 times of cable size.Owing to lost the torsion of cabler, therefore often become snakelike with tail cable at the beginning of cable production and tail end in beginning.
Like Fig. 2, shown in Figure 3, the utility model low stress power cable comprises sector conductor 3 and insulating barrier 4, and insulating barrier 4 extrusion moldings are coated on outside the sector conductor 3, and sector conductor 3 is the spirality sector conductor, and the screw pitch of sector conductor 3 equals the pitch of cable core.Sector conductor 3 presses the spirality sector conductor through the pressure roller of rotation; This sector conductor is set every conductor screw pitch for pitch that cable becomes cable core through accurate Calculation twisted wire line speed with the pressure roller rotary speed; Through the plastic extruding machine insulating barrier, be formed into cable core according to conductor screw pitch stranding then.Internal stress is minimum on this stranding mode conductor, so cable core can not stand up and damages insulation.Cable stranding lay ratio can be very little, and cable is also very submissive, and the bending radius of cable can reach 8 times of cable size.Because cable core does not need the torsion of cabler when stranding, so cable can not form snakelike.Almost do not have stress on the conductor behind this cable stranding, make cable rounding, submissive more, crooked easily.
Claims (2)
1. a low stress power cable comprises sector conductor (3) and insulating barrier (4), and insulating barrier (4) extrusion molding is coated on outside the sector conductor (3), it is characterized in that: said sector conductor (3) is the spirality sector conductor.
2. low stress power cable according to claim 1 is characterized in that: the screw pitch of said sector conductor (3) equals the pitch of cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203802190U CN202258513U (en) | 2011-10-09 | 2011-10-09 | Low-stress power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203802190U CN202258513U (en) | 2011-10-09 | 2011-10-09 | Low-stress power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202258513U true CN202258513U (en) | 2012-05-30 |
Family
ID=46119721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203802190U Expired - Lifetime CN202258513U (en) | 2011-10-09 | 2011-10-09 | Low-stress power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202258513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571192A (en) * | 2016-11-11 | 2017-04-19 | 惠州市金龙羽电缆实业发展有限公司 | Conductor preformation fireproof type cable and preparation method thereof |
-
2011
- 2011-10-09 CN CN2011203802190U patent/CN202258513U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571192A (en) * | 2016-11-11 | 2017-04-19 | 惠州市金龙羽电缆实业发展有限公司 | Conductor preformation fireproof type cable and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214242 No. 999, Dong Feng Dong Road, West Industrial Park, Yixing, Jiangsu Patentee after: JIANGSU ZHONGCHAO HOLDING CO., LTD. Address before: 214242 No. 999, Dong Feng Dong Road, West Industrial Park, Yixing, Jiangsu Patentee before: Jiangsu Zhongchao Cable Corporation |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |