CN104517669A - Cable capable of resisting strain cracking - Google Patents
Cable capable of resisting strain cracking Download PDFInfo
- Publication number
- CN104517669A CN104517669A CN201410826212.5A CN201410826212A CN104517669A CN 104517669 A CN104517669 A CN 104517669A CN 201410826212 A CN201410826212 A CN 201410826212A CN 104517669 A CN104517669 A CN 104517669A
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- cable
- overcoat
- bed course
- strain cracking
- insulating barrier
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Abstract
The invention belongs to the field of cables and particularly relates to a cable capable of resisting strain cracking. The cable capable of resisting strain cracking at least comprises four core wires, wherein an insulating layer is arranged on the outer wall of each core wire. The cable is characterized in that the core wires are arranged in a polygonal form; the outer surfaces of the insulating layers are wrapped with connected protection layers; a ventilation cavity is formed in the centers of the protection layers. The structure of the cable is improved. According to the designed cable, the internal stress generated by cold-hot change can be overcome, the stress is released in time, breakage of the protection layers outside the cable is effectively prevented, the service life of the cable is prolonged, and the risk of an electricity safety accident is reduced.
Description
Technical field
The invention belongs to field of cables, particularly a kind of cable of anti-strain cracking.
Background technology
Along with the development of economic society, the use of cable in industry-by-industry is more and more extensive, general cable is all mounted in pipeline or exposed to air, cable is after the change of the change and illumination that are subject to the long cold and hot temperature difference, there is the phenomenon of expanding with heat and contract with cold in cable inside, there is stress in cable inside, because existing cable is as a whole, there is not the space of Stress Release in cable inside, the protective layer of Exterior cable is easily caused to break, there is the problem that heart yearn is exposed, affect the normal use of cable, also the requirement of user cannot be met the useful life of cable.
Summary of the invention
The present invention is directed to prior art Problems existing; the structure of the present invention to cable is improved; devise and a kind ofly can overcome the internal stress produced because of cold and hot change; discharge stress timely; effectively prevent breaking of the protective layer of Exterior cable; extend the useful life of cable, reduce the risk that Electrical Safety accident occurs.
The present invention is achieved through the following technical solutions:
Anti-strain cracking cable, described cable at least comprises 4 heart yearns, and the outer wall of described heart yearn is provided with insulating barrier, it is characterized in that: described heart yearn is that polygon is arranged, and the outside of insulating barrier is all coated with connected overcoat, the center of described overcoat is formed with vented cavity.
The present invention is by improving the arrangement of heart yearn and the structure of overcoat, the layout of heart yearn makes the overcoat be connected between heart yearn define a unstable multi-connecting-rod mechanism, because multi-connecting-rod mechanism can carry out distortion along with the stress produced due to cold and hot change and illumination variation, stress obtains release by the change of overcoat, stress suffered by cable itself declines more compared with normal cable, decrease the risk of cable cracking, extend the useful life of cable, the vented cavity arranged in addition, the heat that the cable that can leave in time produces, reduce cable owing to sending out distortion thermogenetic, thus prevent cable strain from ftractureing further.
Further, the outer wall of described insulating barrier is enclosed with bed course, bed course is coated with the screen reducing electromagnetic interference, and the screen of setting can shield outside interference signal, ensures the accuracy of cable transmission of signal.
Further; be provided with the second bed course of interval and protective effect between described screen and overcoat, because screen is metal level, sharp position may have been there is; the second bed course arranged, for reducing the impact of screen on overcoat, plays a protective role.
Further, the material of described insulating barrier is the wherein one in the macromolecular material such as PVC, XLPE or silicon rubber.
Further, the material of described bed course is the one in the materials such as polyester, PP or nonwoven fabrics.
Further, described overcoat is the one in the macromolecular materials such as PVC, polyurethane or silicon rubber.
In sum, the present invention has following beneficial effect:
The present invention is by improving the arrangement of heart yearn and the structure of overcoat, the layout of heart yearn makes the overcoat be connected between heart yearn define a unstable multi-connecting-rod mechanism, because multi-connecting-rod mechanism can carry out distortion along with the stress produced due to cold and hot change and illumination variation, stress obtains release by the change of overcoat, stress suffered by cable itself declines more compared with normal cable, decrease the risk of cable cracking, extend the useful life of cable, the vented cavity arranged in addition, the heat that the cable that can leave in time produces, reduce cable owing to sending out distortion thermogenetic, thus prevent cable strain from ftractureing further.
Accompanying drawing explanation
Fig. 1 is the structural representation of execution mode one;
Fig. 2 is the rough schematic view of execution mode one;
Fig. 3 is the stress of AB section and the distribution schematic diagram of strain of execution mode one, and stress σ represents, strain Δ l represents;
Fig. 4 is the stress of AC section and the distribution schematic diagram of strain of execution mode one; Stress σ represents, strain Δ l represents;
Fig. 5 is the structural representation of execution mode two;
Fig. 6 is the structural representation of execution mode three;
In figure, 1 is heart yearn, and 2 is insulating barrier, and 3 is bed course, and 4 is screen, and 5 is the second bed course, and 6 is overcoat, and 7 is vented cavity.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
Execution mode one
Anti-strain cracking cable as shown in Figure 1, described cable at least comprises 4 heart yearns 1, in present embodiment, heart yearn is 4, the outer wall of described heart yearn is provided with insulating barrier 2, it is characterized in that: described heart yearn 1 is arranged in polygon, and the outside of insulating barrier 2 is all coated with connected overcoat 6, the center of described overcoat 6 is formed with vented cavity 7.
The outer wall of described insulating barrier 2 is enclosed with bed course 3, bed course 3 is coated with the screen 4 reducing electromagnetic interference, and the screen of setting can shield outside interference signal, ensures the accuracy of cable transmission of signal.
Further; be provided with the second bed course 5 of interval and protective effect between described screen 4 and overcoat 6, because screen is metal level, sharp position may have been there is; the second bed course arranged, for reducing the impact of screen on overcoat, plays a protective role.
The material of the insulating barrier 2 described in present embodiment is PVC, and the material of described bed course 3,5 is polyester, and described overcoat 6 is PVC.
Rough schematic view as shown in Figure 2, and mark is numbered to each heart yearn, when cable laying, top is subject to strong illumination, and the stress and strain that cable inside produces is as the Stress distribution schematic diagram of the AB section of Fig. 3 and the AC section of Fig. 4; AC bar and BD bar outwards stretch with arc around C, D fulcrum because top is heated simultaneously, and cable now can Free Transform thus material internal can not produce extra stress, and cable material also would not produce fatigue damage.Upon a drop in temperature, AB bar is just in time contrary with the stress suffered by AC bar, catches a cold and AC bar and BD bar are inwardly shortened with arc around C, D fulcrum in cable top, thus cable material inside can not produce extra stress, the safe handling of protection cable.When this whole cable is heated or temperature decline, four bar structures in reduced graph can outwards stretch simultaneously or inwardly bounce back, and make can not produce extra stress in cable material, thus protect cable injury-free or aging.The design of this special construction can protect cable to avoid illumination or the aging or cracking brought that expands with heat and contract with cold just.
Execution mode two
Anti-strain cracking cable, described cable at least comprises 4 heart yearns 1, be 5 heart yearns in present embodiment, the outer wall of described heart yearn 1 is provided with insulating barrier 2, described heart yearn 1 is arranged in polygon, and the outside of insulating barrier 2 is all coated with connected overcoat 6, the center of described overcoat 6 is formed with vented cavity 7.
The outer wall of described insulating barrier 2 is enclosed with bed course 3, bed course 3 is coated with the screen 4 reducing electromagnetic interference, and the screen 4 of setting can shield outside interference signal, ensures the accuracy of cable transmission of signal.
Be provided with the second bed course 5 of interval and protective effect between described screen 4 and overcoat 6, because screen is metal level, may have there is sharp position, the second bed course of setting, for reducing the impact of screen on overcoat, plays a protective role.
The material of described insulating barrier 2 is XLPE, and the material of described bed course 3,5 is PP, and described overcoat 6 is polyurethane.
Execution mode three
Anti-strain cracking cable, described cable at least comprises 4 heart yearns 1, be 6 heart yearns in present embodiment, the outer wall of described heart yearn 1 is provided with insulating barrier 2, it is characterized in that: described heart yearn 1 is arranged in polygon, and the outside of insulating barrier 2 is all coated with connected overcoat 6, the center of described overcoat 6 is formed with vented cavity 7.
Further, the outer wall of described insulating barrier 2 is enclosed with bed course 3, bed course 3 is coated with the screen 4 reducing electromagnetic interference, and the screen of setting can shield outside interference signal, ensures the accuracy of cable transmission of signal.
Further; be provided with the second bed course 5 of interval and protective effect between described screen 4 and overcoat 6, because screen is metal level, sharp position may have been there is; the second bed course arranged, for reducing the impact of screen on overcoat, plays a protective role.
The material of described insulating barrier is silicon rubber, and the material of described bed course is nonwoven fabrics, and described overcoat is silicon rubber.
In sum, the present invention has following beneficial effect:
The present invention is by improving the arrangement of heart yearn and the structure of overcoat, the layout of heart yearn makes the overcoat be connected between heart yearn define a unstable multi-connecting-rod mechanism, because multi-connecting-rod mechanism can carry out distortion along with the stress produced due to cold and hot change and illumination variation, stress obtains release by the change of overcoat, stress suffered by cable itself declines more compared with normal cable, decrease the risk of cable cracking, extend the useful life of cable, the vented cavity arranged in addition, the heat that the cable that can leave in time produces, reduce cable owing to sending out distortion thermogenetic, thus prevent cable strain from ftractureing further.
Claims (6)
1. anti-strain cracking cable, described cable at least comprises 4 heart yearns, and the outer wall of described heart yearn is provided with insulating barrier, it is characterized in that: described heart yearn is that polygon is arranged, and the outside of insulating barrier is all coated with connected overcoat, the center of described overcoat is formed with vented cavity.
2. anti-strain cracking cable according to claim 1, is characterized in that: the outer wall of described insulating barrier is enclosed with bed course, bed course is coated with the screen reducing electromagnetic interference.
3. anti-strain cracking cable according to claim 2, is characterized in that: the second bed course being provided with interval and protective effect between described screen and overcoat.
4. anti-strain cracking cable according to claim 1, is characterized in that: the material of described insulating barrier is the wherein one in the macromolecular material such as PVC, XLPE or silicon rubber.
5. anti-strain cracking cable according to claim 1, is characterized in that: the material of described bed course is the one in the materials such as polyester, PP or nonwoven fabrics.
6. anti-strain cracking cable according to claim 1, is characterized in that: described overcoat is the wherein one in the macromolecular materials such as PVC, polyurethane or silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826212.5A CN104517669A (en) | 2014-12-25 | 2014-12-25 | Cable capable of resisting strain cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410826212.5A CN104517669A (en) | 2014-12-25 | 2014-12-25 | Cable capable of resisting strain cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104517669A true CN104517669A (en) | 2015-04-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410826212.5A Pending CN104517669A (en) | 2014-12-25 | 2014-12-25 | Cable capable of resisting strain cracking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104517669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575765A (en) * | 2014-12-26 | 2015-04-29 | 江苏昌盛电缆集团有限公司 | Cable with internal stress cracking resistance function |
-
2014
- 2014-12-25 CN CN201410826212.5A patent/CN104517669A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575765A (en) * | 2014-12-26 | 2015-04-29 | 江苏昌盛电缆集团有限公司 | Cable with internal stress cracking resistance function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150415 |
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| WD01 | Invention patent application deemed withdrawn after publication |