CN205140538U - Protection against rodents termite resistance high tension cable - Google Patents
Protection against rodents termite resistance high tension cable Download PDFInfo
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- CN205140538U CN205140538U CN201520938177.6U CN201520938177U CN205140538U CN 205140538 U CN205140538 U CN 205140538U CN 201520938177 U CN201520938177 U CN 201520938177U CN 205140538 U CN205140538 U CN 205140538U
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- against rodents
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Abstract
The utility model discloses a protection against rodents termite resistance high tension cable, including the conductor sinle silk and by interior outside to in proper order the cladding be in semiconduction on the conductor line core outside surface block water buffer layer, metallic sheath layer, oversheath layer and protection against rodents termite resistance semi -conductive layer, wherein, the conductor sinle silk include the conductor and by interior outside to in proper order the cladding be in conductor shield, insulating layer and insulation screen on the conductor surface. Through the optimal design to the high tension cable structure for the external diameter and the thickness of whole cable are unlikely to too big, and still possess certain protection against rodents termite resistance performance outside satisfying high tension cable's standard code, can guarantee that cable jacket has good mechanical properties and electric property simultaneously, are applicable to and exchange rated voltage 3866kV, 64110kV and 127220kV, can use in a large number in electric wire netting, high -tension transmission system etc..
Description
Technical field
The utility model relates to the technical field of cable, more particularly, relates to a kind of crosslinked polyetylene insulated and can the termite-proof high-tension cable of protection against rodents.
Background technology
Along with the continuous transformation of expanding economy and electrical network, transmission voltage grade is also improving constantly.At present, the transmission system of China is substantially all born by high-tension cable.High-tension cable is buried-pipe laying mainly, and therefore mouse and termite can cause serious potential safety hazard to high-tension cable.
In order to solve this problem, cable producer can adopt the oversheath of protection against rodents termite-proof jacketed cable material electrogenesis in next life cable substantially, to reach this requirement.But still there is following shortcoming in the method:
1) high-tension cable external diameter is large and oversheath thickness large, needs to use a large amount of sheath material when extruding.And protection against rodents termite-proof protective cover material price is higher, the manufacturing cost of cable greatly can be improved.
2) sheath of hv cable material is to mechanical performance or electrical performance demands is all higher, but adds a large amount of additive to meet the termite-proof performance need of cable material protection against rodents, and this can reduce mechanical performance and the electric property of cable sheath material.
Utility model content
For above-mentioned problems of the prior art and deficiency, the purpose of this utility model is that providing a kind of specifies also possess the termite-proof performance of certain protection against rodents outward satisfied to the standard of high-tension cable, can ensure that cable jacket has the termite-proof high-tension cable of protection against rodents of excellent mechanical performance and electric property simultaneously.
To achieve these goals, the utility model provides the termite-proof high-tension cable of a kind of protection against rodents, the termite-proof high-tension cable of described protection against rodents comprises conductor thread core and is coated on semiconductive water-blocking buffer layer, metal sheath layer, external sheath layer and the termite-proof semi-conductive layer of protection against rodents on described conductor thread core outer surface from inside to outside successively, wherein, the described conductor thread core conductor shield, insulating barrier and the insulation screen that comprise conductor and be coated on successively from inside to outside on described conductor outside surfaces.
According to an embodiment of the termite-proof high-tension cable of protection against rodents of the present utility model, to be high purity oxygen free copper press the copper conductor made through two classes are stranded to described conductor.
According to an embodiment of the termite-proof high-tension cable of protection against rodents of the present utility model, described insulating barrier is crosslinked polyetylene insulated layer.
According to an embodiment of the termite-proof high-tension cable of protection against rodents of the present utility model, described semiconductive water-blocking buffer layer is wrapped semiconductive water-blocking buffer layer.
According to an embodiment of the termite-proof high-tension cable of protection against rodents of the present utility model, described metal sheath layer is argon arc welding corrugated aluminium sheath layer.
According to an embodiment of the termite-proof high-tension cable of protection against rodents of the present utility model, described external sheath layer is thermoplastic macromolecule material external sheath layer.
Compared with prior art, the termite-proof high-tension cable of protection against rodents of the present utility model has the following advantages:
1) sheath of the utility model high-tension cable adopts conventional protective cover material, and the termite-proof semi-conductive layer consumption of protection against rodents is little, greatly reduces the manufacturing cost of high-tension cable.Further, the jacket material of high-tension cable does not add the additive of the termite-proof class of protection against rodents, and the mechanical performance of oversheath and electric property do not have significantly sacrificing.
2) by the optimal design to High-voltage cable structure, the external diameter of Integral cable and thickness is made to be unlikely to too large, and satisfied, the standard of high-tension cable is specified also possess the termite-proof performance of certain protection against rodents outward, can ensure that cable jacket has excellent mechanical performance and electric property simultaneously, be applicable to ac rated voltage 38/66kV, 64/110kV and 127/220kV, can be used in electrical network, high voltage power transmisson system etc. in a large number.
Accompanying drawing explanation
Fig. 1 shows the structural representation according to the termite-proof high-tension cable of the protection against rodents of the utility model exemplary embodiment.
Description of reference numerals:
1-conductor, 2-conductor shield, 3-insulating barrier, 4-insulation screen;
5-semi-conductive buffer water blocking layer, 6-metal sheath layer, 7-external sheath layer, the termite-proof semi-conductive layer of 8-protection against rodents.
Embodiment
Hereinafter, the termite-proof high-tension cable of protection against rodents of the present utility model will be described with reference to the accompanying drawings.
Fig. 1 shows the structural representation according to the termite-proof high-tension cable of the protection against rodents of the utility model exemplary embodiment.
As shown in Figure 1, according to exemplary embodiment of the present utility model, the termite-proof high-tension cable of described protection against rodents comprises conductor thread core and is coated on semiconductive water-blocking buffer layer 5, metal sheath layer 6, external sheath layer 7 and the termite-proof semi-conductive layer 8 of protection against rodents on conductor thread core outer surface from inside to outside successively, wherein, conductor thread core comprises conductor 1 and is coated on conductor shield 2, insulating barrier 3 and the insulation screen 4 on conductor 1 outer surface from inside to outside successively.
Particularly, conductor thread core is one, can directly extrude successively from inside to outside on conductor 1 or co-extrusion conductor shield 2, insulating barrier 3 and insulation screen 4 to form conductor thread core.
According to the utility model, conductor 1 is preferably high purity oxygen free copper through two classes are stranded and presses the copper conductor made, but the utility model is not limited thereto.
Wherein, conductor shield 2 is directly coated on conductor 1, conductor 1 equipotential of itself and conductively-closed and with insulating barrier 3 good contact, thus avoid, between conductor 1 and insulating barrier 2, partial discharge occurs.Further, arrange conductor shield 2 not only can by cable electric current produce electromagnetic-field-shielded in cable, certain ground protection effect can also be played, play the effect of safeguard protection.Conductor shield 2 can be cross-linking type conductor shield.
The effect of insulating barrier 3 is that the live part of cable and external environment are insulated, and also plays protection cable not by the extraneous effect damaged simultaneously.According to the utility model, insulating barrier 3 is preferably ultra-clean high-voltage cross-linking polythene insulating barrier.
Insulation screen 4 and conductor shield 2 are all in order to improve the Electric Field Distribution of cable.Add one deck insulation screen 4 on the surface of insulating barrier 3, play on the one hand the effect of protection insulated wire cores, on the other hand it and insulating barrier 3 good contact form equipotential at insulating surface, effectively can avoid the partial discharge occurred between insulating barrier and restrictive coating.According to the utility model, the semiconductive shielding layer that insulation screen 4 can be formed for the very low and semiconductive material of thinner thickness by resistivity.
Be coated on the sheath that in fact the semiconductive water-blocking buffer layer 5 on conductor thread core outer surface, metal sheath layer 6, external sheath layer 7 and semi-conductive layer 8 form high-tension cable from inside to outside successively.
Wherein, the resistance of semiconductive water-blocking buffer layer 5 is little and have semiconducting character, effectively can cushion, weaken electric field strength, and have the effect blocked water.According to the utility model, semiconductive water-blocking buffer layer 5 is wrapped semiconductive water-blocking buffer layer.
Metal sheath layer 6 can play waterproof and the effect such as zero sequence short circuit current is thermally-stabilised.According to the utility model, metal sheath layer 6 is preferably argon arc welding corrugated aluminium sheath layer.
The effect of external sheath layer 7 is that conductor thread core can not be contacted with water, air or other materials, prevents humidified insulation and protects conductor thread core not by mechanical wounding.According to the utility model, external sheath layer is thermoplastic macromolecule material external sheath layer, such as pe sheath.
Semi-conductive layer plays the effect of balanced electric field, because a lot of kicks can be formed at conductive surface after conductor strand system, the electric field in projection place can be local far above other, so coated one deck semi-conductive layer carrys out homogenizing electric field, simultaneously in order to make high-tension cable play the termite-proof effect of protection against rodents, the utility model adds the termite-proof semi-conductive layer 8 of protection against rodents, and preferably, the termite-proof semi-conductive layer of described protection against rodents is the termite-proof semi-conductive layer of thermoplasticity protection against rodents.
The sheath of the utility model high-tension cable adopts conventional protective cover material, and the material usage of the termite-proof semi-conductive layer of protection against rodents is little, greatly reduces the manufacturing cost of high-tension cable.Further, the sheath material of high-tension cable does not add the additive of the termite-proof class of protection against rodents, and the mechanical performance of sheath and electric property do not have significantly sacrificing.By the structure adjusting of above-mentioned conductor thread core and jacket structure and material, namely achieve the effect of the termite-proof class of protection against rodents, also optimize the construction of cable and mechanical performance and electric property, also reduce cost.
Although describe the termite-proof high-tension cable of protection against rodents of the present utility model in conjunction with exemplary embodiment above, but those of ordinary skill in the art should be clear, when not departing from the spirit and scope of claim, various modifications and variations can be carried out to above-described embodiment.
Claims (6)
1. the termite-proof high-tension cable of protection against rodents, it is characterized in that, the termite-proof high-tension cable of described protection against rodents comprises conductor thread core and is coated on semiconductive water-blocking buffer layer, metal sheath layer, external sheath layer and the termite-proof semi-conductive layer of protection against rodents on described conductor thread core outer surface from inside to outside successively, wherein, the described conductor thread core conductor shield, insulating barrier and the insulation screen that comprise conductor and be coated on successively from inside to outside on described conductor outside surfaces.
2. the termite-proof high-tension cable of protection against rodents according to claim 1, is characterized in that, to be high purity oxygen free copper press the copper conductor made through two classes are stranded to described conductor.
3. the termite-proof high-tension cable of protection against rodents according to claim 1, is characterized in that, described insulating barrier is crosslinked polyetylene insulated layer.
4. the termite-proof high-tension cable of protection against rodents according to claim 1, is characterized in that, described semiconductive water-blocking buffer layer is wrapped semiconductive water-blocking buffer layer.
5. the termite-proof high-tension cable of protection against rodents according to claim 1, is characterized in that, described metal sheath layer is argon arc welding corrugated aluminium sheath layer.
6. the termite-proof high-tension cable of protection against rodents according to claim 1, is characterized in that, described external sheath layer is thermoplastic macromolecule material external sheath layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938177.6U CN205140538U (en) | 2015-11-23 | 2015-11-23 | Protection against rodents termite resistance high tension cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520938177.6U CN205140538U (en) | 2015-11-23 | 2015-11-23 | Protection against rodents termite resistance high tension cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205140538U true CN205140538U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520938177.6U Active CN205140538U (en) | 2015-11-23 | 2015-11-23 | Protection against rodents termite resistance high tension cable |
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| Country | Link |
|---|---|
| CN (1) | CN205140538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524927A (en) * | 2019-01-07 | 2019-03-26 | 浙江朗曼通信技术有限公司 | Cable protective sleeve and cable |
| CN111180117A (en) * | 2020-02-15 | 2020-05-19 | 国网天津市电力公司 | Intelligent security high pressure single core cable |
-
2015
- 2015-11-23 CN CN201520938177.6U patent/CN205140538U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524927A (en) * | 2019-01-07 | 2019-03-26 | 浙江朗曼通信技术有限公司 | Cable protective sleeve and cable |
| CN111180117A (en) * | 2020-02-15 | 2020-05-19 | 国网天津市电力公司 | Intelligent security high pressure single core cable |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 614001 18 Yingbin Avenue, hi tech Zone, Leshan, Sichuan Patentee after: Shang Wei Limited by Share Ltd Address before: 614001 18 Yingbin Avenue, hi tech Zone, Leshan, Sichuan Patentee before: Sichuan Mingxing Cable Co., Ltd. |