CN202917241U - 35kV high strength anti-icing overhead insulation cable - Google Patents
35kV high strength anti-icing overhead insulation cable Download PDFInfo
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- CN202917241U CN202917241U CN 201220584541 CN201220584541U CN202917241U CN 202917241 U CN202917241 U CN 202917241U CN 201220584541 CN201220584541 CN 201220584541 CN 201220584541 U CN201220584541 U CN 201220584541U CN 202917241 U CN202917241 U CN 202917241U
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Abstract
The utility model discloses a 35kV high strength anti-icing overhead insulation cable. The insulation cable comprises a conductor in the center of the cable, and a semi-conductive inner shielding layer, an inner insulation layer and an outer insulation layer which are sequentially extruded on the outer part of the conductor in the three-layer co-extrusion way. The cable is suitable for transmit the power on the overhead lines with AC voltage of 35kV and below 35kV. The 35kV high strength anti-icing overhead insulation cable not only is excellent in electrical performance, mechanical performance, heat aging resistance performance, environment resistance performance and medical corrosion resistance performance, but also has is simple in structure, light in weight, and good in anti-icing and de-icing performance. In ice and snow days, the cable can realize the anti-icing and de-icing function on the surface of the cable and guarantee the safe operation of the transmission.
Description
Technical field
The utility model relates to the electric wire field, specifically refers to the ice-covering-proof aerial insulated cable of a kind of 35kV high strength.
Background technology
Existing electric power overhead insulated cable is made of conductor and insulating barrier mostly, is used for the electric power long-distance transmissions.The aerial insulated cable of this structure under the weather condition without ice rain, wind and snow, can both satisfy the requirement of safety power transmission.But in actual motion, this aerial insulated cable is in the situation that meet with strong snowfall, sleet weather, cable surface can form hangs frost, icing and icicle, even form than thickness ice cover on aerial insulated cable surface, strengthened the own wt of aerial insulated cable, caused broken string or shaft tower to fracture, circuit interrupts, make troubles to people's lives, also bring about great losses to country.Therefore, under ice and snow, sleet weather condition, in time to aerial insulated cable defrost, deicing, prevent that its surface from freezing, and just seems particularly important.
At present, the problem such as, large span ice-covering-proof for solving has proposed a lot of schemes in the industry, and all unsatisfactory, main cause is the uncertainty of natural calamity, and the equilibrium problem of input and risk, mainly contains at present following several method:
Be coated with hydrophobic material: according to the experience of electric power maintenance department, apply the hydrophobic material of the character such as a kind of similar organosilicon, fluorinated silicone modified acrylate at cable surface.This method cable body does not possess hydrophobic property, and later stage protected working amount is large, and is difficult for lastingly;
Heat conduction deicing: adopt the modes such as extruction conductive layer thermosphere, one of the stranded increase of three-phase or winding resistance wire, high heat conduction nonmetallic materials or metal material are equipped with in the line, expectation slows down by heat energy or eliminates ice and snow to be affected, but this type of mode has increased considerably again the circuit own wt undoubtedly, just in development, can't drop into actual use at present;
Strengthening core: adopt carbon fiber to strengthen body as strengthening core, extrude heat insulation inductive layer, can increase the cable cross distance on the one hand, on the one hand when needed, can increase the modes such as local current by applying reactive power, produce high temperature and eliminate ice and snow, this type of mode also applies to overhead bare conductor, but high temperature must be to cable insulation injury and accelerated ageing;
The external force deicing: after the power failure, partial short-circuit melts ice and snow, uses artificial deicing.
In sum: 35kV aerial insulated cable structure exists following obviously not enough at present:
1, insulating layer thickness, cable are from great, and the overhead transmission line span is little, and the infrastructure investments such as connection, tension force, fixing, steel tower are large;
2, under moist filthy environment, because electric field action, the surface is easily creepage, plays the trace electric current in the easy carbonization of insulating surface;
3, at severe cold area, insulating barrier is easy to crack, and the easy icing of ice and snow weather in the area of especially severe, can cause broken string and the accident of falling the tower.
The utility model content
The purpose of this utility model be for solve present 35kV aerial insulated cable from great, the circuit span is little, infrastructure investment is large, easily carbonization of surface, the problems such as, ice and snow weather easy icing easy to crack at the severe cold area insulating barrier provide a kind of 35kV high strength ice-covering-proof aerial insulated cable.
The ice-covering-proof aerial insulated cable of a kind of 35kV high strength described in the utility model comprises the conductor of cable center, adopts three-layer co-extruded mode to extrude successively semiconductive internal shield, inner insulating layer and external insulation layer outside conductor.
Further, preferably, described conductor is closed by the high-strength aluminum alloy skein silk and forms.
Further, preferably, the thickness of described semiconductive internal shield is 0.8mm.
Further, preferably, the thickness of described inner insulating layer is 6.5mm.
Further, preferably, the thickness of described external insulation layer is 2.0mm.
The beneficial effects of the utility model are:
1, large span: cable conductor adopts high-strength aluminum alloy, and whole pull-off force improves 20%;
2, from heavy and light: aluminium alloy conductor reduces external diameter by highly pressing, and total insulation is compared with common aerial cable, and under the prerequisite that does not reduce insulation property, attenuate 10% has alleviated the cable deadweight;
3, weatherability: have the aging function of low temperature resistant cracking, antiultraviolet;
4, ice-covering-proof: the external insulation hydrophobicity is good, freezes easily to come off, and effectively prevents icing;
5, solve the tension force fixation problem: external insulation tension force constant intensity is high, and the discharge of decrease tension force bearing and insulation such as pull at the problem.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment:
As shown in Figure 1, the ice-covering-proof aerial insulated cable of a kind of 35kV high strength described in the utility model, what comprise cable center closes the conductor 1 that forms by the high-strength aluminum alloy skein silk, and extruding successively thickness in the three-layer co-extruded mode of conductor 1 outer employing is that to adopt chemical crosslinking type, the semiconductive internal shield 2 of thermosetting semiconductive material, thickness be that to adopt inner insulating layer 3 and the thickness of 35kV level chemical crosslinking high insulating property overhead insulating material be the external insulation layer 4 that 2.0mm adopts hydrophobic weatherability high density PE material to 6.5mm to 0.8mm.
The utility model provides the ice-covering-proof aerial insulated cable version of a kind of 35kV high strength and implementation method; the above only is preferred implementation method of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (5)
1. ice-covering-proof aerial insulated cable of 35kV high strength, it is characterized in that: comprise the conductor (1) of cable center, outside conductor (1), adopt three-layer co-extruded mode to extrude successively semiconductive internal shield (2), inner insulating layer (3) and external insulation layer (4).
2. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1, it is characterized in that: described conductor (1) is closed by the high-strength aluminum alloy skein silk and forms.
3. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1, it is characterized in that: the thickness of described semiconductive internal shield (2) is 0.8mm.
4. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1, it is characterized in that: the thickness of described inner insulating layer (3) is 6.5mm.
5. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1, it is characterized in that: the thickness of described external insulation layer (4) is 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584541 CN202917241U (en) | 2012-11-08 | 2012-11-08 | 35kV high strength anti-icing overhead insulation cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584541 CN202917241U (en) | 2012-11-08 | 2012-11-08 | 35kV high strength anti-icing overhead insulation cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917241U true CN202917241U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220584541 Expired - Lifetime CN202917241U (en) | 2012-11-08 | 2012-11-08 | 35kV high strength anti-icing overhead insulation cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202917241U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930935A (en) * | 2012-11-08 | 2013-02-13 | 江苏新远程电缆股份有限公司 | 35 kV aerial insulated cable with high strength and ice coating resistance |
-
2012
- 2012-11-08 CN CN 201220584541 patent/CN202917241U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930935A (en) * | 2012-11-08 | 2013-02-13 | 江苏新远程电缆股份有限公司 | 35 kV aerial insulated cable with high strength and ice coating resistance |
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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: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee after: JIANGSU YUANCHENG CABLE CO.,LTD. Address before: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee before: JIANGSU NEW REMOTE CABLE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee after: RUIKANG WENYUAN CABLE CO.,LTD. Address before: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee before: JIANGSU YUANCHENG CABLE CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
|
| CX01 | Expiry of patent term |