CN102930935A - 35 kV aerial insulated cable with high strength and ice coating resistance - Google Patents
35 kV aerial insulated cable with high strength and ice coating resistance Download PDFInfo
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- CN102930935A CN102930935A CN2012104422130A CN201210442213A CN102930935A CN 102930935 A CN102930935 A CN 102930935A CN 2012104422130 A CN2012104422130 A CN 2012104422130A CN 201210442213 A CN201210442213 A CN 201210442213A CN 102930935 A CN102930935 A CN 102930935A
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Abstract
The invention discloses a 35 kV aerial insulated cable with high strength and ice coating resistance. The cable comprises a conductor in the center of the cable. A semi-conductive inner shielding layer, an inner insulating layer and an insulating layer are extruded successively in a three-layer co-extrusion mode outside the conductor. The cable is applicable to power transmission on aerial lines with alternating voltages of 35 kV or below. The 35 kV aerial insulated cable with high strength and ice coating resistance not only has outstanding electrical properties, mechanical properties, heat aging resistance, environment resistance and chemical resistance, but also is simple in structure and low in weight, and has good anti-icing and deicing properties. Icing resisting and deicing can be performed on the cable surface in conditions of ice and snow days, and the safe operation of power transmission is guaranteed.
Description
Technical field
The present invention relates to the electric wire field, specifically refer 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.
Summary of the invention
The objective of the invention is 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 of the present invention 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, described semiconductive internal shield adopts chemical crosslinking type, thermosetting semiconductive material, and its thickness is 0.8mm.
Further, preferably, described inner insulating layer adopts 35kV level chemical crosslinking high insulating property overhead insulating material, and its thickness is 6.5mm.
Further, preferably, described external insulation layer adopts hydrophobic weatherability high density PE material, and its thickness is 2.0mm.
Beneficial effect of the present invention is:
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 invention.
Embodiment:
As shown in Figure 1, the ice-covering-proof aerial insulated cable of a kind of 35kV high strength of the present invention, 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 invention 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 invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement, these improvement also should be considered as protection scope of the present invention.
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 is characterized in that: described semiconductive internal shield (2) adopts chemical crosslinking type, thermosetting semiconductive material, and its thickness is 0.8mm.
4. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1 is characterized in that: described inner insulating layer (3) adopts 35kV level chemical crosslinking high insulating property overhead insulating material, and its thickness is 6.5mm.
5. the ice-covering-proof aerial insulated cable of 35kV high strength according to claim 1 is characterized in that: described external insulation layer (4) adopts hydrophobic weatherability high density PE material, and its thickness is 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104422130A CN102930935A (en) | 2012-11-08 | 2012-11-08 | 35 kV aerial insulated cable with high strength and ice coating resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104422130A CN102930935A (en) | 2012-11-08 | 2012-11-08 | 35 kV aerial insulated cable with high strength and ice coating resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102930935A true CN102930935A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104422130A Pending CN102930935A (en) | 2012-11-08 | 2012-11-08 | 35 kV aerial insulated cable with high strength and ice coating resistance |
Country Status (1)
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| CN (1) | CN102930935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390189A (en) * | 2015-12-04 | 2016-03-09 | 国网河南邓州市供电公司 | Anti-icing cable |
| CN111696716A (en) * | 2020-06-19 | 2020-09-22 | 安徽渡江电缆集团有限公司 | New forms of energy flame retarded cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2549636A1 (en) * | 1983-07-20 | 1985-01-25 | Fical Fils Cables Acier Lens | Cable with non-circular cross section, in particular electrical cable. |
| CN2641771Y (en) * | 2003-06-10 | 2004-09-15 | 宝胜科技创新股份有限公司 | Wearing-resistant overhead insulation cable |
| CN201256020Y (en) * | 2008-09-04 | 2009-06-10 | 广东省广州番禺电缆厂有限公司 | Corrosion proof power cable |
| CN201278274Y (en) * | 2008-07-22 | 2009-07-22 | 芜湖明远电线电缆有限责任公司 | Abrasion resistant overhead electric cable |
| CN201408590Y (en) * | 2009-05-09 | 2010-02-17 | 江苏中超电缆股份有限公司 | Overhead insulated cable |
| CN202917241U (en) * | 2012-11-08 | 2013-05-01 | 江苏新远程电缆股份有限公司 | 35kV high strength anti-icing overhead insulation cable |
-
2012
- 2012-11-08 CN CN2012104422130A patent/CN102930935A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2549636A1 (en) * | 1983-07-20 | 1985-01-25 | Fical Fils Cables Acier Lens | Cable with non-circular cross section, in particular electrical cable. |
| CN2641771Y (en) * | 2003-06-10 | 2004-09-15 | 宝胜科技创新股份有限公司 | Wearing-resistant overhead insulation cable |
| CN201278274Y (en) * | 2008-07-22 | 2009-07-22 | 芜湖明远电线电缆有限责任公司 | Abrasion resistant overhead electric cable |
| CN201256020Y (en) * | 2008-09-04 | 2009-06-10 | 广东省广州番禺电缆厂有限公司 | Corrosion proof power cable |
| CN201408590Y (en) * | 2009-05-09 | 2010-02-17 | 江苏中超电缆股份有限公司 | Overhead insulated cable |
| CN202917241U (en) * | 2012-11-08 | 2013-05-01 | 江苏新远程电缆股份有限公司 | 35kV high strength anti-icing overhead insulation cable |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390189A (en) * | 2015-12-04 | 2016-03-09 | 国网河南邓州市供电公司 | Anti-icing cable |
| CN105390189B (en) * | 2015-12-04 | 2017-03-29 | 国网河南邓州市供电公司 | A kind of ice-covering-proof cable |
| CN111696716A (en) * | 2020-06-19 | 2020-09-22 | 安徽渡江电缆集团有限公司 | New forms of energy flame retarded cable |
| CN111696716B (en) * | 2020-06-19 | 2021-10-08 | 安徽渡江电缆集团有限公司 | New forms of energy flame retarded cable |
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Application publication date: 20130213 |