CN103295693A - Lightening-breakage-preventing medium-voltage insulating wire - Google Patents
Lightening-breakage-preventing medium-voltage insulating wire Download PDFInfo
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- CN103295693A CN103295693A CN2013102050960A CN201310205096A CN103295693A CN 103295693 A CN103295693 A CN 103295693A CN 2013102050960 A CN2013102050960 A CN 2013102050960A CN 201310205096 A CN201310205096 A CN 201310205096A CN 103295693 A CN103295693 A CN 103295693A
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- aluminum
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- lightening
- breakage
- voltage insulating
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Abstract
The invention discloses a lightening-breakage-preventing medium-voltage insulating wire which comprises a steel core formed by stranded steel wires. An aluminum wire layer is wrapped outside the steel core. Aluminum chloride or ammonium chloride is coated on the surface of the aluminum wire layer. An insulating layer is wrapped outside the aluminum wire layer. The lightening-breakage-preventing medium-voltage insulating wire is reasonable in structure and good in working performance. Due to the fact that the aluminum chloride or ammonium chloride, which is easy to sublimate under heat, is coated on the surface of the aluminum wire layer used for conducting, during disruptive discharge of the medium-voltage insulating wire, sublimation, under high temperature, from solid to gas brings away a huge amount of heat, and temperature of discharge points is lowered.
Description
Technical field
The present invention relates to press insulated conductor in a kind of anti-lightning strike broken string.
Background technology
The extensive use in electric power system of middle pressure insulated conductor mainly is that his advantage determines, he can the particularly urban look greening and power circuit passage and this a great problem of power circuit safe operation of fine solution tree line contradiction.But he also has to the life weakness, when power circuit is subjected to atmospheric over-voltage (thunderbolt) discharge, he is broken string just, have a strong impact on behind the broken string outside the stable operation of electric power system, bigger problem is the security of the lives and property of the masses around the influence, and this has limited his application prospect again.His broken string mechanism is as follows: be subjected to atmospheric over-voltage at middle pressure insulated conductor circuit, can not meet the demands at first in the weak spot discharge of insulating as insulation, the puncture of one point appears in insulating barrier during discharge, because breakdown point is very little, electric arc can not move, cause this temperature very high, the high temperature of moment makes the fusing of this metallic aluminium and breaks.The mode that adopts is at present: install zinc oxide arrester, discharge interval, lightning conducter or coupling ground wire on the middle pressure insulated conductor circuit additional and prevent that the middle insulated conductor of pressing is in the measure of atmospheric over-voltage broken string, these all are passive types, effect is not ideal, and the accident of broken string still often takes place.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructurely, press insulated conductor in the anti-lightning strike broken string of favorable working performance.
Technical solution of the present invention is:
Press insulated conductor in a kind of anti-lightning strike broken string, it is characterized in that: comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
The cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters.
The present invention is rational in infrastructure, favorable working performance; The middle pressure is coated with (heat) easily sublimator material on the insulated conductor conductor wire face.In when pressing insulated conductor disruptive discharge owing to be coated with easily (heat) sublimator material on the conductor wire face, under high-temperature condition, distillation is taken away a large amount of heats when directly becoming gas by solid, reduces the temperature of point of discharge.Add 16 to 25 square millimeters of multiply steel cores in the middle of the middle pressure insulated conductor.The fusing point of steel is 1300 to 1400 degrees centigrade, and aluminium has only 660.2 degrees centigrade, and has only steel half, when appearring in point of discharge, high temperature both made aluminum steel fusing like this, steel core is not fused, and insulated conductor is not broken, and is actually to have improved the middle insulated conductor intensity of pressing under the high temperature.
The invention will be further described below in conjunction with embodiment.
Embodiment
Press insulated conductor in a kind of anti-lightning strike broken string, comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
The cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters; The collocation of size so very is of value to the raising of service behaviour.
Claims (2)
1. press insulated conductor in an anti-lightning strike broken string, it is characterized in that: comprise the steel core that steel wire strand is combined into, steel core coats the aluminum steel layer outward, and the aluminum steel laminar surface applies aluminium chloride or ammonium chloride, aluminum steel outsourcing insulating layer coating.
2. press insulated conductor in the anti-lightning strike broken string according to claim 1, it is characterized in that: the cross-sectional area of steel core is 16 ~ 25 square millimeters; The cross-sectional area of aluminum conductor is 50 ~ 300 square millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102050960A CN103295693A (en) | 2013-05-29 | 2013-05-29 | Lightening-breakage-preventing medium-voltage insulating wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102050960A CN103295693A (en) | 2013-05-29 | 2013-05-29 | Lightening-breakage-preventing medium-voltage insulating wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103295693A true CN103295693A (en) | 2013-09-11 |
Family
ID=49096414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102050960A Pending CN103295693A (en) | 2013-05-29 | 2013-05-29 | Lightening-breakage-preventing medium-voltage insulating wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103295693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733880A (en) * | 2013-12-20 | 2015-06-24 | 国家电网公司 | Electric transmission line and ground wire thereof |
| CN108154964A (en) * | 2016-12-05 | 2018-06-12 | 苏永义 | Insulated conductor is pressed in a kind of anti-lightning strike broken string |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157004A (en) * | 1987-12-11 | 1989-06-20 | Fujikura Ltd | Thunder-proof electric wire |
| JPH01246711A (en) * | 1988-03-28 | 1989-10-02 | Fujikura Ltd | Lightening protective wire |
| CN1776983A (en) * | 2005-10-12 | 2006-05-24 | 江苏省电力公司扬州供电公司 | Lightning-inductive shielding line for 10KV overhead insulated conducting wire for preventing thunderstrike breakage |
-
2013
- 2013-05-29 CN CN2013102050960A patent/CN103295693A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01157004A (en) * | 1987-12-11 | 1989-06-20 | Fujikura Ltd | Thunder-proof electric wire |
| JPH01246711A (en) * | 1988-03-28 | 1989-10-02 | Fujikura Ltd | Lightening protective wire |
| CN1776983A (en) * | 2005-10-12 | 2006-05-24 | 江苏省电力公司扬州供电公司 | Lightning-inductive shielding line for 10KV overhead insulated conducting wire for preventing thunderstrike breakage |
Non-Patent Citations (2)
| Title |
|---|
| 《电力设备选型手册》编写组: "《电力设备选型手册（下册）》", 30 April 2012, 中国水利水电出版社 * |
| 张学铭等: "《化学小辞典（第二版）》", 31 August 1994, 科学技术文献出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733880A (en) * | 2013-12-20 | 2015-06-24 | 国家电网公司 | Electric transmission line and ground wire thereof |
| CN108154964A (en) * | 2016-12-05 | 2018-06-12 | 苏永义 | Insulated conductor is pressed in a kind of anti-lightning strike broken string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130911 |