CN103187123A - Cross-connection grounding coaxial cable - Google Patents
Cross-connection grounding coaxial cable Download PDFInfo
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- CN103187123A CN103187123A CN2013101030245A CN201310103024A CN103187123A CN 103187123 A CN103187123 A CN 103187123A CN 2013101030245 A CN2013101030245 A CN 2013101030245A CN 201310103024 A CN201310103024 A CN 201310103024A CN 103187123 A CN103187123 A CN 103187123A
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- coaxial cable
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- outer conductor
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- inner conductor
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Abstract
The invention discloses a cross-connection grounding coaxial cable. The cross-connection grounding coaxial cable comprises an inner conductor, an insulating layer, an outer conductor, and a sheath layer extruded outside the outer conductor, wherein the inner conductor is formed by twisting a plurality of flexible circular copper wires; a crosslinked polyethylene insulating layer is extruded outside the inner conductor; the outer conductor having the same section with the inner conductor is concentrically wound outside the insulating layer; and a polyethylene sheath layer is extruded outside the outer conductor. The cross-connection grounding coaxial cable disclosed by the invention is used for connection for the protection box and the transposition box of the sheath layer insulating protection device of a 110-220 kV crosslinked cable circuit. The inner conductor and the concentrically-wound outer conductor in the cross-connection grounding coaxial cable disclosed by the invention exist in a single cable simultaneously, are isolated from each other via the crosslinked polyethylene insulating layer, and connected with the metal sleeve and the outer sheath of an in-phase high-pressure cable respectively during use, thus avoiding the invisible errors of phase misconnection, and then ensuring successful cross-connection.
Description
Technical field
The present invention relates to coaxial cable field, specifically is a kind of cross interconnected ground connection coaxial cable.
Background technology
At present, long distance is laid 110kV～220kV crosslinked cable, must press the equidistant segmentation of certain-length, makes the induced voltage≤50V(safe voltage scope in the cable metal sheath), circulation is as far as possible little in the sheath.Often cable loop is divided into 3 sections or 3 the integral multiple section that length equates substantially in the design.Sheath adopts cross interconnected transposition earthing mode in cable installation, the installation, is prone to some contact recessiveness error when cross interconnected wiring, causes incomplete and difficult timely the discovery and corrigendum of transposition, makes circulation increase in the sheath.The mode of connection of a kind of cross interconnected ground connection coaxial cable of the present invention can effectively reduce the increment of induced potential and circulation, guarantees the normal operation of circuit.
Summary of the invention
In order to address the above problem, the present invention is merged into one with the structure of two original earth connections by inner and outer conductor, has reduced the possibility of misconnection.
The structure of this cable comprises inner wire, extrudes crosslinked polyetylene insulated layer in the conductor, and many are wrapped in the outer conductor of the identical soft round copper wire formation of insulating barrier overall diameter with one heart and are extruded in outermost restrictive coating.
Further improve, described inner wire is to be formed by the some identical soft round copper wire strand systems of diameter.
Further improve, described insulating barrier, its insulation nominal thickness is more than the 4.6mm.
Further improve, the sectional area of described outer conductor is identical with inner wire.
Further improve, the nominal thickness of described restrictive coating is more than the 3.0mm.
Beneficial effect of the present invention is: one end of cross interconnected ground connection coaxial cable can be connected with the high voltage power cable metal sheath during use; the other end is connected with earth protective device, thereby the overvoltage of the cable metal sheath end of high-tension electricity electricity can be imported the normal operation that earth protective device is protected high voltage power cable effectively.The internal and external conductor connected mode is rationally convenient, uses reliably, is used for the cross interconnected wiring of high-tension cable, can effectively reduce the induced potential of metallic sheath.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, this is novel to be a kind of cross interconnected ground connection coaxial cable, the some identical soft round copper wire strands of diameter is made inner wire 1, successively at inner wire 1 outsourcing insulating layer coating 2, outside insulating barrier 2, twine outer conductor 3 with one heart, outside outer conductor 3, extrude restrictive coating 4 at last.
The used inner wire 1 of the present invention is formed by the some identical soft round copper wire strand systems of diameter; Insulating barrier 2 adopts cross-linking polyethylene materials to extrude, and temperature resistant grade can reach 90 ℃; Outer conductor layer 3 is to be wrapped in one heart on the insulating barrier 2 by many soft round copper wires to constitute, and the outer conductor sectional area equates with the inner wire sectional area; Restrictive coating 4 is to extrude the pe sheath that nominal thickness is 3.0mm outside outer conductor 3.
The concrete application approach of the present invention is a lot, and the above only is preferred implementation 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. cross interconnected ground connection coaxial cable, it is characterized in that: comprise inner wire (1), be extruded in the crosslinked polyetylene insulated layer (2) on the inner wire (1), many are wrapped in the outer conductor (3) of the identical soft round copper wire formation of insulating barrier (2) overall diameter with one heart and are extruded in outermost restrictive coating (4).
2. cross interconnected ground connection coaxial cable according to claim 1 is characterized in that: described inner wire (1) is to be formed by the some identical soft round copper wires strand systems of diameter.
3. cross interconnected ground connection coaxial cable according to claim 1, it is characterized in that: the insulation nominal thickness of described insulating barrier (2) is more than the 4.6mm.
4. cross interconnected ground connection coaxial cable according to claim 1, it is characterized in that: the sectional area of described outer conductor (3) is identical with inner wire (1).
5. cross interconnected ground connection coaxial cable according to claim 1, it is characterized in that: the nominal thickness of described restrictive coating (4) is more than the 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101030245A CN103187123A (en) | 2013-03-28 | 2013-03-28 | Cross-connection grounding coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101030245A CN103187123A (en) | 2013-03-28 | 2013-03-28 | Cross-connection grounding coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103187123A true CN103187123A (en) | 2013-07-03 |
Family
ID=48678250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101030245A Pending CN103187123A (en) | 2013-03-28 | 2013-03-28 | Cross-connection grounding coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103187123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680695A (en) * | 2013-12-12 | 2014-03-26 | 无锡江南电缆有限公司 | Compact four-core ribbon cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254615A (en) * | 2011-05-06 | 2011-11-23 | 无锡市曙光电缆有限公司 | Cross-connect grounding coaxial cable for extra-high tension cable circuit |
| CN102290136A (en) * | 2011-06-09 | 2011-12-21 | 湖南金杯电缆有限公司 | Power cable with outer conductor |
| CN102568692A (en) * | 2012-02-29 | 2012-07-11 | 广州岭南电缆股份有限公司 | Cross-connecting noninductive coaxial cable |
-
2013
- 2013-03-28 CN CN2013101030245A patent/CN103187123A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254615A (en) * | 2011-05-06 | 2011-11-23 | 无锡市曙光电缆有限公司 | Cross-connect grounding coaxial cable for extra-high tension cable circuit |
| CN102290136A (en) * | 2011-06-09 | 2011-12-21 | 湖南金杯电缆有限公司 | Power cable with outer conductor |
| CN102568692A (en) * | 2012-02-29 | 2012-07-11 | 广州岭南电缆股份有限公司 | Cross-connecting noninductive coaxial cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680695A (en) * | 2013-12-12 | 2014-03-26 | 无锡江南电缆有限公司 | Compact four-core ribbon cable |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130703 |