CN102568692A - Cross-connecting noninductive coaxial cable - Google Patents
Cross-connecting noninductive coaxial cable Download PDFInfo
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- CN102568692A CN102568692A CN2012100506692A CN201210050669A CN102568692A CN 102568692 A CN102568692 A CN 102568692A CN 2012100506692 A CN2012100506692 A CN 2012100506692A CN 201210050669 A CN201210050669 A CN 201210050669A CN 102568692 A CN102568692 A CN 102568692A
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Abstract
The invention discloses a cross-connecting noninductive coaxial cable which comprises copper conductors, a cross-linked polyethylene insulating layer, copper concentric conductors and a polyethylene sheath layer. The copper conductors are positioned at the center of the cable; the cross-linked polyethylene insulating layer is extruded on the outer surfaces of the copper conductors; the copper concentric conductors are wound and stranded on the outer surface of the cross-linked polyethylene insulating layer; the section of each copper concentric conductor and the section of each copper conductor are equal in area; and the polyethylene sheath layer is extruded on the outer surfaces of the copper concentric conductors. Therefore, according to the invention, the copper conductors and the copper concentric conductors are simultaneously arranged in the single cable, are isolated by the cross-linked polyethylene insulating layer and are respectively connected with a metal sleeve and an outer sheath of an in-phase high voltage cable when the cross-connecting noninductive coaxial cable is used, the invisible fault of misphase connection can be avoided, and furthermore, the successful cross connection is ensured.
Description
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Technical field
The present invention relates to a kind of cable, relate in particular to a kind of cross interconnected noninductive coaxial cable.
Background technology
At present, the above general every phase of high voltage power transmission and transforming circuit of 110kv is all transmitted alternating current with single-core cable, and three-phase is a word or isosceles triangle lays.High voltage single-core cable generally all has metallic sheath, and such as wrinkle aluminum metal cover, metallic sheath is under the action of alternative electric field that every phase current transmission produces; Can produce induced voltage, also will in metallic sheath, produce induced current, because the resistivity of metallic sheath is less; Lower induced voltage also can produce bigger induced current; Induced current will cause the heating of metallic sheath, thereby reduce the ampacity of cable, influence transmission of electricity safety.Therefore; This influence when exchanging transmission for reducing single-core cable; Whenever just need threephase cable cross interconnected at a distance from a segment distance; It is cross interconnected to reduce the influence of induced voltage that the cross interconnected continuity of using special-purpose junction box to guarantee transmission line, metallic sheath and cable jacket then use other cable respectively.Because metallic sheath, the oversheath of high-tension cable connect with single-core cable respectively, occur wrong easily and equate stealthy error, thereby cause cross interconnected failure.
Summary of the invention
To the deficiency of prior art, the object of the invention is intended to provide a kind of cross interconnected noninductive coaxial cable, and the stealth error that it can avoid taking place the wrong phase guarantees cross interconnected success.
For realizing that above-mentioned purpose the present invention adopts following technical scheme:
A kind of cross interconnected noninductive coaxial cable comprises copper conductor, crosslinked polyetylene insulated layer, copper concentric conductor and pe sheath layer; This copper conductor is positioned at the center of cable, and crosslinked polyetylene insulated layer extrudes the outer surface in copper conductor; The copper concentric conductor twines stranded outer surface in crosslinked polyetylene insulated layer, and the cross section of copper concentric conductor equates with the area of section of copper conductor; Said pe sheath layer extrudes in the outer surface of copper concentric conductor.
As a kind of preferred version, the thickness of said crosslinked polyetylene insulated layer is not less than 5mm, and the degree of eccentricity of crosslinked polyetylene insulated layer is not more than 10%.
As a kind of preferred version, the thickness of said pe sheath layer is not less than 5mm.
As a kind of preferred version, said copper conductor is circular stranded conductor.
A kind of cross interconnected noninductive coaxial cable that the present invention set forth; Its beneficial effect is: copper conductor among the present invention and copper concentric conductor are present in the unit cable simultaneously; Both isolate through crosslinked polyetylene insulated layer each other; The metallic sheath and the oversheath that connect the homophase high-tension cable during use respectively can be avoided taking place the stealth error of wrong phase, thereby guarantee cross interconnected success.
Description of drawings
Fig. 1 is the configuration diagram of the embodiment of the invention.
Attach the body label declaration:
1, copper conductor 2, crosslinked polyetylene insulated layer
3, copper concentric conductor 4, pe sheath layer
Embodiment
Come the present invention is further described below in conjunction with accompanying drawing and specific embodiment.
Please with reference to shown in Figure 1, it has demonstrated the concrete structure of preferred embodiment of the present invention, and a kind of cross interconnected noninductive coaxial cable comprises copper conductor 1, crosslinked polyetylene insulated layer 2, copper concentric conductor 3 and pe sheath layer 4, wherein:
Said copper conductor 1 is positioned at the center of cable, and this copper conductor 1 adopts circular stranded conductor, so that the construction when cross interconnected promotes the reliability that connects.
Said crosslinked polyetylene insulated layer 2 extrudes in the outer surface of copper conductor 1, and this crosslinked polyetylene insulated layer 2 has favorable mechanical and electric property, is used to protect copper conductor 1 and with copper conductor 1 and 3 isolation of copper concentric conductor, both is independent of each other.The thickness of this crosslinked polyetylene insulated layer 2 is very crucial indexs; The instantaneous voltage that thickness is too small to be caused when being unfavorable for bearing line fault raises; Also be unfavorable for the protection to copper conductor 1, thickness is too high then to be unfavorable for installing the flexural deformation when laying, through a large amount of research and experiments; Find that crosslinked polyetylene insulated layer 2 is not less than 5mm, the degree of eccentricity at thickness and is not more than under 10% the situation; Not only can bear corresponding instantaneous voltage and raise, protection copper conductor 1, and satisfy diastrophic requirement when laying is installed.
Said copper concentric conductor 3 twines stranded outer surface in crosslinked polyetylene insulated layer 2, and this copper concentric conductor 3 adopts circular copper wire to twine stranded forming, and circular copper wire is arranged closely, rounding, and the cross section of copper concentric conductor 3 equates with the area of section of copper conductor 1.
Said pe sheath layer 4 extrudes in the outer surface of copper concentric conductor 3, is used to protect copper concentric conductor 3.Consider copper concentric conductor 3 or deformation requirements when twining stranded at single line, the thickness of this pe sheath layer 4 should be not less than 5mm, can fully be coated on the outer surface of copper concentric conductor 3.
The above; It only is preferred embodiment of the present invention; Be not that technical scope of the present invention is done any restriction, so every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any trickle modification, equivalent variations and modification that above embodiment did.
Claims (4)
1. a cross interconnected noninductive coaxial cable is characterized in that: comprise copper conductor, crosslinked polyetylene insulated layer, copper concentric conductor and pe sheath layer; This copper conductor is positioned at the center of cable, and crosslinked polyetylene insulated layer extrudes the outer surface in copper conductor; The copper concentric conductor twines stranded outer surface in crosslinked polyetylene insulated layer, and the cross section of copper concentric conductor equates with the area of section of copper conductor; Said pe sheath layer extrudes in the outer surface of copper concentric conductor.
2. cross interconnected noninductive coaxial cable according to claim 1 is characterized in that: the thickness of said crosslinked polyetylene insulated layer is not less than 5mm, and the degree of eccentricity of crosslinked polyetylene insulated layer is not more than 10%.
3. cross interconnected noninductive coaxial cable according to claim 1, it is characterized in that: the thickness of said pe sheath layer is not less than 5mm.
4. cross interconnected noninductive coaxial cable according to claim 1 is characterized in that: said copper conductor is circular stranded conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100506692A CN102568692A (en) | 2012-02-29 | 2012-02-29 | Cross-connecting noninductive coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100506692A CN102568692A (en) | 2012-02-29 | 2012-02-29 | Cross-connecting noninductive coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102568692A true CN102568692A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100506692A Pending CN102568692A (en) | 2012-02-29 | 2012-02-29 | Cross-connecting noninductive coaxial cable |
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| CN (1) | CN102568692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187123A (en) * | 2013-03-28 | 2013-07-03 | 江苏华亚电缆有限公司 | Cross-connection grounding coaxial cable |
| CN110111942A (en) * | 2019-06-05 | 2019-08-09 | 上海华普电缆有限公司 | Three coaxial cables of one kind and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344846Y (en) * | 1998-05-12 | 1999-10-20 | 辽阳市太子河区银河计算机仪表销售处 | Theft-proof electric wire and cable |
| CN2409582Y (en) * | 1999-12-29 | 2000-12-06 | 金宝石 | Insulative conductor |
| CN200965813Y (en) * | 2006-10-20 | 2007-10-24 | 广东电缆厂有限公司 | Radiation cross-linking special power cable |
| 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 |
| CN202093857U (en) * | 2011-05-23 | 2011-12-28 | 天津六○九电缆有限公司 | 75 kV low-impedance coaxial cable |
| CN202473393U (en) * | 2012-02-29 | 2012-10-03 | 广州岭南电缆股份有限公司 | Cross interconnection noninductive coaxial-cable |
-
2012
- 2012-02-29 CN CN2012100506692A patent/CN102568692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344846Y (en) * | 1998-05-12 | 1999-10-20 | 辽阳市太子河区银河计算机仪表销售处 | Theft-proof electric wire and cable |
| CN2409582Y (en) * | 1999-12-29 | 2000-12-06 | 金宝石 | Insulative conductor |
| CN200965813Y (en) * | 2006-10-20 | 2007-10-24 | 广东电缆厂有限公司 | Radiation cross-linking special power cable |
| 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 |
| CN202093857U (en) * | 2011-05-23 | 2011-12-28 | 天津六○九电缆有限公司 | 75 kV low-impedance coaxial cable |
| CN202473393U (en) * | 2012-02-29 | 2012-10-03 | 广州岭南电缆股份有限公司 | Cross interconnection noninductive coaxial-cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187123A (en) * | 2013-03-28 | 2013-07-03 | 江苏华亚电缆有限公司 | Cross-connection grounding coaxial cable |
| CN110111942A (en) * | 2019-06-05 | 2019-08-09 | 上海华普电缆有限公司 | Three coaxial cables of one kind and preparation method thereof |
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Application publication date: 20120711 |