CN102751032A - Flame-retardant power cable with concentric conductors - Google Patents
Flame-retardant power cable with concentric conductors Download PDFInfo
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- CN102751032A CN102751032A CN2012102527284A CN201210252728A CN102751032A CN 102751032 A CN102751032 A CN 102751032A CN 2012102527284 A CN2012102527284 A CN 2012102527284A CN 201210252728 A CN201210252728 A CN 201210252728A CN 102751032 A CN102751032 A CN 102751032A
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Abstract
The invention provides a flame-retardant power cable with concentric conductors. The flame-retardant power cable comprises insulating cores, each insulating core comprises a conductor and an insulating layer, the conductors are copper conductors or aluminum conductors, the insulating layers are crosslinked polyethylene insulating layers and wound by a wrapping tape layer which is a nonwoven wrapping tape layer, and the concentric conductors which are made of copper wires or copper strips are wound outside the wrapping tape layer and externally wrapped by an inner sheath layer, an armor layer and an outer sheath layer sequentially. The flame-retardant power cable with the concentric conductors is convenient to process, fine in flexibility and easy for construction, and cost can be effectively reduced. Interferences to surrounding electrical equipment can be effectively avoided during power transmission while influences of external electromagnetic interference on connection of the cable are eliminated, overvoltage and cable breakdown or damage caused by powerful lightning can be avoided, and accordingly safety and reliability of the cable are improved.
Description
Technical field
The present invention relates to a kind of power cable, relate in particular to a kind of concentric conductor flame-proof power cable.
Background technology
The concentric conductor power cable is compared with sheath power cable with common plastic insulation; Have lot of advantages, its use helps improving the security reliability of electric power system, has improved the transmission of electricity quality; Be more suitable for the requirement of modern power transmission and transformation system, have vast potential for future development and application market.
But in the domestic cable product; Do not have or seldom adopt the version of concentric type conductor, abroad some developed countries mostly are devoted to the research of this respect, and put into practice; The design principle of concentric conductor power cable: 1, for the ease of producing and management the line footpath of as far as possible unified concentric conductor; 2, according to production equipment, guaranteeing that concentric conductor is evenly distributed on on the lapping layer of cable core, its spacing is not more than regulation minimum line footpath under the situation of 4mm, and the radical of lead is few more good more; 3, in order to guarantee the even of concentric conductor; And not relative slip; Guarantee that again sheath extrudes back cable outward appearance rounding, the nonwoven fabrics or the PVC that adopt layering be with wrapped method, and promptly band and lead concentric stranding or copper strips are wrapped and nonwoven fabric belts is overlapping wrapped behind the insulated wire cores stranding.
Summary of the invention
The purpose of this invention is to provide a kind of concentric conductor flame-proof power cable and solve fail safe and the reliability that improves electric power system, improve the transmission of electricity quality, is that cable is more suitable for the problem that modern power transmission and transformation system requires.
Technical solution of the present invention is:
A kind of concentric conductor flame-proof power cable comprises insulated wire cores, and said insulated wire cores comprises conductor and insulating barrier; Said conductor is copper core or aluminium core, and said insulating barrier is crosslinked polyetylene insulated layer, and said insulated wire cores is surrounded with belting layer outward; Said belting layer is the nonwoven fabric belts belting layer; Said belting layer is surrounded with concentric conductor outward, and said concentric conductor is copper wire or copper strips, and said concentric conductor is enclosed with inner restrictive coating, armour and external sheath layer outward successively; Said inner restrictive coating is the polyvinyl chloride inner restrictive coating, and said external sheath layer is the crosslinked polyethylene external sheath layer.
Further improve and be: be filled with glass fiber between said insulating barrier and belting layer.
Further improve and be: said armour is the LWA light wire armoured layer.
Further improve and be: the quantity of said insulated wire cores is three.
A kind of concentric conductor flame-proof power cable of the present invention; Concentric conductor wraps in outside the insulated wire cores, can be used as the neutral line, earth connection, also can be that the neutral line and earth connection are shared; Material is that copper wire, copper strips or copper wire add copper strips, and the size in its cross section is identical with cable phase line cross section or half the.And guaranteeing that concentric conductor is evenly distributed on the lapping layer of stranding insulated wire cores, its spacing is not more than under the situation of 4mm and stipulates that its minimum line makes that directly the radical of lead is less.
This kind concentric conductor flame-proof power cable, easy to process, can effectively reduce cost, good flexibility is easy to construction.This kind concentric conductor flame-proof power cable can be avoided when transmitting electric power in the interference of electric equipment generation on every side effectively; Eliminate external electromagnetic interference to being connected the influence of this cable; Overvoltage and cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; Improve the fail safe and the reliability of cable; Can improve the sensitivity of circuit head end overcurrent protective device, cable and other equipment are effectively protected, can eliminate the earth fault that takes place because of a phase insulation breakdown as early as possible.
The invention has the beneficial effects as follows: a kind of concentric conductor flame-proof power cable of the present invention, easy to process, can effectively reduce cost, good flexibility is easy to construction.When transmitting electric power, can avoid effectively in the interference of electric equipment generation on every side; Eliminate external electromagnetic interference to being connected the influence of this cable; Overvoltage and cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause, the fail safe and the reliability of raising cable, the sensitivity that can improve circuit head end overcurrent protective device; Cable and other equipment are effectively protected, can eliminate the earth fault that takes place because of a phase insulation breakdown as early as possible.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Wherein: 1-conductor, 2-insulating barrier, 3-belting layer, 4-concentric conductor, 5-inner restrictive coating, 6-armour, 7-external sheath layer.
Embodiment
Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiment provides a kind of concentric conductor flame-proof power cable, comprises insulated wire cores; Said insulated wire cores comprises conductor 1 and insulating barrier 2, and said conductor 1 is the copper core, and said insulating barrier 2 is crosslinked polyetylene insulated layer; Said insulated wire cores is surrounded with belting layer 3 outward, and said belting layer 3 is the nonwoven fabric belts belting layer, the said belting layer 3 outer concentric conductors 4 that are surrounded with; Said concentric conductor 4 is a copper wire; Be enclosed with inner restrictive coating 5, armour 6 and external sheath layer 7 successively outside the said concentric conductor 4, said inner restrictive coating 5 is the polyvinyl chloride inner restrictive coating, and said external sheath layer 7 is the crosslinked polyethylene external sheath layer; Said armour 6 is the LWA light wire armoured layer, and the quantity of said insulated wire cores is three.
A kind of concentric conductor flame-proof power cable of present embodiment; Concentric conductor 4 wraps in outside the insulated wire cores, can be used as the neutral line, earth connection, also can be that the neutral line and earth connection are shared; Material is that copper wire, copper strips or copper wire add copper strips, and the size in its cross section is identical with cable phase line cross section or half the.And guaranteeing that concentric conductor 4 is evenly distributed on the lapping layer of stranding insulated wire cores, its spacing is not more than under the situation of 4mm and stipulates that its minimum line makes that directly the radical of lead is less.
This kind concentric conductor flame-proof power cable, easy to process, can effectively reduce cost, good flexibility is easy to construction.This kind concentric conductor flame-proof power cable can be avoided when transmitting electric power in the interference of electric equipment generation on every side effectively; Eliminate external electromagnetic interference to being connected the influence of this cable; Overvoltage and cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; Improve the fail safe and the reliability of cable; Can improve the sensitivity of circuit head end overcurrent protective device, cable and other equipment are effectively protected, can eliminate the earth fault that takes place because of a phase insulation breakdown as early as possible.
The beneficial effect of present embodiment is: a kind of concentric conductor flame-proof power cable of present embodiment, and easy to process, can effectively reduce cost, good flexibility is easy to construction.When transmitting electric power, can avoid effectively in the interference of electric equipment generation on every side; Eliminate external electromagnetic interference to being connected the influence of this cable; Overvoltage and cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause, the fail safe and the reliability of raising cable, the sensitivity that can improve circuit head end overcurrent protective device; Cable and other equipment are effectively protected, can eliminate the earth fault that takes place because of a phase insulation breakdown as early as possible.
Claims (4)
1. concentric conductor flame-proof power cable; It is characterized in that: comprise insulated wire cores, said insulated wire cores comprises conductor (1) and insulating barrier (2), and said conductor (1) is copper core or aluminium core; Said insulating barrier (2) is crosslinked polyetylene insulated layer; Said insulated wire cores is surrounded with belting layer (3) outward, and said belting layer (3) is the nonwoven fabric belts belting layer, the outer concentric conductor (4) that is surrounded with of said belting layer (3); Said concentric conductor (4) is copper wire or copper strips; Said concentric conductor (4) is outer to be enclosed with inner restrictive coating (5), armour (6) and external sheath layer (7) successively, and said inner restrictive coating (5) is the polyvinyl chloride inner restrictive coating, and said external sheath layer (7) is the crosslinked polyethylene external sheath layer.
2. a kind of concentric conductor flame-proof power cable as claimed in claim 1 is characterized in that: be filled with glass fiber between said insulating barrier (2) and belting layer (3).
3. according to claim 1 or claim 2 a kind of concentric conductor flame-proof power cable, it is characterized in that: said armour (6) is the LWA light wire armoured layer.
4. according to claim 1 or claim 2 a kind of concentric conductor flame-proof power cable, it is characterized in that: the quantity of said insulated wire cores is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102527284A CN102751032A (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102527284A CN102751032A (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductors |
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| Publication Number | Publication Date |
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| CN102751032A true CN102751032A (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102527284A Pending CN102751032A (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductors |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969070A (en) * | 2012-12-13 | 2013-03-13 | 山东昆嵛电缆有限公司 | Five-core power cable with double-shielding function |
| CN103646690A (en) * | 2013-12-09 | 2014-03-19 | 中特华星电缆股份有限公司 | Cable used for integrated grounding system of alarm signal line |
| CN103943230A (en) * | 2014-03-17 | 2014-07-23 | 安徽红旗电缆集团有限公司 | Marine multi-conductor insulation flexible cord |
| CN104103365A (en) * | 2014-07-24 | 2014-10-15 | 安徽顺驰电缆有限公司 | Halogen-free, low-smoke and flame-retardant crosslinked cable |
| CN104867564A (en) * | 2014-02-26 | 2015-08-26 | 安徽江淮电缆集团有限公司 | Current-guiding cable with metal hose |
| CN110079072A (en) * | 2019-04-25 | 2019-08-02 | 扬州市金鑫电缆有限公司 | A kind of LSOH anti-flaming composite material and its application in the cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6225565B1 (en) * | 1999-06-07 | 2001-05-01 | The Untied States Of America As Represented By The Secretary Of The Navy | Flexible cable providing EMI shielding |
| CN201142245Y (en) * | 2008-01-07 | 2008-10-29 | 江苏长峰电缆有限公司 | Novel flame-proof fire resistant cable |
| CN201489892U (en) * | 2009-08-20 | 2010-05-26 | 上海南大集团有限公司 | Frequency converter cable with concentric conductors |
| CN202711843U (en) * | 2012-07-20 | 2013-01-30 | 安徽江淮电缆集团有限公司 | Flame-retardant power cable with concentric conductor |
-
2012
- 2012-07-20 CN CN2012102527284A patent/CN102751032A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6225565B1 (en) * | 1999-06-07 | 2001-05-01 | The Untied States Of America As Represented By The Secretary Of The Navy | Flexible cable providing EMI shielding |
| CN201142245Y (en) * | 2008-01-07 | 2008-10-29 | 江苏长峰电缆有限公司 | Novel flame-proof fire resistant cable |
| CN201489892U (en) * | 2009-08-20 | 2010-05-26 | 上海南大集团有限公司 | Frequency converter cable with concentric conductors |
| CN202711843U (en) * | 2012-07-20 | 2013-01-30 | 安徽江淮电缆集团有限公司 | Flame-retardant power cable with concentric conductor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969070A (en) * | 2012-12-13 | 2013-03-13 | 山东昆嵛电缆有限公司 | Five-core power cable with double-shielding function |
| CN103646690A (en) * | 2013-12-09 | 2014-03-19 | 中特华星电缆股份有限公司 | Cable used for integrated grounding system of alarm signal line |
| CN104867564A (en) * | 2014-02-26 | 2015-08-26 | 安徽江淮电缆集团有限公司 | Current-guiding cable with metal hose |
| CN103943230A (en) * | 2014-03-17 | 2014-07-23 | 安徽红旗电缆集团有限公司 | Marine multi-conductor insulation flexible cord |
| CN104103365A (en) * | 2014-07-24 | 2014-10-15 | 安徽顺驰电缆有限公司 | Halogen-free, low-smoke and flame-retardant crosslinked cable |
| CN110079072A (en) * | 2019-04-25 | 2019-08-02 | 扬州市金鑫电缆有限公司 | A kind of LSOH anti-flaming composite material and its application in the cable |
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Application publication date: 20121024 |