CN202711843U - Flame-retardant power cable with concentric conductor - Google Patents
Flame-retardant power cable with concentric conductor Download PDFInfo
- Publication number
- CN202711843U CN202711843U CN 201220353994 CN201220353994U CN202711843U CN 202711843 U CN202711843 U CN 202711843U CN 201220353994 CN201220353994 CN 201220353994 CN 201220353994 U CN201220353994 U CN 201220353994U CN 202711843 U CN202711843 U CN 202711843U
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- power cable
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Abstract
The utility model provides a flame-retardant power cable with a concentric conductor, comprising an insulating wire core, wherein the insulating wire core comprises a conductor and an insulating layer; the conductor is a copper core or an aluminium core; the insulating layer is a crosslinked polyethylene insulating layer; a lapping layer is lapped outside the insulating wire core, and the lapping layer is a non-woven fabric lapping layer; the concentric conductor is lapped outside the lapping layer, and the concentric conductor is a copper wire or a copper tape; and an inner sheath layer, an armour layer and an outer sheath layer are sequentially wrapped outside the concentric conductor. The flame-retardant power cable with the concentric conductor is convenient to process, capable of effectively reducing cost, good in flexibility, and easy for construction. The flame-retardant power cable with the concentric conductor can eliminate the influence of external electromagnetic interference on connection to the cable while effectively avoiding interference with surrounding electrical equipment during electric power transmission, and can avoid cable breakdown or damage due to overvoltage caused by strong lightning, thus improving the safety and the reliability of the cable.
Description
Technical field
The utility model relates to a kind of power cable, relates in particular to a kind of antiflaming power cable of concentric conductors.
Background technology
Concentric-conductor power cable is compared with sheath power cable with common plastic insulation, have lot of advantages, its use is conducive to improve 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 production and administration, the wire diameter 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 the minimum wire diameter of regulation in the situation of 4mm, and the radical of wire is more few better; 3, in order to guarantee the even of concentric conductor, and not relative slip, guarantee again cable outward appearance rounding behind the sheathing, adopt the nonwoven fabrics of layering or PVC with wrapped method, namely band and wire concentric stranding or copper strips are wrapped and nonwoven fabric belts is overlapping wrapped behind the insulated wire cores stranding.
The utility model content
The purpose of this utility model provides a kind of antiflaming power cable of concentric conductors and solves the safety and reliability that improves electric power system, improves 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 utility model is:
A kind of antiflaming power cable of concentric conductors, comprise insulated wire cores, described insulated wire cores comprises conductor and insulating barrier, described conductor is copper core or aluminium core, described insulating barrier is crosslinked polyetylene insulated layer, described insulated wire cores is surrounded with belting layer outward, described belting layer is the nonwoven fabric belts belting layer, described belting layer is surrounded with concentric conductor outward, described concentric conductor is copper wire or copper strips, described concentric conductor is enclosed with inner restrictive coating, armour and external sheath layer outward successively, and described inner restrictive coating is the polyvinyl chloride inner sheath layer, and described external sheath layer is the crosslinked polyethylene external sheath layer.
Further improve and be: be filled with glass fiber between described insulating barrier and belting layer.
Further improve and be: described armour is the LWA light wire armoured layer.
Further improve and be: the quantity of described insulated wire cores is three.
A kind of antiflaming power cable of concentric conductors of the utility model, 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 share, material is that copper wire, copper strips or copper wire add copper strips, the size in its cross section identical with cable phase line cross section or half.And guaranteeing that concentric conductor is evenly distributed on the lapping layer of stranding insulated wire cores, its spacing is not more than in the situation of 4mm and stipulates its minimum wire diameter so that the radical of wire is less.
This kind antiflaming power cable of concentric conductors, easy to process, can effectively reduce cost, good flexibility is easy to construction.This kind antiflaming power cable of concentric conductors can be avoided when transmitting electric power effectively in the interference of electric equipment generation on every side; eliminate external electromagnetic interference to being connected to the impact of this cable; overvoltage and the cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; improve the safety and reliability of cable; can improve the sensitivity of circuit head end overcurrent protective device; cable and other equipment are effectively protected, can eliminate as early as possible the earth fault that occurs because of a phase insulation breakdown.
The beneficial effects of the utility model are: a kind of antiflaming power cable of concentric conductors of the utility model, and easy to process, can effectively reduce cost, good flexibility is easy to construction.When transmitting electric power, can effectively avoid in the interference of electric equipment generation on every side; eliminate external electromagnetic interference to being connected to the impact of this cable; overvoltage and the cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; improve the safety and reliability of cable; can improve the sensitivity of circuit head end overcurrent protective device; cable and other equipment are effectively protected, can eliminate as early as possible the earth fault that occurs because of a phase insulation breakdown.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Wherein: 1-conductor, 2-insulating barrier, 3-belting layer, 4-concentric conductor, 5-inner restrictive coating, 6-armour, 7-external sheath layer.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the present embodiment provides a kind of antiflaming power cable of concentric conductors, comprise insulated wire cores, described insulated wire cores comprises conductor 1 and insulating barrier 2, described conductor 1 is the copper core, described insulating barrier 2 is crosslinked polyetylene insulated layer, described insulated wire cores is surrounded with belting layer 3 outward, described belting layer 3 is the nonwoven fabric belts belting layer, the described belting layer 3 outer concentric conductors 4 that are surrounded with, described concentric conductor 4 is copper wire, the described concentric conductor 4 outer inner restrictive coatings 5 that are enclosed with successively, armour 6 and external sheath layer 7, described inner restrictive coating 5 is the polyvinyl chloride inner sheath layer, described external sheath layer 7 is the crosslinked polyethylene external sheath layer, described armour 6 is the LWA light wire armoured layer, and the quantity of described insulated wire cores is three.
A kind of antiflaming power cable of concentric conductors of the 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 share, material is that copper wire, copper strips or copper wire add copper strips, the size in its cross section identical with cable phase line cross section or half.And guaranteeing that concentric conductor 4 is evenly distributed on the lapping layer of stranding insulated wire cores, its spacing is not more than in the situation of 4mm and stipulates its minimum wire diameter so that the radical of wire is less.
This kind antiflaming power cable of concentric conductors, easy to process, can effectively reduce cost, good flexibility is easy to construction.This kind antiflaming power cable of concentric conductors can be avoided when transmitting electric power effectively in the interference of electric equipment generation on every side; eliminate external electromagnetic interference to being connected to the impact of this cable; overvoltage and the cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; improve the safety and reliability of cable; can improve the sensitivity of circuit head end overcurrent protective device; cable and other equipment are effectively protected, can eliminate as early as possible the earth fault that occurs because of a phase insulation breakdown.
The beneficial effect of the present embodiment is: a kind of antiflaming power cable of concentric conductors of the present embodiment, and easy to process, can effectively reduce cost, good flexibility is easy to construction.When transmitting electric power, can effectively avoid in the interference of electric equipment generation on every side; eliminate external electromagnetic interference to being connected to the impact of this cable; overvoltage and the cable breakdown that causes or the damage that can avoid powerful thunder and lightning to cause; improve the safety and reliability of cable; can improve the sensitivity of circuit head end overcurrent protective device; cable and other equipment are effectively protected, can eliminate as early as possible the earth fault that occurs because of a phase insulation breakdown.
Claims (4)
1. antiflaming power cable of concentric conductors, it is characterized in that: comprise insulated wire cores, described insulated wire cores comprises conductor (1) and insulating barrier (2), described conductor (1) is copper core or aluminium core, described insulating barrier (2) is crosslinked polyetylene insulated layer, described insulated wire cores is surrounded with belting layer (3) outward, described belting layer (3) is the nonwoven fabric belts belting layer, the outer concentric conductor (4) that is surrounded with of described belting layer (3), described concentric conductor (4) is copper wire or copper strips, the outer inner restrictive coating (5) that is enclosed with successively of described concentric conductor (4), armour (6) and external sheath layer (7), described inner restrictive coating (5) is the polyvinyl chloride inner sheath layer, and described external sheath layer (7) is the crosslinked polyethylene external sheath layer.
2. a kind of antiflaming power cable of concentric conductors as claimed in claim 1 is characterized in that: be filled with glass fiber between described insulating barrier (2) and belting layer (3).
3. a kind of antiflaming power cable of concentric conductors as claimed in claim 1 or 2, it is characterized in that: described armour (6) is the LWA light wire armoured layer.
4. a kind of antiflaming power cable of concentric conductors as claimed in claim 1 or 2, it is characterized in that: the quantity of described insulated wire cores is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353994 CN202711843U (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220353994 CN202711843U (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711843U true CN202711843U (en) | 2013-01-30 |
Family
ID=47592123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220353994 Expired - Fee Related CN202711843U (en) | 2012-07-20 | 2012-07-20 | Flame-retardant power cable with concentric conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711843U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751032A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Flame-retardant power cable with concentric conductors |
| CN103928111A (en) * | 2013-09-05 | 2014-07-16 | 安徽华源电缆集团有限公司 | Low-smoke zero-halogen flame-retardant light-weight control cable |
| CN104851501A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | Heat-resistant anti-interference gravity cable |
| CN104851483A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | Heat-resistant and oil-resistant gravity drainage cable |
-
2012
- 2012-07-20 CN CN 201220353994 patent/CN202711843U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751032A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Flame-retardant power cable with concentric conductors |
| CN103928111A (en) * | 2013-09-05 | 2014-07-16 | 安徽华源电缆集团有限公司 | Low-smoke zero-halogen flame-retardant light-weight control cable |
| CN104851501A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | Heat-resistant anti-interference gravity cable |
| CN104851483A (en) * | 2014-02-14 | 2015-08-19 | 安徽新华电缆(集团)有限公司 | Heat-resistant and oil-resistant gravity drainage cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |