CN201174272Y

CN201174272Y - Soft conductor flame-retardant protective sleeve shielded power cable

Info

Publication number: CN201174272Y
Application number: CNU2008201514712U
Authority: CN
Inventors: 张俊; 王勇诚; 徐守森
Original assignee: Shanghai Kuailu Wire & Cable Co Ltd
Current assignee: Shanghai Kuailu Wire & Cable Co Ltd
Priority date: 2008-07-31
Filing date: 2008-07-31
Publication date: 2008-12-31
Anticipated expiration: 2018-07-31

Abstract

The utility model discloses a flexible conductor antiflaming sheath-shielded power cable, which comprises two cable conductors, an inner sheath coated on the cable conductors, a shielding layer and an outer sheath, wherein the outer surfaces of the two cable conductors are respectively coated with an insulating layer; and the shielding layer comprises an annealed copper wire shielding layer formed by a plurality of annealed copper wires wound on the outer surface of the inner sheath in a stranding and compact mode as well as a copper foil belt shielding layer formed by a copper foil belt coated on the outer surface of the annealed copper wire shielding layer in a winding mode. The flexible conductor antiflaming sheath-shielded power cable is characterized in that a plurality of conductor copper wires are adopted, and halogen-free coloring of a conductor insulating layer is realized; due to adopting integrated grounded shield and shield, copper materials used for completing the two functions can be saved by 50 percent; meanwhile, the power cable has excellent electric resistance and each electrical property index can be increased by 14 to 30 percent; moreover, the power cable is not easy to burn or can realize retarded combustion, and releases less flue gas and halogen-free gas during combustion.

Description

Flexible conductor fire retardant jacket shielding power cable

Technical field

The utility model relates to a kind of power cable, is specifically related to a kind ofly to be used to communicate by letter, the flexible conductor fire retardant jacket shielding power cable in fields such as traffic, building, Aero-Space, exploration.

Background technology

The cross-linked polyolefin insulated power cable not only has good electrical insulation properties and heat resistance, and installs to lay and not limited by drop, so developed rapidly in recent years and use.The basic structure of cross-linked polyolefin insulated power cable is: cable conductor is coated on the insulating barrier of conductor outer surface and is coated on sheath and the screen and the outer jacket of insulating barrier outer surface.Traditional power cable structure: 1) conductor by in the minority, thick copper lines is stranded forms-conductor is hard, and is not flexible, cable is also not flexible, is difficult for installing, laying; 2) insulating barrier is not crosslinked, and temperature resistant grade is low, and ampacity is low; 3) original cable shield and grounding function are finished separately separately by disome, cause stock utilization lower, and cable cost can not reduce; 4) sheath is a Halogen type-when fire takes place, because the burned personnel's respiratory system on the scene of cable is with damaged; 5) sheath is when fire burns, and visibility is lower, is unfavorable for escape.

Summary of the invention

The purpose of this utility model is to shield power cable in order to overcome the deficiencies in the prior art, a kind of ground connection to be provided and to shield flexible conductor fire retardant jacket integrated and the shielding synthesization, and it can improve the reliability of the normal safe operation of using system.

The technical scheme that realizes above-mentioned purpose is: a kind of flexible conductor fire retardant jacket shields power cable, comprises inner sheath, screen and the oversheath of cable conductor, coating cable conductor, wherein,

Described cable conductor is two, and the outer surface of these two cable conductors is the coated insulation layer respectively;

Described screen comprise one by the multiply annealed copper wire with the wrapped annealed copper wire screen of stranded mode of pressing at the inner sheath outer surface, and one be wrapped in the Copper Foil band screen of annealed copper wire screen outer surface by the Copper Foil band with canoe.

Above-mentioned flexible conductor fire retardant jacket shielding power cable wherein, also is provided with one deck polyester film twining package tape between described Copper Foil band screen and the oversheath.

Above-mentioned flexible conductor fire retardant jacket shielding power cable, wherein, the material of described insulating barrier is cross-linked polyolefin or crosslinked polyethylene.

Above-mentioned flexible conductor fire retardant jacket shielding power cable, wherein, the material of described inner sheath and oversheath is low smoke, zero halogen high flame retardant polyolefin.

Above-mentioned flexible conductor fire retardant jacket shielding power cable, wherein, described every cable conductor is that the smart strand of soft circular copper wire of 0.4mm forms by many diameters.

Above-mentioned flexible conductor fire retardant jacket shielding power cable, wherein, the per share annealed copper wire on the described annealed copper wire screen by several diameters be the soft circular copper wire of 0.25mm stranded form and the sectional area of sub-thread annealed copper wire less than the sectional area of unit cable conductor; Described Copper Foil band is made by ultra-thin smart red copper foil.

Flexible conductor fire retardant jacket shielding power cable of the present utility model is compared with the power cable of prior art and is had the following advantages:

1) many changes of conductor copper cash---conductor softness, flexible, cable is also soft

2) insulating layer of conductor is painted non-halogen---insulate crosslinked after, temperature resistant grade is 90 ℃, improves 20 ℃ for 70 ℃ than the temperature resistant grade of existing product and causes ampacity to improve a lot.

3) owing to adopt earth shield integrated, the required copper material of using of these two functions is finished in the shield synthesization thus, can save 50%;

4) electric durability can be good, and every electricity function index can improve 14～30%;

5) cable is in the fire place, the nonflammable burning of maybe can slowing down, and it is few to discharge flue gas, Halogen gas, to personnel on the scene in order to escape with can reduce respiratory system greatly through damaged;

6), can obtain prolonging in the function of supplying power time of fire place cable because cable insulation is a flame retardant type.

Description of drawings

Fig. 1 is the sectional view of flexible conductor fire retardant jacket shielding power electricity of the present utility model.

Embodiment

In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:

See also Fig. 1, a kind of flexible conductor fire retardant jacket of the present utility model shields power cable, comprises insulating barrier 2, inner sheath 3, screen, polyester film twining package tape 5 and the oversheath 6 of cable conductor 1, coating cable conductor 1, wherein,

Cable conductor 1 is two, and every cable conductor is that the smart strand of soft circular copper wire of 0.4mm forms by many diameters;

The material of insulating barrier 2 is cross-linked polyolefin or crosslinked polyethylene, is coated on the outer surface of these two cable conductors 1 respectively;

Inner sheath 3 abuts against together and is coated on their periphery with two cable conductors 1 that are enclosed with insulating barrier 2, and the material of this inner sheath 3 is a low smoke, zero halogen high flame retardant polyolefin (LSZH-FR).

Screen comprises an annealed copper wire screen 41 and a Copper Foil band screen 42 that is wrapped in outer 3 surfaces of inner sheath successively, annealed copper wire screen 41 is wrapped at inner sheath 3 outer surfaces in stranded mode of pressing by 17 strands of annealed copper wires, this annealed copper wire screen 41 also can be used as earthing conductor and uses, per share annealed copper wire by several diameters be the soft circular copper wire of 0.25mm stranded form and the sectional area of sub-thread annealed copper wire less than the sectional area of unit cable conductor; Copper Foil band screen 42 is wrapped in the outer surface of annealed copper wire screen 41 by the Copper Foil band in the mode of twining, and the Copper Foil band is made by ultra-thin smart red copper foil;

Polyester film twining package tape 5 wrapped outer surfaces at Copper Foil band screen 42;

Oversheath 6 is wrapped in the outer surface of polyester twining package tape 5, and the material of this oversheath 6 is a low smoke, zero halogen high flame retardant polyolefin (LSZH-FR).

The characteristics of a kind of flexible conductor fire retardant jacket shielding power cable of the present utility model are:

1) many changes of cable conductor copper cash make conductor softness, flexible, and cable is also soft;

2) insulating barrier is painted non-halogen, and after insulating barrier was crosslinked, temperature resistant grade was 90 ℃, has improved 20 ℃ for 70 ℃ than the temperature resistant grade of existing product, causes the ampacity of cable to improve a lot;

3) earth shield is integrated, and the grounding function and the function of shielding of cable are finished by integrative-structure, can save rare metal copper, reduce cost;

4) inside and outside sheath is halogen-free type---and can make personnel's respiratory system on the scene reduce damage in the scene of fire;

5) inside and outside sheath is low cigarette type, and discharge flue gas in the fire place few, has certain visibility to be beneficial to escape.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims

1. a flexible conductor fire retardant jacket shields power cable, comprises inner sheath, screen and the oversheath of cable conductor, coating cable conductor, it is characterized in that,

2. flexible conductor fire retardant jacket shielding power cable according to claim 1 is characterized in that, also is provided with one deck polyester film twining package tape between described Copper Foil band screen and the oversheath.

3. flexible conductor fire retardant jacket shielding power cable according to claim 1 and 2 is characterized in that the material of described insulating barrier is cross-linked polyolefin or crosslinked polyethylene.

4. flexible conductor fire retardant jacket shielding power cable according to claim 1 and 2 is characterized in that the material of described inner sheath and oversheath is low smoke, zero halogen high flame retardant polyolefin.

5. flexible conductor fire retardant jacket according to claim 1 and 2 shielding power cable is characterized in that, described every cable conductor is that the smart strand of soft circular copper wire of 0.4mm forms by many diameters.

6. flexible conductor fire retardant jacket shielding power cable according to claim 1 and 2, it is characterized in that, the per share annealed copper wire on the described annealed copper wire screen by several diameters be the soft circular copper wire of 0.25mm stranded form and the sectional area of sub-thread annealed copper wire less than the sectional area of unit cable conductor; Described Copper Foil band is made by ultra-thin smart red copper foil.