CN202839094U

CN202839094U - Flexible environment-friendly fire-proof cable

Info

Publication number: CN202839094U
Application number: CN 201220520764
Authority: CN
Inventors: 吕建国
Original assignee: WUXI MINGZHU CABLE CO Ltd
Current assignee: WUXI MINGZHU CABLE CO Ltd
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2013-03-27
Anticipated expiration: 2022-10-12

Abstract

The utility model discloses a flexible environment-friendly fire-proof cable which comprises a cable core. The cable core is formed by combination of a plurality of insulated wire cores in a hinged mode. Each insulated wire core is composed of a conductor, a conductor isolation belt coated outside the conductor in a squeezing mode and an insulation layer coated outside the conductor isolation belt in a squeezing mode. A filling layer is arranged on gap of the cable core. An isolation belt, an inner protection sleeve and a knit fastening layer are coated outside the cable core in a squeezing mode. An outer protection sleeve is coated on the outermost layer of the cable core. The flexible environment-friendly fire-proof cable is stable in structure, good in moving flexibility, good in heat insulation and fire resistance and free of halogen and poison.

Description

A kind of flexible environment friendly fireproof cable

Technical field

The utility model relates to the power cable field, refers to especially a kind of flexible environment friendly fireproof cable.

Background technology

Although wires and cables industry is a supporting industry just, in occupation of the output value of Chinese electrician trade 1/4.Its product category is numerous, range of application is very extensive, relate to the industries such as electric power, building, communication, manufacturing, all closely related with each department of national economy, the various motors of transmission of electric energy, transmission of information and manufacturing, instrument, instrument, realizing the indispensable basic equipment of electromagnetic energy conversion, is basic product necessary in electrification, the informationized society.

Electric wire is one of important channel of initiation fire, according to incompletely statistics, have among the dead personnel in the fire that causes because of electric wire in the fire that occurs 1/3rd be because the toxic gas death by suffocation that discharges when sucking the electric wire burning, the fire that is therefore caused by electric wire can not be ignored.The disaster that fire brings to the mankind is heavy, and loss is huge, and along with the development of economy and urban construction, fire damage is in rising trend, and therefore equal prevention of fires is very paid attention to both at home and abroad.How to stop the burning of electric wire, even gone back LSZH by the naked light burning, this is electric wire manufacturing one large problem.China is developing and is producing multiple fire-resistant, fire prevention and other all kinds of flame-proof environmental protection cables closely for many years.Cause the personnel death owing to produce a large amount of toxic and harmfuls during non-environment-friendly type cable fire, and equipment is undermined the harm that smog seriously makes personnel in time not withdraw, the user has proposed cable not only should have good fire resistance, and in the gas that produces after the burning without hydracid (pernicious gas), and the amount of being fuming is low, best should be that cable possesses fire prevention and fire-resistant function under fire condition, has developed thus that LSOH anti-flaming is fire-resistant, the fire-type environment-friendly cable.This class cable comprises power cable, control cables, optical cable, line for building and data cable, be used for key project and personnel and the intensive places of equipment such as underground railway, power station, chemical plant, ships, skyscraper, information industry, along with rapid economic development, new and high technology is constantly updated, product is to high-level development, and LSOH anti-flaming is fire-resistant, the kind of fire-type environment-friendly cable and quantity significantly increase is trend of the times.

Conventional electric wire is serious pollutant sources, and it can produce the public hazards such as a large amount of De bioxin, lead, halide when manufacturing, use and waste treatment.In recent years, Europe, the U.S. and Japan attach great importance to the public hazards relevant with electric wire, its government not only carries out strict restriction to the emission of cables manufacturing process, and the processing of scrapping cable implemented comprehensive monitoring, the material that forces cable factory's commercialization to meet environmental requirement replaces traditional material, Important building will ban use of polyvinyl chloride electrical wire and cable, a large amount of dense smokes when avoiding fire to occur, chlorine, cause more casualties, adopt low smoke, zero halogen cross-linking polyolefin insulation electric wire cable to become these regional local regulations, increase along with environmental consciousness, the application meeting of this class electric wire progressively enlarges, if it is fire-resistant to make cable have both LSOH anti-flaming, fire-proof function will be more welcome.

In recent years, all kinds of flame-retardants, fireproof cable that domestic many electric wire manufacturer develops, have following problem: a class is that flame retardant cable does not mainly produce smog and poisonous gas when the fire after-combustion from cable that passive angle is considered, in case be difficult to protect the integrality of cable inside body part during cable breaking out of fire burning, it is uninterrupted to guarantee that namely circuit is powered under fire condition; Another kind of fire-resisting cable mainly is that the conductor at cable adds one deck refractory material (mainly being mica tape), under high temperature sintering, generally is difficult to protect the Integrity And Reliability of cable insulation main part; Also having a class fireproof cable mainly is mineral insulated cable, and there is the manufacturing procedure height in this class cable, finished product puncture rate is high, shortage is corresponding flexible, is requiring flexible field of employment not adopt.

The utility model content

The technical problems to be solved in the utility model provides a kind of have Stability Analysis of Structures, mobile flexibility is good, heat-insulating flame-retardant is good, Halogen is nontoxic flexible environment friendly fireproof cable.

A kind of flexible environment friendly fireproof cable described in the utility model, comprise cable core, its cable core is to form by several insulated wire cores are stranded, is provided with packed layer at the gap location of cable core, outside cable core, extrude successively isolation strip, inner sheath, braiding fastened layer, extrude oversheath at the outermost layer of cable core.

Described insulated wire cores is four; Its insulated wire cores is by conductor, is extruded in the outer conductor isolation strip of conductor and the insulating barrier that is extruded in outside the conductor isolation strip consists of.

Described conductor by multifilament through restrainting stranded forming.

Described braiding fastened layer is quartz/resurrection glass fibre braid.

The beneficial effects of the utility model are:

1, cable conductor through restrainting stranded forming, has Stability Analysis of Structures, mobile soft characteristic by multifilament;

2, sheath adopts ceramic silicon rubber; this material have softness, Halogen, nontoxic, tasteless, human body, natural environment are had no adverse effects, the flue gas after the burning is very little, does not have smoke toxicity; to human body without injury; its maximum characteristic is exactly in the situation of fire, high temperature, can burn till hard ceramic-like duricrust protective layer, also has good insulating properties simultaneously; can play well isolated flame; the effect of fire-proof insulation, thus electric power, communication unimpeded guaranteed under fire condition.Its main performance index is---thermal insulation is good, and conductive coefficient 0.0033W/Mk forms hard ceramic-like armouring after particularly ablating and is cellular uniformly in inside simultaneously, has better fire resistance and thermal insulation; Good flame resistance, oxygen index is more than 32.

3, the braiding fastened layer adopts quartz/resurrection glass fibre to be woven in outside the sheath, and this material still keeps its physicochemical property under 1000 ℃, prevents that the housing behind the sheath calcination crust from coming off, with the integrality of protection cable conductor.

4, outer jacket adopts environment protection type polyurethane elastomer (TPE), has fire-retardant, soft, the wear-resisting and anti-characteristic of subduing.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment:

As shown in Figure 1, a kind of flexible environment friendly fireproof cable described in the utility model, comprise cable core, its cable core is to form by several insulated wire cores are stranded, gap location at cable core is provided with packed layer 4, outside cable core, extrude successively isolation strip 5, ceramic silicon rubber inner sheath 6, braiding fastened layer 7, extrude oversheath 8 at the outermost layer of cable core.Described insulated wire cores is by conductor 1, is extruded in the outer conductor isolation strip 2 of conductor 1 and is extruded in conductor isolation strip 2 outer insulating barriers 3 and consist of.

The utility model provides a kind of flexible environment friendly fireproof cable version and implementation method; the above only is preferred implementation method of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. flexible environment friendly fireproof cable, it is characterized in that: comprise cable core, its cable core is to form by several insulated wire cores are stranded, gap location at cable core is provided with packed layer (4), outside cable core, extrude successively isolation strip (5), inner sheath (6), braiding fastened layer (7), extrude oversheath (8) at the outermost layer of cable core.

2. flexible environment friendly fireproof cable according to claim 1, it is characterized in that: described insulated wire cores is four; Its insulated wire cores is by conductor (1), is extruded in the outer conductor isolation strip (2) of conductor (1) and is extruded in outer insulating barrier (3) formation in conductor isolation strip (2).

3. flexible environment friendly fireproof cable according to claim 1 and 2, its special type is: described conductor (1) by multifilament through restrainting stranded forming.

4. flexible environment friendly fireproof cable according to claim 1, it is characterized in that: described braiding fastened layer (7) is quartz/resurrection glass fibre braid.