CN205302987U

CN205302987U - Repeatedly usable's fire prevention flexible cable

Info

Publication number: CN205302987U
Application number: CN201520984969.7U
Authority: CN
Inventors: 张林锐; 程斌; 华健; 华洪彬
Original assignee: WUXI HUAMEI CABLE CO Ltd
Current assignee: WUXI HUAMEI CABLE CO Ltd
Priority date: 2015-12-02
Filing date: 2015-12-02
Publication date: 2016-06-08
Anticipated expiration: 2025-12-02

Abstract

The utility model discloses a repeatedly usable's fire prevention flexible cable, including the cable core that is formed by the transposition of three insulation core, packing inorganic mineral in cable core space department, the first heat -conduction barrier layer of crowded package outside the cable core separates the oxygen layer in the crowded closure formula of sealing of first heat -conduction barrier layer, is equipped with to form continuous interlocking armor through the interlocking armoring machine by the high melting metal area outside separating the oxygen layer, at outmost crowded packet of oversheath of cable core, insulation core by copper core conductor, in proper order silicone rubber insulating layer and the second heat -conduction barrier layer of crowded package outside copper core conductor constitute. This cable is equally soft with ordinary armoured cable, and technological structure is the same with ordinary basic cable, but cable of fixed length production, production, the installation non junction, the construction is simple, improves the reliability, reduces the input cost, 300mm2 can be produced to the multicore, not restricted by sectional external diameter, the cable use of can regenerating, if the chance circuit is rebuilded when adjusting, used repeatedly can be pulled down to the cable.

Description

A kind of reusable fireproof flexible cable

Technical field

This utility model relates to electric wire field, is specifically related to a kind of reusable fireproof flexible cable.

Background technology

Fire refers to the disaster that out of control burning causes over time and space. In various disasters, fire is the most often, one of the major casualty threatening public security and social development the most at large.

Along with the development of society, while the wealth of society is increasing, causing that the danger of breaking out of fire is also increasing, the hazardness of fire is also increasing. According to statistics, China's fire seventies annual is lost less than 2.5 hundred million yuan, and the fire annual eighties is lost less than 3.2 hundred million yuan. Entering the nineties, particularly since 1993, the direct property loss that fire causes rises to average annual tens00000000 yuan. Making an inventory according to Chinese fire protection, fire 39.5 ten thousand of being informed of a case the national whole year in 2014, dead 1817 people, injured 1493 people, direct property loss reaches 43.9 hundred million yuan. From statistical data, electrical fire accounts in fire 36.9%, and the economic loss caused accounts for 58.6%. Although the anoxia in fire, high temperature, flue dust, poisonous gas are the main causes of the harm person, but according to the reason statistical analysis caused casualties in fire, typically constitute from the 40%��50% of the total death toll of fire due to carbon monoxide poisoning death by suffocation or by the smoked the dead of other poison gas.

In order to save more life, property and information from the merciless scene of a fire, fireproof cable be applied to as the most important thing, and fireproof cable in the market can be divided into rigidity and flexible two kinds by architectural characteristic. Due to rigidity mineral insulated cable rigidity mineral insulated cable (MineralInsulatedCable) be called for short MI cable reliability, produce and lay in defect, quitting listing gradually in European and American developed countries, flexible mineral insulation fireproof cable becomes the main flow cable product of fire protection field. Flexible mineral insulation fireproof cable many employings Mica tape in the market forms insulating barrier on conductor, through stranding (70mm²Below), then apply copper sheath embossing, form in order to anticorrosion extrudes overcoat outside copper sheath.But this cable still has the disadvantage that

1, the easy moisture absorption of cable insulation structure;

2, installation needs joint adnexa, construction inconvenience;

3, due to copper sheath in the situation of heavy in section easy to crack, general production range is less than 70mm², the equal single in heavy in section produces, and it is big that workload is laid in construction.

Utility model content

In order to overcome the deficiencies in the prior art, it is provided that a kind of reusable fireproof flexible cable, this cable is equally soft with common armored cable, produces, and installs non junction, and construction is simple, improves reliability, reduces input cost.

For achieving the above object, this utility model provides a kind of reusable fireproof flexible cable, including by the stranded cable core of three insulated wire cores, inorganic mineral is filled in cable core gap, the first conduction of heat barrier layer is extruded outside cable core, extruding obturator formula oxygen barrier layer at the first conduction of heat barrier layer, be externally provided with in oxygen barrier layer and formed continuous print interlocking armor by refractory metal band through interlocking armoring machine, the outermost layer at cable core extrudes oversheath; Described insulated wire cores is by copper core conductor, be extruded in silicone rubber insulation layer outside copper core conductor and the second conduction of heat barrier layer is constituted successively.

Preferably, the first described conduction of heat barrier layer and the structure of the second conduction of heat barrier layer are identical, constitute by glass fibre belt.

Preferably, described oxygen barrier layer is extruded a kind of closure structure constituted by the halogen-free material of high oxygen index (OI), to being internally formed anaerobic environment, it is possible to effectively realize fire retardancy, and when there being Water spray, it is possible to effectively stop.

Preferably, described oversheath is extruded by flame retardant type low smoke, zero halogen material and forms.

The beneficial effects of the utility model are in that:

1, this cable adopts Ceramic silicon rubber to extrude and forms fine and close insulating barrier, insulate nonhygroscopic, it is ensured that electric property, additionally conduction of heat barrier layer is set outside insulation, the persistent period under flame can be greatly improved, cabling process applies inorganic mineral and fills, improve fire resistance;

2, adopt inorganic mineral to fill, reduce internal oxygen-containing space, improve flame retardant effect;

3, the halogen-free material of high oxygen index (OI) is adopted to extrude composition obturator, to being internally formed anaerobic environment, it is possible to effectively to realize fire retardancy, and when there being Water spray, it is possible to effectively stop;

4, refractory metal band is adopted to form continuous print interlocking armor through interlocking armoring machine, it is possible to prevent external mechanical damage first, second under flame, enough opposing burning times can be provided for inside, and for being internally formed the environment of anoxia, three when there being Water spray, it is possible to effectively stops;

5, adopting flame retardant type low smoke, zero halogen material to extrude to form, the internal each unit of protection is not by environmental damage, and improves the fire-retardant fireproof ability of cable body;

6, this cable is equally soft with common armored cable, and process structure is identical with common basic cable, can piece cable of production with fixed lengths, produce, non junction be installed, construction is simple, improves reliability, reduces input cost; Multicore can produce 300mm², not limited by cross-sectional outer diameter, the renewable use of cable, when adjusting such as track reconstruction, cable can be pulled down and reuse.

Accompanying drawing explanation

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

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, it is further elucidated with this utility model, it should be understood that these embodiments are merely to illustrate this utility model rather than limit scope of the present utility model, after having read this utility model, the amendment of the various equivalent form of values of the present utility model is all fallen within the application claims limited range by those skilled in the art.

As it is shown in figure 1, this utility model provides a kind of reusable fireproof flexible cable, including by the stranded cable core of three insulated wire cores, filling inorganic mineral 5 in cable core gap, decrease internal oxygen-containing space, improve flame retardant effect;Outside cable core, extrude the first conduction of heat barrier layer 4, extrude obturator formula oxygen barrier layer 3 at the first conduction of heat barrier layer 4, to being internally formed anaerobic environment, it is possible to effectively realize fire retardancy, and when there being Water spray, it is possible to effectively stop; It is externally provided with in oxygen barrier layer 3 and is formed continuous print interlocking armor 2 by refractory metal band through interlocking armoring machine, it is possible to prevent external mechanical damage first, second under flame, enough opposing burning times can be provided for inside, and for being internally formed the environment of anoxia, three when there being Water spray, it is possible to effectively stops; Outermost layer at cable core extrudes oversheath 1, protects internal each unit not by environmental damage, and improves the fire-retardant fireproof ability of cable body; Described insulated wire cores is by copper core conductor 8, be extruded in silicone rubber insulation layer 7 outside copper core conductor 8 and the second conduction of heat barrier layer 6 is constituted successively.

Cable after improvement is equally soft with common armored cable, and process structure is identical with common basic cable, can piece cable of production with fixed lengths, produce, non junction be installed, construction is simple, improves reliability, reduces input cost; Multicore can produce 300mm², not limited by cross-sectional outer diameter, the renewable use of cable, when adjusting such as track reconstruction, cable can be pulled down and reuse.

The above is only preferred implementation of the present utility model; it should be pointed out that, for the person of ordinary skill of the art, under the premise without departing from this utility model principle; can also making some modification and improvement, these also should be regarded as belonging to protection domain of the present utility model.

Claims

1. a reusable fireproof flexible cable, including by the stranded cable core of three insulated wire cores, it is characterized in that: fill inorganic mineral (5) in cable core gap, the first conduction of heat barrier layer (4) is extruded outside cable core, obturator formula oxygen barrier layer (3) is extruded at the first conduction of heat barrier layer (4), being externally provided with in oxygen barrier layer (3) and formed continuous print interlocking armor (2) by refractory metal band through interlocking armoring machine, the outermost layer at cable core extrudes oversheath (1); Described insulated wire cores is by copper core conductor (8), be extruded in the outer silicone rubber insulation layer (7) of copper core conductor (8) and the second conduction of heat barrier layer (6) is constituted successively.

2. reusable fireproof flexible cable according to claim 1, it is characterised in that: the first described conduction of heat barrier layer (4) is identical with the structure of the second conduction of heat barrier layer (6), constitutes by glass fibre belt.

3. reusable fireproof flexible cable according to claim 1, it is characterised in that: described oxygen barrier layer (3) is extruded a kind of closure structure constituted by the halogen-free material of high oxygen index (OI).

4. reusable fireproof flexible cable according to claim 1, it is characterised in that: described oversheath (1) is extruded by flame retardant type low smoke, zero halogen material and forms.