CN208538511U

CN208538511U - A kind of fireproof cable

Info

Publication number: CN208538511U
Application number: CN201821031357.6U
Authority: CN
Inventors: 郑从相
Original assignee: GUANGDONG TIANHONG CABLE CO Ltd
Current assignee: GUANGDONG TIANHONG CABLE CO Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2019-02-22
Anticipated expiration: 2028-06-29

Abstract

The utility model discloses a kind of fireproof cables, belong to field of cable technology.It includes at least four electric main cable cores and a ground cable core, a belting layer is surrounded with outside the every electric main cable core and a ground cable core, an insulation inner restrictive coating is extruded with outside the belting layer, inorganic mineral layer is filled with outside the insulation inner restrictive coating, the inorganic mineral layer outer cladding one is successively coated with a metal sheath layer and a fire-retardant external sheath layer outside the mica belt by the mica belt of the wrapped formation of multiple layer refractory mica belt.When a fire using the anti-flammability of fire-retardant oversheath and protective metal shell is anti-oxidant, high abrasion is with dystectic characteristic; cable fire-proof three-level protective is realized by the high flame retardant of fire-resistant isinglass belt, inorganic mineral layer and the inner restrictive coating that insulate again, to protect cable normal use.

Description

A kind of fireproof cable

Technical field

The utility model relates to arrive field of cable technology, more particularly, to a kind of fireproof cable.

Background technique

According to statistics, in most of Fire Accidents for Buildings as electric fault it is circuit aging caused by partially account for about fifty percent with On.With the fast development of urbanization, the skyscraper in flourishing city is more next more, and fireproof cable used in building is increasingly By public attention, the cable fire-proof and fire retardancy laid in building is the powerful guarantee for promoting building fire protection performance, For the safety in utilization for guaranteeing cable, fire can play better fireproofing function when occurring, and guarantee that rescue aid and floor have The design of the energization of longer time, fireproof cable is just particularly important, and is come with regard to the existing part fireproof cable of current market It sees, to environment and human body with potentially hazardous, the small laying hardly possible of cable flexible radius in laid processes in manufacturing process Degree is big, generates a large amount of smog and other harmful substances when burning, causes secondary injury to human body.

Utility model content

For the deficiency for making up fireproof cable performance on existing market, a kind of fireproof cable provided by the utility model can Cable buckling performance is effectively promoted, harmful vapors are generated when reducing cable fire to the secondary injury of human body.

A kind of technical solution provided by the utility model are as follows: fireproof cable comprising at least four electric main cable cores and one Root ground cable core is surrounded with a belting layer outside the every electric main cable core and a ground cable core, squeezes outside the belting layer It is surrounded by an insulation inner restrictive coating.Inorganic mineral layer, the inorganic mineral layer outsourcing are filled with outside the insulation inner restrictive coating It is covered with the mica belt wrapped by multiple layer refractory mica belt, a metallic jacket layer and a resistance are successively coated with outside mica belt External sheath layer is fired, the protective metal shell is embossing copper sheath or embossing aluminum alloy sheath, and the double-deck fireproof design can be effective Guarantee fire condition when cable normal power-up.

Preferably, by twisting together between the every electric main cable core and a ground wire cable core.

Preferably, the every electric main cable core and a ground wire cable core are made of seven real copper conductors.

Preferably, the every electric main cable core and the wrapped belting layer of a ground cable core are heat-resistant fireproof nonwoven Layer of cloth.

Preferably, the insulation inner restrictive coating is ceramic low-smoke halogen-free polyolefin insulating layer, is produced under hot conditions Hard ceramic-like hard shell has extraordinary heat-insulated fire insulation effect, guarantees that cable core normal power-up uses.

Preferably, the fire-retardant external sheath layer is low-smoke non-halogen flame-retardant external sheath layer, and when burning will not issue toxic smog, It avoids causing secondary injury to human body.

The utility model beneficial effect is: by outer and interior equipped with fire-retardant external sheath layer, the metal sheath layer of embossing, mica tape The structures such as layer, inorganic mineral layer and ceramic low-smoke halogen-free polyolefin insulating layer, using fire-retardant external sheath layer with the gold of embossing Belong to the service life that it is permanent that its corrosion resistance of restrictive coating, waterproofness and wearability guarantee cable and passes through embossing in case of fire Metal sheath layer, mica belt, inorganic mineral layer and ceramic low-smoke halogen-free polyolefin insulating layer height insulate excellent fire prevention Performance multistage flameproof protection carried out to cable core, described its helicitic texture of embossing metal sheath layer effectively raises cable Buckling performance reduces the difficulty of cable laying.

In addition, in the prior art outside conductor compared with the fireproof cable of wrapped inorfil filler, the utility model The insulated cable of offer is due to having the fireprotection layer comprising minerals, there is no need to add inorfil filler, therefore, During production, fiber filaments are not had and are drifted in air, to will not have an impact to the health of operator.

Detailed description of the invention

Fig. 1 is the utility model layered structure schematic diagram.

Fig. 2 is the utility model cross section structure schematic diagram.

Fig. 3 is main line cable core enlarged structure schematic diagram.

In figure, the fire-retardant external sheath layer of 1-, 2- metal sheath layer, 3- mica layer, 4- inorganic mineral layer, 5- electric main cable Core, the ground 6- cable core, 501- insulate inner restrictive coating, 502- belting layer, 503- reality copper conductor.

Specific embodiment

The utility model is described further with reference to the accompanying drawings and embodiments.

As shown, a kind of fireproof cable comprising at least four electric main cable cores 5 and a ground cable core 6, it is described every Wrapped belting layer 502 outside 5 core of root electric main cable and a ground cable core 6, the belting layer 502 are extruded with an insulation outside Inner restrictive coating 501.Inorganic mineral layer 4 is filled with outside inner restrictive coating 501, the inorganic mineral layer 4 is coated with one by more The wrapped mica belt 3 of layer fireproof mica belt, it is fire-retardant outer that mica belt 3 is successively coated with a metallic jacket layer 2 and one outside Restrictive coating 1, the protective metal shell 2 are the embossing copper sheath perhaps embossing aluminum alloy sheath embossing copper sheath or embossing Aluminum alloy sheath ensure that cable has bigger bending radius, be convenient for cable laying operation.

Preferably, the every electric main cable core 5 and a ground wire cable core 6 closely surround into an annular.Preferably, institute Every electric main cable core 5 and a ground wire cable core 6 is stated to be made of seven real copper conductors.

Preferably, the every electric main cable core 5 and a wrapped belting layer 502 of ground cable core 6 are high temperature resistant Fire retardant nonwoven fabric layer.

Preferably, the insulation inner restrictive coating 501 is ceramic low-smoke halogen-free polyolefin insulating layer, can be given birth under hot conditions At hard ceramic-like hard shell, there is extraordinary heat-insulated fire insulation effect, guarantee principal point cable core 5 and the positive normal open of ground cable core 6 Electricity uses.

Preferably, the fire-retardant external sheath layer 1 is low-smoke non-halogen flame-retardant external sheath layer, and when burning will not give out toxic smoke Mist avoids causing secondary injury to human body.

Above description is only a kind of preferable embodiment of the utility model, It should be understood by those skilled in the art that The present utility model is not limited to the above embodiments, and the above embodiments and description only describe the utility model Principle, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes and improvements, these Changes and improvements are fallen within the scope of the claimed invention.The utility model requires protection scope is by appended right Claim and its equivalent thereof.

Claims

1. a kind of fireproof cable comprising at least four electric main cable cores and a ground cable core, it is characterised in that: every described It is surrounded with a belting layer outside electric main cable core and a ground cable core, is extruded with an insulation inner restrictive coating outside the belting layer, It is filled with inorganic mineral layer outside the insulation inner restrictive coating, the inorganic mineral layer outer cladding one is by multiple layer refractory mica tape The mica belt of the wrapped formation of layer, the mica belt are successively coated with a metal sheath layer and a fire-retardant external sheath layer, institute outside Stating metal sheath layer is embossing copper sheath or embossing aluminium alloy protecting jacket layer.

2. fireproof cable according to claim 1, it is characterised in that: the every electric main cable core and a ground wire cable Core closely surrounds into an annular.

3. fireproof cable according to claim 1, it is characterised in that: the every electric main cable core and a ground wire cable Core is made of seven real copper conductors.

4. fireproof cable according to claim 1, it is characterised in that the every electric main cable core and ground cable core it is outer around The belting layer of packet is heat-resistant fireproof nonwoven layer.

5. fireproof cable according to claim 1, it is characterised in that: the insulation inner restrictive coating is ceramic low smoke and zero halogen Polyolefin insulation layer.

6. fireproof cable according to claim 1, it is characterised in that: the fire-retardant external sheath layer is outside low-smoke non-halogen flame-retardant Restrictive coating.