CN207529708U - A kind of combined type fire-resisting cable - Google Patents

Abstract

The utility model discloses a kind of combined type fire-resisting cables, including supporting block, the second groove is provided on the outside of the supporting block, stranded conductor is equipped on the outside of the supporting block, the stranded conductor includes twisted copper core, insulating layer is cased on the outside of the twisted copper core, the first groove is provided on the inside of the electro-insulating rubber layer, first screen layer is equipped on the outside of the insulating layer, secondary shielding layer is equipped on the outside of the first screen layer, the first screen layer and secondary shielding layer, between be equipped with the second filled layer, electro-insulating rubber layer is equipped on the outside of the stranded conductor, steel wire floor is equipped on the outside of the electro-insulating rubber layer.First filled layer and the second filled layer position polypropylene material structure sheaf, there is good high temperature resistant, fire-retardant effect, oversheath also has good flame retardant effect with inner sheath, first screen layer and secondary shielding layer can stop the interference in twisted copper core magnetic field, steel wire floor then has the performance for cable being prevented to be broken off well, is suitble to promote the use of.

Description

A kind of combined type fire-resisting cable

Technical field

The utility model is related to field of cable technology, specially a kind of combined type fire-resisting cable.

Background technology

At present, with the rapid development of national economy, cable is widely used in various power stations, such as nuclear power station, thermal power station Deng and the various fields such as subway station, power plant, skyscraper building, military installations, oil platform in, therefore, people are to electricity The requirement of the quality and function of cable is also higher and higher；The halogen material of common cable generally use such as PVC insulating layers are as shield Jacket layer, structure is not close, it is crucial that once occur fire PVC insulated wire cable fire can generate it is a large amount of dense Cigarette so that rescue personnel and the disaster-stricken common people are often bottled up even death by suffocation by smog, are difficult to rescue work, rescue effect Rate is low, meanwhile, the burning of halogen material can generate a large amount of toxic gas again and pollute air；In addition, current cable feature On it is single be also required to change, so a kind of combined type fire-resisting cable is provided solve the above-mentioned problem very it is necessary to.

Utility model content

It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of combined type fire-resisting cable Problem.

To achieve the above object, the utility model provides following technical solution：A kind of combined type fire-resisting cable, including support Block, the supporting block outside are provided with the second groove, are equipped with stranded conductor on the outside of the supporting block, the stranded conductor includes strand Copper core is closed, insulating layer is cased on the outside of the twisted copper core, the first groove is provided on the inside of the insulating layer, is set on the outside of the insulating layer There is first screen layer, secondary shielding layer, the first screen layer and secondary shielding layer are equipped on the outside of the first screen layer, between Equipped with the second filled layer, electro-insulating rubber layer is equipped on the outside of the stranded conductor, steel wire floor, institute are equipped on the outside of the electro-insulating rubber layer It states and inner sheath is cased on the outside of steel wire floor, be cased with oversheath on the outside of the inner sheath, filled out between the supporting block and electro-insulating rubber layer Filled with the first filled layer.

Preferably, first groove and the second groove are circular groove.

Preferably, first filled layer and the second filled layer are polypropylene material.

Preferably, first groove is identical with the quantity of stranded conductor with the second groove.

Preferably, the inner sheath is low smoke, zero halogen irradiation cross-linking flame-retardant polyolefin sheath layer.

Preferably, the oversheath is epoxy resin adhesive film.

Compared with prior art, the beneficial effects of the utility model are：A kind of combined type fire-resisting cable of the utility model, knot Structure is novel, the setting for also having this multi-layer fire-retarded while having good high-temperature resistant result, even if being ignited to generate big Measuring toxic smog influences building internal staff escape.First filled layer and the second filled layer position polypropylene material structure sheaf, have Good high temperature resistant, fire-retardant effect, oversheath also have good flame retardant effect, first screen layer and the second screen with inner sheath The interference in twisted copper core magnetic field can be stopped by covering layer, and steel wire floor then has the performance for cable being prevented to be broken off well, is suitble to push away It is wide to use.

Description of the drawings

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model section structure diagram；

Fig. 3 is the utility model stranded conductor structure diagram.

In figure：1 supporting block, 2 stranded conductors, 3 electro-insulating rubber layers, 4 first filled layers, 5 steel wire floors, 6 inner sheaths, 7 are protected outside Set, 8 twisted copper cores, 9 insulating layers, 10 first screen layers, 11 second filled layers, 12 secondary shielding layers, 13 first grooves, 14 second Groove.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work All other embodiments obtained shall fall within the protection scope of the present invention.

- 3 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of combined type fire-resisting cable, including supporting block 1,1 outside of supporting block is provided with the second groove 14, and 1 outside of supporting block is equipped with stranded conductor 2, and the stranded conductor 2 wraps Twisted copper core 8 is included, twisted 8 outside of copper core is cased with insulating layer 9, and 9 inside of insulating layer is provided with the first groove 13, described 9 outside of insulating layer is equipped with first screen layer 10, and 10 outside of first screen layer is equipped with secondary shielding layer 12, first shielding Layer 10 and secondary shielding layer 12, between be equipped with the second filled layer 11,2 outside of the stranded conductor is equipped with electro-insulating rubber layer 3, described 3 outside of electro-insulating rubber layer is equipped with steel wire floor 5, and 5 outside of steel wire floor is cased with inner sheath 6, and 6 outside of inner sheath is cased with outer shield Set 7 is filled with the first filled layer 4 between the supporting block 1 and electro-insulating rubber layer 3.

First groove, 13 and second groove 14 is circular groove.First filled layer, 4 and second filled layer 11 be polypropylene material.11 polypropylene material structure sheafs of first filled layer 4 and the second filled layer have good resistance to height Temperature, fire-retardant effect.First groove 13 is identical with the quantity of stranded conductor 2 with the second groove 14.The inner sheath 6 is nothing The low cigarette irradiation cross-linking flame-retardant polyolefin sheath layer of halogen.The oversheath 7 is epoxy resin adhesive film.

Operation principle：A kind of combined type fire-resisting cable of the utility model, structure novel have good high-temperature resistant result There is this multi-layer fire-retarded setting simultaneously, escape even if being ignited will not generating a large amount of toxic smogs and influencing building internal staff It is raw.11 polypropylene material structure sheafs of first filled layer 4 and the second filled layer, there is a good high temperature resistant, fire-retardant effect, outside Sheath 7 also has good flame retardant effect with inner sheath 6, and first screen layer 10 and secondary shielding layer 12 can stop twisted copper core The interference in magnetic field, steel wire floor 5 then have the performance for cable being prevented to be broken off well, are suitble to promote the use of.

While there has been shown and described that the embodiment of the utility model, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case of the principle and spirit for not departing from the utility model, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (6)

1. a kind of combined type fire-resisting cable, including supporting block（1）, it is characterised in that：The supporting block（1）It is recessed that outside is provided with second Slot（14）, the supporting block（1）Outside is equipped with stranded conductor（2）, the stranded conductor（2）Include twisted copper core（8）, it is described Twisted copper core（8）Outside is cased with insulating layer（9）, the insulating layer（9）Inside is provided with the first groove（13）, the insulating layer（9） Outside is equipped with first screen layer（10）, the first screen layer（10）Outside is equipped with secondary shielding layer（12）, first shielding Layer（10）With secondary shielding layer（12）, between be equipped with the second filled layer（11）, the stranded conductor（2）Outside is equipped with electro-insulating rubber Layer（3）, the electro-insulating rubber layer（3）Outside is equipped with steel wire floor（5）, the steel wire floor（5）Outside is cased with inner sheath（6）, it is described Inner sheath（6）Outside is cased with oversheath（7）, the supporting block（1）With electro-insulating rubber layer（3）Between be filled with the first filled layer （4）.

2. a kind of combined type fire-resisting cable according to claim 1, it is characterised in that：First groove（13）With second Groove（14）It is circular groove.

3. a kind of combined type fire-resisting cable according to claim 1, it is characterised in that：First filled layer（4）With Two filled layers（11）For polypropylene material.

4. a kind of combined type fire-resisting cable according to claim 1, it is characterised in that：First groove（13）With second Groove（14）With stranded conductor（2）Quantity it is identical.

5. a kind of combined type fire-resisting cable according to claim 1, it is characterised in that：The inner sheath（6）It is low for Halogen Cigarette irradiation cross-linking flame-retardant polyolefin sheath layer.

6. a kind of combined type fire-resisting cable according to claim 1, it is characterised in that：The oversheath（7）For asphalt mixtures modified by epoxy resin Fat adhesive film.