CN207966508U - A kind of fireproof flexible cable - Google Patents

Abstract

The utility model provides a kind of fireproof flexible cable, including restrictive coating and several conductors and gasket for packing that are arranged inside restrictive coating, conductor is arranged around a gasket for packing with regular stranded mode, and a braiding layer is arranged in the external of restrictive coating, and braiding layer is that glass fiber yarn weaves.Conductor surrounds a core wire bundle strand by several fine wires, and the direction of bundle strand is identical as the direction of regular strand, and an insulating layer is arranged outside conductor.Insulating layer is Ceramic silicon rubber material, forms hard shell after burning, does not drip.A polytetrafluoroethylene (PTFE) twining package tape is arranged in the inner surface of the outside of conductor and gasket for packing, restrictive coating, to its protective effect of inner lead.It is both provided with gasket for packing between conductor, between conductor and polytetrafluoroethylene (PTFE) twining package tape, gasket for packing is twisted for glass fiber yarn, prevents conducting wire from winding mutually.Restrictive coating is Ceramic silicon rubber material, forms hard shell after burning, does not drip.

Description

A kind of fireproof flexible cable

Technical field

Originally practical to be related to field of cables more particularly to a kind of fireproof flexible cable.

Background technology

Fireproof cable common at present includes mainly the fireproof cable and Mica tape using magnesium oxide mineral insulation Fire-resisting cable directly coats fire proofing material, conductor is generally partially hard, is not suitable for heat safe mobile occasion and wants due to not insulating It asks.And the cable for coating fire proofing material needs construction in the environment of adiabatic drying just to can guarantee that connected cable does not occur event Barrier, once it makes moist, it is easy to cause to puncture between conductor, less serious case can not power, and short circuit, which occurs, for severe one leads to whole cable It burns, so, it is badly in need of good a heatproof higher, fire protecting performance, flexible, good mechanical property, service life length at present and can drops A kind of Ceramic silicon rubber insulating sheath fireproof flexible cable of low cost.

Utility model content

In order to achieve the above object, the utility model provides a kind of fireproof flexible cable, which is characterized in that including restrictive coating with And several conductors and the gasket for packing being arranged inside the restrictive coating, the conductor is around a gasket for packing with regular stranded mode A braiding layer is arranged in setting, the external of the restrictive coating, and the braiding layer is that glass fiber yarn weaves.

In some embodiments, one mica tape of the wrapped setting in the restrictive coating outer surface.

In some embodiments, the lapping direction of the mica tape is identical as the regular direction of lay of the conductor.

In some embodiments, the conductor surrounds a core wire bundle strand by several fine wires, the bundle strand Direction is identical as the direction of regular strand, and an insulating layer is arranged outside the conductor.

In some embodiments, the insulating layer is Ceramic silicon rubber material, forms hard shell after burning, no Drippage.

In some embodiments, the outside of the conductor and gasket for packing, the inner surface setting one of the restrictive coating Polytetrafluoroethylene (PTFE) twining package tape, to its protective effect of inner lead.

In some embodiments, it is both provided between the conductor, between conductor and polytetrafluoroethylene (PTFE) twining package tape Gasket for packing, the gasket for packing are twisted for glass fiber yarn, prevent conducting wire from winding mutually.

In some embodiments, the restrictive coating is Ceramic silicon rubber material, forms hard shell after burning, no Drippage.

By using the above technological means, it is made to have the advantages that compared with prior art：

(1) this programme uses restrictive coating and insulating layer of the heat safe Ceramic silicon rubber material as cable, the material With it is splendid prevent fires, fire-retardant, low cigarette, nontoxic, tasteless characteristic, there is good flexibility and elasticity and excellent moisture resistance And water absorption resistance, residue is hard ceramic shell after burning, and hard shell is not molten in fire hazard environment and do not drip, and is applicable in In any required fireproof place, firm protective effect is played during power transmission is unobstructed in the case where ensureing fire condition.

(2) mica tape is arranged in restrictive coating outer surface in the cable, effectively improves fire resistance property, ensures inner conductor in fire Normal work in the case of calamity.

(3) cable outermost layer uses the braiding layer of glass fibre material, due to the good insulating of glass fiber yarn, heat resistance By force, corrosion resistance is good, high mechanical strength, preferably increases the heat resistance and mechanical performance of cable.

(4) it is arranged at regular strand with gasket for packing using conductor inside cable, can significantly reduces the friction between conducting wire, is protected The rounding property of cable is demonstrate,proved, improves service life, and the outside of cable conductor and gasket for packing is wrapped is provided with polytetrafluoroethylene tape, Lapping direction is identical as the regular strand direction of conductor, effectively reduces the bending radius of circuit, increases the softness of cable.

Description of the drawings

Fig. 1 is the utility model cross section structure schematic diagram.

Label declaration

1- conductors, 2- insulating layers, 3- gasket for packings, 4-PTFE bands,

5- restrictive coatings, 6- mica tapes, 7- braiding layers.

Specific implementation mode

Further message is done below in conjunction with the drawings and specific embodiments to this programme to state, in conjunction with following explanation, this reality It will be apparent from novel feature and advantage, it should be noted that, attached drawing is all made of very simplified form and uses non-essence Accurate ratio, only to purpose that is convenient, lucidly aiding in illustrating the utility model embodiment.

A kind of fireproof flexible cable, including conductor 1, gasket for packing 3 and restrictive coating 5, the outer surface of conductor 1 are provided with one layer Insulating layer 2, four conductors 1 are twisted together with gasket for packing 3 by the way of regular strand, and PTFE is arranged around the outside later (polytetrafluoroethylene (PTFE)) band 4, and set gradually restrictive coating 5, mica tape 6 and braiding layer 7 in the outside of PTFE tape 4.

Referring to Fig. 1, being described further below to the utility model by taking four leader cables as an example, as shown in Figure 1, electric Cable includes four conducting wires, and each wire includes conductor 1 and the insulating layer 2 that is arranged outside conductor, and conductor 1 uses several The 6 class tinned copper wires of IEC60228 around a nylon filament carry out bundle strand, with prevent cable during movement and use due to Bending support turns or the reasons such as distortion cause cable conductor to be broken；By four conducting wires around a gasket for packing 3 using the side of regular strand Formula forms cable core, and winds PTFE tape 4 successively in the outside of cable core, and restrictive coating 5 is arranged, winds mica tape 6, braiding layer 7 is arranged. It should be appreciated that lead material and quantity are not limited to above-mentioned restriction, the good wire of other flexible conductive performances can also be used.

Specifically, winding direction and conductor 1 regular twisted direction one of the winding direction of mica tape 6 with PTFE tape 4 It causes, contributes to the bending radius for reducing cable.Insulating layer 2 and restrictive coating 5 outside conductor 1 are all made of heat safe ceramic SiClx Rubber material, have it is splendid prevent fires, be fire-retardant, low cigarette, nontoxic, tasteless characteristic, there is good flexibility and elasticity and excellent Different moisture resistance and water absorption resistance, residue is hard ceramic shell after burning, hard shell it is not molten in fire hazard environment and It does not drip, is suitable for any required fireproof place, ensure that power transmission is unobstructed in case of fire and play firm protection Effect.

Gasket for packing 3 using glass fibre be filled in the gap between conductor 1 after being twisted, and is not only able to make cable Structure more rounding, and cable can effectively reduce the frictional force between core wire and core wire in using bending process, it is anti-to stop loss Fracture caused by bad insulated hull and conductor stress.Braiding layer 7 using similar with 3 material of gasket for packing fiberglass braided, but High temperature resistant degree is higher than gasket for packing 3, and due to the good insulating of glass fiber yarn, heat resistance is strong, corrosion resistance is good, mechanical strength Height preferably increases the heat resistance and mechanical performance of cable.

Alternatively, the inside of PTFE tape 4 is only provided with a conducting wire, and conducting wire surrounds one using fine wire Root nylon filament bundle strand is formed, and in the outside of conducting wire around one PTFE tape 4 of setting, and it surrounds the bundle strand direction in direction and conducting wire Unanimously.Other structures are identical as a upper embodiment, and details are not described herein.

The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to The embodiment above, even if various changes can be made to the utility model, if these variations belong to the utility model claims And its within the scope of equivalent technologies, then still fall among the scope of protection of the utility model.

Claims (8)

1. a kind of fireproof flexible cable, which is characterized in that including restrictive coating and what is be arranged inside the restrictive coating several lead Body and gasket for packing, the conductor are arranged around a gasket for packing with regular stranded mode, and the external setting one of the restrictive coating is compiled Tissue layer, the braiding layer are that glass fiber yarn weaves.

2. a kind of fireproof flexible cable according to claim 1, which is characterized in that the wrapped setting in restrictive coating outer surface One mica tape.

3. a kind of fireproof flexible cable according to claim 2, which is characterized in that the lapping direction of the mica tape and institute It is identical to state the regular direction of lay of conductor.

4. a kind of fireproof flexible cable according to claim 1, which is characterized in that the conductor is enclosed by several fine wires Around a core wire bundle strand, the direction of the bundle strand is identical as the direction of regular strand, and an insulating layer is arranged outside the conductor.

5. a kind of fireproof flexible cable according to claim 4, which is characterized in that the insulating layer is Ceramic silicon rubber Material forms hard shell after burning, does not drip.

6. a kind of fireproof flexible cable according to claim 1, which is characterized in that the outside of the conductor and gasket for packing is set A polytetrafluoroethylene (PTFE) twining package tape is set, to its protective effect of inner lead.

7. a kind of fireproof flexible cable according to claim 1, which is characterized in that between the conductor, conductor and poly- four Gasket for packing is both provided between vinyl fluoride twining package tape, the gasket for packing is twisted for glass fiber yarn, prevents conducting wire from twining mutually Around.

8. a kind of fireproof flexible cable according to claim 1, which is characterized in that the restrictive coating is Ceramic silicon rubber Material forms hard shell after burning, does not drip.