CN217113861U

CN217113861U - High-temperature-resistant, fire-resistant and wear-resistant B1-level control flexible cable

Info

Publication number: CN217113861U
Application number: CN202220712492.7U
Authority: CN
Inventors: 田守纪; 余德平; 黄金坊; 林波
Original assignee: Zhejiang Wanma Co Ltd
Current assignee: Zhejiang Wanma Co Ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-02
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a high temperature resistant fire-resistant wear-resisting B1 level control flexible cable, including cable core and the protective layer that covers in the cable core outside, the cable core includes a plurality of sinle silks, and the every sinle silk outside is equipped with the insulating layer, the protective layer is equipped with thermal-insulated fire stopping layer, the thermal-insulated fire stopping layer outside is equipped with the steel wire weaving layer. The cable in the scheme has tensile strength, wear resistance, excellent fire resistance and excellent flame retardance under long-term use; the cable material is low in cost, and the use cost is reduced.

Description

High-temperature-resistant, fire-resistant and wear-resistant B1-level control flexible cable

Technical Field

The utility model relates to a cable especially relates to a high temperature resistant fire-resistant wear-resisting B1 level control flexible cable.

Background

The control cable is mainly used for instrument connection or signal transmission, if in high temperature occasions such as steel mills, foundries and the like, the use requirement can be met only by the high temperature resistant control cable, meanwhile, the cable is accompanied with the hidden danger of fire when in high temperature use, and the flame retardant and fire resistant functions of the cable can play the role when in real fire. The existing high-temperature-resistant fire-resistant flame-retardant control cable mostly adopts F46 or silicon rubber as insulation and a sheath, but F46 (fluorinated ethylene propylene) is easy to crack when being used as the sheath, the cable is hard and not easy to bend, the tear resistance of the silicon rubber insulation and the sheath is poor due to the small tensile strength of the silicon rubber insulation and the sheath, and the sheath and the insulation are easy to damage when the cable is used in a moving situation for a long time, so that the normal use of the cable is influenced, meanwhile, the F46 and the silicon rubber are both special materials and are expensive, and the use cost of a client can be increased if the cable is frequently replaced.

For example, chinese patent publication No. CN205920792U, published as 2017, 02/01, entitled "silicone rubber control cable", includes a sheath layer and a plurality of insulated wire cores; the sheath layer is sleeved outside the plurality of insulated wire cores; each insulated wire core comprises an insulating layer and a conductor; the insulating layer is sleeved outside the conductor; a wrapping layer is arranged between the sheath layer and the plurality of insulated wire cores, and a braided layer is arranged between the wrapping layer and the plurality of insulated wire cores; fillers are filled between the braided layer and the plurality of insulated wire cores; the sheath layer is made of silicon rubber.

The disadvantages of the prior patents are: (1) the existing control cable adopts silicon rubber as insulation and a sheath, and the silicon rubber has low tensile strength, so that the tear resistance is poor and the price is high; (2) the common control cable is not high temperature resistant, and the fire resistance, the flame retardant property and the wear resistance can not meet the special requirements of special occasions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that current control cable tensile strength is little, fire resistance, fire behaviour and wear resistance can not reach special occasion specific requirement, providing a high temperature resistant fire-resistant wear-resisting B1 level control flexible cable that tensile is wear-resisting, fire resistance are superior under long-term the use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high temperature resistant fire-resistant wear-resisting B1 level control flexible cable, includes the cable core and covers the protective layer in the cable core outside, the cable core includes a plurality of sinle silks, and the every sinle silk outside is equipped with the insulating layer, the protective layer is equipped with thermal-insulated fire stopping layer, the thermal-insulated fire stopping layer outside is equipped with the steel wire weaving layer. The cable takes KEVLAR (Kevlar) as a bearing tensile element of the cable, so that the tensile property of the cable is improved. The cable outside is woven and is had the steel wire weaving layer, and the steel wire weaving layer has not only increased the cable wear resistance and has also increased the shielding effect of cable simultaneously, and the steel wire is woven owing to be metal material, under the prerequisite of increasing the whole metal material of cable, has reduced the nonmetal content of cable, makes cable flame retardant property more superior.

Preferably, the wire core comprises a doubled KEVLAR and soft copper conductors, and the soft copper conductors and the doubled KEVLAR are stranded.

Preferably, the glass yarn is woven outside the insulating layer. The fine yarn of glass itself except having high temperature resistant flame retardant property, weave the fine yarn of glass and play fixed constraint effect to inside calcination mica tape, gather perfluor ethylene propylene around the package, make cable structure inseparabler, little play better fire-retardant fire-resistant effect with outside air area of contact at the in-process that fires the burning, the fine yarn of glass is around the package back, the sinle silk stranding. Adopt the fine yarn of glass to weave outside the insulating layer, under the prerequisite that increases cable fire behaviour, the cable core is compacter resistant crooked.

Preferably, the insulating layer comprises a calcined mica tape and a fluorinated ethylene propylene film which are sequentially wrapped from inside to outside. The insulating layer of cable does not adopt conventional plastics in this application, but adopt high temperature resistant and fire-resistant calcination mica tape and gather perfluor ethylene propylene film as the insulating layer of cable, it overlaps around the package in the wire core outside to calcine the mica tape, it is not less than 0.5mm around package thickness to calcine the mica tape, it gathers perfluor ethylene propylene insulating film around the package to calcine the mica tape outward, gather perfluor ethylene propylene film except the insulating properties who increases the cable, better high temperature resistant and humidity resistance in addition, because mica absorbs moisture easily, lead to insulation resistance to reduce, calcine mica tape and adopt the perfect solution of gathering perfluor ethylene propylene that the mica tape easily absorbs moisture and lead to the problem that insulation resistance reduces.

Preferably, the heat-insulating fire-blocking layer is made of double-layer lapped ceramic fire-resistant mica tapes. The cable core is wrapped with the ceramic fire-resistant mica tape, and when the cable core is burnt in fire or receives high temperature, the ceramic fire-resistant mica tape can play a role in protecting the cable core as a heat insulation and fire blocking layer.

Preferably, the density of the ceramic fire-resistant mica tape outer woven steel wire is not less than 85%. The steel wire has fire-blocking high-temperature resistance, tensile strength and wear resistance, and also has certain shielding effect. Meanwhile, the tightness of the cable is enhanced again by adopting steel wire weaving, so that the flame retardant property of the cable is further improved, and the flame retardant property of the cable completely meets the performance requirement of GB 31247.

Preferably, the glass fiber yarn weaving density is not less than 90%.

Preferably, the cable axis direction is equipped with the sinle silk, and all the other sinle silks are along cable axle center circumference evenly distributed.

The utility model has the advantages that: (1) the cable is tensile and wear resistant under long-term use, and has excellent fire resistance and flame retardance; (2) the cable material is low in cost, and the use cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: the cable comprises a steel wire braid layer 1, a doubled KEVLAR2, a soft copper conductor 3, a glass fiber yarn 4, a calcined mica tape 5, a fluorinated ethylene propylene film 6 and a ceramic fire-resistant mica tape 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

In the embodiment shown in fig. 1, a high temperature resistant, fire resistant and wear resistant B1 level control flexible cable comprises a cable core and a protective layer covering the outer side of the cable core, wherein the cable core comprises a plurality of cable cores, an insulating layer is arranged on the outer side of each cable core, a heat insulation fire blocking layer is arranged on the protective layer, and a steel wire woven layer 1 is arranged on the outer side of the heat insulation fire blocking layer. The cable takes KEVLAR (Kevlar) as a force-bearing tensile element of the cable, so that the tensile property of the cable is improved. The cable outside is woven and is had steel wire weaving layer 1, and steel wire weaving layer 1 has not only increased the cable wear resistance and has also increased the shielding effect of cable simultaneously, and the steel wire is woven owing to be metal material, under the prerequisite of increasing the whole metal material of cable, has reduced the nonmetal content of cable, makes cable flame retardant property more superior. The insulating layer comprises a calcined mica tape 5 and a fluorinated ethylene propylene film 6 which are sequentially wrapped from inside to outside. The insulating layer of cable does not adopt conventional plastics in this application, but adopt high temperature resistant and fire-resistant calcination mica tape 5 and gather the insulating layer of perfluor ethylene propylene film 6 as the cable, calcine 5 overlaps around the package in the core outside of mica tape, calcine 5 of mica tape and be not less than 0.5mm around package thickness, calcine 5 outer packages of mica tape and gather the perfluor ethylene propylene insulating film, it is except increasing the insulating properties of cable to gather perfluor ethylene propylene film 6, also better high temperature resistant and humidity resistance in addition, because mica absorbs moisture easily, lead to the insulation resistance to reduce, it adopts the perfect solution of gathering perfluor ethylene propylene to lead to the problem that insulation resistance reduces outward to calcine mica tape 5. The heat insulation and fire blocking layer adopts a double-layer overlapping wrapped ceramic fire-resistant mica tape 7. The cable core is wrapped with the ceramic fire-resistant mica tape 7, and when the cable core is burnt in fire or receives high temperature, the ceramic fire-resistant mica tape 7 can protect the cable core as a heat-insulating fire-blocking layer. The problems that the existing control cable adopts silicon rubber as insulation and a sheath, the tensile strength of the silicon rubber is low, the tear resistance of the existing control cable is poor, the existing control cable is expensive, the common control cable cannot resist high temperature, and the fire resistance, the flame retardant property and the wear resistance of the existing control cable cannot meet the specific requirements of special occasions are solved.

As shown in fig. 1, the wire core includes a doubled KEVLAR2 and a soft copper conductor 3, and a plurality of soft copper conductors 3 and a doubled KEVLAR2 bundle. The glass fiber yarn 4 is woven outside the insulating layer. The fine yarn 4 of glass itself except having high temperature resistant flame retardant property, weave fine yarn 4 of glass and play fixed constraint effect to inside calcination mica tape 5, gather perfluor ethylene propylene around the package, make cable structure inseparabler, little play better fire-retardant fire-resistant effect with outside air area of contact at the in-process that fires the burning, fine yarn 4 of glass winds the package after, the sinle silk is cabled. The insulating layer is woven by the glass fiber yarn 4, so that the cable core is more compact and bending resistant on the premise of increasing the flame retardant property of the cable.

As shown in FIG. 1, the density of the braided steel wires outside the ceramic fire-resistant mica tape 7 is not less than 85%. The steel wire has fire-blocking high-temperature resistance, tensile strength and wear resistance, and also has certain shielding effect. Meanwhile, the tightness of the cable is enhanced again by adopting steel wire weaving, so that the flame retardant property of the cable is further improved, and the flame retardant property of the cable completely meets the performance requirement of GB 31247. The weaving density of the glass fiber yarn 4 is not less than 90%. Cable axis direction is equipped with the sinle silk, and all the other sinle silks are along cable axle center circumference evenly distributed.

The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto. All equivalent changes made according to the shape and structure of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high temperature resistant fire-resistant wear-resisting B1 level control flexible cable, includes the cable core and covers the protective layer in the cable core outside, the cable core includes a plurality of sinle silks, and characterized by, every sinle silk outside is equipped with the insulating layer, the protective layer is equipped with thermal-insulated fire stopping layer, thermal-insulated fire stopping layer outside is equipped with steel wire weaving layer (1).

2. The high temperature resistant fire resistant abrasion resistant B1 grade control flexible cable according to claim 1, wherein the core comprises a doubled KEVLAR (2) and soft copper conductors (3), and the soft copper conductors and the doubled KEVLAR are stranded.

3. The high temperature resistant fire resistant abrasion resistant B1 grade control flexible cable according to claim 1, wherein the insulating layer is woven with glass fiber yarn (4) on the outside.

4. The high-temperature-resistant, fire-resistant and wear-resistant B1-grade control flexible cable as claimed in claim 1 or 3, wherein the insulating layer comprises a calcined mica tape (5) and a fluorinated ethylene propylene film (6) which are sequentially wrapped from inside to outside.

5. The high-temperature-resistant, fire-resistant and wear-resistant B1 grade control flexible cable as claimed in claim 1, wherein the heat-insulating and fire-blocking layer is a double-layer lapped ceramic fire-resistant mica tape (7).

6. The high temperature, fire and abrasion resistant B1 grade control flexible cable according to claim 5, wherein the density of the ceramic fire resistant mica tape outer woven steel wires is not less than 85%.

7. The high temperature, fire and abrasion resistant B1 grade control flexible cable according to claim 3, wherein the glass fiber yarn weaving density is not less than 90%.

8. The high-temperature-resistant, fire-resistant and wear-resistant B1-grade control flexible cable as claimed in claim 1, wherein cores are arranged along the axial direction of the cable, and the rest of the cores are uniformly distributed along the circumferential direction of the axial center of the cable.