CN212750451U

CN212750451U - High-temperature-resistant mineral-insulated high-flexibility cable without metal sheath

Info

Publication number: CN212750451U
Application number: CN202021979914.4U
Authority: CN
Inventors: 郭运成; 袁宗宝; 鲍旭鹏; 郑锚; 郑培
Original assignee: Sichuan Xingchuantai Cable Co ltd
Current assignee: Sichuan Xingchuantai Cable Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-03-19
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses a high-temperature-resistant mineral-insulated high-flexibility cable without a metal sheath, which comprises a plurality of insulated wire cores and a protective outer layer, wherein the protective outer layer is wrapped outside the insulated wire cores; the insulating cable comprises an insulating core and a protective outer layer, wherein a ceramic heat-conducting silica gel filling layer is arranged between the insulating core and the protective outer layer, the insulating core comprises a conductor, a mica tape and a fluorinated ethylene propylene insulating moisture-proof layer, the problems that an insulating layer of the existing mineral insulating cable is easy to absorb water and damp, the bending radius of the cable is large, the installation and bending are difficult and the like are effectively solved, the operating temperature of the cable is greatly increased, the maximum temperature allowed by the conductor in normal operation is 200 ℃, the main materials of the high-temperature-resistant mineral insulating high-flexibility cable are all composed of inorganic minerals or mineral compounds, and the high-temperature-resistant mineral insulating; even if the flame retardant coating is used under the flame condition, the flame retardant coating can also play a normal power transmission function, and the flame retardant and fireproof functions and the high temperature resistance are improved.

Description

High-temperature-resistant mineral-insulated high-flexibility cable without metal sheath

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to high gentle cable of no metal sheath high temperature resistant mineral insulation.

Background

At present, the traditional electric wires and cables are all made of organic polymer materials, so the electric wires and cables are easy to carbonize under the flame condition and lose the insulating effect. The traditional rigid mineral insulated cable and the mineral insulated flexible fireproof cable with the metal sheath layer have the defects of high processing difficulty, short production length, more joints, high installation difficulty, high cost, difficulty in improving efficiency and the like. In various high-rise buildings with large flow of people, the cable is required to have fireproof performance. Current no high flexible fireproof cable of metal sheath layer is in the use, and when the cable circular telegram, conductor itself can produce the heat, and because the setting of multilayer protection for the heat is difficult to give off, leads to the high temperature of conductor, all can cause the influence to the performance such as mechanical strength and insulating nature of cable. How to solve the above problems becomes a concern in the cable technology industry today.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high gentle cable of no metal sheath high temperature resistant mineral insulation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature-resistant mineral-insulated high-flexibility cable without a metal sheath comprises a plurality of insulated wire cores and a protective outer layer, wherein the protective outer layer is wrapped outside the insulated wire cores; the insulation core and the protection skin between be provided with ceramic heat conduction silica gel filling layer, insulation core includes conductor and mica tape and gathers the insulating dampproof course of perfluor ethylene propylene, the protection skin is by interior to exterior in proper order including gathering perfluor ethylene propylene oxygen insulation fire prevention tape layer, silicon fiber weaving outsourcing flame retardant coating, ceramic silicon rubber insulating layer and the fire-retardant silicon rubber protective layer of low smoke and zero halogen.

Preferably, the conductor may be a round or profiled copper and annealed copper wire core.

Preferably, a plurality of the insulated wire cores are distributed in the protective outer layer at equal angles.

The thicknesses of the fluorinated ethylene propylene oxygen-insulating fireproof belt layer, the silicon fiber woven outer wrapping fireproof layer and the ceramic silicon rubber heat-insulating layer are kept consistent.

Preferably, the outer surface of the low-smoke halogen-free flame-retardant silicone rubber protective layer is provided with anti-skid fine lines.

Compared with the prior art, the beneficial effects of the utility model are that: the problems that an insulating layer of the existing mineral insulated cable is easy to absorb water and damp, the cable is large in bending radius, difficult to install and bend and the like are effectively solved, the running temperature of the cable is greatly improved, the maximum temperature allowed by a conductor in normal running is 200 ℃, main materials of the high-temperature-resistant mineral insulated high-flexibility cable are all composed of inorganic minerals or mineral compounds, and the high-temperature-resistant mineral insulated high-flexibility cable cannot cause fire and cannot burn or support combustion; even if the flame retardant coating is used under the flame condition, the flame retardant coating can also play a normal power transmission function, and the flame retardant and fireproof functions and the high temperature resistance are improved.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

in the figure: 1. a conductor; 2. mica tapes; 3. a polyfluorinated ethylene propylene insulating moisture-proof layer; 4. a ceramic heat-conducting silica gel filling layer; 5. a fluorinated ethylene propylene oxygen-insulating fireproof belt layer; 6. weaving silicon fiber and wrapping a fireproof layer; 7. a ceramic silicon rubber heat insulation layer; 8. a low-smoke halogen-free flame-retardant silicone rubber protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, the present invention provides a technical solution: a high-temperature-resistant mineral-insulated high-flexibility cable without a metal sheath comprises a plurality of insulated wire cores and a protective outer layer, wherein the protective outer layer is wrapped outside the insulated wire cores; be provided with ceramic heat conduction silica gel filling layer 4 between insulation core and the protection skin, insulation core includes conductor 1 and mica tape 2 and gathers perfluor ethylene propylene insulating dampproof course 3, and the protection skin is by interior to exterior in proper order including gathering perfluor ethylene propylene oxygen-insulated fire prevention tape layer 5, silicon fiber weave outsourcing flame retardant coating 6, ceramic silicon rubber insulating layer 7 and low smoke and zero halogen fire-retardant silicon rubber protective layer 8.

In this embodiment, the conductor 1 may preferably be a round or profiled copper and annealed copper wire core.

In this embodiment, preferably, a plurality of insulation wire cores are equiangularly distributed in the outer inside of protection, in order to guarantee overall stability.

In the embodiment, the thicknesses of the fluorinated ethylene propylene oxygen-insulating fireproof belt layer 5, the silicon fiber woven outer-wrapping fireproof layer 6 and the ceramic silicon rubber heat-insulating layer 7 are preferably kept consistent, so that good barrier performance is ensured.

In this embodiment, preferably, the outer surface of the low-smoke halogen-free flame-retardant silicone rubber protective layer 8 is provided with anti-slip fine lines to play a role of anti-slip.

The utility model discloses a theory of operation and use flow: the ceramic heat-conducting silica gel filling layer 4 is respectively contacted with the fluorinated ethylene propylene insulating moisture-proof layer 3 and the fluorinated ethylene propylene oxygen-insulating fire-proof belt layer 5 from inside to outside, so that heat on the fluorinated ethylene propylene insulating moisture-proof layer 3 can be rapidly conducted to the fluorinated ethylene propylene oxygen-insulating fire-proof belt layer 5, and the function of rapid heat dissipation is realized; a silicon fiber woven outer-wrapped fireproof layer 6 is arranged between the fluorinated ethylene propylene oxygen-insulating fireproof belt layer 5 and the ceramic silicon rubber heat-insulating layer 7, and the silicon fiber woven outer-wrapped fireproof layer 6 has good flame retardant property, can realize the heat-insulating and fire-blocking effects and ensures that heat of the cable does not enter the cable under the flame condition; as the main materials of the high-temperature-resistant mineral-insulated high-flexibility cable are all composed of inorganic minerals or mineral compounds, the high-temperature-resistant mineral-insulated high-flexibility cable cannot cause fire and cannot burn and support combustion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high-temperature-resistant mineral-insulated high-flexibility cable without a metal sheath comprises a plurality of insulated wire cores and a protective outer layer, wherein the protective outer layer is wrapped outside the insulated wire cores; the method is characterized in that: be provided with ceramic heat conduction silica gel filling layer (4) between insulation core and the protection skin, insulation core includes conductor (1) and mica tape (2) and gathers perfluor ethylene propylene insulating dampproof course (3), the protection skin is by interior to outer including gathering perfluor ethylene propylene oxygen insulation fire prevention tape layer (5), silicon fiber weaving outsourcing flame retardant coating (6), ceramic silicon rubber insulating layer (7) and low smoke and zero halogen fire-retardant silicon rubber protective layer (8) in proper order.

2. The high temperature resistant mineral insulated high flexibility cable without metal sheath of claim 1, characterized in that: the conductor (1) may be a round or profiled copper and annealed copper wire core.

3. The high temperature resistant mineral insulated high flexibility cable without metal sheath of claim 1, characterized in that: and a plurality of the insulated wire cores are distributed in the protective outer layer at equal angles.

4. The high temperature resistant mineral insulated high flexibility cable without metal sheath of claim 1, characterized in that: the thicknesses of the fluorinated ethylene propylene oxygen-insulating fireproof belt layer (5), the silicon fiber woven outer wrapping fireproof layer (6) and the ceramic silicon rubber heat-insulating layer (7) are kept consistent.

5. The high temperature resistant mineral insulated high flexibility cable without metal sheath of claim 1, characterized in that: the outer surface of the low-smoke halogen-free flame-retardant silicone rubber protective layer (8) is provided with anti-skid fine lines.