CN213583227U

CN213583227U - High-voltage mineral insulated cable

Info

Publication number: CN213583227U
Application number: CN202023259720.XU
Authority: CN
Inventors: 李海涛; 李旭龙; 雷云东; 庄守福; 李秀丽
Original assignee: Liaoning Kangli Wire And Cable Co ltd
Current assignee: Liaoning Kangli Wire And Cable Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-06-29
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a high pressure mineral insulated cable relates to the technical field of cable, the utility model discloses aim at solving the problem of security performance, the utility model discloses a plurality of copper conductors and insulating layer, it is a plurality of the copper conductor bundles into a bundle, the insulating layer parcel is on the outer wall of a plurality of copper conductors, the material of insulating layer is the mixture of rubber and basalt powder, the outer wall of insulating layer is opened there are a plurality of first recesses, the inside coating of first recess has aluminium hydroxide coating. Through doping with the insulating department of basalt powder, can make the cable have incombustibility when having insulating properties, the aluminium hydroxide coating of coating in first recess simultaneously can make aluminium hydroxide absorb the heat when being heated and decomposing as fire retardant, produces high temperature resistant aluminium oxide and a large amount of vapor simultaneously, and the aluminium oxide covers at the isolated oxygen of combustible surface, and the concentration of oxygen around the combustible is reduced to a large amount of vapor of generation.

Description

High-voltage mineral insulated cable

Technical Field

The utility model relates to a technical field of cable specifically is a high-pressure mineral insulated cable.

Background

Fire-resistant cable means a cable that can be kept in operation safely for a certain period of time in the event of a flame burn. The fire-resistant cable is widely applied to places related to fire safety and fire-fighting lifesaving, such as high-rise buildings, underground railways, underground streets, large-scale power stations, important industrial and mining enterprises and the like, for example, power supply lines and control lines of emergency facilities, such as fire-fighting equipment, emergency guide lamps and the like.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned problem, solve the problem that above-mentioned background art provided promptly, the utility model provides a high pressure mineral insulated cable, including a plurality of copper conductors and insulating layer, it is a plurality of the copper conductor bundles into a bundle, the insulating layer parcel is on the outer wall of a plurality of copper conductors, the material of insulating layer is the mixture of rubber and basalt powder, the outer wall of insulating layer is opened there are a plurality of first recesses, the inside coating of first recess has aluminium hydroxide coating, the outer wall of insulating layer closely twines has the wire netting, and the wire netting is the fishing net form, the outer wall parcel of wire netting has the sheath, the inner wall of sheath is opened there are a plurality of second recesses.

The utility model discloses a further set up to: the first grooves are uniformly distributed on the outer wall of the insulating layer in a circumferential mode by taking the axis of the insulating layer as the center.

The utility model discloses a further set up to: the second grooves are uniformly distributed on the inner wall of the sheath in a circumferential manner by taking the axis of the sheath as a center.

The utility model has the advantages of: the insulating part doped with the basalt powder can ensure that the cable has incombustibility while having insulating property, meanwhile, the aluminum hydroxide coating coated in the first groove can ensure that the aluminum hydroxide as a flame retardant absorbs heat when being heated and decomposed, simultaneously, high-temperature resistant alumina and a large amount of water vapor are produced, the alumina covers the surface of the combustible to isolate oxygen, the generated large amount of water vapor reduces the concentration of oxygen around the combustible, meanwhile, the reaction can reduce the temperature, the combustible substances are not easy to reach the ignition point, the insulating layer can be tightly wrapped by the fishing net-shaped wire netting to increase the tensile and anti-cutting performance, the cable is prevented from being locally pulled and broken when being bent, through the cooperation of first recess and second recess, can provide the space for the local deformation inflation of rubber when the cable is crooked, can avoid the rubber part to receive extrusion deformation inflation and lead to breaking.

Drawings

Fig. 1 shows a schematic cross-sectional view of the present invention.

Reference numeral 1, copper conductor, 2, insulating layer, 3, first recess, 4, wire netting, 5, second recess, 6, sheath.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

The utility model provides a high-voltage mineral insulated cable, including a plurality of copper conductors 1 and insulating layer 2, a plurality of copper conductors 1 bundle into a bundle, insulating layer 2 wraps up on the outer wall of a plurality of copper conductors 1, the material of insulating layer 2 is the mixture of rubber and basalt powder, bundle into a bundle with a plurality of copper conductors 1 and then wrap up insulating layer 2 outside, insulating layer 2 is the rubber material that is doped with basalt powder, the incombustible performance has when playing the insulating role, can bear high temperature, the outer wall of insulating layer 2 is opened has a plurality of first recesses 3, a plurality of first recesses 3 are circumference evenly distributed on the outer wall of insulating layer 2 with the axis of insulating layer 2 as the center, the inside coating of first recess 3 has aluminium hydroxide coating, set up a plurality of first recesses 3 at the outer wall of insulating layer 2, the coating has aluminium hydroxide coating in the recess simultaneously, aluminium hydroxide absorbs the heat when being heated and decomposed as the fire retardant, simultaneously, high-temperature resistant alumina and a large amount of water vapor are produced, the alumina covers the surface of the combustible to isolate oxygen, the generated large amount of water vapor reduces the concentration of oxygen around the combustible, meanwhile, the reaction can reduce the temperature, the combustible substances are not easy to reach the ignition point, the wire netting 4 is tightly wound on the outer wall of the insulating layer 2, and wire netting 4 is the fishing net form, wire netting 5 of parcel is the fishing net form, can closely wrap up on the outer wall of insulating layer 2, stretch-proofing and the anti-cutting performance that can increase the cable, wire netting 4's outer wall parcel has sheath 6, the inner wall of sheath 6 is opened has a plurality of second recesses 5, a plurality of second recesses 5 use the axis of sheath 6 to be circumference evenly distributed on the inner wall of sheath 6 as the center, first recess 3 and second recess 5 can provide the space for the local deformation inflation of rubber when the cable is crooked, can avoid the rubber part to receive extrusion deformation inflation and lead to breaking.

A plurality of copper conductors 1 are bundled into a bundle, then an insulating layer 2 is wrapped outside, the insulating layer 2 is made of rubber material doped with basalt powder, the insulating layer has incombustible performance while playing an insulating role and can bear high temperature, a plurality of first grooves 3 are formed in the outer wall of the insulating layer 2, aluminum hydroxide coating is coated in the grooves, the aluminum hydroxide is used as a flame retardant and absorbs heat when being heated and decomposed, high-temperature-resistant aluminum oxide and a large amount of water vapor are produced simultaneously, the aluminum oxide is covered on the surface of a combustible to isolate oxygen, the generated large amount of water vapor reduces the concentration of oxygen around the combustible, the reaction can reduce the temperature, the combustible cannot easily reach an ignition point, a wrapped wire netting 5 is in a fishing net shape and can be tightly wrapped on the outer wall of the insulating layer 2, the stretch-resistant and cut-resistant performance of a cable can be improved, meanwhile, the first grooves 3 and the second grooves 5 can provide space for local deformation and expansion of rubber when the cable is bent, the rubber can be prevented from being locally crushed, deformed and expanded to cause fracture.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, various features shown in the various embodiments may be combined in any combination as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A high voltage mineral insulated cable comprising a plurality of copper conductors (1) and an insulating layer (2), a plurality of said copper conductors (1) being bundled, said insulating layer (2) being wrapped around the outer walls of the plurality of copper conductors (1), characterized in that: the material of insulating layer (2) is the mixture of rubber and basalt powder, the outer wall of insulating layer (2) is opened has a plurality of first recesses (3), the inside coating of first recess (3) has aluminium hydroxide coating, the outer wall of insulating layer (2) closely twines has wire netting (4), and wire netting (4) are fishing net shape, the outer wall parcel of wire netting (4) has sheath (6), the inner wall of sheath (6) is opened has a plurality of second recesses (5).

2. A high voltage mineral-insulated cable according to claim 1, characterized in that: the first grooves (3) are circumferentially and uniformly distributed on the outer wall of the insulating layer (2) by taking the axis of the insulating layer (2) as the center.

3. A high voltage mineral-insulated cable according to claim 1, characterized in that: the second grooves (5) are uniformly distributed on the inner wall of the sheath (6) in a circumferential manner by taking the axis of the sheath (6) as the center.