CN215835581U

CN215835581U - Special heat tracing cable for tunnel electric heat tracing

Info

Publication number: CN215835581U
Application number: CN202122076634.3U
Authority: CN
Inventors: 余章普; 李艳军
Original assignee: Hefei Youfu Thermal Energy Equipment Manufacturing Co ltd
Current assignee: Hefei Youfu Thermal Energy Equipment Manufacturing Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-15
Anticipated expiration: 2031-08-31

Abstract

The utility model discloses a special heat tracing cable for electric tracing of a tunnel, which comprises an inner sheath layer, wherein a connecting device is arranged inside the inner sheath layer. This special heat tracing cable of tunnel electric heat tracing, through the filler, the sinle silk, mutually support between fire-retardant layer and the insulating layer isotructure, can be through the filler with the rigidity of sinle silk, can make the stable work of sinle silk through fire-retardant layer and insulating layer, thereby the result of use of this device has been improved, through the metal armor, mutually support between oversheath layer and the metal mesh layer isotructure, can mutually support through metal armor and oversheath layer, strengthen the anti mechanical destruction ability of this device, prevent that outside sharp object from causing destruction to inside sinle silk etc., through the anticorrosion coating, mutually support between structures such as wearing layer and arc lug, can improve the ability of anticorrosion and the stand wear and tear ability of this device through anticorrosion coating and wearing layer, thereby the life of this device has been improved.

Description

Special heat tracing cable for tunnel electric heat tracing

Technical Field

The utility model relates to the technical field of cables, in particular to a special heat tracing cable for tunnel electric heat tracing.

Background

The cable is generally a cable similar to a rope formed by twisting several or several groups of wires (each group is at least two), each group of wires are mutually insulated and are usually twisted around a center, the whole outer surface is coated with a highly-insulated covering layer, the cable has the characteristics of internal electrification and external insulation, and various types of cables such as a heat tracing cable use the energy of electric heat to supplement the heat dissipated by a heat tracing body in the process flow so as to maintain the most reasonable process temperature of a flowing medium, and the cable is a high and new technical product.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special heat tracing cable for tunnel electric tracing, which aims to solve the problems that the heat tracing cable in the prior art is single and has poor use effect, which are proposed in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a special heat tracing cable for tunnel electric heat tracing comprises an inner sheath layer, wherein a connecting device is arranged inside the inner sheath layer;

the connecting device comprises a wire core, a flame-retardant layer and an insulating layer;

from top to bottom the sinle silk is located the inside on inner sheath layer, the outer wall of sinle silk is equipped with fire-retardant layer, and the inner wall on fire-retardant layer links to each other with the outer wall on inner sheath layer is fixed, the outer wall rigid coupling on fire-retardant layer has the insulating layer.

Preferably, a filler is processed between the inner sheath layer and the wire core, so that the position of the wire core can be fixed by the filler.

Preferably, a first protection device is installed on the outer wall of the insulating layer;

the first protection device comprises a metal armor layer, an outer sheath layer and a metal mesh layer;

the inner wall of the metal armor layer is fixedly connected with the outer wall of the insulating layer, the outer wall of the metal armor layer is fixedly connected with the outer sheath layer, the outer side of the metal armor layer is provided with the metal mesh layer, and the inner wall of the metal mesh layer is fixedly connected with the outer wall of the outer sheath layer.

Preferably, the outer sheath layer is the same as the inner sheath layer in material, so that the inner wire core can be better protected.

Preferably, the outer wall of the metal mesh layer is provided with a second protective device;

the second protective device comprises an anti-corrosion layer, a wear-resistant layer and an arc-shaped bump;

the anti-corrosion coating is located on the outer wall of the metal mesh layer, the inner wall of the anti-corrosion coating is fixedly connected with the outer wall of the metal mesh layer, the outer wall of the anti-corrosion coating is fixedly connected with the wear-resistant coating, and a plurality of arc-shaped convex blocks are processed on the outer wall of the wear-resistant coating.

Compared with the prior art, the utility model has the beneficial effects that: according to the special heat tracing cable for tunnel electric tracing, the filler, the wire core, the flame-retardant layer, the insulating layer and other structures are matched with each other, the position of the wire core can be fixed through the filler, and the wire core can stably work through the flame-retardant layer and the insulating layer, so that the using effect of the device is improved;

through the mutual matching among the structures such as the metal armor layer, the outer sheath layer, the metal net layer and the like, the mechanical damage resistance of the device is enhanced through the mutual matching of the metal armor layer and the outer sheath layer, and the damage of an external sharp object to an internal wire core and the like is prevented;

through the mutual matching among the structures such as the anti-corrosion layer, the wear-resistant layer, the arc-shaped convex blocks and the like, the anti-corrosion capability and the wear resistance of the device can be improved through the anti-corrosion layer and the wear-resistant layer, and therefore the service life of the device is prolonged.

Drawings

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

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural view of the core, inner jacket layer and flame retardant layer of FIG. 2;

fig. 4 is a schematic structural diagram of the arc-shaped bump, the corrosion prevention layer and the wear-resistant layer in fig. 2.

In the figure: 1. inner sheath layer, 2, filler, 3, connecting device, 301, sinle silk, 302, fire-retardant layer, 303, insulating layer, 4, first protector, 401, metal armor, 402, outer sheath layer, 403, metal mesh layer, 5, second inoxidizing coating, 501, anti-corrosion coating, 502, wearing layer, 503, arc lug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a special heat tracing cable for tunnel electric tracing comprises an inner sheath layer 1, the material of the inner sheath layer 1 is polyurethane resin, the interior of the device can be protected, the connecting device 3 is arranged in the inner sheath layer 1, the connecting device 3 comprises a wire core 301, a flame-retardant layer 302 and an insulating layer 303, the upper wire core 301 and the lower wire core 301 are positioned in the inner sheath layer 1, the flame-retardant layer 302 is arranged on the outer wall of the wire core 301, the inner wall of the flame-retardant layer 302 is fixedly connected with the outer wall of the inner sheath layer 1, the flame-retardant layer 302 is made of ceramic polyolefin material, thus, the wire core 301 can work stably, the outer wall of the flame-retardant layer 302 is fixedly connected with the insulating layer 303, the insulating layer 303 is made of silicon rubber, can play insulating effect, processing has filler 2 between inner sheath layer 1 and the sinle silk 301, and the material of filler 2 is the high temperature glass silk, can fix sinle silk 301 like this, prevents that sinle silk 301 from squinting.

First protector 4 is installed to the outer wall of insulating layer 303, first protector 4 includes metal armor 401, oversheath 402 and metal mesh layer 403, the inner wall of metal armor 401 links to each other with the outer wall of insulating layer 303 is fixed, the outer wall rigid coupling of metal armor 401 has oversheath 402, can strengthen anti mechanical damage ability through metal armor 401 and the cooperation of oversheath 402, prevent that outside sharp object from causing destruction to inside sinle silk 301 etc, the outside of metal armor 401 is equipped with metal mesh layer 403, and the inner wall of metal mesh layer 403 links to each other with the outer wall of oversheath 402 is fixed, the material of metal mesh layer 403 is woven for adopting the copper wire and forms, can prevent that the cable from receiving other transmission signal interference, oversheath 402 is the same with the material of inner sheath layer 1.

The second protection device 5 is installed to the outer wall of metal mesh layer 403, second protection device 5 includes anti-corrosion coating 501, wearing layer 502 and arc lug 503, anti-corrosion coating 501 is located the outer wall department of metal mesh layer 403, anti-corrosion coating 501's inner wall is fixed continuous with the outer wall department of metal mesh layer 403, the main material of anti-corrosion coating 501 is fluororubber, can increase corrosion protection, anti-corrosion coating 501's outer wall department rigid coupling has wearing layer 502, wearing layer 502 adopts the mixture of epoxy and carbon black piece, can provide certain abrasion resistance for the cable, the outer wall department processing of wearing layer 502 has a plurality of arc lugs 503, it is fixed to lead to the lug 503 through the arc like this can conveniently carry out the winding with this device.

In this embodiment, when an operator needs to use the heat tracing cable special for tunnel electric heat tracing, firstly, the operator adds the filler 2 between the inner sheath layer 1 and the core 301, the filler 2 is made of high-temperature glass fiber, so that the core 301 can be fixed, and the core 301 is prevented from shifting, the flame retardant layer 302 and the insulating layer 303 are processed on the outer wall of the inner sheath layer 1, the flame retardant layer 302 is made of ceramic polyolefin material, so that the core 301 can work stably, the insulating layer 303 is made of silicon rubber, so as to achieve an insulating effect, the outer wall of the insulating layer 303 is processed with the metal armor layer 401 and the outer sheath layer 402, the mechanical damage resistance can be enhanced by matching the metal armor layer 401 and the outer sheath layer 402, so as to prevent external sharp objects from damaging the inner core 301 and the like, meanwhile, the metal mesh layer 403 is processed on the outer wall of the outer sheath layer 402, and the metal mesh layer 403 is woven by copper wires, the cable can be prevented from being interfered by other transmission signals, and finally the corrosion-resistant layer 501 and the wear-resistant layer 502 are processed on the outer wall of the metal mesh layer 403, so that the corrosion resistance and the wear resistance of the cable can be improved, and the service life of the cable is longer.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special heat tracing cable of tunnel electric heat tracing, includes inner sheath layer (1), its characterized in that: a connecting device (3) is arranged in the inner sheath layer (1);

the connecting device (3) comprises a wire core (301), a flame-retardant layer (302) and an insulating layer (303);

from top to bottom sinle silk (301) are located the inside of inner sheath layer (1), the outer wall of sinle silk (301) is equipped with fire-retardant layer (302), and the inner wall of fire-retardant layer (302) links to each other with the outer wall of inner sheath layer (1) is fixed, the outer wall rigid coupling of fire-retardant layer (302) has insulating layer (303).

2. The special heat tracing cable for tunnel electric tracing according to claim 1, wherein: and a filler (2) is processed between the inner sheath layer (1) and the wire core (301).

3. The special heat tracing cable for tunnel electric tracing according to claim 1, wherein: a first protection device (4) is arranged on the outer wall of the insulating layer (303);

the first protection device (4) comprises a metal armor layer (401), an outer sheath layer (402) and a metal mesh layer (403);

the inner wall of the metal armor layer (401) is fixedly connected with the outer wall of the insulating layer (303), the outer wall of the metal armor layer (401) is fixedly connected with an outer sheath layer (402), a metal mesh layer (403) is arranged on the outer side of the metal armor layer (401), and the inner wall of the metal mesh layer (403) is fixedly connected with the outer wall of the outer sheath layer (402).

4. The special heat tracing cable for tunnel electric tracing according to claim 3, wherein: the outer sheath layer (402) and the inner sheath layer (1) are made of the same material.

5. The special heat tracing cable for tunnel electric tracing according to claim 3, wherein: a second protection device (5) is arranged on the outer wall of the metal mesh layer (403);

the second protection device (5) comprises an anti-corrosion layer (501), a wear-resistant layer (502) and an arc-shaped bump (503);

the anti-corrosion layer (501) is located on the outer wall of the metal mesh layer (403), the inner wall of the anti-corrosion layer (501) is fixedly connected with the outer wall of the metal mesh layer (403), the outer wall of the anti-corrosion layer (501) is fixedly connected with the wear-resistant layer (502), and a plurality of arc-shaped convex blocks (503) are processed on the outer wall of the wear-resistant layer (502).