CN211578451U

CN211578451U - Heat-insulation type double-insulation cable

Info

Publication number: CN211578451U
Application number: CN202020301506.7U
Authority: CN
Inventors: 张萍; 马林; 梁福秋
Original assignee: Anhui Tiankang Group Co Ltd
Current assignee: Anhui Tiankang Group Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-09-25
Anticipated expiration: 2030-03-11

Abstract

The utility model discloses a cable of thermal-insulated type double insulation, include: the cable core, the cable core includes a plurality of sinle silks, and every sinle silk all includes the conductor and wraps in proper order at the inner liner and the insulating layer of conductor periphery, wherein: the inner liner is made of glass fiber, and the glass fiber is of a hollow structure; and a ceramic particle attachment layer containing ceramic particles is attached to the inner wall of the insulating layer, and the ceramic particles in the ceramic particle attachment layer are hollow particles. The utility model discloses can effectively improve the heat transfer effect between each conductor to prevent the insulating layer thermal failure and the potential safety hazard that appears.

Description

Heat-insulation type double-insulation cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a cable of thermal-insulated type double insulation.

Background

In the power transmission process of the existing high-voltage power cable, the skin effect can occur to high-frequency current, so that the temperature of a conductor positioned on the periphery can be rapidly increased, an insulating layer positioned on the periphery of the conductor is easily damaged, the problem of insulation failure is easily caused, a plurality of wire cores are often arranged in the cable, and each wire core is provided with an independent conductor. Therefore, when the temperature of one conductor rises, the temperature of the conductor is quickly transferred to other conductors, so that the temperature rising speed inside the cable is multiplied.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem who exists among the background art, the utility model provides a cable of thermal-insulated type double insulation.

The utility model provides a pair of cable of thermal-insulated type double insulation, include: the cable core, the cable core includes a plurality of sinle silks, and every sinle silk all includes the conductor and wraps in proper order at the inner liner and the insulating layer of conductor periphery, wherein:

the inner liner is made of glass fiber, and the glass fiber is of a hollow structure; and a ceramic particle attachment layer containing ceramic particles is attached to the inner wall of the insulating layer, and the ceramic particles in the ceramic particle attachment layer are hollow particles.

Preferably, the cable further comprises a sheath coated on the periphery of the cable core, an outer attachment layer is attached to the outer wall of the sheath, and the outer attachment layer contains ceramic particles.

Preferably, the ceramic particles in the outer attachment layer are hollow particles.

Preferably, the outer periphery of the outer adhesion layer is brushed with a protective coating.

Preferably, the cable core further comprises a metal sheath which is located on the inner side of the sheath and covers the periphery of each wire core, and a through hole is formed in the outer wall of the metal sheath.

The utility model discloses in, set up inner liner and insulating layer through the periphery at the conductor to make the glass fiber in the inner liner be hollow structure, make the inner wall of insulating layer have ceramic particle adhesion layer, make the ceramic particle in the ceramic particle adhesion layer be hollow particle, thereby can effectively improve the heat transfer effect between each conductor, and ceramic material and glass material select for use can effectively strengthen along the effect, prevent insulating layer thermal failure and the potential safety hazard that appears.

Drawings

Fig. 1 is a schematic cross-sectional view of a heat insulation type double-insulated cable according to the present invention.

Detailed Description

The technical solution of the present invention will be described in detail by the following embodiments.

As shown in fig. 1, fig. 1 is a schematic cross-sectional view of a thermal insulation type double-insulated cable according to the present invention.

Referring to fig. 1, the utility model provides a cable of thermal-insulated type double insulation, include: the method comprises the following steps: the cable core, the cable core includes a plurality of sinle silks, and every sinle silk all includes conductor 1 and coats in proper order at inner liner 2 and insulating layer 3 in conductor 1 periphery, wherein:

the inner liner layer 2 is made of glass fibers, and the glass fibers are of a hollow structure; the inner wall of the insulating layer 3 is attached with a ceramic particle attaching layer 4 containing ceramic particles, the ceramic particles in the ceramic particle attaching layer 4 are hollow particles, so that the hollow structure of glass fibers and ceramic particles is utilized for reinforcement, and the insulating performance of the glass fibers and the ceramic particles is utilized for reducing the problem of short circuit caused by thermal failure of the insulating layer 3.

According to the above, the utility model discloses a periphery at conductor 1 sets up inner liner 2 and insulating layer 3 to make the glass fiber in the inner liner 2 be hollow structure, make the inner wall of insulating layer 3 have ceramic particle adhesion layer 4, make the ceramic particle in the ceramic particle adhesion layer 4 be hollow particle, thereby can effectively improve the heat transfer effect between each conductor 1, and ceramic material and glass material select for use can effectively strengthen along the effect, prevent insulating layer 3 thermal failure and the potential safety hazard that appears.

In addition, in this embodiment, the cable further includes a sheath 5 covering the periphery of the cable core, an outer adhesion layer 6 is adhered to the outer wall of the sheath 5, the outer adhesion layer 6 contains ceramic particles, and the structural design of the outer adhesion layer 6 can effectively enhance the wear resistance of the sheath 5.

In this embodiment, the ceramic particles in the outer adhesion layer 6 are hollow particles to form an insulating layer on the outer side of the sheath 5, so as to enhance the low temperature resistance of the sheath 5.

In this embodiment, the outer circumference of the outer adhesion layer 6 is brushed with a protective coating 7 to secure the adhesion capability of the outer adhesion layer 6.

In this embodiment, the cable core is still including being located 5 inboards of sheath and cladding at the metal sheath 8 of each sinle silk periphery, and is equipped with the through-hole on metal sheath 8's the outer wall to when insulating layer 3 melts, make the material that melts can get rid of through the through-hole, with the probability that reduces the cable burning.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An insulated double insulated cable, comprising: the cable core, the cable core includes a plurality of sinle silks, and every sinle silk all includes conductor (1) and cladding in proper order at inner liner (2) and insulating layer (3) of conductor (1) periphery, wherein:

the inner liner (2) is made of glass fiber, and the glass fiber is of a hollow structure; a ceramic particle attaching layer (4) containing ceramic particles is attached to the inner wall of the insulating layer (3), and the ceramic particles in the ceramic particle attaching layer (4) are hollow particles.

2. The insulated double-insulated cable according to claim 1, further comprising a sheath (5) covering the cable core, wherein an outer adhesion layer (6) is attached to the outer wall of the sheath (5), and the outer adhesion layer (6) contains ceramic particles.

3. A cable insulated from heat according to claim 2, characterized in that the ceramic particles in the outer adherent layer (6) are hollow particles.

4. A double insulated cable of the insulating type according to claim 2, characterized in that the outer circumference of the outer adhesion layer (6) is brushed with a protective coating (7).

5. The heat insulation type double-insulated cable according to claim 2, wherein the cable core further comprises a metal sheath (8) which is positioned inside the sheath (5) and covers the periphery of each wire core, and through holes are arranged on the outer wall of the metal sheath (8).