CN-122026260-A - Cable protection sleeve

CN122026260ACN 122026260 ACN122026260 ACN 122026260ACN-122026260-A

Abstract

The application relates to the technical field of cable protection, in particular to a cable protection sleeve. The protection sleeve comprises an inner layer, an intermediate layer and an outer layer, wherein the intermediate layer comprises a first layer and a second layer, the first layer is fixedly connected with the inner layer, the second layer is fixedly connected with the outer layer, the first layer is made of a glass fiber reinforced composite material, the second layer is a grid framework structure made of a shape memory alloy material, the grid framework structure is embedded in the first layer, magnetorheological elastomers are filled in grid spaces inside the grid framework structure, the inner layer is a waterproof insulating layer sprayed on the first layer, the outer layer is made of a modified polyurethane material, the outer layer is of a corrugated structure, the cable protection sleeve is provided with an opening structure, sealing parts are arranged on two sides of the opening structure, the sealing parts on the two sides can be matched and abutted to enable an installation cavity of the inner layer to be sealed and isolated from the outside, the inner wall surface of the inner layer is made of a rubber material, the rubber supporting rings are arranged on the inner wall surface of the inner layer in a protruding mode, and the rubber supporting rings are provided with heat conducting grooves.

Inventors

GUO ZHENMING
GUO YINGYING
ZHU DONGJIE
WU YUQING
LIU FEI
WU GUODONG
ZHAO FENG
LIU XINYANG

Assignees

中核华辰建筑工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260414

Claims (8)

1. The cable protection sleeve is characterized by comprising an inner layer (1), an intermediate layer (2) and an outer layer (3) which are sequentially arranged from inside to outside, wherein the inner layer (1) is surrounded to form a mounting cavity (11) for accommodating a cable; The middle layer (2) comprises a first layer (21) and a second layer (22) which are sequentially arranged from inside to outside and are fixedly connected, the first layer (21) is fixedly connected with the inner layer (1), the second layer (22) is fixedly connected with the outer layer (3), the first layer (21) is made of glass fiber reinforced composite materials, the second layer (22) is a grid framework structure made of shape memory alloy materials, the grid framework structure is embedded in the first layer (21) at one side close to the first layer (21), and magnetorheological elastomers are filled in an inner grid space at one side, deviating from the first layer (21), of the grid framework structure; the inner layer (1) is a waterproof insulating layer sprayed on the surface of one side of the first layer (21) away from the second layer (22); The outer layer (3) is made of modified polyurethane, and the outer layer (3) is of a corrugated structure; The cable protection sleeve is axially extended and radially opened to an opening structure (100) of the mounting cavity, sealing parts (110) are arranged on two sides of the opening structure (100), and the sealing parts (110) on two sides of the opening structure (100) can be matched and abutted to seal and isolate the mounting cavity (11) of the inner layer (1) from the outside, wherein the sealing parts (110) are made of rubber; the inner wall surface of the inner layer (1) is provided with a plurality of rubber support rings (12) which are distributed at intervals along the axial direction of the cable protective sleeve, the rubber support rings (12) are protruded out of the inner wall surface of the inner layer (1), and each rubber support ring (12) is provided with a heat conducting groove (121).
2. The cable protection sleeve according to claim 1, wherein the number of the heat conducting grooves (121) is plural, and the heat conducting grooves are uniformly distributed circumferentially along the inner wall surface of the inner layer (1).
3. Cable protection sleeve according to claim 1, characterized in that the outer layer (3) is made of a modified polyurethane material doped with nanosilica.
4. Cable protection sleeve according to claim 1, characterized in that the corrugation height of the corrugated structure of the outer layer (3) is 3mm.
5. The cable protective sleeve according to claim 1, wherein the lattice framework of the second layer (22) is diamond-shaped lattice.
6. Cable protection sleeve according to claim 1, characterized in that the thickness of the inner layer (1) is 2mm, shore hardness 60±5HA.
7. The cable protective sleeve according to claim 6, wherein the content of silica gel in the inner layer (1) is 95% -98% by mass, the content of graphene heat conduction particles is 2% -5% by mass, and the sum of the mass percentages of the silica gel and the graphene heat conduction particles is 100%.
8. The cable protection sleeve according to claim 6, wherein along the extending direction of the cable protection sleeve, two side walls of the opening structure (100) are arranged in a tooth-shaped staggered fit.

Description

Cable protection sleeve Technical Field The application relates to the technical field of cable protection, in particular to a cable protection sleeve. Background The cable protection sleeve is used as an important protection component in the process of cable laying and use, is widely applied to scenes such as industrial construction, engineering construction and the like, and the performance of the cable protection sleeve directly influences the operation safety, stability and service life of the cable. The cable protection sleeve in the prior art is mainly prepared from single materials such as metal, hard plastic and the like, can realize the basic protection effect, but exposes a plurality of technical defects in practical engineering application, and is difficult to meet the use requirements of light weight, easy assembly and complex working condition adaptation; secondly, the existing protective sleeve is of an integrated closed pipe body structure, the existing protective sleeve is assembled with a cable in a penetrating way in an axial direction, namely, the cable is pulled by applying force to the cable, so that the cable is penetrated from one end to the other end along the axial direction of a hollow cavity of the sleeve, under the assembling way, the cable is easy to generate radial deflection and Zhou Xiangning torsion in the cavity, continuous friction is generated between the outer surface of the cable and the inner wall of the hollow cavity of the sleeve, the cable outer sheath is extremely easy to scratch and damage, insulation and structural integrity of the cable are affected, thirdly, the closed pipe body is tightly attached to the outer surface of the cable, a closed space formed between the closed pipe body and the cable prevents conduction and dissipation of heat such as joule heat in the electrified operation process of the cable, the heat is easy to accumulate in an attaching area, the transmission efficiency of the cable is reduced, the aging of the cable and sleeve material is accelerated, the overall service life is shortened, fourth, the conventional cable protective sleeve is poor in design of wear resistance, vibration resistance and sealing insulation performance, poor in environmental adaptability, and easy to crack and even failure of the surface and insulation performance are caused in severe working conditions such as vibration, dust abrasion, water splashing and the sleeve is easy to be immersed in engineering, and potential safety hazards such as cable short circuit, electric leakage and the like can be caused in severe cases. In summary, developing a cable protection sleeve which has the characteristics of light weight and easy assembly, and has excellent wear-resisting insulation performance, and is suitable for complex and severe working conditions such as construction sites, becomes a technical problem to be solved in the field. Disclosure of Invention In view of the above, the application provides a cable protection sleeve, which aims to solve the technical problems of heavy weight, high assembly difficulty, easy cable damage and poor wear-resistant insulation performance of the existing cable protection sleeve under severe working conditions. The application provides a cable protection sleeve, which comprises an inner layer, an intermediate layer and an outer layer which are sequentially arranged from inside to outside, wherein the inner layer is surrounded to form a mounting cavity for accommodating a cable; The middle layer comprises a first layer and a second layer which are sequentially arranged from inside to outside and fixedly connected, the first layer is fixedly connected with the inner layer, and the second layer is fixedly connected with the outer layer; the first layer is made of glass fiber reinforced composite materials, the second layer is a grid framework structure made of shape memory alloy materials, the grid framework structure is embedded in the first layer at one side close to the first layer, and magnetorheological elastomers are filled in grid spaces inside one side, deviating from the first layer, of the grid framework structure; the inner layer is a waterproof insulating layer sprayed on the surface of one side of the first layer, which is away from the second layer; the outer layer is made of modified polyurethane, and is of a corrugated structure; the cable protection sleeve is axially extended and radially opened to an opening structure of the mounting cavity, sealing parts are arranged on two sides of the opening structure, and the sealing parts on two sides of the opening structure can be matched and abutted to seal and isolate the mounting cavity of the inner layer from the outside; the inner wall surface of inlayer is equipped with a plurality of rubber support rings that distribute along cable protection sleeve axial interval, rubber support ring protrusion in the inner wall surface setting of inlayer, every the heat conduction gro