CN212061984U

CN212061984U - Waterproof anti-cracking prefabricated branch flexible fireproof cable

Info

Publication number: CN212061984U
Application number: CN202021092887.9U
Authority: CN
Inventors: 崔天峰; 毛传岚; 李准; 魏英; 李森; 汪潇潇; 覃泓铭
Original assignee: Sichuan Xindian Cables Co ltd
Current assignee: Sichuan Xindian Cables Co ltd
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2020-12-01
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a waterproof and anti-cracking prefabricated branch flexible fireproof cable, which comprises a main cable and a branch cable, wherein the main cable and the branch cable are arranged in an insulating sleeve in a penetrating way, and one end of the branch cable is hinged on the main cable; the outer side of the insulating sleeve is sequentially provided with a shielding layer, a reinforcing layer, a heat insulating layer and a fireproof layer from inside to outside; the outer side wall of the reinforcing layer is provided with a plurality of grooves which penetrate through the axial direction along the circumferential direction, flexible steel wire ropes are arranged in the grooves, the side walls of the flexible steel wire ropes are abutted to the inner side wall of the heat insulation layer, the side walls of the grooves and the side walls of the flexible steel wire ropes are coated with mud green, and the mud green is filled between the reinforcing layer and the heat insulation layer. The utility model has the characteristics of waterproof, fire prevention, anti fracture, intensity are high while the compliance is good.

Description

Waterproof anti-cracking prefabricated branch flexible fireproof cable

Technical Field

The utility model relates to the technical field of cables, especially a waterproof anti-cracking flexible fireproof cable of prefabricated branch.

Background

The prefabricated branch cable is a continuous cable set prefabricated by a factory, conductors of the main cable and the branch cable are hinged at the specified position of the main cable and the requirement of the main cable, and then are connected in a compression mode through a C-shaped snap ring and are subjected to complete insulation treatment.

With the improvement of living standard and the progress of science and technology, people have higher and higher performance requirements on the prefabricated branch cable, but the functions of the existing prefabricated branch cable often cannot be combined with the characteristics of water resistance, fire resistance, cracking resistance, high strength and good flexibility, so that the requirements of people are difficult to meet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a good prefabricated branch cable of compliance simultaneously waterproof, fire prevention, anti fracture, intensity.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a waterproof anti fracture prefabricated branch flexible fireproof cable, includes main cable and branch cable that wears to locate in the insulating cover, branch cable's one end transposition is in on the main cable.

The outer side of the insulating sleeve is sequentially provided with a shielding layer, a reinforcing layer, a heat insulating layer and a fireproof layer from inside to outside.

The outer side wall of the reinforcing layer is provided with a plurality of grooves which penetrate through the axial direction along the circumferential direction, flexible steel wire ropes are arranged in the grooves, the side walls of the flexible steel wire ropes are abutted to the inner side wall of the heat insulation layer, the side walls of the grooves and the side walls of the flexible steel wire ropes are coated with mud green, and the mud green is filled between the reinforcing layer and the heat insulation layer.

Optionally, the shielding layer is formed by wrapping flexible steel wires, and the covering rate is not less than 80%.

Optionally, the reinforcing layer is graphitized carbon fiber.

Optionally, the fire-proof layer and the thermal insulation layer are ceramic silicon rubber.

Optionally, a sheath is arranged outside the fire-proof layer.

Optionally, the material of the sheath groove is butadiene acrylonitrile rubber.

Optionally, the outer side wall of the sheath is provided with a plurality of arc-shaped protrusions.

The utility model has the advantages of it is following: in the utility model, the outer side wall of the reinforcing layer is provided with a plurality of grooves running through the axial direction along the circumferential direction, and the grooves are internally provided with flexible steel wire ropes which have good flexibility while improving the strength; the lateral wall of flexible wire rope and the inside wall butt of insulating layer, the lateral wall of recess and flexible wire rope's the lateral wall coating have mud blue or green, and it has mud blue or green to fill between enhancement layer and the insulating layer, and mud blue or green can play waterproof anti effect of ftractureing, and through the inside wall butt of flexible wire rope and insulating layer, plays the supporting role, guarantees the stability of structure moreover. In addition, the fireproof layer and the heat insulation layer can play a role in fire prevention and heat insulation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a sectional view of a waterproof crack-resistant prefabricated branch flexible fireproof cable provided by the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

in the figure: the cable comprises a main cable 1, a branch cable 2, a 3-C-shaped snap ring, an insulating sleeve 4, a shielding layer 5, a reinforcing layer 6, a heat insulating layer 7, a fireproof layer 8, a flexible steel wire rope 9, a sheath 10 and an arc-shaped bulge 101.

Detailed Description

The technical solution in the embodiments of the present application is described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-2, a waterproof anti-cracking prefabricated branch flexible fireproof cable comprises a trunk cable 1 and a branch cable 2 which are arranged in an insulating sleeve 4 in a penetrating manner, wherein one end of the branch cable 2 is hinged to the trunk cable 1, and the hinged position is fixed through a C-shaped snap ring 3. The material of the insulating sleeve 4 can be selected from butadiene rubber, and it is worth explaining that the butadiene rubber has particularly excellent cold resistance and high elasticity and also has better aging resistance.

In this embodiment, the outer side of the insulating sleeve 4 is sequentially provided with a shielding layer 5, a reinforcing layer 6, a heat insulating layer 7 and a fireproof layer 8 from inside to outside.

In this embodiment, the shielding layer 5 is formed by wrapping flexible steel wires, the covering rate is not less than 80%, and good flexibility is maintained while a good shielding effect is achieved.

In this embodiment, the reinforcing layer 6 is made of graphitized carbon fibers, and the graphitized carbon fibers have the characteristics of high strength and high flexibility. The lateral wall of enhancement layer 6 is equipped with a plurality of axial recesses that run through along circumference, is equipped with flexible wire rope 9 in the recess, and the lateral wall of flexible wire rope 9 and the inside wall butt of insulating layer 7, the lateral wall of recess and wire rope's lateral wall coating have the mud blue or green, and it has the mud blue or green to fill between enhancement layer 6 and the insulating layer 7. The strength is improved by the arranged flexible steel wire rope 9, and meanwhile, the flexible steel wire rope has good flexibility; and the inner side wall of the heat insulation layer 7 is abutted through the flexible steel wire rope 9, so that the supporting effect is achieved, and the stability of the structure is ensured.

In this embodiment, the fire-proof layer 8 and the thermal insulation layer 7 are made of ceramic silicon rubber, and it should be noted that the ceramic silicon rubber is a high-molecular refractory material, and the ceramic silicon rubber is ablated by high-temperature flame to form a hard shell, and the shell can resist fire like ceramic, so as to play a role in fire prevention, and the thermal insulation layer 7 on the inner side of the fire-proof layer 8 can also play a role in thermal insulation. Before the ceramic silicon rubber is ablated by high-temperature flame, the mass density is lower, and the flexibility is higher, so that the quality of the whole cable is reduced, the cable is convenient to lay, and good flexibility can be kept.

In this embodiment, a sheath 10 is disposed outside the fireproof layer 8, and the material of the sheath 10 is nitrile rubber. It is worth to be noted that the nitrile rubber has good oil resistance, high wear resistance and high heat resistance, and the sheath 10 is made of nitrile rubber, so that the inner layer of the cable can be well protected.

In this embodiment, the outer side wall of the sheath 10 is provided with a plurality of arc-shaped protrusions 101, so that the wear resistance can be further improved, and the arc-shaped protrusions 101 and the sheath 10 are integrally formed.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a flexible fireproof cable of waterproof anti fracture prefabricated branch which characterized in that: the cable comprises a main cable (1) and a branch cable (2) which are arranged in an insulating sleeve (4) in a penetrating mode, wherein one end of the branch cable (2) is hinged to the main cable (1);

the outer side of the insulating sleeve (4) is sequentially provided with a shielding layer (5), a reinforcing layer (6), a heat insulating layer (7) and a fireproof layer (8) from inside to outside;

the outer side wall of the reinforcing layer (6) is provided with a plurality of grooves which penetrate through the axial direction along the circumferential direction, flexible steel wire ropes (9) are arranged in the grooves, the side walls of the flexible steel wire ropes (9) are abutted to the inner side wall of the heat insulation layer (7), the side walls of the grooves and the side walls of the flexible steel wire ropes (9) are coated with mud green, and the reinforcing layer (6) and the heat insulation layer (7) are filled with mud green.

2. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 1, wherein: the shielding layer (5) is formed by wrapping flexible steel wires, and the covering rate is not less than 80%.

3. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 1, wherein: the reinforcing layer (6) is made of graphitized carbon fibers.

4. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 1, wherein: the fireproof layer (8) and the heat insulation layer (7) are made of ceramic silicon rubber.

5. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 1, wherein: and a sheath (10) is arranged on the outer side of the fireproof layer (8).

6. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 5, wherein: the groove material of the sheath (10) is butadiene acrylonitrile rubber.

7. The waterproof crack-resistant prefabricated branch flexible fireproof cable according to claim 5, wherein: the outer side wall of the sheath (10) is provided with a plurality of arc-shaped protrusions (101).