CN214226562U

CN214226562U - Flame-retardant signal cable for rail transit

Info

Publication number: CN214226562U
Application number: CN202023318045.3U
Authority: CN
Inventors: 沈小平; 肖伟; 林波; 高玺然; 游金涛
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a rail traffic flame-retardant signal cable, which is characterized in that the cable comprises a cable core formed by signal units, and a wrapping belt, an inner liner and an outer sheath which are sequentially wrapped outside the cable core; the signal unit comprises a conductor and an insulator, wherein the conductor is an annealed soft copper wire and is arranged in the copper pipe, and the insulator is a crosslinked polyethylene insulator and is extruded outside the copper pipe; the environment-friendly flame-retardant filling rope is used for filling when the cable core is cabled; the inner liner is low smoke and zero halogen oxygen barrier material, the oversheath adopts low smoke and zero halogen polyolefin sheath. The utility model adopts the special design of the cable and the use of special materials, which greatly improves the versatility of the cable and the capability of adapting to complex environment and severe environment; the flame-retardant coating is suitable for various complex environments with high flame-retardant requirements, requirements on rat resistance, ant resistance, ultraviolet resistance and the like.

Description

Flame-retardant signal cable for rail transit

Technical Field

The utility model belongs to the technical field of the cable is made, especially involve a rail is handed over and is used fire-retardant signal cable.

Background

The development of rail transit is more and more rapid, and the communication requirement of rail transit is more and more, so the requirements on the structure, the characteristics and the safety of the signal cable used in the communication of rail transit and the capability of adapting to the severe environment of complex environment are more and more high, and the structure of the conventional signal cable can not meet the requirements.

Disclosure of Invention

An object of the utility model is to provide a rail is handed over and is used fire-retardant signal cable, simple structure, and fire behaviour is good, has improved the versatility of cable and has adapted adverse circumstances's ability.

In order to achieve the above object, the technical solution of the present invention is that:

a rail transit flame-retardant signal cable comprises a cable core formed by signal units, and a wrapping belt, an inner liner and an outer sheath which are sequentially wrapped outside the cable core; the signal unit comprises a conductor and an insulator, wherein the conductor is an annealed soft copper wire and is arranged in the copper pipe, and the insulator is a crosslinked polyethylene insulator and is extruded outside the copper pipe; the environment-friendly flame-retardant filling rope is used for filling when the cable core is cabled; the inner liner is low smoke and zero halogen oxygen barrier material, the oversheath adopts low smoke and zero halogen polyolefin sheath.

Preferably, the conductor is a 99.9999% annealed oxygen-free flexible copper wire.

Further, the wrapping tape is made of alkali-free glass fiber tape.

Furthermore, the insulating tension of each environment-friendly flame-retardant filling rope is consistent.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model adopts the special design of the cable and the use of special materials, which greatly improves the versatility of the cable and the capability of adapting to complex environment and severe environment;

2. the utility model discloses be applicable to various to fire-retardant requirement than higher, require complex environments such as protection against rodents, protection against ants, ultraviolet protection.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Wherein:

1. a conductor; 2. A copper pipe;

3. insulating; 4. Filling;

5. wrapping belts; 6. An inner liner layer;

7. an outer sheath.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, 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 of ordinary skill in the art through specific situations.

In the description of the present invention, when a component is referred to as being "secured" to another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the utility model discloses specifically include the cable core that 5 signal units that are the circumference and distribute formed to and the band 5, inner liner 6, oversheath 7 of cladding in proper order outside the cable core.

The signal unit comprises a conductor 1 and an insulation 3 arranged outside the conductor 1, wherein the conductor 1 is a 99.9999% annealing oxygen-free flexible copper wire arranged in a copper pipe 2; the elongation of the annealed copper wire is controlled, and the roundness and the flexibility of the copper wire are ensured; the insulation 3 outside the copper pipe 2 is made of cross-linked polyethylene (XLPE), the cross-linked polyethylene is controlled by an insulation extrusion process and tightly extruded on the conductor 1, the section has no visible bubbles and impurities, the appearance is round and complete, the cross-linking is sufficient, and the insulation is easily stripped from the conductor 1;

the cabling process is controlled, and the filling 4 of the cable core adopts an environment-friendly flame-retardant filling rope, so that the insulation tension of each cable is consistent.

The cable core is wrapped with a low-smoke halogen-free wrapping tape 5;

the inner liner 6 extrudes a low-smoke halogen-free oxygen insulation material;

the outer sheath 7 is made of a low-smoke halogen-free polyolefin sheath, the extrusion process of the low-smoke halogen-free sheath is realized, a semi-extrusion type die is adopted, and direct extrusion wrapping is carried out, so that the gap filling of the cable core is ensured to be tight. The surface should be smooth and round, the color should be basically consistent, and the cross section should have no visible bubbles and impurities.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rail transit flame-retardant signal cable is characterized by comprising a cable core formed by signal units, and a wrapping tape, an inner liner and an outer sheath which are sequentially wrapped outside the cable core; the signal unit comprises a conductor and an insulator, wherein the conductor is an annealed soft copper wire and is arranged in the copper pipe, and the insulator is a crosslinked polyethylene insulator and is extruded outside the copper pipe; the environment-friendly flame-retardant filling rope is used for filling when the cable core is cabled; the inner liner is low smoke and zero halogen oxygen barrier material, the oversheath adopts low smoke and zero halogen polyolefin sheath.

2. The rail transit flame retardant signal cable of claim 1, wherein the conductor is a 99.9999% annealed oxygen free flexible copper wire.

3. The rail transit flame-retardant signal cable of claim 1, wherein the tape comprises alkali-free glass fiber tape.

4. The rail transit flame-retardant signal cable of claim 1, wherein each insulation tension of the environmentally-friendly flame-retardant filling rope is consistent.