CN219123003U

CN219123003U - Double-layer silica gel insulation anti-interference control cable for subway

Info

Publication number: CN219123003U
Application number: CN202223409196.9U
Authority: CN
Inventors: 李兴霞; 王伟; 牛瑞亮; 张旭; 房忠军; 杨才领
Original assignee: JIANGSU JIANGYANG CABLE CO Ltd
Current assignee: JIANGSU JIANGYANG CABLE CO Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-02
Anticipated expiration: 2032-12-20

Abstract

The utility model relates to a double-layer silica gel insulation anti-interference control cable for subways. The cable comprises a plurality of control wire cores, wherein each control wire core comprises a conductor and an insulating layer, the conductor is a plurality of tinned flexible copper conductors, the cable core is formed by wrapping flame-retardant wrapping tape outside the control wire cores, the flame-retardant wrapping tape is wrapped with a woven shielding layer in an extrusion mode, and the woven shielding layer is wrapped with an outer sheath in an extrusion mode. The utility model is suitable for the transmission control of the data signals of subway tracks and rolling stock, has the advantages of good electromagnetic interference resistance, low inherent attenuation, accurate data signal transmission and the like, and is widely applied to occasions needing electromagnetic interference resistance in subway facilities.

Description

Double-layer silica gel insulation anti-interference control cable for subway

Technical Field

The utility model relates to a data signal transmission control cable suitable for subway tracks and rolling stock, in particular to a double-layer silica gel insulation anti-interference control cable for subways.

Background

The control cable is a polyvinyl chloride insulated and polyvinyl chloride sheath control cable which is suitable for industrial and mining enterprises, energy traffic departments, control lines with the alternating current rated voltage below 450/750V and other occasions, the power cable is used for transmitting and distributing high-power electric energy in a main line of a power system, and the control cable directly transmits the electric energy to a power supply connecting line of various electric equipment from a distribution point of the power system.

The existing control cable cannot effectively protect the cable, the control cable can meet various conditions in the process of installation, wire-bonding and transportation of the control cable, the control cable can be bent to adapt to different wire-bonding conditions when the control cable is installed and wire-bonding, the control cable is easy to break optical fiber wires inside the control cable when subjected to external force, the control cable can be subjected to signal interference in different areas, and the control cable can also meet the influence of fire and personnel electric shock, so that the control cable cannot work normally.

Disclosure of Invention

The utility model aims to provide a double-layer silica gel insulation anti-interference control cable for subways, which is resistant to high temperature, oil, bending, abrasion, tensile and electromagnetic interference, so as to solve the problems in the prior art.

The technical scheme of the utility model is as follows: a double-layer silica gel insulation anti-interference control cable for subways comprises a plurality of control wire cores, wherein each control wire core comprises a conductor and an insulation layer, each conductor is a plurality of tinned flexible copper conductors, the plurality of control wire cores are externally wrapped with flame-retardant wrapping tape to form a cable core, the flame-retardant wrapping tape is externally wrapped with a woven shielding layer in an extrusion mode, and the woven shielding layer is externally wrapped with an outer sheath in an extrusion mode.

Preferably, the plurality of control wire cores are uniformly arranged in the cable core.

Preferably, the insulating layer is of a double-layer co-extrusion structure of inner insulation and outer insulation, the inner insulation is ceramic silicon rubber, and the outer insulation is high-strength high-flame-retardant silicon rubber.

Preferably, the braided shielding layer is a tinned copper wire braided shielding layer, and the braiding density is more than 90%.

Preferably, the outer sheath is a high-tearing-resistance silica gel outer sheath.

The beneficial effects of the utility model are as follows:

(1) The cable has good flexibility, moisture resistance and weather resistance, and meets the special installation and construction environment of subway engineering;

(2) The cable conductor strictly regulates and monitors the concentration of the wiredrawing liquid according to the process, and ensures that the surface of the copper wire is smooth, round, uniform and consistent and has no greasy dirt; when the conductor bundle is twisted, a process of annealing the bundle twisted conductor after the hard copper single wire bundle is twisted is adopted, so that the problems of influence of fluctuation of the outer diameter of the single wire and attenuation of the copper single wire in the bundle twisting process are solved;

(3) Through a double-layer co-extrusion insulating structure, the inner insulation is made of ceramic silicon rubber, and the outer insulation is made of high-strength and high-flame-retardance silicon rubber; the inner layer ensures the ceramic forming fire resistance and insulating property of the cable, the outer layer provides high-strength mechanical property, and meanwhile, the cable has flame retardant property and good comprehensive performance after being matched with the ceramic forming fire resistance and insulating property;

(4) The high-tear-resistance flame-retardant silicone rubber outer sheath with excellent hardness, tensile strength and scratch resistance is adopted to meet the laying mode of dragging the subway cable.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure, 1 is a conductor, 2 is an inner insulator, 3 is an outer insulator, 4 is a flame-retardant wrapping tape, 5 is a woven shielding layer, and 6 is an outer sheath.

Detailed Description

The utility model provides a double-deck silica gel insulation anti-interference control cable for subway, the cable include many control core, control core include conductor 1 and insulating layer 2, conductor 1 be a plurality of tinning flexible copper conductors, many control core outwards around the fire-retardant cable core that constitutes of band 4 of wrapping, fire-retardant around band 4 outwards crowded package braided shield layer 5, braided shield layer 5 outwards crowded package oversheath 6.

The plurality of control wire cores are uniformly arranged in the cable core.

The insulation layer is of a double-layer co-extrusion structure of an inner insulation layer 2 and an outer insulation layer 3, the inner insulation layer 2 is made of ceramic silicon rubber, and the outer insulation layer 3 is made of high-strength high-flame-retardance silicon rubber.

The braided shielding layer 5 is a tinned copper wire braided shielding layer, and the braiding density is more than 90%.

The outer sheath 6 is a high-tearing-resistance silica gel outer sheath.

The cable has good flexibility, moisture resistance and weather resistance, and meets the special installation and construction environment of subway engineering;

the cable conductor strictly regulates and monitors the concentration of the wiredrawing liquid according to the process, and ensures that the surface of the copper wire is smooth, round, uniform and consistent and has no greasy dirt; when the conductor 1 is stranded, a hard copper single wire bundle is adopted for stranding, and then the stranded conductor 1 is annealed, so that the problems of influence of fluctuation of the outer diameter of a single wire and attenuation of a copper single wire in the stranding process are solved;

the insulating layer adopts a double-layer co-extrusion insulating structure, the inner insulation 2 is ceramic silicon rubber, and the outer insulation 3 is high-strength and high-flame-retardant silicon rubber; the inner insulation 2 ensures the ceramic fire resistance and insulation performance of the cable, the outer insulation 3 provides high-strength mechanical performance and has flame retardant performance, and the cable have good comprehensive performance after being matched;

the high-tear-resistance flame-retardant silicone rubber outer sheath 6 with excellent hardness, tensile strength and scratch resistance is adopted to meet the laying mode of subway cable dragging.

The utility model is suitable for the transmission control of the data signals of subway tracks and rolling stock, has the advantages of good electromagnetic interference resistance, low inherent attenuation, accurate data signal transmission and the like, and is widely applied to occasions needing electromagnetic interference resistance in subway facilities.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and defined otherwise, for example, it may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Standard parts used by the utility model can be purchased from the market, and special-shaped parts can be customized according to the description of the specification and the drawings.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 double-deck silica gel insulation anti-interference control cable for subway which characterized in that: the cable include many control sinle silk, control sinle silk include conductor (1) and insulating layer, conductor (1) be a plurality of tinning flexible copper conductors, many control sinle silk outwards wrap fire-retardant around band (4) constitution cable core, fire-retardant around band (4) outer crowded package braided shield layer (5), braided shield layer (5) outer crowded package oversheath (6).

2. The double-layer silica gel insulation anti-interference control cable for subways according to claim 1, wherein the double-layer silica gel insulation anti-interference control cable for subways is characterized in that: the plurality of control wire cores are uniformly arranged in the cable core.

3. The double-layer silica gel insulation anti-interference control cable for subways according to claim 1, wherein the double-layer silica gel insulation anti-interference control cable for subways is characterized in that: the insulating layer is of a double-layer co-extrusion structure of an inner insulating layer (2) and an outer insulating layer (3), the inner insulating layer (2) is made of ceramic silicon rubber, and the outer insulating layer (3) is made of high-strength high-flame-retardant silicon rubber.

4. The double-layer silica gel insulation anti-interference control cable for subways according to claim 1, wherein the double-layer silica gel insulation anti-interference control cable for subways is characterized in that: the braided shielding layer (5) is a tinned copper wire braided shielding layer, and the braiding density is more than 90%.

5. The double-layer silica gel insulation anti-interference control cable for subways according to claim 1, wherein the double-layer silica gel insulation anti-interference control cable for subways is characterized in that: the outer sheath (6) is a high-tearing-resistance silica gel outer sheath.