Composite flame retardant cable

Abstract

To provide a composite flame retardant cable that reduces friction and wear between cable cores and extends the overall service life of the cable. [Solution] The composite flame-retardant cable includes at least three cable cores 1 and a separator, wherein the separator has at least three interconnected arc-shaped segments, with adjacent arc-shaped segments overlapping each other, and the arc-shaped segments include an isolation unit 3 that houses the cable cores, and a protection unit 2 that covers the outer periphery of the isolation unit and includes, in order from the inside to the outside, a composite layer, a thermally conductive layer and an abrasion-resistant layer.

Description

[Technical field]

[0001] The present invention relates to the technical field of cables, and in particular to composite flame retardant cables. [Background technology]

[0002] Cables are used in various industries such as power systems, information transmission, and instrument systems. Power systems: The electric wire and cable products applied to power systems are mainly overhead bare wires, busbars, power cables (plastic cables, oil paper power cables (basically replaced by plastic power cables), rubber sleeve cables, overhead insulated cables), branch cables (replacing some busbars), winding wires, and electric equipment wire and cable for power equipment, etc. Information transmission: The electric wire and cable used in information transmission systems are mainly local telephone cables, television cables, electronic cables, radio frequency cables, optical fiber cables, data cables, winding wires, power communication or other composite cables, etc. Instrumentation systems: Almost all other products other than overhead bare wires are used, but mainly power cables, winding wires, data cables, instrument cables, etc. In some machinery industries, especially construction machinery, cables are an indispensable tool for transmitting power.

[0003] Currently, due to repeated bending of the cable during use, in addition to some harsh usage environments, the multiple cable cores inside the cable will wear away from each other, further shortening the service life of the cable. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, the technical problem to be solved by the present invention is to provide a composite flame-retardant cable by overcoming the defects of the prior art that the cables are repeatedly bent during long-term use and the use environment is poor, so that the multiple cable cores in the cable wear against each other, thereby shortening the service life. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides a composite flame-retardant cable including at least three cable cores and a separator, the separator being provided with at least three interconnected arc-shaped segments, with adjacent arc-shaped segments overlapping each other, the arc-shaped segments including an isolation unit that accommodates the cable cores, and a protection unit that covers the outer periphery of the isolation unit and includes a composite layer, a heat conductive layer and an abrasion-resistant layer, which are provided in order from the inside to the outside.

[0006] Optionally, the arcuate segments are provided in one-to-one correspondence with the cable cores.

[0007] Optionally, a filler layer is provided in the gap between the separator and the composite layer, and a filler layer is provided in the gap between the arcuate segment and the separator.

[0008] Optionally, the isolation unit further includes a reinforcing rib, and an accommodating space is formed between adjacent arc-shaped segments of the separator, and the reinforcing rib is provided within the accommodating space.

[0009] Optionally, a tension layer is provided between the reinforcing rib and the arcuate segment.

[0010] Optionally, a waterproof layer is provided between the composite layer and the thermally conductive layer.

[0011] Optionally, an insulating layer is provided between the thermally conductive layer and the wear-resistant layer.

[0012] Optionally, a flame retardant layer is provided between the insulating layer and the thermally conductive layer.

[0013] The technical solution of the present invention has the following advantages:

[0014] 1. The composite flame retardant cable of the present invention includes at least three cable cores and a separator, the separator is provided with at least three interconnected arc-shaped segments, adjacent arc-shaped segments are overlapped, the arc-shaped segments include an isolation unit for accommodating the cable cores, and a protection unit covering the outer periphery of the isolation unit, the protection unit including a composite layer, a heat conductive layer and an abrasion-resistant layer arranged in order from inside to outside. The installation of the arc-shaped segments can, on the one hand, prevent signal interference, and, on the other hand, reduce friction and abrasion between the cable cores, thereby extending the service life of the entire cable.

[0015] 2. In the composite flame retardant cable of the present invention, the arc-shaped segments are provided in one-to-one correspondence with the cable cores, and the arc-shaped segments cover the cable cores to serve as an insulator for the cable cores.

[0016] 3. In the composite flame retardant cable of the present invention, a filling layer is provided in the gap between the separator and the composite layer, and a filling layer is provided in the gap between the arc-shaped segment and the separator, which provides additional support and protection and improves the stability of the cable core.

[0017] 4. In the composite flame-retardant cable of the present invention, the isolation unit further includes a reinforcing rib, and an accommodating space is formed between adjacent arc-shaped segments of the separator, and the reinforcing rib is provided in the accommodating space, which can improve the mechanical strength and tensile properties of the cable, and improve the durability and safety of the cable.

[0018] 5. In the composite flame retardant cable of the present invention, a tensile layer is provided between the reinforcing ribs and the arc-shaped segments to protect the reinforcing ribs and the arc-shaped segments.

[0019] 6. In the composite flame retardant cable of the present invention, a waterproof layer is provided between the composite layer and the thermal conductive layer, and the waterproof layer plays a waterproofing role.

[0020] 7. In the composite flame-retardant cable of the present invention, an insulating layer is provided between the thermally conductive layer and the wear-resistant layer, and the insulating layer plays an insulating role.

[0021] 8. In the composite flame-retardant cable of the present invention, a flame-retardant layer is provided between the insulating layer and the thermally conductive layer, and the flame-retardant layer plays a role in preventing the fire from growing stronger.

[0022] In the following, in order to more clearly describe the specific embodiments of the present invention or the technical solutions in the prior art, drawings necessary for use in the description of the specific embodiments or the prior art will be briefly described. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can also obtain other drawings based on these drawings without creative efforts. [Brief description of the drawings]

[0023] [Figure 1] 1 is a schematic diagram of a composite flame retardant cable according to an embodiment of the present invention; [Diagram 2] 1 is a front view of a composite flame retardant cable according to an embodiment of the present invention; [Diagram 3] FIG. 3 is an enlarged schematic diagram of A shown in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The technical solutions of the present invention will be described below clearly and completely with reference to the drawings, and obviously, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, any other embodiments that a person skilled in the art can obtain without creative work are all within the scope of protection of the present invention.

[0025] In the description of the present invention, the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating or simplifying the description of the present invention, and do not indicate or imply that such devices or elements necessarily have a particular orientation or are constructed and operated in a particular orientation, and should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used merely for descriptive purposes, and should not be understood as indicating or implying relative importance.

[0026] In the description of the present invention, unless otherwise specified and limited, the terms "attached", "coupled" and "connected" should be understood in a broad sense, for example, they may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or internally communicated between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0027] In addition, the technical features of the various embodiments of the present invention described below can be combined with each other unless they are inconsistent.

[0028] The specific embodiment of the composite flame retardant cable shown in FIGS. 1 to 3 includes a protection unit 2, and a cable core 1 and an isolation unit 3 provided within the protection unit 2.

[0029] As shown in Figs. 1, 2 and 3, the number of cable cores 1 is five.

[0030] As shown in Figures 1, 2 and 3, the isolation unit 3 includes a separator 301, which is provided with five arc-shaped segments, the arc-shaped segments are provided in one-to-one correspondence with the cable cores 1, adjacent arc-shaped segments are provided overlapping each other, the five arc-shaped segments form an accommodating space, and a reinforcing rib 303 is provided in the accommodating space. As shown in Figures 1, 2 and 3, a tension layer 302 is provided between the reinforcing rib 303 and the arc-shaped segments, and the tension layer 302 is made of polyvinylamine, which has a certain wear-resistant effect and provides reinforcement protection for the reinforcing rib 303 and the arc-shaped segments.

[0031] As shown in FIGS. 1, 2 and 3, the protective unit 2 includes a composite layer 206, a waterproof layer 205, a heat conductive layer 204, a flame retardant layer 203, an insulating layer 202 and an abrasion resistant layer 201 arranged in this order from inside to outside. As shown in FIG. 2 and FIG. 3, a filling layer 207 is provided in the gap between the separator 301 and the composite layer 206, and a filling layer 207 is provided in the gap between the arc-shaped segment and the separator 301. The filling layer 207 is made of polyester tape, which has good mechanical properties and wear resistance, and can provide additional support and protection, thereby improving the stability of the connection between the cable core 1 and the filling layer 207. The composite layer 206 is made of polydimethylsiloxane, calcium sulfate and a coupling agent, vinyltriethoxysilane, which has excellent heat resistance, cold resistance, weather resistance and electrical insulation, making the cable have good electrical insulation. Calcium sulfate is used as a filler, which can improve the hardness and strength of the composite material. The presence of the coupling agent, vinyltriethoxysilane, can improve the compatibility of polydimethylsiloxane and calcium sulfate, which improves the overall performance of the composite material, and has good flame retardancy and can effectively prevent the spread of fire, thereby improving the safety of the cable.As shown in Figures 2 and 3, the waterproof layer 205 is made of chloroprene rubber, which can effectively prevent moisture from penetrating into the cable core 1, thereby improving the overall waterproofness and extending the service life of the entire cable; the thermally conductive layer 204 is made of a thermally conductive graphite sheet, which has good thermal conductivity and can quickly dissipate the heat generated inside the cable and prevent overheating damage to the cable; the flame-retardant layer 203 is made of a low-smoke and low-halogen flame-retardant material, which has good flame retardancy and can prevent the spread of fire, as well as reduce the generation of toxic smoke and improve safety; the insulating layer 202 is made of a combination of cross-linked polyethylene and polypropylene, which has excellent electrical properties, such as high insulation resistance and withstand voltage strength, small dielectric loss, melting point and excellent electrical insulation; and the cross-linked polyethylene can ensure the transmission of current signals and withstand high pressure transportation, thereby improving the use effect of the cable; and the wear-resistant layer 201 is made of a combination of chlorinated polyethylene, silicone rubber and flake graphite powder, which can provide good wear resistance.

[0032] The composite flame retardant cable of the present invention has the following advantages: (1) The separator 301 is provided with an arc-shaped segment, which effectively prevents signal interference, improves the transmission quality of the cable, reduces friction and wear between the cable cores 1, and extends the service life of the cable. (2) The arc-shaped segment is designed to increase the partition area for the cable cores 1, improving the use effect of the cable. (3) The combination of the wear-resistant layer 201, the insulating layer 202, the flame-retardant layer 203, the heat-conducting layer 204, the waterproof layer 205, the composite layer 206, and the filling layer 207 can provide good wear resistance, ensure the transmission of current signals and withstand high-pressure transportation, and can effectively reduce the wear and damage on the cable surface, extend the service life of the cable, ensure the safety of personnel and equipment, and effectively prevent the cable from performance degradation and failure due to environmental influences. It also has good flame retardancy, can prevent the spread of fire, reduce the generation of toxic smoke, and improve safety.

[0033] In an alternative embodiment, the number of cable cores 1 may be three, five, six or even more.

[0034] Obviously, the above examples are merely illustrative and are not intended to limit the embodiments. Those skilled in the art can make various other changes or modifications based on the above description. It is not necessary to cover all the embodiments here, and it is impossible to cover all the embodiments. Any obvious changes or modifications derived from these still belong to the scope of the utility model created by the present invention.

[0035] 1 Cable Core 2 Protection Unit 201 Wear-resistant layer 202 Insulating layer 203 Flame retardant layer 204 Thermal Conduction Layer 205 Waterproof layer 206 Composite layer 207 Filled bed 3 Isolation Unit 301 Separator 302 Tensile layer 303 Reinforcement rib

Claims

1. A composite flame retardant cable, At least three cable cores (1); an isolation unit (3) including a separator (301), the separator (301) being provided with at least three interconnected arc-shaped segments, adjacent arc-shaped segments being overlapped, the arc-shaped segments housing a cable core (1); A composite flame-retardant cable comprising: a protection unit (2) covering the outer periphery of an isolation unit (3) and including, in order from inside to outside, a composite layer (206), a heat conductive layer (204) and an abrasion-resistant layer (201).

2. 2. The composite flame retardant cable according to claim 1, characterized in that the arcuate segments are provided in one-to-one correspondence with the cable cores (1).

3. 3. The composite flame retardant cable of claim 2, characterized in that a filling layer (207) is provided in the gap between the separator (301) and the composite layer (206), and a filling layer (207) is provided in the gap between the arc-shaped segment and the separator (301).

4. 4. The composite flame-retardant cable according to claim 3, characterized in that the isolation unit (3) further includes a reinforcing rib (303), and an accommodation space is formed between adjacent arc-shaped segments of the separator (301), and the reinforcing rib (303) is provided in the accommodation space.

5. 5. The composite flame retardant cable of claim 4, wherein a tensile layer (302) is provided between the reinforcing rib (303) and the arcuate segment.

6. 2. The composite flame retardant cable according to claim 1, characterized in that a waterproof layer (205) is provided between the composite layer (206) and the heat conducting layer (204).

7. 7. A composite flame retardant cable according to claim 6, characterized in that an insulating layer (202) is provided between the heat conducting layer (204) and the wear resistant layer (201).

8. 8. The composite flame retardant cable according to claim 7, characterized in that a flame retardant layer (203) is provided between the insulating layer (202) and the heat conducting layer (204).

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