Halogen-free low-smoke flame-retardant control cable

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant control cable in the technical field of control cables, which comprises a cable conductor, an insulation shielding layer is attached to the outer side of the cable conductor, the insulation shielding layer is sequentially provided with an inner shielding layer, an insulation layer and an outer shielding layer from inside to outside, an inner sheath layer is attached to the outer side of the insulation shielding layer, and an outer sheath layer is attached to the outer side of the insulation shielding layer. A filling layer is arranged between the insulation shielding layer and the inner sheath layer in a filling mode, a flame-retardant layer is arranged on the outer side of the inner sheath layer in an attached mode, a fireproof layer is arranged on the outer side of the flame-retardant layer in an attached mode, an armor layer is arranged on the outer side of the fireproof layer in an attached mode, and an outer sheath layer is arranged on the outer side of the armor layer in an attached mode. According to the control cable, illumination and ultraviolet rays can be effectively resisted through the sunscreen layer, the heat resistance and the wear resistance of the wear-resistant layer are good, meanwhile, the control cable has good ultraviolet resistance, and aging, cracking and embrittlement of the control cable are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of control cables, and specifically relates to a halogen-free low-smoke flame-retardant control cable. Background Technique

[0002] Control cables are an essential part of modern industrial production. They are cables used to connect electrical control equipment and transmit signals, and their main functions include transmitting electrical signals, improving production efficiency, and ensuring production safety. In the prior art, when control cables are used outdoors, light and ultraviolet rays may damage the control cables, resulting in phenomena such as aging, cracking, and embrittlement. Therefore, it is necessary to propose a halogen-free low-smoke flame-retardant control cable. Content of the Utility Model

[0003] The purpose of the utility model is to provide a halogen-free low-smoke flame-retardant control cable to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a halogen-free low-smoke flame-retardant control cable, including a cable conductor. The number of the cable conductors is set to three groups. An insulating shielding layer is adhesively provided on the outer side of the cable conductor. The insulating shielding layer is sequentially provided with an inner shielding layer, an insulating layer, and an outer shielding layer from inside to outside. An inner sheath layer is adhesively provided on the outer side of the insulating shielding layer. A filling layer is filled between the insulating shielding layer and the inner sheath layer. A flame-retardant layer is adhesively provided on the outer side of the inner sheath layer. A fire-resistant layer is adhesively provided on the outer side of the flame-retardant layer. An armor layer is adhesively provided on the outer side of the fire-resistant layer. An outer sheath layer is adhesively provided on the outer side of the armor layer. The outer sheath layer is sequentially provided with a corrosion-resistant layer, a sunscreen layer, and a wear-resistant layer from inside to outside.

[0005] Preferably, the inner shielding layer is set as a semi-conductive shielding layer, the inner shielding layer is made of a semi-conductive material, the insulating layer is set as a plastic insulating layer, the insulating layer is made of a polyethylene material, the outer shielding layer is set as a metal shielding layer, and the outer shielding layer is formed by winding copper tape.

[0006] Preferably, the sunscreen layer is made of a sunscreen material containing ultraviolet-ray protection components, and the wear-resistant layer is made of a chlorinated polyethylene rubber material.

[0007] Preferably, the flame-retardant layer is set as a halogen-free low-smoke flame-retardant layer, and the flame-retardant layer is made of a halogen-free low-smoke flame-retardant polyolefin material.

[0008] Preferably, the fire-resistant layer is formed by winding a fire-resistant mica tape.

[0009] Preferably, the armor layer is set as a metal armor layer, and the armor layer is made of steel tape braiding.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. In the present utility model, the flame retardant layer is made of a halogen-free low-smoke flame retardant polyolefin material, which has the characteristics of low smoke, halogen-free, low toxicity, etc. The gas released during combustion does not produce harmful substances, and it can prevent the rapid spread and diffusion of flames. The fire-resistant layer is wound with a fire-resistant mica tape and has excellent high-temperature resistance and combustion resistance. When encountering an open fire, there is basically no volatilization of harmful smoke.

[0012] 2. In the present utility model, an outer sheath layer is provided. The corrosion-resistant layer can play a role in preventing corrosion of the armored layer. The sunscreen layer is made of a sunscreen material containing ultraviolet-resistant components, which can effectively resist light and ultraviolet rays. The wear-resistant layer is made of chlorinated polyethylene rubber material, which has good heat resistance and wear resistance, and also has good ultraviolet resistance, preventing the control cable from aging, cracking, and embrittlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the insulation shielding layer of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the outer sheath layer of the present utility model.

[0016] In the figure: 1. Cable conductor; 2. Insulation shielding layer; 201. Inner shielding layer; 202. Insulation layer; 203. Outer shielding layer; 3. Filling layer; 4. Inner sheath layer; 5. Flame retardant layer; 6. Fire-resistant layer; 7. Armored layer; 8. Outer sheath layer; 801. Corrosion-resistant layer; 802. Sunscreen layer; 803. Wear-resistant layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] As mentioned in the background art, in view of the problem that when the control cable in the prior art is used outdoors, light and ultraviolet rays may damage the control cable, resulting in problems such as aging, cracking, and embrittlement, the present utility model proposes a halogen-free low-smoke flame retardant control cable.

[0019] Embodiment 1:

[0020] Please refer to Figure 1 and Figure 2 , a halogen-free low-smoke flame-retardant control cable, comprising a cable conductor 1, the number of the cable conductors 1 is set to three groups, an insulating shielding layer 2 is attached to the outside of the cable conductor 1, and an inner shielding layer 201, an insulating layer 202 and an outer shielding layer 203 are sequentially arranged from inside to outside on the insulating shielding layer 2. The inner shielding layer 201 is set as a semi-conductive shielding layer, and the inner shielding layer 201 is made of semi-conductive material, which can form a smooth layer on the surface of the cable conductor 1 to reduce the electric field concentration at the insulation interface. The insulating layer 202 is set as a plastic insulating layer, and the insulating layer 202 is made of polyethylene material, and its insulation performance and electrical characteristics are very excellent, which can play a very good protection role in the cable. The outer shielding layer 203 is set as a metal shielding layer, and the outer shielding layer 203 is formed by winding copper tape, which mainly plays the role of shielding the electric field.

[0021] In this embodiment, please refer to Figure 1 , an inner sheath layer 4 is attached to the outside of the insulating shielding layer 2, a flame-retardant layer 5 is attached to the outside of the inner sheath layer 4, the flame-retardant layer 5 is set as a halogen-free low-smoke flame-retardant layer, and the flame-retardant layer 5 is made of halogen-free low-smoke flame-retardant polyolefin material, which has the characteristics of low smoke, halogen-free, low toxicity, etc. The gas released during combustion does not produce harmful substances, and can prevent the rapid spread and diffusion of flames.

[0022] In this embodiment, please refer to Figure 1 , a fire-resistant layer 6 is attached to the outside of the flame-retardant layer 5, and the fire-resistant layer 6 is formed by winding fire-resistant mica tape, which has excellent high-temperature resistance and combustion resistance, and there is basically no volatilization of harmful smoke when encountering an open fire.

[0023] In this embodiment, please refer to Figure 1 , an armor layer 7 is attached to the outside of the fire-resistant layer 6, the armor layer 7 is set as a metal armor layer, and the armor layer 7 is made of steel strip weaving, which can enhance the mechanical strength of the control cable.

[0024] In this embodiment, please refer to Figure 1 , an outer sheath layer 8 is attached to the outside of the armor layer 7, and the outer sheath layer 8 is sequentially provided with a corrosion-resistant layer 801, a sunscreen layer 802 and a wear-resistant layer 803 from inside to outside. The corrosion-resistant layer 801 can play a role in preventing corrosion of the armor layer. The sunscreen layer 802 is made of sunscreen material containing ultraviolet-resistant components, which can effectively resist light and ultraviolet rays. The wear-resistant layer 803 is made of chlorinated polyethylene rubber material, which has good heat resistance and wear resistance, and at the same time has good ultraviolet resistance, preventing the control cable from aging, cracking and embrittlement.

[0025] Embodiment 2:

[0026] Please refer to Figure 1, what is different from the first embodiment in this embodiment is that a filling layer 3 is provided between the insulation shielding layer 2 and the inner sheath layer 4, which plays an important role in filling, compacting and protecting the internal structure of the control cable.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A halogen-free low-smoke flame-retardant control cable, comprising a cable conductor (1), characterized in that: The number of the cable conductors (1) is set to three groups. An insulating shielding layer (2) is attached to the outer side of the cable conductors (1). The insulating shielding layer (2) is sequentially provided with an inner shielding layer (201), an insulating layer (202), and an outer shielding layer (203) from inside to outside. An inner sheath layer (4) is attached to the outer side of the insulating shielding layer (2). A filling layer (3) is filled between the insulating shielding layer (2) and the inner sheath layer (4). A flame-retardant layer (5) is attached to the outer side of the inner sheath layer (4). A fire-resistant layer (6) is attached to the outer side of the flame-retardant layer (5). An armor layer (7) is attached to the outer side of the fire-resistant layer (6). An outer sheath layer (8) is attached to the outer side of the armor layer (7). The outer sheath layer (8) is sequentially provided with a corrosion-resistant layer (801), a sun protection layer (802), and a wear-resistant layer (803) from inside to outside.

2. The halogen-free and low-smoke flame-retardant control cable according to claim 1, characterized in that: The inner shielding layer (201) is set as a semi-conductive shielding layer. The inner shielding layer (201) is made of semi-conductive material. The insulating layer (202) is set as a plastic insulating layer. The insulating layer (202) is made of polyethylene material. The outer shielding layer (203) is set as a metal shielding layer. The outer shielding layer (203) is formed by winding copper tape.

3. A halogen-free low-smoke flame-retardant control cable according to claim 1, characterized in that: The wear-resistant layer (803) is made of chlorinated polyethylene rubber material.

4. A halogen-free low-smoke flame-retardant control cable according to claim 1, characterized in that: The flame-retardant layer (5) is set as a halogen-free low-smoke flame-retardant layer. The flame-retardant layer (5) is made of halogen-free low-smoke flame-retardant polyolefin material.

5. A halogen-free low-smoke flame-retardant control cable according to claim 1, characterized in that: The fire-resistant layer (6) is formed by winding fire-resistant mica tape.

6. A halogen-free low-smoke flame-retardant control cable according to claim 1, characterized in that: The armor layer (7) is set as a metal armor layer. The armor layer (7) is made of steel tape braiding.

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