Halogen-free flame-retardant cable capable of resisting high and low temperatures

Abstract

The utility model provides a halogen-free flame-retardant cable resistant to high and low temperatures, which relates to the technical field of cables and comprises a cable device body, a group of wire cores are arranged in the cable device body, a high-temperature-resistant layer is arranged on the outer surface wall of the group of wire cores, a low-temperature-resistant layer is arranged on the outer surface wall of the high-temperature-resistant layer, and a waterproof layer is arranged on the outer surface wall of the low-temperature-resistant layer. The outer surface wall of the waterproof layer is provided with a group of reinforcing ribs, and the outer surface walls of the group of reinforcing ribs are provided with a flame-retardant layer and a low-temperature-resistant layer, so that the cable can be protected to operate normally in a low-temperature environment, the high-temperature-resistant layer enables the cable to bear a high-temperature environment without being broken or deformed, and the flame-retardant layer can prevent fire from expanding, slow down flame spreading and protect the cable from being damaged by fire. And the flame-retardant layer is arranged without a halogen flame retardant, so that a large amount of harmful gas is generally not generated during combustion, the harm to a human body and the environment is reduced, and the layers can be used in different extreme environments so as to ensure the normal operation and safety of the cable under various conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a halogen-free flame-retardant cable which can withstand high and low temperatures. Background Art

[0002] The function of cables is to transmit electrical energy, signals and realize electromagnetic conversion. Cables transmit electricity such as power cables and overhead lines, transmit signals such as coaxial cables, and realize electromagnetic conversion such as enameled wires. With the development of industry, the demand for cables is increasing, and the insulation layer and sheath materials of wires and cables are mostly organic polymers. This type of wire and cable is prone to combustion under conditions of high voltage, heat source, certain temperature, oxygen concentration, etc., so flame retardancy is very important.

[0003] In the production process of some existing cables, halogen flame retardants are often added to achieve flame retardant effect. Halogen flame retardants have the significant advantages of high flame retardant efficiency, low dosage and low price. However, halogen flame retardants generate a large amount of smoke, corrosive and toxic gases when burned, which limits their application. Therefore, a halogen-free flame retardant cable is needed. Utility Model Content

[0004] The utility model aims to solve the problem that the application of flame-retardant cables using halogen flame retardants in the prior art is limited, and proposes a halogen-free flame-retardant cable that can withstand high and low temperatures.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a halogen-free flame-retardant cable that can withstand high and low temperatures, including a cable device main body, a group of wire cores are arranged inside the cable device main body, an insulating layer is fixedly installed on the outer wall of one group of the wire cores, a shielding layer is fixedly installed on the outer wall of the insulating layer, a filling layer is arranged on the outer wall of one group of the shielding layers, a high-temperature resistant layer is arranged on the outer wall of the filling layer, a low-temperature resistant layer is arranged on the outer wall of the high-temperature resistant layer, a waterproof layer is arranged on the outer wall of the low-temperature resistant layer, a group of reinforcing ribs are arranged on the outer wall of the waterproof layer, and a flame-retardant layer is arranged on the outer wall of one group of the reinforcing ribs, through the arrangement of the reinforcing ribs, the reinforcing ribs are usually a metal wire or synthetic fiber, which are used to enhance the structural strength and tensile properties of the cable, and the appropriate arrangement of the reinforcing ribs can improve the flexural properties of the cable, making it more flexible during installation and use, and reducing the risk of breakage. Through the arrangement of the filling layer, the internal gaps of the cable can be filled, and the function of the filling layer is to evenly distribute mechanical stress, provide buffering and support inside the cable, so as to enhance the compressive performance of the cable.

[0006] Preferably, a protective layer is provided on the outer wall of the flame retardant layer, and a wear-resistant layer is provided on the outer wall of the protective layer. The wear-resistant layer is arranged on the outside of the cable device body. The wear-resistant layer is made of polyethylene, which has good wear resistance and scratch resistance and can prevent the cable surface from being worn or scratched. The protective layer is made of polyurethane and is mainly used to protect the internal components of the cable from mechanical damage, environmental influences, chemical corrosion and other factors.

[0007] Preferably, the thickness of the insulating layer is 0.5 mm to 0.7 mm, and the thickness of the shielding layer is 0.6 to 0.8 mm. The insulating layer is made of polyvinyl chloride material, which can reduce environmental pollution during its manufacturing process. It has good electrical resistance and insulation properties. The shielding layer is composed of a thin layer of aluminum foil material, which can effectively shield most high-frequency electromagnetic radiation and external electromagnetic interference.

[0008] Preferably, the thickness of the high temperature resistant layer is 4mm to 6mm, and the thickness of the low temperature resistant layer is 2mm to 4mm. The material of the high temperature resistant layer is polytetrafluoroethylene, which is a material with high heat resistance and can maintain its stable performance at high temperatures, so that the cable can withstand high temperature environment without cracking or deformation. The material of the low temperature resistant layer is ethylene propylene rubber, which is a material with good low temperature resistance and can protect the normal operation of the cable in a low temperature environment.

[0009] Preferably, the waterproof layer has a thickness of 2mm to 3mm, and the flame retardant layer has a thickness of 2mm to 4mm. The waterproof layer can enhance the moisture resistance of the cable, prevent moisture from entering the interior of the cable, and reduce the impact on electrical performance. The flame retardant layer is made of a silicon-based flame retardant and can be made into a coating form and applied to the surface of the cable flame retardant layer. This coating can provide flame retardancy and prevent the spread of flames, and usually does not produce a large amount of harmful gases during combustion. Silicon-based flame retardants can usually form non-toxic substances such as silicon oxide, reducing harm to the human body and the environment.

[0010] Preferably, the protective layer has a thickness of 4 mm to 5 mm, and the wear-resistant layer has a thickness of 2 mm to 3 mm.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, a low-temperature resistant layer is provided to protect the normal operation of the cable in a low-temperature environment. A high-temperature resistant layer and a flame retardant layer are also provided. The high-temperature resistant layer enables the cable to withstand a high-temperature environment without breaking or deforming, while the flame retardant layer can prevent the fire from expanding and slowing down the spread of the flame, thereby protecting the cable from fire damage. The flame retardant layer does not contain halogen flame retardants, and generally does not produce a large amount of harmful gases during combustion, thereby reducing harm to the human body and the environment. The settings of these layers can be used in different extreme environments to ensure the normal operation and safety of the cable under various conditions. At the same time, a group of reinforcing ribs are provided in the main body of the cable device. The reinforcing ribs are generally a metal wire or a synthetic fiber, which are used to enhance the structural strength and tensile strength of the cable, and can also improve the flexural performance of the cable. Properly arranging the reinforcing ribs can improve the flexural performance of the cable, making the cable more flexible during installation and use, and reducing the risk of breakage.

[0013] 2. In the utility model, a wear-resistant layer and a protective layer are arranged on the outside of the main body of the cable device. The wear-resistant layer is located on the outside of the cable and is mainly used to increase the wear resistance of the cable to prevent the cable surface from being worn or scratched. The protective layer can ensure that the cable is not corroded or damaged by the external environment, chemicals, moisture, ultraviolet rays, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a halogen-free flame-retardant cable that can withstand high and low temperatures proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure from another perspective of a halogen-free flame-retardant cable capable of resisting high and low temperatures proposed by the utility model;

[0016] Figure 3 The utility model provides a cross-sectional layered schematic diagram of a halogen-free flame-retardant cable capable of withstanding high and low temperatures.

[0017] Legend: 1. Wire core; 2. Insulation layer; 3. Shielding layer; 4. Filling layer; 5. High temperature resistant layer; 6. Low temperature resistant layer; 7. Waterproof layer; 8. Reinforcement ribs; 9. Flame retardant layer; 10. Protective layer; 11. Wear-resistant layer; 12. Cable device body. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: it includes a cable device body 12, a group of wire cores 1 are arranged inside the cable device body 12, an insulating layer 2 is fixedly installed on the outer wall of the group of wire cores 1, a shielding layer 3 is fixedly installed on the outer wall of the insulating layer 2, a filling layer 4 is arranged on the outer wall of a group of shielding layers 3, a high temperature resistant layer 5 is arranged on the outer wall of the filling layer 4, a low temperature resistant layer 6 is arranged on the outer wall of the high temperature resistant layer 5, a waterproof layer 7 is arranged on the outer wall of the low temperature resistant layer 6, a group of reinforcing ribs 8 are arranged on the outer wall of the waterproof layer 7, and a flame retardant layer 9 is arranged on the outer wall of a group of reinforcing ribs 8. The reinforcing ribs 8 are usually a metal wire or synthetic fiber used to enhance the structural strength and tensile performance of the cable. Appropriately arranging the reinforcing ribs can improve the flexural performance of the cable, making it more flexible during installation and use, and reducing the risk of breakage. The filling layer 4 can fill the internal gap of the cable. The function of the filling layer 4 is to evenly distribute the mechanical stress, provide buffering and support inside the cable, so as to enhance the compressive performance of the cable.

[0021] like Figure 1-3 As shown, a protective layer 10 is arranged on the outer wall of the flame retardant layer 9, and a wear-resistant layer 11 is arranged on the outer wall of the protective layer 10. The wear-resistant layer 11 is arranged on the outside of the cable device body 12. The wear-resistant layer 11 is made of polyethylene, which has good wear resistance and scratch resistance and can prevent the cable surface from being worn or scratched. The protective layer 10 is made of polyurethane and is mainly used to protect the internal components of the cable from mechanical damage, environmental influences, chemical corrosion and other factors.

[0022] like Figure 1-3 As shown, the thickness of the insulating layer 2 is 0.5mm to 0.7mm, the thickness of the shielding layer 3 is 0.6 to 0.8mm, and the material of the insulating layer 2 is polyvinyl chloride material, which can reduce the pollution to the environment during its manufacturing process. It has good electrical resistance and insulation performance. The shielding layer 3 is composed of a thin layer of aluminum foil material, which can effectively shield most high-frequency electromagnetic radiation and external electromagnetic interference.

[0023] like Figure 1-3As shown, the thickness of the high temperature resistant layer 5 is 4mm to 6mm, and the thickness of the low temperature resistant layer 6 is 2mm to 4mm. The material of the high temperature resistant layer 5 is polytetrafluoroethylene, which is a material with high heat resistance and can maintain its stable performance at high temperatures, so that the cable can withstand high temperature environments without cracking or deformation. The material of the low temperature resistant layer 6 is ethylene propylene rubber, which is a material with good low temperature resistance and can protect the normal operation of the cable in low temperature environments.

[0024] like Figure 1-3 As shown, the thickness of the waterproof layer 7 is 2mm to 3mm, and the thickness of the flame retardant layer 9 is 2mm to 4mm. The waterproof layer 7 can enhance the moisture resistance of the cable, prevent moisture from entering the cable, and reduce the impact on the electrical performance. The flame retardant layer 9 is made of a silicon-based flame retardant and can be made into a coating form and applied to the surface of the cable flame retardant layer. This coating can provide flame retardancy and prevent the spread of flames, and usually does not produce a large amount of harmful gases when burning. Silicon-based flame retardants can usually form non-toxic substances such as silicon oxide to reduce harm to the human body and the environment.

[0025] like Figure 1-3 As shown, the thickness of the protective layer 10 is 4 mm to 5 mm, and the thickness of the wear-resistant layer 11 is 2 mm to 3 mm.

[0026] Working principle: A low-temperature resistant layer is provided to protect the normal operation of the cable in a low-temperature environment. A high-temperature resistant layer and a flame-retardant layer are provided at the same time. The high-temperature resistant layer enables the cable to withstand a high-temperature environment without breaking or deforming, while the flame-retardant layer can prevent the expansion of the fire and slow down the spread of the flame, protecting the cable from fire damage. The flame-retardant layer does not contain halogen flame retardants, and usually does not produce a large amount of harmful gases when burned, reducing the harm to the human body and the environment. These layers can be used in different extreme environments to ensure the normal operation and safety of the cable under various conditions. At the same time, a group of reinforcing ribs are provided in the main body of the cable device. The reinforcing ribs are usually a kind of Metal wire or synthetic fiber is used to enhance the structural strength and tensile strength of the cable, and can also improve the flexural performance of the cable. Properly setting reinforcing ribs can improve the flexural performance of the cable, making the cable more flexible during installation and use and reducing the risk of breakage. A wear-resistant layer and a protective layer are arranged on the outside of the main body of the cable device. The wear-resistant layer is located on the outside of the cable and is mainly used to increase the wear resistance of the cable to prevent the surface of the cable from being worn or scratched. The protective layer can ensure that the cable is not corroded or damaged by the external environment, chemicals, moisture, ultraviolet rays, etc. The waterproof layer 7 can enhance the moisture resistance of the cable, prevent moisture from entering the interior of the cable, and reduce the impact on electrical performance.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A halogen-free flame-retardant cable that can withstand high and low temperatures, characterized by: The invention comprises a cable device body (12), wherein a group of wire cores (1) are arranged inside the cable device body (12), an insulating layer (2) is fixedly installed on the outer wall of the group of wire cores (1), a shielding layer (3) is fixedly installed on the outer wall of the insulating layer (2), a filling layer (4) is arranged on the outer wall of the group of shielding layers (3), a high temperature resistant layer (5) is arranged on the outer wall of the filling layer (4), a low temperature resistant layer (6) is arranged on the outer wall of the high temperature resistant layer (5), a waterproof layer (7) is arranged on the outer wall of the low temperature resistant layer (6), a group of reinforcing ribs (8) are arranged on the outer wall of the waterproof layer (7), and a group of reinforcing ribs (8) are arranged on the outer wall of the group of reinforcing ribs (8), and a flame retardant layer (9) is arranged on the outer wall of the group of reinforcing ribs (8).

2. The high and low temperature resistant halogen-free flame-retardant cable according to claim 1, characterized in that: A protective layer (10) is provided on the outer wall of the flame retardant layer (9), and a wear-resistant layer (11) is provided on the outer wall of the protective layer (10).

3. The high and low temperature resistant halogen-free flame-retardant cable according to claim 1, characterized in that: The thickness of the insulating layer (2) is 0.5 mm to 0.7 mm, and the thickness of the shielding layer (3) is 0.6 mm to 0.8 mm.

4. The high and low temperature resistant halogen-free flame-retardant cable according to claim 1, characterized in that: The thickness of the high temperature resistant layer (5) is 4 mm to 6 mm, and the thickness of the low temperature resistant layer (6) is 2 mm to 4 mm.

5. The high and low temperature resistant halogen-free flame-retardant cable according to claim 1, characterized in that: The waterproof layer (7) has a thickness of 2 mm to 3 mm, and the flame retardant layer (9) has a thickness of 2 mm to 4 mm.

6. The high and low temperature resistant halogen-free flame-retardant cable according to claim 2, characterized in that: The thickness of the protective layer (10) is 4 mm to 5 mm, and the thickness of the wear-resistant layer (11) is 2 mm to 3 mm.

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