Low-temperature frost crack prevention cable

Abstract

The utility model relates to the technical field of cables, in particular to a low-temperature frost crack prevention cable, which comprises a lead, a fireproof layer mounted on the lead, an insulating layer mounted on the fireproof layer, a shielding layer mounted on the insulating layer, and a filling layer mounted on the shielding layer. According to the utility model, the filling layer is arranged, and the filling layer is mainly used for filling gaps in the cable, enhancing the anti-pressure capability and the stability of the cable, and improving the low-temperature frost crack prevention performance of the cable at the same time; the main function of the inner protection layer is to protect the insulating layer from external mechanical damage and chemical corrosion, the inner protection layer has good cold resistance and weather resistance, can resist the influence of a low-temperature environment, and prevents the inner protection layer of the cable from frost cracking, and the anti-freezing layer is arranged to enhance the anti-freezing performance of the cable, so that the anti-freezing performance of the cable is improved, and the service life of the cable is prolonged. And the use in a severe environment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a low-temperature frost-cracking resistant cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, usually consisting of several or several groups of wires. These wires can be single or multiple strands, and are isolated from each other by insulation to prevent current leakage or short circuits. The outer layer of the cable is usually wrapped with one or more layers of protective material to provide additional protection and prevent environmental factors from damaging the cable.

[0003] At present, the thermal insulation effect of traditional cables is relatively poor. In the cold natural environment in the north, the cables will be in a low temperature state for a long time, which may easily cause the cable surface to crack, thus causing leakage of the cable. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a low-temperature frost-cracking-proof cable.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A low-temperature frost-cracking proof cable is designed, comprising a conductor, a fire-resistant layer installed on the conductor, an insulating layer installed on the fire-resistant layer, a shielding layer installed on the insulating layer, a filling layer installed on the shielding layer, an inner protective layer installed on the filling layer, an armor layer installed on the inner protective layer, an antifreeze layer installed on the armor layer, an outer protective layer installed on the antifreeze layer, and a wear-resistant layer installed on the outer protective layer.

[0007] Furthermore, the fire-resistant layer is made of glass fiber.

[0008] Furthermore, the insulating layer is made of cross-linked polyethylene.

[0009] Furthermore, the shielding layer is made of copper tape.

[0010] Furthermore, the filling layer is made of polyethylene filler, and the inner protective layer is made of silicone rubber.

[0011] Furthermore, the armor layer is made of steel strip, and the antifreeze layer is made of polystyrene foam.

[0012] Furthermore, the outer protective layer is made of rubber, and the wear-resistant layer is made of polyurethane.

[0013] The utility model proposes a low-temperature frost-cracking resistant cable, which has the following beneficial effects: the utility model is provided with a filling layer, the main function of which is to fill the gaps inside the cable, thereby enhancing the cable's compressive resistance and stability, while also improving the cable's low-temperature frost-cracking resistant performance; an inner protective layer is provided, the inner protective layer is made of silicone rubber, the main function of which is to protect the insulating layer from external mechanical damage and chemical corrosion; at the same time, the inner protective layer has good cold resistance and weather resistance, can withstand the influence of low-temperature environment, and prevent the cable's inner protective layer from freezing and cracking; an antifreeze layer is provided, the main function of which is to enhance the cable's antifreeze performance, making it easy to use in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a top view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the wire of the utility model.

[0017] In the figure: 1. conductor; 2. fire-resistant layer; 3. insulation layer; 4. shielding layer; 5. filling layer; 6. inner protective layer; 7. armor layer; 8. antifreeze layer; 9. outer protective layer; 10. wear-resistant layer. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-3A low-temperature frost cracking-proof cable includes a conductor 1, characterized in that: a fire-resistant layer 2 is installed on the conductor 1. When a fire occurs, the fire-resistant layer 2 can effectively isolate high temperature and flames and protect the conductor inside the cable. This can ensure that the cable can still maintain a certain operating time in a fire, and buy more time for people to escape and put out the fire. In addition, since the fire-resistant layer 2 has excellent fire resistance, it can slow down the spread of the fire and reduce the degree of damage to the surrounding environment and equipment. This is of great significance for protecting people's lives and property. An insulating layer 3 is installed on the fire-resistant layer 2. The main function of the insulating layer 3 is to isolate the conductor and prevent current leakage. A shielding layer 4 is installed on the insulating layer 3. The main function of the shielding layer 4 is to shield the electric field and electromagnetic interference. A filling layer 5 is installed on the shielding layer 4. The main function of the filling layer 5 is to fill the gap inside the cable, enhance the cable's compressive strength and stability, and also improve the cable's low-temperature frost cracking resistance. An inner sheath 6 is installed on the filling layer 5. The main function of the inner sheath 6 is to protect the insulation. Layer 3 is protected from external mechanical damage and chemical corrosion; an armor layer 7 is installed on the inner protective layer 6, and the main function of the armor layer 7 is to enhance the mechanical strength of the cable and prevent external mechanical damage; an antifreeze layer 8 is installed on the armor layer 7, and the main function of the antifreeze layer 8 is to enhance the antifreeze performance of the cable and facilitate use in harsh environments; an outer protective layer 9 is installed on the antifreeze layer 8, and the main function of the outer protective layer 9 is to protect the cable from the influence of the external environment; a wear-resistant layer 10 is installed on the outer protective layer 9, and the main function of the wear-resistant layer 10 is to enhance the wear resistance of the cable and facilitate the use of the cable.

[0020] In detail, the fireproof layer 2 is made of glass fiber, which has excellent insulation properties and is suitable for electrical insulation materials and thermal insulation materials. Glass fiber is resistant to high temperatures and can be used for a long time in high temperature environments. Glass fiber has good resistance to most chemicals and can maintain stability in corrosive environments. Glass fiber has high tensile strength and elastic modulus and is a good reinforcing material. When a fire occurs, the fireproof layer 2 can effectively isolate high temperature and flames and protect the conductor inside the cable, which can ensure that the cable can still maintain a certain operating time in a fire, and buy more time for people to escape and put out the fire. In addition, since the fireproof layer 2 has excellent fire resistance, it can slow down the spread of the fire and reduce the degree of damage to the surrounding environment and equipment caused by the fire. This is of great significance for protecting people's lives and property safety.

[0021] Furthermore, the insulating layer 3 is made of cross-linked polyethylene, which maintains the original good insulation properties of polyethylene and further increases the insulation resistance. The cross-linked polyethylene establishes new chemical bonds during the cross-linking process, thereby improving its hardness, rigidity, wear resistance and impact resistance. The main function of the insulating layer 3 is to isolate the conductor and prevent current leakage.

[0022] Furthermore, the shielding layer 4 is made of copper tape, and the main function of the shielding layer 4 is to shield the electric field and electromagnetic interference.

[0023] In more detail, the filling layer 5 is made of polyethylene filler, and the polyethylene material has good flexibility, corrosion resistance and pressure resistance, and has a small specific gravity and good processing performance. In a low temperature environment, the polyethylene filler can maintain the insulation and filling effect of the cable, prevent the appearance of gaps and moisture accumulation inside the cable, thereby improving the cable's low temperature frost cracking resistance. The main function of the filling layer 5 is to fill the gaps inside the cable, enhance the cable's compressive strength and stability, and also improve the cable's low temperature frost cracking resistance. The inner sheath 6 is made of silicone rubber, which has good low temperature resistance and outstanding heat resistance. Silicone rubber has excellent weather resistance and corrosion resistance, and can resist the erosion of ultraviolet rays, ozone, moisture and a variety of chemical substances. Silicone rubber has a very high resistivity, and its resistance value remains stable over a wide temperature and frequency range. Silicone rubber also has good resistance to high-voltage corona discharge and arc discharge. Silicone rubber has excellent physical and mechanical properties such as tensile strength, tear strength and elongation. The main function of the inner protective layer 6 is to protect the insulating layer 3 from external mechanical damage and chemical corrosion. At the same time, the inner protective layer 6 has good cold resistance and weather resistance, can withstand the influence of low temperature environment, and prevent the cable from freezing and cracking.

[0024] In general, the armor layer 7 is made of steel belt, and the main function of the armor layer 7 is to enhance the mechanical strength of the cable and prevent external mechanical damage. The antifreeze layer 8 is made of polystyrene foam, which also has good thermal insulation performance, can effectively reduce the heat loss inside the cable and maintain the normal working temperature of the cable in a low temperature environment. The main function of the antifreeze layer 8 is to enhance the antifreeze performance of the cable and facilitate its use in harsh environments.

[0025] Finally, the outer sheath 9 is made of rubber, and its main function is to protect the cable from the influence of the external environment. The wear-resistant layer 10 is made of polyurethane. Polyurethane has high density and strength, and can withstand greater friction and pressure. The surface of the polyurethane material is smooth and the hardness is high. It can effectively resist the wear caused by friction, shear force and other forces. At the same time, the polyurethane material has good elasticity and can self-recover. Even under greater wear or strong impact, it can maintain good wear resistance. The main function of the wear-resistant layer 10 is to enhance the wear resistance of the cable and facilitate the use of the cable.

[0026] Working mode: When working, by providing the fire-resistant layer 2, when a fire occurs, the fire-resistant layer 2 can effectively isolate the high temperature and flames and protect the conductor inside the cable, which can ensure that the cable can still maintain a certain operating time in the fire, buy more time for people to escape and put out the fire, and because the fire-resistant layer 2 has excellent fire resistance, it can slow down the spread of the fire and reduce the degree of damage to the surrounding environment and equipment. This is of great significance for protecting people's lives and property safety. By providing the filling layer 5, the filling layer 5 is made of polyethylene filler, and the polyethylene material has good flexibility, corrosion resistance and pressure resistance, and has a small specific gravity and good processing performance. In a low temperature environment, the polyethylene filler can maintain the insulation and filling function of the cable, prevent the appearance of gaps and moisture accumulation inside the cable, thereby improving the cable's anti-crack performance at low temperatures. The main function of the filling layer 5 is to fill the gaps inside the cable, enhance the cable's compressive strength and stability, and also improve the cable's anti-crack performance at low temperatures. The inner protective layer 6 is provided, and the inner protective layer 6 is made of silicone rubber. The silicone rubber has good low temperature resistance and outstanding heat resistance. The silicone rubber has excellent weather resistance and corrosion resistance, and can resist the erosion of ultraviolet rays, ozone, moisture and a variety of chemical substances. The silicone rubber has a very high resistivity, and its resistance value remains stable within a wide temperature and frequency range. Silicone rubber also has good resistance to high-voltage corona discharge and arc discharge. The physical and mechanical properties of silicone rubber such as tensile strength, tear strength and elongation are excellent. The main function of the inner protective layer 6 is to protect the insulating layer 3 from external mechanical damage and chemical corrosion. At the same time, the inner protective layer 6 has good cold resistance and weather resistance, and can resist the influence of low temperature environment and prevent the cable from freezing and cracking.

[0027] An armor layer 7 is provided, the main function of which is to enhance the mechanical strength of the cable and prevent external mechanical damage. An antifreeze layer 8 is provided, the antifreeze layer 8 is made of polystyrene foam, which also has good thermal insulation properties and can effectively reduce the heat loss inside the cable and maintain the normal working temperature of the cable in a low temperature environment. The main function of the antifreeze layer 8 is to enhance the antifreeze performance of the cable and facilitate its use in harsh environments.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low temperature frost cracking resistant cable, comprising a conductor (1), characterized in that: The conductor (1) is provided with a fire-resistant layer (2), an insulating layer (3) is provided on the fire-resistant layer (2), a shielding layer (4) is provided on the insulating layer (3), a filling layer (5) is provided on the shielding layer (4), an inner protective layer (6) is provided on the filling layer (5), an armor layer (7) is provided on the inner protective layer (6), an antifreeze layer (8) is provided on the armor layer (7), an outer protective layer (9) is provided on the antifreeze layer (8), and a wear-resistant layer (10) is provided on the outer protective layer (9).

2. The low-temperature frost-cracking-proof cable according to claim 1, characterized in that: The fire-resistant layer (2) is made of glass fiber.

3. The low-temperature frost cracking-proof cable according to claim 1, characterized in that: The insulating layer (3) is made of cross-linked polyethylene.

4. The low-temperature frost cracking-proof cable according to claim 1, characterized in that: The shielding layer (4) is made of copper tape.

5. The low temperature frost cracking resistant cable according to claim 1, characterized in that: The filling layer (5) is made of polyethylene filler, and the inner protective layer (6) is made of silicone rubber.

6. The low-temperature frost-cracking-proof cable according to claim 1, characterized in that: The armor layer (7) is made of steel strips, and the antifreeze layer (8) is made of polystyrene foam.

7. The low-temperature frost-cracking-proof cable according to claim 1, characterized in that: The outer protective layer (9) is made of rubber, and the wear-resistant layer (10) is made of polyurethane.

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