Cable with low-temperature-resistant and anti-frost-crack functions

Abstract

The utility model relates to the technical field of cables, and discloses a cable with low temperature resistance and frost crack prevention functions, which comprises four cable copper conductors, and the outer surfaces of the four cable copper conductors are coated with conductor insulating skins for protecting the cable copper conductors. When the cable is used, the heating wire starts to heat after being connected with a power supply, the outer surface of the constant-temperature layer is fixedly connected with the heat preservation layer, the heat preservation layer is made of a polyimide coating, polyimide has excellent anti-freezing and low-temperature-resistant performance, and the cold-resistant and anti-freezing performance of the cable can be further improved; the cable has the functions of heat insulation and heat preservation, low heat conductivity, stable heat insulation and heat preservation performance and excellent flame retardance, heat emitted by the heating wire can be well locked and is not prone to loss, and the stability of power transmission work is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a cable with low temperature resistance and anti-freezing cracking functions. Background Art

[0002] Cable is a wire product used to transmit electrical energy and information and realize electromagnetic energy conversion. It is made of one or more mutually insulated conductors wrapped with insulation and protective layers to transmit electricity or information from one place to another. Cable is usually a rope-like cable made of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center. The entire outside is covered with a highly insulating covering. The cable has an inner sheath and sometimes an outer sheath with high mechanical strength. The structure is relatively complex.

[0003] The material of the cable may become hard and brittle at low temperatures, resulting in reduced conductivity and insulation performance, and may even cause problems such as cracking and disconnection. When the cable is bent in a low temperature environment, it is very easy to crack, which greatly affects the normal use of the cable. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a cable with low-temperature resistance and anti-freezing cracking function, which has the advantages of good frost resistance, not easy to freeze and crack, high safety, good flame retardancy, etc., and solves the problem of easy cracking when bent in a low-temperature environment.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of good frost resistance, not easy to freeze and crack, high safety and good flame retardancy, the utility model provides the following technical solutions: a cable with low temperature resistance and anti-freezing and cracking function, comprising four cable copper conductors, the outer surfaces of the four cable copper conductors are all covered with conductor insulation skins for protecting the cable copper conductors, and the outer surfaces of the four conductor insulation skins are fixedly connected with a constant temperature layer for fixing the four cable copper conductors;

[0008] Among them, four heating wires for heating and heat preservation are fixedly connected in the constant temperature layer, and the heating wires are all located between two adjacent wire insulation skins.

[0009] Preferably, the outer surface of the constant temperature layer is fixedly connected with a thermal insulation layer, the material of the thermal insulation layer is a polyimide coating, and the outer surface of the thermal insulation layer is fixedly connected with a hexagonal anti-corrosion layer, the material of the hexagonal anti-corrosion layer is hydrogenated nitrile.

[0010] Preferably, the outer surface fixed sleeve of the hexagonal anti-corrosion layer is provided with an aerogel insulation layer, the material of the aerogel insulation layer is aerogel felt, and a plurality of reinforcing ribs for improving the tensile strength are provided in the gap between the aerogel insulation layer and the hexagonal anti-corrosion layer.

[0011] Preferably, the reinforcing ribs are made of metal wires or fibers, multiple elastic tape layers are wrapped and fixed on the outer surface of the aerogel insulation layer, the gaps between the multiple elastic tape layers are shrinkage gaps, and the outer surface of the elastic tape layer is fixedly sleeved with a flame retardant layer.

[0012] Preferably, the flame retardant layer is made of ceramic silicone rubber, the outer surface of the flame retardant layer is fixed with an outer waterproof layer, the outer surface of the outer waterproof layer is fixed with a wear-resistant layer, and the wear-resistant layer is made of polytetrafluoroethylene.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a cable with low temperature resistance and anti-freezing cracking function, which has the following beneficial effects:

[0015] 1. The cable with low-temperature resistance and anti-freeze cracking function will start to heat up after the heating wire is connected to the power supply when in use. The outer surface of the constant temperature layer is fixedly connected with an insulation layer. The material of the insulation layer is a polyimide coating. Polyimide has excellent antifreeze and low-temperature resistance, which can further improve the cold resistance and antifreeze performance of the cable. The material of the aerogel insulation layer is aerogel felt, which has the functions of heat insulation, low heat conductivity, stable heat insulation performance and excellent flame retardancy. It can lock the heat emitted by the heating wire, making it not easy to lose, and effectively ensure the stability of power transmission.

[0016] 2. The cable with low-temperature resistance and anti-freezing cracking function has a hexagonal anti-corrosion layer made of hydrogenated nitrile, which has excellent corrosion resistance, tear resistance and compression deformation resistance, good ozone resistance, sunlight resistance and weather resistance, and is more wear-resistant than nitrile rubber. It can effectively prevent corrosion of the cable and avoid cable exposure caused by corrosion from external factors.

[0017] 3. The cable with low-temperature resistance and anti-freezing cracking function can effectively prevent loosening by fixing and winding multiple elastic tape layers, thereby improving the integrity of the cable structure and the stability of the cable when transmitting signals. The gaps between the multiple elastic tape layers are shrinkage gaps. When the cable is bent at low temperatures, the elastic tape layers on the inner side of the bend squeeze each other, making the area of ​​the shrinkage gap smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable.

[0018] 4. The cable with low-temperature resistance and anti-freezing cracking function has a flame-retardant layer made of ceramic silicone rubber, which has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thus avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use.

[0019] 5. The cable with low temperature resistance and anti-freezing cracking function has a wear-resistant layer made of polytetrafluoroethylene. This material is resistant to acid, alkali, and various organic solvents. It also has good wear resistance and can effectively prevent damage caused by external wear during the use of the control cable, thereby improving the stability of data transmission of the control cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the cable of the utility model;

[0022] Figure 3 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1. Cable copper conductor; 2. Conductor insulation; 3. Constant temperature layer; 4. Heating wire; 5. Insulation layer; 6. Hexagonal anti-corrosion layer; 7. Reinforced ribs; 8. Aerogel insulation layer; 9. Elastic tape layer; 10. Shrinkage gap; 11. Flame retardant layer; 12. External waterproof layer; 13. Wear-resistant layer. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3The utility model provides a new technical solution: a cable with low temperature resistance and anti-freezing cracking function, comprising four cable copper conductors 1, the outer surfaces of the four cable copper conductors 1 are covered with conductor insulation skins 2 for protecting the cable copper conductors 1, the outer surfaces of the four conductor insulation skins 2 are fixedly connected with a constant temperature layer 3 for fixing the four cable copper conductors 1, and four heating wires 4 for heating and heat preservation are fixedly connected in the constant temperature layer 3, and the heating wires 4 are all located between two adjacent conductor insulation skins 2. When in use, the heating wires 4 will start to heat up after the power is turned on, and the outer surface of the constant temperature layer 3 is fixedly connected with a thermal insulation layer 5, and the material of the thermal insulation layer 5 is a polyimide coating. Polyimide has excellent antifreeze and low temperature resistance, which can further improve the cold resistance and antifreeze performance of the cable.

[0026] Furthermore, the outer surface of the thermal insulation layer 5 is fixedly connected with a hexagonal anti-corrosion layer 6, and the material of the hexagonal anti-corrosion layer 6 is hydrogenated nitrile butadiene rubber, which has excellent corrosion resistance, tear resistance and compression deformation resistance, good ozone resistance, sunlight resistance and weather resistance, and is more wear-resistant than nitrile butadiene rubber. It can effectively prevent corrosion of cables and avoid cable exposure caused by corrosion from external factors.

[0027] Furthermore, an aerogel thermal insulation layer 8 is fixedly sleeved on the outer surface of the hexagonal anti-corrosion layer 6. The material of the aerogel thermal insulation layer 8 is aerogel felt, which has the functions of heat insulation, low heat conductivity, stable heat insulation performance and excellent flame retardancy. It can lock the heat emitted by the heating wire 4 to prevent it from being lost, and effectively ensure the stability of power transmission.

[0028] Furthermore, a plurality of reinforcing ribs 7 for improving the tensile strength are provided in the gap between the aerogel insulation layer 8 and the hexagonal anti-corrosion layer 6. The reinforcing ribs 7 are made of metal wires or fibers, which can strengthen the flexibility and strength of the layer cable, thereby providing better protection.

[0029] Furthermore, multiple elastic tape layers 9 are wrapped and fixed on the outer surface of the aerogel insulation layer 8. The fixed winding of the multiple elastic tape layers 9 can effectively prevent loosening, improve the integrity of the cable structure and the stability of the cable when transmitting signals. The gap between the multiple elastic tape layers 9 is a shrinkage gap 10. When the cable is bent at a low temperature, the elastic tape layers 9 on the inner side of the bend squeeze each other, so that the area of ​​the shrinkage gap 10 becomes smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable.

[0030] Furthermore, a flame retardant layer 11 is fixedly provided on the outer surface of the elastic tape layer 9. The flame retardant layer 11 is made of ceramic silicone rubber and has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thereby avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use.

[0031] Furthermore, the outer surface of the flame retardant layer 11 is fixedly covered with an outer waterproof layer 12, and the outer surface of the outer waterproof layer 12 is fixedly covered with a wear-resistant layer 13. The wear-resistant layer 13 is made of polytetrafluoroethylene, which is resistant to acids and alkalis, and various organic solvents. It also has good wear resistance and can effectively prevent damage caused by external wear during use of the control cable, thereby improving the stability of data transmission of the control cable.

[0032] Working principle: When in use, the heating wire 4 will start to heat up after being connected to the power supply. The material of the aerogel insulation layer 8 is aerogel felt, which has the functions of heat insulation, low heat conductivity, stable heat insulation performance and excellent flame retardancy. It can lock the heat emitted by the heating wire 4 to prevent it from being lost and effectively ensure the stability of power transmission. The reinforcing rib 7 is made of metal wire or fiber, which can strengthen the flexibility and strength of the cable layer, so that it can provide better protection function.

[0033] When the cable is bent at low temperature, the elastic tape layers 9 on the inner side of the bend squeeze each other, so that the area of ​​the contraction gap 10 becomes smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable.

[0034] The flame retardant layer 11 is made of ceramic silicone rubber, which has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thus avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable with low temperature resistance and anti-freezing cracking function, comprising four cable copper conductors (1), characterized in that: The outer surfaces of the four cable copper conductors (1) are all covered with conductor insulation (2) for protecting the cable copper conductors (1), and the outer surfaces of the four conductor insulation (2) are fixedly connected with a constant temperature layer (3) for fixing the four cable copper conductors (1); Among them, four heating wires (4) for heating and heat preservation are fixedly connected in the constant temperature layer (3), and the heating wires (4) are all located between two adjacent wire insulation skins (2).

2. A cable with low temperature resistance and anti-freezing cracking function according to claim 1, characterized in that: The outer surface of the constant temperature layer (3) is fixedly connected with a heat-insulating layer (5), the material of the heat-insulating layer (5) is a polyimide coating, and the outer surface of the heat-insulating layer (5) is fixedly connected with a hexagonal anti-corrosion layer (6), the material of the hexagonal anti-corrosion layer (6) is hydrogenated nitrile butadiene.

3. The cable with low temperature resistance and anti-freezing cracking function according to claim 2, characterized in that: The outer surface of the hexagonal anti-corrosion layer (6) is fixedly covered with an aerogel insulation layer (8), the material of the aerogel insulation layer (8) is aerogel felt, and a plurality of reinforcing ribs (7) for improving tensile strength are arranged in the gap between the aerogel insulation layer (8) and the hexagonal anti-corrosion layer (6).

4. The cable with low temperature resistance and anti-freezing cracking function according to claim 3, characterized in that: The reinforcing ribs (7) are made of metal wires or fibers, a plurality of elastic tape layers (9) are wound and fixedly disposed on the outer surface of the aerogel thermal insulation layer (8), the gaps between the plurality of elastic tape layers (9) are shrinkage gaps (10), and a flame retardant layer (11) is fixedly disposed on the outer surface of the elastic tape layer (9).

5. The cable with low temperature resistance and anti-freezing cracking function according to claim 4, characterized in that: The flame retardant layer (11) is made of ceramic silicone rubber, the outer surface of the flame retardant layer (11) is fixedly sleeved with an outer waterproof layer (12), the outer surface of the outer waterproof layer (12) is fixedly sleeved with a wear-resistant layer (13), and the wear-resistant layer (13) is made of polytetrafluoroethylene.

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