Carbon fiber heating high-temperature-resistant composite cable

Abstract

The utility model provides a carbon fiber heating high-temperature-resistant composite cable comprising a carbon fiber heating conductor, and an inner protection layer, a high-temperature-resistant layer, a first insulating layer, a shielding layer, a second insulating layer and an outer sheath are sequentially wrapped outside the carbon fiber heating conductor from inside to outside. A shielding layer is arranged on the outer surface of the outer sheath, a first insulating layer is arranged on the outer surface of the outer sheath, a second insulating layer is arranged on the outer surface of the outer sheath, a grounding wire is arranged between the first insulating layer and the shielding layer or between the second insulating layer and the shielding layer, and annular heat dissipation rings are fixedly arranged on the outer surface of the outer sheath in a sleeving mode and are arranged in an array mode in the axial direction of the outer sheath. An inner protection layer, a high-temperature-resistant layer, a first insulating layer, a shielding layer, a second insulating layer and an outer sheath are sequentially arranged in a wrapping mode from inside to outside so that the insulating performance and the high-temperature-resistant performance of the carbon fiber heating cable can be improved. Through the heat dissipation ring fixedly sleeving the outer surface of the outer sheath, the wear resistance of the cable is improved, the heat dissipation area of the cable is increased, the heat transfer performance is improved, and the heat utilization rate is further increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a carbon fiber heating high temperature resistant composite cable. Background Art

[0002] Carbon fiber heating cable is made into a cable structure, uses electricity as energy, and utilizes carbon fiber heating conductors for heating. Carbon fiber is a non-metallic semiconductor material, which is essentially different from traditional metal cables. Traditional electric heating materials use metal alloys as electric heating elements, which are prone to generate electromagnetic radiation after power is turned on, which will have adverse effects on the elderly, children, and pregnant women. Carbon fiber heating cables use non-metallic heating elements, so they do not generate electromagnetic radiation waves that are harmful to the human body. In addition, carbon fiber heating cables radiate energy outward in the form of infrared rays, and their thermal conversion efficiency can reach more than 99%. Compared with the same type of metal heating cables, carbon fiber heating cables save more than 20% energy.

[0003] At present, the common carbon fiber heating cable is mainly composed of a carbon fiber heating conductor, a single-layer insulation and an outer sheath. Its insulation performance, high temperature resistance and heat transfer performance are poor, and the heat utilization rate is low. Utility Model Content

[0004] The main purpose of the utility model is to provide a carbon fiber heating high temperature resistant composite cable to solve the problems of poor insulation performance, high temperature resistance and heat transfer performance in the prior art.

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

[0006] A carbon fiber heating high-temperature resistant composite cable comprises a carbon fiber heating conductor, the outer side of the carbon fiber heating conductor is sequentially covered with an inner protective layer, a high-temperature resistant layer, a first insulating layer, a shielding layer, a second insulating layer and an outer sheath from the inside to the outside, a grounding wire is arranged between the first insulating layer and the shielding layer or between the second insulating layer and the shielding layer, an annular heat dissipation ring is fixedly arranged on the outer surface of the outer sheath, the central axis of the heat dissipation ring is colinear with the central axis of the outer sheath, and is arranged in an axial array along the outer sheath.

[0007] Furthermore, the carbon fiber heating conductor is formed by winding a single carbon fiber heating wire or a plurality of carbon fiber heating wires.

[0008] Furthermore, the inner protective layer is a mica sheathing layer.

[0009] Furthermore, the high temperature resistant layer is a Teflon high temperature resistant layer or a radiation cross-linked high temperature resistant layer.

[0010] Furthermore, the first insulating layer is a cross-linked polyethylene insulating layer.

[0011] Furthermore, the second insulating layer is a silicone insulating layer.

[0012] Furthermore, the shielding layer is an aluminum-magnesium alloy steel mesh shielding layer.

[0013] Furthermore, the outer sheath is made of aluminum alloy.

[0014] Furthermore, the heat dissipation ring is made of PVC material, and a plurality of the heat dissipation rings form a wave structure along the axial direction of the outer sheath.

[0015] The beneficial effects of the utility model are:

[0016] 1. Through the outer side of the carbon fiber heating conductor, the inner protective layer, the high temperature resistant layer, the first insulating layer, the shielding layer, the second insulating layer and the outer sheath are sequentially covered from the inside to the position to increase the insulation performance and high temperature resistance of the carbon fiber heating cable; through the heat dissipation ring fixedly sleeved on the outer surface of the outer sheath, the wear resistance of the cable is increased while the heat dissipation area of ​​the cable is increased, the heat transfer performance is improved, and the utilization rate of heat is increased.

[0017] 2. By setting a grounding wire between the first insulating layer and the shielding layer or between the second insulating layer and the shielding layer, the safety factor can be improved and its service life can be extended.

[0018] 3. By setting the outer sheath to aluminum alloy material, it is helpful to increase the overall mechanical strength, tensile strength and heat dissipation strength of the cable.

[0019] 4. By adding an aluminum-magnesium alloy steel mesh shielding layer, the cable can dissipate heat evenly, have good bending toughness, and be easy to lay. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a three-dimensional diagram of the carbon fiber heating high temperature resistant composite cable of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the carbon fiber heating high temperature resistant composite cable of the utility model.

[0023] Description of Reference Numerals

[0024] 1. Carbon fiber heating conductor; 2. Inner protective layer; 3. High temperature resistant layer; 4. First insulating layer; 5. Shielding layer; 6. Second insulating layer; 7. Outer sheath; 8. Grounding wire; 9. Heat dissipation ring. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] See also Figure 1 to Figure 2 As shown, a carbon fiber heating high temperature resistant composite cable comprises a carbon fiber heating conductor 1, an inner sheath 2, a high temperature resistant layer 3, a first insulating layer 4, a grounding wire 8 shielding layer 5, a second insulating layer 6 and an outer sheath 7. The carbon fiber heating conductor 1 is wound by a single carbon fiber heating wire or multiple carbon fiber heating wires, and is used to connect to a power source for heating. The inner sheath 2 is a mica sheath, which is wound around the outside of the carbon fiber heating conductor 1. The mica sheath can effectively wrap the wire core, improve the insulation, fire resistance and high temperature resistance of the cable, and on the other hand, the mica sheath can further tighten the hybrid wire core, effectively preventing the carbon fiber heating conductor 1 from loosening.

[0027] The high temperature resistant layer 3 is coated on the outside of the inner protective layer 2. The high temperature resistant layer 3 is a Teflon high temperature resistant layer or a radiation cross-linked high temperature resistant layer. The use range of Teflon is minus 200 degrees Celsius to 260 degrees Celsius. It has good high temperature resistance and can still maintain good stability in a continuous high temperature environment. The radiation cross-linked high temperature resistant layer can work at high temperatures without melting after radiation cross-linking treatment, and has the advantages of chemical corrosion resistance, wear resistance, and electrical insulation.

[0028] The first insulating layer 4 is coated on the outside of the high temperature resistant layer 3. In this embodiment, the first insulating layer 4 is a cross-linked polyethylene insulating layer. The cross-linked polyethylene is polyethylene in which macromolecules are cross-linked under the action of a cross-linking agent. On the basis of insulation, its heat resistance and other properties can be improved.

[0029] The shielding layer 5 is coated on the outside of the first insulating layer 4. The shielding layer 5 is an aluminum-magnesium alloy steel mesh shielding layer. The aluminum-magnesium alloy steel mesh shielding layer can make the cable dissipate heat evenly, has good bending toughness, and is easy to lay.

[0030] The second insulating layer 6 is coated on the outside of the shielding layer 5. The second insulating layer 6 is a silicone insulating layer. The silicone insulating layer has good insulation performance and also has good high temperature resistance, low temperature resistance, moisture resistance and waterproof performance, further improving the overall insulation and heat resistance of the inductor.

[0031] The grounding wire 8 is arranged between the first insulating layer 4 and the shielding layer 5 or between the second insulating layer 6 and the shielding layer 5. The grounding wire 8 is used to improve the safety factor and extend its service life.

[0032] The outer sheath 7 is covered on the outside of the second insulating layer 6. The outer sheath 7 is made of aluminum alloy. The aluminum alloy outer jacket layer can prevent oxidation and resist foreign impact, which is beneficial to increase the overall mechanical strength and tensile strength of the cable to increase the service life of the cable. Among them, the outer surface of the outer sheath 7 is fixed with an annular heat dissipation ring 9. The central axis of the heat dissipation ring 9 is colinear with the central axis of the outer sheath 7, and is arranged in an axial array along the outer sheath 7. The heat dissipation ring 9 can further prevent the cable from being worn during movement and dragging, causing damage to the outer sheath 7 of the cable, affecting the life of the cable, and at the same time increasing the surface area of ​​the cable, that is, increasing the heat dissipation area of ​​the cable. In this embodiment, the heat dissipation ring 9 is made of PVC material, and multiple heat dissipation rings 9 form a wave structure along the axial direction of the outer sheath 7, further increasing the heat dissipation area of ​​the cable when the cable is buried, that is, increasing the heat transfer area with the surface of the object, improving the heat transfer performance, and increasing the utilization rate of heat.

[0033] The above description is only a preferred embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A carbon fiber heating high temperature resistant composite cable, characterized in that: The invention comprises a carbon fiber heating conductor (1), the outer side of the carbon fiber heating conductor (1) is covered with an inner protective layer (2), a high temperature resistant layer (3), a first insulating layer (4), a shielding layer (5), a second insulating layer (6) and an outer sheath (7) in sequence from the inside to the outside, a grounding wire (8) is provided between the first insulating layer (4) and the shielding layer (5) or between the second insulating layer (6) and the shielding layer (5), and an annular heat dissipation ring (9) is fixedly provided on the outer surface of the outer sheath (7), the central axis of the heat dissipation ring (9) is colinear with the central axis of the outer sheath (7), and the heat dissipation ring (9) is arranged in an axial array along the outer sheath (7).

2. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The carbon fiber heating conductor (1) is formed by winding a single carbon fiber heating wire or a plurality of carbon fiber heating wires.

3. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The inner protective layer (2) is a mica cladding layer.

4. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The high temperature resistant layer (3) is a Teflon high temperature resistant layer or a radiation cross-linked high temperature resistant layer.

5. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The first insulating layer (4) is a cross-linked polyethylene insulating layer.

6. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The second insulating layer (6) is a silicone insulating layer.

7. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The shielding layer (5) is an aluminum-magnesium alloy steel mesh shielding layer.

8. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The outer sheath (7) is made of aluminum alloy.

9. The carbon fiber heating high temperature resistant composite cable according to claim 1, characterized in that: The heat dissipation ring (9) is made of PVC material, and a plurality of the heat dissipation rings (9) form a wave structure along the axial direction of the outer jacket (7).

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