Self-repairing cable

Abstract

The utility model discloses a self-repairing cable comprising a cable main body which comprises a cable insulation sleeve layer and a plurality of wire cores arranged in the cable insulation sleeve layer, and a plurality of solvent cavities are arranged between the cable insulation sleeve layer and an outer insulation sleeve layer; a repairing liquid is filled in a solvent cavity of a cable main body and has automatic fluidity and fast curing property. According to the utility model, by arranging the solvent cavity and filling quantitative repairing liquid in the solvent cavity, when an insulating layer on the surface of the cable is damaged, manual intervention is not needed, the internal repairing liquid can automatically flow to a damaged area for repairing, the repairing liquid is rapidly solidified after being contacted with air, the repairing effect takes effect immediately, the shutdown maintenance time of the cable is shortened, and the maintenance efficiency of the cable is improved. Compared with a traditional mode of increasing the thickness of an insulating layer or adopting a special material, the design cost is low, and the weight and the size of the cable are not increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a self-repairing cable. Background Art

[0002] In the prior art, cables are often affected by external environment, mechanical damage or other factors during use, resulting in damage to the insulation layer on the cable surface. The damaged insulation layer may cause the internal electrical performance of the cable to deteriorate, signal transmission to be blocked or safety hazards to increase, so a self-repairing cable design is proposed.

[0003] Existing solutions usually include increasing the thickness of cable insulation or using more wear-resistant materials to improve cable durability and safety. However, these solutions often increase the cost and weight of the cable and cannot automatically repair the insulation when it is damaged.

[0004] In order to overcome the above problems, this design proposes a self-repairing cable. The basic principle is to embed a repair fluid similar to tire sealant inside the cable. When the insulation layer on the surface of the cable is damaged, the internal repair fluid will flow to the damaged area and spontaneously solidify after contact with air to form a new insulation layer, thereby repairing the damaged area and restoring the integrity and function of the cable. Utility Model Content

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted by the utility model is: a self-repairing cable, comprising:

[0007] A cable body, comprising a cable insulation sheath and a plurality of wire cores located inside the cable insulation sheath, an outer insulation sheath is arranged outside the cable insulation sheath, and a plurality of solvent cavities are arranged between the cable insulation sheath and the outer insulation sheath;

[0008] A repair liquid is filled in the solvent cavity of the cable body and has automatic fluidity and rapid curing properties;

[0009] When the outer surface insulation layer of the cable body is damaged, the repair liquid will automatically flow to the damaged area and quickly solidify after contacting with the air to repair the damaged area.

[0010] In a preferred example, the utility model can be further configured as follows: the repair liquid has wear resistance and good insulation performance.

[0011] In a preferred example, the utility model can be further configured as follows: the repair liquid has a fast curing property and can form a cured layer within 30 minutes after contacting with air.

[0012] In a preferred embodiment, the present utility model can be further configured as follows: the repair liquid is composed of a polymer component, a filler component, and a solvent component; the polymer component includes an acrylate polymer; the filler component includes calcium silicate and silica gel; the solvent component includes acetone and toluene.

[0013] In a preferred embodiment, the present utility model can be further configured as follows: the cable body is a power cable, a communication cable, or an optical cable, the core is one of a metal wire or an optical fiber, and an isolation layer is provided on the surface of the core.

[0014] In a preferred embodiment, the present utility model can be further configured as follows: the solvent cavity is of a segmented structure, the length of each segment of the solvent cavity is 0.5 - 1 meter, and the number of the solvent cavities is several and they are evenly distributed in the circumferential direction on the outer periphery of the cable insulating sheath layer.

[0015] The beneficial effects achieved by the present utility model are as follows:

[0016] In the present utility model, by providing a solvent cavity and injecting a fixed amount of repair liquid therein, when the insulating layer on the surface of the cable is damaged, without manual intervention, the internal repair liquid will automatically flow to the damaged area for repair. After the repair liquid contacts the air, it quickly solidifies, and the repair effect takes effect immediately, reducing the cable downtime for maintenance. Compared with the traditional method of increasing the thickness of the insulating layer or using special materials, this design has a lower cost and does not increase the weight and volume of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 is a schematic diagram of the cotton and its partial enlarged structure of an embodiment of the present utility model.

[0019] Reference Numerals:

[0020] 1. Cable insulating sheath layer; 2. Outer insulating sheath layer; 3. Core; 4. Repair liquid; 11. Solvent cavity; 31. Isolation layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the purpose, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0022] The following describes a self - repairing cable provided by some embodiments of the present utility model with reference to the accompanying drawings.

[0023] Combined with Figure 2As shown, the utility model provides a self-repairing cable, comprising:

[0024] A cable body, comprising a cable insulation sheath 1 and a plurality of wire cores 3 located inside the cable insulation sheath 1, an outer insulation sheath 2 is provided outside the cable insulation sheath 1, and a plurality of solvent cavities 11 are provided between the cable insulation sheath 1 and the outer insulation sheath 2;

[0025] A repair liquid 4, which is filled in the solvent cavity 11 of the cable body and has automatic fluidity and rapid curing properties;

[0026] When the outer surface insulation layer of the cable body is damaged, the repair liquid 4 will automatically flow to the damaged area and quickly solidify after contacting with the air to repair the damaged area.

[0027] In this embodiment, the repairing liquid 4 has wear resistance and good insulation performance.

[0028] In this embodiment, the repair liquid 4 has a fast curing property and can form a cured layer within 30 minutes after contacting with air.

[0029] In this embodiment, the repairing liquid 4 is composed of a polymer component, a filler component and a solvent component.

[0030] In this embodiment, the polymer component includes an acrylate polymer.

[0031] In this embodiment, the filler composition includes calcium silicate and silica gel.

[0032] In this embodiment, the solvent composition includes acetone and toluene.

[0033] Specifically, the acrylate polymer has good adhesion and elasticity, and can firmly adhere to the insulation layer on the cable surface to form a solid repair layer; the calcium silicate filler has good fluidity and filling properties, and can quickly fill the cracks and holes in the insulation layer on the cable surface, thereby enhancing the viscosity and filling performance of the repair liquid; the acetone solvent can dissolve the polymer component and the filler component, maintain the stability and fluidity of the repair liquid, and promote full contact and curing between the repair liquid and the insulation layer on the cable surface.

[0034] In this embodiment, the cable body is a power cable, a communication cable or an optical cable, the core 3 is a metal wire or an optical fiber, and an isolation layer 31 is provided on the surface of the core 3 .

[0035] In this embodiment, the solvent cavity 11 is a segmented structure, and the length of each solvent cavity 11 is 0.5-1 meter. The number of solvent cavities 11 is several and evenly distributed on the outer periphery of the cable insulation sheath 1 in the circumferential direction.

[0036] Specifically, the use of multiple solvent cavities 11 for dispensing the repair fluid 4 can effectively reduce the filling volume of the repair fluid 4, and in the case of local damage to the cable surface, the repair fluid 4 can quickly respond to repair the cable.

[0037] The working principle and usage process of the present utility model:

[0038] Production process: In a protective gas environment, after the cable insulating sheath layer 1 and the outer insulating sheath layer 2 are extruded and formed on the surface of the wire core 3, the cable insulating sheath layer 1 and the outer insulating sheath layer 2 are an integral whole, and there are several solvent cavities 11 inside. An appropriate amount of repair fluid 4 is injected into each solvent cavity 11 through a hypodermic syringe, and the repair fluid 4 can self-repair the pinhole;

[0039] Insulating layer damage detection: When the insulating layer on the cable surface is damaged, air enters the inside of the solvent cavity 11;

[0040] Repair fluid flow: Once the air contacts the solvent cavity 11, the internal repair fluid will automatically flow to the damaged area. The repair fluid has a certain fluidity and can be evenly coated on the inner wall surface of the solvent cavity 11, and can quickly fill the cracks and holes in the cable surface insulating layer.

[0041] Curing upon contact with air: After the repair fluid contacts the air, the polymer component in it will spontaneously cure to form a new insulating layer. This process usually takes a few minutes to complete. The cured new insulating layer has good adhesion and wear resistance.

[0042] Function restoration: The new insulating layer can effectively repair the damaged area and restore the integrity and function of the cable. The repaired cable can continue to be used normally without additional maintenance or repair.

[0043] Although the embodiments of the present utility model 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 principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A self-repairing cable, characterized in that: include: A cable body, comprising a cable insulation sheath (1) and a plurality of wire cores (3) located inside the cable insulation sheath (1), an outer insulation sheath (2) being provided outside the cable insulation sheath (1), and a plurality of solvent cavities (11) being provided between the cable insulation sheath (1) and the outer insulation sheath (2); A repair liquid (4) is filled in the solvent cavity (11) of the cable body and has automatic fluidity and rapid curing properties; When the insulation layer on the outer surface of the cable body is damaged, the repair liquid (4) will automatically flow to the damaged area and quickly solidify after coming into contact with air, thereby repairing the damaged area.

2. The self-repairing cable according to claim 1, characterized in that: The repair liquid (4) has wear resistance and insulation properties.

3. The self-repairing cable according to claim 2, characterized in that: The repair liquid (4) has rapid curing properties and can form a cured layer within 30 minutes after coming into contact with air.

4. The self-repairing cable according to claim 3, characterized in that: The repair liquid (4) consists of a polymer component, a filler component and a solvent component.

5. The self-repairing cable according to claim 4, characterized in that: The polymer component includes an acrylate polymer.

6. The self-repairing cable according to claim 5, characterized in that: The filler component includes calcium silicate and silica gel.

7. The self-repairing cable according to claim 6, characterized in that: The solvent component includes acetone and toluene.

8. The self-repairing cable according to any one of claims 1 to 7, characterized in that: The cable body is a power cable, a communication cable or an optical cable, the wire core (3) is a metal wire or an optical fiber, and an isolation layer (31) is provided on the surface of the wire core (3).

9. The self-repairing cable according to any one of claims 1 to 7, characterized in that: The solvent cavity (11) is a segmented structure, and the length of each segment of the solvent cavity (11) is 0.5-1 meter. The number of the solvent cavities (11) is several and they are evenly distributed in a circumferential direction on the outer periphery of the cable insulation sheath (1).

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