Flexible wear-resistant bending-resistant degaussing cable

Abstract

The utility model relates to the technical field of degaussing cables, in particular to a flexible wear-resistant bending-resistant degaussing cable which comprises a conductor, an insulating layer, a first wrapping layer, a sheath layer and a wear-resistant layer which are sequentially arranged from inside to outside. The insulating layer is made of ethylene propylene rubber. The flexible wear-resistant bending-resistant degaussing cable has good flexibility, bending resistance and wear resistance, can pass a sheath wear resistance test, a cable bending resistance test, a pulse current test, a transverse watertight test and the like through detection, has a relatively large performance margin, can well meet the use working conditions of land degaussing cables, and can be widely applied to the field of land degaussing cables. The flexible wear-resistant bending-resistant degaussing cable is small in outer diameter, light in weight and more convenient to use and lay.

Description

Technical Field

[0001] The present application relates to the field of degaussing cables, and in particular to a flexible, wear-resistant and bending-resistant degaussing cable. Background Art

[0002] Cables for special equipment play a vital role in the electrical system of special equipment. Their performance and reliability are directly related to the overall safety and operating efficiency of special equipment. With the continuous advancement of special equipment technology, the performance requirements faced by cables for special equipment are also increasing. In particular, degaussing cables play a key role in the degaussing process of special equipment. In order to meet the diverse use environments, degaussing cables not only need to show stable electrical performance on special equipment, but also need to show good flexibility, bending resistance and wear resistance when used on land.

[0003] In the prior art, in order to solve the problem of sheath wear of degaussing cables during frequent bending and dragging, the hardness of the sheath material is usually enhanced or the thickness of the sheath is increased. For example, some technical solutions enhance the wear resistance of the sheath by using high molecular polymer materials or rubber composite materials. However, while these measures improve the wear resistance, they often sacrifice the flexibility and bending resistance of the cable, resulting in stress concentration when the bending radius is small. In the long run, it will cause damage to the insulation layer, thereby affecting the electrical performance and service life of the cable.

[0004] In addition, there are also technical solutions that attempt to improve the overall performance of the cable by improving the conductor structure. These solutions usually use a multi-layer twisted structure or special conductor materials to reduce the stress of the conductor during bending and reduce the friction between the conductor and the insulation layer. Although these methods have improved the bending resistance of the cable to a certain extent, they have not effectively solved the problem of sheath wear, so there is still room for improvement.

[0005] In summary, current technology has limitations in improving the flexibility, bending resistance and wear resistance of degaussing cables, and it is difficult to meet the stringent requirements of special equipment in multiple use environments. Therefore, how to comprehensively improve the performance of degaussing cables in these key performance aspects has become an urgent problem to be solved in the industry. Utility Model Content

[0006] In order to increase the service life of the degaussing cable, the present application provides a flexible, wear-resistant and bending-resistant degaussing cable.

[0007] The present application provides a flexible, wear-resistant and bending-resistant degaussing cable, which adopts the following technical solution:

[0008] A flexible wear-resistant and bend-resistant degaussing cable, comprising a conductor, an insulating layer, a wrapping layer, a sheath layer and a wear-resistant layer arranged in sequence from inside to outside. The sheath layer is made of chlorosulfonated polyethylene, and the insulating layer is made of ethylene propylene rubber.

[0009] Optionally, the conductor is formed by bunching and stranding tinned copper wires, wherein the tin layer thickness of the tinned copper wires is 0.8 - 1.8 um.

[0010] Optionally, the stranding of the conductor adopts the regular stranding method, and the stranding direction of the conductor is left-handed.

[0011] Optionally, the bunching direction of the conductor is left-handed.

[0012] By adopting the above technical solutions, the present application arranges a conductor, an insulating layer, a first wrapping layer, a sheath layer and a wear-resistant layer in sequence from inside to outside. At the same time, ethylene propylene insulating material with high electrical performance, high elongation rate and good flexibility is used as the main raw material of the insulating layer, and chlorosulfonated polyethylene with excellent weather resistance, high temperature resistance, anti-ion radiation, low temperature resistance, abrasion resistance and excellent mechanical properties is used as the main raw material of the sheath layer. At the same time, the tin layer thickness of the tinned copper wires in the present application is set to 0.8 - 1.8 um, reducing the possibility of the conductor oxidizing and turning black, and improving the service life of the flexible wear-resistant and bend-resistant degaussing cable. And the stranding of the present application adopts the regular stranding method, and the stranding direction is left-handed, and the bunching direction is left-handed. The bunching direction of the conductor and the stranding direction of the inner and outer layers are the same. When the conductor is bent, the inner layer and the outer layer will expand outward or contract inward at the same time, and there is no relative displacement between the inner and outer layer conductors. Therefore, the bending stress is smaller. This conductor structure can make the flexible wear-resistant and bend-resistant degaussing cable obtain good flexibility and better bend resistance, effectively improving the service life.

[0013] Optionally, a second wrapping layer is also wrapped outside the conductor, and the average overlapping rate of the wrapping is 15%.

[0014] By adopting the above technical solutions, the present application wraps another second wrapping layer outside the conductor, and adopts the wrapping principle of "small tension and small overlapping rate", further improving the flexibility and electrical performance of the conductor, so as to optimize the flexible wear-resistant and bend-resistant degaussing cable to obtain good flexibility and electrical performance.

[0015] Optionally, the wear-resistant layer is wrapped outside the sheath layer, and the average overlapping rate of the wrapping is 15 - 25%.

[0016] By adopting the above-mentioned technical scheme, the present application arranges a wrapping layer between the insulating layer and the sheath layer, and adopts a reasonable wrapping overlap ratio, so that the stress between the insulating layer and the sheath layer of the flexible wear-resistant and bending-resistant degaussing cable can be reduced when the bending radius is smaller, thereby improving the softness and bending resistance of the flexible wear-resistant and bending-resistant degaussing cable and prolonging its service life.

[0017] Optionally, the wear-resistant layer includes a rubber layer and a cotton cloth layer, and the rubber layer and the cotton cloth layer are fixedly connected.

[0018] Optionally, the rubber layer abuts against the jacket layer.

[0019] By adopting the above technical scheme, the present application wraps a layer of single-sided rubber cotton cloth tape outside the sheath layer as a wear-resistant layer, the inner surface of the tape is a rubber layer, and the outer surface is a wear-resistant cotton cloth tape. The wrapping overlap is appropriate, and the wrapping operation can tightly fit the single-sided rubber cotton cloth tape to the sheath layer, so that a wear-resistant layer is added outside the sheath layer, thereby improving the wear resistance of the flexible, wear-resistant and bending-resistant demagnetization cable.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] 1. The flexible wear-resistant and bending-resistant degaussing cable of the present application has good softness, bending resistance and wear resistance. After testing, it can pass the sheath wear test, cable bending test, pulse current test, lateral watertightness test, etc., and has a large performance margin, which can well meet the use conditions of the degaussing cable;

[0022] 2. The flexible, wear-resistant and bending-resistant degaussing cable of the present application has a small outer diameter and light weight, and is more convenient to use and lay;

[0023] 3. The flexible wear-resistant and bending-resistant degaussing cable of the present application has a simple production process, low manufacturing cost and good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional view of an embodiment of the present application.

[0025] Explanation of the reference numerals: 1. conductor; 11. second winding layer; 2. insulation layer; 3. first winding layer; 4. sheath layer; 5. wear-resistant layer; 51. rubber layer; 52. cotton cloth layer. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 This application is described in further detail.

[0027] The embodiment of the present application discloses a flexible, wear-resistant and bending-resistant degaussing cable.

[0028] Reference Figure 1A flexible, wear-resistant and bending-resistant degaussing cable comprises a conductor 1, an insulating layer 2, a first winding layer 3, a sheath layer 4 and a wear-resistant layer 5 which are arranged in sequence from the inside to the outside. The conductor 1 is composed of tinned copper wire, and the thickness of the tin layer is 1.25±0.25μm. The structure of the conductor 1 is 37 strands of wire with 56 single wires per strand. The conductor 1 is twisted in a regular twisting structure of 1+6+12+18. The bundled pitch diameter ratio of the conductor 1 strand is 30 times, the bundled direction is left, the outer diameter of the strand is 3.2mm, the inner layer conductor 1 has a twisted pitch diameter ratio of 20 times, the outer layer has a twisted pitch diameter ratio of 16 times, the inner and outer layers are twisted in a left direction, and the outer diameter of the twisted conductor 1 is The conductor 1 is 22.2 mm long and is bundled and twisted in the same direction, which reduces the gaps between the single wires of the conductor 1. If bending occurs, the inner and outer conductors 1 will move at the same time without relative displacement, and the bending stress generated is relatively small. In addition, a large pitch production process is adopted during twisting. In order to prevent the conductor 1 from becoming loose and floating when the pitch becomes larger, a second winding layer 11 is wrapped around the outside of the conductor 1. The principle of "small tension and small overlap rate" is followed to reduce the winding tension, and the average winding overlap rate is controlled at about 15%. The winding can be flat. The structure of the conductor 1 can enable the conductor 1 to obtain good softness, bending resistance and high electrical performance.

[0029] An insulating layer 2 is also provided outside the conductor 1 wrapped with the second wrapping layer 11. The ratio of the core to the sleeve of the insulating layer 2 is 47:56, the outer diameter of the core of the insulating layer 2 is 27.5 mm, and the first wrapping layer 3 is also wrapped outside the insulating layer 2, the average overlap rate of the first wrapping layer 3 is 15-25%, and the outer diameter of the cable core of the wrapping layer is 34.0 mm, and a sheath layer 4 is provided outside the wrapping layer, the nominal thickness of the sheath layer 4 is 2.6 mm, and the outer diameter of the sheath cable core is 34.0 mm, and a wear-resistant layer 5 is provided outside the sheath layer 4, the wear-resistant layer 5 includes a rubber layer 51 and a cotton cloth layer 52, and the rubber layer 51 and the cotton cloth layer 52 are fixedly connected, and the rubber layer 51 is in contact with the sheath layer 4 and connected as a whole, and the wrapping layer will not be empty or fall off in actual use.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flexible, wear-resistant and bending-resistant degaussing cable, characterized in that: include: A conductor (1), an insulating layer (2), a first wrapping layer (3), a sheath layer (4), and a wear-resistant layer (5) are arranged in sequence from the inside to the outside, wherein the sheath layer (4) is made of chlorosulfonated polyethylene, and the insulating layer (2) is made of EPDM rubber.

2. A flexible wear-resistant and bending-resistant degaussing cable according to claim 1, characterized in that: The conductor (1) is formed by bundling and twisting tinned copper wires, wherein the thickness of the tin layer of the tinned copper wires is 0.8-1.8 um.

3. A flexible wear-resistant and bending-resistant degaussing cable according to claim 2, characterized in that: The conductor (1) is twisted in a regular twisting manner, and the twisting direction of the conductor (1) is left-handed.

4. A flexible wear-resistant and bending-resistant degaussing cable according to claim 3, characterized in that: The bundling direction of the conductors (1) is left-handed.

5. A flexible wear-resistant and bending-resistant degaussing cable according to claim 1, characterized in that: The conductor (1) is further wrapped with a second wrapping layer (11), and the average wrapping overlap rate is 15%.

6. A flexible wear-resistant and bending-resistant degaussing cable according to claim 1, characterized in that: The wear-resistant layer (5) is wrapped around the outside of the sheath layer (4), and the average overlap rate of the wrapping is 15-25%.

7. A flexible wear-resistant and bending-resistant degaussing cable according to claim 1, characterized in that: The wear-resistant layer (5) comprises a rubber layer (51) and a cotton cloth layer (52), and the rubber layer (51) and the cotton cloth layer (52) are fixedly connected.

8. A flexible wear-resistant and bending-resistant degaussing cable according to claim 7, characterized in that: The rubber layer (51) abuts against the jacket layer (4).

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