High-voltage cable for industrial park

Abstract

The invention relates to a high-voltage cable for an industrial park, which is applied to the field of cables, and is characterized in that a waterproof cloth spirally wraps the outer side of a cable joint of a cable body, two ends of the waterproof cloth are pressed and sealed by a cloth pressing ring, and the cable joint is subjected to effective preliminary waterproof protection through the spiral waterproof cloth; deformation bodies and hard self-checking strips which are distributed in a staggered mode are arranged on the inner side of the waterproof cloth, the permeable cloth on the outermost side serves as a water plugging layer, absorbs external moisture firstly, seals the edge of the waterproof cloth after expanding, and effectively blocks entering of follow-up moisture, the middle deformation bodies serve as transition layers, so that the moisture is not prone to spreading deep, and the hard self-checking strips serve as detection layers, so that the detection efficiency is improved. When the cable connector meets water, the tension sensor is triggered to generate obvious data change, waterproof early warning is carried out on rear-end monitoring personnel, the innermost deformation body serves as a delay layer, time is provided for on-site processing of the personnel, and waterproof protection on the cable connector is effectively improved.

Description

Technical Field

[0001] The present invention relates to a high-voltage cable, and in particular to a high-voltage cable for industrial parks applied in the cable field. Background Art

[0002] With the rapid development of my country's power grid construction, the demand for high-voltage power cables has increased rapidly. However, high-voltage cables are affected by human factors, construction and laying environment, and many combustion and explosion accidents caused by cable failures occur every year at home and abroad, causing immeasurable losses. This is especially true at cable joints, which generate severe heat due to contact resistance and are easily affected by ambient temperature, humidity, and other factors, resulting in a higher probability of failure.

[0003] To address the aforementioned issues, Chinese patent CN113241719B discloses a waterproof and explosion-proof high-voltage cable intermediate joint and its use method. The joint comprises, arranged in order from the inside out, a conductor connection tube, an internal shielding metal sleeve, a temperature sensor, a rubber body, a first insulating waterproof filling layer, a partial discharge sensor, a first flame-retardant waterproof mixture layer, a copper shell, a second insulating waterproof filling layer, and an explosion-proof shell. The present invention has the functions of real-time temperature and partial discharge measurement, can constantly monitor the product's operating status, and obtain information immediately upon abnormalities, allowing for rapid response. While maintaining both waterproof and explosion-proof properties, the joint can address damage to surrounding cable lines, power facilities, and personnel caused by explosions resulting from sudden failures, thereby fully ensuring the normal operation of the product.

[0004] The specification of Chinese patent CN106961089B discloses a waterproof, explosion-proof and fire-extinguishing protective shell for a high-voltage cable intermediate joint. It uses corrosion-resistant and highly elastic rubber to ensure long-term, effective and reliable waterproofing. Ventilation and heat dissipation pipes are added inside the protective shell to effectively reduce the operating temperature of the joint, greatly reducing the risk of failure and increasing the explosion-proof strength of the shell. The left and right halves are equipped with integrally wound high-strength explosion-proof fiber tubes to achieve effective explosion protection. A fire detection tube is wrapped around the outside of the joint shell and connected to a fire extinguisher tank, which can quickly extinguish and cool the fire, prevent fire from occurring, and improve reliability.

[0005] Although the existing technology provides waterproof protection for the cable joint area, due to long-term laying, moisture in the environment will gradually invade the vicinity of the cable joint. The existing technology lacks a means to detect whether the cable joint is corroded by moisture, and there is a problem of untimely discovery and treatment, which creates a hidden danger of cable short circuit and fire accidents. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the prior art lacks a means to detect whether the cable joints are corroded by environmental moisture, which creates a hidden danger of cable short circuit fire accidents.

[0007] In order to solve the above problems, the present invention provides a high-voltage cable for industrial parks, comprising a pair of cable bodies and a cable connector connecting the pair of cable bodies, the outer side of the cable connector is wrapped with a spiral waterproof cloth, and the two ends of the waterproof cloth respectively extend to the outside of the pair of cable bodies, the outer ends of the cable bodies are sleeved with a pair of cloth pressing rings, the pair of cloth pressing rings form an annular structure and are tightly sleeved on the outer ends of the waterproof cloth, the pair of cloth pressing rings are connected by fasteners, one end face of the waterproof cloth is fixedly connected to a plurality of deformable bodies, the deformable bodies include permeable cloth and water-blocking yarn filled between the permeable cloth and the waterproof cloth, the edge end of the permeable cloth is fixedly connected to the surface of the waterproof cloth, wherein a hard self-test strip is provided between the pair of permeable cloths, one end face of the hard self-test strip passes through the cable body and is flush with the cable body in a horizontally stretched state, the hard self-test strip is connected to an induction box by bolts, and the induction box and the permeable cloth are located on different sides of the cable body; The hard self-test strip includes a long box body, the inner side wall of the long box body is fixedly connected to a plurality of evenly distributed deformation blocks, a pair of inner end walls of the deformation blocks are fixedly connected to one end of a pull rope, the other end of the pull rope is movably passed through the long box body and extends to the outside, the sensing box includes a box body, the interior of the box body is fixedly connected to a tension sensor, the sensing end of the tension sensor is fixedly connected to a pair of elastic ropes, the pair of elastic ropes are movably passed through the box body and are respectively tied to a pair of pull ropes.

[0008] As a further supplement to the present application, the interior of the long box is filled with absorbent cotton threads, and the outer surface of the long box is provided with evenly distributed mesh holes, and the mesh holes and the water-permeable cloth are both located on the same side of the cable body.

[0009] As a further supplement to the present application, a plurality of deformation blocks are staggeredly distributed up and down, and the pull rope is interspersed between the plurality of staggered deformation blocks.

[0010] As a further supplement to this application, a pair of side ends of the box are fixedly connected to side panels, a pair of screw grooves are opened at the end of the long box close to the induction box, bolts are threadedly connected between the side panels and the screw grooves, and a rubber pad is fixedly connected to the end of the box close to the hard self-inspection strip.

[0011] As a further supplement to this application, a rope hole is provided at one end of the long box body close to the induction box, and the pull rope passes through the rope hole and extends to the outside. A through hole corresponding to the rope hole is provided at one end of the box body close to the hard self-inspection strip.

[0012] As a further supplement to the present application, a sponge layer is fixedly connected to one end surface of the waterproof cloth, the sponge layer is located on one side of the permeable cloth, and the sponge layer and the permeable cloth are both located on the same side of the cable body.

[0013] As another improvement of the present application, a soft self-inspection strip is used instead of a hard self-inspection strip. The soft self-inspection strip includes a pair of single-port frames, an intermediate ring is provided between the pair of single-port frames, and multiple chain rings are provided between the single-port frames and the intermediate rings. Absorbent cloth covers are fixedly connected between the single-port frame and an adjacent chain ring, between the intermediate ring and an adjacent chain ring, and between adjacent chain rings.

[0014] As another improved supplement to the present application, a pair of intermediate rings are provided with through holes corresponding to the through holes on the induction box at one end close to the induction box, and one end of the connecting rope is fixedly connected to the inner end wall of the single-port frame, and the other end of the connecting rope is movable through the through hole and extends to the outside.

[0015] As another improved supplement to the present application, the inner side walls of the single-mouth frame and the chain are fixedly connected with expansion blocks, and the multiple expansion blocks are also staggered up and down, the connecting rope is interspersed between the multiple expansion blocks, and the inside of the absorbent cloth cover is filled with cotton thread.

[0016] As another improved supplement to the present application, a pair of side ends of the intermediate ring are fixedly connected to a mounting plate, one end face of both the intermediate ring and the mounting plate passes through the cable body and is flush with the cable body in a horizontally stretched state, and the end of the box body close to the soft self-test strip is connected to the mounting plate by a screw.

[0017] To sum up, the present application wraps the waterproof cloth in a spiral shape around the outside of the cable connector of the cable body, and uses a cloth pressure ring to compress and seal the two ends of the waterproof cloth. The spiral waterproof cloth provides effective preliminary waterproof protection for the cable connector. The inner side of the waterproof cloth is provided with staggered deformable bodies and hard self-test strips. The outermost permeable cloth serves as a water-blocking layer, which first absorbs external moisture and then seals the edge of the waterproof cloth after expansion, effectively blocking the subsequent entry of moisture. The middle deformable body serves as a transition layer, making it difficult for moisture to spread to deeper depths. The hard self-test strip serves as a detection layer, which triggers a significant data change in the tension sensor when encountering water, and provides a waterproof warning to the back-end monitoring personnel. The innermost deformable body serves as a delay layer, providing time for personnel to handle on-site, effectively improving the waterproof protection of the cable connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The first embodiment of the present application is a stereoscopic Figure 1 ; Figure 2 The first embodiment of the present application is a stereoscopic Figure 2 ; Figure 3 This is a three-dimensional schematic diagram of the installation process of the first embodiment of this application; Figure 4 This is a perspective view of the inner side of the waterproof cloth of the first embodiment of the present application when unfolded; Figure 5This is a perspective view of the outer side of the waterproof cloth of the first embodiment of the present application when unfolded; Figure 6 This is a three-dimensional diagram of the first embodiment of the present application when the hard self-test strip and the induction box are not connected; Figure 7 This is a front structural diagram of the waterproof cloth after installation according to the first embodiment of the present application; Figure 8 This is a schematic side structural diagram of the first embodiment of the present application when the hard self-test strip and the induction box are not connected; Figure 9 This is a side structural diagram of the hard self-test strip and the induction box when connected in the first embodiment of the present application; Figure 10 This is a schematic side view of the structure of the hard self-test strip in the first embodiment of the present application when it comes into contact with water; Figure 11 This is a three-dimensional diagram of the soft self-test strip on the waterproof cloth according to the second embodiment of the present application; Figure 12 This is a three-dimensional diagram of the soft self-test strip and the induction box when connected in the second embodiment of the present application; Figure 13 This is a schematic side structural diagram of the soft self-test strip according to the second embodiment of the present application.

[0019] Description of the numbers in the figure: 1 Cable body, 2 Waterproof cloth, 3 Cloth pressure ring, 4 Hard self-test strip, 401 Mesh, 402 Rope hole, 403 Screw groove, 41 Long box, 42 Deformation block, 43 Absorbent cotton thread, 44 Pull rope, 5 Induction box, 51 Box, 52 Side panel, 53 Rubber pad, 54 Tension sensor, 55 Elastic rope, 6 Permeable cloth, 7 Sponge layer, 8 Soft self-test strip, 81 Single-port frame, 82 Link, 83 Middle ring, 8301 Perforation, 84 Absorbent cloth cover, 85 Mounting plate, 86 Link, 87 Expansion block, 88 Cotton thread. DETAILED DESCRIPTION

[0020] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0021] The first implementation method: The present invention provides a high voltage cable for industrial parks, please refer to Figure 1 、 Figure 2 and Figure 3, including a pair of cable bodies 1 and a cable connector connecting the pair of cable bodies 1, the outside of the cable connector is wrapped with a spiral waterproof cloth 2 (the cable connector is wrapped inside the waterproof cloth 2, so it is not drawn), and the two ends of the waterproof cloth 2 respectively extend to the outside of the pair of cable bodies 1, and the outer ends of the cable bodies 1 are provided with a pair of cloth pressing rings 3. The pair of cloth pressing rings 3 form a ring structure and are tightly mounted on the outer ends of the waterproof cloth 2. The pair of cloth pressing rings 3 are connected by fasteners, and the two ends of the spiral waterproof cloth 2 are fixed by the cloth pressing rings 3, so that the waterproof cloth 2 is not easy to loosen.

[0022] See also Figure 3 and Figure 4 One end face of the waterproof cloth 2 is fixedly connected to a plurality of deformation bodies, the deformation body includes a water-permeable cloth 6 and a water-blocking yarn filled between the water-permeable cloth 6 and the waterproof cloth 2. The edge end of the water-permeable cloth 6 is fixedly connected to the surface of the waterproof cloth 2. Moisture and water can be absorbed by the water-blocking yarn through the water-permeable cloth 6. A hard self-test strip 4 is provided between a pair of water-permeable cloths 6. One end face of the hard self-test strip 4 passes through the cable body 1 and is flush with the cable body 1 in a horizontally stretched state. Figure 2 and Figure 5 As shown, the hard self-test strip 4 is connected to the induction box 5 by bolts, and the induction box 5 and the water-permeable cloth 6 are located on different sides of the cable body 1.

[0023] See also Figure 8 The hard self-test strip 4 includes a long box body 41, and the inner wall of the long box body 41 is fixedly connected with a plurality of uniformly distributed deformation blocks 42. The deformation blocks 42 are made of water-swelling rubber material. A pair of inner end walls of the deformation blocks 42 are fixedly connected with one end of a pull rope 44. The other end of the pull rope 44 movably passes through the long box body 41 and extends to the outside. The sensing box 5 includes a box body 51, and the interior of the box body 51 is fixedly connected with a tension sensor 54. The sensing end of the tension sensor 54 is fixedly connected with a pair of elastic ropes 55. The pair of elastic ropes 55 movably passes through the box body 51 and is respectively tied to the pair of pull ropes 44. The interior of the long box body 41 is filled with absorbent cotton threads 43, and the outer surface of the long box body 41 is provided with uniformly distributed mesh holes 401. The mesh holes 401 are arranged on the outer surface of the long box body 41. 01 and the permeable cloth 6 are located on the same side of the cable body 1, and multiple deformation blocks 42 are staggered up and down. The pull rope 44 is interspersed between the multiple deformation blocks 42 that are staggered. Moisture and water can enter the interior of the long box 41 through the mesh 401 and be absorbed by the absorbent cotton thread 43. The deformation block 42 swells when it comes into contact with the moist absorbent cotton thread 43, thereby squeezing the pull rope 44. The pull rope 44 pulls the elastic rope 55, causing the elastic rope 55 to be elastically stretched. The tension of the elastic rope 55 on the tension sensor 54 increases, which increases the monitoring data of the tension sensor 54. Therefore, the data change of the tension sensor 54 can effectively reflect whether there is moisture entering the interior of the spiral waterproof cloth 2.

[0024] Combine Figure 6 and Figure 8 As shown, a rope hole 402 is further provided at one end of the long box body 41 close to the induction box 5, and the pull rope 44 is movable through the rope hole 402 and extends to the outside. A through hole corresponding to the rope hole 402 is provided at one end of the box body 51 close to the hard self-test strip 4, and a pair of side ends of the box body 51 are fixedly connected to side panels 52. A pair of screw grooves 403 are provided at one end of the long box body 41 close to the induction box 5, and bolts are threadedly connected between the side panels 52 and the screw grooves 403. A rubber pad 53 is fixedly connected to one end of the box body 51 close to the hard self-test strip 4, which can improve the sealing between the two and prevent external moisture from directly entering the hard self-test strip 4 through the gap between the two. Before use, the hard self-test strip 4 and the induction box 5 are in an unconnected state. After the waterproof cloth 2 is spirally wrapped around the outer end of the cable connector, the hard self-test strip 4 is on the outermost layer of the spiral waterproof cloth 2. At this time, first stretch the elastic rope 55 out of the box body 51 and tie it to the end of the pull rope 44. After completion, align the induction box 5 with the hard self-test strip 4, and fix the side plate 52 to the long box body 41 with bolts. Figure 9 As shown, the rope hole 402 is connected to the through hole, and the tension sensor 54 can recover a certain length, but is still in a slightly stretched state, generating tension on the tension sensor 54. In the absence of external force, the tension data monitored by the tension sensor 54 is in a stable state; when moisture enters the long box 41, as shown in FIG. Figure 10 As shown, the triggering deformation block 42 expands when encountering water, squeezing the pull rope 44, thereby further stretching the elastic rope 55, and the tension data of the tension sensor 54 increases significantly, thereby reflecting that there is moisture entering the interior of the spiral waterproof cloth 2.

[0025] See also Figure 4 One end surface of the waterproof cloth 2 is fixedly connected with a sponge layer 7, the sponge layer 7 is located on one side of the water-permeable cloth 6, and the sponge layer 7 and the water-permeable cloth 6 are both located on the same side of the cable body 1.

[0026] When installing the waterproof cloth 2, place the side of the waterproof cloth 2 with the sponge layer 7 inward, and make the end with the sponge layer 7 the starting end of the wrapping, so that the waterproof cloth 2 is Figure 7 In the state shown, the waterproof cloth 2 is wrapped around the outer end of the cable connector. After wrapping, the end of the waterproof cloth 2 is fastened to the outer end of the cable body 1 by the cloth pressing ring 3. The wrapping and fixing of the cloth pressing ring 3 will squeeze the sponge layer 7, so that the sponge layer 7 effectively seals the area between the cable body 1 and the cloth pressing ring 3, making it difficult for external moisture to enter the area where the cable connector is located through the two ends of the waterproof cloth 2. At the same time, the sponge layer 7 can also serve as the innermost water absorption protective structure, making it difficult for moisture to quickly reach the cable connector position; Waterproof detection principle: at least one pair of water-permeable cloths 6 is provided on the side of the hard self-test strip 4 away from the sponge layer 7, and at least one water-permeable cloth 6 is provided on the side of the hard self-test strip 4 close to the sponge layer 7. In this way, after the waterproof cloth 2 is wrapped, the water-permeable cloth 6 closest to the edge of the waterproof cloth 2 and the water-blocking yarn inside it will quickly absorb external moisture and expand, acting as a water-blocking layer to achieve a seal between the outermost layer and the sub-outer layer of the waterproof cloth 2, effectively blocking the entry of subsequent moisture. The water-permeable cloth 6 between the water-blocking layer and the hard self-test strip 4 serves as a transition layer. When there is too much external moisture and passes through the water-blocking layer and continues to enter the interior of the spiral waterproof cloth 2, the transition layer can absorb the incoming moisture, making it difficult for the moisture to spread quickly to the depths. The hard self-test strip 4 serves as a detection layer. When moisture gradually spreads to the position of the hard self-test strip 4, the moisture is absorbed by the absorbent cotton thread 43, and the pull rope 44 swells when it comes into contact with water, squeezing the pull rope 44, thereby triggering the tension sensor 54 to undergo a significant data change. At this time, when the background monitoring terminal receives the data change of the tension sensor 54, it can effectively determine that the humidity in the area near the cable joint is high, and manual processing can be carried out in time. In addition, the permeable cloth 6 between the hard self-test strip 4 and the sponge layer 7 can serve as a delay layer, which can continue to absorb the incoming moisture and swell, making it difficult for moisture to directly reach the cable joint, providing time for personnel to handle on the spot, and effectively improving the waterproof protection of the cable joint during the personnel response processing.

[0027] Second implementation method: This embodiment adopts a soft self-test strip 8 instead of a hard self-test strip 4, and the rest of the configuration is consistent with the first embodiment, as follows: Figure 11 and Figure 12 The soft self-test strip 8 includes a pair of single-port frames 81, an intermediate ring 83 is provided between the pair of single-port frames 81, and multiple links 82 are provided between the single-port frames 81 and the intermediate ring 83. A water-absorbing cloth cover 84 is fixedly connected between the single-port frame 81 and an adjacent link 82, between the intermediate ring 83 and an adjacent link 82, and between adjacent links 82. Through the cooperation of the above structure, the soft self-test strip 8 is superior to the hard self-test strip 4 in that: the soft self-test strip 8 has a flexible bending feature and can be used for the cable joint position with a bent setting, thereby effectively improving the scope of application of this application.

[0028] Combine Figure 13As shown, a pair of middle rings 83 are provided with a through hole 8301 corresponding to the through hole on the induction box 5 at one end close to the induction box 5, and the inner end wall of the single-port frame 81 is fixedly connected to one end of the connecting rope 86, and the other end of the connecting rope 86 is movable through the through hole 8301 and extends to the outside. The through hole 8301 is equivalent to the rope hole 402, which is used to communicate with the through hole on the induction box 5. The connecting rope 86 is used to be connected to the elastic rope 55. The inner side walls of the single-port frame 81 and the connecting ring 82 are fixedly connected with an expansion block 87. The expansion block 87 is made of the same material as the deformation block 42. Multiple expansion blocks 87 are also staggered up and down. The connecting rope 86 is interspersed between the multiple expansion blocks 87, and the interior of the absorbent cloth cover 84 is filled with cotton thread 88.

[0029] A pair of side ends of the intermediate ring 83 are fixedly connected to a mounting plate 85. One end face of the intermediate ring 83 and the mounting plate 85 passes through the cable body 1 and is flush with the cable body 1 in a horizontally stretched state. One end of the box body 51 close to the soft self-test strip 8 is connected to the mounting plate 85 by a screw. Through the above structure, the soft self-test strip 8 and the induction box 5 also adopt a detachable connection method, which facilitates the installation and disassembly of this application.

[0030] The detection principle of the soft self-test strip 8 is the same as that of the hard self-test strip 4 in the first embodiment: when moisture enters its interior through the absorbent cloth cover 84, the moisture is absorbed by the middle ring 83, and the expansion block 87 contacts the middle ring 83 and expands when it comes into contact with water, squeezing the connecting rope 86, thereby driving the elastic rope 55 to stretch, triggering the data change of the tension sensor 54.

[0031] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high-voltage cable for industrial parks, comprising a pair of cable bodies (1) and a cable connector connecting the pair of cable bodies (1), characterized in that: The outer side of the cable joint is wrapped with a spiral waterproof cloth (2), and the two ends of the waterproof cloth (2) extend to the outer sides of a pair of cable bodies (1), and the outer ends of the cable bodies (1) are sleeved with a pair of cloth pressing rings (3), the pair of cloth pressing rings (3) form a ring structure and are tightly sleeved on the outer ends of the waterproof cloth (2), the pair of cloth pressing rings (3) are connected by fasteners, one end face of the waterproof cloth (2) is fixedly connected to a plurality of deformation bodies, the deformation bodies include a permeable cloth (6) and a water-blocking yarn filled between the permeable cloth (6) and the waterproof cloth (2), the edge end of the permeable cloth (6) is fixedly connected to the surface of the waterproof cloth (2), and a hard self-test strip (4) is provided between the pair of permeable cloths (6), one end face of the hard self-test strip (4) passes through the cable body (1) and is flush with the cable body (1) in a horizontally stretched state, the hard self-test strip (4) is connected to the induction box (5) by bolts, and the induction box (5) and the permeable cloth (6) are located on different sides of the cable body (1); The hard self-test strip (4) includes a long box (41), the inner side wall of the long box (41) is fixedly connected to a plurality of uniformly distributed deformation blocks (42), a pair of inner end walls of the deformation blocks (42) are fixedly connected to one end of a pull rope (44), the other end of the pull rope (44) movably passes through the long box (41) and extends to the outside, the sensing box (5) includes a box (51), the interior of the box (51) is fixedly connected to a tension sensor (54), the sensing end of the tension sensor (54) is fixedly connected to a pair of elastic ropes (55), the pair of elastic ropes (55) movably pass through the box (51) and are respectively connected to the pair of pull ropes (44).

2. The high-voltage cable for industrial parks according to claim 1, characterized in that: The interior of the long box (41) is filled with absorbent cotton yarn (43), and the outer surface of the long box (41) is provided with evenly distributed mesh holes (401). The mesh holes (401) and the water-permeable cloth (6) are both located on the same side of the cable body (1).

3. The high-voltage cable for industrial parks according to claim 1, characterized in that: The plurality of deformation blocks (42) are staggered and distributed up and down, and the pull rope (44) is inserted between the plurality of staggered deformation blocks (42).

4. The high-voltage cable for industrial parks according to claim 1, characterized in that: A pair of side ends of the box body (51) are fixedly connected to side plates (52), one end of the long box body (41) close to the induction box (5) is provided with a pair of screw grooves (403), bolts are threadedly connected between the side plates (52) and the screw grooves (403), and one end of the box body (51) close to the hard self-test strip (4) is fixedly connected to a rubber pad (53).

5. The high-voltage cable for industrial parks according to claim 1, characterized in that: The end of the long box (41) close to the induction box (5) is also provided with a rope hole (402), and the pull rope (44) is movably passed through the rope hole (402) and extended to the outside. The end of the box (51) close to the hard self-test strip (4) is provided with a through hole corresponding to the rope hole (402).

6. The high-voltage cable for industrial parks according to claim 1, characterized in that: One end surface of the waterproof cloth (2) is fixedly connected to a sponge layer (7), the sponge layer (7) is located on one side of the water-permeable cloth (6), and the sponge layer (7) and the water-permeable cloth (6) are both located on the same side of the cable body (1).

7. The high-voltage cable for industrial parks according to claim 1, characterized in that: A soft self-test strip (8) is used to replace the hard self-test strip (4). The soft self-test strip (8) includes a pair of single-port frames (81). An intermediate ring (83) is provided between the pair of single-port frames (81). A plurality of chain links (82) are provided between the single-port frames (81) and the intermediate ring (83). Water-absorbing cloth sleeves (84) are fixedly connected between the single-port frame (81) and an adjacent chain link (82), between the intermediate ring (83) and an adjacent chain link (82), and between adjacent chain links (82).

8. The high-voltage cable for industrial parks according to claim 7, characterized in that: A pair of intermediate rings (83) are provided with a through hole (8301) corresponding to the through hole on the induction box (5) at one end close to the induction box (5), and one end of a connecting rope (86) is fixedly connected to the inner end wall of the single-port frame (81), and the other end of the connecting rope (86) is movable through the through hole (8301) and extends to the outside.

9. The high-voltage cable for industrial parks according to claim 8, characterized in that: The inner side walls of the single-port frame (81) and the link (82) are fixedly connected with expansion blocks (87), and the plurality of expansion blocks (87) are also staggered and distributed up and down. The connecting rope (86) is inserted between the plurality of expansion blocks (87), and the interior of the absorbent cloth cover (84) is filled with cotton thread (88).

10. The high-voltage cable for industrial parks according to claim 7, characterized in that: A pair of side ends of the intermediate ring (83) are fixedly connected to a mounting plate (85), one end surface of both the intermediate ring (83) and the mounting plate (85) passes through the cable body (1) and is flush with the cable body (1) in a horizontally stretched state, and one end of the box (51) close to the soft self-test strip (8) is connected to the mounting plate (85) by a screw.

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