Self-healing insulation power cable terminal accessory

Abstract

The utility model discloses a self-healing insulating power cable terminal accessory, which relates to the technical field of insulating power cables and comprises an accessory body, and a sealing mounting mechanism is arranged at one end of the accessory body. Through the arrangement of the sealing installation mechanism, the effect of sealing the connecting position can be achieved, in the using process, the upper clamping hoop and the lower clamping hoop are connected through the cooperation of the bolt and the nut, the sealing ring is installed and fixed to the connecting position through the upper clamping hoop and the lower clamping hoop, the connecting position is sealed through the sealing ring, and the sealing effect is good. The problems that water, moisture and dust enter, cable insulation is damaged, leakage current is increased, insulation resistance is reduced, partial discharge is caused, even cable breakdown short circuit is caused, water and moisture corrode cable conductors and metal parts of terminal accessories, contact resistance is increased, the connecting position is heated, and the service life of the cable is prolonged due to the fact that the connecting position cannot be sealed can be solved. Therefore, the service life of the cable terminal accessory is ensured.

Description

Technical Field

[0001] This utility model relates to the field of insulated power cable technology, specifically a self-healing insulated power cable terminal accessory. Background Technology

[0002] Power cable termination accessories are devices installed at the end of power cables to connect the cables to other electrical equipment (such as transformers, switches, etc.) and to ensure the insulation and electrical performance of the cable ends.

[0003] Most cable termination accessories currently in use cannot seal the connection points. During use, this lack of sealing allows water, moisture, and dust to enter, damaging cable insulation, increasing leakage current, reducing insulation resistance, causing partial discharge, and even cable breakdown and short circuits. Furthermore, water and moisture corrode cable conductors and metal components of the termination accessories, increasing contact resistance and causing overheating at the connection point, further damaging the cable and accessories. This results in a shorter lifespan for the cable termination accessories and prevents them from self-healing when damaged. The inability to self-heal at the damage site alters the electric field distribution, leading to electric field concentration, accelerating insulation aging and damage, increasing the risk of insulation breakdown, causing short circuits, and potentially even electrical fires and explosions, threatening personnel safety and equipment operation. Therefore, the safety of these cable termination accessories is poor. Utility Model Content

[0004] The purpose of this invention is to provide a self-healing insulated power cable terminal accessory to solve the problems raised in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-healing insulated power cable terminal accessory, comprising an accessory body, a sealing installation mechanism provided at one end of the accessory body, the sealing installation mechanism comprising a sealing ring, a connecting plate fixedly connected to one side of the sealing ring, a lower clamp movably connected to the outer wall of the connecting plate, a rotating shaft rotatably connected to the inner wall of the lower clamp, a rotating plate fixedly connected to one end of the rotating shaft, a connecting rod fixedly connected to the inner side of the rotating plate, an upper clamp fixedly connected to one end of the connecting rod, mounting plates fixedly connected to the bottom of the upper clamp and the top of the lower clamp, a bolt movably connected inside the mounting plate, and a nut threadedly connected to the outer wall of the bolt.

[0006] As a preferred technical solution, the connecting plate is L-shaped, and there are two sets of connecting plates, with four in each set.

[0007] As a preferred technical solution, the shape and curvature of the lower clamp match the shape and curvature of the connecting plate, and there are two sets of lower clamps, one in each set.

[0008] As a preferred technical solution, the lower clamp has a through hole inside, the shape and size of which match the shape and size of the rotating shaft, and the lower clamp is rotatably connected to the rotating shaft through the through hole.

[0009] As a preferred technical solution, the mounting plate is rectangular in shape, and there are two sets of mounting plates, with two plates in each set.

[0010] As a preferred technical solution, the mounting plate has a through hole inside, the shape and size of which match the shape and size of the bolt, and the mounting plate is movably connected to the bolt through the through hole.

[0011] As a preferred technical solution, the inner wall of the accessory body is provided with threads, and the number of threads is two.

[0012] As a preferred technical solution, a self-healing coating is fixedly connected to the outer wall of the accessory body, and the shape and size of the self-healing coating match the shape and size of the accessory body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves a sealing effect at the connection point through the setting of the sealing installation mechanism. During use, the upper and lower clamps are connected by the cooperation of bolts and nuts, so that the upper and lower clamps install and fix the sealing ring at the connection point. The sealing ring seals the connection point, which can prevent water, moisture and dust from entering due to the inability to seal the connection point, thus avoiding damage to the cable insulation, increased leakage current, reduced insulation resistance, partial discharge, or even cable breakdown and short circuit. In addition, water and moisture can corrode the cable conductor and metal parts of the terminal accessories, increase contact resistance, cause the connection point to heat up, and further damage the cable and accessories. This ensures the service life of the cable terminal accessories.

[0015] 2. This utility model, through the setting of a self-healing coating, can achieve the function of self-healing when the accessory body is damaged. During use, the self-healing coating blocks the damage to the accessory body and heals itself. This can avoid the situation where the cable terminal assembly cannot self-heal, which would lead to changes in the electric field distribution at the damaged area, resulting in electric field concentration, accelerated insulation aging and damage, increased risk of insulation breakdown, short circuit faults, and even electrical fires, explosions and other accidents, threatening personnel safety and normal equipment operation. This ensures the safety of the cable terminal accessory during use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the accessory body of this utility model;

[0018] Figure 3 This is a schematic diagram of the sealing installation mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the rotating plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the accessory body and the self-healing coating of this utility model.

[0021] The components include: 1. Accessory body; 2. Sealing installation mechanism; 201. Sealing ring; 202. Connecting plate; 203. Lower clamp; 204. Rotating shaft; 205. Rotating plate; 206. Connecting rod; 207. Upper clamp; 208. Mounting plate; 209. Bolt; 210. Nut; 3. Self-healing coating; 4. Thread. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1 and Figure 2 As shown, the present invention provides the following technical solution, including an accessory body 1, a sealing installation mechanism 2 at one end of the accessory body 1, two threads 4 on the inner wall of the accessory body 1, and a self-healing coating 3 fixedly connected to the outer wall of the accessory body 1, the shape and size of the self-healing coating 3 matching the shape and size of the accessory body 1.

[0024] Specifically: When the accessory body 1 is needed, the connection points at both ends of the accessory body 1 must first be treated to ensure that the connection points are sealed after the cable is connected to the electrical equipment. The connection points are sealed by the sealing installation mechanism 2. Then, the cable is installed to one end of the accessory body 1 through the thread 4 on the inner wall of the accessory body 1, and the electrical equipment is installed to the other end of the accessory body 1. When using the accessory body 1, if the accessory body 1 is damaged, the damage is blocked by the self-healing coating 3. At the same time, the self-healing coating 3 will automatically repair the cracks, thus completing the work.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sealing installation mechanism 2 is provided at one end of the accessory body 1. The sealing installation mechanism 2 includes a sealing ring 201. A connecting plate 202 is fixedly connected to one side of the sealing ring 201. A lower clamp 203 is movably connected to the outer wall of the connecting plate 202. A rotating shaft 204 is rotatably connected to the inner wall of the lower clamp 203. A rotating plate 205 is fixedly connected to one end of the rotating shaft 204. A connecting rod 206 is fixedly connected to the inner side of the rotating plate 205. An upper clamp 207 is fixedly connected to one end of the connecting rod 206. Mounting plates 208 are fixedly connected to the bottom of the upper clamp 207 and the top of the lower clamp 203. A bolt 209 is movably connected inside the mounting plate 208. A nut 210 is threadedly connected to the outer wall of the bolt 209. The connecting plate 202 is L-shaped, and there are two sets of four connecting plates 202. The shape and curvature of the lower clamp 203 match the shape and curvature of the connecting plate 202, and there are two sets of one lower clamp 203. The lower clamp 203 has a through hole inside, and the shape and size of the through hole match the shape and size of the rotating shaft 204. The lower clamp 203 is rotatably connected to the rotating shaft 204 through the through hole. The mounting plate 208 is rectangular, and there are two sets of two mounting plates 208. The mounting plate 208 has a through hole inside, and the shape and size of the through hole match the shape and size of the bolt 209. The mounting plate 208 is movably connected to the bolt 209 through the through hole.

[0026] Specifically: When the accessory body 1 is needed, the connection points at both ends of the accessory body 1 must first be treated to ensure that the connection points are sealed after the cable is connected to the electrical equipment. Then, the connecting plates 202 on both sealing rings 201 are inserted into the outer wall of the accessory body 1, ensuring that the two sealing rings 201 are tightly against both ends of the accessory body 1. Next, the inner wall of the lower clamp 203 is tightly against the connecting plate 202. Then, the upper clamp 207 is turned, and the rotation of the shaft 204 within the lower clamp 203 causes the shaft 204 to drive the rotating plate 205 to rotate. The rotating plate 205 then drives the connecting rod 206 to rotate. The upper clamp 207 is rotated so that it can be pried open, making the mounting plate 208 on the upper clamp 207 fit tightly against the mounting plate 208 on the lower clamp 203. Then, the bolt 209 is inserted into the through hole in the mounting plate 208, and the nut 210 is rotated and inserted into the bolt 209, so that the bolt 209 and the nut 210 fix the two mounting plates 208 in place. Thus, the upper clamp 207 and the lower clamp 203 fix the connecting plate 202 to the outer wall of the accessory body 1. The two sealing rings 201 are fixed at both ends of the accessory body 1, so that the sealing rings 201 seal the connection, thereby completing the sealing installation work.

[0027] like Figure 1 , Figure 2 and Figure 5As shown, a self-healing coating 3 is fixedly connected to the outer wall of the accessory body 1, and the shape and size of the self-healing coating 3 match the shape and size of the accessory body 1.

[0028] Specifically: When using the accessory body 1, if the accessory body 1 is damaged, the self-healing coating 3 will block it, and the self-healing coating 3 is made of a coating containing self-healing microcapsules. After the surface is damaged, the self-healing coating will automatically repair the crack, thereby completing the self-healing work.

[0029] The working principle of this utility model is as follows: When the accessory body 1 is needed, the connection points at both ends of the accessory body 1 must first be processed so that the connection points are sealed after the cable is connected to the electrical equipment. At this time, the connecting plates 202 on the two sealing rings 201 are inserted into the outer wall of the accessory body 1, so that the two sealing rings 201 are tightly attached to both ends of the accessory body 1. Then, the inner wall of the lower clamp 203 is tightly attached to the connecting plate 202. Then, the upper clamp 207 is bent. Through the rotation of the rotating shaft 204 in the lower clamp 203, the rotating shaft 204 drives the rotating plate 205 to start rotating. The rotating plate 205 drives the connecting rod 206 to start rotating. The connecting rod 206 drives the upper clamp 207 to start rotating, so that the upper clamp 207 can be bent, so that the mounting plate 208 on the upper clamp 207 is tightly attached to the mounting plate 208 on the lower clamp 203. Then, the bolts are... Bolt 209 is inserted into the through hole in mounting plate 208, and then nut 210 is rotated and inserted into bolt 209, so that bolt 209 and nut 210 fix the two mounting plates 208, thereby fixing the connecting plate 202 to the outer wall of accessory body 1 by upper clamp 207 and lower clamp 203. Two sealing rings 201 are fixed at both ends of accessory body 1, so that sealing rings 201 seal the connection, thereby completing the sealing installation work. Then, the cable is installed to one end of accessory body 1 through the thread 4 on the inner wall of accessory body 1, and the electrical equipment is installed to the other end of accessory body 1. When using accessory body 1, if accessory body 1 is damaged, self-healing coating 3 will block it. Self-healing coating 3 is made of coating containing self-healing microcapsules. After the surface is damaged, the self-healing coating automatically repairs the crack, thereby completing the self-healing work.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-healing insulated power cable terminal accessory, comprising an accessory body (1), characterized in that: One end of the accessory body (1) is provided with a sealing installation mechanism (2). The sealing installation mechanism (2) includes a sealing ring (201). A connecting plate (202) is fixedly connected to one side of the sealing ring (201). A lower clamp (203) is movably connected to the outer wall of the connecting plate (202). A rotating shaft (204) is rotatably connected to the inner wall of the lower clamp (203). A rotating plate (205) is fixedly connected to one end of the rotating shaft (204). A connecting rod (206) is fixedly connected to the inner side of the rotating plate (205). An upper clamp (207) is fixedly connected to one end of the connecting rod (206). An installation plate (208) is fixedly connected to both the bottom of the upper clamp (207) and the top of the lower clamp (203). A bolt (209) is movably connected inside the installation plate (208). A nut (210) is threadedly connected to the outer wall of the bolt (209).

2. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The connecting plate (202) is L-shaped, and there are two sets of connecting plates (202), with four in each set.

3. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The shape and curvature of the lower clamp (203) match the shape and curvature of the connecting plate (202), and there are two sets of lower clamps (203), one in each set.

4. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The lower clamp (203) has a through hole inside, the shape and size of which match the shape and size of the rotating shaft (204), and the lower clamp (203) is rotatably connected to the rotating shaft (204) through the through hole.

5. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The mounting plate (208) is rectangular in shape, and there are two sets of mounting plates (208), with two in each set.

6. The self-healing insulated power cable terminal accessory according to claim 5, characterized in that: The mounting plate (208) has a through hole inside, the shape and size of which match the shape and size of the bolt (209), and the mounting plate (208) is movably connected to the bolt (209) through the through hole.

7. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The inner wall of the accessory body (1) is provided with threads (4), and the number of threads (4) is two.

8. The self-healing insulated power cable terminal accessory according to claim 1, characterized in that: The outer wall of the accessory body (1) is fixedly connected with a self-healing coating (3), and the shape and size of the self-healing coating (3) match the shape and size of the accessory body (1).

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