Wear-resistant high-voltage power cable for smart power grid

Abstract

The invention relates to a wear-resistant high-voltage power cable for a smart power grid, which is applied to the technical field of cables, and comprises a cable body, a plurality of wear detection early warning mechanisms are arranged on the cable body, and each wear detection early warning mechanism comprises a simulated wear sleeve sleeving the cable body; the simulated grinding sleeve and the wear-resistant outer protective layer are made of the same material, the thickness of the simulated grinding sleeve is smaller than that of the wear-resistant outer protective layer, and the inner sides of the two ends of the simulated grinding sleeve are fixedly connected with supporting connecting rings matched with the simulated grinding sleeve; through the arrangement of the abrasion detection early warning mechanism, the abrasion detection early warning mechanism not only can improve the abrasion resistance of the cable to a certain extent, but also has detection and early warning functions, and can indirectly detect the abrasion condition of the cable body by detecting the abrasion condition of the simulated abrasion sleeve, so that early warning can be carried out in time when the cable body is seriously abraded; related technicians are prompted to carry out corresponding inspection and maintenance on the cable in time, the potential safety hazard of the cable is reduced, and the safety and intelligence of the cable are improved.

Description

Technical Field

[0001] This invention relates to a power cable, and more particularly to a wear-resistant high-voltage power cable for smart grids, applicable to the field of cable technology. Background Technology

[0002] A smart grid is a new type of power system that integrates modern information technology, communication technology, automation technology, and energy technology. It is characterized by high intelligence, automation, and interactivity, aiming to achieve safe, efficient, reliable, and economical operation of the power system and provide users with higher-quality power services. High-voltage power cables are important power equipment used for transmitting and distributing high-voltage electrical energy and play a crucial role in smart grids.

[0003] The invention patent with publication number CN118866451B discloses a high-voltage power cable. In this invention, the friction between the ground and the cable can be reduced by the use of ball bearings, which makes it easier to protect the cable and prevent the cable sheath from being damaged due to friction between the cable and the ground during dragging.

[0004] The invention patent with publication number CN116665982B discloses a wear-resistant and sun-resistant high-voltage power cable. This invention utilizes the close fit between the conductive sheet and the insulating shielding layer to conduct the heat on the conductor to the heat-conducting filling tube through the conductive sheet and the limiting sheet, which quickly reduces the temperature of the conductor, avoids the cable temperature from being too high and causing the cable insulation layer to age, improves the operating stability of the cable, and effectively prevents the occurrence of fire.

[0005] In practical applications, high-voltage power cables inevitably experience friction. Prolonged friction can easily damage the outermost sheath of the cable, significantly reducing its safety. However, existing high-voltage power cables generally lack corresponding detection and early warning functions, posing certain safety hazards. Therefore, we propose a wear-resistant high-voltage power cable for smart grids. Summary of the Invention

[0006] The technical problem that this invention aims to solve in view of the above-mentioned prior art is that long-term friction can easily cause damage to the outermost sheath of the cable, but high-voltage power cables in the prior art generally do not have corresponding detection and early warning functions.

[0007] To address the aforementioned problems, this invention provides a wear-resistant high-voltage power cable for smart grids, comprising a cable body, which includes a conductor, an insulation layer, a shielding layer, and a wear-resistant outer sheath arranged sequentially from the inside out. Multiple wear detection and early warning mechanisms are provided on the cable body. Each wear detection and early warning mechanism includes a wear-prone sleeve fitted onto the cable body. The wear-prone sleeve and the wear-resistant outer sheath are made of the same material, and the thickness of the wear-prone sleeve is less than the thickness of the wear-resistant outer sheath. Matching support rings are fixedly connected to the inner sides of both ends of the wear-prone sleeve. A heat-shrink tubing is fixedly connected to the end of the support ring away from the inner side of the wear-prone sleeve. Both the support rings and the heat-shrink tubing are fitted onto the cable body. A vent tube is embedded through one of the support rings. The end of the vent tube away from the inner side of the wear-prone sleeve is connected to a sealed wear detection cylinder. A temperature sensor, a pressure sensor, and a wear detection controller equipped with a wear detection intelligent early warning system are fixedly installed inside the sealed wear detection cylinder. An alarm light is fixedly installed on the outer wall of the sealed wear detection cylinder. The wear detection and warning system includes a wear detection setting module, a wear detection control module, and a wear detection analysis module. The wear detection setting module is connected to the wear detection control module. The wear detection control module is connected to the temperature sensor and the air pressure sensor. The temperature sensor and the air pressure sensor are both connected to the wear detection analysis module. The wear detection analysis module is connected to the warning light.

[0008] In the aforementioned wear-resistant high-voltage power cables for smart grids, the wear detection and early warning mechanism can indirectly detect the wear of the cable body by detecting the wear of the wear-prone sleeve. This allows for timely early warning when severe wear occurs in the cable body, prompting relevant technicians to conduct timely inspections and maintenance of the cable, thereby reducing potential safety hazards.

[0009] As a further improvement of this application, the grinding inspection and intelligent alarm system also includes a remote alarm module. The grinding inspection and analysis module is connected to the remote alarm module. When the grinding inspection and analysis module determines that the grinding sleeve has been damaged, the grinding inspection and analysis module will also control the remote alarm module to remotely alarm relevant personnel, thereby improving the effectiveness of the early warning function and ensuring that relevant personnel can receive the early warning in a timely manner.

[0010] As a further improvement of this application, the inner diameters of the support connecting ring and the heat shrink tubing are both larger than the diameter of the cable body, making it easier for the wear detection and early warning mechanism to slide along the cable body. This makes the wear detection and early warning mechanism easier to adjust and install. Half of the difference between the outer diameter of the wear-prone sleeve and the outer diameter of the heat shrink tubing is greater than the diameter of the sealing wear detection cylinder, preventing the sealing wear detection cylinder from affecting the friction experienced by the wear-prone sleeve, thereby improving the effectiveness of detection and early warning.

[0011] As a further improvement of this application, the sealing and grinding cylinder includes a sealing cylinder body, one end of which is connected to a threaded pipe that matches the air guide pipe, and the other end of the sealing cylinder body is set to an open shape and is fixedly connected to a matching sealing plate. A support plate is fixedly connected to the end of the sealing plate near the threaded pipe.

[0012] As a further improvement of this application, the connection between the sealing plate and the sealing cylinder is a detachable connection, the threaded connecting tube is sleeved on the outside of the air guide tube and the threaded connecting tube is threaded to the air guide tube, and the temperature sensor and the air pressure sensor are fixedly installed on the sealing plate or the support plate.

[0013] As another improvement of this application, an inflation pipe and an exhaust pipe are embedded through another support connecting ring. The inflation pipe and the exhaust pipe are located on both sides of the cable body, respectively. An inflation one-way valve is provided at one end of the inflation pipe, and a matching sealing cap is provided at one end of the exhaust pipe. A gas sensor is also fixedly installed inside the sealed grinding cylinder.

[0014] As a supplement to another improvement of this application, the gas sensor is connected to the wear analysis module, the wear control module is connected to the gas sensor, the inflation check valve is located inside the wear sleeve, the sealing cover is located outside the wear sleeve, and the sealing cover is threadedly connected to the exhaust pipe.

[0015] As a supplement to another improvement of this application, the wear-resistant high-voltage power cable for smart grids also includes a replacement relay inspection component. The replacement relay inspection component includes a connecting sealing strip and a replacement piece that matches the wear-prone sleeve. The connecting sealing strip is set in an arc shape that matches the wear-prone sleeve. Both ends of the connecting sealing strip are fixedly connected with clamping plates. The air guide tube and the air filling tube are located on the same side of the cable body. The outer walls of the air guide tube and the air filling tube are fixedly fitted with locking rings. The two clamping plates are respectively provided with sleeve holes that match the air guide tube and the air filling tube.

[0016] As a supplement to another improvement of this application, the material of the substitute piece is the same as that of the wear-simulating sleeve, the length of the connecting sealing strip matches the distance between the two supporting connecting rings, and when the connecting sealing strip is placed between the two supporting connecting rings, the two ends of the connecting sealing strip are slidably sealed to the two supporting connecting rings respectively, and the thickness of the snap-fit ​​plate matches the distance between the snap-fit ​​ring and the corresponding supporting connecting ring.

[0017] In summary, this application, through the inclusion of a wear detection and early warning mechanism, not only improves the cable's wear resistance to a certain extent but also provides detection and early warning functions. It can indirectly detect the wear of the cable body by detecting the wear of the wear-prone sleeve, thus providing timely warnings when severe wear occurs in the cable body. This prompts relevant technicians to promptly inspect and maintain the cable, reducing potential safety hazards and improving the cable's safety and intelligence. The combined use of an inflation pipe, an exhaust pipe, and a gas sensor allows the wear detection and early warning mechanism to detect whether the wear-prone sleeve is damaged through two different methods, which can be mutually verified, greatly improving the reliability of detection and early warning. Furthermore, the inclusion of a replacement relay detection component allows the damaged wear-prone sleeve to be replaced with a replacement piece when the wear-prone sleeve is damaged but the wear-resistant outer sheath can still be used. This enables the wear detection and early warning mechanism to continue detecting and warning of wear on the wear-resistant outer sheath, improving its practicality and reliability, and further enhancing cable safety. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a wear-resistant high-voltage power cable for smart grids according to the first embodiment of this application; Figure 2 This is a cross-sectional view of the proposed wear sleeve in the first embodiment of this application; Figure 3 This is a cross-sectional view of the sealing and grinding cylinder in the first embodiment of this application; Figure 4 This is a system structure block diagram of the intelligent alarm system for grinding detection in the first embodiment of this application; Figure 5 This is a three-dimensional structural diagram of a wear-resistant high-voltage power cable for smart grids according to the second embodiment of this application; Figure 6 This is a cross-sectional view of the proposed grinding sleeve in the second embodiment of this application; Figure 7 This is a cross-sectional view of the sealing and grinding cylinder in the second embodiment of this application; Figure 8 This is a system structure block diagram of the intelligent alarm system for grinding detection in the second embodiment of this application; Figure 9 This is a three-dimensional structural diagram of the replacement relay detection component in the second embodiment of this application; Figure 10 This is a pictographic illustration of the replacement of the wear sleeve with a substitute piece in the second embodiment of this application.

[0019] Explanation of the labels in the diagram: 001. Cable body; 201. Wear-detecting sleeve; 202. Support connecting ring; 203. Heat shrink tubing; 204. Air duct; 205. Warning light; 206. Temperature sensor; 207. Air pressure sensor; 208. Inflation tube; 209. Inflation check valve; 210. Exhaust pipe; 211. Sealing cap; 212. Gas sensor; 213. Locking ring; 003. Sealed wear-detecting cylinder; 301. Sealing cylinder body; 302. Sealing plate; 303. Threaded connecting tube; 304. Support plate; 004. Wear-detecting controller; 501. Imitation plate; 502. Connecting sealing strip; 503. Locking plate; 504. Sleeve hole. Detailed Implementation

[0020] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] First implementation method: Figures 1-4 This invention illustrates a wear-resistant high-voltage power cable for smart grids, comprising a cable body 001. The cable body 001 includes, from the inside out, a conductor, an insulation layer, a shielding layer, and a wear-resistant outer sheath. Multiple wear detection and early warning mechanisms are provided on the cable body 001. Each wear detection and early warning mechanism includes a wear-simulating sleeve 201 fitted onto the cable body 001. The wear-simulating sleeve 201 is made of the same material as the wear-resistant outer sheath, and its thickness is less than that of the wear-resistant outer sheath. Matching support connecting rings 202 are fixedly connected to the inner sides of both ends of the wear-simulating sleeve 201. A heat shrink tubing 203 is fixedly connected to one end away from the inner side of the wear-prone sleeve 201. Both the support connecting ring 202 and the heat shrink tubing 203 are sleeved on the cable body 001. A vent tube 204 is embedded through one of the support connecting rings 202. The end of the vent tube 204 away from the inner side of the wear-prone sleeve 201 is connected to a sealed wear detection cylinder 003. A temperature sensor 206, a pressure sensor 207, and a wear detection controller 004 equipped with a wear detection intelligent alarm system are fixedly installed inside the sealed wear detection cylinder 003. An alarm light 205 is fixedly installed on the outer wall of the sealed wear detection cylinder 003. The wear detection and warning system includes a wear detection setting module, a wear detection control module, and a wear detection analysis module. The wear detection setting module is connected to the wear detection control module by signal. The wear detection control module is connected to the temperature sensor 206 and the air pressure sensor 207 by signal. The temperature sensor 206 and the air pressure sensor 207 are both connected to the wear detection analysis module by signal. The wear detection analysis module is connected to the warning light 205 by signal.

[0022] On the one hand, the wear detection and early warning mechanism can act as a support, preventing the cable body near the mechanism from contacting the ground or other friction objects, thus avoiding wear on that part to a certain extent and improving the cable's wear resistance. On the other hand, when the cable body 001 is subjected to friction, the wear-prone sleeve 201 will also be subjected to friction. Therefore, the wear condition of the wear-resistant outer sheath can be indirectly detected by detecting the wear condition of the wear-prone sleeve 201. In addition, since the wear-prone sleeve 201 is made of the same material as the wear-resistant outer sheath but is thinner, it will usually break before the wear-resistant outer sheath. When laying cables, relevant technicians can first select the placement point of the wear detection and early warning mechanism as needed, then slide the wear detection and early warning mechanism to the placement point, and then heat the heat shrink tubing 203 to seal and fix it to the cable body 001. This fixes the wear detection and early warning mechanism at the placement point. A detection cycle is reasonably set through the wear detection setting module. The wear detection control module will periodically activate the temperature sensor 206 and the air pressure sensor 207 according to the detection cycle to detect whether the wear sleeve 201 is damaged (after the detection is completed, the wear detection control module will automatically shut down the temperature sensor 206 and the air pressure sensor 207). After the temperature sensor 206 and the air pressure sensor 207 are activated, they will respectively detect the temperature and air pressure data inside the sealed wear detection cylinder 003. The data detected by the temperature sensor 206 and the air pressure sensor 207 will be transmitted to the wear detection analysis module so that the wear detection analysis module can analyze the data detected by the temperature sensor 206 and the air pressure sensor 207. To determine whether the wear-testing sleeve 201 is damaged, the cable body 001 generates heat during operation, causing the temperature inside the cable body 001 to rise. This, in turn, causes the temperature inside the sealed wear-testing cylinder 003 to rise synchronously. Furthermore, the increased temperature leads to increased air pressure. Under normal circumstances, when the wear-testing sleeve 201 is intact, the air pressure inside the sealed wear-testing cylinder 003 will rise synchronously with the temperature. In this case, the temperature and air pressure data detected by the temperature sensor 206 and the air pressure sensor 207 should show a positive correlation. Conversely, if the wear-testing sleeve 201 is damaged, the air pressure inside the sealed wear-testing cylinder 003 will not rise synchronously with the temperature. Therefore, the wear-testing analysis module can determine whether the wear-testing sleeve 201 is damaged by analyzing the data detected by the temperature sensor 206 and the air pressure sensor 207. When the wear detection and analysis module determines that the wear-prone sleeve 201 is damaged, it indicates that the cable body 001 has also suffered relatively severe wear. At this time, the wear detection and analysis module will illuminate the warning light 205 to warn relevant technicians to promptly inspect and maintain the cable. Therefore, by setting up the wear detection and early warning mechanism, the mechanism can not only improve the wear resistance of the cable to a certain extent, but also has detection and early warning functions. It can indirectly detect the wear of the cable body 001 by detecting the wear of the wear-prone sleeve 201, thereby providing timely warnings when the cable body 001 experiences severe wear, prompting relevant technicians to promptly inspect and maintain the cable, reducing cable safety hazards, and improving the cable's safety and intelligence.

[0023] The grinding inspection and intelligent alarm system also includes a remote alarm module. The grinding inspection and analysis module is connected to the remote alarm module. When the grinding inspection and analysis module determines that the wear sleeve 201 is damaged, the grinding inspection and analysis module will also control the remote alarm module to remotely alarm relevant personnel (the alarm method can be SMS, email, etc., and remote alarm is existing technology, which will not be elaborated here). This can improve the effectiveness of the early warning function and ensure that relevant personnel can receive the early warning in a timely manner.

[0024] The inner diameters of the supporting connecting ring 202 and the heat shrink tubing 203 are both larger than the diameter of the cable body 001, making it easy for the wear detection and early warning mechanism to slide along the cable body 001. This makes the wear detection and early warning mechanism easy to adjust and install. Half of the difference between the outer diameter of the wear-prone sleeve 201 and the outer diameter of the heat shrink tubing 203 is greater than the diameter of the sealing wear detection cylinder 003, preventing the sealing wear detection cylinder 003 from affecting the friction experienced by the wear-prone sleeve 201, thereby improving the effectiveness of detection and early warning.

[0025] The sealing and grinding cylinder 003 includes a sealing cylinder 301. One end of the sealing cylinder 301 is connected to a threaded pipe 303 that matches the air guide pipe 204. The other end of the sealing cylinder 301 is set to an open shape and is fixedly connected to a matching sealing plate 302. A support plate 304 is fixedly connected to one end of the sealing plate 302 near the threaded pipe 303.

[0026] The connection between the sealing plate 302 and the sealing cylinder 301 is a detachable connection. The threaded connecting tube 303 is sleeved on the outside of the air guide tube 204 and is threadedly connected to the air guide tube 204. The temperature sensor 206 and the air pressure sensor 207 are fixedly installed on the sealing plate 302 or the support plate 304. On the one hand, this makes it easy to disassemble the sealing and grinding cylinder 003 (by rotating the sealing cylinder 301 to separate the threaded connecting tube 303 from the air guide tube 204, the sealing and grinding cylinder 003 can be removed), thereby facilitating the heating of the heat shrink tubing 203 to connect and fix it to the cable body 001, thus improving the convenience of installing the grinding warning mechanism. On the other hand, it makes it easy to maintain the temperature sensor 206, the air pressure sensor 207, the grinding controller 004, etc.

[0027] Second implementation method: Figures 5-10 This invention discloses a wear-resistant high-voltage power cable for smart grids. Unlike the first embodiment, another supporting connecting ring 202 is equipped with an inflation pipe 208 and an exhaust pipe 210. The inflation pipe 208 and the exhaust pipe 210 are located on both sides of the cable body 001, respectively. One end of the inflation pipe 208 is provided with an inflation one-way valve 209, and one end of the exhaust pipe 210 is provided with a matching sealing cap 211. A gas sensor 212 is also fixedly installed inside the sealed wear detection cylinder 003. The gas sensor 212 is signal-connected to the wear detection analysis module, and the wear detection control module is signal-connected to the gas sensor 212. The gas sensor 212 is also fixedly installed on the sealing plate 302 or the support plate 304. The inflation one-way valve 209 is located inside the wear detection sleeve 201, and the sealing cap 211 is located outside the wear detection sleeve 201. The sealing cap 211 is threadedly connected to the exhaust pipe 210.

[0028] After fixing the grinding detection and early warning mechanism at the designated location, first unscrew the sealing cap 211, and then inject a certain amount of rare gas (helium, argon, etc.; the gas sensor 212 is matched with the injected rare gas and can detect its concentration) into the inside of the grinding sleeve 201 through the gas filling pipe 208. After restarting, quickly screw the sealing cap 211 back on. The injection of rare gas will make the concentration of rare gas in the grinding sleeve 201 and the sealed grinding detection cylinder 003 much higher than the concentration of rare gas in the environment. During detection, the grinding control module will also activate the gas sensor 212. The gas sensor 212 is used to detect the concentration of rare gas in the sealed cylinder 301, and the detected data will be transmitted to the grinding analysis module. If the grinding sleeve 201 is damaged, the rare gas concentration will be detected. The relatively high concentration of gas allows the wear detection and analysis module to determine whether the wear-prone sleeve 201 is damaged by analyzing the concentration data detected by the gas sensor 212. Furthermore, the two detection methods can verify each other. When the analysis results of the two methods conflict, the wear detection and analysis module will also control the remote alarm module to issue a remote alarm, prompting relevant technicians to promptly inspect and maintain the wear detection and early warning mechanism. Therefore, through the combined arrangement of the inflation pipe 208, exhaust pipe 210, and gas sensor 212, the wear detection and early warning mechanism can detect whether the wear-prone sleeve 201 is damaged using two different methods, and the two detection methods can verify each other, greatly improving the reliability of detection and early warning.

[0029] The wear-resistant high-voltage power cable for smart grids also includes a replacement relay inspection assembly. This assembly includes a connecting sealing strip 502 and a replacement piece 501 that matches the wear-simulating sleeve 201. The connecting sealing strip 502 is arc-shaped to match the wear-simulating sleeve 201. Both ends of the connecting sealing strip 502 are fixedly connected to clamping plates 503. The air guide pipe 204 and the air filling pipe 208 are located on the same side of the cable body 001. A retaining ring 213 is fixedly fitted onto the outer wall of both the air guide pipe 204 and the air filling pipe 208. The two clamping plates 503 are respectively provided with sleeve holes 504 that match the air guide pipe 204 and the air filling pipe 208. The replacement piece 501 is made of the same material as the wear-simulating sleeve 201. The length of the connecting sealing strip 502 matches the distance between the two supporting connecting rings 202. When the connecting sealing strip 502 is placed between the two supporting connecting rings 202, both ends of the connecting sealing strip 502 are slidably sealed to the two supporting connecting rings 202 respectively. The thickness of the locking plate 503 matches the distance between the locking ring 213 and the corresponding supporting connecting ring 202 (for the locking ring 213 sleeved on the air guide tube 204, its corresponding supporting connecting ring 202 is the supporting connecting ring 202 embedded with the air guide tube 204; for the locking ring 213 sleeved on the inflation tube 208, its corresponding supporting connecting ring 202 is the supporting connecting ring 202 embedded with the inflation tube 208).

[0030] After detecting damage to the wear-resistant sleeve 201 and issuing an early warning, when relevant technicians inspect the cable body 001, if the inspection results indicate that the wear-resistant outer sheath can still be used, further testing and early warning are needed to ensure cable safety (or, based on other factors, further testing and early warning may be necessary). The technicians can first remove the damaged wear-resistant sleeve 201, then perform appropriate wear-reducing treatment on the substitute piece 501 based on the actual wear condition of the wear-resistant outer sheath. Next, the connecting sealing strip 502 is placed between the two supporting connecting rings 202. Two clamping plates 503 are respectively clamped onto the air duct 204 and the air filling pipe 208 through the sleeve hole 504 to install the connecting sealing strip 502 between the two supporting connecting rings 202. Then, the substitute piece 501 is fixed to the supporting connecting ring 202 along its outer wall and rolled into a cylindrical shape (depending on...). The appropriate connection method for the substitute piece 501 and the supporting connecting ring 202 is selected according to the situation. For example, it can be bonded with adhesive. When installing the substitute piece 501, both ends of the substitute piece 501 need to be connected at the connecting sealing strip 502 to ensure sealing. This allows the substitute piece 501 to replace the wear-prone sleeve 201, so that the wear detection and early warning mechanism can continue to detect and warn of the wear of the wear-resistant outer sheath. After the substitute piece 501 is installed, a certain amount of rare gas needs to be injected into the inside of the wear-prone sleeve 201 again through the air inlet pipe 208. Therefore, by setting up the replacement relay detection component, when the wear-prone sleeve 201 is damaged but the wear-resistant outer sheath can still be used, the damaged wear-prone sleeve 201 can be replaced by the substitute piece 501, so that the wear detection and early warning mechanism can continue to detect and warn of the wear of the wear-resistant outer sheath. This improves the practicality and reliability of the wear detection and early warning mechanism and further improves the safety of the cable.

[0031] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A wear-resistant high-voltage power cable for smart grids, comprising a cable body (001), wherein the cable body (001) comprises, from the inside out, a conductor, an insulation layer, a shielding layer, and a wear-resistant outer sheath, characterized in that, The cable body (001) is provided with multiple abrasion detection and early warning mechanisms. Each abrasion detection and early warning mechanism includes an abrasion-detecting sleeve (201) fitted onto the cable body (001). The abrasion-detecting sleeve (201) is made of the same material as the abrasion-resistant outer sheath, and its thickness is less than that of the abrasion-resistant outer sheath. Matching support rings (202) are fixedly connected to the inner sides of both ends of the abrasion-detecting sleeve (201). A heat-shrink tubing (203) is fixedly connected to one end of the support ring (202) away from the inner side of the abrasion-detecting sleeve (201). 2) Heat shrink tubing (203) is sleeved on the cable body (001). A vent tube (204) is embedded through one of the supporting connecting rings (202). The end of the vent tube (204) away from the inner side of the wear sleeve (201) is connected to a sealed wear detection cylinder (003). A temperature sensor (206), a pressure sensor (207), and a wear detection controller (004) equipped with a wear detection intelligent alarm system are fixedly installed inside the sealed wear detection cylinder (003). An alarm light (205) is fixedly installed on the outer wall of the sealed wear detection cylinder (003). The wear detection intelligent alarm system includes a wear detection setting module, a wear detection control module, and a wear detection analysis module. The wear detection setting module is signal-connected to the wear detection control module. The wear detection control module is signal-connected to a temperature sensor (206) and a pressure sensor (207). The temperature sensor (206) and the pressure sensor (207) are both signal-connected to the wear detection analysis module. The wear detection analysis module is signal-connected to an alarm light (205).

2. The wear-resistant high-voltage power cable for smart grids according to claim 1, characterized in that, The grinding inspection and intelligent alarm system also includes a remote alarm module, and the grinding inspection and analysis module is signal-connected to the remote alarm module.

3. The wear-resistant high-voltage power cable for smart grids according to claim 1, characterized in that, The inner diameters of the supporting connecting ring (202) and the heat shrink tube (203) are both larger than the diameter of the cable body (001), and half of the difference between the outer diameter of the wear-testing sleeve (201) and the outer diameter of the heat shrink tube (203) is larger than the diameter of the sealing wear-testing cylinder (003).

4. The wear-resistant high-voltage power cable for smart grids according to claim 1, characterized in that, The sealing and grinding cylinder (003) includes a sealing cylinder (301), one end of which is connected to a threaded pipe (303) that matches the air guide pipe (204), and the other end of the sealing cylinder (301) is set to an open shape and is fixedly connected to a matching sealing plate (302). A support plate (304) is fixedly connected to one end of the sealing plate (302) near the threaded pipe (303).

5. The wear-resistant high-voltage power cable for smart grids according to claim 4, characterized in that, The connection between the sealing plate (302) and the sealing cylinder (301) is a detachable connection. The threaded pipe (303) is sleeved on the outside of the air guide pipe (204) and the threaded pipe (303) is threadedly connected to the air guide pipe (204). The temperature sensor (206) and the air pressure sensor (207) are fixedly installed on the sealing plate (302) or the support plate (304).

6. The wear-resistant high-voltage power cable for smart grids according to claim 1, characterized in that, Another support connecting ring (202) is provided with an inflation tube (208) and an exhaust tube (210) through it. The inflation tube (208) and the exhaust tube (210) are located on both sides of the cable body (001). One end of the inflation tube (208) is provided with an inflation one-way valve (209), and one end of the exhaust tube (210) is provided with a matching sealing cap (211). A gas sensor (212) is also fixedly installed inside the sealing and grinding cylinder (003).

7. A wear-resistant high-voltage power cable for smart grids according to claim 6, characterized in that, The gas sensor (212) is connected to the grinding analysis module, the grinding control module is connected to the gas sensor (212), the inflation check valve (209) is located inside the grinding sleeve (201), the sealing cover (211) is located outside the grinding sleeve (201), and the sealing cover (211) is threadedly connected to the exhaust pipe (210).

8. A wear-resistant high-voltage power cable for smart grids according to claim 6, characterized in that, It also includes a replacement relay inspection component, which includes a connecting sealing strip (502) and a replacement piece (501) that matches the wear-matching sleeve (201). The connecting sealing strip (502) is set in an arc shape that matches the wear-matching sleeve (201). Both ends of the connecting sealing strip (502) are fixedly connected with a retaining plate (503). The air guide tube (204) and the air filling tube (208) are located on the same side of the cable body (001). The outer walls of the air guide tube (204) and the air filling tube (208) are fixedly fitted with retaining rings (213). The two retaining plates (503) are respectively provided with sleeve holes (504) that match the air guide tube (204) and the air filling tube (208).

9. A wear-resistant high-voltage power cable for smart grids according to claim 8, characterized in that, The material of the substitute piece (501) is the same as that of the wear sleeve (201). The length of the connecting sealing strip (502) matches the distance between the two supporting connecting rings (202). When the connecting sealing strip (502) is placed between the two supporting connecting rings (202), the two ends of the connecting sealing strip (502) are slidably and sealingly connected to the two supporting connecting rings (202) respectively. The thickness of the locking plate (503) matches the distance between the locking ring (213) and the corresponding supporting connecting ring (202).

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