A high voltage cable with good flexibility

Abstract

The application discloses a high-voltage cable with good flexibility, and relates to the technical field of high-voltage cables, comprising a protection mechanism and a conductor mechanism. The high-voltage cable with good flexibility can continuously monitor the temperature outside the high-voltage cable through a temperature sensor during use, can timely find the case that the temperature is too high due to internal short circuit or other conditions, can continuously monitor the current transmission state of the core through the current sensor in cooperation with the guide sheet, and can continuously monitor the voltage state of the core through the voltage sensor in cooperation with the guide sheet. Each electric signal is received and processed through the processing module. When the temperature, current and voltage are abnormal, the communication module can timely send a holding signal to the remote end, so that the maintenance personnel can find the abnormal state of the high-voltage cable in the first time, thereby timely maintaining the high-voltage cable, improving the maintenance efficiency and avoiding the occurrence of safety accidents.

Description

Technical Field

[0001] This invention relates to the field of high-voltage cable technology, specifically to a high-voltage cable with good flexibility. Background Technology

[0002] High-voltage cables are cables used to transmit high-voltage electricity. The voltage level of high-voltage cables is usually above 1000V, and can reach thousands or even tens of thousands of volts. The advantages of high-voltage cables include large transmission capacity, low loss, high safety, good wear resistance and corrosion resistance. They are widely used in power transmission, distribution and industrial applications, such as power transmission networks, substations, factories, mines, etc. When selecting high-voltage cables, it is necessary to select the appropriate cable type and specifications according to the specific application scenario and requirements.

[0003] In the prior art, such as Chinese Patent No. CN206991800U, a flexible high-voltage cable is disclosed, including an insulating sleeve. A first positioning seat is fixedly connected to the inner side of the insulating sleeve. A first positioning block is fixedly connected to one side of the first positioning seat. One side of the first positioning block is elastically connected to one side of a first limiting spring. The other side of the first limiting spring is elastically connected to one side of the outer surface of a hinge ball. The other side of the outer surface of the hinge ball is elastically connected to one side of a second limiting spring. The other side of the second limiting spring is fixedly connected to one side of a second positioning block. One side of the second positioning block is fixedly connected to the outer surface of a buffer layer through a second positioning seat. This flexible high-voltage cable, through the coordinated use of the first positioning seat, first positioning block, first limiting spring, hinge ball, second limiting spring, second positioning block, and second positioning seat, can reduce the stress on the insulating sleeve when it is subjected to excessive external force.

[0004] Although the high-voltage cables in the aforementioned patents have good flexibility and reduce the stress on the insulation sleeve when subjected to excessive external force, high-voltage cables are exposed to the outside environment during use. During the transmission of power and signals, there is no function to remotely monitor the cable status. When damage to the cable is not detected in time, short circuits or even leakage may easily occur, posing a significant safety hazard.

[0005] Therefore, we propose a high-voltage cable with good flexibility to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a high-voltage cable with good flexibility to solve the problems mentioned in the background art, where high-voltage cables are exposed to the outside environment and lack remote monitoring of cable status during power and signal transmission. When cable damage occurs and is not detected in time, short circuits or even leakage may easily occur, posing significant safety hazards.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage cable with good flexibility, comprising a protective mechanism and a conductor mechanism, wherein a detection mechanism is provided on the outside of the protective mechanism, the detection mechanism comprising a housing, a current sensor is installed on the inner bottom of the housing near the front side, a temperature sensor is installed on the inner bottom of the housing to the left of the current sensor, a voltage sensor is installed on the inner bottom of the housing behind the temperature sensor, a communication module is installed on the inner bottom of the housing behind the voltage sensor, a processing module is installed on the inner bottom of the housing to the right of the communication module, and a battery is installed on the inner bottom of the housing to the right of the processing module.

[0008] Preferably, the protective mechanism includes an outer sheath, and multiple embedded grooves are equally spaced inside the outer sheath near the outer surface, and shape memory metal strips are fused into the inside of the embedded grooves.

[0009] Preferably, a slot is provided on the front surface of the outer sheath near the top, a plug is fixedly connected to the bottom of the outer shell, the plug and the slot are connected by a plug, and multiple memory metal rings are equidistantly embedded on the inner side of the outer sheath near the inner wall.

[0010] Preferably, the number of conductor mechanisms is set to three, and each of the three conductor mechanisms includes a conductor core. The three conductor cores are respectively a live wire, a neutral wire, and a ground wire, and a heat insulation layer is provided on the outside of the conductor core.

[0011] Preferably, a second shielding layer is provided outside the heat insulation layer, a second insulating layer is provided outside the second shielding layer, and an inner sheath is provided outside the second insulating layer.

[0012] Preferably, a warning light is installed at the bottom inner part of the housing, located to the right of the battery, and a sealing ring is bonded to the top edge of the housing, with a sealing cap fixedly installed on top of the sealing ring.

[0013] Preferably, a filling layer is provided between the outer surfaces of the three inner sheaths, a first shielding layer is provided outside the filling layer, and a first insulating layer is provided outside the first shielding layer.

[0014] Preferably, the first insulating layer is provided with a wrapping tape on the outside, and the wrapping tape is provided with copper strip armor on the outside.

[0015] Preferably, a guide plate is fixedly connected to the bottom of the housing near the front surface, and the outer surfaces of the three guide cores all pass through the outer surfaces of the guide plate and extend to the front side.

[0016] Preferably, three retaining rings are fixedly connected to the front surface of the guide plate, the positions of the retaining rings correspond to the positions of the guide core, and the inner surface of the retaining rings and the inner surface of the guide core are tightly fitted together.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. During the use of high-voltage cables, temperature sensors continuously monitor the external temperature of the cables, enabling timely detection of internal short circuits or other conditions that cause excessive temperature. Current sensors, in conjunction with conductor plates, continuously monitor the current transmission status of the conductor core. Voltage sensors, through conductor plates, continuously monitor the voltage status of the conductor core. Furthermore, a processing module receives and processes each electrical signal. When abnormalities occur in temperature, current, or voltage, an alarm signal can be promptly sent to a remote location in conjunction with a communication module. This allows maintenance personnel to detect abnormal conditions in the high-voltage cables immediately, facilitating timely repairs, improving maintenance efficiency, and preventing safety accidents.

[0019] 2. To maintain the cable's good flexibility, the traditional high-hardness outer sheath is replaced with a more flexible, low-smoke, halogen-free material. This protects the internal structure from external environmental influences and does not produce toxic gases during combustion. This reduces environmental damage and simplifies repairs should a leakage cause the cable to burn. Furthermore, by embedding multiple strip-shaped shape memory metal pieces in the same direction as the outer sheath, the impact on the overall flexibility of the high-voltage cable is reduced, and the tensile strength at both ends of the outer sheath is significantly improved. The numerous shape memory metal rings inside have a relatively low impact on the bending flexibility of the outer sheath but effectively improve the compressive strength of the outer side of the sheath. This ensures the performance of the high-voltage cable's outer sheath while effectively improving its overall flexibility, facilitating subsequent installation and use.

[0020] 3. The three conductors inside the high-voltage cable are each independently equipped with a heat insulation layer, a second shielding layer, a second insulation layer, and an inner sheath. This gives each conductor a good heat insulation effect, signal shielding effect, insulation effect, and excellent mechanical properties. As a result, it can still work even if the external structure is damaged, and has high reliability. Attached Figure Description

[0021] Figure 1 This is a perspective view of a high-voltage cable with good flexibility according to the present invention.

[0022] Figure 2 This is a side view of a high-voltage cable with good flexibility according to the present invention.

[0023] Figure 3 This is a cross-sectional view of a high-voltage cable with good flexibility according to the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a high-voltage cable outer sheath with good flexibility according to the present invention;

[0025] Figure 5 It is a schematic structural diagram of a high-voltage cable detection mechanism with good flexibility according to the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of a high-voltage cable detection mechanism with good flexibility according to the present invention;

[0027] Figure 7 It is a front view of a high-voltage cable with good flexibility according to the present invention;

[0028] Figure 8 It is a front view of a conductor mechanism of a high-voltage cable with good flexibility according to the present invention.

[0029] In the figures:

[0030] 1. Protection mechanism; 101. Outer sheath; 102. Embedded groove; 103. Shape memory metal strip; 104. Shape memory metal ring sheet; 105. Slot; 2. Detection mechanism; 201. Conductive sheet; 202. Retaining ring; 203. Outer housing; 204. Insertion block; 205. Sealing ring; 206. Sealing cover; 207. Current sensor; 208. Temperature sensor; 209. Voltage sensor; 210. Communication module; 211. Processing module; 212. Battery; 213. Warning light; 3. Copper tape armor; 31. Wrapping tape; 32. First insulating layer; 33. First shielding layer; 34. Filling layer; 4. Conductor mechanism; 401. Conductive core; 402. Heat insulating layer; 403. Second shielding layer; 404. Second insulating layer; 405. Inner sheath. Detailed Description of the Embodiments

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present invention.

[0032] Please refer to Figures 1-8The present invention provides a technical solution: a high-voltage cable with good flexibility, including a protective mechanism 1 and a conductor mechanism 4. A detection mechanism 2 is set on the outside of the protective mechanism 1. The detection mechanism 2 includes a housing 203. A current sensor 207 is installed on the inner bottom of the housing 203 near the front side. A temperature sensor 208 is installed on the inner bottom of the housing 203 to the left of the current sensor 207. A voltage sensor 209 is installed on the inner bottom of the housing 203 behind the temperature sensor 208. A communication module 210 is installed on the inner bottom of the housing 203 behind the voltage sensor 209. A processing module 211 is installed on the inner bottom of the housing 203 to the right of the communication module 210. A battery 212 is installed on the inner bottom of the housing 203 to the right of the processing module 211.

[0033] like Figures 1-4 As shown, the protective mechanism 1 includes an outer sheath 101. Multiple recessed grooves 102 are equidistantly formed inside the outer sheath 101 near its outer surface. Shape memory metal strips 103 are fused into the recessed grooves 102. The outer sheath 101 is made of low-smoke, halogen-free material, which protects the internal structure from external environmental influences and does not produce toxic gases during combustion. Its thickness is 8-15mm. The recessed grooves 102 are mainly used to accommodate the shape memory metal strips 103. When the high-voltage cable bends, the sheet-like shape memory metal strips 103 bend accordingly without affecting the overall flexibility. Furthermore, due to their shape memory characteristics, the high-voltage cable is easier to recover, and the tensile strength of the outer sheath 101 is effectively improved, thus enhancing the overall strength.

[0034] like Figures 1-4 As shown, a slot 105 is provided on the front surface of the outer sheath 101 near the top. A plug 204 is fixedly connected to the bottom of the outer shell 203. The plug 204 and the slot 105 are connected by a plug-in connection. Multiple memory metal rings 104 are equidistantly embedded on the side of the inner wall of the outer sheath 101. The slot 105 is provided on the front side of the mounting connector of the outer sheath 101, which is mainly used to accommodate the plug 204. When the plug 204 is inserted into the slot 105, it serves to install the outer shell 203 onto the surface of the outer sheath 101. The memory metal rings 104 embedded inside the outer sheath 101 have a circular cross-section, a front and back thickness of 2-5mm, a top and bottom thickness of 2-3mm, and a distance of 10-20mm between them. This does not affect the bending of the outer sheath 101 and maintains the flexibility of the outer sheath 101. Since they are concentric rings with the outer sheath 101, they can effectively improve the compressive strength of the outer sheath 101 surface in different directions, thus further improving the strength of the outer sheath 101.

[0035] like Figures 1-3 , Figure 7 and Figure 8As shown, the number of conductor mechanisms 4 is set to three, and each of the three conductor mechanisms 4 includes a conductor core 401. The three conductor cores 401 are respectively the live wire, neutral wire, and ground wire. A heat insulation layer 402 is set on the outside of the conductor core 401. Each conductor core 401 is supported by stranded copper conductors and has a spiral appearance, which can effectively improve the flexibility of the cable, making it easier to bend and install. At the same time, it reduces the stress concentration inside the conductor core 401, improves the reliability and durability of the high-voltage cable. After being connected with the appropriate connector, the three conductor cores 401 respectively connect the live wire, neutral wire, and ground wire at both ends. The heat insulation layer 402 is made of fluororubber, which has good high temperature resistance and can withstand the high temperature generated during the operation of the high-voltage cable and isolate it, reducing the damage of high temperature to the external structure and improving the overall service life.

[0036] like Figures 1-3 , Figure 7 and Figure 8 As shown, a second shielding layer 403 is provided outside the heat insulation layer 402, a second insulating layer 404 is provided outside the second shielding layer 403, and an inner sheath 405 is provided outside the second insulating layer 404. The second shielding layer 403 is made of tin-plated copper wire, which can effectively reduce the influence of external electromagnetic interference on the three conductor cores 401 and ensure the reliability of the conductor cores 401 during operation. The second insulating layer 404 is made of cross-linked polyethylene material, which mainly isolates the three conductor cores 401 from the external environment, prevents current leakage and short circuit, and improves safety. The inner sheath 405 and the outer sheath 101 are made of the same material, which mainly protects the internal structure and makes the three conductor cores 401 form an independent unit. In the event of damage to the external structure, the conductor cores 401 still have a certain protective effect.

[0037] like Figure 5 and Figure 6 As shown, a warning light 213 is installed on the inner bottom of the outer casing 203, located to the right of the battery 212. A sealing ring 205 is bonded to the top edge of the outer casing 203, and a sealing cover 206 is fixedly installed on the top of the sealing ring 205. The warning light 213 mainly illuminates when the conductor 401 is in an abnormal state, thereby alerting maintenance personnel and enabling quick troubleshooting, improving maintenance efficiency and accuracy. The sealing cover 206 is made of polycarbonate material, which has excellent mechanical properties and is a transparent material. It is mainly used to seal the outer casing 203 to protect its internal structure, while also allowing the status of the warning light 213 to be viewed. The sealing ring 205 is mainly used to improve the sealing between the sealing cover 206 and the outer casing 203, preventing rainwater or dust and other impurities from entering the interior of the outer casing 203 and causing damage to internal components.

[0038] like Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, a filling layer 34 is provided between the outer surfaces of the three inner sheaths 405. A first shielding layer 33 is provided outside the filling layer 34, and a first insulating layer 32 is provided outside the first shielding layer 33. The filling layer 34 is made of polyethylene material, which has good insulation performance, corrosion resistance and wear resistance. It can protect the internal structure and fill the gap between the three conductor mechanisms 4, providing additional mechanical protection and insulation performance. The first shielding layer 33 and the second shielding layer 403 are made of the same material, which can shield the three internal conductor cores 401 for signals and improve their anti-electromagnetic interference ability. The first insulating layer 32 and the second insulating layer 404 are made of the same material, which plays a role in further improving the insulation effect.

[0039] like Figure 1 , Figure 3 and Figure 7 As shown, a wrapping tape 31 is provided on the outside of the first insulation layer 32, and a copper tape armor 3 is provided on the outside of the wrapping tape 31. The wrapping tape 31 mainly provides additional insulation protection for the internal structure. It wraps around the outside to form an insulation barrier, which can prevent the influence of the external electric field on the internal conductor 401 and provide a certain mechanical protection to prevent the high-voltage cable from being damaged during installation and use. The wrapping tape 31 has little impact on the flexibility of the high-voltage cable itself. The copper tape armor 3 is made of bare copper tape, which has good conductivity and corrosion resistance, and can effectively protect the cable from electromagnetic interference and the influence of the external environment, thus improving its service life.

[0040] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the bottom of the housing 203 is fixedly connected to the guide plate 201 near the front surface. The outer surfaces of the three guide cores 401 all pass through the outer surface of the guide plate 201 and extend to the front side. The guide plate 201 is located between the high-voltage cable and the disconnection or joint connection, and is used to electrically connect the detection mechanism 2 and the guide core 401.

[0041] like Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, three retaining rings 202 are fixedly connected to the front surface of the guide plate 201. The positions of the retaining rings 202 correspond to the positions of the guide core 401, and the inner surface of the retaining rings 202 and the inner surface of the guide core 401 are tightly fitted. When the guide core 401 is connected, it passes through the guide plate 201. The guide plate 201 is made of insulating material and has a conductive copper sheet inside. The two are electrically connected through the internal copper sheet. When the retaining rings 202 on the guide plate 201 are flattened, they can hold the guide core 401 in place, thereby improving the firmness of the connection and preventing damage caused by sliding friction between the guide core 401 and the guide plate 201.

[0042] The usage and working principle of this device are as follows: When the high-voltage cable is put into use, the internal conductor core 401 is passed through the conductor plate 201, and the retaining ring 202 is pressed flat to ensure a tight connection between the conductor core 401 and the conductor plate 201. Then, the connector is installed at the front end of the high-voltage cable for use. During use, the temperature sensor 208 inside the outer casing 203 continuously monitors the temperature of the outer sheath 101 surface to prevent undetected overheating due to short circuits or other conditions, thus avoiding potential safety hazards. Simultaneously, the current sensor 207 continuously monitors the current transmission status of the conductor core 401 through the conductor plate 201, and the voltage sensor 209 continuously monitors the voltage status of the conductor core 401 through the conductor plate 201, and monitors the transmission of the obtained electrical signals. The signal is sent to the processing module 211 for analysis and processing. When the temperature, current, or voltage is abnormal, the processing module 211 sends an electrical signal to the communication module 210, which converts it into a wireless signal and sends it to a remote terminal for alert. This allows maintenance personnel to detect the abnormal state of the high-voltage cable immediately. At the same time, the processing module 211 sends an activation signal to the warning light 213 to make it illuminate, which can be detected by inspection personnel immediately. Thus, the cause of the high-voltage cable fault can be determined in a timely manner based on the abnormal state of the high-voltage cable, and repairs can be carried out, which greatly improves maintenance efficiency and avoids safety accidents. In addition, the cable itself has good flexibility, and its outer sheath 101, which has the worst flexibility, is replaced with a low-smoke halogen-free material with better flexibility. This design protects the internal structure from external environmental influences while also preventing the production of toxic gases during combustion. This reduces environmental damage and simplifies repairs should a cable burn due to leakage. The low-smoke, halogen-free outer sheath 101, with its relatively low mechanical strength, incorporates shape memory metal strips 103 embedded in internal grooves 102. When the high-voltage cable bends, the strips have minimal impact on overall flexibility and significantly improve the tensile strength at both ends of the outer sheath 101. Furthermore, the numerous internal shape memory metal rings 104, concentric with the outer sheath 101, have minimal impact on the bending flexibility of the outer sheath 101 but effectively improve its compressive strength. This ensures the performance of the outer sheath 101 while effectively improving overall flexibility, facilitating subsequent installation and use. The three conductor cores 401 inside the high-voltage cable are each independently equipped with a heat insulation layer 402, a second shielding layer 403, a second insulation layer 404, and an inner sheath 405. This gives each conductor core 401 excellent heat insulation, signal shielding, insulation, and mechanical properties, allowing it to remain operational even with damage to the external structure, resulting in high reliability. The outer filling layer 34 has good insulation, corrosion resistance, and wear resistance, protecting the internal structure and filling the gaps between the three conductor cores 4, providing additional mechanical protection and insulation.The wrapping tape 31, encased on the outside, forms an insulating barrier, primarily providing additional insulation protection for the internal structure. It prevents external electric fields from affecting the internal conductor 401 and provides some mechanical protection, preventing damage to the high-voltage cable during installation and use. Simultaneously, the copper tape armor 3, made of bare copper tape, possesses excellent conductivity and corrosion resistance. Together, these features ensure the service life of this high-voltage cable.

[0043] The wiring diagrams for the current sensor 207, temperature sensor 208, voltage sensor 209, communication module 210, processing module 211, battery 212, and warning light 213 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring layouts for the current sensor 207, temperature sensor 208, voltage sensor 209, communication module 210, processing module 211, battery 212, and warning light 213 will not be explained in detail.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-voltage cable with good flexibility, comprising a protective mechanism (1) and a conductor mechanism (4), characterized in that: The protective mechanism (1) is equipped with a detection mechanism (2) on its exterior. The detection mechanism (2) includes a housing (203). A current sensor (207) is installed on the inner bottom of the housing (203) near the front side. A temperature sensor (208) is installed on the inner bottom of the housing (203) to the left of the current sensor (207). A voltage sensor (209) is installed on the inner bottom of the housing (203) behind the temperature sensor (208). A communication module (210) is installed on the inner bottom of the housing (203) behind the voltage sensor (209). A processing module (211) is installed on the inner bottom of the housing (203) to the right of the communication module (210). A battery (212) is installed on the inner bottom of the housing (203) to the right of the processing module (211). The protective mechanism (1) includes an outer sheath (101), and multiple embedded grooves (102) are equally spaced inside the outer sheath (101) near the outer surface. A memory metal strip (103) is welded inside the embedded groove (102). The outer sheath (101) has a slot (105) near the top of its front surface. The bottom of the outer shell (203) is fixedly connected to a plug (204). The plug (204) and the slot (105) are connected by a plug. Multiple memory metal rings (104) are equidistantly embedded in the inner side of the outer sheath (101) near the inner wall. The number of conductor mechanisms (4) is set to three. Each of the three conductor mechanisms (4) includes a conductor core (401). The three conductor cores (401) are respectively a live wire, a neutral wire, and a ground wire. A heat insulation layer (402) is provided on the outside of the conductor core (401). The bottom of the outer shell (203) is fixedly connected to the guide plate (201) near the front surface, and the outer surfaces of the three guide cores (401) all pass through the outer surface of the guide plate (201) and extend to the front side; Three retaining rings (202) are fixedly connected to the front surface of the guide plate (201). The position of the retaining rings (202) corresponds to the position of the guide core (401), and the inner wall of the retaining rings (202) and the inner wall of the guide core (401) are tightly fitted together.

2. The high-voltage cable with good flexibility according to claim 1, characterized in that: The heat insulation layer (402) is provided with a second shielding layer (403) on the outside, the second shielding layer (403) is provided with a second insulating layer (404) on the outside, and the second insulating layer (404) is provided with an inner sheath (405) on the outside.

3. A high-voltage cable with good flexibility according to claim 2, characterized in that: A warning light (213) is installed on the inner bottom of the outer casing (203) at the position to the right of the battery (212). A sealing ring (205) is bonded to the top edge of the outer casing (203), and a sealing cover (206) is fixedly installed on the top of the sealing ring (205).

4. A high-voltage cable with good flexibility according to claim 3, characterized in that: A filling layer (34) is provided between the outer surfaces of the three inner sheaths (405), a first shielding layer (33) is provided outside the filling layer (34), and a first insulating layer (32) is provided outside the first shielding layer (33).

5. A high-voltage cable with good flexibility according to claim 4, characterized in that: The first insulating layer (32) is provided with a wrapping tape (31) on the outside, and the wrapping tape (31) is provided with a copper strip armor (3) on the outside.

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