Electric power overhaul safety alarm device

Abstract

The invention provides an electric power overhaul safety alarm device which comprises two semi-circular ring type main bodies which are detachably spliced, and a circular ring detector is formed after splicing and is easily connected to a target cable in a sleeving mode. A power supply is arranged in each semicircular main body, a semicircular groove is formed in the surface of each semicircular main body, and positive and negative conductive layers and conductive cylinders are respectively distributed on the inner wall of each groove. When in use, a worker only needs to splice the two semicircular rings, sleeve a cable and turn on a power supply. A magnetic field generated by electrifying the target cable interacts with current in the conductive cylinder, and Ampere force is generated to drive the detector to move along the cable. If the cable has a defect, the change of the magnetic field causes the reduction of the Ampere force and further affects the moving speed or acceleration of the detector, and the processor judges the defect point accordingly. According to the device, the manual maintenance cost is remarkably reduced, the maintenance efficiency and accuracy are improved, and the safety of workers is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of power maintenance, and in particular to a power maintenance safety alarm device. Background Art

[0002] As an important carrier of power transmission, DC cables are widely used in high-voltage transmission lines, submarine cables, photovoltaic systems and other fields. With its efficient transmission performance, it meets the needs of long-distance and large-capacity power. However, as the service life increases, DC cables face many potential failure problems, such as cable skin damage, cable conductor breakage, and grooving. These problems may lead to a decrease in transmission capacity and seriously threaten the stable operation of the power system.

[0003] Traditional manual maintenance methods have significant drawbacks when dealing with DC cable faults. On the one hand, manual inspections require a lot of manpower and material resources, which is costly; on the other hand, the DC cable laying environment is complex and changeable, and maintenance personnel face high-risk environments such as high-altitude operations and underwater operations, which are prone to safety accidents. In addition, manual detection methods often make it difficult to accurately locate the fault point, affecting maintenance efficiency and accuracy. Summary of the invention

[0004] The purpose of this application is to provide an electric power maintenance safety alarm device, which can improve the above-mentioned problems.

[0005] The embodiment of the present application is implemented as follows:

[0006] The present application provides a power maintenance safety alarm device, which includes two semi-circular ring-shaped bodies that can be detachably spliced ​​to form a circular ring detector, wherein the size of the central circular hole of the circular ring detector is greater than or equal to the outer diameter of the target cable to be repaired;

[0007] The semicircular ring-shaped body is provided with a power source, a semicircular ring surface of the semicircular ring-shaped body is provided with a semicircular ring-shaped groove, a first arc-shaped inner wall of the semicircular ring-shaped groove is provided with a positive electrode conductive layer connected to the positive electrode of the power source, a second arc-shaped inner wall of the semicircular ring-shaped groove is provided with a negative electrode conductive layer connected to the negative electrode of the power source, and at least one conductive column is provided between the positive electrode conductive layer and the negative electrode conductive layer;

[0008] At least one of the semi-circular ring-shaped bodies is provided with a processor, a speed sensor and a communication module electrically connected to the processor; the speed sensor is used to monitor the moving speed of the circular ring detector, and the processor is used to detect defect points of the target cable according to the moving speed, and transmit the detection results to the central terminal through the communication module.

[0009] It can be understood that since the target cable will generate direct current when energized, a magnetic field will be generated around the target cable according to the right-hand screw rule. After the power is turned on, the conductive cylinder will generate current in the magnetic field. Therefore, the conductive cylinder will be subjected to the Ampere force along the extension direction of the target cable, thereby driving the entire ring detector to move along the extension direction of the target cable. If a defect occurs at a certain position of the target cable, the magnetic field generated at that position will change, thereby reducing the above-mentioned Ampere force. Therefore, the defective point of the cable is determined by monitoring the moving speed or acceleration of the ring detector. When there is a defect at a certain position of the cable, the magnetic field at that position will change, resulting in a decrease in the Ampere force, and the moving speed or acceleration of the ring detector will also change accordingly. By capturing these changes, the processor can accurately locate the defective point of the cable.

[0010] It can be understood that the present application provides a power maintenance safety alarm device, including two detachable and spliced ​​semi-circular ring-shaped bodies, which are spliced ​​to form a ring detector, which can be easily sleeved on the target cable. Each semi-circular ring-shaped body has a built-in power supply, and a semi-circular groove is provided on the surface, and the inner wall of the groove is respectively provided with positive and negative conductive layers and conductive cylinders. When in use, the staff only needs to splice the two semi-circular rings and sleeve the cable, and turn on the power. The device uses the magnetic field generated by the power supply of the cable to interact with the current in the conductive cylinder to generate an Ampere force to drive the detector to move along the cable. If there is a defect in the cable, the change in the magnetic field there causes the Ampere force to decrease, thereby affecting the moving speed or acceleration of the detector, and the processor determines the defect point based on this. This device significantly reduces the cost of manual maintenance and improves the efficiency and accuracy of maintenance. The non-contact detection method is adopted, and the interaction between the cable's own magnetic field and the conductive cylinder is used, which is safe and reliable, avoids a high-risk working environment, and effectively ensures the safety of the staff.

[0011] In an optional embodiment of the present application, after the two semi-circular ring-shaped bodies are spliced ​​together, the two semi-circular ring-shaped grooves are spliced ​​into a complete circular ring-shaped groove, and the central axis of the circular ring-shaped groove coincides with the central axis of the circular ring detector; the conductive column is perpendicular to the first arc-shaped inner wall and the second arc-shaped inner wall at the same time.

[0012] In an optional embodiment of the present application, the processor is used to detect whether the target cable is normal based on the moving speed, including: when the moving speed is less than a preset speed threshold, recording the current position of the ring detector on the target cable as a defect point of the target cable.

[0013] In an optional embodiment of the present application, an arc-shaped groove is provided on the third arc-shaped inner wall of the semicircular ring-shaped body, and at least one electromagnetic coil connected to the power supply is provided on the fourth arc-shaped inner wall of the arc-shaped groove, and a semicircular ring-shaped mover is accommodated in the arc-shaped groove; when the two semicircular ring-shaped bodies are spliced ​​into a ring detector, the semicircular ring-shaped movers in the two semicircular ring-shaped bodies are also spliced ​​into a ring mover; a laser detector for detecting the thickness of the target cable skin is provided on the inner wall of the ring mover, and the laser detector is electrically connected to the processor; a magnetic part is embedded on the outer wall of the ring mover at a position opposite to the electromagnetic coil, and the magnetic part generates a driving force along the tangential direction of the outer wall of the semicircular ring mover under the drive of the magnetic field generated after the electromagnetic coil is energized, thereby driving the semicircular ring mover to rotate relative to the semicircular ring-shaped body.

[0014] It can be understood that in the process of the ring detector moving along the target cable, the electromagnetic coil is energized to generate a magnetic field, driving the ring mover to rotate around the target cable. The laser detector rotates with the mover, emitting lasers in all directions and receiving the reflected lasers. By calculating the time it takes for the laser to be emitted and returned, the distance of the reflector can be determined. When the distance decreases, it means that the laser has encountered a damaged part of the cable skin, because the damaged part will change the reflection path of the laser, resulting in a shorter received laser duration. The ring detector moves along the cable, and the ring mover rotates around the cable. The laser detector continuously emits and receives lasers. The processor analyzes the changes in laser duration in real time. When the duration is found to be abnormally reduced, it is determined that the cable skin is damaged and the damaged location is recorded.

[0015] It can be understood that the design of the ring mover realizes all-round and no-dead-angle detection of the cable skin, greatly improving the accuracy and efficiency of detection. At the same time, laser detection has the advantages of non-contact, high precision, and rapid response. It can timely detect and locate the damage of the cable skin, providing strong technical support for the maintenance and repair of the cable.

[0016] In an optional embodiment of the present application, the circular detector is provided with M symmetrically distributed electromagnetic coils, M is a positive integer greater than 1, and the circular mover is provided with N symmetrically distributed magnetic parts, N is a positive integer greater than 1; the magnetic parts are driven by the magnetic field of the electromagnetic coils and can at least move to the position of the next electromagnetic coil.

[0017] In an optional embodiment of the present application, the magnet member includes an S-pole magnet and an N-pole magnet connected in sequence, and the direction from the S-pole magnet to the N-pole magnet coincides with the direction of the driving force.

[0018] In an optional embodiment of the present application, the annular mover includes a first semicircular mover and a second semicircular mover, the splicing surface of the first semicircular mover is embedded with a first magnet, the splicing surface of the second semicircular mover is embedded with a second magnet, the magnetic properties of the first magnet and the second magnet are opposite, the first semicircular mover absorbs the second magnet on the second semicircular mover through the first magnet, thereby achieving splicing to form the annular mover.

[0019] In an optional embodiment of the present application, a third magnet is embedded on the splicing surface of the first semicircular ring-shaped body of the two semicircular ring-shaped bodies, and a fourth magnet is embedded on the splicing surface of the second semicircular ring-shaped body. The magnetic properties of the third magnet are opposite to those of the fourth magnet. The first semicircular ring-shaped body absorbs the fourth magnet on the second semicircular ring-shaped body through the third magnet, thereby achieving splicing to form the circular detector.

[0020] In an optional embodiment of the present application, the outer wall of the ring detector is also provided with a distance detector and an alarm device electrically connected to the processor; the processor is also used to control the alarm device to perform an alarm operation when the object distance fed back by the distance detector is less than a preset distance value.

[0021] In an optional embodiment of the present application, the alarm device includes at least one of a warning light, a speaker, and a display.

[0022] It is understandable that the ring detector may be disturbed by unintentional collisions with surrounding people or objects, thereby affecting the accuracy of the detection results. To address this problem, my application adopts a technical solution of installing a distance detector and an alarm device on the outer wall of the ring detector. The distance detector can continuously monitor the distance between the detector and surrounding objects (including people). Once an object approaches within a preset safe distance, the alarm device will be triggered. For example, when conducting cable maintenance in a busy power facility area, workers and other pedestrians may inadvertently approach the detector. When the distance detector senses that someone is approaching, the alarm device will immediately remind the relevant personnel to keep their distance by flashing warning lights, sounding speakers, or display prompts, thereby ensuring that the detection process is not disturbed.

[0023] Beneficial effects:

[0024] The present application provides a power maintenance safety alarm device, including two detachable and spliced ​​semi-circular ring-shaped bodies, which form a ring detector after splicing and can be easily sleeved on the target cable. Each semi-circular ring-shaped body has a built-in power supply, and a semi-circular groove is provided on the surface, and the inner wall of the groove is respectively provided with positive and negative conductive layers and conductive cylinders. When in use, the staff only needs to splice the two semi-circular rings and sleeve the cable, and turn on the power. The device uses the magnetic field generated by the power supply of the cable to interact with the current in the conductive cylinder to generate an Ampere force to drive the detector to move along the cable. If there is a defect in the cable, the change in the magnetic field there causes the Ampere force to decrease, thereby affecting the moving speed or acceleration of the detector, and the processor determines the defect point based on this. This device significantly reduces the cost of manual maintenance and improves the efficiency and accuracy of maintenance. It adopts a non-contact detection method, using the interaction between the cable's own magnetic field and the conductive cylinder, which is both safe and reliable, and avoids a high-risk working environment, effectively ensuring the safety of the staff.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, optional embodiments are specifically listed below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This application provides a schematic diagram of the appearance and structure of a power maintenance safety alarm device;

[0028] Figure 2 yes Figure 1 The schematic diagram of the working status of the power maintenance safety alarm device shown;

[0029] Figure 3 It is a schematic diagram of the structure of two semi-circular ring-shaped bodies provided by the present application;

[0030] Figure 4 is along Figure 3 The dashed line is a schematic cross-sectional view of the ring detector;

[0031] Figure 5 yes Figure 3 A schematic diagram of the splitting of a single semi-circular ring-shaped body is shown;

[0032] Figure 6 It is a schematic diagram of the rotation principle of the annular mover 60 provided in the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] like Figure 1 As shown, the present application provides a power maintenance safety alarm device, which includes a first semi-circular ring-shaped body 10 and a second semi-circular ring-shaped body 20 that can be detachably spliced, and a ring detector is formed after splicing. The size of the central circular hole of the ring detector is greater than or equal to the outer diameter of the target cable 100 to be repaired. When in use, the staff needs to splice the two semi-circular rings and sleeve them on the target cable 100, such as Figure 2 shown.

[0035] Next, Figure 3 The first semi-circular ring-shaped body 10 in the figure is used as an example for description, and the structure of the second semi-circular ring-shaped body 20 is consistent with that of the first semi-circular ring-shaped body 10. A power source (not shown in the figure) is arranged on the first semi-circular ring-shaped body 10, a semi-circular ring-shaped groove 11 is arranged on a half-circular ring surface of the first semi-circular ring-shaped body 10, a positive electrode conductive layer connected to the positive electrode of the power source is arranged on the first arc-shaped inner wall 12 of the semi-circular ring-shaped groove 11, a negative electrode conductive layer connected to the negative electrode of the power source is arranged on the second arc-shaped inner wall 13 of the semi-circular ring-shaped groove 11, and at least one conductive column 14 is arranged between the positive electrode conductive layer and the negative electrode conductive layer.

[0036] In an optional embodiment of the present application, if Figure 4 As shown, after the two semi-circular ring-shaped bodies are spliced, the two semi-circular ring grooves are spliced ​​into a complete circular ring groove 15, and the center axis of the circular ring groove 15 coincides with the center axis of the circular ring detector; the conductive column 14 is perpendicular to the first arc inner wall 12 and the second arc inner wall 13. It can be understood that since the target cable 100 will generate direct current when powered on, Figure 4 The target cable shown generates a current toward the inside of the paper. According to the right-hand screw rule, the direct current will generate a magnetic field E around the target cable 100. After the power is turned on, the conductive cylinder 14 generates a current i in the magnetic field. Therefore, the conductive cylinder 14 will be subjected to the Ampere force along the extension direction of the target cable 100, thereby driving the entire ring detector to move along the extension direction of the target cable 100. If a defect occurs at a certain position of the target cable 100, the magnetic field generated at that position will change, thereby reducing the above-mentioned Ampere force. Therefore, the defect point of the cable is determined by monitoring the moving speed or acceleration of the ring detector. When there is a defect at a certain position of the cable, the magnetic field at that position will change, resulting in a reduction in the Ampere force, and the moving speed or acceleration of the ring detector will also change accordingly.

[0037] In the first semi-circular ring-shaped body 10 and the second semi-circular ring-shaped body 20, at least one of the semi-circular ring-shaped bodies is provided with a processor, a speed sensor and a communication module electrically connected to the processor; the speed sensor is used to monitor the moving speed of the ring detector, and the processor is used to detect the defect points of the target cable according to the moving speed, and transmit the detection results to the central terminal through the communication module.

[0038] It can be understood that the present application provides a power maintenance safety alarm device. When in use, if there is a defect in the cable, the change in the magnetic field there causes the Ampere force to decrease, thereby affecting the moving speed or acceleration of the detector, and the processor determines the defect point accordingly. This device significantly reduces the cost of manual maintenance and improves maintenance efficiency and accuracy. The non-contact detection method is adopted, and the interaction between the cable's own magnetic field and the conductive cylinder is utilized, which is safe and reliable, and avoids a high-risk working environment, effectively ensuring the safety of the staff.

[0039] In an optional embodiment of the present application, the processor is used to detect whether the target cable is normal based on the moving speed, including: when the moving speed is less than a preset speed threshold, recording the current position of the ring detector on the target cable as a defect point of the target cable.

[0040] by Figure 5 Taking the first semi-circular ring-shaped body 10 in the embodiment as an example, an arc-shaped groove 17 is arranged on the third arc-shaped inner wall 16 of the first semi-circular ring-shaped body 10, at least one electromagnetic coil 30 connected to the power source is arranged on the fourth arc-shaped inner wall 18 of the arc-shaped groove 17, and a first semi-circular ring-shaped mover 40 is accommodated in the arc-shaped groove 17. When two semi-circular ring-shaped bodies are spliced ​​into a ring detector, the semi-circular ring-shaped movers in the two semi-circular ring-shaped bodies are also spliced ​​into a ring mover 60, such as Figure 6 The inner wall of the annular mover 60 is provided with a laser detector (not shown in the figure) for detecting the skin thickness of the target cable 100, and the laser detector is electrically connected to the processor. Figure 6 As shown, a magnet part 61 is embedded on the outer wall of the annular mover 60 at a position directly opposite to the electromagnetic coil 30. Driven by the magnetic field generated after the electromagnetic coil 30 is energized, the magnet part 61 generates a driving force along the tangential direction of the outer wall of the annular mover 60, thereby driving the annular mover 60 to rotate relative to the semi-circular ring-shaped body.

[0041] It can be understood that in the process of the ring detector moving along the target cable, the electromagnetic coil is energized to generate a magnetic field, driving the ring mover to rotate around the target cable. The laser detector rotates with the mover, emitting lasers in all directions and receiving the reflected lasers. By calculating the time it takes for the laser to be emitted and returned, the distance of the reflector can be determined. When the distance decreases, it means that the laser has encountered a damaged part of the cable skin, because the damaged part will change the reflection path of the laser, resulting in a shorter received laser duration. The ring detector moves along the cable, and the ring mover rotates around the cable. The laser detector continuously emits and receives lasers. The processor analyzes the changes in laser duration in real time. When the duration is found to be abnormally reduced, it is determined that the cable skin is damaged and the damaged location is recorded.

[0042] It can be understood that the design of the ring mover realizes all-round and no-dead-angle detection of the cable skin, greatly improving the accuracy and efficiency of detection. At the same time, laser detection has the advantages of non-contact, high precision, and rapid response. It can timely detect and locate the damage of the cable skin, providing strong technical support for the maintenance and repair of the cable.

[0043] In an optional embodiment of the present application, M electromagnetic coils are symmetrically distributed in the circular ring detector, M is a positive integer greater than 1, and N magnetic parts are symmetrically distributed on the circular ring mover, N is a positive integer greater than 1; the magnetic parts can at least move to the position of the next electromagnetic coil under the drive of the magnetic field of the electromagnetic coil.

[0044] In an optional embodiment of the present application, if Figure 5 and Figure 6 As shown, the magnet member 61 includes an S-pole magnet and an N-pole magnet connected in sequence, and the direction from the S-pole magnet to the N-pole magnet coincides with the direction of the driving force.

[0045] In an optional embodiment of the present application, if Figure 3 As shown, the annular mover includes a first semicircular mover 40 and a second semicircular mover (not shown in the figure), the splicing surface of the first semicircular mover 40 is embedded with a first magnet 51, and the splicing surface of the second semicircular mover is embedded with a second magnet (not shown in the figure), the magnetic properties of the first magnet 51 are opposite to those of the second magnet, and the first semicircular mover 40 absorbs the second magnet on the second semicircular mover through the first magnet 51, thereby achieving splicing to form an annular mover.

[0046] In an optional embodiment of the present application, if Figure 3As shown, a third magnet 52 is embedded on the splicing surface of the first semi-circular body 10 of the two semi-circular bodies, and a fourth magnet (not shown in the figure) is embedded on the splicing surface of the second semi-circular body 20. The third magnet 52 has opposite magnetic properties to the fourth magnet. The first semi-circular body 10 absorbs the fourth magnet on the second semi-circular body 20 through the third magnet 52, thereby achieving splicing to form a circular detector.

[0047] In an optional embodiment of the present application, the outer wall of the ring detector is further provided with a distance detector and an alarm device electrically connected to the processor; the processor is further used to control the alarm device to perform an alarm operation when the object distance fed back by the distance detector is less than a preset distance value. In an optional embodiment of the present application, the alarm device includes at least one of a warning light, a speaker, and a display.

[0048] It is understandable that the ring detector may be disturbed by unintentional collisions with surrounding people or objects, thereby affecting the accuracy of the detection results. To address this problem, my application adopts a technical solution of installing a distance detector and an alarm device on the outer wall of the ring detector. The distance detector can continuously monitor the distance between the detector and surrounding objects (including people). Once an object approaches within a preset safe distance, the alarm device will be triggered. For example, when conducting cable maintenance in a busy power facility area, workers and other pedestrians may inadvertently approach the detector. When the distance detector senses that someone is approaching, the alarm device will immediately remind the relevant personnel to keep their distance by flashing warning lights, sounding speakers, or display prompts, thereby ensuring that the detection process is not disturbed.

[0049] It should be understood that in the embodiments of the present invention, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0050] The expressions "first", "second", "the first" or "the second" used in various embodiments of the present disclosure may modify various components regardless of order and / or importance, but these expressions do not limit the corresponding components. The above expressions are only configured for the purpose of distinguishing an element from other elements. For example, a first user device and a second user device represent different user devices, although both are user devices. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

[0051] When one element (e.g., a first element) is referred to as being "(operably or communicatively) coupled" or "(operably or communicatively) coupled to" or "connected to" another element (e.g., a second element), it is understood that the one element is directly connected to the other element or the one element is indirectly connected to the other element via yet another element (e.g., a third element). Conversely, it is understood that when an element (e.g., a first element) is referred to as being "directly connected" or "directly coupled" to another element (the second element), no element (e.g., a third element) is interposed between the two.

[0052] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0053] The above description is only an optional embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above invention concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0054] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0055] The above description is only an optional embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A power maintenance safety alarm device, characterized in that: It comprises two semi-circular ring-shaped bodies which can be detachably spliced ​​and formed into a circular ring detector after splicing, wherein the size of the central circular hole of the circular ring detector is greater than or equal to the outer diameter of the target cable to be repaired; The semicircular ring-shaped body is provided with a power source, a semicircular ring surface of the semicircular ring-shaped body is provided with a semicircular ring-shaped groove, a first arc-shaped inner wall of the semicircular ring-shaped groove is provided with a positive electrode conductive layer connected to the positive electrode of the power source, a second arc-shaped inner wall of the semicircular ring-shaped groove is provided with a negative electrode conductive layer connected to the negative electrode of the power source, and at least one conductive column is provided between the positive electrode conductive layer and the negative electrode conductive layer; At least one of the semi-circular ring-shaped bodies is provided with a processor, a speed sensor and a communication module electrically connected to the processor; the speed sensor is used to monitor the moving speed of the circular ring detector, and the processor is used to detect defect points of the target cable according to the moving speed, and transmit the detection results to the central terminal through the communication module.

2. The power maintenance safety alarm device according to claim 1 is characterized in that: After the two semi-circular ring-shaped bodies are spliced ​​together, the two semi-circular ring-shaped grooves are spliced ​​into a complete circular ring-shaped groove, and the central axis of the circular ring-shaped groove coincides with the central axis of the circular ring detector; the conductive column is perpendicular to the first arc-shaped inner wall and the second arc-shaped inner wall at the same time.

3. The power maintenance safety alarm device according to claim 2 is characterized in that: The processor is used to detect whether the target cable is normal according to the moving speed, including: when the moving speed is less than a preset speed threshold, recording the current position of the ring detector on the target cable as a defect point of the target cable.

4. The power maintenance safety alarm device according to claim 1, characterized in that: An arc-shaped groove is arranged on the third arc-shaped inner wall of the semicircular ring-shaped body, at least one electromagnetic coil connected to the power source is arranged on the fourth arc-shaped inner wall of the arc-shaped groove, and a semicircular ring-shaped mover is accommodated in the arc-shaped groove; When the two semi-circular ring-shaped bodies are spliced ​​into a circular ring detector, the semi-circular ring-shaped movers in the two semi-circular ring-shaped bodies are also spliced ​​into a circular ring mover; The inner wall of the annular mover is provided with a laser detector for detecting the thickness of the target cable skin, and the laser detector is electrically connected to the processor; A magnet is embedded on the outer wall of the circular mover at a position opposite to the electromagnetic coil. Driven by the magnetic field generated when the electromagnetic coil is energized, the magnet generates a driving force along the tangential direction of the outer wall of the semicircular mover, thereby driving the semicircular mover to rotate relative to the semicircular ring-shaped body.

5. The power maintenance safety alarm device according to claim 4 is characterized in that: The circular ring detector is provided with M electromagnetic coils which are symmetrically distributed, M is a positive integer greater than 1, and the circular ring mover is provided with N magnetic parts which are symmetrically distributed, N is a positive integer greater than 1; Driven by the magnetic field of the electromagnetic coil, the magnetic member can at least move to the position of the next electromagnetic coil.

6. The power maintenance safety alarm device according to claim 5, characterized in that: The magnet member includes an S-pole magnet and an N-pole magnet connected in sequence, and a direction from the S-pole magnet to the N-pole magnet coincides with a direction of the driving force.

7. The power maintenance safety alarm device according to claim 4, characterized in that: The annular mover includes a first semicircular mover and a second semicircular mover, the splicing surface of the first semicircular mover is embedded with a first magnet, the splicing surface of the second semicircular mover is embedded with a second magnet, the magnetic properties of the first magnet and the second magnet are opposite, the first semicircular mover absorbs the second magnet on the second semicircular mover through the first magnet, thereby achieving splicing to form the annular mover.

8. The electric power maintenance safety alarm device according to any one of claims 1 to 7, characterized in that: A third magnet is embedded on the splicing surface of the first of the two semicircular ring-shaped bodies, and a fourth magnet is embedded on the splicing surface of the second semicircular ring-shaped body. The magnetic properties of the third magnet and the fourth magnet are opposite. The first semicircular ring-shaped body absorbs the fourth magnet on the second semicircular ring-shaped body through the third magnet, thereby achieving splicing to form the circular detector.

9. The electric power maintenance safety alarm device according to any one of claims 1 to 7, characterized in that: The outer wall of the ring detector is also provided with a distance detector and an alarm device electrically connected to the processor; The processor is further configured to control the alarm device to perform an alarm operation when the object distance fed back by the distance detector is less than a preset distance value.

10. The electric power maintenance safety alarm device according to claim 9, characterized in that: The alarm device includes at least one of a warning light, a speaker, and a display.

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