A cable fault monitoring device

Abstract

This utility model discloses a cable fault monitoring device, including an upper housing and a lower housing. One side of the upper housing is rotatably connected to one side of the lower housing, and the other side of the upper housing and the lower housing are detachably connected. Each side of the upper and lower housing has a placement groove that contacts the outer surface of the cable. A monitoring mechanism for monitoring cable temperature is installed inside the placement groove. This technical solution reduces the labor intensity of workers and decreases the occurrence of missed detections and misjudgments.

Description

Technical Field

[0001] This utility model relates to the field of fault monitoring equipment technology, and in particular to a cable fault monitoring device. Background Technology

[0002] Cable monitoring refers to the regular monitoring, measurement, and analysis of cable systems to ensure their stable operation, timely detection of potential faults, and implementation of appropriate maintenance and repair measures. The purpose of cable temperature monitoring is to improve the reliability of cable systems, extend cable life, and reduce the impact of faults on the system.

[0003] Currently, traditional cable monitoring mainly relies on regular manual inspections and emergency repairs after faults, a model with significant limitations. Manual inspections require monitoring personnel to randomly check cable nodes using tools such as infrared thermometers, which makes it difficult to capture temperature anomalies in the cable during operation in real time, increasing the labor intensity of workers. Furthermore, environmental factors (such as high temperatures, heavy rain, and harsh conditions like underground pipe corridors) and the subjective judgment of inspection personnel can easily lead to missed detections or misjudgments. Utility Model Content

[0004] The main purpose of this invention is to provide a cable fault monitoring device that aims to reduce the labor intensity of workers and reduce the occurrence of missed detections and misjudgments.

[0005] To achieve the above objectives, this utility model proposes a cable fault monitoring device, including an upper housing and a lower housing. One side of the upper housing is rotatably connected to one side of the lower housing, and the other side of the upper housing and the lower housing are detachably connected. Each side of the upper housing and the lower housing is provided with a placement groove that contacts the outer surface of the cable. A monitoring mechanism for monitoring the cable temperature is provided inside the placement groove.

[0006] In one possible implementation, the monitoring mechanism includes hollow heat-conducting blocks respectively disposed on both sides inside the upper housing, first heat-conducting blocks respectively disposed on both sides inside the lower housing, a connecting pipe connecting the two hollow heat-conducting blocks, an alarm pipe disposed on one side of the connecting pipe, and an alarm component disposed on the alarm pipe. The opposite sides of the first heat-conducting blocks and the hollow heat-conducting blocks abut against each other. The opposite sides of the hollow heat-conducting blocks and the first heat-conducting blocks are each provided with an annular groove for contacting the outer surface of the cable. The hollow heat-conducting blocks contain thermally expanding liquid.

[0007] In one possible implementation, the alarm assembly includes a monitoring box, a pressure sensor, a piston rod, and a buzzer disposed on the side of the monitoring box and electrically connected to the pressure sensor. The monitoring box is fixedly connected to the interior of the upper housing. One side of the alarm tube extends into the interior of the monitoring box. The piston rod is slidably connected to the inner wall of the alarm tube on the side away from the connecting pipe, and one side of the piston rod extends to the outside of the alarm tube. The pressure sensor is disposed inside the monitoring box on the side near the piston rod.

[0008] In one possible implementation, an elastic element is also included, wherein a pull plate is fixedly connected to one side of the piston rod outside the alarm tube, a fixing plate is fixedly connected to the side of the alarm tube near the pull plate, and the two sides of the elastic element are fixedly connected to the pull plate and the fixing plate on opposite sides, respectively.

[0009] In one possible implementation, the elastic element is sleeved on the outer surface of the alarm tube, and the pull plate and the bottom plate are each provided with a mounting groove on opposite sides, with the two ends of the elastic element being fixedly connected to the interior of the corresponding mounting groove.

[0010] In one possible implementation, a support plate is fixedly connected to the inside of the monitoring box near the piston rod, the pressure sensor is mounted on the support plate and fixedly connected to the support plate, and a box cover is provided on the top of the monitoring box, and the box cover is fixedly connected to the monitoring box by bolts.

[0011] In one possible implementation, a first extension plate is provided on one side of the upper housing, and a second extension plate is provided on the side of the lower housing near the first extension plate. A first magnet and a second magnet are respectively provided on the opposite sides of the first extension plate and the second extension plate, and the first magnet and the second magnet attract each other.

[0012] This invention's technical solution, through the design of an upper shell, a lower shell, a monitoring mechanism, and a detachable connection structure, allows workers to quickly install the upper and lower shells onto cable nodes, reducing installation time and difficulty. Simultaneously, the placement groove contacts the cable's outer surface, enabling the monitoring mechanism to directly acquire cable temperature data. Compared to traditional manual inspection methods, this solution achieves continuous cable temperature monitoring, enabling real-time detection of temperature anomalies, reducing worker workload, and minimizing missed detections and misjudgments. Furthermore, this structural design is easy to install and can be widely applied to cables of the same specification but in different scenarios. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the present invention;

[0017] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0018] Figure 5 This is a schematic diagram of the open structure of the upper and lower shells in this embodiment.

[0019] Reference numerals: 1. Upper housing; 101. Lower housing; 102. Placement slot; 2. Hollow heat-conducting block; 201. First heat-conducting block; 202. Connecting pipe; 203. Alarm pipe; 204. Annular groove; 3. Monitoring box; 301. Pressure sensor; 302. Piston rod; 303. Buzzer; 304. Elastic element; 305. Pull plate; 306. Fixing plate; 307. Mounting slot; 308. Support plate; 309. Box cover; 310. Bolt; 4. First extension plate; 401. Second extension plate; 402. First magnet; 403. Second magnet; 5. Cable.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] refer to Figure 1-5This embodiment proposes a cable fault monitoring device, including an upper housing 1 and a lower housing 101. One side of the upper housing 1 is rotatably connected to one side of the lower housing 101, and the other side of the upper housing 1 and the lower housing 101 are detachably connected. Each side of the upper housing 1 and the lower housing 101 is provided with a placement groove 102 that contacts the outer surface of the cable 5. The placement groove 102 is provided with a monitoring mechanism for monitoring the temperature of the cable 5.

[0023] In addition, a support block can be installed at the bottom of the lower housing 101 so that the device can be placed stably on the ground when monitoring the cable 5.

[0024] Specifically, the monitoring mechanism includes hollow heat-conducting blocks 2 respectively disposed on both sides inside the upper housing 1, first heat-conducting blocks 201 respectively disposed on both sides inside the lower housing 101, a connecting pipe 202 connecting the two hollow heat-conducting blocks 2, an alarm pipe 203 disposed on one side of the connecting pipe 202, and an alarm component disposed on the alarm pipe 203. The opposite sides of the first heat-conducting blocks 201 and the hollow heat-conducting blocks 2 abut against each other. Both the opposite sides of the hollow heat-conducting blocks 2 and the first heat-conducting blocks 201 are provided with annular grooves 204 for contacting the outer surface of the cable 5. The hollow heat-conducting blocks 2 contain a thermal expansion liquid, which can be alcohol, as alcohol has excellent sensitivity and a small change in temperature can cause significant volume expansion. The first heat-conducting blocks 201 and the hollow heat-conducting blocks 2 can be made of copper.

[0025] It is worth noting that the alcohol inside the hollow heat-conducting block 2 does not need to be completely filled; it is sufficient to cover the surface of the hollow heat-conducting block 2 that contacts the cable.

[0026] When the temperature of cable 5 rises, heat is conducted through the hollow heat-conducting block 2 and the first heat-conducting block 201, causing the thermally expanding liquid inside the hollow heat-conducting block 2 to expand due to heat. This increases the air pressure inside the hollow heat-conducting block 2, thereby triggering the alarm component. Compared with the traditional method that relies on subjective human judgment of cable 5 temperature, this structure achieves temperature monitoring through physical conduction and thermal expansion principles. It can more sensitively and objectively reflect the temperature changes of cable 5, avoiding missed detections or misjudgments caused by subjective factors, thereby improving the accuracy and reliability of monitoring.

[0027] Meanwhile, the annular groove 204 on one side of the hollow heat-conducting block 2 and the first heat-conducting block 201 can closely fit the circumferential surface of the cable 5, forming a 360° annular contact surface. This structure effectively avoids the heat source from appearing in any direction (such as the top, side, or bottom) due to problems such as local insulation aging or poor joint contact of the cable 5. The design of the annular groove 204 can simultaneously receive heat from all directions around the circumference of the cable 5, avoiding the defects of traditional planar contact that can only monitor one side or a local area. For example, when the bottom of the cable 5 heats up, the first heat-conducting block 201 in contact with the cable 5 will transfer the heat to the hollow heat-conducting block 2, causing the internal thermal expansion liquid to expand and trigger the alarm component; if the top of the cable 5 heats up, the heat will directly cause the thermal expansion liquid inside the hollow heat-conducting block 2 to expand and trigger the alarm component.

[0028] Furthermore, the alarm assembly includes a monitoring box 3, a pressure sensor 301, a piston rod 302, and a buzzer 303 disposed on the side of the monitoring box 3 and electrically connected to the pressure sensor 301. The monitoring box 3 is fixedly connected to the interior of the upper housing 1. One side of the alarm tube 203 extends into the interior of the monitoring box 3. The piston rod 302 is slidably connected to the inner wall of the alarm tube 203 on the side away from the connecting pipe 202, and one side of the piston rod 302 extends to the outside of the alarm tube 203. The pressure sensor 301 is disposed inside the monitoring box 3 on the side near the piston rod 302. The pressure sensor 301 can be a thin-film piezoresistive pressure sensor 301, which has high sensitivity and can ensure that minute pressure changes are detected.

[0029] When the thermally expanding liquid expands due to heat, the internal pressure of the hollow heat-conducting block 2 increases. The gas then enters the alarm tube 203 through the connecting pipe 202, exerting pressure on the piston rod 302. The piston rod 302 moves, compressing the pressure sensor 301. The pressure-sensitive element inside the pressure sensor 301 changes its resistance under pressure, converting the mechanical pressure signal into an electrical signal. This electrical signal, after amplification and processing, is transmitted to the buzzer 303, which is electrically connected to the pressure sensor 301, triggering an alarm. This design converts temperature changes into a readily perceptible alarm signal. Compared to manual inspections, which cannot promptly detect abnormal temperatures, this design can quickly issue an alarm when the cable 5 experiences abnormal temperatures, alerting maintenance personnel to address the issue promptly and effectively preventing safety accidents caused by excessive temperature.

[0030] In addition, it also includes an elastic element 304, a pull plate 305 fixedly connected to one side of the piston rod 302 outside the alarm tube 203 (it should be noted that the alarm tube 203 has a certain rigidity), a fixing plate 306 fixedly connected to the side of the alarm tube 203 near the pull plate 305, and the two sides of the elastic element 304 fixedly connected to the opposite sides of the pull plate 305 and the fixing plate 306, respectively.

[0031] When the piston rod 302 extends, the elastic element 304 is stretched under the action of the pull plate 305. The design of the elastic element 304 allows the piston rod 302 to be pulled back to its initial state after the temperature of the cable 5 returns to normal, thus facilitating the next monitoring and alarm. This avoids the inconvenience of the equipment failing to automatically reset after an alarm and requiring manual operation, improving the automation level and ease of use of the equipment, and ensuring long-term stable operation.

[0032] Furthermore, the elastic element 304 is sleeved on the outer surface of the alarm tube 203, and the pull plate 305 and the bottom plate are respectively provided with mounting grooves 307 on opposite sides. The two ends of the elastic element 304 are respectively fixedly connected to the inside of the corresponding mounting grooves 307.

[0033] The mounting slot 307 provides a mounting position for the elastic element 304, while reducing the possibility of the elastic element 304 shifting or misaligning during the stretching process. Fitting the elastic element 304 onto the outer surface of the alarm tube 203 helps reduce the possibility of radial deformation, thereby ensuring the accuracy and reliability of the alarm assembly reset.

[0034] In this embodiment, a support plate 308 is fixedly connected to the inside of the monitoring box 3 near the piston rod 302. The pressure sensor 301 is mounted on the support plate 308 and fixedly connected to it. A cover 309 is provided on the top of the monitoring box 3, and the cover 309 is fixedly connected to the monitoring box 3 by bolts 310. The support plate 308 supports and fixes the pressure sensor 301, ensuring its stable position. Furthermore, the bolted connection between the cover 309 and the monitoring box 3 facilitates opening the cover 309 to inspect and maintain internal components such as the pressure sensor 301. Compared to some non-removable structures, this method is more convenient for maintenance personnel to perform equipment maintenance and troubleshooting, reducing maintenance costs.

[0035] In this embodiment, a first extension plate 4 is provided on one side of the upper housing 1, and a second extension plate 401 is provided on the side of the lower housing 101 near the first extension plate 4. A first magnet 402 and a second magnet 403 are respectively provided on the opposite side of the first extension plate 4 and the second extension plate 401, and the first magnet 402 and the second magnet 403 attract each other.

[0036] The first magnet 402 and the second magnet 403 allow for a tighter connection between the upper housing 1 and the lower housing 101 after installation. Furthermore, compared to other complex connection structures, this magnetic connection method makes installation and disassembly more convenient. Disassembly only requires overcoming the attractive force between the first magnet 402 and the second magnet 403, without any additional complex operations. During installation, the worker simply brings the first extension plate 4 close to the second extension plate 401, and the first magnet 402 and the second magnet 403 will attract each other, achieving an automatic positioning effect.

[0037] Working principle:

[0038] In use, the worker first opens the upper housing 1 and the lower housing 101, placing the outer surface of the cable 5 into the annular groove 204. Then, the worker rotates one side of the upper housing 1 around the lower housing 101, causing the first extension plate 4 to fit against the second extension plate 401. Next, under the action of the first magnet 402 and the second magnet 403, the first extension plate 4 will be fixed to the second extension plate 401.

[0039] When cable 5 heats up, it transfers the temperature to the hollow heat-conducting block 2, causing the thermally expanding liquid to expand. This increases the internal pressure of the hollow heat-conducting block 2, allowing the gas to enter the alarm tube 203 through the connecting pipe 202. This gas then exerts pressure on the piston rod 302, causing it to move and compress the pressure sensor 301. The pressure-sensitive element inside the pressure sensor 301 changes its resistance under pressure, converting the mechanical pressure signal into an electrical signal. This electrical signal, after amplification and processing, is transmitted to the buzzer 303, which is electrically connected to the pressure sensor 301, triggering the buzzer 303 to operate.

[0040] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cable fault monitoring device, characterized in that: It includes an upper housing (1) and a lower housing (101). One side of the upper housing (1) is rotatably connected to one side of the lower housing (101), and the other side of the upper housing (1) and the lower housing (101) are detachably connected. Each side of the upper housing (1) and the lower housing (101) is provided with a placement groove (102) that contacts the outer surface of the cable. The placement groove (102) is provided with a monitoring mechanism for monitoring the cable temperature.

2. The cable fault monitoring device according to claim 1, characterized in that: The monitoring mechanism includes hollow heat-conducting blocks (2) respectively disposed on both sides inside the upper housing (1), first heat-conducting blocks (201) respectively disposed on both sides inside the lower housing (101), connecting pipe (202) connecting the two hollow heat-conducting blocks (2), alarm pipe (203) disposed on one side of the connecting pipe (202), and alarm component disposed on the alarm pipe (203). The first heat-conducting block (201) and the hollow heat-conducting block (2) are in contact with each other on opposite sides. The hollow heat-conducting block (2) and the first heat-conducting block (201) are each provided with an annular groove (204) for contacting the outer surface of the cable on opposite sides. The hollow heat-conducting block (2) is provided with thermal expansion liquid inside.

3. The cable fault monitoring device according to claim 2, characterized in that: The alarm assembly includes a monitoring box (3), a pressure sensor (301), a piston rod (302), and a buzzer (303) disposed on the side of the monitoring box (3) and electrically connected to the pressure sensor (301). The monitoring box (3) is fixedly connected to the interior of the upper housing (1). One side of the alarm tube (203) extends into the interior of the monitoring box (3). The piston rod (302) is slidably connected to the inner wall of the alarm tube (203) away from the connecting tube (202), and one side of the piston rod (302) extends into the exterior of the alarm tube (203). The pressure sensor (301) is disposed inside the monitoring box (3) on the side close to the piston rod (302).

4. The cable fault monitoring device according to claim 3, characterized in that: It also includes an elastic element (304), the piston rod (302) is fixedly connected to a pull plate (305) on one side outside the alarm tube (203), the alarm tube (203) is fixedly connected to a fixing plate (306) on the side near the pull plate (305), and the two sides of the elastic element (304) are fixedly connected to the opposite sides of the pull plate (305) and the fixing plate (306), respectively.

5. The cable fault monitoring device according to claim 4, characterized in that: The elastic element (304) is sleeved on the outer surface of the alarm tube (203). The pull plate (305) and the bottom plate are provided with mounting grooves (307) on opposite sides. The two ends of the elastic element (304) are fixedly connected to the inside of the corresponding mounting grooves (307).

6. The cable fault monitoring device according to claim 4, characterized in that: Inside the monitoring box (3), a support plate (308) is fixedly connected to the side near the piston rod (302). The pressure sensor (301) is mounted on the support plate (308) and fixedly connected to the support plate (308). The top of the monitoring box (3) is provided with a box cover (309), and the box cover (309) is fixedly connected to the monitoring box (3) by bolts (310).

7. The cable fault monitoring device according to claim 1, characterized in that: The upper housing (1) is provided with a first extension plate (4) on one side, and the lower housing (101) is provided with a second extension plate (401) on the side close to the first extension plate (4). The first extension plate (4) and the second extension plate (401) are respectively provided with a first magnet (402) and a second magnet (403) on opposite sides, and the first magnet (402) and the second magnet (403) attract each other.

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