A monitoring device for detecting a leakage position of a power cable

Abstract

The utility model discloses a kind of monitoring devices for power cable electric leakage position, it is related to electric leakage detection technical field, some electric wires are arranged in the pipeline or electric box inside relatively narrow space, the ring clamp of the clamp-on meter for carrying out electric leakage detection is relatively large in size, it is difficult to accurately penetrate into narrow space and be sleeved on the electric wire to be detected, usually need to be operated by hand to hook out electric wire outward, this operation has certain security risk, the utility model is additionally provided with cable hooking component in the bottom of clamp-on meter, when detecting cable inside narrow space, cable hooking component can be used to directly hook cable outward into clamp-on detection component inside to accept detection, clamp-on detection component does not need to stretch into and hold cable, it is simple and convenient to operate, and the position and angle of clamp-on meter can be more conveniently adjusted, cable is accurately clamped to measure, simultaneously, without using hand to pull out cable outward, it is convenient to improve the security of operation.

Description

Technical Field

[0001] This utility model relates to the field of leakage current detection technology, specifically a monitoring device for the location of leakage current in a power supply cable. Background Technology

[0002] Cables are crucial carriers of electricity. If a cable leaks current, a person who comes into contact with the leaking cable or a conductive object nearby may experience an electric shock. For example, in a home environment, if a wire inside a wall leaks current, touching a wall socket or metal furniture could result in a life-threatening electric shock. By detecting leaks in cables, potential hazards can be identified promptly, allowing for preventative measures to avoid electric shock.

[0003] Chinese Patent CN220171105U discloses a leakage current detector, which solves the problem that existing leakage current detectors require handling and placing a dustproof box, making them cumbersome to use. The leakage current detector includes a detection unit, an instrument clamp head, buttons, a display screen, a connector, a dustproof fixing component, and a rotating connection component. The rotating connection component includes a fixing part, a transmission part, and a connecting part. The dustproof fixing component includes a dustproof shell, a first magnetic strip, a locking part, and a second magnetic strip. By incorporating the dustproof shell, the first magnetic strip, the locking part, the second magnetic strip, the fixing part, the transmission part, and the connecting part, the leakage current detector is made easier to use, solving the problem of the cumbersome handling and dustproof box required in existing leakage current detectors.

[0004] Some electrical wires are installed inside conduits or electrical boxes in relatively confined spaces. The clamp meters used for leakage current detection have large ring clamps, making it difficult to accurately reach into the narrow space and fit onto the wire to be tested. Usually, the operator needs to hook the wire out by hand before clamping the ring clamp onto the outer ring of the wire for testing. Pulling the wire out by hand poses certain safety hazards.

[0005] To address the aforementioned issues, a monitoring device for the location of leakage in power supply cables is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a monitoring device for the location of leakage in power cables, which solves the problem in the background technology that the detection device is difficult to extend into narrow spaces to detect the leakage of wires, and that there are certain safety hazards in pulling the wire out by hand.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a monitoring device for the location of leakage current in a power supply cable, comprising a leakage current detection meter body, a cable hooking assembly installed at the bottom of the leakage current detection meter body, the cable hooking assembly including a fixing collar, the fixing collar being fixedly connected to the bottom of the leakage current detection meter body, a pull rod outer cylinder penetrating inside the fixing collar, and the pull rod outer cylinder and the fixing collar being slidably connected, a hook end being fixedly connected to the end of the pull rod outer cylinder, and a hook connecting block being integrally connected to the side of the hook end, a hook front end being integrally connected to the end of the hook connecting block, and a hooking opening being provided on the inner wall of the hook front end, the hooking opening being semi-circular in shape.

[0008] Preferably, a limiting component is provided on the side of the fixing collar. The limiting component includes a limiting slot, which is located on the side of the outer cylinder of the pull rod. A clamp-shaped detection component is installed at the end of the main body of the leakage current detector. The clamp-shaped detection component includes a rotating shaft, which is fixedly connected to the main body of the leakage current detector. A rotating clamp head is rotatably connected to one side of the rotating shaft, and a fixed clamp head is fixedly connected to the other side of the rotating shaft. A clamp head trigger is fixedly connected to the outer wall of the rotating clamp head.

[0009] Preferably, the front end of the hook is shaped like an inverted V with a smaller front end and a larger rear end, and the end of the hook is shaped like an inverted triangle with a larger front end and a smaller rear end.

[0010] Preferably, a spring is fixedly connected to the side of the fixed collar, and a sliding collar is fixedly connected to the end of the spring away from the fixed collar, and the sliding collar is fixedly connected to the outer cylinder of the pull rod.

[0011] Preferably, two guide sliders are symmetrically arranged at the top of the sliding collar, and the guide sliders are fixedly connected to the sliding collar, and the shape of the guide sliders is set as T-shaped.

[0012] Preferably, the guide slider is externally slidably connected to a guide groove, and the guide groove is formed on the bottom surface of the leakage current detection meter body.

[0013] Preferably, a threaded inner rod is nested inside the outer cylinder of the pull rod, and the threaded inner rod is threadedly connected to the outer cylinder of the pull rod. A pull ring is fixedly connected to the end of the threaded inner rod away from the outer cylinder of the pull rod.

[0014] Preferably, the internal engagement of the limiting slot is connected to a limiting block, and the top of the limiting block is fixedly connected to a linkage rod. The top of the linkage rod is fixedly connected to a support shaft, and the top of the support shaft is rotatably connected to a rotating disc.

[0015] Preferably, the rotating disc has an external sliding connection with an adaptive groove, and the adaptive groove is located at the bottom of the pliers trigger.

[0016] Preferably, the linkage rod is nested inside the body of the leakage current detector, and the linkage rod and the body of the leakage current detector are slidably connected.

[0017] Preferably, a torsion spring is nested outside the rotating shaft, one end of the torsion spring is fixedly connected to the rotating pliers head, and the other end of the torsion spring is fixedly connected to the fixed pliers head.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This utility model provides a monitoring device for the leakage location of power cables. A cable hook component is added to the bottom of the clamp meter. When testing cables in confined spaces, the cable hook component can be used to directly hook the cable outward into the clamp meter for testing. The clamp meter does not need to extend inward to clamp the cable. The clamp meter can be used in relatively open spaces. There is enough space for the hand to operate the clamp meter. The trigger can be easily pressed to control the opening and closing of the clamp head. The position and angle of the clamp meter can be adjusted more conveniently to accurately clamp the cable for measurement. There is no need to pull the cable outward by hand, which improves the safety of operation. Attached Figure Description

[0020] Figure 1 This is a bottom view of the cable hook-out component of this utility model in the pulled-back state.

[0021] Figure 2 This is a bottom view of the cable hook-out component of this utility model in the extended state.

[0022] Figure 3 This is a top-view three-dimensional structural diagram of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the cable outline component of this utility model;

[0024] Figure 5 This is an exploded view of the limiting component of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the clamp-type detection component of this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the hook part of this utility model.

[0027] In the diagram: 1. Leakage current detector body; 2. Cable hook assembly; 3. Limiting assembly; 4. Clamp-type detection assembly; 201. Fixing collar; 202. Pull rod outer cylinder; 203. Hook end; 204. Hook connecting block; 205. Hook front end; 206. Spring; 207. Sliding collar; 208. Guide slider; 209. Threaded inner rod; 210. Pull ring; 211. Cable hook opening; 212. Guide groove; 301. Limiting latch; 302. Limiting block; 303. Linkage rod; 304. Support shaft; 305. Rotating disc; 306. Adaptive groove; 401. Rotating shaft; 402. Rotating clamp head; 403. Clamp head trigger; 404. Fixing clamp head; 405. Torsion spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0030] Example 1

[0031] Please see Figures 1 to 7This utility model discloses a monitoring device for the location of leakage current in a power supply cable, comprising a leakage current detector body 1, a cable hooking assembly 2 installed at the bottom of the leakage current detector body 1, the cable hooking assembly 2 including a fixing collar 201 fixedly connected to the bottom of the leakage current detector body 1, a pull rod outer cylinder 202 penetrating through the inside of the fixing collar 201, and a sliding connection between the pull rod outer cylinder 202 and the fixing collar 201, a hook end 203 fixedly connected to the end of the pull rod outer cylinder 202, and a hook connecting block 204 integrally connected to the side of the hook end 203, and a hook connecting block 204 integrally connected to the end of the hook connecting block 204. The front end 205 of the hook has a hook opening 211 on its inner wall, and the hook opening 211 is semi-circular in shape. The hook opening 211 is used to hook the cable when pulling it outward. The front end 205 of the hook is shaped like an inverted V, with a smaller front end and a larger rear end. The pointed front end 205 of the hook makes it easy to insert into the cable bundle, and the cable on the side can be pushed aside along the slopes on both sides of the front end 205 of the hook. The end 203 of the hook is shaped like an inverted triangle, with a larger front end and a smaller rear end. The smaller end 203 of the hook makes it easier to reduce resistance when pulling the hook outward. A spring 2 is fixedly connected to the side of the fixing collar 201. 06, and a sliding collar 207 is fixedly connected to the end of the spring 206 away from the fixed collar 201, and the sliding collar 207 is fixedly connected to the outer cylinder 202 of the pull rod. The sliding collar 207 and the spring 206 cooperate with each other to use the elastic force of the spring 206 to extend the hook outward. Two guide sliders 208 are symmetrically arranged on the top of the sliding collar 207, and the guide sliders 208 are fixedly connected to the sliding collar 207. The guide sliders 208 are T-shaped, and a guide groove 212 is slidably connected to the outside of the guide sliders 208. The guide groove 212 is opened on the bottom surface of the leakage current detection meter body 1. The guide slider 208 and the guide groove 212 cooperate with each other to guide and limit the movement trajectory of the sliding collar 207, and at the same time limit the direction of the hook to prevent the outer cylinder 202 of the pull rod from rotating arbitrarily, which would cause the hook to tilt. The outer cylinder 202 of the pull rod has a threaded inner rod 209 nested inside, and the threaded inner rod 209 and the outer cylinder 202 of the pull rod are connected by threads. By rotating the threaded inner rod 209, the threaded inner rod 209 can be screwed out to increase the total length of the pull rod, or screwed in to save space and facilitate storage. The end of the threaded inner rod 209 away from the outer cylinder 202 of the pull rod is fixedly connected to a pull ring 210.

[0032] When leakage current testing is required for cables in confined spaces, the testing personnel hold the main body 1 of the leakage current tester in one hand and the pull ring 210 in the other hand to control the cable hooking component 2. When the side of the pull rod outer cylinder 202 loses the engagement restriction of the limit latch 301 and the limit block 302, the end of the pull rod outer cylinder 202 will extend forward under the action of the spring 206, thereby aligning the front end 205 of the hook with the cable to be tested, and sliding the cable into the gap between the front end 205 of the hook and the end 203 of the hook, and locking it at the hook opening 211. At this time, pulling the pull ring 210 backward will cause the cable to be pulled outward through the threaded inner rod 209 and the pull rod outer cylinder 202, which in turn move the front end 205 of the hook. The cable will enter the position between the rotating clamp head 402 and the fixed clamp head 404. The entire cable hooking component 2 can be made of insulated materials to improve safety.

[0033] A limiting component 3 is provided on the side of the fixed collar 201. The limiting component 3 includes a limiting slot 301, which is located on the side of the outer cylinder 202 of the pull rod. A limiting block 302 is engaged inside the limiting slot 301. A linkage rod 303 is fixedly connected to the top of the limiting block 302. A support shaft 304 is fixedly connected to the top of the linkage rod 303. A rotating disc 305 is rotatably connected to the top of the support shaft 304. An adapting groove 306 is slidably connected to the outside of the rotating disc 305. The adapting groove 306 is located at the bottom of the pliers trigger 403. The linkage rod 303 is nested inside the body 1 of the leakage current detector, and the linkage rod 303 and the body 1 of the leakage current detector are slidably connected.

[0034] When the clamp trigger 403 is pinched to open the jaws, the inward rotation of the clamp trigger 403 will push the limit block 302 outward through the linkage rod 303, causing the limit block 302 to disengage from the limit slot 301. At this time, the pull rod outer cylinder 202 is no longer restricted and can be pushed forward. After the cable hooking component 2 hooks the cable between the rotating clamp head 402 and the fixed clamp head 404, the limit slot 301 is just aligned with the limit block 302. When the clamp trigger 403 is released to close the rotating clamp head 402, the clamp trigger 403 will pull the limit block 302 inward through the linkage rod 303, causing the limit block 302 to re-engage into the limit slot 301, thus limiting the pull rod outer cylinder 202 and preventing the hook at its end from pushing the cable out during the testing process.

[0035] A clamp-type detection component 4 is installed at the end of the main body 1 of the leakage current detector. The clamp-type detection component 4 includes a rotating shaft 401, and the rotating shaft 401 is fixedly connected to the main body 1 of the leakage current detector. A rotating clamp head 402 is rotatably connected to one side of the rotating shaft 401, and a fixed clamp head 404 is fixedly connected to the other side of the rotating shaft 401. A clamp head trigger 403 is fixedly connected to the outer wall of the rotating clamp head 402. A torsion spring 405 is nested outside the rotating shaft 401. One end of the torsion spring 405 is fixedly connected to the rotating clamp head 402, and the other end of the torsion spring 405 is fixedly connected to the fixed clamp head 404.

[0036] The main body 1 of the leakage current detector and the clamp-on detection component 4 together form a clamp-on leakage current detector. The clamping jaws of the clamp-on leakage current detector, namely the rotating jaw 402 and the fixed jaw 404, have a magnetic core with a coil wound on it. During the detection process, the rotating jaw 402 and the fixed jaw 404 are wrapped around the conductor to be tested. When current flows through the conductor, a magnetic field is generated around it. According to the law of electromagnetic induction, the changing magnetic field induces an electromotive force in the coil. Under normal circumstances, when there is no leakage current in the circuit being tested, the current in the live wire and the neutral wire is large. When the current is small and equal but opposite in direction, the magnetic fields they produce cancel each other out in the jaws, and the electromotive force induced in the coil is zero. The main body 1 of the leakage current detector shows no leakage. When there is leakage in the circuit, the current in the live wire and the neutral wire is no longer balanced. A part of the current flows to the ground or other unexpected paths through the leakage path. At this time, the magnetic fields in the jaws no longer cancel each other out, and an electromotive force is induced in the coil. This electromotive force is proportional to the magnitude of the leakage current. After the circuit inside the main body 1 of the leakage current detector processes and converts the current, the magnitude of the leakage current can be read on the display screen.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for monitoring the location of leakage current in a power supply cable, characterized in that: The device includes a leakage current detector body (1), and a cable hooking assembly (2) is installed at the bottom of the leakage current detector body (1). The cable hooking assembly (2) includes a fixing collar (201), and the fixing collar (201) is fixedly connected to the bottom of the leakage current detector body (1). A pull rod outer cylinder (202) passes through the inside of the fixing collar (201), and the pull rod outer cylinder (202) and the fixing collar (201) are slidably connected. A hook end (203) is fixedly connected to the end of the pull rod outer cylinder (202), and a hook connecting block (204) is integrally connected to the side of the hook end (203). A hook front end (205) is integrally connected to the end of the hook connecting block (204). A hook hook opening (211) is opened on the inner wall of the hook front end (205), and the shape of the hook hook opening (211) is set as semi-circular. The fixed collar (201) is provided with a limiting component (3) on its side. The limiting component (3) includes a limiting slot (301) and the limiting slot (301) is opened on the side of the pull rod outer cylinder (202). The end of the leakage current detection meter body (1) is equipped with a clamp-shaped detection component (4). The clamp-shaped detection component (4) includes a rotating shaft (401) and the rotating shaft (401) is fixedly connected to the leakage current detection meter body (1). A rotating clamp head (402) is rotatably connected to one side of the rotating shaft (401) and a fixed clamp head (404) is fixedly connected to the other side of the rotating shaft (401). A clamp head trigger (403) is fixedly connected to the outer wall of the rotating clamp head (402).

2. The monitoring device for the leakage location of a power supply cable according to claim 1, characterized in that: The front end (205) of the hook is shaped like an inverted V with a smaller front end and a larger rear end, and the end end (203) of the hook is shaped like an inverted triangle with a larger front end and a smaller rear end.

3. The monitoring device for the leakage location of a power supply cable according to claim 1, characterized in that: A spring (206) is fixedly connected to the side of the fixed collar (201), and a sliding collar (207) is fixedly connected to the end of the spring (206) away from the fixed collar (201), and the sliding collar (207) is fixedly connected to the outer cylinder of the pull rod (202).

4. The monitoring device for the leakage location of a power supply cable according to claim 3, characterized in that: The top of the sliding collar (207) is symmetrically provided with two guide sliders (208), and the guide sliders (208) are fixedly connected to the sliding collar (207), and the shape of the guide sliders (208) is set as T-shaped.

5. The monitoring device for the leakage location of a power supply cable according to claim 4, characterized in that: The guide slider (208) is externally slidably connected to a guide groove (212), and the guide groove (212) is opened on the bottom surface of the leakage current detection meter body (1).

6. The monitoring device for the leakage location of a power supply cable according to claim 1, characterized in that: The outer cylinder (202) of the pull rod has a threaded inner rod (209) nested inside, and the threaded inner rod (209) and the outer cylinder (202) of the pull rod are connected by threads. A pull ring (210) is fixedly connected to the end of the threaded inner rod (209) away from the outer cylinder (202).

7. The monitoring device for the leakage location of a power supply cable according to claim 1, characterized in that: The limiting slot (301) is internally engaged with a limiting block (302), and a linkage rod (303) is fixedly connected to the top of the limiting block (302). A support shaft (304) is fixedly connected to the top of the linkage rod (303), and a rotating disc (305) is rotatably connected to the top of the support shaft (304).

8. The monitoring device for the leakage location of a power supply cable according to claim 7, characterized in that: The rotating disc (305) is externally slidably connected to an adaptive groove (306), and the adaptive groove (306) is located at the bottom of the pliers trigger (403).

9. A monitoring device for the location of leakage in a power supply cable according to claim 7, characterized in that: The linkage rod (303) is nested inside the body (1) of the leakage current detector, and the linkage rod (303) and the body (1) of the leakage current detector are slidably connected.

10. A monitoring device for the location of leakage in a power supply cable according to claim 1, characterized in that: The rotating shaft (401) is externally nested with a torsion spring (405). One end of the torsion spring (405) is fixedly connected to the rotating pliers (402), and the other end of the torsion spring (405) is fixedly connected to the fixed pliers (404).

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