An electric leakage detection device

Abstract

The utility model provides a kind of electric leakage detection device, including fixed box and the clamping mechanism being arranged with its top end, the clamping mechanism includes first arc plate, second arc plate and adjusting frame, the top end of the fixed box is symmetrically fixed with fixed block on both sides. By knob, screw rod can be adjusted to adjusting frame drop, adjusting frame can extrude first arc plate, second arc plate, so that first arc plate, second arc plate can rotate relatively, it is convenient to clamp and fix outside cable, it is convenient to continuously carry out electric leakage detection to cable, it is not necessary to repeatedly carry out electric leakage detection to cable, the practicability of the detection device can be improved;Electromagnet energization can magnetically attract iron plate to move upwards, iron plate moves and is connected with contact by insulating rod and is communicated between two sides electrode sheet, to be powered for warning light by rechargeable lithium battery, it is convenient to remind maintenance personnel cable electric leakage by warning light.

Description

Technical Field

[0001] This utility model relates to the field of leakage current detection technology, specifically to a leakage current detection device. Background Technology

[0002] Prolonged use of electrical circuits can cause insulation aging, moisture absorption, or wear, leading to leakage current. Therefore, a leakage current detection device is needed to check for leakage current in the circuit before electrical maintenance.

[0003] Chinese utility model patent CN220419532U discloses an electrical maintenance leakage current detection device, comprising a connecting shell and a battery. The battery is fixedly connected to the inner side of the connecting shell. A connecting rod is fixedly connected to one end of the connecting shell, an alarm is fixedly connected to one end of the connecting rod, a connecting cylinder is fixedly connected to one end of the connecting rod, a conductive plate is fixedly connected to one end of the connecting cylinder, a length adjustment mechanism is fixedly connected to one end of the length adjustment mechanism, and a probe is fixedly connected to one end of the length adjustment mechanism. The device utilizes an alarm, limit switch, baffle, and spring. When a magnetic pointer rotates, the alarm flashes and sounds an alarm, serving as a reminder to workers. However, this detection device can only be used during testing and cannot be fixed to cables, requiring repeated leakage current detection operations, thus reducing its practicality.

[0004] Therefore, this utility model provides a leakage current detection device. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a leakage current detection device to solve the problems mentioned in the background. This invention allows for the adjustment of the lowering of the adjustment frame via a knob and screw. The adjustment frame can compress the first and second arc-shaped plates, enabling them to rotate relative to each other. This facilitates clamping and fixing the plate to the outside of the cable, allowing for continuous leakage current detection without the need for repeated detection, thus improving the practicality of the detection device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leakage current detection device includes a fixed box and a clamping mechanism at its top. The clamping mechanism includes a first arc-shaped plate, a second arc-shaped plate, and an adjusting frame. Fixed blocks are symmetrically fixed on both sides of the top of the fixed box. The bottom ends of the first and second arc-shaped plates are movably mounted between the fixed blocks on both sides via a torsion spring shaft. The adjusting frame is "E"-shaped, with its middle end slidably mounted inside the top of the fixed box. An arc-shaped second conductive plate is fixedly mounted at the top of the adjusting frame. A fixing rod is fixedly mounted at the center of the bottom of the fixed box. A screw is rotatably mounted inside the fixed box and the fixing rod. A splicing rod is screwed to the bottom of the fixing rod via an external thread. A cable is clamped between the adjusting frame, the first arc-shaped plate, and the second arc-shaped plate.

[0007] Furthermore, a first conductive plate is fixedly installed on the concave inner wall of both the first and second arc-shaped plates, and the first and second arc-shaped plates are symmetrically arranged on both sides of the adjustment frame.

[0008] Furthermore, a screw hole is provided inside the middle end of the adjustment frame, and the top end of the screw is screwed into the screw hole. The other two ends of the adjustment frame are located above the bottom ends of the first arc plate and the second arc plate.

[0009] Furthermore, a detection mechanism is provided inside one end of the fixed box via a mounting slot, and a rechargeable lithium battery is fixedly installed inside the other end of the fixed box. The detection mechanism includes electrode plates, connecting metal plates, iron plates, and electromagnets. The mounting slot is opened inside one end of the fixed box, and the electrode plates are symmetrically fixed inside the inner walls on both sides of the bottom end of the mounting slot.

[0010] Furthermore, the connecting metal sheet and the iron plate are respectively limited and slidably disposed at the bottom and top of the inner side of the mounting groove, the connecting metal sheet and the iron plate are respectively disposed below and above the electrode sheet, and metal contacts are fixedly disposed at the top of both ends of the connecting metal sheet corresponding to the bottom of the electrode sheet.

[0011] Furthermore, an insulating rod is fixedly installed between the iron plate and the connecting metal sheet, and a spring is fixedly installed on the outer side of the upper end of the insulating rod corresponding to the inner wall of the mounting groove. The electromagnet is fixedly installed on the top wall of the mounting groove above the iron plate.

[0012] Furthermore, warning lights are symmetrically fixed on both sides of the top of the fixing rod. The warning lights are electrically connected to the electrode plate on one side via wires, and the electrode plate on the other side is electrically connected to the rechargeable lithium battery. The first conductive plate and the second conductive plate are electrically connected to the electromagnet via wires.

[0013] Furthermore, the external thread is provided on the outer side of the bottom end of the fixing rod and the splicing rod, and the top end of the splicing rod is provided with a threaded groove. The bottom end of the fixing rod is screwed into the inside of the threaded groove through the external thread. A knob is fixedly provided on the outer side of the bottom end of the external thread corresponding to the bottom end of the fixing rod. The knob is provided inside the threaded groove.

[0014] The beneficial effects of this utility model are as follows: The leakage current detection device of this utility model allows for the downward adjustment of the adjusting frame via a knob and screw. The adjusting frame can compress the first and second arc-shaped plates, enabling them to rotate relative to each other. This facilitates clamping and fixing the plates to the outside of the cable, allowing for continuous leakage current detection without the need for repeated testing, thus improving the practicality of the device. The first and second conductive plates can contact the cable and connect it to the electromagnet. When the electromagnet is energized, it magnetically attracts the iron plate upwards. The iron plate, through an insulating rod, moves the connecting metal plate and contacts, connecting them to the electrode plates on both sides. This allows a rechargeable lithium battery to power the warning light, conveniently alerting maintenance personnel to cable leakage. The splicing rod can be spliced ​​using external threads and threaded grooves, increasing the length of the detection device and facilitating direct leakage current detection of the cable. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a leakage current detection device according to the present invention;

[0016] Figure 2 This is a front cross-sectional view of a leakage current detection device according to the present invention;

[0017] Figure 3 This is a cross-sectional view of the top adjustment state of a leakage current detection device according to this utility model;

[0018] Figure 4 This utility model relates to a leakage current detection device. Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a structural diagram of the top adjustment state of a leakage current detection device according to the present invention;

[0020] Figure 6 This is a cross-sectional view of the top adjustment state of a leakage current detection device according to this utility model;

[0021] In the diagram: 1. Fixed box; 2. Fixed rod; 3. Adjusting frame; 4. First arc plate; 5. Second arc plate; 6. Warning light; 7. External thread; 8. Knob; 9. Splicing rod; 10. Threaded groove; 11. Screw; 12. Detection mechanism; 13. Rechargeable lithium battery; 14. Cable; 15. First conductive plate; 16. Second conductive plate; 17. Electrode plate; 18. Connecting metal plate; 19. Insulating rod; 20. Iron plate; 21. Electromagnet; 22. Fixed block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 6 This utility model provides a technical solution: a leakage current detection device, including a fixed box 1 and a clamping mechanism at its top. The clamping mechanism includes a first arc-shaped plate 4, a second arc-shaped plate 5, and an adjusting frame 3. Fixing blocks 22 are symmetrically fixed on both sides of the top of the fixed box 1. The bottom ends of the first arc-shaped plate 4 and the second arc-shaped plate 5 are movably mounted between the fixing blocks 22 on both sides via a torsion spring pivot. The adjusting frame 3 is E-shaped, and its middle end is slidably mounted inside the top of the fixed box 1. An arc-shaped second arc-shaped plate is fixedly mounted at the top of the adjusting frame 3. The conductive plate 16 has a fixed rod 2 fixedly installed at the center of the bottom end of the fixed box 1. The fixed box 1 and the fixed rod 2 are internally limited and rotatably installed with screws 7. The bottom end of the fixed rod 2 is screwed with a splicing rod 9 through external threads 7. The cable 14 is held between the adjusting frame 3, the first arc plate 4 and the second arc plate 5. By rotating and adjusting the first arc plate 4 and the second arc plate 5, the device can be fixed on the cable 14, which facilitates continuous leakage detection of the cable 14 without having to repeatedly perform leakage detection on the cable 14, thus improving the practicality of the detection device.

[0024] In this embodiment, a first conductive plate 15 is fixedly disposed on the concave inner wall of the first arc plate 4 and the second arc plate 5. The first arc plate 4 and the second arc plate 5 are symmetrically disposed on both sides of the adjusting frame 3. A screw hole is opened in the middle end of the adjusting frame 3. The top end of the screw 7 is screwed into the screw hole. The other two ends of the adjusting frame 3 are disposed above the bottom ends of the first arc plate 4 and the second arc plate 5. By rotating the screw 7, the screw 7 drives the adjusting frame 3 to move downward, which can squeeze the first arc plate 4 and the second arc plate 5, so that the first arc plate 4 and the second arc plate 5 rotate in opposite directions. This makes it convenient to clamp the first arc plate 4 and the second arc plate 5 on the outside of the cable 14, making it convenient to fix the device on the cable 14 and to facilitate subsequent leakage detection of the cable 14.

[0025] In this embodiment, a detection mechanism 12 is installed inside one end of the fixed box 1 via a mounting slot, and a rechargeable lithium battery 13 is fixedly installed inside the other end of the fixed box 1. The detection mechanism 12 includes an electrode plate 17, a connecting metal plate 18, an iron plate 20, and an electromagnet 21. The mounting slot is opened inside one end of the fixed box 1. The electrode plates 17 are symmetrically fixed inside the inner walls on both sides of the bottom end of the mounting slot. The connecting metal plate 18 and the iron plate 20 are respectively limited and slidably installed at the bottom and top of the inner side of the mounting slot. The connecting metal plate 18 and the iron plate 20 are respectively located below and above the electrode plate 17. Metal contacts are fixedly installed at the top of both ends of the connecting metal plate 18 corresponding to the bottom of the electrode plate 17. An insulating rod 19 is fixedly installed between the iron plate 20 and the connecting metal plate 18. A spring is fixedly installed on the outer side of the upper end of the insulating rod 19 corresponding to the inner wall of the mounting slot between the iron plate 20 and the mounting slot. The electromagnet 21 is fixedly installed above the iron plate 20 corresponding to the mounting slot. On the inner top wall, warning lights 6 are symmetrically fixed on both sides of the top of the fixed rod 2. The warning lights 6 are electrically connected to the electrode plate 17 on one side through wires, and the electrode plate 17 on the other side is electrically connected to the rechargeable lithium battery 13. The first conductive plate 15 and the second conductive plate 16 are electrically connected to the electromagnet 21 through wires. The first conductive plate 15 and the second conductive plate 16 are in contact with the cable 14. The leakage current passes through the first conductive plate 15 and the second conductive plate 16 to power the electromagnet 21, so that the electromagnet 21 works and magnetically attracts the iron plate 20 to slide upward. The iron plate 20 drives the connecting metal plate 18 to move upward through the insulating rod 19. The connecting metal plate 18 drives the contacts to contact the electrode plates 17 on both sides, which facilitates the connection between the rechargeable lithium battery 13 and the warning lights 6, and facilitates the warning of the inspection personnel through the warning lights 6. The spring can reset the iron plate 20 and the connecting metal plate 18, and the connecting metal plate 18 separates from the electrode plate 17, and the warning lights 6 stop warning.

[0026] In this embodiment, the external thread 7 is located on the outer side of the bottom end of the fixing rod 2 and the splicing rod 9. The top end of the splicing rod 9 has a threaded groove 10. The bottom end of the fixing rod 2 is screwed into the threaded groove 10 through the external thread 7. A knob 8 is fixedly provided on the outer side of the bottom end of the fixing rod 2 corresponding to the bottom end of the external thread 7. The knob 8 is located inside the threaded groove 10. The screwing of the external thread 7 into the threaded groove 10 facilitates the splicing of the splicing rod 9, which can increase the length of the detection device. The threaded groove 10 can also increase the protection of the knob 8 and prevent accidental operation of the knob 8.

[0027] When using this leakage current detection device, firstly, the adjusting frame 3 is slid towards the top of the fixed box 1 by turning knob 8 and screw 7. The first arc plate 4 and the second arc plate 5 open to both sides under the action of the torsion spring shaft, which exerts torque. Then, the knob 8 is turned in the opposite direction, causing the screw 7 to rotate inside the fixed rod 2 and the fixed box 1. Through the screw connection between the screw 7 and the screw hole, the adjusting frame 3 slides downward along the fixed box 1. At the same time, the outer ends of the adjusting frame 3 can contact and press against the bottom ends of the first arc plate 4 and the second arc plate 5, causing... The first arc-shaped plate 4 and the second arc-shaped plate 5 drive the first conductive plate 15 to rotate relative to each other. Holding the fixing rod 2, the device contacts the bottom of the cable 14 via the second conductive plate 16. As the first arc-shaped plate 4 and the second arc-shaped plate 5 rotate, they can be clamped onto the outside of the cable 14. Both the first conductive plate 15 and the second conductive plate 16 are in contact with the surface of the cable 14, facilitating the clamping and fixing of the device to the outside of the cable 14. This allows for continuous leakage current detection of the cable 14 without the need for repeated operation of the detection device, thus improving the efficiency of the detection device. The practicality of the device: After the first conductive plate 15 and the second conductive plate 16 come into contact with the cable 14, when there is a leakage, the leakage current can be transmitted to the electromagnet 21 through the wire. After the electromagnet 21 is energized, it can magnetically attract the iron plate 20 to move upward. The iron plate 20 moves the connecting metal piece 18 and the contact point through the insulating rod 19 and connects with the electrode pieces 17 on both sides, thereby connecting the rechargeable lithium battery 13 to the warning light 6 through the electrode pieces 17 and the connecting metal piece 18, and powering the warning light 6, so that the warning light 6 can easily remind maintenance personnel that the cable 14 is leaking current; To adjust the length of the device, the splicing rod 9 is fixedly installed at the bottom of the fixing rod 2 by the screw connection between the external thread 7 and the threaded groove 10. According to the height of the cable 14 to be tested, it can be spliced ​​at the bottom of the splicing rod 9. Except for the electrode plate 17, the connecting metal plate 18, and the iron plate 20, which are made of metal, all other parts are made of insulating materials. Holding the splicing rod 9, the second conductive plate 16 is brought into contact with the cable 14, which facilitates direct leakage detection of the cable 14 without clamping. The length adjustment function and the clamping function of the device can be used separately.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leakage current detection device, comprising a fixed box (1) and a clamping mechanism disposed at its top, characterized in that, The clamping mechanism includes a first arc plate (4), a second arc plate (5), and an adjusting frame (3). Fixing blocks (22) are symmetrically fixed on both sides of the top of the fixed box (1). The bottom ends of the first arc plate (4) and the second arc plate (5) are movably installed between the fixing blocks (22) on both sides through a torsion spring shaft. The adjusting frame (3) is "E" shaped. The middle end of the adjusting frame (3) is limited and slidably installed inside the top of the fixed box (1). An arc-shaped second conductive plate (16) is fixedly installed at the top of the adjusting frame (3). A fixing rod (2) is fixedly installed at the center of the bottom end of the fixed box (1). A screw (7) is limited and rotatably installed inside the fixed box (1) and the fixing rod (2). A splicing rod (9) is screwed to the bottom end of the fixing rod (2) through an external thread (11). A cable (14) is clamped between the adjusting frame (3), the first arc plate (4), and the second arc plate (5).

2. The leakage current detection device according to claim 1, characterized in that: A first conductive plate (15) is fixedly installed on the concave inner wall of the first arc plate (4) and the second arc plate (5). The first arc plate (4) and the second arc plate (5) are symmetrically arranged on both sides of the adjustment frame (3).

3. The leakage current detection device according to claim 2, characterized in that: The middle end of the adjustment frame (3) has a screw hole, and the top end of the screw (7) is screwed into the screw hole. The other two ends of the adjustment frame (3) are located above the bottom ends of the first arc plate (4) and the second arc plate (5).

4. The leakage current detection device according to claim 2, characterized in that: The inside of one end of the fixed box (1) is provided with a detection mechanism (12) through the mounting groove. The inside of the other end of the fixed box (1) is fixedly installed with a rechargeable lithium battery (13). The detection mechanism (12) includes an electrode plate (17), a connecting metal plate (18), an iron plate (20) and an electromagnet (21). The mounting groove is opened inside one end of the fixed box (1). The electrode plate (17) is symmetrically fixed inside the inner walls on both sides of the bottom end of the mounting groove.

5. A leakage current detection device according to claim 4, characterized in that: The connecting metal sheet (18) and the iron plate (20) are respectively limited and slidably disposed at the bottom and top of the inner side of the mounting groove. The connecting metal sheet (18) and the iron plate (20) are respectively disposed below and above the electrode sheet (17). Metal contacts are fixedly disposed at the top of both ends of the connecting metal sheet (18) corresponding to the bottom of the electrode sheet (17).

6. A leakage current detection device according to claim 5, characterized in that: An insulating rod (19) is fixedly installed between the iron plate (20) and the connecting metal sheet (18). A spring is fixedly installed between the outer side of the upper end of the insulating rod (19) and the inner wall of the mounting groove. The electromagnet (21) is fixedly installed on the top wall of the mounting groove above the iron plate (20).

7. A leakage current detection device according to claim 6, characterized in that: Warning lights (6) are symmetrically fixed on both sides of the top of the fixed rod (2). The warning lights (6) are electrically connected to the electrode plate (17) on one side through wires. The electrode plate (17) on the other side is electrically connected to the rechargeable lithium battery (13). The first conductive plate (15) and the second conductive plate (16) are electrically connected to the electromagnet (21) through wires.

8. A leakage current detection device according to claim 1, characterized in that: The external thread (11) is located on the outside of the bottom end of the fixed rod (2) and the splicing rod (9). The top end of the splicing rod (9) is provided with a threaded groove (10). The bottom end of the fixed rod (2) is screwed into the inside of the threaded groove (10) by the external thread (11). A knob (8) is fixedly provided on the outside of the bottom end of the external thread (11) corresponding to the bottom end of the fixed rod (2). The knob (8) is located inside the threaded groove (10).

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