Electric leakage detection device for power cable
By designing a power cable leakage detection device that is adapted to cables of different diameters, using a combined structure of upper and lower detection parts and auxiliary detection parts, efficient and accurate leakage detection before cable laying is achieved, the problem of lack of such equipment in the prior art is solved, and the safe laying of cables is ensured.
Patent Information
- Application Number
- CN202421481452.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The prior art lacks equipment to detect leakage of cables before laying cables, which leads to failure to detect local insulation defects during use due to wear, excessive bends or mis-shearing of cables during use, which affects the safe laying of cables.
A power cable leakage detection device is designed, including an upper detection part, a lower detection part and an auxiliary detection part. Through a liftable support rod and movable groove structure, cables of different diameters are adapted, and the cable surface is leak-detection through conductive pins and conductive soft plates. The display part is used to visually display the detection results.
It realizes efficient and accurate leakage detection of cables before laying, can adapt to cables of different diameters, ensure that the detection parts are in full contact with the cable, improves the accuracy and reliability of detection, promptly detect leakage problems, and ensures the safe laying of cables.
Smart Images
Figure CN223022351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cable detection, in particular to a leakage detection device for power cables. Background Art
[0002] As is known, the cable structure is composed of a conductor located at the core position and an insulating sheath wrapping the conductor. Currently, the insulating sheath is basically made of rubber material or foaming material. However, whether it is rubber material or foaming material, the production of the cable is made by wrapping the heated and softened rubber material or foaming material on the conductor.
[0003] During the use of the cable, wear, excessive bending or mis-shearing of the cable will cause local insulation defects on the cable surface, that is, the problem of damaged and exposed cores. Especially during cable laying, because the cable needs to be transported, carried and dragged, the cable skin is extremely easy to be damaged by friction during these operations, which brings potential safety hazards to the subsequent safe laying of the cable. Nowadays, most of the leakage detection devices for cables are for detecting cables before leaving the factory or after laying, and there is a lack of equipment for detecting cable leakage before laying. Summary of the Utility Model
[0004] In order to overcome the deficiencies in the background art, the utility model discloses a leakage detection device for power cables. When laying the cable, the utility model can not only adapt to the detection needs of cables with different diameters, but also perform efficient and accurate leakage detection and display on the cable.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] A leakage detection device for power cables includes a base. On the upper surface of the base, there is a support rod perpendicular to the base. On one side of the upper part of the support rod body, there is an upper support plate parallel to the base. Below the upper support plate, there is an upper detection piece for detecting leakage on the upper surface of the cable. The upper detection piece includes a mounting block, a conductive plate and conductive needles. The mounting block is fixedly installed on the lower surface of the upper support plate. Inside the mounting block, there is a conductive plate. On the lower surface of the mounting block, there is an inner concave arc surface adapted to the cable. On the inner concave arc surface, there are conductive needles evenly distributed along the inner concave arc surface. One end of the conductive needle penetrates the inner concave arc surface and is electrically connected to the conductive plate. On one side of the lower part of the support rod body, there is a lower support plate parallel to and corresponding to the upper support plate and capable of lifting adjustment. Above the lower support plate, there is a lower detection piece having the same structure as the upper detection piece and arranged in mirror symmetry. Above the upper support plate, there is a display piece electrically connected to the upper detection piece and the lower detection piece and used for leakage display.
[0007] Furthermore, a movable groove is provided along the axial direction of the support rod on one side of the support rod body facing the lower support plate, and a slider slidably matched with the movable groove is provided in the movable groove, and a screw rod is rotatably installed along the axial direction of the movable groove and threadedly penetrates the slider. The lower support plate is fixedly connected to the slider, the upper end of the screw rod penetrates the movable groove, and a turning handle is provided at its end.
[0008] Furthermore, an auxiliary detection component for monitoring leakage on both sides of the cable is provided between the upper detection component and the lower detection component. The auxiliary detection component includes two conductive soft boards that are detachably mounted on both sides of the opposite surfaces of the upper detection component and the lower detection component. Auxiliary conductive needles that contact with both sides of the cable are provided on the opposite surfaces of the two conductive soft boards. Both conductive soft boards are electrically connected to the display component.
[0009] Furthermore, sockets are provided on the opposite surfaces of the upper detection member and the lower detection member at both ends of the concave arc surface, and conductive plugs matching the sockets are provided at both ends of the conductive soft board. The conductive plugs at both ends of the conductive soft board are respectively inserted into the corresponding sockets and electrically connected to the adjacent conductive boards.
[0010] Furthermore, the display element is a warning light or a detection instrument.
[0011] Furthermore, the detection instrument is a voltmeter, an ammeter or a multimeter.
[0012] Furthermore, the conductive plate and the conductive soft plate are both copper plates.
[0013] Furthermore, the conductive needle and the auxiliary conductive needle are both elastic steel wires.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The upper support plate and the liftable lower support plate can adjust the distance between the two detection components, which not only enables the detection components to adapt to the leakage detection requirements of cables with different diameters, but also ensures that the conductive needles in the detection components can fully contact the cables, providing strong support for accurate and efficient leakage detection.
[0016] By setting the concave arc surface and the conductive needle, the conductive needles in the upper detection piece and the lower detection piece can fully and effectively resist the upper and lower surfaces of the cable, providing strong support for the subsequent leakage detection of the cable;
[0017] By setting up auxiliary detection parts, when testing some cables with larger diameters, the conductive needles in the upper and lower detection parts can only contact the upper and lower surfaces of the cables, but cannot contact the surfaces on both sides of the cables. The auxiliary detection parts can be used to fully perform leakage detection on both sides of the cables.
[0018] By setting up a flexible conductive plate, the flexible conductive plate can deform as the distance between the upper detection piece and the lower detection piece changes, thus ensuring full and efficient detection of leakage current on the surface of the cable;
[0019] By setting up conductive needles and auxiliary conductive needles, while being able to cover the surface of the cable, it can also conduct the cable to be measured through local insulation defects on the cable epidermis;
[0020] By setting up a display piece, the staff can intuitively and clearly observe the leakage situation of the cable and determine the leakage location;
[0021] The utility model is mainly applied when laying and towing cables. By the mutual cooperation of the upper and lower detection pieces and the auxiliary detection piece, it can not only meet the detection needs of cables with different diameters, but also efficiently and accurately detect and display the leakage current of the cable. The structure of the utility model is simple, convenient to operate and use, and realizes rapid leakage detection of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is a schematic structural diagram of the utility model;
[0023] Figure 2 is a schematic structural diagram of the upper detection piece of the utility model;
[0024] Figure 3 is a schematic structural diagram of the auxiliary detection piece of the utility model.
[0025] In the figure: 1, turning handle; 2, display piece; 3, upper support plate; 4, upper detection piece; 5, auxiliary detection piece; 6, movable groove; 7, screw rod; 8, lower detection piece; 9, lower support plate; 10, slider; 11, support rod; 12, base; 13, mounting block; 14, conductive plate; 15, concave arc surface; 16, socket; 17, conductive needle; 18, conductive plug; 19, flexible conductive plate; 20, auxiliary conductive needle. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] Next, the technical solutions of the present utility model will be described in conjunction with the drawings in the embodiments of the present utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or positional relationship, they are only corresponding to the drawings of the present utility model for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation.
[0027] Please refer to the attached drawings of the specification Figures 1-3 , the present utility model provides a technical solution:
[0028] Embodiment 1. A power cable leakage detection device includes a base 12. On the upper surface of the base 12, there is a support rod 11 perpendicular to the base 12. On one side of the upper part of the rod body of the support rod 11, there is an upper support plate 3 parallel to the base 12. Below the upper support plate 3, there is an upper detection piece 4 for detecting leakage on the upper surface of the cable. The upper detection piece 4 includes a mounting block 13, a conductive plate 14, and a conductive needle 17. The mounting block 13 is fixedly installed on the lower surface of the upper support plate 3. Inside the mounting block 13, there is a conductive plate 14 made of copper. On the lower surface of the mounting block 13, there is a concave arc surface 15 adapted to the cable. On the concave arc surface 15, there are conductive needles 17 evenly distributed along the concave arc surface 15. One end of the conductive needle 17 penetrates the concave arc surface 15 and is electrically connected to the conductive plate 17. On one side of the lower part of the rod body of the support rod 11, there is a lower support plate 9 parallel to and corresponding to the upper support plate 3 and capable of lifting adjustment. Specifically, on the side of the rod body of the support rod 11 facing the lower support plate 9, there is a movable groove 6 arranged along the axial direction of the support rod 11. Inside the movable groove 6, there are respectively a slider 10 slidably engaged with the movable groove 6, and a screw rod 7 rotatably installed along the axial direction of the movable groove 6 and threadedly penetrating the slider 10. The lower support plate 9 is fixedly connected to the slider 10. The upper end of the screw rod 7 penetrates the movable groove 6, and a turning handle 1 is provided at its end. On the upper part of the lower support plate 9, there is a lower detection piece 8 having the same structure as the upper detection piece 4 and arranged symmetrically in a mirror image. On the upper part of the upper support plate 3, there is a display piece 2 electrically connected to the upper detection piece 4 and the lower detection piece 8 and used for leakage display. The display piece 2 is a warning light or a detection instrument, and the detection instrument is a voltmeter, an ammeter, or a multimeter;
[0029] During laying and traction, the staff can first place the device in front of the cable reel. Connect the end of the cable pulled out to the test power supply, and the other end of the cable wound on the cable reel is grounded through the cable reel to form a loop. When the pulled-out cable passes through the concave arc surface 15 below the upper detection piece 4, the staff rotates the turning handle 1 to drive the lower support plate 9 to move upward, so that the lower detection piece 8 cooperates with the upper detection piece 4. The conductive needles 17 in the lower detection piece 8 and the upper detection piece 4 are in contact with the cable skin. As the cable continues to be conveyed, if the cable skin is damaged and leaks electricity, the conductive needle 17 contacts the current, and the display piece 2 electrically connected to the conductive needle 17 displays. If a warning light is used, it emits a light reminder. If it is a detection instrument, the value on the detection instrument changes. The staff can intuitively and clearly judge the leakage part of the cable through the change of the display piece 2.
[0030] Embodiment 2. When detecting the leakage of some large-diameter cables, the conductive needles 17 in the lower detection member 8 and the upper detection member 4 can only contact the upper and lower surfaces of the cable, and the leakage detection of the two side surfaces of the cable cannot be achieved. In order to ensure the accurate and efficient leakage detection, an auxiliary detection member 5 for monitoring the leakage of the two sides of the cable is further provided between the upper detection member 4 and the lower detection member 8. Specifically, the auxiliary detection member 5 includes two conductive flexible plates 19 detachably installed on both sides of the opposite surfaces of the upper detection member 4 and the lower detection member 8. Sockets 16 are provided at both ends of the inner concave arc surface 15 on the opposite surfaces of the upper detection member 4 and the lower detection member 8. Conductive plugs 18 adapted to the sockets 16 are provided at both ends of the conductive flexible plate 19. The conductive plugs 18 at both ends of the conductive flexible plate 19 are respectively inserted into the corresponding sockets 16 and are electrically connected to the adjacent conductive plates 14. Auxiliary conductive needles 20 in contact with the two sides of the cable are provided on the opposite surfaces of the two conductive flexible plates 19. The two conductive flexible plates 19 are both electrically connected to the display member 2. When the distance between the lower detection member 8 and the upper detection member 4 is adjusted, the conductive flexible plates 19 are deformed adaptively while adhering to the two sides of the cable, and the leakage of the two side surfaces of the cable can be detected by using the conductive flexible plates 19 and the auxiliary conductive needles 20.
[0031] The parts not detailed in the present invention are prior arts. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the above embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention, and any reference signs in the claims should not be regarded as limiting the content of the claims involved.
Claims
1. A power cable leakage detection device, comprising a base (12), characterized in that: The upper surface of the base (12) is provided with a support rod (11) perpendicular to the base (12); an upper support plate (3) parallel to the base (12) is provided on one side of the upper part of the support rod (11); an upper detection member (4) for performing leakage detection on the upper surface of the cable is provided at the lower part of the upper support plate (3); the upper detection member (4) comprises a mounting block (13), a conductive plate (14) and a conductive needle (17); the mounting block (13) is fixedly mounted on the lower surface of the upper support plate (3); the conductive plate (14) is provided inside the mounting block (13); and the lower surface of the mounting block (13) is provided with an inner concave arc surface (15) adapted to the cable. The inner concave arc surface (15) is provided with conductive needles (17) evenly distributed along the inner concave arc surface (15), one end of the conductive needle (17) penetrates the inner concave arc surface (15) and is electrically connected to the conductive plate (17), a lower support plate (9) is provided on one side of the lower part of the support rod (11) and is parallel to and corresponds to the upper support plate (3) and can be adjusted up and down, a lower detection member (8) having the same structure as the upper detection member (4) and arranged in mirror symmetry is provided on the upper part of the lower support plate (9), and a display member (2) electrically connected to the upper detection member (4) and the lower detection member (8) and used for displaying leakage is provided on the upper part of the upper support plate (3).
2. A power cable leakage detection device according to claim 1, characterized in that: A movable groove (6) arranged along the axial direction of the support rod (11) is provided on one side of the rod body of the support rod (11) facing the lower support plate (9), a slider (10) slidably matched with the movable groove (6) is provided in the movable groove (6), and a screw rod (7) arranged along the axial direction of the movable groove (6) and threadedly penetrating the slider (10) is rotatably installed, the lower support plate (9) is fixedly connected to the slider (10), the upper end of the screw rod (7) penetrates the movable groove (6), and a rotating handle (1) is provided at the end thereof.
3. A power cable leakage detection device according to claim 1, characterized in that: An auxiliary detection component (5) for monitoring leakage on both sides of the cable is also provided between the upper detection component (4) and the lower detection component (8). The auxiliary detection component (5) comprises two conductive soft boards (19) detachably mounted on both sides of the opposite surfaces of the upper detection component (4) and the lower detection component (8). Auxiliary conductive pins (20) that contact with both sides of the cable are provided on the opposite surfaces of the two conductive soft boards (19). The two conductive soft boards (19) are electrically connected to the display component (2).
4. A power cable leakage detection device according to claim 3, characterized in that: Sockets (16) located at both ends of the inner concave arc surface (15) are provided on the opposing surfaces of the upper detection member (4) and the lower detection member (8), and conductive plugs (18) matching the sockets (16) are provided at both ends of the conductive soft board (19). The conductive plugs (18) at both ends of the conductive soft board (19) are respectively inserted into the corresponding sockets (16) and are electrically connected to the adjacent conductive board (14).
5. A power cable leakage detection device according to claim 1, characterized in that: The display element (2) is a warning light or a detection instrument.
6. A power cable leakage detection device according to claim 5, characterized in that: The testing instrument is a voltmeter, an ammeter or a multimeter.
7. A power cable leakage detection device according to claim 3, characterized in that: The conductive plate (14) and the conductive soft plate (19) are both copper plates.
8. A power cable leakage detection device according to claim 3, characterized in that: The conductive needle (17) and the auxiliary conductive needle (20) are both elastic steel wires.