Power cable fault detection device
By designing a cable fault detection device containing elastic conductive sheets and arc-shaped plates, the existing detection methods are solved for inconvenient operation and safety hazards, and efficient and accurate detection of cables of different diameters is achieved.
Patent Information
- Application Number
- CN202411981905.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-03-21
AI Technical Summary
The existing cable fault detection methods have inconveniences and safety hazards such as time-consuming and labor-intensive operation, power outage, and long-term operation of staff handheld test heads.
A power cable fault detection device is designed, using a detection chamber composed of elastic conductive sheet and arc-shaped plate, and the tight attachment and detection of cables of different diameters are achieved through elastic telescopic rods and insulated pull ropes.
The device can detect cables conveniently and efficiently, reduce the difficulty of operating for staff, avoid power outages affecting the operation of power equipment, and improve the accuracy and safety of detection.
Smart Images
Figure CN119667414A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cable detection, and in particular to a power cable fault detection device. Background Art
[0002] Insulation testing of power circuits refers to the testing and evaluation of the insulation performance of various equipment and lines in the power system to ensure that electrical equipment will not cause dangers such as short circuits, leakage or electrical fires due to insulation failures during operation. This process is crucial to ensuring the safety, stability and reliability of the power system. Among them, power cables are common transmission equipment in power systems, so cable fault detection is very important.
[0003] Most cable failures are caused by surface damage and leakage that is not repaired in time. Long-term use of leakage leads to cable breakdown. Therefore, cable fault detection requires leakage detection first. However, at present, leakage detection of cables is usually performed by staff using manual handheld detection instruments. This detection method still has the following shortcomings in actual operation: 1. When testing some installed cables, workers are often required to climb up and test them, which is time-consuming and laborious, and brings great inconvenience to the leakage detection of cables; 2. In order to ensure the safety and accuracy of leakage detection, insulation detection is usually required to be carried out under power-off conditions. This means that when performing daily inspections on power supply cables, the power equipment also needs to be powered off, which seriously affects the normal operation of the power circuit equipment. 3. When conducting leakage detection on the cable surface, the detection probe of the detection equipment needs to be attached to the cable surface at all times. Most of the existing handheld detection equipment requires manual hand-held probes for interference detection, which requires the staff to hold the detection head for interference detection, which brings great workload to the staff; Therefore, there is an urgent need for a power cable fault detection device that can overcome the above-mentioned shortcomings. Summary of the invention
[0004] In order to overcome the shortcomings of the background technology, the present invention discloses a power cable fault detection device. The present invention can effectively and tightly attach cables of different diameters by sleeved with elastic conductive sheets on the installed cables, thereby greatly facilitating the subsequent leakage detection of the installed cables.
[0005] To achieve the above object, the present invention adopts the following technical solution: A power cable fault detection device comprises a rectangular frame, an opening is provided at the lower part of the rectangular frame, an arc-shaped recess is provided on the top surface of the inner cavity of the rectangular frame, arc-shaped plates that can be rotated toward or away from each other are hinged at both ends of the arc-shaped recess, the inner concave arc surfaces of the arc-shaped plates at both ends of the arc-shaped recess are arranged opposite to each other, the arc-shaped recess cooperates with the two arc-shaped plates to form a detection cavity, an opening corresponding to the opening is formed at the lower part of the detection cavity, an elastic conductive sheet that is arranged along the inner wall of the detection cavity and interferes with the inner wall of the detection cavity is provided in the detection side cavity, elastic telescopic rods that are connected to the movable ends of the adjacent arc-shaped plates and are used to push the two arc-shaped plates to move toward each other are provided on both side walls of the inner cavity of the rectangular frame, the elastic conductive sheet contacts the cable surface through the movement of the arc-shaped plates toward each other, an insulating rod for supporting the rectangular frame is provided on one side of the opening of the rectangular frame, and an indicator light connected to the circuit of the elastic conductive sheet is provided on the rod body of the insulating rod.
[0006] Furthermore, the inner surface of the arc-shaped recess is provided with an arc-shaped slot A which is arranged along its circumference and has open structures at both ends. The opposite surfaces of the two arc-shaped plates are provided with arc-shaped slots B which are arranged along their circumference and have open structures at both ends. The elastic conductive sheet is clamped in the arc-shaped slots A and B.
[0007] Furthermore, the length of the elastic conductive sheet is greater than the circumference of the detection cavity.
[0008] Furthermore, the movable end of the arc plate that contacts one end of the elastic conductive sheet is fixedly connected, and the other end of the elastic conductive sheet is fixedly connected with an insulating pull rope for pulling the elastic conductive sheet and shrinking its diameter to attach it to the surface of the cable.
[0009] Furthermore, a plurality of cable clips for limiting the position of the insulating pull rope are arranged at intervals on the insulating rod body.
[0010] Furthermore, a winding drum for winding up the insulating pull rope is provided at the end of the insulating rod body.
[0011] Furthermore, the insulating rod is hingedly connected to the rectangular frame.
[0012] Furthermore, the movable ends of the two arc-shaped plates are provided with extension plates extending downward, one end of the elastic telescopic rod is connected to the inner wall of the rectangular frame, and the other end of the elastic telescopic rod is connected to the extension plate.
[0013] Furthermore, the lower ends of the two extension plates are each provided with an inclined plate with the end portion inclined toward the inner side wall of the adjacent rectangular frame, and the two inclined plates cooperate to form an expanded diameter opening.
[0014] Furthermore, the elastic telescopic rod comprises a telescopic rod, a spring is sleeved on the telescopic rod, one end of the telescopic rod is fixedly connected to the inner wall of the rectangular frame, and the other end of the telescopic rod is hingedly connected to the extension plate.
[0015] Compared with the prior art, the invention has the following beneficial effects: through the detection cavity composed of the arc-shaped notch and the two arc-shaped plates, when the installed cable is detected, it can be conveniently and efficiently snapped on the surface of the cable, providing convenience for subsequent detection; By arranging an elastic conductive sheet and an indicator light in the detection cavity, the limit of the detection cavity can be used to enable the elastic conductive sheet to be effectively sleeved on the cable surface, and the indicator light can be used to give a warning, providing strong support for subsequent detection; By setting an elastic telescopic rod, the arc plate can be elastically supported, so that the two arc plates can be adaptively adjusted according to the diameter of the cable, so that the arc plate and the elastic conductive sheet can be closely attached to the surface of the cable, providing a strong guarantee for the accuracy and efficiency of subsequent leakage detection; By setting an insulating pull rope, when the curvature of the arc plate and the arc notch does not match the curvature of the cable, the insulating pull rope is used to pull the elastic conductive sheet so that the elastic conductive sheet can be separated from the inner wall of the detection cavity, so that it can be tightly and effectively sheathed on the surface of the cable, providing a strong guarantee for subsequent leakage detection; By setting up an insulating rod with hinged connection, it is convenient for the staff to rotate and adjust the rectangular frame on the ground, so that the elastic conductive sheet can rotate along the circumference of the cable, realizing comprehensive and efficient detection of the cable surface; By setting an extension plate or an inclined plate, not only the range of motion of the arc plate is effectively increased, so that the detection cavity can adapt to the detection of cables of various diameters, but also the subsequent installation of the cable can be facilitated; The present invention can effectively and tightly attach cables of different diameters by sleeve-mounting elastic conductive sheets on the installed cables, which greatly facilitates subsequent leakage detection of the installed cables, greatly reduces the operating difficulty of the staff, and greatly ensures the power supply safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the rectangular frame structure of the present invention; Figure 3 It is a schematic diagram of the curved plate structure of the present invention.
[0017] In the figure: 1. rectangular frame; 2. elastic conductive sheet; 3. arc-shaped plate; 4. detection cavity; 5. elastic telescopic rod; 6. open mouth; 7. expanded diameter mouth; 8. insulating pull rope; 9. insulating rod; 10. cable tie; 11. reel; 12. indicator light; 13. arc-shaped slot A; 14. arc-shaped notch; 15. opening; 16. arc-shaped slot B; 17. extension plate; 18. inclined plate. DETAILED DESCRIPTION
[0018] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.
[0019] Please refer to the instruction manual Figure 1-3 , the present invention provides a technical solution: Embodiment 1, a power cable fault detection device, including a rectangular frame 1, an opening 15 is provided at the lower part of the rectangular frame 1, an arc-shaped recess 14 is provided on the top surface of the inner cavity of the rectangular frame 1, and arc-shaped plates 3 that can be rotated and adjusted toward or away from each other are hinged at both ends of the arc-shaped recess 14. The concave arc surfaces of the arc-shaped plates 3 at both ends of the arc-shaped recess 14 are arranged opposite to each other, and the arc-shaped recess 14 cooperates with the two arc-shaped plates 3 to form a detection cavity 4, and an open opening 6 corresponding to the opening 15 is formed at the lower part of the detection cavity 4. An elastic conductive sheet 2 is provided in the detection cavity 4, which is arranged along the inner wall of the detection cavity 4 and is interference-fitted with the inner wall of the detection cavity 4. In order to ensure that the elastic conductive sheet 2 can be effectively laid along the inner wall of the detection cavity 4, the inner surface of the arc-shaped recess 14 is An arc-shaped card slot A13 is provided along its circumference and has an open structure at both ends. The opposite surfaces of the two arc-shaped plates 3 are provided with arc-shaped card slots B16 which are provided along its circumference and have an open structure at both ends. The elastic conductive sheet 2 is clamped in the arc-shaped card slot A13 and the arc-shaped card slot B16. Both side walls of the inner cavity of the rectangular frame 1 are provided with elastic telescopic rods 5 which are connected to the movable ends of the adjacent arc-shaped plates 3 and are used to push the two arc-shaped plates 3 to move toward each other. The elastic conductive sheet 2 contacts the surface of the cable through the movement of the arc-shaped plates 3 toward each other. An insulating rod 9 for supporting the rectangular frame 1 is provided on one side of the opening 15 of the rectangular frame 1. An indicator light 12 which is connected to the circuit of the elastic conductive sheet 2 is provided on the rod body of the insulating rod 9. When performing cable fault detection, the staff lifts the rectangular frame 1 through the insulating rod 9, and after the opening 15 of the rectangular frame 1 corresponds to the upper part of the cable, the rectangular frame 1 is moved downward, so that the cable enters the detection cavity 4 through the opening 15 and the open mouth 6. As the cable enters the detection cavity 4, the two arc plates 3 are elastically supported by the elastic telescopic rod 5, so that the two arc plates 3 can be attached to the surface of the cable, and the upper part of the cable is attached to the arc-shaped recess 14, and the elastic conductive sheet 2 is fully attached to the surface of the cable. The staff holds the insulating rod 9 to drive the rectangular frame 1 to move along the cable, and the cable can be detected through the elastic conductive sheet 2. When the cable is damaged and leaks electricity, the elastic conductive sheet 2 will transfer the received electricity to the indicator light 12. If the indicator light 12 flashes or lights up, it means that the surface of the cable is damaged.
[0020] Embodiment 2: During the detection of the cable, if the diameter of the cable is too large or too small, resulting in the arc surface of the arc plate 3 and the arc recess 14 not matching the cable surface, the elastic conductive sheet 2 will not be able to fully adhere to the cable surface, affecting the subsequent detection accuracy. To this end, the length of the elastic conductive sheet 2 is greater than the circumference of the detection cavity 4, the movable end of the arc plate 3 that is in contact with one end of the elastic conductive sheet 2 is fixedly connected, and the other end of the elastic conductive sheet 2 is fixedly connected with an insulating pull rope 8 for pulling the elastic conductive sheet 2 and shrinking it to adhere to the cable surface; When the cable is placed in the detection cavity 4, the elastic conductive sheet 2 must be set around the cable. At this time, the staff pulls one end of the elastic conductive sheet 2 through the insulation pull 8, and the elastic conductive sheet 2 will be separated from the arc groove A13 and the arc groove B16, and fully and effectively adhere to the cable surface, thereby ensuring the accuracy and efficiency of subsequent cable detection.
[0021] Embodiment three, in order to facilitate the storage and arrangement of the insulating pull rope 8, a plurality of wire clips 10 for limiting the insulating pull rope 8 are provided at intervals on the rod body of the insulating rod 9, and a winding drum 11 for winding up the insulating pull rope 8 is provided at the end of the rod body of the insulating rod 9. The staff can apply pulling force to the insulating pull rope 8 through the winding drum 11.
[0022] In the fourth embodiment, since there is an opening 6 at the bottom of the detection cavity 4, the elastic conductive sheet 2 cannot detect the cable surface corresponding to the opening 6. In order to realize a comprehensive detection of the cable surface, the insulating rod 9 is hingedly connected to the rectangular frame 1. The staff can push the insulating rod 9 to make the rectangular frame 1 and the detection cavity 4 rotate around the cable, so that the elastic conductive sheet 2 can perform a comprehensive detection of the cable surface.
[0023] Embodiment 5, in order to increase the movable range of the two arc plates 3, so that the detection cavity 4 can meet the detection requirements of cables of different diameters, the movable ends of the two arc plates 3 are provided with an extension plate 17 extending downward, and the elastic telescopic rod 5 includes a telescopic rod, on which a spring is sleeved, one end of the telescopic rod is fixedly connected to the inner wall of the rectangular frame 1, and the other end of the telescopic rod is hingedly connected to the extension plate 17.
[0024] Embodiment 6: To facilitate the cable to enter the detection cavity 4 quickly and efficiently, the lower ends of the two extension plates 17 are provided with inclined plates 18 with their ends inclined toward the inner wall of the adjacent rectangular frame 1, and the two inclined plates 18 cooperate to form the expanded diameter opening 7.
[0025] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.
Claims
1. A power cable fault detection device, comprising a rectangular frame (1), characterized in that: An opening (15) is provided at the bottom of the rectangular frame (1), an arc-shaped recess (14) is provided on the top surface of the inner cavity of the rectangular frame (1), arc-shaped plates (3) that can be rotated toward or away from each other are hingedly connected at both ends of the arc-shaped recess (14), the inner concave surfaces of the arc-shaped plates (3) at both ends of the arc-shaped recess (14) are arranged opposite to each other, the arc-shaped recess (14) and the two arc-shaped plates (3) cooperate to form a detection cavity (4), an open opening (6) corresponding to the opening (15) is formed at the bottom of the detection cavity (4), and a side cavity (6) is provided in the detection cavity (4) and is arranged along the inner wall of the detection cavity (4) and is aligned with the detection cavity (4). An elastic conductive sheet (2) is provided on the inner wall of the cavity (4) with interference fit, and elastic telescopic rods (5) are provided on both side walls of the inner cavity of the rectangular frame (1) and are connected to the movable ends of the adjacent arc plates (3) and are used to push the two arc plates (3) to move toward each other. The elastic conductive sheet (2) contacts the surface of the cable through the movement of the arc plates (3) toward each other, and an insulating rod (9) for supporting the rectangular frame (1) is provided on one side of the opening (15) of the rectangular frame (1), and an indicator light (12) connected to the circuit of the elastic conductive sheet (2) is provided on the body of the insulating rod (9).
2. A power cable fault detection device according to claim 1, characterized in that: The inner surface of the arc-shaped recess (14) is provided with an arc-shaped slot A (13) arranged along its circumference and with both ends being open structures. The opposite surfaces of the two arc-shaped plates (3) are provided with arc-shaped slots B (16) arranged along its circumference and with both ends being open structures. The elastic conductive sheet (2) is clamped in the arc-shaped slot A (13) and the arc-shaped slot B (16).
3. A power cable fault detection device according to claim 2, characterized in that: The length of the elastic conductive sheet (2) is greater than the circumference of the detection cavity (4).
4. A power cable fault detection device according to claim 3, characterized in that: The movable end of the arc-shaped plate (3) abutting against one end of the elastic conductive sheet (2) is fixedly connected, and the other end of the elastic conductive sheet (2) is fixedly connected with an insulating pull rope (8) for pulling the elastic conductive sheet (2) and shrinking the diameter thereof so as to adhere to the surface of the cable.
5. A power cable fault detection device according to claim 4, characterized in that: A plurality of cable ties (10) for limiting the position of the insulating pull rope (8) are arranged at intervals on the body of the insulating rod (9).
6. A power cable fault detection device according to claim 5, characterized in that: A reel (11) for reeling in the insulating pull rope (8) is provided at the end of the rod body of the insulating rod (9).
7. A power cable fault detection device according to claim 6, characterized in that: The insulating rod (9) is hingedly connected to the rectangular frame (1).
8. A power cable fault detection device according to claim 1, characterized in that: The movable ends of the two arc-shaped plates (3) are each provided with an extension plate (17) extending downwards, one end of the elastic telescopic rod (5) is connected to the inner wall of the rectangular frame (1), and the other end of the elastic telescopic rod (5) is connected to the extension plate (17).
9. A power cable fault detection device according to claim 8, characterized in that: The lower ends of the two extension plates (17) are each provided with an inclined plate (18) with its end portion inclined toward the inner side wall of the adjacent rectangular frame (1), and the two inclined plates (18) cooperate to form an expanded diameter opening (7).
10. A power cable fault detection device according to claim 9, characterized in that: The elastic telescopic rod (5) comprises a telescopic rod, a spring is sleeved on the telescopic rod, one end of the telescopic rod is fixedly connected to the inner wall of the rectangular frame (1), and the other end of the telescopic rod is hingedly connected to the extension plate (17).