Power circuit insulation detection device

Abstract

The invention discloses a power circuit insulation detection device, which is characterized in that a fixed seat is arranged in the middle of the plate surface of a vertical plate, the end surface, far away from the vertical plate, of the fixed seat is a concave cambered surface A matched with a cable, and the plate surface of the vertical plate is also provided with two sliding blocks which are respectively positioned on the upper side and the lower side of the fixed seat and can synchronously move towards each other or back to back; the ends, away from the vertical plate, of the two sliding blocks are each provided with a movable seat, the opposite faces of the two movable seats are inwards-concave cambered surfaces B arranged in the same circumferential direction as the inwards-concave cambered surface A. Elastic conductive pieces capable of being bent under stress are detachably installed on the inwards-concave cambered surfaces A and the inwards-concave cambered surfaces B. A gap is reserved between each elastic guide piece and the adjacent inwards-concave cambered surface A or the adjacent inwards-concave cambered surface B. A connecting seat is arranged at the lower end of the vertical plate, and a warning lamp in circuit connection with the elastic conducting strips is arranged on one side of the connecting seat; according to the invention, through convenient and efficient elastic clamping and sleeving of the cable, efficient insulation detection of the exposed cable in a daily power supply operation process is realized, and power supply safety is greatly guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of power supply safety, and in particular to a power circuit insulation 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 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, and their insulation testing is very important to prevent electrical leakage and fire.

[0003] At present, when conducting insulation testing on power cables, workers usually conduct testing by hand-held testing instruments. This testing method still has the following shortcomings in actual operation: 1. In order to ensure the safety and accuracy of insulation detection, most insulation detection equipment needs to be powered off to perform insulation detection. This means that during the daily inspection of the power supply cable, the power equipment needs to be powered off, which seriously affects the normal operation of the power circuit equipment. 2. During the insulation inspection of power cables, insulation inspection is mainly carried out on the exposed cables. However, these exposed cables are either suspended or laid on the ground. During the inspection, the staff need to climb to a high place or squat to conduct the inspection, which brings great inconvenience to the daily inspection. 3. When conducting insulation testing on the cable surface, the detection probe of the detection equipment must always be attached to the cable surface. Most existing handheld detection equipment requires manual handheld probes for resistance testing. If the cable is long, the staff will need to conduct resistance testing for a long time, which brings great burden to the staff for insulation testing; Therefore, there is an urgent need for a power circuit insulation 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 an insulation detection device for a power circuit. The present invention realizes efficient insulation detection of exposed cables during daily power supply operations by convenient and efficient elastic clamping of cables, thereby greatly ensuring power supply safety.

[0005] To achieve the above object, the present invention adopts the following technical solution: A power circuit insulation detection device comprises a vertical plate, wherein a fixed seat is provided in the middle of the vertical plate surface, and the end surface of the fixed seat away from the vertical plate is a concave arc surface A adapted to the cable, and the vertical plate surface is also provided with two sliders which are respectively located on the upper and lower sides of the fixed seat and can move synchronously toward or away from each other, and the ends of the two sliders away from the vertical plate are provided with movable seats, and the opposite surfaces of the two movable seats are both concave arc surfaces B arranged in the same circumferential direction as the concave arc surface A, and elastic conductive sheets capable of bending under force can be detachably installed on the concave arc surface A and the concave arc surface B, and a gap is left between the elastic guide sheet and the adjacent concave arc surface A or concave arc surface B, and a connecting seat is provided at the lower end of the vertical plate, and a warning light connected to a plurality of elastic conductive sheet circuits is provided on one side of the connecting seat, and an insulating rod is detachably installed at the lower end of the connecting seat.

[0006] Furthermore, the vertical plate surface is provided with a slide groove arranged along the length direction of the vertical plate, and a bidirectional screw rod arranged along the axial direction of the slide groove is rotatably installed in the slide groove. Two sliding blocks are slidably installed in the slide groove and are respectively threadedly connected to the two ends of the bidirectional screw rod. The upper end of the bidirectional screw rod passes through the slide groove and a turning handle is provided at its end.

[0007] Furthermore, the slider is installed with a rotating shaft that can rotate along the circumferential direction of the concave arc surface A when it is rotated away from the vertical plate, and one end of the movable seat is rotatably connected to the slider through the rotating shaft.

[0008] Furthermore, horizontal plates perpendicular to the vertical plates are provided at both upper and lower ends of the vertical plate surface, and a spring is provided between the horizontal plate and the adjacent movable seat. One end of the spring is fixedly connected to the horizontal plate, and the other end of the spring is fixedly connected to the end of the movable seat away from the slider. The natural length of the spring is greater than the spacing between the horizontal plate and the adjacent movable seat.

[0009] Furthermore, the end surfaces of the two movable seats away from the vertical plate are both provided with arc-shaped guide plates, and the raised surfaces of the two arc-shaped guide plates are arranged opposite to each other and cooperate to form a guide opening for the cable to slide in.

[0010] Furthermore, both ends of the inner concave arc surface A and the inner concave arc surface B are provided with side plates, and the opposite surfaces of the two side plates are provided with grooves for clamping the ends of the elastic conductive sheets.

[0011] Furthermore, the elastic conductive sheet is an arc-shaped structure, and its concave arc surface is arranged opposite to the adjacent concave arc surface A or the concave arc surface B.

[0012] Furthermore, the elastic conductive sheet is a graphene or carbon nanotube composite material. Furthermore, a connecting screw hole is provided on the lower end surface of the connecting seat, and a connecting head threadedly connected to the connecting screw hole is provided on the end of the insulating rod.

[0013] Compared with the prior art, the invention has the following beneficial effects: by setting a fixed seat and two movable seats, a C-shaped card slot can be formed, thereby facilitating the card sleeve of the cable and providing convenience for the subsequent insulation detection of the cable skin; By setting two movable seats that can move synchronously toward or away from each other, adaptive adjustment can be made according to the diameter of the cable to be tested, thus providing strong support for subsequent accurate and efficient insulation testing of the cable; By providing the concave arc surface and the elastic conductive sheet, when the cable is subjected to insulation testing, the elastic conductive sheet can be fully and effectively attached to the cable surface, providing strong support for subsequent accurate and efficient insulation testing; By setting a rotating connected movable seat and a spring, the two movable seats can be pushed to rotate towards each other, which not only facilitates the subsequent clamping on the cable, but also enables the elastic conductive sheets on the opposite surfaces of the two movable seats to fully adhere to the cable skin, ensuring the accuracy and efficiency of subsequent insulation testing; By setting an indicator light connected to the elastic conductive sheet circuit, it can be intuitively observed whether the cable has leakage through the flashing of the indicator light; The provision of insulating rods not only facilitates insulation testing of overhead cables or ground cables for workers, without the need for workers to climb or squat for testing, but also ensures safety during the testing process; The present invention uses a convenient and efficient elastic clamp for the cable, which not only allows the staff to complete the insulation test of the cable in the daily power supply process, avoiding the situation that the traditional insulation test needs to be powered off, but also during the test of the overhead or ground-laid cables, there is no need for the staff to climb or squat, which greatly facilitates the insulation test of the cable by the staff; the present invention has a simple structure and is easy to operate and use, and realizes efficient insulation test of exposed cables in the daily power supply operation process, which greatly guarantees the power supply safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the vertical plate frame structure of the present invention; Figure 3 It is a schematic diagram of the structure of the movable seat of the present invention; Figure 4 It is a schematic diagram of the fixing seat structure of the present invention.

[0015] In the figure: 1. horizontal plate; 2. spring; 3. slider; 4. movable seat; 5. arc-shaped guide plate; 6. concave arc surface B; 7. guide port; 8. elastic conductive sheet; 9. concave arc surface A; 10. fixed seat; 11. slide groove; 12. vertical plate; 13. warning light; 14. connecting seat; 15. insulating rod; 16. turning handle; 17. bidirectional screw rod; 18. connecting screw hole; 19. connecting head; 20. screw hole; 21. rotating shaft; 22. side plate; 23. groove. DETAILED DESCRIPTION

[0016] 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.

[0017] Please refer to the instruction manual Figure 1-4 , the present invention provides a technical solution: Embodiment 1, an electric power circuit insulation detection device, comprising a vertical plate 12, a fixed seat 10 is provided in the middle of the vertical plate 18, the end surface of the fixed seat 10 away from the vertical plate 18 is an inner concave arc surface A9 adapted to the cable, and the vertical plate 18 is also provided with two sliders 3 respectively located on the upper and lower sides of the fixed seat 10 and capable of synchronously moving toward or away from each other, specifically, the vertical plate 18 is provided with a slide groove 11 arranged along the length direction of the vertical plate 18, a bidirectional screw rod 17 arranged along the axial direction of the slide groove 11 is rotatably installed in the slide groove 11, and the two sliders 3 are slidably installed in the slide groove 11, and the two sliders 3 are respectively provided with screw holes 20 threadedly connected to the two ends of the bidirectional screw rod 17, and the two sliders 3 are respectively threadedly connected to the two ends of the bidirectional screw rod 17 through the screw holes 20, the upper end of the bidirectional screw rod 17 passes through the slide groove 11, and a rotating handle 16 is provided at its end, and the two sliders 3 can be driven to move toward or away from each other synchronously by driving the bidirectional screw rod 17 to rotate using the rotating handle 16; The two sliders 3 are provided with movable seats 4 at one end away from the vertical plate 18. The two movable seats 4 are located in front of the fixed seat 10. The opposite surfaces of the two movable seats 4 are both concave arc surfaces B6 arranged in the same circumferential direction as the concave arc surface A9. The concave arc surface A9 and the concave arc surface B6 can be detachably installed with elastic conductive sheets 8 that can be bent under force. There is a gap between the elastic guide sheet 8 and the adjacent concave arc surface A9 or concave arc surface B6. The lower end of the vertical plate 12 is provided with a connecting seat 14. One side of the connecting seat 14 is provided with a warning light 13 connected to the circuit of several elastic conductive sheets 8. The lower end of the connecting seat 14 is detachably installed with an insulating rod 15. Specifically, the lower end surface of the connecting seat 14 is provided with a connecting screw hole 18, and the end of the insulating rod 15 is provided with a connecting head 19 threadedly connected to the connecting screw hole 18. ; When performing insulation testing on a power supply cable that is suspended or laid on the ground, the staff first adjusts the distance between the two movable seats 4 according to the diameter of the cable, that is, by rotating the handle 16 to drive the bidirectional screw rod 17 to drive the two slides 3 to move synchronously in the same direction or in reverse directions, thereby adjusting the distance between the two movable seats 4. When the distance between the two movable seats 4 is adjusted to match the cable diameter, the staff can grasp the insulating rod 15 to clamp the device on the cable, and use the elastic conductive sheets 8 on the concave arc surfaces A9 and B6 to adhere to the cable skin to push the device to slide along the cable. When local leakage occurs in the cable, the current is transmitted to the warning light 13 through the elastic conductive sheet 8. The warning light 13 will inevitably flash when receiving the current, thereby completing the insulation test of the cable.

[0018] Embodiment 2: In order to facilitate the clamping of the device onto the cable, the spacing between the two movable seats 4 must be slightly larger than the diameter of the cable, which may result in the elastic conductive sheet 8 being unable to fully contact the cable skin during subsequent mobile detection, affecting the insulation detection effect. To this end, the slider 3 is installed with a rotating shaft 21 that can rotate circumferentially along the concave arc surface A9 when it is rotated away from the vertical plate 18. One end of the movable seat 4 is rotatably connected to the slider 3 through the rotating shaft 21. The upper and lower ends of the vertical plate 18 are provided with a horizontal plate 1 that is perpendicular to the vertical plate 18. A spring 2 is provided between the horizontal plate 1 and the adjacent movable seat 4. One end of the spring 2 is fixedly connected to the horizontal plate 1, and the other end of the spring 2 is fixedly connected to the end of the movable seat 4 away from the slider 3. The natural length of the spring 2 is greater than the spacing between the horizontal plate 1 and the adjacent movable seat 4. In order to ensure that the spring 2 can effectively apply elastic force to the movable seat 4, the spring 2 is arranged parallel to the vertical plate 12. By rotating the connecting movable seat 4 and the spring 2, when adjusting the distance between the two movable seats 4, the front end openings of the two movable seats 4 can be made slightly smaller than the diameter of the cable. The elasticity of the spring 2 can not only ensure that the device is effectively clamped onto the cable, but also ensure that the elastic conductive skin 8 is in full contact with the cable surface.

[0019] Embodiment three, due to the elastic force exerted by the spring 2 on the movable seat 4, when the opening between the two movable seats 4 is smaller than the diameter of the cable, the cable clamping can only be achieved by the staff applying force. In order to facilitate the clamping of the cable, the end faces of the two movable seats 4 away from the vertical plate 18 are provided with arc-shaped guide plates 5. The raised surfaces of the two arc-shaped guide plates 5 are arranged opposite to each other and cooperate to form a guide opening 7 for the cable to slide in. Due to the arrangement of the two arc-shaped guide plates 5, the distance between the front ends of the guide opening 7 will inevitably be larger than the diameter of the cable, and the arc surface of the guide opening 7 can be used to easily and conveniently guide the cable to be clamped between the two movable seats 4.

[0020] Embodiment 4: In order to ensure that the elastic conductive sheet 8 can fully contact the cable skin, the elastic conductive sheet 8 is an arc-shaped structure, and its concave arc surface is arranged opposite to the adjacent concave arc surface A9 or concave arc surface B6. In order to ensure the elasticity and conductivity of the elastic conductive sheet 8, the elastic conductive sheet 8 is a graphene or carbon nanotube composite material; In order to facilitate the subsequent disassembly, inspection and replacement of the spring conductive sheet 8, side plates 22 are provided at both ends of the concave arc surface A9 and the concave arc surface B6, and grooves 23 for clamping the ends of the elastic conductive sheet 8 are provided on the opposite surfaces of the two side plates 22.

[0021] 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 circuit insulation detection device, comprising a vertical plate (12), characterized in that: A fixed seat (10) is provided in the middle of the vertical plate (18), and the end surface of the fixed seat (10) away from the vertical plate (18) is an inner concave arc surface A (9) adapted to the cable. The vertical plate (18) is also provided with two sliders (3) located at the upper and lower sides of the fixed seat (10) and capable of synchronously moving toward or away from each other. The ends of the two sliders (3) away from the vertical plate (18) are both provided with movable seats (4), and the opposite surfaces of the two movable seats (4) are both inner concave arc surfaces arranged in the same circumferential direction as the inner concave arc surface A (9). The concave arc surface B (6), the inner concave arc surface A (9) and the inner concave arc surface B (6) are all detachably mounted with elastic conductive sheets (8) capable of bending under force, a gap is left between the elastic guide sheet (8) and the adjacent inner concave arc surface A (9) or inner concave arc surface B (6), a connecting seat (14) is provided at the lower end of the vertical plate (12), a warning light (13) connected to the circuit of the plurality of elastic conductive sheets (8) is provided on one side of the connecting seat (14), and an insulating rod (15) is detachably mounted at the lower end of the connecting seat (14).

2. A power circuit insulation detection device according to claim 1, characterized in that: The vertical plate (18) is provided with a slide groove (11) arranged along the length direction of the vertical plate (18), and a bidirectional screw rod (17) arranged along the axial direction of the slide groove (11) is rotatably installed in the slide groove (11). Two sliders (3) are slidably installed in the slide groove (11) and are respectively threadedly connected to the two ends of the bidirectional screw rod (17). The upper end of the bidirectional screw rod (17) passes through the slide groove (11) and is provided with a rotating handle (16) at its end.

3. A power circuit insulation detection device according to claim 2, characterized in that: The sliding block (3) is rotatably mounted away from the vertical plate (18) with a rotating shaft (21) that can rotate along the circumference of the inner concave arc surface A (9), and one end of the movable seat (4) is rotatably connected to the sliding block (3) via the rotating shaft (21).

4. A power circuit insulation detection device according to claim 3, characterized in that: A horizontal plate (1) perpendicular to the vertical plate (18) is provided at both upper and lower ends of the vertical plate (18), a spring (2) is provided between the horizontal plate (1) and the adjacent movable seat (4), one end of the spring (2) is fixedly connected to the horizontal plate (1), and the other end of the spring (2) is fixedly connected to an end of the movable seat (4) away from the slider (3), and the natural length of the spring (2) is greater than the spacing between the horizontal plate (1) and the adjacent movable seat (4).

5. A power circuit insulation detection device according to claim 4, characterized in that: The end surfaces of the two movable seats (4) away from the vertical plate (18) are both provided with arc-shaped guide plates (5), and the convex surfaces of the two arc-shaped guide plates (5) are arranged opposite to each other and cooperate to form a guide opening (7) for the cable to slide into.

6. A power circuit insulation detection device according to claim 1, characterized in that: Both ends of the inner concave arc surface A (9) and the inner concave arc surface B (6) are provided with side plates (22), and the opposite surfaces of the two side plates (22) are provided with grooves (23) for clamping the ends of the elastic conductive sheets (8).

7. A power circuit insulation detection device according to claim 6, characterized in that: The elastic conductive sheet (8) is an arc-shaped structure, and its concave arc surface is arranged opposite to the adjacent concave arc surface A (9) or the concave arc surface B (6).

8. A power circuit insulation detection device according to claim 7, characterized in that: The elastic conductive sheet (8) is a graphene or carbon nanotube composite material.

9. The power circuit insulation detection device according to claim 1, characterized in that: A connecting screw hole (18) is provided on the lower end surface of the connecting seat (14), and a connecting head (19) threadedly connected to the connecting screw hole (18) is provided on the end of the insulating rod (15).

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