Simulation switch cabinet partial discharge test device

Abstract

The utility model belongs to the technical field of live detection, and particularly relates to a simulation switch cabinet partial discharge testing device, which comprises a rotating motor, a bent pipe and a discharge detector, an output shaft of a hydraulic jack is fixedly connected with the rotating motor, an output shaft of the rotating motor is movably connected with the bent pipe with an arc-shaped section, the periphery of the bent pipe is wrapped with a rubber layer, and the discharge detector is connected with the rubber layer. The end, away from the rotating motor, of the bent pipe is fixedly connected with a discharge detector. The problem that in the prior art, a lifting column can only drive the discharge detector to vertically move up and down, so that the displacement convenience of the discharge detector is reduced is solved, and the flexibility and the detection efficiency of test equipment are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of live detection, and specifically refers to a partial discharge test device for simulating a switch cabinet. Background Art

[0002] After long-term use, switch cabinets may have problems such as partial discharge of current caused by line aging. Currently, handheld partial discharge test devices are generally used to test the surface of the switch cabinet. However, different types of switch cabinets have different heights. For detection at higher positions, external tools (such as stools and ladders) are required, which increases the difficulty of detection.

[0003] In order to solve the above problems, a Chinese patent with announcement number CN216387273U proposes a switch cabinet partial discharge live detection device, which drives the driven gear and the screw to rotate by rotating the active gear. The rotating screw is threadedly connected to the lifting column, so that the lifting column can be raised and lowered in the fixed tube, and finally the partial discharge detector can be driven to rise and fall, so that the high place of the switch cabinet can be detected.

[0004] The disadvantage is that the lifting column can only perform simple vertical displacement up and down, which reduces the displacement flexibility of the discharge detector movably connected on its top. When the local discharge of the switch cabinet is small, the discharge detector on the top of the lifting column cannot accurately detect it due to the long distance between the two. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a simulated switch cabinet partial discharge test device, which solves the problem in the prior art that the lifting column can only drive the discharge detector to move vertically up and down, thereby reducing the convenience of displacement of the discharge detector, and improves the flexibility of the test equipment and the detection efficiency.

[0006] The technical solution adopted by the utility model is as follows: the utility model proposes a simulated switch cabinet partial discharge test device, including a lifting device and a rotating device;

[0007] The jacking device includes a hydraulic jack;

[0008] The lifting device adjusts the height of the rotating device, and the output end of the hydraulic jack is fixedly connected to the rotating device;

[0009] The rotating device includes a rotating motor, a bent pipe, and a discharge detector;

[0010] The output shaft of the hydraulic jack is fixedly connected to the rotating motor;

[0011] The movable connection section of the output shaft of the rotating motor is an arc-shaped curved pipe, and the outer circumference of the curved pipe is wrapped with a rubber layer;

[0012] One end of the bent pipe away from the rotating motor is fixedly connected to the discharge detector.

[0013] Furthermore, the switch cabinet partial discharge detection device further includes a displacement device, and the displacement device is fixedly connected to the jacking device;

[0014] The displacement device includes a loading plate, a rotating wheel, a displacement rod, and a pull rod;

[0015] The loading plate is a rectangular parallelepiped structure, and the upper wall of the loading plate is fixedly connected to the hydraulic jack;

[0016] The lower wall of the loading plate is rotatably connected to four rotating wheels at equal intervals;

[0017] Two rectangular displacement rods are symmetrically fixedly connected to the upper wall of the loading plate, and the two displacement rods are inclined at a certain angle to the upper wall of the loading plate;

[0018] The two displacement rods are respectively fixedly connected to one end of the pull rod, and the pull rod is a cylindrical structure.

[0019] Furthermore, the jacking device also includes a hydraulic pump and a pressure supply pipe;

[0020] A hydraulic pump is fixedly connected to the upper wall of the loading plate;

[0021] The surface of the hydraulic jack close to the hydraulic pump is fixedly connected to a pressure supply pipe, and one end of the pressure supply pipe away from the hydraulic jack is fixedly connected to the hydraulic pump.

[0022] Furthermore, the rotating device also includes a sliding cavity, a fine-tuning airbag, and a sliding block;

[0023] The end of the bent pipe close to the discharge detector is provided with a cylindrical sliding cavity inwardly;

[0024] The surface of the discharge detector close to the bent pipe is fixedly connected to a cylindrical slider, and the slider is slidably connected to the sliding cavity;

[0025] The side wall of the sliding cavity away from the opening is fixedly connected to a fine-tuning airbag with a semicircular arc cross-section, and the outer wall of the fine-tuning airbag is fixedly connected to the surface of the slider away from the discharge detector;

[0026] The fine-tuning airbag is externally connected to a first air pump. When the externally connected first air pump injects air into the fine-tuning airbag, the fine-tuning airbag expands due to the intake of air, thereby pushing the slider and the discharge detector to slide in the sliding cavity.

[0027] Furthermore, the size of the sliding block is the same as the size of the sliding cavity.

[0028] Preferably, the rotating device further comprises an adjusting airbag;

[0029] The side wall of the sliding cavity is symmetrically fixedly connected with two regulating air bags with semicircular cross-sections. When the two regulating air bags are not working, the same amount of gas is injected into the inside, thereby ensuring that the slider slides smoothly in the sliding cavity;

[0030] The two regulating airbags are respectively connected to the suction pipe and exhaust pipe of the vacuum pump. The suction pipe of the vacuum pump draws gas from one regulating airbag connected to it to make it shrink. At the same time, the extracted gas enters the other regulating airbag through the exhaust pipe. The regulating airbag that is expanded by air intake cooperates with the regulating airbag that is contracted to achieve the up and down pitch operation of the discharge detector.

[0031] Preferably, the diameter of the sliding block is smaller than the diameter of the sliding cavity.

[0032] The beneficial effects achieved by the utility model using the above structure are as follows:

[0033] Firstly, by setting a curved pipe with an arc-shaped cross-section, the discharge detector on the top of the curved pipe can be better oriented toward the switch cabinet, so that the position of the current partial discharge can be detected more accurately and quickly, thereby improving the practicality and accuracy of the test device.

[0034] Secondly, when the rotation radius of the bent pipe is close to the gap between the switch cabinets, the rotation of the bent pipe and the discharge detector driven by the rotating motor is limited. At this time, the external first air pump injects air into the fine-tuning airbag, and the fine-tuning airbag expands and then pushes the slider and the discharge detector to slide outward in the sliding cavity, so that the discharge detector can be close to the part that needs to be detected in a space with a small gap, further improving the practicability of the test device, while also reducing the risk factor of personnel detecting partial discharge of current.

[0035] Thirdly, when the rotation radius of the bend is close to the gap between the switch cabinets, the external first air pump injects air into the fine-tuning airbag, and the fine-tuning airbag expands due to the intake of air, thereby pushing the slider and the discharge detector to slide outward in the sliding cavity, so that the discharge detector can still approach the part that needs to be detected in a space with a small gap. Then the vacuum pump draws the gas inside an adjusting airbag to shrink it, and fills the extracted gas into the inside of another adjusting airbag through the exhaust pipe to expand it, thereby realizing the up and down pitch of the discharge detector, further improving the flexibility and convenience of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a side view of a simulated switch cabinet partial discharge test device proposed by the utility model;

[0037] Figure 2 This is a structural schematic diagram of a simulated switch cabinet partial discharge test device proposed by the utility model;

[0038] Figure 3 This is a cross-sectional view of the elbow according to the second embodiment of the present utility model;

[0039] Figure 4 This is a cross-sectional view of the elbow in working state according to the second embodiment of the utility model;

[0040] Figure 5 This is a cross-sectional view of the elbow of the third embodiment of the present utility model;

[0041] Figure 6 This is a cross-sectional view of the elbow in working state according to the third embodiment of the present utility model.

[0042] Wherein, 100, displacement device, 110, loading plate, 120, rotating wheel, 130, displacement rod, 140, pulling rod;

[0043] 200, lifting device, 210, hydraulic jack, 220, hydraulic pump, 230, pressure supply pipe;

[0044] 300. Rotating device, 310. Rotating motor, 320. Bending pipe, 330. Discharge detector, 340. Sliding cavity, 350. Fine-tuning airbag, 360. Sliding block, 370. Adjusting airbag.

[0045] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0047] Embodiment 1

[0048] like Figure 1 and Figure 2 As shown, a simulated switch cabinet partial discharge test device includes a lifting device 200 and a rotating device 300;

[0049] The lifting device 200 includes a hydraulic jack 210;

[0050] The lifting device 200 adjusts the height of the rotating device 300, and the output end of the hydraulic jack 210 is fixedly connected to the rotating device 300;

[0051] The rotating device 300 includes a rotating motor 310, a curved pipe 320, and a discharge detector 330;

[0052] The output shaft of the hydraulic jack 210 is fixedly connected to the rotary motor 310;

[0053] The output shaft of the rotating motor 310 is movably connected to a curved pipe 320 with an arc-shaped cross section, and the outer circumference of the curved pipe 320 is wrapped with a rubber layer;

[0054] One end of the curved pipe 320 away from the rotating motor 310 is fixedly connected to the discharge detector 330 .

[0055] Furthermore, the switch cabinet partial discharge detection device further includes a displacement device 100, and the displacement device 100 is fixedly connected to the lifting device 200;

[0056] The displacement device 100 includes a loading plate 110, a rotating wheel 120, a displacement rod 130, and a pull rod 140;

[0057] The loading plate 110 is a rectangular parallelepiped structure, and the upper wall of the loading plate 110 is fixedly connected to the hydraulic jack 210;

[0058] The lower wall of the loading plate 110 is rotatably connected to four rotating wheels 120 at equal intervals;

[0059] The upper wall of the loading plate 110 is symmetrically fixedly connected with two rectangular parallelepiped displacement rods 130, and the two displacement rods 130 are inclined at a certain angle to the upper wall of the loading plate 110;

[0060] The two displacement rods 130 are respectively fixedly connected to one end of the pull rod 140, and the pull rod 140 is a cylindrical structure.

[0061] Furthermore, the jacking device 200 also includes a hydraulic pump 220 and a pressure supply pipe 230;

[0062] A hydraulic pump 220 is fixedly connected to the upper wall of the loading plate 110;

[0063] The surface of the hydraulic jack 210 close to the hydraulic pump 220 is fixedly connected to the pressure supply pipe 230 , and one end of the pressure supply pipe 230 away from the hydraulic jack 210 is fixedly connected to the hydraulic pump 220 .

[0064] During specific use, the test device is pushed as a whole to the vicinity of the switch cabinet that needs to be tested by pushing the displacement device 100, and then the hydraulic pump 220 supplies pressure to the hydraulic jack 210 through the pressure supply pipe 230, so that the output shaft of the hydraulic jack 210 is lifted upward, thereby driving the rotating device 310 to move upward. When the discharge detector 330 detects partial current discharge, the rotating motor 310 drives the bent pipe 320 to rotate in a circle, so that the discharge detector 330 can better detect the position of the partial current discharge.

[0065] Beneficial effect: By providing a curved pipe 320 with an arc-shaped cross-section, the discharge detector 330 on the top of the curved pipe 320 can be better oriented toward the switch cabinet, so that the position of the current partial discharge can be detected more accurately and quickly, thereby improving the practicality and accuracy of the test device.

[0066] Embodiment 2

[0067] For example, when the gap between the switch cabinets to be detected is too small, and the rotating motor 310 drives the curved pipe 320 to rotate in a circle, the rotation radius of the curved pipe 320 will affect the mobility of the discharge detector 330, so the second embodiment further improves the first embodiment.

[0068] like Figure 3 and Figure 4 As shown, the rotating device 300 further includes a sliding cavity 340, a fine-tuning airbag 350, and a slider 360;

[0069] The end of the curved pipe 320 close to the discharge detector 330 is provided with a cylindrical sliding cavity 340 inwardly;

[0070] The surface of the discharge detector 330 close to the bent pipe 320 is fixedly connected to a cylindrical slider 360, and the slider 360 is slidably connected to the sliding cavity 340;

[0071] The side wall of the sliding cavity 340 away from the opening thereof is fixedly connected to a fine-tuning airbag 350 having a semicircular arc cross-section, and the outer wall of the fine-tuning airbag 350 is fixedly connected to the surface of the slider 360 away from the discharge detector 330;

[0072] The fine-tuning airbag 350 is externally connected to a first air pump. When the externally connected first air pump injects air into the fine-tuning airbag 350 , the fine-tuning airbag 350 expands and pushes the slider 360 and the discharge detector 330 to slide in the sliding cavity 340 .

[0073] The size of the slider 360 is the same as that of the sliding cavity 340 .

[0074] When the rotation radius of the bend pipe 320 is close to the gap between the switch cabinets, the rotating motor 310 drives the bend pipe 320 and the discharge detector 330 to be limited in rotation. At this time, the external first air pump injects air into the fine-tuning airbag 350, and the fine-tuning airbag 350 expands and pushes the slider 360 and the discharge detector 330 to slide outward in the sliding cavity 340, so that the discharge detector 330 can be close to the part that needs to be detected in the space with a small gap, which further improves the practicability of the test device and also reduces the risk factor of personnel detecting partial discharge of current.

[0075] Embodiment 3

[0076] In order to further improve the displacement flexibility of the discharge detector 330 in a small space, the third embodiment further improves the second embodiment.

[0077] like Figure 5 and Figure 6 As shown, the rotating device 300 also includes an adjustment airbag 370;

[0078] The side wall of the sliding cavity 340 is symmetrically fixedly connected with two regulating airbags 370 with a semicircular cross-section. When the two regulating airbags 370 are not working, the same amount of gas is injected into the inside, thereby ensuring that the slider 360 slides smoothly in the sliding cavity 340;

[0079] The two regulating airbags 370 are respectively connected to the suction pipe and exhaust pipe of the vacuum pump. The suction pipe of the vacuum pump draws gas from one regulating airbag 370 connected to it to shrink it, and the extracted gas enters the other regulating airbag 370 through the exhaust pipe. The regulating airbag 370 that is inflated by air cooperates with the shrinking regulating airbag 370 to realize the up and down pitch operation of the discharge detector 330.

[0080] The diameter of the sliding block 360 is smaller than the diameter of the sliding cavity 340 .

[0081] When the rotation radius of the bend pipe 320 is close to the gap between the switch cabinets, the external first air pump injects air into the fine-tuning airbag 350, and the fine-tuning airbag 350 expands due to the intake of air, thereby pushing the slider 360 and the discharge detector 330 to slide outward in the sliding cavity 340, so that the discharge detector 330 can still approach the part that needs to be detected in the space with a smaller gap. Then the vacuum pump draws the gas inside an adjusting airbag 370 to shrink it, and fills the extracted gas into the inside of another adjusting airbag 370 through the exhaust pipe to expand it, thereby realizing the up and down pitch of the discharge detector 330, further improving the flexibility and convenience of the test device.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0084] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A simulated switch cabinet partial discharge test device, comprising a lifting device (200) and a rotating device (300); The lifting device (200) comprises a hydraulic jack (210); The lifting device (200) adjusts the height of the rotating device (300), and the output end of the hydraulic jack (210) is fixedly connected to the rotating device (300); Features: The rotating device (300) comprises a rotating motor (310), a bent pipe (320), and a discharge detector (330); the output shaft of the hydraulic jack (210) is fixedly connected to the rotating motor (310); The output shaft of the rotating motor (310) is movably connected to a curved pipe (320) having an arc-shaped cross-section, and the outer circumference of the curved pipe (320) is wrapped with a rubber layer; The end of the curved pipe (320) away from the rotating motor (310) is fixedly connected to the discharge detector (330); it also includes a sliding cavity (340), a fine-tuning airbag (350), and a sliding block (360); A cylindrical sliding cavity (340) is formed inwardly at one end of the curved pipe (320) close to the discharge detector (330); A cylindrical slider (360) is fixedly connected to the surface of the discharge detector (330) close to the bent pipe (320), and the slider (360) is slidably connected to the sliding cavity (340); The side wall of the sliding cavity (340) away from the opening thereof is fixedly connected to a fine-tuning airbag (350) having a semicircular arc cross-section, and the outer wall of the fine-tuning airbag (350) is fixedly connected to the surface of the sliding block (360) away from the discharge detector (330); The fine-tuning airbag (350) is externally connected to a first air pump. When the externally connected first air pump injects air into the fine-tuning airbag (350), the fine-tuning airbag (350) expands due to the intake of air, thereby pushing the slider (360) and the discharge detector (330) to slide in the sliding cavity (340).

2. A simulated switch cabinet partial discharge test device according to claim 1, characterized in that: The size of the sliding block (360) is the same as the size of the sliding cavity (340).

3. The device for testing partial discharge of a simulated switch cabinet according to claim 1, characterized in that: The rotating device (300) further includes an adjusting airbag (370); The side wall of the sliding cavity (340) is symmetrically fixedly connected to two regulating air bags (370) with semicircular cross-sections, and the same amount of gas is injected into the two regulating air bags (370) when not in operation, thereby ensuring that the slider (360) slides smoothly in the sliding cavity (340); The two regulating airbags (370) are respectively connected to the suction pipe and exhaust pipe of the suction pump. The suction pipe of the suction pump extracts gas from one regulating airbag (370) connected to it to shrink it, and the extracted gas enters the other regulating airbag (370) through the exhaust pipe. The regulating airbag (370) that is inflated by air cooperates with the shrinking regulating airbag (370) to achieve the up and down pitch operation of the discharge detector (330).

4. The device for testing partial discharge of a simulated switch cabinet according to claim 3, characterized in that: The diameter of the sliding block (360) is smaller than the diameter of the sliding cavity (340).

5. The device for testing partial discharge of a simulated switch cabinet according to claim 1, characterized in that: The switch cabinet partial discharge detection device further comprises a displacement device (100), wherein the displacement device (100) is fixedly connected to the lifting device (200); The displacement device (100) comprises a loading plate (110), a rotating wheel (120), a displacement rod (130), and a pull rod (140); the loading plate (110) is a rectangular parallelepiped structure, and the upper wall of the loading plate (110) is fixedly connected to a hydraulic jack (210); The lower wall of the loading plate (110) is rotatably connected to four rotating wheels (120) at equal intervals; Two rectangular parallelepiped displacement rods (130) are symmetrically fixedly connected to the upper wall of the loading plate (110), and the two displacement rods (130) form a certain inclination angle with the upper wall of the loading plate (110); The two displacement rods (130) are respectively fixedly connected to one end of a pull rod (140), and the pull rod (140) is a cylindrical structure.

6. A simulated switch cabinet partial discharge test device according to claim 5, characterized in that: The lifting device (200) further includes a hydraulic pump (220) and a pressure supply pipe (230); A hydraulic pump (220) is fixedly connected to the upper wall of the loading plate (110); The surface of the hydraulic jack (210) close to the hydraulic pump (220) is fixedly connected to a pressure supply pipe (230), and one end of the pressure supply pipe (230) away from the hydraulic jack (210) is fixedly connected to the hydraulic pump (220).

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