A partial discharge device with electric display

Abstract

The present application provides a kind of partial discharge device of electric display, including workbench and be set on the partial discharge detector of workbench, partial discharge detector is connected with sensor, sensor is installed on the support table of workbench side, support table holds up sensor for the partial discharge detection of GIS combination electrical apparatus or switch cabinet;Support table is composed of pedestal and vertical rod, vertical rod is fixed to the top surface of pedestal and is hollowly arranged;Vertical rod is set with support frame, support frame is connected with sensor by clamping mechanism;Anti-slip mechanism is arranged on the top of vertical rod, and the anti-slip mechanism is connected with support frame and is locked to limit its movement;Pedestal is internally provided with lever assembly connected with anti-slip mechanism, and the lever assembly can control the anti-slip mechanism to release the locking of support frame;The present application provides a clamping mechanism for fixing sensor, the clamping mechanism is installed on the support frame, the position of sensor is changed by the lifting adjustment of support frame, and safety protection is provided after lifting adjustment to avoid falling and sliding off, improve safety.

Description

Technical Field

[0001] This invention relates to the field of auxiliary devices for power equipment testing, and in particular to a partial discharge device with live display. Background Technology

[0002] Ultrasonic partial discharge detection is widely used in the live-line testing of GIS switchgear and switchgear in substations.

[0003] During ultrasonic partial discharge testing, a special testing coupling agent should be evenly applied to the detection surface of the ultrasonic sensor, and appropriate pressure should be applied to make it adhere tightly to the outer surface of the housing to minimize signal attenuation. It should also be ensured that the ultrasonic sensor remains relatively stationary with respect to the housing under test during the test to improve detection accuracy.

[0004] In practical work, to accurately measure UHF partial discharge signals, operators need to hold the sensor in place at the test position for 3-5 minutes. During partial discharge testing, operators hold the sensor in place at different test positions multiple times. This results in prolonged sensor holding time and an inability to ensure the sensor is properly fixed in the test position, thus placing a significant workload on the operators and affecting the test quality.

[0005] Currently, patent document CN112045585B discloses an auxiliary installation device for partial discharge sensors in GIS equipment. The sensor is fixed to a base, and fastening components are used to secure the entire device to the insulating disk of the GIS equipment to be tested for partial discharge. This ensures the sensor is firmly mounted on the insulating disk, guaranteeing effective testing and detection quality, reducing operational difficulty, and significantly improving work efficiency. In practical applications where testing time is short, handheld operation is common. Each time the testing position is changed, the weight of the sensor adds considerable stress, and there is a risk of it slipping from the hand, potentially damaging the equipment and posing safety hazards. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by providing a partial discharge device with live display. It is equipped with an adjustable support device that provides stable support for the sensor, enabling safe and efficient ultrasonic partial discharge detection. The lifting adjustment also features one-way self-locking to prevent slippage and improve safety.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution to address the issue that the weight of the sensor puts considerable pressure on the operator each time the detection position is changed, and that there is a risk of the sensor slipping from the operator's hand each time the position is switched, which could damage the equipment and pose a safety hazard to personnel.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A partial discharge device with live display includes a workbench and a partial discharge detector mounted on the workbench. The partial discharge detector is connected to a sensor, which is mounted on a support platform on the side of the workbench. The support platform supports the sensor for partial discharge detection of GIS switchgear or switch cabinet. The support platform consists of a base and an upright, the upright being hollow and fixed to the top surface of the base; a support frame is sleeved on the upright, and the support frame is connected to the sensor through a clamping mechanism; The top of the upright is provided with an anti-slip mechanism. The support frame is sleeved on the outside of the upright and covers the anti-slip mechanism. The anti-slip mechanism is connected to the support frame to limit and lock its movement. The base is equipped with a lever assembly connected to the anti-slip mechanism, which can control the anti-slip mechanism to release the locking of the support frame.

[0009] Preferably, the support frame is a hollow structure with an open bottom, and a guide rod for inserting into the upright is installed inside the support frame, with a rack installed on the side of the guide rod.

[0010] Preferably, the anti-slip mechanism includes a housing and a first rotating shaft. The housing has a limiting hole through which the guide rod and the rack pass. The first rotating shaft is located inside the housing and distributed on both sides of the limiting hole. The first rotating shaft is geared to the rack.

[0011] Preferably, the housing is further provided with a second rotating shaft, which is geared to one of the first rotating shafts. A ratchet is sleeved on the second rotating shaft, and a pawl is connected to the ratchet. The other end of the pawl is connected to a first pull rod that passes through the housing.

[0012] Preferably, the anti-slip mechanism further includes a third rotating shaft and an elastic element. The third rotating shaft is located inside the housing and is gear-driven with one of the first rotating shafts and the elastic element. The third rotating shaft is connected to a driver to achieve rotation, and the elastic element is connected to the first pull rod.

[0013] Preferably, the elastic element includes a vertical plate and a toothed plate. The vertical plate has a sliding groove on its side. The toothed plate is installed inside the sliding groove and slides with it. The toothed plate is geared with the third rotating shaft. The end of the toothed plate is connected to teeth by a spring. The middle part of the toothed plate is connected and fixed to the first pull rod by a connecting rod.

[0014] Preferably, the third rotating shaft is engaged with the first rotating shaft via a first gear, the first gear comprising an inner ring fitted onto the third rotating shaft and a gear ring fitted onto the outer side of the inner ring, the inner ring and the gear ring being engaged.

[0015] Preferably, the upright is equipped with a clamp and a sleeve. The clamp is used to support the guide rod and maintain its vertical movement, and the sleeve is used for the first tie rod to pass through to prevent it from bending and deforming.

[0016] Preferably, the lever assembly includes a lever, a second pull rod, and a slider. The slider has an inclined groove, the first pull rod passes through the inclined groove and slides in cooperation with it, the lever is mounted on a bracket and rotatably connected to the second pull rod, and the other end of the second pull rod is connected to the slider.

[0017] Preferably, the lever has a V-shaped structure, and the other end of the lever protrudes partially onto the base surface via a spring support.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a partial discharge device with live display, which includes a clamping mechanism for fixing a sensor. The clamping mechanism is mounted on a support frame, and the position of the sensor can be changed by adjusting the height of the support frame. The device also provides safety protection after the height adjustment to prevent the sensor from slipping and falling, thereby improving safety and facilitating partial discharge detection.

[0019] This invention provides an anti-slip mechanism that works in conjunction with a guide rod of a support frame, allowing the guide rod and the anti-slip mechanism to lock in one direction, making the support frame movable but not movable, thus providing safety during height adjustment.

[0020] This invention provides a manual component and an automatic component for controlling the connection with the guide rod, based on the locking design of the guide rod. The one-way locking between the guide rod and the anti-slip mechanism can be released when a lowering adjustment is required. The automatic component can automatically control the raising and lowering of the support frame, freeing up the workers' hands and improving efficiency during long-term work.

[0021] The present invention incorporates a first gear with a reversing delay rotation in the automatic component, preventing the automatic lifting process from locking up. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support platform structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional disassembled structure of the upright and support frame of the present invention; Figure 4 This is a first-view structural diagram of the shell of the present invention after it has been disassembled. Figure 5 This is a schematic diagram of the second-view structure of the shell after it has been disassembled. Figure 6 This is a schematic diagram of the manual component structure of the anti-slip mechanism of the present invention; Figure 7 This is a schematic diagram of the automatic component structure of the anti-slip mechanism of the present invention; Figure 8 This is a schematic diagram of the first gear cross-sectional split structure of the present invention; Figure 9 This is a schematic diagram of the lever assembly structure of the present invention.

[0024] Drawing number explanation: 1. Base; 2. Upright pole; 21. Clamp; 22. Sleeve; 3. Anti-slip mechanism; 31. Housing; 32. First rotating shaft; 33. Limiting hole; 34. Second rotating shaft; 35. Ratchet; 36. Pawl; 37. First pull rod; 38. Third rotating shaft; 39. Elastic element; 391. Upright plate; 392. Toothed plate; 393. Slide groove; 394. Tooth; 310. First gear; 4. Support frame; 41. Guide rod; 42. Rack; 5. Clamping mechanism; 6. Lever assembly; 61. Lever; 62. Second pull rod; 63. Slider; 64. Inclined groove; 7. Worktable; 8. Partial discharge detector. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0027] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] Example: Please see Figure 1-9 A partial discharge device with live display includes a workbench 7 and a partial discharge detector 8 disposed on the workbench 7. The partial discharge detector 8 is connected to a sensor, which is mounted on a support platform on the side of the workbench 7. The support platform supports the sensor for partial discharge detection of GIS switchgear or switch cabinet. The support platform consists of a base 1 and a vertical pole 2. The vertical pole 2 is hollow and fixed to the top surface of the base 1. A support frame 4 is sleeved on the vertical pole 2. The support frame 4 is connected to the sensor through a clamping mechanism 5. The top of the upright 2 is equipped with an anti-slip mechanism 3. The support frame 4 is fitted on the outside of the upright 2 and covers the anti-slip mechanism 3. The anti-slip mechanism 3 is connected to the support frame 4 to limit and lock its movement. The base 1 is equipped with a lever assembly 6 that is connected to the anti-slip mechanism 3. The lever assembly 6 can control the anti-slip mechanism 3 to release the lock on the support frame 4.

[0030] The workbench 7 of this application is also equipped with a PC for connecting to the partial discharge detector 8, which is used to process and feed back the detection data. The sensor connected to the partial discharge detector 8 is mounted on a support platform. The support platform has a height-adjustable function to adjust the position of the sensor and replace manual support during detection. The support platform has an anti-slip function, which can effectively avoid equipment damage and personal safety issues caused by the sensor falling.

[0031] The following describes some embodiments of this application in detail with reference to the accompanying drawings: This embodiment provides a partial discharge device with live display, including a base 1, a vertical rod 2, a support frame 4, and a clamping mechanism 5. The clamping mechanism 5 is mounted on top of the support frame 4, and the vertical rod 2 is mounted on the base 1, with the support frame 4 fitted onto the vertical rod 2. The support frame 4 can slide on the vertical rod 2, changing the position of the clamping mechanism 5. A sensor is mounted on the clamping mechanism 5 for partial discharge detection. The support of the vertical rod 2 and the support frame 4 reduces the problem of supporting the sensor. Placing the base 1 on a movable platform facilitates sensor movement.

[0032] In practical implementation, an anti-slip mechanism 3 is installed at the top of the upright 2 to connect with the support frame 4. This mechanism locks the support frame 4 once it reaches a certain height, preventing the sensor from slipping and improving stability. A lever assembly 6 is installed on the base 1 to connect with the anti-slip mechanism 3. In its natural state, the anti-slip mechanism 3 and the support frame 4 are always locked. The lever assembly 6 can be used to unlock the anti-slip mechanism 3 from the support frame 4. Furthermore, the anti-slip mechanism 3 can be equipped with electrical devices to automatically unlock and control the movement of the support frame 4.

[0033] It should be noted that the support frame 4 has a hollow structure with an opening at the bottom. Inside the support frame 4, a guide rod 41 extending to the opening is vertically installed. When the support frame 4 is placed on the upright 2, the guide rod 41 will pass through the anti-slip mechanism 3 and be inserted into the upright 2. In addition, racks 42 are symmetrically fixed on the side of the guide rod 41. When the guide rod 41 passes through the anti-slip mechanism 3, the racks 42 engage with its internal components.

[0034] Furthermore, the upright 2 is a hollow structure with openings at the top and bottom. The guide rod 41 maintains a distance from the inner wall of the upright 2 when it is inserted into the upright 2. The guide rod 41 is supported by a clamp 21 installed on the upright 2. The guide rod 41 can pass through the clamp 21 and slide with it. The clamp 21 is used to maintain the vertical movement of the guide rod 41.

[0035] In this embodiment, the anti-slip mechanism 3 consists of a housing 31, a manual component, and an automatic component. Both the manual and automatic components are installed inside the housing 31 and connected to each other. The manual component is connected to and controlled by the lever component 6. The automatic component carries a driver and controls the manual component through connection to it. The manual component is arranged around the guide rod 41.

[0036] Specifically, the manual assembly includes a first rotating shaft 32, a second rotating shaft 34, a ratchet 35, a pawl 36, and a first pull rod 37. A limiting hole 33 is provided on the housing 31 to allow the guide rod 41 to pass through. Two first rotating shafts 32 are symmetrically arranged on both sides of the limiting hole 33, and both first rotating shafts 32 are engaged with a rack 42 via gears. When manually raising and lowering the sensor, the support frame 4 and the guide rod 41 are moved via the hand-held clamping mechanism 5. At this time, the guide rod 41 is the active structure, and the first rotating shaft 32 is the driven structure. A second rotating shaft 34 is provided on the side of one of the first rotating shafts 32, allowing the first rotating shaft 32 and the second rotating shaft 34 to rotate synchronously through gear meshing. However, a ratchet 35 is sleeved on the second rotating shaft 34, and the ratchet 35 is controlled by the pawl 36, engaging in a one-way manner. Pawl 36 is supported from the middle, with one end in contact with ratchet 35 and the other end connected to the first pull rod 37. When the sensor is lifted, ratchet 35 and pawl 36 slide together and are not jammed. When the sensor moves to the specified height, the sensor falls and is locked by the engagement of ratchet 35 and pawl 36 to prevent it from sliding down.

[0037] The lever assembly 6 can tilt the pawl 36 by pulling down the first lever 37, so that one end of it separates from the ratchet 35, thereby releasing the lock and allowing the sensor to fall back.

[0038] Additionally, the automatic components include a third rotating shaft 38 and an elastic element 39. The third rotating shaft 38 is engaged with the first rotating shaft 32 via a gear set. The elastic element 39 is located on the side of the third rotating shaft 38 and connected to the first pull rod 37. The third rotating shaft 38 is connected to the driver and controlled to rotate. The third rotating shaft 38 is engaged with the first rotating shaft 32 via a gear transmission using a first gear 310. The first gear 310 consists of an inner ring and a gear ring that are engaged. The inner ring is fitted onto the third rotating shaft 38, and the gear ring is fitted onto the inner ring. The engagement between the inner ring and the gear ring creates a rotational gap between the third rotating shaft 38 and the first rotating shaft 32, allowing the driver to rotate in both directions. After each change of direction, a rotational clearance exists between the third rotating shaft 38 and the first rotating shaft 32.

[0039] The elastic element 39 is composed of a vertical plate 391, a toothed plate 392, etc. The vertical plate 391 has a sliding groove 393 on its side. The toothed plate 392 is installed inside the sliding groove 393 and slides with it. The toothed plate 392 is geared with the third rotating shaft 38. The end of the toothed plate 392 is connected to the teeth 394 by a spring. The middle part of the toothed plate 392 is connected and fixed to the first pull rod 37 by a connecting rod. When the third rotating shaft 38 rotates forward or backward, it will drive the toothed plate 392 to move up or down. After moving up or down a certain distance, the elastic element 39 repeatedly meshes with the gear of the third rotating shaft 38 through the teeth 394 to avoid locking. At the same time, when the toothed plate 392 moves up, it controls the ratchet 35 to mesh with the pawl 36. When the toothed plate 392 moves down, it controls the ratchet 35 to disengage from the pawl 36.

[0040] There is a rotational difference between the third rotating shaft 38 and the first rotating shaft 32. The third rotating shaft 38 moves synchronously with the toothed plate 392, which can prioritize the control of the connection between the ratchet 35 and the pawl 36 during the change of direction to avoid locking.

[0041] In this application, the guide rod 41 is restricted by the cooperation of ratchet 35 and pawl 36, and the state of pawl 36 is changed by the coupling control of the first pull rod 37, thereby changing the control of the guide rod 41.

[0042] During manual control, the first pull rod 37 connects to the lever assembly 6, which consists of a lever 61, a second pull rod 62, and a slider 63. The lever 61, with its V-shaped structure, is rotatably mounted on a bracket. One end of the lever 61 connects to the second pull rod 62, while the other end protrudes partially onto the surface of the base 1 via a spring. The second pull rod 62 connects to the slider 63, which has a groove 64. The first pull rod 37 passes through the groove 64 and slides within it. Pressing one end of the lever 61 causes the other end to tilt, changing the inclination of the second pull rod 62 and causing it to drag the slider 63 a short distance. As the slider 63 moves, it pulls down the first pull rod 37, causing the pawl 36 to tilt. After the external force pressing the lever 61 is removed, the lever 61 and pawl 36 can be reset via spring control.

[0043] In addition, the upright 2 is also equipped with an internal sleeve 22. The first tie rod 37 passes through the sleeve 22 and is connected to the inclined groove 64 to prevent it from bending and deforming when it moves.

[0044] The driver in this application does not have or use a self-locking function to avoid conflicts during manual adjustment.

[0045] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A partial discharge device with live display, characterized in that: Includes a workbench (7) and a partial discharge detector (8) mounted on the workbench (7). The partial discharge detector (8) is connected to a sensor. The sensor is mounted on a support platform on the side of the workbench (7). The support platform supports the sensor for partial discharge detection of GIS switchgear or switch cabinet. The workbench 7 is equipped with a PC for connecting to the partial discharge detector (8); The support platform consists of a base (1) and a vertical rod (2). The vertical rod (2) is hollow and fixed to the top surface of the base (1). A support frame (4) is sleeved on the vertical rod (2). The support frame (4) is connected to the sensor through a clamping mechanism (5). The top of the pole (2) is provided with an anti-slip mechanism (3), and the support frame (4) is sleeved on the outside of the pole (2) and covers the anti-slip mechanism (3). The anti-slip mechanism (3) is connected to the support frame (4) to limit and lock its movement. The base (1) is equipped with a lever assembly (6) connected to the anti-slip mechanism (3). The lever assembly (6) can control the anti-slip mechanism (3) to release the lock on the support frame (4). The support frame (4) is a hollow structure with an open bottom. A guide rod (41) for inserting into the upright (2) is installed inside the support frame (4). A rack (42) is installed on the side of the guide rod (41). The anti-slip mechanism (3) includes a housing (31) and a first rotating shaft (32). The housing (31) has a limiting hole (33) through which the guide rod (41) and the rack (42) pass. The first rotating shaft (32) is located inside the housing (31) and distributed on both sides of the limiting hole (33). The first rotating shaft (32) is geared to the rack (42). The housing (31) also has a second rotating shaft (34). The second rotating shaft (34) is geared to one of the first rotating shafts (32). A ratchet (35) is sleeved on the second rotating shaft (34). A pawl (36) is connected to the ratchet (35). The other end of the pawl (36) is connected to a first pull rod (37) that passes through the housing (31). The anti-slip mechanism (3) also includes a third rotating shaft (38) and an elastic element (39). The third rotating shaft (38) is located inside the housing (31) and is gear-driven with one of the first rotating shafts (32) and the elastic element (39). The third rotating shaft (38) is connected to the driver to achieve rotation. The elastic element (39) is connected to the first pull rod (37). The elastic element (39) includes a vertical plate (391) and a toothed plate (392). The vertical plate (391) has a sliding groove (393) on its side. The toothed plate (392) is installed inside the sliding groove (393) and slides with it. The toothed plate (392) is geared with the third rotating shaft (38). The end of the toothed plate (392) is connected to teeth (394) by a spring. The middle part of the toothed plate (392) is connected and fixed to the first pull rod (37) by a connecting rod. The third rotating shaft (38) is geared with the first rotating shaft (32) by a first gear (310). The first gear (310) consists of an inner ring sleeved on the third rotating shaft (38) and a gear ring sleeved on the outside of the inner ring. The inner ring and the gear ring are engaged.

2. The partial discharge device with live display according to claim 1, characterized in that: The upright (2) is equipped with a clamp (21) and a sleeve (22). The clamp (21) is used to support the guide rod (41) and maintain its vertical movement. The sleeve (22) is used for the first tie rod (37) to pass through to prevent it from bending and deforming.

3. A partial discharge device with live display according to claim 2, characterized in that: The lever assembly (6) includes a lever (61), a second pull rod (62), and a slider (63). The slider (63) is provided with a groove (64). The first pull rod (37) passes into the groove (64) and slides with it. The lever (61) is mounted on the bracket and rotatably connected to the second pull rod (62). The other end of the second pull rod (62) is connected to the slider (63).

4. A partial discharge device with live display according to claim 3, characterized in that: The lever (61) has a V-shaped structure, and the other end of the lever (61) protrudes partially to the surface of the base (1) by means of a spring support.

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