A portable partial discharge detection device

Abstract

The present application relates to a portable partial discharge detection device, and relates to the technical field of partial discharge detection equipment, which includes an equipment body, a display arranged on the equipment body, and a signal hole opened on the equipment body. A signal line is also stored in the equipment body, and the signal line is electrically connected to the equipment body through the signal hole. A storage assembly for storing the signal line is also provided in the equipment body. A fixing rod is also stored on the equipment body, and the fixing rod is hollow, and the signal line runs through the fixing rod. The fixing rod is detachably arranged on the equipment body, and an adsorption piece is provided at one end of the fixing rod away from the equipment body. One end of the signal line is connected to a detection sensor, and the adsorption piece includes a detachable arrangement on the fixing rod, and the adsorption piece is adsorbed and connected to the surface of the equipment to be detected. The present application has the effect of improving the detection efficiency of discharge detection, reducing labor consumption, and improving the operability of the discharge detection device.

Description

Technical Field

[0001] The present application relates to the technical field of partial discharge detection devices, and in particular to a portable partial discharge detection device. Background Art

[0002] The partial discharge detector is a partial discharge detection device widely used in power systems. Its working principle is based on the high-frequency pulse current measurement method, also known as the pulse current method. When electrical equipment generates partial discharge, it will generate electromagnetic waves. When the electromagnetic waves propagate outward, they will generate a transient voltage signal to the ground. The partial discharge detector uses a special detector to capture this signal, and amplifies, filters, and displays it, thereby realizing the detection and analysis of partial discharge. Its detection objects include high-voltage switchgear, ring network cabinets, voltage / current transformers, transformers, GIS, overhead lines, cables and other equipment. In addition, the partial discharge detector can also be used in power generation and distribution enterprises, railway systems, petrochemical power supply systems, as well as aerospace and automation detection fields.

[0003] Common partial discharge detection equipment includes a device body with multiple sockets, each socket corresponding to a different channel. A signal line is connected to the device body, one end of the signal line is movably connected to the socket, and the other end of the signal line is connected to a detection sensor, and the signal line is electrically connected to the device body. When performing discharge detection on large equipment, the technician inserts the signal line into the corresponding socket according to the indicators to be detected, and then presses the other end of the signal line against the surface of the device to be detected, and obtains the reading of the current parameters of the current device based on the reading on the display screen of the device body, and performs discharge detection on the current device.

[0004] Regarding the above-mentioned related technologies, when performing discharge detection on a device, the device to be detected is usually placed on the ground, so the relevant technicians can place the detection sensor on the surface of the device to perform discharge detection. When the part to be detected is vertical or high, the technician is required to hold the end side of the handheld detection sensor so that the sensor is close to the part to be detected, thereby realizing discharge detection of the device. This detection method is cumbersome to operate. When switching channels and detecting, it is necessary to adjust parameters at all times to filter out the influence of clutter. Therefore, at least two people are required to perform the detection, one to fix the sensor and the other to record the results and adjust parameters. The detection efficiency is low, so it needs to be improved. Summary of the invention

[0005] In order to improve the detection efficiency of discharge detection, reduce labor consumption, and improve the operability of the discharge detection device, the present application provides a portable partial discharge detection device.

[0006] The portable partial discharge detection device provided in this application adopts the following technical solution: A portable partial discharge detection device comprises a device body, a display arranged on the device body and a signal hole opened on the device body, wherein a signal line is also stored in the device body, and the signal line is electrically connected to the device body through the signal hole, and a storage assembly for storing the signal line is also provided in the device body, and a fixing rod is also stored on the device body, wherein the fixing rod is hollow, and the signal line is arranged through the fixing rod, and the fixing rod is detachably arranged on the device body, and an adsorption piece is arranged at one end of the fixing rod away from the device body, and one end of the signal line is connected to a detection sensor, and the adsorption piece is detachably arranged on the fixing rod, and the adsorption piece is adsorbed and connected to the surface of the device to be detected; The storage assembly includes a storage tray rotatably disposed in the device body and a locking member for locking the storage tray, the storage tray is provided with a receiving groove, and the signal line is arranged around the receiving groove; The adsorption component includes an adsorption block, which is rotatably connected to a clamping block, the clamping block is in contact with the outer surface of the detection device, and the adsorption block is also provided with a suction cup, the suction cup is in contact with the outer surface of the detection device, a negative pressure block is slidably arranged in the suction cup, the negative pressure block slides toward / away from the detection device, and the adsorption block is also provided with a synchronization component for synchronously adjusting the clamping block and the negative pressure block.

[0007] By adopting the above technical solution, when performing partial discharge detection on the device to be detected, the technician first unlocks the storage tray and takes out the fixing rod from the device body. At this time, the signal line is unwound from the receiving groove on the storage tray. At this time, the technician first fixes the adsorption block to the fixing rod and then presses the adsorption block against the surface of the device to be detected. At this time, the suction cup fits the surface of the detection device, and then adjusts the negative pressure block and the clamping block on the adsorption block through the set synchronization parts, so that the negative pressure block slides in the direction away from the detection device. At this time, the negative pressure block generates negative pressure in the suction cup, so that the suction cup stably adsorbs the surface of the detection device, thereby making the detection sensor stably fit the surface of the device to be detected.

[0008] The clamping block provided at the same time rotates toward the surface of the device to be detected under the action of the synchronization member, so that the clamping block clamps the device to be detected. By fixing the clamping block and the suction cup, the detection sensor and the device to be detected are stably fitted, thereby realizing stable partial discharge detection of the device to be detected.

[0009] After the detection sensor is fixed by the clamping block and the suction cup, data can be recorded without additional operation, thereby reducing the number of personnel required for each partial discharge detection and improving detection efficiency.

[0010] Optionally, the synchronous part includes a synchronous rack slidably arranged in the adsorption block, a synchronous gear is provided at the rotating shaft of the clamping block, the synchronous rack is meshed with the synchronous gear, and the synchronous rack is connected to the negative pressure block, and a sliding part for slidingly adjusting the synchronous rack is also provided on the adsorption block.

[0011] By adopting the above technical solution, when the technician needs to fix the detection sensor, the technician uses the sliding part to slide and adjust the synchronous rack. When the synchronous rack slides, it drives the synchronous gear to rotate, thereby driving the clamping block to rotate. Since the synchronous rack is connected to the negative pressure block, the negative pressure block is driven to slide during the sliding of the synchronous rack, thereby realizing the negative pressure in the suction cup. The movement of the negative pressure block and the clamping block is driven simultaneously by a sliding rack, which is simple to operate and has high adjustment efficiency.

[0012] Optionally, the sliding member includes an adjusting ring rotatably set on the adsorption block, the negative pressure block is rotatably connected to an adjusting rod, the adjusting ring is threadably adapted to the adjusting rod, the adjusting ring is provided with an installation groove for inserting a fixed rod, and the adjusting ring is also provided with a limiting structure for limiting the relative rotation of the fixed rod and the adjusting ring.

[0013] By adopting the above technical solution, since the adsorption block needs to fit well with the equipment to be tested, when the test equipment is high, such as boiler flue gas ducts, overhead equipment and other high equipment, it is not convenient to directly adjust the sliding rack. Therefore, the fixed rod is inserted into the installation groove, and under the action of the limiting structure, the fixed rod drives the adjustment ring to rotate. When the adjustment ring and the adjustment rod thread are adapted, the adjustment ring rotates, thereby driving the adjustment rod to rise and fall, and then the adjustment rod drives the simultaneous moving rack and the negative pressure block to rise and fall, so as to adjust the negative pressure block and the clamping block. The fixed rod is convenient for relevant technical personnel to operate when performing discharge detection at high places, thereby improving the adaptability of the device.

[0014] Optionally, the limiting structure includes a limiting block arranged on the end side of the fixed rod and a limiting groove opened on the inner bottom wall of the installation groove, the limiting block is snap-fitted with the limiting groove, and a first magnet is fixedly connected to the end side of the fixed rod, a second magnet is arranged on the inner bottom wall of the limiting groove, and the first magnet is magnetically connected to the second magnet.

[0015] By adopting the above technical solution, when the technician rotates and adjusts the adjustment ring through the fixed rod, the technician inserts the limit block on the end side of the fixed rod into the limit groove. At this time, under the action of the first magnet and the second magnet, it remains stable. Then the technician rotates the fixed rod, and the fixed rod drives the adjustment ring to rotate, thereby driving the sliding of the synchronous rack and the negative pressure block, thereby realizing the clamping of the clamping block and the adsorption of the suction cup, and realizing local discharge detection of detection equipment that is difficult to detect at high places.

[0016] At the same time, after the adsorption block is fixed, the technician can use the first magnet and the second magnet to retract the fixing rod into the device body or directly hang it under the adsorption block for warning according to actual conditions.

[0017] Optionally, the fixing rod is hollow, and the signal line is embedded in the fixing rod, and an angle adjustment component for adjusting the rotation angle of the signal line is also provided on the fixing rod; The fixing rod is divided into a first fixing rod and a second fixing rod, and the angle adjustment assembly includes an adjustment plate arranged on the end sides of the first fixing rod and the second fixing rod close to each other, and the adjustment plates are provided with two, and the two adjustment plates correspond to the first fixing rod and the second fixing rod respectively, and a first limiting rod is slidably arranged on the adjustment plate on the first fixing rod, and one end of the first limiting rod slides through the adjustment plate and is rotatably connected to the second limiting rod, and a first limiting plate is also arranged on the first fixing rod, and the second limiting rod slides through the first limiting plate; A first limiting rod is also slidably provided on the adjustment plate on the second fixed rod, one end of the first limiting rod that slides through the adjustment plate is also rotatably connected to a second limiting rod, a second limiting plate is also provided on the second fixed rod, the second limiting rod slides through the second limiting plate, and the first limiting plate is fixedly connected to the second limiting plate; The fixing rod is also provided with a stabilizing member for keeping the first fixing rod and the second fixing rod coaxial.

[0018] By adopting the above technical solution, when performing partial discharge detection, the bending of the signal line will affect the cross-sectional area of ​​the conductor, thereby increasing the resistance, and the signal will gradually weaken during the transmission process, causing signal attenuation. In addition, when the signal line is bent, noise and interference may be introduced, thereby causing signal distortion. The distorted signal cannot accurately reflect the actual situation of the partial discharge, thereby affecting the accuracy of the detection result. The larger the bending angle of the signal line, the more obvious the distortion effect of the signal. Therefore, during the detection process, the straight section of the signal line should be kept as much as possible, and the bending angle and the number of bending times should be reduced. By setting the first fixing rod and the second fixing rod, when the signal line needs to be bent in some complex environments, the angle of the signal line is adjusted. By setting the first limiting rod and the second limiting rod between the first fixing rod and the second fixing rod, the angle between the first limiting rod and the second limiting rod can be adjusted, thereby realizing the angle bending of the signal line. At the same time, by the above setting, the angle of the direct bending of the signal line is reduced, thereby reducing the wear of the signal line and the interface when the signal line is directly bent and the signal noise generated when the signal line is directly bent.

[0019] At the same time, when partial discharge detection of overhead lines is required in some narrow corners, it is not easy for the technician's hands to enter the narrow corners to rotate the fixed rod. At this time, the technician bends the first fixed rod and the second fixed rod into an angle that is convenient for the technician to rotate. At this time, the technician rotates the first fixed rod, which drives the first limit rod to slide and rotate on the adjustment plate. Since the first fixed rod is rotatably connected to the second fixed rod, the second fixed rod is driven to rotate when the first fixed rod rotates. Therefore, in a narrow space, the relevant technician can directly rotate the first fixed rod to drive the second fixed rod to rotate, thereby realizing the sliding adjustment of the negative pressure block and the synchronous rack, and realizing stable partial discharge detection of overhead lines in narrow corners.

[0020] When storing the fixing rods, if the first fixing rod and the second fixing rod remain movable, it is not convenient to store them, and it is not convenient to take the fixing rods out of the equipment body when taking them out. By setting the stabilizing member, when performing partial discharge detection, the technician can make the first fixing rod and the second fixing rod coaxial through the stabilizing member, thereby facilitating the relevant technicians to take out the storage box of the fixing rods.

[0021] Optionally, the stabilizing member includes a stabilizing sleeve slidably disposed on the first fixed rod, the stabilizing sleeve movably disposed on the second fixed rod, the stabilizing sleeve movably covers the angle adjustment component, and the second fixed rod is also provided with a locking member for limiting the position of the stabilizing sleeve.

[0022] By adopting the above technical solution, when it is necessary to keep the first fixed rod and the second fixed rod coaxial, the technician slides the stabilizing sleeve so that the stabilizing sleeve stably covers the connecting part of the first fixed rod and the second fixed rod, thereby making it difficult for the first fixed rod and the second fixed rod to rotate at an angle, thereby achieving the coaxiality of the first fixed rod and the second fixed rod and facilitating the storage of the fixed rods.

[0023] At the same time, the position of the stabilizing sleeve is limited by the provided locking piece, so that the stabilizing sleeve stably locks the positions of the first fixing rod and the second fixing rod.

[0024] Optionally, an adjustment groove is provided on the second fixing rod, and the locking member includes a locking block elastically slidably arranged in the adjustment groove. A locking groove is provided on the stabilizing sleeve, and the locking block movably protrudes from the adjustment groove and is arranged through the locking groove. The side of the locking block close to the first fixing rod is inclined, and the inclined side of the locking block movably fits and presses against the end side of the stabilizing sleeve.

[0025] By adopting the above technical solution, when the technician slides the stabilizing sleeve, the stabilizing sleeve presses against the inclined side of the locking block, and under the action of the elastic compression force, the locking block sinks into the adjusting groove until the stabilizing sleeve slides to the position corresponding to the locking groove and the adjusting groove. At this time, the locking block protrudes from the locking groove under the action of the elastic restoring force, and under the stable limiting of the locking block, the stabilizing sleeve is not easy to slide in the direction away from the second fixed rod, thereby realizing the stable limiting of the first fixed rod and the second fixed rod by the stabilizing sleeve, so that the first fixed rod and the second fixed rod remain coaxial, thereby facilitating the storage of the fixed rods.

[0026] Optionally, a protective tube is rotatably disposed inside the fixing rod, the protective tube is made of a soft material, and the signal line is penetrated and disposed inside the protective tube.

[0027] By adopting the above technical solution, by rotating the protective tube and setting the protective tube to be a soft material, when the technician rotates the first fixed rod and the human fixed rod, it is not easy to drive the protective tube to rotate. Therefore, when the adjusting rod is raised or lowered, the rotation of the fixed rod is not easy to drive the rotation of the signal line, thereby reducing the torsion of the signal line and improving the accuracy of partial discharge detection.

[0028] Optionally, a clamping roller is provided in the signal hole, and two groups of the clamping rollers are provided, the two groups of the clamping rollers are arranged opposite to each other, the two groups of the clamping rollers movably clamp and clamp the signal line, and an adjusting member for adjusting the distance between the two groups of the clamping rollers is provided in the device body; When the fixing rod is stored in the device body, the adjusting member adjusts the distance between the two groups of the pressing rollers to be larger than the diameter of the signal line; When the fixing rod is separated from the device body, the adjusting member adjusts the distance between the two groups of the abutting rollers to be smaller than the diameter of the signal line.

[0029] By adopting the above technical solution, when the signal line is taken for partial discharge detection, it is necessary to reduce the adhesion of dust or debris on the surface of the signal line, thereby reducing signal distortion and improving the accuracy of partial discharge detection.

[0030] At the same time, when no partial discharge detection is performed, if the pressing roller is always kept in close contact with the signal line, the signal line is easily deformed, thereby affecting the accuracy of partial discharge detection of the signal line. Therefore, when no detection is performed, the pressing roller is adjusted by the adjusting member to loosen the signal line and increase the service life of the signal line. At the same time, after the fixing rod is detached from the equipment body, the signal line is further made less likely to fluctuate, thereby reducing signal fluctuations during partial discharge detection and improving the accuracy of partial discharge detection.

[0031] Optionally, a group of the clamping rollers are slidably disposed in the device body, and the adjusting member includes an adjusting block connected to the rotating shaft of the clamping roller and slidably disposed in the device body, one end of the adjusting block protrudes from the inner bottom wall of the signal hole and is inclined, and the adjusting block is elastically disposed in the device body, and the inclined side of the adjusting block is movably fitted with the end side of the fixing rod.

[0032] By adopting the above technical solution, when the fixed rod is inserted into the signal hole, the fixed rod pressing adjustment block slides so that the distance between the pressing roller and another pressing roller is larger than the diameter of the signal line, thereby achieving the relaxation of the signal line. When the fixed rod is separated from the signal hole, the adjustment block adjusts the pressing roller under the action of the elastic restoring force, thereby achieving the distance between the two pressing rollers smaller than the diameter of the signal line, thereby achieving the pressing clamping of the signal line.

[0033] In summary, the present application includes at least one of the following beneficial technical effects: 1. By rotating the storage tray, the locking member for locking the storage tray, the adsorption block, the suction cup and the clamping block, when performing partial discharge detection on overhead lines at high places and equipment to be detected, the detection sensor is fixed by the suction cup and the clamping block, thereby reducing the manpower consumption during partial discharge detection and improving the efficiency of partial discharge detection; 2. Through the synchronous rack, synchronous gear, adjustment rod and adjustment ring, when it is necessary to conduct partial discharge detection at a high place, the technician can rotate and adjust the adjustment ring through the fixed rod to achieve; 3. By setting the adjustment plate, the first limit rod and the second limit rod, when performing partial discharge detection on the detection equipment at high places or in a narrow space, the noise and service life problems caused by the excessive direct bending angle of the signal line can be reduced through the bendable angle between the first fixed rod and the second fixed rod. At the same time, when it is inconvenient to adjust the fixed rod in a narrow space, the technician adjusts the angle between the first fixed rod and the second fixed rod, and drives the second fixed rod to rotate by rotating the first fixed rod, thereby realizing the sliding adjustment of the negative pressure block and the synchronous rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the connection structure of a portable partial discharge detection device in the present application for detecting a high-place detection device; Figure 3 It is a schematic diagram of the connection structure between the adsorption block and the detection equipment; Figure 4 is a schematic diagram of the connection structure of the angle adjustment component; Figure 5It is a schematic diagram of the connection structure in another state; Figure 6 It is a schematic diagram of the connection structure of the adjusting part.

[0035] Figure numerals: 1, device body; 11, signal hole; 12, signal line; 13, detection sensor; 14, interface; 15, detection device; 2, storage assembly; 21, fixing rod; 22, storage tray; 221, torsion spring; 23, receiving groove; 24, adsorption member; 241, adsorption block; 242, suction cup; 243, negative pressure block; 244, clamping block; 25, synchronization member; 251, synchronization rack; 252, synchronization gear; 26, sliding member; 261, adjustment ring; 262, adjustment rod; 27, limit structure; 271. Limit block; 272. Limit groove; 273. First magnet; 274. Second magnet; 3. Angle adjustment assembly; 31. First fixing rod; 32. Second fixing rod; 33. Adjustment plate; 34. First limit rod; 35. Second limit rod; 36. First limit plate; 37. Second limit plate; 38. Stabilizing member; 381. Stabilizing sleeve; 382. Adjustment groove; 383. Locking groove; 384. Locking block; 39. Protective tube; 4. Adjustment member; 41. Adjustment block; 42. Adjustment spring; 43. Clamping roller. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-5 This application is described in further detail.

[0037] The present application embodiment discloses a portable partial discharge detection device. Figure 1 A portable partial discharge detection device comprises a device body 1, a display arranged on the device body 1 and a signal hole 11 opened on the device body 1, the device body 1 is provided with a plurality of connectors, the device body 1 also contains a signal line 12, the signal line 12 is movably plugged into the connector and electrically connected to the device body 1, and the end of the signal line 12 away from the plugging of the device body 1 is connected with a detection sensor 13, the detection sensor 13 is fitted with a device to be detected 15, the signal line 12 is electrically connected to the device body 1 through the signal hole 11, and the device body 1 is also provided with a There is a storage component 2 for storing the signal line 12, and a fixing rod 21 is also stored on the device body 1. The fixing rod 21 is movably arranged in the device body 1 through the signal hole 11. The fixing rod 21 is hollow, and the signal line 12 passes through the fixing rod 21. The fixing rod 21 is detachably arranged on the device body 1, and an adsorption part 24 is provided at one end of the fixing rod 21 away from the device body 1. One end of the signal line 12 is connected to the detection sensor 13. The adsorption part 24 includes a detachable part arranged on the fixing rod 21, and the adsorption part 24 is adsorbed and connected to the surface of the device 15 to be detected.

[0038] The storage assembly 2 includes a storage tray 22 rotatably disposed in the device body 1 and a locking member for locking the storage tray 22 . The locking member is a torsion spring 221 disposed at the rotating shaft of the storage tray 22 . A receiving groove 23 is provided on the storage tray 22 , and the signal line 12 is arranged around the receiving groove 23 .

[0039] The adsorption component 24 includes an adsorption block 241, which is rotatably connected to a clamping block 244, which fits the outer surface of the detection device 15, and the adsorption block 241 is also provided with a suction cup 242, which fits the outer surface of the detection device 15, and a negative pressure block 243 is slidably arranged in the suction cup 242, which slides toward / away from the detection device 15. The adsorption block 241 is also provided with a synchronization component 25 for synchronously adjusting the clamping block 244 and the negative pressure block 243.

[0040] When performing partial discharge detection on the device to be detected 15, the technician first unlocks the storage tray 22 and takes out the fixing rod 21 from the device body 1. At this time, the signal line 12 is unwound from the receiving groove 23 on the storage tray 22. At this time, the technician first fixes the adsorption block 241 to the fixing rod 21, and then presses the adsorption block 241 against the surface of the device to be detected 15. At this time, the suction cup 242 is in contact with the surface of the detection device 15, and then adjusts the negative pressure block 243 and the clamping block 244 on the adsorption block 241 through the set synchronization part 25, so that the negative pressure block 243 slides in the direction away from the detection device 15. At this time, the negative pressure block 243 generates negative pressure in the suction cup 242, so that the suction cup 242 stably adsorbs the surface of the detection device 15, thereby making the detection sensor 13 stably fit the surface of the device to be detected 15.

[0041] The clamping block 244 provided at the same time rotates toward the surface of the device to be detected 15 under the action of the synchronization member 25, so that the clamping block 244 clamps the device to be detected 15, and through the fixation of the clamping block 244 and the fixation of the suction cup 242, the detection sensor 13 and the device to be detected 15 are stably fitted, thereby realizing stable partial discharge detection of the device to be detected 15.

[0042] After the detection sensor 13 is fixed by the clamping block 244 and the suction cup 242, data can be recorded without additional operations, thereby reducing the number of personnel required for each partial discharge detection, thereby improving detection efficiency.

[0043] The synchronous member 25 includes a synchronous rack 251 slidably arranged in the adsorption block 241, the sliding direction of the synchronous rack 251 is consistent with the height direction of the adsorption block 241, the rotation axis of the clamping block 244 is perpendicular to the sliding direction of the synchronous rack 251, and a synchronous gear 252 is provided at the rotating shaft of the clamping block 244. The synchronous rack 251 is meshed with the synchronous gear 252, and the synchronous rack 251 is connected to the negative pressure block 243, and a sliding member 26 for slidingly adjusting the synchronous rack 251 is also provided on the adsorption block 241.

[0044] Reference Figure 1 and Figure 2 The sliding member 26 includes an adjusting ring 261 rotatably arranged on the adsorption block 241, the rotation axis of the adjusting ring 261 is consistent with the height direction of the adsorption block 241, an adjusting rod 262 is provided on the negative pressure block 243, the adjusting ring 261 is threadedly adapted with the adjusting rod 262, an installation groove for inserting the fixing rod 21 is opened on the adjusting ring 261, and a limiting structure 27 for limiting the relative rotation between the fixing rod 21 and the adjusting ring 261 is also provided on the adjusting ring 261.

[0045] Since the adsorption block 241 needs to fit with the device to be tested 15, when the test device 15 is relatively high, such as a boiler flue gas duct, overhead equipment or other relatively high equipment, it is not convenient to directly adjust the sliding rack. Therefore, the fixed rod 21 is inserted into the installation groove. Under the action of the limiting structure 27, the fixed rod 21 drives the adjustment ring 261 to rotate, thereby driving the adjustment rod 262 to rise and fall. When the synchronous rack 251 slides, it drives the synchronous gear 252 to rotate, thereby driving the clamping block 244 to rotate. Since the synchronous rack 251 is connected to the negative pressure block 243, during the sliding process of the synchronous rack 251, it drives the negative pressure block 243 to slide, thereby realizing the negative pressure in the suction cup 242. The movement of the negative pressure block 243 and the clamping block 244 is simultaneously driven by an adjustment ring 261. The operation is simple and the adjustment efficiency is high.

[0046] The limiting structure 27 includes a limiting block 271 arranged on the end side of the fixing rod 21 and a limiting groove 272 opened on the inner bottom wall of the installation groove. There are multiple limiting grooves 272, and multiple limiting grooves 272 are arranged at intervals along the circumference direction of the installation groove. There are also multiple limiting blocks 271. The multiple limiting blocks 271 correspond to the multiple limiting grooves 272 one by one and are snap-fitted. The end side of the fixing rod 21 is fixedly connected with a first magnet 273, and the inner bottom wall of the limiting groove 272 is provided with a second magnet 274. The first magnet 273 and the second magnet 274 are magnetically connected.

[0047] When the technician rotates and adjusts the adjustment ring 261 through the fixing rod 21, the technician inserts the limit block 271 on the end side of the fixing rod 21 into the limit groove 272. At this time, under the action of the first magnet 273 and the second magnet 274, it remains stable. Then the technician rotates the fixing rod 21, and the fixing rod 21 drives the adjustment ring 261 to rotate, thereby driving the sliding of the synchronous rack 251 and the negative pressure block 243, thereby realizing the clamping of the clamping block 244 and the adsorption of the suction cup 242, so as to realize local discharge detection of the detection equipment 15 that is difficult to detect at a high place.

[0048] At the same time, after the adsorption block 241 is fixed, the technician can use the first magnet 273 and the second magnet 274 to store the fixing rod 21 back into the device body 1 or directly hang it under the adsorption block 241 for warning according to actual conditions.

[0049] Reference Figure 3 The fixing rod 21 is hollow, and the signal line 12 is embedded in the fixing rod 21 . The fixing rod 21 is also provided with an angle adjustment component 3 for adjusting the rotation angle of the signal line 12 .

[0050] The fixing rod 21 is divided into a first fixing rod 31 and a second fixing rod 32 . There are two first fixing rods 31 and one second fixing rod 32 . The first fixing rod 31 , the second fixing rod 32 and the first fixing rod 31 are connected in sequence.

[0051] The angle adjustment assembly 3 includes an adjustment plate 33 arranged on the end side where the first fixing rod 31 and the second fixing rod 32 are close to each other. There are two adjustment plates 33, and the two adjustment plates 33 correspond to the first fixing rod 31 and the second fixing rod 32 respectively. A first limiting rod 34 is slidably arranged on the adjustment plate 33 on the first fixing rod 31. The first limiting rod 34 slides through one end of the adjustment plate 33 and is rotatably connected to the second limiting rod 35. There are multiple groups of first limiting rods 34 and second limiting rods 35, and the multiple groups of first limiting rods 34 are evenly spaced along the circumference direction of the adjustment plate 33. The multiple groups of second limiting rods 35 correspond to the multiple groups of first limiting rods 34 one by one. A first limiting plate 36 is also provided on the first fixing rod 31, and the second limiting rod 35 slides through the first limiting plate 36. A first limiting rod 34 is also slidably provided on the adjustment plate 33 on the second fixed rod 32. One end of the first limiting rod 34 that slides through the adjustment plate 33 is also rotatably connected to the second limiting rod 35. A second limiting plate 37 is also provided on the second fixed rod 32. The second limiting rod 35 slides through the second limiting plate 37, and the first limiting plate 36 is fixedly connected to the second limiting plate 37.

[0052] During partial discharge detection, the bending of the signal line 12 will affect the cross-sectional area of ​​the conductor, thereby increasing the resistance. The signal will gradually weaken during the transmission process, causing signal attenuation. The bending of the signal line 12 may introduce noise and interference, thereby causing signal distortion. The distorted signal cannot accurately reflect the actual situation of partial discharge, thereby affecting the accuracy of the detection result. The greater the bending angle of the signal line 12, the more obvious the distortion effect of the signal. Therefore, during the detection process, the straight section of the signal line 12 should be kept as much as possible, and the bending angle and the number of bending times should be reduced. By setting the first fixing rod 31 , the second fixing rod 32, when the signal line 12 needs to be bent in some complex environments, the angle of the signal line 12 is adjusted, and the first limiting rod 34 and the second limiting rod 35 are arranged between the first fixing rod 31 and the second fixing rod 32. The angle between the first limiting rod 34 and the second limiting rod 35 is adjustable, thereby realizing the bending of the signal line 12. At the same time, through the above arrangement, the angle of direct bending of the signal line 12 is reduced, thereby reducing the wear on the interface 14 when the signal line 12 is directly bent and the signal noise generated when the signal line 12 is directly bent.

[0053] At the same time, when partial discharge detection of overhead lines is required in some narrow corners, it is not easy for the technician's hand to enter the narrow corner to rotate the fixed rod 21. At this time, the technician bends the first fixed rod 31 and the second fixed rod 32 into an angle that is convenient for the technician to rotate. At this time, the technician rotates the first fixed rod 31, which drives the first limit rod 34 to slide and rotate on the adjustment plate 33. Since the first fixed rod 31 is rotatably connected to the second fixed rod 32, the second fixed rod 32 is driven to rotate when the first fixed rod 31 rotates. Therefore, in a narrow space, the relevant technician can directly rotate the first fixed rod 31 to drive the second fixed rod 32 to rotate, thereby realizing the sliding adjustment of the negative pressure block 243 and the synchronous rack, and realizing stable partial discharge detection of overhead lines in narrow corners.

[0054] When the fixing rod 21 is stored, if the first fixing rod 31 and the second fixing rod 32 remain movable, it is not convenient to store, and it is not convenient to take the fixing rod 21 out of the device body 1 when taking it. In order to solve this problem, the fixing rod 21 is further provided with a stabilizing member 38 for keeping the first fixing rod 31 and the second fixing rod 32 coaxial. Figure 3The stabilizing member 38 includes a stabilizing sleeve 381 slidably arranged on the first fixing rod 31, and the stabilizing sleeve 381 is movably sleeved on the second fixing rod 32. The stabilizing sleeve 381 movably covers the angle adjustment component 3. At the same time, in order to achieve stable adjustment of the stabilizing sleeve 381, the second fixing rod 32 is also provided with a locking member for limiting the position of the stabilizing sleeve 381. The second fixing rod 32 is provided with an adjustment groove 382, ​​and the locking member includes a locking block 384 elastically slidably arranged in the adjustment groove 382. The stabilizing sleeve 381 is provided with a locking groove 383. The locking block 384 movably protrudes from the adjustment groove 382 and passes through the locking groove 383. The locking block 384 is inclined on the side close to the first fixing rod 31, and the inclined side of the locking block 384 is movably fitted and tightly pressed against the end side of the stabilizing sleeve 381.

[0055] When the technician slides the stabilizing sleeve 381, the stabilizing sleeve 381 is pressed against the inclined side of the locking block 384, and under the action of the elastic compression force, the locking block 384 is immersed in the adjustment groove 382 until the stabilizing sleeve 381 slides to the position corresponding to the locking groove 383 and the adjustment groove 382. At this time, the locking block 384 protrudes from the locking groove 383 under the action of the elastic restoring force, so that the stabilizing sleeve 381 stably covers the connecting part of the first fixing rod 31 and the second fixing rod 32, so that the first fixing rod 31 and the second fixing rod 32 are not easily rotated at an angle, thereby realizing the coaxiality of the first fixing rod 31 and the second fixing rod 32. Under the stable limiting of the locking block 384, the stabilizing sleeve 381 is not easy to slide in the direction away from the second fixing rod 32, thereby realizing the stable limiting of the first fixing rod 31 and the second fixing rod 32 by the stabilizing sleeve 381, so that the first fixing rod 31 and the second fixing rod 32 remain coaxial, thereby facilitating the storage of the fixing rod 21.

[0056] A protective tube 39 is rotatably arranged inside the fixed rod 21. The protective tube 39 is made of a soft material. The signal line 12 is penetrated through the protective tube 39. The rotatable protective tube 39 is made of a soft material. Therefore, when the technician rotates the first fixed rod 31 and the fixed rod 21, it is not easy to drive the protective tube 39 to rotate. Therefore, when the adjusting rod 262 is raised or lowered, the rotation of the fixed rod 21 is not easy to drive the rotation of the signal line 12, thereby reducing the torsion of the signal line 12 and improving the accuracy of partial discharge detection.

[0057] Since impurities or dust on the signal line 12 may affect the accuracy of the signal line 12 during transmission, in order to further improve the accuracy of the partial discharge detection result, a clamping roller 43 is provided in the signal hole 11, and two groups of clamping rollers 43 are provided. The two groups of clamping rollers 43 are arranged relatively, and one group of clamping rollers 43 is slidably arranged in the device body 1. The two groups of clamping rollers 43 flexibly clamp and clamp the signal line 12, and an adjusting member 4 for adjusting the distance between the two groups of clamping rollers 43 is provided in the device body 1; Reference Figure 6 The adjusting member 4 includes an adjusting block 41 which is connected to the rotating shaft of the pressing roller 43 and is slidably arranged in the device body 1. One end of the adjusting block 41 protrudes from the inner bottom wall of the signal hole 11 and is inclined. The adjusting block 41 is elastically arranged in the device body 1. An adjusting spring 42 is fixedly connected to the adjusting block 41. The other end of the adjusting spring 42 is fixedly connected to the device body 1. The inclined side of the adjusting block 41 is movably fitted with the end side of the fixing rod 21.

[0058] When partial discharge detection is not performed, if the pressing roller 43 is always kept in contact with the signal line 12, the signal line 12 is easily deformed, thereby affecting the accuracy of partial discharge detection of the signal line 12. Therefore, when no detection is performed, the pressing roller 43 is adjusted by the adjusting member 4 to loosen the signal line 12 and increase the service life of the signal line 12. At the same time, after the fixing rod 21 is detached from the device body 1, the signal line 12 is further less likely to fluctuate, thereby reducing signal fluctuations during partial discharge detection and improving the accuracy of partial discharge detection.

[0059] When the fixed rod 21 is inserted into the signal hole 11, the fixed rod 21 presses against the adjusting block 41 to slide so that the distance between the pressing roller 43 and another pressing roller 43 is larger than the diameter of the signal line 12, thereby achieving the relaxation of the signal line 12. When the fixed rod 21 is disengaged from the signal hole 11, the adjusting block 41 adjusts the pressing roller 43 under the action of the elastic restoring force, so that the distance between the two pressing rollers 43 is smaller than the diameter of the signal line 12, thereby achieving the pressing clamping of the signal line 12.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable partial discharge detection device, comprising a device body (1), a display arranged on the device body (1), and a signal hole (11) opened on the device body (1), wherein a signal line (12) is also accommodated in the device body (1), and the signal line (12) is electrically connected to the device body (1) through the signal hole (11), characterized in that: The device body (1) is further provided with a storage component (2) for storing the signal line (12); the device body (1) is further provided with a fixing rod (21); the fixing rod (21) is hollow; the signal line (12) passes through the fixing rod (21); the fixing rod (21) is detachably provided on the device body (1); an adsorption component (24) is provided at one end of the fixing rod (21) away from the device body (1); one end of the signal line (12) is connected to a detection sensor (13); the adsorption component (24) comprises a detachable component provided on the fixing rod (21); and the adsorption component (24) is adsorbed and connected to the surface of the device (15) to be detected; The storage assembly (2) comprises a storage tray (22) rotatably arranged in the device body (1) and a locking member for locking the storage tray (22); a receiving groove (23) is provided on the storage tray (22); and the signal line (12) is arranged around the receiving groove (23); The adsorption component (24) comprises an adsorption block (241), the adsorption block (241) is rotatably connected to a clamping block (244), the clamping block (244) is in contact with the outer surface of the detection device (15), and the adsorption block (241) is also provided with a suction cup (242), the suction cup (242) is in contact with the outer surface of the detection device (15), a negative pressure block (243) is slidably arranged inside the suction cup (242), the negative pressure block (243) slides in a direction toward / away from the detection device (15), and the adsorption block (241) is also provided with a synchronization component (25) for synchronously adjusting the clamping block (244) and the negative pressure block (243).

2. A portable partial discharge detection device according to claim 1, characterized in that: The synchronous member (25) comprises a synchronous rack (251) slidably arranged in the adsorption block (241); a synchronous gear (252) is provided at the rotating shaft of the clamping block (244); the synchronous rack (251) is meshed with the synchronous gear (252); the synchronous rack (251) is connected to the negative pressure block (243); and a sliding member (26) for slidingly adjusting the synchronous rack (251) is also provided on the adsorption block (241).

3. A portable partial discharge detection device according to claim 2, characterized in that: The sliding member (26) comprises an adjusting ring (261) rotatably arranged on the adsorption block (241); an adjusting rod (262) is provided on the negative pressure block (243); the adjusting ring (261) is threadably adapted to the adjusting rod (262); a mounting groove for inserting the fixing rod (21) is provided on the adjusting ring (261); and a limiting structure (27) for limiting relative rotation between the fixing rod (21) and the adjusting ring (261) is also provided on the adjusting ring (261).

4. A portable partial discharge detection device according to claim 3, characterized in that: The limiting structure (27) comprises a limiting block (271) arranged on the end side of the fixing rod (21) and a limiting groove (272) opened on the inner bottom wall of the installation groove, the limiting block (271) is snap-fitted with the limiting groove (272), and a first magnet (273) is fixedly connected to the end side of the fixing rod (21), a second magnet (274) is arranged on the inner bottom wall of the limiting groove (272), and the first magnet (273) and the second magnet (274) are magnetically connected.

5. A portable partial discharge detection device according to claim 4, characterized in that: The fixing rod (21) is hollow, and the signal line (12) is embedded in the fixing rod (21), and an angle adjustment component (3) for adjusting the rotation angle of the signal line (12) is also provided on the fixing rod (21); The fixing rod (21) is divided into a first fixing rod (31) and a second fixing rod (32); the angle adjustment assembly (3) comprises an adjustment plate (33) provided on the end sides of the first fixing rod (31) and the second fixing rod (32) close to each other; two adjustment plates (33) are provided, and the two adjustment plates (33) correspond to the first fixing rod (31) and the second fixing rod (32) one by one; a first limiting rod (34) is provided on the adjustment plate (33) on the first fixing rod (31) and slides thereon; the first limiting rod (34) One end of the rod (34) slides through the adjustment plate (33) and is rotatably connected to a second limiting rod (35); a plurality of the first limiting rods (34) and the second limiting rods (35) are provided, and the plurality of the first limiting rods (34) are evenly spaced and arranged along the circumference direction of the adjustment plate (33); the plurality of the second limiting rods (35) correspond to the plurality of the first limiting rods (34) in a one-to-one manner; a first limiting plate (36) is further provided on the first fixing rod (31); and the second limiting rods (35) slide through the first limiting plate (36) and are arranged; A first limiting rod (34) is also slidably provided on the adjustment plate (33) on the second fixing rod (32); one end of the first limiting rod (34) slidingly passing through the adjustment plate (33) is also rotatably connected to a second limiting rod (35); a second limiting plate (37) is also provided on the second fixing rod (32); the second limiting rod (35) slidingly passes through the second limiting plate (37); and the first limiting plate (36) is fixedly connected to the second limiting plate (37); The fixing rod (21) is also provided with a stabilizing member (38) for keeping the first fixing rod (31) and the second fixing rod (32) coaxial.

6. A portable partial discharge detection device according to claim 5, characterized in that: The stabilizing member (38) comprises a stabilizing sleeve (381) slidably arranged on the first fixing rod (31), the stabilizing sleeve (381) being movably arranged on the second fixing rod (32), the stabilizing sleeve (381) movably covering the angle adjustment assembly (3), and the second fixing rod (32) is also provided with a locking member for limiting the position of the stabilizing sleeve (381).

7. A portable partial discharge detection device according to claim 6, characterized in that: The second fixing rod (32) is provided with an adjustment groove (382), the locking member comprises a locking block (384) elastically slidably arranged in the adjustment groove (382), the stabilizing sleeve (381) is provided with a locking groove (383), the locking block (384) movably protrudes from the adjustment groove (382) and is arranged through the locking groove (383), and the side of the locking block (384) close to the first fixing rod (31) is inclined, and the inclined side of the locking block (384) is movably fitted and tightly pressed against the end side of the stabilizing sleeve (381).

8. A portable partial discharge detection device according to claim 7, characterized in that: A protective tube (39) is rotatably arranged inside the fixing rod (21); the protective tube (39) is made of a soft material, and the signal line (12) is arranged to penetrate inside the protective tube (39).

9. A portable partial discharge detection device according to claim 8, characterized in that: The signal hole (11) is provided with a clamping roller, and the clamping roller is provided with two groups, the two groups of the clamping rollers are arranged opposite to each other, and the two groups of the clamping rollers movably clamp and clamp the signal line (12), and the device body (1) is provided with an adjusting member (4) for adjusting the distance between the two groups of the clamping rollers; When the fixing rod (21) is stored in the device body (1), the adjusting member (4) adjusts the distance between the two groups of the abutting rollers to be greater than the diameter of the signal line (12); When the fixing rod (21) is detached from the device body (1), the adjusting member (4) adjusts the spacing between the two groups of the abutting rollers to be smaller than the diameter of the signal line (12).

10. A portable partial discharge detection device according to claim 9, characterized in that: A group of the abutting rollers are slidably arranged in the device body (1), and the adjusting member (4) includes an adjusting block (41) connected to the rotating shaft of the abutting roller and slidably arranged in the device body (1), one end of the adjusting block (41) protrudes from the inner bottom wall of the signal hole (11) and is inclined, and the adjusting block (41) is elastically arranged in the device body (1), and the inclined side of the adjusting block (41) is movably fitted with the end side of the fixing rod (21).

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