Partial discharge test device for dry-type transformer

Abstract

A dry-type transformer partial discharge test device provided by the present invention comprises a scissor lift, the top of the scissor lift is fixedly provided with a support table, the surface of the support table is provided with four groups of trapezoidal sliding grooves at intervals, the four groups of trapezoidal sliding grooves are arranged in a square shape, and two first mounting seats are symmetrically arranged above the support table. The bottom of each first installation seat is fixedly provided with a trapezoidal sliding block, the trapezoidal sliding blocks are in sliding connection with the trapezoidal sliding grooves, a second installation seat is arranged between the two first installation seats, the second installation seat is fixed to the supporting table, and the first installation seats and the second installation seat are each provided with a coupling capacitor. The problems that in the prior art, the positions of coupling capacitors of a transformer still need to be manually adjusted one by one, operation time consumption is long, large deviation of the distance between three electric heating couplers is possibly caused, and consequently the measurement result is possibly inaccurate are solved.

Description

Technical Field

[0001] The invention relates to the field of transformer testing, and in particular to a dry-type transformer partial discharge testing device. Background Art

[0002] Power transformers are hub equipment for power transmission and transformation in power systems and key equipment for electric energy conversion. They play an important role in power grids. The reliability of their operation is directly related to the safety and stability of power systems. Insulation failure is the main reason affecting the normal operation of power transformers, and partial discharge is the main cause of insulation failure and also the early manifestation of failure. Through the detection and analysis of partial discharge, early warning of failures can be given and they can be eliminated. The partial discharge test of dry-type transformers requires three-phase power supply and simultaneous measurement of the three phases. In the prior art, the test of partial discharge of transformers is mainly carried out by adjusting the three coupling capacitors installed on the test device to adapt to transformers of different models.

[0003] The existing test device still has a relatively simple adjustment method for the coupling capacitor. The structure that only sets the coupling capacitor to an adjustable position still needs to be adjusted manually one by one. Not only is the operation time-consuming, but it may also cause a large deviation in the spacing between the three electrothermal couplers, which may lead to inaccurate measurement results.

[0004] Therefore, it is necessary to provide a new dry-type transformer partial discharge test device to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a dry-type transformer partial discharge test device, which solves the problem that the position of the coupling capacitors of the transformer still needs to be manually adjusted one by one in the prior art, which not only takes a long time to operate, but also may cause a large deviation in the spacing between the three electrothermal couplers, which may lead to inaccurate measurement results.

[0006] The dry-type transformer partial discharge test device provided by the present invention comprises a scissor lift, a support platform is fixed on the top of the scissor lift, four groups of trapezoidal slide grooves are arranged at intervals on the surface of the support platform, and the four groups of trapezoidal slide grooves are arranged in a square shape, two first mounting seats are symmetrically arranged above the support platform, a trapezoidal slider is fixed on the bottom of the first mounting seat, and the trapezoidal slider is slidably connected to the trapezoidal slide groove;

[0007] A second mounting seat is arranged between the two first mounting seats, the second mounting seat is fixed on the support platform, and coupling capacitors are installed on both the first mounting seat and the second mounting seat.

[0008] In a preferred embodiment, two bidirectional lead screws are movably arranged on the support table through bearings, and both ends of the bidirectional lead screws are respectively located inside two adjacent sets of the trapezoidal chutes;

[0009] The bidirectional lead screw penetrates through the trapezoidal slider, and the bidirectional lead screw is in threaded connection with the trapezoidal slider.

[0010] In a preferred embodiment, one end of each of the two bidirectional lead screws penetrates through the support table and is provided with a first bevel gear. A first limit seat is arranged between the two first bevel gears. A transmission shaft penetrates through the first limit seat, and the transmission shaft is movably connected with the first limit seat through a bearing;

[0011] Two second bevel gears are installed on the transmission shaft at intervals, and the two second bevel gears are respectively meshed with the two first bevel gears. A servo motor is installed on the scissor lift, and the output end of the servo motor is connected with the bidirectional lead screw through a coupling.

[0012] In a preferred embodiment, a gantry is arranged directly above the scissor lift. An elliptical seat is fixed below the gantry through a connecting seat. An elliptical track is installed on the elliptical seat. Two rotating shafts are arranged on the elliptical seat at intervals. The bottom of the rotating shaft is movably connected with the elliptical seat through a bearing. Transmission sprockets are installed on both of the two rotating shafts, and a conveying chain is connected between the two transmission sprockets. Two moving seats are arranged at intervals on one side of the conveying chain. A C-shaped plate is fixed on one side of the moving seat, and the C-shaped plate is fixed on the conveying chain. A plurality of limit columns are fixed at the bottom of the moving seat, and the plurality of limit columns are symmetrically arranged on both sides of the elliptical track. A storage battery is installed on one of the moving seats, and a detection mechanism is arranged on the other moving seat.

[0013] In a preferred embodiment, a driving motor is installed on the elliptical seat. A third bevel gear is installed at the output end of the driving motor. A fourth bevel gear is arranged on one side of the third bevel gear, and the fourth bevel gear is installed at the top of the rotating shaft. The third bevel gear is meshed with the fourth bevel gear.

[0014] In a preferred embodiment, the detection mechanism includes a contact ultrasonic sensor and a partial discharge tester. A vertical seat is fixed on one side of the moving seat. A through groove is formed on the surface of the vertical seat. An adjusting lead screw and a slide rail are arranged at intervals on one side of the vertical seat. The slide rail is fixed on the vertical seat, and the adjusting lead screw penetrates through the vertical seat;

[0015] An adjustment seat is arranged on one side of the stand, the slide rail and the adjustment screw both pass through the adjustment seat, a mounting rod is fixed on one side of the adjustment seat, one end of the mounting rod away from the adjustment seat extends out of the through slot and is mounted with the contact ultrasonic sensor.

[0016] In a preferred embodiment, the adjusting screw is movably connected to the stand via a bearing, the adjusting screw is threadedly connected to the adjusting seat, and the slide rail is slidably connected to the adjusting seat.

[0017] In a preferred embodiment, an adjusting motor is installed on the movable seat, and an output end of the adjusting motor is connected to the adjusting screw via a coupling.

[0018] In a preferred embodiment, the storage battery is electrically connected to the regulating motor, the partial discharge tester is a portable partial discharge detector, a placement table is installed on the movable seat, two baffles are fixed on the placement table at intervals, the partial discharge tester is placed on the placement table, and the partial discharge tester is located between the two baffles;

[0019] A fastening plate is provided on one side of one of the baffles, and a moving column is provided on one side of the fastening plate, one end of the moving column is fixed to the surface of the fastening plate, the other end of the moving column passes through the baffle and is connected to a pull plate, a return spring is sleeved on the moving column, one end of the return spring is fixed to the pull plate, and the other end of the return spring is fixed to the surface of the baffle.

[0020] In a preferred embodiment, a scale groove is formed on a surface of one side of the support platform.

[0021] Beneficial effects of the present invention:

[0022] 1. When it is necessary to adjust the distance between the three coupling capacitors, the servo motor can be started to drive one of the two-way lead screws to rotate. Under the transmission action of the two first bevel gears, the transmission shaft and the two second bevel gears, the two two-way lead screws rotate at the same time to drive the trapezoidal slider to rotate along the trapezoidal slide groove, thereby achieving the purpose of easily adjusting the distance between the two first mounting seats and the second mounting seats. The position of the first mounting seat is adjusted by the two two-way lead screws, and after the adjustment is completed, the self-locking effect of the two two-way lead screws can make the first mounting seat stably stop on the surface of the support platform. In summary, when it is necessary to test transformers of different models, the present invention can synchronously and quickly adjust the distance between the two outer coupling capacitors, thereby improving the efficiency of the test;

[0023] 2. When it is necessary to conduct a partial discharge test on the surface of the transformer, there is no need for the staff to approach the coupling capacitor. It is only necessary to start the adjusting motor to drive the adjusting screw to rotate. Under the transmission action of the adjusting screw, the mounting rod moves along the slide rail toward the coupling capacitor until the contact ultrasonic sensor contacts the surface to be tested. Since the moving seat can move on an elliptical track and the scissor lift can drive multiple coupling capacitors to move up and down, the contact ultrasonic sensor can detect all areas of the transformer to be tested, further increasing the detection efficiency, and also greatly increasing the safety of the staff during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The main structure of the dry-type transformer partial discharge test device provided by the present invention is a three-dimensional view Figure 1 ;

[0025] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of shown;

[0026] Figure 3 The main structure of the dry-type transformer partial discharge test device provided by the present invention is a three-dimensional view Figure 2 ;

[0027] Figure 4 A schematic diagram of the structure of the support platform provided by the present invention;

[0028] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of B shown;

[0029] Figure 6 A plan view of the overall structure of the dry-type transformer partial discharge test device provided by the present invention;

[0030] Figure 7 A top view of the transmission sprocket provided by the present invention;

[0031] Figure 8 This is a schematic structural diagram of the placement table provided by the present invention.

[0032] Reference numerals in the figures: 1, scissor lift; 2, support table; 3, trapezoidal chute; 4, first mounting seat; 5, trapezoidal slider; 6, second mounting seat; 7, coupling capacitor; 8, bidirectional lead screw; 9, first bevel gear; 10, first limit seat; 11, drive shaft; 12, second bevel gear; 13, servo motor; 14, gantry; 15, connecting seat; 16, elliptical seat; 17, elliptical track; 18, rotating shaft; 19, transmission sprocket; 20, conveyor chain; 21, moving seat; 22, C-shaped plate; 23, limit post; 24, storage battery; 25, drive motor; 26, third bevel gear; 27, fourth bevel gear; 28, contact type ultrasonic sensor; 29, partial discharge tester; 30, vertical seat; 31, through slot; 32, adjusting lead screw; 33, slide rail; 34, adjusting seat; 35, mounting rod; 36, placement table; 37, baffle; 38, fastening plate; 39, moving column; 40, pull plate; 41, return spring; 42, scale slot; 43, adjusting motor. Detailed implementation mode

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , where Figure 1 is the main structure three-dimensional view of the partial discharge test device for dry-type transformers provided by the present invention Figure 1 ; Figure 2 is Figure 1 the enlarged structural schematic diagram of A shown in Figure 3 is the main structure three-dimensional view of the partial discharge test device for dry-type transformers provided by the present invention Figure 2 ; Figure 4 is the structural schematic diagram of the support table provided by the present invention;

[0035] Figure 5 is Figure 4 the enlarged structural schematic diagram of B shown in Figure 6 is the overall structure plan view of the partial discharge test device for dry-type transformers provided by the present invention; Figure 7 is the top view of the transmission sprocket provided by the present invention; Figure 8 is the structural schematic diagram of the placement table provided by the present invention.

[0036] In the specific implementation process, as Figure 1-Figure 8As shown, it includes a scissor lift 1, a support platform 2 is fixed on the top of the scissor lift 1, four groups of trapezoidal slide grooves 3 are arranged at intervals on the surface of the support platform 2, and the four groups of trapezoidal slide grooves 3 are arranged in a square shape, two first mounting seats 4 are symmetrically arranged above the support platform 2, a trapezoidal slider 5 is fixed at the bottom of the first mounting seat 4, the trapezoidal slider 5 is slidably connected with the trapezoidal slide groove 3, two bidirectional lead screws 8 are movably arranged on the support platform 2 through bearings, the two ends of the bidirectional lead screw 8 are respectively located inside the two adjacent groups of trapezoidal slide grooves 3, the bidirectional lead screw 8 passes through the trapezoidal slider 5, and the bidirectional lead screw 8 is threadedly connected with the trapezoidal slider 5, and the two bidirectional lead screws 8 rotate in the same direction at the same time to drive the two adjacent trapezoidal sliders 5 to move closer to or away from each other along the trapezoidal slide groove 3, a second mounting seat 6 is arranged between the two first mounting seats 4, the second mounting seat 6 is fixed on the support platform 2, coupling capacitors 7 are installed on the first mounting seat 4 and the second mounting seat 6, and a scale groove 42 is opened on the surface of one side of the support platform 2 to facilitate the staff to observe the distance between the three coupling capacitors 7.

[0037] One end of the two bidirectional lead screws 8 passes through the support platform 2 and is installed with a first bevel gear 9. A first limit seat 10 is arranged between the two first bevel gears 9. A transmission shaft 11 is arranged on the first limit seat 10. The transmission shaft 11 is movably connected to the first limit seat 10 through a bearing. Two second bevel gears 12 are installed on the transmission shaft 11 at intervals. The two second bevel gears 12 are respectively meshed with the two first bevel gears 9. A servo motor 13 is installed on the scissor lift 1. The output end of the servo motor 13 is connected to the bidirectional lead screw 8 through a coupling. When the distance between the three coupling capacitors 7 needs to be adjusted, the servo motor 13 can be started to drive one of the bidirectional lead screws. 8 rotates, and under the transmission action of the two first bevel gears 9, the transmission shaft 11 and the two second bevel gears 12, the two bidirectional lead screws 8 rotate at the same time to drive the trapezoidal slider 5 to rotate along the trapezoidal slide groove 3, thereby achieving the purpose of adjusting the distance between the two first mounting seats 4 and the second mounting seat 6. The position of the first mounting seat 4 is adjusted by the two bidirectional lead screws 8. After the adjustment is completed, the self-locking effect of the two bidirectional lead screws 8 can make the first mounting seat 4 stably stop on the surface of the support platform 2. In summary, when it is necessary to test different types of transformers, the present invention can synchronously and quickly adjust the distance between the two outer coupling capacitors 7, thereby improving the test efficiency.

[0038] There is a gantry 14 directly above the scissor lift 1. An oval seat 16 is fixed below the gantry 14 through a connecting seat 15. An oval track 17 is installed on the oval seat 16. Two rotating shafts 18 are arranged at intervals on the oval seat 16. The bottom of the rotating shaft 18 is movably connected to the oval seat 16 through a bearing. Transmission sprockets 19 are installed on both rotating shafts 18. The two transmission sprockets 19 are connected by a conveyor chain 20. Two moving seats 21 are arranged at intervals on one side of the conveyor chain 20. A C-shaped plate 22 is fixed on one side of the moving seat 21. The C-shaped plate 22 is fixed on the conveyor chain 20. A plurality of limiting columns 23 are fixed at the bottom of the moving seat 21, and the plurality of limiting columns 23 are symmetrically arranged on both sides of the oval track 17. A storage battery 24 is installed on one of the moving seats 21, and a detection mechanism is arranged on the other moving seat 21. A driving motor 25 is installed on the oval seat 16. A third bevel gear 26 is installed at the output end of the driving motor 25. A fourth bevel gear 27 is arranged on one side of the third bevel gear 26. The fourth bevel gear 27 is installed at the top of the rotating shaft 18. The third bevel gear 26 meshes with the fourth bevel gear 27. When the driving motor 25 is started, under the transmission of the third bevel gear 26 and the fourth bevel gear 27, one of the transmission sprockets 19 rotates, and then drives the other transmission sprocket 19 and the conveyor chain 20 to move. At this time, the moving seat 21 fixed on the conveyor chain 20 is also driven to move along the oval track 17.

[0039] The detection mechanism includes a contact ultrasonic sensor 28 and a partial discharge tester 29. A vertical seat 30 is fixed on one side of the moving seat 21. A through groove 31 is formed on the surface of the vertical seat 30. An adjusting lead screw 32 and a slide rail 33 are arranged at intervals on one side of the vertical seat 30. The slide rail 33 is fixed on the vertical seat 30. The adjusting lead screw 32 is arranged through the vertical seat 30;

[0040] An adjustment seat 34 is arranged on one side of the stand 30, and the slide rail 33 and the adjustment screw 32 both penetrate the adjustment seat 34, and a mounting rod 35 is fixed on one side of the adjustment seat 34, and one end of the mounting rod 35 away from the adjustment seat 34 extends out of the through slot 31 and is installed with a contact ultrasonic sensor 28, and the adjustment screw 32 is movably connected to the stand 30 through a bearing, and the adjustment screw 32 is threadedly connected to the adjustment seat 34, and the slide rail 33 is slidably connected to the adjustment seat 34, and an adjustment motor 43 is installed on the movable seat 21, and the output end of the adjustment motor 43 is connected to the adjustment screw 32 through a coupling. When a partial discharge test is required on the surface of the transformer, no worker is required When a worker approaches the coupling capacitor 7, he only needs to start the adjusting motor 43 to drive the adjusting screw 32 to rotate. Under the transmission action of the adjusting screw 32, the mounting rod 35 moves along the slide rail 33 toward the coupling capacitor 7 until the contact ultrasonic sensor 28 contacts the surface to be tested. Since the moving seat 21 can move on the elliptical track 17 and the scissor lift 1 can drive multiple coupling capacitors 7 to move up and down, the contact ultrasonic sensor 28 can detect all areas of the transformer to be tested, further increasing the detection efficiency, and also greatly increasing the safety of the workers during testing.

[0041] The storage battery 24 is electrically connected to the regulating motor 43. The partial discharge tester 29 is a portable partial discharge detector, and its model is specifically HTJF-8003. A placement table 36 is installed on the mobile seat 21. Two baffles 37 are fixed on the placement table 36 at intervals. The partial discharge tester 29 is placed on the placement table 36, and the partial discharge tester 29 is located between the two baffles 37. A fastening plate 38 is provided on one side of one baffle 37, and a moving column 39 is provided on one side of the fastening plate 38. One end of the moving column 39 is fixed on the surface of the fastening plate 38, and the other end of the moving column 39 passes through the baffle 37 and is connected to a pull plate. 40, a reset spring 41 is sleeved on the moving column 39, one end of the reset spring 41 is fixed on the pull plate 40, and the other end of the reset spring 41 is fixed on the surface of the baffle 37. In order to prevent the partial discharge tester 29 from falling when the moving seat 21 moves, the staff can pull the pull plate 40 to drive the moving column 39 to move, and the fastening plate 38 moves with the drive of the moving column 39. At this time, the partial discharge tester 29 can be placed on the placement table 36, and finally the pull plate 40 is released. Under the action of the reset spring 41, the fastening plate 38 moves toward the partial discharge tester 29, and finally the partial discharge tester 29 is fixed.

[0042] Working principle of the present invention:

[0043] When it is necessary to adjust the distance between the three coupling capacitors 7, the servo motor 13 can be started to drive one of the bidirectional lead screws 8 to rotate. Under the transmission action of the two first bevel gears 9, the transmission shaft 11 and the two second bevel gears 12, the two bidirectional lead screws 8 rotate at the same time to drive the trapezoidal slider 5 to rotate along the trapezoidal slide 3, thereby achieving the purpose of adjusting the distance between the two first mounting seats 4 and the second mounting seat 6. The position of the first mounting seat 4 is adjusted by the two bidirectional lead screws 8. After the adjustment is completed, the self-locking effect of the two bidirectional lead screws 8 can make the first mounting seat 4 stably stop on the surface of the support table 2. In summary, when it is necessary to test different types of transformers, the present invention can synchronously and quickly adjust the distance between the two outer coupling capacitors 7, thereby improving the test efficiency;

[0044] When it is necessary to conduct a partial discharge test on the surface of the transformer, there is no need for the staff to approach the coupling capacitor 7. It is only necessary to start the adjusting motor 43 to drive the adjusting screw 32 to rotate. Under the transmission action of the adjusting screw 32, the mounting rod 35 moves along the slide rail 33 toward the coupling capacitor 7 until the contact ultrasonic sensor 28 contacts the surface to be tested. Since the movable seat 21 can move on the elliptical track 17 and the scissor lift 1 can drive multiple coupling capacitors 7 to move up and down, the contact ultrasonic sensor 28 can detect all areas of the transformer to be tested, further increasing the detection efficiency, and also greatly increasing the safety of the staff during testing.

[0045] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dry-type transformer partial discharge test device, comprising a scissor lift (1), characterized in that: A support platform (2) is fixedly arranged at the top of the scissor lift (1). Four groups of trapezoidal chutes (3) are spaced apart on the surface of the support platform (2), and the four groups of trapezoidal chutes (3) are arranged in a square shape. Two first mounting seats (4) are symmetrically arranged above the support platform (2). A trapezoidal slider (5) is fixedly arranged at the bottom of the first mounting seat (4), and the trapezoidal slider (5) is slidably connected with the trapezoidal chute (3). A second mounting seat (6) is arranged between the two first mounting seats (4). The second mounting seat (6) is fixed on the support platform (2). Coupling capacitors (7) are mounted on both the first mounting seat (4) and the second mounting seat (6).

2. The dry-type transformer partial discharge test device according to claim 1 is characterized in that: Two bidirectional lead screws (8) are movably arranged on the support platform (2) through bearings. Two ends of the bidirectional lead screw (8) are respectively located inside two adjacent groups of the trapezoidal chutes (3). The bidirectional lead screw (8) penetrates through the trapezoidal slider (5), and the bidirectional lead screw (8) is in threaded connection with the trapezoidal slider (5).

3. The dry-type transformer partial discharge test device according to claim 2 is characterized in that: One ends of the two bidirectional lead screws (8) both penetrate through the support platform (2) and are provided with first bevel gears (9). A first limit seat (10) is arranged between the two first bevel gears (9). A transmission shaft (11) penetrates through the first limit seat (10), and the transmission shaft (11) is movably connected with the first limit seat (10) through a bearing. Two second bevel gears (12) are spaced apart and mounted on the transmission shaft (11). The two second bevel gears (12) are respectively meshed with the two first bevel gears (9). A servo motor (13) is mounted on the scissor lift (1). The output end of the servo motor (13) is connected with the bidirectional lead screw (8) through a coupling.

4. The dry-type transformer partial discharge test device according to claim 3 is characterized in that: A gantry (14) is arranged directly above the scissor lift (1). An elliptical seat (16) is fixedly arranged below the gantry (14) through a connecting seat (15). An elliptical track (17) is mounted on the elliptical seat (16). Two rotating shafts (18) are spaced apart on the elliptical seat (16). The bottom of the rotating shaft (18) is movably connected with the elliptical seat (16) through a bearing. Transmission sprockets (19) are mounted on both of the two rotating shafts (18). The two transmission sprockets (19) are connected through a conveyor chain (20). Two moving seats (21) are spaced apart on one side of the conveyor chain (20). A U-shaped plate (22) is fixedly arranged on one side of the moving seat (21). The U-shaped plate (22) is fixed on the conveyor chain (20). A plurality of limit columns (23) are fixedly arranged at the bottom of the moving seat (21), and the plurality of limit columns (23) are symmetrically arranged on both sides of the elliptical track (17). A storage battery (24) is mounted on one of the moving seats (21), and a detection mechanism is arranged on the other moving seat (21).

5. The dry-type transformer partial discharge test device according to claim 4, characterized in that: A driving motor (25) is mounted on the elliptical seat (16); a third bevel gear (26) is mounted on the output end of the driving motor (25); a fourth bevel gear (27) is arranged on one side of the third bevel gear (26); the fourth bevel gear (27) is mounted on the top of the rotating shaft (18); the third bevel gear (26) is meshed with the fourth bevel gear (27).

6. The dry-type transformer partial discharge test device according to claim 5, characterized in that: The detection mechanism comprises a contact ultrasonic sensor (28) and a partial discharge tester (29); a stand (30) is fixed on one side of the movable seat (21); a through groove (31) is provided on the surface of the stand (30); an adjustment screw (32) and a slide rail (33) are arranged at intervals on one side of the stand (30); the slide rail (33) is fixed on the stand (30), and the adjustment screw (32) is arranged through the stand (30); An adjustment seat (34) is arranged on one side of the stand (30), the slide rail (33) and the adjustment screw (32) both pass through the adjustment seat (34), a mounting rod (35) is fixed on one side of the adjustment seat (34), one end of the mounting rod (35) away from the adjustment seat (34) extends out of the through slot (31) and is mounted with the contact ultrasonic sensor (28).

7. The dry-type transformer partial discharge test device according to claim 6, characterized in that: The adjusting screw (32) is movably connected to the stand (30) via a bearing, the adjusting screw (32) is threadedly connected to the adjusting seat (34), and the slide rail (33) is slidably connected to the adjusting seat (34).

8. The dry-type transformer partial discharge test device according to claim 7, characterized in that: An adjusting motor (43) is installed on the movable seat (21), and an output end of the adjusting motor (43) is connected to the adjusting screw (32) via a coupling.

9. The dry-type transformer partial discharge test device according to claim 8, characterized in that: The storage battery (24) is electrically connected to the regulating motor (43); the partial discharge tester (29) is a portable partial discharge detector; a placement table (36) is installed on the movable seat (21); two baffles (37) are fixed on the placement table (36) at intervals; the partial discharge tester (29) is placed on the placement table (36), and the partial discharge tester (29) is located between the two baffles (37); A fastening plate (38) is provided on one side of one of the baffles (37), and a moving column (39) is provided on one side of the fastening plate (38). One end of the moving column (39) is fixed to the surface of the fastening plate (38), and the other end of the moving column (39) passes through the baffle (37) and is connected to a pulling plate (40). A return spring (41) is sleeved on the moving column (39), and one end of the return spring (41) is fixed to the pulling plate (40), and the other end of the return spring (41) is fixed to the surface of the baffle (37).

10. The dry-type transformer partial discharge test device according to claim 9, characterized in that: A scale groove (42) is provided on one side surface of the support platform (2).

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