A modular variable frequency resonance high voltage test device

Abstract

The present application relates to a modular variable frequency resonant high voltage test device, belonging to the technical field of high voltage test devices, which includes a mobile box, wherein the interior of the mobile box is divided into a first area, a second area, a third area and a fourth area by a plurality of partitions, wherein a first slide plate is slidably connected in the first area, a variable frequency power supply is installed on the first slide plate, a second slide plate is slidably connected in the second area, an excitation transformer is installed on the second slide plate, a sliding cabinet is slidably connected in the third area, a resonant reactance adjustment component for impedance adjustment is installed in the sliding cabinet, a third slide plate is slidably connected in the fourth area, a capacitive voltage divider is installed on the third slide plate, and pull-out components are arranged in the first area, the second area, the third area and the fourth area. The present application has the effect of convenient and rapid transportation of variable frequency resonant high voltage test devices, saving installation time and improving detection efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage test devices, and in particular to a modular variable-frequency resonant high-voltage test device. Background Art

[0002] The variable frequency resonant high-voltage tester is a device used to test the insulation performance of high-voltage electrical equipment. Its primary function is to provide a stable high-voltage power supply during withstand voltage tests on the insulation materials of high-voltage power equipment such as transformers, cables, and switches. This device can verify the insulation performance of electrical equipment at higher voltages (exceeding the operating voltage) and examine the safety and reliability of high-voltage electrical equipment.

[0003] Existing variable frequency resonant high-voltage test equipment is usually composed of multiple independent devices (such as variable frequency power supply, excitation transformer, resonant inductor and capacitive voltage divider). Each device is relatively bulky, and each high-voltage power equipment to be tested on site is usually large and difficult to move. After completing the test of a high-voltage power equipment, it is often necessary to move the high-voltage test equipment when testing the next high-voltage power equipment. This requires a lot of time and manpower to carry, install and fix the equipment, resulting in low detection efficiency. Summary of the Invention

[0004] In order to facilitate the rapid transportation of the variable frequency resonant high-voltage test device, save installation time, and improve detection efficiency, the present application provides a modular variable frequency resonant high-voltage test device.

[0005] This application provides a modular variable frequency resonant high voltage test device, which adopts the following technical solutions:

[0006] A modular variable frequency resonant high-voltage testing device comprises a movable box, wherein the interior of the movable box is divided into a first area, a second area, a third area and a fourth area by a plurality of partitions; a first slide is slidably connected in the first area, and a variable frequency power supply is installed on the first slide; a second slide is slidably connected in the second area, and an excitation transformer is installed on the second slide; a sliding cabinet is slidably connected in the third area, and a resonant reactance adjustment component for impedance adjustment is installed in the sliding cabinet; a third slide is slidably connected in the fourth area, and a capacitive voltage divider is installed on the third slide; a pull-out component is provided in the first area, the second area, the third area and the fourth area, and the first slide, the second slide, the third slide and the sliding cabinet can be pushed out of the movable box through the corresponding pull-out components.

[0007] By adopting the above technical solution, when testing high-voltage power equipment, the mobile box is first pushed to the high-voltage power equipment. During the movement, the pull-out assembly locks the first slide, the second slide, the third slide and the sliding cabinet to restrict them from sliding out of the mobile box. When the mobile box reaches the specified position, the pull-out assembly releases the lock on the first slide, the second slide, the third slide and the sliding cabinet, and the first slide, the second slide, the third slide and the sliding cabinet are pulled out of the mobile box. The resonant reactance adjustment assembly is adjusted according to the impedance requirements of the test, and then the frequency conversion power supply, the excitation transformer, the resonant reactance adjustment assembly and the capacitive voltage divider are connected in sequence. The high-voltage equipment to be tested is then connected to the capacitive voltage divider for testing. When the test of one high-voltage equipment is completed, the power is turned off, the line is removed, and then the first slide, the second slide, the third slide and the sliding cabinet are pushed into the mobile box and locked by the pull-out assembly. Then, the mobile box can be pushed to another high-voltage equipment for testing.

[0008] By modularizing the variable frequency power supply, excitation transformer, resonant reactor and capacitive voltage divider with the first slide, the second slide, the sliding cabinet and the third slide respectively and integrating them into a mobile box as an integrated high-voltage test equipment, the variable frequency resonant high-voltage test device can be easily and quickly transported, saving installation time and improving detection efficiency.

[0009] Optionally, the drawer assembly includes a linkage, the linkage is disposed in the movable box and faces the opening of the movable box, the linkage is connected to a shift rod, and the first slide, the second slide, the third slide, and the sliding cabinet are all provided with a hook plate on a side facing away from the opening of the movable box;

[0010] During the installation process, the first slide, the second slide, the third slide and the sliding cabinet drive the corresponding linkage members to control the relative levers to hook the relative hook plates, and the levers cooperate with the hook plates to restrict the first slide, the second slide, the third slide and the sliding cabinet from being pulled out of the mobile box;

[0011] When extending from the mobile box, the first slide, the second slide, the third slide and the sliding cabinet first move into the mobile box and drive the linkage to control the lever to separate from the hook plate. At the same time, the linkage pops the first slide, the second slide, the third slide and one end of the sliding cabinet out of the mobile box.

[0012] By adopting the above technical solution, during the transfer process, the lever always hooks the hook plate, thereby limiting the movement of the first slide, the second slide, the third slide and the sliding cabinet body. When it is necessary to pull out the first slide, the second slide, the third slide and the sliding cabinet body, the first slide, the second slide, the third slide and the sliding cabinet body are pushed in the direction close to the connecting member. The first slide, the second slide, the third slide and the sliding cabinet body drive the connecting member to control the lever to separate from the hook plate. At the same time, the connecting member pushes the first slide, the second slide, the third slide and the sliding cabinet body out of the mobile box to facilitate the user to pull and draw. When the inspection is completed, the first slide, the second slide, the third slide and the sliding cabinet body are pushed into the mobile box body and drive the connecting member to control the lever to hook the hook plate again. The inspector only needs to press and pull to unlock and fix the first slide, the second slide, the third slide and the sliding cabinet body, so as to facilitate the pulling and drawing of the first slide, the second slide, the third slide and the sliding cabinet body.

[0013] Optionally, the linkage includes a mounting seat, the mounting seat is fixed in the movable box, the mounting seat is slidably connected to a movable plate, the movable plate is connected to an abutting rod, the movable plate is connected to a connecting plate, a guide groove is provided on the connecting plate, the shift rod is rotatably arranged on the mounting seat, a sliding column is provided on the shift rod, and the sliding column is slidably arranged in the guide groove, when the connecting plate moves in a direction away from the movable box, the guide groove controls the movement of the sliding column to make the shift rod swing in a direction close to the hook plate;

[0014] A connecting rod is rotatably connected to the mounting seat, an adjusting slot is provided on the movable plate, one end of the connecting rod is slidably arranged in the adjusting slot, an adjusting spring is connected in the mounting seat, and the adjusting spring is connected to the movable plate.

[0015] By adopting the above technical solution, when it is necessary to pull out the first slide, the second slide, the third slide and the sliding cabinet, the first slide, the second slide, the third slide and the sliding cabinet are pressed to extend into the movable box, and the first slide, the second slide, the third slide and the sliding cabinet push the abutment rod to move in the direction away from the opening of the movable box, and the abutment rod drives the movable plate and the connecting plate to move, and the adjusting groove on the movable plate drives the connecting rod to swing, releasing the limit of the movable plate by the connecting rod, at this time the adjusting spring is in a compressed state, and then when the first slide, the second slide, the third slide and the sliding cabinet are released, the adjusting spring is automatically When the state is restored, the adjusting spring drives the movable plate to move in the direction close to the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body, and the abutting rod pushes the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body to move in the direction close to the opening of the movable box body. At the same time, the guide groove of the connecting plate drives the shifting rod to swing in the direction of disengaging from the hook plate. When the adjusting spring returns to its natural state, the shifting rod is completely disengaged from the hook plate, and the abutting rod pushes one side of the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body to extend out of the mounting opening, making it convenient to pull the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body out of the movable box body.

[0016] When the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body are re-fixed in the moving box, the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body are pushed into the moving box, and the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body are pressed against the abutment rod, and the abutment rod drives the moving plate and the connecting plate to move in the direction away from the moving box opening, and the adjusting slot on the moving plate drives the connecting rod to swing. At this time, the adjusting spring is in a compressed state, and the guide slot of the connecting plate drives the shifting rod to swing in the direction of hooking the hook plate, and then the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body are released. When the adjusting spring recovers the deformation, the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body are pushed out. At this time, the connecting rod hooks the adjusting slot, restricts the adjusting spring to fully recover the deformation and restricts the movement of the moving plate. At the same time, the shifting rod fully hooks the hook plate, restricting the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body from extending out of the moving box. At this time, the first slide plate, the second slide plate, the third slide plate and the sliding cabinet body cannot be withdrawn from the moving box.

[0017] Optionally, the adjustment groove includes a first guide groove section, the first guide groove section is connected to a first groove section at one end close to the abutting rod, the first groove section is recessed in a direction away from the abutting rod, the first groove section is connected to a second guide groove section, the second guide groove section is connected to a second groove section, the second groove section is recessed in a direction away from the abutting rod, and the second groove section is connected to the first guide groove section.

[0018] By adopting the above technical solution, when the first slide, the second slide, the third slide and the sliding cabinet are re-fixed in the mobile box, the mobile plate first moves in the direction away from the opening of the mobile box and then moves in the direction close to the opening of the mobile box. The mobile plate drives the connecting rod to swing, and one end of the connecting rod passes through the first guide groove section and extends into the first groove section. When the adjusting spring recovers part of its deformation, the connecting rod hooks the side wall of the first groove section, thereby limiting the movement of the mobile plate.

[0019] When the first slide, the second slide, the third slide and the sliding cabinet are unlocked, the moving plate first moves in the direction away from the opening of the moving box and then moves in the direction close to the opening of the moving box. One end of the connecting rod disengages from the first groove section, passes through the second guide groove section, enters the second groove section and hooks the inner wall of the second groove section, so that the adjusting spring can completely restore its deformation. The moving plate can push the first slide, the second slide, the third slide and the sliding cabinet to extend out of the opening of the moving box on one side of the moving box and then stop moving.

[0020] Optionally, the variable frequency power supply is placed in the middle of the first slide, the excitation transformer is placed at the end of the second slide away from the pull-out assembly, a plurality of first wire threading holes are provided at the end of the first slide away from the pull-out assembly, a plurality of second wire threading holes are provided on the side of the sliding cabinet adjacent to the second slide, and a plurality of third wire threading holes are provided on the side of the sliding cabinet adjacent to the third slide.

[0021] By adopting the above technical solution, the provision of the first threading hole, the second threading hole and the third threading hole is conducive to tidying up the lines, making it convenient to disconnect the lines and install them.

[0022] Optionally, an opening and closing door is provided at the opening of the mobile box, an opening component is provided in the mobile box, an auxiliary opening groove is provided at the bottom of the opening and closing door, and the opening component is used to control the opening of the opening and closing door and guide the opening and closing door to the bottom of the inner top wall of the mobile box.

[0023] By adopting the above technical solution, when opening the opening and closing door, grasp the auxiliary opening slot and flip the opening and closing door upwards. The opening assembly drives the opening and closing door to open and move the opening and closing door to the bottom of the top wall of the mobile box, so that the opening and closing door is hidden in the mobile box, reducing the space occupied by the opening and closing door after it is opened.

[0024] Optionally, the opening assembly includes a guide inclined plate, the guide inclined plate is arranged on the inner side wall of the movable box body, the opening and closing door is hinged with a guide wheel and an L-shaped folding rod, the guide inclined plate is connected to an auxiliary mounting plate, the turning point of the L-shaped folding rod is hinged to the auxiliary mounting plate, the end of the L-shaped folding rod away from the opening and closing door is hinged to a traction spring, and the other end of the traction spring is hinged to the inner side wall of the movable box body;

[0025] When the opening and closing door is in a closed state, the guide wheel is located at one end of the guide inclined plate close to the opening of the movable box, the traction spring is in a stretched state, and one end of the traction spring hinged to the L-shaped folding rod is closer to the opening of the movable box than the other end of the traction spring;

[0026] When the opening and closing door is completely located below the top wall of the movable box, the guide wheel is located at the end of the guide inclined plate away from the opening of the movable box, the traction spring is in a natural state, and the end of the traction spring hinged to the L-shaped folding rod is farther away from the opening of the movable box than the other end of the traction spring.

[0027] By adopting the above technical solution, when the opening and closing door is in the closed state, the traction spring pulls the L-shaped folding rod, so that the L-shaped folding rod pulls the opening and closing door, so that the opening and closing door is tightly closed;

[0028] During the process of opening the opening and closing door, the traction spring gradually returns to its natural state, and when the traction spring rotates through the auxiliary mounting plate, the traction spring can pull the opening and closing door to move upward automatically. The guide inclined plate and the guide wheel guide the opening and closing door so that the opening and closing door opens and is located below the top wall of the moving box.

[0029] Optionally, the resonant reactance adjustment component includes a plurality of resonant inductors, and the resonant inductors are arranged in two columns and two rows, and one row of the resonant inductors is located above the other row of the resonant inductors. Two motors are installed in the sliding cabinet, and both motors are connected to a lead screw, and the other end of the lead screw is rotatably set in the sliding cabinet, and a lifting seat is threadedly connected to the lead screw, and the lifting seat is slidably connected to the sliding cabinet, and the lifting seat is connected to an electric clamp.

[0030] By adopting the above technical solution, when only one row of resonant reactors is needed for series connection, the electric clamp clamps the resonant reactors in the upper row and starts the motor. The motor drives the lead screw to rotate, thereby raising the lifting seat. The resonant reactors in the upper row are separated from the resonant reactors in the lower row. The two resonant reactors in the lower row are connected in series and connected to the capacitive voltage divider and the excitation transformer. When connected in series, the upper and lower rows of resonant reactors are separated to avoid the introduction of additional inductance or undesirable current, thereby avoiding affecting the resonant frequency, waveform stability or the overall operation of the system.

[0031] When two rows of resonant reactors need to be connected in parallel, the electric clamp clamps the resonant reactors in the upper row and starts the motor. The motor drives the screw to rotate so that the lifting seat first puts the resonant reactors in the upper row on the resonant reactors in the lower row. This makes the electrical connection between the resonant reactors more convenient and allows for short-line connection, which can reduce the length and complexity of the cable, reduce the possibility of wiring errors, and also reduce the impact of the cable inductance and impedance on the system.

[0032] Optionally, a rubber pad is provided at the clamping end of the electric clamp, and a rubber ring is installed at the bottom of the resonant inductor located in the lower row.

[0033] By adopting the above technical solution, the rubber pad and the rubber ring play an insulating role, reducing the leakage of the resonant inductor to damage other equipment and cause test hazards.

[0034] Optionally, one end of the bottom of the second slide away from the pulling assembly is rotatably connected to a rotating sleeve, and a support screw is slidably connected inside the second slide. One end of the support screw is located in the rotating sleeve and is threadedly connected to the rotating sleeve.

[0035] By adopting the above technical solution, after pulling out the second slide, the rotating sleeve is rotated to make the support screw extend out of the rotating sleeve and support it on the ground, thereby preventing the end of the second slide plate from being in a cantilevered state for a long time to support the excitation transformer and cause deformation of the second slide, so that the second slide can maintain smooth sliding.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] 1. By integrating the variable frequency power supply, excitation transformer, resonant reactor and capacitive voltage divider with the first slide, second slide, sliding cabinet and third slide respectively into a modular high-voltage test device in a mobile box, the variable frequency resonant high-voltage test device can be quickly transported, saving installation time and improving detection efficiency.

[0038] 2. The inspector only needs to press and pull to unlock and fix the first slide, second slide, third slide and sliding cabinet, making it easy to pull out the first slide, second slide, third slide and sliding cabinet;

[0039] 3. When opening the door, grasp the auxiliary opening slot and flip the door upwards. The opening assembly drives the door to open and move it to the bottom of the top wall of the mobile box, so that the door is hidden in the mobile box, reducing the space occupied by the door after opening.

[0040] 4. When connected in series, separate the upper and lower rows of resonant reactors to avoid introducing additional inductance or unwanted current that could affect the resonant frequency, waveform stability, or overall system operation.

[0041] 5. When connected in parallel, the resonant reactors in the upper row can be directly placed on the resonant reactors in the lower row, which makes the electrical connection between the resonant reactors more convenient and can be connected using short wires, which can reduce the length and complexity of the cable and the possibility of wiring errors. It also reduces the impact of the cable inductance and impedance on the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0043] Figure 2 It is a structural diagram of the pull-out assembly used in an embodiment of the present application.

[0044] Figure 3 It is a structural diagram of the embodiment of the present application used to reflect the linkage.

[0045] Figure 4 It is a structural diagram of the connecting plate used in an embodiment of the present application.

[0046] Figure 5 It is a structural diagram of an embodiment of the present application for reflecting an opening component.

[0047] Explanation of the reference numerals: 1. Moving box; 11. First area; 12. Second area; 13. Third area; 14. Fourth area; 15. First slide; 151. First threading hole; 16. Second slide; 161. Rotating sleeve; 162. Support screw; 17. Sliding cabinet; 171. Second threading hole; 172. Third threading hole; 18. Third slide; 19. Opening and closing door; 191. Auxiliary opening slot; 2. Variable frequency power supply; 3. Excitation transformer; 4. Resonant reactance adjustment component; 41. Resonant reactor; 411. Rubber ring; 42. Motor; 43. Screw; 44. Lifting seat ;45. Electric gripper;451. Rubber pad;5. Capacitor voltage divider;6. Pull-out assembly;61. Push rod;62. Hook plate;63. Slide column;7. Linkage;71. Mounting seat;72. Moving plate;721. Adjustment groove;7211. First guide groove section;7212. First groove section;7213. Second guide groove section;7214. Second groove section;73. Abutment rod;74. Connecting plate;741. Guide groove;75. Connecting rod;76. Adjustment spring;8. Opening assembly;81. Guide inclined plate;82. Guide wheel;83. L-shaped folding rod;84. Auxiliary mounting plate;85. Traction spring. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1-5 This application is described in further detail.

[0049] The embodiment of the present application discloses a modular variable frequency resonant high voltage testing device.

[0050] like Figure 1 and Figure 2The modular variable frequency resonant high voltage test device includes a mobile box 1. One side of the mobile box 1 is open. The interior of the mobile box 1 is divided into a first area 11, a second area 12, a third area 13, and a fourth area 14 by three partitions. The first area 11 and the second area 12 are located on the same side of the mobile box 1. The first area 11 is located above the second area 12. The fourth area 14 is located on the other side of the mobile box 1. The third area 13 is located between the fourth area 14 and the second area 12.

[0051] A first slide 15 is slidably connected within the first area 11. A variable frequency power supply 2 is mounted on the first slide 15. The variable frequency power supply 2 is located in the middle of the first slide 15. A plurality of first threading holes 151 are formed on the first slide 15. The first threading holes 151 are located at one end of the first slide 15 close to the opening of the movable box 1.

[0052] A second slide 16 is slidably connected within the second area 12. An excitation transformer 3 is mounted on the second slide 16. The excitation transformer 3 is mounted on an end of the second slide 16 close to the opening of the movable housing 1, and the top of the excitation transformer 3 faces the first threading hole 151. The bottom end of the second slide 16 close to the opening of the movable housing 1 is rotatably connected to two rotating sleeves 161. A support screw 162 is internally threadedly connected to the rotating sleeve 161. One end of the support screw 162 extends into the second slide 16 and is slidably connected to the second slide 16.

[0053] A sliding cabinet 17 is slidably mounted in the third area 13 , and a resonant reactance adjustment component 4 is mounted on the sliding cabinet 17 . A plurality of second threading holes 171 are formed on a side of the sliding cabinet 17 close to the second area 12 , and a plurality of third threading holes 172 are formed on a side of the sliding cabinet 17 close to the fourth area 14 .

[0054] A third slide 18 is slidably connected to the fourth region 14, and a capacitive voltage divider 5 is mounted on the third slide 18. Pull-out assemblies 6 are provided in the first, second, third, and fourth regions 11, 12, 13, and 14. The first, second, and third slides 15, 16, 18, and sliding cabinet 17 can be pushed out of the opening of the mobile case 1 via the corresponding pull-out assemblies 6. The pull-out assemblies 6 are mounted on the side of the mobile case 1 facing the opening.

[0055] Opening components 8 are provided on both side walls of the mobile box 1. The two opening components 8 are commonly connected to an opening and closing door 19. An auxiliary opening groove 191 is provided at the bottom of the opening and closing door 19. The opening component 8 is used to control the opening of the opening and closing door 19 and guide the opening and closing door 19 to the bottom of the inner top wall of the mobile box 1.

[0056] When testing high-voltage power equipment, first push the mobile box 1 to the high-voltage power equipment. During the movement, the opening assembly 8 controls the opening and closing door 19 to tightly close the opening of the mobile box 1, and the pulling assembly 6 locks the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 to prevent them from sliding out of the mobile box 1;

[0057] When the mobile box 1 reaches the specified position, the locking of the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 by the pulling assembly 6 is released, and the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pulled out of the mobile box 1, and the resonant reactance adjustment component 4 is adjusted according to the impedance requirement of the detection, and then the frequency conversion power supply 2, the excitation transformer 3, the resonant reactance adjustment component 4 and the capacitive voltage divider 5 are connected in sequence, and then the high-voltage equipment to be tested is connected to the capacitive voltage divider 5 for detection. When the detection of one high-voltage equipment is completed, the power supply is turned off, the line is removed, and then the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pushed into the mobile box 1, and locked by the pulling assembly 6, and the mobile box 1 can be pushed to another high-voltage equipment for detection.

[0058] By modularizing the variable frequency power supply 2, the excitation transformer 3, the resonant inductor 41 and the capacitive voltage divider 5 with the first slide 15, the second slide 16, the sliding cabinet 17 and the third slide 18 as an integrated high-voltage test equipment in the mobile box 1, the variable frequency resonant high-voltage test device can be easily and quickly transported, saving installation time and improving detection efficiency.

[0059] like Figure 2 、 Figure 3 and Figure 4 The pull-out assembly 6 includes a linkage 7, which is mounted on the side of the mobile box 1 facing its opening. The linkage 7 is connected to a lever 61, and a hook plate 62 is provided on the side of the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 facing away from the opening of the mobile box 1.

[0060] The linking member 7 includes a mounting seat 71, which is fixed to the side wall of the moving box body 1. The mounting seat 71 is slidably connected to a moving plate 72, and the moving plate 72 is connected to an abutting rod 73. One end of the abutting rod 73 passes through the end of the mounting seat 71 and faces the opening of the moving box body 1. The moving plate 72 is connected to a connecting plate 74. A guide slot 741 is provided on the connecting plate 74. The guide slot 741 is a straight slot. The guide slot 741 is inclined upward in the direction close to the opening of the moving box body 1. The detent rod 61 is hinged to the bottom of the mounting seat 71. Both ends of the detent rod 61 are hook-shaped. The end of the detent rod 61 away from the opening of the moving box body 1 is bent in the direction close to the opening of the moving box body 1, and the detent rod 61 is connected to a sliding post 63, which is inserted into the guide slot 741.

[0061] A connecting rod 75 is rotatably connected to the side of the top surface of the mounting seat 71 away from the opening of the movable box body 1. An adjustment slot 721 is formed on the top surface of the movable plate 72. One end of the connecting rod 75 is slidably disposed in the adjustment slot 721. An adjustment spring 76 is connected to the mounting seat 71. The adjustment spring 76 is connected to the side of the movable plate 72 away from the opening of the movable box body 1.

[0062] The adjusting groove 721 includes a first guide groove section 7211, a first groove section 7212, a second guide groove section 7213 and a second groove section 7214. The first guide groove section 7211 is in the shape of a broken line. The end of the first guide groove section 7211 away from the adjusting spring 76 is connected to the first groove section 7212. The first groove section 7212 is recessed in the direction away from the abutting rod 73. The two side wall turning points of the first groove section 7212 are staggered with each other. The first groove section 7212 is connected to the second guide groove section 7213. The second guide groove section 7213 is in the shape of a broken line. The bending directions of the first guide groove 741 and the second guide groove 741 are opposite. The side wall bending section of the first groove section 7212 close to the abutting rod 73 is close to the first guide groove section 7211, and the side wall bending section of the first groove section 7212 away from the abutting rod 73 is close to the second guide groove section 7213. The second guide groove section 7213 is connected to the second groove section 7214, which is connected to the first guide groove section 7211. The second groove section 7214 is arranged opposite to the first groove section 7212, and the second groove section 7214 is recessed in a direction away from the abutting rod 73. The two side wall turning points of the first groove section 7212 are staggered with each other. The side wall bending section of the second groove section 7214 close to the adjustment spring 76 is close to the first guide groove 741, and the side wall turning point of the second groove section 7214 away from the adjustment spring 76 is close to the second guide groove 741.

[0063] When the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 need to be pulled out, the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 need to be pulled out and extended into the movable box 1, and the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 push the abutment rod 73 to move in the direction away from the opening of the movable box 1, and the abutment rod 73 drives the movable plate 72 and the connecting plate 74 to move;

[0064] At this time, the adjusting groove 721 on the movable plate 72 drives the connecting rod 75 to swing, and one end of the connecting rod 75 disengages from the first groove section 7212, releasing the limit of the connecting rod 75 on the movable plate 72, and the adjusting spring 76 is in a compressed state. Then, when the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are released, the adjusting spring 76 recovers to its natural state, and the connecting rod 75 swings through the second guide groove section 7213, enters the second groove section 7214 and hooks the inner wall of the second groove section 7214. At the same time, the adjusting spring 76 drives the moving plate 72 to move toward the opening of the moving box body 1, and the abutment rod 73 pushes the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet body 17 to move toward the opening of the moving box body 1. At the same time, the guide groove 741 of the connecting plate 74 drives the lever 61 to swing in the direction of disengaging from the hook plate 62. When the adjusting spring 76 returns to normal, the lever 61 is completely disengaged from the hook plate 62, and the abutment rod 73 pushes one side of the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet body 17 to extend out of the opening of the moving box body 1, making it convenient to pull the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet body 17 out of the moving box body 1.

[0065] When re-fixing the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 in the mobile box 1, the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pushed into the mobile box 1, and one side of the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 abuts against the abutting rod 73, and the abutting rod 73 drives the moving plate 72 and the connecting plate 74 to move;

[0066] When the locking cam 73 is in the unlocked position, the locking cam 738 is in the unlocked position, and the first and second locking cams 73 are in the unlocked position, so that the first and second locking cams 738 are unlocked and the first and second locking cams 738 are in the unlocked position, and the first and second locking cams 738 are in the unlocked position, so that the first and second locking cams 738 are in the unlocked position, and the

[0067] When the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are fixed, when the movable plate 72 moves away from the opening of the movable box 1, the side wall of the second groove section 7214 away from the adjustment spring 76 abuts against the connecting rod 75, allowing the connecting rod 75 to smoothly enter the first guide groove section 7211;

[0068] When the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pulled out, and when the movable plate 72 moves in the direction away from the opening of the movable box 1, the first groove section 7212 abuts against the side wall of the abutting rod 73 and enables the connecting rod 75 to smoothly enter the first guide groove section 7211, thereby preventing the connecting rod 75 from swinging back, thereby improving the stability of the connecting part 7, and the inspector only needs to press and pull to unlock and fix the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17, which is convenient for pulling out the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17.

[0069] like Figure 5 The opening assembly 8 includes a guide inclined plate 81, which is fixed to the inner wall of the mobile box body 1. A guide wheel 82 and an L-shaped folding rod 83 are hinged on the opening and closing door 19. The guide inclined plate 81 is connected to an auxiliary mounting plate 84, which is vertically arranged downward. The turning point of the L-shaped folding rod 83 is hinged to the auxiliary mounting plate 84. One end of the L-shaped folding rod 83 away from the opening and closing door 19 is hinged to a traction spring 85, and the other end of the traction spring 85 is hinged to the inner wall of the mobile box body 1;

[0070] When the opening and closing door 19 is in the closed state, the guide wheel 82 is located at the end of the guide inclined plate 81 close to the opening of the movable box 1, the traction spring 85 is in a stretched state, and the end of the traction spring 85 hinged to the L-shaped folding rod 83 is closer to the opening of the movable box 1 than the other end of the traction spring 85;

[0071] When the opening and closing door 19 is completely located below the top wall of the mobile box 1, the guide wheel 82 is located at the end of the guide inclined plate 81 away from the opening of the mobile box 1, the traction spring 85 is in a natural state, and the end of the traction spring 85 hinged to the L-shaped folding rod 83 is farther away from the opening of the mobile box 1 than the other end of the traction spring 85.

[0072] When the opening and closing door 19 is in the closed state, the traction spring 85 pulls the L-shaped folding rod 83, so that the L-shaped folding rod 83 pulls the opening and closing door 19, so that the opening and closing door 19 is tightly closed;

[0073] During the process of opening the opening and closing door 19, the traction spring 85 gradually returns to its natural state, and when the traction spring 85 rotates through the auxiliary mounting plate 84, the traction spring 85 can pull the opening and closing door 19 to move upward automatically, and the guide inclined plate 81 and the guide wheel 82 guide the opening and closing door 19 so that the opening and closing door 19 is opened and located below the top wall of the movable box body 1.

[0074] like Figure 1The resonant reactance adjustment component 4 includes a plurality of resonant inductors 41, the number of which is four. The resonant inductors 41 are arranged in two columns and two rows. One row of resonant inductors 41 is located above the other row of resonant inductors 41. Two motors 42 are installed in the sliding cabinet 17. Both motors 42 are connected to a lead screw 43. The other end of the lead screw 43 is rotatably set in the sliding cabinet 17. A lifting seat 44 is threadedly connected to the lead screw 43. The lifting seat 44 is slidably connected to the sliding cabinet 17. The lifting seat 44 is connected to an electric clamp 45. The clamping end of the electric clamp 45 is provided with a rubber pad 451. A rubber ring 411 is installed at the bottom of the resonant inductor 41 located in the lower row.

[0075] When only one row of resonant reactors 41 is needed to be connected in series, the electric clamp 45 clamps the resonant reactors 41 in the upper row and starts the motor 42. The motor 42 drives the lead screw 43 to rotate, thereby raising the lifting base 44. The resonant reactors 41 in the upper row are separated from the resonant reactors 41 in the lower row. The two resonant reactors 41 in the lower row are connected in series and connected to the capacitive voltage divider 5 and the excitation transformer 3. When connected in series, the upper and lower rows of resonant reactors 41 are separated to avoid introducing additional inductance or undesirable current, thereby avoiding affecting the resonant frequency, waveform stability or the overall operation of the system.

[0076] When two rows of resonant inductors 41 need to be connected in parallel, the electric clamp 45 clamps the resonant inductors 41 in the upper row and starts the motor 42. The motor 42 drives the screw 43 to rotate, thereby lowering the lifting seat 44. The resonant inductors 41 in the upper row are placed on the resonant inductors 41 in the lower row, which makes the electrical connection between the resonant inductors 41 more convenient and can use short-line connection, which can reduce the length and complexity of the cable, reduce the possibility of wiring errors, and also reduce the impact of the cable inductance and impedance on the system.

[0077] It should be noted that before conducting high-voltage power equipment inspection, it should be ensured that the variable frequency power supply 2, excitation transformer 3, resonant inductor 41 and capacitor voltage divider 5 are grounded, and insulating pads are laid between the first slide 15 and the variable frequency power supply 2, and between the second slide 16 and the capacitor voltage divider 5. The sliding cabinet 17 adopts an insulating cabinet, and the terminal cover on the capacitor voltage divider 5 is covered with a high-strength insulating shield. Workers must wear insulating gloves when operating to ensure safety during the inspection process.

[0078] The principle of the embodiment of the present application is as follows: when testing high-voltage power equipment, the mobile box 1 is first pushed to the high-voltage power equipment. During the movement, the pull-out assembly 6 locks the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 to prevent them from sliding out of the mobile box 1. When the mobile box 1 reaches the specified position, the pull-out assembly 6 releases the lock on the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17, and the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pulled out of the mobile box 1. The resonant reactance adjustment component 4 is adjusted according to the impedance requirements of the test, and then the variable frequency power supply 2, the excitation transformer 3, the resonant reactance adjustment component 4 and the capacitor voltage divider 5 are connected in sequence, and then the high-voltage equipment to be tested is connected to the capacitor voltage divider 5 for testing. When the test of a high-voltage equipment is completed, the power is turned off, the line is removed, and then the first slide 15, the second slide 16, the third slide 18 and the sliding cabinet 17 are pushed into the mobile box 1, and locked by the pulling component 6, and the mobile box 1 can be pushed to another high-voltage equipment for testing.

[0079] By modularizing the variable frequency power supply 2, the excitation transformer 3, the resonant inductor 41 and the capacitive voltage divider 5 with the first slide 15, the second slide 16, the sliding cabinet 17 and the third slide 18 as an integrated high-voltage test equipment in the mobile box 1, the variable frequency resonant high-voltage test device can be easily and quickly transported, saving installation time and improving detection efficiency.

[0080] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A modular variable frequency resonance high voltage test device, characterized in that: The invention comprises a mobile box (1), wherein the mobile box (1) is divided into a first area (11), a second area (12), a third area (13) and a fourth area (14) by a plurality of partitions; a first slide plate (15) is slidably connected to the first area (11), a variable frequency power supply (2) is mounted on the first slide plate (15); a second slide plate (16) is slidably connected to the second area (12), an excitation transformer (3) is mounted on the second slide plate (16); a sliding cabinet (17) is slidably connected to the third area (13), and the sliding cabinet (17) is slidably connected to the third area (13); 7) is installed with a resonant reactance adjustment component (4) for impedance adjustment, a third slide plate (18) is slidable in the fourth area (14), a capacitive voltage divider (5) is installed on the third slide plate (18), the first area (11), the second area (12), the third area (13) and the fourth area (14) are all provided with a pull-out component (6), and the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) can be pushed out of the mobile box (1) through the corresponding pull-out component (6); An opening and closing door (19) is provided at the opening of the mobile box (1), an auxiliary opening groove (191) is provided at the bottom of the opening and closing door (19), an opening component (8) is provided inside the mobile box (1), and the opening component (8) is used to control the opening of the opening and closing door (19) and guide the opening and closing door (19) to the bottom of the inner top wall of the mobile box (1); The opening assembly (8) comprises a guide inclined plate (81), the guide inclined plate (81) being arranged on the inner side wall of the movable box body (1), a guide wheel (82) and an L-shaped folding rod (83) being hinged on the opening and closing door (19), the guide inclined plate (81) being connected to an auxiliary mounting plate (84), a turning point of the L-shaped folding rod (83) being hinged on the auxiliary mounting plate (84), an end of the L-shaped folding rod (83) away from the opening and closing door (19) being hinged to a traction spring (85), the other end of the traction spring (85) being hinged to the inner side wall of the movable box body (1); When the opening and closing door (19) is in a closed state, the guide wheel (82) is located at one end of the guide inclined plate (81) close to the opening of the movable box (1), the traction spring (85) is in a stretched state, and one end of the traction spring (85) hinged to the L-shaped folding rod (83) is closer to the opening of the movable box (1) than the other end of the traction spring (85); When the opening and closing door (19) is completely located below the inner top wall of the movable box (1), the guide wheel (82) is located at the end of the guide inclined plate (81) away from the opening of the movable box (1), the traction spring (85) is in a natural state, and the end of the traction spring (85) hinged to the L-shaped folding rod (83) is farther away from the opening of the movable box (1) than the other end of the traction spring (85).

2. The modular variable frequency resonance high voltage test device according to claim 1 is characterized in that: The drawer assembly (6) comprises a linking member (7), the linking member (7) is arranged in the movable box (1), and the linking member (7) faces the opening of the movable box (1), the linking member (7) is connected to a lever (61), and the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) are all provided with a hook plate (62) on a side facing away from the opening of the movable box (1); During the installation process, the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) drive the corresponding linkage member (7) to control the relative lever (61) to hook the relative hook plate (62), and the lever (61) cooperates with the hook plate (62) to limit the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) from being pulled out of the mobile box (1); When extending out of the mobile box (1), the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) first move into the mobile box (1) and drive the linkage (7) to control the lever (61) to separate from the hook plate (62). At the same time, the linkage (7) ejects one end of the first slide plate (15), the second slide plate (16), the third slide plate (18) and the sliding cabinet (17) out of the mobile box (1).

3. The modular variable frequency resonance high voltage test device according to claim 2 is characterized in that: The linkage member (7) comprises a mounting seat (71), the mounting seat (71) is fixed in the movable box (1), the mounting seat (71) is slidably connected to a movable plate (72), the movable plate (72) is connected to an abutting rod (73), the movable plate (72) is connected to a connecting plate (74), a guide groove (741) is provided on the connecting plate (74), the shifting rod (61) is rotatably arranged on the mounting seat (71), a sliding column (63) is arranged on the shifting rod (61), the sliding column (63) is slidably arranged in the guide groove (741), when the connecting plate (74) moves in a direction away from the movable box (1), the guide groove (741) controls the movement of the sliding column (63) to make the shifting rod (61) swing in a direction close to the hook plate (62); A connecting rod (75) is rotatably connected to the mounting seat (71), an adjusting groove (721) is provided on the movable plate (72), one end of the connecting rod (75) is slidably arranged in the adjusting groove (721), an adjusting spring (76) is connected in the mounting seat (71), and the adjusting spring (76) is connected to the movable plate (72).

4. The modular variable frequency resonance high voltage test device according to claim 3 is characterized in that: The adjustment groove (721) includes a first guide groove section (7211), and the first guide groove section (7211) is connected to a first groove section (7212) at one end close to the abutment rod (73), and the first groove section (7212) is recessed in a direction away from the abutment rod (73). The first groove section (7212) is connected to a second guide groove section (7213), and the second guide groove section (7213) is connected to a second groove section (7214), and the second groove section (7214) is recessed in a direction away from the abutment rod (73), and the second groove section (7214) is connected to the first guide groove section (7211).

5. The modular variable frequency resonance high voltage test device according to any one of claims 1 to 4, characterized in that: The variable frequency power supply (2) is placed in the middle of the first slide (15), the excitation transformer (3) is placed at the end of the second slide (16) away from the pull-out assembly (6), a plurality of first threading holes (151) are provided at the end of the first slide (15) away from the pull-out assembly (6), a plurality of second threading holes (171) are provided on a side of the sliding cabinet (17) adjacent to the second slide (16), and a plurality of third threading holes (172) are provided on a side of the sliding cabinet (17) adjacent to the third slide (18).

6. The modular variable frequency resonance high voltage test device according to claim 1 is characterized in that: The resonant reactance adjustment component (4) comprises a plurality of resonant reactors (41), wherein the resonant reactors (41) are arranged in two columns and two rows, wherein one row of the resonant reactors (41) is located above another row of the resonant reactors (41), wherein two motors (42) are installed in the sliding cabinet (17), wherein both motors (42) are connected to a lead screw (43), wherein the other end of the lead screw (43) is rotatably arranged in the sliding cabinet (17), wherein a lifting seat (44) is threadedly connected to the lead screw (43), wherein the lifting seat (44) is slidably connected to the sliding cabinet (17), and wherein the lifting seat (44) is connected to an electric clamp (45).

7. The modular variable frequency resonance high voltage test device according to claim 6 is characterized in that: The clamping end of the electric clamp (45) is provided with a rubber pad (451), and the bottom of the resonant reactor (41) located in the lower row is installed with a rubber ring (411).

8. The modular variable frequency resonance high voltage test device according to claim 5 is characterized in that: One end of the bottom of the second slide plate (16) away from the pulling assembly (6) is rotatably connected to a rotating sleeve (161), and a supporting screw (162) is slidably connected inside the second slide plate (16), and one end of the supporting screw (162) is located inside the rotating sleeve (161) and is threadedly connected to the rotating sleeve (161).

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