High-voltage test phase sequence conversion device

Abstract

The utility model relates to the technical field of high-voltage phase sequence conversion, in particular to a high-voltage test phase sequence conversion device, which comprises a base, a solid-state relay is mounted on the top surface of the base, two ends of the solid-state relay are respectively communicated with test leads, one test lead is communicated with an aviation plug female end, and a fixing block is fixedly arranged on the side wall of the base. A sliding rail is fixedly arranged on the top face of the fixing block and slidably connected with a moving block, a support is arranged at the upper end of the moving block, a phase changing assembly is installed on the support and comprises a connecting block, a plurality of first air cylinders are installed on the top face of the connecting block through an installation base, and piston rods of the first air cylinders penetrate through the connecting block. Manual operation in a high-voltage environment is avoided, the electric shock risk is reduced, the safety of operators is guaranteed, the arc discharge phenomenon caused by poor contact is reduced, the service life of equipment is prolonged, meanwhile, the influence of electromagnetic interference on test equipment and test data is reduced, and the stability of contact resistance in the long-term use process is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage phase sequence conversion technology, and in particular to a high-voltage test phase sequence conversion device. Background Technology

[0002] In the field of high-voltage electrical testing, accurate simulation of different phase sequence combinations plays a crucial role in comprehensively and accurately evaluating the performance, safety, and compatibility of electrical equipment. As the core equipment for achieving this goal, the reliability of the phase sequence conversion device directly determines the accuracy and credibility of the test results, which in turn affects a series of important tasks such as subsequent design optimization, fault diagnosis, and safety assessment of electrical equipment.

[0003] A search revealed a Chinese patent with publication number CN208109988U, which provides a high-voltage test phase sequence switching device. This device achieves phase-to-phase insulation test switching by rotating a conductor with a handwheel, allowing the product to perform withstand voltage tests on phases A, B, and C individually after assembly, or to perform a withstand voltage test on a single phase, thus realizing the phase-to-phase withstand voltage test scheme for the product.

[0004] However, during use, it was found that manual operation under high voltage conditions can easily lead to electric shock risk, and poor contact of the contacts can easily lead to arc discharge. Mechanical contacts are prone to oxidation after long-term use, which increases contact resistance, affects the accuracy of high voltage testing, and is not conducive to the phase sequence conversion of high voltage testing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-voltage test phase sequence conversion device, which avoids manual operation in high-voltage environments, reduces the risk of electric shock, and ensures the safety of operators. It adopts a plug-in connection method between the male and female ends of an aviation plug, making the contact more stable and reliable, reducing arc discharge caused by poor contact, extending the service life of the equipment, and reducing the impact of electromagnetic interference on the test equipment and test data, thus ensuring the stability of contact resistance during long-term use.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a high-voltage test phase sequence conversion device, including a base, a solid-state relay installed on the top surface of the base, experimental wires connected to both ends of the solid-state relay, an aviation plug female terminal connected to one of the experimental wires, a fixing block fixedly installed on the side wall of the base, a slide rail fixedly installed on the top surface of the fixing block, a moving block slidably connected to the slide rail, a bracket provided on the upper end of the moving block, and a phase switching component installed on the bracket;

[0007] The commutation assembly includes a connecting block. Multiple first cylinders are mounted on the top surface of the connecting block via a mounting base. The piston rods of the first cylinders pass through the connecting block. A clamping cylinder is mounted on the bottom surface of the piston rods of the first cylinders. The fingertip of the clamping cylinder clamps the aviation plug sub-end. The aviation plug sub-end is inserted and mated with the aviation plug female end.

[0008] Preferably, the base has multiple mounting slots at both ends, the top surface of the fixing block has multiple upright blocks fixedly mounted, and the female end of the aviation plug is mounted on the upper end of the upright blocks.

[0009] Through the above technical solution, the support block provides stable support for the female terminal of the aviation plug, which facilitates the high-voltage experimental connection of the solid-state relay.

[0010] Preferably, the top surface of the movable block is provided with a T-shaped groove, and a slider is slidably connected inside the T-shaped groove, with the top surface of the slider being fixedly connected to the top surface of the bracket.

[0011] The above technical solution uses the piston rod of the second cylinder to push the slider to slide horizontally in the T-groove, thereby achieving accurate positioning and movement of the bracket.

[0012] Preferably, a limiting groove is formed on the bottom surface of the movable block, the groove wall is slidably connected to the outer wall of the slide rail, and a lead screw is threadedly connected to the movable block through a threaded hole.

[0013] Preferably, the outer peripheral walls at both ends of the lead screw are rotatably connected to support blocks, the bottom surfaces of the two support blocks are fixedly connected to the top surface of the fixed block, and the side wall of the fixed block is equipped with a forward and reverse motor via a mounting base, the output shaft of the forward and reverse motor being coaxially connected to the lead screw.

[0014] With the above technical solution, the forward and reverse motor drives the lead screw to rotate, and the lead screw cooperates with the moving block through the threaded hole, driving the moving block to slide horizontally along the slide rail through the limit groove.

[0015] Preferably, a second cylinder is mounted on one end of the bottom surface of the slider via a mounting base, and the piston rod of the second cylinder is fixedly connected to the moving block.

[0016] Through the above technical solution, the slider adjusts its position via the piston rod of the second cylinder, thereby achieving accurate positioning and movement of the bracket.

[0017] Preferably, the outer wall of the aviation plug terminal has two grooves, and the finger end of the clamping cylinder is inserted into the grooves.

[0018] The above technical solution improves the stability of the clamping cylinder.

[0019] The beneficial effects of this utility model are:

[0020] 1. By controlling the extension and retraction of the piston rods of different first cylinders, different aviation plug terminals are moved to achieve different plug-in combinations of aviation plug terminals and aviation plug female terminals, thereby completing the phase sequence conversion. This avoids manual operation in high-voltage environments, reduces the risk of electric shock, and ensures the safety of operators. Compared with traditional contact methods, the plug-in connection method of aviation plug terminals and aviation plug female terminals provides more stable and reliable contact, reduces arc discharge caused by poor contact, extends the service life of the equipment, and reduces the impact of electromagnetic interference on the test equipment and test data, ensuring the stability of contact resistance during long-term use.

[0021] 2. The mounting slots at both ends of the base are used to fix the device on the test platform to ensure stability. The upright block on the top surface of the fixing block supports the female end of the aviation plug, allowing it to connect with the test lead wire. The forward and reverse motor drives the lead screw to rotate. The lead screw engages with the moving block through the threaded hole, causing the moving block to slide horizontally along the slide rail through the limit groove. The piston rod of the second cylinder pushes the slider to slide horizontally in the T-slot, achieving accurate positioning and movement of the bracket and reducing human error. The piston rod of the first cylinder on the connecting block of the phase switching component extends and retracts, driving the vertical adjustment of the aviation plug female end held by the clamping cylinder. The second cylinder adjusts the horizontal direction of the aviation plug female end, allowing the aviation plug female end to be inserted or separated from the aviation plug female end. This realizes the switching of aviation plug female ends with different phase sequences, completing the phase sequence conversion and achieving different phase sequence arrangements and switching to meet different high-pressure test requirements.

[0022] 3. When the piston rod of the first cylinder extends, the clamping cylinder clamps the aviation plug terminal through the groove and moves downward, so that the aviation plug terminal and the aviation plug female terminal are on the same central axis. Then, the piston rod of the second cylinder retracts, causing the slider to move synchronously with the bracket, pushing the aviation plug terminal gradually closer to the aviation plug female terminal until the connection is completed. When removing, the piston rod of the second cylinder extends, pushing the clamping cylinder to move in the opposite direction, so that the aviation plug terminal and the aviation plug female terminal are separated. At the same time, by controlling the extension and retraction height of the piston rod of the first cylinder and the horizontal displacement of the moving block, the combination and insertion of aviation plug terminals and aviation plug female terminals with different phase sequences can be realized, realizing rapid phase sequence switching in high-voltage experiments, improving phase sequence conversion efficiency, and improving the high-voltage experiment effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a right-side perspective view of the movable block structure of this utility model;

[0025] Figure 3 This is a rear perspective view of the support structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the commutation component structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the assembly of the aviation plug terminal structure of this utility model.

[0028] In the diagram: 100, base; 101, mounting slot; 200, solid-state relay; 201, experimental wire; 202, female terminal of aviation plug; 300, fixing block; 301, upright block; 302, slide rail; 303, moving block; 304, T-slot; 305, slider; 306, bracket; 307, lead screw; 308, support block; 309, forward and reverse motor; 310, second cylinder; 311, limit slot; 400, phase switching assembly; 401, connecting block; 402, first cylinder; 403, clamping cylinder; 404, female terminal of aviation plug; 405, groove. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, this embodiment provides a high-voltage test phase sequence conversion device, including a base 100, a solid-state relay 200 mounted on the top surface of the base 100, experimental wires 201 connected to both ends of the solid-state relay 200, an aviation plug female terminal 202 connected to one of the experimental wires 201, a fixing block 300 fixed on the side wall of the base 100, a slide rail 302 fixed on the top surface of the fixing block 300, a moving block 303 slidably connected to the slide rail 302, a bracket 306 provided on the upper end of the moving block 303, and a phase switching component 400 mounted on the bracket 306;

[0031] The commutation assembly 400 includes a connecting block 401. Multiple first cylinders 402 are mounted on the top surface of the connecting block 401 via a mounting base. The piston rod of the first cylinder 402 passes through the connecting block 401. A clamping cylinder 403 is mounted on the bottom surface of the piston rod of the first cylinder 402. The finger tip of the clamping cylinder 403 clamps the aviation plug terminal 404. The aviation plug terminal 404 is inserted and engaged with the aviation plug female terminal 202.

[0032] The base 100 has multiple mounting slots 101 at both ends, and multiple upright blocks 301 are fixed on the top surface of the fixing block 300. The female end of the aviation plug 202 is installed on the upper end of the upright block 301. The upright block 301 provides stable support for the female end of the aviation plug 202, which facilitates the high-voltage experimental connection of the solid-state relay 200.

[0033] The top surface of the movable block 303 is provided with a T-shaped groove 304, and a slider 305 is slidably connected inside the T-shaped groove 304. The top surface of the slider 305 is fixedly connected to the top surface of the bracket 306. The piston rod of the second cylinder 310 pushes the slider 305 to slide horizontally in the T-shaped groove 304, so as to realize the accurate positioning and movement of the bracket 306.

[0034] A limiting groove 311 is provided on the bottom surface of the movable block 303. The groove wall of the limiting groove 311 is slidably connected to the outer wall of the slide rail 302. A lead screw 307 is threadedly connected to the movable block 303 through a threaded hole. Support blocks 308 are rotatably connected to the outer peripheral walls of both ends of the lead screw 307. The bottom surfaces of the two support blocks 308 are fixedly connected to the top surface of the fixed block 300. A forward and reverse motor 309 is mounted on the side wall of the fixed block 300 through a mounting base. The output shaft of the forward and reverse motor 309 is coaxially connected to the lead screw 307. The forward and reverse motor 309 drives the lead screw 307 to rotate. The lead screw 307 cooperates with the movable block 303 through the threaded hole, causing the movable block 303 to slide horizontally along the slide rail 302 through the limiting groove 311.

[0035] A second cylinder 310 is mounted on one end of the bottom surface of the slider 305 via a mounting base. The piston rod of the second cylinder 310 is fixedly connected to the moving block 303. The slider 305 adjusts its position through the piston rod of the second cylinder 310 to achieve accurate positioning and movement of the bracket 306.

[0036] Working principle: The movable block 303 slides on the slide rail 302. The bracket 306 set at the upper end of the movable block 303 is used to install the commutation component 400. By sliding the movable block 303 on the slide rail 302, the position of the commutation component 400 can be adjusted. By extending and retracting the piston rod of the first cylinder 402, the clamping cylinder 403 installed on its bottom surface moves up and down. The finger end of the clamping cylinder 403 clamps the aviation plug terminal 404. As the piston rod of the first cylinder 402 moves, the aviation plug terminal 404 is driven to different heights. By moving the bracket 306, the aviation plug terminal 404 moves closer to or away from the aviation plug female end 202 to complete the insertion or separation operation.

[0037] By controlling the extension and retraction of the piston rods of different first cylinders 402, different aviation plug terminals 404 are moved to achieve different plug-in combinations of aviation plug terminals 404 and aviation plug female terminals 202, thereby completing the phase sequence conversion. This avoids manual operation in high-voltage environments, reduces the risk of electric shock, and ensures the safety of operators. Compared with traditional contact methods, the plug-in connection method of aviation plug terminals 404 and aviation plug female terminals 202 provides more stable and reliable contact, reduces arc discharge caused by poor contact, extends the service life of the equipment, and reduces the impact of electromagnetic interference on the test equipment and test data, ensuring the stability of contact resistance during long-term use.

[0038] The mounting slots 101 at both ends of the base 100 are used to fix the device on the test platform to ensure stability. The upright block 301 on the top surface of the fixing block 300 supports the female end of the aviation plug 202, so that it is connected to the experimental wire 201. The forward and reverse motor 309 drives the lead screw 307 to rotate. The lead screw 307 cooperates with the moving block 303 through the threaded hole, driving the moving block 303 to slide horizontally along the slide rail 302 through the limiting groove 311. The piston rod of the second cylinder 310 pushes the slider 305 to slide horizontally in the T-shaped groove 304, realizing the accurate positioning and movement of the bracket 306 and reducing human operation error.

[0039] The piston rod of the first cylinder 402 on the connecting block 401 of the phase switching assembly 400 extends and retracts, driving the clamping cylinder 403 to adjust the vertical direction of the aviation plug terminal 404. The second cylinder 310 adjusts the aviation plug terminal 404 horizontally, so that the aviation plug terminal 404 is connected or disconnected from the aviation plug female terminal 202, realizing the switching of aviation plug terminal 404 and aviation plug female terminal 202 with different phase sequences, completing the phase sequence conversion, realizing different phase sequence arrangements and switching, and meeting different high-pressure test requirements.

[0040] Example 2: Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, based on Embodiment 1, it includes a base 100, and a solid-state relay 200 is mounted on the top surface of the base 100. The solid-state relay 200 is characterized in that: experimental wires 201 are respectively connected to both ends of the solid-state relay 200, and an aviation plug female terminal 202 is connected to one of the experimental wires 201. A fixing block 300 is fixedly provided on the side wall of the base 100, and a slide rail 302 is fixedly provided on the top surface of the fixing block 300. A moving block 303 is slidably connected to the slide rail 302. A bracket 306 is provided on the upper end of the moving block 303, and a commutation component 400 is mounted on the bracket 306.

[0041] The commutation assembly 400 includes a connecting block 401. Multiple first cylinders 402 are mounted on the top surface of the connecting block 401 via a mounting base. The piston rods of the first cylinders 402 pass through the connecting block 401. A clamping cylinder 403 is mounted on the bottom surface of the piston rods of the first cylinders 402. The fingertip of the clamping cylinder 403 clamps the aviation plug sub-terminal 404. The aviation plug sub-terminal 404 is inserted into the aviation plug female terminal 202. By controlling the extension and retraction height of the piston rod of the first cylinder 402 and the horizontal displacement of the moving block 303, the aviation plug sub-terminals 404 with different phase sequences can be combined and inserted into the aviation plug female terminal 202.

[0042] The base 100 has multiple mounting slots 101 at both ends, and multiple upright blocks 301 are fixed on the top surface of the fixing block 300. The female end of the aviation plug 202 is installed on the upper end of the upright block 301. The upright block 301 provides stable support for the female end of the aviation plug 202, which facilitates the high-voltage experimental connection of the solid-state relay 200.

[0043] Two grooves 405 are provided on the outer wall of the aviation plug terminal 404, and the finger end of the clamping cylinder 403 is inserted into the grooves 405 to improve the stable clamping of the clamping cylinder 403.

[0044] In use, when the piston rod of the first cylinder 402 extends, the clamping cylinder 403 clamps the aviation plug end 404 through the groove 405 and moves downward, so that the aviation plug end 404 and the aviation plug female end 202 are on the same central axis. Then, the piston rod of the second cylinder 310 retracts, causing the slider 305 to drive the bracket 306 to move synchronously, pushing the aviation plug end 404 to gradually approach the aviation plug female end 202 until the connection is completed. When removing, the piston rod of the second cylinder 310 extends, pushing the clamping cylinder 403 to move in the opposite direction, so that the aviation plug end 404 and the aviation plug female end 202 are separated.

[0045] Simultaneously, by controlling the extension and retraction height of the piston rod of the first cylinder 402 and the horizontal displacement of the moving block 303, the combination and insertion of the aviation plug female terminal 404 with different phase sequences and the aviation plug female terminal 202 are realized, thereby achieving rapid phase sequence replacement in high-voltage experiments, improving phase sequence conversion efficiency, and enhancing the high-voltage experiment effect.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-voltage test phase sequence switching device, comprising a base (100), wherein a solid-state relay (200) is mounted on the top surface of the base (100), characterized in that: The solid-state relay (200) has experimental wires (201) connected to both ends, and one of the experimental wires (201) is connected to an aviation plug female terminal (202). A fixing block (300) is fixed on the side wall of the base (100), and a slide rail (302) is fixed on the top surface of the fixing block (300). A moving block (303) is slidably connected to the slide rail (302), and a bracket (306) is provided on the upper end of the moving block (303). A commutation assembly (400) is installed on the bracket (306). The commutation assembly (400) includes a connecting block (401). A plurality of first cylinders (402) are mounted on the top surface of the connecting block (401) via a mounting base. The piston rod of the first cylinder (402) passes through the connecting block (401). A clamping cylinder (403) is mounted on the bottom surface of the piston rod of the first cylinder (402). The finger tip of the clamping cylinder (403) clamps the aviation plug sub-end (404). The aviation plug sub-end (404) is inserted and engaged with the aviation plug female end (202).

2. The high-voltage test phase sequence switching device as described in claim 1, characterized in that: The base (100) has multiple mounting slots (101) at both ends, and multiple upright blocks (301) are fixed on the top surface of the fixing block (300). The female end (202) of the aviation plug is installed on the upper end of the upright block (301).

3. The high-voltage test phase sequence switching device as described in claim 2, characterized in that: The top surface of the movable block (303) is provided with a T-shaped groove (304), and a slider (305) is slidably connected inside the T-shaped groove (304). The top surface of the slider (305) is fixedly connected to the top surface of the bracket (306).

4. The high-voltage test phase sequence switching device as described in claim 3, characterized in that: The bottom surface of the movable block (303) is provided with a limiting groove (311), the groove wall of the limiting groove (311) is slidably connected to the outer wall of the slide rail (302), and a lead screw (307) is threadedly connected to the movable block (303) through a threaded hole.

5. The high-voltage test phase sequence switching device as described in claim 4, characterized in that: The outer peripheral walls at both ends of the lead screw (307) are respectively rotatably connected to support blocks (308), and the bottom surfaces of the two support blocks (308) are respectively fixedly connected to the top surface of the fixed block (300).

6. The high-voltage test phase sequence switching device as described in claim 5, characterized in that: The side wall of the fixed block (300) is equipped with a forward and reverse motor (309) via a mounting base, and the output shaft of the forward and reverse motor (309) is coaxially connected to the lead screw (307).

7. The high-voltage test phase sequence switching device as described in claim 6, characterized in that: The second cylinder (310) is mounted on one end of the bottom surface of the slider (305) via a mounting base, and the piston rod of the second cylinder (310) is fixedly connected to the moving block (303).

8. The high-voltage test phase sequence switching device as described in claim 1, characterized in that: The outer wall of the aviation plug terminal (404) has two grooves (405), and the finger end of the clamping cylinder (403) is inserted into the grooves (405).

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