Withstand voltage test device for thyristor

Abstract

The utility model relates to the technical field of thyristor withstand voltage test devices, and discloses a withstand voltage test device for thyristors, which comprises a workbench, a test mechanism and a test board. According to the withstand voltage test device for the thyristor, through the arrangement of the test mechanism, during testing, a thyristor main body is inserted into six placement grooves formed in the surface of the test table, silica gel pads on the two sides are utilized to fix the thyristor main body, and a hydraulic rod on the top is matched to drive a pressure test plate to move; thyristor pins are inserted into the plugging ports in the six pressure testing ports at the bottom of the pressure testing plate, the plugging ports can adapt to the thyristor pins which deviate slightly and correct the thyristor pins at the same time, the testing precision is improved, and through pulling the sliding blocks on the two sides of the plugging ports and cooperating with the supporting springs on the back, the thyristor pins can be accurately tested. The plug pins are separated from the positioning holes arranged at the two sides of the plug interface, thereby facilitating the regular maintenance and replacement of the plug interface by a worker, and ensuring that the testing mechanism is always in an optimal working state.

Description

Technical Field

[0001] This utility model relates to the technical field of thyristor withstand voltage testing devices, and in particular to a withstand voltage testing device for thyristors. Background Technology

[0002] A thyristor is a high-power semiconductor device with a four-layer structure and three PN junctions. It has wide applications in power electronics, such as controlled rectification, AC voltage regulation, contactless electronic switches, inverters, and frequency converters. Before a thyristor is put into practical use, performing a withstand voltage test is a crucial step to ensure its performance and reliability. The withstand voltage test can detect whether the thyristor can operate normally under a specified voltage and whether it will exhibit failure phenomena such as breakdown, thereby screening out qualified products and ensuring the safe and stable operation of power electronic equipment.

[0003] Existing thyristor withstand voltage testing devices cannot test thyristors with slight pin misalignment in their pin interfaces and lack pin correction functionality, resulting in low testing accuracy and efficiency. Furthermore, the lack of a heat dissipation device during testing leads to excessive heat accumulation, causing the thyristor temperature to rise and affecting its electrical performance, potentially even causing damage due to overheating. This impacts the accuracy of test results and the thyristor's lifespan. Therefore, a withstand voltage testing device for thyristors is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a withstand voltage testing device for thyristors, which solves the problems mentioned in the background art. Existing thyristor withstand voltage testing devices cannot test thyristors with slight pin offsets due to their pin connectors, lack a function to correct thyristor pins, resulting in low testing accuracy and efficiency. Furthermore, the lack of a heat dissipation device during testing leads to excessive heat accumulation, causing the thyristor temperature to rise, affecting its electrical performance, and potentially even causing damage due to overheating, thus impacting the accuracy of test results and the lifespan of the thyristor.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a withstand voltage testing device for thyristors, comprising a workbench, a testing mechanism and a test platform, wherein a motor box is fixedly connected to the bottom of the workbench, a lifting mechanism is fixedly installed through the workbench, a bracket is fixedly connected to the left side of the workbench, the testing mechanism is fixedly connected to the surface of the bracket, and two upright plates are fixedly connected to both sides of the test platform, and heat dissipation mechanisms are provided on both sides of the upright plates;

[0006] The lifting mechanism includes a drive motor fixedly connected inside a motor housing. A fixed cylinder is fixedly connected to the output end of the drive motor. A threaded hole is formed inside the fixed cylinder, and a threaded lifting rod is threaded into the threaded hole. The testing mechanism includes a pressure gauge fixedly connected to the surface of a support. A display device is electrically connected to the upper end of the pressure gauge via a power cord. A pressure testing plate is fixedly connected to one side of the support. Six pressure testing interfaces are installed at the bottom of the pressure testing plate. The pressure gauge is electrically connected to the pressure testing plate via a power cord. Each pressure testing interface has a placement slot, and three insertion interfaces are inserted into the placement slot. The connector has positioning holes on both sides of its bottom. A pin is inserted into each positioning hole. A slider is fixedly connected to one side of the pin. A telescopic column is fixedly connected to one side of the slider. A support spring is fixedly connected to one side of the telescopic column. A fixing column is fixedly connected to one side of the support spring. One end of the connector is tapered, and the other end is cylindrical. The length of the tapered structure is less than the length of the thyristor pin. The diameter of the hole in the inner wall of the cylindrical structure is adapted to the thyristor pin. The heat dissipation mechanism includes heat dissipation holes on both sides of the upright plate. A cooling fan is installed inside each heat dissipation hole, and a dustproof mesh is installed on the surface of the cooling fan.

[0007] As a further embodiment of this utility model, a test platform is fixedly connected to the top of the threaded lifting rod. The surface of the test platform is provided with six placement slots, which serve to install the thyristor body.

[0008] As a further embodiment of this utility model, two silicone pads are fixedly connected inside the placement groove, and the thyristor body is attached to one side of the silicone pad. The silicone pads serve to fix the thyristor body.

[0009] As a further embodiment of this utility model, four telescopic rods are fixedly connected to the bottom of the test platform, and the telescopic rods are fixedly connected to the top of the workbench. The telescopic rods serve to limit the movement of the test platform.

[0010] As a further embodiment of this utility model, a horizontal plate is fixedly installed on one side of the bracket, and a hydraulic pump and a hydraulic rod are installed through the upper and lower parts of the horizontal plate. The hydraulic rod is fixedly connected to the top of the pressure measuring plate. The hydraulic rod is used to drive the pressure measuring plate to move.

[0011] As a further embodiment of this utility model, two support plates are fixedly connected to the bottom of the workbench. The support plates are placed on the ground, and the support plates serve to support the workbench.

[0012] As a further embodiment of this utility model, a connecting groove is provided on the surface of the display device, and six indicator lights are installed inside the connecting groove. The six indicator lights correspond one-to-one with six pressure measuring interfaces. The connecting groove serves to install the indicator lights.

[0013] This invention provides a withstand voltage testing device for thyristors, which has the following advantages:

[0014] This withstand voltage testing device for thyristors, through the setting of the testing mechanism, inserts the thyristor body into the six placement slots opened on the surface of the test bench during testing. The thyristor body is fixed by silicone pads on both sides. With the help of the hydraulic rod at the top, the pressure testing plate is moved to insert the thyristor pins into the insertion interfaces inside the six pressure testing interfaces at the bottom of the pressure testing plate. The design of the insertion interfaces can accommodate thyristor pins that have experienced slight misalignment, and at the same time correct them, thereby improving the accuracy of the test.

[0015] 2. This withstand voltage testing device for thyristors can separate the pin from the positioning holes on both sides of the connector by pulling the sliders on both sides of the connector and cooperating with the support spring on the back. This makes it convenient for staff to regularly maintain and replace the connector and ensure that the testing mechanism is always in the best working condition.

[0016] 3. This withstand voltage testing device for thyristors features a lifting mechanism with a drive motor at the bottom of the test platform. The drive motor rotates the fixed cylinder at the top, causing the threaded lifting rod inside the fixed cylinder to adjust the height of the test platform. This allows the device to be used by staff of different heights, improving its practicality.

[0017] 4. This withstand voltage testing device for thyristors, through the design of a heat dissipation mechanism, addresses the issue that during use, the thyristor withstands a high voltage, and current flows through it. The thyristor generates heat due to its own resistance. If heat is not dissipated effectively and promptly, excessive heat accumulation will cause the thyristor temperature to rise, affecting its electrical performance and potentially causing damage due to overheating. This impacts the accuracy of test results and the thyristor's lifespan. Therefore, uprights are installed on both sides of the test bench, with cooling fans mounted on their surfaces. These fans dissipate heat from the thyristors on the test bench surface, preventing excessive temperature and shortening their lifespan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the lifting mechanism of this utility model;

[0020] Figure 3This is a schematic diagram of the testing mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the test bench structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the test interface structure of this utility model.

[0023] In the diagram: 1. Workbench; 2. Motor housing; 3. Lifting mechanism; 301. Drive motor; 302. Fixed cylinder; 303. Threaded lifting rod; 4. Bracket; 5. Testing mechanism; 501. Pressure gauge; 502. Display device; 503. Pressure measuring plate; 504. Pressure measuring interface; 505. Plug interface; 506. Pin; 507. Slider; 508. Telescopic column; 509. Support spring; 510. Fixed column; 6. Test bench; 7. Silicone pad; 8. Thyristor pin; 9. Telescopic rod; 10. Hydraulic rod; 11. Support plate; 12. Indicator light; 13. Vertical plate; 14. Heat dissipation mechanism; 1401. Cooling fan; 1402. Dustproof net. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a withstand voltage testing device for thyristors, including a workbench 1, a testing mechanism 5 and a testing platform 6. A motor box 2 is fixedly connected to the bottom of the workbench 1, and a lifting mechanism 3 is fixedly installed through the workbench 1. A bracket 4 is fixedly connected to the left side of the workbench 1, and the testing mechanism 5 is fixedly connected to the surface of the bracket 4. Two upright plates 13 are fixedly connected to both sides of the testing platform 6, and heat dissipation mechanisms 14 are provided on both sides of the upright plates 13.

[0026] The lifting mechanism 3 includes a drive motor 301 fixedly connected inside the motor housing 2. A fixed cylinder 302 is fixedly connected to the output end of the drive motor 301. A threaded hole is opened inside the fixed cylinder 302, and a threaded lifting rod 303 is threadedly connected inside the threaded hole. The testing mechanism 5 includes a pressure gauge 501 fixedly connected to the surface of the bracket 4. A display device 502 is electrically connected to the upper end of the pressure gauge 501 via a power cord. A pressure testing plate 503 is fixedly connected to one side of the bracket 4. Six pressure testing interfaces 504 are installed at the bottom of the pressure testing plate 503. The pressure gauge 501 and the pressure testing plate 503 are electrically connected via a power cord. A placement slot is provided inside the pressure testing interface 504, and three insertion interfaces 505 are inserted into the placement slot. The base of interface 505 has positioning holes on both sides. A pin 506 is inserted into the positioning hole. A slider 507 is fixedly connected to one side of the pin 506. A telescopic column 508 is fixedly connected to one side of the slider 507. A support spring 509 is fixedly connected to one side of the telescopic column 508. A fixing column 510 is fixedly connected to one side of the support spring 509. One end of the interface 505 is conical and the other end is cylindrical. The length of the conical structure is less than the length of the thyristor pin 8. The diameter of the hole in the inner wall of the cylindrical structure is adapted to the thyristor pin 8. The heat dissipation mechanism 14 includes heat dissipation holes on both sides of the vertical plate 13. A cooling fan 1401 is installed inside the heat dissipation holes. A dustproof net 1402 is installed on the surface of the cooling fan 1401.

[0027] The top of the threaded lifting rod 303 is fixedly connected to the test platform 6. The surface of the test platform 6 is provided with six placement slots, which serve to install the thyristor body.

[0028] The inside of the placement slot has two silicone pads 7 fixedly connected. One side of the silicone pad 7 overlaps the thyristor body. The silicone pad 7 serves to fix the thyristor body.

[0029] Four telescopic rods 9 are fixedly connected to the bottom of the test bench 6. The telescopic rods 9 are fixedly connected to the top of the workbench 1. The telescopic rods 9 serve to limit the movement of the test bench 6.

[0030] A horizontal plate is fixedly installed on one side of the bracket 4. A hydraulic pump and a hydraulic rod 10 are installed through the upper and lower parts of the horizontal plate. The hydraulic rod 10 is fixedly connected to the top of the pressure measuring plate 503. The hydraulic rod 10 plays the role of driving the pressure measuring plate 503 to move.

[0031] Two support plates 11 are fixedly connected to the bottom of the workbench 1. The support plates 11 are attached to the ground and serve to support the workbench 1.

[0032] The surface of the display device 502 has a connecting groove, and six display lamps 12 are installed inside the connecting groove. The six display lamps 12 correspond one-to-one with the six pressure measuring interfaces 504. The connecting groove serves to install the display lamps 12.

[0033] In this invention, the working steps of the device are as follows:

[0034] First step: When using the equipment, since the staff are of different heights, it is not convenient to operate the equipment. Therefore, a drive motor 301 is installed at the bottom of the test platform 6. The drive motor 301 drives the top fixed cylinder 302 to rotate, so that the threaded lifting rod 303 connected inside the fixed cylinder 302 drives the top test platform 6 to adjust its height.

[0035] The second step: During testing, the thyristor body is inserted into the six placement slots on the surface of the test bench 6. The silicone pads 7 on both sides are used to fix the thyristor body. The hydraulic rod 10 at the top moves the pressure testing plate 503, inserting the thyristor pins 8 into the insertion interfaces 505 inside the six pressure testing interfaces 504 at the bottom of the pressure testing plate 503. The design of the insertion interfaces 505 can accommodate the thyristor pins 8 that have a slight deviation, and correct them at the same time, improving the test accuracy while ensuring the quality of the thyristor. The indicator light 12 can be used to determine whether the thyristor has passed the withstand voltage test. Pulling the sliders 507 on both sides of the insertion interface 505, in conjunction with the support spring 509 on the back, causes the pins 506 to separate from the positioning holes on both sides of the insertion interface 505, which is convenient for the staff to maintain and replace the insertion interface 505 regularly.

[0036] The third step: upright plates 13 are set on both sides of the test bench 6. Cooling fans 1401 are installed on the surface of the upright plates 13. The cooling fans 1401 dissipate heat from the thyristors on the surface of the test bench 6 to prevent excessive heat accumulation from causing the thyristor temperature to rise, which in turn affects its electrical performance, the accuracy of the test results and the service life of the thyristors.

[0037] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific structure of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0038] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A withstand voltage testing device for thyristors, comprising a workbench (1), a testing mechanism (5), and a testing table (6), characterized in that: A motor housing (2) is fixedly connected to the bottom of the workbench (1), and a lifting mechanism (3) is fixedly installed through the workbench (1). A bracket (4) is fixedly connected to the left side of the workbench (1), and a testing mechanism (5) is fixedly connected to the surface of the bracket (4). Two upright plates (13) are fixedly connected to both sides of the testing platform (6), and a heat dissipation mechanism (14) is provided on both sides of the upright plate (13). The lifting mechanism (3) includes a drive motor (301) fixedly connected inside the motor housing (2). The output end of the drive motor (301) is fixedly connected to a fixed cylinder (302). The fixed cylinder (302) has a threaded hole inside, and a threaded lifting rod (303) is threadedly connected inside the threaded hole. The testing mechanism (5) includes a pressure gauge (501) fixedly connected to the surface of the bracket (4). A display device (502) is electrically connected to one side of the pressure gauge (501) via a power cord. A pressure measuring plate (503) is fixedly connected to one side of the bracket (4). Six pressure measuring interfaces (504) are installed at the bottom of the pressure measuring plate (503). The pressure gauge (501) and the pressure measuring plate (503) are electrically connected via a power cord. A placement slot is provided inside the pressure measuring interface (504). Three insertion interfaces (505) are inserted into the placement slot. The bottom of the insertion interface (505) Positioning holes are provided on both sides. A pin (506) is inserted into the positioning hole. A slider (507) is fixedly connected to one side of the pin (506). A telescopic column (508) is fixedly connected to one side of the slider (507). A support spring (509) is fixedly connected to one side of the telescopic column (508). A fixing column (510) is fixedly connected to one side of the support spring (509). One end of the insertion interface (505) is conical and the other end is cylindrical. The length of the conical structure is less than the length of the thyristor pin (8). The diameter of the hole in the inner wall of the cylindrical structure is adapted to the thyristor pin (8). The heat dissipation mechanism (14) includes heat dissipation holes on both sides of the upright plate (13), and a heat dissipation fan (1401) is installed inside the heat dissipation hole. A dustproof net (1402) is installed on the surface of the heat dissipation fan (1401).

2. The withstand voltage testing device for thyristors according to claim 1, characterized in that: The top of the threaded lifting rod (303) is fixedly connected to a test platform (6), and the surface of the test platform (6) is provided with six placement slots.

3. The withstand voltage testing device for thyristors according to claim 2, characterized in that: Two silicone pads (7) are fixedly connected inside the placement slot, and a thyristor body is attached to one side of the silicone pad (7).

4. The withstand voltage testing device for thyristors according to claim 2, characterized in that: The bottom of the test bench (6) is fixedly connected to four telescopic rods (9), which are fixedly connected to the top of the workbench (1).

5. The withstand voltage testing device for thyristors according to claim 1, characterized in that: A horizontal plate is fixedly installed on one side of the bracket (4), and a hydraulic pump and a hydraulic rod (10) are installed through the upper and lower parts of the horizontal plate. The hydraulic rod (10) is fixedly connected to the top of the pressure measuring plate (503).

6. The withstand voltage testing device for thyristors according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to two support plates (11), which are attached to the ground.

7. The withstand voltage testing device for thyristors according to claim 1, characterized in that: The surface of the display device (502) is provided with a connection groove, and six display lamps (12) are installed inside the connection groove. The six display lamps (12) correspond one-to-one with the six pressure measuring interfaces (504).

Images