A power device gravity type sorting test capsule

Abstract

The application relates to the technical field of power device testing, and relates to a power device gravity type sorting test cabin, which comprises a feeding bin provided with an air exhaust pipe, a first sealing door arranged at the inlet end of the feeding bin, a test bin connected with the lower end of the feeding bin, a second sealing door arranged between the feeding bin and the test bin, a discharging bin connected with the lower end of the test bin, a third sealing door arranged between the discharging bin and the test bin, wherein the air pressure in the discharging bin is lower than the atmospheric pressure, a fourth sealing door arranged at the outlet of the discharging bin, and an air inlet pipe and an air outlet pipe arranged in the test bin and corresponding provided with valves and air pressure gauges. The application can further guarantee the stability of the test and the device state.

Description

Technical Field

[0001] This application relates to the technical field of power device testing, and in particular to a gravity-type sorting test chamber for power devices. Background Technology

[0002] Traditional testing methods for power devices often involve manual high-voltage testing, which is inefficient. Furthermore, these methods are susceptible to various environmental interferences, such as humidity, dust particles, and changes in air pressure, leading to false positives, misjudged breakdowns, and decreased device withstand voltage.

[0003] Existing technology uses a mechanical mechanism to drive and test the withstand voltage of power devices with a high-voltage instrument, which improves efficiency, but does not solve the problem of interference from environmental factors, and is prone to producing large errors. Utility Model Content

[0004] To address the aforementioned technical issues, this application provides a gravity-type sorting test chamber for power devices.

[0005] This application provides a gravity-type sorting test chamber for power devices, employing the following technical solution: A gravity-type sorting test chamber for power devices includes: The feed hopper is equipped with an exhaust pipe, and the inlet end of the feed hopper is equipped with a first sealing door; The test chamber is connected to the lower end of the feed chamber, and a second sealing door is provided between the feed chamber and the test chamber; The discharge hopper is connected to the lower end of the test hopper. A third sealing door is provided between the discharge hopper and the test hopper. The air pressure inside the discharge hopper is lower than atmospheric pressure. A fourth sealing door is provided at the outlet of the discharge hopper. The test chamber is equipped with an air inlet pipe and an air outlet pipe, and is equipped with corresponding valves and pressure gauges.

[0006] By adopting the above technical solution, during use, the power device is first placed into the feeding hopper through the first sealed door. After closing the first sealed door, the feeding hopper is pre-treated with air pressure using an exhaust pipe (such as removing dust or adjusting to near the air pressure of the test chamber). Then, the second sealed door is opened, and the device enters the test chamber by gravity. The second sealed door is closed, and the air pressure of the test chamber is adjusted to the target value through the air inlet / outlet pipe and valve (monitored in real time by a pressure gauge). Under this stable air pressure environment, the high-pressure sorting test is completed. After the test, the third sealed door is opened, and the device enters the discharge hopper (because the air pressure in the discharge hopper is lower than atmospheric pressure, it can reduce the amount of dust / moisture brought in by backflow from the outside air). Finally, it is taken out through the fourth sealed door.

[0007] Optionally, it also includes a guide rail, which passes through the feed hopper, test hopper and discharge hopper from top to bottom, and the power device is slidably installed in the guide rail.

[0008] By adopting the above technical solution, after the power device is placed in the feeding bin, it slides along the guide rail into the testing bin and the discharging bin, and the guide rail provides a fixed movement path for the device.

[0009] Optionally, a first channel is provided between the feeding hopper and the testing hopper for the guide rail to pass through. A first partition door that can be opened and closed is provided in the first channel. A second sealing door is located in the first channel, and a first transfer cavity is formed by sealing between the first partition door and the second sealing door.

[0010] By adopting the above technical solution, the first transfer chamber forms an "air pressure buffer zone", which avoids the instantaneous exchange of air pressure between the feed chamber and the test chamber when the second sealing door is opened directly (if the air pressure difference between the feed chamber and the test chamber is large when the feed chamber is not pre-treated), and effectively maintains the stability of the air pressure in the test chamber.

[0011] Optionally, a second channel is provided between the test chamber and the discharge chamber for the guide rail to pass through, the third sealing door is located in the second channel, and a second partition door that can be opened and closed is provided in the second channel, forming a second transfer cavity between the second partition door and the third sealing door.

[0012] By adopting the above technical solution, when the device enters the discharge chamber from the test chamber, the second partition door is opened first. After the device enters the second transfer chamber, the second partition door is closed. The air pressure in the transfer chamber is adjusted to be consistent with that in the discharge chamber (which is lower than atmospheric pressure). Then, the third sealing door is opened to allow the device to enter the discharge chamber, similar to the first transfer chamber. The second transfer chamber avoids direct air pressure exchange between the test chamber and the discharge chamber (because the air pressure in the discharge chamber is lower than atmospheric pressure, directly opening the door would cause a sudden drop in air pressure in the test chamber), ensuring stable air pressure in the test chamber during continuous testing and guaranteeing the accuracy of subsequent tests.

[0013] Optionally, a slide plate is slidably connected to the guide rail, and the slide plate slides downward along the guide rail under the action of gravity, with the power device mounted on the slide plate.

[0014] By adopting the above technical solution, the slide plate, as a carrier, can more stably fix the device (avoiding device falling off or tilting) compared to the device sliding directly, ensuring the device's posture is consistent during testing and improving the stability of test data.

[0015] Optionally, a receiving plate is provided inside the test chamber on the guide rail. The receiving plate is slidably mounted on the guide rail, and the sliding direction of the receiving plate is perpendicular to the direction of the guide rail.

[0016] By adopting the above technical solution, the receiving plate achieves precise dwelling of the device in the test chamber, solving the problem of "the device cannot stay stably for testing" under gravity sliding conditions, and ensuring sufficient operation time for high-voltage sorting tests.

[0017] Optionally, the thickness of the two ends of the slide plate is greater than the thickness of the middle part of the slide plate, and the two ends of the slide plate slide in contact with the two vertical sidewalls of the guide rail respectively.

[0018] By adopting the above technical solution, the thick parts at both ends contact the side wall of the guide rail to form a "two-point guide" structure, which avoids the left and right swaying when the slide slides down, ensures the accuracy of the movement path (such as aligning with the test probe in the test chamber), and reduces test errors caused by positional deviation.

[0019] Optionally, at least two pulleys are installed at both ends of the skateboard.

[0020] By adopting the above technical solution, multiple pulleys (at least two) further improve the support stability of the skateboard, prevent the skateboard from tilting, reduce wear on the skateboard ends, and extend the service life of the equipment.

[0021] In summary, this application includes at least one of the following beneficial effects: 1. Through the multi-chamber sealing structure, external humidity and dust particles can be isolated, and the air pressure of the test environment can be stabilized. At the same time, the low air pressure setting of the discharge chamber reduces the secondary impact of external air backflow on the tested device, further ensuring the stability of the test and device status. 2. The guide rail, gravity-driven slide plate and pulley structure provide a precise and smooth movement path for power devices. The design of the receiving plate solves the problem that the devices cannot stay stably under gravity sliding, ensuring sufficient operation time for testing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is an internal cross-sectional view of an embodiment of this application; Figure 3 This is a cross-sectional schematic diagram illustrating the first transfer cavity and the second transfer cavity in an embodiment of this application; Figure 4 This is a schematic diagram of the overall structure of the skateboard according to an embodiment of this application.

[0023] Explanation of reference numerals in the attached drawings: 100, Feed hopper; 110, First sealing door; 120, Air extraction pipe; 200, Test chamber; 210, Air inlet pipe; 220, Air outlet pipe; 230, Valve; 240, Pressure gauge; 300, Discharge hopper; 310, Fourth sealing door; 400, Second sealing door; 500, Third sealing door; 600, First channel; 610, First partition door; 620, First transfer chamber; 700, Second channel; 710, Second partition door; 720, Second transfer chamber; 800, Guide rail; 900, Slide plate; 910, Pulley; 10, Receiving plate. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0025] This application discloses a gravity-type sorting test chamber for power devices.

[0026] Reference Figure 1 A gravity-type sorting and testing chamber for power devices is disclosed. The overall structure is based on a chamber body, combined with guiding and transfer components, to achieve efficient and stable testing of power devices. Its core comprises a feeding chamber 100, a testing chamber 200, and a discharging chamber 300 connected sequentially from top to bottom. Each chamber is pressure-isolated through a sealing structure and transfer design, while gravity-driven transfer of devices is achieved using guide rails 800 and sliding plates 900. The test components within the testing chamber 200 are prior art and are not shown in the accompanying drawings, nor will they be described in detail.

[0027] Reference Figure 2 Specifically, the inlet end of the feeding hopper 100 is equipped with a first sealing door 110 for placing components and sealing the hopper. The feeding hopper 100 is also equipped with an exhaust pipe 120, which can be used for internal air pressure pretreatment or dust removal. The lower end of the feeding hopper 100 is connected to the testing hopper 200, with a second sealing door 400 between them. The testing hopper 200, as the core testing area, is equipped with an air inlet pipe 210 and an air outlet pipe 220, with valves 230 and pressure gauges 240 installed at corresponding positions. The air pressure inside the hopper can be adjusted through valves 230 and monitored in real time by pressure gauges 240 to ensure a stable testing environment. The lower end of the testing hopper 200 is connected to the discharge hopper 300, with a third sealing door 500 between them. The discharge hopper 300 is kept at a pressure lower than atmospheric pressure, and a fourth sealing door 310 is installed at the outlet end to reduce the impact of backflow of external air.

[0028] Reference Figure 2 and Figure 3 In addition, the equipment also includes a guide rail 800 that runs through the entire length of the equipment, passing through the feed hopper 100, the test hopper 200, and the discharge hopper 300 from top to bottom. A first channel 600 is provided between the feed hopper 100 and the test hopper 200 for the guide rail 800 to pass through. A first partition door 610 that can be opened and closed is arranged in parallel within the first channel 600. The first partition door 610 and a second sealing door 400 are sealed to form a first transfer cavity 620, thereby buffering the air pressure difference between the feed hopper 100 and the test hopper 200.

[0029] Reference Figure 3A second channel 700 is provided between the test chamber 200 and the discharge chamber 300 for the guide rail 800 to pass through. The second channel 700 is provided with a second partition door 710 that can be opened and closed. A second transfer chamber 720 is formed between the second partition door 710 and the third sealing door 500 to prevent direct air pressure communication between the test chamber 200 and the discharge chamber 300.

[0030] Reference Figure 3 A slide plate 900 is slidably connected to the guide rail 800. Power devices are mounted on the slide plate 900. The slide plate 900 slides downward along the guide rail 800 under the action of gravity.

[0031] Reference Figure 4 To improve the stability of the skateboard 900, the thickness at both ends of the skateboard 900 is greater than that in the middle, and the two ends slide in contact with the two vertical side walls of the guide rail 800 respectively. At the same time, at least two pulleys 910 are installed at both ends to convert sliding friction into rolling friction.

[0032] Reference Figure 3 A receiving plate 10 is installed on the portion of the guide rail 800 within the test chamber 200. The receiving plate 10 slides perpendicular to the guide rail 800 and can slide out to support the slide plate 900 when it slides down to the test chamber 200, ensuring that the device remains stably in the designated position within the test chamber 200 to complete the test. After the test, the receiving plate 10 slides back, and the slide plate 900 continues to slide down to the discharge chamber 300. A driving component, such as a cylinder, is installed outside the test chamber 200 to drive the receiving plate 10. The piston rod of the cylinder is connected to a push rod, which is slidably and sealed on the test chamber 200. One end of the push rod is fixedly connected to the receiving plate 10, facilitating control over how the receiving plate 10 slides.

[0033] It should be added that all sealing doors and partition doors are controlled to open and close via cylinders. After exiting the discharge hopper 300, the power devices are then sorted into qualified and unqualified products.

[0034] The implementation principle of a gravity-type sorting test chamber for power devices in this application embodiment is as follows: The multi-compartment sealing and transfer design effectively isolates external environmental interference and ensures test accuracy. With the cooperation of components such as guide rail 800, slide plate 900, and receiving plate 10, gravity is used as the driving force to achieve efficient flow and precise stopping of the device, which takes into account both test efficiency and stability and solves the problems of large environmental interference and low efficiency in traditional testing.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gravity-type sorting test chamber for power devices, characterized in that, include: The feed hopper (100) is equipped with an exhaust pipe (120), and the inlet end of the feed hopper (100) is equipped with a first sealing door (110). The test chamber (200) is connected to the lower end of the feed chamber (100), and a second sealing door (400) is provided between the feed chamber (100) and the test chamber (200). The discharge hopper (300) is connected to the lower end of the test hopper (200). A third sealing door (500) is provided between the discharge hopper (300) and the test hopper (200). The air pressure inside the discharge hopper (300) is lower than atmospheric pressure. A fourth sealing door (310) is provided at the outlet of the discharge hopper (300). The test chamber (200) is equipped with an air inlet pipe (210) and an air outlet pipe (220), and is equipped with a valve (230) and a pressure gauge (240) respectively.

2. The gravity-type sorting test chamber for power devices according to claim 1, characterized in that, It also includes a guide rail (800) that passes through the feed bin (100), the test bin (200) and the discharge bin (300) from top to bottom, and the power device is slidably installed in the guide rail (800).

3. The gravity-type sorting test chamber for power devices according to claim 2, characterized in that, A first channel (600) for the guide rail (800) to pass through is provided between the feeding hopper (100) and the testing hopper (200). A first partition door (610) that can be opened and closed is provided in the first channel (600). A second sealing door (400) is located in the first channel (600), and a first transfer cavity (620) is formed by sealing between the first partition door (610) and the second sealing door (400).

4. The gravity-type sorting test chamber for power devices according to claim 3, characterized in that, A second channel (700) is provided between the test chamber (200) and the discharge chamber (300) for the guide rail (800) to pass through. The third sealing door (500) is located in the second channel (700). A second partition door (710) that can be opened and closed is provided in the second channel (700). A second transfer cavity (720) is formed between the second partition door (710) and the third sealing door (500).

5. The gravity-type sorting test chamber for power devices according to claim 2, characterized in that, A slide plate (900) is slidably connected to the guide rail (800). The slide plate (900) slides downward along the guide rail (800) under the action of gravity. The power device is mounted on the slide plate (900).

6. The gravity-type sorting test chamber for power devices according to claim 5, characterized in that, The guide rail (800) has a support plate (10) inside the test chamber (200). The support plate (10) is slidably installed on the guide rail (800). The sliding direction of the support plate (10) is perpendicular to the direction of the guide rail (800).

7. A gravity-type sorting test chamber for power devices according to claim 6, characterized in that, The thickness of the two ends of the slide plate (900) is greater than the thickness of the middle part of the slide plate (900), and the two ends of the slide plate (900) slide in contact with the two vertical side walls of the guide rail (800).

8. The gravity-type sorting test chamber for power devices according to claim 7, characterized in that, At least two pulleys (910) are installed at both ends of the skateboard (900).

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