Bulging test equipment for aluminum electrolytic capacitor

Abstract

The invention discloses an aluminum electrolytic capacitor bump test device. The device comprises a fixed cylinder; the device further comprises a testing mechanism which is arranged in the fixing cylinder. The improved aluminum electrolytic capacitor bump test equipment can automatically complete the connection between the aluminum electrolytic capacitor and the aluminum electrolytic capacitor test device and the bump test of the aluminum electrolytic capacitor, and determines the bump degree of the aluminum electrolytic capacitor according to the internal air pressure change. When the aluminum electrolytic capacitor bumps to a specific degree, the aluminum electrolytic capacitor and the aluminum electrolytic capacitor testing device are disconnected in time, so that the operation of the aluminum electrolytic capacitor is stopped in time, and the fracture rate of the aluminum electrolytic capacitor can be greatly reduced; when the aluminum electrolytic capacitor is broken, harmful gas can be automatically pumped out of the device and injected into the container for storage, an operator does not inhale the harmful gas to affect the health of the operator, the bulge test effect of the aluminum electrolytic capacitor is good, and the device is convenient to operate and high in automation degree.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum electrolytic capacitor bulge testing equipment, and in particular to aluminum electrolytic capacitor bulge testing equipment. Background Art

[0002] Aluminum electrolytic capacitors are made of an aluminum cylinder as the negative electrode, filled with liquid electrolyte, and a curved aluminum strip inserted as the positive electrode. They also need to be treated with DC voltage to form an oxide film on the positive electrode as a dielectric. They are characterized by large capacity, but large leakage, poor stability, and positive and negative polarity. They are suitable for power supply filtering or low-frequency circuits. During the production process of aluminum electrolytic capacitors, aluminum electrolytic capacitor bulge test equipment is generally used to perform aluminum electrolytic capacitor bulge test to ensure the quality of aluminum electrolytic capacitor products.

[0003] During the production process of aluminum electrolytic capacitors, a cross groove is generally provided on the top of the aluminum electrolytic capacitor to perform internal pressure relief treatment. This means that when the aluminum electrolytic capacitor bulges, deformation will only occur at the top of the aluminum electrolytic capacitor. Some existing aluminum electrolytic capacitor testing equipment generally only performs bulge tests on the ends of the aluminum electrolytic capacitor. During the test, the deformation of the aluminum electrolytic capacitor shell is generally monitored. However, during the test of the aluminum electrolytic capacitor, it is inevitable that the top of some aluminum electrolytic capacitors will rupture, causing the internal gas to leak, resulting in a small amount of harmful gas in the air outside the device, affecting the health of the operator. Summary of the Invention

[0004] The object of the present invention is to provide an aluminum electrolytic capacitor bulge testing device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an aluminum electrolytic capacitor bulge testing device, comprising a fixing cylinder; Also includes: A testing mechanism, the testing mechanism being disposed in the fixed cylinder and performing a bulge test on the aluminum electrolytic capacitor; The power connection mechanism is arranged above the fixed cylinder and connects the aluminum electrolytic capacitor to the external power supply. The outer peripheral side of the fixed cylinder is provided with an air suction mechanism, and the air suction mechanism absorbs and stores harmful gases.

[0006] Preferably, the testing mechanism includes a limiting ring, which is fixedly installed at the middle position in the fixed cylinder, and a push rod with a T-shape is passed through the center position in the limiting ring, and a pressure sensor is fixedly passed through the center position of the bottom side of the fixed cylinder where the outer peripheral wall of the push rod is connected to the inner wall of the fixed cylinder.

[0007] By adopting the above technical solution, the setting of the limit ring can support and limit the aluminum electrolytic capacitor without affecting the bulging of the aluminum electrolytic capacitor. When the aluminum electrolytic capacitor bulges, the push rod is pushed to compress the air at the bottom of the fixed cylinder, and the bulging condition of the aluminum electrolytic capacitor is determined by monitoring the pressure change at the bottom of the fixed cylinder through the pressure sensor. The bulging test effect of the aluminum electrolytic capacitor is good.

[0008] Preferably, two T-shaped limit blocks are relatively slidably provided on the outer peripheral side of the top of the fixed cylinder, two springs are relatively provided between the limit blocks and the outer peripheral wall of the fixed cylinder, and the two ends of each spring are respectively fixedly connected to the corresponding limit blocks and the outer peripheral wall of the fixed cylinder, and the end of the limit block located in the fixed cylinder is arranged in an arc shape.

[0009] By adopting the above technical solution, the limit block with an arc surface at one end makes it easier to move the limit block to the top side of the aluminum electrolytic capacitor. The setting of the spring can constrain the limit block so that the limit block automatically resets and moves without being subjected to external force, and the operator does not need to perform other operations.

[0010] Preferably, two limiting strips are provided on the outer peripheral side of the push rod, and both ends of the limiting strips are fixedly connected to the inner wall of the fixed cylinder, where the limiting strips are connected to the outer peripheral wall of the push rod.

[0011] By adopting the above technical solution, the setting of the limit bar can constrain and limit the moving trajectory of the push rod, so that the push rod can move back and forth in the vertical direction, avoiding the angle tilt generated during the movement of the push rod affecting the push rod's pressing on the gas at the bottom of the fixed cylinder.

[0012] Preferably, the power connection mechanism includes a push plate, which is arranged above the fixed cylinder, and two electric shock blocks are relatively fixedly penetrated on the bottom side of the push plate. A soft ring is fixedly installed on the bottom side of the push plate, and the soft ring is sleeved on the outer peripheral side of the two electric shock blocks. A piston rod is fixedly installed at the center position of the top side of the push plate, and the top sliding sleeve of the piston rod is provided with a piston cylinder.

[0013] By adopting the above technical solution, as the gas in the piston cylinder is injected, the piston rod is pushed out of the piston cylinder, and then the push plate is pushed toward the fixed cylinder. At this time, the push plate and the fixed cylinder squeeze the soft ring from both sides of the soft ring, and the soft ring shrinks and deforms to fit tightly with the top opening of the fixed cylinder, thereby completing the sealing of the top opening of the fixed cylinder while the contact block contacts the contact sheet of the aluminum electrolytic capacitor.

[0014] Preferably, the air intake mechanism includes a valve core, which is fixedly installed on the outer peripheral wall of the fixed cylinder and located between the limiting ring and the push rod. An L-shaped conduit is slidably installed in the push rod.

[0015] By adopting the above technical solution, the setting of the conduit can constrain and limit the push rod, so that the push rod will not rotate and produce angle changes during movement, thereby affecting the push rod's pressing of the gas at the bottom of the fixed cylinder.

[0016] Preferably, a partition is fixedly installed at the middle position in the conduit, a first one-way valve is fixedly penetrated at the center position of the partition, a plurality of second one-way valves are fixedly penetrated on the partition, and the plurality of second one-way valves are arranged in a circular array on the outer peripheral side of the first one-way valve.

[0017] By adopting the above technical solution, the setting of the partition can divide the inside of the conduit into two spaces. The setting of the first one-way valve and the second one-way valve makes the flow rate in different directions in the conduit different, so that the gas flows into the top of the conduit faster and the gas flows into the bottom of the conduit slower.

[0018] Preferably, a pressing rod is slidably provided in the top opening of the conduit, and one end of the pressing rod is connected to the pressing end of the valve core, and the other end of the pressing rod is fixedly provided with a piston plate, and the outer peripheral wall of the piston plate is connected to the inner wall of the conduit, and the space between the piston plate and the inner wall of the conduit is filled with gas.

[0019] By adopting the above technical solution, the air filled between the piston plate and the inner wall of the tube can provide power for resetting the pressing rod. The gas pushes the piston plate so that the thrust exerted on the push rod will not be reduced due to the reciprocating movement of the piston plate.

[0020] Preferably, the exhaust end of the valve core is connected to an air pump, and the air pump is fixedly connected to the outer peripheral wall of the fixed cylinder through a support rod, the exhaust end of the air pump is connected to a valve, the outer peripheral side fixed sleeve of the bottom of the valve is provided with an air storage tank, the outer peripheral side of the top of the fixed cylinder is fan-shaped and fixed with a plurality of third one-way valves, and the plurality of third one-way valves are divided into two groups and are relatively arranged between the two limit blocks.

[0021] By adopting the above technical solution, the two sets of fan-shaped third one-way valves allow external gas to flow into the top opening of the fixed cylinder from multiple positions, thereby maintaining the pressure on the top of the fixed cylinder during the downward movement of the push rod.

[0022] Preferably, a soft plate is fixedly installed on the bottom side of the gas storage tank, and honeycomb-shaped holes are opened in the soft plate. A soft tube is fixedly penetrated on the outer peripheral wall of the top of the piston cylinder, and the bottom end of the soft tube is inserted into the air inlet of the air pump and fixedly connected to the air pump.

[0023] By adopting the above technical solution, the soft plate with honeycomb holes enables the soft plate to shrink to a greater extent. The setting of the soft tube allows the air pump to synchronously extract the gas in the piston cylinder during operation, thereby separating the electric shock block from the electric shock sheet of the aluminum electrolytic capacitor in time.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the improved aluminum electrolytic capacitor bulge testing device can automatically complete the connection between the aluminum electrolytic capacitor and the aluminum electrolytic capacitor testing device and the bulge test of the aluminum electrolytic capacitor, determine the bulge degree of the aluminum electrolytic capacitor based on the internal air pressure change, and promptly disconnect the aluminum electrolytic capacitor from the aluminum electrolytic capacitor testing device when the bulge of the aluminum electrolytic capacitor reaches a specific degree, thereby stopping the operation of the aluminum electrolytic capacitor in time and greatly reducing the rupture rate of the aluminum electrolytic capacitor. When the aluminum electrolytic capacitor ruptures, harmful gases can be automatically extracted from the device and injected into a container for storage, so that the operator will not inhale harmful gases that may affect his or her health. The aluminum electrolytic capacitor bulge test effect is good, and the device is easy to operate and has a high degree of automation. The specific contents are as follows; A testing mechanism, a power connection mechanism and an air suction mechanism are provided. When the aluminum electrolytic capacitor is subjected to a bulging test, the aluminum electrolytic capacitor is limited and fixed by the testing mechanism. Subsequently, the connection between the aluminum electrolytic capacitor and an external aluminum electrolytic capacitor testing device is automatically completed through the cooperation between the testing mechanism and the power connection mechanism, and the bulging test of the capacitor is performed. When the aluminum electrolytic capacitor bulges to a certain extent, the connection between the aluminum electrolytic capacitor and the external aluminum electrolytic capacitor testing device can be disconnected in time through the cooperation between the power connection mechanism and the air suction mechanism, thereby stopping the operation of the capacitor. This can greatly reduce the rupture rate of the aluminum electrolytic capacitor during the aluminum electrolytic capacitor test. Through the cooperation between the testing mechanism and the air suction mechanism, harmful gases leaked when the aluminum electrolytic capacitor ruptures can be collected and injected into a container for storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 Schematic diagram of the internal structure of the piston cylinder of the present invention; Figure 5 Schematic diagram of the internal structure of the catheter of the present invention; Figure 6 Schematic diagram of the internal structure of the gas storage tank of the present invention.

[0026] In the figure: 1. Fixed cylinder; 2. Testing mechanism; 21. Limiting ring; 22. Push rod; 23. Pressure sensor; 24. Limiting block; 25. Spring; 26. Limiting strip; 3. Power connection mechanism; 31. Push plate; 32. Electric contact block; 33. Soft ring; 34. Piston rod; 35. Piston cylinder; 4. Suction mechanism; 41. Valve core; 42. First one-way valve; 43. Second one-way valve; 44. Pressing rod; 45. Piston plate; 46. Air pump; 47. Valve; 48. Air storage tank; 49. Soft plate; 410. Soft tube; 411. Third one-way valve; 412. Conduit; 413. Partition. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: The present invention provides a technical solution: refer to Figure 1-3The present invention discloses an aluminum electrolytic capacitor bulging test device, which includes a fixed tube 1, which is fixedly mounted on an external operating table by bolts; and also includes: a testing mechanism 2, which is arranged in the fixed tube 1, and performs a bulging test on the aluminum electrolytic capacitor. The testing mechanism 2 includes a limiting ring 21, which is fixedly mounted at the middle position in the fixed tube 1, and a push rod 22 with a T-shaped arrangement is inserted at the center position in the limiting ring 21, and a sealing ring is installed on the outer peripheral side of the push rod 22 to block the gap between the push rod 22 and the inner wall of the fixed tube 1, and a pressure sensor 23 is fixedly inserted at the center position of the inner bottom side of the fixed tube 1 where the outer peripheral wall of the push rod 22 meets the inner wall of the fixed tube 1. The pressure sensor 23 monitors the pressure at the bottom of the fixed tube 1 and transmits the pressure information of the bottom of the fixed tube 1 to the outside through the Internet of Things. In the boundary controller, two T-shaped limit blocks 24 are relatively slidably provided on the outer peripheral side of the top of the fixed cylinder 1, and two springs 25 are relatively provided between the limit blocks 24 and the outer peripheral wall of the fixed cylinder 1, and the two ends of each spring 25 are respectively fixedly connected to the corresponding limit blocks 24 and the outer peripheral wall of the fixed cylinder 1. The end of the limit block 24 located in the fixed cylinder 1 is arranged in an arc shape, and two limit strips 26 are relatively provided on the outer peripheral side of the push rod 22, and both ends of the limit strip 26 are fixedly connected to the inner wall of the fixed cylinder 1, and the limit strip 26 is connected to the outer peripheral wall of the push rod 22. The setting of the limit ring 21 can support and limit the aluminum electrolytic capacitor without affecting the bulging of the aluminum electrolytic capacitor. When the aluminum electrolytic capacitor bulges, the push rod 22 is pushed to compress the air at the bottom of the fixed cylinder 1, and the bulging condition of the aluminum electrolytic capacitor is determined by monitoring the pressure change at the bottom of the fixed cylinder 1 through the pressure sensor 23. The limit block 24 with an arc surface at one end makes it easier for the limit block 24 to move to the top side of the aluminum electrolytic capacitor. The setting of the spring 25 can constrain and limit the limit block 24, so that the limit block 24 automatically resets and moves without external force. The setting of the limit bar 26 can constrain and limit the moving trajectory of the push rod 22, so that the push rod 22 moves back and forth in the vertical direction.

[0029] according to Figure 1 and Figure 4As shown, the power connection mechanism 3 is arranged above the fixed cylinder 1, and the power connection mechanism 3 connects the aluminum electrolytic capacitor to the external power supply. The power connection mechanism 3 includes a push plate 31, which is arranged above the fixed cylinder 1. Two electric shock blocks 32 are relatively fixedly penetrated on the bottom side of the push plate 31, and the electric shock blocks 32 are connected to the connector of the external aluminum electrolytic capacitor testing equipment through a connecting line. A soft ring 33 is fixedly installed on the bottom side of the push plate 31, and the soft ring 33 is sleeved on the outer peripheral side of the two electric shock blocks 32. A piston rod 34 is fixedly installed at the center position of the top side of the push plate 31. The top of the piston rod 34 is slidably sleeved with a piston cylinder 35. The interface of the piston cylinder 35 is connected to the exhaust port of the external gas supply device through a gas pipe. The piston cylinder 35 is fixed to the bracket of the external operating table by bolts. As the gas in the piston cylinder 35 is injected, the piston rod 34 is pushed out of the piston cylinder 35, and then the push plate 31 is pushed toward the fixed cylinder 1. At this time, the push plate 31 and the fixed cylinder 1 squeeze the soft ring 33 from both sides of the soft ring 33, and the soft ring 33 shrinks and deforms to fit tightly with the top opening of the fixed cylinder 1. according to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6As shown, an air suction mechanism 4 is provided on the outer peripheral side of the fixed cylinder 1, and the air suction mechanism 4 is used to absorb and store harmful gases. The air suction mechanism 4 includes a valve core 41, which is fixedly installed on the outer peripheral wall of the fixed cylinder 1 and is located between the limiting ring 21 and the push rod 22. A guide tube 412 in the shape of an L is slidably inserted into the push rod 22. The top opening of the guide tube 412 is opposite to the air inlet of the valve core 41. A sealing ring is provided on the outer peripheral side of the guide tube 412 to block the gap between the guide tube 412 and the push rod 22. A partition 413 is fixedly installed at the middle position of the guide tube 412. The center of the partition 413 is fixedly installed. A first one-way valve 42 is fixedly provided at the position, a plurality of second one-way valves 43 are fixedly provided on the partition plate 413, and the plurality of second one-way valves 43 are arranged in a circumferential array on the outer peripheral side of the first one-way valve 42, a pressing rod 44 is slidably provided in the top opening of the conduit 412, and one end of the pressing rod 44 is connected to the pressing end of the valve core 41, and a sealing ring is installed on the outer peripheral side of the pressing rod 44 to block the gap between the pressing rod 44 and the inner wall of the top opening of the conduit 412, and a movable The plug plate 45, and the outer peripheral wall of the piston plate 45 is connected to the inner wall of the conduit 412, the space between the piston plate 45 and the inner wall of the conduit 412 is filled with gas of appropriate pressure, the exhaust end of the valve core 41 is connected to the air pump 46, and the air pump 46 is fixedly connected to the outer peripheral wall of the fixed cylinder 1 through the support rod, the exhaust end of the air pump 46 is connected to the valve 47, and the top of the valve 47 is threadedly connected to the exhaust port of the air pump 46, the outer peripheral side of the bottom of the valve 47 is fixed with an air tank 48, and the outer peripheral of the top of the fixed cylinder 1 is fixed with a gas tank 48. The side is fan-shaped and fixed with a number of third one-way valves, and the number of third one-way valves is divided into two groups and is relatively arranged between the two limit blocks 24. A soft plate 49 is fixedly installed on the bottom side of the air storage tank 48, and honeycomb-shaped holes are opened in the soft plate 49. The soft plate 49 is a rubber plate. A soft tube 410 is fixedly penetrated on the outer peripheral wall of the top of the piston cylinder 35, and the bottom end of the soft tube 410 is inserted into the air inlet of the air pump 46 and fixedly connected to the air pump 46. The soft tube 410 is a deformable tube such as a rubber tube or a bellows. The setting of the conduit 412 can constrain and limit the push rod 22, so that the push rod 22 will not rotate and produce angle changes during the movement. The setting of the partition 413 can divide the inside of the conduit 412 into two spaces. The setting of the first one-way valve 42 and the second one-way valve 43 makes the flow rate in different directions in the conduit 412 different. The air filled between the piston plate 45 and the inner wall of the conduit 412 can provide power for resetting the pressing rod. The two sets of fan-shaped third one-way valves allow external gas to flow into the top opening of the fixed cylinder 1 from multiple positions. The soft plate 49 with honeycomb holes allows the soft plate 49 to shrink to a greater extent. The setting of the soft tube 410 allows the air pump 46 to synchronously extract the gas in the piston cylinder 35 during operation.

[0030] Example 2: When performing a bulging test on an aluminum electrolytic capacitor, the operator first inserts the aluminum electrolytic capacitor into the fixed cylinder 1, and then pushes the limit blocks 24 from both sides of the fixed cylinder 1. Since the arc surface of the limit block 24 conflicts with the outer arc edge of the top of the aluminum electrolytic capacitor, the aluminum electrolytic capacitor is pushed downward until the bottom side of the aluminum electrolytic capacitor conflicts with the limit ring 21. Due to the conflict between the aluminum electrolytic capacitor and the push rod 22, the push rod 22 moves downward synchronously to compress the air at the bottom of the fixed cylinder 1. Due to the reverse push of the air at the bottom of the fixed cylinder 1 on the aluminum electrolytic capacitor, the top side of the aluminum electrolytic capacitor conflicts with the limit block 24, thereby stably positioning the aluminum electrolytic capacitor in a suitable position within the fixed cylinder 1. At the same time, a great friction force is generated between the bottom side of the limit block 24 and the aluminum electrolytic capacitor. The friction between the limit block 24 and the aluminum electrolytic capacitor offsets the elastic force of the spring 25, so that the limit block 24 is stably positioned above the aluminum electrolytic capacitor. It should be noted that after the above operation is completed, the operator needs to manually connect the external power supply to the aluminum electrolytic capacitor contact sheet; Embodiment 3: According to the above description, when the operator pushes the limit block 24, the pressure sensor 23 detects that the pressure in the fixed cylinder 1 reaches the set value, and the controller controls the external gas supply mechanism to inject an appropriate amount of gas into the piston cylinder 35, so that the air pressure in the piston cylinder 35 increases, and pushes the piston rod 34 out of the piston cylinder 35, and at the same time pushes the push plate 31 to move a specific distance toward the fixed cylinder 1. After the soft ring 33 contacts the top side of the opening of the fixed cylinder 1, the push plate 31 and the fixed cylinder 1 squeeze the soft ring 33 from both sides of the soft ring 33, and the soft ring 33 shrinks and deforms so that the bottom side of the soft ring 33 fits with the top side wall of the fixed cylinder 1. At this time, the opening at the top of the fixed cylinder 1 is closed, and at the same time, the electric shock block 32 contacts the electric shock sheet on the top side of the aluminum electrolytic capacitor. The external aluminum electrolytic capacitor testing equipment connector is connected to the electric shock sheet of the aluminum electrolytic capacitor through the connecting line and the electric shock block 32, and the external aluminum electrolytic capacitor testing equipment drives the capacitor to operate; Embodiment 4: According to the above, the capacitor runs for a specific test time. If the capacitor has no bulge, the push rod 22 will not move downward, and the pressure sensor 23 will not detect the increase in the bottom pressure of the fixed cylinder 1. After the test time is over, the external gas supply device is started to extract the gas in the piston cylinder 35, thereby pulling the piston rod 34 back into the piston cylinder 35, and synchronously pulling the push plate 31, the soft ring 33 and the electric shock block 32 to reset, and releasing the blocking state of the top of the fixed cylinder 1. At this time, the limit block 24 is pulled to both sides so that the limit block 24 is moved away from the top side of the aluminum electrolytic capacitor, and the conflict between the limit block 24 and the top side of the aluminum electrolytic capacitor is released. At this time, the gas at the bottom of the fixed cylinder 1 pushes the push rod 22 to move upward until the push rod 22 and the limit bar 26 conflict with each other. Due to the mutual conflict between the push rod 22 and the aluminum electrolytic capacitor, the aluminum electrolytic capacitor can be synchronously pushed upward and reset. At this time, the operator can pull the aluminum electrolytic capacitor out of the fixed cylinder 1; If the capacitor bulges, the bulging of the aluminum electrolytic capacitor will push the push rod 22 downward, causing the push rod 22 to move slowly downward. At this time, the pressure sensor 23 detects that the pressure at the bottom of the fixed cylinder 1 is slowly increasing. The bulging of the aluminum electrolytic capacitor can be judged based on the pressure change. As the push rod 22 moves downward, when the pressure sensor 23 detects that the pressure at the bottom of the fixed cylinder 1 exceeds the threshold, the external controller controls the air pump 46 to start running, and the gas in the piston cylinder 35 is extracted through the soft tube 410 and injected into the gas storage tank 48 for storage through the third valve 47. At the same time, the piston rod 34 retracts. The piston cylinder 35 is pushed into the piston cylinder 35, and the push plate 31, the soft ring 33 and the electric shock block 32 are pulled back to their original positions, thereby releasing the blocking state of the top of the fixed cylinder 1. At this time, the limit blocks 24 are pulled to both sides so that the limit blocks 24 are moved away from the top side of the aluminum electrolytic capacitor, releasing the conflict between the limit blocks 24 and the top side of the aluminum electrolytic capacitor. At this time, the gas at the bottom of the fixed cylinder 1 pushes the push rod 22 to move upward until the push rod 22 and the limit bar 26 conflict with each other. Due to the conflict between the push rod 22 and the aluminum electrolytic capacitor, the aluminum electrolytic capacitor can be synchronously pushed upward to be reset. At this time, the operator can pull the aluminum electrolytic capacitor out of the fixed cylinder 1. If the aluminum electrolytic capacitor bulges and ruptures, a large amount of gas will leak out rapidly from the aluminum electrolytic capacitor, causing the air pressure at the top of the fixing cylinder 1 to rise. The gas gushing out from the crack at the bottom of the aluminum electrolytic capacitor pushes the push plate 31, causing the push rod 22 to move downward rapidly. At this time, the pressure sensor 23 detects the rapid increase in pressure at the bottom of the fixing cylinder 1 and exceeds the threshold. It should be noted that, during the downward movement of the aluminum electrolytic capacitor bulge push plate 31, external air will flow into the fixed cylinder 1 through the third one-way valve to maintain the pressure at the top of the fixed cylinder 1; As the pressure at the bottom of the fixed cylinder 1 increases, part of the gas at the bottom of the fixed cylinder 1 passes through the second one-way valve 43 and over the partition 413 into the top of the conduit 412, thereby increasing the pressure at the top of the fixed cylinder 1. As the pressure at the bottom of the fixed cylinder 1 increases rapidly and exceeds the threshold, the thrust of the gas at the top of the fixed cylinder 1 on the piston plate 45 will increase rapidly. At this time, the gas at the top of the fixed cylinder 1 pushes the piston plate 45 toward the valve core 41, and drives the pressing rod 44 to press the pressing end of the valve core 41. The valve core 41 opens the air inlet of the air pump 46 and connects it to the top of the fixed cylinder 1. At the same time, the controller controls the air pump 46 to start for a specific time. The harmful gas in the top of the fixed cylinder 1 is sucked into the gas storage tank 48 for storage. At the same time, the gas in the piston cylinder 35 is extracted through the soft tube 410 and discharged by The gas is introduced into the gas storage tank 48 at the valve 47 for storage, and the push plate 31, the soft ring 33 and the electric shock block 32 are pulled synchronously to reset, thereby releasing the blocking state of the top of the fixed cylinder 1. At this time, the limit blocks 24 are pulled to both sides so that the limit blocks 24 are moved away from the top side of the aluminum electrolytic capacitor, thereby releasing the conflicting state between the limit blocks 24 and the top side of the aluminum electrolytic capacitor. At this time, the outside gas flows into the fixed cylinder 1 from the opening at the top of the fixed cylinder 1, pushing the harmful gas in the fixed cylinder 1 downward, so that all the harmful gas flows into the gas storage tank 48 for storage. At the same time, the gas at the bottom of the fixed cylinder 1 pushes the push rod 22 to move upward until the push rod 22 conflicts with the limit strip 26. Due to the conflict between the push rod 22 and the aluminum electrolytic capacitor, the aluminum electrolytic capacitor can be synchronously pushed upward and reset. At this time, the operator can pull the aluminum electrolytic capacitor out of the fixed cylinder 1. It should be noted that when the air pressure at the bottom of the fixed cylinder 1 exceeds the air pressure at the top of the fixed cylinder 1, the gas in the conduit 412 will pass through the first one-way valve 42 and slowly cross the bottom of the conduit 412 and flow back into the bottom of the fixed cylinder 1, so that the pressing rod 44 maintains the pressure on the pressing end of the valve core 41 for a period of time, allowing the valve core 41 to open for a specific time. As the gas at the top of the conduit 412 slowly flows out, the gas between the piston plate 45 and the inner wall of the conduit 412 slowly pushes the piston plate 45 away from the valve core 41 until the pressing rod 44 and the conduit 412 conflict with each other, pulling the pressing rod 44 to reset, and releasing the pressing state of the pressing end of the valve core 41. The valve core 41 returns to the closed state, and the connection between the inside of the air inlet of the air pump 46 and the bottom of the fixed cylinder 1 is released.

[0031] Working principle: According to the above description, the capacitor bulge test is carried out, the valve 47 is closed at a fixed time and the valve 47 is unscrewed from the exhaust end of the air pump 46, a new gas tank 48 is replaced and the valve 47 on the new gas tank 48 is screwed to the exhaust end of the air pump 46, thereby completing the replacement of the gas tank 48. The gas tank 48 can be connected to the gas tank 48 to transport the harmful gas to a specific location for harmless treatment; It should be noted that when installing the air tank 48, press the soft pad downward. As the soft pad contracts, the air tank 48 moves to below the exhaust end of the air pump 46. Pushing the air tank 48 can move the valve 47 to directly below the exhaust end of the air pump 46.

[0032] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aluminum electrolytic capacitor bulging test device, comprising a fixing cylinder (1); It is characterized in that Also includes: A testing mechanism (2), the testing mechanism (2) being arranged in the fixing tube (1), and the testing mechanism (2) performing a bulging test on the aluminum electrolytic capacitor; A power connection mechanism (3) is provided above the fixed cylinder (1), and the power connection mechanism (3) connects the aluminum electrolytic capacitor to an external power source. An air suction mechanism (4) is provided on the outer peripheral side of the fixed cylinder (1), and the air suction mechanism (4) absorbs and stores harmful gases.

2. The aluminum electrolytic capacitor bulge testing device according to claim 1, characterized in that: The testing mechanism (2) comprises a limiting ring (21), the limiting ring (21) being fixedly mounted at a middle position in the fixed cylinder (1), a push rod (22) having a T-shape being inserted through the center position in the limiting ring (21), a pressure sensor (23) being fixedly inserted through the center position of the inner bottom side of the fixed cylinder (1) at a location where the outer peripheral wall of the push rod (22) is connected to the inner wall of the fixed cylinder (1).

3. The aluminum electrolytic capacitor bulge testing device according to claim 2, characterized in that: Two T-shaped limit blocks (24) are relatively slidably disposed on the outer peripheral side of the top of the fixed cylinder (1); two springs (25) are relatively disposed between the limit blocks (24) and the outer peripheral wall of the fixed cylinder (1); and the two ends of each spring (25) are respectively fixedly connected to the corresponding limit block (24) and the outer peripheral wall of the fixed cylinder (1); and one end of the limit block (24) located in the fixed cylinder (1) is arranged in an arc shape.

4. The aluminum electrolytic capacitor bulge testing device according to claim 3, characterized in that: Two limiting strips (26) are arranged opposite to each other on the outer peripheral side of the push rod (22), and both ends of the limiting strips (26) are fixedly connected to the inner wall of the fixed cylinder (1), and the limiting strips (26) are connected to the outer peripheral wall of the push rod (22).

5. The aluminum electrolytic capacitor bulge testing device according to claim 4, characterized in that: The power connection mechanism (3) comprises a push plate (31), the push plate (31) is arranged above the fixed cylinder (1), two electric shock blocks (32) are relatively fixedly penetrated on the bottom side of the push plate (31), a soft ring (33) is fixedly installed on the bottom side of the push plate (31), and the soft ring (33) is sleeved on the outer peripheral side of the two electric shock blocks (32), a piston rod (34) is fixedly installed at the center position of the top side of the push plate (31), and a piston cylinder (35) is slidably sleeved on the top of the piston rod (34).

6. The aluminum electrolytic capacitor bulge testing device according to claim 5, characterized in that: The air intake mechanism (4) comprises a valve core (41), the valve core (41) being fixedly inserted into the outer peripheral wall of the fixed cylinder (1), and the valve core (41) being located between the limit ring (21) and the push rod (22), and a guide tube (412) in an L-shape being slidably inserted into the push rod (22).

7. The aluminum electrolytic capacitor bulge testing device according to claim 6, characterized in that: A partition (413) is fixedly installed at a middle position in the conduit (412), a first one-way valve (42) is fixedly penetrated at a central position of the partition (413), a plurality of second one-way valves (43) are fixedly penetrated on the partition (413), and the plurality of second one-way valves (43) are arranged in a circular array on the outer peripheral side of the first one-way valve (42).

8. The aluminum electrolytic capacitor bulge testing device according to claim 7, characterized in that: A pressing rod (44) is slidably inserted into the top opening of the conduit (412), and one end of the pressing rod (44) is connected to the pressing end of the valve core (41). A piston plate (45) is fixedly mounted on the other end of the pressing rod (44), and the outer peripheral wall of the piston plate (45) is connected to the inner wall of the conduit (412). Gas is filled between the piston plate (45) and the inner wall of the conduit (412).

9. The aluminum electrolytic capacitor bulge testing device according to claim 8, characterized in that: The exhaust end of the valve core (41) is connected to an air pump (46), and the air pump (46) is fixedly connected to the outer peripheral wall of the fixed cylinder (1) through a support rod. The exhaust end of the air pump (46) is connected to a valve (47), and an air storage tank (48) is fixedly sleeved on the outer peripheral side of the bottom of the valve (47). A plurality of third one-way valves (411) are fixedly penetrated in a fan-shaped manner on the outer peripheral side of the top of the fixed cylinder (1), and the plurality of third one-way valves (411) are divided into two groups and are relatively arranged between the two limit blocks (24).

10. The aluminum electrolytic capacitor bulge testing device according to claim 9, characterized in that: A soft plate (49) is fixedly mounted on the bottom side of the gas storage tank (48), and honeycomb-shaped holes are opened in the soft plate (49). A soft tube (410) is fixedly penetrated through the outer peripheral wall of the top of the piston cylinder (35), and the bottom end of the soft tube (410) is inserted into the air inlet of the air pump (46) and fixedly connected to the air pump (46).

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