Capacitor aluminum shell anti-pressure capability testing device

Abstract

The utility model discloses a device for testing the compression resistance of an aluminum shell of a capacitor, which belongs to the technical field of compression resistance testing of the aluminum shell of the capacitor, and comprises a machine base, the two sets of semi-permeable protective cylinders are fixedly connected to the machine base, the upper ends of the two sets of semi-permeable protective cylinders extend to the truss, and the bottoms of the semi-permeable protective cylinders communicate with the exterior of the machine base through waste liquid pipes; two groups of clamping mechanisms; according to the utility model, the capacitor aluminum shell to be tested is placed in the corresponding semi-permeable protective cylinder, the electric cylinder drives the clamping mechanism to clamp and position the capacitor aluminum shell, the high-pressure liquid pressurized by the gas-liquid booster pump in the pressurizing pipe is injected into the capacitor aluminum shell to be tested, and the pressure of the pressure gauge and the liquid leakage condition of the capacitor aluminum shell are observed. The two groups of test structures are designed independently, so that the other group of structure is in a test state while one group of structure clamps the capacitor aluminum shell to be tested, and the test continuity is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor aluminum shell compression testing technology, and in particular relates to a capacitor aluminum shell compression testing device. Background Technology

[0002] The core purpose of conducting compressive strength tests on capacitor aluminum casings is to ensure that the casing can safely and reliably protect internal components under various operating conditions, preventing capacitor failure or even safety accidents due to insufficient casing strength. The compressive strength test is completed by applying pressure to the aluminum casing using hydraulic or pneumatic equipment and observing whether the casing deforms or leaks.

[0003] Currently, the factory produces capacitor aluminum shells in various specifications. When testing different specifications of capacitor aluminum shells, it is necessary to change the corresponding specification of the fixture, which makes the device less versatile. Furthermore, when changing the fixture, the device is in a stagnant state, resulting in poor testing continuity and low testing efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a capacitor aluminum shell compression resistance testing device in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a capacitor aluminum shell compression resistance testing device, comprising:

[0006] The base, on which a truss is mounted;

[0007] Two sets of semi-permeable protective cylinders are fixedly connected to the machine base, and the upper ends of the two sets of semi-permeable protective cylinders extend to the truss. The bottom of the semi-permeable protective cylinders is connected to the outside of the machine base through a waste liquid pipe.

[0008] Two sets of clamping mechanisms are respectively installed inside the two sets of semi-permeable protective cylinders. The clamping mechanisms are connected to the outside of the machine base through a pressurization pipe. A gas-liquid pressurization pump is connected to the pressurization pipe, and a pressure gauge is connected to the pressurization pipe.

[0009] Two electric cylinders are fixedly connected to the truss, and the telescopic ends of the two electric cylinders are respectively connected to and drive the two sets of clamping mechanisms.

[0010] As a further description of the above technical solution:

[0011] The clamping mechanism includes a positioning disc and a limiting disc. The positioning disc is fixedly connected to the bottom of the semi-permeable protective cylinder. A liquid inlet is provided in the middle of the positioning disc, and the end of the pressurizing pipe is inserted into the liquid inlet. The top surface of the positioning disc has multiple concentric circular positioning grooves, the axis of which coincides with the axis of the liquid inlet. The limiting disc is fixedly connected to the telescopic end of the electric cylinder, the axis of which coincides with the axis of the positioning disc. A liquid outlet is provided in the middle of the limiting disc, and the bottom surface of the limiting disc has multiple stepped circular surfaces arranged in a stepped pattern.

[0012] As a further description of the above technical solution:

[0013] A sealing ring is provided inside the circular positioning groove.

[0014] As a further description of the above technical solution:

[0015] The semi-permeable protective cylinder is equipped with multiple guide rods, and the limiting disc is slidably connected to the guide rods.

[0016] As a further description of the above technical solution:

[0017] The base is equipped with multiple control buttons, which are electrically connected to the gas-liquid booster pump and the electric cylinder.

[0018] As a further description of the above technical solution:

[0019] An arc-shaped door is hinged to the semi-transparent protective cylinder.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, the aluminum shell of the capacitor to be tested is placed into the corresponding semi-transparent protective cylinder, and the clamping mechanism driven by the electric cylinder clamps and positions the aluminum shell of the capacitor. High-pressure liquid pressurized by the gas-liquid booster pump in the booster tube is injected into the aluminum shell of the capacitor to be tested. By observing the pressure of the pressure gauge and the leakage of the aluminum shell of the capacitor, the pressure resistance test of the aluminum shell of the capacitor can be completed. The two sets of test structures are designed independently, so that when one set of structures clamps the aluminum shell of the capacitor to be tested, the other set of structures is in the test state, ensuring the continuity of the test.

[0022] 2. In this utility model, when clamping the aluminum capacitor shell, the opening edge of the aluminum capacitor shell is inserted into the corresponding circular positioning groove according to the diameter of the aluminum capacitor shell. When the electric cylinder drives the limiting disc to descend, the circular step surface corresponding to the specification of the aluminum capacitor shell automatically abuts against the end of the aluminum capacitor shell, thereby realizing the clamping and positioning of the aluminum capacitor shell. This allows the clamping mechanism to quickly position and clamp aluminum capacitor shells of different specifications, greatly improving the flexibility and versatility of the device. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a capacitor aluminum shell compressive strength testing device. Figure 1 .

[0024] Figure 2 A schematic diagram of the overall structure of a capacitor aluminum shell compressive strength testing device. Figure 2 .

[0025] Figure 3 This is a reference diagram showing the usage status of a capacitor aluminum shell compressive strength testing device.

[0026] Figure 4 This is a cross-sectional view of a device for testing the compressive strength of an aluminum capacitor shell.

[0027] Figure 5 for Figure 4 The usage status is shown in the diagram.

[0028] Figure 6 This is a schematic diagram of the positioning disk in a capacitor aluminum shell compression resistance testing device.

[0029] Figure 7 This is a schematic diagram of the limiting disk in a capacitor aluminum shell compression resistance testing device.

[0030] Legend:

[0031] 1. Base; 2. Truss; 3. Semi-permeable protective cylinder; 4. Waste liquid pipe; 5. Clamping mechanism; 51. Positioning disc; 52. Limiting disc; 6. Pressure boosting pipe; 7. Gas-liquid booster pump; 8. Pressure gauge; 9. Electric cylinder; 10. Liquid inlet; 11. Circular positioning groove; 12. Liquid outlet; 13. Circular stepped surface; 14. Sealing ring; 15. Guide rod; 16. Control button; 17. Arc-shaped door. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-7 This utility model provides a technical solution: a device for testing the compressive strength of a capacitor aluminum shell, comprising:

[0034] A base 1, on which a truss 2 is mounted;

[0035] Two sets of semi-permeable protective cylinders 3 are fixedly connected to the base 1, and the upper ends of the two sets of semi-permeable protective cylinders 3 extend to the truss 2. The bottom of the semi-permeable protective cylinders 3 are connected to the outside of the base 1 through the waste liquid pipe 4.

[0036] Two sets of clamping mechanisms 5 are respectively installed inside the two sets of semi-permeable protective cylinders 3. The clamping mechanisms 5 are connected to the outside of the base 1 through the pressurizing pipe 6. A gas-liquid pressurizing pump 7 is connected to the pressurizing pipe 6, and a pressure gauge 8 is connected to the pressurizing pipe 6.

[0037] Two electric cylinders 9 are fixedly connected to the truss 2, and the telescopic ends of the two electric cylinders 9 are respectively connected to and drive the two sets of clamping mechanisms 5;

[0038] The clamping mechanism 5 includes a positioning disc 51 and a limiting disc 52. The positioning disc 51 is fixedly connected to the bottom of the semi-permeable protective cylinder 3. A liquid inlet hole 10 is provided in the middle of the positioning disc 51, and the end of the pressure boosting pipe 6 is inserted into the liquid inlet hole 10. Multiple concentric annular positioning grooves 11 are provided on the top surface of the positioning disc 51, with the axis of each annular positioning groove 11 coinciding with the axis of the liquid inlet hole 10. The limiting disc 52 is fixedly connected to the telescopic end of the electric cylinder 9, with the axis of the limiting disc 52 coinciding with the axis of the positioning disc 51. A liquid outlet hole 12 is provided in the middle of the limiting disc 52. The bottom of the limiting disc 52... The device has multiple stepped annular surfaces 13 arranged in a stepped manner. When clamping the aluminum capacitor shell, the opening edge of the aluminum capacitor shell is inserted into the corresponding circular positioning groove 11 according to the diameter of the aluminum capacitor shell. When the electric cylinder 9 drives the limiting disk 52 to descend, the stepped annular surface 13 corresponding to the specification of the aluminum capacitor shell automatically abuts against the end of the aluminum capacitor shell, realizing the clamping and positioning of the aluminum capacitor shell. This allows the clamping mechanism 5 to quickly position and clamp aluminum capacitor shells of different specifications, greatly improving the flexibility and versatility of the device. During testing, high-pressure liquid is injected into the interior of the aluminum capacitor shell from the inlet hole 10. When the end of the aluminum capacitor shell breaks, the liquid will be discharged from the outlet hole 12.

[0039] A sealing ring 14 is provided in the annular positioning groove 11. The opening edge of the capacitor aluminum shell is inserted into the annular positioning groove 11 to form a waterproof groove structure. The opening edge of the capacitor aluminum shell squeezes the sealing ring 14 to make it abut against the inner wall of the annular positioning groove 11, thereby ensuring the airtightness of the capacitor aluminum shell under test.

[0040] The semi-transparent protective cylinder 3 is provided with multiple guide rods 15. The limiting disk 52 is slidably connected to the guide rods 15. The guide rods 15 have a guiding and supporting effect on the sliding of the limiting disk 52, ensuring that the limiting disk 52 stably and accurately clamps the aluminum shell of the capacitor to be tested.

[0041] The base 1 is provided with a plurality of control buttons 16, which are electrically connected to the gas-liquid booster pump 7 and the electric cylinder 9. The control buttons 16 facilitate the control of the switching on and off of the gas-liquid booster pump 7 and the extension and retraction of the electric cylinder 9.

[0042] An arc-shaped door 17 is hinged to the semi-transparent protective cylinder 3. Opening the arc-shaped door 17 facilitates the removal and placement of the aluminum shell of the capacitor to be tested from inside the semi-transparent protective cylinder 3.

[0043] Working principle: First, connect the end of the booster pipe 6 outside the base 1 to the water supply pipe, and connect the end of the waste liquid pipe 4 outside the base 1 to the waste liquid tank. Second, when clamping the capacitor aluminum shell, open the arc-shaped door 17 on the semi-transparent protective cylinder 3. According to the diameter of the capacitor aluminum shell, insert the opening edge of the capacitor aluminum shell into the corresponding circular positioning groove 11. The opening edge of the capacitor aluminum shell is inserted into the circular positioning groove 11 to form a waterproof groove structure. Click the control button 16 to control the electric cylinder 9 to drive the limiting disc 52 to descend. At this time, the limiting disc 52 slides along the multiple guide rods 15, and the opening edge of the capacitor aluminum shell is squeezed tightly. The sealing ring 14 is pressed against the inner wall of the circular positioning groove 11 to ensure the airtightness of the aluminum shell of the capacitor under test. The circular stepped surface 13, which corresponds to the specifications of the aluminum shell of the capacitor, automatically presses against the end of the aluminum shell of the capacitor to achieve the clamping and positioning of the aluminum shell of the capacitor. The arc-shaped door 17 is closed. Finally, during the test, the control button 16 is clicked to control the gas-liquid booster pump 7 to open. The high-pressure liquid after being boosted by the gas-liquid booster pump 7 is injected into the aluminum shell of the capacitor under test through the liquid inlet 10. The pressure of the pressure gauge 8 and the leakage of the aluminum shell of the capacitor are observed. When the end of the aluminum shell of the capacitor breaks, the liquid will be discharged from the liquid outlet 12, and the pressure resistance test of the aluminum shell of the capacitor can be completed.

[0044] 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 device for testing the compressive strength of a capacitor aluminum shell, characterized in that: include: A base (1) on which a truss (2) is mounted; Two sets of semi-permeable protective cylinders (3) are fixedly connected to the base (1), and the upper ends of the two sets of semi-permeable protective cylinders (3) extend to the truss (2). The bottom of the semi-permeable protective cylinders (3) is connected to the outside of the base (1) through the waste liquid pipe (4). Two sets of clamping mechanisms (5) are respectively installed in two sets of semi-permeable protective cylinders (3). The clamping mechanism (5) is connected to the outside of the base (1) through a booster pipe (6). A gas-liquid booster pump (7) is connected to the booster pipe (6), and a pressure gauge (8) is connected to the booster pipe (6). Two electric cylinders (9) are fixedly connected to the truss (2), and the telescopic ends of the two electric cylinders (9) are respectively connected to and drive the two sets of clamping mechanisms (5).

2. The capacitor aluminum shell compression resistance testing device according to claim 1, characterized in that, The clamping mechanism (5) includes a positioning disc (51) and a limiting disc (52). The positioning disc (51) is fixedly connected to the bottom of the semi-permeable protective cylinder (3). The positioning disc (51) has a liquid inlet hole (10) in the middle. The end of the pressurizing pipe (6) is inserted into the liquid inlet hole (10). The top surface of the positioning disc (51) has multiple concentric circular positioning grooves (11). The axis of the circular positioning grooves (11) coincides with the axis of the liquid inlet hole (10). The limiting disc (52) is fixedly connected to the telescopic end of the electric cylinder (9). The axis of the limiting disc (52) coincides with the axis of the positioning disc (51). The limiting disc (52) has a liquid outlet hole (12) in the middle. The bottom surface of the limiting disc (52) has multiple stepped circular steps (13).

3. The capacitor aluminum shell compression resistance testing device according to claim 2, characterized in that, A sealing ring (14) is provided inside the annular positioning groove (11).

4. The capacitor aluminum shell compression resistance testing device according to claim 3, characterized in that, The semi-permeable protective cylinder (3) is provided with multiple guide rods (15), and the limiting disc (52) is slidably connected to the guide rods (15).

5. The capacitor aluminum shell compression resistance testing device according to claim 4, characterized in that, The base (1) is provided with a plurality of control buttons (16), which are electrically connected to the gas-liquid booster pump (7) and the electric cylinder (9).

6. The capacitor aluminum shell compression resistance testing device according to claim 1, characterized in that, An arc-shaped door (17) is hinged to the semi-transparent protective cylinder (3).

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