Film capacitor pressure testing device

Abstract

The utility model relates to a thin-film capacitor pressure testing device, which comprises a placing seat for placing a capacitor shell, an air pressure increasing assembly and a pressure deformation monitoring assembly, and is characterized in that the pressure deformation monitoring assembly comprises a moving part and two groups of pressure monitoring parts which are oppositely arranged; the moving part can be used for driving the two groups of pressure monitoring parts to move towards each other or away from each other, and when a pressure test is carried out on the capacitor shell placed on the placing seat, the interior of the capacitor shell is inflated and pressurized through the air pressure increasing assembly; the pressure detection ends of the two groups of pressure monitoring parts are driven by the moving part to move oppositely to contact with the side surface of the capacitor shell so as to monitor the deformation of the interior of the capacitor shell during pressurization, the whole working process of pressure detection by the device can be completed, the scene process of pressure test can be tracked in the whole process, and the working efficiency is improved. And the air pressure test requirement of the capacitor shell is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to capacitor technical field especially relates to film capacitor pressure testing device. BACKGROUND

[0002] Capacitor in the long-term working process, can because repeatedly overvoltage, or aging and so on, cause internal medium to swell, large capacitor in order to meet the demand of insulation and long-term use, usually all adopt the shell of plastic material to package, if unable to bear internal medium swelling, then will occur burst damage, lead to capacitor damage, therefore pressure test to the capacitor shell of plastic material to judge whether capacitor shell meets the use demand.

[0003] Some prior art in the process of monitoring capacitor shell, when pressurizing capacitor, somewhat through visual observation or camera detection, cannot effectively track the scene process of capacitor deformation pressure value change test, difficult to meet the air pressure test demand of capacitor shell. UTILITY MODEL CONTENTS

[0004] The utility model provides film capacitor pressure testing device in view of prior art's insufficient, specific technical scheme is as follows:

[0005] Film capacitor pressure testing device, including the placement seat for placing capacitor shell, gas pressure increasing assembly and pressure deformation monitoring assembly, the pressure deformation monitoring assembly includes mobile part and two groups of opposite pressure monitoring parts, the mobile part can be used for driving two groups of pressure monitoring parts to move oppositely or apart, when the capacitor shell on the placement seat is pressed, the capacitor shell is inflated by gas pressure increasing assembly, the pressure detection end of two groups of pressure monitoring parts is moved to contact the side of capacitor shell by the mobile part, to monitor the deformation when the capacitor shell is inflated.

[0006] As improvement of the above technical scheme: still include base and protective cover, the placement seat is installed at the top of base, the top of base is equipped with the clamping groove, the protective cover is through the clamping block and is connected into the clamping groove.

[0007] As improvement of the above technical scheme: the gas pressure increasing assembly includes L-shaped mounting bracket, gas tank, air pump and air cock, the L-shaped mounting bracket is installed on the base, the gas tank is installed on the L-shaped mounting bracket, the input end of air pump is connected with gas tank through pipeline, the output end of air pump is connected with air cock through flexible pipe, the bottom of air cock is connected with the rubber ring that is adapted to the air inlet port of capacitor shell, the electric telescopic rod is installed on the L-shaped mounting bracket, the output rod of electric telescopic rod is connected with air cock.

[0008] As an improvement to the above technical solution: the moving part includes an adjusting shell and a threaded rod. The threaded rod is rotatably connected to the inside of the adjusting shell. One end of the threaded rod extends to the outside of the adjusting shell and is connected to a handle. Two nut blocks are symmetrically threaded on the threaded rod. One end of the nut block extends to the outside of the adjusting shell and is connected to a moving block. The pressure monitoring part includes a pressure sensor installed inside the moving block. The bottom end of the nut block is slidably sleeved on the surface of the guide rod.

[0009] As an improvement to the above technical solution, a lifting assembly is also included, which includes a hydraulic cylinder mounted on a placement seat, and the top output shaft of the hydraulic cylinder is connected to the bottom end of the adjustment shell.

[0010] As an improvement to the above technical solution, it also includes a controller and a display. An electronically controlled pressure gauge and a solenoid valve are installed on the hose. The air pump, electronically controlled pressure gauge, solenoid valve, and display are all connected to the controller.

[0011] The beneficial effects of this utility model are:

[0012] Before pressure testing the capacitor casing, place the capacitor casing on the base. Then, by rotating the handle, move the two pressure sensors towards each other, bringing their pressure sensing ends into contact with the capacitor casing. During testing, air is injected into the capacitor casing via the air pump of the inflation assembly. The high-pressure gas generated by the pump is injected into the capacitor casing, and the electronically controlled pressure gauge records the injected pressure. As the pressure gradually increases, the capacitor casing deforms. The pressure sensors monitor the pressure value during capacitor deformation in real time and transmit the data to the display for observation. This completes the entire pressure testing process of the device, which can track the entire pressure test process and meet the air pressure testing requirements of the capacitor casing. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the adjustment shell in this utility model.

[0015] Reference numerals: 1. Placement seat; 100. Capacitor housing; 2. Adjustment housing; 21. Threaded rod; 22. Nut block; 23. Guide rod; 3. Hydraulic cylinder one; 4. Moving block; 5. Pressure sensor; 6. L-shaped mounting bracket; 7. Air tank; 8. Air pump; 9. Electrically controlled pressure gauge; 10. Solenoid valve; 11. Hoses; 12. Electric telescopic rod; 13. Air nozzle; 14. Rubber ring; 15. Base; 150. Slot; 16. Protective cover; 161. Locking block. Detailed Implementation

[0016] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0017] Embodiment

[0018] Please refer to Figs. 1-2 , the film capacitor pressure testing device, including the placement seat 1 for placing the capacitor shell 100, the gas pressure assembly and the pressure deformation monitoring assembly, the pressure deformation monitoring assembly includes the moving part and two groups of opposite pressure monitoring parts, the moving part can be used to drive two groups of pressure monitoring parts to move oppositely or apart, when the capacitor shell 100 on the placement seat 1 is tested, the capacitor shell 100 is inflated by the gas pressure assembly, the pressure detection end of the two groups of pressure monitoring parts is moved to contact the side of the capacitor shell 100 by the moving part, so that the deformation of the capacitor shell 100 is monitored when the pressure inside the capacitor shell 100 is increased.

[0019] In an alternative embodiment: it also includes the base 15 and the protective cover 16, the placement seat 1 is installed on the top of the base 15, the top of the base 15 is provided with the clamping groove 150, the protective cover 16 is connected into the clamping groove 150 through the clamping block 161, when the protective cover 16 is connected to the base 15, the capacitor shell 100 is located in the interior of the protective cover 16, the capacitor shell 100 can be protected during pressure measurement by connecting the protective cover 16 and the base 15, preventing the explosion of the capacitor shell 100 from affecting the experimenters.

[0020] In an alternative embodiment: the gas pressure assembly includes the L-shaped mounting bracket 6, the gas tank 7, the gas pump 8 and the gas nozzle 13, the L-shaped mounting bracket 6 is installed on the base 15, the gas tank 7 is installed on the L-shaped mounting bracket 6, the input end of the gas pump 8 is connected with the gas tank 7 through the pipeline, the output end of the gas pump 8 is connected with the gas nozzle 13 through the hose 11, the bottom of the gas nozzle 13 is connected with the rubber ring 14 matched with the gas inlet port of the capacitor shell 100, the connection between the gas nozzle 13 and the capacitor shell 100 can be sealed by the rubber ring 14 when the capacitor shell 100 is inflated, preventing the gas from leaking during inflation, the electric telescopic rod 12 is installed on the L-shaped mounting bracket 6, the output rod of the electric telescopic rod 12 is connected with the gas nozzle 13, the gas nozzle 13 can be lifted up and down by the electric telescopic rod 12.

[0021] In an optional embodiment: the moving part comprises an adjusting shell 2 and a threaded rod 21, the threaded rod 21 is rotationally connected to the inside of the adjusting shell 2, one end of the threaded rod 21 extends to the outside of the adjusting shell 2 and is connected with a rotating handle, the rotating handle can facilitate the rotation of the threaded rod 21, two nut blocks 22 are symmetrically connected to the threaded rod 21, one end of the nut block 22 extends to the outside of the adjusting shell 2 and is connected with the moving block 4, the pressure monitoring part comprises a pressure sensor 5 installed on the inside of the moving block 4, the bottom end of the nut block 22 is slidably sleeved on the surface of the guide rod 23, specifically, the guide rod 23 can stably position the nut block 22, so that the nut block 22 can stably move, two groups of threads with opposite directions are arranged on the threaded rod 21, and the threads are matched with the inner side wall of the nut block 22, when the threaded rod 21 is rotated, the two nut blocks 22 can move towards or away from each other.

[0022] In an optional embodiment: further comprising a lifting assembly, the lifting assembly comprises a hydraulic cylinder one 3 installed on the placing seat 1, the top end output shaft of the hydraulic cylinder one 3 is connected to the bottom end of the adjusting shell 2, the lifting assembly can control the adjusting pressure sensor 5 to measure at different height positions on the capacitor shell 100, facilitating experimental monitoring.

[0023] In an optional embodiment: further comprising a controller and a display, the hose 11 is provided with an electric control pressure gauge 9 and an electromagnetic valve 10, the air pump 8, the electric control pressure gauge 9, the electromagnetic valve 10, the display and the controller are connected, the connection mode is wireless communication or electrical connection, specifically, the air flow output end of the air pump is connected with the electric control pressure gauge, one end of the electric control pressure gauge is connected with the electromagnetic valve for on-off air flow, the electric control pressure gauge and the electromagnetic valve are connected to the controller through wires, the electric control pressure gauge can record the pressure value injected by the air pump, and the on-off of the air injection is performed by the electromagnetic valve, thereby facilitating the inflation.

[0024] Specifically, before detecting the pressure of the capacitor shell, the capacitor shell 100 is placed on the placing seat 1, and then the rotating handle is rotated to move the two pressure sensors 5 towards each other, so that the pressure detection end of the pressure sensor 5 contacts the capacitor shell. During detection, the air pump of the inflation assembly inflates into the capacitor shell, the high-pressure gas generated by the air pump is injected into the capacitor shell, the electric control pressure gauge records the injected pressure, when the pressure gradually increases, the capacitor shell deforms, the pressure sensor 5 monitors the pressure value when the capacitor deforms in real time, the data monitored by the pressure sensor 5 is transmitted to the display for observation, the whole working process of the device for pressure detection is completed, the scene process of the pressure test can be tracked throughout the process, and the air pressure test demand of the capacitor shell is met.

[0025] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thin-film capacitor pressure testing device, characterized by, The utility model provides a kind of test device for capacitor shell, including the placing seat (1) for placing capacitor shell (100), gas pressure increasing assembly and pressure deformation monitoring assembly, the pressure deformation monitoring assembly includes moving part and two groups of pressure monitoring parts, the moving part can be used to drive two groups of pressure monitoring parts to move oppositely or apart, when capacitor shell (100) is tested by pressure to the placing seat (1), the inside of capacitor shell (100) is inflated by gas pressure increasing assembly, and the pressure detection end of two groups of pressure monitoring parts is contacted to the side of capacitor shell (100) by moving part, to monitor the deformation when the inside of capacitor shell (100) is pressurized.

2. The thin film capacitive pressure testing device of claim 1, wherein: It also includes a base (15) and a protective cover (16), the placing seat (1) is installed on the top of the base (15), the top of the base (15) is provided with a clamping groove (150), and the protective cover (16) is clamped into the clamping groove (150) by a clamping block (161).

3. The thin film capacitive pressure testing device of claim 2, wherein: The gas pressure increasing assembly includes an L-shaped mounting bracket (6), a gas tank (7), a gas pump (8) and a gas nozzle (13), the L-shaped mounting bracket (6) is installed on the base (15), the gas tank (7) is installed on the L-shaped mounting bracket (6), the input end of the gas pump (8) is connected with the gas tank (7) through a pipeline, the output end of the gas pump (8) is connected with the gas nozzle (13) through a hose (11), the bottom of the gas nozzle (13) is connected with a rubber ring (14) matched with the gas inlet port of the capacitor shell (100), an electric telescopic rod (12) is installed on the L-shaped mounting bracket (6), and the output rod of the electric telescopic rod (12) is connected with the gas nozzle (13).

4. The thin film capacitive pressure testing device of claim 3, wherein: The moving part includes an adjusting shell (2) and a threaded rod (21), the threaded rod (21) is rotatably connected to the inside of the adjusting shell (2), one end of the threaded rod (21) extends to the outside of the adjusting shell (2) and is connected with a rotating handle, two nut blocks (22) are symmetrically connected with the threaded rod (21), one end of the nut block (22) extends to the outside of the adjusting shell (2) and is connected with a moving block (4), the pressure monitoring part includes a pressure sensor (5) installed on the inside of the moving block (4), and the bottom end of the nut block (22) is slidably sleeved on the surface of a guide rod (23).

5. The thin film capacitive pressure testing device of claim 4, wherein: It also includes a lifting assembly, the lifting assembly includes a hydraulic cylinder one (3) installed on the placing seat (1), and the top end output shaft of the hydraulic cylinder one (3) is connected to the bottom end of the adjusting shell (2).

6. The thin film capacitive pressure testing device of claim 5, wherein: It also includes a controller and a display, an electric control pressure gauge (9) and a solenoid valve (10) are installed on the hose (11), and the gas pump (8), the electric control pressure gauge (9), the solenoid valve (10), the display and the controller are connected.

Images