Capacitor leak detection device

Abstract

The utility model discloses a capacitor leak detection device, which comprises a base, a cavity is arranged inside the base, a turntable is rotatably arranged at the top of the base, three placing tables are fixedly arranged at the top of the turntable and are distributed in an annular array by taking the circle center of the turntable as the circle center, and the bottom end of a main shaft of the turntable is arranged in the cavity of the base. A first gear is installed at the bottom end of a main shaft of the rotating disc, a first servo motor is installed in the base, a second gear is installed on an output shaft of the first servo motor, and the second gear is meshed with the first gear; according to the device, the rotatable turntable is arranged on the base, the three placement tables distributed in the annular array are arranged on the turntable, and capacitors to be detected can be placed on the three placement tables, so that when the previous capacitor to be detected is being detected, the next capacitor to be detected can be manually placed on the empty placement table in advance; and when the leak detection of the previous capacitor is finished, the next capacitor to be detected can be directly transferred to the lower part of the lower pressing piece for detection.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor leak detection, and specifically relates to a capacitor leak detection device. Background Art

[0002] A capacitor is an important device for correcting the power factor in the power system. Capacitors must have good sealing performance. Therefore, leak detection of the capacitor housing is a very important operation. The existing patent with the publication number CN115876394A proposes a capacitor leak detection device. This device pumps air into the housing of the capacitor and then judges whether the housing of the capacitor leaks through the detection of a gas leak detector. However, since this device only has one insertion cylinder for positioning the capacitor, when in use, it is necessary to wait for the previous capacitor to be detected and then remove the detected capacitor before placing the next capacitor in the insertion cylinder, which greatly reduces the working efficiency of capacitor leak detection.

[0003] Therefore, we design a capacitor leak detection device here. Content of the Utility Model

[0004] The purpose of the utility model is to provide a capacitor leak detection device for the deficiencies of the existing technology to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A capacitor leak detection device includes a base. A cavity is arranged inside the base. A turntable is rotatably installed at the top of the base. Three placement platforms are fixedly installed at the top of the turntable. The three placement platforms are distributed in a circular array around the center of the turntable. The bottom end of the main shaft of the turntable is arranged inside the cavity of the base. A first gear is installed at the bottom end of the main shaft of the turntable. A first servo motor is installed inside the base. A second gear is installed on the output shaft of the first servo motor. The second gear meshes with the first gear.

[0006] An L-shaped plate that can be flipped 180 degrees is installed at the top of the base. A circular plate is rotatably installed at the bottom of the horizontal plate of the L-shaped plate. Two first electric push rods that are symmetric about the central axis of the circular plate are installed at the bottom of the circular plate. The output rods of the two first electric push rods are both vertically downward, and the ends of the output rods are both installed with a housing. Gas leak detectors are installed inside both housings. A second electric push rod with a vertically downward output rod is installed at the bottom of the horizontal plate of the L-shaped plate. The output rod of the second electric push rod is on the central axis of the circular plate, and a pressing member is installed at the end of the output rod of the second electric push rod.

[0007] An external gear ring is installed on the outside of the circular plate. A second servo motor is installed at the top of the L-shaped plate. The output shaft of the second servo motor penetrates through the horizontal plate of the L-shaped plate and is installed with a third gear. The third gear meshes with the external gear ring.

[0008] Preferably, the sensor of the gas leak detector is fixed on the outer side of the housing on the output rod of the first electric push rod. The sensors of the two gas leak detectors are arranged opposite to each other, and the orientations of the two sensors are both perpendicular to the central axis of the output rod of the second electric push rod.

[0009] Preferably, the placement table includes a cylinder. The bottom of the cylinder is fixed on the turntable, and a cylindrical groove is provided at the top of the cylinder. A plugging column is installed at the center position of the bottom of the cylindrical groove, and a first sealing ring is sleeved outside the plugging column.

[0010] Preferably, the pressing member includes a circular tube. A cross-shaped plate is fixedly installed on the outer side of the circular tube. A circular pressing plate is arranged below the circular tube. Four sliding rods are installed on the top of the circular pressing plate and are distributed in an annular array around the central axis of the circular pressing plate. The four sliding rods are all slidably installed on the cross-shaped plate, and springs are sleeved on the four sliding rods. The springs are abutted between the cross-shaped plate and the circular pressing plate.

[0011] Preferably, the top end of the circular tube is fixed to the bottom end of the output rod of the second electric push rod. An air inlet is provided at a position near the top end on the side surface of the circular tube. An air inlet hose is connected to the air inlet. An air outlet is provided at the bottom end of the circular tube. An insertion tube is installed at the air outlet, and a second sealing ring is sleeved outside the insertion tube.

[0012] Preferably, a cylindrical groove is provided at the bottom of the circular pressing plate, and a circular through hole is provided at the center position of the top of the cylindrical groove.

[0013] Compared with the prior art, the present utility model provides a capacitor leak detection device, which has the following

[0014] Beneficial effects:

[0015] In this capacitor leak detection device, a rotatable turntable is provided on the base, and three placement tables are provided on the turntable and are distributed in an annular array. Capacitors to be detected can be placed on all three placement tables. When the previous capacitor to be detected is being detected, an operator can place the next capacitor to be detected on the empty placement table in advance. When the detection of the previous capacitor is completed, the next capacitor to be detected can be directly rotated under the pressing member for detection. This device utilizes the time during the detection process of the previous capacitor to fix the next capacitor, greatly improving the working efficiency of capacitor leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a front sectional view of the base of the present utility model;

[0018] Figure 3 is a schematic diagram of the bottom structure of the L-shaped plate of the present utility model;

[0019] Figure 4 Schematic diagram of the placement table structure of the present utility model;

[0020] Figure 5 Schematic diagram of the pressing member structure of the present utility model;

[0021] Figure 6 Schematic diagram of the working state of the present utility model.

[0022] Reference numerals: 1, base; 2, turntable; 3, placement table; 31, cylinder; 32, plugging column; 33, first sealing ring; 4, first gear; 5, first servo motor; 6, second gear; 7, L-shaped plate; 8, annular plate; 9, first electric push rod; 10, gas leak detector; 11, second electric push rod; 12, pressing member; 121, circular tube; 122, cross plate; 123, circular pressing plate; 124, slide bar; 125, spring; 126, insertion tube; 127, second sealing ring; 13, external gear ring; 14, third gear; 15, second servo motor; 16, intake hose; 17, capacitor to be tested. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 6 In this implementation: A capacitor leak detection device includes a base 1. Please refer to Figure 1 and Figure 2 The interior of the base 1 is provided with a cavity. A turntable 2 is rotatably installed on the top of the base 1. Three placement tables 3 are fixedly installed on the top of the turntable 2. The three placement tables 3 are distributed in an annular array around the center of the turntable 2. The placement table 3 is used to place the capacitor 17 to be tested. The bottom end of the main shaft of the turntable 2 is arranged in the cavity of the base 1. A first gear 4 is installed at the bottom end of the main shaft of the turntable 2. A first servo motor 5 is installed inside the base 1. A second gear 6 is installed on the output shaft of the first servo motor 5. The second gear 6 meshes with the first gear 4. By driving the first servo motor 5 and the transmission between the first gear 4 and the second gear 6, the rotation of the turntable 2 can be controlled, so as to play the role of switching the placement table 3. The first servo motor 5 is connected to the controller. Each time the first servo motor 5 is started, it only drives the turntable 2 to rotate counterclockwise by one-third of a turn.

[0025] Please refer to Figure 3, a top of the base 1 is provided with an L-shaped plate 7 that is flipped 180 degrees. A bottom of a horizontal plate of the L-shaped plate 7 is rotatably provided with an annular plate 8. A bottom of the annular plate 8 is provided with two first electric push rods 9 that are symmetrically arranged left and right with respect to an axis of the annular plate 8. Output rods of the two first electric push rods 9 are vertically downward, and ends of the output rods are provided with housings. Inside of the two housings are provided with gas leak detectors 10. A sensor of the gas leak detector 10 is fixed on an outside of the housing on the output rod of the first electric push rod 9. The two sensors of the gas leak detectors 10 are oppositely arranged, and orientations of the two sensors are both perpendicular to an axis of the output rod of the second electric push rod 11. The function of the gas leak detector 10 is to detect whether an outside of a capacitor to be detected 17 leaks. The first electric push rod 9 is connected to a controller. The function of the first electric push rod 9 is to control lifting of the gas leak detector 10.

[0026] The bottom of the horizontal plate of the L-shaped plate 7 is provided with a second electric push rod 11 with an output rod vertically downward. The output rod of the second electric push rod 11 is on an axis of the annular plate 8. An end of the output rod of the second electric push rod 11 is provided with a pressing member 12. The second electric push rod 11 is connected to the controller. The function of the second electric push rod 11 is to control lifting of the pressing member 12. The turntable 2 can turn a single placement table 3 to a position directly below the pressing member 12. Through cooperation between the placement table 3 and the pressing member 12, the capacitor to be detected can be fixed.

[0027] An outside of the annular plate 8 is provided with an external gear ring 13. A top of the L-shaped plate 7 is provided with a second servo motor 15. An output shaft of the second servo motor 15 penetrates through the horizontal plate of the L-shaped plate 7 and is provided with a third gear 14. The third gear 14 meshes with the external gear ring 13. Through driving of the second servo motor 15 and meshing between the external gear ring 13 and the third gear 14, rotation of the annular plate 8 can be controlled, thereby driving the gas leak detector 10 to rotate. The second servo motor 15 is connected to the controller. Each time the second servo motor 15 starts, it only drives the annular plate 8 to rotate clockwise or counterclockwise by half a turn, and clockwise rotation and counterclockwise rotation alternate. When detecting the capacitor to be detected 17, after the second servo motor 15 drives the annular plate 8 to rotate by half a turn each time, the first electric push rod 9 drives the gas leak detector 10 to move downward a small distance, and then the second servo motor 15 starts again, so that the gas leak detector 10 performs a full-round leak detection on the outer shell of the capacitor to be detected 17.

[0028] Please refer to Figure 4, the placement table 3 includes a cylinder 31. The bottom of the cylinder 31 is fixed on the turntable 2. The fixing method of the cylinder 31 can adopt detachable fixing methods such as screw fixing or snap fixing. A cylinder groove is provided at the top of the cylinder 31. A plugging column 32 is installed at the center position of the bottom of the cylinder groove. The radius of the cylinder groove should be slightly larger than the outer circle radius of the shell of the capacitor to be inspected 17. The radius of the plugging column 32 should be equal to the radius of the round hole at the bottom of the shell of the capacitor to be inspected 17. A first sealing ring 33 is sleeved outside the plugging column 32. When the bottom of the capacitor to be inspected 17 is inserted into the cylinder groove on the cylinder 31, the plugging column 32 can just be inserted into the round hole at the bottom of the shell of the capacitor to be inspected 17. The function of the first sealing ring 33 is to ensure the seal at the bottom of the shell of the capacitor to be inspected 17.

[0029] Please refer to Figure 5 , the pressing member 12 includes a round tube 121. A cross plate 122 is fixedly installed outside the round tube 121. A round pressing plate 123 is provided below the round tube 121. Four sliding rods 124 distributed in an annular array around the central axis of the round pressing plate 123 are installed at the top of the round pressing plate 123. The four sliding rods 124 are all slidably installed on the cross plate 122. Springs 125 are sleeved on the four sliding rods 124. The springs 125 are abutted between the cross plate 122 and the round pressing plate 123. The top end of the round tube 121 is fixed to the bottom end of the output rod of the second electric push rod 11. An air inlet is provided at a position near the top end on the side of the round tube 121. An air inlet hose 16 is connected to the air inlet. On the top plate of the L-shaped plate 7 and at a position inside the annular plate 8, a through hole is provided. The end of the air inlet hose 16 passes through the through hole and is connected to an external air pumping device. An air outlet is provided at the bottom end of the round tube 121. An insertion tube 126 is installed at the air outlet. A second sealing ring 127 is sleeved outside the insertion tube 126. A cylinder groove is provided at the bottom of the round pressing plate 123. A round through hole is provided at the center position of the top of the cylinder groove. The radius of the cylinder groove should be slightly larger than the outer circle radius of the shell of the capacitor to be inspected 17. The outer circle radius of the insertion tube 126 should be equal to the radius of the round hole at the top of the shell of the capacitor to be inspected 17. A chamfer is provided at the outer edge of the bottom end of the insertion tube 126. Please refer to Figure 6, when the capacitor 17 to be tested is placed on the placement table 3 directly below the pressing member 12, during the process of controlling the pressing member 12 to press down, the top of the outer shell of the capacitor 17 to be tested will first be inserted into the cylindrical groove at the bottom of the circular pressing plate 123, and the round hole at the top of the outer shell of the capacitor 17 to be tested will be exposed from the round through hole on the circular pressing plate 123. Then, the round tube 121 and the cross plate 122 continue to move downward, and the insertion tube 126 will be inserted into the round hole at the top of the outer shell of the capacitor 17 to be tested, and the second sealing ring 127 will ensure the sealing of the round hole at the top of the outer shell. The spring 125 will squeeze the circular pressing plate 123, so that the circular pressing plate 123 and the cylinder of the placement table 3 cooperate to fix the capacitor 17 to be tested. After the capacitor 17 to be tested is fixed, air is pumped into the outer shell of the capacitor 17 to be tested through the air inlet hose 16, and then through the detection of the gas leak detector 10, it can be judged whether there is leakage in the outer shell of the capacitor 17 to be tested.

[0030] The working principle and usage process of the present utility model: When this capacitor leak detection device is in use, the capacitor 17 to be tested is placed on the empty placement table 3, and the plugging column 32 plugs the round hole at the bottom of the outer shell of the capacitor 17 to be tested. Then, the first servo motor 5 is started, and the placement table 3 with the capacitor 17 to be tested is rotated to directly below the pressing member 12. The second electric push rod 11 is started to control the pressing member 12 to press against the top of the outer shell of the capacitor 17 to be tested, and the insertion tube 126 is inserted into the round hole at the top of the outer shell of the capacitor 17 to be tested. Then, a certain amount of gas is pumped into the outer shell of the capacitor 17 to be tested. The first electric push rod 9 and the second servo motor 15 are started to control the gas leak detector 10 to perform a full - range leak detection on the outer shell of the capacitor 17 to be tested. During the period when this device is performing leak detection on the capacitor 17 to be tested, the next capacitors 17 to be tested can be successively placed on the empty placement table 3. After the first capacitor is leak - detected, the gas leak detector 10 and the pressing member 12 return to their original positions. Then, the first servo motor 5 drives the turntable 2 to rotate one - third of a circle and then starts the leak detection operation again. The leak - detected capacitor is taken off, and the next capacitor 17 to be tested is placed on the empty placement table 3.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A capacitor leakage detection device, comprising a base (1), characterized in that: The base (1) is provided with a cavity inside, a turntable (2) is rotatably mounted on the top of the base (1), three placement platforms (3) are fixedly mounted on the top of the turntable (2), and the three placement platforms (3) are distributed in a circular array with the center of the turntable (2), the bottom end of the main shaft of the turntable (2) is arranged in the cavity of the base (1), the bottom end of the main shaft of the turntable (2) is mounted with a first gear (4), a first servo motor (5) is mounted inside the base (1), a second gear (6) is mounted on the output shaft of the first servo motor (5), and the second gear (6) is meshed with the first gear (4); The top of the base (1) is provided with an L-shaped plate (7) that is turned 180 degrees, the bottom of the horizontal plate of the L-shaped plate (7) is rotatably provided with an annular plate (8), the bottom of the annular plate (8) is provided with two first electric push rods (9) that are symmetrical with respect to the central axis of the annular plate (8), the output rods of the two first electric push rods (9) are both vertically downward, and the ends of the output rods are both provided with shells, and gas leak detectors (10) are both provided inside the two shells, the bottom of the horizontal plate of the L-shaped plate (7) is provided with a second electric push rod (11) with an output rod vertically downward, the output rod of the second electric push rod (11) is on the central axis of the annular plate (8), and the end of the output rod of the second electric push rod (11) is provided with a pressing piece (12); An outer gear ring (13) is installed on the outer side of the annular plate (8), a second servo motor (15) is installed on the top of the L-shaped plate (7), an output shaft of the second servo motor (15) passes through the horizontal plate of the L-shaped plate (7) and is installed with a third gear (14), and the third gear (14) is meshed with the outer gear ring (13).

2. A capacitor leakage detection device according to claim 1, characterized in that: The sensor of the gas leak detector (10) is fixed to the outside of the housing on the output rod of the first electric push rod (9), the two sensors of the gas leak detector (10) are arranged opposite to each other, and the orientations of the two sensors are perpendicular to the central axis of the output rod of the second electric push rod (11).

3. A capacitor leakage detection device according to claim 1, characterized in that: The placement platform (3) comprises a cylinder (31), the bottom of which is fixed on the turntable (2), the top of which is provided with a cylindrical groove, a blocking column (32) is installed at the center of the bottom of the cylindrical groove, and a first sealing ring (33) is sleeved on the outer side of the blocking column (32).

4. A capacitor leakage detection device according to claim 1, characterized in that: The pressing member (12) comprises a circular tube (121), a cross plate (122) is fixedly mounted on the outer side of the circular tube (121), a circular pressure plate (123) is arranged below the circular tube (121), four sliding rods (124) are arranged on the top of the circular pressure plate (123) and are distributed in a circular array with respect to the central axis of the circular pressure plate (123), the four sliding rods (124) are all slidably mounted on the cross plate (122), the four sliding rods (124) are all sleeved with springs (125), and the springs (125) are pressed between the cross plate (122) and the circular pressure plate (123).

5. A capacitor leakage detection device according to claim 4, characterized in that: The top end of the circular tube (121) is fixed to the bottom end of the output rod of the second electric push rod (11); an air inlet is arranged on the side of the circular tube (121) near the top end, and an air inlet hose (16) is connected to the air inlet; an air outlet is arranged at the bottom end of the circular tube (121), and a plug (126) is installed at the air outlet; a second sealing ring (127) is sleeved on the outer side of the plug (126).

6. A capacitor leakage detection device according to claim 4, characterized in that: A cylindrical groove is arranged at the bottom of the circular pressure plate (123), and a circular through hole is arranged at the center position of the top of the cylindrical groove.

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