Capacitor withstand voltage testing device

Abstract

The utility model relates to the technical field of capacitor testing, and discloses a capacitor withstand voltage testing device, comprising a driven wheel, the back of which is engaged with a driving wheel, and the driving wheel is coaxially connected with a first driving motor; the high-voltage electric box is connected with a testing head, and a U-shaped seat is additionally arranged on the front surface and the back surface of the testing head; the electric telescopic rod is connected with the bottom of the driven wheel, a second driving motor is additionally arranged on the back face of the U-shaped seat, a two-way lead screw is additionally arranged in the center of an inner cavity of the U-shaped seat, and the two sides of the surface of the two-way lead screw are each sleeved with a sliding block; and third driving motors are mounted on the back surfaces of the connecting side plates. According to the capacitor withstand voltage testing device, a first driving motor drives a driving wheel, a driven wheel and a high-voltage electric box to rotate, an electric telescopic rod drives a U-shaped base to ascend and descend, a second driving motor enables a bidirectional lead screw to rotate, a sliding block drives a testing head to move, a third driving motor drives the testing head to rotate, and by adopting the mode, automatic control can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor testing, in particular to a capacitor withstand voltage testing device. Background Art

[0002] Capacitor, also known as "capacitance", refers to the storage of free charge under a given potential difference, denoted by C, and the international unit is Farad (F). From a physical point of view, capacitor is a static charge storage medium, and the charge may exist permanently. The main functions of capacitors include power filtering, signal filtering, signal coupling, resonance, filtering, compensation, charging and discharging, energy storage, and DC isolation. In order to test the voltage tolerance of the insulating material and insulation structure of the capacitor to ensure that the capacitor can withstand the highest voltage under normal use, a test device is required to perform a capacitor voltage withstand test.

[0003] Common capacitor withstand voltage test devices are usually composed of structures such as a high-voltage power supply, a control unit, a test fixture, a measurement and display unit, and a protection system. The capacitor is fixed by a test fixture, and the high-voltage power supply is applied to the capacitor. The measurement and display unit is responsible for measuring the current, voltage and other parameters during the test, and the measurement results are displayed. This is a common capacitor withstand voltage test device structure and usage method. Traditional capacitor withstand voltage test devices can only perform withstand voltage tests on a single capacitor, which reduces the test efficiency and seriously affects the capacitor withstand voltage test. Some capacitor withstand voltage test devices, by adding multiple groups of clamps and high-voltage power supplies, can simultaneously perform withstand voltage tests on multiple groups of capacitors. However, in this way, since capacitors have different types, and the positions and lengths of the electrodes on the capacitors are different, and since the lines on the high-voltage power supply cannot be automatically adjusted, it is not convenient to connect to the electrodes on different capacitors, making the withstand voltage test operation of the capacitor too complicated and inconvenient to operate and use. For this reason, a capacitor withstand voltage test device is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a capacitor withstand voltage test device to solve the technical problem that the circuit on the above-mentioned high-voltage power supply cannot be automatically adjusted.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a capacitor withstand voltage test device, comprising:

[0008] A test base 1, and a connecting top plate 2 arranged above the top of the test base 1, and driven wheels 3 are added to the top sides and the center of the connecting top plate 2, the back of the driven wheel 3 is meshed with a driving wheel 4, and the top of the driving wheel 4 is coaxially connected to a first driving motor 5;

[0009] The high-voltage electric box 6 is arranged on the top of the driven wheel 3, and the bottom lines of the high-voltage electric box 6 are extended downward by connecting the top of the top plate 2 and are connected to the test head 12. The front and back sides of the test head 12 are provided with a U-shaped seat 7;

[0010] The electric telescopic rod 20 is arranged on both sides of the top of the U-shaped seat 7 and connected to the bottom of the driven wheel 3. A second drive motor 8 is added to the back of the U-shaped seat 7. A bidirectional lead screw 9 is added to the center of the inner cavity of the U-shaped seat 7 and is coaxially connected to the second drive motor 8. Sliding blocks are sleeved on both sides of the surface of the bidirectional lead screw 9.

[0011] The connecting side plate 10 is arranged on the outside of the sliding block, and the back of the connecting side plate 10 is installed with a third driving motor 11, and is coaxially connected with the corresponding part of the test head 12. The first driving motor 5 drives the driving wheel 4 and the driven wheel 3 to rotate the high-voltage electric box 6 and its connecting structure to adjust the direction of the test head 12, and the electric telescopic rod 20 drives the U-shaped seat 7 and its connecting structure to rise and fall to adjust the height of the test head 12. The second driving motor 8 drives the bidirectional lead screw 9 to rotate, and the sliding block drives the test head 12 to move toward each other to adjust the distance between the two groups of test heads 12. The third driving motor 11 drives the test head 12 to rotate on the connecting side plate 10, thereby adjusting the use angle of the test head 12. On the one hand, automatic control can be performed so that the test head 12 contacts the electrode of the capacitor to perform a withstand voltage test; on the other hand, the test head 12 can be adjusted so that the withstand voltage test can be performed on different capacitors within a certain range, thereby improving the practicality of the device.

[0012] Preferably, hydraulic rods 13 are installed on both sides of the front and rear ends and the center of the top of the test base 1, and support legs are added on both sides of the bottom of the test base 1. The support legs provide stable support for the test base 1, and the hydraulic rods 13 can adjust the connection structure to move on the top of the test base 1.

[0013] Preferably, the telescopic ends of the hydraulic rod 13 are all equipped with connecting convex cylinders 14, and the rear end of the center position of the top of the surface of the connecting convex cylinder 14 is provided with a stopper head 16. The hydraulic rod 13 can drive the connecting convex cylinder 14 to perform reciprocating translational motion through the telescopic end, and the connecting convex cylinder 14 is connected to the corresponding structure through the stopper head 16.

[0014] Preferably, the inner cavity of the connecting convex cylinder 14 is hollow, and the inner cavity of the connecting convex cylinder 14 is provided with a reset spring 15. The connecting convex cylinder 14 can be pressed against the connecting structure by the reset spring 15 to ensure the stability of the connection between the limit head 16 and the corresponding structure.

[0015] Preferably, clamping plates 17 are provided on both sides of the top and the front and rear ends of the center of the test base 1, and a connecting concave cylinder 18 is installed at the center of the outer side of the clamping plate 17, and a limiting groove 19 is provided on the top of the connecting concave cylinder 18, which corresponds to the limiting head 16. The clamping plate 17 drives the connecting concave cylinder 18 to be inserted on the surface of the connecting convex cylinder 14 and then rotates, so that the limiting groove 19 corresponds to the limiting head 16, and under the action of the reset spring 15, the limiting groove 19 and the limiting head 16 are tightly connected, on the one hand, while ensuring the connection stability between the connecting convex cylinder 14 and the connecting concave cylinder 18, it is convenient to disassemble and assemble the connecting convex cylinder 14 and the connecting concave cylinder 18; on the other hand, the clamping plate 17 can be replaced within a certain range according to different capacitors, ensuring the stability of the capacitor during the withstand voltage test.

[0016] Preferably, the inner cavity of the connecting concave cylinder 18 is hollow, and the hole diameter is larger than the hole diameter of the connecting convex cylinder 14, and the connecting concave cylinder 18 and the connecting convex cylinder 14 are plug-connected. The connecting concave cylinder 18 is inserted into the surface of the connecting convex cylinder 14, and the connecting concave cylinder 18 and the connecting convex cylinder 14 are tightly fitted.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a capacitor withstand voltage test device, which has the following beneficial effects:

[0019] The capacitor withstand voltage test device drives the active wheel and the driven wheel through the first drive motor to rotate the high-voltage electric box and its connecting structure to adjust the direction of the test head, and the electric telescopic rod drives the U-shaped seat and its connecting structure to rise and fall to adjust the height of the test head. The second drive motor drives the bidirectional screw to rotate, and the sliding block drives the test heads to move toward each other to adjust the distance between the two groups of test heads. The third drive motor drives the test head to rotate on the connecting side plate to adjust the use angle of the test head. In this way, on the one hand, automatic control can be performed so that the test head contacts the electrode of the capacitor to perform a withstand voltage test; on the other hand, the test head can be adjusted so that the withstand voltage test can be performed on different capacitors within a certain range, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2This is a schematic diagram of the bottom structure of the utility model connecting the top plate in section;

[0022] Figure 3 This is a schematic diagram of the U-shaped seat and its connection structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the separation structure of the hydraulic rod and the clamping plate of the utility model.

[0024] In the figure: 1. test base; 2. connecting top plate; 3. driven wheel; 4. driving wheel; 5. first drive motor; 6. high-voltage electric box; 7. U-shaped seat; 8. second drive motor; 9. bidirectional screw; 10. connecting side plate; 11. third drive motor; 12. test head; 13. hydraulic rod; 14. connecting convex cylinder; 15. reset spring; 16. limit head; 17. clamping plate; 18. connecting concave cylinder; 19. limit groove; 20. electric telescopic rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution, a capacitor withstand voltage test device, comprising: Figure 1 , a test base 1, and a connecting top plate 2 arranged above the top of the test base 1, and driven wheels 3 are added to the top sides and center of the connecting top plate 2, the back of the driven wheel 3 is meshed with a driving wheel 4, and the top of the driving wheel 4 is coaxially connected to a first driving motor 5;

[0027] See also Figure 2 The high-voltage electric box 6 is arranged on the top of the driven wheel 3, and the bottom lines of the high-voltage electric box 6 are extended downward by connecting the top of the top plate 2 and are connected to the test head 12, and the front and back sides of the test head 12 are provided with a U-shaped seat 7;

[0028] See also Figure 3 The electric telescopic rod 20 is arranged on both sides of the top of the U-shaped seat 7 and connected to the bottom of the driven wheel 3, and a second drive motor 8 is added to the back of the U-shaped seat 7, and a bidirectional lead screw 9 is added to the center of the inner cavity of the U-shaped seat 7 and is coaxially connected to the second drive motor 8, and sliding blocks are sleeved on both sides of the surface of the bidirectional lead screw 9;

[0029] The connecting side plate 10 is arranged on the outside of the sliding block, and the back of the connecting side plate 10 is installed with a third driving motor 11, and is coaxially connected with the corresponding part of the test head 12. The first driving motor 5 drives the driving wheel 4 and the driven wheel 3 to rotate the high-voltage electric box 6 and its connecting structure to adjust the direction of the test head 12, and the electric telescopic rod 20 drives the U-shaped seat 7 and its connecting structure to rise and fall to adjust the height of the test head 12. The second driving motor 8 drives the bidirectional lead screw 9 to rotate, and the sliding block drives the test head 12 to move toward each other to adjust the distance between the two groups of test heads 12. The third driving motor 11 drives the test head 12 to rotate on the connecting side plate 10, thereby adjusting the use angle of the test head 12. On the one hand, automatic control can be performed so that the test head 12 contacts the electrode of the capacitor to perform a withstand voltage test; on the other hand, the test head 12 can be adjusted so that the withstand voltage test can be performed on different capacitors within a certain range, thereby improving the practicality of the device.

[0030] See also Figure 4 , hydraulic rods 13 are installed on both sides and the center of the front and rear ends of the top of the test base 1, and support legs are added on both sides of the bottom of the test base 1. The support legs provide stable support for the test base 1, and the hydraulic rod 13 can mobilize the connection structure to move on the top of the test base 1. The telescopic ends of the hydraulic rods 13 are installed with connecting convex cylinders 14, and the rear end of the center position of the top of the surface of the connecting convex cylinder 14 is provided with a limit head 16. The hydraulic rod 13 can drive the connecting convex cylinder 14 to perform reciprocating translational motion through the telescopic end, and the connecting convex cylinder 14 is connected to the corresponding structure through the limit head 16. The inner cavity of the connecting convex cylinder 14 is a hollow design, and the inner cavity of the connecting convex cylinder 14 is provided with a reset spring 15. The connecting convex cylinder 14 can press the connecting structure tightly through the reset spring 15 to ensure the stability of the connection between the limit head 16 and the corresponding structure. Clamps 17 are added to the top sides and the front and rear ends of the center of the test base 1, and the center of the outer side of the clamp 17 is installed with a connecting concave cylinder 18. The top of the connecting concave cylinder 18 is provided with a limiting groove 19, which corresponds to the limiting head 16. The clamp 17 drives the connecting concave cylinder 18 to be inserted on the surface of the connecting convex cylinder 14 and then rotates, so that the limiting groove 19 corresponds to the limiting head 16, and under the action of the reset spring 15, the limiting groove 19 and the limiting head 16 are tightly connected. On the one hand, the connection stability between the connecting convex cylinder 14 and the connecting concave cylinder 18 is ensured, and at the same time, it is convenient for the connecting convex cylinder 14 and the connecting concave cylinder 18 to be disassembled and assembled; on the other hand, the clamp 17 can be replaced within a certain range according to different capacitors, which ensures the stability of the capacitor during the withstand voltage test. The inner cavity of the connecting concave cylinder 18 is hollow, and the hole diameter is larger than the hole diameter of the connecting convex cylinder 14. The connecting concave cylinder 18 and the connecting convex cylinder 14 are plug-in connected. The connecting concave cylinder 18 is inserted into the surface of the connecting convex cylinder 14 , and the connecting concave cylinder 18 and the connecting convex cylinder 14 are tightly fitted.

[0031] This solution: The first drive motor 5 drives the driving wheel 4 and the driven wheel 3 to rotate the high-voltage electric box 6 and its connection structure to adjust the direction of the test head 12, and the electric telescopic rod 20 drives the U-shaped seat 7 and its connection structure to rise and fall to adjust the height of the test head 12. The second drive motor 8 drives the bidirectional lead screw 9 to rotate, and the sliding block drives the test head 12 to move toward each other to adjust the distance between the two groups of test heads 12, and the third drive motor 11 drives the test head 12 to rotate on the connecting side plate 10, so as to adjust the use angle of the test head 12. The clamping plate 17 drives the connecting concave cylinder 18 to be inserted on the surface of the connecting convex cylinder 14 and then rotates, so that the limit groove 19 corresponds to the limit head 16, and under the action of the reset spring 15, the limit groove 19 and the limit head 16 are tightly connected.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A capacitor withstand voltage test device, characterized in that: include: A test base (1), and a connecting top plate (2) arranged above the top of the test base (1), and driven wheels (3) are provided on both sides and the center of the top of the connecting top plate (2), the back of the driven wheel (3) is meshed with a driving wheel (4), and the top of the driving wheel (4) is coaxially connected to a first driving motor (5); A high-voltage electric box (6) is arranged on the top of the driven wheel (3), and the bottom lines of the high-voltage electric box (6) are all extended downward through the top of the connecting top plate (2) and are connected to a test head (12), and a U-shaped seat (7) is added to the front and back of the test head (12); The electric telescopic rod (20) is arranged on both sides of the top of the U-shaped seat (7) and connected to the bottom of the driven wheel (3), and a second drive motor (8) is added to the back of the U-shaped seat (7). A bidirectional lead screw (9) is added to the center of the inner cavity of the U-shaped seat (7) and is coaxially connected to the second drive motor (8), and sliding blocks are sleeved on both sides of the surface of the bidirectional lead screw (9); The connecting side plate (10) is arranged on the outside of the sliding block, and a third driving motor (11) is installed on the back side of the connecting side plate (10) and is coaxially connected to a corresponding position of the test head (12).

2. A capacitor withstand voltage test device according to claim 1, characterized in that: Hydraulic rods (13) are installed on both sides of the front and rear ends and the center of the top of the test base (1), and supporting legs are added on both sides of the bottom of the test base (1).

3. A capacitor withstand voltage test device according to claim 2, characterized in that: The telescopic ends of the hydraulic rods (13) are all provided with connecting convex cylinders (14), and the rear end of the center position of the top of the surface of the connecting convex cylinders (14) is provided with a limiting head (16).

4. A capacitor withstand voltage test device according to claim 3, characterized in that: The inner cavity of the connecting convex cylinder (14) is of hollow design, and the inner cavity of the connecting convex cylinder (14) is provided with a return spring (15).

5. A capacitor withstand voltage test device according to claim 4, characterized in that: Clamps (17) are provided on both sides of the top and the front and rear ends of the center of the test base (1), and a connecting concave cylinder (18) is installed at the center of the outer side of the clamp (17). The top of the connecting concave cylinder (18) is provided with a limiting groove (19) corresponding to the limiting head (16).

6. A capacitor withstand voltage test device according to claim 5, characterized in that: The inner cavity of the connecting concave cylinder (18) is of hollow design, and the hole diameter is larger than the hole diameter of the connecting convex cylinder (14). The connecting concave cylinder (18) and the connecting convex cylinder (14) are plug-connected.

Images