Device for detecting heat dissipation performance of capacitor shell

Abstract

The invention discloses a capacitor shell heat dissipation performance detection device, and relates to the technical field of detection devices, the capacitor shell heat dissipation performance detection device comprises a box body, a sleeve is arranged on the inner top surface of a thermostat, a movable column is elastically arranged in the sleeve, a mounting plate is arranged at the bottom of the movable column, and a temperature sensor is arranged at the bottom of the mounting plate; a gear and a driving piece are arranged on the outer wall of the connecting shaft; a box cover is arranged on the top face of the connecting plate, a first connecting frame is arranged on the bottom face of the connecting plate, and a heating assembly is arranged on the box cover. An electric push rod is arranged on the supporting plate; a driving mechanism is arranged at the movable end of the electric push rod; through the use of the driving mechanism, the temperature of the capacitor shell before heating is measured, a detection standard is obtained, and the self-comparison effect is achieved; and finally, electrifying the heater to work, simulating the heat generated by the normal work of the capacitor, then detecting the current temperature of the surface of the capacitor shell, and comparing the temperature of the capacitor shell before heating to obtain the heat dissipation performance of the capacitor shell.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, and in particular to a device for detecting the heat dissipation performance of a capacitor housing. Background Art

[0002] The capacitor shell is an external shell that protects the internal structure of the capacitor. Its role is crucial. When the capacitor is working, its internal electrical components will generate heat. If the heat dissipation performance of the shell is poor, the internal temperature of the capacitor will rise sharply, which will cause a series of problems. Excessive temperature will accelerate the drying of the electrolyte inside the capacitor, reduce its capacitance, and shorten the service life of the capacitor. It may also increase the equivalent series resistance of the capacitor, resulting in increased energy loss and even capacitor failure, seriously affecting the normal operation of electronic equipment. Therefore, when processing the capacitor shell, it is necessary to test the heat dissipation performance of the capacitor shell. However, there are currently two ways to test the heat dissipation performance of capacitor casings. One is manual testing, which relies on manual experience or simple temperature measurement tools and cannot accurately simulate the heat generation of capacitors in actual work, resulting in a large deviation between the test results and the actual application scenarios, making it difficult to accurately evaluate the heat dissipation performance of the capacitor casing. The other method uses a detection device for testing, but the existing detection device has a complex structure and cumbersome operation, which not only increases the detection cost and time, but also requires high professional skills of the test personnel, which is not conducive to large-scale promotion and application. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention proposes a device for detecting the heat dissipation performance of a capacitor casing.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A device for detecting the heat dissipation performance of a capacitor housing comprises a housing and a pressure sensor arranged on the inner wall of the housing, and further comprises: Constant temperature box: the constant temperature box is installed on the top surface of the box body, a sleeve is provided on the top surface of the constant temperature box, a movable column is elastically provided in the sleeve, a mounting plate is provided at the bottom of the movable column, and a temperature sensor is provided at the bottom of the mounting plate; Connecting shaft: The connecting shaft is rotatably arranged in the box body, and a gear and a driving member for driving the movable column are arranged on the outer wall of the connecting shaft; Rectangular opening: the rectangular opening is opened on the top surface of the box body, a connecting plate is slidably arranged in the rectangular opening, a box cover matching the thermostatic box is arranged on the top surface of the connecting plate, and a connecting frame is arranged on the bottom surface, and a heating component for heating the capacitor shell is arranged on the box cover; Support plate: The support plate is fixedly connected to the top surface of the box body, and an electric push rod is arranged on the support plate. The movable end of the electric push rod is provided with a driving mechanism for driving the connecting frame and the gear.

[0005] Preferably, the driving mechanism includes a connecting frame 2 arranged at the movable end of the electric push rod, a rectangular frame arranged on the connecting frame 2, a movable block slidably arranged in the rectangular frame, and an extrusion spring, and the movable block is fixedly connected to the connecting frame 1, and a bar-shaped tooth plate matching the gear is provided on the side of the rectangular frame through the connecting frame 3.

[0006] Preferably, the heating assembly includes a bottom plate arranged on the bottom surface of the box cover, a movable plate slidably arranged on the side surface of the box cover and a heater arranged on the top surface of the movable plate, a plurality of return springs are arranged between the movable plate and the bottom plate, a conductive plate 1 is arranged on the bottom surface of the movable plate, and a conductive plate 2 matching the conductive plate 1 is arranged on the top surface of the bottom plate.

[0007] Preferably, the first conductive plate is electrically connected to the heater via a wire, and the second conductive plate is electrically connected to an external power source.

[0008] Preferably, a control device is provided on the front end surface of the box body, and the control device includes a processor, a controller and a display, and the processor and the pressure sensor and the temperature sensor are electrically connected through wires, and the controller and the constant temperature box and the display are electrically connected through wires.

[0009] Preferably, the driving member includes a winch wheel arranged on the outer walls at both ends of the connecting shaft and a traction rope wound in the winch wheel, the outer wall of the sleeve is symmetrically provided with strip openings, a connecting rod matching the strip opening is fixedly connected to the outer wall of the movable column, a strip slide groove is provided on the inner wall of the box body, and one end of the connecting rod extends into the strip slide groove, a circular hole is provided on the top surface of the box body, and the top of the traction rope movably passes through the circular hole to extend into the constant temperature box and is fixedly connected to the connecting rod.

[0010] Preferably, the top and bottom of the circular hole are both wide-mouthed, and a plurality of annular sealing pads matching the circular hole are evenly arranged on the outer wall of the traction rope.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The present invention facilitates to first drive the box cover to move by using a driving mechanism, so that the capacitor shell moves to the bottom of the temperature sensor, and closes the box cover and the thermostatic box, providing a stable environment for the heat dissipation performance detection of the capacitor shell, and improving the accuracy of the heat dissipation performance detection of the capacitor shell; then, the temperature sensor is brought into contact with the capacitor shell to fix the capacitor shell, thereby avoiding the phenomenon of the capacitor shell tipping over or moving when the capacitor shell is detected, thereby avoiding the safety accident of electric shock, and further facilitating the detection of the heat dissipation performance of the capacitor shell; at the same time, the temperature of the capacitor shell before heating is measured to obtain a detection standard, and self- The contrast effect is beneficial to the detection of the heat dissipation performance of the capacitor casing; finally, the heater is powered on to simulate the heat generated by the normal operation of the capacitor, and then the current surface temperature of the capacitor casing is detected, and the heat dissipation performance of the capacitor casing is obtained by comparing the temperature of the capacitor casing before heating; wherein, by providing an annular sealing gasket on the traction rope, it is convenient to seal the circular hole, avoid the heat in the constant temperature box from leaking from the circular hole, avoid the temperature imbalance in the constant temperature box, thereby improving the accuracy of the detection of the heat dissipation performance of the capacitor casing; at the same time, it also avoids the contact between the traction rope and the circular hole, thereby avoiding the damage of the traction rope due to friction, and further facilitating the protection of the traction rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It shows a schematic structural diagram of a front viewing angle provided by an embodiment of the present invention; Figure 2 It shows a schematic structural diagram of a rear viewing angle provided by an embodiment of the present invention; Figure 3 A schematic diagram of a cross-sectional structure at a front viewing angle provided by an embodiment of the present invention is shown; Figure 4 A schematic structural diagram of a driving mechanism according to a first viewing angle is shown; Figure 5 A schematic diagram of the structure of a driving member provided according to an embodiment of the present invention is shown; Figure 6 A cross-sectional view of a sleeve provided according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the structure of a driving mechanism according to a second viewing angle is shown; Figure 8 A schematic structural diagram of the connection between a traction rope and an annular sealing pad provided according to an embodiment of the present invention is shown.

[0013] Legend: 1. Box body; 2. Constant temperature box; 3. Box cover; 4. Control device; 5. Movable plate; 6. Flexible rubber sleeve; 7. Bottom plate; 8. Connecting rod; 9. Sleeve; 10. Connecting shaft; 11. Gear; 12. Traction rope; 13. Reset spring; 14. Heater; 15. Conductive plate 1; 16. Conductive plate 2; 17. Strip tooth plate; 18. Rectangular frame; 19. Movable block; 20. Extrusion spring; 21. Connecting plate; 22. Connecting frame 1; 23. Rectangular opening; 24. Winch; 25. Mounting plate; 26. Temperature sensor; 27. Strip opening; 28. Tension spring; 29. ​​Movable column; 30. Connecting frame 2; 31. Electric push rod; 32. Connecting frame 3; 33. Support plate; 34. Strip slide; 35. Pressure sensor; 36. Ring sealing gasket; 37. Circular hole. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0015] See also Figure 1 - Figure 8 , the present invention provides a technical solution: A device for detecting the heat dissipation performance of a capacitor housing comprises a housing 1 and a pressure sensor 35 arranged on the inner wall of the housing 1; a thermostat 2 (the prior art) is fixedly installed at the edge of the top surface of the housing 1 by bolts, and the temperature in the thermostat 2 is adjustable, which is used to provide a detection environment for the capacitor housing; a sleeve 9 is installed on the top surface of the thermostat 2 by bolts, a movable column 29 is slidably arranged in the sleeve 9, and a tension spring 28 is arranged between the movable column 29 and the sleeve 9, which is used for automatic reset of the movable column 29; a mounting plate 25 is installed at the bottom of the movable column 29 by bolts, which is used for installing a temperature sensor 26; a temperature sensor 26 is arranged at the bottom of the mounting plate 25, which is used to detect the temperature of the surface of the capacitor housing, so as to facilitate the detection of the heat dissipation performance of the capacitor housing; A connecting shaft 10 is rotatably provided in the box body 1, and a gear 11 and a driving member for driving the movable column 29 are provided on the outer wall of the connecting shaft 10. The use of the driving member facilitates the movement of the temperature sensor 26, so that the temperature sensor 26 is conveniently brought into contact with the capacitor housing, thereby facilitating the detection of the heat dissipation performance of the capacitor housing; A rectangular opening 23 is provided in the middle of the top surface of the box body 1, and a connecting plate 21 is slidably provided in the rectangular opening 23. A box cover 3 matching with the constant temperature box 2 is provided on the top surface of the connecting plate 21, and a connecting frame 22 is provided on the bottom surface. A heating component for heating the capacitor shell is provided on the box cover 3; by using the heating component, it is convenient to heat the inside of the capacitor shell, and the heat generated by the model capacitor when working, so as to improve the accuracy of the heat dissipation performance of the capacitor shell; A support plate 33 is installed on the top surface of the box body 1 by bolts, and an electric push rod 31 is installed on the support plate 33 by bolts for providing power; the movable end of the electric push rod 31 is provided with a driving mechanism for driving the connecting frame 22 and the gear 11; through the use of the driving mechanism, it is convenient to first drive the box cover 3 to move, so that the capacitor housing moves to the bottom of the temperature sensor 26, and the box cover 3 and the constant temperature box 2 are closed, providing a stable environment for the heat dissipation performance detection of the capacitor housing, and improving the accuracy of the heat dissipation performance detection of the capacitor housing; then the temperature sensor 26 is brought into contact with the capacitor housing to fix the capacitor housing, avoid the phenomenon of the capacitor housing tipping or moving when the capacitor housing is detected, thereby avoiding the safety accident of electric shock, and further facilitating the detection of the heat dissipation performance of the capacitor housing; at the same time, the temperature of the capacitor housing before heating is measured to obtain a detection standard, achieve the effect of self-comparison, and thus facilitate the detection of the heat dissipation performance of the capacitor housing; finally, the heater 14 is powered on to simulate the heat emitted by the normal operation of the capacitor, and then the temperature of the current surface of the capacitor housing is detected, and the heat dissipation performance of the capacitor housing is obtained by comparing the temperature of the capacitor housing before heating.

[0016] In the present invention, the driving mechanism includes a connecting frame 2 30 arranged at the movable end of the electric push rod 31, a rectangular frame 18 arranged on the connecting frame 2 30, a movable block 19 slidably arranged in the rectangular frame 18, and an extrusion spring 20, and the extrusion spring 20 is one end of the fixed end of the electric push rod 31, which is used to squeeze the movable block 19, so that the movable block 19 moves synchronously with the rectangular frame 18; and the movable block 19 is fixedly connected to the connecting frame 1 22, and a bar-shaped tooth plate 17 matching the gear 11 is provided on the side of the rectangular frame 18 through the connecting frame 3 32.

[0017] In the present invention, the heating assembly includes a bottom plate 7 arranged on the bottom surface of the box cover 3, a movable plate 5 slidably arranged on the side of the box cover 3 and a heater 14 arranged on the top surface of the movable plate 5, and a plurality of reset springs 13 are arranged between the movable plate 5 and the bottom plate 7, which are used for automatic reset of the movable plate 5, thereby realizing power off of the heater 14; wherein, a flexible rubber sleeve 6 is sleeved between the bottom plate 7 and the movable plate 5 to avoid exposure of the conductive plate 1 15 and the conductive plate 2 16, thereby avoiding the occurrence of electric shock, and further improving the safety of the detection device; a conductive plate 15 is arranged on the bottom surface of the movable plate 5, and a conductive plate 2 16 matching the conductive plate 15 is arranged on the top surface of the bottom plate 7, the conductive plate 15 and the heater 14 are electrically connected through a wire, and the conductive plate 2 16 is electrically connected to an external power supply; through the mutual cooperation of the conductive plate 2 16, the conductive plate 15 and the reset spring 13, it is convenient to control the power-on operation of the heater 14, avoid continuous power-on of the heater 14, thereby avoiding waste of electric energy and saving resources.

[0018] In the present invention, a control device 4 is provided on the front end surface of the box body 1, and the control device 4 includes a processor, a controller and a display, and the processor and the pressure sensor 35 and the temperature sensor 26 are electrically connected through wires, and the controller and the constant temperature box 2 and the display are electrically connected through wires; it is used to control the constant temperature box 2 to power on and also control the temperature sensor 26 to measure the temperature of the capacitor housing.

[0019] In the present invention, the driving member includes a winch wheel 24 arranged on the outer walls of both ends of the connecting shaft 10 and a traction rope 12 wound in the winch wheel 24, a strip opening 27 is symmetrically opened on the outer wall of the sleeve 9, a connecting rod 8 matching the strip opening 27 is fixedly connected to the outer wall of the movable column 29, a strip slide groove 34 is opened on the inner wall of the box body 1, and one end of the connecting rod 8 extends into the strip slide groove 34, a circular hole 37 is opened on the top surface of the box body 1, and the top of the traction rope 12 movably passes through the circular hole 37 to extend into the constant temperature box 2 and is fixedly connected to the connecting rod 8.

[0020] In the present invention, the top and bottom of the circular hole 37 are wide-mouthed, which is conducive to the annular sealing gasket 36 passing through the circular hole 37. A plurality of annular sealing gaskets 36 matching the circular hole 37 are evenly arranged on the outer wall of the traction rope 12, and the annular sealing gasket 36 is made of flexible rubber material, so that the annular sealing gasket 36 can be deformed and pass through the circular hole 37. At the same time, the annular sealing gasket 36 can automatically recover after deformation, so as to facilitate the sealing of the circular hole 37, avoid the heat in the thermostat 2 from leaking from the circular hole 37, avoid the temperature imbalance in the thermostat 2, thereby improving the accuracy of the heat dissipation performance detection of the capacitor housing; at the same time, it also avoids the contact between the traction rope 12 and the circular hole 37, thereby avoiding the damage of the traction rope 12 due to friction, and further facilitating the protection of the traction rope 12.

[0021] Working principle: When the present invention is used, the capacitor housing is first placed in the middle of the movable plate 5, and the heater 14 is located in the capacitor housing; then, the electric push rod 31 is opened (the initial end of the movable end of the electric push rod 31 is point A, the position of the movable end of the electric push rod 31 when the connecting plate 21 moves to the other end of the rectangular opening 23 is point B, the position of the movable end of the electric push rod 31 when the temperature sensor 26 just contacts the capacitor housing is point C, and the position of the movable end of the electric push rod 31 when the conductive plate 1 15 and the conductive plate 2 16 contact is point D), and the rectangular frame 18 is driven to move by the extension of the movable end of the electric push rod 31; and the movement of the rectangular frame 18 is divided into two processes: Process 1: When the movable end of the electric push rod 31 is controlled to move from point A to point B, at this time, under the action of the extrusion spring 20, the movable block 19 moves synchronously with the rectangular frame 18, thereby driving the connecting frame 1 22 to move, thereby driving the connecting plate 21 to move, and further driving the bottom plate 7 and the box cover 3 to move, and the capacitor housing is driven to move into the constant temperature box 2 through the movement of the box cover 3; When the movable end of the electric push rod 31 moves to point B, the capacitor housing moves to below the temperature sensor 26 and the cover 3 is closed with the thermostatic box 2. At the same time, the bottom plate 7 is in contact with the pressure sensor 35. At this time, the pressure sensor 35 receives the signal and transmits the signal to the processor in the control device 4. The processor processes the signal and controls the thermostatic box 2 to open through the controller, so that the temperature in the thermostatic box 2 rises to a preset value and provides a detection environment for the capacitor housing. At the same time, when the movable end of the electric push rod 31 moves to point B, the bar-shaped toothed plate 17 is meshed with the gear 11; Process 2: When the movable end of the electric push rod 31 is controlled to move from point B to point C, the bar-shaped toothed plate 17 moves with the rectangular frame 18, thereby driving the gear 11 to rotate, thereby driving the connecting shaft 10 to rotate, and further driving the winch wheel 24 to rotate, so as to achieve the winding of the traction rope 12, thereby driving the connecting rod 8 to move downward, and further driving the movable column 29 to move downward; When the movable end of the electric push rod 31 moves to point C, the temperature sensor 26 contacts the capacitor housing. At this time, the temperature sensor 26 detects the temperature of the surface of the capacitor housing, and then transmits the signal to the processor in the control device 4. The temperature of the surface of the capacitor housing at this time is displayed on the display through processing by the processor, which is recorded as: R1; Then, the movable end of the electric push rod 31 is controlled to move from point C to point D. At this time, the bar-shaped tooth plate 17 continues to move, thereby causing the movable column 29 to continue to move downward, thereby causing the temperature sensor 26 to continue to move downward, thereby causing the movable plate 5 to move downward, and the movable plate 5 moves downward to drive the conductive plate 1 15 to move downward, thereby causing the conductive plate 1 15 to contact the conductive plate 2 16, thereby causing the heater 14 to be powered on and generate heat in the capacitor housing through the heater 14; At this time, the temperature sensor 26 continuously transmits the detected temperature to the processor in the control device 4, and the temperature on the display continues to rise through the processing of the processor. When the temperature remains unchanged, the temperature at this time is recorded as R2; Then, by comparing the temperature between R1 and R2, the heat dissipation performance of the capacitor housing can be determined, specifically: When the value of R2 is greater than the value of R1, the heat dissipation performance of the capacitor housing is better; When the value of R2 is equal to the value of R1, the heat dissipation performance of the capacitor casing is poor; When the value of R2 is smaller than the value of R1, the heat dissipation performance of the capacitor casing is poor; Finally, when the heat dissipation performance of the capacitor housing is tested, the movable end of the electric push rod 31 is controlled to contract, thereby driving the rectangular frame 18 to reset, and then the movable column 29 is reset under the action of the tension spring 28, and then the conductive plate 15 and the conductive plate 2 16 are separated under the action of the reset spring 13, and then the heater 14 is powered off; then, the temperature sensor 26 is reset; finally, the box cover 3 is reset, and the capacitor housing is moved out of the constant temperature box 2, so that the capacitor housing is easy to take out.

[0022] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for detecting heat dissipation performance of a capacitor housing, comprising a housing (1) and a pressure sensor (35) arranged on the inner wall of the housing (1), characterized in that: Also includes: Constant temperature box (2): the constant temperature box (2) is mounted on the top surface of the box body (1), a sleeve (9) is provided on the inner top surface of the constant temperature box (2), a movable column (29) is elastically provided in the sleeve (9), a mounting plate (25) is provided at the bottom of the movable column (29), and a temperature sensor (26) is provided at the bottom of the mounting plate (25); Connecting shaft (10): the connecting shaft (10) is rotatably arranged in the housing (1), and a gear (11) and a driving member for driving the movable column (29) are provided on the outer wall of the connecting shaft (10); Rectangular opening (23): the rectangular opening (23) is opened on the top surface of the box body (1), a connecting plate (21) is slidably provided in the rectangular opening (23), a box cover (3) matching with the constant temperature box (2) is provided on the top surface of the connecting plate (21), and a connecting frame (22) is provided on the bottom surface, and a heating component for heating the capacitor housing is provided on the box cover (3); Support plate (33): the support plate (33) is fixedly connected to the inner top surface of the box body (1), an electric push rod (31) is provided on the support plate (33), and a driving mechanism for driving the connecting frame (22) and the gear (11) is provided at the movable end of the electric push rod (31).

2. A capacitor housing heat dissipation performance detection device according to claim 1, characterized in that: The driving mechanism comprises a second connecting frame (30) arranged at the movable end of the electric push rod (31), a rectangular frame (18) arranged on the second connecting frame (30), a movable block (19) slidably arranged in the rectangular frame (18), and a compression spring (20), wherein the movable block (19) is fixedly connected to the first connecting frame (22), and a bar-shaped tooth plate (17) matching with the gear (11) is provided on the side surface of the rectangular frame (18) through the third connecting frame (32).

3. A capacitor housing heat dissipation performance detection device according to claim 2, characterized in that: The heating assembly comprises a bottom plate (7) arranged on the bottom surface of the box cover (3), a movable plate (5) slidably arranged on the side of the box cover (3), and a heater (14) arranged on the top surface of the movable plate (5); a plurality of return springs (13) are arranged between the movable plate (5) and the bottom plate (7); a conductive plate 1 (15) is arranged on the bottom surface of the movable plate (5); and a conductive plate 2 (16) matching the conductive plate 1 (15) is arranged on the top surface of the bottom plate (7).

4. A capacitor housing heat dissipation performance detection device according to claim 3, characterized in that: The conductive plate 1 (15) is electrically connected to the heater (14) via a wire, and the conductive plate 2 (16) is electrically connected to an external power source.

5. A capacitor housing heat dissipation performance detection device according to claim 4, characterized in that: A control device (4) is provided on the front end surface of the box body (1), and the control device (4) includes a processor, a controller and a display. The processor and the pressure sensor (35) and the temperature sensor (26) are electrically connected via wires, and the controller and the thermostatic box (2) and the display are electrically connected via wires.

6. A capacitor housing heat dissipation performance detection device according to claim 5, characterized in that: The driving member comprises a winch wheel (24) arranged on the outer walls of both ends of the connecting shaft (10) and a traction rope (12) wound inside the winch wheel (24); a strip opening (27) is symmetrically provided on the outer wall of the sleeve (9); a connecting rod (8) matching the strip opening (27) is fixedly connected to the outer wall of the movable column (29); a strip slide groove (34) is provided on the inner wall of the box body (1), and one end of the connecting rod (8) extends into the strip slide groove (34); a circular hole (37) is provided on the top surface of the box body (1); the top of the traction rope (12) movably passes through the circular hole (37) to extend into the constant temperature box (2) and is fixedly connected to the connecting rod (8).

7. A capacitor housing heat dissipation performance detection device according to claim 6, characterized in that: The top and bottom of the circular hole (37) are both wide-mouthed, and a plurality of annular sealing pads (36) matching the circular hole (37) are evenly arranged on the outer wall of the traction rope (12).

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