Capacitor internal environment control system and control method for improving capacitor life

Abstract

The present invention belongs to the technical field of capacitors, and in particular relates to a capacitor internal environment control system and control method for improving the life of capacitors. The control system includes a capacitor, an elastic plate, a heat exchange tube, and a conveying mechanism for conveying a heat exchange medium. The elastic plate is disposed within the capacitor; the heat exchange tube is fixed to the elastic plate and has an inlet and an outlet. The conveying mechanism includes a conveying tube, the inlet of the heat exchange tube extends into the conveying tube, and the conveying tube and the heat exchange tube are respectively provided with a first sensing area and a second sensing area. The capacitor internal environment control system of the present invention can automatically adjust the internal temperature of the capacitor, prevent the internal temperature of the capacitor from being too high, avoid the problem of capacitor explosion caused by excessive internal temperature of the capacitor, and improve the service life of the capacitor. The provision of the air guide tube, in conjunction with the elastic plate, plays a role in automatically regulating the internal air pressure of the capacitor, avoiding the problem of capacitor explosion caused by excessive internal air pressure, and further improving the service life of the capacitor.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitors, and in particular relates to a capacitor internal environment control system and a control method for improving the life of the capacitor. Background Art

[0002] Capacitors are commonly used electronic components in electronic circuits.

[0003] Capacitors have a large capacitance in circuits. In actual use, if overloaded, they are prone to expansion or even explosion. In actual use, if a capacitor explodes, it will cause collateral damage to other nearby electronic components. Therefore, the design of capacitors needs to take explosion-proof performance into consideration.

[0004] The current explosion-proof design of explosion-proof capacitors mainly sets an explosion-proof wire inside the capacitor. When the capacitor is overloaded, the explosion-proof wire can be disconnected, and the capacitor will not explode after the power is turned off. However, in actual applications, the explosion-proof performance of this type of capacitor is poor. The defect of the explosion-proof wire disconnecting after the capacitor explodes often occurs. Moreover, after the explosion-proof wire is disconnected, it needs to be replaced before it can be used again. Summary of the Invention

[0005] The present invention addresses the problems existing in capacitors in the prior art and proposes the following technical solutions:

[0006] A capacitor internal environment control system for improving the life of the capacitor includes a capacitor, an elastic plate, a heat exchange tube, and a conveying mechanism for conveying a heat exchange medium, wherein the capacitor has an upper end cover;

[0007] The elastic plate is a downwardly concave arc-shaped spherical segment curved surface, the elastic plate is arranged in the capacitor, and the upper end of the elastic plate is sealed and fixed on the inner wall of the upper end cover;

[0008] The heat exchange tube is fixed on the elastic plate, and the elastic plate deforms up and down to drive the heat exchange tube to move up and down. The heat exchange tube has an inlet and an outlet, and the inlet and outlet of the heat exchange tube both extend to the outside of the capacitor;

[0009] The conveying mechanism includes a conveying pipe, the inlet of the heat exchange pipe extends into the conveying pipe, and the heat exchange pipe can move up and down in the conveying pipe. The conveying pipe and the heat exchange pipe are respectively provided with a first induction area and a second induction area, and the first induction area is located directly above the second induction area. When the heat exchange pipe moves upward so that the first induction area and the second induction area are highly overlapped, the first induction area and the second induction area sense each other, so that the conveying mechanism is started and the heat exchange medium is conveyed into the heat exchange pipe.

[0010] The capacitor internal environment control system of the present invention can automatically adjust the internal temperature of the capacitor to prevent the internal temperature of the capacitor from being too high, avoid the capacitor explosion problem caused by the excessive internal temperature of the capacitor, and increase the service life of the capacitor.

[0011] As an improvement to the above technical solution, in the capacitor internal environment control system for improving the life of the capacitor, an air duct is provided on the elastic plate, the two ends of the air duct are connected, the air duct is fixedly connected to the lower end of the elastic plate, the lower end of the air duct passes through the elastic plate and the heat exchange tube and is connected to the interior of the capacitor, an exhaust port is provided on the upper end cover, the exhaust port upper cover is provided with a sealing cover, and the upper end of the air duct extends into the exhaust port.

[0012] The setting of the air guide tube, in conjunction with the elastic plate, plays the role of automatically regulating the internal air pressure of the capacitor, avoiding the problem of capacitor explosion caused by excessive internal air pressure of the capacitor, and further improving the service life of the capacitor.

[0013] As an improvement of the above technical solution, in the capacitor internal environment control system for improving the life of the capacitor, the upper end of the air duct is fixedly connected to the sealing cover, and an air outlet is provided at the side of the upper end of the air duct.

[0014] As an improvement of the above technical solution, in the capacitor internal environment control system for improving the life of the capacitor, the heat exchange medium is gas or liquid.

[0015] As an improvement of the above technical solution, in the capacitor internal environment control system for improving the life of the capacitor, when the heat exchange medium is gas, the outlet of the heat exchange tube is connected to the external atmosphere and the heat exchange medium is discharged.

[0016] As an improvement of the above technical solution, in the capacitor internal environment control system for improving the life of the capacitor, when the heat exchange medium is liquid, the conveying mechanism further includes a liquid return pipe connected to the outlet of the heat exchange pipe.

[0017] The control method of the capacitor internal environment control system for improving the life of the capacitor includes:

[0018] The temperature and air pressure inside the capacitor increase, squeezing the elastic plate upward and deforming it, driving the heat exchange tube to rise. When the heat exchange tube rises to the point where the first induction zone and the second induction zone overlap in height, the conveying mechanism starts to convey the conveying medium into the heat exchange tube. The heat exchange tube and the gas inside the capacitor exchange heat, the internal temperature of the capacitor decreases, and the internal temperature of the capacitor is regulated.

[0019] The above-mentioned control method also includes: the elastic plate deforms upward, driving the air duct to move upward, the upward movement of the air duct pushes open the sealing cover, and the internal gas of the capacitor is discharged from the exhaust port through the air duct, thereby realizing the internal air pressure control of the capacitor.

[0020] The beneficial effects of the present invention are:

[0021] (1) The capacitor internal environment control system of the present invention can automatically adjust the internal temperature of the capacitor to prevent the internal temperature of the capacitor from being too high, thereby avoiding the problem of capacitor explosion caused by the excessive internal temperature of the capacitor and improving the service life of the capacitor;

[0022] (2) The setting of the air guide tube, in conjunction with the elastic plate, plays the role of automatically regulating the internal air pressure of the capacitor, avoiding the problem of capacitor explosion caused by excessive internal air pressure, and further improving the service life of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG2 is a schematic structural diagram of a capacitor internal environment control system for improving the life of a capacitor as a specific embodiment of the present invention;

[0024] Figure 2 The figure shows a schematic diagram of the position of the sensing area as a specific embodiment of the present invention;

[0025] Figure 3 The figure shows a schematic diagram of the connection between the air guide tube and the sealing cover as a specific embodiment of the present invention;

[0026] Figure 4 Shown is a schematic structural diagram of the heat exchange tube outlet when the heat exchange medium is liquid as a specific embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Example

[0028] Figure 1 FIG2 is a schematic structural diagram of a capacitor internal environment control system for improving the life of a capacitor as a specific embodiment of the present invention; Figure 2 Shown is a schematic diagram of the position of the sensing area as a specific embodiment of the present invention. Figure 1-2 The capacitor internal environment control system for improving the life of the capacitor includes a capacitor 1, an elastic plate 2, a heat exchange tube 3 and a conveying mechanism 4 for conveying a heat exchange medium, wherein the capacitor 1 has an upper end cover 11;

[0029] The elastic plate 2 is a downwardly concave arc-shaped spherical segment surface. The elastic plate 2 is arranged in the capacitor 1, and the upper end of the elastic plate 2 is sealed and fixed on the inner wall of the upper end cover 11;

[0030] The heat exchange tube 3 is fixed on the elastic plate 2. The elastic plate 2 deforms up and down to drive the heat exchange tube 3 to move up and down. The heat exchange tube 3 has an inlet 31 and an outlet 32. The inlet 31 and outlet 32 ​​of the heat exchange tube 3 both extend to the outside of the capacitor 1.

[0031] The conveying mechanism 4 includes a conveying pipe 41. The inlet 31 of the heat exchange tube 3 extends into the conveying pipe 41, and the heat exchange tube 3 can move up and down in the conveying pipe 41. The conveying pipe 41 and the heat exchange tube 3 are respectively provided with a first induction area 411 and a second induction area 33. The first induction area 411 is located directly above the second induction area 33. When the heat exchange tube 3 moves upward so that the first induction area 411 and the second induction area 33 highly overlap, the first induction area 411 and the second induction area 33 sense each other, so that the conveying mechanism 4 is started and the heat exchange medium is conveyed into the heat exchange tube 3.

[0032] The above-mentioned control system can automatically adjust the internal temperature of the capacitor. The specific adjustment process is as follows: the internal temperature of the capacitor increases, the internal air pressure increases, causing the elastic plate 2 to deform upward, and the upward deformation of the elastic plate 2 drives the heat exchange tube 3 to move upward. When the elastic plate 2 deforms to a certain extent, the first induction area 411 and the second induction area 33 overlap, and mutual induction activates the conveying mechanism. The conveying mechanism 4 conveys heat exchange medium into the heat exchange tube 3. The heat exchange medium exchanges heat with the high-temperature gas in the capacitor 1, so that the internal temperature of the capacitor 1 is reduced, thereby achieving the purpose of automatically controlling the internal temperature of the capacitor 1.

[0033] The capacitor internal environment control system of the present invention can automatically adjust the internal temperature of the capacitor to prevent the internal temperature of the capacitor from being too high, avoid the capacitor explosion problem caused by the excessive internal temperature of the capacitor, and increase the service life of the capacitor.

[0034] The heat exchange tube 3 is designed as a U-shape, with its lower end positioned below the tube 3, ensuring contact area between the tube 3 and the interior of the capacitor 1 and ensuring effective heat exchange. The lowermost end of the elastic plate 2 is connected to the tube 3, ensuring that deformation of the elastic plate 2 drives the tube 3 upward. The degree of deformation of the elastic plate 2 and the height of the rise of the heat exchange tube 3 to activate the conveying mechanism 4 are determined through experiments based on the specific ring shape used and the elastic plate material. The elastic plate 2 is a metal spring, and the capacitor core lead wires pass through the elastic plate 2. The elastic plate 2 and the lead wires do not interfere with each other in vertical movement, and the lead wires and the elastic plate 2 are insulated and sealed.

[0035] As an improvement of the above technical solution, see Figure 1The elastic plate 2 is provided with an air duct 5, both ends of the air duct 5 are connected, the air duct 5 is fixedly connected to the lower end of the elastic plate 2, the lower end of the air duct 5 passes through the elastic plate 2 and the heat exchange tube 3 and is connected to the interior of the capacitor 1, the upper end cover 11 is provided with an exhaust port 111, the exhaust port 111 is covered with a sealing cover 112, and the upper end of the air duct 5 extends into the exhaust port 111.

[0036] The provision of air duct 5, in conjunction with elastic plate 2, automatically regulates the internal air pressure of capacitor 1, preventing capacitor explosion caused by excessive internal pressure, and further extending the service life of the capacitor. Specifically, the regulation process involves the release of gas inside capacitor 1 and the rise in temperature, which increases the internal air pressure of capacitor 1. This pressure squeezes elastic plate 2, causing it to deform upward. This upward deformation of elastic plate 2 drives air duct 5 upward. When air duct 5 reaches a certain position, it pushes open sealing cover 112, allowing the high-temperature gas inside capacitor 1 to be discharged through air duct 5 and exhaust port 111, thus achieving regulation of the internal air pressure of capacitor 1. The height to which the air guide tube 5 needs to rise to push open the sealing cover 112 may be greater than the height to which the heat exchange tube 3 needs to rise when the first sensing area 411 and the second sensing area 33 overlap. This allows the temperature to be controlled first. When the temperature control stops the internal air pressure of the capacitor, the elastic plate 2 will no longer continue to deform, and subsequent exhaust control is not required, thereby reducing the probability of contact between the internal environment of the capacitor and the outside. When the internal air pressure of the capacitor continues to increase under temperature control, the internal air pressure of the capacitor is controlled again to prevent the internal air pressure of the capacitor from being too high, causing the capacitor to explode.

[0037] As an improvement of the above technical solution, Figure 3 Shown is a schematic diagram of the connection between the air guide tube and the sealing cover as a specific embodiment of the present invention. Figure 3 In the embodiment, the upper end of the air guide tube 5 is fixedly connected to the sealing cover 112 , and an air outlet 51 is provided at the side of the upper end of the air guide tube 5 .

[0038] The upper end of the air guide tube 5 is fixedly connected to the sealing cover 112. After the internal air pressure of the capacitor returns to normal, the elastic plate 2 is reset, so that the air guide tube 5 can drive the sealing cover 112 to automatically reset.

[0039] As an improvement of the above technical solution, the heat exchange medium is gas or liquid.

[0040] The heat exchange medium is either gas or liquid, preferably gas. When gas is used, a fan or other air delivery device is used to deliver the external atmosphere or refrigerated gas to the heat exchange tubes for heat exchange, resulting in a simple structure. When the heat exchange medium is liquid, the heat exchange medium is stored in a liquid storage tank and delivered to the heat exchange tubes for heat exchange by a pump or other delivery device. The heat exchange medium is then recycled or recovered.

[0041] As an improvement of the above technical solution, when the heat exchange medium is gas, the outlet 32 ​​of the heat exchange tube 3 is connected to the external atmosphere, and the heat exchange medium is discharged.

[0042] As an improvement of the above technical solution, Figure 4 Shown is a schematic structural diagram of the heat exchange tube outlet when the heat exchange medium is liquid as a specific embodiment of the present invention. Figure 4 In the embodiment, when the heat exchange medium is liquid, the delivery mechanism 4 further includes a liquid return pipe 42 , and the liquid return pipe 42 is connected to the outlet 32 ​​of the heat exchange pipe 3 .

[0043] The control method of the above control system comprises:

[0044] The temperature and air pressure inside the capacitor 1 increase, squeezing the elastic plate 2 to deform upward, driving the heat exchange tube 3 to rise. When the heat exchange tube 3 rises to the point where the first induction zone 411 and the second induction zone 33 overlap in height, the conveying mechanism 4 is activated to convey the conveying medium into the heat exchange tube 3. The heat exchange tube 3 and the gas inside the capacitor 1 exchange heat, and the internal temperature of the capacitor 1 decreases. The internal temperature of the capacitor 1 is then regulated.

[0045] As an improvement to the above technical solution, the above control method also includes: the elastic plate 2 deforms upward, driving the air duct 5 to move upward, the air duct 5 moves upward to push open the sealing cover 112, and the internal gas of the capacitor 1 is discharged from the exhaust port 111 through the air duct 5, thereby realizing the internal air pressure control of the capacitor 1.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A capacitor internal environment control system for improving capacitor life, characterized by: It comprises a capacitor (1), an elastic plate (2), a heat exchange tube (3), and a conveying mechanism (4) for conveying a heat exchange medium, wherein the capacitor (1) has an upper end cover (11); The elastic plate (2) is a downwardly concave arc-shaped spherical segment curved surface, the elastic plate (2) is arranged in the capacitor (1), and the upper end of the elastic plate (2) is sealed and fixed on the inner wall of the upper end cover (11); The heat exchange tube (3) is fixed on the elastic plate (2), and the elastic plate (2) deforms up and down to drive the heat exchange tube (3) to move up and down. The heat exchange tube (3) has an inlet (31) and an outlet (32), and both the inlet (31) and the outlet (32) of the heat exchange tube (3) extend to the outside of the capacitor (1); The conveying mechanism (4) includes a conveying pipe (41), the inlet (31) of the heat exchange pipe (3) extends into the conveying pipe (41), and the heat exchange pipe (3) can move up and down in the conveying pipe (41), and the conveying pipe (41) and the heat exchange pipe (3) are respectively provided with a first induction area (411) and a second induction area (33), and the first induction area (411) is located just above the second induction area (33). When the heat exchange pipe (3) moves upward so that the first induction area (411) and the second induction area (33) highly overlap, the first induction area (411) and the second induction area (33) sense each other, so that the conveying mechanism (4) is started, and the heat exchange medium is conveyed into the heat exchange pipe (3); An air guide tube (5) is provided on the elastic plate (2), both ends of the air guide tube (5) are connected, the air guide tube (5) and the lower end of the elastic plate (2) are fixedly connected, the lower end of the air guide tube (5) passes through the elastic plate (2) and the heat exchange tube (3) and is connected to the interior of the capacitor (1), an exhaust port (111) is provided on the upper end cover (11), a sealing cover (112) is provided on the upper cover of the exhaust port (111), and the upper end of the air guide tube (5) extends into the exhaust port (111); The upper end of the air guide tube (5) is fixedly connected to the sealing cover (112), and an air outlet (51) is provided at the side of the upper end of the air guide tube (5).

2. The capacitor internal environment control system for improving capacitor life according to claim 1, characterized in that: The heat exchange medium is gas or liquid.

3. The capacitor internal environment control system for improving capacitor life according to claim 1, characterized in that: When the heat exchange medium is gas, the outlet (32) of the heat exchange tube (3) is connected to the external atmosphere, and the heat exchange medium is exhausted.

4. The capacitor internal environment control system for improving capacitor life according to claim 1, characterized in that: When the heat exchange medium is liquid, the delivery mechanism (4) further comprises a liquid return pipe (42), and the liquid return pipe (42) is connected to the outlet (32) of the heat exchange pipe (3).

5. A method for controlling a capacitor internal environment control system for improving capacitor life according to claim 1, comprising: The temperature and pressure inside the capacitor (1) rise, squeezing the elastic plate (2) to deform upward, driving the heat exchange tube (3) to rise. When the heat exchange tube (3) rises to the point where the first induction zone (411) and the second induction zone (33) overlap in height, the conveying mechanism (4) is activated to convey the conveying medium into the heat exchange tube (3). The heat exchange tube (3) and the gas inside the capacitor (1) exchange heat, the temperature inside the capacitor (1) decreases, and the temperature inside the capacitor (1) is regulated.

6. The control method according to claim 5, characterized in that: The elastic plate (2) deforms upward, driving the air guide tube (5) to move upward. The upward movement of the air guide tube (5) pushes open the sealing cover (112), and the internal gas of the capacitor (1) is discharged from the exhaust port (111) through the air guide tube (5), thereby achieving internal gas pressure control of the capacitor (1).

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