An explosion-proof capacitor

Abstract

This utility model provides an explosion-proof capacitor, belonging to the field of capacitors. It solves the problem of high maintenance costs caused by the need for complete replacement of existing explosion-proof capacitors after shell damage. This utility model includes a core, a shell, and a mounting cover. The core is bolted to the mounting cover, which is mounted on the top of the shell. The shell contains a pressure regulating chamber with a pressure relief hole. A valve is installed in the pressure relief hole, and the valve has a gas passage. The valve is connected to a partition, and the partition is connected to a sealing cover. The sealing cover is installed on the outside of the core and fixed between the mounting cover and the partition. Buffer plates are provided on both sides of the valve, and pressure springs are installed between the buffer plates and the shell. The advantages of this utility model are: the sealing cover and partitions divide the internal space of the shell into a pressure regulating chamber and a core. After the capacitor releases a large amount of gas, the sealing cover expands to reduce the gas pressure at the core, while simultaneously compressing the volume of the pressure regulating chamber. Once the gas pressure in the pressure regulating chamber reaches the required level, the valve opens to release the pressure, facilitating reuse.

Description

Technical Field

[0001] This utility model belongs to the field of capacitors, and relates to a capacitor, and more particularly to an explosion-proof capacitor. Background Technology

[0002] A capacitor, often simply referred to as capacitance for its ability to store electrical charge, is denoted by the letter C. Capacitors are among the most widely used electronic components in electronic devices, extensively applied in circuits for DC blocking and AC passing, coupling, bypassing, filtering, tuning circuits, energy conversion, and control.

[0003] Existing circuits are complex, and capacitors installed on them may explode. Existing capacitors are equipped with explosion-proof structures, but after the explosion-proof structures are used, the capacitor shell will suffer irreversible damage, requiring the entire capacitor to be replaced, resulting in high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a reusable explosion-proof capacitor.

[0005] This utility model can be achieved through the following technical solution: an explosion-proof capacitor, including a core, a shell, and a mounting cover, wherein the core is mounted on the mounting cover by bolts, the mounting cover is mounted on the top of the shell, a pressure regulating chamber is provided inside the shell, a pressure relief hole is provided on the pressure regulating chamber, a valve is installed in the pressure relief hole, an air passage is provided on the valve, a partition is connected to the valve, a sealing cover is connected to the partition, and the sealing cover is installed on the outside of the core and fixed between the mounting cover and the partition.

[0006] In the aforementioned explosion-proof capacitor, the sealing cover is made of rubber, the sealing cover has a folded layer, the folded layer has a reinforcing ring, and the reinforcing rings have a tension band between them.

[0007] In the aforementioned explosion-proof capacitor, a slider is provided on the reinforcing ring, and a groove is provided inside the housing.

[0008] In the aforementioned explosion-proof capacitor, a fixing block extends from the mounting cover, a fixing groove is provided on the housing, and two bolts pass through the fixing block and the fixing groove.

[0009] In the aforementioned explosion-proof capacitor, the valve is provided with a first connecting rod, the partition is provided with a second connecting rod, a buffer pad is provided inside the first connecting rod, and a return spring is provided between the buffer pad and the second connecting rod.

[0010] In the aforementioned explosion-proof capacitor, the valve extends with a buffer plate, and a pressure spring is provided between the buffer plate and the pressure regulating chamber.

[0011] In the aforementioned explosion-proof capacitor, the valve is provided with a sealing cone, a sealing sleeve is installed outside the sealing cone, and a sealing protrusion extends from the sealing sleeve.

[0012] Compared with the prior art, the advantages of this utility model are as follows: a pressure regulating chamber is provided in the shell, and the partition is pushed by the change of the sealing cover covering the core, which in turn pushes the valve to overcome the pressure spring and move, and pushes the valve out of the pressure relief hole to release pressure. After the installation cover is removed, the core and sealing cover can be replaced, and the partition and valve are reset under the action of the spring, which is convenient for reuse. Attached Figure Description

[0013] Figure 1 This is a 3D diagram of an explosion-proof capacitor;

[0014] Figure 2 This is the first cross-sectional view of an explosion-proof capacitor;

[0015] Figure 3 This is the second cross-sectional view of the explosion-proof capacitor;

[0016] Figure 4 This is a 3D view of the sealing cover of an explosion-proof capacitor;

[0017] The components are as follows: 1. Core; 2. Shell; 21. Pressure regulating chamber; 211. Pressure relief hole; 22. Partition plate; 221. Connecting rod II; 23. Slide groove; 24. Fixing groove; 3. Mounting cover; 31. Fixing block; 4. Bolt I; 5. Valve; 51. Air passage; 52. Connecting rod I; 521. Buffer pad; 522. Return spring; 53. Buffer plate; 531. Pressure spring; 54. Sealing cone; 6. Sealing cover; 61. Folded layer; 62. Reinforcing ring; 621. Slider; 63. Tension band; 7. Bolt II; 8. Sealing sleeve; 81. Sealing convex ring. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 4 As shown, this utility model can be implemented through the following embodiments: An explosion-proof capacitor includes a core 1, a housing 2, and a mounting cover 3. The core 1 is mounted on the mounting cover 3 by bolts 4. The mounting cover 3 is mounted on the top of the housing 2. A pressure regulating chamber 21 is provided inside the housing 2. A pressure relief hole 211 is provided on the pressure regulating chamber 21. A valve 5 is installed in the pressure relief hole 211. An air passage 51 is provided on the valve 5. The valve 5 is connected to a partition 22. A sealing cover 6 is connected to the partition 22. The sealing cover 6 is installed on the outside of the core 1 and fixed between the mounting cover 3 and the partition 22.

[0020] The cooperation between the pressure regulating chamber 21 and the pressure relief hole 211 allows the air in the pressure regulating chamber 21 to be discharged, thereby regulating the air pressure inside the housing 2. The valve 5 is designed to provide a pressure relief threshold to prevent the explosion-proof function from being activated due to temperature changes in the air pressure inside the housing 2. The opening of the air passage 51 allows the valve 5 to connect the pressure regulating chamber 21 to the outside air. The partition 22 is used to separate the pressure regulating chamber 21 from the space inside the housing 2. The sealing cover 6 is used to isolate the core 1 and the housing 2 to prevent the leakage of gas generated by the aging of the core 1, and controls the movement of the partition 22 through its connection with the partition 22.

[0021] like Figures 2 to 4 As shown, the sealing cover 6 is made of rubber and has a folded layer 61. Reinforcing rings 62 are provided on the folded layer 61, and tension bands 63 are provided between the reinforcing rings 62. The folded layer 61 allows the sealing cover 6 to change volume, increasing the internal space and reducing the gas pressure when the core 1 releases gas. Simultaneously, the elastic rubber material effectively prevents the sealing cover 6 from being bursting from the inside. The reinforcing rings 62 increase the strength of the folded layer 61, and the tension bands 63 strengthen the sealing cover 6, preventing the valve 5 from opening due to rapid pushing of the released gas.

[0022] like Figures 2 to 4 As shown, a slider 621 is provided on the reinforcing ring 62, and a groove 23 is provided inside the housing 2. The slider 621 and the groove 23 cooperate to guide the reinforcing ring 62 to prevent it from twisting and pulling when the gas is released, which would damage the tension band 63, and guide the unfolding direction of the sealing cover 6.

[0023] like Figure 1 and Figure 3 As shown, a fixing block 31 extends from the mounting cover 3, and a fixing groove 24 is provided on the housing 2. A bolt 7 passes through the fixing block 31 and the fixing groove 24. The fixing block 31 and the fixing groove 24 are provided to fix the mounting cover 3 and the housing 2 together, thereby fixing the core 1 to the housing 2, so that the core 1 is in a fixed position inside the housing 2.

[0024] like Figure 2 and Figure 3 As shown, valve 5 is equipped with a first connecting rod 52, and partition 22 is equipped with a second connecting rod 221. A buffer pad 521 is installed inside the first connecting rod 52, and a return spring 522 is installed between the buffer pad 521 and the second connecting rod 221. The first connecting rod 52 and the second connecting rod 221 work together to drive the thrust on partition 22 to valve 5. The buffer pad 521 and the return spring 522 are used to prevent the first connecting rod 52 and the second connecting rod 221 from being damaged due to excessive thrust. The return spring 522 is also used to reset partition 22 for easy reuse.

[0025] like Figure 2As shown, valve 5 extends with a buffer plate 53, and a pressure spring 531 is provided between the buffer plate 53 and the pressure regulating chamber 21. The buffer plate 53 is used to cooperate with the pressure spring 531 to determine the air pressure threshold for opening valve 5, and at the same time reset valve 5 for easy reuse.

[0026] like Figure 2 and Figure 3 As shown, valve 5 is provided with a sealing cone 54, and a sealing sleeve 8 is installed outside the sealing cone 54. A sealing protrusion 81 extends from the sealing sleeve 8. The sealing cone 54 is used to limit the inward displacement of valve 5 and prevent valve 5 from going too deep into housing 2 due to pressure spring 531. At the same time, the pressure spring 531 and the sealing sleeve 8 help to close the pressure relief hole 211. The sealing protrusion 81 is used to add a bend at the pressure relief hole 211 and the sealing cone 54 to improve the sealing performance.

[0027] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0028] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. An explosion-proof capacitor, comprising a core (1), a housing (2), and a mounting cover (3), wherein the core (1) is mounted on the mounting cover (3) by bolts (4), and the mounting cover (3) is mounted on the top of the housing (2), characterized in that: The housing (2) is provided with a pressure regulating chamber (21), and a pressure relief hole (211) is provided on the pressure regulating chamber (211). A valve (5) is installed in the pressure relief hole (211). An air passage (51) is provided on the valve (5). The valve (5) is connected to a partition (22). A sealing cover (6) is connected to the partition (22). The sealing cover (6) is installed on the outside of the core (1) and fixed between the mounting cover (3) and the partition (22).

2. The explosion-proof capacitor according to claim 1, characterized in that, The sealing cover (6) is made of rubber and has a folded layer (61). A reinforcing ring (62) is provided on the folded layer (61), and a tension band (63) is provided between the reinforcing rings (62).

3. The explosion-proof capacitor according to claim 2, characterized in that, The reinforcing ring (62) is provided with a slider (621), and the housing (2) is provided with a groove (23).

4. The explosion-proof capacitor according to claim 1, characterized in that, A fixing block (31) extends from the mounting cover (3), and a fixing groove (24) is provided on the housing (2). A bolt (7) passes through the fixing block (31) and the fixing groove (24).

5. The explosion-proof capacitor according to claim 1, characterized in that, The valve (5) is provided with a connecting rod one (52), the partition (22) is provided with a connecting rod two (221), a buffer pad (521) is provided inside the connecting rod one (52), and a return spring (522) is installed between the buffer pad (521) and the connecting rod one (52).

6. The explosion-proof capacitor according to claim 1, characterized in that, The valve (5) extends with a buffer plate (53), and a pressure spring (531) is provided between the buffer plate (53) and the pressure regulating chamber (21).

7. The explosion-proof capacitor according to claim 1, characterized in that, The valve (5) is provided with a sealing cone (54), and a sealing sleeve (8) is installed outside the sealing cone (54). A sealing protrusion (81) extends from the sealing sleeve (8).

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