Low-voltage parallel capacitor

Abstract

The utility model discloses a low-voltage parallel capacitor, which comprises a capacitor body, a high-speed fan and a rotary drum grid, a top cover is fixedly mounted on the top surface of the capacitor body, the rotary drum grid is rotatably mounted on the inner side of the top cover, and one end of the rotary drum grid is fixedly connected with the output end of the high-speed fan. The high-speed fan comprises an air duct, a motor, a first turbofan and a second turbofan, wherein the first turbofan and the second turbofan are rotationally installed on the inner side of the air duct. The motor is fixed to one end of the air duct, and the output end of the motor is fixedly connected with the second turbofan, the first turbofan and the rotary drum grid in sequence. According to the utility model, a novel wide air duct structure is arranged, a wide air curtain structure is formed through rotation of the rotary drum grid, two sides of the capacitor main body are covered, an isolation barrier is formed, airflow on the surface of the capacitor main body is driven to move, and external dust is isolated from being adsorbed by an electric field on the surface of the capacitor main body in a suction mode; and the protection performance of the capacitor main body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a low-voltage parallel capacitor. Background Art

[0002] Low-voltage shunt capacitors are a common electronic component used to store electrical energy and provide capacitance. In a circuit, multiple low-voltage capacitors can be used in parallel to increase the total capacitance. These capacitors are commonly used in low-voltage circuits, such as power filtering, DC coupling, and signal coupling. In high-power or high-frequency applications, low-voltage shunt capacitors will generate a lot of heat, causing the inner film of the capacitor to age at high temperatures and reduce its service life. For low-voltage shunt capacitors with high power or working in high-temperature environments, fans can be used to enhance the heat dissipation effect. Fans can accelerate heat transfer by forced air convection and discharge hot air out of the system. Airflow movement and the adsorption force of the electric field on the surface of the capacitor cause serious dust accumulation on the surface and inside of the capacitor. The low air volume has a weaker ability to remove dust. In view of this, the existing problems are studied and improved, and a low-voltage shunt capacitor is provided to solve the current problems. The purpose is to achieve the purpose of solving problems and improving practical value through this technology. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted by the utility model is: a low-voltage parallel capacitor, comprising: a capacitor body, a high-speed fan and a rotary drum grid, the top surface of the capacitor body is fixedly installed with a top cover shell, the rotary drum grid is rotatably installed on the inner side of the top cover shell and one end is fixedly connected to the output end of the high-speed fan, the high-speed fan comprises a wind tube, a motor and a first turbofan and a second turbofan rotatably installed on the inner side of the wind tube, the motor is fixed to one end of the wind tube and the output end is fixedly connected to the second turbofan, the first turbofan and the rotary drum grid in sequence, and an exhaust pipe is opened on the surface of the wind tube.

[0005] In a preferred example, the utility model can be further configured as follows: an air intake gap is provided between the two sides of the top cover shell and the capacitor body, and the air intake gap is linearly extended along the width direction of the capacitor body.

[0006] In a preferred example, the utility model can be further configured as follows: the rotating drum grille is used for introducing airflow and one end of the rotating drum grille is connected to the inner cavity of the wind tube, and the diameter of the rotating drum grille is equal to the diameter of the first turbofan.

[0007] In a preferred example, the utility model can be further configured as follows: the rotating drum grille includes an axle seat and a plurality of guide rings and grille bars located between adjacent guide rings, the axle seat and the guide rings; a main shaft rod is fixedly mounted on the surface of the axle seat; and the grille bars are evenly distributed in a circumferential direction between adjacent guide rings and between the axle seat and the guide rings.

[0008] In a preferred example, the utility model can be further configured as follows: the guide ring has the same diameter as the shaft seat, and the guide ring is ring-shaped, and a plurality of rotary blades for lateral airflow transport are disposed on the inner side of the guide ring.

[0009] In a preferred example, the utility model can be further configured as follows: an inner guide cylinder is fixedly installed on the inner side of the wind cylinder, and a spacing is provided between the outer wall of the inner guide cylinder and the inner side of the wind cylinder, and the spacing is equal to the blade width of the first turbofan and the second turbofan.

[0010] The beneficial effects achieved by the utility model are:

[0011] 1. In the utility model, a new wide air duct structure is provided, and a wide air curtain structure is formed by rotating the drum grid to cover both sides of the capacitor body, forming an isolation barrier, driving the air flow on the surface of the capacitor body and using suction to isolate the external dust from the electric field adsorption on the surface of the capacitor body, thereby improving the protection performance of the capacitor body.

[0012] 2. In the utility model, driven by the motor, a stronger wind is formed inside the wind tube through the first turbofan and the second turbofan, and the airflow is evenly introduced by the rotating drum grid. The adsorption airflow has a strong power and can effectively carry out the dust cleaning operation of the electric field adsorbing the dust on the surface of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the surface structure of the top cover shell of an embodiment of the utility model;

[0015] Figure 3 A schematic diagram of the cross-sectional structure of a high-speed fan according to an embodiment of the utility model;

[0016] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a rotary drum grille according to an embodiment of the utility model.

[0017] Reference numerals:

[0018] 100, capacitor body; 110, top cover shell;

[0019] 200, high-speed fan; 210, air cylinder; 220, motor; 230, first turbofan; 240, second turbofan; 211, exhaust pipe; 212, inner guide cylinder;

[0020] 300, drum grille; 310, shaft seat; 320, guide ring; 330, grille bar; 340, main shaft rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] A low-voltage parallel capacitor provided by some embodiments of the utility model is described below in conjunction with the accompanying drawings.

[0023] Combination Figure 1-4 As shown, the utility model provides a low-voltage parallel capacitor, comprising: a capacitor body 100, a high-speed fan 200 and a drum grille 300, a top cover shell 110 is fixedly installed on the top surface of the capacitor body 100, the drum grille 300 is rotatably installed on the inner side of the top cover shell 110 and one end is fixedly connected to the output end of the high-speed fan 200, the high-speed fan 200 comprises a wind tube 210, a motor 220 and a first turbofan 230 and a second turbofan 240 rotatably installed on the inner side of the wind tube 210, the motor 220 is fixed to one end of the wind tube 210 and the output end is fixedly connected to the second turbofan 240, the first turbofan 230 and the drum grille 300 in sequence, and an exhaust pipe 211 is opened on the surface of the wind tube 210.

[0024] In this embodiment, an air intake gap is provided between the two sides of the top cover 110 and the capacitor body 100 , and the air intake gap is linearly extended along the width direction of the capacitor body 100 .

[0025] Specifically, the air intake gap forms an air curtain structure on the surface of the capacitor body 100 , covering the surface of the capacitor body 100 .

[0026] In this embodiment, the rotating drum grille 300 is used to introduce airflow and one end of the rotating drum grille 300 is connected to the inner cavity of the wind cylinder 210 . The diameter of the rotating drum grille 300 is equal to the diameter of the first turbofan 230 .

[0027] In this embodiment, the drum grille 300 includes a shaft seat 310 and a plurality of guide rings 320 and grille bars 330 located between adjacent guide rings 320, the shaft seat 310 and the guide rings 320. A main shaft rod 340 is fixedly mounted on the surface of the shaft seat 310, and the grille bars 330 are evenly distributed in a circumferential direction between adjacent guide rings 320 and between the shaft seat 310 and the guide rings 320.

[0028] Specifically, the rotating grille bars 330 evenly distribute the intake air laterally, so that the negative pressure of the high-speed fan 200 is dispersed laterally inside the rotating drum grille 300, and the air is taken in through the surface of the rotating drum grille 300 to form a uniform wind curtain structure.

[0029] Furthermore, the guide ring 320 has the same diameter as the shaft seat 310 , and the guide ring 320 is ring-shaped. A plurality of rotary blades for lateral airflow transport are disposed on the inner side of the guide ring 320 .

[0030] In this embodiment, an inner guide cylinder 212 is fixedly installed on the inner side of the wind cylinder 210 , and a distance is set between the outer wall of the inner guide cylinder 212 and the inner side of the wind cylinder 210 , and the distance is equal to the blade width of the first turbofan 230 and the second turbofan 240 .

[0031] Specifically, the airflow is guided by the inner guide tube 212 and the wind tube 210 to ensure stable delivery of the airflow.

[0032] The working principle and use process of this utility model:

[0033] During use of the capacitor, when the capacitor is in a high-frequency or high-power working state or in a dust cleaning operation, the high-speed fan 200 is automatically controlled by the capacitor control end to work, and the guide ring 320, the second turbofan 240 and the drum grille 300 are driven by the motor 220 to rotate synchronously. The airflow is introduced through one end of the wind tube 210 and moves at high speed along the outer periphery of the inner guide tube 212 to be guided out of the capacitor body 100 through the exhaust pipe 211. The airflow is mainly introduced through the rotating drum grille 300, and a wide wind curtain is formed at the bottom ends of both sides of the top cover shell 110 to wrap around both sides of the capacitor body 100, so as to exchange heat and dissipate the high temperature on the surface of the capacitor body 100, and isolate the dust from adhering to the surface of the capacitor body 100, and has a good dust cleaning effect on the dust that has been adsorbed by the electric field.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low voltage shunt capacitor, characterized in that: include: A capacitor body (100), a high-speed fan (200) and a rotary drum grille (300), wherein a top cover shell (110) is fixedly mounted on the top surface of the capacitor body (100), the rotary drum grille (300) is rotatably mounted on the inner side of the top cover shell (110) and one end of the rotary drum grille is fixedly connected to the output end of the high-speed fan (200), the high-speed fan (200) comprises a wind tube (210), a motor (220), and a first turbofan (230) and a second turbofan (240) rotatably mounted on the inner side of the wind tube (210), the motor (220) is fixed to one end of the wind tube (210) and the output end is fixedly connected to the second turbofan (240), the first turbofan (230) and the rotary drum grille (300) in sequence, and an exhaust pipe (211) is provided on the surface of the wind tube (210).

2. A low voltage shunt capacitor according to claim 1, characterized in that: An air intake gap is provided between the two sides of the top cover shell (110) and the capacitor body (100), and the air intake gap is linearly extended along the width direction of the capacitor body (100).

3. A low voltage shunt capacitor according to claim 1, characterized in that: The rotating drum grille (300) is used for introducing airflow and one end of the rotating drum grille (300) is connected to the inner cavity of the wind tube (210). The diameter of the rotating drum grille (300) is equal to the diameter of the first turbofan (230).

4. A low voltage shunt capacitor according to claim 1, characterized in that: The rotary drum grille (300) comprises an axle seat (310), a plurality of guide rings (320), and grille bars (330) located between adjacent guide rings (320), the axle seat (310), and the guide rings (320); a main shaft rod (340) is fixedly mounted on the surface of the axle seat (310); and the grille bars (330) are evenly distributed in a circumferential direction between adjacent guide rings (320) and between the axle seat (310) and the guide rings (320).

5. A low voltage shunt capacitor according to claim 4, characterized in that: The guide ring (320) has the same diameter as the shaft seat (310), and the guide ring (320) is ring-shaped. A plurality of rotary blades for transverse airflow transport are arranged on the inner side of the guide ring (320).

6. A low voltage shunt capacitor according to claim 1, characterized in that: An inner guide cylinder (212) is fixedly mounted on the inner side of the wind cylinder (210), and a spacing is provided between the outer wall of the inner guide cylinder (212) and the inner side of the wind cylinder (210), and the spacing is equal to the blade width of the first turbofan (230) and the second turbofan (240).

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