A dustproof device for air ducts

Abstract

This utility model discloses a dustproof device for air ducts, including a chopper module, a power module, and a filter module horizontally divided by a partition inside a cabinet. The chopper module, power module, and filter module are distributed from top to bottom inside the cabinet and are fixedly connected by welding plates to form a complete device. The chopper module includes a chopper resistor and a chopper unit. The power module includes a power unit, an air collector shroud, and a first three-phase fan. By setting the installation position between the air collector shroud, power unit, and first three-phase fan, the air collected by the air collector shroud can flow precisely through the power unit and then out from the first three-phase fan at a higher position, enhancing the individual heat dissipation effect on the power unit with large heat generation. By setting a separate heat dissipation system consisting of an air collector shroud and a first three-phase fan inside the power module, the accumulation of dust in the internal parts of the chopper module and filter module inside the cabinet can be reduced, improving heat dissipation efficiency and reducing the failure rate of the entire unit.

Description

Technical Field

[0001] This utility model belongs to the technical field of power generation converter cabinets, specifically relating to a dustproof device for air ducts. Background Technology

[0002] As the link between wind turbines and the power grid, wind power converters transform the electrical energy generated by wind turbines to meet power transmission requirements and output it to the grid. A converter typically consists of a power cabinet, a control cabinet, and a grid-connection cabinet. However, in traditional structures, the layout of components in each cabinet is unreasonable, the space occupied is large, and the air-cooling effect is poor, especially in power cabinets. The power units in the cabinet generate a lot of heat and are difficult to dissipate, requiring a large amount of air for cooling, resulting in poor dust protection of the whole machine. This phenomenon has become a problem that urgently needs to be solved by people in this field. Utility Model Content

[0003] The purpose of this invention is to provide a dustproof device for air ducts, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a dustproof device for air ducts, including a chopper module, a power module and a filter module horizontally divided by a partition inside the cabinet. The chopper module, power module and filter module are distributed from top to bottom inside the cabinet. The chopper module, power module and filter module are fixedly connected by welding plates to form a complete device. The chopper module includes a chopper resistor and a chopper unit; The power module includes a power unit, an air collector shroud, and a first three-phase fan; The filtering module includes a contactor, a reactor, a filter capacitor, and a second and third-phase fan.

[0005] This utility model further illustrates that: the chopper resistor is installed in parallel with the chopper unit, and the chopper resistor and the chopper unit are connected by an insulating bracket.

[0006] The present invention further describes that: the power unit is disposed inside the power module, the air collector is disposed at the lower front part of the power module, and the first three-phase fan is disposed at the upper back of the power module. The air collector, the power unit and the first three-phase fan are distributed from bottom to top inside the power module.

[0007] This utility model further illustrates that: multiple sets of power units are arranged in parallel, the number and spacing of the air collecting shrouds are the same as those of the power units, and two sets of the first three-phase fans are arranged in parallel.

[0008] This utility model further describes that: the air collecting hood has a funnel-shaped structure, the large-diameter end of the air collecting hood faces the outside of the cabinet, and a dust filter is provided on the inner wall of the air collecting hood.

[0009] This utility model further describes that: the contactor is arranged in parallel in front of the filter capacitor, the contactor and the filter capacitor are located on the left side of the internal space of the filter module, the reactor is arrayed on the right side of the internal space of the filter module, and a second three-phase fan is fixedly installed behind the filter module, and the second three-phase fan is arranged in parallel with the first three-phase fan.

[0010] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model, By setting the installation positions between the air collector shroud, power unit, and first three-phase fan, the air collected by the air collector shroud can flow precisely through the power unit and then out from the first three-phase fan at a higher position, enhancing the individual heat dissipation effect on the power unit with large heat generation. By setting a separate heat dissipation system consisting of an air collector shroud and the first three-phase fan inside the power module, the accumulation of dust in the components inside the chopper module and filter module inside the cabinet can be reduced, improving heat dissipation efficiency and reducing the failure rate of the whole machine. By setting each power unit to receive individual air intake from the air shroud, uniform heat dissipation of each power unit is ensured, avoiding poor heat dissipation due to insufficient air intake in some power units. The two sets of first and third phase fans can enhance the exhaust capacity inside the power module and improve the overall heat dissipation efficiency inside the power module. At the same time, this layout makes the internal structure of the power module more regular, making the overall power cabinet structure of the device compact and space-saving. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view structural diagram of this utility model.

[0012] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0014] In the diagram: 1. Chopper module; 101. Chopper resistor; 102. Chopper unit; 2. Power module; 201. Power unit; 202. Air collector shroud; 203. First three-phase fan; 3. Filter module; 301. Contactor; 302. Reactor; 303. Filter capacitor; 304. Second three-phase fan. Detailed Implementation

[0015] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example 1

[0016] A dustproof device for air ducts includes a chopper module 1, a power module 2, and a filter module 3, which are horizontally divided by a partition inside a cabinet. The chopper module 1, the power module 2, and the filter module 3 are distributed from top to bottom inside the cabinet. The chopper module 1, the power module 2, and the filter module 3 are fixedly connected by welding plates to form a complete device. Chopper module 1 includes a chopper resistor 101 and a chopper unit 102; Power module 2 includes power unit 201, air collector 202 and first three-phase fan 203; The filter module 3 includes a contactor 301, a reactor 302, a filter capacitor 303, and a second and third phase fan 304. Example 2

[0017] Unlike Embodiment 1, the chopper resistor 101 and chopper unit 102 are installed in parallel. The chopper resistor 101 and chopper unit 102 are connected by an insulating bracket. The parallel installation of the chopper resistor 101 and chopper unit 102 by the insulating bracket can optimize the internal space layout of the chopper module 1, reduce the dust accumulation dead corners caused by the messy distribution of components in the chopper module 1, and ensure the insulation performance between the chopper resistor 101 and chopper unit 102, avoiding failure caused by improper installation of the two. Example 3

[0018] Unlike Embodiment 2, the power unit 201 is located inside the power module 2, the air collector 202 is located at the lower front of the power module 2, and the first three-phase fan 203 is located at the upper back of the power module 2. The air collector 202, the power unit 201, and the first three-phase fan 203 are distributed from bottom to top inside the power module 2. The installation position between the air collector 202, the power unit 201, and the first three-phase fan 203 allows the air collected by the air collector 202 to flow precisely through the power unit 201 and then out from the first three-phase fan 203 at a higher position, which enhances the individual heat dissipation effect of the power unit 201, which generates a lot of heat. By setting up a heat dissipation system composed of the air collector 202 and the first three-phase fan 203 separately inside the power module 2, the accumulation of dust in the internal parts of the chopper module 1 and the filter module 3 can be reduced, the heat dissipation efficiency can be improved, and the failure rate of the whole machine can be reduced.

[0019] Multiple sets of power units 201 are arranged in parallel. The number and spacing of the air collection hoods 202 are the same as those of the power units 201. Two sets of first three-phase fans 203 are arranged in parallel to ensure that each power unit 201 can receive individual air intake from the air collection hoods 202, ensuring uniform heat dissipation of each power unit 201 and avoiding poor heat dissipation due to insufficient air intake of some power units 201. The two sets of first three-phase fans 203 can enhance the exhaust capacity of the power module 2 and improve the overall heat dissipation efficiency of the power module 2. At the same time, this layout makes the internal structure of the power module 2 more regular, making the overall power cabinet structure of the device compact and occupying less space.

[0020] The air collector hood 202 has a funnel-shaped structure, with the larger diameter end of the air collector hood 202 facing outwards from the cabinet. The inner wall of the air collector hood 202 is equipped with a dust filter. The funnel shape of the air collector hood 202 can expand the air intake range, and the dust filter on the inner wall can initially filter some dust when the air enters the air collector hood 202, reducing the amount of dust accumulated in the internal power unit 201. Example 4

[0021] Unlike Embodiment 2, the contactor 301 is arranged in parallel in front of the filter capacitor 303. The contactor 301 and the filter capacitor 303 are located on the left side of the internal space of the filter module 3. The reactor 302 is arrayed on the right side of the internal space of the filter module 3. The second three-phase fan 304 is fixedly installed at the rear of the filter module 3. The second three-phase fan 304 and the first three-phase fan 203 are arranged in parallel. The layout can optimize the internal space allocation of the filter module 3, so that the components are arranged in an orderly manner, making the overall structure of the device compact and occupying little space. The second three-phase fan 304 can perform heat dissipation operation on the internal components of the filter module 3, which facilitates the overall operation of the device.

[0022] Working Principle: The cabinet is divided into chopper module 1, power module 2, and filter module 3 by longitudinal partitions. The power unit 201, which generates a large amount of heat, is the core working component in power module 2. External air is initially filtered by the funnel-shaped air hood 202 with a dust filter at the lower front of power module 2, and then directed into the heat sink of power unit 201 for heat dissipation. Subsequently, the first three-phase fan 203 at the back of power module 2 exhausts air from power module 2. At the same time, the second three-phase fan 304 assists in exhausting and cooling the filter module 3. Chopper module 1, power module 2, and filter module 3 are installed in a regular layout, achieving directional ventilation, dust filtration, and heat dissipation as a whole, preventing dust accumulation in other components inside the cabinet.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A dustproof device for air ducts, comprising a chopper module (1), a power module (2), and a filter module (3) horizontally divided by a partition inside a cabinet, characterized in that: The chopper module (1), power module (2) and filter module (3) are distributed from top to bottom in the cabinet. The chopper module (1), power module (2) and filter module (3) are fixedly connected by welding plates to form a complete device. The chopper module (1) includes a chopper resistor (101) and a chopper unit (102); The power module (2) includes a power unit (201), an air collector (202), and a first three-phase fan (203). The filtering module (3) includes a contactor (301), a reactor (302), a filter capacitor (303), and a second and third phase fan (304).

2. The dustproof device for air ducts according to claim 1, characterized in that: The chopper resistor (101) is installed in parallel with the chopper unit (102), and the chopper resistor (101) and the chopper unit (102) are connected by an insulating bracket.

3. The dustproof device for air ducts according to claim 1, characterized in that: The power unit (201) is located inside the power module (2), the air collector (202) is located at the lower front of the power module (2), and the first three-phase fan (203) is located at the upper back of the power module (2). The air collector (202), the power unit (201) and the first three-phase fan (203) are distributed from bottom to top inside the power module (2).

4. A dustproof device for air ducts according to claim 1, characterized in that: Multiple sets of the power units (201) are arranged in parallel. The number and spacing of the air collecting hoods (202) are the same as those of the power units (201). Two sets of the first three-phase fans (203) are arranged in parallel.

5. A dustproof device for air ducts according to claim 1, characterized in that: The air collecting hood (202) has a funnel-shaped structure, with the large-diameter end of the air collecting hood (202) facing the outside of the cabinet, and a dust filter is provided on the inner wall of the air collecting hood (202).

6. A dustproof device for air ducts according to claim 1, characterized in that: The contactor (301) is arranged in parallel in front of the filter capacitor (303). The contactor (301) and the filter capacitor (303) are located on the left side of the internal space of the filter module (3). The reactor (302) is arrayed on the right side of the internal space of the filter module (3). The second three-phase fan (304) is fixedly installed behind the filter module (3). The second three-phase fan (304) and the first three-phase fan (203) are arranged in parallel.

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