Wind turbine generator tower footing dustproof ventilation and heat dissipation system and wind turbine generator

Abstract

The utility model discloses a wind turbine generator tower footing dustproof ventilation and heat dissipation system and a wind turbine generator. The wind turbine generator tower footing dustproof ventilation and heat dissipation system comprises a converter. A tower footing platform is arranged in a tower drum and is close to the lower part of the tower drum, and a downward through ventilation hole is formed in the tower footing platform; the tower drum door assembly is embedded in the side wall of the tower drum and is close to the lower part of the tower drum; the air inlet axial flow fan is arranged on the tower drum door assembly, located below the tower footing platform and used for sucking external cooling air into the tower drum; the air outlet axial flow fan is arranged on the tower drum, located above the tower footing platform and used for pumping air in the tower drum out of the tower drum. The wind turbine generator adopting the dustproof ventilation and heat dissipation system for the tower footing of the wind turbine generator not only can play a role in heat dissipation in the tower drum, but also can improve the internal environment of the tower drum, reduce accumulated dust and ensure normal and stable operation of a converter.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for wind turbine tower bases, specifically to a dustproof ventilation and heat dissipation system for wind turbine tower bases and a wind turbine. Background Technology

[0002] Wind turbine generators are devices that convert wind energy into electrical energy. During normal operation, wind turbine generators generate heat, requiring appropriate cooling devices to ensure proper operation. Currently, in my country, onshore wind turbine generators often place the converter at the bottom of the tower (tower base), and to better control costs, the converter is usually air-cooled.

[0003] When an air-cooled converter is located at the tower base, it is usually necessary to introduce outside air into the tower to dissipate heat from the converter. In areas with severe dust storms and frequent sandstorms, dust accumulates heavily inside the wind turbine tower base, requiring frequent cleaning by maintenance personnel and increasing maintenance costs. Furthermore, dust particles can enter the converter cabinet, which has a lower protection level, significantly impacting the converter's heat dissipation and safe operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a dustproof ventilation and heat dissipation system for wind turbine tower base, which can not only dissipate heat, but also improve the internal environment of the wind turbine tower, reduce dust accumulation, and ensure the normal and stable operation of the converter.

[0005] To achieve the above objectives, this utility model provides a dustproof ventilation and heat dissipation system for wind turbine tower bases, comprising:

[0006] The converter is installed inside the tower via a tower base platform, near the lower part of the tower. The tower base platform has downward-through ventilation holes.

[0007] A tower door assembly is embedded in the side wall of the tower and close to the lower part of the tower.

[0008] An inlet axial flow fan is mounted on the tower door assembly and located below the tower base platform. The inlet axial flow fan is used to draw external cooling air into the tower.

[0009] An exhaust axial flow fan is installed on the tower and located above the tower base platform, for drawing air out of the tower.

[0010] Furthermore, it also includes a filter assembly disposed on the tower door assembly and located on the outside of and covering the air inlet axial flow fan, the filter assembly being capable of filtering the air passing through the tower door assembly.

[0011] Furthermore, the filter assembly includes a filter cotton layer that covers the outside of the axial flow fan.

[0012] Furthermore, the filter assembly also includes louvers that cover the filter cotton layer and are positioned outward relative to the filter cotton layer.

[0013] A wind turbine generator set includes the aforementioned dustproof ventilation and heat dissipation system, which is installed inside the tower casing of the wind turbine generator set tower base.

[0014] The beneficial effects of this utility model are:

[0015] The aforementioned dustproof ventilation and heat dissipation system for wind turbine towers and the wind turbine itself, during operation, draw cooling air into the tower through the inlet axial flow fan. Since the inlet axial flow fan is located below the tower base platform and the outlet axial flow fan is located above it, a positive pressure box structure is formed below the tower base platform. Dust settles naturally and enters the space where the frequency converter is located, thus reducing dust accumulation. By employing a dustproof ventilation and heat dissipation system, the internal environment of the tower can be improved, dust accumulation reduced, and the normal and stable operation of the frequency converter ensured. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of a dustproof ventilation and heat dissipation system for a wind turbine tower base, provided in one embodiment of the present invention.

[0018] Figure 2 for Figure 1 This is a schematic diagram from another angle of a dustproof ventilation and heat dissipation system for wind turbine tower bases;

[0019] Figure 3 for Figure 1 The diagram shows a converter installed on the tower base platform in a dustproof ventilation and heat dissipation system for a wind turbine tower base.

[0020] Figure 4 for Figure 1The diagram shows an assembly of the tower door assembly, air intake axial flow fan, and filter assembly in a dustproof ventilation and heat dissipation system for a wind turbine tower base.

[0021] Figure label:

[0022] 1. Tower;

[0023] 100. Inverter; 200. Tower base platform; 300. Tower door assembly; 400. Inlet axial flow fan; 500. Outlet axial flow fan; 600. Filter assembly; 610. Filter cotton layer; 620. Louver. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0025] Please see Figures 1 to 4 This utility model provides a dustproof ventilation and heat dissipation system for wind turbine tower base, including a converter 100, a tower door assembly 300, an inlet axial flow fan 400, and an outlet axial flow fan 500.

[0026] Specifically, the converter 100 is installed inside the tower 1 via the tower base platform 200, near the lower part of the tower 1. The tower base platform 200 has downward-through ventilation holes. In specific implementations, the converter 100 can be an air-cooled converter commonly used in the prior art. The converter 100 is used for air cooling. The tower door assembly 300 is embedded in the side wall of the tower 1, near the lower part of the tower 1.

[0027] An inlet axial flow fan 400 is mounted on the tower door assembly 300 and located below the tower base platform 200. The inlet axial flow fan 400 is used to draw outside cooling air into the tower 1. An outlet axial flow fan 500 is mounted on the tower 1 and located above the tower base platform 200. It is used to draw air from inside the tower 1 to the outside of the tower 1.

[0028] In this embodiment, the tower base platform 200 includes a support plate frame and support legs. The support plate frame is installed inside the tower 1 via the support legs, and the support plate frame has vertically penetrating ventilation holes. The converter 100 is fixed above the support plate frame.

[0029] During operation, cooling air is drawn into the tower 1 by the inlet axial flow fan 400. Since the inlet axial flow fan 400 is located below the tower base platform 200, and the outlet axial flow fan 500 is located above the tower base platform 200, a positive pressure box structure is formed below the tower base platform 200. Dust settles naturally and enters the space where the frequency converter is located, thus reducing dust accumulation. By adopting a dustproof ventilation and heat dissipation system, the internal environment of the tower 1 can be improved, dust accumulation reduced, and the normal and stable operation of the frequency converter 100 ensured.

[0030] In a preferred embodiment, the dustproof ventilation and heat dissipation system further includes a filter assembly 600, which is disposed on the tower door assembly 300 and located on the outside of the air inlet axial flow fan 400 and covers the air inlet axial flow fan. The filter assembly 600 can filter the air passing through the air inlet axial flow fan 400.

[0031] Specifically, the filter assembly 600 includes a filter cotton layer 610, which covers the air intake axial flow fan 400. The filter cotton layer 610 can filter the air.

[0032] Furthermore, the filter assembly 600 includes louvers 620 that cover the filter cotton layer 610. When cooling is not required, the louvers 620 are closed to further prevent dust. When cooling is needed, the louvers 620 are opened.

[0033] In addition, this application also provides a wind turbine generator, which includes the aforementioned dustproof ventilation and heat dissipation system, and the dustproof ventilation and heat dissipation system is installed inside the tower 1.

[0034] The design steps for the above-mentioned dustproof ventilation and heat dissipation system for wind turbine tower base are as follows:

[0035] 1) Determine the input information such as the heat dissipation power of the inverter 100 and the air volume of the fan;

[0036] 2) Based on the air volume of the converter 100, the models of the inlet axial flow fan 400 and the outlet axial flow fan 500 are initially selected;

[0037] 3) Arrange the positions of the corresponding components according to the overall system structure;

[0038] 4) Perform CFD thermal simulation on the entire tower base ventilation and heat dissipation system;

[0039] 5) Confirm whether the heat dissipation requirements are met based on the simulation results. If the heat dissipation is not met, adjust the two fan models in step two and perform iterative calculations again until the design requirements are met.

[0040] The working principle of the above-mentioned dustproof ventilation and heat dissipation system is as follows:

[0041] 1) Cooler air enters the tower 1 through the louver 620 under the door. A filter cotton layer 610 is installed after the louver 620 for the first sand and dust filtration.

[0042] 2) The air intake axial flow fan 400 provides power to draw the cooler external air into the bottom space of the tower 1;

[0043] 3) There is a relatively long distance between the converter 100 and the tower door assembly 300, and the air after passing through the filter cotton layer 610 settles in this area (settling zone);

[0044] 4) The air inlet is located at the bottom of the converter 100. After the lower temperature air enters from the bottom of the converter 100, it dissipates heat from the internal components of the converter 100. After the lower temperature air cools the converter 100, it is discharged from the back of the converter 100 and discharged to the outside of the tower 1 through the axial fan on the wall of the tower 1.

[0045] The adoption of a dustproof ventilation and heat dissipation system for the wind turbine tower base can not only dissipate heat but also reduce dust. By adopting a dustproof ventilation and heat dissipation system, the internal environment of the tower 1 can be improved, dust accumulation can be reduced, and the normal and stable operation of the converter 100 can be ensured.

[0046] 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A dustproof ventilation and heat dissipation system for wind turbine tower bases, characterized in that, include: The converter is installed inside the tower via a tower base platform and is located near the lower part of the tower. The tower base platform has downward-through ventilation holes. A tower door assembly is embedded in the side wall of the tower and close to the lower part of the tower. An air inlet axial flow fan is installed on the tower door assembly and is located below the tower base platform. The air inlet axial flow fan is used to draw external cooling air into the tower. and An exhaust axial flow fan is installed on the tower and located above the tower base platform to extract air from inside the tower to the outside of the tower. It also includes a filter assembly disposed on the tower door assembly and located on the outside of and covering the inlet axial flow fan, the filter assembly being capable of filtering the air passing through the inlet axial flow fan; The filter assembly includes a filter cotton layer, which covers the outside of the air inlet axial flow fan. The filter assembly also includes louvers that cover the filter cotton layer and are positioned outward relative to the filter cotton layer.

2. The wind turbine tower base dustproof ventilation and heat dissipation system according to claim 1, characterized in that, The tower base platform includes a support plate frame and support legs. The support plate frame is installed inside the tower through the support legs. The support plate frame has ventilation holes that run vertically through it. The converter is fixed above the support plate frame.

3. A wind turbine generator set, characterized in that, The wind turbine includes a dustproof ventilation and heat dissipation system for the wind turbine tower base as described in any one of claims 1-2, wherein the dustproof ventilation and heat dissipation system is installed inside the tower.

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