CN201401296Y - A Wind Turbine Tower Base Frequency Conversion Cabinet Installation Structure Facilitating Heat Dissipation - Google Patents

Abstract

The utility model discloses an installation structure of a tower base frequency conversion cabinet of a wind power generator favorable for heat dissipation. The installation structure includes a tower tube (1), a foundation platform (4) and a foundation (5), and there is a closed space enclosed by the tower tube (1) between the foundation platform (4) and the foundation (5). A tower base frequency conversion cabinet (2) is placed on the base platform (4), and a ventilation hole (3) is also arranged on the base platform (4), and the ventilation hole (3) is located directly in front of the tower base frequency conversion cabinet (2). The utility model expands the cooling and ventilation circulation space at the bottom of the tower by adding ventilation holes, so that the unheated air below the base platform at the bottom of the tower is sucked into the cabinet by the exhaust fan of the tower base frequency conversion cabinet, thereby strengthening the tower base. The cooling and ventilation effect of the frequency conversion cabinet can effectively prevent the tower base frequency conversion cabinet from overheating.

Description

A Wind Turbine Tower Base Frequency Conversion Cabinet Installation Structure Facilitating Heat Dissipation

technical field

The utility model relates to an installation structure of a tower base frequency conversion cabinet of a wind power generator favorable for heat dissipation, and belongs to the technical field of wind power generation equipment.

Background technique

With the increasing pressure on energy and the environment, clean and renewable new energy has received widespread attention in recent years. Among all kinds of green energy, wind energy is one of the renewable energy sources with great potential. The technology of wind power generation is relatively mature, and it has the most conditions for large-scale commercial development, and the cost is relatively low. The use of wind energy to generate electricity has attracted increasing attention and has shown a broad space for growth.

Wind power technology attaches great importance to the stability of unit operation. At present, most of the frequency conversion cabinets (also called frequency converters) on wind turbines are arranged at the base of the tower, called tower base frequency conversion cabinets. Due to the limitation of specific environmental space and the high heat generation of tower-based inverter cabinets during work, the cooling and ventilation of tower-based inverter cabinets is a common technical difficulty. If it is not handled properly, it will cause the tower base inverter cabinet to overheat and cause the entire wind turbine to shut down.

As shown in Figure 1, in the prior art, the cooling and ventilation scheme of the tower base frequency conversion cabinet of the wind power generator is often used: the tower base frequency conversion cabinet is installed on the foundation platform 4 inside the tower tube 1, and the tower base frequency conversion cabinet 2 is located on its own The exhaust fan at the lower part of the cabinet draws in external air, and after internal heat exchange, the hot air is exhausted by the exhaust fan at the upper part of the cabinet. The problem with this solution is: in the narrow space at the bottom of the tower, even if the air circulation inside and outside the cabinet is maintained quickly through the circulation ventilation equipment of the tower base inverter cabinet itself, when the unit runs continuously in summer for a long time, due to the space at the bottom of the tower The air will be preheated, so it will still cause the tower base inverter to overheat.

In the Chinese utility model patent with the patent number ZL 200720198662.X, a platform for placing the frequency converter of the fan is disclosed, which is used to place the frequency converter in the fan. The platform is fixed at the bottom of the tower of the wind turbine, and includes a bracket with several supporting feet, a connecting plate fixed on the bottom surface of each supporting foot and fixed to the foundation, and a circular platform plate on the bracket. There is a gap directly below the inverter on the platform for heat dissipation. In this utility model, a platform is designed at the bottom of the tower, and the frequency converter is installed on the platform. For the cooling of the frequency converter, a water cooling system is also installed, and a gap is left directly under the frequency converter to facilitate heat dissipation. However, the implementation cost of this technical solution is relatively high, and it is not practical enough.

Contents of the invention

The technical problem to be solved by the utility model is to provide a wind power generator tower base frequency conversion cabinet installation structure that is conducive to heat dissipation. The tower base frequency conversion cabinet installation structure can effectively overcome the existing wind power generation unit in summer through the improvement of the basic platform. Long-term continuous operation will easily lead to overheating of the tower base inverter cabinet.

To achieve above-mentioned purpose, the utility model adopts following technical scheme:

A wind turbine tower base frequency conversion cabinet installation structure that is conducive to heat dissipation, including a tower 1, a foundation platform 4 and a foundation 5, the foundation platform 4 and the foundation 5 are enclosed by the tower 1 The closed space of the tower base frequency conversion cabinet 2 is placed on the foundation platform 4, and it is characterized in that:

A ventilation hole 3 is also provided on the base platform 4 , and the ventilation hole 3 is located directly in front of the frequency conversion cabinet 2 of the tower base.

The wind power generator tower base frequency conversion cabinet installation structure provided by the utility model expands the cooling and ventilation circulation space at the bottom of the tower by adding ventilation holes to the base platform at the bottom of the tower, so that the unpreheated air below the base platform at the bottom of the tower The air is drawn into the cabinet body by the exhaust fan of the tower base inverter cabinet, thereby enhancing the cooling and ventilation effect of the tower base inverter cabinet and effectively preventing the tower base inverter cabinet from overheating.

Description of drawings

The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the existing wind turbine tower base frequency conversion cabinet cooling and ventilation scheme;

Fig. 2 is a schematic diagram of the installation structure of the wind power generator tower base frequency conversion cabinet provided by the utility model, which is beneficial to heat dissipation.

Detailed ways

As shown in FIG. 2 , there is a closed space enclosed by the tower tube 1 between the foundation 5 and the foundation platform 4 of the tower foundation of the wind power generator, and there is a large amount of unpreheated air in this space. In order to make full use of this air-cooling resource, the installation structure of the wind turbine tower base frequency conversion cabinet is provided with ventilation holes 3 on the base platform 4 at the bottom of the tower tube 1 (ie, the installation plane of the tower base frequency conversion cabinet). Different from the prior art, the ventilation holes are not directly arranged directly under the tower base frequency conversion cabinet 2 , but are arranged directly in front of the tower base frequency conversion cabinet 2 . The size of the ventilation hole can be set according to the needs of ventilation and heat dissipation, and the shape can also adopt various forms such as circle and square. In order to facilitate the operation of the staff, a metal mesh or metal grid can be installed on the ventilation hole so that the staff can walk or operate on it.

The above-mentioned ventilation holes 3 expand the cooling and ventilation circulation space at the bottom of the tower 1, so that the unheated air below the base platform 4 at the bottom of the tower is directly drawn into the cabinet by the exhaust fan of the tower base frequency conversion cabinet, so that the unheated air The cooling cabinet body significantly improves the cooling and ventilation effect of the tower base inverter cabinet. The cooling and ventilation inlet airflow and exhaust outlet airflow are separated by the base platform 4 to avoid air preheating at the cooling and ventilation inlet end, and realize efficient cooling and ventilation of the tower base inverter cabinet.

Referring to the cooling ventilation air flow diagram shown in Figure 2, arrow A indicates the unheated air from below the base platform 4, arrow B indicates that the unheated air enters the tower base inverter cabinet 2 from the ventilation hole 3, and arrow C indicates The hot air is exhausted by the exhaust fan above the rear of tower base frequency conversion cabinet 2.

The unpreheated air below the base platform 4 is sucked into the cabinet through the special ventilation hole 3 under the negative pressure generated by the exhaust fan at the bottom of the tower base inverter cabinet 2. After heat exchange, the hot air passes through the tower base inverter cabinet 2 Exhaust from the upper rear exhaust fan completes the circulation of the cooling ventilation air. The unpreheated air at the air inlet mainly comes from below the basic platform 4, and the hot air at the exhaust port rises to a high place due to convection, and the two airflows are bounded by the basic platform 4.

In order to further improve the effect of cooling ventilation, some water tanks filled with water can be set on the foundation 5 . Due to the large specific heat capacity of water, the air temperature between the foundation platform 4 and the foundation 5 is difficult to rise, thereby enhancing the cooling and ventilation effect of the tower base inverter cabinet, and effectively avoiding the overheating problem of the tower base inverter cabinet during long-term continuous operation in summer.

The installation structure of the wind power generator tower base frequency conversion cabinet which is beneficial to heat dissipation provided by the utility model has been described in detail above. For those skilled in the art, any obvious changes made to the utility model without departing from the essential spirit of the utility model will constitute an infringement of the utility model patent and will bear corresponding legal responsibilities.

Claims (4)

1. wind-power generator tower-base frequency conversion tank mounting structure that is beneficial to heat radiation, comprise tower tube (1), basic platform (4) and basis (5), have by described tower tube (1) between described basic platform (4) and described basis (5) and surround the enclosed space that forms, on basic platform (4), be placed with column foot frequency conversion tank (2), it is characterized in that:

On described basic platform (4), also be provided with vent hole (3).

2. the wind-power generator tower-base frequency conversion tank mounting structure that is beneficial to heat radiation as claimed in claim 1 is characterized in that:

Described vent hole (3) is positioned at the dead ahead of described column foot frequency conversion tank (2).

3. the wind-power generator tower-base frequency conversion tank mounting structure that is beneficial to heat radiation as claimed in claim 1 is characterized in that:

Described vent hole is equipped with wire netting or metal grate on (3).

4. the wind-power generator tower-base frequency conversion tank mounting structure that is beneficial to heat radiation as claimed in claim 1 is characterized in that:

On described basis (5), also be provided with tank.

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