CN201570345U - Wind turbine transformer cooling device and wind turbine - Google Patents

Abstract

The utility model relates to a cooling device for a transformer of a wind turbine and a wind turbine, comprising: a first fan is arranged on the upper part of a transformer chamber for installing a transformer in a tower of the wind turbine, and the air inlet of the first fan is connected to the transformer chamber. Internal communication; one end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer chamber. By arranging the first fan on the upper part of the transformer room, the hot air in the transformer room is discharged through the first air channel, thereby improving the cooling efficiency of the transformer of the wind turbine.

Description

Wind turbine transformer cooling device and wind turbine

technical field

The utility model relates to a motor device, in particular to a cooling device for a transformer of a wind turbine and a wind turbine.

Background technique

In the wind turbine, the transformer is one of the most important components in the wind turbine, and the electric energy generated by the wind turbine needs to be converted by the transformer before it can be used. At present, the transformers of wind turbines on land are placed outside the tower. This installation method is conducive to the maintenance and heat dissipation of the transformers. However, due to the limitations of offshore installation space and environmental conditions, it is impossible to provide a separate space for the transformer outside the tower.

In the prior art, the transformer is usually placed at the bottom of the tower for offshore wind turbines. Although such a layout solves the problem of narrow installation space at sea, the heat dissipation problem of the transformer has not been solved. The inside of the tower of the offshore wind turbine is a relatively airtight environment, and the transformer will generate a lot of heat during the working process, and the transformer requires the working environment temperature not to be higher than 70 degrees Celsius. Therefore, the existing offshore wind turbine has heat dissipation efficiency. low problem.

Utility model content

The utility model provides a cooling device for a transformer of a wind turbine and a wind turbine, so as to improve the cooling efficiency of the transformer of the wind turbine.

The utility model provides a wind turbine transformer cooling device, comprising:

The first fan is arranged in the upper part of the transformer room for installing the transformer in the tower of the wind turbine, and the air inlet of the first fan communicates with the inside of the transformer room;

The first air duct, one end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer chamber.

The utility model also provides a wind turbine, including a wind generator, a transformer electrically connected to the wind generator, and a tower for placing the wind generator and the transformer, and is characterized in that it also includes:

The first fan is arranged in the upper part of the transformer room for installing the transformer in the tower, and the air inlet of the first fan communicates with the inside of the transformer room;

The first air duct, one end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer chamber.

The transformer cooling device of the wind turbine and the wind turbine of the utility model arrange the first fan on the upper part of the transformer room to discharge the hot air in the transformer room through the first air channel, thereby improving the heat dissipation efficiency of the transformer of the wind turbine.

Description of drawings

Fig. 1 is the schematic diagram of the assembly of the wind turbine transformer cooling device of embodiment one of the utility model;

Fig. 2 is a schematic diagram of the assembly of the cooling device for the transformer of the wind turbine in the second embodiment of the utility model.

Detailed ways

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

Embodiment one

Fig. 1 is a schematic diagram of assembly of a wind turbine transformer cooling device according to an embodiment of the present utility model. As shown in FIG. 1 , the embodiment of the utility model provides a transformer cooling device for a wind turbine, including a first fan 1 and a first air duct 2 .

The first fan 1 is arranged in the upper part of the transformer room 41 for installing the transformer 4 in the wind turbine tower 3, and the air inlet 11 of the first fan communicates with the inside of the transformer room 41;

One end of the first air duct 2 is connected to the air outlet 12 of the first fan 1 , and the other end of the first air duct 2 extends out of the transformer chamber 41 .

The wind turbine transformer cooling device of the embodiment of the utility model is described by taking the wind turbine transformer cooling device installed in the offshore wind turbine as an example. The offshore wind turbines are limited by space conditions and environmental conditions, so the transformer 4 needs to be arranged in the transformer room 41 for installing the transformer 4 in the wind turbine tower 3 . During the working process of the transformer 4, the first fan 1 starts to work. The air inlet 11 of the first fan 1 communicates with the inside of the transformer chamber 41 , so the hot air in the transformer chamber 41 is discharged to the external environment through the first air duct 2 connected to the air outlet 12 of the first fan 1 . Since the hot air inside is drawn into the external environment by the first blower 1 , a negative pressure environment is formed inside the transformer room 41 . A ladder opening 7 is also provided inside the wind turbine tower 3 , and the ladder opening 7 is used for workers to enter the transformer room 41 to maintain the transformer. When a negative pressure environment is formed inside the transformer room 41, the cold air in the external environment can enter the transformer room 41 through the ladder opening 7. After the cold air is heated by the transformer 4, it absorbs the heat of the transformer 4 and is heated by the transformer 4. The final cold air becomes hot air, and the hot air is discharged from the transformer room 41 again by the air inlet 11 of the first blower fan 1 . The air circulation in the transformer room 41 performs the convection operation of the above-mentioned cold air and hot air, thereby realizing the convection between the hot air in the transformer room 41 and the cold air in the external environment, and cooling the transformer 4 through the cold air in the external environment .

The cooling device for the transformer of the wind turbine in the embodiment of the utility model, by setting the first fan on the upper part of the transformer room, the hot air in the transformer room is discharged through the first air duct, so that a negative pressure is formed inside the transformer room, and the cold air acts on the negative pressure. Next, enter the transformer room through the ladder to cool the transformer, so that the heat generated by the transformer can be effectively dissipated, and the heat dissipation efficiency of the wind turbine transformer cooling device in the embodiment of the utility model is improved.

Embodiment two

Fig. 2 is a schematic diagram of the assembly of the cooling device for the transformer of the wind turbine in the second embodiment of the utility model. As shown in Figure 2, the wind turbine transformer cooling device of the embodiment of the utility model is based on the first embodiment above, and the difference is that the utility model embodiment of the wind turbine transformer cooling device can also include: a second fan 5 and a second air duct 6. The second fan 5 is arranged at the bottom of the transformer chamber 41, and the air outlet 52 of the second fan 5 communicates with the inside of the transformer chamber 41; one end of the second air duct 6 is connected with the air inlet 51 of the second fan 5, and the second The other end of the air duct 6 extends out of the transformer chamber 41 . The function of the second fan 5 is to directly draw the cold air in the external environment into the inside of the transformer room 41 through the second air duct 6 . Specifically, during the working process of the transformer 4, the second fan 5 is turned on, the air inlet 51 of the second fan 5 is connected to the second air channel 6, and the cold air in the external environment is sucked into the second fan by the second air channel 6 5 in. And the air outlet 52 of the second blower fan 5 communicates with the inside of the transformer chamber 41, and the second blower fan 5 is arranged on the bottom of the transformer chamber 41, therefore, the cold air sucked by the second blower fan 5 passes through the air outlet 52 of the second blower fan 5 Enter the lower part of the transformer chamber 41. The cold air entering the lower part of the transformer room 41 absorbs heat from the bottom to the top of the transformer 4, and the air inlet 11 of the first fan 1 located at the upper part of the transformer room 41 heats the hot air formed by the transformer 4 through the first air duct 2 discharged into the external environment.

In the embodiment of the utility model, the cooling device for the transformer of the wind turbine unit directly sucks the external cold air into the lower part of the transformer room by setting the second fan, and discharges the hot air from the upper part of the transformer room in combination with the first fan. Therefore, the convection velocity of the cold air and the hot air in the transformer room is accelerated, the heat of the transformer is dissipated more effectively, and it is more conducive to improving the heat dissipation efficiency of the cooling device for the transformer of the wind turbine in the embodiment of the utility model.

On the basis of the above technical solution, optionally, the second air duct 6 is provided separately from the first air duct 2 . The second air passage 6 is used to suck cold air into the transformer chamber 41, and the first air passage 2 is used to discharge the hot air in the transformer chamber 41. Therefore, the second air passage 6 and the first air passage 2 are respectively They are arranged at different positions of the tower 3 to separate the second air duct 6 from the first air duct 2 .

In the embodiment of the utility model, the cooling device for the transformer of the wind turbine set separates the second air duct from the first air duct so that the second air duct will not inhale the hot air discharged from the first air duct, which is more conducive to improving the performance of the utility model embodiment. Heat dissipation efficiency of wind turbine transformer cooling device.

On the basis of the above technical solution, optionally, the first fan 1 and/or the second fan 5 is an axial fan. The axial flow fan has large flow rate and high efficiency, and has high efficiency under various working conditions. Using the first fan 1 and the second fan 5 enables the cold air and hot air in the transformer room 41 to convect faster, and the axial flow fan is more suitable for the environmental requirements of offshore operations.

In the embodiment of the utility model, the cooling device for the transformer of the wind turbine set the first fan and the second fan as axial flow fans, so that the intake of cold air and the discharge of hot air are increased, and the cooling of cold air and hot air in the transformer room is accelerated. The convection speed of the air makes the heat generated by the transformer dissipate faster, which is more conducive to improving the heat dissipation efficiency of the cooling device for the transformer of the wind turbine in the embodiment of the present utility model.

On the basis of the above technical solution, optionally, the wind turbine transformer cooling device of the embodiment of the utility model also includes a temperature sensor (not shown), the temperature sensor is arranged in the transformer chamber 41, and the temperature sensor is electrically connected to the first fan 1, It is used to detect the temperature in the transformer room 41 and control the start and stop of the first fan 1 . The temperature sensor is used to measure the temperature in the transformer chamber 41. When the temperature in the transformer chamber 41 is higher than the maximum ambient temperature required by the transformer 4, the temperature sensor sends a start signal to the first fan 1 to automatically start the first fan 1. The transformer 4 is cooled down; and when the temperature in the transformer room 41 does not reach the maximum ambient temperature required by the transformer 4, the temperature sensor sends a stop signal to the first fan 1 to automatically stop the first fan 1, thereby saving energy.

In the embodiment of the utility model, the cooling device for the transformer of the wind turbine set is equipped with a temperature sensor in the transformer room, and the temperature sensor automatically controls the opening or closing of the first fan without manual operation of the first fan, which reduces the work intensity of workers. At the same time, when the temperature in the transformer chamber does not reach the maximum ambient temperature required by the transformer, the temperature sensor is used to suspend the operation of the first fan, thereby achieving the effect of energy saving.

The wind turbine transformer cooling device of the embodiment of the utility model can also be used in wind turbines on land or other equipment equipped with transformers, and the utility model does not limit the application environment of the wind turbine transformer cooling device.

The wind turbine transformer cooling device provided by the embodiment of the utility model, by setting the first fan, discharges the hot air in the transformer room through the first air channel, so that the heat generated by the transformer can be effectively dissipated, and the wind turbine generator of the utility model embodiment is improved. Thermal efficiency of transformer cooling devices. By setting the second blower, the external cold air is directly drawn into the lower part of the transformer room, so that the convection speed of the cold air and hot air in the transformer room is accelerated, and the heat of the transformer is dissipated more effectively, which is more conducive to improving the performance of the utility model embodiment. Heat dissipation efficiency of wind turbine transformer cooling device. By separating the second air duct from the first air duct, the second air duct will not inhale the hot air discharged from the first air duct, so that the second air duct inhales cold air from the external environment, which is more beneficial Improve the heat dissipation efficiency of the wind turbine transformer cooling device in the embodiment of the utility model. By setting the first fan and the second fan as axial fans, the intake of cold air and the discharge of hot air are increased, the convection speed of cold air and hot air in the transformer room is accelerated, and the heat generated by the transformer Faster radiation is more conducive to improving the heat dissipation efficiency of the wind turbine transformer cooling device of the embodiment of the utility model. By arranging a temperature sensor in the transformer room, the first fan is automatically controlled to be turned on or off by the temperature sensor, without manual operation of the first fan, which reduces the work intensity of workers. At the same time, when the temperature in the transformer room does not reach the maximum ambient temperature required by the transformer, the temperature sensor is used to suspend the operation of the first fan, thereby achieving the effect of energy saving.

Embodiment three

An embodiment of the utility model provides a wind turbine, including a wind generator, a transformer electrically connected to the wind generator, and a tower for placing the wind generator and the transformer, wherein the wind turbine further includes: A fan and the first air duct.

The first fan is arranged in the upper part of the transformer room for installing the transformer in the tower, and the air inlet of the first fan communicates with the inside of the transformer room;

One end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer room.

The wind turbine set in the embodiment of the utility model is described by taking a wind turbine installed at sea as an example. The working principle of the first fan and the first air duct in the wind turbine in the embodiment of the utility model is the same as that in the first embodiment of the utility model, and the negative pressure is formed inside the transformer room through the first fan, and cold air is introduced into the transformer room To cool down the transformer, the specific process will not be repeated here.

The wind turbine set in the embodiment of the utility model, by setting the first fan on the upper part of the transformer room, the hot air in the transformer room is discharged through the first air duct, so that a negative pressure is formed inside the transformer room, and the cold air passes through the transformer room under the action of the negative pressure. The ladder mouth enters the transformer room to cool the transformer, so that the heat generated by the transformer can be effectively dissipated, and the heat dissipation efficiency of the wind turbine in the embodiment of the utility model is improved.

On the basis of the above technical solution, optionally, the wind turbine in the embodiment of the present invention also includes a second fan and a second air duct, the second fan is arranged at the lower part of the transformer room, and the air outlet of the second fan is connected to the outlet of the transformer room. Internal communication; one end of the second air duct is connected to the air inlet of the second fan, and the other end of the second air duct extends out of the transformer room. The function of the second fan is to directly draw the cold air in the external environment into the inside of the transformer room through the second air duct. The working principle of the second fan and the second air duct in the wind turbine in the embodiment of the utility model is the same as that in the second embodiment of the utility model. The second fan sucks the cold air into the transformer room, and then the hot air is sucked into the transformer room by the first fan. It is discharged from the transformer room, and the specific process will not be repeated here.

In the embodiment of the utility model, the wind turbine set directly sucks the external cold air into the lower part of the transformer room by setting the second fan, and discharges the hot air from the upper part of the transformer room in combination with the first fan. Therefore, the convection speed of the cold air and the hot air in the transformer room is accelerated, the heat of the transformer is dissipated more effectively, and it is more conducive to improving the heat dissipation efficiency of the wind turbine according to the embodiment of the utility model.

On the basis of the above technical solution, optionally, the second air duct is provided separately from the first air duct. The second air duct is used to suck cold air into the transformer room, while the first air duct is used to discharge the hot air in the transformer room. Therefore, the second air duct and the first air duct are respectively arranged at different positions of the tower. Separate the second air duct from the first air duct.

The wind turbine set in the embodiment of the utility model separates the second air duct from the first air duct, so that the second air duct will not suck the hot air discharged from the first air duct, which is more conducive to improving the wind turbine set in the embodiment of the utility model. cooling efficiency.

On the basis of the above technical solution, optionally, the first fan 1 and/or the second fan 6 is an axial flow fan. The axial flow fan has large flow rate and high efficiency, and has high efficiency under various working conditions. The use of the first fan and the second fan enables faster convection of cold air and hot air in the transformer room, and the axial flow fan is more suitable for the environmental requirements of offshore operations.

In the embodiment of the utility model, the wind turbine sets the first fan and the second fan as axial flow fans to increase the intake of cold air and the discharge of hot air, thereby speeding up the convection of cold air and hot air in the transformer room The speed makes the heat generated by the transformer dissipate faster, which is more conducive to improving the heat dissipation efficiency of the wind turbine in the embodiment of the utility model.

On the basis of the above technical solution, optionally, the wind turbine in the embodiment of the utility model also includes a temperature sensor, the temperature sensor is arranged in the transformer room, and the temperature sensor is electrically connected with the first fan to detect the temperature in the transformer room and control the temperature of the second fan. Start and stop of a fan. The temperature sensor is used to measure the temperature in the transformer room. When the temperature in the transformer room is higher than the maximum ambient temperature required by the transformer, the temperature sensor sends a start signal to the first fan to automatically start the first fan to cool down the transformer; When the temperature in the transformer chamber does not reach the maximum ambient temperature required by the transformer, the temperature sensor sends a stop signal to the first fan to automatically stop the first fan, thereby saving energy.

In the embodiment of the utility model, the cooling device for the transformer of the wind turbine set is equipped with a temperature sensor in the transformer room, and the temperature sensor automatically controls the opening or closing of the first fan without manual operation of the first fan, which reduces the work intensity of workers. At the same time, when the temperature in the transformer chamber does not reach the maximum ambient temperature required by the transformer, the temperature sensor is used to suspend the operation of the first fan, thereby achieving the effect of energy saving.

The wind turbine in the embodiment of the utility model can also be a wind turbine on land, and the utility model does not limit the application environment of the wind turbine.

The wind turbine provided by the embodiment of the utility model, by setting the first fan, discharges the hot air in the transformer room through the first air duct, so that the heat generated by the transformer can be effectively dissipated, and the heat dissipation efficiency of the wind turbine in the embodiment of the utility model is improved . By setting the second blower, the external cold air is directly drawn into the lower part of the transformer room, so that the convection speed of the cold air and hot air in the transformer room is accelerated, and the heat of the transformer is dissipated more effectively, which is more conducive to improving the performance of the utility model embodiment. Cooling efficiency of wind turbines. By separating the second air duct from the first air duct, the second air duct will not inhale the hot air discharged from the first air duct, so that the second air duct inhales cold air from the external environment, which is more beneficial Improve the heat dissipation efficiency of the wind turbine in the embodiment of the utility model. By setting the first fan and the second fan as axial fans, the intake of cold air and the discharge of hot air are increased, the convection speed of cold air and hot air in the transformer room is accelerated, and the heat generated by the transformer Faster radiation is more conducive to improving the heat dissipation efficiency of the wind turbine in the embodiment of the utility model. By arranging a temperature sensor in the transformer room, the first fan is automatically controlled to be turned on or off by the temperature sensor, without manual operation of the first fan, which reduces the work intensity of workers. At the same time, when the temperature in the transformer chamber does not reach the maximum ambient temperature required by the transformer, the temperature sensor is used to suspend the operation of the first fan, thereby achieving the effect of energy saving.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A wind turbine transformer cooling device, characterized in that it comprises: The first fan is arranged in the upper part of the transformer room for installing the transformer in the tower of the wind turbine, and the air inlet of the first fan communicates with the inside of the transformer room; The first air duct, one end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer chamber. 2. The wind turbine transformer cooling device according to claim 1, further comprising: The second fan is arranged in the lower part of the transformer room, and the air outlet of the second fan communicates with the inside of the transformer room; A second air duct, one end of the second air duct is connected to the air inlet of the second fan, and the other end of the second air duct extends out of the transformer chamber. 3. The wind turbine transformer cooling device according to claim 2, characterized in that: The second air duct is set apart from the first air duct. 4. The wind turbine transformer cooling device according to claim 1 or 2, characterized in that: The first fan and/or the second fan is an axial fan. 5. The wind turbine transformer cooling device according to claim 1, further comprising: A temperature sensor is arranged in the transformer chamber, and the temperature sensor is electrically connected to the first fan for detecting the temperature in the transformer chamber and controlling the start and stop of the first fan. 6. A wind turbine, comprising a wind generator, a transformer electrically connected to the wind generator, and a tower for placing the wind generator and the transformer, characterized in that it also includes: The first fan is arranged in the upper part of the transformer room for installing the transformer in the tower, and the air inlet of the first fan communicates with the inside of the transformer room; The first air duct, one end of the first air duct is connected to the air outlet of the first fan, and the other end of the first air duct extends out of the transformer chamber. 7. The wind turbine according to claim 6, further comprising: The second fan is arranged in the lower part of the transformer room, and the air outlet of the second fan communicates with the inside of the transformer room; A second air duct, one end of the second air duct is connected to the air inlet of the second fan, and the other end of the second air duct extends out of the transformer chamber. 8. The wind turbine according to claim 7, characterized in that: The second air duct is set apart from the first air duct. 9. The wind turbine according to claim 6 or 7, characterized in that: The first fan is an axial fan; and/or the second fan is an axial fan. 10. The wind turbine according to claim 6, further comprising: A temperature sensor is arranged in the transformer chamber, and the temperature sensor is electrically connected to the first fan for detecting the temperature in the transformer chamber and controlling the start and stop of the first fan.

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