Self-adaptive heat dissipation equipment of wind driven generator

Abstract

The invention provides self-adaptive heat dissipation equipment of a wind driven generator, and belongs to the technical field of wind driven generator sets. The problem that heat dissipation and energy saving of an existing wind generating set cannot be balanced is solved. The self-adaptive heat dissipation equipment is characterized by comprising a heat dissipation device body and an environment detector, the radiator body comprises a water jacket tightly sleeved on a generator stator shell, a radiating fin group fixed on an outer side bracket of the wind driven generator, a water pipe used for connecting the water jacket and the radiating fin group through water cooling liquid, a water pump used for driving the cooling liquid in the water pipe to circulate, and an exhaust fan arranged on the periphery of the radiating fin group and used for increasing air flow. Compared with the prior art, the self-adaptive heat dissipation equipment has the advantages that the heat dissipation efficiency of the wind driven generator is cooperatively and adaptively adjusted according to the environmental wind power and the environmental temperature, the environmental adaptability is high, and the balance of heat dissipation and energy conservation is high.

Description

Technical Field

[0001] This invention belongs to the technical field of wind turbine generator sets and relates to an adaptive heat dissipation device for wind turbine generators. Background Technology

[0002] While generating wind power, wind turbine generators produce a lot of heat. To ensure the generator operates continuously and stably, it needs to be kept at a suitable operating temperature. Therefore, cooling equipment is required. To improve cooling efficiency, water cooling is the preferred method for wind turbine generators on the market.

[0003] The basic water-cooled structure of a generator is as follows: a cold plate or water jacket made of aluminum or copper is generally used and fitted onto the generator stator housing. Then, a heat sink assembly made of aluminum or copper is exposed on the outside of the wind turbine housing. The heat sink assembly and the cold plate are connected by a water pump and water pipes.

[0004] The basic working process of water cooling for a generator: The water jacket contacts the generator stator housing. When the generator is working, the heat generated is dissipated from its housing and absorbed by the water jacket. Then, after circulating through the water pump and water pipes, the heat absorbed by the water jacket is transferred to the heat sink assembly. The heat sink assembly is exposed to the air to release the heat generated inside the wind turbine to the outside.

[0005] To further improve heat dissipation efficiency, small channels with sufficient coolant flow can be opened in the cold plate and heat sink assembly to further ensure the flow path of the coolant and more comprehensively absorb heat. At the same time, since the heat sink assembly is exposed on the outside to dissipate heat into the air, exhaust fans can be installed around the heat sink assembly to improve the air circulation efficiency around the heat sink assembly, so that the heat sink assembly can more easily dissipate its heat to the outside.

[0006] The power of the water pump and exhaust fan directly affects the heat dissipation efficiency. The faster the water pump rotates, the more efficient the coolant circulation in the pipes, allowing the coolant to exchange heat more quickly, thus dissipating the heat generated by the wind turbine generator from inside the turbine to the outside. The faster the exhaust fan rotates, the greater the airflow around the heat sink assembly, allowing the heat accumulated in the heat sink assembly to be exchanged with the surrounding air more quickly for heat dissipation.

[0007] Therefore, increasing the operating power of water pumps and exhaust fans can improve the heat dissipation efficiency of wind turbines. However, because high power in water pumps and exhaust fans will prevent the achievement of energy-saving benefits, and since wind turbines are designed for power generation and energy storage, continuously using extremely high power for heat dissipation will not achieve energy-saving effects. Therefore, there is an urgent need to develop a radiator that offers a more balanced approach to both heat dissipation and energy saving. Summary of the Invention

[0008] The purpose of this invention is to address the problem that existing wind turbine generators cannot achieve a balance between heat dissipation and energy saving, and to propose an adaptive heat dissipation device for wind turbine generators.

[0009] The objective of this invention can be achieved through the following technical solutions: An adaptive cooling device for a wind turbine is characterized by comprising a radiator body and an environmental detector. The radiator body includes a water jacket tightly fitted onto the stator housing of the generator, a heat sink assembly fixed on the outer support of the wind turbine, a water pipe connecting the water jacket and the heat sink assembly via a water-cooled coolant, a water pump for driving the circulation of the coolant in the water pipe, and an exhaust fan arranged around the heat sink assembly to increase airflow. The environmental detector includes a support fixed on the outside of the wind turbine, a detection shaft freely rotatable on the support via bearings, a detection wheel fixedly fitted on the outer end of the detection shaft, and detection blades symmetrically arranged on the detection wheel. The detection shaft is parallel to the wind turbine shaft, and a transmission shaft is connected to the inner end of the detection shaft. The speed signal output by the transmission shaft is used to control the operation of the water pump and the exhaust fan.

[0010] In the aforementioned adaptive cooling device for a wind turbine, the wind turbine is equipped with a cooling deployment component, which includes a power output section and a signal detection section. The power output section has two sets of power output shafts for driving and controlling the operation of the water pump and exhaust fan. The signal detection section is used to connect with the transmission shaft to receive speed signals. In the aforementioned adaptive cooling device for a wind turbine, the transmission shaft is connected to a gearbox, which has two sets of power output shafts that drive and control the operation of the water pump and the exhaust fan, respectively.

[0011] In the aforementioned adaptive heat dissipation device for a wind turbine, a horizontal support is fixedly mounted on the support, and a detection disc is fixedly mounted on the detection shaft. An environmental deceleration device is mounted on the horizontal support. The environmental deceleration device includes a track fixed on the horizontal support, two sets of frame plates fixedly mounted at both ends of the track, two sets of deceleration plates slidably mounted on the track, and a cavity fixedly mounted in the middle of the track. The two sets of deceleration plates are attached to the bottom edge end faces of the detection disc. A deceleration spring with a spring-like tendency is fixedly mounted between the deceleration plate and the frame plate on the same side. The cavity contains two independent and symmetrical inner cavities. Each inner cavity contains a telescopic block. The telescopic block is fixedly connected to the deceleration plate on the same side. A sealed cavity is formed between the telescopic block and the inner cavity. The sealed cavity is filled with a regulating gas that regulates thermal expansion and contraction.

[0012] In the aforementioned adaptive heat dissipation device for a wind turbine, a reinforcing column is provided between the bottom surface of the horizontal support and the support.

[0013] In the aforementioned adaptive heat dissipation device for a wind turbine, the speed reduction plate is made of a material with high heat resistance, wear resistance, corrosion resistance, and stable friction performance.

[0014] Compared with existing technologies, this adaptive heat dissipation device adjusts the heat dissipation efficiency of the wind turbine in a coordinated manner according to the ambient wind force and ambient temperature, which has strong environmental adaptability and a good balance between heat dissipation and energy saving. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the second structure of the present invention; Figure 3 This is a schematic diagram of the structure of the environmental deceleration device; In the diagram, 1 is the support; 2 is the detection shaft; 3 is the detection wheel; 4 is the detection blade; 5 is the transmission shaft; 6 is the horizontal support; 7 is the detection disc; 8 is the track; 9 is the frame plate; 10 is the deceleration plate; 11 is the cavity; 12 is the deceleration spring; 13 is the telescopic block; and 14 is the reinforcing column. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] The adaptive cooling system of this wind turbine includes the radiator body and an environmental detector.

[0018] The radiator body includes a water jacket tightly fitted onto the generator stator housing, a heat sink assembly fixed on the outer support of the wind turbine generator, a water pipe for connecting the water jacket and the heat sink assembly via water-cooled coolant, a water pump for driving the circulation of coolant in the water pipe, and an exhaust fan installed around the heat sink assembly to increase airflow.

[0019] like Figures 1-2 As shown, the environmental detector includes a support 1 fixed to the outside of the wind turbine, a detection shaft 2 freely rotatable on the support 1 via bearings, a detection wheel 3 fixedly sleeved on the outer end of the detection shaft 2, and detection blades 4 centrally symmetrically arranged on the detection wheel 3. The detection shaft 2 is parallel to the wind turbine shaft (this design is to ensure that the wind turbine and the detection blades 4 of the detection shaft 2 absorb wind force in the same direction, because the stronger the wind, the higher the generator's power generation efficiency, so the detection blades 4 used to detect wind speed will also rotate faster, and in this environment, the rotation speed of the wind turbine and the detection blades 4 are directly proportional). The inner end of the detection shaft 2 is connected to a transmission shaft 5, and the speed signal output by the transmission shaft 5 is used to control the operation of the water pump and the exhaust fan.

[0020] The wind turbine has a heat dissipation unit, which includes a power output section and a signal detection section. The power output section has two sets of power output shafts for driving and controlling the operation of the water pump and exhaust fan. The signal detection section is used to connect with the transmission shaft 5 to receive speed signals. The transmission shaft 5 is connected to a gearbox, which has two sets of power output shafts that drive and control the operation of the water pump and the exhaust fan, respectively.

[0021] The above describes the adaptive environment of the wind force of this invention. The stronger the wind, the higher the power generation efficiency of the wind turbine, and thus the higher the heat generation. This invention uses a detection blade 4 that is in the same direction as the wind turbine's rotor shaft to detect the wind force. The detection wheel 3, after being converted into a power source for the water pump and exhaust fan during operation via a transmission shaft 5 and a gearbox, can also serve as a signal medium to transmit signals to the heat dissipation deployment components, enabling them to drive the water pump and exhaust fan. As long as the wind is stronger and the heat generation is higher, the power obtained by the water pump and exhaust fan will also be higher, which means the heat dissipation effect will be better. This is one of the adaptive environment functions embodied in this invention.

[0022] The transmission shaft 5 can function as a power source to independently drive the water pump and exhaust fan. In this case, the entire environmental detector itself acts as a wind energy source independent of the wind turbine. Alternatively, the transmission shaft 5 can function as a simple detection component, providing speed signals to the heat dissipation deployment components, allowing these components to adjust the power of the water pump and exhaust fan based on the speed signal.

[0023] like Figures 1-3 As shown, a horizontal support 6 is fixedly mounted on the support 1, and a detection disc 7 is fixedly mounted on the detection shaft 2. An environmental deceleration device is mounted on the horizontal support 6. The environmental deceleration device includes a track 8 fixed on the horizontal support 6, two sets of frame plates 9 fixedly mounted at both ends of the track 8, two sets of deceleration plates 10 slidably mounted on the track 8, and a cavity 11 fixedly mounted in the middle of the track 8. The two sets of deceleration plates 10 are attached to the bottom edge end faces of the detection disc 7. A deceleration spring 12 with a spring-like tendency is fixedly mounted between the deceleration plate 10 and the frame plate 9 on the same side. The cavity 11 has two independent and symmetrical inner cavities. Each inner cavity has a telescopic block 13. The telescopic block 13 is fixedly connected to the deceleration plate 10 on the same side. The telescopic block 13 and the inner cavity form a sealed cavity, which is filled with a regulating gas that expands and contracts with temperature.

[0024] The above describes the adaptive environment temperature of this invention. Higher temperatures make it difficult for the heat sink assembly to quickly dissipate heat after contact with hot outside air. Therefore, it is necessary to increase the power of the water pump and exhaust fan to improve the efficiency of the water pump circulating coolant and increase the airflow of the exhaust fan. Conversely, the same principle applies to lower temperatures. The detection process is accomplished by adjusting the expansion and contraction of the gas. When the ambient temperature is high, the gas expands, causing the two side deceleration plates 10 to expand outwards. This reduces the frictional friction between the two side deceleration plates 10 and the central detection disc 7, thus releasing the frictional deceleration constraint on the detection disc 7. Consequently, the braking resistance on the detection disc 7 decreases, allowing the transmission shaft 5 to rotate faster. Conversely, when the ambient temperature is low, the gas contracts, and under the action of the deceleration spring 12, the two side deceleration plates 10 adhere more tightly to the detection disc 7, resulting in a greater braking effect.

[0025] The environmental deceleration device is not an unnecessary component in this invention. If the environmental deceleration device is not installed, the detection shaft 2 will always appear to be at the highest speed under the current air volume. That is, when the environmental detector itself independently acts as a small wind turbine, the power obtained by the water pump and exhaust fan will also be the highest, and there will be no energy waste.

[0026] Actually, this is not the case. In this invention, besides automatically adjusting the transmission shaft 5 according to temperature, the environmental deceleration device also has an important effect: when the environmental detector itself acts as a small wind turbine, the detection blade 4 may break due to excessive rotation speed if left unrestricted in high wind conditions. Therefore, the deceleration plates 10 on both sides of the environmental deceleration device can also act as a limiting component to prevent this from happening. Ingeniously, in the Earth's environment, the temperature is unlikely to be high when a typhoon with high wind speeds arrives. Therefore, in the case of a typhoon with excessive wind force, the deceleration plates 10 on both sides are almost always in a retracted state, thus enabling them to brake in time.

[0027] A reinforcing column 14 is provided between the bottom surface of the horizontal support 6 and the support 1.

[0028] The speed reducer 10 is made of materials with high heat resistance, wear resistance, corrosion resistance and stable friction performance (such as asbestos-free organic materials, sintered metal materials, composite fiber reinforced materials, etc.).

[0029] It should be understood that in the claims and description of this invention, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0030] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An adaptive heat dissipation device for a wind turbine, characterized in that: The device includes a radiator body and an environmental detector. The radiator body includes a water jacket fitted tightly against the generator stator housing, a heat sink assembly fixed on the outer support of the wind turbine, a water pipe connecting the water jacket and the heat sink assembly via a water-cooled coolant, a water pump for driving the circulation of coolant in the water pipe, and an exhaust fan installed around the heat sink assembly to increase airflow. The environmental detector includes a support fixed to the outside of the wind turbine, a detection shaft mounted on the support and rotatably via bearings, a detection wheel fixedly fitted on the outer end of the detection shaft, and detection blades symmetrically arranged on the detection wheel. The detection shaft is parallel to the wind turbine shaft, and a transmission shaft is connected to the inner end of the detection shaft. The speed signal output by the transmission shaft is used to control the operation of the water pump and the exhaust fan.

2. The adaptive heat dissipation device for a wind turbine generator according to claim 1, characterized in that: The wind turbine is equipped with a heat dissipation deployment component, which includes a power output section and a signal detection section. The power output section has two sets of power output shafts for driving and controlling the operation of the water pump and the exhaust fan. The signal detection section is used to connect with the transmission shaft to receive speed signals.

3. The adaptive heat dissipation device for a wind turbine generator according to claim 1, characterized in that: The transmission shaft is connected to a gearbox, which has two sets of power output shafts that drive and control the operation of the water pump and the exhaust fan, respectively.

4. An adaptive heat dissipation device for a wind turbine according to claim 2 or 3, characterized in that: A horizontal support is fixedly mounted on the support, and a detection disc is fixedly mounted on the detection shaft. An environmental deceleration device is mounted on the horizontal support. The environmental deceleration device includes a track fixed on the horizontal support, two sets of frame plates fixed at both ends of the track, two sets of deceleration plates slidably mounted on the track, and a cavity fixedly mounted in the middle of the track. The two sets of deceleration plates are attached to the bottom edge of the detection disc. A deceleration spring with a spring-like tendency is fixed between the deceleration plate and the frame plate on the same side. The cavity contains two independent and symmetrical inner cavities. Each inner cavity contains a telescopic block. The telescopic block is fixedly connected to the deceleration plate on the same side. The telescopic block and the inner cavity form a sealed cavity, which is filled with a regulating gas that expands and contracts with temperature.

5. The adaptive heat dissipation device for a wind turbine according to claim 4, characterized in that: A reinforcing column is provided between the bottom surface of the horizontal support and the support.

6. The adaptive heat dissipation device for a wind turbine according to claim 4, characterized in that: The speed reducer is made of a material with high heat resistance, wear resistance, corrosion resistance and stable friction properties.

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