CN113048028B

CN113048028B - Circulating cooling device for wind power generation

Info

Publication number: CN113048028B
Application number: CN202110473664.XA
Authority: CN
Inventors: 董占武
Original assignee: Zhongshun Yuantong New Energy Group Co ltd
Current assignee: Zhongshun Yuantong New Energy Group Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-10-21
Anticipated expiration: 2041-04-29
Also published as: CN113048028A

Abstract

The invention relates to the technical field of wind power generation. The circulating cooling device for wind power generation comprises a machine cabin arranged on an iron tower, wherein a wind wheel is arranged at the front end of the machine cabin, a wind-collecting cover is fixedly arranged at the upper part of the machine cabin, and an injection channel is defined by the wind-collecting cover and the top surface of the machine cabin; the top of the machine cabin is also provided with a heat dissipation port communicated with the injection channel, and the bottom of the machine cabin is provided with a cold air inlet. The invention can fully utilize high-altitude high-speed airflow to radiate the interior of the cabin, and eject hot air in the cabin, thereby preventing heat accumulation in the cabin, improving the reliability of heat radiation of the cabin, ensuring the stability of the working condition of internal functional equipment and prolonging the service life of the functional equipment.

Description

Circulating cooling device for wind power generation

Technical Field

The invention relates to the technical field of wind power generation, in particular to a circulating cooling device for wind power generation.

Background

The wind power generation is that wind power is used to drive windmill blades to rotate, and then the rotating speed is increased through a speed increaser, so as to promote the generator to generate electricity. Compared with traditional power generation modes such as thermal power generation and nuclear power generation, the wind power generation has the great advantages of cleanness, environmental protection, reproducibility and the like, and the advantages are achieved. In recent years, wind power generation is forming a hot tide around the world. The wind power generation device generally comprises a wind wheel (namely a blade, a main shaft, a yaw mechanism, a pitch control mechanism and the like), a speed increaser, a generator, a control cabinet, a frequency converter, a brake, a yaw mechanism, a pitch control mechanism and the like, and along with the more and more comprehensive functions of the wind power generation set, the additional functional components such as various mechanisms, devices, assemblies and the like are more and more; as is known, a large amount of accumulated heat is generated in the working process of the components, so that the temperature of a machine cabin rises, the normal work and the service life of each component are influenced, and a wind generating set is required to be stopped to cool down or even damaged in severe cases. In order to realize heat dissipation of the machine cabin, an air cooling device is additionally arranged in the machine cabin in a generally adopted mode at present, but the traditional air cooling device is driven by a motor and cannot fully exert the cooling effect of high-altitude air flow; at the same time the motor itself also heats up, which undoubtedly also reduces the overall cooling effect. Therefore, how to efficiently apply high-altitude high-speed wind flow to realize unpowered temperature reduction is a big problem in the field.

Disclosure of Invention

The invention aims to provide a jet-type circulating cooling device for wind power generation, which can efficiently utilize high-altitude wind current.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows: a circulating cooling device for wind power generation comprises a machine cabin arranged on an iron tower, wherein a wind wheel is arranged at the front end of the machine cabin, a wind-collecting cover is fixedly arranged at the upper part of the machine cabin, and an injection channel is defined by the wind-collecting cover and the top surface of the machine cabin; the top of the machine cabin is also provided with a heat dissipation port communicated with the injection channel, and the bottom of the machine cabin is provided with a cold air inlet.

Preferably, the top surface of the machine cabin consists of two sections, and one section close to the wind wheel is higher than one section far away from the wind wheel; the section higher than the top surface of the machine cabin is in downward transition towards the other section in an inclined way to form a back sliding area; the heat dissipation port is arranged in the back sliding area.

Preferably, the heat dissipation opening is in a strip shape extending along the width direction of the machine cabin.

Preferably, each the border that the thermovent is located the upside all is provided with one and follows the fender eaves that thermovent length direction extended, keep off the eaves and extend for the downside slant of thermovent upwards, and two adjacent fender eaves are crisscross each other.

Preferably, a section of the air collecting cover close to the wind wheel extends obliquely upwards towards the direction of the wind wheel, and a horn-shaped air collecting section is formed in the injection passage; the radian of one section of the random bin top surface of the air collecting cover, which is far away from the wind wheel, is bent, and an injection accelerating section is formed in the injection passage.

Preferably, a filter screen is arranged in the air gathering section.

Preferably, a flip bucket is arranged on the top surface of the machine bin opposite to the tail end of the injection channel, the flip bucket extends along the width direction of the injection channel, and one surface of the flip bucket facing the inside of the injection channel is an arc surface extending obliquely upwards; the air collecting cover opposite to the tail end of the injection channel extends upwards along the arc-shaped surface of the flip bucket in an inclined mode.

Preferably, a heat exchange base plate is arranged in the machine cabin, the heat exchange base plate extends along the length direction of the machine cabin, the cross section of the heat exchange base plate is U-shaped, and U-shaped auxiliary heat dissipation air flow channels are formed between the heat exchange base plate and the bottom surface and between the heat exchange base plate and the left side surface and the right side surface of the machine cabin; the bottom of the auxiliary heat dissipation air flow channel is communicated with the cold air inlet, and the upper part of the auxiliary heat dissipation air flow channel extends to the upper part of the machine cabin; the bottom of the heat exchange foundation plate is also provided with a plurality of main heat dissipation air flow through holes which penetrate through the heat exchange foundation plate.

Preferably, the heat exchange base plate consists of an inner plate and an outer plate, the opposite plate surfaces of the inner plate and the outer plate are correspondingly provided with matched heat dissipation grooves extending in a circuitous way, and the heat dissipation grooves on the inner plate and the outer plate jointly enclose a medium flow channel; two ends of the medium flow channel are connected with a radiator fixedly arranged at the tail end of the machine cabin through pipelines to form a circulating cooling loop.

Preferably, the main heat dissipation air flow through holes are strip-shaped and distributed on the heat exchange foundation plate in a matrix shape; the main heat dissipation air flow through holes are arranged between the medium flow channels;

a plurality of guide plates extending along the length direction of the machine cabin are distributed on the outer surfaces of the two sides of the outer layer plate body and the inner surfaces of the two sides of the machine cabin in a staggered manner;

the surface of machine storehouse both sides still is provided with the drainage plate that extends along machine storehouse length direction.

The beneficial effects of the invention are concentrated and expressed as follows: the high-speed airflow that can be abundant utilization height dispels the heat to the machine storehouse is inside, draws the discharge with the inside hot-air in machine storehouse, prevents to appear silt heat in the machine storehouse, has improved the radiating reliability in machine storehouse, has guaranteed the stability of its inside function equipment operating mode, has prolonged the life of function equipment. Specifically, in the use process of the invention, the air collecting cover can collect high-altitude high-speed air flow, the high-speed air flow flows through the injection channel at high speed and is blown out from the tail end, so that the injection channel forms low pressure relative to the interior of the machine cabin, the hot air flow in the machine cabin is injected and discharged by utilizing the low-pressure air flow in the injection channel, the machine cabin is ensured to be always maintained under a low-temperature stable working condition, and the possibility of heat deposition of internal functional equipment is reduced. According to the invention, the traditional air cooling mode of directly carrying out convection blowing is abandoned, and the hot air is discharged in an injection mode, so that the hot air flow in the cabin can be stably and continuously discharged without additionally arranging a prime motor, meanwhile, the direct blowing influence of the external air flow on the inside of the cabin is reduced, and in addition, the dustproof and waterproof treatment can be more conveniently carried out.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of a structure of a cabin;

FIG. 3 isbase:Sub>A view from direction A-A of the structure shown in FIG. 2;

FIG. 4 is a top view of the heat exchange base plate;

FIG. 5 is an enlarged view of portion B of FIG. 2;

fig. 6 is an enlarged view of the portion C in fig. 3.

Detailed Description

As shown in fig. 1 to 6, a circulating cooling device for wind power generation is mainly used for cooling an entire machine cabin 1 of a wind power generation device, ensuring that functional devices inside the machine cabin 1 have stable working conditions, and prolonging the service life of the functional devices. The invention comprises a machine cabin 1 arranged on an iron tower, wherein a wind wheel 2 is arranged at the front end of the machine cabin 1, namely the windward end of the machine cabin 1, namely the left end in figure 2. The upper part of the machine cabin 1 is fixedly provided with a wind-collecting cover 3, and the wind-collecting cover 3 is used for collecting high-altitude high-speed airflow on the top surface of the machine cabin 1 so as to improve the wind speed. An injection passage is defined between the air collecting cover 3 and the top surface of the machine cabin 1, and high-altitude airflow flows in the injection passage. The top of the machine bin 1 is also provided with a heat dissipation port 4 communicated with the injection channel, and the bottom of the machine bin 1 is provided with a cold air inlet 5.

In the use process of the invention, the air collecting cover 3 can collect high-altitude high-speed air flow, the high-speed air flow flows through the injection passage at high speed and is blown out from the tail end, so that the injection passage forms low pressure relative to the interior of the machine cabin 1, and the hot air flow in the machine cabin is injected and discharged by utilizing the low-pressure air flow in the injection passage, thereby ensuring that the machine cabin 1 is always maintained under a low-temperature stable working condition, and reducing the possibility of heat deposition of internal functional equipment. The invention abandons the traditional air cooling mode of directly carrying out convection blowing, but adopts an injection mode to discharge hot air, ensures that hot air flow in the cabin 1 can be stably and continuously discharged under the condition of not additionally arranging a prime motor, simultaneously reduces the direct blowing influence of external air flow on the interior of the cabin 1, and is more convenient for dust-proof and waterproof treatment.

In order to prevent the high-speed airflow from flowing backward into the cabin 1 in the process of flowing in the injection passage, so as to guide water vapor, dust and the like into the cabin 1, the invention can be better implemented by combining fig. 2 and 4, wherein the top surface of the cabin 1 is formed by two sections, and the section close to the wind wheel 2 is higher than the section far away from the wind wheel 2. One section of the machine cabin 1 with a higher top surface is in downward transition towards the other section in an inclined mode to form a back slipping area 6, and the heat dissipation opening 4 is arranged in the back slipping area 6. The design enables the heat dissipation port 4 to face back to the air flow, the air flow can be effectively inhibited from flowing backwards, and the heat dissipation port can play a role of a one-way valve to a certain extent. The specific design form of the heat dissipation opening 4 is many, for example: which may be circular, square, oval, etc. Considering that the housing 1 has a certain width, it is preferably in the shape of a strip extending along the width direction of the housing 1. In order to further improve the effect of inhibiting the airflow from flowing backwards, each edge of the upper side of each heat dissipation opening 4 is provided with a blocking eave 7 extending along the length direction of the heat dissipation opening 4, and the blocking eave 7 extends obliquely upwards relative to the lower side of the heat dissipation opening 4. In addition, in order to avoid condensed water and the like from dropping into the machine cabin 1, two adjacent blocking eaves 7 are staggered with each other.

In order to improve the air gathering effect of the air gathering cover 3, one section of the air gathering cover 3 close to the wind wheel 2 extends obliquely upwards towards the direction of the wind wheel 2, and a horn-shaped air gathering section 8 is formed in the injection passage. The radian of the top surface of a section of the random bin 1, far away from the wind wheel 2, of the wind-collecting cover 3 is bent, and an injection accelerating section 9 is formed in the injection passage. The trumpet-shaped air gathering section 8 can gather more air flows, and the air flow speed is improved through the reduced ejection acceleration section 9, so that a better ejection effect is obtained. In order to prevent large impurities from entering the air converging section 8, a filter screen 10 is arranged in the air converging section 8.

The present invention can be further improved substantially on the basis of such a design to improve the versatility under different wind conditions, and specifically, the air-collecting cover 3 can be designed to be adjustable up and down, for example: generally, the air collecting cover 3 is directly fixed with the machine bin 1, and the adjustable method is that the two sides of the machine bin 1 are provided with the slide ways, the air collecting cover 3 is correspondingly provided with the slide blocks, the air collecting cover 3 is driven to move in the up-and-down direction through a linear motor, a screw nut pair and the like, and then the size of the injection accelerating section 9 can be changed, so that the airflow speed is changed. When the high-altitude air flow is small, the air collecting cover 3 can move downwards, and the size of the injection accelerating section 9 is reduced, so that the flow speed is improved, and the injection force is increased. When the high-altitude air flow is large, the air collecting cover can move upwards properly due to sufficient injection force, and the size of the injection accelerating section 9 is increased, so that the injection force is properly reduced, and excessive air flow impact in the machine cabin 1 is avoided.

After hot air is injected and discharged from the machine cabin 1, in order to enable the hot air to be far away from the machine cabin 1 as much as possible and avoid secondary interference to the machine cabin 1, the top surface of the machine cabin 1 opposite to the tail end of the injection channel is provided with a deflecting bucket 11, the deflecting bucket 11 extends along the width direction of the injection channel, and one surface of the deflecting bucket 11 facing the inside of the injection channel is an arc surface extending upwards in an inclined mode. The air-collecting cover 3 opposite to the tail end of the injection channel extends upwards along the arc-shaped surface of the flip bucket 11. The flip bucket 11 can be installed alone on the top surface of the machine storehouse 1, also can be formed by the top surface bending of machine storehouse 1, throws through the 11 driving of flip bucket to choose the air current from the machine storehouse 1.

In addition, a heat exchange base plate 12 is arranged in the machine cabin 1, the heat exchange base plate 12 is made of high heat conduction materials such as aluminum alloy and copper, the heat exchange base plate 12 extends along the length direction of the machine cabin 1, the cross section of the heat exchange base plate 12 is U-shaped, and U-shaped auxiliary heat dissipation air flow channels 13 are formed between the heat exchange base plate 12 and the bottom surface, the left side surface and the right side surface of the machine cabin 1. The bottom of the auxiliary heat dissipation air flow channel 13 is communicated with the cold air inlet 5, and the upper part of the auxiliary heat dissipation air flow channel 13 extends to the upper part of the machine cabin 1. The bottom of the heat exchange base plate 12 is also provided with a number of main cooling air flow through holes 14 that run through the heat exchange base plate 12. The air flow path is divided into two parts by the arranged heat exchange base plate 12, one part flows along the edge of the machine cabin 1, namely flows in the auxiliary heat dissipation air flow channel 13, and the other part flows in the machine cabin 1, namely flows into the main space in the machine cabin 1 through the main heat dissipation air flow through hole 14. By adopting the arrangement, cold air can be effectively prevented from being too concentrated after entering, and the whole radiating effect is improved.

In addition, on the basis of the above, the present invention is further provided with a circulation cooling circuit, specifically, the heat exchange base plate 12 is composed of an inner plate 15 and an outer plate 16, the opposite plate surfaces of the inner plate 15 and the outer plate 16 are correspondingly provided with matched heat dissipation grooves extending in a circuitous manner, and the heat dissipation grooves on the inner plate 15 and the outer plate 16 jointly enclose a medium flow channel 17. Two ends of the medium flow channel 17 are connected with a radiator 18 fixedly arranged at the tail end of the machine cabin 1 through pipelines to form a circulating cooling loop, and heat is taken out to the radiator 18 through a cooling medium in the circulating cooling loop for heat exchange. The mode of air cooling and liquid cooling combination improves the overall heat dissipation efficiency.

As shown in fig. 4, the primary heat dissipation air flow through holes 14 are in the shape of bars and are distributed in a matrix on the heat exchange base plate 12, and the primary heat dissipation air flow through holes 14 are disposed between the medium flow channels 17 to avoid interference with the medium flow channels 17. As shown in fig. 6, a plurality of flow deflectors 19 extending along the length direction of the housing 1 are alternately distributed on the outer surface of the two sides of the outer plate 16 and the inner surface of the two sides of the housing 1, so as to prolong the air flow stroke, increase the heat exchange area and improve the heat exchange efficiency. The surface of cabin 1 both sides still is provided with the drainage plate 20 along the extending of cabin 1 length direction, further improves the convection current condition of air current in cabin 1 both sides.

Claims

1. The utility model provides a circulative cooling device for wind power generation, is including installing cabin (1) on the iron tower, cabin (1) front end sets up wind wheel (2), its characterized in that: the upper part of the machine cabin (1) is fixedly provided with a wind-collecting cover (3), and an injection channel is enclosed between the wind-collecting cover (3) and the top surface of the machine cabin (1); the top of the machine bin (1) is also provided with a heat dissipation port (4) communicated with the injection channel, and the bottom of the machine bin (1) is provided with a cold air inlet (5);

the top surface of the machine cabin (1) is composed of two sections, and one section close to the wind wheel (2) is higher than one section far away from the wind wheel (2); the section higher than the top surface of the machine cabin (1) is in downward transition towards the other section in an inclined way to form a back sliding area (6); the heat dissipation port (4) is arranged in the back sliding area (6).

2. The circulating cooling apparatus for wind power generation according to claim 1, wherein: the heat dissipation port (4) is in a strip shape extending along the width direction of the machine bin (1).

3. The circulating cooling device for wind power generation according to claim 2, wherein: each edge that thermovent (4) are located the upside all is provided with one and keeps off eaves (7) that extend along thermovent (4) length direction, keep off eaves (7) and extend for the downside slant of thermovent (4) upwards, and two adjacent fender eaves (7) are crisscross each other.

4. The circulating cooling device for wind power generation according to claim 3, wherein: a section of the air collecting cover (3) close to the wind wheel (2) extends upwards in an inclined mode towards the direction of the wind wheel (2), and a horn-shaped air collecting section (8) is formed in the injection channel; the radian of the top surface of one section of the random bin (1) of the air collecting cover (3) far away from the wind wheel (2) is bent, and an injection accelerating section (9) is formed in the injection channel.

5. The circulating cooling device for wind power generation according to claim 4, wherein: and a filter screen (10) is arranged in the air gathering section (8).

6. The circulating cooling apparatus for wind power generation according to claim 5, wherein: a flip bucket (11) is arranged on the top surface of the machine bin (1) opposite to the tail end of the injection channel, the flip bucket (11) extends along the width direction of the injection channel, and one surface, facing the inside of the injection channel, of the flip bucket (11) is an arc surface extending obliquely upwards; the air-collecting cover (3) opposite to the tail end of the injection channel extends upwards along the arc-shaped surface of the flip bucket (11) in an inclined mode.

7. The circulating cooling device for wind power generation according to claim 6, wherein: a heat exchange base plate (12) is arranged in the machine cabin (1), the heat exchange base plate (12) extends along the length direction of the machine cabin (1), the cross section of the heat exchange base plate (12) is U-shaped, and U-shaped auxiliary heat dissipation air flow channels (13) are formed between the heat exchange base plate (12) and the bottom surface and the left and right side surfaces of the machine cabin (1); the bottom of the auxiliary heat dissipation air flow channel (13) is communicated with the cold air inlet (5), and the upper part of the auxiliary heat dissipation air flow channel (13) extends to the upper part of the machine cabin (1); the bottom of the heat exchange base plate (12) is also provided with a plurality of main heat dissipation air flow through holes (14) which penetrate through the heat exchange base plate (12).

8. The circulating cooling device for wind power generation according to claim 7, wherein: the heat exchange base plate (12) is composed of an inner layer plate (15) and an outer layer plate (16), wherein the opposite plate surfaces of the inner layer plate (15) and the outer layer plate (16) are correspondingly provided with matched heat dissipation grooves extending in a circuitous manner, and the heat dissipation grooves on the inner layer plate (15) and the outer layer plate (16) jointly enclose a medium flow channel (17); two ends of the medium flow channel (17) are connected with a radiator (18) fixedly arranged at the tail end of the machine cabin (1) through a pipeline to form a circulating cooling loop.

9. The circulating cooling apparatus for wind power generation according to claim 8, wherein: the main heat dissipation air flow through holes (14) are strip-shaped and distributed on the heat exchange base plate (12) in a matrix shape; the primary heat dissipation air flow through holes (14) are arranged between the medium flow channels (17);

a plurality of guide plates (19) extending along the length direction of the machine cabin (1) are distributed on the outer surfaces of the two sides of the outer plate (16) body and the inner surfaces of the two sides of the machine cabin (1) in a staggered manner;

the outer surfaces of two sides of the machine bin (1) are also provided with drainage plates (20) extending along the length direction of the machine bin (1).