CN116201703A - Inside overheat protection device of wind power generation - Google Patents

Abstract

The invention relates to the technical field of protection devices for wind power generation, and discloses an internal overheating protection device for wind power generation, which includes a nacelle, the nacelle is provided with a hub, the inner wall of the hub is fixedly sleeved with one end of a transmission shaft, and the transmission The other end of the shaft moves through to the inside of the engine room, and the engine room is provided with a cooling mechanism, and the cooling mechanism includes a spur gear 1, a rotating rod 1, a spur gear 2, a cooling fan, a hood, a cooling hole 1, and a cooling hole 2, The spur gear one is fixedly sleeved on the outer wall of the through end of the transmission shaft, and the two ends of the rotating rod one are respectively rotatably connected to the inner wall front and the inner wall back of the nacelle through bearings. The transmission shaft rotates to drive the spur gear 1, thereby meshing the spur gear 2 to drive the rotating rod 1 to rotate, and to drive the cooling fan to rotate, so that the temperature and heat in the cabin are discharged from the cooling hole 2 to the cooling hole 1 at an accelerated rate, reducing the temperature rise in the cabin. Improve the service life of the generator set.

Description

An internal overheat protection device for wind power generation

technical field

The invention relates to the technical field of protection devices for wind power generation, in particular to an internal overheating protection device for wind power generation.

Background technique

Wind power refers to converting the kinetic energy of wind into electrical energy. Wind is a kind of energy without pollution. It is very environmentally friendly to use wind power to generate electricity, and it can generate huge electric energy. Therefore, more and more countries pay more attention to wind power generation. Existing wind power generation equipment is generally installed outdoors. The equipment box will overheat during use, and common cooling protection methods are inefficient and consume high energy consumption.

According to the Chinese Patent Publication No. CN114060241A, this patent provides an internal overheating protection device for wind power generation, which includes a main body of the power generation device. A fixed baffle is fixedly installed inside the main body of the power generation device. The upper part of the generator set is rotatably connected with a power generating wind blade, the outside of the power generating wind blade is fixedly connected with a limiting column, and a card slot is opened on the limiting column, and the inner top of the main body of the power generating device is provided with a stopper. The brake device includes a fixed frame, and a brake rod is arranged inside the fixed frame, and the push rod drives the extrusion plate to squeeze the elastic bag, and the elastic bag will pass the internal gas through the elastic bag when it is squeezed by the extrusion plate. The air duct is discharged from the power generation device. When the elastic bag is not squeezed and starts to expand, the hot air distributed around the generator set is sucked into the elastic bag through the ventilation pipe, thereby accelerating the air circulation around the generator set and further accelerating the heat dissipation of the generator set. The solenoid is energized to generate magnetic attraction to the iron piece, so that the iron piece drives the brake lever to move towards the direction of the generator fan blade. When the brake lever moves towards the direction of the generator fan blade, it will enter the slot on the limit column. As a result, the generating fan blades are braked urgently, and the rotation of the generating fan blades is stopped under high temperature conditions, thereby reducing the loss of the generating set.

Wind turbines will generate a lot of heat when generating electricity. If the wind turbine continues to work when it is overheated, it will damage the components of the device and reduce the service life of the generator.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the invention provides an internal overheat protection device for wind power generation.

(2) Technical solution

In order to achieve the above object, the present invention provides the following technical solutions: an internal overheat protection device for wind power generation, including a nacelle, the nacelle is provided with a hub, the inner wall of the hub is fixedly sleeved with one end of a transmission shaft, and the transmission shaft The other end of the movable penetrating to the interior of the cabin, the cabin is provided with a heat dissipation mechanism, and the heat dissipation mechanism includes spur gear 1, rotating rod 1, spur gear 2, cooling fan, hood, cooling hole 1, cooling hole 2;

The spur gear 1 is fixedly sleeved on the outer wall of the through end of the transmission shaft, the two ends of the rotating rod 1 are respectively connected to the inner wall front and the inner wall back of the nacelle through bearings, and the spur gear 2 is fixedly sleeved on the rotating rod 1 and meshes with the spur gear one, the rear end of the rotating rod one continues to penetrate to the back of the outer wall of the nacelle, and continues to extend backward, the cooling fan is fixedly sleeved on the outer wall of the extension end of the rotating rod one, and the hood It is fixedly installed on the back of the outer wall of the nacelle, and covers the cooling fan. The number of the first cooling holes is five, and they are sequentially opened on the back of the hood. The number of the second cooling holes is two, and they are sequentially opened in the cabin. The back side, and communicate with the heat dissipation holes through the hood.

Preferably, a hanging plate is fixedly installed on the top of the inner wall of the nacelle, and a rotating hole is opened on the side of the hanging plate away from the top of the inner wall of the nacelle, a cooling mechanism is arranged on the hanging plate, and the cooling mechanism includes a rotating rod two, an inclined Gear 1, helical gear 2, spur gear 3, rotating shaft, spur gear 4, toothed belt, induction protection device. The hanging plate is used for suspending the second rotating rod, and the rotation stability of the second rotating rod is maintained.

Preferably, the middle part of the rotating rod 2 is rotatably connected to the inner wall of the rotating hole through a bearing, the rear end of the rotating rod 2 is rotatably connected to the left side of the inner wall of the nacelle through a bearing, and the helical gear 1 is fixedly sleeved on the rotating rod The front end outer wall of the second, the second helical gear is fixedly sleeved on the outer wall of the rotating rod one, and meshed with the helical gear one, the third spur gear is fixedly sleeved on the rear end outer wall of the rotating rod two, and one end of the rotating shaft passes through The bearing is rotatably connected to the left side of the inner wall of the nacelle, and the four spur gears are fixedly sleeved on the outer wall of the other end of the rotating shaft. The four gears are connected through a toothed belt transmission, and the induction protection device is fixedly installed on the top of the outer wall of the toothed belt. It moves around through the meshing transmission of the toothed belt, and drives the induction protection device to move together to monitor the temperature.

Preferably, the induction protection device includes a temperature sensor and a controller, the controller is provided with a central processing unit, the temperature sensor is provided with a sensing module, and the signal terminal of the central processing unit is connected to a wireless control module , the signal end of the sensing module is unidirectionally connected to the signal end of the wireless control module. When the local temperature exceeds the upper threshold of the sensing module in the temperature sensor, the sensing module will transmit the signal to the wireless control module in the central processing unit.

Preferably, a refrigerating device is provided in the engine room, and the refrigerating device includes a chassis, a refrigerating sheet, an air outlet, and a cooling outlet, the casing is fixedly installed on the back of the inner wall of the cabin, and the refrigerating sheet is fixedly installed inside the casing The air outlet is set on the front of the case, and the heat dissipation port is set on the back side of the case, and is communicated with the second heat dissipation hole. The cold air generated by the refrigerating sheet is discharged into the cabin from the air outlet to cool down, so as to avoid overheating in the cabin, and the heat generated by the replacement of the refrigerating sheet is discharged from the cooling outlet to the second cooling hole.

Preferably, a switch module is arranged inside the refrigerating sheet, and the signal terminal of the wireless control module is connected to the signal terminal of the switch module in a unidirectional signal manner. The switch module is controlled by the wireless control module, so as to turn on or off the refrigerating sheet in the refrigerating device.

Preferably, a cover is fixedly installed on the back of the nacelle, a tower is connected to the bottom of the nacelle, a wind power generation device is fixedly installed in the nacelle, and the penetrating end of the transmission shaft is set on the wind power generation device. By setting the wind power generation device, it actually includes a gearbox, a generator, a drive shaft, a control cabinet, a chassis, etc., all of which belong to the basic components of wind power generation in the prior art.

Preferably, a rain gutter is fixedly installed on the top of the cabin, and both sides of the bottom of the rain gutter are connected to one end of a drainpipe. There are two drainpipes, and they are all continuous bending structures. , the other ends of the two drain pipes are respectively fixedly installed on the left side of the outer wall and the right side of the outer wall of the nacelle, and extend downward to both sides of the bottom of the outer wall of the nacelle and both sides of the outer wall of the tower. By setting the rainwater in rainy days, the rainwater continues to pass through both sides of the outer wall of the engine room along the drainage pipe, and is discharged to the ground along the tower.

(3) Beneficial effects

Compared with the prior art, the present invention provides an internal overheat protection device for wind power generation, which has the following beneficial effects:

1. The internal overheating protection device of wind power generation drives the spur gear 1 through the rotation of the transmission shaft, thereby meshing with the spur gear 2 to drive the rotating rod 1 to rotate, and drives the cooling fan to rotate, so that the temperature and heat in the cabin are transferred from the cooling hole 2 to the cooling hole One is to accelerate the discharge, reduce the temperature rise rate in the cabin, and improve the service life of the generator set.

2. The internal overheating protection device of wind power generation drives the helical gear 1 to rotate through the helical gear 2 during the first rotation of the rotating rod, and at the same time makes the rotating rod 2 drive the spur gear 3 to drive the spur gear 4 to rotate, so that the toothed belt can move around Drive the induction protection device to move together, and carry out mobile monitoring of the temperature in the area where each electromechanical machine is located in the engine room. When the local temperature exceeds the upper limit threshold of the induction module in the temperature sensor, the refrigeration device starts and cools down the cabin through the cooling plate to avoid overheating damage Device components.

3. This kind of internal overheating protection device of wind power generation, the rainwater enters the rain trough to store up in rainy days, and continues along the drain pipe to pass through both sides of the outer wall of the cabin. The continuous bending structure of the drain pipe increases the residence time of the water flow on the outer wall of the cabin. The low-temperature rainwater can continuously absorb heat on the outer wall of the cabin, reducing the heat accumulation inside the cabin.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a perspective view of the present invention;

Fig. 2 is the internal sectional view of the cabin of the present invention and the structural representation of heat dissipation mechanism and cooling mechanism;

Fig. 3 is the structural representation of heat dissipation mechanism and cooling mechanism of the present invention;

Fig. 4 is the internal sectional view of nacelle of the present invention;

Fig. 5 is the rear view of nacelle of the present invention and the sectional view of cover;

Figure 6 is a rear view of the nacelle and a sectional view of the hood of the present invention.

In the figure: 1, engine room; 2, wheel hub; 3, transmission shaft; 4, cooling mechanism; 401, spur gear one; 402, rotating rod one; 403, spur gear two; 404, cooling fan; 405, hood; 406 1, cooling hole 1; 407, cooling hole 2; 5, hanging plate; 6, cooling mechanism; 601, rotating rod 2; 602, helical gear 1; 603, helical gear 2; 604, spur gear 3; 605, rotating shaft; 606 , spur gear four; 607, toothed belt; 608, induction protection device; 7, refrigeration device; 8, mask; 9, tower; 10, rain gutter; 11, drainage pipe;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Embodiment one

As shown in Figures 1-6, the present invention provides an internal overheating protection device for wind power generation, including a nacelle 1, a hub 2 is arranged on the nacelle 1, and one end of a transmission shaft 3 is fixedly sleeved on the inner wall of the hub 2, and the transmission shaft 3 The other end of the motor runs through to the inside of the nacelle 1. A cooling mechanism 4 is provided in the nacelle 1, and the cooling mechanism 4 includes a spur gear 1 401, a rotating rod 402, a spur gear 2 403, a cooling fan 404, a hood 405, and cooling holes. One 406, heat dissipation hole two 407, the spur gear one 401 is fixedly sleeved on the through end outer wall of the transmission shaft 3, the two ends of the rotating rod one 402 are connected to the inner wall front and the inner wall back of the nacelle 1 through bearing rotation respectively, the spur gear two 403 It is fixedly sleeved on the outer wall of the rotating rod 1 402 and meshed with the spur gear 1 401. The rear end of the rotating rod 1 402 continues to penetrate to the back of the outer wall of the cabin 1 and continues to extend backward. The cooling fan 404 is fixedly sleeved on the rotating rod The outer wall of the extended end of one 402, the machine cover 405 is fixedly installed on the outer wall back of the nacelle 1, and covers the cooling fan 404, the number of cooling holes one 406 has five, and is opened in the back of the machine cover 405 successively, and the cooling hole two 407 There are two of them, and they are arranged on the back side of the nacelle 1 in turn, and communicated with the cooling hole 1 406 through the hood 405 .

In this embodiment, the first spur gear 401 is driven by the rotation of the transmission shaft 3, thereby engaging the second spur gear 403 to drive the rotation rod one 402 to rotate, and to drive the cooling fan 404 to rotate, so that the temperature and heat in the cabin 1 are dissipated from the second cooling hole 407 to the heat dissipation Hole one 406 accelerates the discharge, reduces the temperature rise rate in the cabin, and improves the service life of the generator set.

Embodiment two

As shown in Figures 1, 2, 3, 4, and 6, on the basis of Embodiment 1, the present invention provides a technical solution: preferably, a hanging plate 5 is fixedly installed on the top of the inner wall of the nacelle 1, and the hanging plate 5 is far away from One side of the top of the inner wall of the nacelle 1 is provided with a rotating hole, and the hanging plate 5 is used to hang the rotating rod 2 601 and maintain the rotation stability of the rotating rod 2 601. The hanging plate 5 is provided with a cooling mechanism 6, and the cooling mechanism 6 includes Rotating rod two 601, helical gear one 602, helical gear two 603, spur gear three 604, rotating shaft 605, spur gear four 606, toothed belt 607, induction protection device 608, the middle part of rotating rod two 601 is connected in the rotating hole by bearing rotation The inner wall of the rotating rod 2 601, the rear end of the rotating rod 601 is connected to the left side of the inner wall of the nacelle 1 through bearing rotation, the helical gear 1 602 is fixedly sleeved on the front end outer wall of the rotating rod 2 601, and the helical gear 2 603 is fixedly sleeved on the rotating rod 1 402 and meshes with helical gear 1 602, spur gear 3 604 is fixedly sleeved on the rear end outer wall of rotating rod 2 601, and one end of rotating shaft 605 is connected to the left side of the inner wall of nacelle 1 through bearing rotation, and spur gear 4 606 is fixedly sleeved Set on the outer wall of the other end of the rotating shaft 605, the two sides of the inner wall of the toothed belt 607 mesh with the spur gear 3 604 and the spur gear 4 606 respectively, the spur gear 3 604 and the spur gear 4 606 are connected through the toothed belt 607, and the induction protection device 608 Fixedly installed on the top of the outer wall of the toothed belt 607, the toothed belt 607 meshes with the drive to move around, and drives the induction protection device 608 to move together to monitor the temperature. The induction protection device 608 includes a temperature sensor and a controller. The controller is equipped with a central processing unit. The sensor is equipped with a sensing module, the signal terminal of the central processing unit is connected to the wireless control module, and the signal terminal of the sensing module is connected to the signal terminal of the wireless control module in a one-way signal connection. When the local temperature exceeds the upper limit of the threshold of the sensing module in the temperature sensor , the sensing module will transmit the signal to the wireless control module in the central processing unit, the engine room 1 is provided with a cooling device 7, and the cooling device 7 includes a chassis, a cooling plate, an air outlet, and a heat dissipation port, and the chassis is fixedly installed on the inner wall of the engine room 1 On the back, the refrigerating plate is fixedly installed inside the case, the air outlet is set on the front of the case, the heat dissipation port is set on the back of the case, and is connected with the heat dissipation hole 2 407, and the cold air generated by the refrigerating plate is discharged into the cabin 1 from the air outlet to cool down , to avoid overheating in the cabin, the heat generated by the replacement of the cooling plate is discharged from the heat dissipation port to the heat dissipation hole 2 407, a switch module is arranged in the cooling plate, the signal terminal of the wireless control module is connected to the signal terminal of the switch module in a one-way signal, and the wireless control module The switch module is controlled to open or close the refrigerating sheet in the refrigerating device 7 .

In this embodiment, the helical gear 2 603 drives the helical gear 1 602 to rotate during the rotation of the rotating rod 1 402, and at the same time, the rotating rod 2 601 drives the spur gear 3 604 to mesh with the driving spur gear 4 606 to rotate, so that the toothed belt 607 is circling The movement drives the induction protection device 608 to move together to monitor the temperature of each electromechanical area in the engine room 1. When the local temperature exceeds the upper limit threshold of the induction module in the temperature sensor, the refrigeration device 7 starts and cools down the cabin through the cooling sheet , to avoid damage to device components due to overheating.

Embodiment three

As shown in Figures 1, 5, and 6, on the basis of Embodiment 1, the present invention provides a technical solution: preferably, a cover 8 is fixedly installed on the back of the nacelle 1, and a tower 9 is connected to the bottom of the nacelle 1 , a wind power generator 12 is fixedly installed in the nacelle 1, and the penetrating end of the transmission shaft 3 is arranged on the wind power generator 12. The wind power generator 12 actually includes a gearbox, a generator, a drive shaft, a control cabinet, a chassis, etc., all of which belong to The basic components of wind power generation in the prior art, the top of the nacelle 1 is fixedly equipped with a rain gutter 10, and both sides of the bottom of the rain gutter 10 are connected to one end of the drain pipe 11. There are two drain pipes 11, and each It is a continuous bending structure, and the other ends of the two drain pipes 11 are respectively fixedly installed on the left side and right side of the outer wall of the nacelle 1, and extend downwards to both sides of the bottom of the outer wall of the nacelle 1 and to both sides of the outer wall of the tower 9 respectively. In rainy days, rainwater passes through both sides of the outer wall of the cabin 1 along the drain pipe 11, and is discharged to the ground along the tower 9.

In this embodiment, the rainwater enters the rain tank 10 to accumulate in rainy days, and continues to pass through both sides of the outer wall of the cabin 1 along the drain pipe 11. The continuous bending structure of the drain pipe 11 increases the residence time of the water flow on the outer wall surface of the cabin 1, and promotes The low-temperature rainwater can continuously absorb heat on the outer wall of the nacelle 1, reducing heat accumulation inside the nacelle 1.

The working principle of the internal overheat protection device for wind power generation will be described in detail below.

As shown in Figures 1-6, when in use, the wind power generation device 12 actually includes a gearbox, a generator, a drive shaft, a control cabinet, a chassis, etc., all of which are basic components of wind power generation in the prior art, and will not be drawn in detail in this case. And the principle of power generation will not be described in detail. When the wind blows the fan blades, the hub 2 is driven to rotate on the nacelle 1, and the transmission shaft 3 is driven to rotate to drive the gear box in the wind power generation device 12, and the gear box speeds up the transmission of the generator. To achieve the effect of wind power generation, at the same time, during the rotation of the transmission shaft 3, the spur gear 1 401 is driven to rotate at the same time, thereby meshing with the spur gear 2 403 to generate rotation, prompting the spur gear 2 403 to drive the rotating rod 1 402 to rotate and drive the cooling fan 404 to continue Rotate, because the size of the spur gear 2 403 is smaller than the size of the spur gear 1 401, the rotating speed of the cooling fan 404 is faster than that of the transmission shaft 3, and then the cooling fan 404 can suck the heat generated by the internal electromechanical of the cabin 1, and make the The heat is discharged to the outside of the first cooling hole 406 along the cooling hole two 407. The machine cover 405 is used to protect the cooling fan 404 from pollution and damage caused by outdoor operations. Blocked on the outer wall of the cover 8 to avoid penetration into the hood 405, the tower 9 is used as the main structure supporting the nacelle 1, and is one of the basic components of the wind power generator. In rainy days, rainwater enters the rain trough 10 to accumulate, and along the drain pipe 11 continues to pass through both sides of the outer wall of the nacelle 1, and discharges along the tower 9 to the ground. The continuous bending structure of the drain pipe 11 increases the residence time of the water flow on the outer wall of the nacelle 1, and promotes the continuous absorption of low-temperature rainwater on the outer wall of the nacelle 1. heat, reduce the internal heat accumulation of the cabin 1, during the rotation of the first rotating rod 402, the second helical gear 603 drives the first helical gear 602 to rotate, and at the same time drives the second rotating rod 601 to rotate, the hanging plate 5 is used to hang the second rotating rod 601, And keep the rotation stability of the rotating rod 2 601, the rotating rod 2 601 drives the spur gear 3 604 to rotate, and drives the spur gear 4 606 to rotate through the meshing of the toothed belt 607, prompting the toothed belt 607 to move around and drive the induction protection device during the movement 608 moves together, and continuously monitors the temperature of each electromechanical area in the engine room 1. When the local temperature exceeds the upper limit threshold of the sensing module in the temperature sensor, the sensing module will transmit the signal to the wireless control in the central processing unit. module, and make the wireless control module control the switch module, so as to open the refrigerating sheet in the refrigerating device 7, the cold air generated by the refrigerating sheet is discharged into the engine room 1 from the air outlet to cool down, so as to avoid overheating in the cabin, and the heat generated by the replacement of the refrigerating sheet is released from the cooling port Discharge to the cooling hole 2 407, when the temperature in the cabin is stable within the limited threshold range of the temperature sensor, the sensor module transmits a signal to the wireless control module, and controls the switch module to turn off the refrigeration device 7.

Claims (8)

1. An internal overheating protection device for wind power generation, comprising a nacelle (1), characterized in that: the nacelle (1) is provided with a hub (2), and the inner wall of the hub (2) is fixedly sleeved with a transmission shaft ( 3), and the other end of the drive shaft (3) moves through to the inside of the nacelle (1), the nacelle (1) is provided with a heat dissipation mechanism (4), and the heat dissipation mechanism (4) includes a spur gear (401), rotating rod one (402), spur gear two (403), cooling fan (404), machine cover (405), cooling hole one (406), cooling hole two (407); The spur gear 1 (401) is fixedly sleeved on the outer wall of the through end of the transmission shaft (3), and the two ends of the rotating rod 1 (402) are respectively connected to the front and back of the inner wall of the nacelle (1) through bearings. The spur gear 2 (403) is fixedly sleeved on the outer wall of the rotating rod 1 (402), and meshes with the spur gear 1 (401), and the rear end of the rotating rod 1 (402) continues to penetrate to the back of the outer wall of the cabin (1) , and continue to extend backwards, the cooling fan (404) is fixedly sleeved on the outer wall of the extension end of the rotating rod one (402), the hood (405) is fixedly installed on the back of the outer wall of the cabin (1), and covers For the heat dissipation fan (404), there are five heat dissipation holes (406), which are sequentially opened on the back of the machine cover (405), and the number of the second heat dissipation holes (407) is two, which are sequentially opened on the The back of the nacelle (1) is communicated with the cooling hole one (406) through the machine cover (405). 2. The internal overheating protection device for wind power generation according to claim 1, characterized in that: the top of the inner wall of the nacelle (1) is fixed with a hanging plate (5), and the hanging plate (5) is far away from the nacelle (1) ) on one side of the top of the inner wall is provided with a rotating hole, and the hanging plate (5) is provided with a cooling mechanism (6), and the cooling mechanism (6) includes rotating rod two (601), helical gear one (602), helical Gear two (603), spur gear three (604), rotating shaft (605), spur gear four (606), toothed belt (607), induction protection device (608). 3. An internal overheating protection device for wind power generation according to claim 2, characterized in that: the middle part of the second rotating rod (601) is connected to the inner wall of the rotating hole through a bearing, and the second rotating rod (601) The rear end of the shaft is connected to the left side of the inner wall of the nacelle (1) through a bearing, the helical gear 1 (602) is fixedly sleeved on the front end outer wall of the rotating rod 2 (601), and the helical gear 2 (603) is fixedly sleeved On the outer wall of the rotating rod one (402), and meshed with the helical gear one (602), the third spur gear (604) is fixedly sleeved on the outer wall of the rear end of the rotating rod two (601), and the rotating shaft (605) One end is rotatably connected to the left side of the inner wall of the nacelle (1) through bearings, the spur gear four (606) is fixedly sleeved on the outer wall of the other end of the rotating shaft (605), and the two sides of the inner wall of the toothed belt (607) are respectively connected to the positive The third gear (604) and the fourth spur gear (606) mesh, the third spur gear (604) and the fourth spur gear (606) are connected through a toothed belt (607), and the induction protection device (608) is fixedly installed on The top of the outer wall of the toothed belt (607). 4. An internal overheat protection device for wind power generation according to claim 3, characterized in that: the induction protection device (608) includes a temperature sensor and a controller, and a central processing unit is set in the controller, and the The temperature sensor is provided with a sensing module, the signal terminal of the central processing unit is connected to the wireless control module, and the signal terminal of the sensing module is connected to the signal terminal of the wireless control module in a unidirectional signal. 5. An internal overheating protection device for wind power generation according to claim 4, characterized in that: a refrigeration device (7) is provided in the nacelle (1), and the refrigeration device (7) includes a chassis, a refrigeration sheet, an outlet The air outlet, the heat dissipation port, the chassis is fixedly installed on the back of the inner wall of the engine room (1), the cooling plate is fixedly installed inside the chassis, the air outlet is opened on the front of the chassis, the heat dissipation opening is opened on the back of the chassis, and It is set in communication with the second cooling hole (407). 6. An internal overheating protection device for wind power generation according to claim 5, characterized in that: a switch module is arranged in the cooling plate, and the signal terminal of the wireless control module is connected to the signal terminal of the switch module in a unidirectional signal . 7. The internal overheating protection device for wind power generation according to claim 1, characterized in that: a cover (8) is fixedly installed on the back of the nacelle (1), and the bottom of the nacelle (1) is communicated with a A tower frame (9), a wind power generation device (12) is fixedly installed in the nacelle (1), and a penetrating end of the transmission shaft (3) is arranged on the wind power generation device (12). 8. An internal overheating protection device for wind power generation according to claim 7, characterized in that: the top of the nacelle (1) is fixed with a rain groove (10), and the bottom of the rain groove (10) Both sides are connected with one end of the drain pipe (11). There are two drain pipes (11) in continuous bending structure. The other ends of the two drain pipes (11) are respectively fixed and installed. On the left side of the outer wall of the nacelle (1), on the right side of the outer wall, and extend downwards to both sides of the bottom of the outer wall of the nacelle (1) and both sides of the outer wall of the tower (9).

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