Flow guide device and method of wind driven generator

Abstract

The flow guide device comprises a wind driven generator body, a front flow guide cover and a rear flow guide cover, a flow guide assembly, a limiting assembly and an adjusting assembly are arranged in the front flow guide cover, the wind driven generator body comprises a tower drum, a power generation motor and blades, and the power generation motor is installed in the rear flow guide cover; the blades are installed on the front flow guide cover, the rear flow guide cover is installed at the upper end of the tower barrel and movably connected with the tower barrel, filter screens are arranged on the rear end face of the front flow guide cover and the front end face of the rear flow guide cover, the flow guide assembly comprises a flow guide plate, an extension spring and a fixing frame, and an air inlet is formed in the side face of the front flow guide cover. The limiting assembly comprises a limiting sleeve, a first compression spring and a piston column. The wind driven generator has the advantages of being high in stability and safety, and the problem that in the prior art, when a wind driven generator suddenly encounters strong wind, a power generation motor is prone to overload damage is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generators, and in particular to a flow guiding device and method for a wind turbine generator. Background Art

[0002] As a clean and renewable energy source, wind power has been widely used and developed around the world. However, in practical applications, wind turbines face many challenges.

[0003] The efficiency of wind turbines is greatly affected by wind speed, especially under low wind speed conditions, where the power generation efficiency drops significantly. In addition, excessively high wind speeds may cause overload or even damage to the generator components. Generators generate a lot of heat during operation, and if the heat is not dissipated in time, it may cause the motor to overheat, affecting its service life and working efficiency.

[0004] In extreme weather conditions, such as strong winds or gusts, wind turbines need to have good self-regulation capabilities to maintain a stable operating state and avoid equipment failures caused by changes in external conditions. Traditional wind turbines use motors to drive blades to rotate to control the speed of the generator motor, but the complexity of the mechanism leads to high costs, and the electronic components are easily damaged and difficult to maintain. In extreme weather conditions, the pitch adjustment system may not respond immediately, resulting in reduced power generation efficiency or damage to the equipment. Therefore, a wind turbine guide device and method are needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a wind turbine guide device and method, which have the advantages of high stability and safety, and solve the problem in the prior art that the generator motor of the wind turbine is easily overloaded and damaged when encountering strong winds.

[0006] To achieve the above object, the present invention provides the following technical solutions: a wind turbine guide device, comprising a wind turbine body, a front guide cover and a rear guide cover, wherein a guide assembly, a limit assembly and an adjustment assembly are arranged in the front guide cover; The wind turbine main body comprises a tower, a generator and blades, wherein the generator is installed in a rear air guide cover, the blades are installed on a front air guide cover, the rear air guide cover is installed on the upper end of the tower and movably connected thereto, and a filter is provided on the rear end face of the front air guide cover and the front end face of the rear air guide cover; The deflector assembly includes a deflector plate, a tension spring and a fixing frame. An air inlet is arranged on the side of the front deflector, and the deflector assembly is installed in the air inlet. The limiting assembly comprises a limiting sleeve, a first compression spring and a piston column, and the limiting assembly is mounted on a fixing frame; The adjusting assembly comprises a central shaft sleeve, a screw rod and a sliding block, and the adjusting assembly is fixedly installed at the center of the front air guide cover.

[0007] As a preferred flow guide device of a wind turbine of the present invention, the fixing frame is fixedly installed on the inner end surface of the front air guide cover, the fixing frame is provided with a first rotating shaft, the guide plate is provided with a first axial hole matching the first rotating shaft, the slider is provided with a first ear plate, the guide plate is provided with a second ear plate, and the front and rear ends of the tension spring are fixedly connected to the first ear plate and the second ear plate respectively.

[0008] As a preferred guide device of a wind turbine of the present invention, a sealing cover cooperating with the air inlet is arranged on the top of the guide plate, and a guide groove is arranged on the side of the guide plate, and the guide groove is a plurality of evenly arranged arc-shaped notches.

[0009] As a preferred flow guide device of a wind turbine of the present invention, the piston column is inserted into a limit sleeve and elastically connected thereto through a first compression spring, a limit slot cooperating with the limit sleeve is provided on the side of the guide plate, and the front end of the limit sleeve is a spherical top structure.

[0010] As a preferred flow guide device of a wind turbine of the present invention, the limiting slide groove includes a first positioning portion, a second positioning portion and a guide portion, the first positioning portion and the second positioning portion are semicircular notches, and the radius of the first positioning portion is smaller than the radius of the limiting sleeve, the radius of the second positioning portion is equal to the radius of the limiting sleeve, the first positioning portion and the second positioning portion are respectively located at two ends of the upper end of the guide portion, and a protrusion is formed between the first positioning portion and the guide portion.

[0011] As a preferred flow guide device of a wind turbine of the present invention, a second compression spring is arranged on the first rotating shaft, a limiting cap is arranged on the top of the rotating shaft, the guide plate is elastically slidably connected to the fixing frame through the second compression spring, and a limiting flange is arranged on the edge of the second positioning portion.

[0012] As a preferred flow guide device of a wind turbine of the present invention, the screw rod is inserted into the center sleeve and rotatably connected thereto, the slider is inserted into the center sleeve and slidably connected thereto, the screw rod passes through the slider and is threadedly connected thereto, and the center sleeve is provided with a second slide groove that cooperates with the first ear plate.

[0013] As a preferred flow guide device of a wind turbine of the present invention, a rotatably connected seesaw is provided on the central sleeve, the upper end surface of the seesaw is slidably connected to the lower end surface of the guide plate, and a counterweight ball is provided at the end of the seesaw.

[0014] As a preferred flow guide device of a wind turbine of the present invention, a slot for cooperating with a seesaw is provided at the bottom of the flow guide plate, and a universal ball is provided in the slot.

[0015] A flow diversion method for a wind turbine generator comprises the following steps: Step 1: When the blade drives the front air guide cover to rotate, the air guide plate is affected by the centrifugal force and unfolds to guide the air; Step 2: The guide plate guides the airflow from the air inlet to the front guide cover, so that the airflow passes through the front guide cover and enters the rear guide cover to dissipate heat for the generator motor; Step 3: Due to the deployment of the deflector, the rotation resistance of the front deflector increases, thereby reducing the rotation speed of the front deflector, controlling the speed of the generator and preventing overload; Step 4: If the wind weakens, the guide plate will automatically retract under the action of the tension spring, and when the wind strengthens, the guide plate will unfold again, always maintaining the best power generation efficiency and safety.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a guide device in the front air guide cover, which can automatically adjust the deployment state of the guide plate according to the change of wind speed. When the wind weakens, the guide plate will automatically retract under the action of the tension spring, reduce wind resistance, increase the speed of the generator motor, and thus improve power generation efficiency. When the wind strengthens, the guide plate will be deployed again. After the guide plate is deployed, more airflow can be introduced into the rear air guide cover to help the generator motor dissipate heat, increase wind resistance, reduce the speed of the generator motor, avoid excessive motor temperature due to excessive power generation, and thus reduce the risk of motor damage. In this way, it can automatically adapt to different wind speed conditions and maintain the best working state of the wind turbine.

[0017] 2. The present invention cooperates with the limit assembly and the guide assembly so that the wind turbine can cooperate with the seesaw structure at the limit speed. The guide plate can quickly jump and expand and remain fixed in the limit position under the action of the seesaw and its own centrifugal force, and respond quickly to extreme weather such as downbursts. When the wind is small enough, the guide device will be retracted into the front guide cover, thereby avoiding the guide device from repeatedly popping open or contracting and affecting the stability of the equipment operation.

[0018] 3. The present invention sets an adjustment component in the front air deflector. The design of the screw rod and the slider allows the operator to adjust the initial length of the tension spring according to actual conditions, thereby changing the ejection threshold of the deflector plate to adapt to the needs of different types of generator motors, thereby enhancing the flexibility and applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 An exploded view of the present invention; Figure 3 It is a side cross-sectional view of the front air guide cover, the air guide assembly and the adjustment assembly in the matching state of the present invention; Figure 4 It is a schematic diagram of the coordination state of the flow guide assembly, the limit assembly and the adjustment assembly of the present invention; Figure 5 An exploded view of the guide plate and the fixing frame of the present invention; Figure 6 It is a schematic diagram of the guide plate structure of the present invention; Figure 7 It is a rear cross-sectional view of the coordinated state of the flow guide assembly, the limit assembly and the adjustment assembly of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Fig. 9 For the present invention Figure 7 Sectional view at point B; Fig.10 It is a schematic diagram of the structure of the front fairing of the present invention; Fig.11 It is a schematic diagram of the structure of the rear air guide cover of the present invention; Fig.12 It is a schematic diagram of the main structure of the generator of the present invention.

[0020] In the figure: 1. generator body; 101. blades; 102. generator motor; 103. tower; 2. front air guide cover; 201. air inlet; 202. filter screen; 3. rear air guide cover; 4. air guide assembly; 401. air guide plate; 4011. air guide groove; 4012. sealing cover; 4013. limit slide groove; 40131. first positioning part; 40132. second positioning part; 40133. guide part; 40134. protrusion; 4014. slot; 4015. universal ball bearing; 4016 , second ear plate; 4017, limit flange; 4018, first axial hole; 402, tension spring; 403, fixing frame; 4031, first rotating shaft; 4032, limit cap; 4033, second compression spring; 5, limit assembly; 501, limit sleeve; 502, first compression spring; 503, piston column; 6, adjustment assembly; 601, center sleeve; 6011, second slide groove; 602, screw rod; 603, slider; 6031, first ear plate; 604, seesaw; 6041, counterweight ball. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 12 A wind turbine guide device comprises a wind turbine body 1, a front guide cover 2 and a rear guide cover 3, wherein a guide component 4, a limit component 5 and an adjustment component 6 are arranged in the front guide cover 2; The wind turbine body 1 includes a tower 103, a generator 102 and blades 101. The generator 102 is installed in the rear air guide 3, and the blades 101 are installed on the front air guide 2. The rear air guide 3 is installed at the upper end of the tower 103 and is movably connected thereto. The rear end surface of the front air guide 2 and the front end surface of the rear air guide 3 are provided with a filter 202. The air guide assembly 4 includes an air guide plate 401, a tension spring 402 and a fixing frame 403. An air inlet 201 is provided on the side of the front air guide cover 2, and the air guide assembly 4 is installed in the air inlet 201; The limiting assembly 5 includes a limiting sleeve 501, a first compression spring 502 and a piston rod 503, and the limiting assembly 5 is installed on the fixing frame 403; The adjustment component 6 includes a central sleeve 601 , a screw rod 602 and a slider 603 . The adjustment component 6 is fixedly installed at the center of the front air duct 2 .

[0022] When the blades 101 drive the front air guide 2 to rotate, the guide plate 401 is affected by the centrifugal force and unfolds to guide the air. The guide plate 401 guides the airflow from the air inlet 201 to the front air guide 2, so that the airflow passes through the front air guide 2 and enters the rear air guide 3 to dissipate heat for the generator 102. Due to the unfolding of the guide plate 401, the rotation resistance of the front air guide 2 increases, thereby reducing the rotation speed of the front air guide 2, controlling the speed of the generator motor 102, and preventing overload. If the wind weakens, the guide plate 401 will automatically retract under the action of the tension spring 402, and when the wind strengthens, the guide plate 401 will unfold again to always maintain the best power generation efficiency and safety.

[0023] Furthermore, the fixing frame 403 is fixedly installed on the inner end surface of the front air deflector 2, the fixing frame 403 is provided with a first rotating shaft 4031, the guide plate 401 is provided with a first axial hole 4018 matching therewith, the slider 603 is provided with a first ear plate 6031, the guide plate 401 is provided with a second ear plate 4016, and the front and rear ends of the tension spring 402 are fixedly connected to the first ear plate 6031 and the second ear plate 4016 respectively.

[0024] The guide plate 401 can rotate around the first rotating shaft 4031 under the action of its own centrifugal force. When the front air guide cover 2 rotates at a high speed, the guide plate 401 can be fully unfolded, so as to guide the airflow into the front air guide cover 2, so that the airflow passes through the front air guide cover 2 and enters the rear air guide cover 3, so as to dissipate the heat of the generator motor 102, thereby avoiding excessive power generation and damage to the generator motor 102, and increasing the wind resistance of the front air guide cover 2, reducing the rotation speed of the generator motor 102, and avoiding overload damage.

[0025] Furthermore, a sealing cover 4012 cooperating with the air inlet 201 is provided on the top of the guide plate 401, and a guide groove 4011 is provided on the side of the guide plate 401. The guide groove 4011 is a plurality of evenly arranged arc-shaped notches.

[0026] The sealing cover 4012 prevents the air inlet 201 from having a large gap after the guide plate 401 is retracted into the front air guide cover 2, causing dust to accumulate in the front air guide cover 2, or causing the surface of the front air guide cover 2 to be uneven, increasing the wind resistance of the front air guide cover 2 and affecting its power generation under light wind conditions.

[0027] Furthermore, the piston rod 503 is inserted into the limiting sleeve 501 and elastically connected thereto through the first compression spring 502. The side of the guide plate 401 is provided with a limiting groove 4013 that cooperates with the limiting sleeve 501. The front end of the limiting sleeve 501 is a ball top structure.

[0028] The limiting sleeve 501 slides in the limiting groove 4013, so that the guide plate 401 completes the expansion and reset action. When the wind turbine rotates at high speed, the guide plate 401 squeezes the limiting sleeve 501 under the action of centrifugal force, so that the limiting sleeve 501 squeezes the first compression spring 502 to shrink inward, so that it can slide along the limiting groove 4013.

[0029] Furthermore, the limiting slide groove 4013 includes a first positioning portion 40131, a second positioning portion 40132 and a guide portion 40133. The first positioning portion 40131 and the second positioning portion 40132 are semicircular grooves, and the radius of the first positioning portion 40131 is smaller than the radius of the limiting sleeve 501, and the radius of the second positioning portion 40132 is equal to the radius of the limiting sleeve 501. The first positioning portion 40131 and the second positioning portion 40132 are respectively located at the upper ends of the guide portion 40133, and a protrusion 40134 is formed between the first positioning portion 40131 and the guide portion 40133.

[0030] When the limiting sleeve 501 is inserted into the first positioning portion 40131, the guide plate 401 is in the initial state, and the sealing cover 4012 is flush with the outer end surface of the front guide cover 2. As the centrifugal force increases, when the centrifugal force applied to the guide plate 401 is greater than the elastic force given by the tension spring 402 and the resistance given by the protrusion 40134, that is, when the speed of the wind turbine exceeds the threshold, the limiting sleeve 501 squeezes the first compression spring 502 to shrink inward, thereby quickly sliding along the guide portion 40133 to the second positioning portion 40134. The part 40132 causes the guide plate 401 to suddenly jump and expand to increase the wind resistance of the wind turbine, and at the same time guide the airflow into the rear guide cover 3 to dissipate the heat of the generator 102. The smaller first positioning part 40131 is designed to prevent the limiting sleeve 501 from passing through the first positioning part 40131, causing the guide plate 401 to be unable to pop open, and the larger second positioning part 40132 is designed to allow the limiting sleeve 501 to pass through the second positioning part 40132, so that it can remain stable during rotation.

[0031] Furthermore, a second compression spring 4033 is provided on the first rotating shaft 4031 , a limiting cap 4032 is provided on the top of the rotating shaft, the guide plate 401 and the fixing frame 403 are elastically slidably connected via the second compression spring 4033 , and a limiting flange 4017 is provided on the edge of the second positioning portion 40132 .

[0032] When the deflector 401 is unfolded, the limiting sleeve 501 is aligned with the center of the second positioning portion 40132 under the action of the limiting flange 4017. Since the airflow blows vertically to the side of the deflector 401 during the high-speed rotation of the front air guide 2, the deflector 401 is squeezed by the second compression spring 4033 under the action of the airflow, so that the limiting sleeve 501 is inserted into the second positioning portion 40132. The deflector 401 is completely fixed under the action of the first rotating shaft 4031 and the limiting sleeve 501. Even if the centrifugal force is slightly insufficient, the deflector 401 can still remain unfolded. When the wind force is small enough, the deflector 401 rebounds and slides along the first rotating shaft 4031 under the resetting action of the second compression spring 4033, so that the limiting sleeve 501 can slide out of the second positioning portion 40132, and the deflector 401 can rotate again. At this time, the deflector 401 is reset under the action of the tension spring 402 to prevent the deflector 401 from being repeatedly unfolded or contracted.

[0033] Furthermore, the screw rod 602 is inserted into the center sleeve 601 and is rotatably connected thereto, the slider 603 is inserted into the center sleeve 601 and is slidably connected thereto, the screw rod 602 passes through the slider 603 and is threadedly connected thereto, and the center sleeve 601 is provided with a second slide groove 6011 that cooperates with the first ear plate 6031 .

[0034] The position of the slider 603 is adjusted by rotating the screw rod 602, thereby adjusting the initial length of the tension spring 402 to change the tension of the tension spring 402 on the guide plate 401 and change the ejection threshold of the guide plate 401, so as to adapt to different models of generator motors 102.

[0035] Furthermore, a rotatably connected seesaw 604 is disposed on the central shaft sleeve 601 , the upper end surface of the seesaw 604 is slidably connected to the lower end surface of the guide plate 401 , and a weighted ball 6041 is disposed at the end of the seesaw 604 .

[0036] When the central sleeve 601 rotates at high speed, the seesaw 604 expands outward under the action of centrifugal force, thereby levering the bottom of the guide plate 401 to prevent the guide plate 401 from being insufficiently expanded by its own centrifugal force. The counterweight ball 6041 increases the centrifugal force of the pry bar.

[0037] Furthermore, a slot 4014 that cooperates with the rocker 604 is provided at the bottom of the guide plate 401 , and a universal ball 4015 is provided in the slot 4014 .

[0038] The friction between the crowbar and the guide plate 401 is reduced by the universal ball 4015, thereby reducing the wear rate of the crowbar and increasing the service life of the crowbar.

[0039] See also Figure 1-Figure 12 , a wind turbine diversion method, comprising the following steps: Step 1: When the device is started, the deflector 401 is usually in a retracted state, and is kept in a closed state by means of the tension spring 402 and the limit assembly 5, thereby reducing the wind resistance of the front deflector 2, so that the wind turbine can rotate quickly under light wind conditions; Step 2: When the blade 101 drives the front air guide 2 to rotate at a high speed, the centrifugal force acts on the air guide plate 401 and the seesaw 604. The seesaw 604 pries the air guide plate 401 to overcome the tension of the tension spring 402 and the resistance of the first compression spring 502 in the limit assembly 5. The limit sleeve 501 compresses the first compression spring 502 to shrink, so that the air guide plate 401 is affected by the centrifugal force and quickly expands to guide the air. Step 3, after the guide plate 401 is fully unfolded, the wind can directly act on the guide plate 401, guide more airflow into the front guide cover 2 through the guide groove 4011, and enter the rear guide cover 3 through the filter 202 to dissipate heat for the generator motor 102. The guide plate 401 is affected by the wind and slides along the first rotating shaft 4031, squeezing the second spring so that the limiting sleeve 501 is inserted into the second positioning portion 40132, thereby fixing the guide plate 401 through the first rotating shaft 4031 and the limiting sleeve 501; Step 4: Due to the deployment of the deflector 401, the wind resistance area is increased, resulting in an increase in the rotation resistance of the front deflector 2, thereby reducing the rotation speed of the front deflector 2, controlling the speed of the generator motor 102, and preventing overload; Step 5: When the wind weakens and the force of the wind is less than the elastic force of the second compression spring 4033, the limiting sleeve 501 slides out from the second limiting portion, so that the guide plate 401 can automatically rotate under the action of the tension spring 402, reducing the wind resistance of the front fairing 2 and improving the power generation efficiency.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine guide device, comprising a wind turbine body (1), a front guide cover (2) and a rear guide cover (3), characterized in that: The front air guide cover (2) is provided with an air guide component (4), a limit component (5) and an adjustment component (6); The wind turbine main body (1) comprises a tower (103), a generator motor (102) and blades (101); the generator motor (102) is mounted in a rear air guide cover (3); the blades (101) are mounted on a front air guide cover (2); the rear air guide cover (3) is mounted on the upper end of the tower (103) and is movably connected thereto; a filter screen (202) is provided on the rear end surface of the front air guide cover (2) and the front end surface of the rear air guide cover (3); The air guide assembly (4) comprises an air guide plate (401), a tension spring (402) and a fixing frame (403); an air inlet (201) is provided on the side of the front air guide cover (2), and the air guide assembly (4) is installed in the air inlet (201); The limiting assembly (5) comprises a limiting sleeve (501), a first compression spring (502) and a piston rod (503); the limiting assembly (5) is mounted on a fixing frame (403); The adjustment component (6) comprises a central shaft sleeve (601), a screw rod (602) and a slider (603), and the adjustment component (6) is fixedly mounted at the center of the front air guide cover (2).

2. A flow guide device for a wind turbine according to claim 1, characterized in that: The fixing frame (403) is fixedly mounted on the inner end surface of the front air guide cover (2); the fixing frame (403) is provided with a first rotating shaft (4031); the air guide plate (401) is provided with a first axial hole (4018) matched with the first rotating shaft; the sliding block (603) is provided with a first ear plate (6031); the air guide plate (401) is provided with a second ear plate (4016); and the front and rear ends of the tension spring (402) are respectively fixedly connected to the first ear plate (6031) and the second ear plate (4016).

3. A flow guide device for a wind turbine according to claim 1, characterized in that: A sealing cover (4012) that cooperates with the air inlet (201) is arranged on the top of the guide plate (401), and a guide groove (4011) is arranged on the side of the guide plate (401), wherein the guide groove (4011) is a plurality of evenly arranged arc-shaped notches.

4. A flow guide device for a wind turbine according to claim 2, characterized in that: The piston column (503) is inserted into the limiting sleeve (501) and elastically connected thereto via a first compression spring (502); a limiting sliding groove (4013) cooperating with the limiting sleeve (501) is provided on the side of the guide plate (401); and the front end of the limiting sleeve (501) is a ball-top structure.

5. A flow guide device for a wind turbine according to claim 4, characterized in that: The limiting sliding groove (4013) comprises a first positioning portion (40131), a second positioning portion (40132) and a guiding portion (40133); the first positioning portion (40131) and the second positioning portion (40132) are semicircular notches; the radius of the first positioning portion (40131) is smaller than the radius of the limiting sleeve (501); the radius of the second positioning portion (40132) is equal to the radius of the limiting sleeve (501); the first positioning portion (40131) and the second positioning portion (40132) are respectively located at two ends of the upper end of the guiding portion (40133); and a protrusion (40134) is formed between the first positioning portion (40131) and the guiding portion (40133).

6. A flow guide device for a wind turbine according to claim 5, characterized in that: A second compression spring (4033) is provided on the first rotating shaft (4031), a limiting cap (4032) is provided on the top of the rotating shaft, the guide plate (401) is elastically slidably connected to the fixing frame (403) via the second compression spring (4033), and a limiting flange (4017) is provided on the edge of the second positioning portion (40132).

7. A flow guide device for a wind turbine according to claim 2, characterized in that: The screw rod (602) is inserted into the central shaft sleeve (601) and is rotatably connected thereto. The sliding block (603) is inserted into the central shaft sleeve (601) and is slidably connected thereto. The screw rod (602) passes through the sliding block (603) and is threadedly connected thereto. The central shaft sleeve (601) is provided with a second sliding groove (6011) that cooperates with the first ear plate (6031).

8. A flow guide device for a wind turbine according to claim 1, characterized in that: A rotatably connected seesaw (604) is provided on the central shaft sleeve (601), the upper end surface of the seesaw (604) is slidably connected to the lower end surface of the guide plate (401), and a weighted ball (6041) is provided at the end of the seesaw (604).

9. A flow guide device for a wind turbine according to claim 8, characterized in that: The bottom of the guide plate (401) is provided with a slot (4014) that cooperates with the seesaw (604), and a universal ball (4015) is provided in the slot (4014).

10. A flow guiding method for a wind turbine generator, applicable to a flow guiding device for a wind turbine generator as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: When the blade (101) drives the front air guide cover (2) to rotate, the air guide plate (401) is affected by the centrifugal force and unfolds to guide the air; Step 2: The guide plate (401) guides the airflow from the air inlet (201) to the front guide cover (2), so that the airflow passes through the front guide cover (2) and enters the rear guide cover (3) to dissipate heat for the generator motor (102); Step 3: Due to the deployment of the deflector plate (401), the rotational resistance of the front deflector (2) increases, thereby reducing the rotational speed of the front deflector (2), controlling the speed of the generator motor (102) and preventing overload; Step 4: If the wind weakens, the guide plate (401) will automatically retract under the action of the tension spring (402), and when the wind strengthens, the guide plate (401) will unfold again, always maintaining the best power generation efficiency and safety.

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