A set of vertical axis breeze power generation device

Abstract

The present invention relates to the technical field of micro-wind power generation devices, specifically a set-type vertical axis micro-wind power generation device, including a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet. The transmission shaft of the magnetic levitation generator is sleeved with an empty pipe, and the top of the empty pipe is provided with a wind receiving part for guiding the wind beam to gather and drive the transmission shaft to rotate; the wind receiving part includes a wind wheel coaxially connected to the top of the transmission shaft and an air guide tube using a hyperbolic flow channel; the air guide tube guides all wind beams to the concave surfaces of the cavities of several wind wheels to do work, so the wind beams will not be refracted and disturbed by the leeward impact on the convex surfaces of the cavities of several wind wheels. The present invention guides all wind beams to several air inlets through the air guide tube that can generate a hyperbolic air channel, and turns to the wind receiving cavity, and then impacts the concave surfaces of several wheel blades to do work, so the wind beams will not be refracted and disturbed by the leeward impact on the convex surfaces of several wheel blades, and then all wind beams are converted into kinetic energy to drive the wind wheel, thereby improving the wind energy utilization coefficient.

Description

Technical Field

[0001] The invention relates to the technical field of breeze power generation devices, and in particular to a set-type vertical axis breeze power generation device. Background Art

[0002] Wind energy, as an important component of renewable energy, has received strong support and encouragement from the country due to its clean, efficient and sustainable characteristics. As a clean and renewable energy utilization method, breeze power generation helps to reduce dependence on traditional energy, reduce energy consumption and environmental pollution. The advantage of breeze power generation lies in its wide adaptability to wind speed. As long as the wind speed reaches 2m / s or above, it can generate electricity, which reduces the requirements for the installation location of wind power generation equipment, so that it can be widely used in urban and rural open spaces, building roofs, roadsides and other areas, suitable for large-scale distributed installation.

[0003] However, due to its structural limitations, the existing packaged vertical axis micro-wind power generation device inevitably has problems such as wind refraction, leeward impact, unconcentrated wind, and insufficient kinetic energy, resulting in a wind energy utilization coefficient usually between 30% and 40%, which greatly limits the widespread application of micro-wind power generation technology.

[0004] Therefore, developing an efficient breeze power generation device has become the common pursuit of many wind power engineering researchers and engineering technicians. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a packaged vertical axis breeze power generation device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a set-type vertical axis breeze power generation device, including a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, the outer part of the transmission shaft of the magnetic levitation generator is sleeved with an empty tube, and the top of the empty tube is provided with a wind receiving part for guiding the wind beam to gather and drive the transmission shaft to rotate; the wind receiving part includes a wind wheel coaxially connected to the top of the transmission shaft and an air guide tube using a hyperbolic flow channel; the air guide tube guides all wind beams to the concave surfaces of the cavities of several wind wheels to do work, so that the wind beams will not be refracted on the convex surfaces of the cavities of the several wind wheels and will not be disturbed by leeward impact.

[0007] As a further improvement of the technical solution, the wind wheel is composed of a main shaft and a plurality of wheel blades arranged in a ring shape with equal spacing on its side walls. The wheel blades are in the shape of arc plates, and an air inlet is formed between the outer ends of two adjacent wheel blades.

[0008] As a further improvement of the present technical solution, the air guide tube is composed of a circular ring mounted on the upper and lower ends of the wind wheel and a plurality of air induced draft plates vertically embedded between the two circular rings. The number of the air induced draft plates is equal to the number of the wheel blades. The air induced draft plates are in the shape of circular arc plates and are tangentially connected to the wheel blades to form a hyperbolic plate.

[0009] As a further improvement of the technical solution, the cavity between two adjacent wheel blades forms a wind receiving cavity, and the cavity between two adjacent air guide plates forms an air inlet duct, and the ratio of the inner and outer opening areas of the air inlet duct is between 1:3 and 1:2.

[0010] As a further improvement of the present technical solution, the wind guide tube guides all wind beams to a number of air inlets, and turns into a wind receiving cavity, and then impacts the concave surfaces of a number of wheel blades to do work. In this way, the wind beams will no longer be refracted on the convex surfaces of the number of wheel blades and disturbed by the leeward impact, thereby converting all wind beams into kinetic energy for driving the wind wheel.

[0011] As a further improvement of the present technical solution, a draft section rotating around the air guide tube is provided at one side half of the air guide tube, and the draft section includes an air box for increasing the speed of the air beam and a servo motor for driving the air box to rotate; a wind direction sensor is installed on the top surface of the air box, and after the wind direction sensor detects the wind direction information, it converts it into an electrical signal and transmits it to the motor control system wirelessly. After the motor control system receives the signal from the wind direction sensor, it controls the servo motor to start according to the size and direction of the signal, and then drives the air box to rotate to be consistent with the direction of the wind direction sensor.

[0012] As a further improvement of the present technical solution, the front and rear ends of the draft box are open and a circular arc opening is provided at the rear end, and the circular arc opening is adapted to be snapped into the outer side of the air guide tube, and a number of wind baffles are provided at equal intervals between the upper and lower surfaces inside the draft box, and the wind baffles are arranged side by side along the front and rear directions of the draft box, and the cavity between two adjacent wind baffles forms a speed increasing path.

[0013] As a further improvement of the present technical solution, the bottom of the induced draft box is fixedly connected with a suspension frame, the rear end of the suspension frame is provided with a rotating sleeve mounted with the empty pipe sleeve, the bottom outer wall of the rotating sleeve is provided with a gear ring, and the top of the output end of the servo motor is coaxially connected with a transmission gear meshing with the gear ring.

[0014] As a further improvement of the technical solution, both sides of the front end of the induced draft box are rotatably connected with wind blocking plates, and the middle parts of both sides of the front end of the induced draft box are vertically provided with fixed cylinders, and the middle part of the wind blocking plate is provided with a bayonet socket that is engaged with the fixed cylinder.

[0015] As a further improvement of the technical solution, a fixed sleeve is connected to one side of the servo motor, and a fixed platform and a support platform are provided on the top outer wall spacer of the empty tube. The fixed sleeve is fixedly connected to the fixed platform by bolts, and the rotating sleeve is sleeved and matched with the support platform.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The set-type vertical axis breeze power generation device guides all wind beams to a plurality of wind inlet ducts through the wind guide tube that can generate a hyperbolic wind duct, and then turns to the wind receiving cavity, and then impacts the concave surfaces of a plurality of wheel blades to do work. The wind beams are no longer refracted on the convex surfaces of the plurality of wheel blades and are not disturbed by the leeward impact, so that all wind beams are converted into kinetic energy for driving the wind wheel, thereby improving the wind energy utilization coefficient.

[0018] 2. The set-type vertical axis breeze power generation device, through the set induced draft part, the wind direction sensor detects the wind direction information, and converts it into an electrical signal and transmits it to the motor control system by wireless means, thereby controlling the servo motor to start, and then driving the induced draft box to rotate to the same direction as the wind direction sensor, so that the induced draft box faces the breeze and gathers it to transmit it to the air guide tube, and at the same time utilizes the cavity between each two adjacent wind baffles inside the induced draft box to form a speed increase path and a narrow tube effect, thereby increasing the frequency of utilizing the secondary breeze and increasing the continuity of power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art, under the guidance of the present invention, select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0020] Figure 1 It is a schematic diagram of the overall assembly structure of the present invention;

[0021] Figure 2 This is a disassembled diagram of the wind receiving portion of the present invention;

[0022] Figure 3 It is a schematic diagram of the assembly structure of the air induction part of the present invention;

[0023] Figure 4 It is an overall top view of the present invention;

[0024] Figure 5 It is a schematic diagram of the assembly structure of the induced draft box of the present invention;

[0025] Figure 6 It is an exploded view of the draft assembly of the present invention;

[0026] The meaning of each number in the figure is:

[0027] 100, empty tube; 110, fixed platform; 120, support platform;

[0028] 200, wind receiving part; 210, wind wheel; 211, wheel blade; 220, wind guide tube; 221, wind guide plate; 230, wind receiving cavity; 240, air inlet duct;

[0029] 300, air induction part; 310, air induction box; 311, air baffle; 312, speed increasing path; 313, arc opening; 314, suspension frame; 315, rotating sleeve; 316, gear ring; 317, fixed cylinder;

[0030] 320, servo motor; 321, transmission gear; 322, fixing sleeve; 330, wind deflector; 331, bayonet;

[0031] 400. Wind direction sensor. DETAILED DESCRIPTION

[0032] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, the technical personnel's conception is based on any possible variation of the present invention, which should be regarded as belonging to the scope of the present invention. The terms "installation" and "connection" should be understood in a broad sense, which means direct connection and indirect connection through an intermediate medium.

[0033] The terms "central axis", "vertical", "horizontal", "front", "back", "up", "down", "left", "right", "top", "bottom", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0034] See also Figure 1-Figure 6As shown, the present invention provides a set-type vertical axis breeze power generation device, including a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, the outer sleeve of the transmission shaft of the magnetic levitation generator is provided with an empty pipe 100, and the top of the empty pipe 100 is provided with a wind receiving part 200 for guiding the wind beam to converge and drive the transmission shaft to rotate; the empty pipe 100 is installed on the casing of the magnetic levitation generator, and is used to suspend the wind receiving part 200 to receive breeze power generation; the wind receiving part 200 includes a wind wheel 210 coaxially connected to the top of the transmission shaft and a wind guide tube 220 using a hyperbolic flow channel; because the ordinary wind wheel is affected by the incoming wind, from a top-down perspective, the blades on the upper half of the wind wheel wind receiving surface push the impeller to rotate under the component force perpendicular to the blades to drive the wind turbine to do work, while the lower half of the impeller is subjected to the vertical leeward resistance on the back of the blades, and the impeller is subjected to a torque opposite to the wind wheel turning, thereby offsetting part of the rotor's ability to do work. The wind guide 220 guides all wind beams to the concave surfaces of the cavities of the wind wheels 210 to perform work, so that the wind beams are not refracted or disturbed by leeward impact at the convex surfaces of the cavities of the wind wheels 210, thereby improving the wind energy utilization coefficient.

[0035] Specifically, the wind wheel 210 is composed of a main shaft and a plurality of wheel blades 211 arranged in a ring shape with equal spacing on its side wall. The wheel blades 211 are in the shape of circular arc plates, and an air inlet is formed between the outer ends of two adjacent wheel blades 211. The number of the wheel blades 211 is 8-10;

[0036] The air guide tube 220 is composed of a circular ring sleeved with the upper and lower ends of the wind wheel 210 and a plurality of air guide plates 221 vertically embedded between the two circular rings. The number of the air guide plates 221 is equal to the number of the wheel blades 211. The air guide plates 221 are in the shape of circular arc plates and are tangentially connected to the wheel blades 211 to form a hyperbolic plate.

[0037] The cavity between two adjacent impellers 211 forms a wind receiving cavity 230, and the cavity between two adjacent air induction plates 221 forms an air inlet duct 240. The ratio of the inner and outer opening areas of the air inlet duct 240 is between 1:3 and 1:2. Due to the narrow tube effect, the wind flow rate entering the wind receiving cavity 230 is increased by 2-3 times, which greatly increases the work capacity.

[0038] The wind guide 220 guides all wind beams to the plurality of air inlet ducts 240 , turns into the wind receiving cavity 230 , and then impacts the concave surfaces of the plurality of wheel blades 211 to perform work. Then, the wind beams are no longer refracted on the convex surfaces of the plurality of wheel blades 211 and are not disturbed by the leeward impact, and the entire wind beams are converted into kinetic energy for driving the wind wheel 210 .

[0039] Furthermore, the wind receiving part 200 can gather energy and increase the speed of the incoming wind by reducing the windward area, and can also reduce or eliminate the leeward resistance by changing the wind direction. It is suitable for installation at high altitudes or on building structures, so that it can generate electricity stably even at wind speeds of 3-30m / s and 2-10 levels, and the wind energy utilization rate can reach more than 0.75;

[0040] like Figure 4 As shown, the high-efficiency energy-concentrating vertical axis breeze wind turbine is provided with a wind guide tube 220 outside the wind rotor 210. For the same windward area, the wind energy cross-sectional area entering the wind rotor 210 is only about 1 / 2, the wind energy flow rate is about 2 times, and the leeward resistance acting on the wind rotor 210 is almost reduced to zero;

[0041] From the fluid continuity equation, we know that:

[0042] ρ 1 S 1 v 1 =ρ 2 S 2 v 2 Right now:

[0043] Where: ρ: wind density, kg / m 3

[0044] S: windward area, m 2

[0045] v: wind speed at the impeller inlet, m / s

[0046] Here, the change of air density ρ is very small. To simplify the problem, the change of ρ is ignored. It can be considered that the actual wind speed entering the wind wheel 210 is approximately inversely proportional to the inlet area of ​​the wind wheel 210.

[0047] Wind energy:

[0048] Where: P: power generation, kW

[0049] m: incoming wind mass, kg

[0050] ρ: wind density, kg / m 3

[0051] S: windward area, m 2

[0052] v: wind speed at the impeller inlet, m / s

[0053] Since the wind energy passing through the wind wheel 210 cannot be completely converted into the mechanical energy of the wind wheel, its wind energy utilization rate Cp is:

[0054]

[0055] Where: Pm: mechanical power output by the wind turbine;

[0056] Pw is the wind energy input by the wind turbine;

[0057] At present, the wind energy utilization rate of most vertical axis wind turbines can reach about 0.4;

[0058] If you design a 1000w vertical axis breeze wind turbine, you need the incoming wind energy to be ≥2500w;

[0059] According to the above formula, we can get:

[0060] Sv 3 =2500×2 / ρ=5000 / 1.25=4000,

[0061] If the full load rated wind speed is 8m / s, S = 7.8m 2 Obviously, the lower the rated wind speed is, the larger S will be.

[0062] S = 2 × r × L,

[0063] Where: S is the cross-sectional area of ​​the swept wind, r is the distance between the blade and the axis and is also the radius of the wind wheel 210, and L is the height of the blade;

[0064] If the fan power is to reach 1000W, the wind sweeping cross-sectional area cannot be less than 7.8m 2 , if r is 1.5m, L is 2.6m;

[0065] Wind turbine output power:

[0066] A 1000w vertical axis breeze wind turbine is designed using a high-efficiency energy-concentrating vertical axis breeze wind turbine. The wind energy utilization coefficient is 0.75, S 2 / S 1 Take 0.5, then

[0067]

[0068] The natural wind speed is 8m / s, and the actual wind speed entering the wind rotor 210 is about 15.4m / s, so the windward cross-sectional area S of the wind rotor 210 is,

[0069]

[0070] It can be seen that the windward cross-sectional area of ​​the air guide tube 220 is about 1.17m 2 Considering the change of ρ and retaining some margin, the diameter of the air guide 220 is selected as 1.2m, the height is selected as 1.6m, and the swept area is 1.92m 2 , which is 1 / 3-1 / 4 of the ordinary vertical axis wind turbine, and the efficiency of the wind turbine is greatly improved.

[0071] In addition, a wind induction part 300 rotating around the wind guide tube 220 is provided at one side half of the wind guide tube 220, and the wind induction part 300 includes a wind induction box 310 for increasing the speed of the wind beam and a servo motor 320 for driving the wind induction box 310 to rotate; a wind direction sensor 400 is installed on the top surface of the wind induction box 310, and after the wind direction sensor 400 detects the wind direction information, it converts it into an electrical signal and transmits it to the motor control system in a wireless manner. After receiving the signal from the wind direction sensor, the motor control system controls the servo motor 320 to start according to the size and direction of the signal, and then drives the wind induction box 310 to rotate to be consistent with the direction of the wind direction sensor 400, so that the wind induction box 310 faces the breeze and gathers it to be transmitted to the wind guide tube 220;

[0072] The front and rear ends of the draft box 310 are open and the rear end is provided with an arc opening 313, which is adapted and snapped to the outer side of the air guide tube 220 with a gap left to prevent friction from interfering with the rotation of the draft box 310; a number of wind baffles 311 are evenly spaced between the upper and lower surfaces inside the draft box 310, and the wind baffles 311 are arranged side by side along the front and rear directions of the draft box 310, and the cavity between two adjacent wind baffles 311 forms a speed increasing path 312; the wind needs to pass through a small channel, which will cause the wind speed to accelerate, and this effect is called the narrow tube effect, thereby increasing the frequency of utilizing the level 2 breeze and increasing the continuity of power generation.

[0073] Furthermore, the bottom of the induced draft box 310 is fixedly connected to a suspension frame 314, and the rear end of the suspension frame 314 is integrally provided with a rotating sleeve 315 which is sleeved with the emptying pipe 100, and the bottom outer wall of the rotating sleeve 315 is sleeved with a ring gear 316, and the top of the output end of the servo motor 320 is coaxially connected to a transmission gear 321 which meshes with the ring gear 316; the transmission gear 321 is driven by the servo motor 320 to drive the ring gear 316 to rotate, that is, the induced draft box 310 is driven to rotate around the outer side of the air guide tube 220 to accelerate the induced wind.

[0074] Furthermore, both sides of the front end of the draft box 310 are rotatably connected with wind blocking plates 330 for expanding the draft range and guiding the wind to the speed increasing channel 312 in the draft box 310 for speed increase; a fixing cylinder 317 is vertically provided in the middle of both sides of the front end of the draft box 310, and a bayonet 331 for snapping with the fixing cylinder 317 is provided in the middle of the wind blocking plate 330, and a screw is inserted through it, and then a nut is used to tighten and position the wind blocking plate 330; when the draft box 310 is removed, the wind blocking plate 330 is rotated to its side wall for storage without taking up space.

[0075] Furthermore, a fixing sleeve 322 is connected to one side of the servo motor 320 for suspending the servo motor 320; a fixing platform 110 and a supporting platform 120 are provided at intervals on the top outer wall of the emptying pipe 100, and the fixing sleeve 322 is fixedly connected to the fixing platform 110 by bolts, so that the servo motor 320 can work stably; the rotating sleeve 315 is sleeved and matched with the supporting platform 120, so that the draft box 310 is supported and can rotate stably.

[0076] The working principle of the set-type vertical axis breeze power generation device of the present invention is that, due to the influence of the wind on the ordinary wind wheel, from a top view, the blades on the upper part of the wind receiving surface of the wind wheel are driven to rotate by the component force perpendicular to the blades to drive the wind turbine to do work, while the lower part of the wind wheel is affected by the vertical leeward resistance on the back of the blades, and the impeller is subjected to the torque opposite to the wind wheel's turning direction, thereby offsetting part of the rotor's ability to do work;

[0077] The wind guide 220 of the present invention guides all wind beams to the concave surfaces of the cavities of the wind wheels 210 to perform work, so the wind beams do not refract or cause disturbances caused by leeward impact on the convex surfaces of the cavities of the wind wheels 210;

[0078] Specifically, the wind guide 220 guides all wind beams to the plurality of air inlet ducts 240, and turns into the wind receiving cavity 230, and then impacts the concave surfaces of the plurality of wheel blades 211 to perform work. Then, the wind beams are no longer refracted on the convex surfaces of the plurality of wheel blades 211 and are not disturbed by the leeward impact, and the entire wind beams are converted into kinetic energy for driving the wind wheel 210, thereby improving the wind energy utilization coefficient.

[0079] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A set-type vertical axis breeze power generation device, comprising a magnetic levitation generator, a power distribution cabinet and an energy storage cabinet, characterized in that: The transmission shaft of the magnetic levitation generator is sleeved with an empty tube (100) on the outside, and the top of the empty tube (100) is provided with a wind receiving portion (200) for guiding the wind beam to converge and drive the transmission shaft to rotate; the wind receiving portion (200) comprises a wind wheel (210) coaxially connected to the top of the transmission shaft and a wind guide tube (220) using a hyperbolic flow channel; the wind guide tube (220) guides all wind beams to the concave surfaces of the cavities of the wind wheels (210) to perform work, so that the wind beams are not refracted on the convex surfaces of the cavities of the wind wheels (210) and are not disturbed by leeward impact.

2. The set-type vertical axis breeze power generation device according to claim 1 is characterized in that: The wind wheel (210) is composed of a main shaft and a plurality of wheel blades (211) arranged in a ring shape and at equal intervals on its side wall; the wheel blades (211) are in the shape of circular arc plates, and an air inlet is formed between the outer ends of two adjacent wheel blades (211).

3. The set-type vertical axis breeze power generation device according to claim 2 is characterized in that: The air guide tube (220) is composed of a circular ring sleeved on the upper and lower ends of the wind wheel (210) and a plurality of air induction plates (221) vertically embedded between the two circular rings. The number of the air induction plates (221) is equal to the number of the wheel blades (211). The air induction plates (221) are in the shape of circular arc plates and are tangentially connected to the wheel blades (211) to form hyperbolic plates.

4. The set-type vertical axis breeze power generation device according to claim 3 is characterized in that: The cavity between two adjacent wheel blades (211) forms a wind receiving cavity (230), and the cavity between two adjacent air induction plates (221) forms an air inlet duct (240), and the ratio of the inner and outer opening areas of the air inlet duct (240) is between 1:3 and 1:

2.

5. The sheathed vertical axis breeze power generation device according to claim 4 is characterized in that: The wind guide tube (220) guides all wind beams to the plurality of wind inlet ducts (240), turns into the wind receiving cavity (230), and then impacts the concave surfaces of the plurality of wheel blades (211) to perform work. The wind beams are no longer refracted on the convex surfaces of the plurality of wheel blades (211) and are not disturbed by the leeward impact, so that all wind beams are converted into kinetic energy for driving the wind wheel (210).

6. The sheathed vertical axis breeze power generation device according to claim 5, characterized in that: A wind induction portion (300) rotating around the wind guide tube (220) is provided at one side half of the wind guide tube (220), and the wind induction portion (300) comprises a wind induction box (310) for increasing the speed of the wind beam and a servo motor (320) for driving the wind induction box (310) to rotate; a wind direction sensor (400) is installed on the top surface of the wind induction box (310); after the wind direction sensor (400) detects wind direction information, it converts the information into an electrical signal and transmits it to a motor control system in a wireless manner; after the motor control system receives the signal from the wind direction sensor, it controls the servo motor (320) to start according to the size and direction of the signal, thereby driving the wind induction box (310) to rotate to be consistent with the direction of the wind direction sensor (400).

7. The sheathed vertical axis breeze power generation device according to claim 6, characterized in that: The front and rear ends of the draft box (310) are open and a circular arc opening (313) is provided at the rear end. The circular arc opening (313) is adapted to be snap-fitted to the outer side of the air guide tube (220). A plurality of wind baffles (311) are provided at equal intervals between the upper and lower surfaces of the draft box (310). The wind baffles (311) are arranged side by side along the front and rear directions of the draft box (310), and the cavity between two adjacent wind baffles (311) forms a speed increasing path (312).

8. The sheathed vertical axis breeze power generation device according to claim 7 is characterized in that: The bottom of the induced draft box (310) is fixedly connected to a suspension frame (314), a rear end of the suspension frame (314) is provided with a rotating sleeve (315) sleeved with the evacuation pipe (100), a bottom outer wall of the rotating sleeve (315) is sleeved with a gear ring (316), and the top of the output end of the servo motor (320) is coaxially connected to a transmission gear (321) meshing with the gear ring (316).

9. The sheathed vertical axis breeze power generation device according to claim 8, characterized in that: Both sides of the front end of the draft box (310) are rotatably connected to wind blocking plates (330), and a fixing cylinder (317) is vertically arranged in the middle of both sides of the front end of the draft box (310), and a bayonet (331) for engaging with the fixing cylinder (317) is provided in the middle of the wind blocking plate (330).

10. The sheathed vertical axis breeze power generation device according to claim 9, characterized in that: A fixing sleeve (322) is connected to one side of the servo motor (320), and a fixing platform (110) and a supporting platform (120) are provided at intervals on the top outer wall of the emptying tube (100). The fixing sleeve (322) is fixedly connected to the fixing platform (110) by bolts, and the rotating sleeve (315) is sleeve-fitted with the supporting platform (120).

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