Combined wind power generation device

Abstract

The present invention discloses a combined wind power generation device. By sequentially arranging a wind tube type power generation component, a vertical axis power generation component and a vertical power generation component on a main shaft from top to bottom, the device can adapt to various complex environments. After wind blows in from the air inlet of the wind tube frame, the first fan blade of the first generator drives the inner rotor to rotate, and at the same time, the second fan blade drives the outer rotor to rotate, and the rotation directions are opposite. The present invention reasonably utilizes the effect of relative motion, greatly increases the relative motion rate of the rotor and the outer rotor, has a simple and reasonable structure, and effectively improves the utilization rate of wind energy. The wind tube type power generation component, the vertical axis power generation component and the vertical power generation component are combined on the same main shaft, and the device has stronger applicability to different environments, reasonably utilizes the effective space, and has the same power generation efficiency, but occupies less space, has high energy utilization, high power generation efficiency, and a large generator stability factor.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a combined wind power generation device. Background Art

[0002] The principle of current power generation equipment is to transfer mechanical energy to the power generation equipment, drive the rotor of the power generation equipment to work, and convert mechanical energy into electrical energy. Usually, the input power of the power generation equipment is driven by a steam turbine, a water turbine or an internal combustion engine to generate electricity. Generators are now used in industries such as wind power, wave power, temperature difference, etc., especially wind power generation, which is becoming more and more important.

[0003] There are many forms of wind power generation at present. One type is the horizontal axis wind turbine, which has the advantages of mature technology, simple structure and high wind energy utilization rate. However, it has the disadvantages of needing to track the wind direction during operation, needing to untie the entangled cables, high requirements for large-scale machine blade materials, high processing difficulty and difficulty in resisting strong winds. The other type is the vertical axis wind turbine, including S-type, H-type and Φ-type machines, etc. Its advantage is that it does not need to adjust the wind direction, and horizontal wind can generate electricity in all directions. However, it has the disadvantage of low wind energy utilization rate, and the power generation efficiency of various types of wind turbines is easily affected by the environment.

[0004] In view of this, there is an urgent need to improve the structure of existing wind power generation devices to enhance environmental adaptability and improve power generation efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing wind power generation devices have poor environmental applicability and low power generation efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a combined wind power generation device, including a main shaft, wherein the main shaft is provided with a wind tube type power generation assembly, a vertical axis power generation assembly and a vertical power generation assembly in sequence from top to bottom, and the wind tube type power generation assembly includes:

[0007] A blower frame is arranged at the top of the main shaft, with an air inlet and an air outlet arranged opposite to each other, and a horizontal rotation axis arranged inside, wherein the rotation axis is perpendicular to the center line of the air inlet and the air outlet;

[0008] A first generator is arranged in the wind tube frame and rotatably arranged at the end of the rotating shaft. The outer rotor of the generator is fixedly arranged on the outer rotor shaft and rotates together with the outer rotor shaft. The outer rotor shaft sleeve is arranged on the rotating shaft. The inner rotor of the generator is fixed to the rotating shaft and rotates together with the rotating shaft. Magnetic steel is arranged around the inner side of the two end covers of the inner rotor. The outer rotor is arranged around the outer side of the magnetic steel and the inner rotor. The connecting part of the first motor extends into the wind tube frame and is fixedly connected to the outer rotor shaft by a thread. The shaft of the generator is connected to the rotating shaft by a key.

[0009] The first fan blade is spiral-shaped, and its two ends are fixed to the rotating shaft by two mutually perpendicular bolts, and is used to drive the rotating shaft to rotate, thereby driving the rotor inside the generator winding to rotate;

[0010] The second fan blade is arranged side by side with a spiral direction opposite to that of the first fan blade and is fixed on the outer rotor shaft to drive the outer rotor shaft of the first generator, thereby driving the outer rotor to rotate. The first generator is fixed to the second fan blade with flange bolts.

[0011] In the above technical solution, a connecting base plate is provided at the bottom of the wind duct frame, and the connecting base plate is fixedly connected to the corresponding wind duct fixing plate at the top of the main shaft by bolts, and the wind duct frame is rotatably arranged at the top of the main shaft.

[0012] In the above technical solution, the opening size at the air inlet of the wind duct frame gradually decreases to the first fan blade and / or the second fan blade.

[0013] In the above technical solution, the vertical axis power generation assembly includes a first vertical axis power generation unit, a second vertical power generation unit and a second generator, the second motor is arranged between the first vertical axis power generation unit and the second vertical power generation unit, and the first vertical axis power generation unit and the second vertical power generation unit have opposite rotation directions.

[0014] In the above technical solution, the first vertical axis power generation unit includes:

[0015] A first impeller is composed of a plurality of arc-shaped strips fixed around the vertical axis fixing frame, and the vertical axis fixing frame is rotatably sleeved on the main shaft and rotates on the main shaft;

[0016] The second impeller has a spiral air guide plate arranged around the vertical axis fixing frame, is arranged in the space surrounded by the first impeller, and is fixed on the vertical axis fixing frame.

[0017] In the above technical solution, the second impeller includes an upper cover plate and a lower cover plate, the upper and lower ends of the air guide plate are respectively fixed to the upper cover plate and the lower cover plate, and there is a gap between the air guide plate and the vertical axis fixing frame.

[0018] In the above technical solution, the vertical axis power generation assembly and the vertical power generation assembly are both connected to the main shaft through bearings.

[0019] In the above technical solution, the second generator has the same structure as the first generator and is arranged on the upper part of the second vertical axis power generation unit.

[0020] In the above technical solution, the vertical power generation assembly includes two vertical power generation units with opposite rotation directions, and the vertical power generation units include:

[0021] A third generator, having the same structure as the first generator, is disposed between the two vertical power generation units;

[0022] A plurality of wind-catching rods are transversely fixed on both sides of a vertical fixing frame, are perpendicular to the main axis and are symmetrically arranged about the main axis, and the vertical fixing frame is rotatably arranged on the main axis.

[0023] In the above technical solution, the wind-catching rod is provided with wind-catching grooves, and the opening directions of the symmetrically arranged wind-catching grooves are opposite.

[0024] Compared with the prior art, a combined wind power generation device of the present invention can adapt to various complex environments by arranging a wind tube type power generation component, a vertical axis power generation component and a vertical power generation component on the main shaft in sequence from top to bottom. After the wind blows in from the air inlet of the wind tube frame, the first fan blade of the first generator drives the inner rotor to rotate, and at the same time, the second fan blade drives the outer rotor to rotate, and the rotation directions are opposite, so as to reasonably utilize the effect of relative motion, greatly increase the relative motion rate of the rotor and the outer rotor, have a simple and reasonable structure, and effectively improve the utilization rate of wind energy. By combining the wind tube type power generation component, the vertical axis power generation component and the vertical power generation component on the same main shaft, it has stronger applicability to different environments, reasonably utilizes the effective space, and has the same power generation efficiency, occupies less space, has high energy utilization and power generation efficiency, reduces costs, and has a large generator stability coefficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view of a combined wind power generation device in the present invention;

[0026] Figure 2 It is a side view of a combined wind power generation device in the present invention;

[0027] Figure 3 A cross-sectional view of a wind tube type power generation assembly of a combined wind power generation device in the present invention;

[0028] Figure 4 A front view of a vertical axis power generation assembly of a combined wind power generation device in the present invention;

[0029] Figure 5 It is a front view of a vertical power generation assembly of a combined wind power generation device in the present invention;

[0030] Figure 6 For the present invention Figure 3 A partial enlarged view of point A in the middle.

[0031] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0032] 100 main shaft, 200 wind tube type power generation assembly, 300 vertical axis power generation assembly, 400 vertical power generation assembly, 201 wind tube frame, 202 air outlet, 203 air inlet, 204 rotating shaft, 205 first generator, 2051 inner rotor, 2052 outer rotor shaft, 2053 magnetic steel, 2054 outer rotor, 206 first fan blade, 207 second fan blade, 301 first vertical axis power generation unit, 302 second vertical power generation unit, 303 second generator, 3011 first impeller, 3012 vertical axis fixing frame, 3013 second impeller, 3014 wind guide plate, 3015 upper cover plate, 3016 lower cover plate, 401 vertical power generation unit, 402 third generator, 4011 wind catcher rod, 4012 vertical fixing frame, 4013 wind catcher slot. DETAILED DESCRIPTION

[0033] The present invention provides a combined wind power generation device, which can improve environmental adaptability and power generation efficiency. The present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figures 1 to 6 As shown, the present invention provides a combined wind power generation device, including a main shaft 100, the main shaft 100 is provided with a wind cylinder type power generation assembly 200, a vertical axis power generation assembly 300, and a vertical power generation assembly 400 from top to bottom, and the wind cylinder type power generation assembly 200 includes:

[0035] The air duct frame 201 is arranged at the top of the main shaft 100, and has an air outlet 202 and an air inlet 203 opposite to each other, and a horizontal rotating shaft 204 is arranged inside, and the rotating shaft 204 is perpendicular to the center line of the air inlet 203 and the air outlet 202;

[0036] The first generator 205 is arranged in the wind tube frame 201 and is rotatably arranged at the end of the rotating shaft 204. The outer rotor 2054 of the generator is rotatably arranged on the outer rotor shaft 2052. The outer rotor shaft 2052 is sleeved on the rotating shaft 204. The inner rotor 2051 of the generator rotates on the rotating shaft 204. The left and right end covers of the generator on both sides of the inner rotor 2051 are symmetrically provided with magnets 2053. The outer rotor 2054 is arranged below the magnets 2053 and the inner rotor 2051. The inner rotor 2051 rotates on the rotating shaft 204.

[0037] The first fan blade 206 is spirally shaped and is disposed on the rotating shaft 204. The first fan blade 206 rotates around the rotating shaft 204 to drive the inner rotor 2051.

[0038] The second fan blade 207 has a spiral direction opposite to that of the first fan blade 206 , and is disposed side by side with the first fan blade 206 on the outer rotor shaft 2052 for driving the outer rotor 2054 of the first generator 205 .

[0039] In this embodiment, the main shaft 100 is provided with a wind tube type power generation assembly 200, a vertical axis power generation assembly 300, and a vertical power generation assembly 400 in sequence from top to bottom, so that it can adapt to various complex environments, and after the wind is blown in from the air inlet 203 of the wind tube frame 201, the first fan blade 206 of the first generator 205 drives the inner rotor 2051 to rotate, and at the same time, the second fan blade 207 drives the outer rotor 2054 to rotate, and the rotation directions are opposite. The effect of relative motion is reasonably utilized, and the relative motion rate between the generator rotor and the outer rotor 2054 is greatly increased. The structure is simple and reasonable, and the utilization rate of wind energy is effectively improved. In addition, by combining the wind tube type power generation assembly 200, the vertical axis power generation assembly 300, and the vertical power generation assembly 400 on the same main shaft 100, it is more applicable to different environments, reasonably utilizes the effective space, and has the same power generation efficiency. It occupies less space, reduces the cost of the generator, has high energy utilization, high power generation efficiency, and a large generator stability factor.

[0040] Furthermore, if Figure 1 and Figure 3 The right end cover of the first generator 205 passes through the second fan blade 207 and is connected to the outer rotor shaft 2052 by threads. The connection mechanism is simple and easy to install. The thickness of the bearing seat is effectively increased, making the rotation of the second fan blade 207 more stable and improving the stability of the power generation device. At the same time, its axial dimension is small, making the structure of the wind tube type power generation assembly 200 more compact.

[0041] Specifically, the outer rotor 2054 is arranged on the outer rotor shaft 2052, and the outer rotor shaft 2052 is sleeved on the rotating shaft 204 and is driven by the second fan blade 207 under the influence of wind force. The inner rotor 2051 is directly connected to the rotating shaft 204 and is driven by the first fan blade 206 under the influence of wind force. The spiral directions of the first fan blade 206 and the second fan blade 207 are opposite, so that the first fan blade 206 and the second fan blade 207 rotate in opposite directions under the action of wind force. That is, when the inner rotor 2051 and the outer rotor 2054 are operating to generate electricity under the action of wind force, when they rotate 360°, they can cut the secondary magnetic flux lines, generate secondary potential and charge current, and can achieve a power generation power nearly three times that of an ordinary generator, greatly improving the power generation efficiency.

[0042] Among them, the first generator 205 and the second wind blade 207 are fixed with flange bolts. During the installation process, multiple (such as 8) bolts can be used to connect the first generator 205 and the second wind blade 207. First, the first generator 205 is assembled with a part (such as 4) of bolts, temporarily fixed as a whole, and then installed on the wind blade with another part (4) of bolts, avoiding the tedious process of removing the bolts when fixing the second wind blade 207, making the installation process easier.

[0043] A rotatable shaft perpendicular to the first generator 205 is designed to be installed under the fixing frame of the first generator 205. The shaft and the first generator 205 are not on the same center line. Since the shaft is offset from the center, the gravity of the generator and the support are not in a central position. The wind always pushes the wind to keep it at the air inlet 203, facing the windward side, while the air outlet 202 always stays at the air outlet 202, thereby reducing the yaw device of the wind turbine, reducing costs, and improving energy utilization. The structure is simple, safe and effective, reducing the damage rate of the generator, and improving energy utilization.

[0044] A collector ring is designed to be mounted on the central axis of the first generator 205, and a conductive device is designed to be mounted at a position corresponding to the outer circle of the collector ring.

[0045] A shaft perpendicular to the ground is designed and installed below the first generator 205, a bearing is installed outside the shaft, a sleeve is installed on the outer ring of the bearing, and the sleeve is supported and installed together with the first generator 205. A collector ring is designed and installed on the shaft of the fixed frame, and a conductive device is designed and installed on the shaft. The terminal of the conductive device is connected to the conductive device on the shaft of the first generator 205 through a wire. The current generated by the rotation of the first generator 205 under the action of wind passes through the collector ring on the central axis of the first generator 205 to the conductive device, to the next conductive device, and then to the next collector ring, and is then led out.

[0046] In one embodiment of the present invention, preferably, a connecting base plate is provided at the bottom of the wind duct frame 201, and the connecting base plate is fixedly connected to the corresponding wind duct fixing plate at the top of the main shaft 100 by bolts, and the wind duct frame 201 is rotatably arranged at the top of the main shaft 100.

[0047] The main shaft 100, the bottom plate rotating shaft of the first generator 205, and a collector ring on a rotating shaft of the first generator 205 are designed at the same central position.

[0048] In this embodiment, a connecting base plate is provided at the bottom of the wind duct frame 201, and the connecting base plate is fixedly connected to the corresponding wind duct fixing plate at the top of the main shaft 100 by bolts, thereby connecting and fixing the wind duct frame 201 to the main shaft 100, thereby ensuring the tightness and stability of the connection between the wind duct frame 201 and the main shaft 100, avoiding the problem of the wind duct frame 201 falling off under the action of wind, and effectively improving the safety of the wind power generation device.

[0049] The wind tube fixing plate can be fixed to the top of the main shaft 100 by welding.

[0050] In one embodiment of the present invention, preferably, the opening size at the air inlet 203 of the air duct frame 201 gradually decreases to the first fan blade 206 and / or the second fan blade 207 .

[0051] In this embodiment, by gradually reducing the opening size at the air inlet 203 of the wind duct frame 201 to the first fan blade 206 and / or the second fan blade 207, the wind speed from the inlet to the first fan blade 206 and / or the second fan blade 207 is gradually increased, and at the same time, the rotation speed of the first fan blade 206 and / or the second fan blade 207 can be increased, thereby improving the utilization rate of wind energy and thereby improving the power generation efficiency of the wind turbine.

[0052] In one embodiment of the present invention, preferably, the vertical axis power generation assembly 300 includes a first vertical axis power generation unit 301, a second vertical power generation unit 302 and a second generator 303, the second motor is arranged between the first vertical axis power generation unit 301 and the second vertical power generation unit 302, and the rotation directions of the first vertical axis power generation unit 301 and the second vertical power generation unit 302 are opposite.

[0053] In this embodiment, two vertical axis power generation units with opposite directions are provided, the first vertical axis power generation unit 301 drives the rotor of the second motor, and the second vertical axis power generation unit drives the stator of the second motor. Similar to the first generator 205, under the action of wind, when the first vertical axis power generation unit 301 and / or the second vertical axis power generation unit rotates 360°, it can cut the secondary magnetic flux lines and generate secondary potential and electric charge current, which can achieve nearly three times the power generation power of ordinary generators, greatly improving the power generation efficiency. The second generator 303 is connected in series with the output end of the first generator 205 to generate electricity, further improving the power generation efficiency.

[0054] In one embodiment of the present invention, preferably, the first vertical axis power generation unit 301 comprises:

[0055] The first impeller 3011 is composed of a plurality of arc-shaped strips fixed around a vertical axis fixing frame 3012. The vertical axis fixing frame 3012 is rotatably mounted on the main shaft 100 and rotates on the main shaft 100.

[0056] The second impeller 3013 is provided with a spiral air guide plate 3014 around the vertical axis fixing frame 3012 , is disposed in the space surrounded by the first impeller 3011 , and is fixed on the vertical axis fixing frame 3012 .

[0057] In this embodiment, the first impeller 3011 is formed in a lantern shape by a plurality of arc-shaped strips surrounding an upper rotating shaft in the center, and the second impeller 3013 is arranged in the space surrounded by the first impeller 3011. The first impeller 3011 has a large kinetic energy when rotating and generates a large inertia to keep the upper impeller assembly rotating continuously when the wind force is small or there is no wind.

[0058] In one embodiment of the present invention, preferably, the second impeller 3013 includes an upper cover plate 3015 and a lower cover plate 3016, the upper and lower ends of the air guide plate 3014 are respectively fixed to the upper cover plate 3015 and the lower cover plate 3016, and there is a gap between the air guide plate 3014 and the vertical axis fixing frame 3012.

[0059] In this embodiment, the second impeller 3013 includes an upper cover plate 3015 and a lower cover plate 3016, and a plurality of spiral air guide plates 3014 are arranged around the upper rotating shaft. The upper and lower ends of the air guide plate 3014 are respectively fixed to the upper cover plate 3015 and the lower cover plate 3016. There is a gap between the air guide plate 3014 and the upper rotating shaft, so that the gas entering from the outer end of the air guide plate 3014 is discharged around the upper rotating shaft, and will continue to act on the inner end of another air guide plate 3014 when being discharged, thereby making fuller use of wind force.

[0060] In one embodiment of the present invention, preferably, the vertical axis power generation assembly 300 and the vertical power generation assembly 400 are both connected to the main shaft 100 via bearings.

[0061] In this embodiment, the vertical axis power generation assembly 300 and the vertical power generation assembly 400 are connected to the main shaft 100 through bearings, so that the vertical axis power generation assembly 300 and the vertical power generation assembly 400 can rotate on the main shaft 100.

[0062] The shaft on the wind tube frame 201, the collector ring on the shaft of the wind tube frame 201, the power generation assembly 300, the vertical power generation assembly 400, the main shaft 100, and the bearing on the main shaft 100 are arranged at the same center.

[0063] In one embodiment of the present invention, preferably, the second generator 303 has the same structure as the first generator 205 and is disposed on the upper part of the second vertical axis power generation unit.

[0064] In this embodiment, the second generator 303 is arranged on the upper part of the second vertical axis power generation unit, so that the second generator 303 is between the first vertical axis power generation unit 301 and the second vertical axis power generation unit, and the first vertical axis power generation unit 301 drives the inner rotor 2051 of the second generator 303, and the second vertical axis power generation unit drives the outer rotor 2054 of the second generator 303.

[0065] In one embodiment of the present invention, preferably, the vertical power generation assembly 400 includes two vertical power generation units 401 with opposite rotation directions, and the vertical power generation unit 401 includes:

[0066] The third generator 402 has the same structure as the first generator 205 and is disposed between the two vertical power generation units 401;

[0067] A plurality of wind-catching rods 4011 are transversely fixed on both sides of a vertical fixing frame 4012 , are perpendicular to the main axis 100 and are symmetrically arranged about the main axis 100 , and the vertical fixing frame 4012 is rotatably arranged on the main axis 100 .

[0068] In this embodiment, the third generator 402 is disposed between two vertical power generation units 401, and the inner rotor 2051 and the outer rotor 2054 of the third generator 402 are driven by the two vertical power generation units 401 with opposite rotation directions.

[0069] In one embodiment of the present invention, preferably, the wind catching rod 4011 is provided with a wind catching slot 4013, and the opening directions of the symmetrically arranged wind catching slots 4013 are opposite.

[0070] In this embodiment, by providing the wind catching groove 4013 on the wind catching rod 4011, the area of ​​the wind catching rod 4011 affected by the wind force is effectively increased, thereby improving the utilization rate of wind energy.

[0071] A combined wind power generation device of the present invention can adapt to various complex environments by arranging a wind tube type power generation component, a vertical axis power generation component, and a vertical power generation component on the main shaft in sequence from top to bottom. After wind blows in from the air inlet of the wind tube frame, the first fan blade of the first generator drives the inner rotor to rotate, and at the same time, the second fan blade drives the outer rotor to rotate, and the rotation directions are opposite. The effect of relative motion is reasonably utilized to greatly increase the relative motion rate of the rotor and the outer rotor. The structure is simple and reasonable, and the utilization rate of wind energy is effectively improved. The wind tube type power generation component, the vertical axis power generation component, and the vertical power generation component are combined on the same main shaft, and the device has stronger applicability to different environments, reasonably utilizes the effective space, and has the same power generation efficiency, but occupies less space, has high energy utilization, high power generation efficiency, and a large generator stability factor.

[0072] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A combined wind power generation device, comprising a main shaft, characterized in that: The main shaft is provided with a wind-cylinder type power generation assembly, a vertical axis power generation assembly and a vertical power generation assembly in sequence from top to bottom, and the wind-cylinder type power generation assembly includes: A fan frame is arranged at the top of the main shaft, with an air inlet and an air outlet arranged opposite to each other, and a horizontal rotation axis arranged inside, wherein the rotation axis is perpendicular to the center line of the air inlet and the air outlet; A first generator is arranged in the wind tube frame and rotatably arranged at the end of the rotating shaft. The outer rotor of the generator is fixedly arranged on the outer rotor shaft and rotates together with the outer rotor shaft. The outer rotor shaft sleeve is arranged on the rotating shaft. The inner rotor of the generator is fixed to the rotating shaft and rotates together with the rotating shaft. A magnetic steel is arranged around the inner rotor. The outer rotor is arranged around the outer side of the magnetic steel and the inner rotor. The connecting part of the first generator extends into the wind tube frame and is fixedly connected to the outer rotor shaft by a thread. The shaft of the generator is connected to the rotating shaft by a key. The first fan blade is spiral-shaped, and its two ends are fixed to the rotating shaft by two mutually perpendicular bolts, so as to drive the rotating shaft to rotate, and further drive the inner rotor to rotate; A second fan blade is arranged side by side in a spiral direction opposite to that of the first fan blade, fixed on the outer rotor shaft, and used to drive the outer rotor shaft of the first generator, thereby driving the outer rotor to rotate, and the first generator is flange-bolted to the second fan blade; The vertical axis power generation assembly includes a first vertical axis power generation unit, a second vertical axis power generation unit and a second generator, wherein the second generator is arranged between the first vertical axis power generation unit and the second vertical axis power generation unit, and the first vertical axis power generation unit and the second vertical axis power generation unit rotate in opposite directions; The vertical power generation assembly includes two vertical power generation units with opposite rotation directions, and the vertical power generation units include: A third generator, having the same structure as the first generator, is disposed between the two vertical power generation units; A plurality of wind-catching rods are transversely fixed on both sides of a vertical fixing frame, are perpendicular to the main axis and are symmetrically arranged about the main axis, and the vertical fixing frame is rotatably arranged on the main axis.

2. A combined wind power generation device according to claim 1, characterized in that: A connecting bottom plate is arranged at the bottom of the wind duct frame, and the connecting bottom plate is fixedly connected to the corresponding wind duct fixing plate at the top end of the main shaft through bolts, and the wind duct frame is rotatably arranged at the top end of the main shaft.

3. A combined wind power generation device according to claim 1, characterized in that: The opening size of the air inlet of the wind tube frame gradually decreases to the first fan blade and / or the second fan blade.

4. A combined wind power generation device according to claim 1, characterized in that: The first vertical axis power generation unit comprises: The first impeller is composed of a plurality of arc-shaped strips fixed around a vertical axis fixing frame, wherein the vertical axis fixing frame is rotatably sleeved on the main shaft and rotates on the main shaft; The second impeller has a spiral air guide plate arranged around the vertical axis fixing frame, is arranged in the space surrounded by the first impeller, and is fixed on the vertical axis fixing frame.

5. A combined wind power generation device according to claim 4, characterized in that: The second impeller comprises an upper cover plate and a lower cover plate, the upper and lower ends of the air guide plate are respectively fixed to the upper cover plate and the lower cover plate, and there is a gap between the air guide plate and the vertical axis fixing frame.

6. A combined wind power generation device according to claim 1, characterized in that: The vertical axis power generation assembly and the vertical power generation assembly are both connected to the main shaft through bearings.

7. A combined wind power generation device according to claim 1, characterized in that: The second generator has the same structure as the first generator and is disposed on the upper portion of the second vertical axis power generation unit.

8. A combined wind power generation device according to claim 1, characterized in that: The wind-catching rod is provided with wind-catching grooves, and the opening directions of the symmetrically arranged wind-catching grooves are opposite.

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