A vertical axis wind power generation system

Abstract

This invention relates to a vertical axis wind power generation system, belonging to the technical field of wind power equipment. It includes a generator set, a drive shaft, and a wind-driven mechanism. The drive shaft is vertically connected to the input end of the generator set. The wind-driven mechanism is divided into multiple wind-driven components along the circumferential direction of the drive shaft, and further divided into multiple wind-driven units along the radial direction of the drive shaft. Since the multiple wind-driven units are detachably connected to each other along the direction of the drive shaft, and the wind-driven unit closest to the drive shaft is fixed on the outer peripheral wall of the drive shaft, the volume of a single wind-driven unit can be reduced, lowering the manufacturing, transportation, and assembly difficulties of the wind-driven unit. This breaks through the structural constraints of traditional wind turbine blades, reduces the manufacturing, transportation, and assembly costs of the vertical axis wind power generation system, and expands its application scope.

Description

Technical Field

[0001] This invention relates to the field of wind power generation equipment technology, and in particular to a vertical axis wind power generation system. Background Technology

[0002] With the continuous introduction of carbon peaking and carbon neutrality policies, and people's deeper understanding of the concept of green development, wind power generation is receiving increasing attention from the government and major enterprises, and its share in the power industry is also increasing. At the same time, people's requirements for wind energy utilization are also getting higher and higher.

[0003] Traditional wind power systems generally consist of an impeller and a generator set. The impeller includes blades and a hub. The blades are locked to the hub and drive the rotor of the generator set to rotate under the action of wind energy, thereby converting wind energy into electrical energy. For example, patent number CN112012876A, entitled "Wind Power Generation System," also utilizes wind energy to drive the impeller to rotate and provide kinetic energy for the power generation system. As is well known, the efficiency of wind energy utilization depends on the size of the blades and their windward area. The larger the blade volume and the larger the windward area, the higher the wind energy utilization rate. However, the manufacturing, transportation, and assembly difficulties of large blades increase exponentially with the increase in blade size, resulting in high manufacturing, transportation, and installation costs. This limits the widespread application of wind turbine power generation systems in some economically disadvantaged areas.

[0004] Therefore, how to design wind power generation systems that are easy to manufacture, transport, and assemble is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a vertical axis wind power generation system that solves the technical problems of high manufacturing difficulty, high transportation difficulty, and high assembly difficulty of existing large-blade wind power generation systems.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a vertical axis wind power generation system, comprising: a generator set, a drive shaft, and a wind-driven mechanism.

[0007] The transmission main shaft is vertically connected to the input end of the generator set;

[0008] The pneumatic mechanism includes multiple pneumatic components, each of which includes multiple pneumatic units. The multiple pneumatic components extend radially along the main transmission shaft and are distributed on the outer periphery of the main transmission shaft. The multiple pneumatic units of the same pneumatic component are distributed radially along the main transmission shaft, and the adjacent pneumatic units are detachably connected to each other. The pneumatic unit closest to the main transmission shaft is detachably connected to the outer periphery of the main transmission shaft.

[0009] The beneficial effects of this invention are as follows: by dividing the wind turbine mechanism into multiple wind turbine components along the circumferential direction of the transmission shaft, and further dividing the wind turbine components into multiple wind turbine units along the radial direction of the transmission shaft, since the multiple wind turbine units are detachably connected to each other along the direction of the transmission shaft and the wind turbine unit closest to the transmission shaft is fixed on the outer peripheral wall of the transmission shaft, the volume of a single wind turbine unit can be reduced, and the manufacturing, transportation and assembly difficulties of the wind turbine unit can be reduced. This breaks through the structural constraints of traditional wind turbine blades, reduces the manufacturing, transportation and assembly costs of vertical shaft wind power generation systems, and expands the scope of application.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, each of the pneumatic units includes a fixed frame, a pneumatic plate, a first rotating shaft, a first linkage block, and a first return spring. Multiple fixed frames of the pneumatic units are distributed radially along the transmission main shaft, and adjacent fixed frames are detachably connected to each other. The fixed frame closest to the transmission main shaft is detachably connected to the outer periphery of the transmission main shaft. The pneumatic plate is arranged within the fixed frame, with its two sides being a working surface and a non-working surface, respectively. The first rotating shaft is located on one side of the working surface of the pneumatic plate and is rotatably connected to the fixed frame in a direction parallel to the axis of the transmission main shaft. The first rotating shaft is fixed to the pneumatic plate. The first linkage block is fixed to the first rotating shaft. One end of the first return spring is fixed to the fixed frame, and the other end is fixed to the first linkage block.

[0012] As is common knowledge, when wind travels in a straight line, it blows the pneumatic components distributed around the drive shaft. Since the pneumatic components on one side of the drive shaft will generate the same force as the drive shaft in the same direction, and the pneumatic components on the opposite side will generate the opposite force, the two opposite sides of the drive shaft are divided into the working area and the non-working area.

[0013] The further beneficial effects of the above are as follows: By correspondingly rotatably connecting the first rotating shaft to the working surface of the wind-driven plate, and since the first rotating shaft is elastically connected to the fixed frame through the first linkage block and the first return spring; when the wind-driven unit is in the working zone, the working surface of its wind-driven plate faces the wind, and the wind propagating in a straight line blows the wind-driven plate to rotate about the axis of rotation of the first rotating shaft. Since the first return spring pulls the wind-driven plate in the opposite direction at this time, the wind-driven plate will remain stationary and drive the transmission shaft to rotate in its rotation direction with the help of wind energy; when the wind-driven unit is in the non-working zone, the non-working surface of its wind-driven plate faces the wind, and the wind propagating in a straight line blows the wind-driven plate to rotate about the axis of rotation of the first rotating shaft. When the first return spring pulls the pneumatic plate in the same direction, the pneumatic plate rotates, and the air is blown away along the gap left by the rotation of the pneumatic plate. It will not be able to generate a force opposite to the direction of rotation of the main shaft. That is to say, some of the pneumatic units around the main shaft are in the working zone and some are in the non-working zone. Since the pneumatic plate is elastically rotatably connected to the fixed frame through the first rotating shaft, the first linkage block and the first return spring, the pneumatic plate in the working zone will generate a driving force in the same direction as the main shaft, and the pneumatic plate in the non-working zone will not be able to generate a driving force opposite to the direction of rotation of the main shaft. This avoids the pneumatic plate in the non-working zone from blocking the rotation of the main shaft in the opposite direction, thus improving the wind energy conversion rate of the pneumatic mechanism.

[0014] Furthermore, there are two first linkage blocks and two first reset springs. The two first linkage blocks are respectively fixed to the top and bottom of the first rotating shaft; one end of the two first reset springs is respectively fixed to the top and bottom of the fixed frame and the other end is respectively fixed to the two first linkage blocks.

[0015] Furthermore, the pneumatic plate is an arc-shaped plate with its working surface being concave, and the arc-shaped center line of the arc plate is arranged perpendicular to the transmission main shaft.

[0016] Furthermore, the arc-shaped plate defines semi-circular openings at one end near the main drive shaft and the other end away from the main drive shaft; each pneumatic unit also includes a second rotating shaft, a baffle plate, a second linkage block, and a second return spring. The second rotating shaft is located on the side of the first rotating shaft away from the main drive shaft and is rotatably connected to the arc-shaped plate in a direction parallel to the axis of the first rotating shaft; the baffle plate is arranged at the opening of the arc-shaped plate away from the main drive shaft and fixed to the second rotating shaft; the second linkage block is fixed to the surface of the baffle plate near the second rotating shaft; one end of the second return spring is fixed to the first rotating shaft, and the other end is fixed to the second linkage block.

[0017] The further beneficial effects of the above are as follows: By arranging the wind deflector at the opening of the arc-shaped plate away from the main drive shaft, and since the wind deflector is rotatably connected to the second rotating shaft, and elastically connected to the first rotating shaft via the second linkage block and the second return spring, when the wind-driven unit is in the working zone, its wind deflector faces the wind at the end face near the main drive shaft. The wind propagating in a straight line blows the wind deflector around the axis of rotation of the second rotating shaft. Because the second return spring pulls the wind deflector in the opposite direction at this time, the wind deflector will remain stationary and intercept most of the wind energy, pushing the main drive shaft to rotate in its rotational direction. When the wind-driven unit is in the non-working zone, its wind deflector faces the wind at the end face away from the main drive shaft. The wind propagating in a straight line blows the wind deflector around the axis of rotation of the second rotating shaft. The shaft rotates along its axis of rotation. Since the second return spring pulls the baffle plate in the same direction, the baffle plate rotates, and the wind is blown away through the gap left by the rotating baffle plate. This prevents the generation of a force opposite to the rotation of the main shaft. In other words, some of the pneumatic units around the main shaft are in the working zone, while others are in the non-working zone. Because the baffle plate is elastically connected to the first shaft via the second shaft, the second linkage block, and the second return spring, the baffle plate in the working zone will generate a driving force in the same direction as the main shaft, while the baffle plate in the non-working zone will not generate a driving force opposite to the rotation of the main shaft. This prevents the baffle plate in the non-working zone from blocking the rotation of the main shaft, thus improving the wind energy conversion rate of the pneumatic mechanism.

[0018] Furthermore, it also includes multiple braking mechanisms, all of which are arranged below the multiple pneumatic units on the same horizontal plane and can simultaneously lock or release the multiple pneumatic units on the same horizontal plane.

[0019] Furthermore, each of the braking mechanisms includes a brake disc and multiple brakes, the brake disc being horizontally arranged below the multiple pneumatic units on the same horizontal plane; the multiple brakes are fixed at intervals to the edge of the brake disc and can simultaneously lock or release the multiple pneumatic units on the same horizontal plane.

[0020] The further beneficial effect of adopting the above is that when the wind force exceeds the limit, multiple brakes can simultaneously lock multiple wind-driven units on the same horizontal plane, preventing the wind-driven units from being damaged due to rapid rotation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a vertical axis wind power generation system according to the present invention;

[0022] Figure 2 for Figure 1 A magnified view of a portion of point A;

[0023] Figure 3 This is a three-dimensional structural diagram of a single wind turbine unit in a vertical axis wind power generation system according to the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Transmission main shaft; 2. Pneumatic assembly; 21. Pneumatic unit; 211. Fixed frame; 212. Pneumatic plate; 213. First rotating shaft; 214. First linkage block; 215. First return spring; 216. Second rotating shaft; 217. Wind deflector; 218. Second linkage block; 219. Second return spring; 3. Braking mechanism; 31. Brake disc; 32. Brake. Detailed Implementation

[0026] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] like Figure 1 As shown, a vertical axis wind power generation system includes: a generator set, a drive shaft 1, and a wind-driven mechanism.

[0028] The transmission main shaft 1 is vertically connected to the input end of the generator set;

[0029] The pneumatic mechanism includes multiple pneumatic components 2, each pneumatic component 2 includes multiple pneumatic units 21. The multiple pneumatic components 2 extend radially along the transmission main shaft 1 and are distributed on the outer periphery of the transmission main shaft 1. The multiple pneumatic units 21 of the same pneumatic component 2 are distributed radially along the transmission main shaft 1 and the adjacent pneumatic units 21 are detachably connected to each other. The pneumatic unit 21 closest to the transmission main shaft 1 is detachably connected to the outer periphery of the transmission main shaft 1.

[0030] like Figure 3 As shown, in some specific embodiments, each pneumatic unit 21 includes a fixed frame 211, a pneumatic plate 212, a first rotating shaft 213, a first linkage block 214, and a first return spring 215. The multiple fixed frames 211 of the multiple pneumatic units 21 are distributed along the radial direction of the transmission main shaft 1, and the fixed frames 211 adjacent to each other are detachably connected. The fixed frame 211 closest to the transmission main shaft 1 is detachably connected to the outer periphery of the transmission main shaft 1. The pneumatic plate 212 is arranged inside the fixed frame 211, and its two sides are respectively the working surface and the non-working surface. The first rotating shaft 213 is located on one side of the working surface of the pneumatic plate 212 and is rotatably connected to the fixed frame 211 in a direction parallel to the axis of the transmission main shaft 1. The first rotating shaft 213 is fixed to the pneumatic plate 212. The first linkage block 214 is fixed to the first rotating shaft 213. One end of the first return spring 215 is fixed to the fixed frame 211, and the other end is fixed to the first linkage block 214.

[0031] like Figure 3As shown, in some specific embodiments, there are two first linkage blocks 214 and two first reset springs 215. The two first linkage blocks 214 are respectively fixed to the top and bottom of the first rotating shaft 213; one end of the two first reset springs 215 is respectively fixed to the top and bottom of the fixed frame 211 and the other end is respectively fixed to the two first linkage blocks 214.

[0032] like Figure 2 As shown, in some specific embodiments, the pneumatic plate 212 is an arc-shaped plate with its working surface being the concave side, and the arc center line of the arc plate is arranged perpendicular to the transmission main shaft 1.

[0033] like Figure 3 As shown, in some specific embodiments, the arc-shaped plate defines a semi-circular opening at one end near the transmission main shaft 1 and the other end away from the transmission main shaft 1; each pneumatic unit 21 also includes a second rotating shaft 216, a baffle plate 217, a second linkage block 218, and a second return spring 219. The second rotating shaft 216 is located on the side of the first rotating shaft 213 away from the transmission main shaft 1 and is rotatably connected to the arc-shaped plate in a direction parallel to the axis of the first rotating shaft 213; the baffle plate 217 is arranged at the opening at the end of the arc-shaped plate away from the transmission main shaft 1 and is fixed on the second rotating shaft 216; the second linkage block 218 is fixed on the plate surface of the baffle plate 217 near the second rotating shaft 216; one end of the second return spring 219 is fixed on the first rotating shaft 213, and the other end is fixed on the second linkage block 218.

[0034] like Figure 1 As shown, in some specific embodiments, multiple braking mechanisms 3 are also included. The multiple braking mechanisms 3 are arranged below the multiple pneumatic units 21 on the same horizontal plane and can simultaneously lock or release the multiple pneumatic units 21 on the same horizontal plane.

[0035] like Figure 1 As shown, in some specific embodiments, each braking mechanism 3 includes a brake disc 31 and multiple brakes 32. The brake disc 31 is horizontally arranged below multiple pneumatic units 21 on the same horizontal plane. Multiple brakes 32 are fixed at intervals on the edge of the brake disc 31 and can simultaneously lock or release multiple pneumatic units 21 on the same horizontal plane.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical axis wind power generation system, characterized in that, include: Generator set, drive shaft (1) and pneumatic mechanism, The transmission main shaft (1) is vertically connected to the input end of the generator set; The pneumatic mechanism includes multiple pneumatic components (2), each pneumatic component (2) includes multiple pneumatic units (21), the multiple pneumatic components (2) extend radially along the transmission main shaft (1) and are distributed on the outer periphery of the transmission main shaft (1), the multiple pneumatic units (21) of the same pneumatic component (2) are distributed radially along the transmission main shaft (1) and the pneumatic units (21) adjacent to each other are detachably connected to each other, and the pneumatic unit (21) closest to the transmission main shaft (1) is detachably connected to the outer periphery of the transmission main shaft (1); Each of the aforementioned wind-driven units (21) includes a fixed frame (211), a wind-driven plate (212), a first rotating shaft (213), a first linkage block (214), and a first return spring (215). The multiple fixed frames (211) of the multiple wind-driven units (21) are distributed along the radial direction of the transmission main shaft (1), and adjacent fixed frames (211) are detachably connected to each other. The fixed frame (211) closest to the transmission main shaft (1) is detachably connected to the outer periphery of the transmission main shaft (1). The wind-driven plate (212) is arranged on the fixed frame (211). The fixed frame (211) has a working surface and a non-working surface on its two sides, respectively; the first rotating shaft (213) is located on one side of the working surface of the wind-driven plate (212) and is rotatably connected to the fixed frame (211) in a direction parallel to the axis of the transmission main shaft (1), and the first rotating shaft (213) is fixed to the wind-driven plate (212); the first linkage block (214) is fixed on the first rotating shaft (213); one end of the first return spring (215) is fixed on the fixed frame (211) and the other end is fixed on the first linkage block (214); There are two first linkage blocks (214) and two first return springs (215). The two first linkage blocks (214) are fixed to the top and bottom of the first rotating shaft (213) respectively; one end of the two first return springs (215) is fixed to the top and bottom of the fixed frame (211) respectively, and the other end is fixed to the two first linkage blocks (214) respectively. The wind-driven plate (212) is an arc-shaped plate with its working surface being concave. The arc-shaped center line of the arc plate is arranged perpendicular to the transmission main shaft (1). The arc-shaped plate defines a semi-circular opening at one end near the main transmission shaft (1) and at the other end away from the main transmission shaft (1); each of the pneumatic units (21) further includes a second rotating shaft (216), a wind deflector (217), a second linkage block (218), and a second return spring (219). The second rotating shaft (216) is located on the side of the first rotating shaft (213) away from the main transmission shaft (1) and is rotatably connected to the arc-shaped plate in a direction parallel to the axis of the first rotating shaft (213). The wind deflector (217) is arranged at the opening at the end of the arc-shaped plate away from the main transmission shaft (1) and is fixed on the second rotating shaft (216). The second linkage block (218) is fixed on the plate surface of the wind deflector (217) near the second rotating shaft (216). One end of the second return spring (219) is fixed on the first rotating shaft (213), and the other end is fixed on the second linkage block (218).

2. The vertical axis wind power generation system according to claim 1, characterized in that, It also includes multiple braking mechanisms (3), which are arranged below the multiple pneumatic units (21) on the same horizontal plane and can simultaneously lock or release the multiple pneumatic units (21) on the same horizontal plane.

3. A vertical axis wind power generation system according to claim 2, characterized in that, Each of the braking mechanisms (3) includes a brake disc (31) and a plurality of brakes (32). The brake disc (31) is horizontally arranged below the plurality of pneumatic units (21) on the same horizontal plane. The plurality of brakes (32) are fixed at intervals to the edge of the brake disc (31) and can simultaneously lock or release the plurality of pneumatic units (21) on the same horizontal plane.

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