A horizontal axis wind turbine with a ring rail tower and a work arm rotating shaft

Abstract

The application discloses a horizontal axis wind power generation device with a ring rail tower arm rotating shaft type, and belongs to the technical field of wind power generation.The horizontal axis wind power generation device with the ring rail tower arm rotating shaft type is provided with a ground large-diameter ring rail, a multi-layer arm structure and a central rotating shaft support, so that the carrying capacity and the structural stability of the device can be obviously improved, more horizontal axis wind turbine generators can be integrated, and the power generation capacity is higher.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and more specifically, to a horizontal axis wind power generation device with a ring rail tower boom rotating shaft. Background Technology

[0002] Currently, the mainstream wind power generation equipment is the horizontal axis wind turbine generator. Generally, large horizontal axis wind turbine generators adopt a single tower structure, with a set of rotor wind turbine generators installed on the top of the tower. However, if a high-power generator is to be installed, the tower is at risk of swaying and tipping over under extremely strong wind conditions.

[0003] Chinese patent CN119084232A discloses a four-arm rotating horizontal axis wind power generation device for towers. The device sets four cross-shaped support arms on the top of the tower and installs a set of horizontal axis wind turbines at the end of each support arm. At the same time, it sets a circular slide and roller group inside the tower to achieve rotational support, thereby improving the wind energy utilization rate per unit area and improving the stress state of the tower to a certain extent.

[0004] However, due to the limited diameter of the slide rails of the power generation unit, its load-bearing capacity is restricted. Its rotating support system is based on a circular slide rail at the top of the tower, and the diameter of the slide rail is limited by the structural dimensions of the tower, making it difficult to further expand. If the length of the support arm needs to be increased to install larger power units or more units, the overturning moment borne by the slide rail and its roller assembly will increase dramatically, making it difficult to support a larger number of horizontal axis wind turbine units. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a ring-rail tower boom-type horizontal axis wind power generation device. By setting up a large-diameter ground ring rail, a multi-layer boom structure, and a central boom support, this device can significantly improve its load-bearing capacity and structural stability, thereby supporting the integration of a larger number of horizontal axis wind turbine generators and achieving higher power generation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A ring-rail tower boom-type horizontal axis wind power generation device includes: a central tower, a central turntable, a first horizontal frame, a first boom, a second horizontal frame, and a second boom; the upper part of the central tower is provided with a boom sleeve, and a rotatable boom is installed inside the boom sleeve; The central turntable is located between the central tower and the horizontal frame, and is used to transfer part of the load and achieve rotational support; The first horizontal frame is connected to the top of the rotating shaft. Above the first horizontal frame, a first working arm, a second horizontal frame, and a second working arm are arranged sequentially from bottom to top. The first horizontal frame, the first working arm, the second horizontal frame, and the second working arm are installed on several vertically arranged towers. The bottom of the towers is provided with a roller platform. The bottom of the roller platform is equipped with several rollers that roll along the ground ring track, which is located on the foundation. The foundation can be connected with pipes, boxes and steel frames to form a combined ring floating platform on the water. The ring track tower boom swivel type horizontal axis wind power generation device is installed on the floating platform. The first and second booms are equipped with horizontal axis wind turbine generators. The roller platform rolls along the ground ring rail, driving the first and second booms and the wind turbine generators to rotate around the central tower, thus achieving yaw and wind alignment.

[0007] In a further technical solution, the first and second working arms are rectangular, and the wind turbine generator set is located at the end or middle of the working arm.

[0008] In a further technical solution, the roller platform is equipped with a height adjuster, which can synchronously adjust the height of each roller platform to distribute the load between the central turntable and the ring rail and adjust the stress state of the device.

[0009] A further technical solution is that the distance between the first and second working arms is greater than the diameter of the wind turbine blades of the installed unit; the length of the first and second working arms is greater than the diameter of the wind turbine blades to ensure the rotational movement of the blades.

[0010] A further technical solution is that the horizontal axis wind turbine generator set adopts a dual-unit docking installation method: at the same end of the same boom, two horizontal axis wind turbine generator sets of the same specifications are coaxially installed on the boom unit installation platform, with the three blades of the same unit having an angle of 120° with each other; after the two units are docked, the six blades are evenly distributed along the axial projection, with the angle between adjacent blades being about 60°, and the hubs of the two units are connected by a coupling. This connection method can effectively utilize space and improve power generation capacity.

[0011] A further technical solution is that the roller platform includes a support frame located at the bottom of the tower and several sets of rolling units located below the support frame; Each rolling unit includes an inner roller group and an outer roller group. The inner roller group and the outer roller group have basically the same structure. The inner roller group and the outer roller group are arranged on the same horizontal line along the radial direction of the ring rail. The inner roller assembly includes a limiting beam, a steel frame, roller shafts, rolling bearings, and rollers. The steel frame includes a horizontally arranged elastic plate and pillars perpendicularly arranged at both ends of the elastic plate. The upper surface of the elastic plate is provided with columns. Roller shafts are provided inside the pillars at both ends, and rolling bearings and rollers are sleeved on the roller shafts. The columns are provided with limiting beams. The limiting beams on the inner roller assembly and the outer roller assembly are respectively installed at both ends of the support frame, and the position of each rolling unit is fixed by the limiting beams. A shaft connecting rod is provided between the roller shafts of the inner roller assembly and the outer roller assembly, so that the direction of each rolling unit is consistent, and the axis of all rollers points horizontally to the center of the ring rail. The bottom of the support frame is equipped with a guide wheel shaft. The guide wheel is mounted on the guide wheel shaft through a bearing. The guide wheel maintains rolling contact with one side of the ring rail and is limited in the radial direction to prevent abnormal friction between the roller platform and the ring rail.

[0012] In a further technical solution, the ring track is set on the foundation, and the ring track includes an inner ring track and an outer ring track. The inner roller assembly and the outer roller assembly are respectively set in the inner ring track and the outer ring track. Limiting plates are provided on the inner ring track and the outer ring track to restrict the movement of the rollers within the ring track.

[0013] A further technical solution is provided, wherein the central turntable includes several annular vertical plates, annular pressure plates, annular sliders, annular grooves, and lubricant. The top of the annular vertical plates is connected to the first horizontal frame, and the bottom of the annular vertical plates is connected to the annular pressure plates. The annular sliders are bolted to the bottom of the annular pressure plates. The annular grooves are located above the central tower. The annular grooves are filled with lubricant and have several layers of sliding plates. The annular sliders are located on the sliding plates to achieve rotation.

[0014] Further technical solutions include a roller electric drive rotation yaw control system, installed on one or more roller platforms, for actively driving yaw and improving wind accuracy and response speed.

[0015] A further technical solution is provided where a vertical frame is provided at the center of the second working arm, and inclined support frames are provided on both sides of the vertical frame; inclined tie rods are provided between the second working arm and the vertical frame, and between the first working arm and the tower; relatively inclined towers are provided on the front and rear sides of the first horizontal frame, and the upper part of the inclined towers is connected to the first working arm or the second horizontal frame to enhance structural stability.

[0016] A further technical solution is that, for the horizontal axis wind turbine generator sets installed at both ends of the first and second working arms, a second wind turbine generator set is installed downwind at the blade sweep gap, which has the function of natural wind alignment and assisted yaw drive; and the other units on this device do not have yaw gears and their control systems, simplifying the unit structure and reducing costs.

[0017] The width of the windward side of the tower is smaller than the width of the downwind side of the tower, so as to reduce the resistance to the wind while ensuring the safety of the tower's load-bearing capacity.

[0018] The foundation 4 can be made into a ring-shaped tubular or box-shaped pontoon 4-1, which is connected to the steel frame to form a combined ring-shaped floating platform on the lake or sea surface, and the ring-rail tower boom-type horizontal axis wind power generation device of the present invention is installed.

[0019] In a further technical solution, the tower, inclined tower, vertical frame, first horizontal frame, second horizontal frame, first working arm and second working arm adopt a truss structure design. The materials used in its manufacture are high-strength steel, high-strength aluminum alloy or high-strength lightweight composite materials. The truss nodes are connected by high-strength bolts or welded with intersecting lines. The entire surface of the device is treated with heavy-duty anti-corrosion process. Beneficial effects

[0020] Compared with the prior art, the present invention has the following significant advantages: 1. High load-bearing capacity and stability. By employing a large-diameter ground-mounted circular track and multiple roller platforms for coordinated support, combined with the constraints of the central tower and the rotating shaft, a stable multi-coordinated support system for the boom is formed. Compared to the tower-top sliding track in existing technologies, this invention can withstand a greater overturning moment, making it possible to install more and higher-power generator sets in higher spaces, laying the foundation for achieving megawatt-level single-unit power generation.

[0021] 2. High wind energy utilization and large power generation. This invention, by setting up a double-layer (or even multi-layer) boom structure, can integrate up to nine or more horizontal axis wind turbine generators on different height planes, forming a three-dimensional wind energy capture network. This "spatially compact" layout significantly increases the installed capacity and total power generation on the same land area, resulting in a significant improvement in wind energy conversion efficiency.

[0022] 3. Structural Innovation, Achieving Modularization and Large-Scale Design. This invention achieves a synergistic unity of large-scale integration and lightweight design of the boom system through a truss-based modular structure. Key components such as the ring track, tower, and boom can be modularly designed and manufactured, facilitating transportation and on-site assembly. Simultaneously, this structure effectively overcomes the height and weight limitations of traditional single-tower structures, significantly increasing the wind turbine's wind-catching height and thus fully utilizing high-altitude, high-quality wind energy resources.

[0023] 4. Simplified unit structure and reduced costs. The device of this invention achieves wind alignment through overall yaw rotation. Therefore, all horizontal axis wind turbine generators installed on the boom do not need their own yaw gears and control systems, simplifying the unit structure and reducing equipment manufacturing costs and maintenance difficulty. Simultaneously, the second wind turbine generator installed away from the tower axis and downwind of the blade sweep gap on the boom utilizes the long lever arm to generate a passive yaw moment, effectively assisting the device in yaw alignment.

[0024] 5. Safe and convenient operation and maintenance. The roller platform and ring rail are located on the ground, making maintenance convenient. The boom structure is stable with no significant wind swaying, and a passageway or maintenance trolley can be set up on the boom, providing a stable and safe working environment for the daily inspection and maintenance of the aerial work platform unit. Attached Figure Description

[0025] Figure 1 This is a front view of a horizontal axis wind power generation device with a rotating shaft on a ring rail tower according to the present invention. Figure 2 Left view of a horizontal axis wind power generation device with a rotating shaft on a ring rail tower; Figure 3 for Figure 1 AA view; Figure 4 for Figure 1 BB view; Figure 5 for Figure 1 Top view of the second horizontal frame in the AA direction; Figure 6 This is a schematic diagram of the ground-based circular track structure; Figure 7 This is the front view of the roller platform; Figure 8 This is the left view of the roller platform; Figure 9 This is the front view of the steel frame; Figure 10 This is the left view of the steel frame; Figure 11 This is a top view of the steel frame; Figure 12 This is a front view of the roller shaft and the roller; Figure 13 Left view of the roller shaft and roller; Figure 14 This is a front view of the rollers mounted on the steel frame. Figure 15 Left view of the rollers mounted on the steel frame; Figure 16 A schematic diagram of the structure of the central turntable; Figure 17 for Figure 16 AA view; The diagram is labeled as follows: 1. Central tower; 2. Central turntable; 3. First horizontal frame; 4. First boom; 5. Second horizontal frame; 6. Second boom; 7. Rotating shaft; 5-1. Rotating shaft sleeve; 8. Tower; 9. Roller platform; 10. Ground ring rail; 11. Horizontal axis wind turbine generator set; 12. Vertical frame; 13. Support frame; 14. Diagonal tie rod; 15. Inclined tower; 16. Second wind turbine generator set; 17. Coupling; 18. Foundation; 19. Boom generator set installation platform; 9-1. Support frame; 9-2. Inner roller assembly; 9-3. Outer roller assembly; 9-4. Shaft connecting rod; 9-5. Guide wheel shaft; 9-6. Guide wheel; 9-2-1. Limiting beam; 9-2-2. Steel frame; 9-2-3. Roller shaft; 9-2-4. Rolling bearing. 9-2-5, Roller; 9-2-6, Elastic Plate; 9-2-7, Support Column; 9-2-8, Column; 2-1, Annular Vertical Plate; 2-2, Annular Pressure Plate; 2-3, Annular Slider; 2-4, Annular Groove; 2-5, Lubricant; 2-6, Bolt; 2-7, Sliding Plate. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0027] like Figure 1-17 As shown, a ring-rail tower boom-type horizontal axis wind power generation device includes: a central tower 1, a central turntable 2, a first horizontal frame 3, a first boom 4, a second horizontal frame 5, and a second boom 6; the central tower 1 is made into a large-diameter steel-concrete high-strength load-bearing central tower, and the upper part of the central tower is provided with a boom sleeve 5-1, and a rotatable boom 7 is installed inside the boom sleeve; The central turntable 2 is located between the central tower and the horizontal frame, and is used to transfer part of the load and realize rotational support; The first horizontal frame 3 is connected to the top of the rotating shaft 7. Above the first horizontal frame 3, the first working arm 4, the second horizontal frame 5, and the second working arm 6 are arranged sequentially from bottom to top. The first horizontal frame 3, the first working arm 4, the second horizontal frame 5, and the second working arm 6 are installed on several vertically arranged towers 8. The front and rear of the first horizontal frame 3 are provided with relatively inclined inclined towers 15. The upper part of the inclined towers 15 is connected to the first working arm 4 or the second horizontal frame 5 to support the stability of the support device. The bottom of the tower 8 is provided with a roller platform 9. The bottom of the roller platform 9 is provided with several rollers 9-2-5 that roll along the ground ring rail 10. The ground ring rail 10 is located on the foundation 18. The foundation 18 can be a rigid fixed foundation on land or a floating foundation on water. The floating foundation on water can be made by connecting pipes, boxes and steel frames to form a combined ring floating platform on water. A ring rail tower boom swivel type horizontal axis wind power generation device is installed on the floating platform. The first boom 4 and the second boom 6 are equipped with horizontal axis wind turbine generator sets 11. The roller platform 9 rolls along the ground ring rail 10, driving the first boom 4, the second boom 6 and the horizontal axis wind turbine generator sets 11 to rotate around the central tower 1, so as to achieve yaw and wind response.

[0028] The first arm 4 and the second arm 6 are rectangular, and the horizontal axis wind turbine generator set 11 is located at the end or middle of the arm.

[0029] The roller platform 9 is equipped with a height adjuster, which can synchronously adjust the height of each roller platform 9 to distribute the load between the central turntable 2 and the ground ring rail 10 and adjust the stress state of the device. When the roller platforms 9 are synchronously raised horizontally, the tower 8 can be lifted, reducing the pressure of the horizontal frame 3 on the central turntable 2; when the roller platforms 9 are synchronously lowered horizontally, the pressure of the tower 8 on the rollers and the ground ring rail 10 can be reduced, which helps to reduce the resistance of the rollers rotating on the ground ring rail 10. The distance between the first working arm 4 and the second working arm 6 is greater than the diameter of the wind turbine blades of the installed unit; the length of the first working arm 4 and the second working arm 6 is greater than the diameter of the wind turbine blades to ensure the rotational movement of the blades.

[0030] The horizontal axis wind turbine generator set 11 adopts a dual-unit docking installation method: at the same end of the same boom, two horizontal axis wind turbine generator sets 11 of the same specifications are coaxially installed on the boom unit installation platform, with the three blades of the same unit having an angle of 120° with each other; after the two units are docked, the six blades are evenly distributed along the axial projection, with the angle between adjacent blades being about 60°, and the hubs of the two units are connected by a coupling 17. This connection method can effectively utilize space and improve power generation capacity.

[0031] The roller platform 9 includes a support frame 9-1 located at the bottom of the tower 8, and several sets of rolling units located below the support frame; Each rolling unit includes an inner roller group 9-2 and an outer roller group 9-3. The inner roller group 9-2 and the outer roller group 9-3 have basically the same structure. The inner roller group 9-2 and the outer roller group 9-3 are arranged on the same horizontal line along the radial direction of the ground ring rail 10. The inner roller assembly 9-2 includes a limiting beam 9-2-1, a steel frame 9-2-2, roller shafts 9-2-3, rolling bearings 9-2-4, and rollers 9-2-5. The steel frame 9-2-2 includes a horizontally arranged elastic plate 9-2-6 and support columns 9-2-7 perpendicularly arranged at both ends of the elastic plate 9-2-6. A column 9-2-8 is provided on the upper surface of the elastic plate 9-2-6. Roller shafts 9-2-3 are installed inside the support columns 9-2-7 at both ends, and rolling bearings 9-2-4 are sleeved on the roller shafts 9-2-5. 4. Rollers 9-2-5; The column 9-2-8 is provided with a limiting beam 9-2-1, and the limiting beams 9-2-1 on the inner roller group 9-2 and the outer roller group 9-3 are respectively installed at both ends of the support frame 9-1, and the position of each rolling unit is fixed by the limiting beams 9-2-1; A shaft connecting rod 9-4 is provided between the roller shafts of the inner roller group 9-2 and the outer roller group 9-3, so that the direction of each group of rolling units is consistent, and the axis of all rollers 9-2-5 points horizontally to the center of the ground ring rail 10; The elastic plate 9-2-6 is made of spring steel plate, so that multiple groups of rollers are evenly stressed.

[0032] The bottom of the support frame 9-1 is equipped with a guide wheel shaft 9-5. The guide wheel 9-6 is mounted on the guide wheel shaft 9-5 through a bearing. The guide wheel 9-6 maintains rolling contact with the ground ring rail 10 and is limited in the radial direction to prevent abnormal friction between the roller platform 9 and the ground ring rail 10.

[0033] The ground ring rail 10 is mounted on the foundation 18. The ground ring rail 10 includes an inner ring rail 10-1 and an outer ring rail 10-2. The inner roller assembly 9-2 and the outer roller assembly 9-3 are respectively located within the inner ring rail 10-1 and the outer ring rail 10-2. Limiting plates 10-3 are provided on the inner ring rail 10-1 and the outer ring rail 10-2 to restrict the movement of the rollers within the ring rail. The ground ring rail 10 can be assembled into modules using high-quality alloy structural steel or high-carbon chromium bearing steel, facilitating disassembly, replacement, and adjustment. The radius of the ground ring rail 10 is determined comprehensively based on factors such as the extension length of the boom, the total load-bearing weight, and the geographical environment. The larger the radius of the ground ring rail 10, and the closer it is to the end of the support boom, the greater and more stable the load-bearing capacity of the device. Alternatively, a single ring rail can be selected according to actual needs, with separate rollers for each rail.

[0034] The central turntable 2 includes several annular upright plates 2-1, annular pressure plates 2-2, annular sliders 2-3, annular grooves 2-4, and lubricant 2-5. The top of the annular upright plates 2-1 is connected to the first horizontal frame 3, and its bottom is connected to the annular pressure plates 2-2. The annular sliders 2-3 are mounted on and pass through the threaded holes of the annular pressure plates 2-2 via bolts 2-6. Rotating the bolts 2-6 changes the height of the first horizontal frame 3. The annular grooves 2-4 are located above the central tower 1, filled with lubricant 2-5, and have several layers of sliding plates 2-7. The annular sliders 2-3 are positioned on the sliding plates 2-7 to achieve rotation.

[0035] The device also includes a roller-electrically driven rotary yaw control system, installed on one or more roller platforms 9, for actively driving yaw and improving wind accuracy and response speed. The roller-electrically driven rotary yaw control system enables the roller platform 9 to drive the horizontal axis wind turbine generator 11 on the boom to rotate synchronously and accurately in the direction of the incoming wind, around the ground ring track 10.

[0036] A vertical frame 12 is provided at the center of the second boom 6, and support frames 13 are provided on both sides of the vertical frame 12 for support. Diagonal tie rods 14 are provided between the second boom 6 and the vertical frame 12, and between the first boom 4 and the tower 8. Inclined towers 15 are provided on the front and rear sides of the first horizontal frame 3 to enhance structural stability. The horizontal axis wind turbine generators 11 installed at both ends of the first boom 4 and the second boom 6 have a second wind turbine generator 16 installed downwind at the blade sweep gap, which has the function of natural passive yaw. Furthermore, the other units on this device do not have yaw gears and their control systems, simplifying the unit structure and reducing costs.

[0037] The vertical tower, inclined tower, and central tower together bear the weight of the boom and wind turbine generator. The width of the windward side of the tower is smaller than the width of the downwind side of the tower, so as to reduce the resistance to the wind while ensuring the load-bearing safety of the tower.

[0038] The tower 8, inclined tower 15, vertical frame 12, first horizontal frame 3, second horizontal frame 5, first boom 4, and second boom 6 are designed with a truss structure. High-strength steel, high-strength aluminum alloy, and high-strength lightweight composite materials are preferred for their construction. Truss joints are connected with high-strength bolts or welded with intersecting lines. The entire surface of the device undergoes a heavy-duty anti-corrosion process. The central tower 1 can be a steel-concrete structure to increase compressive stability.

[0039] The foundation 18 can be made of track slabs, integrated concrete roadbeds, etc. The foundation can also be made into annular tubular or box-shaped pontoons connected to a steel frame, forming a combined annular floating platform on the surface of a lake or sea for installing the device. The bottom end of the rotating shaft 7 is a flat surface, and the inner bottom wall of the lower end of the rotating shaft sleeve 5-1 is a flat surface. Sliding fit is formed between the inner wall of the sleeve and the outer wall of the rotating shaft, and lubricant is filled therebetween, so that the rotating shaft can rotate and slide in the sleeve. The top view of the central tower can be rectangular, circular, prismatic or triangular.

[0040] The first working arm and the second working arm are rectangular. An end of each working arm is provided with a working arm unit mounting platform 19 facing the direction where the unit is to be installed, and the unit is mounted and fixed on the platform. The working arms and the horizontal frame can adopt a structure with a "square" shape or an "L" shape in top view and a "rice" shape or triangular shape in side view, and are installed in series by segmented sections. The length of each section is set according to transportation conditions, and can be made into "L-shaped", "U-shaped" or "straight-shaped" modules, which are transported to the site and connected, fixed or welded by fasteners and bolts.

[0041] The device of the present invention can also be equipped with auxiliary systems such as elevators, wind power prediction systems, lightning protection systems, aviation warning signal systems, bird repellent systems, strong wind anchor dropping systems, and safety monitoring systems according to actual needs.

[0042] The horizontal-axis wind turbine generator set in the present invention comprises a nacelle, a nose hub, and blades mounted on the hub. The horizontal-axis wind turbine generator set can be selected as a horizontal-axis wind turbine generator set with large power generation, light weight and optimal comprehensive indicators. No yaw gear and its control system are provided in the generator set, and the generator set is integrated and assembled on the annular rail tower working arm rotating shaft type horizontal-axis wind power generation device; The annular rail tower working arm rotating shaft type horizontal-axis wind power generation device of the present invention can be provided with 2 to 3 layers of working arms. The height of the first layer of working arms from the ground is greater than 100 m. The height of the second layer of working arms from the first layer of working arms, and the height of the third layer of working arms from the second layer of working arms are both greater than the diameter of the wind rotor blades of the installed generator set, and the depth of the working arms is greater than the radius of the wind rotor blades, so as to ensure the rotation safety of the wind rotor blades in up-down, left-right and front-back directions within the same vertical plane space; as shown in the figure, there are two unit installation methods, one is dual-unit butt installation, and the other is single-unit installation: (1) Dual-unit butt installation. Each layer of working arms can be installed with 4 identical generator units. In addition, a second wind turbine generator set is installed in the downwind direction of the center of the blade swept air gap between adjacent upper and lower layers of working arm units. Two end portions of each layer of working arms are correspondingly installed with two horizontal-axis wind turbine generator sets with three blades of the same specification, wherein the two generator sets located at the same end portion are installed in a butt joint manner; For each unit installed in the dock, the units shown by the dashed lines in the diagram have their rotors facing the direction of the incoming wind; the units shown by the solid lines have their rotors facing away from the direction of the incoming wind. The rotors of the two units installed in the dock are coaxial and connected by a coupling. The closer the rotors of the two units are to each other, the better, so that the hub spacing of the blades of the two rotors is 0~100 m, and the angle between the three blades of each rotor is 120°. After docking, there are six blades in the axial view, and the angle between the blades is about 60°. When the axial wind blows at a speed of a few meters per second towards the blades of the two units installed in the dock, where the blade plane spacing is less than 6 m and the blade angle is about 60°, the wind thrust on the six blades is basically the same. (2) Single unit installation. If a large number of generator sets are not required, two identical units can be installed on each layer of the boom. In addition, a second wind turbine generator set can be installed downwind of the center of the swept air gap between the blades of the two boom units.

[0043] Each boom is mounted on the tower, and the turbine blades installed are all on the same vertical plane. At the same time, the wind force they receive is not disturbed. As the height of the turbine on the boom increases, the efficiency of the turbine in capturing and converting high-quality wind energy at high altitudes will increase. The dual-unit installation, with the unit shown in the figure (marked by dashed lines) positioned downwind of the central tower's pivot, allows the unit to automatically yaw using the thrust of the incoming wind. To further enhance the self-yaw capability, a second wind turbine is installed on the horizontal frame, utilizing the wind force at the center of the sweep gap between the two layers of booms. This second turbine is located away from the axis of the central tower's pivot, effectively providing a longer boom and further enhancing the unit's ability to accurately follow the wind and automatically yaw.

[0044] In actual installation, the ring track, annular floating platform, central turntable, tower, and boom in this invention can be manufactured as commercial modules, which are convenient to transport and install and have low cost. Lightweight flat roads can be set on the horizontal frame and boom to facilitate personnel movement, inspection, and maintenance of equipment.

[0045] This invention features a large-diameter annular track, an annular floating platform, and a central turntable, which work together to support the total weight of the horizontal axis wind turbine generator with a rotating shaft on the annular track tower arm. It incorporates a roller tower and two to three horizontal boom layers, resulting in a superior structure and ample expansion space. A rotating shaft is located in the middle of the first horizontal frame, rotating within a bushing at the top of the stable central tower, eliminating wind swaying of the supporting boom in the horizontal direction. In practical applications, an automatic monitoring mechanism can be added to adjust the tension of the stay cables, ensuring the safety and stability of the high-altitude horizontal axis wind turbine generator. This guarantees that the invention achieves superior load-bearing capacity and high stability.

[0046] This invention installs horizontal-axis wind turbine generators on two horizontal booms at different heights, forming a vertical, unobstructed wind energy capture network for a single device. By integrating 5 to 9 sets of horizontal-axis wind turbine generators working in tandem, and increasing to a maximum of 14 sets when using three booms, it can significantly improve wind energy conversion efficiency. This shifts wind power technology from a "single-point high-efficiency" paradigm to a "space-intensive" paradigm, promoting large-scale development. The device uses integrated high-power, high-performance wind turbine generators for collaborative power generation, enabling the power output of a single device to leapfrog to the megawatt level. The ground ring track and roller platform of the present invention are set on the ground, and the horizontal axis wind turbine generator is installed on the two to three layers of the three-dimensional support arm. There is no wind swaying. When the wind turbine blades rotate to the horizontal plane, they can be on the same horizontal plane as the arm and are relatively close. A maintenance trolley that can be installed, operated and parked on the horizontal arm is set up to make the maintenance environment stable and safe. This invention relates to a horizontal-axis wind turbine generator set that can be installed on a horizontal boom. It eliminates the need for a built-in geared yaw system, as the yaw function is replaced by the unit's passive wind-following function in the downwind direction of the unit's shaft. This further reduces the weight of the device and manufacturing costs.

[0047] The device according to the present invention can be integrated and installed with units of 26MW and above. By adopting the method of dual-unit docking installation, the floor space occupied after installation can be reduced to less than one-fifth to one-tenth of the existing single-tower unit installation method.

Claims

1. A horizontal axis wind power generation device with a ring-rail tower boom and rotating shaft, characterized in that, include: Central tower, central turntable, first horizontal frame, first boom, second horizontal frame and second boom; The upper part of the central tower is provided with a rotating shaft sleeve, and a rotatable rotating shaft is installed inside the rotating shaft sleeve; The central turntable is located between the central tower and the horizontal frame; The first horizontal frame is connected to the top of the rotating shaft. Above the first horizontal frame, from bottom to top, a first boom, a second horizontal frame, and a second boom are arranged sequentially. The first horizontal frame, the first boom, the second horizontal frame, and the second boom are installed on several vertically arranged towers. The bottom of the towers is equipped with a roller platform. The bottom of the roller platform is equipped with several rollers that can roll on a ground ring track, which is located on the foundation. Horizontal axis wind turbine generators are installed on the first boom and the second boom. The roller platform rolls along the ground ring track, driving the first boom, the second boom, and the wind turbine generators to rotate around the central tower, thereby achieving yaw and wind alignment.

2. The apparatus according to claim 1, characterized in that, The first and second booms are rectangular, and the wind turbine generator set is located at the end or middle of the boom.

3. The apparatus according to claim 1, characterized in that, The roller platform is equipped with a height adjuster, which can synchronously adjust the height of each roller platform to distribute the load between the central turntable and the ring rail.

4. The apparatus according to claim 1, characterized in that, The distance between the first and second working arms is greater than the diameter of the wind turbine blades of the installed unit; the length of the first and second working arms is greater than the diameter of the wind turbine blades.

5. The apparatus according to claim 1, characterized in that, The horizontal axis wind turbine generator set adopts a dual-unit docking installation method: two horizontal axis wind turbine generator sets of the same specifications are coaxially installed on the unit installation platform of the boom at the same end of the boom, with the three blades of the same unit having an angle of 120° with each other; after the two units are docked, the six blades are evenly distributed along the axial projection, with the angle between adjacent blades being about 60°, and the hubs of the two units are connected by a coupling.

6. The apparatus according to claim 1, characterized in that, The roller platform includes a support frame located at the bottom of the tower and several sets of rolling units located below the support frame; each set of rolling units includes an inner roller set and an outer roller set, the inner roller set and the outer roller set have basically the same structure, and the inner roller set and the outer roller set are arranged on the same horizontal line along the radial direction of the ring rail. The inner roller assembly includes a limiting beam, a steel frame, roller shafts, rolling bearings, and rollers. The steel frame includes a horizontally arranged elastic plate and pillars perpendicularly arranged at both ends of the elastic plate. The upper surface of the elastic plate is provided with columns. Roller shafts are provided inside the pillars at both ends, and rolling bearings and rollers are sleeved on the roller shafts. The columns are provided with limiting beams. The limiting beams on the inner roller assembly and the outer roller assembly are respectively installed at both ends of the support frame, and the position of each rolling unit is fixed by the limiting beams. A shaft connecting rod is provided between the roller shafts of the inner roller assembly and the outer roller assembly, so that the direction of each rolling unit is consistent, and the axis of all rollers points horizontally to the center of the ring rail. The bottom of the support frame is equipped with a guide wheel shaft, and the guide wheel is mounted on the guide wheel shaft through a bearing. The guide wheel maintains rolling contact with the ring rail.

7. The apparatus according to claim 6, characterized in that, The ring track is set on the foundation and includes an inner ring track and an outer ring track. The inner roller assembly and the outer roller assembly are respectively set in the inner ring track and the outer ring track. Limiting plates are provided on the inner ring track and the outer ring track to restrict the movement of the rollers within the ring track. According to the device of claim 1, the central turntable comprises several annular vertical plates, annular pressure plates, annular sliders, annular grooves and lubricant. The top of the annular vertical plates is connected to the first horizontal frame, and the bottom of the annular vertical plates is connected to the annular pressure plates. The annular sliders are bolted to the bottom of the annular pressure plates. The annular grooves are located above the central tower. The annular grooves are filled with lubricant and have several layers of sliding plates. The annular sliders are located on the sliding plates.

8. The apparatus according to claim 1, characterized in that, It also includes a roller electric drive rotation yaw control system, which is installed on one or more roller platforms for actively driving yaw.

9. The apparatus according to claim 1, characterized in that, A vertical frame is provided at the center of the second working arm, and inclined support frames are provided on both sides of the vertical frame; inclined tie rods are provided between the second working arm and the vertical frame, and between the first working arm and the tower; relatively inclined towers are provided on the front and rear sides of the first horizontal frame, and the upper part of the inclined towers is connected to the first working arm or the second horizontal frame. The horizontal axis wind turbine generators installed at both ends of the first and second working arms have a second wind turbine generator set installed downwind of the blade sweep gap.

10. The apparatus according to claim 9, characterized in that, The tower, inclined tower, vertical frame, first horizontal frame, second horizontal frame, first boom and second boom are truss structures, and the materials are high-strength steel, high-strength aluminum alloy or high-strength lightweight composite materials.

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