Horizontal wing angle adjustable horizontal wing wind driven generator

Abstract

The application belongs to the technical field of wind driven generators, and particularly relates to a horizontal wing angle adjustable horizontal wing wind driven generator, which comprises a speed increaser, a rotary hinged seat, an output shaft of the speed increaser connected with a generator, a horizontal wing hingedly arranged on the rotary hinged seat, a stand column arranged at the upper end of the rotary hinged seat, a fixed pulley set arranged on the stand column, a rope winding and unwinding device arranged in the stand column, a lifting rope arranged on the rope winding and unwinding device, the lifting rope passing through the fixed pulley set and connected with the horizontal wing, a flexible coupling arranged below the rotary hinged seat, and the end of the flexible coupling connected with the speed increaser. The horizontal wing with adjustable angle is matched with flexible sensors and other equipment, so that the wind driven generator has good startability and good wind energy capturing effect.

Description

Technical Field

[0001] This application belongs to the field of wind turbine technology, and particularly relates to a horizontal wing wind turbine with adjustable horizontal wing angle. Background Technology

[0002] Currently, wind turbines are large wind turbines whose rotating shafts are relatively parallel to the ground. They are used to capture wind power at a relatively high altitude and generate a large amount of electricity. However, there is still a gap in the development of wind turbines that can capture wind power in the mid-altitude region at a moderate altitude.

[0003] Wind turbines currently still have the following problems:

[0004] 1. The instability and uncertainty of wind energy: the strength and direction of wind can change at any time, especially the capture of wind energy in the hollow region is more unstable and uncertain, and the power input of the speed increaser is also unstable.

[0005] 2. The blades of common wind turbines have a small frontal area at their tips. Although this increases the strength of the blades, it results in poor wind energy capture.

[0006] 3. Wind resources are geographically uneven, with low wind speeds in some areas, making it difficult for wind turbine blades to start. In addition, the angle adjustment range of wind turbine blades is limited, making it impossible to match the changing wind force in a timely manner.

[0007] 4. Assembly is difficult. Current experience in assembling large wind turbines involves first building the tower and then hoisting the blades one by one. Hoisting must be carried out in good weather and low wind speed conditions. Summary of the Invention

[0008] In order to solve the above problems, this application provides a horizontal wing wind turbine with adjustable horizontal wing angle.

[0009] The purpose of this application is to provide a horizontal wing wind turbine with an adjustable horizontal wing angle. By using an adjustable horizontal wing in conjunction with flexible sensors and other devices, the wind turbine can achieve good start-up performance and good wind energy capture effect.

[0010] To achieve the purpose of this application, the technical solution of this application is as follows:

[0011] A horizontal wing wind turbine with adjustable horizontal wing angle includes a speed increaser and a rotary hinge base. The output shaft of the speed increaser is connected to the generator. A horizontal wing is hinged on the rotary hinge base. A column is provided at the upper end of the rotary hinge base. A fixed pulley block is provided on the column. A rope winding and unwinding device is provided inside the column. A hoisting rope is provided on the rope winding and unwinding device. The hoisting rope passes through the fixed pulley block and is connected to the horizontal wing. A flexible coupling is provided below the rotary hinge base. The end of the flexible coupling is connected to the speed increaser.

[0012] Furthermore, the frontal area of ​​the horizontal wing's leading edge is smaller than that of the horizontal wing's rear edge.

[0013] Furthermore, the angle between the lower end of the horizontal wing and the horizontal plane is smaller than the angle between the upper end of the horizontal wing and the horizontal plane.

[0014] Furthermore, the rotary hinge seat includes a vertical shaft, on which multiple hinge seats are arranged evenly around the center of the vertical shaft. Each hinge seat includes two spaced partitions, between which at least two fixed plates are arranged. A first hinge shaft is arranged between the fixed plates, and a second hinge shaft is arranged between the partitions and the fixed plates.

[0015] Furthermore, the front end of the horizontal wing is provided with a hinged mating seat, which includes a first hinge plate and a second hinge plate arranged on the side of the first hinge plate. The first hinge plate is hinged to a first hinge shaft, and the second hinge plate is hinged to a second hinge shaft.

[0016] Furthermore, a rear lifting ring is provided at the rear end of the horizontal wing, and a front lifting ring is provided at the front end of the horizontal wing. The rope winding and unwinding device is connected to the horizontal wing via a lifting device. The lifting rope includes a front lifting rope, a rear lifting rope, and a connecting rope. The lifting device includes a front lifting block, a rear lifting block, and a connecting plate connected to the front lifting block and the rear lifting block. The front lifting block and the rear lifting block are arranged at an acute angle. A movable front ring is provided on the front lifting block, and a movable rear ring is provided on the rear lifting block. A movable connecting ring is provided on the connecting plate. One end of the connecting rope passes through a fixed pulley block and is connected to the rope winding and unwinding device. The other end of the connecting rope is connected to the connecting ring. One end of the front lifting rope is connected to the front ring, and the other end of the front lifting rope is connected to the front lifting ring. One end of the rear lifting rope is connected to the rear ring.

[0017] Furthermore, the flexible coupling includes an upper connecting plate and a lower connecting plate arranged at intervals. A support column is provided on the lower connecting plate, and the support column is movably connected to the upper connecting plate. The lower connecting plate is connected to a speed increaser. A slip ring is provided at the upper end of the upper connecting plate, and a brake disc is provided at the upper end of the slip ring. A braking system is provided on the brake disc. A rotary hinge seat is arranged above the brake disc and the braking system. Multiple flexible connecting ropes are provided between the upper and lower connecting plates. One end of the flexible connecting rope is connected to the upper connecting plate, and the other end of the flexible connecting rope is connected to the lower connecting plate. The flexible connecting ropes are spirally wound around the outer periphery of the support column, and adjacent flexible connecting ropes abut against each other.

[0018] Furthermore, the speed increaser and generator are arranged in the lower nacelle, which is equipped with a support plate. The generator is mounted on the support plate. A modular tower is installed at the lower end of the lower nacelle. The modular tower consists of multiple tower sections connected together.

[0019] Furthermore, this application also includes an active starting device, which includes a driven gear located inside the upper engine compartment and an active gear meshing with the driven gear. The active gear is provided with a power input shaft, which is connected to a power input device via a clutch. The driven gear is provided on the shaft at the lower end of the rotary hinge seat. The power input shaft and the clutch are provided on the upper engine compartment.

[0020] Furthermore, a limit baffle is provided on the rotating hinge seat, the limit baffle is arranged above the horizontal wing, and a shock absorption mechanism is provided between the limit baffle and the horizontal wing.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] 1. The blades of this application are horizontal blades, and the vertical shaft structure is used in conjunction with the horizontal blades. The requirements for the bearings and other components used are low. The windward area of ​​the rear end of the horizontal blade is larger than that of the front end of the horizontal blade. In conjunction with the horizontal blade that can be angled, it can better capture wind energy, especially wind energy in the hollow region.

[0023] 2. The angle between the lower end of the horizontal wing and the horizontal plane is smaller than the angle between the upper end of the horizontal wing and the horizontal plane, which makes the horizontal wing tend to move upward when rotating, reducing the influence of the horizontal wing's own weight. In addition, the cable reeling device and the suspension rope of this application can pull the horizontal wing from the upper end, which can not only change the angle of the horizontal wing, but also form a dynamic balance with the weight of the horizontal wing, making the horizontal wing more stable when rotating.

[0024] 3. The flexible coupling of this application can reduce the impact of unstable power input during unstable wind energy capture. The flexible coupling buffers the force transmitted from the rotating hinge seat and inputs it into the speed increaser. The flexible coupling connects the speed increaser and the rotating hinge seat. When the braking system brakes suddenly or the blades on the rotating hinge seat stop rotating in the absence of wind, the rotating hinge seat will still rotate a certain distance under the action of inertia. The flexible connecting rope in the flexible coupling plays a buffering role and avoids this part of the power being input into the speed increaser.

[0025] 4. This application is equipped with an active start device. When the wind is weak, the active start device provides auxiliary power to rotate the horizontal blade, and with the help of wind energy, the horizontal blade rotates.

[0026] 5. This application enables the assembly of wind turbines from top to bottom, that is, from the installation of the rotating hinge base and horizontal blades to the completion of the modular tower installation. This process is achieved through the cooperation of the hydraulic lifting device, nacelle and modular tower, resulting in stable installation and minimal impact from wind and other weather conditions. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0028] Figure 1 This is a schematic diagram of the overall structure of this application;

[0029] Figure 2 This is a structural schematic diagram of one state of the wind turbine generator of this application;

[0030] Figure 3 This is a structural schematic diagram of another state of the wind turbine generator of this application;

[0031] Figure 4 This is a schematic diagram of the wind turbine stabilization and fixing scheme of this application;

[0032] Figure 5 This is a schematic diagram of the overall structure of the rotating hinge seat, upper cabin, lower cabin and column of this application;

[0033] Figure 6 for Figure 5 A schematic diagram of a structure with lightning protection rods installed;

[0034] Figure 7 for Figure 6 The front view;

[0035] Figure 8 for Figure 5 Internal structure diagram. Figure 8 The internal structure of the upper cabin was shown;

[0036] Figure 9 for Figure 8 The front view;

[0037] Figure 10 for Figure 5 Internal structure diagram. Figure 10 The internal structure of the lower cabin was shown;

[0038] Figure 11 This is a schematic diagram of the overall structure of the horizontal wing;

[0039] Figure 12 for Figure 11 The front view;

[0040] Figure 13 This is a schematic diagram of the overall structure of the lifting device in this application;

[0041] Figure 14 This is a schematic diagram of the shock absorption mechanism at the rotating hinge seat of this application.

[0042] In the picture:

[0043] 1. Lower nacelle; 2. Upper nacelle; 3. Rotary hinge seat; 4. Column; 5. Fixed pulley block; 6. Flexible coupling; 7. Slip ring; 8. Braking system; 9. Speed ​​increaser; 10. Generator; 11. Modular tower; 12. Horizontal wing; 13. Lifting device; 14. Rear lifting rope; 15. Front lifting rope; 16. Hinge mating seat; 17. Rear lifting ring; 18. Front lifting ring; 19. Rear lifting block; 20. Front lifting block; 21. Connecting plate; 22. Anemometer; 23. Lightning rod; 24. Telescopic spring; 25. Limiting baffle; 26. Shock absorption mechanism; 27. Pull-down rope. Detailed Implementation

[0044] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] In this application, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this application and do not specifically refer to any part or element in this application. They should not be construed as limiting this application.

[0047] Example 1

[0048] This embodiment is an angle-adjustable horizontal blade 12 wind turbine generator 10. The difference from the prior art is that the horizontal blade 12 in this embodiment of the horizontal blade 12 wind turbine generator 10, which can also be called a blade, is a horizontal blade 12 structure with an acute angle relative to the ground. Similar to the existing wind turbine generator 10, the horizontal blade 12 wind turbine generator 10 in this embodiment also has a speed increaser 9 and a generator 10. The output shaft of the speed increaser 9 is connected to the generator 10. It has structures such as a cooling system, a lightning rod 23, and an anemometer 22. It also has structures such as a heat exchanger and a pump station that cooperate with the cooling system, and a power transmission system that cooperates with the generator 10.

[0049] It should be noted that the front end of the horizontal wing 12 refers to the end close to the rotating hinge seat 3, and the rear end of the horizontal wing 12 refers to the end away from the rotating hinge seat 3. In this embodiment, low altitude refers to the air space relatively close to the ground. The blades of the small wind turbine 10 in the prior art are located in low altitude. In this embodiment, mid-altitude refers to the air space relatively moderately above the ground. In this embodiment, high altitude refers to the air space relatively far from the ground. The blades of the large wind turbine 10 in the prior art are located in high altitude.

[0050] Since the wind force in the mid-air is not as strong as that in the high-altitude air, it is difficult for the horizontal wing 12 to rotate, and the rotation force may vary. In addition to using the horizontal wing 12 to enhance the capture of wind force in the mid-air, this embodiment also uses a flexible coupling 6 to buffer the force transmitted from the rotating hinge seat 3, and uses an active starting device to assist in starting the rotation of the horizontal wing 12.

[0051] As a structure that cooperates with the horizontal blade 12, the wind turbine 10 of this embodiment includes a rotary hinge seat 3, on which the horizontal blade 12 is hingedly mounted. Specifically, based on the three horizontal blades 12 in this embodiment, the rotary hinge seat 3 of this embodiment includes a vertical shaft located at the center. The upper end of the vertical shaft has a top plate, and the lower end of the vertical shaft has a bottom plate. There are three hinge seats on the vertical shaft, which are evenly arranged around the center of the vertical shaft. Reinforcing ribs are installed between adjacent hinge seats to enhance the structure of the rotary hinge seat 3. The hinge seat includes two spaced partitions. The upper end of the partition is fixedly connected to the top plate, and the lower end of the partition is fixedly connected to the bottom plate. Two fixing plates are installed between the partitions. The lower end of the fixing plates is fixed to the bottom plate. There is a first hinge shaft between the fixing plates and a second hinge shaft between the partitions and the fixing plates. The diameter of the first hinge shaft is larger than the diameter of the second hinge shaft.

[0052] In this embodiment, a column 4 is installed on the upper end of the rotating hinge seat 3. The column 4 is fixed to the top plate by bolts. A fixed pulley assembly 5 is installed on the column 4. Specifically, based on the three horizontal wings 12 in this embodiment, the fixed pulley assembly 5 in this embodiment also has three fixed pulleys. The fixed pulleys are installed on the fixed pulley bracket, and the fixed pulley bracket is installed on the top of the column 4. As a protective structure, a protective cover is installed on the top of the column 4 in this embodiment. The protective cover covers the top of the column 4 and protects the fixed pulley assembly 5 and the hole opened at the top of the column 4. A rope winding device is installed inside the column 4. A hoisting rope is wound on the rope winding device. The hoisting rope passes through the hole at the top of the column 4, the fixed pulley assembly 5 and is connected to the horizontal wings 12. By pulling the hoisting rope, the angle between the horizontal wings 12 and the horizontal plane changes.

[0053] In this embodiment, a flexible coupling 6 is installed below the rotary hinge seat 3, and the end of the flexible coupling 6 is connected to the speed increaser 9.

[0054] In this embodiment, a shaft is installed at the lower end of the rotary hinge seat 3, a support plate is installed at the lower end of the shaft, a slip ring 7 is installed at the lower end of the support plate, a flexible coupling 6 is arranged at the lower end of the slip ring 7, a brake disc is installed on the shaft, and a brake system 8 that cooperates with the brake disc is fixed on the support plate.

[0055] In this embodiment, the shaft, braking system 8, slip ring 7, and flexible coupling 6 are arranged inside the upper nacelle 2, while the speed increaser 9 and generator 10 are arranged inside the lower nacelle 1. The lower nacelle 1 has a bearing plate, and the generator 10 is fixed on the bearing plate. The lower end of the lower nacelle 1 is a modular tower 11, which includes multiple tower sections connected together. The tower sections are connected together by bolts, and the power transmission system is arranged inside the modular tower sections.

[0056] As one implementation method, such as Figure 4 As shown, in this embodiment, the modular tower 11 is fixed to the ground by fixing ropes. Specifically, in this embodiment, anchor rods are first installed on the ground. The modular tower 11 has a connecting plate for fixing ropes. Both ends of the fixing ropes are equipped with U-shaped fixing buckles. The U-shaped fixing buckles are fixedly connected to the anchor rods and the connecting plate for fixing ropes on the ground. The fixing ropes in this embodiment are made of steel wire ropes.

[0057] In this embodiment, during installation, the tower base can be leveled first, and the embedded parts can be prepared. The rotating hinge seat 3 is then lifted on the tower base using a hydraulic jacking device. The rotating hinge seat 3 and the horizontal wing 12 are then installed together, and the angle adjustment of the horizontal wing 12 is tested. The upper nacelle 2 and the lower nacelle 1 are then installed step by step. Finally, the rotating hinge seat 3, the horizontal wing 12, the upper nacelle 2, and the lower nacelle 1 are hoisted as a whole, and the modular tower 11 is installed step by step. In this embodiment, due to the structure of the horizontal wing 12, the installation is carried out step by step from top to bottom, that is, from the installation of the rotating hinge seat 3 and the horizontal wing 12 until the modular tower 11 is installed. This process is always supported by the hydraulic jacking device, the nacelle, or the modular tower 11, resulting in stable installation and minimal impact from wind and other weather conditions.

[0058] Example 2

[0059] This embodiment is based on Embodiment 1 and details the changes to the horizontal wing 12.

[0060] In this embodiment, the frontal windward area of ​​the horizontal wing 12 is smaller than that of the rear end of the horizontal wing 12, and the angle between the lower end of the horizontal wing 12 and the horizontal plane is smaller than that between the upper end of the horizontal wing 12 and the horizontal plane. This causes the frontal windward area of ​​the horizontal wing 12 in this embodiment to gradually increase first, reaching its maximum at the rear end of the horizontal wing 12, and then rapidly decreasing. The fact that the frontal windward area of ​​the horizontal wing 12 in this embodiment reaches its maximum at its rear end makes the horizontal wing 12 more effective at capturing wind energy, especially from hollow areas. Furthermore, the horizontal wing 12 in this embodiment is adjusted in angle by being pulled by the suspension rope, causing all the horizontal wing 12s to be misaligned. Combined with the large frontal windward area at the rear end of the horizontal wing 12, this results in better start-up performance. Especially under low wind speed conditions, the horizontal wing 12 in this embodiment can rotate on its own or start without assistance, thereby better capturing low-speed wind energy from hollow areas.

[0061] More specifically, in this embodiment, a guide vane is installed on the horizontal blade 12. The guide vane can be evenly arranged on the surface of the horizontal blade 12 to ensure the stability of the horizontal blade 12 during rotation. In addition, since the horizontal blade 12 is arranged almost horizontally and is relatively long, the front end of the horizontal blade 12 can be connected to the rotating hinge seat 3 to ensure the stability of the front end of the horizontal blade 12. However, the rear end of the horizontal blade 12 is far away from the rotating hinge seat 3, and it is difficult to ensure the stability of the horizontal blade 12 by relying solely on the suspension rope. Therefore, in this embodiment, a winglet is arranged at the rear end of the horizontal blade 12. The winglet is used to maintain the stability of the rear end of the horizontal blade 12 during rotation, which allows the length of the horizontal blade 12 to be increased, thereby better capturing wind energy and reducing the occurrence of blade flutter and other issues.

[0062] As an adjustment scheme for the angle of the horizontal wing 12, the front end of the horizontal wing 12 has a hinge seat 16. The hinge seat 16 includes a first hinge plate and a second hinge plate arranged on the side of the first hinge plate. The first hinge plate is hinged to a first hinge shaft, and the second hinge plate is hinged to a second hinge shaft. In this embodiment, wear-resistant sleeves are installed on both the first and second hinge plates. The first and second hinge shafts are connected to the wear-resistant sleeves to avoid dry friction between the first and second hinge plates and the first and second hinge shafts. In addition, the wear-resistant sleeves are available in two diameters, referred to here as... The first wear-resistant sleeve and the second wear-resistant sleeve are respectively. The first wear-resistant sleeve is fitted with the first hinge shaft, and the inner diameter of the first wear-resistant sleeve is slightly larger than the diameter of the first hinge shaft. The second wear-resistant sleeve is fitted with the second hinge shaft, and the inner diameter of the second wear-resistant sleeve is slightly larger than the diameter of the second hinge shaft. When the horizontal wing 12 is adjusted in the up and down direction, the contact between the hinge shaft and the wear-resistant sleeve is reduced by hoisting. When the horizontal wing 12 is rotated, the horizontal wing 12 is fixed by the obstruction of the hinge plate by the partition plate and the fixed plate, as well as the friction between the wear-resistant sleeve and the hinge shaft and the obstruction of the hinge shaft by the wear-resistant sleeve.

[0063] As a reference for the angle of the horizontal wing 12, this embodiment installs a level inside the horizontal wing 12 to detect changes in the angle of the horizontal wing 12.

[0064] As a specific hoisting scheme, the rear end of the horizontal wing 12 has a rear lifting ring 17, and the front end of the horizontal wing 12 has a front lifting ring 18. The rope winding and unwinding device is connected to the horizontal wing 12 through the lifting device 13. In this embodiment, the lifting rope is a steel wire rope. Depending on the position of the lifting rope, the lifting rope in this embodiment includes a front lifting rope 15, a rear lifting rope 14, and a connecting rope. The lifting device 13 in this embodiment is used in conjunction with the lifting rope. The lifting device 13 in this embodiment includes a front lifting block 20, a rear lifting block 19, and a connecting plate 21 connected to the front lifting block 20 and the rear lifting block 19. The front lifting block 20 and the rear lifting block 19 are arranged at an acute angle, that is, the central axis of the front lifting block 20 and the rear lifting block 19 are perpendicular to each other. The included angle of the central axis is an acute angle. A movable front ring is installed on the front lifting block 20, a movable rear ring is installed on the rear lifting block 19, and a movable connecting ring is installed on the connecting plate 21. For example, there is a through hole on the front lifting block 20, and the front ring is arranged in the through hole with a clearance fit between the front ring and the through hole, so that the front ring can move. The same applies to the rear ring and the connecting ring. One end of the connecting rope passes through the fixed pulley group 5 and is connected to the rope winding and unwinding device. The other end of the connecting rope is connected to the connecting ring. One end of the front lifting rope 15 is connected to the front ring, and the other end of the front lifting rope 15 is connected to the front lifting ring 18. One end of the rear lifting rope 14 is connected to the rear ring.

[0065] In addition, a telescopic spring 24 is installed on the connecting rope in this embodiment. The deformation of the telescopic spring 24 offsets the change in length of the connecting rope when the horizontal wing 12 is pulled. This allows the telescopic spring 24 to deform first and then pull the horizontal wing 12. When the angle of the horizontal wing 12 changes, the telescopic spring 24 buffers the movement, preventing the horizontal wing 12 from being rigidly pulled. Furthermore, the telescopic spring 24 can also cooperate with the shock absorption mechanism 26. The shock absorption mechanism 26 provides buffering at the fulcrum of the horizontal wing 12, while the telescopic spring 24 provides buffering at the hoisting point of the horizontal wing 12. Together, they buffer the movement when the angle of the horizontal wing 12 changes.

[0066] The cable take-up and unwinding device of this embodiment, such as a hydraulic cylinder and a hydraulic system that works with the hydraulic cylinder, has a flange installed at the top of the piston rod of the hydraulic cylinder, and a pull ring installed at the top of the flange. The connecting rope is connected to the pull ring. When the piston rod of the hydraulic cylinder retracts, the connecting rope is pulled and forms a dynamic balance with the weight of the horizontal wing 12 itself. When the piston rod of the hydraulic cylinder extends, the horizontal wing 12 moves downward and forms a dynamic balance with the weight of the horizontal wing 12 itself, thus completing the joint adjustment of the angle of the horizontal wing 12. However, this solution cannot adjust a single horizontal wing 12.

[0067] As another implementation scheme, the cable take-up and release device of this embodiment can adopt three hydraulic cylinders evenly arranged around the center of the rotating hinge seat 3. The hydraulic cylinders cooperate with the hydraulic system. When the piston rod of each hydraulic cylinder retracts, the connecting rope is pulled and forms a dynamic balance with the gravity of the horizontal wing 12 itself. When the piston rod of the hydraulic cylinder extends, the horizontal wing 12 moves downward and forms a dynamic balance with the gravity of the horizontal wing 12 itself, thus completing the adjustment of the angle of a single horizontal wing 12.

[0068] In this embodiment, the angle between the lower end of the horizontal wing 12 and the horizontal plane is smaller than the angle between the upper end of the horizontal wing 12 and the horizontal plane, so that when the horizontal wing 12 rotates, it cooperates with the airflow to form a lift structure of the horizontal wing 12. The horizontal wing 12 has an upward lift force, which serves as an auxiliary force to overcome the gravity of the horizontal wing 12 and reduces the tension of the connecting rope.

[0069] The horizontal wing 12 in this embodiment has a hollow structure, which greatly reduces the weight of the horizontal wing 12, and uses lightweight materials, such as long fiber materials, to enhance the structural strength of the horizontal wing 12.

[0070] In addition, in this embodiment, a limiting baffle 25 is installed on the upper end of the rotary hinge seat 3. The limiting baffle 25 is arranged above the horizontal wing 12. Specifically, the limiting baffle is installed on the top plate of the rotary hinge seat 3. A shock-absorbing mechanism 26 is arranged between the limiting baffle and the horizontal wing 12. Specifically, the shock-absorbing mechanism 26 has a shock-absorbing spring. One end of the shock-absorbing spring is connected to the limiting baffle 25, and the other end of the shock-absorbing spring is connected to the shock-absorbing plate. The horizontal wing 12 is connected to the shock-absorbing plate. Specifically, the shock-absorbing plate is fixedly connected to the hinge mating seat 16 of the horizontal wing 12. In addition, a guide rod is installed on the shock-absorbing plate. The guide rod passes through the through hole of the limiting baffle 25, so that when the shock-absorbing spring is compressed, the guide rod moves under the restriction of the through hole of the limiting baffle 25.

[0071] In this embodiment, a pull-down rope 27 is also installed on the modular tower 11 or the lower nacelle 1. The other end of the pull-down rope 27 is connected to the lower end of the horizontal wing 12. A telescopic spring 24 is also installed on the pull-down rope 27. The telescopic spring 24 can adapt to the angle change of the horizontal wing 12 and ensure the stability of the horizontal wing 12. In addition, adjacent horizontal wings 12 can be connected together to form a whole by connecting ropes. Telescopic springs 24 can also be installed on the connecting ropes.

[0072] Example 3

[0073] This embodiment is based on embodiment 1 or embodiment 2, and describes in detail the structure and function of the flexible coupling 6.

[0074] In this embodiment, the flexible coupling 6 is the upper connection structure of the speed increaser 9. The rotation of the horizontal wing 12 and the rotating hinge seat 3 drives the flexible coupling 6 to rotate, which in turn drives the gear inside the speed increaser 9 to rotate, causing the rotor of the generator 10 to rotate and generate electrical energy. The flexible coupling 6 in this embodiment includes an upper connecting plate and a lower connecting plate arranged at intervals. The lower connecting plate has a support column, which is movably connected to the upper connecting plate. Specifically, the support column is fixedly installed on the upper end of the lower connecting plate, and a bearing seat is installed on the lower end of the upper connecting plate. The upper end of the support column is inserted into the bearing seat. The outer periphery of the upper end of the support seat has a convex plate, and the outer periphery of the bearing seat slides in cooperation with the convex plate. Specifically, a sliding connecting plate 21 is installed on the outer periphery of the bearing seat, and a roller bracket is installed on the lower end of the sliding connecting plate 21. A roller is installed on the roller bracket, and the roller contacts the convex plate. The roller supports the sliding connecting plate 21 and assists the rotation of the support column and the lower connecting plate.

[0075] In this embodiment, multiple flexible connecting ropes are installed between the upper and lower connecting plates. One end of each flexible connecting rope is connected to the upper connecting plate, and the other end is connected to the lower connecting plate. The length of the flexible connecting rope is greater than the distance between the upper and lower connecting plates, so that when rotating, the flexible connecting rope is spirally wound around the outer circumference of the support column, and adjacent flexible connecting ropes abut against each other. When the horizontal wing 12 rotates, the rotating hinge seat 3 will not be rigidly connected to the speed increaser 9. When the rotating hinge seat 3 rotates, the upper connecting plate rotates, thereby pulling the flexible connecting rope. Under the pulling force of the flexible connecting rope and the friction of the adjacent flexible connecting ropes, the lower connecting plate is driven to rotate. The flexible connecting rope buffers the force transmitted from the rotating hinge seat 3 and inputs it into the speed increaser 9.

[0076] Example 4

[0077] This embodiment is based on Embodiment 1, Embodiment 2 or Embodiment 3, and describes in detail the structure and function of the active start device.

[0078] The active starting device of this embodiment includes a driven gear arranged inside the upper engine compartment 2 and an active gear meshing with the driven gear. The driven gear is fixed on the shaft at the lower end of the rotating hinge seat 3. As one implementation, the driven gear in this embodiment is an external gear with teeth arranged on the outer circumference of the external gear. The active gear is also an external gear, and a power input shaft is mounted on the active gear. The power input shaft is connected to the power input device through a clutch. The power input device in this embodiment includes a motor or other drive equipment. In this embodiment, a support seat for supporting the power input shaft is installed on the inner wall of the upper engine compartment 2. Bearings are installed at the upper and lower ends of the support seat. The power input shaft rotates inside the support seat. In addition, the clutch is also installed on the inner wall of the upper engine compartment 2. The inner wall of the inner engine compartment can be thickened and have annular and vertically arranged ribs added to enhance the strength of the inner engine compartment.

[0079] After the driving gear drives the driven gear to rotate and the horizontal blade 12 rotates, the clutch separates the power input shaft from the power input device, so that the driven gear follows the rotation of the horizontal blade 12 without affecting the power input device.

[0080] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0081] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. A horizontal wing wind turbine with adjustable wing angle, comprising a speed increaser, the output shaft of which is connected to a generator, characterized in that, The device includes a rotary hinge seat, on which a horizontal wing is hinged. The rotary hinge seat includes a vertical shaft. A column is provided at the upper end of the rotary hinge seat. A fixed pulley group is provided on the column. A rope winding and unwinding device is provided inside the column. A hoisting rope is provided on the rope winding and unwinding device. The hoisting rope passes through the fixed pulley group and is connected to the horizontal wing. A flexible coupling is provided below the rotary hinge seat, and the end of the flexible coupling is connected to a speed increaser. The windward area at the front of the horizontal wing is smaller than that at the rear of the horizontal wing. The windward area of ​​the horizontal wing first increases, reaches its maximum at the rear of the horizontal wing, and then decreases. The angle between the lower end of the horizontal wing and the horizontal plane is smaller than the angle between the upper end of the horizontal wing and the horizontal plane. The vertical shaft is provided with a plurality of hinge seats, which are evenly arranged around the center of the vertical shaft. Each hinge seat includes two spaced partitions, at least two fixed plates are provided between the partitions, a first hinge shaft is provided between the fixed plates, and a second hinge shaft is provided between the partitions and the fixed plates. The flexible coupling includes an upper connecting plate and a lower connecting plate arranged at intervals. A support column is provided on the lower connecting plate, and the support column is movably connected to the upper connecting plate. The lower connecting plate is connected to a speed increaser. A slip ring is provided at the upper end of the upper connecting plate, and a brake disc is provided at the upper end of the slip ring. A braking system is provided on the brake disc, and a rotating hinge seat is arranged above the brake disc and the braking system. Multiple flexible connecting ropes are provided between the upper connecting plate and the lower connecting plate. One end of the flexible connecting rope is connected to the upper connecting plate, and the other end of the flexible connecting rope is connected to the lower connecting plate. The flexible connecting ropes are spirally wound around the outer periphery of the support column, and adjacent flexible connecting ropes abut against each other.

2. The horizontal wing angle adjustable horizontal wing wind turbine as described in claim 1, characterized in that: The front end of the horizontal wing is provided with a hinged mating seat, which includes a first hinge plate and a second hinge plate arranged on the side of the first hinge plate. The first hinge plate is hinged to a first hinge shaft, and the second hinge plate is hinged to a second hinge shaft.

3. A horizontal wing wind turbine with adjustable wing angle as described in claim 2, characterized in that: The rear end of the horizontal wing is provided with a rear lifting ring, and the front end of the horizontal wing is provided with a front lifting ring. The rope winding and unwinding device is connected to the horizontal wing through a lifting device. The lifting rope includes a front lifting rope, a rear lifting rope, and a connecting lifting rope. The lifting device includes a front lifting block, a rear lifting block, and a connecting plate connected to the front and rear lifting blocks. The front and rear lifting blocks are arranged at an acute angle. A movable front ring is provided on the front lifting block, and a movable rear ring is provided on the rear lifting block. A movable connecting ring is provided on the connecting plate. One end of the connecting rope passes through a fixed pulley block and is connected to a rope winding and unwinding device. The other end of the connecting rope is connected to the connecting ring. One end of the front lifting rope is connected to the front ring, and the other end of the front lifting rope is connected to the front lifting ring. One end of the rear lifting rope is connected to the rear ring.

4. A horizontally adjustable wind turbine generator as described in claim 1, characterized in that: The speed increaser and generator are arranged in the lower engine compartment, and a support plate is provided in the lower engine compartment. The generator is mounted on the support plate. A modular tower is provided at the lower end of the lower nacelle, and the modular tower includes multiple tower sections connected together.

5. A horizontal wing wind turbine with adjustable wing angle as described in claim 1, characterized in that: It also includes an active start device; The active starting device includes a driven gear located inside the upper engine compartment and a driving gear meshing with the driven gear. The driving gear is equipped with a power input shaft, which is connected to a power input device via a clutch. The driven gear is mounted on a shaft at the lower end of a rotating hinge seat. The power input shaft and the clutch are mounted on the upper engine compartment.

6. A horizontal wing wind turbine with adjustable wing angle as described in claim 1, characterized in that: The rotating hinge seat is provided with a limit baffle, which is arranged above the horizontal wing. A shock absorption mechanism is provided between the limit baffle and the horizontal wing.

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