Floating type offshore wind power generation device and working method thereof

Abstract

The invention belongs to the technical field of wind power generation, and relates to a floating type offshore wind power generation device and a working method thereof.The floating type offshore wind power generation device comprises a supporting mechanism, a shell is arranged above the supporting mechanism, a sliding rod is fixedly connected to the bottom of the shell, a moving cylinder is rotationally connected to the bottom of the shell, and a lead screw is rotationally arranged on the supporting mechanism; a power generator is fixedly arranged in the shell, the input end of the power generator is rotationally connected with a rotating shaft, the end of the rotating shaft is coaxially and fixedly connected with an impeller seat, and a telescopic assembly is arranged on the shell; the telescopic assembly drives a moving plate located on the rotating shaft to slide between the impeller base and the shell, the rotating shaft is coaxially and slidably sleeved with the moving plate, and a plurality of fan blades are hinged between the moving plate and the impeller base. The wind driven generator has the advantages that the fan blades rotate to be gradually parallel to the rotating shaft, so that wind force borne by the fan blades is reduced, and the situation that the generator is damaged due to too large wind force is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and relates to a floating offshore wind power generation device and a working method thereof. Background Art

[0002] Wind power generation is the most promising renewable energy generation technology besides hydropower generation. Since offshore wind speed is high, it is not affected by obstacles and surface roughness, the wind speed and direction are more stable, the turbulence is small, and it is close to the onshore power consumption center, so the development value of offshore wind power is extremely high. Therefore, an offshore wind power generation device is needed.

[0003] In existing wind turbines, the fan blades are mostly fixed on the hub, so that the opening angle of the fan blades is fixed. When the wind force is too strong and exceeds the load limit of the wind turbine, the wind turbine is easily damaged.

[0004] In order to solve the above problems, the present invention proposes a floating offshore wind power generation device and a working method thereof. Summary of the invention

[0005] In order to solve the problems existing in the background technology, the present invention proposes a floating offshore wind power generation device and a working method thereof.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: comprising a support mechanism, a shell is arranged above the support mechanism, a sliding rod is fixedly connected to the bottom of the shell, a moving cylinder is rotatably connected to the bottom of the shell, a screw rod is rotatably arranged on the support mechanism, the bottom end of the moving cylinder is threadedly sleeved on the screw rod, and the bottom of the sliding rod is slidably arranged inside the screw rod;

[0007] A limit assembly is provided on the supporting mechanism, and the limit assembly restricts the moving cylinder to move only up and down;

[0008] A generator is fixedly arranged inside the shell, and an input end of the generator is rotatably connected to a rotating shaft, and an end of the rotating shaft is coaxially fixedly connected to an impeller seat. A telescopic component is arranged on the shell, and the telescopic component drives a movable plate located on the rotating shaft to slide between the impeller seat and the shell. The movable plate is coaxially slidably sleeved on the rotating shaft, and a plurality of fan blades are hinged between the movable plate and the impeller seat.

[0009] Furthermore, the support mechanism includes three bases and three connecting columns, the three bases and the three connecting columns form an equilateral triangle, the three bases are located at three end points of the equilateral triangle, and the three connecting columns are three sides of the equilateral triangle.

[0010] Furthermore, a cylindrical box is fixedly connected to the middle of the equilateral triangle formed by the three connecting columns, the box is arranged vertically, a slide groove is opened on the box, a motor is fixedly connected to the bottom surface of the slide groove, and the screw is fixedly connected to the output end of the motor;

[0011] The position limiting assembly comprises a sliding block, the sliding block is fixedly connected to the bottom of the moving cylinder, the sliding block is slidably connected to the inside of the sliding groove, and the sliding block is threadedly sleeved on the screw rod.

[0012] Furthermore, two symmetrical limit blocks are fixedly connected to the outer surface of the sliding block, two limit grooves are arranged on the side wall of the sliding groove, and the limit blocks are slidably connected in the corresponding limit grooves.

[0013] Furthermore, a groove is provided on the screw rod, and two symmetrical limiting strips are fixedly connected to the outer surface of the sliding rod, and the bottoms of the sliding rod and the two limiting strips are slidably arranged in the groove.

[0014] Furthermore, the telescopic assembly includes a hydraulic cylinder, which is fixedly connected to the inside of the shell, and a hydraulic rod at the output end of the hydraulic cylinder slides through the side of the shell. One end of the hydraulic rod at the output end of the hydraulic cylinder is fixedly connected to a fixed plate, and the fixed plate is slidably sleeved on the rotating shaft, and the fixed plate is rotatably connected to the movable plate.

[0015] Furthermore, the diameter of the movable plate is smaller than the diameter of the impeller seat, and a plurality of fan blades are distributed in a circular array about the rotating shaft. A turnover channel is evenly opened on the outer surface of the impeller seat, and an annular turnover plate is rotatably connected inside the turnover channel. A sponge layer is fixedly connected to the inner wall of the turnover plate, and one end of the fan blade is slidably arranged in the corresponding turnover plate, and the fan blade and the sponge layer are slidably matched;

[0016] The outer surface of the movable plate is provided with mounting grooves, the number of which is equal to the number of the flip channels, and the mounting grooves correspond to the flip channels one by one, respectively, and the other end of the fan blade is rotatably connected to the corresponding mounting groove.

[0017] A working method, using any of the above floating offshore wind power generation devices, comprises the following steps:

[0018] S1. Height adjustment, that is, adjusting the height of the fan blades; the screw rod rotates inside the slider, so that the slider slides vertically inside the slide slot, and the slider pushes the moving cylinder, the housing, and the fan blades to move up and down;

[0019] S2. The first angle adjustment is to adjust the horizontal angle of all the fan blades. During the height adjustment process, the screw rod drives the slide rod to rotate together, so that the slide rod drives the housing to rotate, and the housing rotates on the moving cylinder, driving the fan blades to rotate;

[0020] S3. The second angle adjustment is to adjust the opening angle of a single fan blade; the fixed plate and the movable plate are pushed to slide on the rotating shaft by the hydraulic cylinder, thereby changing the distance between the movable plate and the impeller seat, so that one end of the fan blade rotates on the movable plate, and the other end of the fan blade slides on the flip plate, and the flip plate will drive the fan blade to rotate at the same time.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The floating offshore wind turbine is provided with a moving cylinder. The slider at the bottom of the moving cylinder is threadedly sleeved on the screw rod. The screw rod is driven by a motor to rotate, so that the slider slides inside the slide groove, thereby pushing the moving cylinder to move upward or downward, changing the height of the shell and the fan blades, so that the generator can receive wind forces of different sizes.

[0023] 2. The floating offshore wind power generation device is provided with a sliding rod, which is fixedly connected to the bottom of the shell. When the screw drives the shell to move up and down, the screw will drive the sliding rod to rotate, causing the shell to rotate, and then the entire fan blades to rotate, so that the fan blades can be used to face the wind, thereby improving the power generation efficiency.

[0024] 3. The floating offshore wind turbine is provided with a fan blade, one end of which is hinged on the impeller seat, and the other end of the fan blade is connected to the movable plate. The fixed plate is pushed by the hydraulic cylinder to drive the movable plate to slide on the rotating shaft. The distance between the movable plate and the impeller seat increases, and the movable plate will pull one end of the fan blade to rotate the fan blade until it gradually becomes parallel to the rotating shaft, so that the wind force on the fan blade is reduced, thereby reducing the situation where the generator is damaged by excessive wind force. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the moving cylinder in the present invention;

[0027] Figure 3 It is a structural schematic diagram of the slider in the present invention;

[0028] Figure 4 The present invention Figure 3 The enlarged structural diagram of the middle A part;

[0029] Figure 5 It is a structural schematic diagram of the fixing plate in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the impeller seat in the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the fan blade in the present invention;

[0032] Figure 8 It is a structural schematic diagram of the movable plate in the present invention.

[0033] In the figure: 1. base; 2. connecting column; 3. box body; 4. impeller seat; 5. rotating shaft; 6. flip channel; 7. flip plate; 8. moving plate; 9. fixed plate; 10. shell; 11. fan blade; 12. motor; 13. screw rod; 14. slide groove; 15. moving cylinder; 16. slider; 17. hydraulic cylinder; 18. generator; 19. slide rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-Figure 8 As shown, the technical solution adopted by the present invention is as follows: A floating offshore wind power generation device includes a support mechanism. The support mechanism includes three bases 1 and three connecting columns 2, and the three bases 1 and the three connecting columns 2 form an equilateral triangle. The three bases 1 are located at the three end points of the equilateral triangle, and the three connecting columns 2 are the three sides of the equilateral triangle.

[0036] The base 1 is provided with a regulating pump inside, through which seawater is pumped into the base 1, so that most of the bottom of the base 1 is located in the seawater, so that the device remains stable. The specific structure of the base 1 is described in detail in a floating wind power generation device disclosed in Chinese patent CN112160875B, and will not be described in detail.

[0037] A screw rod 13 is rotatably arranged on the support mechanism. A housing 10 is arranged above the support mechanism. A cylindrical box 3 is fixedly connected to the middle of the equilateral triangle formed by the three connecting columns 2. Three connecting rods are fixedly connected to the outer surface of the bottom end of the box 3, and the connecting rods are distributed in a circumferential array with respect to the box 3, and the other ends of the connecting rods are fixed to the corresponding base 1.

[0038] The box body 3 is arranged vertically, and a slide groove 14 is opened on the box body 3 . The bottom surface of the slide groove 14 is fixedly connected to the motor 12 , and the screw rod 13 is fixedly connected to the output end of the motor 12 .

[0039] The bottom of the housing 10 is fixedly connected to a slide rod 19 , and the bottom of the housing 10 is rotatably connected to a moving cylinder 15 .

[0040] The bottom of the slide rod 19 is slidably arranged inside the screw rod 13 .

[0041] The screw rod 13 is provided with a groove, and the outer surface of the slide rod 19 is fixedly connected with two symmetrical limit bars, and the bottoms of the slide rod 19 and the two limit bars are slidably arranged in the groove, so that the slide rod 19 can only slide vertically up and down on the screw rod 13.

[0042] The bottom end of the moving cylinder 15 is threadedly sleeved on the screw rod 13 .

[0043] A slider 16 is fixedly connected to the bottom of the moving cylinder 15 . The slider 16 is slidably connected to the inside of the slide groove 14 . The slider 16 is threadedly sleeved on the screw rod 13 .

[0044] The outer surface of the slider 16 is fixedly connected with two symmetrical limit blocks, and the side wall of the slide 14 is provided with two limit grooves, and the limit blocks are slidably connected in the corresponding limit grooves, so that the slider 16 can only slide vertically up and down inside the slide 14.

[0045] A generator 18 is fixedly arranged inside the housing 10, and the input end of the generator 18 is rotatably connected to a rotating shaft 5, which rotates through the housing 10 and is arranged horizontally. The end of the rotating shaft 5 is coaxially fixedly connected to an impeller seat 4, and a telescopic assembly is arranged on the housing 10, which drives a moving plate 8 located on the rotating shaft 5 to slide between the impeller seat 4 and the housing 10. The moving plate 8 is coaxially slidably sleeved on the rotating shaft 5, and a plurality of fan blades 11 are hinged between the moving plate 8 and the impeller seat 4.

[0046] The telescopic assembly includes a hydraulic cylinder 17, which is fixedly connected to the inside of the housing 10. A hydraulic rod at the output end of the hydraulic cylinder 17 slides through the side of the housing 10, and one end of the hydraulic rod at the output end of the hydraulic cylinder 17 is fixedly connected to a fixed plate 9, which is slidably sleeved on the rotating shaft 5, and the fixed plate 9 is rotatably connected to the movable plate 8.

[0047] A plurality of blades 11 are distributed in a circumferential array about the rotating shaft 5. Turnover channels 6 are evenly opened on the outer surface of the impeller seat 4, and an annular turnover plate 7 is rotatably connected inside the turnover channel 6, and a sponge layer is fixedly connected to the inner wall of the turnover plate 7. One end of the blade 11 is slidably arranged in the corresponding turnover plate 7, and the blade 11 is slidably matched with the sponge layer.

[0048] The outer surface of the movable plate 8 is provided with mounting grooves, the number of which is equal to the number of the turning channels 6, and the mounting grooves correspond to the turning channels 6 one by one. The other end of the fan blade 11 is rotatably connected to the corresponding mounting groove.

[0049] The diameter of the moving plate 8 is smaller than the diameter of the impeller seat 4, so that the fan blade 11 is always in an inclined state relative to the rotating shaft 5, and when the moving plate 8 pushes the fan blade 11, the rotation of the fan blade 11 is smoother and more stable.

[0050] A working method, using the floating offshore wind power generation device as described above, comprises the following steps:

[0051] S1. Height adjustment, that is, adjusting the height of the fan blade 11. The screw rod 13 rotates inside the slider 16, so that the slider 16 slides vertically inside the slide groove 14, and the slider 16 pushes the moving cylinder 15, the housing 10, and the fan blade 11 to move up and down. The fan blade 11 moves up and down, so that the fan blade 11 is in different wind forces.

[0052] S2. The first angle adjustment is to adjust the horizontal angles of all the blades 11. During the height adjustment process, the screw rod 13 drives the slide bar 19 to rotate together, so that the slide bar 19 drives the housing 10 to rotate, and the housing 10 rotates on the moving cylinder 15, driving the blades 11 to rotate.

[0053] S3. The second angle adjustment is to adjust the opening angle of a single blade 11. The hydraulic cylinder 17 pushes the fixed plate 9 and the movable plate 8 to slide on the rotating shaft 5, changes the distance between the movable plate 8 and the impeller seat 4, and then makes one end of the blade 11 rotate on the movable plate 8, and the other end of the blade 11 slides on the flip plate 7, and the flip plate 7 drives the blade 11 to rotate.

[0054] Working principle:

[0055] When in use, the motor 12 is started, and the output shaft of the motor 12 rotates forward, driving the screw rod 13 to rotate.

[0056] The screw rod 13 will drive the slide bar 19 to rotate together, and the slide bar 19 will drive the housing 10 to rotate. The rotating shaft 5, the impeller seat 4, and the fan blades 11 will rotate in the horizontal direction. The housing 10 will rotate at the top of the moving cylinder 15. The fan blades 11 are rotated to the windward position, which increases the rotation speed of the rotating shaft 5 and improves the power generation efficiency.

[0057] The screw rod 13 rotates inside the slider 16, and the slider 16 slides upward inside the slide groove 14, so that the moving cylinder 15 moves upward, driving the housing 10 to move upward.

[0058] On the contrary, the output shaft of the motor 12 rotates in the reverse direction, which also drives the housing 10 to rotate. The slider 16 drives the moving cylinder 15 and the housing 10 to move downward, thereby changing the height of the fan blades 11 and the rotating shaft 5, so that the generator 18 receives wind forces of different magnitudes.

[0059] After the adjustment, the wind will drive the fan blades 11 to rotate, and the fan blades 11 will drive the impeller seat 4 and the moving plate 8 to rotate, so that the rotating shaft 5 rotates, and the generator 18 generates electricity.

[0060] During use, if the wind force on the sea surface is too strong, the hydraulic cylinder 17 is started, so that the hydraulic rod at the output end of the hydraulic cylinder 17 pulls the fixed plate 9, so that the fixed plate 9 and the movable plate 8 slide on the rotating shaft 5 to the side close to the housing 10.

[0061] The moving plate 8 pulls one end of the fan blade 11, so that one end of the fan blade 11 rotates on the moving plate 8, and the other end of the fan blade 11 slides on the flip plate 7, and the flip plate 7 also rotates. The sponge layer in the flip plate 7 also cleans the outer surface of the fan blade 11.

[0062] When the fan blades 11 slide, they will gradually rotate until they are parallel to the rotating shaft 5, so that the wind force on the fan blades 11 is reduced, thereby reducing the situation where the generator 18 is damaged by excessive wind force.

[0063] When the wind force on the sea surface is normal, the hydraulic rod at the output end of the hydraulic cylinder 17 is extended, pushing the fixed plate 9 and the movable plate 8 to the side away from the housing 10. One end of the fan blade 11 extends out of the flip plate 7 and moves to the side away from the movable plate 8. The fan blade 11 gradually rotates until it is perpendicular to the rotating shaft 5. At this time, the fan blade 11 can normally receive wind force, so that the generator 18 generates electricity.

[0064] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A floating offshore wind power generation device, characterized in that: The invention comprises a supporting mechanism, wherein a shell (10) is arranged above the supporting mechanism, a sliding rod (19) is fixedly connected to the bottom of the shell (10), a moving cylinder (15) is rotatably connected to the bottom of the shell (10), a screw rod (13) is rotatably arranged on the supporting mechanism, the bottom end of the moving cylinder (15) is threadedly sleeved on the screw rod (13), and the bottom of the sliding rod (19) is slidably arranged inside the screw rod (13); a limiting component is arranged on the supporting mechanism, and the limiting component limits the moving cylinder (15) to move only up and down; A generator (18) is fixedly arranged inside the housing (10); an input end of the generator (18) is rotatably connected to a rotating shaft (5); an end of the rotating shaft (5) is coaxially fixedly connected to an impeller seat (4); a telescopic assembly is arranged on the housing (10); the telescopic assembly drives a movable plate (8) located on the rotating shaft (5) to slide between the impeller seat (4) and the housing (10); the movable plate (8) is coaxially slidably sleeved on the rotating shaft (5); and a plurality of fan blades (11) are hingedly connected between the movable plate (8) and the impeller seat (4).

2. A floating offshore wind power generation device according to claim 1, characterized in that: The support mechanism comprises three bases (1) and three connecting columns (2); the three bases (1) and the three connecting columns (2) form an equilateral triangle; the three bases (1) are located at three end points of the equilateral triangle; and the three connecting columns (2) are three sides of the equilateral triangle.

3. A floating offshore wind power generation device according to claim 2, characterized in that: A cylindrical box (3) is fixedly connected to the middle of the equilateral triangle formed by the three connecting columns (2); the box (3) is arranged vertically, a slide groove (14) is provided on the box (3), a motor (12) is fixedly connected to the bottom surface of the slide groove (14), and a screw rod (13) is fixedly connected to the output end of the motor (12); The position limiting assembly comprises a slider (16), the slider (16) is fixedly connected to the bottom of the moving cylinder (15), the slider (16) is slidably connected to the inside of the slide groove (14), and the slider (16) is threadedly sleeved on the screw rod (13).

4. A floating offshore wind power generation device according to claim 3, characterized in that: The outer surface of the sliding block (16) is fixedly connected to two symmetrical limit blocks, and the side wall of the sliding groove (14) is provided with two limit grooves, and the limit blocks are slidably connected in the corresponding limit grooves.

5. The floating offshore wind power generation device according to claim 1, characterized in that: The screw rod (13) is provided with a groove, and the outer surface of the slide rod (19) is fixedly connected to two symmetrical limit strips, and the bottoms of the slide rod (19) and the two limit strips are slidably arranged in the groove.

6. A floating offshore wind power generation device according to claim 1, characterized in that: The telescopic assembly comprises a hydraulic cylinder (17), the hydraulic cylinder (17) is fixedly connected to the inside of the housing (10), a hydraulic rod at the output end of the hydraulic cylinder (17) slides through the side of the housing (10), one end of the hydraulic rod at the output end of the hydraulic cylinder (17) is fixedly connected to a fixed plate (9), the fixed plate (9) is slidably sleeved on the rotating shaft (5), and the fixed plate (9) is rotatably connected to the movable plate (8).

7. A floating offshore wind power generation device according to claim 6, characterized in that: The diameter of the movable plate (8) is smaller than the diameter of the impeller seat (4); a plurality of blades (11) are distributed in a circular array about the rotating shaft (5); a turnover channel (6) is evenly opened on the outer surface of the impeller seat (4); an annular turnover plate (7) is rotatably connected inside the turnover channel (6); a sponge layer is fixedly connected to the inner wall of the turnover plate (7); one end of the blade (11) is slidably arranged in the corresponding turnover plate (7); the blade (11) and the sponge layer are slidably matched; The outer surface of the movable plate (8) is provided with mounting grooves, the number of which is equal to the number of the flip channels (6), and the mounting grooves correspond to the flip channels (6) one by one, and the other end of the fan blade (11) is rotatably connected to the corresponding mounting groove.

8. A working method, characterized in that: Using the floating offshore wind power generation device according to any one of claims 1 to 7 comprises the following steps: S1. Height adjustment, i.e., adjusting the height of the fan blade (11); the screw rod (13) rotates inside the slider (16), so that the slider (16) slides vertically inside the slide groove (14), and the slider (16) pushes the moving cylinder (15), the housing (10), and the fan blade (11) to move up and down; S2. The first angle adjustment is to adjust the horizontal angle of all the fan blades (11); during the height adjustment process, the screw rod (13) drives the slide rod (19) to rotate together, so that the slide rod (19) drives the housing (10) to rotate, and the housing (10) rotates on the moving cylinder (15), driving the fan blades (11) to rotate; S3. The second angle adjustment is to adjust the opening angle of a single blade (11); the fixed plate (9) and the movable plate (8) are pushed to slide on the rotating shaft (5) by the hydraulic cylinder (17), thereby changing the distance between the movable plate (8) and the impeller seat (4), thereby causing one end of the blade (11) to rotate on the movable plate (8), and the other end of the blade (11) to slide on the flip plate (7), and at the same time, the flip plate (7) will drive the blade (11) to rotate.

Images