Offshore wind power equipment with floating foundation

Abstract

The invention discloses an offshore wind power equipment with a floating foundation, which relates to the field of floating foundations, including a floating platform and a wind turbine generator set. A column is provided at the bottom of the floating platform, a lower bracket is welded and fixed at the bottom end of the column, fixed buoys are provided at the three vertices of the lower bracket, an upper bracket is welded and fixed at the top of the floating platform, three groups of guide rails are arranged between adjacent upper brackets, each guide rail is slidably connected with a slide seat, a movable buoy is installed at the bottom of the slide seat, a wind speed and direction sensor is installed at the top of one of the slide seats, a steering mechanism is provided on the guide rail and on one side close to the floating platform, a first locking mechanism is provided on the upper bracket and close to the center, a driving mechanism is provided on the inner side of the slide seat, and a second locking mechanism is provided on the inner side of the slide seat and close to the driving mechanism. The offshore wind power equipment with a floating foundation further supports the floating foundation to reduce the tilt amplitude of the wind turbine generator set and improve the wind resistance stability by flexibly adjusting the position of the movable buoy.

Description

Technical Field

[0001] The present invention relates to the technical field of floating foundations, and in particular to an offshore wind power device with a floating foundation. Background Art

[0002] A floating wind power platform is a device that can float in the water and capture wind energy for power generation. It mainly includes column type, semi-submersible type, tension leg type and barge type. It floats in the water and maintains a balanced state by injecting water ballast inside the floating body to overcome the shaking effect of seawater on the wind turbine foundation.

[0003] In the prior art, wind turbines are usually installed on floating foundations so that they float on the sea and generate electricity using sea breeze. Since the wind turbine cabin has a large mass and is installed at a high height and a large distance from the water surface, when the wind is too strong, the wind turbine will be subjected to a large wind tilting moment on the windward side, causing the platform motion characteristics to change under a large force. The wind turbine will tilt greatly under the action of wind, and the anchor cable on one side of the floating foundation will be subjected to a large tension, affecting the overall stability of the floating foundation. Summary of the invention

[0004] Technical problem to be solved: Wind power equipment will tilt greatly under the action of wind, and the anchor cable on one side of the floating foundation will be subjected to greater tension, affecting the overall stability of the floating foundation.

[0005] In view of the deficiencies in the prior art, the present invention provides an offshore wind power device with a floating foundation, thereby solving the technical problems mentioned in the background technology.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A floating foundation offshore wind power equipment, comprising a floating platform and a wind turbine set, wherein a column is welded and fixed at the bottom of the floating platform, and lower brackets distributed in an equilateral triangle are welded and fixed on the column near the bottom, and fixed buoys are arranged at the three vertices of the lower brackets, and three groups of upper brackets distributed in a ring array are welded and fixed on the top of the floating platform, and three groups of guide rails distributed at intervals are arranged between adjacent upper brackets, and each of the guide rails is slidably connected with a slide seat, and a movable buoy is installed at the bottom of the slide seat, and a wind speed and direction sensor is installed on the top of one of the slide seats, and a wind speed and direction sensor is installed on the guide rail near the floating platform. A steering mechanism for controlling the rotation of the guide rail is provided on the side, the steering mechanism includes a rotating seat, a connecting seat and a first motor, a first locking mechanism is provided on the upper bracket and near the center, the first locking mechanism includes a limit seat 44 and a locking seat 7, which are used to fix the guide rail, a driving mechanism for driving the slide to move along the guide rail is provided on the inner side of the slide, the driving mechanism includes a driving wheel and a gear, a second locking mechanism is provided on the inner side of the slide and near the driving mechanism, the second locking mechanism includes a bidirectional screw 54 and clamping blocks 55 symmetrically distributed on the bidirectional screw 54, which are used to fix the slide.

[0008] In one possible implementation, a mounting seat is provided above the floating platform, and the interior of the mounting seat is a hollow structure. The bottom of the mounting seat is welded and fixed to the center of the upper bracket, and an integrally formed mounting column is provided on the top of the mounting seat for installing and fixing the wind turbine set. A positioning sleeve is provided at the bottom center of the column.

[0009] In one possible implementation, connecting rings are installed on the outer wall and bottom of the fixed buoy, an anchor seat is provided below the fixed buoy and located on the outside of the fixed buoy, two anchor cables are fixedly connected to the top of the anchor seat, and the ends of the two anchor cables are respectively fixedly connected to the connecting rings on the outer wall and bottom of the fixed buoy.

[0010] In one possible implementation, a fixed block is welded and fixed to the end of the upper bracket, a connecting rod fixedly connected to the fixed block is provided on the top of the fixed buoy, a boat-shaped floating block is installed on the bottom of the fixed block, and arc guide rods are fixedly connected between adjacent fixed blocks. A wave-breaking plate with an arc-shaped cross-section is provided on the outer side of the arc guide rod, and both ends of the wave-breaking plate are respectively fixedly connected to the fixed blocks on both sides.

[0011] In a possible implementation, the rotating seat is arranged at one end of the guide rail and is rotatably connected to the floating platform, the connecting seat is arranged at the other end of the guide rail and is slidably connected to the arc guide rod, three groups of evenly distributed mounting rods are arranged on the top of the floating platform and between adjacent upper brackets, a movable hole is opened at the bottom center of the rotating seat, the rotating seat is rotatably connected to the mounting rod through the movable hole, the three groups of the first motors are installed on the inner side of the mounting seat in a circular array, and are coaxially transmitted with the three groups of rotating seats respectively, for driving the rotating seat to rotate on the mounting rod, and a ball bearing is embedded on the connecting seat and on the outer side of the arc guide rod.

[0012] In a possible implementation, the guide rail has an I-shaped cross-section, movable grooves are provided on both sides of the guide rail, the slide is slidably provided on the guide rail, a protective shell is installed on the top of the slide, two groups of driving wheels are symmetrically provided inside the slide, and the surfaces of the driving wheels are in contact with the movable grooves, the two groups of driving wheels are rotatably connected to the slide through a rotating shaft, gears are installed on the rotating shaft of the driving wheel and inside the protective shell, the two groups of gears are meshed for transmission, and a second motor with coaxial transmission is installed on the top of the protective shell and above the driving wheel on one side.

[0013] In a possible implementation, the limit seat is arranged at the bottom end of the rotating seat and is integrally formed with the rotating seat, a plurality of evenly distributed tooth grooves are arranged on the top of the limit seat and on the side away from the guide rail, the locking seat is arranged at the lower center of the upper bracket, a limit column is arranged at the bottom of the locking seat, a plurality of evenly distributed tooth blocks are arranged on the outer wall of the limit column, the tooth blocks are snap-fitted with the tooth grooves, a rubber pad is bonded and fixed to the bottom of the locking seat and on the outer side of the limit column, a hydraulic cylinder is installed above the upper bracket and on the inner side of the mounting seat, and the piston rod of the hydraulic cylinder is fixedly connected to the locking seat.

[0014] In a possible implementation, the bidirectional screw is arranged on the inner side of the slide and close to the edge, the end of the bidirectional screw is rotatably connected to the slide, the bidirectional screw is provided with symmetrically distributed clamping blocks, one end of the clamping block is slidably connected to the slide, and the other end of the clamping block extends to the inner side of the movable groove, and a third motor is installed on the top of the slide and close to the second motor, and the third motor is coaxially driven with the bidirectional screw.

[0015] In one possible implementation, a counterweight block is welded and fixed to the bottom of the movable buoy, a fixing rod penetrating the movable buoy is provided on the top of the counterweight block, the top of the fixing rod is fixedly connected to the slide seat, a pumping pipe extending to the bottom end of the counterweight block is provided on the outside of the movable buoy, the top of the pumping pipe penetrates the movable buoy and extends to the inside of the movable buoy, a pump body is installed at the end of the pumping pipe and inside the movable buoy, and a control valve is installed on the pumping pipe and close to the pump body.

[0016] In one possible implementation, a balancing mechanism is provided below the column, and the balancing mechanism includes a vertical rod, a balancing sleeve and a steel wire rope. The vertical rod is arranged below the column, and a vertical block is fixedly connected to the bottom of the vertical rod, and a balancing sleeve is provided on the outer side of the vertical rod and is sleeved above the vertical block. The vertical rod is slidably connected to the balancing sleeve, and three groups of zippers distributed in a circular array are fixedly connected to the outer side of the balancing sleeve, and the other end of the zipper is fixedly connected to a connecting ring that fixes the bottom of the buoy, and the steel wire rope is arranged on the top of the vertical rod, and extends to the inside of the mounting seat after passing through the positioning sleeve, and an electric hoist for winding the steel wire rope is installed inside the mounting seat.

[0017] Beneficial effects: In this scheme, by providing a steering mechanism, a driving mechanism and a movable buoy, when the wind turbine is subjected to a large wind tilting moment on the windward side, the three sets of steering mechanisms can be independently controlled to adjust the three sets of guide rails to a suitable angle, and the driving mechanism drives the slide to slide along the guide rail to adjust the movable buoy to a suitable position, so that the position of the movable buoy can be flexibly adjusted, and the floating foundation is further supported by the movable buoy to reduce the inclination of the wind turbine and improve the stability of the floating foundation in a strong wind environment.

[0018] In this solution, a first locking mechanism and a second locking mechanism are provided. The first locking mechanism cooperates with the limit seat and the locking seat to lock and fix the adjusted guide rail, and the second locking mechanism cooperates with the bidirectional screw and the clamping block to fix the adjusted slide, thereby locking and fixing the movable buoy to prevent the adjusted movable buoy from moving and affecting the stability of the floating foundation.

[0019] In this solution, by providing a balancing mechanism, the position of the vertical block can be controlled through the cooperation of the vertical rod, the balancing sleeve and the wire rope, thereby adjusting the center of gravity of the floating foundation, further improving the stability of the floating foundation in a strong wind environment, and avoiding excessive inclination angle of the overall wind power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the floating foundation structure of the present invention;

[0023] Figure 3It is a schematic diagram of the lower bracket structure of the present invention;

[0024] Figure 4 This is one of the schematic diagrams of the upper bracket structure of the present invention;

[0025] Figure 5 This is the second schematic diagram of the upper bracket structure of the present invention;

[0026] Figure 6 A top view of the floating foundation of the present invention;

[0027] Figure 7 It is a schematic diagram of the guide rail structure of the present invention;

[0028] Figure 8 It is a cross-sectional view of the slide structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the fixing mechanism of the present invention;

[0030] Fig.10 It is a schematic diagram of the locking mechanism of the present invention;

[0031] Fig.11 It is a schematic diagram of the locking seat structure of the present invention;

[0032] Fig.12 It is a schematic diagram of the internal structure of the movable buoy of the present invention;

[0033] Fig.13 It is a schematic diagram of the balancing mechanism of the present invention.

[0034] Legend: 1. Floating platform; 11. Column; 12. Mounting seat; 121. Mounting column; 13. Positioning sleeve; 14. Mounting rod; 2. Lower bracket; 21. Fixed buoy; 22. Connecting rod; 23. Connecting ring; 24. Anchor cable; 25. Anchor seat; 3. Upper bracket; 31. Fixed block; 311. Boat-shaped floating block; 32. Arc guide rod; 33. Wave-breaking board; 4. Guide rail; 41. Rotating seat; 411. Movable hole; 42. Connecting seat; 421. Ball; 43. First motor; 44. Limiting seat; 441. Tooth groove; 45. Movable groove; 5 , sliding seat; 51, protective shell; 52, driving wheel; 53, gear; 531, second motor; 54, bidirectional screw; 55, clamping block; 56, third motor; 57, wind speed and direction sensor; 6, movable buoy; 61, counterweight block; 611, fixing rod; 62, suction pipe; 63, pump body; 64, control valve; 7, locking seat; 71, limiting column; 72, gear block; 73, rubber pad; 74, hydraulic cylinder; 8, vertical rod; 81, vertical block; 82, balance sleeve; 821, zipper; 83, wire rope; 84, electric hoist; 9, wind turbine set. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms, so the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components that are not connected with the invention will be omitted from the drawings.

[0036] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0037] Embodiment 1: This embodiment introduces a specific structure of an offshore wind power equipment with a floating foundation, such as Figure 1-Figure 13 As shown, it includes a floating platform 1 and a wind turbine 9, a column 11 is welded and fixed at the bottom of the floating platform 1, and a lower bracket 2 distributed in an equilateral triangle is welded and fixed on the column 11 and near the bottom end, and fixed buoys 21 are arranged at the three vertices of the lower bracket 2, and three groups of upper brackets 3 distributed in a ring array are welded and fixed on the top of the floating platform 1, and three groups of guide rails 4 distributed at intervals are arranged between adjacent upper brackets 3, and each guide rail 4 is slidably connected with a slide 5, and a movable buoy 6 is installed at the bottom of the slide 5, and a wind speed and direction sensor 57 is installed on the top of one of the slides 5, and a steering mechanism for controlling the rotation of the guide rail 4 is provided on the guide rail 4 and on one side close to the floating platform 1, which is used to drive the guide rail 4 to move between adjacent upper brackets 3. The guide rail 4 is rotated between the upper bracket 3 to adjust the rotation range of 0°-120°. The steering mechanism includes a rotating seat 41, a connecting seat 42 and a first motor 43. A first locking mechanism is provided on the upper bracket 3 near the center. The first locking mechanism includes a limit seat 44 and a locking seat 7 for fixing the guide rail 4. A driving mechanism for driving the slide 5 to move along the guide rail 4 is provided on the inner side of the slide 5. The driving mechanism includes a driving wheel 52 and a gear 53. A second locking mechanism is provided on the inner side of the slide 5 near the driving mechanism. The second locking mechanism includes a bidirectional screw 54 and clamping blocks 55 symmetrically distributed on the bidirectional screw 54 for fixing the slide 5.

[0038] The floating platform 1 is located at the center of the equilateral triangle, and the three groups of fixed buoys 21 are respectively located at the vertices of the equilateral triangle. The floating platform 1 and the fixed buoys 21 cooperate with each other to form a floating foundation of the wind turbine group 9, which is used to install and fix the wind turbine group 9. After fixation, the fixed buoys 21 are suspended in the sea water, which can reduce the impact of waves on the fixed buoys 21, so that the fixed buoys 21 have higher stability.

[0039] During use, the wind direction and wind speed are monitored by the wind speed and direction sensor 57. When the wind speed on one side is too large and causes the wind turbine 9 to bear a large wind tilting moment on the windward side, causing the wind turbine equipment to tilt as a whole, the three groups of steering mechanisms are independently controlled to make the three groups of first motors 43 drive the rotating seat 41 to rotate respectively, and adjust the guide rail 4 to a suitable angle. After that, the driving wheel 52 and the gear 53 cooperate with each other to drive the slide 5 to slide along the guide rail 4, and adjust the movable buoy 6 to a suitable position, so that the movable buoy 6 enhances the supporting effect of the leeward side, thereby improving the stability of the floating foundation. In the prior art, the optimal working wind speed of offshore wind power equipment is 9-12 m / s. When the wind speed exceeds 12 m / s, under the action of wind force, the wind turbine 9 bears a large wind tilting moment, and causes the tower of the wind turbine 9 to have a tilt of 5°-10°. Therefore, when the wind speed and direction sensor 57 detects that the wind speed is close to 12 meters per second, the control system inside the wind turbine 9 will start to control the three steering mechanisms and driving mechanisms to operate separately, so that the first motor 43 drives the rotating seat 41 to rotate, and drives the guide rail 4 to rotate, and adjusts the angle between the adjacent guide rails 4 and the upper bracket 3, so that the two movable buoys 6 and the adjacent fixed buoys 21 cooperate to form a plurality of evenly distributed support points on the inclined side of the wind turbine 9, and expand the effective support range, so as to control the inclination of the tower of the wind turbine 9 to be below 5°, and prevent the wind turbine 9 from excessively tilting. After adjustment, the first locking mechanism and the second locking mechanism cooperate with each other to lock and fix the guide rail 4 and the slide seat 5, so as to prevent the movable buoy 6 from moving under the impact of water waves, thereby enhancing the stability of the floating foundation and reducing the tilt amplitude of the wind turbine 9.

[0040] like Figure 1-Figure 3 As shown, a mounting seat 12 is provided above the floating platform 1, and the interior of the mounting seat 12 is a hollow structure. The bottom of the mounting seat 12 is welded and fixed to the center of the upper bracket 3, and an integrally formed mounting column 121 is provided on the top of the mounting seat 12 for installing and fixing the wind turbine set 9.

[0041] Connecting rings 23 are installed on the outer wall and bottom of the fixed buoy 21. An anchor seat 25 is provided below the fixed buoy 21 and on the outside of the fixed buoy 21. Two anchor cables 24 are fixedly connected to the top of the anchor seat 25. The ends of the two anchor cables 24 are respectively fixedly connected to the connecting rings 23 on the outer wall and bottom of the fixed buoy 21. The fixed buoy 21 is completely suspended in the sea water by the anchor cables 24. During the fixing process, the fixed buoy 21, the anchor seat 25 and the two anchor cables 24 form an outwardly extending oblique triangle. The fixed buoy 21 can be pulled at multiple angles by the two anchor cables 24, thereby improving the stability of the fixed buoy 21.

[0042] like Figure 4As shown, a fixed block 31 is welded and fixed to the end of the upper bracket 3, a connecting rod 22 fixedly connected to the fixed block 31 is provided on the top of the fixed buoy 21, a boat-shaped floating block 311 is installed on the bottom of the fixed block 31, and an arc guide rod 32 is fixedly connected between adjacent fixed blocks 31. A wave-breaking plate 33 with an arc-shaped cross-section is provided on the outer side of the arc guide rod 32, which has a good wind and wave resistance effect, and the two ends of the wave-breaking plate 33 are respectively fixedly connected to the fixed blocks 31 on both sides.

[0043] The bottom of the fixed block 31 can be supported by the boat-shaped floating block 311. Under the buoyancy of the boat-shaped floating block 311, the upper bracket 3 and the arc guide rod 32 are located above the water surface to prevent the guide rail 4 from being subjected to resistance from seawater during the adjustment process, thereby facilitating the adjustment and control of the guide rail 4. In addition, the wave-breaking plate 33 can be used to protect the outer edge of the arc guide rod 32 to reduce the scouring effect of waves on the upper bracket 3, the guide rail 4 and the slide seat 5.

[0044] like Figure 4-Figure 8 As shown, a rotating seat 41 is arranged at one end of the guide rail 4 and is rotatably connected to the floating platform 1. A connecting seat 42 is arranged at the other end of the guide rail 4 and is slidably connected to the arc guide rod 32. Three groups of evenly distributed mounting rods 14 are arranged on the top of the floating platform 1 and between adjacent upper brackets 3. A movable hole 411 is opened at the bottom center of the rotating seat 41. The rotating seat 41 is rotatably connected to the mounting rod 14 through the movable hole 411. Three groups of first motors 43 are installed on the inner side of the mounting seat 12 in a circular array and are coaxially driven with the three groups of rotating seats 41 respectively, so as to drive the rotating seat 41 to rotate on the mounting rod 14. A ball 421 is embedded on the connecting seat 42 and located on the outer side of the arc guide rod 32.

[0045] When the first motor 43 is running, it can drive the rotating seat 41 to rotate on the mounting rod 14, so as to adjust the guide rail 4 within the rotation range of 0°-120°. During the rotation process, the connecting seat 42 on the other side of the guide rail 4 slides along the arc guide rod 32, which can improve the stability of the guide rail 4. At the same time, the setting of the ball 421 can reduce the friction resistance between the connecting seat 42 and the arc guide rod 32, and reduce the wear of the connecting seat 42. Through the cooperation of the mounting rod 14, the rotating seat 41 and the first motor 43, the three groups of guide rails 4 can be independently controlled, so that the position of the movable buoy 6 can be adjusted according to different wind directions and wind speeds.

[0046] The cross-section of the guide rail 4 is I-shaped, and movable grooves 45 are provided on both sides of the guide rail 4. The slide 5 is slidably set on the guide rail 4, and a protective shell 51 is installed on the top of the slide 5. Two groups of driving wheels 52 are symmetrically arranged inside the slide 5, and the surfaces of the driving wheels 52 are in contact with the movable grooves 45. The two groups of driving wheels 52 are rotatably connected to the slide 5 through a rotating shaft, and a gear 53 is installed on the rotating shaft of the driving wheel 52 and inside the protective shell 51. The two groups of gears 53 are meshed for transmission, and a second motor 531 with coaxial transmission is installed on the top of the protective shell 51 and above the driving wheel 52 on one side.

[0047] When the second motor 531 runs to drive the driving wheel 52 on one side to rotate, the two sets of gears 53 are engaged and transmitted, which can drive the two sets of driving wheels 52 to roll along the surface of the movable groove 45 at the same time, and drive the slide 5 to slide along the guide rail 4, so as to adjust the position of the movable buoy 6.

[0048] like Fig.10 and Fig.11 As shown, the first locking mechanism includes a limit seat 44 and a locking seat 7. The limit seat 44 is arranged at the bottom end of the rotating seat 41 and is integrally formed with the rotating seat 41. A plurality of evenly distributed tooth grooves 441 are arranged at the top of the limit seat 44 and on the side away from the guide rail 4. The locking seat 7 is arranged at the lower center of the upper bracket 3. A limit column 71 is arranged at the bottom of the locking seat 7. A plurality of evenly distributed tooth blocks 72 are arranged on the outer wall of the limit column 71. The tooth blocks 72 are snap-fitted with the tooth grooves 441. A rubber pad 73 is bonded and fixed to the bottom of the locking seat 7 and on the outer side of the limit column 71. A hydraulic cylinder 74 is installed above the upper bracket 3 and on the inner side of the mounting seat 12. The piston rod of the hydraulic cylinder 74 is fixedly connected to the locking seat 7.

[0049] The included angles of adjacent tooth grooves 441 and adjacent tooth blocks 72 are both 0.5°. When the first motor 43 drives the rotating seat 41 to rotate, the minimum single deflection angle of the rotating seat 41 is 1°, that is, the rotation angle of the rotating seat 41 during the adjustment process is an integer, such as 5°, 6°, and 7°, so that each time the rotating seat 41 drives the limiting seat 44 to rotate, the deflection angle of the tooth groove 441 is also an integer, and the deflected tooth groove 441 can be accurately engaged with the tooth block 72.

[0050] When the guide rail 4 is rotated and adjusted, the hydraulic cylinder 74 is operated to drive the locking seat 7 to move upward, so that the tooth block 72 is separated from the tooth groove 441. At this time, the first motor 43 is operated to drive the rotating seat 41 to rotate, and drive the limiting seat 44 to rotate a certain angle. After the adjustment, the hydraulic cylinder 74 is operated to drive the locking seat 7 to move downward, so that the tooth block 72 is engaged with the tooth groove 441 on the limiting seat 44. At the same time, the rubber pad 73 is in close contact with the upper surface of the limiting seat 44, so that the rotating seat 41 can be locked and fixed to prevent the guide rail 4 from rotating.

[0051] like Fig. 9 As shown, the second locking mechanism includes a bidirectional screw 54, which is arranged on the inner side of the slide 5 and close to the edge. The end of the bidirectional screw 54 is rotatably connected to the slide 5. The bidirectional screw 54 is provided with symmetrically distributed clamping blocks 55. One end of the clamping block 55 is slidably connected to the slide 5, and the other end of the clamping block 55 extends to the inner side of the movable groove 45. A third motor 56 is installed on the top of the slide 5 and close to the second motor 531. The third motor 56 and the bidirectional screw 54 are coaxially driven.

[0052] During the process of adjusting the position of the slide 5, there is no contact between the clamping block 55 and the inner wall of the movable groove 45. After the slide 5 is adjusted, the third motor 56 is turned on to drive the bidirectional screw 54 to rotate, so that the threaded ends on both sides of the bidirectional screw 54 move relative to the clamping block 55, driving the two groups of clamping blocks 55 to approach the upper and lower sides of the movable groove 45 respectively, so that the upper clamping block 55 is in close contact with the inner top wall of the movable groove 45, and the lower clamping block 55 is in close contact with the inner bottom wall of the movable groove 45, thereby limiting and fixing the slide 5 and preventing the slide 5 from sliding on the guide rail 4.

[0053] like Fig.12 As shown, a counterweight 61 is welded and fixed to the bottom of the movable buoy 6 to prevent the movable buoy 6 from completely floating on the sea surface, thereby improving the stability of the movable buoy 6. A fixing rod 611 is provided on the top of the counterweight 61 and passes through the movable buoy 6. The top of the fixing rod 611 is fixedly connected to the slide 5. A pumping pipe 62 extending to the bottom end of the counterweight 61 is provided on the outside of the movable buoy 6. The top of the pumping pipe 62 passes through the movable buoy 6 and extends to the inside of the movable buoy 6. A pump body 63 is installed at the end of the pumping pipe 62 and inside the movable buoy 6. A control valve 64 is installed on the pumping pipe 62 and close to the pump body 63.

[0054] When the pump body 63 is running, seawater can be pumped into the movable buoy 6 through the pumping pipe 62. When the pump body 63 is closed and the control valve 64 is in the open state, the seawater inside the movable buoy 6 can be discharged. The pump body 63, the pumping pipe 62 and the control valve 64 cooperate with each other to control the amount of water in the movable buoy 6, thereby regulating the buoyancy of the movable buoy 6, so that the movable buoy 6 and the counterweight 61 are submerged in the seawater. At the same time, the lower edge of the wave-breaking plate 33 is in contact with the seawater, which facilitates the wave-breaking plate 33 to prevent scouring caused by seawater.

[0055] Working principle: When in use, first, the pump body 63, the water pumping pipe 62 and the control valve 64 cooperate with each other to control the water volume in the movable buoy 6, so that the lower edge of the wave-breaking plate 33 contacts the seawater. Then, the connecting ring 23, the anchor cable 24 and the anchor seat 25 cooperate with each other to pull and fix the fixed buoy 21, so that the fixed buoy 21 cooperates with the floating platform 1 to form a floating foundation.

[0056] When the wind turbine 9 is subjected to a large wind tilting moment on the windward side and needs to adjust the support point, the first motor 43 is operated to drive the rotating seat 41 to rotate on the mounting rod 14, so that the rotating seat 41 adjusts the guide rail 4 to a suitable angle. Since the three groups of steering structures are independently controlled, the three guide rails 4 can be adjusted to different angles respectively. After that, the hydraulic cylinder 74 is operated to drive the locking seat 7 to move downward, so that the tooth block 72 is engaged with the tooth groove 441 on the limit seat 44. At the same time, the rubber pad 73 is in close contact with the upper surface of the limit seat 44, so that the three groups of rotating seats 41 are locked and fixed at the same time to prevent the guide rail 4 from rotating.

[0057] Furthermore, the second motor 531 is operated to drive the driving wheel 52 on one side to rotate, and the two sets of gears 53 are meshed and transmitted to drive the two sets of driving wheels 52 to roll along the surface of the movable groove 45 at the same time, and drive the slide 5 to slide along the guide rail 4, so as to adjust the position of the movable buoy 6. After that, the third motor 56 is operated to drive the bidirectional screw 54 to rotate, so that the two sets of clamps 55 are respectively close to the upper and lower sides of the movable groove 45 and are in close contact with the movable groove 45, so as to lock and fix the slide 5, and fix the movable buoy 6 in a suitable position, thereby improving the stability of the floating foundation.

[0058] Embodiment 2: This embodiment is an improvement based on Embodiment 1:

[0059] like Figure 1 , Figure 2 and Fig.13 As shown, in order to facilitate the regulation of the center of gravity of the floating foundation and further enhance the stability of the floating foundation, a balancing mechanism is provided below the column 11 , and the balancing mechanism includes a vertical rod 8 , a balancing sleeve 82 and a steel wire rope 83 .

[0060] The vertical rod 8 is arranged below the column 11, and a pendant block 81 is fixedly connected to the bottom of the vertical rod 8. A balancing sleeve 82 is provided on the outer side of the vertical rod 8 and is sleeved on the upper side of the pendant block 81. The vertical rod 8 is slidably connected to the balancing sleeve 82, and three groups of zippers 821 distributed in a circular array are fixedly connected to the outer side of the balancing sleeve 82. The other end of the zipper 821 is fixedly connected to the connecting ring 23 at the bottom of the fixed buoy 21. The balancing sleeve 82 and the zipper 821 cooperate with each other to position the vertical rod 8, so that the vertical rod 8 can drive the pendant block 81 to move up and down, thereby facilitating the adjustment of the center of gravity of the floating foundation through the pendant block 81.

[0061] A positioning sleeve 13 is provided at the bottom center of the column 11, and a wire rope 83 is arranged on the top of the vertical rod 8. After passing through the positioning sleeve 13, it extends to the inside of the mounting seat 12. An electric hoist 84 for winding up the wire rope 83 is installed inside the mounting seat 12. When the electric hoist 84 is running, the wire rope 83 can be wound up, so that the wire rope 83 drives the vertical rod 8 to move up and down along the balancing sleeve 82, and the position of the vertical block 81 is controlled, thereby adjusting the center of gravity of the floating foundation.

[0062] In this solution, the center of gravity position of the floating foundation can be further controlled by the balancing mechanism. When the wind speed is too high and the wind turbine 9 is subjected to a large wind tilting moment on the windward side, the electric hoist 84 is operated, and the wire rope 83 drives the vertical rod 8 to move downward, so that the vertical rod 8 slides vertically downward on the inner side of the balancing sleeve 82, and drives the vertical block 81 to move downward, thereby controlling the center of gravity of the floating foundation to move downward, further improving the stability of the floating foundation in a strong wind environment, and avoiding excessive inclination angle of the overall wind power equipment.

[0063] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An offshore wind power plant with a floating foundation, characterized in that: include: A floating platform (1) and a wind turbine generator set (9), wherein a column (11) is welded and fixed to the bottom of the floating platform (1), a lower bracket (2) distributed in an equilateral triangle is welded and fixed to the column (11) near the bottom, and fixed buoys (21) are arranged at the three vertices of the lower bracket (2), three groups of upper brackets (3) distributed in a ring array are welded and fixed to the top of the floating platform (1), three groups of guide rails (4) distributed at intervals are arranged between adjacent upper brackets (3), each of the guide rails (4) is slidably connected to a slide seat (5), a movable buoy (6) is installed at the bottom of the slide seat (5), a wind speed and direction sensor (57) is installed at the top of one of the slide seats (5), a steering mechanism for controlling the rotation of the guide rail (4) is provided on the guide rail (4) and near the floating platform (1), and the steering mechanism comprises a rotating seat (41), a connecting seat (42) and a first motor (43), and a first motor (43) is installed on the upper bracket (3) and near the middle. A first locking mechanism is provided at the center of the upper bracket (3), the first locking mechanism comprising a limit seat (44) and a locking seat (7) for fixing the guide rail (4), the limit seat (44) being arranged at the bottom end of the rotating seat (41) and being integrally formed with the rotating seat (41), the locking seat (7) being arranged at the center below the upper bracket (3), a hydraulic cylinder (74) being installed above the upper bracket (3) and on the inner side of the mounting seat (12), the piston rod of the hydraulic cylinder (74) being fixedly connected to the locking seat (7), a driving mechanism for driving the slide seat (5) to move along the guide rail (4) being provided on the inner side of the slide seat (5), the driving mechanism comprising a driving wheel (52) and a gear (53), a second locking mechanism being provided on the inner side of the slide seat (5) and close to the driving mechanism, the second locking mechanism comprising a bidirectional screw rod (54) and clamping blocks (55) symmetrically distributed on the bidirectional screw rod (54) for fixing the slide seat (5); A plurality of evenly distributed tooth grooves (441) are provided at the top of the limiting seat (44) and on a side away from the guide rail (4); a limiting column (71) is provided at the bottom of the locking seat (7); a plurality of evenly distributed tooth blocks (72) are provided on the outer wall of the limiting column (71); the tooth blocks (72) are snap-fitted with the tooth grooves (441); a rubber pad (73) is bonded and fixed at the bottom of the locking seat (7) and on the outer side of the limiting column (71); A mounting seat (12) is provided above the floating platform (1), and the interior of the mounting seat (12) is a hollow structure. The bottom of the mounting seat (12) is welded and fixed to the center of the upper bracket (3). An integrally formed mounting column (121) is provided on the top of the mounting seat (12) for mounting and fixing the wind turbine set (9). A positioning sleeve (13) is provided at the center of the bottom of the column (11).

2. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: A connecting ring (23) is installed on the outer wall and bottom of the fixed buoy (21), and an anchor seat (25) is provided below the fixed buoy (21) and on the outside of the fixed buoy (21). Two anchor cables (24) are fixedly connected to the top of the anchor seat (25), and the ends of the two anchor cables (24) are respectively fixedly connected to the connecting rings (23) on the outer wall and bottom of the fixed buoy (21).

3. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: A fixing block (31) is welded and fixed to the end of the upper bracket (3), a connecting rod (22) fixedly connected to the fixing block (31) is provided at the top of the fixing buoy (21), a boat-shaped floating block (311) is installed at the bottom of the fixing block (31), arc guide rods (32) are fixedly connected between adjacent fixing blocks (31), a wave-breaking plate (33) with an arc-shaped cross section is provided on the outside of the arc guide rod (32), and two ends of the wave-breaking plate (33) are respectively fixedly connected to the fixing blocks (31) on both sides.

4. The offshore wind power equipment with a floating foundation according to claim 3, characterized in that: The rotating seat (41) is arranged at one end of the guide rail (4) and is rotatably connected to the floating platform (1). The connecting seat (42) is arranged at the other end of the guide rail (4) and is slidably connected to the circular arc guide rod (32). Three groups of evenly distributed mounting rods (14) are arranged on the top of the floating platform (1) and located between adjacent upper brackets (3). A movable hole (411) is opened at the center of the bottom of the rotating seat (41). The rotating seat (41) is rotatably connected to the mounting rod (14) through the movable hole (411). Three groups of the first motors (43) are installed on the inner side of the mounting seat (12) in a circular array and are respectively coaxially driven with the three groups of rotating seats (41) to drive the rotating seat (41) to rotate on the mounting rod (14). Ball bearings (421) are embedded on the connecting seat (42) and located on the outer side of the circular arc guide rod (32).

5. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: The guide rail (4) has an I-shaped cross section. Both sides of the guide rail (4) are provided with movable grooves (45). The slide seat (5) is slidably arranged on the guide rail (4). A protective shell (51) is installed on the top of the slide seat (5). Two groups of driving wheels (52) are symmetrically arranged inside the slide seat (5), and the surfaces of the driving wheels (52) are in contact with the movable grooves (45). The two groups of driving wheels (52) are rotatably connected to the slide seat (5) via a rotating shaft. A gear (53) is installed on the rotating shaft of the driving wheel (52) and inside the protective shell (51). The two groups of gears (53) are meshed for transmission. A second motor (531) with coaxial transmission is installed on the top of the protective shell (51) and above the driving wheel (52) on one side.

6. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: The bidirectional screw (54) is arranged on the inner side of the slide (5) and close to the edge. The end of the bidirectional screw (54) is rotatably connected to the slide (5). The bidirectional screw (54) is provided with symmetrically distributed clamping blocks (55). One end of the clamping block (55) is slidably connected to the slide (5), and the other end of the clamping block (55) extends to the inner side of the movable groove (45). A third motor (56) is installed on the top of the slide (5) and close to the second motor (531). The third motor (56) and the bidirectional screw (54) are coaxially driven.

7. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: A counterweight (61) is welded and fixed to the bottom of the movable buoy (6), a fixing rod (611) penetrating the movable buoy (6) is provided at the top of the counterweight (61), the top of the fixing rod (611) is fixedly connected to the slide seat (5), a water pumping pipe (62) extending to the bottom end of the counterweight (61) is provided on the outside of the movable buoy (6), the top end of the water pumping pipe (62) penetrates the movable buoy (6) and extends to the inside of the movable buoy (6), a pump body (63) is installed at the end of the water pumping pipe (62) and located inside the movable buoy (6), and a control valve (64) is installed on the water pumping pipe (62) and close to the pump body (63).

8. The offshore wind power equipment with a floating foundation according to claim 1, characterized in that: A balancing mechanism is provided below the column (11), the balancing mechanism comprising a vertical rod (8), a balancing sleeve (82) and a steel wire rope (83); the vertical rod (8) is provided below the column (11); a hanging block (81) is fixedly connected to the bottom of the vertical rod (8); a balancing sleeve (82) is provided on the outside of the vertical rod (8) and is sleeved above the hanging block (81); the vertical rod (8) is slidably connected to the balancing sleeve (82); three groups of zippers (821) distributed in an annular array are fixedly connected to the outside of the balancing sleeve (82); the other end of the zipper (821) is fixedly connected to a connecting ring (23) at the bottom of the fixed buoy (21); the steel wire rope (83) is provided at the top of the vertical rod (8), passes through the positioning sleeve (13) and then extends to the inside of the mounting seat (12); an electric hoist (84) for winding up the steel wire rope (83) is installed inside the mounting seat (12).

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