An offshore wind power equipment with a pile foundation that can be chained to improve stability

Abstract

The present invention belongs to the technical field of offshore wind power equipment, in particular to an offshore wind power equipment with a pile foundation that can be chained to improve stability, including a first tower barrel. A base is fixed at the bottom of the first tower barrel, and a second tower barrel is fixed at the top of the first tower barrel. A wind turbine nacelle is installed at the top of the second tower barrel. A first column groove and a second column groove are respectively formed at the position where the first tower barrel and the second tower barrel are connected. A central column is inserted into the first column groove. No less than two sliding rods are fixed on the circumferential outer wall of the central column. A sliding opening is formed on the circumferential outer wall of the first tower barrel. A plurality of shaft rods are arranged on the second tower barrel. Blades are fixed at the outer ends of the shaft rods. A reel is fixedly sleeved on the shaft rods, and a steel wire rope is fixed on the outer wall of the reel. In the present invention, when encountering strong winds, the wind force drives the blades, shaft rods and reel to rotate. The reel will wind up the steel wire rope, and then the steel wire rope will lift the central column upward, thereby strengthening the strength of the connection part between the first tower barrel and the second tower barrel.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power equipment, and particularly to an offshore wind power equipment with a pile foundation that can be chained to improve stability. Background Art

[0002] The support technologies for offshore wind turbines mainly include bottom-fixed support and floating support. The bottom-fixed support has three methods: gravity caisson foundation, monopile foundation, and tripod foundation. The floating support has two methods: floating barrel type and semi-submerged type. The foundation of an offshore wind turbine is the platform on which the wind turbine unit can continuously and stably operate, and is an important part of an offshore wind farm. To reduce the influence of sea breeze, sea waves, tidal current, tide, etc. on the offshore wind power generator, it is usually installed and fixed on a support device.

[0003] The height of an offshore wind turbine is generally very high, and the tower barrel of the wind turbine is thicker at the top and thinner at the bottom. When affected by wind force, the middle part of the tower barrel is subjected to a large acting force. Therefore, higher requirements are needed for the strength of this part, and corresponding improvements are made for this problem. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes an offshore wind power equipment with a pile foundation that can be chained to improve stability.

[0005] An offshore wind power equipment with a pile foundation that can be chained to improve stability proposed by the present invention includes a first tower barrel. A base is fixed at the bottom of the first tower barrel, a second tower barrel is fixed at the top of the first tower barrel, a wind turbine nacelle is installed at the top of the second tower barrel. First column grooves and second column grooves are respectively opened at the positions where the first tower barrel and the second tower barrel are connected. A central column is inserted into the first column groove. No less than two sliding rods are fixed on the circumferential outer wall of the central column. A sliding opening for the corresponding sliding rod to pass through is opened on the circumferential outer wall of the first tower barrel. A plurality of rotatable shaft rods are provided on the second tower barrel. Blades are fixed at the outer ends of the shaft rods. A reel is fixedly sleeved on the shaft rod. A steel wire rope is fixed on the outer wall of the reel. The other end of the steel wire rope is fixed on the sliding rod. When encountering strong wind, the wind force drives the blades to rotate, and the blades will synchronously drive the shaft rod and the reel to rotate. The reel will wind up the steel wire rope. Then the steel wire rope will lift the central column upward through the sliding rod, so that the central column enters the second column groove from the first column groove, thereby strengthening the strength of the connection part between the first tower barrel and the second tower barrel, effectively avoiding instability due to excessive force at the connection between the first tower barrel and the second tower barrel, and under normal circumstances, the central column is located inside the first tower barrel, reducing the center of gravity of the wind power equipment and making it more stable.

[0006] Preferably, a positioning groove is opened on the inner wall of the bottom of the base, and a shock pad is fixed in the positioning groove. When the central column falls, it can be protected by the shock pad, thereby reducing collision and noise.

[0007] Preferably, an arc-shaped plate is fixedly penetrated on the sliding rod, and a plurality of reinforcing rods distributed in a circular array are fixed on the top of the arc-shaped plate. Connecting flanges are provided at the positions where the first tower barrel and the second tower barrel are connected. A plurality of round holes for the reinforcing rods to pass through are formed in both of the two connecting flanges. When the sliding rod moves, the arc-shaped plate and the plurality of reinforcing rods are synchronously driven to move upward, and then the reinforcing rods are inserted into the corresponding round holes, so as to further strengthen the stability of the connection between the first tower barrel and the second tower barrel.

[0008] Preferably, a ring groove is formed at the top end of the second tower barrel, and a collar is rotatably connected to the ring groove. The shaft rod is rotatably connected to the circumferential outer wall of the collar, and the plurality of blades have the same rotation direction. In this way, no matter from which direction the strong wind blows, under the action of the wind force, the plurality of blades will rotate together with the collar until a stable state is reached. At this time, the conversion rate of the wind force by the blades can reach the maximum, so as to normally lift the central column upward.

[0009] Preferably, a plurality of fixing frames distributed in a circular array are fixed on the circumferential outer wall of the second tower barrel, and the steel wire ropes pass through the corresponding fixing frames. When the plurality of blades rotate together with the collar, the steel wire ropes above the fixing frames will twist around the second tower barrel, and in this way, the central column will also be pulled upward through the steel wire ropes, so that the central column can move upward quickly.

[0010] Preferably, a plurality of slide rails are arranged around the base, sliders are slidably connected in the slide rails, the top ends of the sliders are rotatably connected with support connecting rods, the other ends of the support connecting rods are rotatably connected with the sliding rod, and a stop component is arranged in the slide rails. When the central column moves upward, the slider will be pulled along the slide rail in the direction close to the base through the support connecting rod. When the equipment accidentally tilts, since the stop component blocks the outward movement of the slider, the first tower barrel can be supported through the support connecting rod, thereby improving its stability.

[0011] Preferably, the stop component includes a plurality of stop blocks. Uniformly distributed grooves are formed in the inner wall of the bottom of the slide rail, springs are fixed on the bottom walls of the grooves, the stop blocks are fixed at the top ends of the springs, and a push block capable of abutting against the inclined surface on the stop block is fixed at the bottom of the slider. When the slider moves inward, the push block presses the inclined surface to press the stop block downward into the groove, so that the stop block will avoid the movement of the slider. When the slider moves outward, the stop block will block the push block.

[0012] Preferably, a pressing plate is arranged in the sliding rail and rests on the tops of a plurality of stopping blocks. An opening is formed on one side of the sliding rail. A foot pedal fixed to the pressing plate passes through the opening. A limiting rod is fixed to the bottom of the foot pedal. A fixing seat for the limiting rod to pass through is fixed to the side of the sliding rail. When it is necessary to reset the slider, just press down the pressing plate along the opening through the foot pedal, and the pressing plate will press all the stopping blocks into the grooves. At this time, the slider can be pushed back.

[0013] Compared with the prior art, the present invention provides an offshore wind power device with a pile foundation that can be chain - combined to improve stability, and has the following beneficial effects:

[0014] 1. For an offshore wind power device with a pile foundation that can be chain - combined to improve stability, by arranging a central column, when encountering strong wind, the wind force drives the blades to rotate, and the blades will synchronously drive the shaft rod and the reel to rotate. The reel will wind up the steel wire rope, and then the steel wire rope will lift the central column upward through the sliding rod, so that the central column enters the second column groove from the first column groove, thereby strengthening the strength of the connection part between the first tower barrel and the second tower barrel, effectively avoiding the instability of the connection part between the first tower barrel and the second tower barrel due to excessive force, and under normal circumstances, the central column is located in the first tower barrel, reducing the center of gravity of the wind power device and making it more stable.

[0015] 2. For an offshore wind power device with a pile foundation that can be chain - combined to improve stability, by arranging a reinforcing rod, when the sliding rod moves, it synchronously drives the arc - shaped plate and a plurality of reinforcing rods to move upward, and then the reinforcing rods are inserted into the corresponding round holes, thereby further strengthening the stability of the connection part between the first tower barrel and the second tower barrel.

[0016] 3. For an offshore wind power device with a pile foundation that can be chain - combined to improve stability, by arranging a collar, no matter from which direction the strong wind blows, under the action of the wind force, a plurality of blades will rotate together with the collar until a stable state is reached. At this time, the conversion rate of the wind force by the blades can reach the maximum, so as to normally lift the central column upward. When a plurality of blades rotate together with the collar, the steel wire rope above the fixed frame will twist around the second tower barrel, and this will also pull the central column upward through the steel wire rope, so that the central column can move upward quickly.

[0017] 4. For an offshore wind power device with a pile foundation that can be chain - combined to improve stability, by arranging a support connecting rod, when the central column moves upward, it will pull the slider along the sliding rail in the direction close to the base through the support connecting rod. When the device accidentally tilts, due to the stopping component blocking the outward movement of the slider, the first tower barrel can be supported by the support connecting rod, improving its stability.

[0018] 5. An offshore wind power equipment with a pile foundation that can be chain - combined to improve stability. By setting a stop component, when the slider moves inward, the push block squeezes the inclined plane and presses the stop block downward into the groove. In this way, the stop block will avoid the movement of the slider. When the slider moves outward, the stop block will block the push block. When it is necessary to reset the slider, just press the pressure plate downward along the opening through the foot pedal, and the pressure plate will press all the stop blocks into the groove. At this time, the slider can be pushed back. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0021] Figure 3 It is a schematic diagram of the sectional structure of the first tower barrel and the second tower barrel of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0022] Figure 4 For the present invention Figure 2 The enlarged structure schematic diagram at A;

[0023] Figure 5 It is a schematic diagram of the shaft rod and collar structure of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0024] Figure 6 For the present invention Figure 3 The enlarged structure schematic diagram at B;

[0025] Figure 7 It is a schematic diagram of the sectional structure of the slide rail of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0026] Figure 8 For the present invention Figure 7 The enlarged structure schematic diagram at C;

[0027] Figure 9 It is a schematic diagram of the installation structure of the pressure plate of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention;

[0028] Figure 10 It is a schematic diagram of the back structure of the slide rail of an offshore wind power equipment with a pile foundation that can be chain - combined to improve stability proposed by the present invention.

[0029] In the figure: 1. First tower barrel; 2. Base; 3. Second tower barrel; 4. Wind turbine nacelle; 5. First column groove; 6. Second column groove; 7. Central column; 8. Slide bar; 9. Shaft bar; 10. Blade; 11. Drum; 12. Steel wire rope; 13. Positioning groove; 14. Shock pad; 15. Arc plate; 16. Reinforcing bar; 17. Slide opening; 18. Connecting flange; 19. Round hole; 20. Ring groove; 21. Collar; 22. Fixed frame; 23. Slide rail; 24. Support connecting rod; 25. Slide block; 26. Groove; 27. Spring; 28. Stopping block; 29. Pushing block; 30. Pressing plate; 31. Opening; 32. Foot pedal; 33. Fixed seat; 34. Limiting rod. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] Refer to Figure 1-10, An offshore wind power equipment with a pile foundation that can be linked to improve stability, including a first tower barrel 1. A base 2 is fixed at the bottom of the first tower barrel 1, and a second tower barrel 3 is fixed at the top of the first tower barrel 1. A wind turbine nacelle 4 is installed at the top of the second tower barrel 3. First column grooves 5 and second column grooves 6 are respectively opened at the positions where the first tower barrel 1 and the second tower barrel 3 are connected. A central column 7 is inserted into the first column groove 5. Not less than two sliding rods 8 are fixed on the circumferential outer wall of the central column 7. A sliding opening 17 for the corresponding sliding rod 8 to pass through is opened on the circumferential outer wall of the first tower barrel 1. A plurality of rotatable shaft rods 9 are arranged on the second tower barrel 3. A blade 10 is fixed at the outer end of the shaft rod 9. A winding drum 11 is fixedly sleeved on the shaft rod 9. A steel wire rope 12 is fixed on the outer wall of the winding drum 11. The other end of the steel wire rope 12 is fixed on the sliding rod 8. When encountering strong wind, the wind force drives the blade 10 to rotate. The blade 10 will synchronously drive the shaft rod 9 and the winding drum 11 to rotate. The winding drum 11 will wind up the steel wire rope 12. Then the steel wire rope 12 will lift the central column 7 upward through the sliding rod 8, so that the central column 7 enters the second column groove 6 from the first column groove 5, thereby strengthening the strength of the connection part between the first tower barrel 1 and the second tower barrel 3, effectively avoiding the instability of the connection between the first tower barrel 1 and the second tower barrel 3 due to excessive force, and under normal circumstances, the central column 7 is located inside the first tower barrel 1, reducing the center of gravity of the wind power equipment and making it more stable.

[0033] Further, a positioning groove 13 is opened on the inner wall of the bottom of the base 2, and a shock pad 14 is fixed in the positioning groove 13. When the central column 7 falls, it can be protected by the shock pad 14, thereby reducing collision and noise.

[0034] Further, an arc-shaped plate 15 is fixedly penetrated on the sliding rod 8. A plurality of strengthening rods 16 distributed in a circular array are fixed at the top of the arc-shaped plate 15. Connection flanges 18 are provided at the positions where the first tower barrel 1 and the second tower barrel 3 are connected. A plurality of round holes 19 for the strengthening rods 16 to pass through are opened on both connection flanges 18. When the sliding rod 8 moves, it synchronously drives the arc-shaped plate 15 and the plurality of strengthening rods 16 to move upward. Then the strengthening rods 16 are inserted into the corresponding round holes 19, thereby further strengthening the stability of the connection between the first tower barrel 1 and the second tower barrel 3.

[0035] Further, a ring groove 20 is opened at the top end position of the second tower barrel 3. A collar 21 is rotatably connected at the ring groove 20. The shaft rod 9 is rotatably connected to the circumferential outer wall of the collar 21, and the rotation directions of the plurality of blades 10 are the same. In this way, no matter from what direction the strong wind blows, under the action of the wind force, the plurality of blades 10 will rotate together with the collar 21 until a stable state is reached. At this time, the conversion rate of the wind force by the blades 10 can reach the maximum, so as to normally lift the central column 7 upward.

[0036] Furthermore, a plurality of fixing frames 22 are fixedly arranged on the circumferential outer wall of the second tower barrel 3 and distributed in an annular array. The steel wire ropes 12 pass through the corresponding fixing frames 22. When the plurality of blades 10 rotate together with the collar 21, the steel wire ropes 12 above the fixing frames 22 will twist around the second tower barrel 3, and in this way, the central column 7 will also be pulled upward through the steel wire ropes 12, so that the central column 7 can move upward quickly.

[0037] Furthermore, a plurality of slide rails 23 are arranged around the base 2. A slider 25 is slidably connected in the slide rail 23. The top end of the slider 25 is rotatably connected to a support connecting rod 24, and the other end of the support connecting rod 24 is rotatably connected to the slide rod 8. A stop component is arranged in the slide rail 23. When the central column 7 moves upward, the slider 25 will be pulled along the slide rail 23 towards the direction close to the base 2 through the support connecting rod 24. When the equipment accidentally tilts, since the stop component blocks the outward movement of the slider 25, the first tower barrel 1 can be supported through the support connecting rod 24, thereby improving its stability.

[0038] The stop component includes a plurality of stop blocks 28. The bottom inner wall of the slide rail 23 is provided with uniformly distributed grooves 26. A spring 27 is fixedly arranged on the bottom wall of the groove 26, and the stop block 28 is fixedly arranged at the top end of the spring 27. A push block 29 capable of abutting against the inclined surface on the stop block 28 is fixedly arranged at the bottom of the slider 25. When the slider 25 moves inward, the push block 29 presses the inclined surface to press the stop block 28 downward into the groove 26. In this way, the stop block 28 will avoid the movement of the slider 25, and when the slider 25 moves outward, the stop block 28 will block the push block 29.

[0039] Furthermore, a pressing plate 30 is arranged in the slide rail 23 and rests on the tops of a plurality of stop blocks 28. An opening 31 is arranged on one side of the slide rail 23. A foot pedal 32 passing through the opening 31 is fixedly arranged on the pressing plate 30. A limiting rod 34 is fixedly arranged at the bottom of the foot pedal 32. A fixing seat 33 for the limiting rod 34 to pass through is fixedly arranged on the side of the slide rail 23. When it is necessary to reset the slider 25, only need to press the pressing plate 30 downward along the opening 31 through the foot pedal 32, and the pressing plate 30 will press all the stop blocks 28 into the groove 26. At this time, the slider 25 can be pushed back.

[0040] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An offshore wind power equipment with a pile foundation capable of being linked to improve stability, comprising a first tower (1), characterized in that: A base (2) is fixed at the bottom of the first tower (1), a second tower (3) is fixed at the top of the first tower (1), a wind turbine cabin (4) is installed at the top of the second tower (3), a first column groove (5) and a second column groove (6) are respectively provided at the positions where the first tower (1) and the second tower (3) are connected, a center column (7) is inserted in the first column groove (5), at least two sliding rods (8) are fixed on the circumferential outer wall of the center column (7), a sliding opening (17) for the corresponding sliding rods (8) to pass through is provided on the circumferential outer wall of the first tower (1), a plurality of rotatable shafts (9) are arranged on the second tower (3), blades (10) are fixed to the outer ends of the shafts (9), a drum (11) is fixedly sleeved on the shaft (9), a steel wire rope (12) is fixed to the outer wall of the drum (11), and the other end of the steel wire rope (12) is fixed to the sliding rod (8); An annular groove (20) is provided at the top end of the second tower (3), a collar (21) is rotatably connected to the annular groove (20), the shaft (9) is rotatably connected to the circumferential outer wall of the collar (21), and the rotation directions of the plurality of blades (10) are the same.

2. The pile foundation according to claim 1 can be linked to an offshore wind power equipment with improved stability, characterized in that: A positioning groove (13) is provided on the inner wall of the bottom of the base (2), and a shock-absorbing pad (14) is fixed in the positioning groove (13).

3. The offshore wind power equipment with pile foundation that can be linked to improve stability according to claim 1, characterized in that: An arc plate (15) is fixedly passed through the sliding rod (8), and a plurality of reinforcing rods (16) distributed in a circular array are fixedly disposed on the top of the arc plate (15). A connecting flange (18) is provided at the position where the first tower tube (1) and the second tower tube (3) are connected, and a plurality of circular holes (19) for the reinforcing rods (16) to pass through are provided on the two connecting flanges (18).

4. The offshore wind power equipment with pile foundation capable of being linked to improve stability according to claim 1, characterized in that: A plurality of fixing frames (22) distributed in a circular array are fixed to the circumferential outer wall of the second tower (3), and the steel wire rope (12) passes through the corresponding fixing frames (22).

5. The offshore wind power equipment with pile foundation capable of being linked to improve stability according to claim 1, characterized in that: A plurality of slide rails (23) are arranged around the base (2), a slider (25) is slidably connected inside the slide rail (23), a top end of the slider (25) is rotatably connected to a support connecting rod (24), the other end of the support connecting rod (24) is rotatably connected to the slide rod (8), and a stop assembly is arranged inside the slide rail (23).

6. The offshore wind power equipment with pile foundation capable of being linked to improve stability according to claim 5, characterized in that: The stop assembly comprises a plurality of stop blocks (28); the inner wall at the bottom of the slide rail (23) is provided with evenly distributed grooves (26); a spring (27) is fixed to the bottom wall of the groove (26); the stop block (28) is fixed to the top of the spring (27); and a push block (29) capable of resisting the inclined surface on the stop block (28) is fixed to the bottom of the slide block (25).

7. The pile foundation according to claim 6 can be linked to an offshore wind power equipment with improved stability, characterized in that: A pressure plate (30) is arranged inside the slide rail (23) and is placed on top of a plurality of stop blocks (28). An opening (31) is provided on one side of the slide rail (23). A foot pedal (32) passing through the opening (31) is fixed on the pressure plate (30). A limiting rod (34) is fixed at the bottom of the foot pedal (32). A fixing seat (33) for the limiting rod (34) to pass through is fixed on the side of the slide rail (23).

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