Floating supporting structure of offshore wind turbine generator

Abstract

The utility model discloses a floating supporting structure of an offshore wind turbine generator, which belongs to the technical field of offshore wind power development equipment and comprises a floating base, mooring mechanisms are fixedly connected to four corners of the bottom of the floating base, a bottom shell is fixedly connected to the upper side wall of the floating base, an opening is formed in the upper side wall of the bottom shell, and the bottom shell is fixedly connected with the mooring mechanisms. A cover shell is inserted into the opening and slidably connected with the opening, a plurality of anti-seismic mechanisms are fixedly connected between the inner bottom wall of the bottom shell and the inner top wall of the cover shell, and a supporting column is movably connected to the center of the upper side wall of the cover shell. According to the utility model, by arranging the anti-seismic mechanism and the damping mechanism, the anti-seismic effect can be guaranteed, the anti-seismic protectiveness of the wind turbine generator body is improved, and the sea wave impact resistance of the wind turbine generator body is further improved, and by arranging the buffer supporting mechanism, the shaking impact force borne by the wind turbine generator body can be buffered, and the impact resistance firmness of the supporting column support is further improved; and therefore, the protectiveness of the wind turbine generator body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power development equipment, in particular to a floating support structure for an offshore wind turbine generator set. Background Art

[0002] With the increasing saturation of wind power resources in the intertidal zone and offshore areas, it is an inevitable trend for offshore wind power development to move from offshore to deep sea. The research and development and design of floating offshore wind turbine structures are imperative. The floating offshore wind turbine structure is a complex engineering equipment with multiple systems combined. It consists of multiple subsystems, mainly including the upper wind turbine, the middle tower, the lower floating foundation and the mooring system. Among them, the floating foundation is the reliance of the entire wind turbine for stable power generation. The design of the floating foundation is the top priority in the design of the entire device.

[0003] A Chinese patent for a truss-stayed floating offshore wind turbine structure (patent publication number: CN214092145U) describes a structure comprising a ballast tank and a mooring system fixedly connected to the tank's edge. Multiple truss structures are spaced above the ballast tank. A mounting platform is fixedly connected to each truss structure at a certain elevation via a number of diagonal braces. The upper surface of the mounting platform is fixedly connected to the bottom of the wind turbine tower, and a wind turbine is fixedly connected to the top of the wind turbine tower. However, the floating support structure of the offshore wind turbine in this structure is a rigid steel frame. This structure is subject to significant swaying with waves, resulting in insufficient seismic protection and affecting overall stability. Summary of the Invention

[0004] The purpose of the present invention is to provide a floating support structure for an offshore wind turbine generator system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A floating support structure for an offshore wind turbine comprises a floating base, wherein the four bottom corners of the floating base are fixedly connected to a mooring mechanism, the upper side wall of the floating base is fixedly connected to a bottom shell, the upper side wall of the bottom shell is provided with an opening, a cover shell is inserted into the opening and slidably connected, a plurality of anti-seismic mechanisms are fixedly connected between the inner bottom wall of the bottom shell and the inner top wall of the cover shell, a pillar is movably connected at the center of the upper side wall of the cover shell, the top of the pillar is fixedly connected to the wind turbine body, the outer side wall of the pillar is fixedly connected to a fixing ring, and the upper side wall of the cover shell is fixedly connected to four buffer support mechanisms arranged at equal intervals around the pillar as the center, and the upper ends of the four buffer support mechanisms are movably connected to the fixing ring.

[0007] As a further solution of the present invention: wherein, the anti-seismic mechanism includes two concave frames symmetrically fixed on the bottom wall of the bottom shell and the inner top wall of the cover shell, the inner walls of the two concave frames are fixedly connected with a fixing rod, and the two fixing rods are sleeved and slidably connected with two symmetrically arranged sliding blocks, and a first spring is fixedly connected between the inner walls at both ends of the concave frame and the two sliding blocks, and two cross-arranged rocker arms are hingedly connected between the four sliding blocks, and the intersection of the two rocker arms is rotatably connected by a turn pin, and two symmetrically arranged damping mechanisms are fixedly connected between the inner bottom wall of the bottom shell and the inner top wall of the cover shell.

[0008] As a further solution of the present invention: wherein, there are four anti-vibration mechanisms, and the four anti-vibration mechanisms are respectively arranged on four side positions of the cover shell.

[0009] As a further solution of the present invention: wherein, the buffer support mechanism includes a fixed bar shell fixed to the upper side wall of the cover shell, a support rod fixedly connected to the fixed bar shell, a movable sleeve is sleeved and slidably connected to the support rod, a second spring is fixedly connected between the inner walls at both ends of the fixed bar shell and the two ends of the movable sleeve, the upper side wall of the movable sleeve is fixedly connected to a connecting block, the upper side wall of the fixed bar shell is provided with a sliding opening, the upper end of the connecting block passes through the sliding opening and is movably connected to a support arm, and the upper end of the support arm is movably connected to the fixed ring.

[0010] As a further solution of the present invention: wherein, the inner walls on both sides of the sliding opening are slidably connected to the side walls on both sides of the connecting block.

[0011] As a further solution of the present invention: wherein, the damping mechanism includes a hydraulic rod and a third spring vertically fixed to the bottom wall of the bottom shell and the top wall of the cover shell, and the third spring is sleeved on the outside of the hydraulic rod.

[0012] As a further solution of the present invention: wherein, the outer side wall of the bottom of the cover shell is fixedly connected to a guide sliding frame, and the inner wall of the bottom shell is slidably connected to the outer side wall of the guide sliding frame.

[0013] As a further solution of the present invention: wherein, the four side walls of the floating base are fixedly connected with anti-collision rubber tubes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The floating support structure of the offshore wind turbine is provided with an anti-seismic mechanism and a damping mechanism. When the floating base is shaken by the impact of waves, the wind turbine body is driven to shake. At this time, the cover shell is driven to displace in the bottom shell. At this time, the two concave frames are displaced relative to each other, and the two swing arms swing crosswise. At this time, the two sets of sliding blocks are displaced in opposite directions on the two fixed rods. The two sets of first springs are squeezed and contracted to generate elastic force. At the same time, the hydraulic rod and the third spring are also squeezed and contracted to generate elastic force. The combined elastic force of the two produces a damping effect, which can ensure the anti-seismic effect, improve the anti-seismic protection of the wind turbine body, and thus improve its performance in resisting wave impact.

[0016] 2. The floating support structure of the offshore wind turbine is provided with a buffer support mechanism. When the wind turbine body follows the floating base and is shaken by the impact of waves, the pillar is driven to shake. At this time, the support arm is squeezed and swings, pushing the movable sleeve fixed to the connecting block to move on the support rod. At this time, the second spring is squeezed and contracts to generate elastic force. The elastic force can be used to buffer the shaking impact force of the wind turbine body, thereby improving the impact resistance and firmness of the pillar support, and thus improving the protection of the wind turbine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a three-dimensional enlarged structural diagram of the bottom shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the bottom shell and the cover shell of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the fixed strip shell of the present invention.

[0021] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0022] 1. Floating base; 2. Mooring mechanism; 3. Bottom shell; 4. Opening; 5. Cover shell; 6. Pillar; 7. Wind turbine body; 8. Fixing ring; 9. Concave frame; 10. Fixing rod; 11. Sliding sleeve block; 12. First spring; 13. Rocker arm; 14. Fixing bar shell; 15. Support rod; 16. Moving sleeve; 17. Second spring; 18. Connecting block; 19. Sliding mouth; 20. Support arm; 21. Hydraulic rod; 22. Third spring; 23. Mounting plate; 24. Guide slide frame; 25. Anti-collision rubber cylinder. DETAILED DESCRIPTION

[0023] See also Figures 1 to 4In this practical embodiment, a floating support structure for an offshore wind turbine includes a floating base 1, which is a common device. The four corners of the bottom of the floating base 1 are fixedly connected to a mooring mechanism 2. The mooring mechanism 2 can be a combination of a fixed anchor and a mooring cable. The mooring mechanism is a common existing device. The upper side wall of the floating base 1 is fixedly connected to a bottom shell 3. The upper side wall of the bottom shell 3 is provided with an opening 4. A cover shell 5 is inserted into the opening 4 and slidably connected. Several anti-seismic mechanisms are fixedly connected between the inner bottom wall of the bottom shell 3 and the inner top wall of the cover shell 5. Structure, the center of the upper side wall of the cover shell 5 is movably connected with a pillar 6, the top of the pillar 6 is fixedly connected with the wind turbine body 7, and is connected to the power storage equipment of the coastal storage power station through a wire to collect and store electricity. It is a prior art, the outer side wall of the pillar 6 is fixedly connected with a fixing ring 8, and the upper side wall of the cover shell 5 is fixedly connected with four buffer support mechanisms arranged at equal intervals around the pillar 6 as the center of the circle, and the upper ends of the four buffer support mechanisms are movably connected with the fixing ring 8. The movable connection relationship in this device refers to the movable connection through the universal joint.

[0024] Preferably, four anti-vibration mechanisms are provided and are respectively arranged on four side positions of the cover 5 to resist shaking of the wind turbine body 7 in multiple directions.

[0025] In this embodiment, the anti-seismic mechanism includes two concave frames 9 symmetrically fixed to the inner bottom wall of the bottom shell 3 and the inner top wall of the cover shell 5, the inner walls of the two concave frames 9 are fixedly connected with a fixing rod 10, and the two fixing rods 10 are sleeved and slidably connected with two symmetrically arranged sliding blocks 11. A first spring 12 is fixedly connected between the inner walls of the two ends of the concave frame 9 and the two sliding blocks 11. Two cross-arranged rocker arms 13 are hingedly connected between the four sliding blocks 11. The intersection of the two rocker arms 13 is rotatably connected by a rotating pin. The inner bottom wall of the bottom shell 3 and the inner top wall of the cover shell 5 are fixedly connected to the inner wall of the bottom shell 3 and the inner top wall of the cover shell 5. There are two symmetrically arranged damping mechanisms fixedly connected between them. When the floating base 1 is shaken by the impact of waves, the wind turbine body 7 is driven to shake. At this time, the cover shell 5 is driven to displace in the bottom shell 3. At this time, the two concave frames 9 are displaced relative to each other, and the two rocker arms 13 swing crosswise. At this time, the two groups of sliding blocks 11 are displaced in opposite directions on the two fixed rods 10, and the two groups of first springs 12 are squeezed and contracted to generate elastic force. At the same time, the elastic force of the two damping mechanisms is cooperated to improve the seismic protection of the wind turbine body 7, thereby improving its performance in resisting wave impact.

[0026] In this embodiment, the buffer support mechanism includes a fixed bar shell 14 fixed to the upper side wall of the cover shell 5, a support rod 15 is fixedly connected to the fixed bar shell 14, a movable sleeve 16 is sleeved and slidably connected to the support rod 15, and a second spring 17 is fixedly connected between the inner walls of both ends of the fixed bar shell 14 and the two ends of the movable sleeve 16. The upper side wall of the movable sleeve 16 is fixedly connected to a connecting block 18, and the upper side wall of the fixed bar shell 14 is provided with a sliding opening 19. The upper end of the connecting block 18 passes through the sliding opening 19 and is movably connected to a support arm 20. The support arm 20 is fixedly connected to the inner wall of the fixed bar shell 14 and the two ends of the movable sleeve 16. The upper end is movably connected to the fixed ring 8. When the wind turbine body 7 follows the floating base 1 and is impacted by waves and shakes, the pillar 6 is driven to shake. At this time, the support arm 20 is squeezed and swings, pushing the movable sleeve 16 fixed to the connecting block 18 to move on the support rod 15. At this time, the second spring 17 is squeezed and contracts to generate elastic force. By utilizing its elastic force, the shaking impact force of the wind turbine body 7 can be buffered, thereby improving the impact resistance of the support of the pillar 6, and thereby improving the protection of the wind turbine body 7.

[0027] like Figure 4 As shown, the inner walls on both sides of the sliding opening 19 are slidably connected to the side walls on both sides of the connecting block 18, so that the connecting block 18 is more stable when displacing.

[0028] In this embodiment, the damping mechanism includes a hydraulic rod 21 and a third spring 22 vertically fixed on the bottom wall of the bottom shell 3 and the top wall of the cover shell 5. The third spring 22 is sleeved on the outside of the hydraulic rod 21. When the cover shell 5 swings up and down, the hydraulic rod 21 and the third spring 22 can be squeezed and contracted to generate elastic force. The coordinated elastic force of the two produces a damping effect, which can ensure the anti-seismic effect and further improve the anti-seismic stability of the wind turbine body 7 when the floating base 1 is impacted by waves.

[0029] like Figure 1 As shown: the four side walls of the floating base 1 are fixedly connected with anti-collision rubber tubes 25 to prevent floating garbage on the sea from colliding with the floating base 1.

[0030] Preferably, four corners on both sides of the bottom shell 3 are fixedly connected with mounting plates 23 , and the mounting plates 23 are fixedly connected to the floating base 1 by bolts and can be disassembled for maintenance.

[0031] Preferably, the bottom outer wall of the cover shell 5 is fixedly connected with a guide slide frame 24 , and the inner wall of the bottom shell 3 is slidably connected to the outer wall of the guide slide frame 24 , so that the cover shell 5 maintains linear displacement in the bottom shell 3 .

[0032] like Figure 1 As shown: the four side walls of the floating base 1 are fixedly connected with anti-collision rubber tubes 25 to prevent floating garbage on the sea from colliding with the floating base 1.

[0033] Working principle: When the floating base 1 is shaken by the impact of waves, it drives the wind turbine body 7 to shake. At this time, the cover 5 is driven to move in the bottom shell 3. At this time, the two concave frames 9 move relative to each other, and the two rocker arms 13 swing crosswise. At this time, the two sets of sliding blocks 11 move in opposite directions on the two fixed rods 10. The two sets of first springs 12 are squeezed and contracted to generate elastic force. At the same time, the hydraulic rod 21 and the third spring 22 are also squeezed and contracted to generate elastic force. The combined elastic force of the two produces a damping effect, which can ensure the anti-seismic effect, improve the anti-seismic protection of the wind turbine body 7, and thus improve its performance in resisting wave impact.

[0034] When the wind turbine body 7 follows the floating base 1 and is shaken by the impact of waves, it drives the pillar 6 to shake. At this time, the support arm 20 is squeezed and swings, pushing the movable sleeve 16 fixed to the connecting block 18 to move on the support rod 15. At this time, the second spring 17 is squeezed and contracts to generate elastic force. By utilizing its elastic force, the shaking impact force of the wind turbine body 7 can be buffered, thereby improving the impact resistance of the support of the pillar 6 and thereby improving the protection of the wind turbine body 7.

Claims

1. A floating support structure for an offshore wind turbine, comprising a floating base (1), characterized in that: The four corners of the bottom of the floating base (1) are fixedly connected to a mooring mechanism (2), the upper side wall of the floating base (1) is fixedly connected to a bottom shell (3), the upper side wall of the bottom shell (3) is provided with an opening (4), a cover shell (5) is inserted into the opening (4) and slidably connected, a plurality of anti-seismic mechanisms are fixedly connected between the inner bottom wall of the bottom shell (3) and the inner top wall of the cover shell (5), a pillar (6) is movably connected to the center of the upper side wall of the cover shell (5), the top of the pillar (6) is fixedly connected to a wind turbine body (7), the outer side wall of the pillar (6) is fixedly connected to a fixing ring (8), the upper side wall of the cover shell (5) is fixedly connected to four buffer support mechanisms arranged at equal intervals around the pillar (6) as the center, and the upper ends of the four buffer support mechanisms are movably connected to the fixing ring (8).

2. The floating support structure for an offshore wind turbine according to claim 1, characterized in that: The anti-seismic mechanism comprises two concave frames (9) symmetrically fixed to the inner bottom wall of the bottom shell (3) and the inner top wall of the cover shell (5), the inner walls of the two concave frames (9) are fixedly connected with a fixing rod (10), the two fixing rods (10) are sleeved and slidably connected with two symmetrically arranged sliding blocks (11), the inner walls at both ends of the concave frame (9) and the two sliding blocks (11) are fixedly connected with a first spring (12), the four sliding blocks (11) are hingedly connected with two cross-arranged rocker rods (13), the intersection of the two rocker rods (13) is rotatably connected by a rotating pin, and the inner bottom wall of the bottom shell (3) and the inner top wall of the cover shell (5) are fixedly connected with two symmetrically arranged damping mechanisms.

3. The floating support structure for an offshore wind turbine according to claim 2, characterized in that: Four anti-vibration mechanisms are provided, and the four anti-vibration mechanisms are respectively arranged at four side positions of the cover shell (5).

4. The floating support structure for an offshore wind turbine according to claim 1, characterized in that: The buffer support mechanism comprises a fixed strip shell (14) fixed to the upper side wall of the cover shell (5), a support rod (15) fixedly connected in the fixed strip shell (14), a movable sleeve (16) sleeved on the support rod (15) and slidably connected, a second spring (17) fixedly connected between the inner walls at both ends of the fixed strip shell (14) and the two ends of the movable sleeve (16), a connecting block (18) fixedly connected to the upper side wall of the movable sleeve (16), a sliding opening (19) opened on the upper side wall of the fixed strip shell (14), an upper end of the connecting block (18) passes through the sliding opening (19) and is movably connected to a support arm (20), and an upper end of the support arm (20) is movably connected to the fixed ring (8).

5. The floating support structure for an offshore wind turbine according to claim 4, characterized in that: The inner walls on both sides of the sliding opening (19) are slidably connected to the side walls on both sides of the connecting block (18).

6. The floating support structure for an offshore wind turbine according to claim 2, characterized in that: The damping mechanism comprises a hydraulic rod (21) and a third spring (22) vertically fixed to the inner bottom wall of the bottom shell (3) and the inner top wall of the cover shell (5); the third spring (22) is sleeved on the outer side of the hydraulic rod (21).

7. The floating support structure for an offshore wind turbine according to claim 1, characterized in that: The outer side wall of the bottom of the cover shell (5) is fixedly connected to a guide sliding frame (24), and the inner wall of the bottom shell (3) is slidably connected to the outer side wall of the guide sliding frame (24).

8. The floating support structure for an offshore wind turbine according to claim 1, characterized in that: The four side walls of the floating base (1) are all fixedly connected with anti-collision rubber cylinders (25).

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