Semi-submersible wind power generation foundation platform

Abstract

The invention relates to the technical field of offshore wind power generation, in particular to a semi-submersible type wind power generation foundation platform which comprises a wind tower, three supporting buoys, a center buoy, a drop hammer rod, a water pumping mechanism and a table top support, the three supporting buoys are arranged at equal intervals, and the bottom ends of the interiors of the supporting buoys are fixedly connected with empty barrel parts; a cavity area is formed between the empty barrel part and the inner wall of the supporting buoy, and a water pump is installed in the supporting buoy. According to the device, through the arrangement of the water pumping mechanism, when the wind tower drives the three supporting buoys to incline rightwards, the supporting buoys drive the drop hammer rod to incline firstly, then the drop hammer rod returns to the state of approaching to the sag under the action of gravity, and the drop hammer rod passes through the water pumping mechanism when returning to correct; and the pressure bin water in the cavity area on the right side of the central axis is partially pumped into the cavity area on the left side of the central axis, so that the buoyancy of the supporting buoy on the right side is increased, the buoyancy of the supporting buoy on the left side is reduced, and the three supporting buoys are integrally aligned, so that the wind tower returns to the vertical state again.

Description

Technical Field

[0001] The invention relates to the technical field of offshore wind power generation, in particular to a semi-submersible wind power generation foundation platform. Background Art

[0002] The cabin of a semi-submersible wind turbine is lower, with higher stability and wind resistance. In extreme sea conditions, the platform can automatically detach from the sea surface, thereby improving safety and having less visual impact, reducing the visual impact on the sea surface, which is suitable for the layout of wind farms in coastal cities and has higher power generation efficiency. Semi-submersible platforms are suitable for deep waters and can capture wind energy in deep waters that traditional bottom-fixed turbines cannot reach, expanding the depth and breadth of wind energy utilization.

[0003] The wind direction at sea near the coast is changeable. For example, the wind direction at sea blows from the sea to the land during the day and blows from the land to the sea at night. As a result, the offshore semi-submersible power generation platform needs to adapt to the frequently changing wind direction. The fan blades of the wind turbine can generally be automatically deflected according to the wind direction, but the platform under the wind turbine is restricted by the mooring system, and the angle of the platform cannot be greatly changed. When the wind blows the wind turbine to one side, the platform will tilt to one side under the action of the wind. In order to correct the tilt of the existing foundation platform, it is generally through adjusting the ballast water in each buoy to make the whole return to the right position. When the wind direction changes, it is necessary to readjust the ballast water in each buoy to correct the platform. The existing platform tilt adjustment and correction is mainly carried out by a water pump, which results in a long working time of the water pump and relatively poor working conditions at sea. In this regard, a semi-submersible wind power generation foundation platform is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a semi-submersible wind power generation foundation platform to solve the problems raised in the above background technology.

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

[0006] Semi-submersible wind power generation foundation platform, including

[0007] There are three supporting buoys, and the three supporting buoys are arranged equidistantly, a hollow cylinder portion is fixedly connected to the inner bottom end of the supporting buoy, a cavity area is formed between the hollow cylinder portion and the inner wall of the supporting buoy, and a water pump is installed inside the supporting buoy;

[0008] A table support, fixed between the top ends of the three supporting buoys, the table support serving as a connecting corridor between the three supporting buoys, and the table support being used to fix the supporting buoys;

[0009] The wind tower is fixedly installed in the middle of the table bracket;

[0010] There are three pumping mechanisms, which are respectively arranged in three supporting buoys, and are used to pump ballast water in the other two pumping mechanisms into the corresponding pumping mechanisms;

[0011] A central buoy is fixed at the bottom of the middle position of the table support, and the bottom end of the central buoy and the bottom ends of the three supporting buoys are fixedly connected to the underwater support;

[0012] The top end of the hanging hammer rod is spherically connected to the bottom end of the central buoy, and the bottom end of the hanging hammer rod is connected to three pumping mechanisms.

[0013] Furthermore, the pumping mechanism includes a receiving pipe, a plurality of suction units are fixedly connected at the bottom of the receiving pipe, a movable buoy is arranged at the bottom of the plurality of suction units, the top of the movable buoy is fixedly connected to the bottom ends of the plurality of suction units, the bottom end of the supporting buoy is fixedly connected to a transmission module, the bottom end of the movable buoy is fixedly connected to a steel cable 2, one end of the steel cable 2 is wound and connected with the transmission module, the bottom end of the hanging hammer rod is fixedly connected to three steel cables 1, one end of the three steel cables 1 are respectively connected for transmission with three transmission modules, the top end of the receiving pipe is fixedly connected to two cross-border tubes, one end of the two cross-border tubes are respectively connected to the other two supporting buoys.

[0014] Furthermore, one end of the cross-border pipe is set as a probe end, and the probe end probes down to the bottom end of the cavity area in the adjacent supporting buoy.

[0015] Furthermore, the bottom end of the receiving tube is fixedly connected to a collecting ring tube, the collecting ring tube is connected to a plurality of suction units, a one-way valve is fixedly installed at the top end of the receiving tube, and the through direction of the one-way valve is from the top end of the receiving tube to the bottom end of the receiving tube.

[0016] Furthermore, the suction unit includes a water pumping cylinder, the top end of which is connected to an adjacent collecting ring pipe, the water pumping cylinder is fixedly connected to the inner wall of the empty cylinder, a piston disk is slidably sleeved on the inner wall of the water pumping cylinder, a piston push rod is fixedly connected between the bottom end of the piston disk and the top end of the movable float, and a drainage pipe is fixedly connected to the top end of the water pumping cylinder.

[0017] Furthermore, the top end height of the drain pipe is located above the one-way valve 1, and the one-way valve 2 is fixedly installed on the drain pipe.

[0018] Furthermore, the transmission module includes an axle, one end of the axle is fixedly sleeved with a winding wheel 2, the middle position of the axle is slidably sleeved with a winding wheel 1, the bottom end of the movable buoy is fixedly connected to a steel cable 2, one end of the steel cable 2 is wound around and connected to the winding wheel 1, one end of the steel cable 1 is wound around and connected to the adjacent winding wheel 2, the bottom end of the supporting buoy is fixedly connected to two fixed seats, and one of the fixed seats is transmission-connected to the winding wheel 2.

[0019] Furthermore, the first winding wheel is of a truncated cone shape, an outer side wall of the first winding wheel is provided with a tapered thread groove, and one end of the second steel cable is wound in the tapered thread groove.

[0020] Furthermore, one end of the winding wheel is fixedly connected with an external threaded sleeve rod, the bottom end of the other fixed seat of the two fixed seats is fixedly connected with an internal threaded sleeve, and the external threaded sleeve rod and the internal threaded sleeve are screwed together.

[0021] Furthermore, a plurality of supporting wheels are installed at the bottom and top of the outer side wall of the movable buoy, and the supporting wheels are in contact with the inner wall of the hollow cylinder portion.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through the setting of the pumping mechanism, when the wind tower drives the three supporting buoys to tilt to the right, the supporting buoy drives the hanging hammer rod to tilt first, and then the hanging hammer rod returns to a nearly vertical state under the action of gravity. When the hanging hammer rod returns to the center, it uses the pumping mechanism to extract part of the ballast water in the cavity area on the right side of the central axis to the cavity area on the left side of the central axis, so that the buoyancy of the supporting buoy on the right side increases and the buoyancy of the supporting buoy on the left side decreases, so that the three supporting buoys return to the center as a whole and the wind tower returns to the vertical state, so as to correct the inclination of the platform and improve the stability of the platform;

[0024] 2. Through the setting of the transmission module, when the platform tilts as a whole and sways left and right, when the steel cable 2 of the winding wheel pair is reeled, the conical spiral setting of the conical thread groove makes the steel cable 2 gradually wind around the large end of the winding wheel 1, and when the opposite hanging hammer rod releases the winding wheel 2 on the right side, the tangent point between the steel cable 2 on the right side and the winding wheel 1 is transferred to the small end of the winding wheel 1, and then when the swing of multiple supporting buoys and wind towers causes the hanging hammer rod to oscillate, the stroke of the hanging hammer rod pulling the movable buoy on the left side to move up and down is greater than the stroke of the movable buoy on the right side, so that the ballast water extracted by the pumping mechanism on the left side at a time is greater than the ballast water extracted by the pumping mechanism on the right side at a single time, so that through the swinging and oscillation of the platform, the ballast water on the inclined side is gradually transferred to the other side, so that the multiple supporting buoys and wind towers are gradually returned to the center, thereby reducing the working intensity of the original water pump for adjusting the ballast water, and avoiding the difficulty of the platform to return to the center after the water pump fails, thereby improving the safety performance of the platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall side view structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of multiple supporting buoys in the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of the supporting buoy in the present invention;

[0029] Figure 5 It is a schematic diagram of the cross-border pipe structure in the present invention;

[0030] Figure 6 It is a schematic diagram of the overall tilted state structure of the present invention;

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

[0032] Figure 8 It is a schematic diagram of the transmission module structure in the present invention;

[0033] Fig. 9 It is a structural schematic diagram of a winding wheel in the present invention.

[0034] In the figure: 100, wind tower; 100a, central axis; 200, supporting buoy; 210, hollow cylinder; 220, cavity area; 300, central buoy; 400, hanging hammer rod; 410, steel cable 1; 500, pumping mechanism; 510, cross-border pipe; 511, probe end; 520, receiving pipe; 521, one-way valve 1; 522, collecting ring pipe; 530, suction unit; 531, pumping cylinder; 5 32. Drain pipe; 533. Piston disc; 534. Piston push rod; 540. Movable buoy; 541. Steel cable 2; 542. Support wheel; 550. Transmission module; 551. Winding wheel 1; 552. Shaft; 553. Fixed seat; 554. Winding wheel 2; 555. Internal thread sleeve; 556. External thread sleeve rod; 557. Conical thread groove; 600. Table bracket; 610. Underwater bracket. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 9 In an embodiment of the present invention, a semi-submersible wind power generation foundation platform includes a wind tower 100, a supporting buoy 200, a central buoy 300, a hanging hammer rod 400, a pumping mechanism 500 and a table bracket 600. The number of the supporting buoys 200 is three, and the three supporting buoys 200 are equidistantly arranged. An empty cylinder portion 210 is fixedly connected to the inner bottom end of the supporting buoy 200, and a cavity area 220 is formed between the empty cylinder portion 210 and the inner wall of the supporting buoy 200. A water pump is installed inside the supporting buoy 200, and the water pump is used to discharge or discharge the ballast water in the cavity area 220. The table bracket 600 is fixed between the top ends of the three supporting buoys 200, and the table bracket 600 serves as a connecting corridor between the three supporting buoys 200. The table bracket 600 is used to fix the supporting buoy 200, and the wind tower 100 is fixedly installed in the middle position of the table bracket 600. There are three pumping mechanisms 500, and the three pumping mechanisms 500 are respectively arranged in the three supporting buoys 200. The pumping mechanism 500 is used to pump the ballast water in the other two pumping mechanisms 500 into the corresponding pumping mechanism 500. The central buoy 300 is fixed at the bottom end of the middle position of the table bracket 600, and the underwater bracket 610 is fixedly connected between the bottom end of the central buoy 300 and the bottom ends of the three supporting buoys 200. The top end of the hanging hammer rod 400 is spherically connected to the bottom end of the central buoy 300, and the bottom end of the hanging hammer rod 400 is connected to the three pumping mechanisms 500.

[0037] Specifically, initially, ballast water is pumped into the cavity area 220 by a water pump, thereby adjusting the overall diving height of the plurality of supporting buoys 200 to attach Figure 6 Taking the left and right as an example, when the wind blows from left to right toward the fan blades, the three supporting buoys 200 will be driven to tilt to the right through the wind tower 100, that is, the supporting buoy 200 on the left side of the central axis 100a rises and tilts, and the supporting buoy 200 on the right side of the central axis 100a drops and tilts. Through the movable connection between the hanging hammer rod 400 and the central buoy 300, the supporting buoy 200 drives the hanging hammer rod 400 to tilt first, and then the hanging hammer rod 400 returns to the center under the action of gravity. In the vertical state, the boom rod 400, when returning to the center, extracts part of the ballast water in the cavity area 220 on the right side of the central axis 100a into the cavity area 220 on the left side of the central axis 100a through the pumping mechanism 500, so that the buoyancy of the supporting buoy 200 on the right side increases and the buoyancy of the supporting buoy 200 on the left side decreases, so that the three supporting buoys 200 return to the center as a whole, so that the wind tower 100 returns to the vertical state, the inclination of the platform is corrected, and the stability of the platform is improved.

[0038] Embodiment 1

[0039] like Figures 4 to 7As shown, in this embodiment, the pumping mechanism 500 includes a receiving pipe 520, a plurality of suction units 530 are fixedly connected below the receiving pipe 520, a movable buoy 540 is arranged below the plurality of suction units 530, the top of the movable buoy 540 is fixedly connected to the bottom ends of the plurality of suction units 530, a transmission module 550 is fixedly connected to the bottom end of the supporting buoy 200, a steel cable 2 541 is fixedly connected to the bottom end of the movable buoy 540, one end of the steel cable 2 541 is wound and connected with the transmission module 550, three steel cables 1 410 are fixedly connected to the bottom end of the boom rod 400, one end of the three steel cables 1 410 is respectively connected to the three transmission modules 550 for transmission, the top end of the receiving pipe 520 is fixedly connected to two cross-border pipes 510, one end of the two cross-border pipes 510 is respectively connected to the inside of the other two supporting buoys 200, one end of the cross-border pipe 510 is set as an exploration end 511, and the exploration end 511 is probed down to the adjacent The bottom end of the cavity area 220 in the supporting buoy 200, the bottom end of the receiving pipe 520 is fixedly connected with a collecting ring pipe 522, and the collecting ring pipe 522 is connected with a plurality of suction units 530. A check valve 521 is fixedly installed at the top of the receiving pipe 520. The conducting direction of the check valve 521 is from the top of the receiving pipe 520 to the bottom of the receiving pipe 520. The suction unit 530 includes a pumping cylinder 531. The top of the pumping cylinder 531 is connected to The adjacent collecting ring pipes 522 are connected, the water pumping cylinder 531 is fixedly connected to the inner wall of the empty cylinder part 210, the inner wall of the water pumping cylinder 531 is slidably sleeved with a piston disk 533, a piston push rod 534 is fixedly connected between the bottom end of the piston disk 533 and the top end of the movable float 540, a drain pipe 532 is fixedly connected to the top end of the water pumping cylinder 531, the top end height of the drain pipe 532 is located above the one-way valve 521, and the drain pipe 532 is fixedly installed with a one-way valve 2.

[0040] In this embodiment, when the bottom end of the hanging hammer rod 400 deflects in the direction away from the supporting buoy 200, the hanging hammer rod 400 pulls the steel cable 1 410, and the steel cable 1 410 pulls the movable buoy 540 downward through the transmission module 550. When the movable buoy 540 moves downward, it pulls multiple piston push rods 534, and the piston push rods 534 drive the piston plate 533 to move downward, thereby extracting ballast water from the cavity area 220 in the other two supporting buoys 200 through the cross-border pipe 510, thereby transferring the ballast water on the right side to the pumping cylinder 531 in the supporting buoy 200 on the left side. When the bottom end of the hanging hammer rod 400 is close to the supporting buoy 200, the hanging hammer rod 400 pulls the steel cable 1 410, and the steel cable 1 410 pulls the movable buoy 540 downward through the transmission module 550. When the movable buoy 540 moves downward, it pulls multiple piston push rods 534, and the piston push rods 534 drive the piston plate 533 to move downward, thereby extracting ballast water from the cavity area 220 in the other two supporting buoys 200 through the cross-border pipe 510, thereby transferring the ballast water on the right side to the pumping cylinder 531 in the supporting buoy 200 on the left side. The hammer rod 400 relaxes the pull on the steel cable 410, so that the movable buoy 540 floats up under the action of buoyancy. When the movable buoy 540 moves up, the ballast water in the pumping cylinder 531 is pushed out from the drainage pipe 532 through the piston plate 533, so that the ballast water in the pumping cylinder 531 is sprayed into the cavity area 220. The ballast water is transferred from the pumping cylinder 531 to the cavity area 220 in the same supporting buoy 200 and does not affect the buoyancy of the supporting buoy 200. Therefore, when the wind tower 100 tilts to one side, the ballast water in the supporting buoy 200 on one side is transferred to the supporting buoy 200 on the other side, so as to correct the tilted platform.

[0041] Embodiment 2

[0042] On the basis of the first embodiment, in order to increase the transfer effect of the pumping mechanism 500 on the ballast water when the wind tower 100 is tilted, the correction efficiency of the wind tower 100 is improved.

[0043] like Figures 4 to 9 As shown, in this embodiment, the transmission module 550 includes a shaft 552, one end of the shaft 552 is fixedly sleeved with a winding wheel 554, the middle position of the shaft 552 is slidably sleeved with a winding wheel 551, the bottom end of the movable buoy 540 is fixedly connected with a steel cable 541, one end of the steel cable 541 is wound and connected with the winding wheel 551, one end of the steel cable 1 410 is wound and connected with the adjacent winding wheel 2 554, the bottom end of the supporting buoy 200 is fixedly connected with two fixed seats 553, and a transmission connection is formed between one of the fixed seats 553 and the winding wheel 2 554. Next, the winding wheel 551 is a truncated cone type, and a conical thread groove 557 is provided on the outer wall of the winding wheel 551. One end of the steel cable 541 is wound in the conical thread groove 557. An external threaded sleeve 556 is fixedly connected to one end of the winding wheel 551, and an internal threaded sleeve 555 is fixedly connected to the bottom end of the other fixed seat 553 of the two fixed seats 553. The external threaded sleeve 556 and the internal threaded sleeve 555 are screwed together. A plurality of supporting wheels 542 are installed on the bottom and top ends of the outer wall of the movable float 540, and the supporting wheels 542 are in contact with the inner wall of the empty cylinder portion 210.

[0044] In a specific implementation, when the platform is tilted as a whole, the platform is affected by waves and water flow and sways left and right at a certain angle. For example, when the platform is tilted to the right and sways left and right slightly, the overall trend of the hanging hammer rod 400 is to gradually return to the right position. When returning to the right position, the hanging hammer rod 400 pulls the left winding wheel 2 554 and the shaft rod 552 to rotate through the steel cable 1 410, and the shaft rod 552 drives the conical thread groove 557 to reel the winding wheel 1 551. When the steel cable 2 541 is wound, the steel cable 2 541 is gradually wound to the large end of the winding wheel 1 551 through the conical spiral setting of the conical thread groove 557. When the opposite hanging hammer rod 400 releases the winding wheel 2 554 on the right side, the tangent point between the steel cable 2 541 on the right side and the winding wheel 1 551 is transferred to the small end of the winding wheel 1 551. Then, when the swing of the plurality of supporting buoys 200 and the wind tower 100 causes the hanging hammer rod 400 to vibrate, the hanging hammer rod 400 is The hammer rod 400 pulls the movable buoy 540 on the left side to move up and down with a stroke greater than the movable buoy 540 on the right side, thereby making the ballast water extracted by the pumping mechanism 500 on the left side at a single time greater than the ballast water extracted by the pumping mechanism 500 on the right side at a single time, thereby through the swaying and oscillation of the platform, the ballast water on the inclined side is gradually transferred to the other side, so that the multiple supporting buoys 200 and the wind tower 100 are straightened. When the supporting buoys 200 and the wind tower 100 are straightened, the supporting buoys 200 oscillate, and the ballast water transferred out and transferred in the supporting buoys 200 on the left and right sides is the same, thereby maintaining the straightening state of the supporting buoys 200 and the wind tower 100, and realizing that the platform automatically straightens after the wind direction changes, making the entire platform more stable, thereby reducing the working intensity of the original water pump for adjusting the ballast water, and avoiding the difficulty of the platform to straighten after the water pump fails, thereby improving the safety performance of the platform.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A semi-submersible wind power generation foundation platform, characterized in that: include: There are three supporting buoys (200), and the three supporting buoys (200) are arranged equidistantly, and a hollow cylinder portion (210) is fixedly connected to the inner bottom end of the supporting buoy (200), and a cavity area (220) is formed between the hollow cylinder portion (210) and the inner wall of the supporting buoy (200); A table support (600) is fixed between the top ends of the three supporting buoys (200), the table support (600) serving as a connecting corridor between the three supporting buoys (200), and the table support (600) is used to fix the supporting buoys (200); A wind tower (100) is fixedly mounted at a middle position of the table support (600); There are three pumping mechanisms (500), the three pumping mechanisms (500) are respectively arranged in three supporting buoys (200), and the pumping mechanisms (500) are used to pump ballast water in the other two pumping mechanisms (500) into the corresponding pumping mechanisms (500); A central buoy (300) is fixed at the bottom end of the middle position of the table support (600), and an underwater support (610) is fixedly connected between the bottom end of the central buoy (300) and the bottom ends of the three supporting buoys (200); The top end of the hanging hammer rod (400) is spherically connected to the bottom end of the central buoy (300), and the bottom end of the hanging hammer rod (400) is connected to three pumping mechanisms (500).

2. The semi-submersible wind power generation foundation platform according to claim 1, characterized in that: The pumping mechanism (500) comprises a receiving pipe (520), a plurality of suction units (530) are fixedly connected below the receiving pipe (520), a movable buoy (540) is arranged below the plurality of suction units (530), the top end of the movable buoy (540) is fixedly connected to the bottom ends of the plurality of suction units (530), a transmission module (550) is fixedly connected to the bottom end of the supporting buoy (200), and a steel cable (540) is fixedly connected to the bottom end of the movable buoy (540). 1), one end of the steel cable 2 (541) is wound and connected with the transmission module (550), the bottom end of the boom rod (400) is fixedly connected with three steel cables 1 (410), one end of the three steel cables 1 (410) is respectively connected with the three transmission modules (550), the top end of the receiving tube (520) is fixedly connected with two cross-border tubes (510), one end of the two cross-border tubes (510) is respectively connected with the other two supporting buoys (200).

3. The semi-submersible wind power generation foundation platform according to claim 2, characterized in that: One end of the cross-border pipe (510) is set as an insertion end (511), and the insertion end (511) is inserted down to the bottom end of the cavity area (220) in the adjacent supporting buoy (200).

4. The semi-submersible wind power generation foundation platform according to claim 2, characterized in that: The bottom end of the receiving tube (520) is fixedly connected to a collecting ring tube (522), and the collecting ring tube (522) is connected to a plurality of suction units (530). The top end of the receiving tube (520) is fixedly installed with a one-way valve (521), and the through direction of the one-way valve (521) is from the top end of the receiving tube (520) to the bottom end of the receiving tube (520).

5. The semi-submersible wind power generation foundation platform according to claim 4, characterized in that: The suction unit (530) comprises a water pumping cylinder (531), the top end of which is connected to the adjacent collecting ring pipe (522), the water pumping cylinder (531) is fixedly connected to the inner wall of the hollow cylinder portion (210), a piston disc (533) is slidably sleeved on the inner wall of the water pumping cylinder (531), a piston push rod (534) is fixedly connected between the bottom end of the piston disc (533) and the top end of the movable float (540), and a drainage pipe (532) is fixedly connected to the top end of the water pumping cylinder (531).

6. The semi-submersible wind power generation foundation platform according to claim 5, characterized in that: The top end height of the drainage pipe (532) is located above the one-way valve (521), and the one-way valve (521) is fixedly installed on the drainage pipe (532).

7. The semi-submersible wind power generation foundation platform according to claim 6, characterized in that: The transmission module (550) comprises an axle (552), one end of which is fixedly sleeved with a winding wheel 2 (554), and the middle position of the axle (552) is slidably sleeved with a winding wheel 1 (551), the bottom end of the movable buoy (540) is fixedly connected with a steel cable 2 (541), one end of the steel cable 2 (541) is wound and connected with the winding wheel 1 (551), and one end of the steel cable 1 (410) is wound and connected with the adjacent winding wheel 2 (554), and the bottom end of the supporting buoy (200) is fixedly connected with two fixed seats (553), and one of the fixed seats (553) is transmission-connected with the winding wheel 2 (554).

8. The semi-submersible wind power generation foundation platform according to claim 7, characterized in that: The winding wheel 1 (551) is truncated cone-shaped, and the outer wall of the winding wheel 1 (551) is provided with a conical thread groove (557), and one end of the steel cable 2 (541) is wound in the conical thread groove (557).

9. The semi-submersible wind power generation foundation platform according to claim 8, characterized in that: One end of the winding wheel (551) is fixedly connected to an external threaded sleeve rod (556), and the bottom end of the other fixed seat (553) of the two fixed seats (553) is fixedly connected to an internal threaded sleeve (555), and the external threaded sleeve rod (556) and the internal threaded sleeve (555) are screwed together.

10. The semi-submersible wind power generation foundation platform according to claim 8, characterized in that: A plurality of supporting wheels (542) are installed at the bottom and top ends of the outer wall of the movable buoy (540), and the supporting wheels (542) are in contact with the inner wall of the hollow cylinder portion (210).

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