Offshore wind power anti-scour device driven by sea waves and implementation method

Abstract

The invention discloses an offshore wind power anti-scour device driven by sea waves and an implementation method. The device comprises a tower body and an anti-scour mechanism on the periphery of the tower body. The tower main body comprises a barrel-shaped foundation, a transition section and a tower barrel section; the anti-scouring mechanism comprises a sea wave gas collecting bin; a plurality of radial gas pipelines with sealing piston traction devices are arranged on the outer side of the tower main body; an anti-scouring covering film is arranged between any two adjacent radial gas pipelines; the lower ends of the radial gas pipelines are connected with a seabed through short piles; the upper end of each radial gas pipeline extends into the inner cavity of the sea wave gas collection bin; an annular gas conveying pipeline connected with the radial gas conveying pipeline is arranged on the outer side of the transition section; and the radial and annular gas pipelines are provided with a plurality of gas holes. Formation of eddy current and jet flow above the seabed can be prevented, the surface of the seabed is protected through the anti-scouring covering film, active and passive seabed scouring prevention is achieved, damage of seawater scouring to the pile foundation is effectively reduced, the anti-scouring covering film is convenient to unfold and contract, and daily maintenance is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to an offshore wind power anti-scour device driven by sea waves and an implementation method thereof. Background Art

[0002] As a clean energy, wind energy is attracting more and more attention. Compared with land-based wind energy, offshore wind power has a broader development prospect in the future due to its advantages such as low turbulence, no occupation of arable land, and proximity to the coast. However, offshore wind power also faces a complex wind, wave, and current environment. Among them, the scouring effect of waves and currents on the foundation of wind turbines is one of the most serious problems.

[0003] like Figure 1 As shown, the offshore wind turbine foundation includes a tower body, which includes a barrel foundation 1, a transition section 2 and a tower section 3 located at the top, and the top of the tower section 3 is used to install a wind turbine generator set. When the ocean current A1 flows through the tower section 3 of the wind power generation, the ocean current A1 will be disturbed due to the blocking effect of the tower section 3. On the one hand, water will be generated above the water surface; on the other hand, a downward jet A2 will be generated along the tower section 3 below the water surface. When the jet A2 approaches and hits the seabed 12, a vortex A3 will be further generated, thereby driving the sediment on the seabed 12 to move, forming a concave, large horseshoe-shaped scour pit around the barrel foundation 1, causing the structure of the barrel foundation 1 to be exposed outside the seabed 12. If the scouring is too large, it will undoubtedly seriously affect the safety and stability of the structure of the barrel foundation 1.

[0004] However, the existing anti-scour methods for offshore wind power foundations are not reasonably designed, and are greatly affected by terrain and water flow conditions, have high construction costs, and are time-consuming and labor-intensive to maintain.

[0005] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide an offshore wind power anti-scour device driven by sea waves and an implementation method in view of the technical defects existing in the prior art.

[0007] To this end, the present invention provides an offshore wind power anti-scour device driven by sea waves, comprising a tower body and an anti-scour mechanism arranged around the tower body;

[0008] The tower body includes a barrel foundation, a transition section and a tower section;

[0009] A transition section is provided at the top of the barrel foundation;

[0010] A barrel foundation is provided at the top of the transition section;

[0011] The barrel foundation is buried in the seabed, and the top surface of the barrel foundation is flush with the surface of the seabed;

[0012] Among them, the anti-scour mechanism includes a wave gas collection chamber, a plurality of anti-scour coatings, a sealing piston traction device, a radial gas transmission pipeline, an annular gas transmission pipeline, air holes and short piles;

[0013] A plurality of radial gas transmission pipelines are arranged around the outer side of the tower body at equal intervals from top to bottom;

[0014] An anti-scour coating is provided between any two adjacent radial gas pipelines;

[0015] The lower end of each radial gas pipeline is fixed to the seabed by a short pile;

[0016] The wave gas collecting chamber is fixedly arranged on the outer side of the tower section of the tower body in a circumferential manner;

[0017] The bottom opening of the wave gas collecting chamber;

[0018] The upper end of each radial gas transmission pipeline extends upward into the inner cavity of the hollow wave gas collection chamber;

[0019] Each radial gas transmission pipeline is provided with a sealing piston traction device which can move up and down;

[0020] Below the wave gas collection chamber, a hollow anti-scour membrane-covered storage chamber with an opening at the bottom is arranged around the chamber;

[0021] An anti-scour film storage compartment, used to store multiple anti-scour films in a folded state;

[0022] The upper end of each anti-scour coating is fixedly connected to the top inner wall of the anti-scour coating storage compartment or the circumferential outer wall of the tower section;

[0023] Both sides of the lower end of each anti-scour coating are respectively fixedly connected to a sealing piston traction device on an adjacent radial gas transmission pipeline;

[0024] An annular gas transmission pipeline is disposed around the lower circumferential outer side of the transition section of the tower body;

[0025] The annular gas transmission pipeline is connected to the lower section of the radial gas transmission pipeline close to the seabed;

[0026] A plurality of air holes are arranged on the lower pipe wall of the radial gas transmission pipe and the pipe wall of the annular gas transmission pipe.

[0027] In addition, the present invention also provides an implementation method of the above-mentioned offshore wind power anti-scour device driven by sea waves, which comprises the following steps:

[0028] Step S1, assembling the barrel foundation, transition section and tower section as a whole at the coast to obtain a tower body, and then installing an anti-scour mechanism around the tower body, the anti-scour mechanism including a wave gas collection chamber, an anti-scour film with bionic grass, a sealing piston traction device, a radial gas pipeline and an annular gas pipeline;

[0029] Step S2, float the tower body and the installed anti-scour mechanism as a whole, and then sink and install them as a whole after floating to the destination; after the cylinder foundation is sunk and installed, multiple short piles around the cylinder foundation are driven into the seabed in sequence to fix the tail of the radial gas pipeline to prevent it from moving;

[0030] Step S3, starting the installation construction of the anti-scour coating, so that the anti-scour coating is laid around the barrel foundation;

[0031] Step S4, start the wave gas collecting chamber, and transport atmospheric air to the seabed surface through the wave gas collecting chamber and radial gas pipelines and annular gas pipelines, thereby interfering with the formation of vortex A3 in the vortex area above the seabed, and blocking the downward jet A2 in front of the tower section, avoiding the scouring of the seabed around the cylindrical foundation.

[0032] It can be seen from the technical solution provided by the present invention above that, compared with the prior art, the present invention provides an offshore wind power anti-scouring device and implementation method driven by waves, which is scientifically designed and can prevent the formation of vortices and jets above the seabed, and protect the seabed surface through an anti-scouring film, thereby realizing active and passive anti-scouring of the seabed, effectively reducing the damage of seawater scouring the seabed to the pile foundation (i.e., barrel foundation), and conveniently unfolding and retracting the anti-scouring film, which is convenient for daily maintenance.

[0033] After inspection, the present invention proposes an energy-saving, efficient, economical and harmonious anti-scour solution from the two aspects of active and passive anti-scour, which can effectively reduce the damage caused by seawater scouring the seabed to the pile foundation (i.e., barrel foundation), has wide adaptability, is easy to maintain, and has great practical significance. The technical solution of the present invention is a fast, efficient, economical and green scour protection solution for offshore wind power, which is conducive to improving the overall safety and stability of offshore wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the working state of an existing offshore wind turbine foundation under the influence of ocean current;

[0035] Figure 2 The overall working principle diagram of an offshore wind power anti-scour device driven by sea waves provided by the present invention;

[0036] Figure 3A schematic diagram of the working state of an offshore wind power anti-scour device driven by sea waves provided by the present invention when the anti-scour film is not deployed and the air holes on the gas pipeline and the annular gas pipeline are not opened and gas does not flow out;

[0037] Figure 4 A three-dimensional axial schematic diagram of an offshore wind power anti-scour device driven by sea waves provided by the present invention after operation (i.e. after the anti-scour coating is deployed) Figure 1 ;

[0038] Figure 5 A three-dimensional axial schematic diagram of an offshore wind power anti-scour device driven by sea waves provided by the present invention after operation (i.e. after the anti-scour coating is deployed) Figure 2 ;

[0039] Figure 6 A schematic diagram of the operating principle of a wave gas collecting chamber 5 in an offshore wind power scour prevention device driven by sea waves provided by the present invention;

[0040] Figure 7 A cross-sectional view of a radial gas transmission pipeline and a sealing piston traction device in an offshore wind power anti-scour device driven by sea waves provided by the present invention;

[0041] Figure 8 A three-dimensional schematic diagram of the connection structure of a radial gas pipeline and a sealing piston traction device in an offshore wind power anti-scour device driven by sea waves provided by the present invention;

[0042] Fig. 9 for Figure 8 A partial enlarged schematic diagram of the left end portion of the shown figure;

[0043] Fig.10 A front side view of a connection structure of a radial gas pipeline and a sealing piston traction device in an offshore wind power anti-scour device driven by sea waves provided by the present invention;

[0044] Fig.11 For along Fig.10 A cross-sectional view of line DD shown;

[0045] In the figure, 1, barrel foundation; 2, transition section; 3, tower section; 4, short piles; 5, wave gas collection chamber;

[0046] 6. Anti-scouring coating; 7. Sealed piston traction device; 8. Radial gas pipeline; 9. Bionic grass;

[0047] 10. Stomata;

[0048] 11. Circular gas pipeline; 12. Seabed.

[0049] 81. Slit groove;

[0050] 51. Gas chamber shell; 52. Air inlet pipe; 53. First one-way air inlet valve; 54. One-way air exhaust valve; 55. Artificial air delivery pipe; 56. Second one-way air inlet valve;

[0051] 71. Piston connecting slider; 711. traction hole; 712. piston; 72. sealing cover. DETAILED DESCRIPTION

[0052] 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.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] See also Figures 2 to 11 The present invention provides an offshore wind power anti-scouring device driven by sea waves. The device is arranged on the offshore wind turbine foundation and is used to prevent the offshore wind turbine foundation from being scoured by sea water. It is suitable for various foundation structures such as offshore barrel foundation, gravity foundation, pile foundation, etc.

[0057] The offshore wind power anti-scour device of the present invention comprises: a tower body and an anti-scour mechanism arranged around the tower body;

[0058] The tower body includes a barrel foundation 1, a transition section 2 and a tower section 3;

[0059] A transition section 2 is provided at the top of the barrel foundation 1;

[0060] A barrel foundation 1 is provided at the top of the transition section 2;

[0061] The barrel foundation 1 is buried in the seabed 12, and the top surface of the barrel foundation 1 is flush with the surface of the seabed 12;

[0062] The anti-scour mechanism includes a wave gas collection chamber 5, a plurality of anti-scour coatings 6, a sealing piston traction device 7, a radial gas pipeline 8, an annular gas pipeline 11, an air hole 10 and a short pile 4;

[0063] A plurality of radial gas pipelines 8 are arranged around the outer side of the tower body at equal intervals from top to bottom;

[0064] An anti-scouring coating 6 is provided between any two adjacent radial gas pipelines 8;

[0065] The lower end of each radial gas pipeline 8 is fixed to the seabed 12 via a short pile 4;

[0066] The wave gas collecting chamber 5 is fixedly arranged on the outer side of the tower section 3 of the tower body in a circumferential manner;

[0067] The bottom of the wave gas collecting chamber 5 is open;

[0068] The upper end of each radial gas delivery pipeline 8 extends upward into the inner cavity of the hollow sea wave gas collection chamber 5;

[0069] Each radial gas transmission pipeline 8 is provided with a sealing piston traction device 7 which can move up and down;

[0070] Below the wave gas collection chamber 5, a hollow anti-scour membrane containing chamber 60 with an open bottom is arranged around;

[0071] The anti-scour film storage compartment 60 is used to store a plurality of (for example, six) anti-scour films 6 in a folded state;

[0072] Both sides of the upper end of each anti-scour coating 6 (specifically, the two corners on both sides of the upper end) are fixedly connected to the top inner wall of the anti-scour coating storage chamber 60 or the circumferential outer wall of the tower section 3;

[0073] The two sides (specifically the two corners) of the lower end of each anti-scour coating 6 are respectively fixedly connected to two sealing piston traction devices 7 (specifically the traction holes 711) on the two adjacent radial gas pipelines 8; that is, the two corners of the lower end of each anti-scour coating 6 are respectively connected to an adjacent traction hole 711 in the sealing piston traction device 7 on the two radial gas pipelines 8 on both sides of the anti-scour coating 6.

[0074] It should be noted that when the anti-scour coating 6 is fully unfolded under the traction of the sealing piston traction device 7, that is, when the anti-scour coating 6 is laid flat on the periphery of the cylindrical foundation 1, the top-view shape of each anti-scour coating 6 is a fan-ring shape, and at this time, the overall top-view shape composed of all multiple (for example, six) anti-scour coatings 6 is a circular ring shape.

[0075] An annular gas pipeline 11 is disposed around the lower circumferential outer side of the transition section 2 of the tower body;

[0076] The annular gas pipeline 11 is connected to the lower section of the radial gas pipeline 8 close to the seabed 12;

[0077] A plurality of air holes 10 are provided on the lower wall of the radial gas pipeline 8 and the wall of the annular gas pipeline 11 .

[0078] In the present invention, in a specific implementation, the upper end pipe wall of the radial gas transmission pipeline 8 is fixedly connected to the surrounding side walls of the barrel foundation 1 (for example, through a connecting rod);

[0079] On the seabed 12 outside the top of the barrel foundation 1, a plurality of short piles 4 are arranged at equal intervals around the seabed 12;

[0080] The lower tail of the radial gas pipeline 8 is in a closed state, and the lower tail of the radial gas pipeline 8 is fixed on the seabed 12 by a short pile 4 to prevent it from moving.

[0081] In the present invention, in specific implementation, as Figure 5 , Figure 6 As shown, the wave air collection chamber 5 comprises a hollow air chamber shell 51, an air inlet pipe 52 and an artificial air delivery pipe 55;

[0082] The gas storage shell 51 is arranged around the outer side of the tower section 3 in the circumferential direction;

[0083] The bottom of the gas chamber housing 51 is open;

[0084] A vertically distributed air inlet pipe 52 is provided on the top of the air storage housing 51;

[0085] The air inlet pipe 52 is communicated with the inner cavity of the air chamber shell 51;

[0086] The upper end portions of a plurality of radial gas delivery pipes 8 are disposed in the inner cavity of the gas storage housing 51 in a surrounding manner;

[0087] There is a gap between the top of the radial gas delivery pipeline 8 and the inner side of the top of the gas storage shell 51;

[0088] The upper portion of the radial gas delivery pipeline 8 is connected to the lower end of the artificial gas delivery pipe 55;

[0089] The upper end of the artificial air delivery pipe 55 is open and extends upward from the sea surface to be connected to an external air pump;

[0090] It should be noted that, in the present invention, the top position of the radial air delivery pipe 8 should be located above the seawater level for contact with the air. Under the up and down movement of the waves, the air will be compressed and enter the radial air inlet pipe 8 continuously.

[0091] In a specific implementation, the cross-sectional shape of the gas storage housing 51 is a circular ring.

[0092] In specific implementation, an air inlet is provided at the top of the air storage housing 51;

[0093] The air inlet is connected to the lower end of the air inlet pipe 52;

[0094] The upper end of the air inlet pipe 52 is open and extends upward from the sea surface to communicate with the external atmospheric environment;

[0095] Further, the top height of the air inlet pipe 52 is equal to the top height of the artificial air delivery pipe 55;

[0096] In specific implementation, a first one-way air intake valve 53 is provided on the air intake pipe 52;

[0097] It should be noted that a first one-way air intake valve 53 is also provided on the air intake pipe 52 , and external gas can only enter the gas chamber shell 51 through the first one-way air intake valve 53 and cannot be discharged through the air intake pipe 52 .

[0098] It should be noted that the radial gas pipeline 8 extends to the lower side of the top of the gas storage shell 51, and a certain gap is left. Gas can enter the radial gas pipeline 8 through the gap, but seawater cannot enter.

[0099] In specific implementation, a one-way exhaust valve 54 is provided on the radial gas pipeline 8, and the gas in the gas storage shell 51 can only be discharged into the radial gas pipeline 8 through the one-way exhaust valve 54, and the gas in the radial gas pipeline 8 cannot be discharged into the gas storage shell 51 of the Hailang gas collecting tank 5.

[0100] Furthermore, the connection position between the artificial air supply pipe 55 and the radial air supply pipeline 8 is lower than the installation position of the one-way exhaust valve 54 on the radial air supply pipeline 8 .

[0101] In specific implementation, a second one-way air inlet valve 56 is provided on the artificial air delivery tube 55;

[0102] It should be noted that, in the present invention, the second one-way air intake valve 56 only allows the gas from the external atmospheric environment to enter the radial air pipeline 8 through the artificial air pipeline 55, and does not allow the gas in the radial air pipeline 8 to be discharged outward through the second one-way air intake valve 56.

[0103] In the present invention, in specific implementation, as Figure 2 , Figure 3 As shown, the barrel foundation 1 is buried in the seabed 12 by sinking under negative pressure, and the top surface of the barrel foundation 1 is flush with the surface of the seabed 12 .

[0104] In the present invention, in specific implementation, a transition section 2 is provided at the top center position of the barrel foundation 1;

[0105] In specific implementation, the transition section 2 is a prestressed concrete structure, which is used to connect the barrel foundation 1 and the upper tower section 3.

[0106] In the present invention, in specific implementation, the tower section 3 can be a steel tower or a prestressed concrete tower.

[0107] In the present invention, in a specific implementation, the overall shape of the tower section 3 is a hollow cylinder.

[0108] In the present invention, in a specific implementation, the cross-sectional shape of the anti-scour coating container 60 is circular.

[0109] In the present invention, in specific implementation, as Figures 2 to 6 As shown, a circle of sea wave gas collecting chambers 5 is fixedly arranged around the tower section 3;

[0110] In the present invention, in specific implementation, the height of the wave gas collecting chamber 5 is located at the sea level, that is, the height of its top surface is equal to the sea level (the sea level is the average height of the sea);

[0111] In the present invention, in a specific implementation, the bottom of the wave gas collecting chamber 5 is open, and the bottom of the wave gas collecting chamber 5 is always kept submerged in seawater.

[0112] In the present invention, in a specific implementation, a plurality of bionic grasses 9 are evenly arranged on the upper surface of the anti-scour coating 6 .

[0113] It should be noted that, for the present invention, the sea wave gas collecting bin 5 is required to be corrosion resistant, and the material of the sea wave gas collecting bin 5 can be stainless steel or aluminum alloy.

[0114] It should also be noted that the anti-scour film 6 and the bionic grass 9 are required to be durable. The anti-scour film 6 can be made of phenolic film and ultra-high molecular weight polyethylene. The bionic grass 9 can be made of polymer materials such as polyethylene (PE) or polyvinyl chloride (PVC). The bionic grass 9 can intercept the sand and gravel on the seabed through large friction resistance.

[0115] In the present invention, the first one-way intake valve 53, the second one-way intake valve 56 and the one-way exhaust valve 54 are all conventional valves that are mature and well-known in the prior art. They are gas one-way valves that are used to control the direction of gas flow and have been widely used in various industries, so they will not be described in detail here.

[0116] In the present invention, for specific implementation, see Figures 7 to 9 A slotted groove 81 is provided on one side (eg, not facing the tower body) of each radial gas transmission pipeline 8, opening from top to bottom;

[0117] Each sealing piston traction device 7 comprises: a piston 712 and a piston connecting slider 71;

[0118] The inner cavity of each radial gas delivery pipeline 8 is sealed with a piston 712;

[0119] One end of the piston connecting slide block 71 passes through the slit groove 81 on the radial gas delivery pipeline 8 and is fixedly connected to one side of the piston 712;

[0120] The other end of the piston connecting slider 71 is fixedly connected to the lower ends of the two anti-scouring films 6 located on the left and right sides thereof.

[0121] In specific implementation, the shape of the piston 712 is cylindrical;

[0122] In a specific implementation, the diameter of the piston 712 is equal to the inner diameter of the radial gas pipeline 8 .

[0123] In specific implementation, an anti-scour coating 6 is provided between the two sealing piston traction devices 7 on any two adjacent radial gas pipelines 8, and the two sealing piston traction devices 7 are connected to both sides of the lower end of the anti-scour coating 6;

[0124] The other end of the piston connecting slider 71 is provided with two traction holes 711;

[0125] A tensioning rope (i.e., a traction rope) is respectively provided on both sides of the lower end of each anti-scour coating 6 (specifically, the corner positions, which are used as tensioning node positions, i.e., the corner areas of the lower edge of the anti-scour coating 6);

[0126] The two tensioning ropes (i.e., traction ropes) arranged on both sides of the lower end of each anti-scour coating 6 are connected to the two traction holes 711 on the opposite sides of the two sealed piston traction devices 7 located on both sides of the anti-scour coating 6, that is, the tensioning ropes (i.e., traction ropes) are tied to the traction holes 711.

[0127] It should be noted that the two traction holes 711 on each piston connecting slider 71 on the sealed piston traction device 7 are respectively connected to one side of the lower end (i.e., a corner of the lower end) of the two anti-scour coatings 6 located on both sides of the sealed piston traction device 7 (i.e., tied together by tensioning ropes). One end of each tensioning rope (i.e., traction rope) is connected to a traction hole 711 on a piston connecting slider 71, and the other end of each tensioning rope (i.e., traction rope) is connected to a tensioning node on one side of the lower end of the anti-scour coating 6 (i.e., a corner area at the lower end of the anti-scour coating 6, i.e., an area used for tying).

[0128] As mentioned above, the two corner portions at the lower end of each anti-scour coating 6 are respectively connected to adjacent traction holes 711 in the sealing piston traction device 7 on the two radial gas pipelines 8 on both sides of the anti-scour coating 6 .

[0129] It should be noted that, for the present invention, the outer end of the piston connecting the slider 71 is a bent end, which includes two bent parts and has two traction holes 711, which are respectively pulled with one end of the two anti-scour coatings 6. The outer sides of the anti-scour coating 6 have corners (i.e., as the tensioning nodes, which are the corner areas of the edges of the anti-scour coating 6), and the tensioning ropes (i.e., traction ropes) on the corners are tied to the traction holes 711 to achieve the connection between the anti-scour coating 6 and the traction holes 711, so that the movement of the piston 712 drives the anti-scour coating 6 to be unfolded or folded and contracted. That is, the function of driving the opening and contraction of the anti-scour coating 6 is achieved by the piston.

[0130] In specific implementation, a first limiting protrusion 811 and a second limiting protrusion 812 are provided on both sides of the top of the slit groove 81 of the radial gas transmission pipeline 8;

[0131] The first limiting protrusion 811 and the second limiting protrusion 812 are arranged parallel to each other;

[0132] One end of the piston connecting slide block 71 successively passes through the gap between the first limiting protrusion 811 and the second limiting protrusion 812 and the slit groove 81 on the radial gas transmission pipeline 8, and is fixedly connected to one side of the piston 712;

[0133] A sealing cover 72 is disposed above the first limiting protrusion 811 and the second limiting protrusion 812;

[0134] The sealing cover 72 is engaged with the second limiting protrusion 812;

[0135] It should be noted that the sealing cover 72 covers the first limiting protrusion 811 and the second limiting protrusion 812 .

[0136] Furthermore, a slot 8120 is provided on the upper part of the second limiting protrusion 812 away from the first limiting protrusion 811 (the regular cross-section of the slot 8120 is a triangle);

[0137] A snap-fitting protrusion 720 (i.e., an inner concave buckle) is provided on one side of the sealing cover 72 at a position corresponding to the snap-fitting groove 8120;

[0138] The engaging protrusion 720 is engaged with the engaging groove 8120 on the second limiting protrusion 812;

[0139] The sealing cover 72 has an inner groove opening downward;

[0140] The first limiting protrusion 811 and the second limiting protrusion 812 are located in the inner groove;

[0141] There is a gap between the other side of the sealing cover 72 and the first limiting protrusion 811;

[0142] The gap is used to accommodate the piston connecting slider 71, and the width of the gap is greater than the width of the piston connecting slider 71. In other words, after the piston connecting slider 71 passes through the gap, there is still a certain gap.

[0143] In order to more clearly understand the technical solution of the present invention, the working principle of the present invention is explained below.

[0144] 1. The offshore wind power anti-scour device of the present invention includes the following wave gas collection chamber gas injection working mode:

[0145] See also Figure 3 , Figure 6 As shown, when the sea waves fluctuate up and down, the seawater in the sea wave gas collecting bin 5 of the present invention will fluctuate. When the seawater level in the sea wave gas collecting bin 5 drops, negative pressure is formed in the sea wave gas collecting bin 5. Under the action of atmospheric pressure, the first one-way air inlet valve 53 on the air inlet pipe 52 opens, and the external gas enters the sea wave gas collecting bin 5 through the air inlet pipe 52.

[0146] When the seawater level in the wave gas collection bin 5 rises, the pressure in the wave gas collection bin 5 rises, squeezing the gas in the wave gas collection bin 5 into the radial gas pipeline 8 through the one-way exhaust valve 54. Thus, as the waves continue to fluctuate, a continuous supply of external gas will be delivered to the radial gas pipeline 8.

[0147] 2. Figure 2 , Figure 3As shown, the radial gas pipeline 8 extends from top to bottom along the tower section 3, the transition section 2 and the cylindrical foundation 1 to the seabed 12, and six pipelines are evenly distributed along the circumference and fixed on the tower body in sequence. The top of the radial gas pipeline 8 is located at the upper part of the inner cavity of the sea wave gas collection chamber 5, as shown in FIG. Figure 3 , Figure 4 The tail of the radial gas transmission pipeline 8 is in a closed state, and is fixed to the seabed 12 by short piles 4 to prevent it from moving.

[0148] A plurality of controllable air holes 10 are provided on the radial gas pipeline 8 near the seabed, and the staff can electrically control the opening and closing of the air holes 10 on the sea surface. Figure 4 As shown, near the seabed 12, there is an annular gas pipeline 11 connected to the radial gas pipeline 8, and a plurality of air holes 10 whose switches can be controlled are also provided on the annular gas pipeline 11.

[0149] It should be noted that the controllable switch installed on the air hole 10 is a remotely controllable switch valve, that is, a wireless remote control valve, which is a conventional valve that is mature and well-known in the prior art and will not be described in detail here.

[0150] In combination with the above structural design, the offshore wind power anti-scouring device of the present invention includes the following anti-scouring working mode of the seabed around the cylindrical foundation:

[0151] When the wave gas collection chamber 5 is in operation (i.e., gas injection), when a large amount of gas continuously enters the radial gas pipeline 8, the gas will continuously move toward the deep seabed (i.e., the direction of the seabed 12) along the gas pipeline 8 and the annular gas pipeline 11. When encountering the pore 10, the gas will leak out of the pipeline through the pore 10. Since the bionic grass 9 is arranged around the pore 10, the gas will be dispersed into many tiny bubbles under the disturbance of the bionic grass 9. In the process of these small bubbles rising from the seabed, an upward buoyancy area B1 will be formed. The buoyancy of the B1 area will, on the one hand, interfere with the formation of the vortex A3 in the vortex area above the seabed 12, and prevent the vortex A3 from scouring the seabed 12 around the barrel foundation 1. On the other hand, it also prevents the downward jet A2 in front of the tower section 3, thereby preventing the seabed 12 from being scoured from two aspects. Therefore, it can effectively prevent the structure of the barrel foundation 1 from being exposed outside the seabed 12, and ensure the safety and stability of the structure of the barrel foundation 1.

[0152] 3. Figure 2 , Figure 3As shown, below the wave air collecting chamber 5, there is a container (i.e., an anti-scour coating containing chamber 60), in which a circle of stacked anti-scour coatings 6 (specifically, six anti-scour coatings 6 distributed around) are arranged, and one end (i.e., the upper end) of the anti-scour coating 6 is fixed on the anti-scour coating containing chamber 60, and the other end (i.e., the two corners at the lower end) is fixed on two adjacent sealed piston traction devices 7 (specifically, the two traction holes 711 on the opposite sides of the two adjacent sealed piston traction devices 7).

[0153] The offshore wind power anti-scour device of the present invention includes the following anti-scour coating deployment construction working mode:

[0154] When the anti-scour coating 6 is being constructed, the air holes 10 on the radial gas pipeline 8 and the annular gas pipeline 11 are first controlled to be in a closed state;

[0155] Then, to Figure 6 A large amount of high-pressure gas is injected into the artificial gas pipe 55 shown. After the high-pressure gas enters the radial gas pipeline 8, it can push the piston 712 in the sealing piston traction device 7, so that the sealing piston traction device 7 can move downward on the radial gas pipeline 8, thereby driving one end of the anti-scour coating 6 to slide downward along the radial gas pipeline 8 and unfold, thereby achieving the goal of laying the anti-scour coating 6 around the tower body of the offshore wind turbine foundation; the final unfolding effect diagram of the anti-scour coating 6 is shown in FIG. Figure 4 shown.

[0156] It should be noted that, for the present invention, at this time, artificial Figure 6 High-pressure gas is injected into the artificial air pipe 55 and the radial air pipeline 8 connected to the artificial air pipe 55 instead of using the wave air collecting chamber 5 for gas injection. This is because the air pressure generated by the waves is small and insufficient to push the piston 712 in the sealing piston traction device 7 to move in the radial air pipeline 8.

[0157] Specifically, the high-pressure air pump can be used manually to connect the air outlet of the high-pressure air pump to the top opening of the artificial air delivery pipe 55, and the high-pressure air pump can be used to pump air into the air pipe 55. Figure 6 High-pressure gas is injected into the artificial gas delivery tube 55 and the radial gas delivery pipeline 8 connected to the artificial gas delivery tube 55.

[0158] 4. The offshore wind power anti-scour device of the present invention includes the following anti-scour film replacement working modes:

[0159] As time goes by, when the original anti-scour coating 6 is corroded in seawater and needs to be replaced, it is also very simple. First, the air holes 10 on the radial gas pipeline 8 and the annular gas pipeline 11 are controlled to be in a closed state;

[0160] Then, negative pressure is drawn into the artificial gas transmission pipe 55. Under the effect of the negative pressure, the piston 712 in the sealing piston traction device 7 is pushed, and the sealing piston traction device 7 located at the tail of the radial gas transmission pipeline 8 moves upward along the radial gas transmission pipeline 8 toward the sea surface (i.e., away from the seabed 12, the sea surface is above the seabed 12);

[0161] Then, the sealing piston traction device 7 drives the anti-scour coating 6 to shrink and fold as a whole, and finally shrinks into the anti-scour coating accommodating chamber 60 .

[0162] It should be noted that, in the present invention, the anti-scour film 6 retracted into the anti-scour film accommodation chamber 60 can be replaced manually on the sea surface by staff. Therefore, the present invention can realize both the automatic deployment of the anti-scour film 6 and the automatic recovery and replacement, which is very convenient and simple.

[0163] In a specific implementation, negative pressure can be manually pumped into the artificial air delivery tube 55, specifically by using an air pump, connecting the air suction port of the air pump to the top opening of the artificial air delivery tube 55, and Figure 6 The gas in the artificial air supply tube 55 and the radial air supply pipeline 8 connected to the artificial air supply tube 55 is drawn out toward the external atmospheric environment.

[0164] 5. For Figures 2 to 11 The radial gas pipeline 8 shown in the figure should ensure that it has airtightness to ensure that the gas flows in the pipeline without leakage. On the other hand, it should also ensure that the sealing piston traction device 7 can slide in the radial gas pipeline 8.

[0165] Figure 7 It is a cross-sectional view of the radial gas pipeline 8 and the sealing piston traction device 7. For the present invention, a pipeline airtight structure is arranged thereon, and the pipeline airtight structure includes a piston 712, a radial gas pipeline 8, a piston connecting slider 71 and a sealing cover 72. The radial gas pipeline 8 is provided with a slit groove 81 at the top, whereby the piston 712 inside the radial gas pipeline 8 can pull the piston connecting slider 71 outside the pipe to move in the slit groove 81 under the push of external pressure (such as gas pressure), thereby realizing the function of the piston 712 driving the piston connecting slider 71 outside the pipe to move.

[0166] In order to avoid air leakage, the piston connection slider 71 is set to be bent and extended to the outside. At this time, the sliding problem of the piston connection slider has been solved. However, in view of the fact that there is a long slit groove 81 on the radial gas transmission pipeline 8, in order to ensure good air tightness. Therefore, a sealing cover 72 with a snap-on protrusion 720 (i.e., an inner concave buckle) is installed on the top of the slit groove 81. One side of the snap-on protrusion 720 of the sealing cover 72 is tightly buckled with the second limiting protrusion 812 on the top of the slit groove 81 to achieve air tightness. The other side of the seal 72 is suspended to form a small gap (i.e., there is a gap between the second limiting protrusion 811), so that the piston connection slider 71 can slide through the gap and ensure air tightness.

[0167] Through the above scheme, the air tightness of the entire structure can be guaranteed, and the piston connecting slider 71 can be ensured to slide in the radial gas pipeline 8, thereby realizing the function of the traction hole 711 driving the anti-scour coating 6 to be deployed around the cylindrical foundation 1.

[0168] Based on the above-mentioned offshore wind power anti-scour device driven by sea waves provided by the present invention, the present invention also provides an implementation method of the offshore wind power anti-scour device driven by sea waves, comprising the following steps:

[0169] Step S1, assembling the barrel foundation 1, the transition section 2 and the tower section 3 as a whole at the coast to obtain a tower body, and then installing an anti-scour mechanism around the tower body, the anti-scour mechanism including a wave gas collection chamber 5, an anti-scour coating 6 with bionic grass 9 (initially stacked), a sealing piston traction device 7, a radial gas pipeline 8 and an annular gas pipeline 11;

[0170] It should be noted that step S1 is performed on the shore.

[0171] Step S2, float the tower body and the installed anti-scour mechanism as a whole, float them to the destination (i.e., the seabed where the offshore wind power foundation needs to be installed), and then sink them as a whole for installation; after the barrel foundation 1 is sunk and installed, a plurality of short piles 4 around the barrel foundation 1 are driven into the seabed 12 in sequence to fix the tail of the radial gas pipeline 8 to prevent it from moving; see Figure 2 shown.

[0172] Step S3, starting the installation construction of the anti-scour coating 6, so that the anti-scour coating 6 is laid around the barrel foundation 1;

[0173] The specific operation is as follows: first, the air hole 10 is controlled to be in a closed state, and then a large amount of high-pressure gas is injected into the artificial gas pipe 55. After the high-pressure gas enters the radial gas pipeline 8, the sealing piston traction device 7 in the radial gas pipeline 8 is pushed to move downward along the radial gas pipeline 8, thereby driving the lower end of the anti-scour coating 6 to slide downward along the radial gas pipeline 8 and unfold, so as to achieve the goal of laying the anti-scour coating 6 around the barrel foundation 1; the final unfolding effect of the anti-scour coating 6 is shown in the figure. Figure 4 shown.

[0174] Step S4, start the wave gas collecting chamber 5, and transport the atmosphere to the surface of the seabed 12 through the wave gas collecting chamber 5 and the radial gas pipeline 8 and the annular gas pipeline 11, thereby interfering with the formation of the vortex A3 in the vortex area above the seabed 12, and blocking the downward jet A2 in front of the tower section 3, so as to avoid the seabed 12 around the cylindrical foundation 1 from being scoured.

[0175] In step S4, the air holes 10 on the radial air supply pipeline 8 and the annular air supply pipeline 11 are in an open state.

[0176] It should be noted that when the wave gas collection bin 5 is in operation (i.e., gas is injected), as the waves continue to fluctuate up and down, the wave gas collection bin 5 in the device of the present invention can convert the wave energy into atmospheric pressure, and the atmospheric pressure can transport a steady stream of atmosphere to the surface of the seabed 12 (i.e., the seabed) through the radial gas pipeline 8. On the surface of the seabed 12 (i.e., the seabed), the gas flows out through the air holes 10 on the radial gas pipeline 8 and the annular gas pipeline 11, and under the disturbance of the bionic grass 9, the gas is dispersed into extremely small bubbles, which will form an upward buoyancy area B1 during the rising process. On the one hand, the upward buoyancy of area B1 can interfere with the formation of the vortex A3 in the vortex area above the seabed 12. On the other hand, it can also prevent the downward jet A2 in front of the tower section 3. Moreover, this area B1 can create an excellent living environment for fish. The water flow in this area is not only rich in oxygen, but also has a complex and diverse flow field. The activities of the fish further disturb the downward jet A2 area and the vortex A3 area, further reducing the risk of the seabed 12 around the barrel foundation 1 being scoured.

[0177] It should be noted that, in the present invention, the anti-scour coating 6 is a passive protection measure; the measure of preventing the jet by forming bubbles through the gas flowing upward from the pores 10 is an active anti-scour measure. In actual applications, it has been tested that the anti-scour coating 6 does not play a good anti-scour role. As time goes by, the anti-scour effect of the anti-scour coating 6 will become smaller and smaller. Therefore, on the basis of the anti-scour coating 6 for passive protection, the present invention further provides a gas pipeline 8 and an annular gas pipeline 11, and prevents the jet by causing gas to flow upward from the pores 10 on the gas pipeline 8 and the annular gas pipeline 11. Through the combination of active and passive measures, the anti-scour effect of the cylindrical foundation and the surrounding seabed can be better achieved.

[0178] In the present invention, in specific implementation, after step S4, the following steps are further included:

[0179] Step S5, as time goes by, when the anti-scour coating 6 is corroded in seawater and needs to be replaced, first, the air holes 10 on the annular air pipeline 11 of the radial air pipeline 8 are controlled to be in a closed state; then, negative pressure is pumped into the artificial air pipeline 55, and under the action of the negative pressure, the sealing piston traction device 7 located at the tail end of the radial air pipeline 8 moves upward along the radial air pipeline 8 toward the sea surface (i.e., away from the seabed 12, the sea surface is above the seabed 12); then, the sealing piston traction device 7 drives the anti-scour coating 6 to shrink and fold as a whole, and finally shrinks into the anti-scour coating storage cabin 60.

[0180] After the anti-scour coating 6 is shrunk and folded as a whole, the anti-scour coating 6 can be replaced manually on the sea surface by staff.

[0181] Compared with the prior art, the offshore wind power anti-scour device and implementation method driven by sea waves provided by the present invention have the following beneficial effects:

[0182] 1. The present invention can effectively prevent the seabed 12 around the barrel foundation 1 from being scoured.

[0183] By analyzing the causes of the formation of horseshoe-shaped scour pits around offshore foundations, the present invention finds that the downward jet A2 in front of the tower and the vortex A3 on the seabed are the main causes of the formation of scour pits. In response to this problem, the present invention proposes a device for offshore wind power scour prevention using wave energy. First, a wave gas collection chamber is proposed, which can convert the up and down oscillating wave energy into atmospheric pressure, and the atmospheric pressure can transport a steady stream of atmosphere to the seabed through a gas pipeline.

[0184] On the seabed, the gas flows out through the pores and is dispersed into extremely small bubbles under the disturbance of the bionic grass 9. The small bubbles will generate an upward buoyancy area B1 during the rising process. The buoyancy of the B1 area can interfere with the formation of the eddy area A3, preventing the A3 eddy from scouring the seabed around the barrel foundation 1. On the other hand, it can also prevent the downward jet A2 in front of the tower section 3, thereby preventing the seabed from being scoured from two aspects.

[0185] The device of the present invention does not require any other energy assistance, and can only rely on the endless wave energy in the ocean to drive the entire device to operate. It is not only environmentally friendly, efficient, and energy-saving, but also has a significant anti-scouring effect. Starting from the essential cause of scouring, active protection is performed by forming an upward buoyancy B1 area.

[0186] 2. The present invention can form an upward buoyancy zone B1 around the wind turbine foundation (i.e., the tower body) through the wave gas collection chamber. The gas in this zone is dispersed into extremely small bubbles through the bionic grass 9. Therefore, an excellent living environment for fish is created for this area. The water flow in this area is not only rich in oxygen, but also has a complex and diverse flow field, which can attract more fish to move around here. The activities of fish further disturb the formation of the downward jet zone A2 and the vortex zone A3, further reducing the risk of the seabed 12 around the barrel foundation 1 being washed away. Therefore, the device embodies the principle of harmonious coexistence and mutual benefit between man and nature.

[0187] That is to say, in the face of the practical problem that the seabed around the offshore wind turbine foundation is easily scoured, the present invention proposes a wave air collection chamber, which can convert the up and down oscillating wave energy into atmospheric pressure, and can transport a steady stream of atmosphere to the seabed, thereby forming an upward buoyancy zone B1. On the one hand, the B1 zone can avoid the formation of vortices; on the other hand, it can also prevent downward jets. Thereby, active anti-scour measures for the basic seabed are realized. And the B1 zone can create a good living environment for fish.

[0188] 3. The present invention also proposes a very convenient bionic grass film installation scheme. In the active anti-scouring scheme, a passive anti-scouring scheme is added. The two schemes work together to improve the anti-scouring effect.

[0189] When installing traditional bionic grass films, maintenance personnel are required to dive to the seabed to install the anti-scour film. If the film is damaged, they have to dive manually to replace the film, which is time-consuming and laborious.

[0190] Therefore, the present invention proposes a very convenient and quick solution for installing and replacing the bionic grass film. When it is necessary to install the anti-scour film 6 on the foundation, first, the anti-scour film 6 is stacked as a whole and installed under the wave gas collecting chamber 5. One end of the anti-scour film 6 is fixed to the tower section 3, and the other end is fixed to the sealing piston traction device 7. High-pressure gas is injected into the radial gas pipeline 8. Under the impetus of the high-pressure gas, the piston 712 in the sealing piston traction device 7 will drive the anti-scour film 6 to unfold in the water under the impetus of external pressure (such as gas pressure), thereby completing the installation of the anti-scour film.

[0191] When the anti-scour film 6 is corroded in seawater and needs to be replaced, it is also very simple, just pump negative pressure into the radial air pipe. Under the action of negative pressure, the sealing piston traction device 7 can move along the radial air pipe 8 toward the sea surface, thereby driving the anti-scour film 6 to shrink and fold as a whole, and then the anti-scour film 6 can be replaced manually on the sea surface.

[0192] Therefore, the present invention faces the problem of difficulty in installing and replacing the traditional bionic grass anti-scour film. A passive anti-scour solution based on atmospheric pressure automatic installation and replacement of the film is proposed. By injecting high-pressure gas into the pipeline, the film is driven to unfold in the water to complete the film installation. When the film needs to be replaced, negative pressure is pumped into the gas pipeline, thereby driving the film to shrink and fold as a whole, and finally it can be replaced manually on the sea surface.

[0193] Therefore, by applying the device of the present invention, multiple technical advantages are included: (1) Workers do not need to dive to the seabed, and can achieve the deployment and installation of the anti-scour coating, or recovery and replacement by simply controlling the air pressure on the sea surface. (2) The anti-scour coating 6 in the device can be automatically deployed for protection and automatically recovered and replaced. (3) There is no need to use other external forces, and the anti-scour coating can be installed only by air pressure, which is energy-saving and efficient. (4) The radial gas pipeline 8 can not only be used for gas transmission, but also as a running guide rail for the anti-scour coating 6, realizing multiple uses of one device.

[0194] 4. The present invention can not only ensure the air tightness of the entire radial gas transmission pipeline 8 in water, but also ensure that the internal piston 712 drives the piston connecting slider 71 to slide outside the pipeline, and finally realizes the function of driving the anti-scour coating 6 to unfold through air pressure.

[0195] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An offshore wind power anti-scour device driven by sea waves, characterized in that: It includes a tower body and an anti-scouring mechanism arranged around the tower body; The tower body includes a barrel foundation (1), a transition section (2) and a tower section (3); A transition section (2) is provided at the top of the barrel foundation (1); A barrel-shaped foundation (1) is provided at the top of the transition section (2); The barrel foundation (1) is buried in the seabed (12), and the top surface of the barrel foundation (1) is flush with the surface of the seabed (12); The anti-scour mechanism comprises a wave air collection chamber (5), a plurality of anti-scour coatings (6), a sealing piston traction device (7), a radial air transmission pipeline (8), an annular air transmission pipeline (11), an air hole (10) and a short pile (4); A plurality of radial gas transmission pipelines (8) are arranged around the outer side of the tower body at equal intervals from top to bottom; An anti-scouring coating (6) is provided between any two adjacent radial gas transmission pipelines (8); The lower end of each radial gas transmission pipeline (8) is fixed on the seabed (12) via a short pile (4); A sea wave gas collecting chamber (5) is fixedly arranged around the outer side of the tower section (3) of the tower body; The bottom opening of the wave gas collecting chamber (5); The upper end of each radial gas transmission pipeline (8) extends upward into the inner cavity of the hollow sea wave gas collection chamber (5); Each radial gas transmission pipeline (8) is provided with a sealing piston traction device (7) which can move up and down; A hollow anti-scour membrane containing cabin (60) with an opening at the bottom is disposed around the bottom of the wave gas collecting cabin (5); An anti-scour film accommodating chamber (60) for accommodating a plurality of anti-scour films (6) in a folded state; The upper end of each anti-scour coating (6) is fixedly connected to the top inner wall of the anti-scour coating storage chamber (60) or the circumferential outer wall of the tower section (3); Two sealing piston traction devices (7) on two adjacent radial gas pipelines 8 are fixedly connected to the two sides of the lower end of each anti-scour coating (6); An annular gas transmission pipeline (11) is disposed around the lower circumferential outer side of the transition section (2) of the tower body; The annular gas transmission pipeline (11) is connected to the lower section of the radial gas transmission pipeline (8) close to the seabed (12); A plurality of air holes (10) are arranged on the lower pipe wall of the radial gas transmission pipe (8) and the pipe wall of the annular gas transmission pipe (11).

2. The offshore wind power anti-scour device driven by sea waves as claimed in claim 1, characterized in that: The upper end pipe wall of the radial gas transmission pipeline (8) is fixedly connected to the surrounding side walls of the cylindrical foundation (1); A plurality of short piles (4) are arranged at equal intervals around the seabed (12) on the outer side of the top of the barrel foundation (1); The lower tail of the radial gas transmission pipeline (8) is in a closed state, and the lower tail of the radial gas transmission pipeline (8) is fixed on the seabed (12) via a short pile (4).

3. The offshore wind power anti-scour device driven by sea waves as claimed in claim 1, characterized in that: The sea wave air collection chamber (5) comprises a hollow air chamber shell (51), an air intake pipe (52) and an artificial air delivery pipe (55); An air storage housing (51) is disposed around the outer side of the tower section (3); The bottom of the gas chamber housing (51) is open; The top of the gas chamber shell (51) is provided with a vertically distributed air inlet pipe (52); The air inlet pipe (52) is communicated with the inner cavity of the air chamber shell (51); The upper end portions of a plurality of radial gas delivery pipelines (8) are disposed in an inner cavity of the gas storage housing (51); There is a gap between the top of the radial gas delivery pipeline (8) and the inner side of the top of the gas chamber shell (51); The upper part of the radial gas delivery pipeline (8) is connected to the lower end of the artificial gas delivery pipe (55); The upper end of the artificial air delivery pipe (55) is open and extends upward from the sea surface to be connected to an external air pump; The top of the gas chamber housing (51) is provided with an air inlet; The air inlet is connected to the lower end of the air inlet pipe (52); The upper end of the air inlet pipe (52) is open and extends upwards out of the sea surface to communicate with the external atmospheric environment.

4. The offshore wind power anti-scour device driven by sea waves as claimed in claim 3, characterized in that: The cross-sectional shape of the gas chamber housing (51) is annular; and / or, The top height of the air inlet pipe (52) is equal to the top height of the artificial air delivery pipe (55); and / or, A first one-way air intake valve (53) is provided on the air intake pipe (52); and / or, A one-way exhaust valve (54) is provided on the radial gas transmission pipeline (8); The connection position between the artificial air supply pipe (55) and the radial air supply pipeline (8) is lower than the installation position of the one-way exhaust valve (54) on the radial air supply pipeline (8); and / or, A second one-way air inlet valve (56) is provided on the artificial air delivery pipe (55); and / or, The top surface of the barrel foundation (1) is flush with the surface of the seabed (12); and / or, The top surface of the wave gas collecting chamber (5) is located at sea level; and / or, The bottom of the sea wave gas collecting bin (5) is open, and the bottom of the sea wave gas collecting bin (5) is always kept submerged in sea water; and / or, A plurality of bionic grasses (9) are evenly arranged on the upper surface of the anti-scour coating (6).

5. The offshore wind power anti-scour device driven by sea waves as claimed in claim 1, characterized in that: A slit groove (81) is provided on one side of each radial gas transmission pipeline (8) and is opened from top to bottom; Each sealing piston traction device (7) comprises: a piston (712) and a piston connecting slider (71); The inner cavity of each radial gas transmission pipeline (8) is sealed with a piston (712); One end of the piston connecting slide block (71) passes through the slit groove (81) on the radial gas transmission pipeline (8) and is fixedly connected to one side of the piston (712); The other end of the piston connecting slide block (71) is fixedly connected to the lower ends of two anti-scouring coatings 6 located on the left and right sides thereof.

6. The offshore wind power anti-scour device driven by sea waves as claimed in claim 5, characterized in that: The piston (712) is cylindrical in shape; and / or, The diameter of the piston (712) is equal to the inner diameter of the radial gas transmission pipeline (8); and / or, An anti-scour coating (6) is provided between two sealing piston traction devices (7) on any two adjacent radial gas transmission pipelines (8), and the two sealing piston traction devices (7) are connected to both sides of the lower end of the anti-scour coating (6); The other end of the piston connecting slide block (71) is provided with two traction holes (711); A tensioning rope is respectively arranged at the corners on both sides of the lower end of each anti-scour coating (6); Two tensioning ropes arranged on both sides of the lower end of each anti-scour coating (6) are connected to two traction holes (711) on opposite sides of two sealing piston traction devices (7) located on both sides of the anti-scour coating (6).

7. The offshore wind power anti-scour device driven by sea waves as claimed in claim 5, characterized in that: A first limiting protrusion (811) and a second limiting protrusion (812) are provided on both sides of the top of the slit groove (81) of the radial gas transmission pipeline (8); The first limiting protrusion (811) and the second limiting protrusion (812) are arranged parallel to each other; One end of the piston connecting slide block (71) successively passes through the gap between the first limiting protrusion (811) and the second limiting protrusion (812) and the slit groove (81) on the radial gas transmission pipeline (8), and is then fixedly connected to one side of the piston (712); A sealing cover (72) is provided above the first limiting protrusion (811) and the second limiting protrusion (812); The sealing cover (72) is engaged with the second limiting protrusion (812); The second limiting protrusion (812) is provided with a slot (8120) at an upper portion of a side away from the first limiting protrusion (811); A locking protrusion (720) is provided on one side of the sealing cover (72) at a position corresponding to the locking groove (8120); The engaging protrusion (720) is engaged with the engaging groove (8120) on the second limiting protrusion (812); The sealing cover (72) has an inner groove opening downward; The first limiting protrusion (811) and the second limiting protrusion (812) are located in the inner groove; A gap is formed between the other side of the sealing cover (72) and the first limiting protrusion (811).

8. The offshore wind power anti-scour device driven by sea waves according to any one of claims 1 to 7, characterized in that: The following gas injection working modes are included in the Hailang gas collection tank: When the seawater level in the sea wave gas collection bin (5) drops, negative pressure is formed in the sea wave gas collection bin (5), and under the action of atmospheric pressure, the first one-way air inlet valve (53) on the air inlet pipe (52) opens, and external gas enters the sea wave gas collection bin (5) through the air inlet pipe (52); When the seawater level in the wave gas collection bin (5) rises, the pressure in the wave gas collection bin (5) rises, squeezing the gas in the wave gas collection bin (5) into the radial gas transmission pipeline (8) through the one-way exhaust valve (54). As a result, as the waves continue to fluctuate, a continuous supply of external gas is delivered to the radial gas transmission pipeline (8); and / or, The following seabed anti-scouring working modes are included around the barrel foundation: When the sea wave gas collection chamber (5) is in operation, when a large amount of gas continuously enters the radial gas transmission pipeline (8), the gas will continuously move toward the seabed (12) along the gas transmission pipeline (8) and the annular gas transmission pipeline (11). When the gas encounters the pore (10), the gas will leak out of the pipeline through the pore (10). Since the bionic grass (9) is arranged around the pore (10), the gas is dispersed into many tiny bubbles under the disturbance of the bionic grass (9). These tiny bubbles rise from the seabed. During the process, an upward buoyancy area B1 is formed. The buoyancy of the area B1, on the one hand, interferes with the formation of an eddy current A3 in the eddy current area above the seabed (12), thereby preventing the eddy current A3 from scouring the seabed (12) around the barrel foundation (1). On the other hand, it prevents the downward jet A2 in front of the tower section (3), thereby preventing the seabed (12) from being scoured from two aspects, effectively preventing the structure of the barrel foundation (1) from being exposed outside the seabed (12), and ensuring the safety and stability of the structure of the barrel foundation (1).

9. A method for implementing an offshore wind power anti-scour device driven by sea waves as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1, assembling the cylindrical foundation (1), the transition section (2) and the tower section (3) as a whole at the coast to obtain a tower body, and then installing an anti-scouring mechanism around the tower body, the anti-scouring mechanism comprising a wave gas collecting chamber (5), an anti-scouring film (6) with bionic grass (9), a sealing piston traction device (7), a radial gas transmission pipeline (8) and an annular gas transmission pipeline (11); Step S2, floating the tower body and the installed anti-scour mechanism as a whole, and after floating to the destination, sinking and installing the whole tower body; after the cylinder foundation (1) is sunk and installed, a plurality of short piles (4) around the cylinder foundation (1) are driven into the seabed (12) in sequence to fix the tail of the radial gas pipeline (8) to prevent it from moving; Step S3, starting the installation and construction of the anti-scour coating (6), so that the anti-scour coating (6) is laid around the barrel foundation (1); Step S4, starting the wave gas collecting chamber (5), and delivering atmospheric air to the surface of the seabed (12) through the wave gas collecting chamber (5) and the radial gas pipeline (8) and the annular gas pipeline (11), thereby interfering with the formation of the vortex A3 in the vortex area above the seabed (12), and preventing the downward jet A2 in front of the tower section (3), thereby preventing the seabed (12) around the cylindrical foundation (1) from being scoured.

10. The implementation method using ocean wave drive as claimed in claim 9, characterized in that: Step S3 specifically includes the following operations: First, the air hole (10) is controlled to be in a closed state, and then a large amount of high-pressure gas is injected into the artificial gas pipe (55). After the high-pressure gas enters the radial gas pipeline (8), it pushes the sealing piston traction device (7) in the radial gas pipeline (8) to move downward along the radial gas pipeline (8), thereby driving the lower end of the anti-scour coating (6) to slide downward along the radial gas pipeline (8) and unfold, thereby achieving the goal of laying the anti-scour coating (6) around the cylindrical foundation (1); In step S4, the air holes (10) on the radial air pipeline (8) and the annular air pipeline (11) are in an open state; After step S4, the method further includes the following steps: Step S5, when the anti-scour coating (6) is corroded in seawater and needs to be replaced, first, the air holes (10) on the radial gas pipeline (8) and the annular gas pipeline (11) are controlled to be in a closed state; then, negative pressure is pumped into the artificial gas pipeline (55), and under the action of the negative pressure, the sealing piston traction device (7) located at the tail of the radial gas pipeline (8) moves upward along the radial gas pipeline (8) toward the sea surface; then, the sealing piston traction device (7) drives the anti-scour coating (6) to shrink and fold as a whole, and finally shrinks into the anti-scour coating storage cabin (60).

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