A floating transport and floating limit device for offshore wind turbine cylinder foundation

Abstract

The invention discloses a floating transport and buoyancy limiting device for an offshore wind power cylindrical foundation, comprising an offshore wind power cylindrical foundation and a floating platform, wherein the offshore wind power cylindrical foundation comprises a single column and a cylindrical skirt, wherein the cylindrical skirt is arranged at the bottom of the single column, and the floating platform comprises a U-shaped module and a K-shaped module; the cylindrical skirt is located at the bottom of a U-shaped opening of the U-shaped module, the K-shaped module is located in the U-shaped opening of the U-shaped module and surrounds the outside of the cylindrical skirt, the U-shaped module and the K-shaped module respectively clamp the offshore wind power cylindrical foundation from both sides of the cylindrical skirt, and the U-shaped module and the K-shaped module are connected into a whole and surround the outer periphery of the cylindrical skirt; the floating transport and buoyancy limiting device for an offshore wind power cylindrical foundation is installed between the offshore wind power cylindrical foundation and the floating platform; the invention limits the mutual movement of the offshore wind power cylindrical foundation and the floating platform in the vertical direction through a limiting device, so as to avoid structural damage caused by periodic up and down movement of the two.

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 cylinder-type foundation floating transportation and floating limit device. Background Art

[0002] As a clean and renewable energy, wind energy has become one of the fastest growing new energy sources in recent years. Unlike land wind, offshore wind is much stronger than land wind. Offshore wind power is far away from people and does not occupy arable land. There is huge room for development. It is fully capable of playing the role of the main force of green renewable electricity. Vigorously developing offshore wind power has great strategic value. Offshore wind power has been developing rapidly around the world in recent years. The most common foundation structures in offshore wind turbine construction are pile foundations, gravity foundations, and barrel foundations, which have developed rapidly in recent years.

[0003] The barrel foundation is widely used in offshore wind farms affected by typhoons and with shallow rock depths due to its advantages such as high rigidity, strong anti-overturning ability and low overall cost. However, the barrel foundation is large in size and heavy in weight, and the bottom barrel skirt compartment plates are all thin-walled structures, which cannot directly bear the heavy weight of the barrel foundation. Therefore, it cannot be placed on a flat barge for direct transportation and can only be transported by floating. Patents such as CN103195080A, CN103758147A, and CN103758148A disclose floating methods for gravity foundations, but the patents are all for gravity wind turbine foundations with closed structures, and the foundation transportation method is direct towing transportation without the help of large auxiliary equipment. The bottom barrel skirt of the barrel foundation is an open structure, and its stability and anti-overturning ability during floating are weaker than those of the closed structure foundation type, so large auxiliary equipment is required for its transportation. Patent CN111907650A discloses an auxiliary floating device for the barrel foundation, and describes the structural type of the floating ship and the connection type between the barrel foundation and the floating ship. However, the floating ship does not limit the relative movement of the barrel foundation upward and the floating platform downward, and fails to achieve the purpose of limiting the relative movement of the floating ship and the multilateral barrel foundation. If there is no restriction in the vertical direction, the offshore wind turbine barrel foundation T will periodically move up and down relative to the floating platform F under the action of waves, eventually causing structural damage.

[0004] Therefore, it is necessary to propose a device that has sufficient ability to resist the buoyancy of waves, so as to achieve the purpose of limiting the position of the offshore wind turbine cylinder foundation under the action of the buoyancy of waves. Summary of the invention

[0005] The purpose of the present invention is to provide a floating limit device for floating transportation of an offshore wind power cylindrical foundation, by which the buoyancy force of waves during the floating transportation of the cylindrical foundation is resisted, and the cylindrical foundation is floated and limited to solve the problem of accidents caused by relative movement between the cylindrical foundation and the floating platform.

[0006] To achieve the above objectives, the technical solution of the present invention is:

[0007] A floating transport and floating limit device for an offshore wind power cylindrical foundation comprises an offshore wind power cylindrical foundation and a floating transport platform, wherein the offshore wind power cylindrical foundation comprises a single column and a cylindrical skirt, wherein the cylindrical skirt is arranged at the bottom of the single column, and the floating transport platform comprises a U-shaped module and a K-shaped module; during the transportation of the offshore wind power cylindrical foundation, the cylindrical skirt is located at the bottom of the U-shaped opening of the U-shaped module, the K-shaped module is located in the U-shaped opening of the U-shaped module and surrounds the outside of the cylindrical skirt, the U-shaped module and the K-shaped module respectively clamp the offshore wind power cylindrical foundation from both sides of the cylindrical skirt, and the U-shaped module and the K-shaped module are connected into a whole and surround the outer periphery of the cylindrical skirt; the floating limit device for floating transport and floating limit device for an offshore wind power cylindrical foundation is installed between the offshore wind power cylindrical foundation and the floating transport platform.

[0008] Furthermore, the floating limit device for floating transportation of the offshore wind power cylindrical foundation is installed at the contact part between the side wall of the cylinder skirt and the floating platform. The floating limit device for floating transportation of the offshore wind power cylindrical foundation includes a limit clamp and a limit frame. The limit clamp is fixed on the side wall of the cylinder skirt, and multiple limit clamps are evenly spaced along the circumferential direction on the side of the cylinder skirt; the limit frame is fixed on the deck of the floating platform, and multiple limit frames are evenly spaced on the deck surface of the U-shaped module and the deck surface of the K-shaped module. The limit clamp extends into the limit frame to complete the limit.

[0009] Furthermore, a plurality of rubber chord guards are evenly spaced apart on the contact surface between the limit clamp and the limit frame, and a plurality of rubber chord guards are evenly spaced apart on the contact surface between the limit frame and the U-shaped module deck surface.

[0010] Furthermore, the limiting clamp includes connecting ribs, a limiting frame, longitudinal stiffening ribs, transverse stiffening ribs and baffles; the connecting ribs include four longitudinal ribs and two transverse ribs, the four longitudinal ribs are vertically arranged in parallel, the two transverse ribs are transversely arranged in parallel, and each transverse rib is cross-connected with the four longitudinal ribs to form a cross shape; one side of the longitudinal ribs and the transverse ribs is connected to the side wall of the tube skirt, and the lower part of the other side is connected to the back of the limiting frame; the limiting frame is fixedly connected to the connecting ribs, and the limiting frame is a rectangular frame formed by four edge plates connected end to end, and two stiffening plates are added in the middle of the square frame.

[0011] Furthermore, a longitudinal stiffening rib is arranged between each longitudinal rib and the top plate of the limit frame. The longitudinal stiffening rib is an L-shaped plate. The vertical plate of the L-shaped plate is connected to the upper part of the longitudinal rib, and the horizontal plate of the L-shaped plate is connected to the top plate of the limit frame.

[0012] Furthermore, a transverse stiffening rib plate is arranged between the transverse ribs and the limit frame; the transverse stiffening rib plates are symmetrically arranged on both sides of the limit frame; the length of the transverse rib is greater than the length of the limit frame, and a transverse stiffening rib plate is arranged between one end of the transverse rib protruding from the limit frame and the side plate of the limit frame.

[0013] Furthermore, the transverse stiffening rib plate is in the shape of a right triangle, one right-angled side of the right triangle is connected to one end of the transverse rib protruding from the limit frame, and the other right-angled side of the right triangle is connected to the side plate of the limit frame.

[0014] Furthermore, a baffle is provided at the bottom end of the side surface of the limiting frame, and a rubber chord guard is placed on the baffle, and the baffle is symmetrically arranged on both sides of the limiting frame.

[0015] Furthermore, the limit frame includes a door-type limit piece and a diagonal brace piece, an upper limit piece is arranged on the upper part of the door-type limit piece, and side limit pieces are arranged on both sides, the top of the side of the side limit piece is connected to one end of the upper limit piece, and a connecting plate is arranged on the bottom of the side limit piece; the connecting plate connects the bottom of the side limit piece with the deck surface of the floating platform; the limit frame passes through the door-type limit piece toward one end of the limit frame, and the door-type limit piece surrounds the periphery of the limit frame to fix the limit frame.

[0016] Furthermore, the diagonal brace member includes a diagonal brace rod, an upper connecting plate located at the top end of the diagonal brace rod, and a lower connecting plate located at the bottom end of the diagonal brace rod; the upper connecting plate and the lower connecting plate are arranged on both sides of the diagonal brace rod, the upper connecting plate is fixed to the side of the side limit member, and the lower connecting plate is fixed to the deck of the floating platform.

[0017] The beneficial effects of the present invention are:

[0018] 1. As a mature foundation type, the barrel foundation is widely used in the offshore wind power field. It is necessary to use floating platforms and other ship facilities to help the barrel foundation float during long-distance transportation. However, under the action of wave buoyancy, the barrel foundation may separate from the floating platform in the vertical direction and move with each other, causing accidents. The present invention proposes a device that has sufficient ability to resist wave buoyancy, which can solve this pain point problem.

[0019] 2. The limiting clamp is fixed on the skirt of the barrel foundation, and the limiting frame is fixed on the deck of the floating platform. By inserting the limiting clamp into the limiting frame, the function of floating and limiting the barrel foundation is realized. The reliability of the present invention is verified through buoyancy force hydrodynamic simulation calculation and structural numerical simulation verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the floating platform UK module clamping the offshore wind turbine cylinder foundation;

[0021] Figure 2 This is a schematic diagram of the axis view of the floating transportation and floatation limit device arrangement for the offshore wind turbine cylinder foundation;

[0022] Figure 3 This is a top view schematic diagram of the arrangement of floating and supporting limit devices for floating transportation of offshore wind turbine cylinder foundation;

[0023] Figure 4 It is a schematic diagram of the limiting clamp ring being fixed on the tube skirt;

[0024] Figure 5 It is a schematic diagram of fixing the limit frame on the floating platform;

[0025] Figure 6 This is a schematic diagram of the limiting clamp and the limiting frame before insertion;

[0026] Figure 7 This is a schematic diagram of the limiting clamp and the limiting frame after being inserted;

[0027] Figure 8 This is a schematic diagram of the structure of the limiting clamp from the left side perspective;

[0028] Fig. 9 is a schematic diagram of the connecting rib structure;

[0029] Fig.10 It is a schematic diagram of the fixed connection between the limit frame and the connecting ribs;

[0030] Fig.11 It is a schematic diagram of the limit frame structure;

[0031] Fig.12 This is a schematic diagram of the structure of the limiting clamp from the right side perspective;

[0032] Fig.13 It is a schematic diagram of the limit frame structure;

[0033] Fig.14 It is a schematic diagram of the structure of a door-type limiter;

[0034] Fig.15 It is a schematic diagram of the diagonal bracing structure;

[0035] Fig.16 Modeling diagram for calculating the buoyancy of offshore wind turbine cylinder foundation in the ocean;

[0036] Fig.17 The calculation results of wave buoyancy of offshore wind turbine cylinder foundation;

[0037] Fig.18 The calculation results of the limited frame structure under the action of buoyancy force;

[0038] Fig.19 The calculation result of the limit clamp structure under the action of buoyancy force;

[0039] Reference numerals:

[0040] Offshore wind power cylindrical foundation T, single column T.1, tube skirt T.2, floating platform F, U-shaped module F.1, K-shaped module F.2, offshore wind power cylindrical foundation floating transportation floating limit device 1, limit clamp 1.1, connecting rib 1.1.1, longitudinal rib 1.1.1.1, transverse rib 1.1.1.2, limit frame 1.1.2, edge plate 1.1.2.1, stiffening plate 1.1.2.2, longitudinal Vertical stiffening ribs 1.1.3, transverse stiffening ribs 1.1.4, baffles 1.1.5, limit frames 1.2, door-type limiters 1.2.1, upper limiters 1.2.1.1, side limiters 1.2.1.2, connecting plates 1.2.1.3, diagonal braces 1.2.2, diagonal braces 1.2.2.1, upper connecting plates 1.2.2.2, lower connecting plates 1.2.2.3, rubber chord guards X. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the invention clearer, the present invention is further described below with reference to the accompanying drawings.

[0042] like Figure 1 and Figure 2 As shown, the offshore wind power cylindrical foundation T includes a single column T.1 and a cylindrical skirt T.2, wherein the cylindrical skirt T.2 is arranged at the bottom of the single column T.1 to provide support for the single column T.1. The floating platform F includes a U-shaped module F.1 and a K-shaped module F.2.

[0043] During the transportation of the offshore wind power cylindrical foundation T, the cylindrical skirt T.2 is located at the bottom of the U-shaped opening of the U-shaped module F.1, the K-shaped module F.2 is located in the U-shaped opening of the U-shaped module F.1 and surrounds the outside of the cylindrical skirt T.2, the width of the K-shaped module F.2 is adapted to the size of the U-shaped opening of the U-shaped module F.1, and the two sides of the K-shaped module F.2 are in contact with the inner side of the U-shaped opening of the U-shaped module F.1, as shown in FIG. Figure 2 As shown, the U-shaped module F.1 and the K-shaped module F.2 clamp the offshore wind power cylindrical foundation from both sides of the tube skirt T.2 respectively, and finally form a whole. The U-shaped module F.1 and the K-shaped module F.2 are assembled into a whole and surround the outer periphery of the tube skirt T.2.

[0044] The offshore wind power cylindrical foundation T has the ability to float independently. After being clamped by the floating platform F to become a whole, although the mutual movement in the horizontal direction is restricted, there is still mutual movement between the offshore wind power cylindrical foundation T and the floating platform F in the vertical direction. If it is not restricted in the vertical direction, under the action of waves, the offshore wind power cylindrical foundation T will periodically move up and down relative to the floating platform F, eventually causing structural damage.

[0045] Figure 2 and Figure 3 The figure shows an offshore wind power cylindrical foundation floating transportation float limit device 1, which is installed between the offshore wind power cylindrical foundation T and the floating platform F to limit the relative movement between the offshore wind power cylindrical foundation T and the floating platform F.

[0046] Figure 3 The floating transport and buoyancy limiting device 1 for the offshore wind power cylindrical foundation is installed at the position where the offshore wind power cylindrical foundation T is closest to the floating platform F.

[0047] like Figure 4-Figure 7 As shown, the floating and supporting limit device 1 for floating transportation of an offshore wind power cylindrical foundation comprises a limit clamp ring 1.1 and a limit frame 1.2. Figure 4 The limit clamp ring 1.1 is fixed on the side of the tube skirt T.2, and a plurality of limit clamp rings 1.1 are evenly spaced along the circumferential direction on the side of the tube skirt T.2. Figure 5 The limit frames 1.2 shown are fixed on the deck of the floating platform F. The floating platform F includes a deck surface of a U-shaped module F.1 and a deck surface of a K-shaped module F.2 on which a plurality of limit frames 1.2 are evenly spaced.

[0048] The components of the limit clamp ring 1.1 and the limit frame 1.2 are welded, and the limit clamp ring 1.1 and the tube skirt wall, and the limit frame 1.2 and the floating platform F are also welded.

[0049] like Figure 6 and Figure 7 As shown, the limit clamp 1.1 moves forward with the offshore wind power cylindrical foundation T, aligns with the limit frame 1.2 and then penetrates into the limit frame 1.2 to limit the offshore wind power cylindrical foundation T. A plurality of rubber chords X are evenly spaced on the contact surface of the limit clamp 1.1 and the limit frame 1.2 to buffer the force between the limit clamp 1.1 and the limit frame 1.2.

[0050] like Figure 8 As shown, the limiting clamp 1.1 comprises connecting ribs 1.1.1, a limiting frame 1.1.2, longitudinal stiffening ribs 1.1.3, transverse stiffening ribs 1.1.4 and baffles 1.1.5.

[0051] like Fig. 9 As shown, the connecting ribs 1.1.1 include four longitudinal ribs 1.1.1.1 and two transverse ribs 1.1.1.2. The four longitudinal ribs 1.1.1.1 are arranged vertically and in parallel, and the two transverse ribs 1.1.1.2 are arranged transversely and in parallel. Each transverse rib 1.1.1.2 is vertically connected to the four longitudinal ribs 1.1.1.1 to form a cross shape. The longitudinal ribs 1.1.1.1 and the transverse ribs 1.1.1.2 are completely fitted to the side wall surface of the tube skirt T.2.

[0052] like Fig.10 and Fig.11 As shown, the limit frame 1.1.2 is fixedly connected to the connecting rib 1.1.1. The limit frame 1.1.2 is a rectangular frame formed by four edge plates 1.1.2.1 connected end to end, and two stiffening plates 1.1.2.2 are added in the middle of the square frame. The two stiffening plates 1.1.2.2 are arranged at intervals to improve the rigidity and strength of the limit frame 1.1.2.

[0053] One side of the longitudinal ribs 1.1.1.1 and the transverse ribs 1.1.1.2 are completely in contact with the side wall of the tube skirt T.2, and the lower part of the other side of the longitudinal ribs 1.1.1.1 and the transverse ribs 1.1.1.2 are connected to the back of the limit frame 1.1.2.

[0054] like Figure 8 and Fig.12 As shown, a longitudinal stiffening rib 1.1.3 is provided between each longitudinal rib 1.1.1.1 and the top plate of the limit frame 1.1.2. In a specific embodiment, the longitudinal stiffening rib 1.1.3 is an L-shaped plate, wherein the vertical plate included in the L-shaped plate is connected to the upper part of the longitudinal rib 1.1.1.1, and the horizontal plate included in the L-shaped plate is connected to the top plate of the limit frame 1.1.2.

[0055] A transverse stiffening rib plate 1.1.4 is arranged between each transverse rib 1.1.1.2 and the limit frame 1.1.2. The transverse stiffening rib plates 1.1.4 are symmetrically arranged on both sides of the limit frame 1.1.2. The length of the transverse rib 1.1.1.2 is greater than the length of the limit frame 1.1.2, so that the two ends of the transverse rib 1.1.1.2 protrude from the two ends of the limit frame 1.1.2, and a transverse stiffening rib plate 1.1.4 is arranged between one end of the transverse rib 1.1.1.2 protruding from the limit frame 1.1.2 and the side plate of the limit frame 1.1.2, and the transverse stiffening rib plate 1.1.4 is in the shape of a right-angled triangle, one right-angled side of the right-angled triangle is connected to one end of the transverse rib 1.1.1.2 protruding from the limit frame 1.1.2, and the other right-angled side of the right-angled triangle is connected to the side plate of the limit frame 1.1.2.

[0056] A baffle 1.1.5 is provided at the bottom end of the side of the limiting frame 1.1.2 so that the rubber chord guard X can be placed on the baffle 1.1.5. The baffles 1.1.5 are also symmetrically arranged on both sides of the limiting frame 1.1.2.

[0057] In the present invention, a plurality of rubber chords X are arranged at intervals on the upper surface of the top plate and the lower surface of the bottom plate of the limit frame 1.1.2. The lower surface of the bottom plate of the limit frame 1.1.2 is the contact surface between the bottom plate of the limit frame 1.1.2 and the floating platform F. The rubber chords X on the upper surface of the top plate of the limit frame 1.1.2 are used to buffer the force between the limit clamp 1.1 and the limit frame 1.2; the rubber chords X on the lower surface of the bottom plate of the limit frame 1.1.2 are used to buffer the force between the limit frame 1.1.2 and the floating platform F.

[0058] like Fig.13 As shown, the limiting frame 1.2 includes a door-type limiting member 1.2.1 and a diagonal bracing member 1.2.2.

[0059] like Fig.14 As shown, an upper stopper 1.2.1.1 is provided on the upper part of the door-type stopper 1.2.1, and side stoppers 1.2.1.2 are provided on both sides. The top of the side of the side stopper 1.2.1.2 is connected to one end of the upper stopper 1.2.1.1, and a connecting plate 1.2.1.3 is provided on the bottom of the side stopper 1.2.1.2. The upper stopper 1.2.1.1 and the side stopper 1.2.1.2 can be composed of a group of square steels, for example, and the number of a group of square steels can be 2. The connecting plate 1.2.1.3 is used to connect the bottom of the side stopper 1.2.1.2 and the deck of the floating platform F. The connecting plate 1.2.1.3 can be welded to the clamping plate of the floating platform F, or fixed to the clamping plate by bolts.

[0060] like Fig.15 As shown, the diagonal brace 1.2.2 includes a diagonal brace 1.2.2.1, an upper connecting plate 1.2.2.2 located at the top of the diagonal brace 1.2.2.1, and a lower connecting plate 1.2.2.3 located at the bottom of the diagonal brace 1.2.2.1. The upper connecting plate 1.2.2.2 and the lower connecting plate 1.2.2.3 are arranged on both sides of the diagonal brace 1.2.2.1, the upper connecting plate 1.2.2.2 is fixed to the side of the side stopper 1.2.1.2, and the lower connecting plate 1.2.2.3 is fixed to the deck of the floating platform F.

[0061] In the present invention, the limiting clamp 1.1 moves forward with the offshore wind power cylindrical foundation T, and the limiting frame 1.1.2 passes into the door-type limiting piece 1.2.1 toward one end of the limiting frame 1.2, and the door-type limiting piece 1.2.1 surrounds the periphery of the limiting frame 1.1.2 to fix the limiting frame 1.1.2, thereby realizing the limiting of the offshore wind power cylindrical foundation T.

[0062] After the offshore wind power cylindrical foundation T is transported to the destination, the connecting ribs 1.1.1 are cut to separate the limiting clamp 1.1 from the offshore wind power cylindrical foundation T, and the offshore wind power cylindrical foundation T can complete the subsequent sinking construction.

[0063] In order to verify the effectiveness of the floating and limiting device 1 for floating transportation of offshore wind power cylinder foundation, relevant calculation verification was carried out.

[0064] like Fig.16 and Fig.17 As shown in the figure, the wave buoyancy of the offshore wind turbine cylindrical foundation T in a marine environment with a wave height of 1m and a wave period of 9s was calculated, and the wave buoyancy was 248t.

[0065] Fig.18 The figure shows the structural verification of the limit frame 1.2 under the action of wave buoyancy. The calculation results show that the structural stress is 117.5 MPa, which is within the allowable stress range of 355 MPa.

[0066] Fig.19 The figure shows the structural check of the limit clamp 1.1 under the action of wave buoyancy. The calculation results show that the structural stress is 171.2 MPa, which is also within the allowable stress range of 355 MPa.

[0067] Therefore, the design of the floating and limiting device 1 for floating transportation of the offshore wind power cylinder-type foundation is effective and reliable.

[0068] Finally, it should be noted that the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The above description is only the preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions recorded in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A floating and limiting device for floating transportation of an offshore wind power cylindrical foundation, wherein the floating and limiting device (1) is installed between an offshore wind power cylindrical foundation (T) and a floating platform (F), wherein the offshore wind power cylindrical foundation (T) comprises a single column (T.1) and a cylindrical skirt (T.2), wherein the cylindrical skirt (T.2) is arranged at the bottom of the single column (T.1), and wherein the floating platform (F) comprises a U-shaped module (F.1) and a K-shaped module (F.2); T) During transportation, the tube skirt (T.2) is located at the bottom of the U-shaped opening of the U-shaped module (F.1), the K-shaped module (F.2) is located in the U-shaped opening of the U-shaped module (F.1) and surrounds the outside of the tube skirt (T.2), the U-shaped module (F.1) and the K-shaped module (F.2) respectively clamp the offshore wind power tube foundation from both sides of the tube skirt (T.2), and the U-shaped module (F.1) and the K-shaped module (F.2) are connected into a whole and surround the outer periphery of the tube skirt (T.2); The offshore wind power cylindrical foundation floating transportation floating limit device (1) is installed at the contact portion between the side wall of the cylinder skirt (T.2) and the floating platform (F), and the offshore wind power cylindrical foundation floating transportation floating limit device (1) comprises a limit clamp (1.1) and a limit frame (1.2), the limit clamp (1.1) is fixed on the side wall of the cylinder skirt (T.2), and a plurality of limit clamps (1.1) are evenly spaced along the circumferential direction on the side of the cylinder skirt (T.2); the limit frame (1.2) is fixed on the deck of the floating platform (F), and a plurality of limit frames (1.2) are evenly spaced on the deck surface of the U-shaped module (F.1) and the deck surface of the K-shaped module (F.2), and the limit clamp (1.1) extends into the limit frame (1.2) for limiting; The limiting clamp (1.1) comprises a connecting rib (1.1.1), a limiting frame (1.1.2), a longitudinal stiffening rib plate (1.1.3), a transverse stiffening rib plate (1.1.4) and a baffle (1.1.5); the connecting rib (1.1.1) comprises four longitudinal ribs ( 1.1.1.1) and two transverse ribs (1.1.1.2), four longitudinal ribs (1.1.1.1) are arranged vertically and in parallel, two transverse ribs (1.1.1.2) are arranged transversely and in parallel, and each transverse rib (1.1.1.2) is cross-connected with the four longitudinal ribs (1.1.1.1) to form a cross shape; one side of the longitudinal ribs (1.1.1.1) and the transverse ribs (1.1.1.2) is connected to the side wall of the tube skirt (T.2), and the lower part of the other side is connected to the back of the limit frame (1.1.2); the limit frame (1.1.2) is fixedly connected to the connecting ribs (1.1.1), and the limit frame (1.1.2) is a rectangular frame formed by four edge plates (1.1.2.1) connected end to end, and two stiffening plates (1.1.2.2) are added in the middle of the square frame.

2. According to claim 1, a floating and limiting device for floating transportation of an offshore wind power cylindrical foundation, characterized in that: A plurality of rubber chords (X) are evenly spaced apart on the contact surface between the limit clamp (1.1) and the limit frame (1.2), and a plurality of rubber chords (X) are evenly spaced apart on the contact surface between the limit frame (1.1.2) and the deck surface of the U-shaped module (F.1).

3. According to claim 1, a floating and limiting device for floating transportation of an offshore wind power cylindrical foundation is characterized in that: A longitudinal stiffening rib plate (1.1.3) is arranged between each longitudinal rib (1.1.1.1) and the top plate of the limiting frame (1.1.2); the longitudinal stiffening rib plate (1.1.3) is an L-shaped plate, the vertical plate of the L-shaped plate is connected to the upper part of the longitudinal rib (1.1.1.1), and the horizontal plate of the L-shaped plate is connected to the top plate of the limiting frame (1.1.2).

4. According to claim 1, a floating and limiting device for floating transportation of an offshore wind power cylindrical foundation is characterized by: A transverse stiffening rib plate (1.1.4) is arranged between the transverse rib (1.1.1.2) and the limiting frame (1.1.2); the transverse stiffening rib plates (1.1.4) are symmetrically arranged on both sides of the limiting frame (1.1.2); the length of the transverse rib (1.1.1.2) is greater than the length of the limiting frame (1.1.2); a transverse stiffening rib plate (1.1.4) is arranged between one end of the transverse rib (1.1.1.2) protruding from the limiting frame (1.1.2) and a side plate of the limiting frame (1.1.2).

5. According to claim 1, a floating and limiting device for floating transportation of an offshore wind power cylindrical foundation is characterized in that: The transverse stiffening rib plate (1.1.4) is in the shape of a right triangle, one right-angled side of the right triangle is connected to an end of the transverse rib (1.1.1.2) protruding from the limit frame (1.1.2), and the other right-angled side of the right triangle is connected to the side plate of the limit frame (1.1.2).

6. The floating and limiting device for floating transportation of an offshore wind power cylindrical foundation according to claim 1 is characterized by: A baffle (1.1.5) is provided at the bottom end of the side of the limiting frame (1.1.2), a rubber chord (X) is placed on the baffle (1.1.5), and the baffles (1.1.5) are symmetrically arranged on both sides of the limiting frame (1.1.2).

7. The floating and limiting device for floating transportation of an offshore wind power cylindrical foundation according to claim 1 is characterized by: The limiting frame (1.2) comprises a door-type limiting member (1.2.1) and a diagonal bracing member (1.2.2); an upper limiting member (1.2.1.1) is arranged on the upper part of the door-type limiting member (1.2.1), and side limiting members (1.2.1.2) are arranged on both sides; the top of the side of the side limiting member (1.2.1.2) is connected to one end of the upper limiting member (1.2.1.1), and the bottom of the side limiting member (1.2.1.2) is connected to the upper limiting member (1.2.1.1). A connecting plate (1.2.1.3) is provided on the surface; the connecting plate (1.2.1.3) connects the bottom of the side limiter (1.2.1.2) and the deck surface of the floating platform (F); the limit frame (1.1.2) is inserted into the door-type limiter (1.2.1) at one end facing the limit frame (1.2), and the door-type limiter (1.2.1) surrounds the outer periphery of the limit frame (1.1.2) to fix the limit frame (1.1.2).

8. The floating and limiting device for floating transportation of an offshore wind power cylindrical foundation according to claim 7 is characterized by: The diagonal bracing member (1.2.2) comprises a diagonal bracing rod (1.2.2.1), an upper connecting plate (1.2.2.2) located at the top end of the diagonal bracing rod (1.2.2.1), and a lower connecting plate (1.2.2.3) located at the bottom end of the diagonal bracing rod (1.2.2.1); the upper connecting plate (1.2.2.2) and the lower connecting plate (1.2.2.3) are arranged on both sides of the diagonal bracing rod (1.2.2.1), the upper connecting plate (1.2.2.2) is fixed to the side of the side limiting member (1.2.1.2), and the lower connecting plate (1.2.2.3) is fixed to the deck of the floating platform (F).

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