Method for transporting offshore wind steel tower by semi-submersible vessel and the vessel

Abstract

The application provides a kind of offshore wind power steel structure tower's semi-submersible transport method, comprising the following steps: S1, after tower production is completed, the both ends of tower are sealed, and pull hook is set;S2, slide is built on the coast, and parking point is set;S3, tower is transported to port, and transport car stops at parking point;S4, tower is moved to slide, and steel cable is used to connect the pull hook of the end of tower and tugboat;S5, the connected tower is dragged to sea surface by the slow movement of tugboat;S6, the tower is transported to the machine site by tugboat;Through the above steps, the tower of offshore wind power is transported to the machine site.The application eliminates the process of tower loading, adopts semi-submersible transport mode, increases the efficiency and convenience of tower transportation;The sealing of both ends of tower does not need to set other structures on tower for cooperation, so as not to affect the structural integrity of tower.

Description

Technical Field

[0001] This invention relates to the field of tower transportation technology, specifically to a semi-submersible transportation method and transportation vehicle for offshore wind power steel structure towers. Background Technology

[0002] The tower is an important component of a wind power generation system. It is generally made of steel and mainly serves to support the turbine while absorbing its vibration. It usually needs to be manufactured in a factory on land first, and then transported to the pre-set location of the wind power generation system by transport ships for installation. After traditional towers are collected at the port, they usually need to be transferred to 5,000-ton transport vessels and transport equipment, where they are secured and reinforced and anti-deformation measures are taken before shipment. Therefore, the efficiency of tower transportation at sea is affected by the loading speed, the securing speed, the construction speed of protective measures, the transfer speed at the port, and the number of transport vessels.

[0003] During the actual transportation process, the towers were difficult to transport to the port and then transferred to transport ships, which took a lot of time and seriously delayed the construction schedule. In addition, the availability of port berths and transport ship resources were very tight, which directly affected the construction progress. Summary of the Invention

[0004] The main objective of this invention is to provide a semi-submersible transportation method and transportation vehicle for offshore wind turbine steel structure towers, thereby solving the problems of difficult and inefficient transportation of offshore wind turbine towers.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A semi-submersible transportation method for offshore wind turbine steel structure towers includes the following steps: S1. After the tower is manufactured, seal both ends of the tower and install pull hooks; S2. Construct a landslide on the coast and set up a parking area; S3. Transport the tower to the port, and the transport vehicle stops at the parking point; S4. Move the tower to the landslide site and use steel cables to connect the towing wheel and the hook at the end of the tower; S5. The tugboat slowly moves to drag the connected tower to the sea surface; S6. The tugboat transports the tower to the machine location; The above steps are used to transport the offshore wind turbine towers to the turbine location.

[0006] In the preferred embodiment, lubricating oil is applied to the landslide area; S5 also includes: S511. The tugboat slowly moves a distance and tows the connected tower to the sea surface; S512. Move another tower to the landslide site and use steel cables to connect this tower to the hook at the end of the previous tower. S513, the tugboat slowly moves a distance and drags the newly connected tower to the sea surface; S514. Repeat steps S512 and S513 until the specified quantity is reached; or S521. Move another tower to the landslide site and place it alongside the already placed tower. Connect the two ends of this tower to the two ends of the adjacent tower with steel cables. Use steel cables to connect the towing vessel and the hook at the end of the tower; S522, Repeat S521 until the specified quantity is reached; S523, The tugboat moves slowly, dragging the connected tower to the sea surface; In steps S4, S521, and S522, first plan the number and position of the towers placed side by side, and then connect them sequentially from one side to the other; or first connect the towers in the middle position, and then connect them one by one on both sides of the middle tower.

[0007] A semi-submersible transport vehicle for offshore wind turbine steel structure towers includes a sealing sleeve, with a hook on one side of the sealing sleeve; The other side of the sealing sleeve is used to connect the tower tube, and the sealing sleeve is located at the end of the tower tube; Hook-and-loop connectors are used to connect transport ships via steel cables; The connection between the sealing sleeve and the tower is sealed.

[0008] In a preferred embodiment, the sealing sleeve includes a connecting sleeve, one side of which is fitted onto the end of the tower, and the other side of which is provided with a connecting seat. The inner side of the connecting sleeve is adapted to the end of the tower, and the end of the tower extends into the interior of the connecting sleeve; A sealing gasket is provided between the sealing groove and the tower cylinder; The connector is tapered, and the diameter of the end face of the connector away from the connecting sleeve is smaller than the area of ​​the end face of the other end of the connector.

[0009] In the preferred embodiment, the tower end is provided with a flange, the connecting sleeve is provided with a fixing seat, and the fixing seat is provided with a connector; A gap is provided between the outer circumferential surfaces of the connecting sleeve and the fixed seat, the gap being adapted to the flange, with the flange located within the gap; The connector includes multiple sliders that are slidably connected to the fixed base, and each slider is equipped with a stabilizing block; The stabilizing block slides between a first position and a second position following the slider. In the first position, the stabilizing block is located inside the fully fixed seat; in the second position, part of the stabilizing block is located inside the fixed seat, and the other part is located on the end face of the flange. The fixed base is equipped with a first spring, which abuts against the slider. The first spring is located on the side of the slider that is closer to the flange. The fixed base has a sliding connection with a push block, which is frustum-shaped. The slider contacts the side of the push block, and the contact surface between the slider and the push block is adapted to the side of the push block. The hook is slidably connected to the sealing sleeve, and the small end of the push block is connected to the hook. The small end of the push block is provided with a second spring.

[0010] In a preferred embodiment, the hook component includes a hook located outside the sealing sleeve; The hook is equipped with a connecting rod that extends into the interior of the sealing sleeve. The end of the connecting rod away from the hook is fixedly connected to the push block. The sealing sleeve is provided with a limiting groove, and the connecting rod is provided with a limiting block, which is located inside the limiting groove. The sealing sleeve is provided with a first positioning hole and a second positioning hole, and the limiting block is provided with an inner positioning hole; The limiting block slides along the limiting groove between the first and second extreme positions. At the first extreme position, the inner positioning hole is coaxial with the first positioning hole; at the second extreme position, the inner positioning hole is coaxial with the second positioning hole.

[0011] In a preferred embodiment, a positioning rod is also provided. When the inner positioning hole is coaxial with the first positioning hole or the inner positioning hole is coaxial with the second positioning hole, the positioning rod is inserted into the positioning hole through the first positioning hole or the second positioning hole for positioning. One end of the positioning rod is provided with a rotating groove, and a limit rod is rotatably connected in the rotating groove through a positioning shaft; The other end of the positioning rod is equipped with a fixing rod, which is perpendicular to the positioning rod.

[0012] In the preferred embodiment, the tower end is provided with a flange, and the sealing sleeve is provided with multiple through holes. The positions of the through holes correspond to the connection holes of the flange, and the flange and the sealing sleeve are connected by a first bolt and a nut. A rubber sealing gasket is provided between the first bolt and the flange and sealing sleeve; and / or The tower has multiple pull ropes on its side, with both ends of the pull ropes connected to the sealing sleeves to tighten the sealing sleeves at both ends of the tower. The side of the sealing sleeve is provided with multiple retaining rings, and the pull rope is connected to the sealing sleeve through the retaining rings.

[0013] In the preferred embodiment, the sealing sleeve is provided with a buoyancy structure; the number of buoyancy structures is two. The buoyancy structure includes multiple fixed blocks, with a movable rod between two adjacent fixed blocks. The end of the movable rod is provided with a fixed shaft, and the movable rod is rotatably connected to the fixed block through the fixed shaft. The movable rod and the fixed block are provided with insertion holes, and a rod is inserted into the insertion holes; the rod passes through the insertion holes in both the movable rod and the fixed block. The end of the movable rod is provided with a connecting ring, and the connecting ring has a connecting hole inside; The movable rod has multiple threaded holes inside; The movable rod is connected to a floating plate, and the floating plate has mounting holes through which the movable rod passes. The floating plate has multiple fixing holes, and the second bolt passes through the fixing holes and is threaded into the threaded holes; The movable rod is a square rod, and the mounting hole is a square hole that is adapted to the movable rod.

[0014] In the preferred embodiment, the sealing sleeve is equipped with multiple secondary connection mechanisms for reinforcing the connection between different tower sections; The secondary connection mechanism includes multiple fixed blocks, with a movable rod between two adjacent fixed blocks. The end of the movable rod is provided with a fixed shaft, and the movable rod is rotatably connected to the fixed block through the fixed shaft. The movable rod and the fixed block are provided with insertion holes, and a rod is inserted into the insertion holes; the rod passes through the insertion holes in both the movable rod and the fixed block. The end of the movable rod is provided with a connecting ring, and the connecting ring has a connecting hole inside; A connecting plate is provided between the connecting rings connecting different tower sections, and the connecting plate is provided with a connecting post, which is inserted into the connecting hole; The hooks connecting different tower sections are connected by steel cables or ties.

[0015] This invention provides a semi-submersible transportation method and vehicle for offshore wind turbine steel structure towers. By adopting the above solution, the following beneficial effects are achieved: 1. The process of loading the tower onto a ship is eliminated, and a semi-submersible transportation method is used, which increases the efficiency and convenience of tower transportation.

[0016] 2. The seals at both ends of the tower do not require any other structures on the tower for coordination, thus not affecting the structural integrity of the tower. Furthermore, the seals are easy to connect and disassemble, and the connection is stable.

[0017] 3. It can be combined with multiple towers for transportation in various ways to adapt to different transportation needs and make transportation more convenient.

[0018] 4. During sea transport, it not only ensures the buoyancy of the tower, but also prevents the tower from rotating randomly during transport, thus ensuring stability during the transport process.

[0019] 5. It can be further connected and reinforced during multi-tower transportation, ensuring stability during the transportation process.

[0020] 6. After being transported to the machine site, it facilitates hoisting and construction, and is easy to disassemble after hoisting, thus increasing hoisting efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of a semi-submersible transport vehicle connected to a steel structure tower for offshore wind power according to the present invention. Figure 2 This is a top view of the semi-submersible transport vehicle connected to the offshore wind power steel structure tower of the present invention. Figure 3 This is a cross-sectional view of the semi-submersible transport vehicle connected to the offshore wind power steel structure tower of the present invention. Figure 4 This is an enlarged structural schematic diagram of the semi-submersible transport vehicle connection of a steel structure tower for offshore wind power according to the present invention. Figure 5 This is a structural schematic diagram of a semi-submersible transport vehicle for an offshore wind power steel structure tower according to the present invention; Figure 6 This is a schematic diagram of an embodiment of a semi-submersible transport vehicle for an offshore wind power steel structure tower according to the present invention; Figure 7 This is a structural schematic diagram of the hook component of the present invention; Figure 8 This is a schematic diagram of the positioning rod of the present invention; Figure 9 This is a schematic diagram of an embodiment of a semi-submersible transport vehicle for an offshore wind power steel structure tower according to the present invention; Figure 10 This is a schematic diagram of an embodiment of a semi-submersible transport vehicle for an offshore wind power steel structure tower according to the present invention; Figure 11 This is a schematic diagram of the semi-submersible transportation method for offshore wind power steel structure towers according to the present invention during transportation; Figure 12 This is a schematic diagram of the semi-submersible transportation method for offshore wind power steel structure towers according to the present invention.

[0022] Figure 13 This is a schematic diagram of a semi-submersible transportation method for offshore wind power steel structure towers according to the present invention during port connection.

[0023] In the picture: Tower 1, Flange 101, Sealing Sleeve 2, Connecting Sleeve 201, Connecting Seat 202, Fixing Seat 203, First Bolt 204, Hook 3, Hook 301, Connecting Rod 302, Limiting Groove 303, Limiting Block 304, First Positioning Hole 305, Second Positioning Hole 306, Inner Positioning Hole 307, Positioning Rod 351, Rotating Groove 352, Limiting Rod 353, Positioning Shaft 354, Fixing Rod 355, Connecting Part 4. Slider 401, stabilizing block 402, first spring 403, push block 404, second spring 405, pull rope 5, buoyancy mechanism 6, fixing block 601, movable rod 602, fixed shaft 603, insertion hole 604, threaded hole 605, connecting ring 606, connecting hole 607, floating plate 608, mounting hole 609, fixing hole 610, insertion rod 611, second bolt 612, steel cable 7, pull cable 701, connecting plate 8. Detailed Implementation

[0024] Example 1: like Figure 13 As shown, a semi-submersible transportation method for offshore wind turbine steel structure towers includes the following steps: S1. After the tower is manufactured, both ends of the tower are sealed and hooks are installed. This process can be completed at the tower processing site, eliminating the need for connection and installation at the port, thus increasing the efficiency of port transportation.

[0025] S2. Construct a landslide along the coast and set up a parking area; the landslide can be constructed as follows: Figure 13 As shown, the top surface of the landslide is provided with an arc-shaped groove, which is used to position the tower and guide the direction of the tower's slide down, so as to prevent the tower from tilting.

[0026] S3. Transport the tower to the port, and the transport vehicle stops at the parking point; once the vehicle carrying the tower arrives at the parking point, the tower can be directly unloaded onto the landslide without multiple transports and transfers, which is more efficient; the specific unloading method adopts the existing interface, such as transporting by tower crane or sliding down by guide rollers.

[0027] S4. Move the tower to the landslide site and use steel cables to connect the tow wheel and the hook at the end of the tower. Both the hook and the steel cable can be made from existing prefabricated components that meet the requirements and strength specifications. After the tow wheel and the tower reach the expected position, they can be directly connected by the hook and the steel cable. The operation is simple and efficient.

[0028] S5. The tugboat slowly moves to tow the connected tower to the sea surface. Since both ends of the tower are sealed and the interior is sealed with cavities, the tower has sufficient buoyancy after reaching the sea surface and can float on the sea surface to be transported away by the tugboat. If necessary, buoyancy mechanisms 6 are set at both ends of the tower to increase buoyancy, further ensure transportation stability, and prevent the tower from rotating randomly during transportation.

[0029] S6. The tugboat transports the tower to the machine location; The above steps are simple to operate, more efficient, and more conducive to quickly transporting offshore wind turbine towers to designated locations.

[0030] In the preferred embodiment, lubricating oil is applied at the landslide site to reduce the friction between the tower and the landslide, making it easier for the tower to slide down. The amount of lubricating oil used is selected according to the actual situation. S5 also includes: S511. The tugboat slowly moves a distance and tows the connected tower to the sea surface; S512. Move another tower to the landslide site and use steel cables to connect this tower to the hook at the end of the previous tower. S513, the tugboat slowly moves a distance and drags the newly connected tower to the sea surface; S514. Repeat steps S512 and S513 until the specified quantity is reached; Through the above steps, the tower can be transformed into... Figure 12 The method of transportation allows for the transport of multiple tower sections at once, increasing transportation efficiency.

[0031] S521. Move another tower to the landslide site and place it alongside the already placed tower. Connect the two ends of this tower to the two ends of the adjacent tower with steel cables. Use steel cables to connect the towing vessel and the hook at the end of the tower; S522, Repeat S521 until the specified quantity is reached; S523, The tugboat moves slowly, dragging the connected tower to the sea surface; In steps S4, S521, and S522, first plan the number and position of the towers placed side by side, and then connect them sequentially from one side to the other; or first connect the towers in the middle position, and then connect them one by one on both sides of the middle tower, depending on the actual connection situation.

[0032] Through the above steps, the tower can be transformed into... Figure 11 The method of transportation allows for the transport of multiple tower sections at once, increasing transportation efficiency.

[0033] Example 2: like Figure 1 , 2 As shown in Figure 3, a semi-submersible transport vehicle for offshore wind power steel structure towers includes a sealing sleeve 2, and a hook 3 is provided on one side of the sealing sleeve 2. The other side of the sealing sleeve 2 is used to connect the tower 1, and the sealing sleeve 2 is located at the end of the tower 1; the tower 1 refers to the offshore wind turbine tower that needs to be transported. Hook 3 is used to connect the transport ship via steel cable 7; The connection between the sealing sleeve 2 and the tower 1 is sealed to prevent water from seeping in.

[0034] After the tower cylinder 1 is processed, two sealing sleeves 2 are connected to both ends of the tower cylinder 1 to seal the tower cylinder 1, so that the inside of the tower cylinder 1 is in a sealed state, which facilitates subsequent sea transportation; and after transportation to the machine point, the crane can be used to hold the hook part 3 directly, and then one end of the tower cylinder 1 is pulled up to make the tower cylinder 1 vertical, so as to facilitate the hoisting of the tower cylinder 1 at the work site, ensuring the efficiency of transportation and hoisting.

[0035] After sealing, the tower 1 is transported to the seaside using existing transportation methods. Then, the steel cable and hook of the tugboat are connected to the hook 3. Finally, the tower 1 is pulled to the machine point by the tugboat. The operation is simple and convenient, which increases the efficiency and convenience of transportation. It also eliminates the need for large transport ships, thus saving costs.

[0036] In a further embodiment, such as Figure 1 , 2 As shown in Figures 3, 4 and 5, the sealing sleeve 2 includes a connecting sleeve 201, one side of which is sleeved on the end of the tower 1, and the other side of the connecting sleeve 201 is provided with a connecting seat 202. The inner side of the connecting sleeve 201 is adapted to the end of the tower 1, and the end of the tower 1 extends into the interior of the connecting sleeve 201. The size of the connecting sleeve 201 in this application is determined according to the actual size of the tower 1. For example, if the actual diameter of the tower 1 is 7 meters, the inner diameter of the connecting sleeve 201 is 7.01 ± 0.002 meters, and the position for setting the sealing gasket is reserved.

[0037] A sealing gasket is provided between the sealing groove 202 and the tower 1. The sealing gasket is always in close contact with the tower 1 and the inner wall of the sealing groove 202 to further increase the sealing performance. Furthermore, the connecting sleeve 201 has a certain depth. When the end of the tower 1 is not fully inserted into the innermost side of the sealing groove 202, the part of the tower 1 and the inner wall of the sealing groove 202 that are in contact through the sealing gasket is still in a sealed state, which can achieve a good sealing effect, thus having better adaptability, allowing for a certain degree of error, and facilitating sealing connection.

[0038] The connecting seat 202 is tapered, and the diameter of the end face of the connecting seat 202 away from the connecting sleeve 201 is smaller than the area of ​​the end face of the other end of the connecting seat 202.

[0039] During sea transport, the conical connecting seat 202 can guide the seawater in contact with the moving direction to both sides, reducing the resistance of transport and thus reducing the tension on the steel cable 7, making it easier to transport stably.

[0040] Example 3: like Figure 1 ,3 As shown in Figures 4 and 5, the end of the tower 1 is provided with a flange 101. The flange 101 is a flange structure commonly used in existing tower 1. The connecting sleeve 201 is provided with a fixing seat 203, and the fixing seat 203 is provided with a connecting piece 4. A gap is provided between the outer peripheral surfaces of the connecting sleeve 201 and the fixed seat 203, and the gap is adapted to the flange 101, with the flange 101 located within the gap; Among them, the connector 4 includes a plurality of sliders 401 that are slidably connected to the fixed base 203, and the sliders 401 are provided with stabilizing blocks 402; The stabilizing block 402 slides with the slider 401 between a first position and a second position. In the first position, the stabilizing block 402 is located inside the fully fixed seat 203; in the second position, part of the stabilizing block 402 is located inside the fixed seat 203 and the other part is located on the end face of the flange 101. The fixed base 203 is provided with a first spring 403, which abuts against the slider 401. The first spring 403 is located on the side of the slider 401 near the flange 101. The fixed base 203 is slidably connected to a push block 404, which is a frustum shape. The slider 401 contacts the side of the push block 404. The side of the push block 404 is the side of the frustum, which is part of the conical surface. The contact surface between the slider 401 and the push block 404 is adapted to the side of the push block 404. The hook part 3 is slidably connected to the sealing sleeve 2, and the small end of the push block 404 is connected to the hook part 3. The small end of the push block 404 is provided with a second spring 405.

[0041] During use, the hook 3, when subjected to tension, pulls the push block 404, which in turn drives the push block 404 to push the slider 401. Since the push block 404 is frustum-shaped, the slider 401 contacts the side of the push block 404, thus... Figure 4 In the middle, when the pusher 404 moves to the left, it will push the slider 401 to slide, which will drive the stabilizing block 402 to move to the second position, thereby completing the connection between the sealing sleeve 2 and the tower 1. The operation is simple and easy to connect. Conversely, it can be disassembled. Moreover, it does not use a bolt and nut structure, which makes the disassembly and assembly more efficient and the operation simpler, while also causing less damage to the flange. During hoisting, the crane hook is directly connected to the hook component 3, and then a pulling force is applied to make the hook component 3 be in the pulled-out state. Then, the other connecting structures between the sealing sleeve 2 and the tower 1 are removed. The crane continues to work to lift one end of the tower 1 until it is in a vertical state. Finally, when it is necessary to remove the sealing sleeve 2, the crane slowly lowers the hook, and the hook component 3 is no longer under tension. Under the action of the elastic force of the first spring 403 and the second spring 405, the slider 401 and the push block 404 are driven back to the initial position, and the flange 101 is no longer restricted. Then the sealing sleeve 2 can be removed. The operation is simple and convenient for hoisting. This process only describes the process of lifting one end of the tower 1 and removing the sealing sleeve 2. Other hoisting processes can be carried out using existing methods. This application has not made any modifications, so they will not be described in detail.

[0042] In a further embodiment, such as Figure 4 and 7 As shown, the hook component 3 includes a hook 301, which is located outside the sealing sleeve 2; The hook 301 is provided with a connecting rod 302, which extends into the interior of the sealing sleeve 2. The end of the connecting rod 302 away from the hook 301 is fixedly connected to the push block 404. The sealing sleeve 2 is provided with a limiting groove 303, and the connecting rod 302 is provided with a limiting block 304, which is located inside the limiting groove 303; The sealing sleeve 2 is provided with a first positioning hole 305 and a second positioning hole 306, and the limiting block 304 is provided with an inner positioning hole 307. The limiting block 304 slides along the limiting groove 303 between the first limit position and the second limit position. At the first limit position, the inner positioning hole 307 is coaxial with the first positioning hole 305; at the second limit position, the inner positioning hole 307 is coaxial with the second positioning hole 306.

[0043] During the connection process between the sealing sleeve 2 and the tower 1, the sealing sleeve 2 is first fitted onto the end of the tower 1. Then, a tool such as a jack is used to hold the sealing sleeve 2 in place so that it does not move away from the tower 1. Then, the pull hook 301 is pulled to drive the connecting rod 302, the limiting block 304 and the push block 404 to slide in sequence, so that the stabilizing block 402 is located on the side of the flange 101, thus completing the connection. Finally, the rod is inserted into the first positioning hole 305 and the positioning hole 307 so that the limiting block 304 cannot move at will, thereby ensuring that the stabilizing block 402 always limits the flange 101 and ensures the stability of the connection between the sealing sleeve 2 and the tower 1. During hoisting, the crane hook is directly connected to the pull hook 301, and then a pulling force is applied to keep the pull hook 301 in the pulled-out state. Then the rod in the positioning hole 307 is pulled out, and then the crane continues to work to lift one end of the tower 1. In the subsequent disassembly process, there is no need for complicated steps such as unscrewing screws, which increases the hoisting efficiency and convenience.

[0044] At the same time, when the sealing sleeve 2 is removed after hoisting, the crane slowly lowers the hook, the hook part 3 is no longer under tension, and the slider 401, push block 404 and limit block 304 return to the initial position. At this time, the rod can be inserted into the positioning hole 307 through the second positioning hole 306, and then the crane controls the hook to remove the hook part 3 and the sealing sleeve 2, completing the disassembly.

[0045] In a further embodiment, such as Figure 8 As shown, the above-mentioned rod is a positioning rod 351. When the inner positioning hole 307 is coaxial with the first positioning hole 305 or the inner positioning hole 307 is coaxial with the second positioning hole 306, the positioning rod 351 is inserted into the positioning hole 307 through the first positioning hole 305 or the second positioning hole 306 for positioning. One end of the positioning rod 351 is provided with a rotating groove 352, and a limit rod 353 is rotatably connected in the rotating groove 352 through a positioning shaft 354; The other end of the positioning rod 351 is provided with a fixing rod 355, which is perpendicular to the positioning rod 351.

[0046] In use, first make the positioning rod 351 and the limiting rod 353 coaxial. Then, insert the limiting rod 353 into the first positioning hole 305, and continue inserting the limiting rod 353 until the limiting rod 353 comes out from the other end of the first positioning hole 305. Finally, rotate the limiting rod 353 so that it is no longer coaxial with the positioning rod 351 to complete the positioning. Conversely, it can be removed. The connection of the first positioning hole 305 is the same.

[0047] Example 4: like Figure 6 As shown, the same structure will not be described again. The end of the tower 1 is provided with a flange 101, and the sealing sleeve 2 is provided with multiple through holes. The position of the through holes corresponds to the connection hole of the flange 101. The flange 101 and the sealing sleeve 2 are connected by the first bolt 204 and the nut. A rubber sealing gasket is provided between the first bolt 204, the flange 101, and the sealing sleeve 2; The flange 101 and the sealing sleeve 2 are connected using the first bolt 204 and nut to complete the sealing connection of the sealing sleeve 2 to the tower 1.

[0048] During connection, first, the first bolt 204 is passed through the connection hole of the flange 101 from inside the tower 1. Then, the sealing sleeve 2 is installed so that the first bolt 204 passes through the through hole of the sealing sleeve 2. Then, the nut is tightened. To facilitate connection, a magnet can be added to the first bolt 204 so that the first bolt 204 is close to the flange 101, making it easier for the first bolt 204 to be aligned with the through hole during installation.

[0049] Example 5: like Figure 2As shown, the side of the tower 1 is provided with multiple pull ropes 5, and the two ends of the pull ropes 5 are connected to the sealing sleeves 2 to tighten the sealing sleeves 2 at both ends of the tower 1. The side of the sealing sleeve 2 is provided with multiple fixing rings, and the pull rope 5 is connected to the sealing sleeve 2 through the fixing rings.

[0050] In use, the sealing sleeves 2 at both ends of the tower 1 are tightened by pulling the rope 5 to complete the connection between the tower 1 and the sealing sleeves 2. The operation is simple and the connection is convenient.

[0051] Furthermore, depending on the actual connection situation and tower transportation requirements, this application may choose to use or combine embodiments 3, 4 and 5.

[0052] Example 6: like Figure 1 , 2 As shown in Figure 9, the sealing sleeve 2 is provided with a buoyancy structure 6; the number of buoyancy structures 6 is two; The buoyancy structure 6 includes multiple fixed blocks 601, and a movable rod 602 is provided between two adjacent fixed blocks 601. The end of the movable rod 602 is provided with a fixed shaft 603, and the movable rod 602 is rotatably connected to the fixed block 601 through the fixed shaft 603. The movable rod 602 and the fixed block 601 are provided with insertion holes 604, and a plug rod 611 is inserted into the insertion holes 604; the plug rod 611 passes through the insertion holes 604 in both the movable rod 602 and the fixed block 601. The end of the movable rod 602 is provided with a connecting ring 606, and the connecting ring 606 is provided with a connecting hole 607; The movable rod 602 has multiple threaded holes 605 inside; The movable rod 602 is connected to a floating plate 608. The floating plate 608 has a mounting hole 609. The movable rod 602 passes through the mounting hole 609. The floating plate 608 is preferably inclined. The floating plate 608 is provided with multiple fixing holes 610. The second bolt 612 passes through the fixing hole 610 and is threadedly connected to the threaded hole 605. The second bolt 612 is preferably a pin bolt. The movable rod 602 is a square rod, and the mounting hole 609 is a square hole that is adapted to the movable rod 602.

[0053] During land transportation, the floating plate 608 is not installed. The insert rod 611 is removed, and the movable rod 602 is rotated about the fixed shaft 603 to the axial position of the tower 1, which facilitates land transportation. Before tower 1 is lowered into the sea, the movable rod 602 is rotated to the side of tower 1, and then the insert rod 611 is inserted to prevent the movable rod 602 from rotating arbitrarily. Then, as... Figure 9 Connect the floating plate 608 according to the direction of travel, and finally tighten the second bolt 612 to complete the connection of the floating plate 608. During sea transport, the floating plate 608 can increase the overall buoyancy of the tower 1, making it easier to transport; and since there are floating plates 608 on both sides, the tower 1 can be prevented from rotating randomly during transport, thereby increasing the stability of the tower 1 during transport and preventing the rotation of the tower 1 from putting pressure on the steel cable 7.

[0054] Furthermore, during use, the connecting ring 606 can be connected via steel cable 7 or an additional pull rope 5 to increase the stability and strength of the connection between the sealing sleeves 2.

[0055] Example 7: like Figure 10 As shown, the sealing sleeve 2 is equipped with multiple secondary connection mechanisms for connecting and reinforcing different tower sections 1; The secondary connection mechanism includes multiple fixed blocks 601, a movable rod 602 is provided between two adjacent fixed blocks 601, and a fixed shaft 603 is provided at the end of the movable rod 602. The movable rod 602 is rotatably connected to the fixed block 601 through the fixed shaft 603. The movable rod 602 and the fixed block 601 are provided with insertion holes 604, and a plug rod 611 is inserted into the insertion holes 604; the plug rod 611 passes through the insertion holes 604 in both the movable rod 602 and the fixed block 601. The end of the movable rod 602 is provided with a connecting ring 606, and the connecting ring 606 is provided with a connecting hole 607; When multiple tower sections 1 are transported together, such as Figure 11 and Figure 12 The towers 1 can be transported in sequence or side by side. A connecting plate 8 is provided between the connecting rings 606 connecting different towers 1. The connecting plate 8 is provided with a connecting column, which is inserted into the connecting hole 607. The hook parts 3 connecting different towers 1 are connected by steel cables 7 or cables 701, which can further connect the towers 1 that are connected in sequence or side by side, making the connection more firm and stable, so as to facilitate the connection and transportation of multiple towers 1.

[0056] The aforementioned pull rope 5, steel cable 7, and pull cord 701 are all existing tensile steel ropes or Dyneema ropes, and the connecting hooks can be connected using existing methods.

[0057] The steel structure tower described in this application merely represents that the tower is generally made of steel structure. Therefore, steel structure should not be interpreted as a limitation of this application, and other offshore towers are also within the protection scope of this invention.

[0058] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A semi-submersible transportation method for offshore wind turbine steel structure towers, characterized by: Includes the following steps: S1. After the tower is manufactured, seal both ends of the tower and install pull hooks; S2. Construct a landslide on the coast and set up a parking area; S3. Transport the tower to the port, and the transport vehicle stops at the parking point; S4. Move the tower to the landslide site and use steel cables to connect the towing wheel and the hook at the end of the tower; S5. The tugboat slowly moves to drag the connected tower to the sea surface; S6. The tugboat transports the tower to the machine location; The above steps are used to transport the offshore wind turbine towers to the turbine location.

2. The semi-submersible transportation method for offshore wind turbine steel structure towers according to claim 1, characterized in that: Apply lubricating oil to the landslide area; S5 also includes: S511. The tugboat slowly moves a distance and tows the connected tower to the sea surface; S512. Move another tower to the landslide site and use steel cables to connect this tower to the hook at the end of the previous tower. S513, the tugboat slowly moves a distance and drags the newly connected tower to the sea surface; S514. Repeat steps S512 and S513 until the specified quantity is reached; or S521. Move another tower to the landslide site and place it alongside the already placed tower. Connect the two ends of this tower to the two ends of the adjacent tower with steel cables. Use steel cables to connect the towing vessel and the hook at the end of the tower; S522, Repeat S521 until the specified quantity is reached; S523, The tugboat moves slowly, dragging the connected tower to the sea surface; In steps S4, S521, and S522, first plan the number and position of the towers placed side by side, and then connect them sequentially from one side to the other; or first connect the towers in the middle position, and then connect them one by one on both sides of the middle tower.

3. A semi-submersible transport vehicle for offshore wind turbine steel structure towers, characterized in that: Includes a sealing sleeve (2), and a hook (3) is provided on one side of the sealing sleeve (2); The other side of the sealing sleeve (2) is used to connect the tower (1), and the sealing sleeve (2) is located at the end of the tower (1); The hook (3) is used to connect the transport ship via the steel cable (7); The connection between the sealing sleeve (2) and the tower (1) is sealed.

4. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 3, characterized in that: The sealing sleeve (2) includes a connecting sleeve (201), one side of which is sleeved on the end of the tower (1), and the other side of the connecting sleeve (201) is provided with a connecting seat (202). The inner side of the connecting sleeve (201) is adapted to the end of the tower (1), and the end of the tower (1) extends into the interior of the connecting sleeve (201); A sealing gasket is provided between the sealing groove (202) and the tower (1); The connecting seat (202) is conical, and the diameter of the end face of the connecting seat (202) away from the connecting sleeve (201) is smaller than the area of ​​the end face of the other end of the connecting seat (202).

5. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 4, characterized in that: The tower (1) is provided with a flange (101) at its end, and a fixed seat (203) is provided inside the connecting sleeve (201), and a connecting piece (4) is provided inside the fixed seat (203). A gap is provided between the outer peripheral surfaces of the connecting sleeve (201) and the fixed seat (203), the gap being adapted to the flange (101), and the flange (101) being located within the gap; The connector (4) includes multiple sliders (401) that are slidably connected to the fixed base (203), and the sliders (401) are provided with stabilizing blocks (402). The stabilizing block (402) slides between a first position and a second position following the slider (401). In the first position, the stabilizing block (402) is located inside the fully fixed seat (203); in the second position, part of the stabilizing block (402) is located inside the fixed seat (203), and the other part is located on the end face of the flange (101). The fixed base (203) is provided with a first spring (403), which abuts against the slider (401). The first spring (403) is located on the side of the slider (401) near the flange (101). The fixed base (203) is slidably connected to a push block (404), which is a frustum shape. The slider (401) contacts the side of the push block (404), and the contact surface between the slider (401) and the push block (404) is adapted to the side of the push block (404). The hook (3) is slidably connected to the sealing sleeve (2), and the small end of the push block (404) is connected to the hook (3). The small end of the push block (404) is provided with a second spring (405).

6. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 5, characterized in that: The hook component (3) includes a hook (301) located outside the sealing sleeve (2); The hook (301) is provided with a connecting rod (302), which extends into the interior of the sealing sleeve (2), and the end of the connecting rod (302) away from the hook (301) is fixedly connected to the push block (404); The sealing sleeve (2) is provided with a limiting groove (303), and the connecting rod (302) is provided with a limiting block (304), which is located inside the limiting groove (303); The sealing sleeve (2) is provided with a first positioning hole (305) and a second positioning hole (306), and the limiting block (304) is provided with an inner positioning hole (307). The limiting block (304) slides along the limiting groove (303) between the first limit position and the second limit position. At the first limit position, the inner positioning hole (307) is coaxial with the first positioning hole (305); at the second limit position, the inner positioning hole (307) is coaxial with the second positioning hole (306).

7. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 6, characterized in that: A positioning rod (351) is also provided. When the inner positioning hole (307) is coaxial with the first positioning hole (305) or the inner positioning hole (307) is coaxial with the second positioning hole (306), the positioning rod (351) is inserted into the positioning hole (307) through the first positioning hole (305) or the second positioning hole (306) for positioning. One end of the positioning rod (351) is provided with a rotating groove (352), and a limit rod (353) is rotatably connected in the rotating groove (352) through a positioning shaft (354); The other end of the positioning rod (351) is provided with a fixing rod (355), which is perpendicular to the positioning rod (351).

8. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 3, characterized in that: The tower (1) is provided with a flange (101) at the end, and the sealing sleeve (2) is provided with multiple through holes. The position of the through holes corresponds to the connection hole of the flange (101). The flange (101) and the sealing sleeve (2) are connected by the first bolt (204) and the nut. A rubber sealing gasket is provided between the first bolt (204) and the flange (101) and the sealing sleeve (2); and / or The side of the tower (1) is provided with multiple pull ropes (5), and the two ends of the pull ropes (5) are connected to the sealing sleeves (2) to tighten the sealing sleeves (2) at both ends of the tower (1). The side of the sealing sleeve (2) is provided with multiple fixing rings, and the pull rope (5) is connected to the sealing sleeve (2) through the fixing rings.

9. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 3, characterized in that: The sealing sleeve (2) is provided with a buoyancy structure (6); there are two buoyancy structures (6); The buoyancy structure (6) includes multiple fixed blocks (601), and a movable rod (602) is provided between two adjacent fixed blocks (601). The end of the movable rod (602) is provided with a fixed shaft (603), and the movable rod (602) is rotatably connected to the fixed block (601) through the fixed shaft (603). The movable rod (602) and the fixed block (601) are provided with insertion holes (604), and a plug rod (611) is inserted into the insertion hole (604); the plug rod (611) passes through the insertion hole (604) in both the movable rod (602) and the fixed block (601). The end of the movable rod (602) is provided with a connecting ring (606), and the connecting ring (606) is provided with a connecting hole (607). The movable rod (602) has multiple threaded holes (605) inside; The movable rod (602) is connected to the floating plate (608), and the floating plate (608) has a mounting hole (609) inside, through which the movable rod (602) passes. The floating plate (608) is provided with multiple fixing holes (610), and the second bolt (612) passes through the fixing holes (610) and is threadedly connected to the threaded hole (605); The movable rod (602) is a square rod, and the mounting hole (609) is a square hole that is compatible with the movable rod (602).

10. A semi-submersible transport vehicle for an offshore wind turbine steel structure tower according to claim 3, characterized in that: The sealing sleeve (2) is equipped with multiple secondary connection mechanisms; The secondary connection mechanism includes multiple fixed blocks (601), and a movable rod (602) is provided between two adjacent fixed blocks (601). The end of the movable rod (602) is provided with a fixed shaft (603), and the movable rod (602) is rotatably connected to the fixed block (601) through the fixed shaft (603). The movable rod (602) and the fixed block (601) are provided with insertion holes (604), and a plug rod (611) is inserted into the insertion hole (604); the plug rod (611) passes through the insertion hole (604) in both the movable rod (602) and the fixed block (601). The end of the movable rod (602) is provided with a connecting ring (606), and the connecting ring (606) is provided with a connecting hole (607). A connecting plate (8) is provided between the connecting rings (606) connecting different towers (1), and the connecting plate (8) is provided with a connecting post, which is inserted into the connecting hole (607). The hooks (3) connecting different towers (1) are connected by steel cables (7) or cables (701).

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