Positioning structure for installing and grouting offshore wind turbine jacket foundation

Abstract

The invention relates to the technical field of offshore wind turbines, in particular to a positioning structure for installing and grouting an offshore wind turbine jacket foundation, which comprises a wind turbine jacket body, a seabed pile and a positioning structure body, and the positioning structure body is used for connecting the wind turbine jacket body and the seabed pile; the positioning structure body comprises a connecting pipe, a first mounting box is fixedly mounted in the connecting pipe, a driving structure is rotatably mounted on the first mounting box, and a connecting structure is fixedly mounted on the driving structure; limiting pipes are arranged in the fan jacket body and the seabed pile, an impact structure is fixedly installed on the driving structure and comprises an extendable extension column, and compared with traditional flange connection, complex acting force caused by sea wave impact, sea wind load and sea current surging can be effectively resisted; long-term stable operation of the fan in a severe marine environment is ensured, and risks of structure looseness and displacement are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind turbines, and specifically, to a positioning structure for grouting during the installation of a jacket foundation of an offshore wind turbine. Background Art

[0002] Offshore wind turbines are usually installed in a marine environment and are affected by various complex factors such as sea waves, sea winds, ocean currents, and seawater corrosion; the jacket foundation, as a key structure for supporting offshore wind turbines, needs to be firmly connected to the seabed and the main body of the wind turbine to ensure the normal operation of the wind turbine under harsh marine conditions. During the installation of the jacket foundation, the grouting operation is an important link to achieve the tight connection between the jacket and the subsea pile, and the quality of the grouting directly affects the bearing capacity and stability of the entire foundation structure.

[0003] Patent Publication No. CN103205981A discloses a positioning structure for grouting during the installation of a jacket foundation of an offshore wind turbine, including multiple pile legs of the wind turbine jacket foundation and tubular subsea piles. The pile legs correspond to the subsea piles one by one. The pile legs are inserted through the upper pipe orifice of the subsea pile and are sleeved in the subsea pile in a suspended manner. A pile leg fixing structure is provided between each subsea pile and the pile leg; the purpose of the present invention is to provide a positioning structure for grouting during the installation of a jacket foundation of an offshore wind turbine. By using this positioning structure, the wind turbine jacket foundation is fixed in advance to prepare for subsequent grouting, and it has low cost, convenient operation, does not need to be disassembled, and has less operation time.

[0004] Traditional positioning connection methods, such as using flanges to connect the subsea pile and the pile leg, although they can achieve the preliminary connection between the two, have obvious deficiencies in the grouting link. Flange connection mainly relies on bolt fastening. This connection method only connects the main body of the wind turbine jacket and the subsea pile together and has no auxiliary effect on the subsequent slurry perfusion operation in the subsea pile; during the actual grouting process, due to the lack of effective positioning and auxiliary measures, the slurry perfusion is often not sufficient or not dense; for example, the slurry may not be able to evenly fill the gap between the jacket and the subsea pile, resulting in voids in some areas, affecting the integrity and bearing capacity of the foundation structure; moreover, the non-dense grouting layer is prone to problems such as loosening and cracking under the long-term action of external forces such as sea wave impact and sea wind load, seriously threatening the safe and stable operation of offshore wind turbines.

[0005] Based on this, the present invention discloses a positioning structure for grouting during the installation of a jacket foundation of an offshore wind turbine. Summary of the Invention

[0006] To solve the problems of insufficient and non-dense slurry perfusion in the background art, which affect the integrity and bearing capacity of the foundation structure, the present invention provides a positioning structure for grouting during the installation of a jacket foundation of an offshore wind turbine, including a wind turbine jacket body, a subsea pile, and a positioning structure body. Among them, the positioning structure body is used for connecting the wind turbine jacket body and the subsea pile; Among them, the positioning structure body includes a connecting pipe, a first installation box is fixedly installed inside the connecting pipe, a driving structure is rotatably installed on the first installation box, and a connecting structure is fixedly installed on the driving structure; Among them, a limiting pipe is arranged inside the wind turbine jacket body and the subsea pile. During the connection process of the positioning structure body with the wind turbine jacket body and the subsea pile, the driving structure unfolds the connecting structure and locks it with the limiting pipe; Among them, an impact structure is fixedly installed on the driving structure. The impact structure includes an extendable extension column. When the impact structure is driven to rotate by the driving structure, the extension column vibrates the concrete under the action of centrifugal force.

[0007] As a further optimization scheme of the present invention, the driving structure includes a positive and negative screw rod, the positive and negative screw rod is rotatably connected to the first installation box, a threaded block is threadedly connected to the positive and negative screw rod, and the threaded block is fixedly connected to the connecting structure.

[0008] As a further optimization scheme of the present invention, the connecting structure includes a second installation box, the second installation box is fixedly connected to the threaded block, a sliding plate is slidably connected inside the second installation box, the top of the sliding plate is connected to the second installation box through a first spring, a second sliding rod is fixedly installed on the top of the sliding plate, the second sliding rod penetrates through the threaded block and is slidably connected to the threaded block, a first sliding rod is fixedly installed on the top of the second sliding rod, and a first installation plate is fixedly installed on the second installation box.

[0009] As a further optimization scheme of the present invention, the connecting structure further includes a fixed pipe, an installation groove is opened inside the fixed pipe, the fixed pipe is fixedly connected to the sliding plate, a pressing plate is slidably connected to the fixed pipe, a third sliding rod is fixedly connected to the pressing plate, a third spring is sleeved on the third sliding rod, one end of the third spring is fixedly connected to the pressing plate, the other end of the third spring is fixedly connected to the pressing plate, a limiting column is slidably connected to the fixed pipe, a second magnetic plate is fixedly installed on the fixed pipe, the second magnetic plate is connected to the hollow plate through a second spring, the hollow plate is fixedly connected to the fixed pipe, and a first magnetic plate is arranged between the two hollow plates.

[0010] As a further optimization scheme of the present invention, the limiting pipe is provided with a second groove and a first groove. The two first grooves are respectively located on the upper and lower sides of the second groove and are communicated with the second groove.

[0011] As a further optimized solution of the present invention, the inside of the positive and negative screw is a hollow structure. The driving structure further includes a driving shaft located inside the positive and negative screw, and two second auxiliary bars and two third auxiliary bars are fixedly installed on the driving shaft.

[0012] As a further optimized solution of the present invention, the impact structure includes a driving box fixedly connected to the first installation box. A rotating tube is rotatably installed on the driving box. A coil spring is installed inside the driving box. One end of the coil spring is connected to the rotating tube, and the other end of the coil spring is also connected to the rotating tube. A first connection groove is provided inside the rotating tube on the left side of the positive and negative screw, and a second connection groove is provided inside the rotating tube on the right side of the positive and negative screw.

[0013] As a further optimized solution of the present invention, the impact structure further includes a first auxiliary bar fixedly connected to the rotating tube. A driving ring is slidably connected to the rotating tube, and the driving ring is slidably connected to the first auxiliary bar.

[0014] As a further optimized solution of the present invention, the impact structure further includes a stirring tube fixedly connected to the driving ring. A fourth spring is provided inside the stirring tube. One end of the fourth spring is fixedly connected to the stirring tube, and the other end of the fourth spring is fixedly connected to an extension column.

[0015] As a further optimized solution of the present invention, the impact structure further includes a third magnetic plate fixedly connected to the driving ring. A plurality of fourth magnetic plates are fixedly installed on the driving box. The magnetic forces of the plurality of fourth magnetic plates are different, and the magnetic poles of the plurality of fourth magnetic plates are arranged alternately.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For the positioning structure for grouting installation of the jacket foundation of an offshore wind turbine described in the present invention, the driving structure includes a positive and negative screw. When the positive and negative screw is rotated, the threaded block moves accordingly, driving the second installation box in the connection structure to act. At this time, due to the interaction of the internal magnetic blocks between the first sliding rod and the first installation plate, the sliding plate is pushed out of the second installation box, promoting the precise insertion of the fixed tube and the limiting tube. Moreover, the limiting column on the fixed tube will tightly cooperate with the first groove of the limiting tube to form self-locking. This connection method greatly enhances the connection stability between the wind turbine jacket body and the subsea pile. Compared with the traditional flange connection, it can effectively resist the complex forces brought by wave impact, sea wind load, and ocean current surge, ensuring the long-term stable operation of the wind turbine in a harsh marine environment and reducing the risk of structural loosening and displacement. 2. For the positioning structure used in the grouting for the installation of the jacket foundation of an offshore wind turbine, during grouting, the positive and negative screw rotates to drive the drive shaft. The drive shaft makes the rotating pipe rotate by means of the second auxiliary strip and the third auxiliary strip, and the coil spring stores energy accordingly. When the drive shaft is pulled, the rotating pipe rotates at a high speed under the action of the coil spring, thereby driving the mixing pipe to rotate rapidly. The extension column in the mixing pipe continuously impacts the connecting pipe under the combined action of centrifugal force and the fourth spring. The vibration generated by this impact can be evenly transmitted to the slurry in the wind turbine jacket body and the subsea pile, promoting the uniform flow of the slurry in the gap. Compared with the traditional grouting method, it effectively avoids the situation of local accumulation or uneven filling of the slurry, ensuring that every corner between the jacket and the subsea pile can be fully filled with the slurry, and guaranteeing the uniformity of grouting. 3. For the positioning structure used in the grouting for the installation of the jacket foundation of an offshore wind turbine, during the rotation of the mixing pipe, the third magnetic plate fixed on it plays an important role. A plurality of fourth magnetic plates with different magnetic forces and staggered magnetic poles are fixedly installed on the drive box. The third magnetic plate continuously interacts with these fourth magnetic plates during rotation. Under the alternating action of repulsion and attraction, the position of the mixing pipe changes continuously, so that vibration can be generated at different positions on the connecting pipe. This enables the vibration to fully cover the connecting pipe and be transmitted to the entire grouting area, making it easier for the air and excess water in the slurry to be discharged. Compared with the ordinary grouting process, it greatly improves the density of grouting, effectively reduces the voids and bubbles in the grouting layer, and enhances the strength and stability of the foundation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the connection schematic diagram of the wind turbine jacket body and the subsea pile of the present invention; Figure 3 is the internal structural schematic diagram of the positioning structure body of the present invention; Figure 4 is Figure 3 the enlarged view at A in Figure 5 is the internal structural schematic diagram of the second installation box of the present invention; Figure 6 is the internal structural schematic diagram of the limiting pipe of the present invention; Figure 7 is the internal structural schematic diagram of the fixed pipe of the present invention; Figure 8 is the connection schematic diagram of the drive shaft and the rotating pipe of the present invention; Figure 9 is Figure 8 the enlarged view at B in Figure 10 is Figure 8 the enlarged view at C in Figure 11 It is a schematic connection diagram of the coil spring and the drive box of the present invention; Figure 12 It is a schematic connection diagram of the extension column and the mixing pipe of the present invention.

[0018] The meanings of each label in the figure are as follows: 1. Blower jacket body; 2. Submarine pile; 3. Positioning structure body; 301. First mounting box; 302. Connecting pipe; 303. First mounting plate; 304. Right and left screw; 305. Second mounting box; 306. First sliding rod; 307. Threaded block; 308. First spring; 309. Second sliding rod; 310. Slide plate; 311. Fixed pipe; 312. Pressing plate; 313. Limit post; 314. Second spring; 315. First magnetic plate; 316. Third sliding rod; 317. Second magnetic plate; 318. Third spring; 319. Hollow plate; 401. Limit pipe; 402. First groove; 403. Second groove; 501. Drive box; 502. Drive shaft; 503. Mixing pipe; 504. Rotating pipe; 505. First auxiliary strip; 506. Third magnetic plate; 507. Drive ring; 508. Fourth magnetic plate; 509. Second auxiliary strip; 510. Third auxiliary strip; 511. Coil spring; 512. Extension column; 513. Fourth spring. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention provides a positioning structure for the installation grouting of an offshore wind turbine jacket foundation. Refer to Figures 1 to 12 as shown, which includes a blower jacket body 1, a submarine pile 2, and a positioning structure body 3; Among them, the positioning structure body 3 is used for connecting the blower jacket body 1 and the submarine pile 2; Among them, the positioning structure body 3 includes a connecting pipe 302. A first mounting box 301 is fixedly installed inside the connecting pipe 302. A driving structure is rotatably installed on the first mounting box 301, and a connecting structure is fixedly installed on the driving structure; Among them, limit pipes 401 are arranged inside the blower jacket body 1 and the submarine pile 2. During the connection process of the positioning structure body 3 with the blower jacket body 1 and the submarine pile 2, the driving structure unfolds the connecting structure and locks it with the limit pipe 401; The driving structure is fixedly mounted with an impact structure, which includes an extendable extension column 512. When the impact structure is driven to rotate by the driving structure, the extension column 512 vibrates the concrete under the action of centrifugal force.

[0021] It should be noted that the pile legs and seabed piles 2 and other components of the wind turbine jacket foundation are prefabricated on land and transported to the offshore construction site; at the same time, the materials and equipment for grouting, such as grouting pipes, grouting pumps, mixers, etc., are prepared.

[0022] Using the positioning system on the ship, such as GPS, etc., the seabed pile 2 is hoisted to the predetermined position and inserted into the seabed to a certain depth as a reference for subsequent installation; then the pile leg is inserted through the pipe opening at the upper end of the seabed pile 2, suspended in the seabed pile 2, and the pile leg is connected and fixed to the seabed pile 2 using a pile leg fixing structure, and a common flange connection is used. The two flanges are respectively connected to the top of the seabed pile 2 and the outer circumference of the pile leg, and then locked and connected by bolts, so that the pile leg and the seabed pile 2 form a whole to prevent the pile leg from displacement during the grouting process.

[0023] The flange connection is mainly achieved by bolts, which can only connect the fan duct frame body 1 and the seabed pile 2 together, and are of no help for the subsequent need to pour slurry into the seabed pile 2. The slurry is not poured sufficiently or densely, which will cause great problems for subsequent use. This is because we can first use bolts to connect the connecting pipe 302 with the fan duct frame body 1 and the seabed pile 2, and then use the driving structure to expand the connecting structure. The expanded connecting structure will be plugged into the limiting pipe 401, thereby further connecting the fan duct frame body 1, the seabed pile 2, and the positioning structure body 3 together to ensure the connection between the fan duct frame body 1, the seabed pile 2, and the positioning structure body 3. In addition, during the driving process of the driving structure, the impact structure will also accumulate force, which is convenient for the impact structure to continuously vibrate the positioning structure body 3 during the subsequent grouting process. The positioning structure body 3 will transmit the vibration to the fan duct frame body 1 and the seabed pile 2, so that the vibration will also act on the slurry, making the slurry more dense.

[0024] The stirred slurry is injected into the gap between the pile leg and the seabed pile 2 through the grouting pipe; as the slurry is injected, air and excess water will be discharged through the water outlet hole; during the grouting process, the grouting pressure, speed and other parameters must be strictly controlled to ensure that the slurry can fully fill the gap and avoid the generation of bubbles or looseness.

[0025] After grouting is completed, the grouted part needs to be cured. Usually, methods such as water curing or steam curing are adopted to make the slurry reach the designed strength. During the curing period, collisions or other interferences with the jacket foundation should be avoided to ensure the grouting quality. After the strength of the grouted part meets the requirements, the jacket assembly and the leg assembly are connected to complete the overall installation of the jacket foundation of the offshore wind turbine.

[0026] As Figures 1 to 4 shown, the driving structure includes a left - right screw 304. The left - right screw 304 is rotatably connected to the first mounting box 301. A threaded block 307 is threadedly connected to the left - right screw 304, and the threaded block 307 is fixedly connected to the connecting structure.

[0027] By rotating the left - right screw 304, the left - right screw 304 drives the two threaded blocks 307 to approach or move away from each other, so that the two connecting structures can approach or move away from each other. Thus, the connecting structure can be inserted into the limiting tube 401, which can further play a fixing effect and reduce the load borne by the bolts.

[0028] As Figure 4 and Figure 5 shown, the connecting structure includes a second mounting box 305. The second mounting box 305 is fixedly connected to the threaded block 307. A sliding plate 310 is slidably connected inside the second mounting box 305. The top of the sliding plate 310 is connected to the second mounting box 305 through a first spring 308. A second sliding rod 309 is fixedly installed at the top of the sliding plate 310. The second sliding rod 309 passes through the threaded block 307 and is slidably connected to the threaded block 307. A first sliding rod 306 is fixedly installed at the top of the second sliding rod 309. A first mounting plate 303 is fixedly installed on the second mounting box 305.

[0029] When the left - right screw 304 rotates to make the two threaded blocks 307 approach or move away from each other, the second mounting box 305 can be moved accordingly. In this way, the second mounting box 305 will drive the first sliding rod 306 to move. Since magnetic blocks are inlaid on both the first sliding rod 306 and the first mounting plate 303, and the magnetic forces between the two magnetic blocks are opposite, and multiple magnetic blocks are inlaid on the first mounting plate 303 with different magnetic forces that increase gradually. When the first sliding rod 306 and the first mounting plate 303 move relative to each other continuously, the magnetic force received by the first sliding rod 306 will increase continuously. Thus, the first sliding rod 306 will continuously approach the threaded block 307, and in this way, the second sliding rod 309 will drive the sliding plate 310 to move out of the second mounting box 305, facilitating the connection with the limiting tube 401.

[0030] As Figure 7As shown, the connecting structure further includes a fixed pipe 311. An installation groove is formed inside the fixed pipe 311. The fixed pipe 311 is fixedly connected to the sliding plate 310. A pressing plate 312 is slidably connected to the fixed pipe 311. A third sliding rod 316 is fixedly connected to the pressing plate 312. A third spring 318 is sleeved on the third sliding rod 316. One end of the third spring 318 is fixedly connected to the pressing plate 312, and the other end of the third spring 318 is fixedly connected to the pressing plate 312. A limiting post 313 is slidably connected to the fixed pipe 311. A second magnetic plate 317 is fixedly installed on the fixed pipe 311. The second magnetic plate 317 is connected to the hollowed-out plate 319 through a second spring 314. The hollowed-out plate 319 is fixedly connected to the fixed pipe 311. A first magnetic plate 315 is arranged between the two hollowed-out plates 319.

[0031] As Figure 6 shown, the limiting pipe 401 is provided with a second groove 403 and a first groove 402. The two first grooves 402 are respectively located on the upper and lower sides of the second groove 403 and communicate with the second groove 403. Under the driving action of the positive and negative screw rod 304, the sliding plate 310 will drive the fixed pipe 311 to move out. In this way, the fixed pipe 311 will approach the limiting pipe 401 as the sliding plate 310 moves until it is inserted into the limiting pipe 401. In this way, the positioning structure body 3 will be further connected to the fan duct rack body 1 and the submarine pile 2. When the fixed pipe 311 continuously enters the second groove 403, the third sliding rod 316 on the fixed pipe 311 will squeeze the limiting pipe 401. In this way, the third sliding rod 316 will drive the pressing plate 312 and the first magnetic plate 315 to move, so that the first magnetic plate 315 acts between the two second magnetic plates 317. In this way, the two limiting posts 313 will be moved out, so that the limiting posts 313 will be inserted into the first groove 402. The connection between the fixed pipe 311 and the limiting pipe 401 is not only an insertion connection, but also forms a self-locking, effectively solving the problem of loosening of the bolts after long-term use and greatly enhancing the stability.

[0032] As Figures 8 to 12 shown, the inside of the positive and negative screw rod 304 is a hollow structure. The driving structure further includes a driving shaft 502. The driving shaft 502 is located inside the positive and negative screw rod 304. Two second auxiliary strips 509 and two third auxiliary strips 510 are fixedly installed on the driving shaft 502.

[0033] The impact structure includes a drive box 501, which is fixedly connected to the first mounting box 301. A rotating tube 504 is rotatably mounted on the drive box 501. A torsion spring 511 is installed inside the drive box 501. One end of the torsion spring 511 is connected to the rotating tube 504, and the other end of the torsion spring 511 is also connected to the rotating tube 504. A first connection groove is formed inside the rotating tube 504 on the left side of the positive and negative screw rod 304, and a second connection groove is formed inside the rotating tube 504 on the right side of the positive and negative screw rod 304. The impact structure further includes a first auxiliary strip 505, which is fixedly connected to the rotating tube 504. A drive ring 507 is slidably connected to the rotating tube 504, and the drive ring 507 is slidably connected to the first auxiliary strip 505. The impact structure also includes a mixing tube 503, which is fixedly connected to the drive ring 507. A fourth spring 513 is arranged inside the mixing tube 503. One end of the fourth spring 513 is fixedly connected to the mixing tube 503, and the other end of the fourth spring 513 is fixedly connected to an extension column 512. The impact structure further includes a third magnetic plate 506, which is fixedly connected to the drive ring 507. A plurality of fourth magnetic plates 508 are fixedly mounted on the drive box 501. The magnetic forces of the plurality of fourth magnetic plates 508 are different, and the magnetic poles of the plurality of fourth magnetic plates 508 are arranged staggeredly.

[0034] When the positive and negative screw rod 304 rotates, the positive and negative screw rod 304 will rotate due to the drive shaft 502. The drive shaft 502 will drive the two rotating tubes 504 to rotate due to the second auxiliary bar 509 and the third auxiliary bar 510. In this way, the rotating tube 504 will drive the coil spring 511 to rotate and store energy. When the drive shaft 502 has finished rotating and it is necessary to pour slurry into the inside of the fan duct rack body 1, the drive shaft 502 can be pulled to move the second auxiliary bar 509 and the third auxiliary bar 510. In this way, the second auxiliary bar 509 and the third auxiliary bar 510 will disengage from the two rotating tubes 504, so that the rotating tubes 504 will lose their restraint and will rotate under the action of the coil spring 511. In this way, the rotating tube 504 will drive the mixing tube 503 to rotate, and the mixing tube 503 will drive the extension column 512 to rotate. The rotation of the mixing tube 503 and the fourth spring 513 will impact the connecting tube 302, causing the connecting tube 302 to vibrate. And this vibration will also be transmitted to the fan duct rack body 1 and the submarine pile 2. And during the rotation process, the extension column 512 will continuously extend due to centrifugal force, so that it can impact the connecting tube 302 at different lengths. And because after the impact, the centrifugal force decreases, and under the action of the fourth spring 513, the extension column 512 retracts. In this way, the length of the extension column 512 will continuously change, so that the vibration force acting on the connecting tube 302 will be different, and the slurry can be vibrated to different degrees, making it more dense and avoiding hollowness. And when the mixing tube 503 rotates, the third magnetic plate 506 will also rotate together. In this way, the third magnetic plate 506 will act on different fourth magnetic plates 508. The interaction relationship between the third magnetic plate 506 and the multiple fourth magnetic plates 508 continuously switches between repulsion and attraction, and the intensity of repulsion and attraction will also be different. In this way, the position of the mixing tube 503 will also be different, so that it can act on the connecting tube 302 at different positions, enabling the vibration to act on the connecting tube 302 more comprehensively and better densifying the slurry.

[0035] Working principle: First, prefabricate components such as the pile legs of the wind turbine jacket body 1 and the subsea piles 2 on land and transport them to the offshore construction location. Use the ship positioning system to hoist and insert the subsea piles 2 into the seabed, and then insert the pile legs into the subsea piles 2. Initially, connect the connecting pipe 302 to the wind turbine jacket body 1 and the subsea piles 2 with bolts. Rotate the positive and negative screw rod 304, which is rotatably connected to the first mounting box 301, to drive the threaded block 307 to move closer or farther away. The threaded block 307 is fixedly connected to the second mounting box 305 in the connecting structure, causing the second mounting box 305 to move and driving the first sliding rod 306 to move. Due to the magnetic force of the magnetic blocks, the first sliding rod 306 and the first mounting plate 303 cause the sliding plate 310 to move out of the second mounting box 305, driving the fixed pipe 311 to approach and insert into the limiting pipe 401. The third sliding rod 316 on the fixed pipe 311 presses against the limiting pipe 401, driving the pressure plate 312 and the first magnetic plate 315 to move, so that the limiting column 313 is inserted into the first groove 402 of the limiting pipe 401, realizing the stable connection of the positioning structure body 3 with the wind turbine jacket body 1 and the subsea piles 2, and reducing the force borne by the bolts.

[0036] When the positive and negative screw rod 304 rotates, due to the drive shaft 502 in its internal hollow structure, as well as the second auxiliary strip 509 and the third auxiliary strip 510 on the drive shaft 502, the rotating pipe 504 is driven to rotate, and the rotating pipe 504 stores energy in the coil spring 511. When pouring the slurry, pull the drive shaft 502 to disengage the second auxiliary strip 509 and the third auxiliary strip 510 from the rotating pipe 504. The rotating pipe 504 rotates under the action of the coil spring 511, driving the stirring pipe 503 to rotate. The extension column 512 connected by the fourth spring 513 inside the stirring pipe 503 continuously extends and retracts under the action of centrifugal force, hitting the connecting pipe 302, causing the connecting pipe 302 to vibrate and transmit the vibration to the wind turbine jacket body 1 and the subsea piles 2. Different lengths of impacts generate different vibration forces, making the slurry more dense. When the stirring pipe 503 rotates, the third magnetic plate 506 on it interacts with the fourth magnetic plates 508 with different magnetic forces and alternating magnetic poles on the drive box 501, causing the position of the stirring pipe 503 to change, comprehensively vibrating the connecting pipe 302 and better densifying the slurry.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning structure for grouting installation of the jacket foundation of an offshore wind turbine, comprising a wind turbine jacket body (1), a submarine pile (2), and a positioning structure body (3), characterized in that: Among them, The positioning structure body (3) is used for connecting the wind turbine jacket body (1) and the submarine pile (2); Among them, the positioning structure body (3) includes a connecting pipe (302), a first installation box (301) is fixedly installed inside the connecting pipe (302), a driving structure is rotatably installed on the first installation box (301), and a connecting structure is fixedly installed on the driving structure; Among them, a limiting pipe (401) is provided inside the wind turbine jacket body (1) and the submarine pile (2). During the connection process of the positioning structure body (3) with the wind turbine jacket body (1) and the submarine pile (2), the driving structure expands the connecting structure and locks it with the limiting pipe (401); Among them, an impact structure is fixedly installed on the driving structure. The impact structure includes an extendable extension column (512). When the impact structure is driven to rotate by the driving structure, the extension column (512) vibrates the concrete under the action of centrifugal force.

2. The positioning structure for grouting installation of the jacket foundation of an offshore wind turbine according to claim 1, wherein: The driving structure includes a positive and negative screw rod (304). The positive and negative screw rod (304) is rotatably connected to the first installation box (301). A threaded block (307) is threadedly connected to the positive and negative screw rod (304), and the threaded block (307) is fixedly connected to the connecting structure.

3. The positioning structure for grouting installation of the jacket foundation of an offshore wind turbine according to claim 2, characterized in that: The connecting structure includes a second installation box (305). The second installation box (305) is fixedly connected to the threaded block (307). A sliding plate (310) is slidably connected inside the second installation box (305). The top of the sliding plate (310) is connected to the second installation box (305) through a first spring (308). A second sliding rod (309) is fixedly installed on the top of the sliding plate (310). The second sliding rod (309) penetrates through the threaded block (307) and is slidably connected to the threaded block (307). A first sliding rod (306) is fixedly installed on the top of the second sliding rod (309). A first installation plate (303) is fixedly installed on the second installation box (305).

4. A positioning structure for grouting during the installation of a jacket foundation for an offshore wind turbine according to claim 3, characterized in that: The connecting structure further includes a fixing tube (311), an installation groove is formed inside the fixing tube (311), the fixing tube (311) is fixedly connected to the sliding plate (310), a pressing plate (312) is slidably connected to the fixing tube (311), a third sliding rod (316) is fixedly connected to the pressing plate (312), a third spring (318) is sleeved on the third sliding rod (316), one end of the third spring (318) is fixedly connected to the pressing plate (312), the other end of the third spring (318) is fixedly connected to the pressing plate (312), a limiting column (313) is slidably connected to the fixing tube (311), a second magnetic plate (317) is fixedly installed on the fixing tube (311), the second magnetic plate (317) is connected to the hollowed-out plate (319) through a second spring (314), the hollowed-out plate (319) is fixedly connected to the fixing tube (311), and a first magnetic plate (315) is arranged between the two hollowed-out plates (319).

5. The positioning structure for grouting installation of the jacket foundation of an offshore wind turbine according to claim 4, characterized in that: The limiting tube (401) is provided with a second groove (403) and a first groove (402), and the two first grooves (402) are respectively located on the upper and lower sides of the second groove (403) and communicate with the second groove (403).

6. The positioning structure for grouting during the installation of a jacket foundation for an offshore wind turbine according to claim 5, characterized in that: The inside of the positive and negative screw rod (304) is a hollow structure, and the driving structure further includes a driving shaft (502), the driving shaft (502) is located inside the positive and negative screw rod (304), and two second auxiliary strips (509) and two third auxiliary strips (510) are fixedly installed on the driving shaft (502).

7. A positioning structure for grouting installation of a jacket foundation of an offshore wind turbine according to claim 6, characterized in that: The impact structure includes a driving box (501), the driving box (501) is fixedly connected to the first installation box (301), a rotating tube (504) is rotatably installed on the driving box (501), a coil spring (511) is installed inside the driving box (501), one end of the coil spring (511) is connected to the rotating tube (504), the other end of the coil spring (511) is connected to the rotating tube (504), a first connection groove is formed inside the rotating tube (504) on the left side of the positive and negative screw rod (304), and a second connection groove is formed inside the rotating tube (504) on the right side of the positive and negative screw rod (304).

8. A positioning structure for grouting installation of a jacket foundation of an offshore wind turbine according to claim 7, characterized in that: The impact structure further includes a first auxiliary strip (505), the first auxiliary strip (505) is fixedly connected to the rotating tube (504), a driving ring (507) is slidably connected to the rotating tube (504), and the driving ring (507) is slidably connected to the first auxiliary strip (505).

9. A positioning structure for grouting installation of a jacket foundation of an offshore wind turbine according to claim 8, characterized in that: The impact structure further includes a stirring tube (503), the stirring tube (503) is fixedly connected to the driving ring (507), a fourth spring (513) is arranged inside the stirring tube (503), one end of the fourth spring (513) is fixedly connected to the stirring tube (503), and the other end of the fourth spring (513) is fixedly connected to the extension column (512).

10. The positioning structure for grouting during the installation of a jacket foundation for an offshore wind turbine according to claim 9, wherein: The impact structure further includes a third magnetic plate (506), the third magnetic plate (506) is fixedly connected to the drive ring (507), a plurality of fourth magnetic plates (508) are fixedly installed on the drive box (501), the magnetic forces of the plurality of fourth magnetic plates (508) are different, and the magnetic poles of the plurality of fourth magnetic plates (508) are arranged staggeredly.

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