Cylinder foundation with stable structure

Abstract

The invention relates to the technical field of offshore wind power, in particular to a barrel type foundation with a stable structure, which comprises a vertically arranged truss structure, a suction barrel with a downward opening is arranged at the lower end of the truss structure, and a transition section for connecting a wind turbine generator is arranged at the upper end of the truss structure. A communicating pipe communicating the inner side and the outer side of the suction barrel is arranged at the top of the suction barrel, and a suction pipe and a grouting pipe are vertically installed on the outer wall of the suction barrel. A resistance assembly is arranged close to the bottom of the suction barrel; the lower end of the suction pipe and the lower end of the grouting pipe are arranged below and above the resistance assembly respectively. The problems that in the prior art, when an offshore wind power foundation is under the long-term effect of wind-wave-flow force loads and the pulling resistance of the lower portion is insufficient, an upper draught fan structure has the inclination and overturning risks at any time are solved.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power technology, and specifically to a cylindrical foundation with a stable structure. Background Technology

[0002] As the world actively moves towards a green energy transition, offshore wind power, with its unique advantages, has become a shining new star in the energy sector. Compared to onshore wind power, offshore wind power has significant advantages: it features low turbulence and excellent wind resources, enabling efficient wind energy capture; moreover, it does not occupy valuable arable land resources and can absorb electricity locally according to the electricity demand of coastal areas, greatly aligning with the strategic needs of sustainable development. my country's eastern coastal areas possess extremely rich offshore wind power resources.

[0003] With the continuous advancement of offshore wind power technology and the strong impetus of a series of favorable policies, my country's offshore wind power industry is making unprecedented strides towards deep-sea deployment, high capacity, and low cost. In this booming process, offshore wind turbines, as the core power generation unit, face extremely harsh environmental challenges. They must not only bear enormous wind loads but also constantly withstand the complex and ever-changing environmental loads from waves, ocean currents, and other factors.

[0004] Given the vastly different water depths and seabed geological conditions in various sea areas, selecting the appropriate offshore wind turbine foundation type is crucial to ensuring the stable operation of offshore wind farms. Currently, gravity foundations, monopile foundations, and cylindrical foundations are widely used. Among these, cylindrical foundations are favored by the industry due to their significant advantages such as short construction cycles and simple, efficient installation methods, and have emerged as a prominent feature in numerous offshore wind farm projects.

[0005] However, a deeper analysis of existing technologies reveals that, whether it is a common single-cylinder foundation or an advanced multi-cylinder foundation, their basic working principle is to rely on the barrel body to adhere to the seabed, thereby providing a stable "protective umbrella" and solid support for the wind turbine units above.

[0006] Large wind turbine structures vibrate violently under long-term wind-wave-current dynamic loads. Existing pure steel or steel-concrete cylindrical foundations are approximately rigid, causing the upper vibrations to be directly transmitted to the lower flexible foundation soil.

[0007] The mechanical strength of the foundation soil gradually weakens due to long-term vibration, and the pull-out resistance of the cylindrical foundation decreases accordingly. This is crucial for the stability of offshore wind power installations. When the pull-out resistance is insufficient, the upper wind turbine structure is at risk of tilting or overturning at any time. Summary of the Invention

[0008] The purpose of this invention is to provide a cylindrical foundation with a stable structure, which solves the problem in the prior art that when the lower part of the offshore wind turbine foundation is under long-term wind-wave-current dynamic loads, the upper wind turbine structure is at risk of tilting or overturning at any time.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A cylindrical foundation with a stable structure includes a vertically arranged truss structure. The lower end of the truss structure has a suction cylinder with an opening facing downwards. The upper end of the truss structure has a transition section for connecting a wind turbine. The top of the suction cylinder has a connecting pipe that connects the inner and outer sides of the suction cylinder. A suction pipe and a grouting pipe are vertically installed on the outer wall of the suction cylinder. A resistance component is located near the bottom of the suction cylinder. The lower ends of the suction pipe and the grouting pipe are respectively located below and above the resistance component.

[0011] A further technical solution is that the resistance component includes a rotating shaft and a resistance plate. A rotating hole connecting the inner and outer sides of the suction cylinder is provided near the lower end. The rotating shaft is rotatably positioned within the rotating hole, with its two ends respectively placed on the inner and outer sides of the suction cylinder. Resistance plates are connected to both sides of the rotating shaft. A first baffle and a second baffle are protruding from the left and upper sides of the rotating hole on the outer wall of the suction cylinder, respectively. The resistance plate is positioned between the first and second baffles, and when the resistance plate is in contact with the second baffle, the angle between the resistance plate and the horizontal plane is less than 90 degrees. The lower end of the suction pipe is positioned below the first baffle, and the lower end of the grouting pipe is positioned above the second baffle.

[0012] A further technical solution is that the outer wall of the suction cylinder is provided with a first through hole that penetrates both the inner and outer sides at the position corresponding to the lower end of the suction pipe, and the lower end of the suction pipe is connected to the first through hole; the outer wall of the suction cylinder is provided with a second through hole that penetrates both the inner and outer sides at the position corresponding to the lower end of the grouting pipe, and the lower end of the grouting pipe is connected to the second through hole.

[0013] A further technical solution is that a traction component is installed on the top of the suction cylinder, and the lower end of the traction rope of the traction component passes around the lower side of the first stop post and is connected to the lower side of the resistance plate.

[0014] A further technical solution is that the traction assembly includes a housing, a traction block, a spring, a screw, and a traction rope. The housing has a cylindrical traction cavity, with traction holes and control holes at both ends of the traction cavity that communicate with the ends of the housing. The traction block is slidably disposed within the traction cavity along both ends. The spring is disposed between the traction block and the traction hole, with both ends respectively contacting the top walls of the traction cavity where the traction block and traction hole are located. A threaded tube is slidably disposed within the control hole. The side wall of the housing has a threaded hole that communicates with the wall of the control hole. A fixing bolt is threadedly connected within the threaded hole. A fixing hole matching the fixing bolt is provided on the outer wall of the threaded tube. The middle thread of the screw is threadedly installed within the threaded tube, with one end of the screw rotating and engaging with the side of the traction block away from the spring within the traction cavity, and the other end positioned outside the housing.

[0015] A further technical solution is that a rotating groove is recessed at the position where the traction block and the screw rotate and fit together, and the end of the screw is rotatably set in the rotating groove; a number of sliding blocks are protruding around the outer wall of the traction block, and the outer wall of the sliding blocks slides and fits against the cavity wall of the traction cavity.

[0016] A further technical solution is that a detection hole is provided on the upper side of the housing between the traction block and the control hole, a detection plate is installed in the detection hole, the lower end of the detection plate is placed in the traction cavity, and a pressure sensor is installed on the side facing the traction block.

[0017] A further technical solution is that the traction rope includes a first section and a second section. Several first guide rings are vertically arranged on the outer wall of the suction cylinder, and second guide rings are arranged at the top and side corners of the suction cylinder. One end of the first section is connected to the traction block, and the other end passes through the second guide ring and is placed on the side of the suction cylinder. The lower end of the second section is connected to the resistance plate, and the upper end passes through several first guide rings in sequence and is connected to the lower end of the first section through a connector.

[0018] A further technical solution is that a high-pressure water pipe is vertically installed on the outer wall of the suction cylinder, the lower end of the suction pipe is bent to form a horizontal suction section, the lower end of the high-pressure water pipe is bent on the upper side of the horizontal suction section to form a horizontal water spray section, and a high-pressure nozzle is installed at the end of the horizontal water spray section.

[0019] A further technical solution is that the inner wall of the horizontal water spray section is provided with a first limiting ring and a second limiting ring from the end inwards. The high-pressure nozzle is cylindrical and has a main water chamber inside. One end of the high-pressure nozzle is an open end connected to the main water chamber, and the other end is a closed end. A third limiting ring is provided around the outer wall of the open end. The third limiting ring slides and fits against the inner wall of the horizontal water spray section between the first limiting ring and the second limiting ring. The high-pressure nozzle has several water spray holes connected to the main water chamber on the outer wall of the closed end. The direction of the water spray holes is spiral from the inside to the outside.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting a connecting pipe, seawater can be drawn from the suction cylinder by connecting a suction pump during installation, allowing the suction cylinder to gradually embed itself into the silt on the seabed. After embedding, grouting equipment is connected through the connecting pipe to grout the inner top of the suction cylinder, ensuring that there are no excess gaps in the inner top of the suction cylinder and improving its pull-out resistance; 2. By setting a suction pipe and a grouting pipe, after the suction cylinder is installed, the silt at the bottom of the suction cylinder is drawn out through the suction pipe, and grouting material is simultaneously filled into the drawn-out position through the grouting pipe. The grouting material forms an integral whole with the bottom of the suction cylinder with the help of the resistance component as a skeleton, thereby increasing the support radius of the bottom of the suction cylinder and improving its pull-out resistance; 3. The grouting material delivered by the grouting pipe at the bottom of the suction cylinder also strengthens the silt around the bottom of the suction cylinder, thereby providing better lateral support for the suction cylinder and effectively preventing the suction cylinder from tilting. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of a cylindrical foundation with a stable structure according to the present invention.

[0022] Figure 2 This is a schematic cross-sectional view of a suction cylinder with a stable cylindrical foundation according to the present invention.

[0023] Figure 3 This is a side view of a cylindrical foundation suction cylinder with a stable structure according to the present invention.

[0024] Figure 4 This is a schematic diagram of a traction component and traction rope for a cylindrical foundation with a stable structure according to the present invention.

[0025] Figure 5 This is a schematic cross-sectional view of the outer shell of a cylindrical foundation with a stable structure according to the present invention.

[0026] Figure 6 This is a schematic diagram of a traction block for a cylindrical foundation with a stable structure according to the present invention.

[0027] Figure 7 This is a schematic diagram of the first state of a high-pressure nozzle with a cylindrical foundation having a stable structure according to the present invention.

[0028] Figure 8 This is a schematic diagram of the second state of a high-pressure nozzle with a cylindrical foundation having a stable structure according to the present invention.

[0029] Figure 9 This is an enlarged view of a second state schematic diagram of a high-pressure nozzle with a stable cylindrical foundation according to the present invention.

[0030] Figure 10This is a schematic diagram of the cross-section of a high-pressure nozzle for a cylindrical foundation with a stable structure according to the present invention.

[0031] Icons: 1- Truss structure, 2- Suction cylinder, 3- Transition section, 4- Connecting pipe, 5- Suction pipe, 6- Grouting pipe, 7- Rotating shaft, 8- Resistance plate, 9- Rotating hole, 10- First stop post, 11- Second stop post, 12- First through hole, 13- Second through hole, 14- Traction rope, 15- Outer shell, 16- Traction block, 17- Spring, 18- Screw, 19- Traction chamber, 20- Traction hole, 21- Control hole, 22- Threaded pipe, 23- Threaded hole, 24- Fixing bolt, 2 5-Fixing hole, 26-Rotating groove, 27-Sliding block, 28-Detection hole, 29-Detection plate, 30-Pressure sensor, 31-First section body, 32-Second section body, 33-First guide ring, 34-Second guide ring, 35-Connector, 36-High-pressure water pipe, 37-Suction horizontal section, 38-Water spray horizontal section, 39-High-pressure nozzle, 40-First limiting ring, 41-Second limiting ring, 42-Main water chamber, 43-Third limiting ring, 44-Water spray hole, 45-Connecting plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] Figures 1 to 10 The image shows an embodiment of the present invention.

[0034] Example 1:

[0035] like Figure 1-6As shown, a cylindrical foundation with a stable structure includes a vertically arranged truss structure 1. A suction cylinder 2 with its opening facing downwards is located at the lower end of the truss structure 1. A transition section 3 for connecting a wind turbine is located at the upper end of the truss structure 1. A connecting pipe 4 is provided at the top of the suction cylinder 2, connecting the inner and outer sides of the suction cylinder 2. A suction pipe 5 and a grouting pipe 6 are vertically installed on the outer wall of the suction cylinder 2. A resistance component is located near the bottom of the suction cylinder 2. The lower ends of the suction pipe 5 and the grouting pipe 6 are respectively located below and above the resistance component. By providing the connecting pipe 4, seawater can be drawn from the suction cylinder 2 through a suction pump connected to the connecting pipe 4 during installation, allowing the suction cylinder 2 to gradually embed itself into the seabed silt. After embedding, grouting equipment is connected through the connecting pipe 4 to grout the inner top of the suction cylinder 2, eliminating any excess gaps in the inner top of the suction cylinder 2 and improving its pull-out resistance. By setting up suction pipe 5 and grouting pipe 6, after the suction cylinder 2 is installed, the suction pipe 5 extracts the silt from the bottom of the suction cylinder 2, and at the same time, the grouting pipe 6 fills the extracted position with grout. The grout, with the help of the resistance component as a skeleton, forms an integral whole with the bottom of the suction cylinder 2, thereby increasing the support radius of the bottom of the suction cylinder 2 and improving the pull-out resistance of the suction cylinder 2. The grout delivered by the grouting pipe 6 to the bottom of the suction cylinder 2 also strengthens the silt around the bottom of the suction cylinder 2, thereby providing better lateral support for the suction cylinder 2 and effectively preventing the suction cylinder 2 from tilting.

[0036] The resistance assembly includes a rotating shaft 7 and a resistance plate 8. A rotating hole 9 connecting the inner and outer sides of the suction cylinder 2 is provided near the lower end of the suction cylinder 2. The rotating shaft 7 is rotatably disposed in the rotating hole 9, with its two ends respectively placed on the inner and outer sides of the suction cylinder 2. The rotating shaft 7 is connected to the resistance plate 8 on both the inner and outer sides of the suction cylinder. A first baffle 10 and a second baffle 11 are respectively protruding on the left and upper sides of the rotating hole 9 on the outer wall of the suction cylinder 2. The resistance plate 8 is disposed between the first baffle 10 and the second baffle 11, and when the resistance plate 8 is in contact with the second baffle 11, the angle between the resistance plate 8 and the horizontal plane is less than 90 degrees. The lower end of the suction pipe 5 is placed below the first baffle 10, and the lower end of the grouting pipe 6 is placed above the second baffle 11. When the suction cylinder 2 is installed, as it moves downwards, the silt below pushes the resistance plate 8 to rotate in conjunction with the rotating shaft 7 and the rotating hole 9, causing the resistance plate 8 to adhere to the second stop post 11, thereby reducing the resistance during the installation of the suction cylinder 2. After the suction cylinder 2 is installed, when grouting is performed on the bottom of the suction cylinder 2 through the suction pipe 5 and the grouting pipe 6, the silt below the resistance plate 8 is removed by the suction pipe 5, and grout is filled above the resistance plate 8. This causes the resistance plate 8 to gradually rotate until it adheres to the first stop post 10, making the resistance plate 8 more horizontal. This not only increases the pull-out resistance of the suction cylinder 2, but also, after the grout solidifies, the resistance plate 8, as the skeleton of the grout, provides a larger horizontal bonding area, resulting in better overall integrity after the grout solidifies. This further enhances the pull-out resistance of the suction cylinder 2 by utilizing the large volume of grout.

[0037] The outer wall of the suction cylinder 2 has a first through hole 12 at the lower end of the suction pipe 5, connecting both the inner and outer sides. The lower end of the suction pipe 5 is connected to the first through hole 12. The outer wall of the suction cylinder 2 has a second through hole 13 at the lower end of the grouting pipe 6, connecting both the inner and outer sides. The lower end of the grouting pipe 6 is connected to the second through hole 13. By providing the first through hole 12, the sludge located below the resistance plate 8 inside the suction cylinder 2 can be extracted. At the same time, in conjunction with the second through hole 13, grout material is filled above the resistance plate 8 inside the suction cylinder 2. Thus, grout material is filled both inside and outside the suction cylinder 2. After the grout material at the bottom of the suction cylinder 2 solidifies, it forms a grout material base that provides stability to the bottom of the suction cylinder 2.

[0038] A traction assembly is installed on the top of the suction cylinder 2. The lower end of the traction rope 14 of the traction assembly passes over the lower side of the first stop post 10 and is connected to the lower side of the resistance plate 8. By setting up the traction assembly and the traction rope 14, the resistance plate 8 can be assisted to rotate when the suction pipe 5 is pumping sludge and the grouting pipe 6 is injecting grout, so that the resistance plate 8 can be correctly attached to the upper side of the first stop post 10 and keep the resistance plate 8 in a horizontal state.

[0039] The traction assembly includes a housing 15, a traction block 16, a spring 17, a screw 18, and a traction rope 14. The housing 15 contains a cylindrical traction cavity 19. At both ends of the traction cavity 19 are traction holes 20 and control holes 21, respectively, which communicate with the ends of the housing 15. The traction block 16 is slidably disposed within the traction cavity 19 along both ends. The spring 17 is disposed between the traction block 16 and the traction holes 20, with both ends contacting the walls of the traction cavity 19 where the traction block 16 and the traction holes 20 are located. The control hole 21 is slidably provided with a threaded tube 22, and the side wall of the outer shell 15 is provided with a threaded hole 23 that communicates with the wall of the control hole 21. A fixing bolt 24 is threadedly connected in the threaded hole 23, and a fixing hole 25 matching the fixing bolt 24 is provided on the outer wall of the threaded tube 22. The middle thread of the screw 18 is threadedly installed in the threaded tube 22, and one end of the screw 18 is rotated and attached to the side of the traction block 16 away from the spring 17 in the traction cavity 19, while the other end is placed outside the outer shell 15. With this setup, the outer casing 15 is installed on top of the suction cylinder 2, and the threaded tube 22 is fixed in the control hole 21 using the fixing bolt 24. Then, the screw 18 is installed in the threaded tube 22. By rotating the screw 18, the screw 18 moves towards the traction hole 20 by pushing against the traction block 16 in the traction chamber 19. At the same time, the spring 17 is compressed. After the spring 17 is compressed, the lower end of the traction rope 14 is passed around the first stop post 10 and connected to the lower side of the resistance plate 8. It should be noted that when connecting to the resistance plate 8, the resistance plate 8 needs to be in contact with the second stop post 11. This way, the traction rope 14 is in a taut state after the connection is completed, thereby avoiding the traction rope 14 causing resistance to the rotation of the resistance plate 8 when the suction cylinder 2 is installed. After the suction cylinder 2 is installed, when the suction pipe 5 and grouting pipe 6 begin operation, the underwater robot rotates the fixing bolt 24, causing the lower end of the fixing bolt 24 to retract from the fixing hole 25 into the threaded hole 23. This allows the threaded pipe 22 to slide within the control hole 21, preventing the screw 18 from exerting thrust on the traction block 16. Under the action of the spring 17, the traction block 16 is pushed away from the traction hole 20, thereby pulling the traction rope 14 back into the traction chamber 19. Then, with the help of the lower end of the traction rope 14, the auxiliary resistance plate 8 gradually rotates to a horizontal position and attaches to the upper side of the first stop post 10. The outer shell 15 is detachably installed on the upper side of the suction cylinder 2 via the connecting plate 45. After the traction work of the traction rope 14 is completed, the traction assembly can be removed from the upper side of the suction cylinder 2 for recycling, facilitating reuse during the next installation of the suction cylinder 2.

[0040] A rotating groove 26 is recessed at the position where the traction block 16 and the screw 18 rotate and engage, and the end of the screw 18 is rotatably positioned within the rotating groove 26. Several sliding blocks 27 are protruding around the outer wall of the traction block 16, and the outer wall of the sliding blocks 27 slides and engages with the cavity wall of the traction chamber 19. The rotating groove 26 positions the end of the screw 18, preventing it from shifting when it is screwed in, thus allowing the screw 18 to linearly push the traction block 16. The sliding blocks 27 reduce the friction between the traction block 16 and the cavity wall of the traction chamber 19, allowing the traction block 16 to slide smoothly.

[0041] A detection hole 28 is provided on the upper side of the outer casing 15 between the traction block 16 and the control hole 21. A detection plate 29 is installed inside the detection hole 28, with its lower end placed inside the traction cavity 19. A pressure sensor 30 is installed on the side facing the traction block 16. By setting the detection plate 29 and the pressure sensor 30, the distance between the traction block 16 and the detection plate 29 after controlling the compression of the spring 17 can be made the same as the distance the traction rope 14 moves when the resistance plate 8 moves from the second stop post 11 to the first stop post 10. In this way, when the resistance plate 8 is in contact with the first stop post 10, the traction block 16 is exactly in contact with the detection plate 29, thereby triggering the pressure sensor 30. The pressure value generated by the pressure sensor 30 allows the operator to easily determine whether the resistance plate 8 has rotated to the correct position.

[0042] The traction rope 14 includes a first section 31 and a second section 32. Several first guide rings 33 are vertically arranged on the outer wall of the suction cylinder 2. Second guide rings 34 are provided at the top and side corners of the suction cylinder 2. One end of the first section 31 is connected to the traction block 16, and the other end passes through the second guide ring 34 and rests on the side of the suction cylinder 2. The lower end of the second section 32 is connected to the resistance plate 8, and the upper end passes through several first guide rings 33 in sequence before being connected to the lower end of the first section 31 via a connector 35. A first guide ring 33 is also provided on the lower side of the first stop post 10. After the lower side of the second section 32 is connected to the resistance plate 8, it first passes through the first guide ring 33 on the lower side of the first stop post 10 before passing through the other first guide rings 33. This prevents the second section 32 from slipping off the lower side of the first stop post 10, thus preventing the traction rope 14 from functioning properly. The second guide rings 34 serve as supports at the bends of the traction rope 14. By setting the connector 35, the first segment 31 and the second segment 32 can be disconnected from the connector 35 when the traction assembly is recovered.

[0043] Example 2:

[0044] Based on Example 1, such as Figure 7-10As shown, a high-pressure water pipe 36 is vertically installed on the outer wall of the suction cylinder 2. The lower end of the suction pipe 5 is bent to form a horizontal suction section 37. The lower end of the high-pressure water pipe 36 is bent above the horizontal suction section 37 to form a horizontal spray section 38. A high-pressure nozzle 39 is installed at the end of the horizontal spray section 38. This arrangement, with the help of the high-pressure water pipe 36 and the high-pressure nozzle 39, allows the high-pressure water flow to dilute the sludge near the lower end of the suction pipe 5 during operation, making it easier for the suction pipe 5 to extract the sludge. The water volume sprayed by the high-pressure nozzle 39 is half the amount extracted by the suction pipe 5. This prevents the water flow from the high-pressure nozzle 39 from filling the extracted space after sludge extraction, thus ensuring proper filling of the grouting material. The water spray horizontal section 38 is positioned above the suction horizontal section 37. When the suction cylinder 2 is lowered and installed, the suction horizontal section 37 can be used to push away the silt. This can protect the water spray horizontal section 38 and prevent the high-pressure nozzle 39 from being damaged during the descent of the suction cylinder 2.

[0045] The inner wall of the horizontal water spray section 38 is provided with a first limiting ring 40 and a second limiting ring 41 in sequence from the end inward. The high-pressure nozzle 39 is cylindrical and has a main water chamber 42 inside. One end of the high-pressure nozzle 39 is an open end connected to the main water chamber 42, and the other end is a closed end. A third limiting ring 43 is provided around the outer wall of the open end. The third limiting ring 43 slides and fits against the inner wall of the horizontal water spray section 38 between the first limiting ring 40 and the second limiting ring 41. The high-pressure nozzle 39 has a number of water spray holes 44 connected to the main water chamber 42 on the outer wall of the closed end. The holes of the water spray holes 44 are spiral from the inside to the outside. This design allows the high-pressure nozzle 39 to be pushed back into the horizontal spray section 38 when it is not in operation, thus protecting it. When the high-pressure nozzle 39 is needed, the high-pressure water flow from the horizontal spray section 38 enters the main water chamber 42, pushing the closed section of the nozzle 39 from the horizontal spray section 38 to the outside. This places the spray hole 44 outside the horizontal spray section 38, allowing water to be sprayed from the main water chamber 42. The spiral shape of the spray hole 44 allows the high-pressure nozzle 39 to rotate when multiple spray holes 44 are spraying water simultaneously. This rotating high-pressure water flow stirs the silt around the suction horizontal section 37, facilitating better extraction.

[0046] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A cylindrical foundation with a stable structure, comprising a vertically arranged truss structure (1), wherein the lower end of the truss structure (1) is provided with a suction cylinder (2) with its opening facing downwards, and the upper end of the truss structure (1) is provided with a transition section (3) for connecting a wind turbine generator, characterized in that, The top of the suction cylinder (2) is provided with a connecting pipe (4) that connects the inside and outside of the suction cylinder (2). A suction pipe (5) and a grouting pipe (6) are vertically installed on the outer wall of the suction cylinder (2). A resistance component is provided near the bottom of the suction cylinder (2). The lower ends of the suction pipe (5) and the grouting pipe (6) are respectively located below and above the resistance component.

2. The cylindrical foundation with a stable structure according to claim 1, characterized in that: The resistance assembly includes a rotating shaft (7) and a resistance plate (8). The suction cylinder (2) is provided with a rotating hole (9) near its lower end, which connects the inner and outer sides of the suction cylinder (2). The rotating shaft (7) is rotatably disposed in the rotating hole (9). The two ends of the rotating shaft (7) are respectively placed on the inner and outer sides of the suction cylinder (2). The resistance plate (8) is connected to both the inner and outer sides of the suction cylinder. The outer wall of the suction cylinder (2) is provided with a first baffle (10) and a second baffle (11) protruding on the left and upper sides of the rotating hole (9), respectively. The resistance plate (8) is disposed between the first baffle (10) and the second baffle (11). When the resistance plate (8) is in contact with the second baffle (11), the angle between the resistance plate (8) and the horizontal plane is less than 90 degrees. The lower end of the suction pipe (5) is placed below the first baffle (10), and the lower end of the grouting pipe (6) is placed above the second baffle (11).

3. A cylindrical foundation with a stable structure according to claim 2, characterized in that: The outer wall of the suction cylinder (2) is provided with a first through hole (12) that runs through both the inner and outer sides at the lower end of the corresponding suction pipe (5), and the lower end of the suction pipe (5) is connected to the first through hole (12); the outer wall of the suction cylinder (2) is provided with a second through hole (13) that runs through both the inner and outer sides at the lower end of the corresponding grouting pipe (6), and the lower end of the grouting pipe (6) is connected to the second through hole (13).

4. A cylindrical foundation with a stable structure according to claim 2, characterized in that: The suction cylinder (2) is equipped with a traction assembly at its top. The lower end of the traction rope (14) of the traction assembly passes over the lower side of the first stop post (10) and is connected to the lower side of the resistance plate (8).

5. A cylindrical foundation with a stable structure according to claim 4, characterized in that: The traction assembly includes a housing (15), a traction block (16), a spring (17), a screw (18), and a traction rope (14). The housing (15) has a cylindrical traction cavity (19). The two ends of the traction cavity (19) are respectively provided with a traction hole (20) and a control hole (21) communicating with the two ends of the housing (15). The traction block (16) is slidably disposed in the traction cavity (19) along the two ends of the traction cavity (19). The spring (17) is disposed between the traction block (16) and the traction hole (20), and its two ends are respectively connected to the cavity wall of the traction cavity (19) where the traction block (16) and the traction hole (20) are located. Top contact connection; a threaded tube (22) is slidably provided in the control hole (21), and a threaded hole (23) connected to the wall of the control hole (21) is provided on the side wall of the outer shell (15). A fixing bolt (24) is threadedly connected in the threaded hole (23), and a fixing hole (25) matching the fixing bolt (24) is provided on the outer wall of the threaded tube (22); the middle thread of the screw (18) is threadedly installed in the threaded tube (22), and one end of the screw (18) rotates and fits against the side of the traction block (16) away from the spring (17) in the traction cavity (19), and the other end is placed outside the outer shell (15).

6. A cylindrical foundation with a stable structure according to claim 5, characterized in that: A rotating groove (26) is recessed at the position where the traction block (16) and the screw (18) rotate and fit together, and the end of the screw (18) is rotatably disposed in the rotating groove (26); a plurality of sliding blocks (27) are protruding around the outer wall of the traction block (16), and the outer wall of the sliding block (27) slides and fits together with the cavity wall of the traction cavity (19).

7. A cylindrical foundation with a stable structure according to claim 5, characterized in that: The upper side of the outer casing (15) is provided with a detection hole (28) between the traction block (16) and the control hole (21). A detection plate (29) is installed in the detection hole (28). The lower end of the detection plate (29) is placed in the traction cavity (19), and a pressure sensor (30) is installed on the side facing the traction block (16).

8. A cylindrical foundation with a stable structure according to claim 5, characterized in that: The traction rope (14) includes a first section (31) and a second section (32). The outer wall of the suction cylinder (2) is vertically provided with a number of first guide rings (33). The top and side corners of the suction cylinder (2) are provided with second guide rings (34). One end of the first section (31) is connected to the traction block (16), and the other end passes through the second guide ring (34) and is placed on the side of the suction cylinder (2). The lower end of the second section (32) is connected to the resistance plate (8), and the upper end passes through a number of first guide rings (33) in sequence and is connected to the lower end of the first section (31) through a connector (35).

9. A cylindrical foundation with a stable structure according to claim 1, characterized in that: A high-pressure water pipe (36) is vertically installed on the outer wall of the suction cylinder (2). The lower end of the suction pipe (5) is bent to form a horizontal suction section (37). The lower end of the high-pressure water pipe (36) is bent on the upper side of the horizontal suction section (37) to form a horizontal spray section (38). A high-pressure nozzle (39) is installed at the end of the horizontal spray section (38).

10. A cylindrical foundation with a stable structure according to claim 9, characterized in that: The inner wall of the horizontal water spray section (38) is provided with a first limiting ring (40) and a second limiting ring (41) from the end inward. The high-pressure nozzle (39) is cylindrical and has a main water chamber (42) inside. One end of the high-pressure nozzle (39) is an open end connected to the main water chamber (42), and the other end is a closed end. A third limiting ring (43) is provided around the outer wall of the open end. The third limiting ring (43) slides and fits against the inner wall of the horizontal water spray section (38) between the first limiting ring (40) and the second limiting ring (41). The high-pressure nozzle (39) has a number of water spray holes (44) connected to the main water chamber (42) on the outer wall of the closed end. The holes of the water spray holes (44) are spiral from the inside to the outside.

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