Offshore wind power composite cylindrical foundation with overturning reset function

Abstract

The invention relates to the field of offshore wind power foundations, in particular to an offshore wind power composite barrel type foundation with an overturning reset function, which comprises a vertically arranged truss structure, a foundation middle barrel and a plurality of foundation side barrels are arranged at the lower end of the truss structure, and the plurality of foundation side barrels are uniformly distributed along the circumferential direction of the foundation middle barrel; a transition section used for being connected with a wind turbine generator is arranged at the upper end of the truss structure, a plurality of branch pumping pipes are arranged on the inner top wall of the foundation middle barrel, one ends of the branch pumping pipes gather towards the center of the foundation middle barrel and are arranged on the upper side of the foundation middle barrel, and the ends, away from one another, of the branch pumping pipes extend into the foundation side barrels correspondingly. Rotating columns are vertically arranged at the tops of the multiple foundation side cylinders, and a reset rod is arranged between every two adjacent rotating columns; a hammering assembly is detachably installed on the upper side of the reset rod. The problem that in the prior art, a composite barrel type foundation is not provided with a structure for self-rescue or matched self-rescue after inclination occurs is solved.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power foundations, and particularly to an offshore wind power composite barrel foundation with an overturning reset function. Background Art

[0002] Offshore wind power is a technology that uses offshore wind energy to drive the rotation of the fan blades, and then converts the wind energy into electrical energy. As a renewable energy source, offshore wind energy is rich in resources, clean and pollution-free. Moreover, compared with onshore wind power generation technology, offshore wind power has the advantages of stable power generation, high utilization rate, large sea area, large power generation potential, low noise pollution, and close distance to the electricity load. It will neither affect the ecological environment nor cause serious consequences of over-exploitation of energy.

[0003] Offshore wind turbines not only have to withstand huge wind loads, but also complex environmental loads such as waves and ocean currents. For different offshore wind farms, the water depth and seabed geological conditions are different, so different types of offshore wind turbine foundations need to be considered.

[0004] In the prior art, the composite cylindrical foundation structure has the characteristics of self-floating towing and stable negative pressure sinking, and its installation and application in the offshore waters of China have been relatively popular. The composite cylindrical foundation combines the advantages of single cylinders and multi-cylinders, and has good stability and anti-overturning ability. Offshore wind turbines are tall structures, and the inclination of the cylindrical foundation has a direct impact on the normal operation of the upper wind turbine structure. According to the current specifications, to ensure the normal operation of the wind turbine, the maximum allowable inclination angle of the foundation is 0.5°. The marine environment where the offshore wind turbine foundation is located is extremely harsh. Under the long-term dynamic loads of wind, wave, and current, no matter how the anti-overturning ability is improved, the cylindrical foundation will eventually reach the maximum inclination angle within a certain period, thus reaching the limit. In order to prevent the wind power foundation from overturning after the inclination angle of the cylindrical foundation reaches the limit, measures are generally taken to intervene, prevent the wind power foundation from continuing to tilt, and improve its anti-overturning ability. For example, the Chinese invention patent with the application number CN202210587271.6 discloses an anti-overturning ability improvement device and method for an offshore wind power cylindrical foundation, belonging to the field of offshore wind power cylindrical foundations, and solves the problems that the traditional method for improving the anti-overturning ability of the foundation has huge construction risks and a long construction time, and cannot effectively improve the anti-overturning ability of the existing cylindrical foundation quickly. The anti-overturning ability improvement device provided by this invention includes a first steel hoop connector, a first composite anchor plate, and multiple steel pressure bars; multiple square channels are provided on both the first composite anchor plate and the first steel hoop connector, and the multiple steel pressure bars can be inserted into or pulled out of the square channels; an elastic component is arranged inside the first composite anchor plate. When the offshore wind power cylindrical foundation tilts, the steel pressure bars are pulled out, and when the first composite anchor plate expands under the action of the elastic component, the friction area between it and the seabed foundation increases, thereby providing a tensile force to the offshore wind power cylindrical foundation. This invention realizes the rapid improvement of the anti-overturning ability of the tilted offshore wind power cylindrical foundation.

[0005] As described in the above-mentioned published literature, currently, the improvement of the anti-overturning ability of wind power foundations mainly relies on adding external additional structures, and the wind power foundation itself does not have a structure that can self-rescue or cooperate with self-rescue after tilting. Summary of the Invention

[0006] The purpose of this invention is to provide an offshore wind power composite cylindrical foundation with an overturning reset function, and solve the problem that in the prior art, the composite cylindrical foundation does not have a structure that can self-rescue or cooperate with self-rescue after tilting.

[0007] To solve the above technical problems, this invention adopts the following technical solutions:

[0008] An offshore wind power composite cylindrical foundation with an overturning and resetting function, comprising a truss structure arranged vertically. At the lower end of the truss structure, there is a central foundation cylinder and a plurality of peripheral foundation cylinders, and the plurality of peripheral foundation cylinders are evenly distributed along the circumferential direction of the central foundation cylinder. At the upper end of the truss structure, there is a transition section for connecting a wind turbine unit. On the inner top wall of the central foundation cylinder, there are a plurality of support and extraction pipes. One ends of the plurality of support and extraction pipes converge towards the center of the central foundation cylinder, and the mutually approaching ends all pass upward through the wall of the central foundation cylinder and are located above the central foundation cylinder. The mutually separated ends of the plurality of support and extraction pipes respectively extend into the plurality of peripheral foundation cylinders; on the tops of the plurality of peripheral foundation cylinders, there are rotation columns arranged vertically. A reset rod is arranged between two adjacent rotation columns, and two ends of the reset rod are detachably connected to the two adjacent rotation columns respectively; a hammering component is detachably installed on the upper side of the reset rod.

[0009] A further technical solution is that a main extraction pipe is vertically installed at the center above the central foundation cylinder. The upper end of the main extraction pipe is sealed by a sealing plate. One ends of the plurality of support and extraction pipes that approach each other are all arranged vertically with their openings facing upward inside the main extraction pipe. On the sealing plate, there are a plurality of first threaded holes respectively corresponding to the upper ends of the plurality of support and extraction pipes one by one. In each of the plurality of first threaded holes, there is a first threaded rod threadedly and matingly connected. At the lower end of the first threaded rod, there is a sealing plug for sealing the support and extraction pipe. The upper end of the first threaded rod is located above the sealing plate; on the side wall of the main extraction pipe near the upper end, there is a connecting pipe communicating with the inside of the main extraction pipe. The connecting pipe is used to connect an external suction pump; on the connecting pipe, there is a first valve for controlling its on-off; at a position near the bottom of the main extraction pipe, there is a water inlet pipe communicating with the inside of the main extraction pipe. On the water inlet pipe, there is a second valve for controlling its on-off.

[0010] A further technical solution is that a rotation hole is arranged at the lower end of the first threaded rod. On the upper side of the sealing plug, there is a rotation rod arranged vertically. The upper part of the rotation rod is rotatably arranged in the rotation hole. A limiting ring groove is recessed on the outer wall around the upper part of the rotation rod. On the outer wall of the rotation rod, there is a second threaded hole communicating with the hole wall of the rotation hole. In the second threaded hole, there is a second threaded rod threadedly and matingly connected. One end of the second threaded rod located in the rotation hole is movably arranged in the limiting ring groove.

[0011] A further technical solution is that rotation rings are arranged at both ends of the reset rod. Each rotation ring includes a fixed half-ring and a movable half-ring. One end of the fixed half-ring is connected to one end of the reset rod, and the other end is rotatably connected to one end of the movable half-ring through a rotation shaft. The end of the movable half-ring away from the rotation shaft is detachably connected to the end of the reset rod through a pin; at the upper end of the rotation column, there is a limiting plate, and the diameter of the limiting plate is larger than the inner diameter of the rotation ring.

[0012] A further technical solution is that the hammering component includes a hammering pile. A hammering cavity is vertically arranged inside the hammering pile. A first traction machine is installed at the top of the hammering cavity. A traction rope of the first traction machine is connected with an electromagnet below the first traction machine. A hammering block is magnetically connected below the electromagnet.

[0013] A further technical solution is that two clamping plates are vertically arranged at intervals on the lower side of the hammering pile, and a inserting rod is vertically arranged between the two clamping plates. A jack is arranged at a position near the end of the reset rod. When the hammering component is installed on the reset rod, the inserting rod is inserted into the jack, and the two clamping plates are respectively clamped on both sides of the reset rod.

[0014] A further technical solution is that a second traction machine is installed on the lower side of the transition section. A hook is installed on the traction rope of the second traction machine. A hanging ring is arranged at a position near the end on the upper side of the reset rod.

[0015] A further technical solution is that a locking pipe is vertically arranged below the second traction machine. The outer wall of the locking pipe is connected with a truss structure through a fixed support. Arc-shaped clamping pieces are movably arranged on both opposite sides of the inner wall of the locking pipe. Third threaded holes penetrating inside and outside are arranged at positions corresponding to the two arc-shaped clamping pieces on the inner wall of the locking pipe. A third threaded rod is in threaded matching connection with the third threaded hole; an anti-falling ring is arranged on the inner wall of the locking pipe below the arc-shaped clamping piece.

[0016] A further technical solution is that an inner sleeve for separating the inside of the foundation middle cylinder into an inner layer and an outer layer is arranged inside the foundation middle cylinder. One ends of the plurality of support and extraction pipes far away from each other respectively extend to different positions in the inner layer and the outer layer of the plurality of foundation side cylinders.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the cylindrical foundation tilts at a certain angle after long-term use, the corresponding reset rod is rotated to the direction where the cylindrical foundation tilts upwards, and then the hammering component is installed at one end of the reset rod far away from the cylindrical foundation. The hammering component is used to hammer the reset rod to press down the tilted position of the cylindrical foundation. At the same time, the support and extraction pipes located at the tilted position are used to extract seawater, silt, sediment, etc. inside the cylindrical foundation, so that there is space for pressing down at this position, thereby cooperating with the hammering component to gradually press down the tilted position of the cylindrical foundation and gradually reset the tilted cylindrical foundation, and extending the service life of the cylindrical foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of a marine wind power composite cylindrical foundation with an overturning and resetting function according to the present invention.

[0019] Figure 2 It is an internal schematic diagram of the foundation middle cylinder and the foundation side cylinder of a marine wind power composite cylindrical foundation with an overturning and resetting function according to the present invention.

[0020] Figure 3 This is a schematic cross-sectional view of the main extraction pipe of a composite cylindrical foundation for offshore wind power with an overturning and reset function according to the present invention.

[0021] Figure 4 This is a side view of a composite cylindrical foundation for offshore wind power with an overturning and reset function according to the present invention.

[0022] Figure 5 For Figure 4 a partial enlarged schematic view at the marked position A in

[0023] Figure 6 This is a schematic view of the rotating ring of a composite cylindrical foundation for offshore wind power with an overturning and reset function according to the present invention.

[0024] Figure 7 This is a schematic cross-sectional view of the hammering assembly of a composite cylindrical foundation for offshore wind power with an overturning and reset function according to the present invention.

[0025] Figure 8 For Figure 4 a partial enlarged schematic view at the marked position B in

[0026] Figure 9 This is a schematic cross-sectional view of the locking pipe of a composite cylindrical foundation for offshore wind power with an overturning and reset function according to the present invention.

[0027] Icon: 1 - truss structure, 2 - middle cylinder of the foundation, 3 - side cylinder of the foundation, 4 - transition section, 5 - support extraction pipe, 6 - rotating column, 7 - reset rod, 8 - hammering assembly, 9 - main extraction pipe, 10 - sealing plate, 11 - first threaded hole, 12 - first threaded rod, 13 - sealing plug, 14 - connecting pipe, 15 - first valve, 16 - water inlet pipe, 17 - second valve, 18 - rotating hole, 19 - rotating rod, 20 - limiting ring groove, 21 - second threaded hole, 22 - second threaded rod, 23 - rotating ring, 24 - fixed half-ring, 25 - movable half-ring, 26 - rotating shaft, 27 - bolt, 28 - limiting plate, 29 - hammering pile, 30 - hammering cavity, 31 - first tractor, 32 - electromagnet, 33 - hammering block, 34 - clamping plate, 35 - inserting rod, 36 - inserting hole, 37 - second tractor, 38 - hook, 39 - hanging ring, 40 - locking pipe, 41 - fixed bracket, 42 - arc-shaped clamping piece, 43 - third threaded hole, 44 - third threaded rod, 45 - anti-falling ring, 46 - inner sleeve. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0029] Figures 1 to 9 The following shows an embodiment of the present invention.

[0030] Embodiment 1:

[0031] A composite cylindrical foundation for offshore wind power with an overturning reset function, comprising a truss structure 1 arranged vertically. At the lower end of the truss structure 1, there is a central foundation cylinder 2 and a plurality of peripheral foundation cylinders 3, and the plurality of peripheral foundation cylinders 3 are evenly distributed along the circumferential direction of the central foundation cylinder 2. At the upper end of the truss structure 1, there is a transition section 4 for connecting a wind turbine generator set. On the inner top wall of the central foundation cylinder 2, there are a plurality of support and extraction pipes 5. One ends of the plurality of support and extraction pipes 5 converge towards the center of the central foundation cylinder 2, and the mutually approaching ends all pass upward through the wall of the central foundation cylinder 2 and are located on the upper side of the central foundation cylinder 2. The mutually remote ends of the plurality of support and extraction pipes 5 respectively extend into the plurality of peripheral foundation cylinders 3, and the support and extraction pipes 5 are arranged in the peripheral foundation cylinders 3 in contact with the inner top wall of the peripheral foundation cylinders 3; Vertically arranged rotating columns 6 are provided at the tops of the plurality of peripheral foundation cylinders 3. Along the radial direction at the position corresponding to the rotating column 6 on the inner top of the peripheral foundation cylinder 3, there are strengthening ribs to enhance the strength at this position, so that when performing the reset hammering, the top of the peripheral foundation cylinder will not be deformed. A reset rod 7 is arranged between two adjacent rotating columns 6, and the two ends of the reset rod 7 are detachably connected to the two adjacent rotating columns 6 respectively; A hammering assembly 8 is detachably installed on the upper side of the reset rod 7. When the cylindrical foundation tilts by a certain angle after long-term use, the reset rod 7 at the corresponding position is rotated towards the direction where the cylindrical foundation tilts, and then the hammering assembly 8 is installed at the end of the reset rod 7 away from the cylindrical foundation. The hammering assembly 8 is used to hammer the reset rod 7 to press down the tilted position of the cylindrical foundation. At the same time, the support and extraction pipes 5 located at the tilted position are used to extract seawater, silt, sediment, etc. inside the cylindrical foundation, so that there is space for pressing down at this position, thereby cooperating with the hammering assembly 8 to gradually press down the tilted position of the cylindrical foundation and gradually reset the tilted cylindrical foundation, extending the service life of the cylindrical foundation.

[0032] A main pumping pipe 9 is vertically installed at the center of the upper side of the base middle tube 2, and the upper end of the main pumping pipe 9 is sealed by a sealing plate 10. The ends of multiple branch pumping pipes 5 that are close to each other are all opened and vertically arranged upward in the main pumping pipe 9. The sealing plate 10 is provided with multiple first threaded holes 11 that correspond to the upper ends of the multiple branch pumping pipes 5 one by one, and the multiple first threaded holes 11 are threadedly matched and connected with first threaded rods 12. The lower end of the first threaded rod 12 is provided with a sealing plug 13 for sealing the branch pumping pipe 5, and the upper end of the first threaded rod 12 is placed on the upper end of the sealing plate 10; a connecting pipe 14 that is connected to the inside of the main pumping pipe 9 is provided on the side wall near the upper end, and the connecting pipe 14 is used to connect an external suction pump; a first valve 15 for controlling the on-off thereof is provided on the connecting pipe 14; a water inlet pipe 16 that is connected to the inside of the main pumping pipe 9 is provided near the bottom of the main pumping pipe 9, and a second valve 17 for controlling the on-off thereof is provided on the water inlet pipe 16. After the installation of the barrel foundation is completed, the branch pump 5 is sealed by the sealing plug 13, and the main pump 9 is sealed by the first valve 15 and the second valve 17, so that seawater can be prevented from entering the foundation middle tube 2 and the foundation side tube 3 from the branch pump 5. When the barrel foundation is tilted, an external suction pump is connected to the connecting pipe 14, and at the same time, an underwater robot or a diver carrying a tool is used to screw the first threaded rod 12 used to block the branch pump 5 at the corresponding tilted position, so that the sealing plug 13 moves up from the upper end of the branch pump 5, so that when the external suction pump is started, part of the silt, seawater, or sediment in the tilted foundation side tube 3 can be extracted through the branch pump 5, so that there is space for this position to move down. By setting up the water inlet pipe 16, part of the seawater can be injected into the main pump 9 when the external suction pump is working to dilute the silt or sediment entering the main pump 9, so as to prevent the silt or sediment from clogging the suction pump. A coarse filter screen can be provided at one end of the branching pipe 5 placed in the base side tube 3 to prevent stones with large diameters from entering the branching pipe 5 .

[0033] A rotating hole 18 is provided at the lower end of the first threaded rod 12. A rotating rod 19 is vertically provided on the upper side of the sealing plug 13. The upper part of the rotating rod 19 is rotatably arranged in the rotating hole 18. A limiting ring groove 20 is recessed on the outer wall around the upper part of the rotating rod 19. A second threaded hole 21 communicating with the hole wall of the rotating hole 18 is provided on the outer wall of the rotating rod 19. A second threaded rod 22 is threadedly connected in the second threaded hole 21 in a threaded matching manner. One end of the second threaded rod 22 placed in the rotating hole 18 is movably arranged in the limiting ring groove 20. With such a setting, when the first threaded rod 12 is screwed and moved downward, the bottom of the rotating hole 18 abuts against the rotating rod 19 to push the sealing plug 13 downward, thereby sealing the upper end of the support and extraction pipe 5. When the first threaded rod 12 moves upward, the limiting ring groove 20 and the second threaded rod 22 cooperate to drive the sealing plug 13 to move upward together. In order to improve the sealing performance of the sealing plug 13, a sealing rubber layer is provided on the lower side of the sealing plug 13, and the sealing performance is improved by means of the extrusion deformation of the sealing rubber layer to fit the sealing surface. A hexagonal screw head or a rotating handle adapted to the underwater robot is provided at the upper end of the first threaded rod 12, or a diver carries a tool to drive the first threaded rod 12 to rotate.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, rotating rings 23 are provided at both ends of the reset rod 7. The rotating ring 23 includes a fixed half-ring 24 and a movable half-ring 25. One end of the fixed half-ring 24 is connected to one end of the reset rod 7, and the other end is rotatably connected to one end of the movable half-ring 25 through a rotating shaft 26. The end of the movable half-ring 25 away from the rotating shaft 26 is detachably connected to the end of the reset rod 7 through a pin 27. A limiting plate 28 is provided at the upper end of the rotating column 6, and the diameter of the limiting plate 28 is larger than the inner diameter of the rotating ring 23. When the reset rod 7 is not in use, the reset rod 7 can be fixed by means of the rotating rings 23 at both ends of the reset rod 7. When it is necessary to use the reset rod 7 to reset the cylindrical foundation, a diver carries a tool or uses an underwater robot to pull out the pin 27 on the rotating ring 23 at one end of the reset rod 7 away from the upturned foundation side cylinder 3, so that the movable half-ring 25 at this position rotates around the rotating shaft 26. In this way, when the reset rod 7 is pushed to rotate around the rotating column 6 on the upturned foundation side cylinder 3 by an underwater robot or a diver carrying a tool, the rotating ring 23 with the pin 27 pulled out can move away from the rotating column 6 at this position, so that the reset rod 7 can be placed along the upturned direction of the cylindrical foundation, thus facilitating the subsequent hammering component to hammer the reset rod 7 to press down the upturned position.

[0036] Embodiment 3:

[0037] On the basis of the above-mentioned embodiment, the hammer assembly 8 includes a hammer pile 29, a hammer cavity 30 is vertically arranged in the hammer pile 29, a first traction machine 31 is installed on the top of the hammer cavity 30, the traction rope of the first traction machine 31 is connected to an electromagnet 32 ​​below the first traction machine 31, and a hammer block 33 is magnetically connected below the electromagnet 32. After the reset rod 7 is rotated, the hammer assembly 8 is installed to a position where the reset rod 7 is away from the foundation side tube 3 in the future through the guidance of the underwater robot and the cooperation of the lifting equipment, and the hammer block 33 is adsorbed by starting the first traction machine 31 and the electromagnet 32, and is lifted to a position close to the upper wall of the hammer cavity 30, and then the power supply of the electromagnet 32 ​​is turned off, so that the hammer block 33 falls freely onto the lower wall of the hammer cavity 30, so that the entire hammer pile 29 can be driven to hammer the reset rod 7 downward, thereby using the reset rod 7 to press down the position where the barrel foundation is tilted. The hammering chamber 30 is filled with air, so that the hammering block 33 can have enough impact force when it falls naturally, and a plurality of air holes penetrating the upper and lower sides are provided on the hammering block 33, so that air can smoothly pass through the hammering block 33, avoiding the damping effect on the hammering block 33. The top of the hammering pile 29 is connected with a cable for supplying power to the first tractor 31 and the electromagnet 32. The upper part of the hammering block 33 is made of steel that can be adsorbed by the electromagnet 32, and the inner or lower part is made of metal tungsten or tungsten alloy with higher density or other materials with higher density. In this way, the hammering block 33 can have enough mass while keeping the volume not too large, so that it has enough kinetic energy when it falls, thereby generating enough impact force.

[0038] Two clamping plates 34 are vertically spaced apart at the lower side of the hammer pile 29, and a plug rod 35 is vertically arranged between the two clamping plates 34. A plug hole 36 is arranged near the end of the reset rod 7. When the hammer assembly 8 is installed on the reset rod 7, the plug rod 35 is inserted into the plug hole 36, and the two clamping plates 34 are respectively clamped on both sides of the reset rod 7. Through the cooperation of the plug rod 35 and the plug hole 36, the hammer pile 29 can be stably installed at the appropriate position of the reset rod 7, and at the same time, it can not slide along the length direction of the reset rod 7 when the reset rod 7 is hammered, and the cooperation of the two clamping plates 34 can improve the stability of the installation of the hammer pile 29, and prevent the hammer pile 29 from tipping over during use.

[0039] Embodiment 4:

[0040] On the basis of the foregoing embodiments, a second tractor 37 is installed on the lower side of the transition section 4. A hook 38 is installed on the towing rope of the second tractor 37. A hanging ring 39 is arranged on the upper side of the reset rod 7 near the end. When the hammering assembly 8 hammers the reset rod 7, the truss structure 1, the reset rod 7 and the towing rope of the second tractor 37 are formed into a triangle by means of the second tractor 37, the hook 38 and the hanging ring 39. In this way, when the reset rod 7 is hammered, the upper end of the truss structure 1 will also be driven to reset, which can make the whole reset process more stable. It can also prevent the reset rod 7 from relying solely on the rotating column 6 to drive the cylindrical foundation to reset during the hammering process, which is likely to cause deformation of the reset rod 7.

[0041] A locking tube 40 is vertically arranged below the second tractor 37. The outer wall of the locking tube 40 is connected to the truss structure 1 through a fixed bracket 41. Arc-shaped clamping pieces 42 are movably arranged on opposite sides of the inner wall of the locking tube 40. Third threaded holes 43 penetrating inside and outside are arranged on the inner wall of the locking tube 40 at positions corresponding to the two arc-shaped clamping pieces 42. A third threaded rod 44 is in threaded engagement connection with the third threaded hole 43; an anti-falling ring 45 is arranged on the inner wall of the locking tube 40 below the arc-shaped clamping piece 42. After connecting the hook 38 and the hanging ring 39, after tightening the towing rope by the second tractor 37, the two arc-shaped clamping pieces 42 are pushed by rotating the third threaded rod 44 to fix the towing rope, so as to prevent the towing rope from moving during the whole reset process and the impact force of the towing rope from damaging the second tractor 37. By arranging the anti-falling ring 45, the two arc-shaped clamping pieces 42 can move freely in the locking tube 40.

[0042] An inner sleeve 46 for separating the inner part of the foundation middle cylinder 2 into an inner layer and an outer layer is arranged in the foundation middle cylinder 2. One ends of the plurality of support and extraction pipes 5 away from each other respectively extend into a plurality of foundation side cylinders 3 and different orientations of the outer layer. By arranging the inner sleeve 46, the foundation middle cylinder 2 can be separated into different regions to form the effect of a plurality of suction cylinders to improve the anti-pulling ability of the whole cylindrical foundation.

[0043] Although the present invention has been described herein with reference to multiple explanatory embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and implementation manners, which will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of the disclosure, the drawings and the claims of this application, various variations and improvements can be made to the components and / or the layout of the subject combination layout. In addition to the variations and improvements made to the components and / or the layout, other uses will also be obvious to those skilled in the art.

Claims

1. An offshore wind power composite barrel foundation with a capsizing and resetting function, comprising a vertically arranged truss structure (1), wherein a foundation middle barrel (2) and a plurality of foundation side barrels (3) are arranged at the lower end of the truss structure (1), and the plurality of foundation side barrels (3) are evenly distributed along the circumferential direction of the foundation middle barrel (2), and a transition section (4) for connecting a wind turbine is arranged at the upper end of the truss structure (1), characterized in that: The inner top wall of the base middle tube (2) is provided with a plurality of branching tubes (5), one end of the plurality of branching tubes (5) gathers toward the center of the base middle tube (2), and the ends close to each other pass upward through the tube wall of the base middle tube (2) and are placed on the upper side of the base middle tube (2), and the ends of the plurality of branching tubes (5) that are away from each other extend into the plurality of base side tubes (3); the tops of the plurality of base side tubes (3) are vertically provided with rotating columns (6), and a reset rod (7) is provided between two adjacent rotating columns (6), and the two ends of the reset rod (7) are respectively detachably connected to the two adjacent rotating columns (6); and a hammer assembly (8) is detachably mounted on the upper side of the reset rod (7).

2. The offshore wind power composite barrel foundation with overturning restoration function according to claim 1 is characterized in that: A main pumping tube (9) is vertically installed at the center of the upper side of the base middle tube (2), and the upper end of the main pumping tube (9) is sealed by a sealing plate (10). The ends of the plurality of branch pumping tubes (5) close to each other are all opened and vertically arranged upward in the main pumping tube (9), and the sealing plate (10) is provided with a plurality of first threaded holes (11) corresponding to the upper ends of the plurality of branch pumping tubes (5) one by one. The plurality of first threaded holes (11) are threadedly matched and connected with a first threaded rod (12), and the lower end of the first threaded rod (12) is provided with a thread for sealing the branch pumping tubes (5). ) is provided with a sealing plug (13), the upper end of the first threaded rod (12) is placed on the upper end of the sealing plate (10); a connecting pipe (14) communicating with the interior of the main pumping pipe (9) is provided on the side wall near the upper end of the main pumping pipe (9), the connecting pipe (14) being used to connect to an external suction pump; a first valve (15) for controlling the on-off of the connecting pipe (14) is provided on the connecting pipe (14); a water inlet pipe (16) communicating with the interior of the main pumping pipe (9) is provided near the bottom of the main pumping pipe (9), the water inlet pipe (16) being provided with a second valve (17) for controlling the on-off of the water inlet pipe (16).

3. The offshore wind power composite barrel foundation with overturning restoration function according to claim 2 is characterized in that: A rotation hole (18) is provided at the lower end of the first threaded rod (12), a rotation rod (19) is vertically provided on the upper side of the sealing plug (13), the upper part of the rotation rod (19) is rotatably arranged in the rotation hole (18), a limit ring groove (20) is provided in a recessed outer wall surrounding the upper part of the rotation rod (19), a second threaded hole (21) connected to the hole wall of the rotation hole (18) is provided on the outer wall of the rotation rod (19), the second threaded hole (21) is internally threadedly connected with a second threaded rod (22), and one end of the second threaded rod (22) placed in the rotation hole (18) is movably arranged in the limit ring groove (20).

4. The offshore wind power composite barrel foundation with overturning restoration function according to claim 1 is characterized in that: A rotating ring (23) is provided at both ends of the reset rod (7), and the rotating ring (23) comprises a fixed half ring (24) and a movable half ring (25). One end of the fixed half ring (24) is connected to one end of the reset rod (7), and the other end is rotatably connected to one end of the movable half ring (25) via a rotating shaft (26). The end of the movable half ring (25) away from the rotating shaft (26) is detachably connected to the end of the reset rod (7) via a latch (27). A limiting plate (28) is provided at the upper end of the rotating column (6), and the diameter of the limiting plate (28) is larger than the inner diameter of the rotating ring (23).

5. The offshore wind power composite barrel foundation with overturning restoration function according to claim 1 is characterized in that: The hammer assembly (8) comprises a hammer pile (29), a hammer chamber (30) is vertically arranged in the hammer pile (29), a first traction machine (31) is installed on the top of the hammer chamber (30), a traction rope of the first traction machine (31) is connected to an electromagnet (32) below the first traction machine (31), and a hammer block (33) is magnetically connected to the bottom of the electromagnet (32).

6. The offshore wind power composite barrel foundation with overturning restoration function according to claim 5 is characterized in that: Two clamping plates (34) are vertically spaced apart on the lower side of the hammer pile (29), and an insertion rod (35) is vertically arranged between the two clamping plates (34). A plug hole (36) is arranged near the end of the reset rod (7). When the hammer assembly (8) is mounted on the reset rod (7), the plug rod (35) is inserted into the plug hole (36), and the two clamping plates (34) are respectively clamped on both sides of the reset rod (7).

7. The offshore wind power composite barrel foundation with overturning restoration function according to claim 1 is characterized in that: A second traction machine (37) is installed on the lower side of the transition section (4), a hook (38) is installed on the traction rope of the second traction machine (37), and a hanging ring (39) is provided on the upper side of the reset rod (7) at a position close to the end.

8. The offshore wind power composite barrel foundation with overturning restoration function according to claim 7 is characterized in that: A locking tube (40) is vertically arranged below the second traction machine (37); the outer wall of the locking tube (40) is connected to the truss structure (1) via a fixed bracket (41); arc-shaped clamping pieces (42) are movably arranged on opposite sides of the inner wall of the locking tube (40); the inner wall of the locking tube (40) is provided with third threaded holes (43) that pass through the inside and outside at positions corresponding to the two arc-shaped clamping pieces (42); the inner thread of the third threaded hole (43) is matched and connected with a third threaded rod (44); the inner wall of the locking tube (40) is provided with an anti-drop ring (45) at the lower side of the arc-shaped clamping piece (42).

9. The offshore wind power composite barrel foundation with overturning restoration function according to claim 1, characterized in that: The base middle tube (2) is provided with an inner sleeve (46) for dividing the inside of the base middle tube (2) into an inner ring layer and an outer ring layer, and the ends of the plurality of branch pipes (5) that are away from each other extend into the plurality of base side tubes (3) and different positions of the outer ring layer.

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