An offshore wind power composite cylindrical foundation with a tipping and resetting function

Abstract

The present invention relates to the field of offshore wind power foundations, and particularly relates to an offshore wind power composite barrel foundation with an overturning reset function, which includes a truss structure arranged vertically. At the lower end of the truss structure, there is a central foundation barrel and multiple peripheral foundation barrels, and the multiple peripheral foundation barrels are evenly distributed along the circumferential direction of the central foundation barrel. At the upper end of the truss structure, there is a transition section for connecting a wind turbine generator. On the inner top wall of the central foundation barrel, there are multiple support and extraction pipes, and one ends of the multiple support and extraction pipes converge towards the center of the central foundation barrel and are located above the central foundation barrel. The mutually remote ends of the multiple support and extraction pipes respectively extend into the multiple peripheral foundation barrels; Rotating columns are vertically arranged at the tops of the multiple peripheral foundation barrels, and a reset rod is arranged between adjacent two rotating columns; A hammering assembly is detachably installed on the upper side of the reset rod. It solves the problem that in the prior art, the composite barrel foundation does not have a structure for self-rescue or cooperating with self-rescue after tilting.

Description

Technical Field

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

[0002] Offshore wind power is a technology that uses offshore wind energy to drive the rotation of wind turbine blades and then converts 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, great power generation potential, low noise pollution, and close proximity to the electricity load. It neither affects the ecological environment nor causes 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 vary, 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 and reach its 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 and prevent the wind power foundation from continuing to incline 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 the invention includes a first steel hoop connector, a first composite anchor plate and a plurality of steel pressing bars; a plurality of square holes are provided on both the first composite anchor plate and the first steel hoop connector, and the plurality of steel pressing bars can be inserted into or pulled out of the square holes; an elastic member is arranged inside the first composite anchor plate. When the offshore wind power cylindrical foundation inclines, the steel pressing bars are pulled out, and when the first composite anchor plate expands under the action of the elastic member, the friction area between it and the seabed foundation increases, thereby providing a pulling force for the offshore wind power cylindrical foundation. The invention realizes the rapid improvement of the anti-overturning ability of the inclined offshore wind power cylindrical foundation.

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

[0006] The purpose of the present 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 inclination.

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

[0008] An offshore wind power composite cylindrical foundation with an overturning and reset 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 generator set. 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 remote 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, rotating columns are arranged vertically. A reset rod is arranged between two adjacent rotating columns, and the two ends of the reset rod are detachably connected to the two adjacent rotating columns respectively; a hammering assembly 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. The mutually approaching ends of the plurality of support and extraction pipes 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, a first threaded rod is 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; a first valve for controlling its on-off is arranged on the connecting pipe; 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. A second valve for controlling its on-off is arranged on the water inlet pipe.

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

[0011] A further technical solution is that rotating rings are arranged at both ends of the reset rod. Each rotating 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 rotating shaft. The end of the movable half-ring away from the rotating shaft is detachably connected to the end of the reset rod through a pin; a limiting plate is arranged at the upper end of the rotating column, and the diameter of the limiting plate is larger than the inner diameter of the rotating 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 tractor is installed at the top of the hammering cavity. A traction rope of the first tractor is connected with an electromagnet below the first tractor. 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 tractor is installed on the lower side of the transition section. A hook is installed on the traction rope of the second tractor. 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 tube is vertically arranged below the second tractor. The outer wall of the locking tube is connected with a truss structure through a fixed bracket. Arc-shaped clamping pieces are movably arranged on both opposite sides of the inner wall of the locking tube. Third threaded holes penetrating inside and outside are arranged on the inner wall of the locking tube at positions corresponding to the two arc-shaped clamping pieces. A third threaded rod is in threaded matching connection in the third threaded hole; an anti-falling ring is arranged on the inner wall of the locking tube below the arc-shaped clamping piece.

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

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the cylindrical foundation tilts to a certain angle after long-term use, rotate the corresponding reset rod to the direction where the cylindrical foundation tilts upwards, and then install the hammering component at one end of the reset rod far away from the cylindrical foundation. The hammering component is used to hammer the reset rod to play a role in pressing down the tilted position of the cylindrical foundation. At the same time, the branch pumping tube located at the tilted position is used to pump seawater, silt, sediment, etc. inside the cylindrical foundation, so that there is a 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 an offshore wind power composite cylindrical foundation with an overturning reset 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 an offshore wind power composite cylindrical foundation with an overturning reset 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 It is Figure 4 A partially enlarged schematic view of 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 It is Figure 4 A partially enlarged schematic view of 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] Icons: 1 - Truss structure, 2 - Central 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 - Limit 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 - Pin, 28 - Limit plate, 29 - Hammering pile, 30 - Hammering cavity, 31 - First tractor, 32 - Electromagnet, 33 - Hammering block, 34 - Clamping plate, 35 - Insertion rod, 36 - Insertion 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 and more understandable, 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 and resetting 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 unit. 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 cylinder wall of the central foundation cylinder 2 and are located on the upper side of the central foundation cylinder 2. The mutually separated 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; Rotating columns 6 are arranged vertically at the tops of the plurality of peripheral foundation cylinders 3. Along the radial direction at the position corresponding to the rotating columns 6 on the inner top of the peripheral foundation cylinders 3, strengthening ribs are provided 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. By hammering the reset rod 7 with the hammering assembly 8, it plays a role in pressing down the tilted position of the cylindrical foundation. At the same time, by means of the support and extraction pipes 5 located at the tilted position, seawater or silt or sediment inside the cylindrical foundation is extracted, 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 extraction pipe 9 is vertically installed at the upper side center of the basic middle cylinder 2. The upper end of the main extraction pipe 9 is sealed by a sealing plate 10. One ends of multiple branch extraction pipes 5 that approach each other are all vertically arranged with openings facing upward inside the main extraction pipe 9. Multiple first threaded holes 11 respectively corresponding to the upper ends of the multiple branch extraction pipes 5 are arranged on the sealing plate 10. First threaded rods 12 are threadedly and matingly connected in the multiple first threaded holes 11. A sealing plug 13 for sealing the branch extraction pipe 5 is arranged at the lower end of the first threaded rod 12. The upper end of the first threaded rod 12 is placed above the sealing plate 10. A connecting pipe 14 communicating with the inside of the main extraction pipe 9 is arranged on the side wall of the main extraction pipe 9 near the upper end. The connecting pipe 14 is used to connect an external suction pump. A first valve 15 for controlling its on-off is arranged on the connecting pipe 14. A water inlet pipe 16 communicating with the inside of the main extraction pipe 9 is arranged at a position of the main extraction pipe 9 near the bottom. A second valve 17 for controlling its on-off is arranged on the water inlet pipe 16. After the cylindrical foundation is installed, the branch extraction pipe 5 is sealed by the sealing plug 13, and the main extraction pipe 9 is sealed by the first valve 15 and the second valve 17, so that seawater can be prevented from entering the basic middle cylinder 2 and the basic side cylinder 3 from the branch extraction pipe 5. When the cylindrical foundation tilts, an external suction pump is connected to the connecting pipe 14. At the same time, an underwater robot or a diver carrying tools is used to screw the first threaded rod 12 for plugging the corresponding tilted position of the branch extraction pipe 5, so that the sealing plug 13 moves upward from the upper end of the branch extraction pipe 5. In this way, when the external suction pump is started, part of the silt, seawater, sediment, etc. in the tilted basic side cylinder 3 can be extracted through the branch extraction pipe 5, so that a space for downward movement is provided at this position. By arranging the water inlet pipe 16, part of the seawater can be injected into the main extraction pipe 9 during the operation of the external suction pump to dilute the silt or sediment entering the main extraction pipe 9, and the suction pump can be prevented from being blocked by the silt or sediment. A coarse filter screen can be arranged at one end of the branch extraction pipe 5 placed inside the basic side cylinder 3 to prevent large-diameter stones from entering the branch extraction 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 in threaded engagement in the second threaded hole 21. 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. 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 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 be moved 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] Based on the above embodiment, the hammer assembly 8 includes a hammer pile 29, a hammer chamber 30 vertically arranged in the hammer pile 29, and a first tractor 31 installed on the top of the hammer chamber 30. The traction rope of the first tractor 31 is connected to an electromagnet 32 below the first tractor 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 away from the reset rod 7 by the guidance of an underwater robot and in conjunction with a lifting device. The hammer block 33 is attracted by the first tractor 31 and the electromagnet 32 and hoisted to a position close to the upper wall of the hammer chamber 30. The electromagnet 32 is then de-energized, causing the hammer block 33 to fall freely onto the lower wall of the hammer chamber 30, thereby driving the entire hammer pile 29 to hammer the reset rod 7 downward, thereby using the reset rod 7 to press down the tilted position of the barrel foundation. The hammering chamber 30 is filled with air, so that the hammering block 33 can have enough impact force when it falls naturally. In addition, the hammering block 33 is provided with a plurality of air holes that penetrate the upper and lower sides, so that air can pass through the hammering block 33 smoothly, avoiding causing a damping effect on the hammering block 33. The top of the hammering pile 29 is connected to a cable for powering 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 its 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 on the lower side of the hammer pile 29, and a rod 35 is vertically arranged between the two clamping plates 34. A socket 36 is provided near the end of the reset rod 7. When the hammer assembly 8 is installed on the reset rod 7, the rod 35 is inserted into the socket 36, and the two clamping plates 34 are respectively clamped on either side of the reset rod 7. The cooperation between the rod 35 and the socket 36 can ensure that the hammer pile 29 is stably installed in the appropriate position of the reset rod 7. At the same time, it can prevent the reset rod 7 from sliding along the length direction of the reset rod 7 when the reset rod 7 is hammered. In combination with the two clamping plates 34, the stability of the installation of the hammer pile 29 is improved, preventing the hammer pile 29 from tipping over during use.

[0039] Example 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 component 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 is also driven to reset, which can make the whole reset process more stable. It can also avoid that when the reset rod 7 is hammered, relying solely on the rotating column 6 to drive the cylindrical foundation to reset, which easily causes the reset rod 7 to deform.

[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 both 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 matching 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 avoid the movement of the towing rope during the whole reset process and the impact force of the towing rope on the second tractor 37 causing damage. By arranging the anti-falling ring 45, the two arc-shaped clamping pieces 42 can freely move 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. The mutually remote ends of the plurality of branch extraction pipes 5 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, so as to improve the anti-pulling capacity of the whole cylindrical foundation.

[0043] Although the present invention has been described herein with reference to a number of illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and embodiments that will fall within the scope of the principles of this application disclosure and spirit. More specifically, within the scope of this application disclosure, the drawings and the claims, 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 cylindrical foundation with a tipping and resetting function, comprising a truss structure (1) arranged vertically. A foundation middle cylinder (2) and a plurality of foundation edge cylinders (3) are arranged at the lower end of the truss structure (1), and the plurality of foundation edge cylinders (3) are evenly distributed along the circumferential direction of the foundation middle cylinder (2). A transition section (4) for connecting a wind turbine unit is arranged at the upper end of the truss structure (1), characterized in that, A plurality of support extraction pipes (5) are arranged on the inner top wall of the base middle cylinder (2). One ends of the plurality of support extraction pipes (5) converge towards the center of the base middle cylinder (2), and the mutually approaching ends all pass upward through the cylinder wall of the base middle cylinder (2) and are placed on the upper side of the base middle cylinder (2). The mutually remote ends of the plurality of support extraction pipes (5) respectively extend into a plurality of the base side cylinders (3); Rotating columns (6) are vertically arranged on the tops of the plurality of base side cylinders (3), and a reset rod (7) is arranged between two adjacent rotating columns (6). Two ends of the reset rod (7) are detachably connected to two adjacent rotating columns (6) respectively; A hammering assembly (8) is detachably installed on the upper side of the reset rod (7); A main extraction pipe (9) is vertically installed at the center of the upper side of the base middle cylinder (2). The upper end of the main extraction pipe (9) is sealed by a sealing plate (10). One ends of the plurality of support extraction pipes (5) that approach each other are all arranged vertically with their openings facing upward in the main extraction pipe (9). A plurality of first threaded holes (11) respectively corresponding to the upper ends of the plurality of support extraction pipes (5) are arranged on the sealing plate (10). First threaded rods (12) are threadedly and matingly connected in the plurality of first threaded holes (11). A sealing plug (13) for sealing the support extraction pipe (5) is arranged at the lower end of the first threaded rod (12). 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 inside of the main extraction pipe (9) is arranged on the side wall of the main extraction pipe (9) near the upper end. The connecting pipe (14) is used to connect an external suction pump; A first valve (15) for controlling its on-off is arranged on the connecting pipe (14); A water inlet pipe (16) communicating with the inside of the main extraction pipe (9) is arranged at a position of the main extraction pipe (9) near the bottom. A second valve (17) for controlling its on-off is arranged on the water inlet pipe (16); The hammering assembly (8) includes a hammering pile (29). A hammering cavity (30) is vertically arranged in the hammering pile (29). A first traction machine (31) is installed at the top of the hammering cavity (30). A traction rope of the first traction machine (31) is connected with an electromagnet (32) below the first traction machine (31). A hammering block (33) is magnetically connected below the electromagnet (32).

2. The offshore wind power composite barrel foundation with a tipping and reset function according to claim 1, characterized in that: A rotating hole (18) is arranged at the lower end of the first threaded rod (12). A rotating rod (19) is vertically arranged 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 surrounding the upper part of the rotating rod (19). A second threaded hole (21) communicating with the hole wall of the rotating hole (18) is arranged on the outer wall of the rotating rod (19). A second threaded rod (22) is threadedly and matingly connected in the second threaded hole (21). One end of the second threaded rod (22) placed in the rotating hole (18) is movably arranged in the limiting ring groove (20).

3. The offshore wind power composite cylindrical foundation with a tipping and resetting function according to claim 1, characterized in that: Both ends of the reset rod (7) are provided with rotating rings (23). 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) far from the rotating shaft (26) is detachably connected to the end of the reset rod (7) through a bolt (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).

4. A composite cylindrical foundation for offshore wind power with a tipping and reset function according to claim 1, characterized in that: Two clamping plates (34) are vertically arranged at intervals on the lower side of the impact pile (29), and a plug rod (35) is vertically arranged between the two clamping plates (34). A jack (36) is arranged at a position close to the end of the reset rod (7). When the impact component (8) is installed on the reset rod (7), the plug rod (35) is inserted into the jack (36), and the two clamping plates (34) are respectively clamped on both sides of the reset rod (7).

5. A composite cylindrical foundation for offshore wind power with an overturning and resetting function according to claim 1, characterized in that: 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 at a position close to the end on the upper side of the reset rod (7).

6. The offshore wind power composite barrel foundation with a tipping and reset function according to claim 5, characterized in that: A locking pipe (40) is vertically arranged below the second tractor (37). The outer wall of the locking pipe (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 pipe (40). Third threaded holes (43) penetrating inside and outside are arranged on the inner wall of the locking pipe (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 pipe (40) below the arc-shaped clamping piece (42).

7. A composite barrel foundation for offshore wind power with a tipping and reset function according to claim 1, characterized in that: An inner sleeve (46) for dividing the inside of the foundation middle cylinder (2) into an inner layer and an outer layer is arranged in the foundation middle cylinder (2). The mutually separated ends of the plurality of support and extraction pipes (5) respectively extend into the plurality of foundation side cylinders (3) and different orientations of the outer layer.

Images