A smart dismantling and resource recycling system for offshore wind turbine foundations

Abstract

This utility model provides an intelligent dismantling and resource recycling system for offshore wind turbine foundations, which enables low-cost and high-efficiency recycling of wind turbine foundation piles. It includes: an upper internal clamping device; a lower internal clamping device; an underwater automatic cutting device; and a steel wire rope. The upper and lower internal clamping devices are connected by a steel wire rope, the length of which is determined by the height of the foundation pile above the water surface, the water depth, and the depth below the mud surface. The upper flange of the underwater automatic cutting device is connected to the bottom flange of the lower internal clamping device. Inside the underwater automatic cutting device, an underwater module electric steel drives the inner and outer rotating gear rings to rotate. The upper part of the cutting head is fixed to one position of the inner and outer rotating gear rings, and the lower output end of the cutting head faces outwards.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine pile recycling, specifically to an intelligent dismantling and resource recycling system for offshore wind turbine pile foundations. Background Technology

[0002] As offshore wind turbines enter their mass decommissioning phase, the environmentally friendly and economical dismantling of their foundation structures has become a new challenge for the industry, with the recovery of steel pipe piles buried deep in the seabed being a core hurdle. Current technological solutions heavily rely on large fleets of vessels, including large floating cranes, ultra-large vibratory hydraulic hammers, underwater robots (ROVs), and dredging equipment, for underwater cutting and removal. This complex operational mode significantly increases construction costs and timelines. To reduce the recovery costs of foundation piles, there is an urgent need to develop a reliable resource recovery system. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides an intelligent dismantling and resource recycling system for offshore wind turbine foundations, which enables low recycling costs and high recycling efficiency for wind turbine foundation piles.

[0004] A smart dismantling and resource recycling system for offshore wind turbine foundations, characterized in that it comprises: Upper internal expansion clamping device; Lower internal expansion clamping device; Underwater automatic cutting device; And steel wire rope; The upper and lower internal expansion clamping devices are connected by a steel wire rope. The length of the steel wire rope is determined according to the height of the foundation pile above the water surface, the water depth, and the depth below the mud surface. The upper flange of the underwater automatic cutting device is connected to the bottom flange of the lower internal expansion clamping device. The underwater automatic cutting device is driven by an underwater module electric steel to rotate the inner and outer rotary gear rings. The upper part of the cutting head is fixed to one of the inner and outer rotary gear rings, and the lower output end of the cutting head is arranged facing outward.

[0005] Its further features are: The upper internal expansion clamping device includes a first upper lifting lug, a first lower lifting lug, an upper support structure, a first upper reinforcing plate, a first lower reinforcing plate, a first annular guard plate, a number of first outer protective structures, and a number of first movable hydraulic clamping structures. The outer periphery of the first annular guard plate is provided with a number of outer protective structures and a corresponding number of first movable hydraulic clamping structures. The lower internal expansion clamping device includes a second upper lifting lug, a second upper reinforcing plate, a second lower reinforcing plate, a second annular guard plate, several second outer protective structures, several second movable hydraulic clamping structures, a bottom sealing plate, and a lower flange. Several second outer protective structures and a corresponding number of second movable hydraulic clamping structures are respectively provided on the outer periphery of the second annular guard plate. The first annular guard plate and the second annular guard plate are the same annular guard plate; the first outer protective structure and the second outer protective structure are the same outer protective structure; and the first movable hydraulic clamping structure and the second movable hydraulic clamping structure are the same movable chamber hydraulic clamping mechanism. The outer protective structure consists of several steel plates welded onto a ring-shaped protective plate. An outer protective mechanism is provided between each group of adjacent movable chamber hydraulic clamping mechanisms. During the lowering process, the outer protective structure ensures that the movable hydraulic clamping structure does not deform due to contact with the inner wall of the foundation pile. Each set of movable hydraulic clamping structures is equipped with a clamping support head, an electromagnetic adsorption plate, a cylinder connecting plate, a cylinder, and a cylinder base. When the cylinder is working, the cylinder drives the clamping support head to support the inner wall of the foundation pile. Then, the solenoid valve is energized and the electromagnetic adsorption plate is firmly adsorbed onto the inner wall of the foundation pile. The bottom sealing plate of the lower internal expansion clamping device has a channel hole, which can reduce the structural weight and also serve as a hose channel for related devices. The underwater automatic cutting device includes an upper flange, an outer annular protective plate, a middle annular reinforcing plate, inner and outer rotary gear rings, an underwater module electrical steel, and a cutting head. The upper flange is connected to the bottom flange of the lower inner expansion clamping device. The base of the underwater module electrical steel is connected to the middle annular reinforcing plate. The guide rings of the inner and outer rotary gear rings are embedded in the annular guide grooves of the middle annular reinforcing plate. The top of the cutting head is connected to the inner and outer rotary gear rings. The lower output end of the cutting head protrudes from the bottom of the outer annular protective plate and is arranged towards the outside. The underwater automatic cutting device emits flames from the lower output end of the cutting head, and the underwater module electric steel operates to drive the drive wheel to rotate. The drive wheel meshes with the inner gear ring of the inner and outer rotary gear rings, and the outer gear rings of the inner and outer rotary gear rings mesh with the fixed outer gear ring. This causes the underwater module electric steel to work, driving the cutting head to emit flames and rotate one revolution to complete the cutting of the single pile foundation pile. It can be equipped with cameras and lighting devices. Cameras and lighting devices are placed at key locations of the equipment. The system is used to observe the specific working position of the equipment, the internal condition of the underwater steel pile, and the precise location of the cutting seam in real time.

[0006] With the adoption of this utility model, the entire system is placed inside the foundation pile. The upper internal tension clamping device is located at the top of the foundation pile to tighten the inner wall of the foundation pile, and the lower internal tension clamping device is located at the bottom of the foundation pile to tighten the inner wall of the foundation pile. The upper and lower internal tension clamping devices are connected by a steel wire rope. The length of the steel wire rope is determined according to the height of the foundation pile above the water surface, the water depth, and the depth below the mud surface. After the tensioning and positioning are completed, the lower output end of the cutting head of the underwater automatic cutting device performs a ring cut to complete the cutting operation on the bottom of the foundation pile. This makes the recycling cost of wind power foundation piles low and the recycling efficiency high. Attached Figure Description

[0007] Figure 1 This is the front view of the present invention; Figure 2 This is a top view of the present invention. Figure 3 This is a schematic diagram showing the arrangement of the outer protective structure, the annular guard plate, and the hydraulic clamping mechanism of the movable chamber of this utility model; Figure 4 for Figure 1 A schematic diagram of the AA section; The names corresponding to the serial numbers in the diagram are as follows: Upper internal expansion clamping device 10, first upper lifting lug 11, first lower lifting lug 12, upper support structure 13, first upper reinforcing plate 14, first lower reinforcing plate 15, first annular guard plate 16, first outer protective structure 17, first movable hydraulic clamping structure 18, lower internal expansion clamping device 20, bottom flange 21, second upper lifting lug 22, second upper reinforcing plate 23, second lower reinforcing plate 24, second annular guard plate 25, second outer protective structure 26, second movable hydraulic clamping structure 27, bottom sealing plate 28, underwater automatic cutting device 30, upper flange 31, underwater module electric steel 32, inner and outer rotary gear rings 33, cutting head 34, outer annular guard plate 35, middle annular reinforcing plate 36, drive wheel 37, fixed outer gear ring 38, wire rope 40, foundation pile 50. Detailed Implementation

[0008] A smart dismantling and resource recycling system for offshore wind turbine foundations, see Figures 1-4 It includes an upper internal expansion clamping device 10, a lower internal expansion clamping device 20, an underwater automatic cutting device 30, and a steel wire rope 40. The upper internal expansion clamping device 10 and the lower internal expansion clamping device 20 are connected by a steel wire rope 40. The length of the steel wire rope 40 is determined according to the height of the foundation pile 50 at the water surface, the water depth, and the depth below the mud surface. The upper flange 31 of the underwater automatic cutting device 30 is connected to the bottom flange 21 of the lower internal expansion clamping device 20. The underwater automatic cutting device 30 drives the inner and outer rotary gear rings 33 to rotate through the underwater module electric steel 32. The upper part of the cutting head 34 is fixed to one of the positions of the inner and outer rotary gear rings 33, and the lower output end of the cutting head 34 is arranged facing outward.

[0009] In a specific embodiment, the upper internal expansion clamping device 10 includes a first upper lifting lug 11, a first lower lifting lug 12, an upper support structure 13, a first upper reinforcing plate 14, a first lower reinforcing plate 15, a first annular guard plate 16, eight sets of first outer protective structures 17, and eight sets of first movable hydraulic clamping structures 18. The outer periphery of the first annular guard plate 16 is provided with eight outer protective structures 17 and eight first movable hydraulic clamping structures 18 respectively. The lower internal expansion clamping device 20 includes a second upper lifting lug 22, a second upper reinforcing plate 23, a second lower reinforcing plate 24, a second annular guard plate 25, 8 sets of second outer protective structures 26, 8 sets of second movable hydraulic clamping structures 27, a bottom sealing plate 28, and a lower flange 21. The second annular guard plate 25 is provided with 8 second outer protective structures 26 and 8 sets of second movable hydraulic clamping structures 27 around its perimeter. The first annular guard plate 16 and the second annular guard plate 25 are the same annular guard plates, the first outer protective structure 17 and the second outer protective structure 26 are the same outer protective structure, and the first movable hydraulic clamping structure 18 and the second movable hydraulic clamping structure 27 are the same movable chamber hydraulic clamping mechanism. The outer protective structure consists of several steel plates welded onto the ring-shaped protective plate. An outer protective mechanism is set between each group of hydraulic clamping mechanisms of adjacent movable chambers. During the lowering process, the outer protective structure ensures that the movable hydraulic clamping structure does not deform due to contact with the inner wall of the foundation pile. Each set of movable hydraulic clamping structures contains a clamping support head, an electromagnetic adsorption plate, a cylinder connecting plate, a cylinder, and a cylinder base. When the cylinder is working, it drives the clamping support head to support the inner wall of the foundation pile. Then, the solenoid valve is energized and the electromagnetic adsorption plate is firmly adsorbed onto the inner wall of the foundation pile (this is a mature movable chamber hydraulic clamping structure, only a simplified illustration in the figure). The bottom sealing plate 28 of the lower internal expansion clamping device 20 has a channel hole, which can reduce the structural weight and also serve as a hose channel for related devices; The underwater automatic cutting device 30 includes an upper flange 31, an outer annular guard plate 35, an inner annular reinforcing plate 36, inner and outer rotary gear rings 33, an underwater module electric steel 32, and a cutting head 34. The upper flange 31 is connected to the bottom flange 31 of the lower inner expansion clamping device 20. The base of the underwater module electric steel 32 is connected to the inner annular reinforcing plate 36. The guide rings of the inner and outer rotary gear rings 33 are embedded in the annular guide grooves of the inner and outer annular reinforcing plate 36. The top of the cutting head 34 is connected to the inner and outer rotary gear rings 33. The lower output end of the cutting head 34 protrudes from the bottom of the outer annular guard plate 35 and is arranged towards the outside. The underwater automatic cutting device 30 emits flames from the lower output end of the cutting head 34 to cut. The underwater module electric steel 32 is activated, driving the drive wheel 37 to rotate. The drive wheel 37 meshes with the inner gear ring of the inner and outer rotary gear rings 33. The outer gear ring of the inner and outer rotary gear rings 33 meshes with and connects to the fixed outer gear ring 38, which causes the underwater module electric steel 32 to work, driving the cutting head 34 to emit flames and rotate one revolution, completing the cutting of the single pile foundation pile.

[0010] In practice, cameras and lighting devices can also be deployed at key locations on the equipment. The system is used to monitor the specific working position of the equipment, the internal condition of the underwater steel pile, and the precise location of the cutting seam in real time.

[0011] Its workflow is as follows: 1. According to the owner's work requirements, first use dredging equipment to clean the silt from the inner wall of the foundation piles to the required level, then remove the dredging equipment; 2. Determine the length of the intermediate connecting steel wire rope based on the current elevation of the silt removal inside the foundation piles and the lifting capacity of the ship crane. 3. Assemble the intelligent dismantling and resource recycling system for offshore wind power pile foundations according to the operation requirements, and connect the upper and lower internal expansion clamping devices with the determined steel wire rope through the lifting lug mechanism; 4. The crane lifts the intelligent dismantling and resource recycling system for offshore wind power pile foundations and slowly inserts it into the foundation piles; 5. Once the upper support structure on the internal expansion clamping device is placed on the upper opening of the foundation pile, the crane stops lowering and secures it. 6. The eight movable hydraulic clamping structures of the upper and lower internal expansion clamping devices are simultaneously activated and extended to the inner wall of the foundation pile to reach the specified pressure value, and the center of gravity is automatically adjusted to ensure that the center of the two sets of internal expansion clamping devices is consistent with the foundation pile. 7. When the solenoid valves of the movable hydraulic clamping structures of the upper and lower internal expansion clamping devices are energized, the electromagnetic adsorption plates are firmly adsorbed onto the inner wall of the foundation pile. 8. The cutting head of the underwater automatic cutting device is aligned with the cylinder wall, and cutting begins; 9. The underwater module electric steel of the underwater automatic cutting device begins to rotate, driving the inner and outer rotary gear rings to rotate one revolution, completing the cutting; 10. Observe through the camera to see if all the foundation piles have been separated. If there are still connected parts, the underwater automatic cutting device will drive the cutting head to rotate one revolution to ensure that all the foundation piles are separated. 11. The cut cylindrical sections are lifted and transported to the ship's cylindrical section storage area; 12. Repeat the above steps until the specified elevation is reached. Then, move the ship to another location to begin cutting the next steel pile.

[0012] The entire system is placed inside the foundation pile. The upper internal tension clamping device is located at the top of the foundation pile to tighten the inner wall of the foundation pile, and the lower internal tension clamping device is located at the bottom of the foundation pile to tighten the inner wall of the foundation pile. The upper and lower internal tension clamping devices are connected by a steel wire rope. The length of the steel wire rope is determined according to the height of the foundation pile above the water surface, the water depth, and the depth below the mud surface. After the tensioning and positioning are completed, the lower output end of the cutting head of the underwater automatic cutting device performs a ring cut to complete the cutting operation on the bottom of the foundation pile. This makes the recycling cost of wind power foundation piles low and the recycling efficiency high.

[0013] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0014] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart dismantling and resource recycling system for offshore wind turbine foundations, characterized in that, It includes: Upper internal expansion clamping device; Lower internal expansion clamping device; Underwater automatic cutting device; And steel wire rope; The upper and lower internal expansion clamping devices are connected by a steel wire rope. The length of the steel wire rope is determined according to the height of the foundation pile above the water surface, the water depth, and the depth below the mud surface. The upper flange of the underwater automatic cutting device is connected to the bottom flange of the lower internal expansion clamping device. The underwater automatic cutting device is driven by an underwater module electric steel to rotate the inner and outer rotary gear rings. The upper part of the cutting head is fixed to one of the inner and outer rotary gear rings, and the lower output end of the cutting head is arranged facing outward.

2. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 1, characterized in that: The upper internal expansion clamping device includes a first upper lifting lug, a first lower lifting lug, an upper support structure, a first upper reinforcing plate, a first lower reinforcing plate, a first annular guard plate, a number of first outer protective structures, and a number of first movable hydraulic clamping structures. The outer periphery of the first annular guard plate is provided with a number of outer protective structures and a corresponding number of first movable hydraulic clamping structures.

3. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 2, characterized in that: The lower internal expansion clamping device includes a second upper lifting lug, a second upper reinforcing plate, a second lower reinforcing plate, a second annular guard plate, several second outer protective structures, several second movable hydraulic clamping structures, a bottom sealing plate, and a lower flange. Several second outer protective structures and a corresponding number of second movable hydraulic clamping structures are respectively provided on the outer periphery of the second annular guard plate.

4. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 3, characterized in that: The first and second annular guard plates are the same type of annular guard plates, the first and second outer protective structures are the same type of outer protective structures, and the first and second movable hydraulic clamping structures are the same movable chamber hydraulic clamping mechanisms.

5. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 4, characterized in that: The outer protective structure consists of several steel plates welded onto a ring-shaped protective plate, and an outer protective mechanism is provided between each group of hydraulic clamping mechanisms of adjacent active chambers.

6. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 4, characterized in that: Each set of movable hydraulic clamping structures is equipped with a clamping support head, an electromagnetic adsorption plate, a cylinder connecting plate, a cylinder, and a cylinder base. When the cylinder is working, the cylinder drives the clamping support head to support the inner wall of the foundation pile. Then, the solenoid valve is energized and the electromagnetic adsorption plate is firmly adsorbed onto the inner wall of the foundation pile.

7. The intelligent dismantling and resource recycling system for offshore wind turbine foundations according to claim 3, characterized in that: The bottom sealing plate of the lower internal expansion clamping device has a channel hole.

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