A single pile anti-scour joint device at sea

Abstract

The present invention discloses an offshore single pile anti-scour coupling device, which belongs to the field of marine platform pile foundation protection technology, and includes a fixing ring, which is sleeved on the outside of the foundation pile, and the inner diameter of the fixing ring is larger than the outer diameter of the foundation pile. The present invention is a device in which a support member composed of a fixing sleeve, a slide rod, a connecting wire, a shrinkage groove, and a tension spring is evenly arranged in an annular array between the bottom of a perforated high-strength geotextile and the fixing ring, and the spokes of the support member converge to the fixing ring. In addition, the connecting wire on the support member away from the fixing ring is connected to the suspension mechanism, so that during the installation process, the device is connected to the suspension mechanism through a crane, which can cause traction on the connecting wire, and move the slide rod inside the fixing sleeve to between the two groups of fixing sleeves. At this time, the perforated geotextile is in an expanded state. When the perforated geotextile descends to the bottom of the foundation pile, it can be expanded in a circular shape, thereby ensuring the laying effect of the perforated geotextile.

Description

Technical Field

[0001] The present invention relates to an anti-scour coupling device, in particular to an offshore single pile anti-scour coupling device, and belongs to the technical field of marine platform pile foundation protection. Background Art

[0002] In marine engineering, most oil platforms are based on pile structures. The construction of the platform changes the original hydrodynamic conditions in the area, creating secondary flows in front of the piles and vortices around them. This accelerates the flow around the piles, causing the mobilization and migration of sediment. This can cause localized scouring of the seabed soil around the piles, forming scour pits and thus affecting the stability of the platform.

[0003] In the prior art, for example, the utility model with application number 202222691100.6 discloses a pile foundation scour protection device. To solve the scour problem, stone or sandbags are dumped for protection. However, the stones often collide with the single pile foundation, causing damage to the single pile foundation. The cost of laying bionic grass is relatively high. The construction of cement interlocking rows requires laying multiple interlocking row units in sequence around the pile foundation, overlapping each other and surrounding the pile foundation for a circle. A single interlocking row unit is easily washed away by the seabed current, and there is a large gap between the interlocking row and the outer wall of the pile foundation, which easily forms vortices and causes local severe scour. By making the interlocking row a soft row structure, it can adapt to changes in the seabed and prevent the bottom from being hollowed out. By providing a soft bushing, the gap between the pile foundation root and the interlocking row can be closed, isolating the sea current from scouring the seabed around the pile foundation, preventing sediment loss, and further enhancing the protection effect. At the same time, the soft material of the soft bushing can avoid damage to the pile foundation during construction and installation.

[0004] Similar to the above-mentioned pile foundation scour protection device, there are still some shortcomings:

[0005] Although the chain row is connected as a whole, it is a soft structure as a whole. During the laying process, after the chain row is placed under the pile body, it is in a weak state and cannot automatically stretch outward. It is necessary to manually dive to the bottom of the foundation pile to adjust the position. The installation is very inconvenient, and the depth of the foundation pile is not fixed. Artificial seabed operations have great safety hazards. In addition, the method of using concrete blocks to increase the counterweight on the top of the chain row makes its bottom fit with the seabed and the connection stability is low.

[0006] Therefore, an offshore single pile anti-scour coupling device is designed to optimize the above problems. Summary of the Invention

[0007] The main purpose of the present invention is to provide an offshore single pile anti-scour coupling device, which is used to solve the problems of unreliable anti-scour and difficult installation. A support member consisting of a fixed sleeve, a slide rod, a connecting wire, a shrinkage groove, and a tension spring is evenly arranged in a circular array between the bottom of the perforated geotextile and the fixed ring, and the spokes of the support member are gathered to the fixed ring. In addition, the connecting wire on the support member away from the fixed ring is connected to the suspension mechanism, so that during the installation process, the device is connected to the suspension mechanism through the crane, which can cause pulling on the connecting wire and move the slide rod inside the fixed sleeve to between the two groups of fixed sleeves. At this time, the perforated geotextile is in an expanded state. When the perforated geotextile descends to the bottom of the foundation pile, it can be expanded in a circular shape to ensure the laying effect of the perforated geotextile. After the crane is separated from the suspension mechanism, the tension spring can automatically retract the slide rod into the inside of the fixed sleeve, and the perforated geotextile returns to a soft state and can fit tightly to the bottom of the sea. The installation of the device does not require manual diving operations, which improves the installation speed and is more practical. By arranging annular reinforcement ribs on the top of the perforated geotextile and evenly arranging double-strand nylon ropes between the annular reinforcement ribs, marine organisms such as seaweed or coral can be clamped and fixed by the double-strand nylon ropes during use, and the growth of marine organisms can be used to increase the connection stability between the perforated geotextile and the seabed, and can improve the regional environment and reduce the seawater flow rate in the sea area. It is more practical. By arranging a plug-in positioning mechanism consisting of a chassis, rack, gear, screw, polygonal slide, and rectangular inner screw tube at the bottom of the fixing ring, the gravity when the fixing ring is pressed down can be used during the installation of the device to automatically control the linear sliding of the rectangular inner screw tube and fit it on the surface of the foundation pile, thereby improving the stability of the device in the initial installation.

[0008] The above paragraph is not clearly structured, and the advantages of the new device in terms of its anti-scour performance and its low installation cost are not clearly stated.

[0009] An offshore single pile anti-scour coupling device includes a fixing ring, which is sleeved on the outside of the foundation pile, and the inner diameter of the fixing ring is larger than the outer diameter of the foundation pile. A geotextile with holes is fixed to the outer edge of the fixing ring, and the shape of the geotextile with holes is annular. The bottom of the geotextile with holes is evenly provided with support members in an annular array, and the extension lines of the support members intersect at the center of the fixing ring. The outer edge of the geotextile with holes is evenly provided with suspension mechanisms, the top of the inner side of the fixing ring is provided with a sealing shielding member that fits with the side of the foundation pile, the bottom end of the fixing ring is provided with a plug-in positioning mechanism connected to the seabed, and the top of the geotextile with holes is provided with a slow flow fixing component.

[0010] Preferably: the support member includes a cloth cover, a fixed sleeve, a sliding rod, a connecting steel wire, a shrinkage groove and a tension spring. The cloth cover is fixed on the geotextile with holes, and the interior of the cloth cover is hollow. The interior of the cloth cover is evenly fixed with fixed sleeves along the length direction. The interior of the fixed sleeve is slidably installed with sliding rods. Connecting steel wires are provided between the ends of the sliding rods. Adjacent sliding rods are fixedly connected by connecting steel wires. Shrinkage grooves are evenly provided on the outside of the fixing ring. Tension springs are fixed on the inner ends of the shrinkage grooves. The ends of the tension springs are connected to the ends of the connecting steel wires. The connecting steel wire inside the cloth cover away from one end of the fixing ring extends to the outside of the cloth cover and is connected to the suspension mechanism.

[0011] Preferably: the suspension mechanism includes a sleeve, a hanging ring, a fixed block, a vertical rod, a first conical block, a limiting groove, a trapezoidal plug-in block, a return spring and a second conical block, the fixed block is fixed to the end of the connecting steel wire, the top of the fixed block is vertically fixed with the vertical rod, the top of the vertical rod is fixed with the first conical block, the second conical block is slidably arranged on the vertical rod, the first conical block and the second conical block are symmetrically arranged, the outer side of the first conical block is sleeved with a sleeve, the top of the sleeve is fixed with a hanging ring, and the bottom inside the sleeve is evenly provided with limiting grooves, the inside of the limiting grooves are all slidably installed with trapezoidal plug-ins that fit with the bottom of the first conical block, and a return spring is provided between the trapezoidal plug-in block and the end of the limiting groove.

[0012] Preferably, the diameter of the top end of the second conical block is larger than the diameter of the bottom end of the first conical block, and the top of the second conical block is provided with a groove having the same diameter as that of the bottom end of the first conical block.

[0013] Preferably: the sealing shielding member includes a rubber shield and a traction wire, the rubber shield is evenly fixed on the top of the fixing ring in a circular array, and the sides of adjacent rubber shields fit together, and the outer sides of the rubber shields are all installed with traction wires, and the ends of the traction wires away from the rubber shields are connected to the connecting steel wires inside the shrinkage groove.

[0014] Preferably, mounting grooves are evenly opened on the inner side of the fixing ring, extrusion springs are installed at the inner ends of the mounting grooves, balls are provided at the open ends of the mounting grooves, and the balls are rotatably installed inside the mounting grooves, and the ends of the extrusion springs fit the sides of the balls.

[0015] Preferably, the slow-flow fixing assembly includes annular reinforcement ribs, double-strand nylon ropes and marine organisms. Two groups of annular reinforcement ribs are provided, and the inner diameters of the two groups of annular reinforcement ribs are different. Both groups of annular reinforcement ribs are fixed on the top of the perforated geotextile. Double-strand nylon ropes are evenly fixed between the two groups of annular reinforcement ribs, and marine organisms are clamped and installed inside the double-strand nylon ropes.

[0016] Preferably: the plug-in positioning mechanism includes a chassis, a rack, a gear, a screw, a polygonal slide and a rectangular inner screw tube. The chassis is arranged parallel to the bottom of the fixed ring. The bottom of the fixed ring is evenly and vertically installed with a rack, and the rack passes through the chassis and is slidably connected to the chassis. The inside of the chassis is rotatably installed with a gear that meshes with the rack. The teeth on the side of the rack do not extend to the bottom end of the rack. Polygonal slides are evenly opened on the inner side of the chassis. Rectangular inner screw tubes are slidably installed inside the polygonal slides, and screws threadedly connected to the rectangular inner screw tube are fixed on the sides of the gear.

[0017] Preferably, the bottom end of the rack is tapered, and the end of the rectangular inner spiral tube away from the rack is provided with anti-slip grooves.

[0018] Preferably, counterweights are evenly fixed on the outer side of the bottom of the perforated geotextile in a circular array.

[0019] The beneficial effects of the present invention are:

[0020] The invention provides an offshore single pile anti-scouring joint device, wherein a support member consisting of a fixing sleeve, a sliding rod, a connecting wire, a contraction groove, and a tension spring is evenly arranged in an annular array between the bottom of the perforated geotextile and the fixing ring, and the spokes of the support member are gathered to the fixing ring. In addition, the connecting wire away from the fixing ring on the support member is connected to the suspension mechanism, so that during the installation process of the device, the crane is connected to the suspension mechanism, which can cause pulling of the connecting wire, and move the sliding rod located inside the fixing sleeve to move between the two sets of fixing sleeves. At this time, the perforated geotextile is in an expanded state, and when the perforated geotextile is lowered to the bottom of the foundation pile, it can be expanded in a circular shape to ensure the laying effect of the perforated geotextile. After the crane is separated from the suspension mechanism, the tension spring can automatically retract the sliding rod into the inside of the fixing sleeve, and the perforated geotextile returns to a soft state and can be tightly fitted to the seabed. The installation of the device does not require manual diving operation, thereby improving the installation speed and having higher practicality.

[0021] By arranging annular reinforcement ribs on the top of the perforated geotextile and evenly arranging double-strand nylon ropes between the annular reinforcement ribs, marine organisms such as seaweed or corals can be clamped and fixed by the double-strand nylon ropes during use. The growth of marine organisms is utilized to increase the connection stability between the perforated geotextile and the seabed, improve the regional environment, and reduce the seawater flow rate in the sea area, making it more practical.

[0022] By arranging a plug-in positioning mechanism consisting of a chassis, rack, gear, screw, polygonal slide groove, and rectangular inner screw tube at the bottom of the fixed ring, the gravity when the fixed ring is pressed down can be used to automatically control the linear sliding of the rectangular inner screw tube and fit it onto the surface of the foundation pile during the installation of the device, thereby improving the stability of the device in the initial installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram showing the hoisting state of a preferred embodiment of an offshore single pile anti-scour connection device of the present invention;

[0024] Figure 2 This is a diagram showing the laying state of a preferred embodiment of an offshore monopile anti-scour connection device of the present invention;

[0025] Figure 3 A partial cross-sectional view of a preferred embodiment of an offshore monopile anti-scour coupling device of the present invention in a laying state;

[0026] Figure 4 This is a cross-sectional structural diagram of a fixing ring in a preferred embodiment of an offshore monopile anti-scour coupling device of the present invention;

[0027] Figure 5 This is a preferred embodiment of an offshore single pile anti-scour joint device of the present invention. Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a diagram showing the hoisting state of a support member in a preferred embodiment of an offshore single pile anti-scour connection device of the present invention;

[0029] Figure 7 This is a diagram showing the initial state of a support member in a preferred embodiment of an offshore monopile anti-scour coupling device of the present invention;

[0030] Figure 8 This is a diagram of the suspension mechanism of a preferred embodiment of an offshore single pile anti-scour coupling device of the present invention.

[0031] In the figure: 1. fixing ring; 2. perforated geotextile; 3. support member; 4. suspension mechanism; 5. sealing shield; 6. annular reinforcement rib; 7. double-strand nylon rope; 8. marine life; 9. cloth cover; 10. fixing sleeve; 11. sliding rod; 12. connecting wire; 13. shrinkage groove; 14. pulling spring; 15. rubber baffle; 16. traction wire; 17. counterweight; 18. plug-in positioning mechanism; 19. installation groove; 20. extrusion spring; 21. ball; 22. sleeve; 23. hanging ring; 24. fixing block; 25. vertical rod; 26. first conical block; 27. limiting groove; 28. trapezoidal plug-in block; 29. ​​reset spring; 30. second conical block; 31. chassis; 32. rack; 33. gear; 34. screw; 35. polygonal slide; 36. rectangular inner screw tube. DETAILED DESCRIPTION

[0032] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is described in further detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0033] like Figures 1-8 As shown, this embodiment provides an offshore single pile anti-scour coupling device, including a fixing ring 1, which is sleeved on the outside of the foundation pile, and the inner diameter of the fixing ring 1 is larger than the outer diameter of the foundation pile, and a perforated geotextile 2 is fixed to the outer edge of the fixing ring 1, and the perforated geotextile 2 is in the shape of a ring, and the bottom of the perforated geotextile 2 is evenly provided with support members 3 in a ring array for unfolding the perforated geotextile 2, and the spokes of the support members 3 are gathered to the fixing ring 1, and the outer edge of the perforated geotextile 2 is evenly provided with a suspension mechanism 4, and the top of the inner side of the fixing ring 1 is provided with a sealing shielding member 5 that fits with the side of the foundation pile, the bottom end of the fixing ring 1 is provided with a plug-in positioning mechanism 18 connected to the seabed, and the top of the perforated geotextile 2 is provided with a slow-flow fixing component.

[0034] The overall working principle: when in use, first place the fixing ring 1 horizontally, and unfold the perforated geotextile 2 outward into a circle, then connect the hook on the crane to the suspension mechanism 4, and use the support 3 to position the shape of the perforated geotextile 2. When the perforated geotextile 2 is lifted, it is like an umbrella that shrinks. Then, the device is hoisted to the top of the foundation pile, the fixing ring 1 is set on the foundation pile, and the device is slowly released. In the process of releasing the perforated geotextile 2, its shape is fixed and will not change. When the fixing ring 1 contacts the seabed, the positioning mechanism 18 is first inserted into the fixing ring 1. The position of the fixed ring 1 is fixed, and then as the crane cable is released, the perforated geotextile 2 unfolds in an umbrella shape. After the perforated geotextile 2 fits the seabed, the hook is separated from the suspension mechanism 4. At this time, the support member 3 releases the support state of the perforated geotextile 2, and the perforated geotextile 2 returns to a soft state, which can better fit the seabed. The sealing shield 5 seals the fixed ring 1 and the foundation pile, blocks the water flow, and prevents the water flow from impacting the mud at the bottom of the foundation pile. In addition, during use, the slow-flow fixing component is used to reduce the rate of water flow around the foundation pile.

[0035] In this embodiment, the support member 3 includes a cloth cover 9, a fixed sleeve 10, a sliding rod 11, a connecting steel wire 12, a shrinkage groove 13 and a pulling spring 14. The cloth cover 9 is fixed on the perforated geotextile 2, and the interior of the cloth cover 9 is hollow. The interior of the cloth cover 9 is evenly fixed with fixed sleeves 10 along the length direction. The interior of the fixed sleeve 10 is slidably installed with sliding rods 11. Connecting steel wires 12 are provided between the ends of the sliding rods 11. Adjacent sliding rods 11 are fixedly connected by connecting steel wires 12. Shrinkage grooves 13 are evenly opened on the outside of the fixing ring 1. The inner ends of the shrinkage grooves 13 are fixed with pulling springs 14. The ends of the pulling springs 14 are connected to the ends of the connecting steel wire 12. The connecting steel wire 12 at one end of the cloth cover 9 away from the fixing ring 1 extends to the outside of the cloth cover 9 and is connected to the suspension mechanism 4.

[0036] Local working principle: After the perforated geotextile 2 is unfolded into a circle, when the hook is connected to the suspension mechanism 4, the pulling spring 14 will be pulled. At this time, the pulling spring 14 is stretched, and the sliding rod 11 that initially exists only inside a set of fixed sleeves 10 is pulled. The two ends of the sliding rod 11 are respectively inserted into the interior of the two sets of fixed sleeves 10. The interior of the cloth cover 9 is a supportable straight rod. Therefore, after the device contacts the ground, the perforated geotextile 2 is supported and lowered and laid on the seabed. Then the hook is separated from the suspension mechanism 4, the pulling spring 14 is reset, and the sliding rod 11 is reset. At this time, the interior of the cloth cover 9 returns to a soft state, and the perforated geotextile 2 can be deformed and fitted according to the shape of the seabed.

[0037] In this embodiment, the suspension mechanism 4 includes a sleeve 22, a hanging ring 23, a fixed block 24, a vertical rod 25, a first conical block 26, a limiting groove 27, a trapezoidal plug 28, a return spring 29 and a second conical block 30. The fixed block 24 is fixed to the end of the connecting steel wire 12. The top of the fixed block 24 is vertically fixed with the vertical rod 25. The top of the vertical rod 25 is fixed with the first conical block 26. The second conical block 30 is slidably arranged on the vertical rod 25. The first conical block 26 and the second conical block 30 are symmetrically arranged. The outer side of the first conical block 26 is sleeved with a sleeve 22, the top of the sleeve 22 is fixed with a hanging ring 23, and the bottom inside the inner side of the sleeve 22 is evenly provided with limiting grooves 27. The inside of the limiting grooves 27 are all slidably installed with trapezoidal plugs 28 that fit with the bottom of the first conical block 26. A return spring 29 is provided between the trapezoidal plug 28 and the end of the limiting groove 27.

[0038] Partial working principle: When the device is hoisted, the hook is connected to the hanging ring 23. At this time, the trapezoidal plug 28 is located at the bottom of the first conical block 26. When hanging, the first conical block 26 is prevented from coming out from the inside of the sleeve 22. After the perforated geotextile 2 is installed, the sleeve 22 is controlled to move downward. The bottom inclined surface of the trapezoidal plug 28 contacts the top of the second conical block 30. By utilizing the weight of the sleeve 22, the trapezoidal plug 28 is squeezed into the inside of the limiting groove 27. When the trapezoidal plug 28 drops to the second conical block 30, the trapezoidal plug 28 is pressed into the inside of the limiting groove 27. After reaching the bottom, the trapezoidal plug 28 extends out again and fits with the surface of the second tapered block 30, and then controls the rise of the sleeve 22. At this time, the first tapered block 26 fits with the second tapered block 30, and the trapezoidal plug 28 slides along the inclined surface of the second tapered block 30, and after moving to the top of the second tapered block 30, it separates from the second tapered block 30 and fits on the inclined surface of the first tapered block 26. Then the trapezoidal plug 28 separates from the first tapered block 26, and the hoisting state is released. There is no need for manual unhooking, which is more practical and safer.

[0039] In this embodiment, the diameter of the top of the second conical block 30 is larger than the diameter of the bottom of the first conical block 26 , and a groove having the same diameter as the bottom of the first conical block 26 is formed on the top of the second conical block 30 .

[0040] Local working principle: After the first conical block 26 and the second conical block 30 are fitted together, the first conical block 26 will enter the interior of the second conical block 30, ensuring that the trapezoidal plug 28 can directly enter the surface of the first conical block 26 after sliding out of the second conical block 30.

[0041] In this embodiment, the sealing shield 5 includes a rubber shield 15 and a traction wire 16. The rubber shield 15 is evenly fixed on the top of the fixing ring 1 in an annular array, and the sides of adjacent rubber shields 15 are in contact with each other. The outer side of the rubber shield 15 is installed with a traction wire 16, and the end of the traction wire 16 away from the rubber shield 15 is connected to the connecting steel wire 12 inside the shrinkage groove 13.

[0042] Partial working principle: When the connecting wire 12 is pulled, the top of the rubber shield 15 will be expanded outward by the traction wire 16, so the end of the rubber shield 15 will not contact the surface of the pile when the device moves downward, reducing friction resistance.

[0043] In this embodiment, mounting grooves 19 are evenly opened on the inner side of the fixing ring 1, and the inner ends of the mounting grooves 19 are all installed with extrusion springs 20. The open ends of the mounting grooves 19 are all provided with balls 21, and the balls 21 are rotatably installed inside the mounting grooves 19. The ends of the extrusion springs 20 are in contact with the sides of the balls 21.

[0044] Partial working principle: During the downward movement of the device, the balls 21 come into contact with the surface of the pile, reducing the friction between the fixing ring 1 and the pile.

[0045] In this embodiment, the slow-flow fixing component includes annular reinforcement ribs 6, double-strand nylon ropes 7 and marine organisms 8. There are two groups of annular reinforcement ribs 6, and the inner diameters of the two groups of annular reinforcement ribs 6 are different. The two groups of annular reinforcement ribs 6 are both fixed on the top of the perforated geotextile 2. Double-strand nylon ropes 7 are evenly fixed between the two groups of annular reinforcement ribs 6, and marine organisms 8 are clamped and installed inside the double-strand nylon ropes 7.

[0046] Partial working principle: Before the installation of the device, the roots of marine organisms 8 such as seaweed or coral are inserted into the inside of the double-strand nylon rope 7, and the double-strand nylon rope 7 squeezes and fixes the marine organisms 8. After the device is installed, the roots of the marine organisms 8 can grow downward and be buried in the seabed, which not only improves the environment, but also reduces the impact of water flow on the foundation piles, and also strengthens the installation stability of the device.

[0047] In this embodiment, the plug-in positioning mechanism 18 includes a chassis 31, a rack 32, a gear 33, a screw 34, a polygonal slide 35 and a rectangular inner screw 36. The chassis 31 is arranged parallel to the bottom of the fixed ring 1. The bottom of the fixed ring 1 is evenly and vertically installed with a rack 32, and the rack 32 passes through the chassis 31 and is slidably connected to the chassis 31. The inside of the chassis 31 is rotatably installed with a gear 33 that meshes with the rack 32. The teeth on the side of the rack 32 do not extend to the bottom end of the rack 32. Polygonal slides 35 are evenly opened on the inner side of the chassis 31. Rectangular inner screws 36 are slidably installed inside the polygonal slides 35. The sides of the gear 33 are fixed with screws 34 threadedly connected to the rectangular inner screw 36.

[0048] Local working principle: During the descent of the control device, the rack 32 will first contact the seabed and be inserted into the seabed. Then the chassis 31 will fit on the seabed. As the device continues to move downward, the chassis 31 will contact the fixed ring 1. The rack 32 will control the rotation of the gear 33, thereby driving the screw 34 to rotate. The rotation of the screw 34 can push the rectangular inner screw tube 36 horizontally and fit it on the surface of the foundation pile, thereby correcting and aligning the position of the device and ensuring the stability of the installation.

[0049] In this embodiment, the bottom end of the rack 32 is tapered, and the end of the rectangular inner coil 36 away from the rack 32 is provided with anti-slip grooves.

[0050] Partial working principle: The tapered design at the bottom of the rack 32 enables it to be inserted into the seabed more conveniently, while the anti-slip grooves at the end of the rectangular inner spiral tube 36 increase the stability of the connection with the foundation pile.

[0051] In this embodiment, counterweights 17 are evenly fixed in a circular array on the outer side of the bottom of the perforated geotextile 2 .

[0052] Partial working principle: The use of the counterweight block 17 can accelerate the falling of the device and increase the gravity of the outer end when the perforated geotextile 2 is unfolded and released, ensuring the pulling effect on the connecting steel wire 12.

[0053] The above is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which fall within the scope of protection of the present invention.

Claims

1. An offshore single pile anti-scour connection device, comprising a fixing ring (1), characterized in that: A fixing ring (1) is sleeved on the outside of the foundation pile, and the inner diameter of the fixing ring (1) is larger than the outer diameter of the foundation pile. A perforated geotextile (2) is fixed on the outer side of the fixing ring (1), and the perforated geotextile (2) is in the shape of a ring. Support members (3) are evenly arranged in a ring array at the bottom of the perforated geotextile (2), and the spokes of the support members (3) converge on the fixing ring (1). A suspension mechanism (4) is evenly arranged on the outer side of the perforated geotextile (2). A sealing shielding member (5) that fits the side of the foundation pile is provided on the top of the inner side of the fixing ring (1). A plug-in positioning mechanism (18) connected to the seabed is provided at the bottom of the fixing ring (1). A slow-flow fixing component is provided on the top of the perforated geotextile (2); The support member (3) includes a cloth cover (9), a fixed sleeve (10), a slide rod (11), a connecting steel wire (12), a contraction groove (13) and a tension spring (14). The cloth cover (9) is fixed on the perforated geotextile (2), and the interior of the cloth cover (9) is hollow. The interior of the cloth cover (9) is evenly fixed with a fixed sleeve (10) along the length direction. The interior of the fixed sleeve (10) is slidably installed with a slide rod (11). The ends of the slide rods (11) are all provided with a connecting steel wire (12). Adjacent slide rods (11) are fixedly connected by the connecting steel wire (12). Contraction grooves (13) are evenly opened on the outside of the fixed ring (1). The inner ends of the contraction grooves (13) are all fixed with a tension spring (14). The end of the tension spring (14) is connected to the end of the connecting steel wire (12). The connecting steel wire (12) at one end of the cloth cover (9) away from the fixed ring (1) extends to the outside of the cloth cover (9) and is connected to the suspension mechanism (4).

2. The offshore monopile anti-scour connection device according to claim 1, characterized in that: The suspension mechanism (4) includes a sleeve (22), a hanging ring (23), a fixed block (24), a vertical rod (25), a first tapered block (26), a limiting groove (27), a trapezoidal plug (28), a return spring (29) and a second tapered block (30). The fixed block (24) is fixed to the end of the connecting wire (12). The top of the fixed block (24) is vertically fixed with the vertical rod (25). The top of the vertical rod (25) is fixed with the first tapered block (26). The vertical rod (25) is slidably provided with a second tapered block. Block (30), the first conical block (26) and the second conical block (30) are symmetrically arranged, the outer side of the first conical block (26) is provided with a sleeve (22), the top of the sleeve (22) is fixed with a hanging ring (23), the bottom of the inner side of the sleeve (22) is evenly provided with a limiting groove (27), the interior of the limiting groove (27) is slidably installed with a trapezoidal plug (28) that fits with the bottom of the first conical block (26), and a return spring (29) is provided between the trapezoidal plug (28) and the end of the limiting groove (27).

3. The offshore monopile anti-scour joint device according to claim 2, characterized in that: The diameter of the top end of the second conical block (30) is greater than the diameter of the bottom end of the first conical block (26), and the top of the second conical block (30) is provided with a groove having the same diameter as the bottom end of the first conical block (26).

4. The offshore monopile anti-scour connection device according to claim 3, characterized in that: The sealing shield (5) includes a rubber shield (15) and a traction wire (16). The rubber shields (15) are evenly fixed on the top of the fixed ring (1) in a circular array, and the sides of adjacent rubber shields (15) are in contact with each other. The outer sides of the rubber shields (15) are all installed with traction wires (16), and the ends of the traction wires (16) away from the rubber shields (15) are all connected to the connecting wires (12) inside the shrinkage groove (13).

5. The offshore monopile anti-scour connection device according to claim 1, characterized in that: The inner side of the fixing ring (1) is evenly provided with mounting grooves (19), the inner ends of the mounting grooves (19) are all provided with extrusion springs (20), the open ends of the mounting grooves (19) are all provided with balls (21), and the balls (21) are rotatably installed inside the mounting grooves (19), and the ends of the extrusion springs (20) are in contact with the sides of the balls (21).

6. The offshore monopile anti-scour connection device according to any one of claims 1 to 5, characterized in that: The slow-flow fixing component includes an annular reinforcement rib (6), a double-strand nylon rope (7) and a marine organism (8). The annular reinforcement rib (6) is provided with two groups, and the inner diameters of the two groups of annular reinforcement ribs (6) are different. The two groups of annular reinforcement ribs (6) are both fixed on the top of the perforated geotextile (2). The double-strand nylon rope (7) is evenly fixed between the two groups of annular reinforcement ribs (6), and the marine organism (8) is clamped and installed inside the double-strand nylon rope (7).

7. The offshore monopile anti-scour joint device according to claim 6, characterized in that: The plug-in positioning mechanism (18) includes a chassis (31), a rack (32), a gear (33), a screw (34), a polygonal chute (35) and a rectangular inner screw tube (36). The chassis (31) is arranged parallel to the bottom of the fixed ring (1). The bottom of the fixed ring (1) is evenly and vertically installed with a rack (32), and the rack (32) passes through the chassis (31) and is slidably connected to the chassis (31). The interior of the chassis (31) is rotatably installed with a gear (33) meshing with the rack (32). The teeth on the side of the rack (32) do not extend to the bottom end of the rack (32). The inner side of the chassis (31) is evenly opened with a polygonal chute (35). The interior of the polygonal chute (35) is slidably installed with a rectangular inner screw tube (36). The side of the gear (33) is fixed with a screw (34) threadedly connected to the rectangular inner screw tube (36).

8. The offshore monopile anti-scour joint device according to claim 7, characterized in that: The bottom end of the rack (32) is tapered, and one end of the rectangular inner spiral tube (36) away from the rack (32) is provided with anti-slip grooves.

9. The offshore monopile anti-scour joint device according to claim 1, characterized in that: Counterweights (17) are evenly fixed in a circular array on the outer side of the bottom of the perforated geotextile (2).

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