Sewage isolation device for offshore wind power pile sinking and construction method

Abstract

The invention relates to the technical field of offshore wind power, and discloses a dirt isolation device for offshore wind power pile sinking and a construction method. According to the sewage isolation device for offshore wind power pile sinking, the steel pipe pile is sleeved with the barrel body, the barrel body is arranged above the mud surface, the sewage isolation top plate is arranged on the side, away from the mud surface, of the barrel body, and the sewage isolation top plate is arranged between the inner side wall of the barrel body and the outer side wall of the steel pipe pile; the sewage isolation top plate, the barrel body and the mud surface define the sewage isolation cavity, generated pollutants such as silt can be effectively isolated and collected in the pile sinking construction process, diffusion is avoided, and pollution of pile sinking construction activities to the sea area environment is reduced. And meanwhile, due to the design of the dirt isolation barrel, frequent cleaning in the construction process is avoided, so that the construction efficiency is improved, and the maintenance cost caused by disturbance of pollutants such as silt and the like in the pile sinking construction process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power, and in particular to a pollution isolation device and a construction method for offshore wind power pile sinking. Background Art

[0002] At a time when the global energy structure is undergoing a profound transformation, offshore wind power, as a core component of the clean energy sector, is showing an increasingly prominent key role and booming development momentum.

[0003] The diversified design of offshore wind power infrastructure has provided a solid foundation for the rapid development of this field. Specifically, the current offshore wind power foundation types include gravity foundation, jacket foundation, high pile foundation, floating foundation and single pile foundation. Among them, jacket foundation and single pile foundation have become the mainstream choice in the industry due to their wide application and technical maturity, and they are mostly in the form of steel pipe piles.

[0004] In the construction process of offshore wind power pile foundation, hydraulic pile hammers are widely used for pile sinking. However, while this construction process brings efficient construction, it also causes environmental problems that cannot be ignored. Specifically, the vibration generated during the pile sinking process will disturb the seabed sediment, causing the sediment to re-suspend, which in turn causes turbidity in the water, polluting the water quality of local sea areas and may have an adverse impact on the natural environment of the seabed sediments. Summary of the invention

[0005] In view of this, the present invention provides a pollution isolation device and a construction method for offshore wind power pile driving to solve the problem of disturbance of surrounding seabed sediment during the pile driving construction process.

[0006] In the first aspect, the present invention provides a pollution isolation device for offshore wind power pile sinking, which is used for pile sinking construction and includes a pollution isolation cylinder. The pollution isolation cylinder includes a cylinder body and a pollution isolation top plate, the cylinder body is sleeved on the outside of the steel pipe pile, and a gap is left between the inner wall of the cylinder body and the outer wall of the steel pipe pile, the pollution isolation top plate is installed on the inner wall of the cylinder body, and the pollution isolation top plate extends in the direction close to the steel pipe pile; wherein, the cylinder body is used to be placed above the mud surface, the pollution isolation top plate is located on the side of the cylinder body away from the mud surface, and the pollution isolation top plate, the cylinder body and the mud surface enclose a pollution isolation chamber.

[0007] Beneficial effect: By sleeve-mounting the cylinder body on the outside of the steel pipe pile, placing the cylinder body above the mud surface, setting the dirt-isolating top plate on the side of the cylinder body away from the mud surface, and setting the dirt-isolating top plate between the inner wall of the cylinder body and the outer wall of the steel pipe pile, the dirt-isolating top plate, the cylinder body and the mud surface enclose a dirt-isolating chamber, which can effectively isolate and collect the mud and other pollutants generated during the pile sinking construction process, avoid diffusion, and reduce the pollution of the marine environment caused by the pile sinking construction activities. At the same time, the design of the dirt-isolating cylinder avoids frequent cleaning during the construction process, thereby improving construction efficiency and reducing the maintenance cost of the mud and other pollutants disturbed during the pile sinking construction process.

[0008] In an optional embodiment, the dirt-isolating cylinder further includes an anti-sinking bottom plate, the anti-sinking bottom plate is located on a side of the cylinder body close to the mud surface, and the anti-sinking bottom plate is installed on the outer side wall of the cylinder body.

[0009] Beneficial effects: By installing an anti-sinking bottom plate on the outer side of the end of the dirt-isolating cylinder body close to the mud surface, the dirt-isolating cylinder is made more stable on the mud surface, preventing the cylinder from sinking or tilting due to natural factors such as waves and tides, ensuring the continued effectiveness and safety of the dirt-isolating device during construction. At the same time, the design of the anti-sinking bottom plate enables the dirt-isolating cylinder to better adapt to different mud and terrain conditions, that is, whether it is soft mud, hard mud or sandy seabed, the anti-sinking bottom plate can provide stable support to ensure the normal operation of the dirt-isolating device.

[0010] In an optional embodiment, the pollution isolation device for offshore wind power pile sinking also includes a plurality of reinforcements, and the plurality of reinforcements are divided into at least two groups, wherein the two groups of reinforcements are respectively used to be installed at the connection between the cylinder body and the anti-sinking bottom plate and at the connection between the cylinder body and the pollution isolation top plate.

[0011] Beneficial effect: By adding multiple reinforcements, the structural strength of the location where they are located can be improved. Specifically, multiple reinforcements are arranged in groups, and in two groups of reinforcements, one group of reinforcements is used to be installed at the connection between the cylinder body and the anti-sinking bottom plate, and the other group of reinforcements is used to be installed at the connection between the cylinder body and the dirt isolation top plate, so as to improve the structural strength of these connection parts, so that when the dirt isolation device is subjected to the forces during the construction process, the integrity of the dirt isolation cylinder is ensured, and the dirt isolation cylinder is prevented from failing due to structural damage. At the same time, the provision of reinforcements can reduce fatigue and wear of each connection part caused by long-term stress, help improve the durability of the dirt isolation device, extend its construction life, and reduce the frequency of replacement and maintenance. In addition, since offshore wind power pile construction usually faces complex marine environments and harsh climatic conditions, the installation of reinforcements enables the dirt isolation device to better adapt to these challenges, ensuring that offshore wind power pile construction can still proceed normally under extreme conditions.

[0012] In an optional embodiment, a gap is left between the inner wall of the pollution-isolating top plate and the outer wall of the cylinder body; the pollution-isolating device for offshore wind power pile sinking also includes a flexible buffer, which is installed on the inner end of the pollution-isolating top plate.

[0013] Beneficial effects: By leaving a gap between the inner wall of the pollution isolation top plate and the outer wall of the cylinder body, and arranging a flexible buffer in the gap, the direct contact between the pollution isolation top plate and the cylinder body is effectively reduced, thereby reducing the degree of wear caused by friction caused by contact, which can not only extend the service life of the pollution isolation device, but also reduce the noise and vibration caused by wear. At the same time, during the construction of offshore wind power pile sinking, the pollution isolation device may be deformed to a certain extent due to factors such as foundation settlement, wind and waves. The flexible buffer has a certain elasticity and adaptability, which can absorb these deformations and maintain the stability and integrity of the pollution isolation device.

[0014] In an optional embodiment, the pollution isolation device for offshore wind power pile sinking also includes a connecting piece, and the connecting piece is installed on the top of the pollution isolation top plate, or the connecting piece is installed on the outer side wall of the cylinder body.

[0015] Beneficial effects: By adding a connection piece to the top of the pollution isolation top plate, the pollution isolation device can be easily hoisted and transported. Especially in offshore wind power pile construction, the pollution isolation device often needs to be assembled and installed at sea. The connection piece can provide a convenient hoisting point, so that construction personnel can complete the assembly and installation of the pollution isolation device more efficiently. At the same time, the connection piece serves as a hoisting point to ensure that the pollution isolation device will not fall off or be damaged when subjected to force, thereby protecting the safety of construction personnel and equipment.

[0016] In an optional embodiment, the dirt-isolating top plate is an annular plate structure.

[0017] Beneficial effects: By setting the top plate of the pollution isolation device as an annular plate structure, the construction space can be effectively utilized, thereby improving the compactness of the pollution isolation device. At the same time, the annular plate structure can provide more uniform and stable support, making it less likely for the top plate of the pollution isolation device to deform or be damaged when subjected to various forces and pressures during the construction process, which helps to maintain the stability and integrity of the pollution isolation device and ensure its normal operation in harsh environments.

[0018] In an optional embodiment, the cylinder body is a cylindrical cylinder.

[0019] Beneficial effects: By making the cylinder body into a cylindrical cylinder, the cylinder body has excellent structural stability and can withstand various forces and pressures during the construction process, such as the impact force of the steel pipe pile when it sinks, the buoyancy of seawater, and the force exerted on the cylinder body by natural factors such as wind and waves, ensuring that the pollution isolation device can operate stably. At the same time, the cylindrical cylinder has advantages in fluid dynamics, can reduce water flow resistance, can reduce the impact on the surrounding marine environment, help protect the marine ecology and reduce construction noise.

[0020] In the second aspect, the present invention also provides a construction method for offshore wind power pile driving, which is applied to the pollution isolation device for offshore wind power pile driving provided in the first aspect, and the construction method includes: S1: prefabricating the pollution isolation device; S2: hoisting the steel pipe piles, and using the steel pipe piles' own weight to carry out preliminary pile driving; S3: hoisting the pollution isolation device, putting the pollution isolation device on the outside of the steel pipe piles, and lowering the pollution isolation device to the mud surface; S4: using the pile driving device to complete the pile driving of the steel pipe piles.

[0021] Beneficial effect: Since the construction method for offshore wind power pile sinking is applied to the pollution isolation device for offshore wind power pile sinking of the first aspect, it has the same effect as the pollution isolation device for offshore wind power pile sinking, and will not be described in detail here.

[0022] In an optional embodiment, step S1 includes: S101: the dirt-isolating top plate and the anti-sinking bottom plate are installed on the cylinder body; S102: two sets of reinforcement parts are respectively installed at the connection between the cylinder body and the anti-sinking bottom plate and at the connection between the cylinder body and the dirt-isolating top plate.

[0023] In an optional implementation, step S1 further includes: S103: installing the flexible buffer along the radial direction between the inner end of the dirt-isolating top plate and the outer side wall of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic top view of a pollution isolation device for offshore wind power pile sinking provided by an embodiment of the present invention;

[0026] Figure 2 A schematic cross-sectional view of a pollution isolation device for offshore wind power pile sinking provided by an embodiment of the present invention when installed outside a steel pipe pile.

[0027] Description of reference numerals:

[0028] 1. dirt-isolating cylinder; 101. cylinder body; 102. dirt-isolating top plate; 103. anti-sinking bottom plate;

[0029] 2. Reinforcement parts;

[0030] 3. Flexible buffer;

[0031] 4. Connectors;

[0032] K, steel pipe pile; M, mud surface. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] In the description of the present application, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of the present application, unless otherwise specified, “plurality” means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] The diversified design of offshore wind power infrastructure provides a solid foundation for the rapid development of this field. Specifically, the current offshore wind power foundation types include gravity foundation, jacket foundation, high pile foundation, floating foundation and single pile foundation.

[0039] Among them, jacket foundation and single pile foundation have become the mainstream choice in the industry due to their wide applicability and technical maturity, and most of them are in the form of steel pipe piles.

[0040] In the construction process of offshore wind power pile foundation, hydraulic pile hammer is widely used for pile sinking. However, while this construction process brings high efficiency, it also causes environmental problems that cannot be ignored.

[0041] Specifically, the vibrations generated during the pile sinking process will disturb the seabed sediment, causing it to resuspension, which in turn causes water turbidity, polluting the water quality of local sea areas and potentially having an adverse impact on the natural environment of the seabed sediments.

[0042] In view of the increasingly stringent environmental protection requirements, how to effectively reduce or eliminate the negative impact of pile driving construction on the seabed mud environment while ensuring construction efficiency has become a technical problem that needs to be urgently solved in the current offshore wind power construction field.

[0043] To this end, the present application sets a pollution isolation device on the outside of the steel pipe pile and encloses a pollution isolation space to limit the area where pollutants such as Nisa are emitted due to the disturbance caused by the steel pipe pile sinking process, so as to reduce the pollution of the marine environment caused by the pile sinking construction activities.

[0044] Combine the following Figure 1 and Figure 2 , describing an embodiment of the present invention.

[0045] According to an embodiment of the present invention, in a first aspect, there is provided a pollution isolation device for offshore wind power pile driving, which is used for pile driving construction and comprises a pollution isolation cylinder 1 .

[0046] Specifically, if Figure 2 As shown, the dirt-isolating cylinder 1 includes a cylinder body 101 and a dirt-isolating top plate 102. The cylinder body 101 is sleeved on the outside of the steel pipe pile K, and a gap is left between the inner wall of the cylinder body 101 and the outer wall of the steel pipe pile K. The dirt-isolating top plate 102 is installed on the inner wall of the cylinder body 101, and extends in the direction close to the steel pipe pile K.

[0047] The cylinder body 101 is used to be placed above the mud surface M, the dirt-isolating top plate 102 is located on the side of the cylinder body 101 away from the mud surface M, and the dirt-isolating top plate 102, the cylinder body 101 and the mud surface M enclose a dirt-isolating chamber.

[0048] In this way, by sleeved the cylinder body 101 on the outside of the steel pipe pile K, the cylinder body 101 is placed above the mud surface M, the pollution isolation top plate 102 is set on the side of the cylinder body 101 away from the mud surface M, and the pollution isolation top plate 102 is set between the inner wall of the cylinder body 101 and the outer wall of the steel pipe pile K, so that the pollution isolation top plate 102, the cylinder body 101 and the mud surface M form a pollution isolation chamber, which can effectively isolate and collect pollutants such as mud and sand generated during the pile driving construction process, avoid diffusion, and reduce the pollution of the marine environment caused by the pile driving construction activities.

[0049] At the same time, the design of the dirt-isolating cylinder 1 avoids frequent cleaning during the construction process, thereby improving the construction efficiency and reducing the maintenance cost of pollutant disturbance such as mud and sand caused during the pile sinking construction process.

[0050] It can be explained that, in this embodiment, during the pile sinking process, the bottom end surface of the cylinder body 101 contacts the mud surface M.

[0051] It can be explained that the structural shape of the dirt-isolating top plate 102 is not specifically limited.

[0052] In one embodiment, Figure 1 and Figure 2 As shown, the dirt-isolating top plate 102 is an annular plate structure.

[0053] In this way, by configuring the dirt-isolating top plate 102 as an annular plate-mounted structure, the construction space can be effectively utilized, thereby improving the compactness of the dirt-isolating device.

[0054] At the same time, the annular plate structure can provide more uniform and stable support, so that the pollution isolation top plate 102 is not easily deformed or damaged when subjected to various forces and pressures during the construction process, which helps to maintain the stability and integrity of the pollution isolation device and ensure its normal operation in harsh environments.

[0055] Likewise, the structural shape of the cylinder body 101 is not specifically limited.

[0056] In one embodiment, Figure 1 and Figure 2 As shown, the cylinder body 101 is a cylindrical cylinder.

[0057] By configuring the cylinder body 101 as a cylindrical cylinder, the cylinder body 101 has excellent structural stability and can withstand various forces and pressures during the construction process, such as the impact force of the steel pipe pile K when it sinks, the buoyancy of seawater, and the force exerted on the cylinder body 101 by natural factors such as wind and waves, thereby ensuring that the pollution isolation device can operate stably.

[0058] At the same time, the cylindrical shell has advantages in fluid dynamics, can reduce water flow resistance, can reduce the impact on the surrounding sea environment, help protect the marine ecology and reduce construction noise.

[0059] It should be noted that when the cylinder body 101 is in a cylindrical structure and the dirt-isolating top plate 102 is in an annular structure, a gap is left between the inner wall of the dirt-isolating top plate 102 arranged in the radial direction and the outer wall of the cylinder body 101 arranged in the radial direction to form an installation space.

[0060] That is, in one embodiment, if Figure 1 and Figure 2 As shown, the pollution isolation device for offshore wind power pile sinking further includes a flexible buffer 3 , which is installed at the inner end of the pollution isolation top plate 102 .

[0061] By setting up in this way, a gap is left between the inner wall of the dirt-isolating top plate 102 and the outer wall of the cylinder body 101, and a flexible buffer 3 is arranged in the gap, so that the direct contact between the dirt-isolating top plate 102 and the cylinder body 101 is effectively reduced, thereby reducing the degree of wear caused by friction caused by contact, which can not only extend the service life of the dirt-isolating device, but also reduce the noise and vibration caused by wear.

[0062] At the same time, during the offshore wind power pile construction process, due to factors such as foundation settlement, wind and waves, the pollution isolation device may be deformed to a certain extent. The flexible buffer 3 has a certain elasticity and adaptability, which can absorb these deformations and maintain the stability and integrity of the pollution isolation device.

[0063] It can be explained that, in this embodiment, there is no specific limitation on the selection of the flexible buffer member 3 , and it is only required to reduce the impact between the dirt-isolating top plate 102 and the cylinder body 101 .

[0064] As one of the implementation modes, the flexible buffer member 3 is selected to be a rubber buffer pad. In this case, the rubber buffer pad is an integrally formed structure, or a split structure, and a plurality of arc-shaped buffer pads are circumferentially surrounded by the cylinder body to form an annular structure.

[0065] As another embodiment, the flexible buffer 3 is selected as a soft roller, such as a rubber roller, a polyurethane roller, etc. In this case, the roller base is welded to the inner wall side of the dirt isolation top plate 102, and the roller body is rotatably installed in the roller base. In this case, there are multiple soft rollers, and the multiple soft rollers are arranged around the circumference of the cylinder body, and there is a spacing between two adjacent soft rollers in the circumference of the cylinder body.

[0066] In one embodiment, Figure 2As shown, the dirt-isolating cylinder 1 further includes an anti-sinking bottom plate 103 , which is located on a side of the cylinder body 101 close to the mud surface M, and is installed on the outer side wall of the cylinder body 101 .

[0067] In this way, by installing an anti-sinking bottom plate 103 on the outer side of the end of the cylinder body 101 of the dirt isolation cylinder 1 close to the mud surface M, the dirt isolation cylinder 1 is made more stable on the mud surface M, preventing the cylinder from sinking or tilting due to natural factors such as waves and tides, thereby ensuring the continuous effectiveness and safety of the dirt isolation device during the construction process.

[0068] At the same time, the design of the anti-sinking bottom plate 103 enables the dirt-isolating cylinder 1 to better adapt to different mud and terrain conditions, that is, whether in soft mud, hard mud or sandy seabed, the anti-sinking bottom plate can provide stable support to ensure the normal operation of the dirt-isolating device.

[0069] It can be explained that, in this embodiment, the anti-sinking bottom plate 103 is a circular ring structure.

[0070] In one embodiment, Figure 1 and Figure 2 As shown, the pollution isolation device for offshore wind power pile sinking also includes a plurality of reinforcement members 2, and the plurality of reinforcement members 2 are divided into at least two groups, wherein the two groups of reinforcement members 2 are respectively used to be installed at the connection between the cylinder body 101 and the anti-sinking bottom plate 103 and to be installed at the connection between the cylinder body 101 and the pollution isolation top plate 102.

[0071] In this way, by adding a plurality of reinforcement members 2, the structural strength of the position where the reinforcement members 2 are located can be improved. Specifically, the plurality of reinforcement members 2 are arranged in groups. In the two groups of reinforcement members 2, one group of reinforcement members 2 is used to be installed at the connection between the cylinder body 101 and the anti-sinking bottom plate 103, and the other group of reinforcement members 2 is used to be installed at the connection between the cylinder body 101 and the dirt-isolating top plate 102, so as to improve the structural strength of these connection parts, so that when the dirt-isolating device is subjected to the force during the construction process, the integrity of the dirt-isolating cylinder 1 is ensured, and the failure of the dirt-isolating cylinder 1 due to structural damage is prevented.

[0072] At the same time, the provision of the reinforcement member 2 can reduce fatigue and wear of the connection parts caused by long-term stress, which helps to improve the durability of the pollution isolation device, extend its construction life, and reduce the frequency of replacement and maintenance.

[0073] In addition, since offshore wind power pile construction usually faces complex marine environment and severe climatic conditions, the installation of reinforcement 2 enables the pollution isolation device to better adapt to these challenges and ensure that offshore wind power pile construction can still proceed normally under extreme conditions.

[0074] Preferably, in this embodiment, the reinforcement member 2 is selected as a reinforcing rib to increase the height of the connection.

[0075] In one embodiment, Figure 1 and Figure 2 As shown, the pollution isolation device for offshore wind power pile sinking also includes a connector 4, which is installed on the top of the pollution isolation top plate 102, or the connector 4 is installed on the outer wall of the cylinder body 101.

[0076] In this way, by adding an installation connector 4 on the top of the pollution isolation top plate 102, the pollution isolation device can be conveniently hoisted and transported. Especially in offshore wind power pile construction, the pollution isolation device often needs to be assembled and installed at sea. The setting of the connector 4 can provide a convenient hoisting point, allowing construction personnel to complete the assembly and installation of the pollution isolation device more efficiently.

[0077] At the same time, the connector 4 serves as a lifting point to ensure that the dirt isolation device will not fall off or be damaged when subjected to a force, thereby protecting the safety of construction personnel and equipment.

[0078] Preferably, the connecting member 4 is selected as a lifting ring, and during installation, the lifting ring is welded and installed on the dirt-isolating top plate 102 .

[0079] Furthermore, when the connecting member 4 is selected as a lifting ring, a rope is used, and a hook is installed at the end of the rope, so as to facilitate the lifting of the dirt isolation device using the rope and the hook.

[0080] It can be explained that, in the present embodiment, a detection device, such as a camera device, can be additionally installed on the dirt isolation top plate 102 to monitor the working status of the dirt isolation device in real time, and form an electrical signal to be transmitted to the control terminal, so that the operation and maintenance personnel can check the status of the dirt isolation device; of course, a cleaning device can also be installed on the dirt isolation top plate 102, and a telescopic end, such as a telescopic sleeve, can be used to extend the cleaning end, such as a cleaning port, to the outer surface of the dirt isolation cylinder 1. At this time, the cleaning port is connected to the telescopic sleeve, and a negative pressure device, such as a pump body, is used to regularly clean and maintain the surface of the dirt isolation cylinder 1.

[0081] According to an embodiment of the present invention, on the other hand, the present invention further provides a construction method for offshore wind power pile sinking, which is applied to the pollution isolation device for offshore wind power pile sinking provided in the first aspect.

[0082] Specifically, the construction method for offshore wind power pile sinking includes: S1: prefabricating a pollution isolation device; S2: hoisting the steel pipe pile K, and using the deadweight of the steel pipe pile K for preliminary pile sinking; S3: hoisting the pollution isolation device, putting the pollution isolation device on the outside of the steel pipe pile K, and lowering the pollution isolation device to the mud surface M; S4: using a pile driving device to complete the pile sinking of the steel pipe pile K.

[0083] With such arrangement, since the construction method for offshore wind power pile driving is applied to the pollution isolation device for offshore wind power pile driving of the first aspect, it has the same effect as the pollution isolation device for offshore wind power pile driving, and will not be described in detail here.

[0084] It can be explained that, in this embodiment, when the dirt isolation device is prefabricated, the dirt isolation top plate 102 is welded to the inner wall of the top of the cylinder body 101 , and the anti-sinking bottom plate 103 is welded to the outer wall of the bottom of the cylinder body 101 .

[0085] In one embodiment, step S1 includes: S101: the dirt-isolating top plate 102 and the anti-sinking bottom plate 103 are installed on the cylinder body 101; S102: two sets of reinforcement members 2 are respectively installed at the connection between the cylinder body 101 and the anti-sinking bottom plate 103 and at the connection between the cylinder body 101 and the dirt-isolating top plate 102.

[0086] In one embodiment, step S1 further includes: S103: installing the flexible buffer member 3 between the inner end of the dirt-isolating top plate 102 and the outer wall of the cylinder body 101 along the radial direction.

[0087] Preferably, the radial direction mentioned in this embodiment is defined as Figure 1 Horizontal direction shown.

[0088] In one embodiment, when performing step S3, the pollution isolation device is suspended below the dragon mouth of the positioning frame used for pile sinking by using ropes and hooks, and the pollution isolation device is lowered and lifted.

[0089] It can be explained that, in the above embodiment, the order of step S2 and step S3 is not specifically limited. Step S2 can be performed before step S3 or after step S3.

[0090] Preferably, step S2 is performed before step S3.

[0091] That is, when the steel pipe pile K is hoisted, it is continuously lowered until it is inserted into the mud surface M by its own weight. Then, the pollution isolation device is sleeved outside the steel pipe pile K and lowered along the axial direction of the steel pipe pile K until the pollution isolation device is lowered above the mud surface M.

[0092] Further, the axis direction mentioned in this embodiment is defined as Figure 1 Vertical direction shown.

[0093] In one embodiment, when performing step S4, the piling device is preferably a piling hammer.

[0094] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A pollution isolation device for offshore wind power pile sinking, used for pile sinking construction, characterized in that: include: A dirt-isolating cylinder (1), the dirt-isolating cylinder (1) comprising a cylinder body (101) and a dirt-isolating top plate (102), the cylinder body (101) being sleeved on the outside of a steel pipe pile (K), and a gap being left between the inner wall of the cylinder body (101) and the outer wall of the steel pipe pile (K), the dirt-isolating top plate (102) being installed on the inner wall of the cylinder body (101), and the dirt-isolating top plate (102) extending in a direction close to the steel pipe pile (K); The cylinder body (101) is used to be placed above the mud surface (M), the dirt-isolating top plate (102) is located on the side of the cylinder body (101) away from the mud surface (M), and the dirt-isolating top plate (102), the cylinder body (101) and the mud surface (M) enclose a dirt-isolating chamber.

2. The pollution isolation device for offshore wind power pile sinking according to claim 1 is characterized in that: The dirt-isolating cylinder (1) further comprises: An anti-sinking bottom plate (103), the anti-sinking bottom plate (103) is located on a side of the cylinder body (101) close to the mud surface (M), and the anti-sinking bottom plate (103) is installed on the outer side wall of the cylinder body (101).

3. The pollution isolation device for offshore wind power pile sinking according to claim 2 is characterized in that: Also includes: A plurality of reinforcing members (2), wherein the plurality of reinforcing members (2) are arranged in at least two groups, wherein the two groups of reinforcing members (2) are respectively used to be installed at the connection between the cylinder body (101) and the anti-sinking bottom plate (103) and to be installed at the connection between the cylinder body (101) and the dirt-isolating top plate (102).

4. The pollution isolation device for offshore wind power pile sinking according to any one of claims 1 to 3, characterized in that: A gap is left between the inner wall of the dirt-isolating top plate (102) and the outer wall of the cylinder body (101); The pollution isolation device for offshore wind power pile sinking also includes: A flexible buffer (3), wherein the flexible buffer (3) is installed at the inner end of the dirt-isolating top plate (102).

5. The pollution isolation device for offshore wind power pile sinking according to any one of claims 1 to 3, characterized in that: Also includes: A connecting piece (4), wherein the connecting piece (4) is installed on the top of the dirt-isolating top plate (102), or the connecting piece (4) is installed on the outer side wall of the cylinder body (101).

6. The pollution isolation device for offshore wind power pile sinking according to any one of claims 1 to 3, characterized in that: The dirt-isolating top plate (102) is an annular plate structure.

7. The pollution isolation device for offshore wind power pile sinking according to any one of claims 1 to 3, characterized in that: The cylinder body (101) is a cylindrical cylinder.

8. A construction method for offshore wind power pile sinking, applied to the pollution isolation device for offshore wind power pile sinking according to any one of claims 1 to 7, characterized in that: Construction methods include: S1: Prefabricated pollution isolation device; S2: hoisting the steel pipe pile (K) and using the deadweight of the steel pipe pile (K) for preliminary pile sinking; S3: hoist the pollution isolation device, put it on the steel pipe pile (K), and lower it to the mud surface (M); S4: Use a pile driving device to complete the sinking of the steel pipe pile (K).

9. The construction method for offshore wind power pile sinking according to claim 8, characterized in that: Step S1 includes: S101: The dirt-isolating top plate (102) and the anti-sinking bottom plate (103) are installed on the cylinder body (101); S102: Two sets of reinforcement members (2) are respectively installed at the connection between the cylinder body (101) and the anti-sinking bottom plate (103) and at the connection between the cylinder body (101) and the dirt-isolating top plate (102).

10. The construction method for offshore wind power pile sinking according to claim 9, characterized in that: Step S1 also includes: S103: Install the flexible buffer (3) along the radial direction between the inner end of the dirt-isolating top plate (102) and the outer wall of the cylinder body (101).

Images