Offshore wind power compartment type suction tubular pile structure

Abstract

An offshore wind power compartment type suction barrel pile structure comprises a suction barrel, a single pile is fixedly connected to the suction barrel, a center pipe is fixedly connected to the center of the suction barrel, a plurality of partition plates are fixedly connected to the interior of an annular cavity between the center pipe and the suction barrel, the annular cavity is divided into a plurality of fan-shaped cavities through the partition plates, and grouting pipes communicate with the center pipe and the fan-shaped cavities. And a valve is arranged on each grouting pipe. The utility model is used for solving the problems of deflection and troublesome correction caused by overlarge suction force in the fixing process of the suction cylinder.

Description

Technical Field

[0001] The utility model relates to an offshore wind power compartment type suction cylinder pile structure. Background Art

[0002] Offshore wind turbine suction piles are the key to supporting the entire offshore wind turbine, accounting for approximately 20% to 25% of the total offshore wind turbine investment. Currently, suction pile construction involves placing the suction barrel vertically on the seabed. Using the suction barrel and the weight of the foundation to sink to a certain depth, the drainage pipe is sealed to ensure a sealed space. A submersible pump continuously pumps water outward to reduce the pressure on the suction barrel pile. This pressure differential allows the suction barrel pile to continue sinking into the seabed until the inner cover of the suction barrel contacts the seabed. However, during the suction barrel fixing process, excessive suction can cause the pile to deflect, making correction difficult. Utility Model Content

[0003] The purpose of the utility model is to provide an offshore wind power compartmented suction cylinder pile structure, which is used to solve the problem that during the fixing process of the suction cylinder, deflection occurs due to excessive suction force, which is difficult to correct.

[0004] In order to solve the above problems, the technical solution of the utility model is:

[0005] An offshore wind power compartmented suction cylinder pile structure includes a suction cylinder, a single pile is fixedly connected to the suction cylinder, the center of the suction cylinder is fixedly connected to a central pipe, a plurality of partitions are fixedly connected in the annular cavity between the central pipe and the suction cylinder, the annular cavity is divided into a plurality of fan-shaped cavities by the partitions, a grouting pipe is connected to the central pipe and each fan-shaped cavity, and a valve is installed on each grouting pipe.

[0006] A plurality of conduits are fixedly connected to the circumferential surface of the suction cylinder, and a plurality of discharge holes are opened on the conduits.

[0007] The guide tube is inclined to the axis of the suction cylinder.

[0008] A suction cylinder is exposed at the upper end of the catheter.

[0009] At least six partitions are fixedly connected in the annular cavity between the central tube and the suction cylinder.

[0010] The beneficial effects of the utility model are as follows: the suction cylinder is inserted into the specified elevation by utilizing the overall deadweight sinking of the suction cylinder pile and the negative pressure sinking of the suction cylinder; at the same time, during the sinking period, the inclination of the suction cylinder is monitored, and the suction pumps of each fan-shaped cavity are controlled separately to level the suction cylinder to prevent the suction cylinder from tilting; in addition, the adhesive discharged from the conduit is used to anchor the sea sand and silt around the suction cylinder, so that the suction cylinder can be more firmly placed on the seabed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] In the figure: suction cylinder 1, grouting pipe 2, valve 3, single pile 4, guide tube 5, discharge hole 6, central pipe 7, fan-shaped cavity 8, central cavity 9, partition 10. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] A sub-compartment suction cylinder pile structure for offshore wind power comprises a suction cylinder 1, a single pile 4 is fixedly connected to the suction cylinder 1, a central pipe 7 is fixedly connected to the center of the suction cylinder 1, a plurality of partitions 10 are fixedly connected in the annular cavity between the central pipe 7 and the suction cylinder 1, the annular cavity is divided into a plurality of fan-shaped cavities 8 by the partitions 10, the central pipe 7 and the suction cylinder 1 enclose a central cavity 9, a grouting pipe 2 is connected to the central cavity 9 and each fan-shaped cavity 8, a valve 3 is installed on each grouting, two suction pumps are prepared, one of which is connected to the grouting pipe 2 on the central cavity 9, and the other is connected to the grouting pipe 2 on each fan-shaped cavity 8 through a plurality of hoses.

[0017] The implementation process of the present invention is as follows: after the crane ship lowers the suction cylinder 1 pile to the seabed, the suction cylinder 1 pile contacts the seabed mud surface and slowly sinks, and the suction cylinder 1 pile enters the mud by its own weight, and then uses multiple hoses to connect the central cavity 9 and each fan-shaped cavity 8 with two suction pumps (the suction pump and the hose are not drawn in the figure), and the two suction pumps synchronously pump out seawater, and the pressure in the central cavity 9 and each fan-shaped cavity 8 is reduced. Under the action of the internal and external pressure difference, the suction cylinder 1 sinks to a preset depth; during the sinking process of the suction cylinder 1, if the suction cylinder 1 deviates, the valve 3 in the deflection direction is closed, so that the water in the fan-shaped cavity 8 in the tilted direction cannot be pumped out. It is only necessary to pump out the seawater in the fan-shaped cavity 8 opposite to the tilt direction to increase the negative pressure, so that the suction cylinder 1 can gradually correct its deviation.

[0018] Multiple conduits 5 are fixedly connected to the circumference of the suction cylinder 1, each of which is provided with a plurality of discharge holes 6. After the suction cylinder 1 is lowered to a predetermined depth, the conduits 5 are connected to a slurry pump on board the vessel via a flexible hose. The slurry pump then pumps out reinforcement slurry, which is then discharged from the discharge holes 6 on the conduits 5. The reinforcement slurry is then mixed with the sediment. Once the reinforcement slurry solidifies, the sediment adhered to the suction cylinder 1 forms a strong anchoring layer around the suction cylinder 1, thereby greatly improving the pullout resistance and stability of the suction cylinder 1.

[0019] The guide tube 5 is inclined to the axis of the suction cylinder 1. During the sinking process of the suction cylinder 1, under the guidance of the guide tube 5, the suction cylinder 1 will slowly rotate and sink, thereby allowing the partition 10 to scrape the mud and sand flat, avoiding soil plugging in the sector cavity 8.

[0020] The upper end of the conduit 5 is exposed from the suction cylinder 1. The upper end of the conduit 5 exposed from the suction cylinder 1 can "break up" the tidal current, partially changing the flow rate and direction of the tidal current, so that the energy of the tidal current can be dissipated to a certain extent, achieving the purpose of active scour prevention, suppressing the formation of a horseshoe-shaped vortex near the suction cylinder 1, effectively protecting the soil around the suction cylinder 1, and avoiding the formation of scour pits.

[0021] At least six partitions 10 are fixedly connected in the annular cavity between the central tube 7 and the suction cylinder 1 .

[0022] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. An offshore wind power compartmented suction cylinder pile structure, comprising a suction cylinder (1), a single pile (4) fixedly connected to the suction cylinder (1), characterized in that: The center of the suction cylinder (1) is fixedly connected to the center pipe (7), and a plurality of partitions (10) are fixedly connected in the annular cavity between the center pipe (7) and the suction cylinder (1). The partitions (10) divide the annular cavity into a plurality of fan-shaped cavities (8). The center pipe (7) and the suction cylinder (1) enclose a center cavity (9). Grouting pipes (2) are connected to the center cavity (9) and each fan-shaped cavity (8), and valves (3) are installed on each grouting pipe.

2. The offshore wind power compartmented suction pile structure according to claim 1, characterized in that: A plurality of conduits (5) are fixedly connected to the circumferential surface of the suction cylinder (1), and a plurality of discharge holes (6) are provided on the conduits (5).

3. The offshore wind power compartmented suction pile structure according to claim 2, characterized in that: The conduit (5) is inclined to the axis of the suction cylinder (1).

4. The offshore wind power compartmented suction pile structure according to claim 2, characterized in that: The upper end of the conduit (5) is exposed from the suction cylinder (1).

5. The offshore wind power compartmented suction pile structure according to any one of claims 1 to 4, characterized in that: At least six partition plates (10) are fixedly connected in the annular cavity between the central tube (7) and the suction cylinder (1).

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