Temporary pile shoe of suction barrel for deep and far sea wind power

Abstract

The utility model discloses a suction tube temporary pile shoe for deep and far sea wind power, which comprises a top platform with a groove in the center, four lifting lugs are uniformly distributed at the top of the top platform along the circumferential direction, and a gravel layer is laid in the groove of the top platform; a suction cylinder group is arranged at the bottom of the top platform, and N pump skid bodies are movably arranged on the gravel layer of the top platform and are respectively matched with four suction cylinders in the suction cylinder group so as to drive the four suction cylinders to sink to a parking state or float upwards to be in a movable state; the structure meets the parking requirement of the platform ship and can be selectively moved to a designated machine position along with the workboat, and repeated parking is achieved. Compared with an existing platform ship parking mode, according to the two wind power operation methods correspondingly achieved through the structure, pile legs of the platform ship do not need to be inserted into mud any more, the requirement for a platform ship lifting system is lowered, the problem that the construction efficiency is low due to pile washing and ballast water adjusting is solved, and the offshore wind power construction efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of deep-sea wind power construction equipment, and in particular to a suction cylinder temporary pile shoe for deep-sea wind power. Background Technology

[0002] In deep-sea offshore wind power construction, the positioning of wind turbine installation platforms faces numerous challenges: 1) High equipment requirements: Deep-sea wind turbine installation operations are conducted in water depths exceeding 70 meters. When the platform vessel is positioned, the pile legs are deeply embedded in the mud. The installation and removal of piles places high demands on the platform vessel's lifting system, requiring significant power and torque, thus increasing vessel construction costs; 2) Low construction efficiency: When the platform vessel's pile legs are deeply embedded in the mud, a flushing system is needed for installation and removal. This flushing system removes the silt around the pile legs to reduce friction, but the long flushing time leads to low construction efficiency. Furthermore, the installation and removal process requires adjusting the ballast water on the platform vessel to achieve the required mud embedment, which also takes considerable time. Therefore, based on the aforementioned existing technical problems, it is necessary to design a suction cylinder temporary pile shoe structure for deep-sea applications. Utility Model Content

[0003] The purpose of this invention is to provide a suction cylinder temporary pile shoe for deep-sea wind power that solves the above-mentioned technical problems.

[0004] Therefore, the technical solution of this utility model is as follows:

[0005] A temporary suction cylinder pile shoe for deep-sea wind power includes a top platform and a suction cylinder assembly arranged sequentially from top to bottom. The top platform is a platform with a central groove, and four lifting lugs are evenly distributed around its top. A layer of crushed stone is laid in the groove of the top platform. The suction cylinder assembly includes N suction cylinders, which are evenly distributed around the top of the top platform and fixed to the bottom. The delivery pipes at the top of the N suction cylinders extend from the pipe openings on the bottom surface of the top platform, and each delivery pipe is connected to an extension pipe, the other end of which extends above the crushed stone layer. N pump skids are also movably installed on the crushed stone layer of the top platform, which cooperate with the four suction cylinders in the suction cylinder assembly to drive the four suction cylinders to sink to a stationary state or float to a movable state.

[0006] Furthermore, in the aforementioned suction cylinder temporary pile shoe structure for deep-sea applications, N is a positive integer and N≥3; in practical applications, the value of N is specifically adjusted according to the size of the top platform.

[0007] Furthermore, the depth of the groove in the center of the top platform is 4m to 5m.

[0008] Furthermore, the top platform includes a horizontally arranged platform plate, on which two first upright plates are vertically fixed at one set of opposite edges on the top surface, and two second upright plates are vertically fixed at another set of opposite edges on the top surface. Adjacent first and second upright plates are vertically connected and fixed together. Two horizontal plates are symmetrically fixed on both sides of the top surface of the two first upright plates, and both are simultaneously connected and fixed to the top side edges of the two second upright plates, so as to provide a top platform on the top of the four upright plates that can be used to install four lifting lugs.

[0009] Furthermore, inverted trapezoidal notches are provided at the center of the top sides of the two first upright plates, and the width of the inverted trapezoidal notches is adapted to the width of the barge, so that the top side of the top platform forms an insert groove.

[0010] Furthermore, the thickness of the crushed stone layer is 2.5m to 3.5m, and it is formed by the accumulation of crushed stone or flexible crushed material with a diameter of 10mm to 50mm; the flexible crushed material can be, but is not limited to, rubber blocks, water-resistant wood blocks, etc.

[0011] Furthermore, each pump skid includes a submersible pump, an air compressor, and a generator housed within a casing; wherein the generator is electrically connected to both the submersible pump and the air compressor.

[0012] Furthermore, the pump skid also includes a PLC controller; the water inlet of the submersible pump is connected to the other end of the extension pipe via a first delivery pipe, and the water inlet of the submersible pump is also connected to the sea via a second delivery pipe; the water outlet of the submersible pump is connected to the other end of the extension pipe via a third delivery pipe, and the water outlet of the submersible pump is also connected to the sea via a fourth delivery pipe; the air outlet of the air compressor is connected to the other end of the extension pipe via a fifth delivery pipe; a first electrically controlled valve is provided on the first delivery pipe, a second electrically controlled valve is provided on the second delivery pipe, a third electrically controlled valve is provided on the third delivery pipe, a fourth electrically controlled valve is provided on the fourth delivery pipe, and a fifth electrically controlled valve is provided on the fifth delivery pipe; each electrically controlled valve is electrically connected to the PLC controller.

[0013] Furthermore, each pump skid has two lifting lugs symmetrically arranged on the outer side of its housing.

[0014] Compared with existing technologies, the suction cylinder temporary pile shoe for deep-sea wind power has a simple and reasonable structure, is easy to use, meets the positioning needs of the platform vessel, and can be selectively moved to the designated turbine position with the working vessel to achieve repeated positioning. Compared with the existing positioning operations of wind power construction platform vessels, the use of the suction cylinder temporary pile shoe for deep-sea wind power to achieve positioning operations eliminates the need to insert the platform vessel's pile legs into the mud. This not only reduces the requirements for the platform vessel's lifting system, but also avoids the problems of low construction efficiency caused by pile driving and ballast water adjustment, effectively improving the efficiency and quality of offshore wind power construction. Attached Figure Description

[0015] Figure 1This is a top view of a suction cylinder temporary pile shoe used for deep-sea wind power in an embodiment of this utility model;

[0016] Figure 2 This is a side view of a suction cylinder temporary pile shoe used for deep-sea wind power in an embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the top platform of the suction cylinder temporary pile shoe used for deep-sea wind power in an embodiment of this utility model;

[0018] Figure 4 This is a front view of an embodiment of the present invention, which uses a suction cylinder temporary pile shoe for deep-sea wind power to achieve barge positioning.

[0019] Figure 5 This is a top view of a barge mooring system using suction cylinder temporary pile shoes for deep-sea wind power in an embodiment of this utility model.

[0020] Figure 6 This is a front view of an embodiment of the present invention, which uses a suction cylinder temporary pile shoe for deep-sea wind power to achieve platform vessel positioning.

[0021] Figure 7 This is a top view of a platform vessel being positioned using a suction cylinder temporary pile shoe for deep-sea wind power in an embodiment of this utility model. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0023] Example 1

[0024] See Figure 1 and Figure 2 The suction cylinder temporary pile shoe for deep-sea wind power includes a top platform 1 and a suction cylinder assembly 2 arranged sequentially from top to bottom.

[0025] The top platform 1 is a platform with a central groove. The groove is 5m deep and its diameter is larger than the outer diameter of the pile leg 6. This groove is used to position and connect the structure to the pile leg 6 on the bottom of the platform vessel through the fit between the pile leg 6 and the groove. Four lifting lugs 105 are evenly distributed around the top of the top platform 1. The lifting lugs 105 are made of high-strength alloy steel, which has good strength and toughness to withstand huge tensile forces. In actual offshore wind farm operations, the top platform 1 is reliably connected to the crane on the work vessel through the lifting lugs 105, so that the temporary suction cylinder pile shoe, which is currently floating, can be moved to the next machine position with the work vessel.

[0026] In this embodiment, see Figure 3The top platform 1 includes a horizontally arranged square platform plate 101. Two first upright plates 102 are vertically fixed at one set of opposite edges on the top surface of the platform, and two second upright plates 103 are vertically fixed at another set of opposite edges on the top surface of the platform. Adjacent first upright plates 102 and second upright plates 103 are vertically connected and fixed, so that the top platform 1 forms a structure with a groove. The first upright plates 102 and second upright plates 103 are both made of the same rectangular plate, and two horizontal plates 104 are symmetrically fixed on both sides of the top surface of the two first upright plates 102. The two horizontal plates 104 are connected and fixed to the top side edges of the two second upright plates 103, so that a top platform for installing four lifting lugs 105 can be set on the top of the four upright plates, which also has the function of strengthening the structural strength of the top platform 1. The top platform 1 is a steel frame structure and meets the load-bearing requirements when the auxiliary work vessel is stationed.

[0027] As a preferred technical solution in this embodiment, since the barge does not have pile legs 6, in order to achieve the positioning connection between the structure and the barge, the top sides of the two first upright plates 102 are respectively provided with inverted trapezoidal notches 1021 in the center, and the width of the inverted trapezoidal notches 1021 is adapted to the width of the barge, so that the top side of the top platform 1 forms an embedding groove; when the suction cylinder temporary pile shoe is used in conjunction with the barge, the bottom of the barge can be embedded and fitted with the top platform 1.

[0028] A layer of crushed stone 3 is laid in the groove of the top platform 1. The layer of crushed stone 3 is 3m thick and is formed by the accumulation of crushed stone with a diameter of 10mm to 50mm. The crushed stone layer 3 is used to insert the pile legs 6 at the bottom of the hull to stabilize the connection stability between the pile legs 6 and the top platform 1. It also has a buffering effect to disperse the load transmitted by the superstructure, reduce local stress concentration, and reduce the impact force generated when the pile legs 6 are connected to the temporary pile shoe of the suction cylinder.

[0029] The suction cylinder assembly 2 includes four suction cylinders 201, which are evenly distributed around the circumference and fixed to the bottom of the top platform 1; the regularly distributed four suction cylinders 201 can ensure that the entire structure is subjected to uniform force; each pair of adjacent suction cylinders 201 are welded and fixedly connected by a connecting plate 202 to form a stable whole.

[0030] Four pipe penetrations are evenly distributed along the circumference on the bottom surface of the top platform 1, so that the conveying pipes at the top of the four suction cylinders 201 can pass through the four pipe penetrations respectively; an extension pipe 5 is connected to the end of each conveying pipe, and the extension pipe 5 is 3.5m long, so that after the top platform 1 is filled with the crushed stone layer 3, the other end of the extension pipe 5 can extend above the crushed stone layer 3.

[0031] Four pump skids 4 are also installed on the gravel layer 3 of the top platform 1. They cooperate with the four suction cylinders 201 in the suction cylinder group 2 to drive the four suction cylinders 201 to sink to the stationary state or float to the movable state. The four pump skids 4 are movably installed on the gravel layer 3 so that they can be easily removed when connected to the hull.

[0032] Each pump skid 4 includes a submersible pump, an air compressor, and a small generator housed within a casing; wherein the small generator is electrically connected to the submersible pump and the air compressor respectively for power supply; during actual operation, the extension pipe 5 is connected to the corresponding port of the submersible pump or the air compressor as needed.

[0033] The actual working principle of the pump skid 4 is as follows: When the suction cylinder 201 needs to lower the top platform 1 and insert it into the mud surface, the extension pipe 5 is directly connected to the atmosphere. The suction cylinder 201 first relies on its own weight to gradually lower the top platform 1 to the seabed until it reaches a stable state; then, the inlet end of the submersible pump is connected to the extension pipe 5, and the outlet end of the submersible pump enters the sea through the pipeline. The submersible pump is started, and the submersible pump draws water from the suction cylinder 201 and discharges it into the sea, causing the suction cylinder 201 to continue to sink under negative pressure until it sinks to the designated depth; at this time, the temporary pile shoe of the suction cylinder is in place; when the suction cylinder When the top platform 1 needs to be moved upwards, the extension pipe 5 is connected to the outlet of the submersible pump, and the inlet of the submersible pump enters the sea through the pipeline. The submersible pump is started, and seawater is injected into the suction cylinder 201, causing the suction cylinder 201 to move the top platform 1 to a certain height. Then, the extension pipe 5 is connected to the outlet of the air compressor, and the air compressor is started, and air is injected into the suction cylinder 201, causing the suction cylinder 201 to continue to move the top platform 1 upwards and expose it to the water surface. At this time, the temporary pile shoe of the suction cylinder is in a floating state, so that it can move synchronously with the passing work vessel or be disassembled.

[0034] As a preferred technical solution in this embodiment, the pump skid 4 also includes a PLC controller; the water inlet of the submersible pump is connected to the other end of the extension pipe 5 through a first delivery pipe, and the water inlet of the submersible pump is also connected to the sea through a second delivery pipe; the water outlet of the submersible pump is connected to the other end of the extension pipe 5 through a third delivery pipe, and the water outlet of the submersible pump is also connected to the sea through a fourth delivery pipe; the air outlet of the air compressor is connected to the other end of the extension pipe 5 through a fifth delivery pipe; a first electrically controlled valve is provided on the first delivery pipe, a second electrically controlled valve is provided on the second delivery pipe, a third electrically controlled valve is provided on the third delivery pipe, a fourth electrically controlled valve is provided on the fourth delivery pipe, and a fifth electrically controlled valve is provided on the fifth delivery pipe; each electrically controlled valve is electrically connected to the PLC controller so that the sinking and floating of each suction cylinder 201 is controlled by the PLC controller according to the actual operation.

[0035] As a preferred technical solution in this embodiment, in order to facilitate transfer, two lifting lugs are symmetrically provided on the outer side of the box of each pump skid 4, so as to facilitate connection with the crane on the work vessel and facilitate lifting.

[0036] Example 2

[0037] See Figure 6 and Figure 7 The wind power operation construction method using the suction cylinder temporary pile shoe of Example 1 has the following steps:

[0038] S1. In accordance with the requirement that each of the two ends of the bottom side of the platform vessel 10 is equipped with two suction cylinder temporary pile shoes 8, the transport vessel transports four suction cylinder temporary pile shoes 8 and their connecting beams 11 to the designated machine position, and the crane vessel lifts the four suction cylinder temporary pile shoes 8 to the designated sinking point to adapt to the stationing position of the platform vessel 10.

[0039] S2. Two connecting beams 11 are hingedly connected between two temporary suction cylinder pile shoes 8 at the same end of the corresponding platform vessel 10, spaced apart along the width direction of the platform vessel 10. Two connecting beams 11 are also hingedly connected between two temporary suction cylinder pile shoes 8 on the same side of the corresponding platform vessel 10, spaced apart along the length direction of the platform vessel 10. Each connecting beam 11 has a truss structure, and its two ends are respectively hinged to the walls of two oppositely arranged suction cylinders. Then, the transport ship and the crane ship leave the site.

[0040] S3. The four suction cylinder temporary pile shoes 8 use the pump skids on them to drive the suction cylinder group to sink to the designated depth position, and then use divers or underwater robots to retrieve the pump skids on each suction cylinder temporary pile shoe 8 back to the ship.

[0041] S4. The platform vessel 10 enters the site and sails to the top of the four suction cylinder temporary pile shoes 8. Using its own positioning system, it lowers the four pile legs 6 to be inserted into the gravel layer of the four suction cylinder temporary pile shoe structures 8 respectively. After the platform vessel 10 is stable, wind power operation can be carried out at this location.

[0042] S5. After the platform vessel 10 completes the work at the machine position, divers or underwater robots will be used to transport the pump skid to the top platform of each suction cylinder temporary pile shoe 8, so that multiple pump skids can be used to make the suction cylinder group float to a movable state.

[0043] S6. Eight winches 12 are installed on both sides of the platform vessel 10, corresponding to the positions of the four suction cylinder temporary pile shoes 8. The eight winches 12 lower steel wire ropes and connect them to two lifting lugs on one side of the ship's side on the four suction cylinder temporary pile shoes 8, so that the platform vessel 10 and the four suction cylinder temporary pile shoes are connected as one unit. The platform vessel 10 is used to synchronously move the four suction cylinder temporary pile shoes 8 to the next construction position, and disconnect the connection between the eight winches 12 and the lifting lugs on the four suction cylinder temporary pile shoes 8.

[0044] S7. Repeat steps S3 to S6 above. The platform vessel 10 completes the wind power installation work at all construction sites by repeatedly positioning and moving.

[0045] S8. After the wind power installation work at the last construction site is completed, the platform vessel 10 leaves the site and removes the connecting beams between the temporary suction cylinder pile shoes 8; the transport vessel and the crane vessel enter the site, and the crane vessel lifts the four temporary suction cylinder pile shoes 8 onto the transport vessel for transport back to the dock.

[0046] Example 3

[0047] See Figures 3-7 If the power of the platform vessel 10 is insufficient to simultaneously drive the four suction cylinder temporary pile shoes 8, then another wind power construction method needs to be adopted, and the steps are as follows:

[0048] S1. In accordance with the requirement that each of the two ends of the bottom side of the platform vessel 10 is equipped with two suction cylinder temporary pile shoes 8, the transport vessel transports four suction cylinder temporary pile shoes 8 and their connecting beams 11 to the designated machine position, and the crane vessel lifts the four suction cylinder temporary pile shoes 8 to the designated sinking point to adapt to the stationing position of the platform vessel 10.

[0049] S2. Two connecting beams 11 are hingedly connected between two temporary suction cylinder pile shoes 8 at the same end of the corresponding platform vessel 10, spaced apart along the width direction of the platform vessel 10. Two connecting beams 11 are also hingedly connected between two temporary suction cylinder pile shoes 8 on the same side of the corresponding platform vessel 10, spaced apart along the length direction of the platform vessel 10. Each connecting beam 11 has a truss structure, and its two ends are respectively hinged to the walls of two oppositely arranged suction cylinders. Then, the transport ship and the crane ship leave the site.

[0050] S3. The four suction cylinder temporary pile shoes 8 use the pump skids on them to drive the suction cylinder group to sink to the designated depth position, and then use divers or underwater robots to retrieve the pump skids on each suction cylinder temporary pile shoe 8 back to the ship.

[0051] S4. The platform vessel 10 enters the site and sails to the top of the four suction cylinder temporary pile shoes 8. Using its own positioning system, it lowers the four pile legs 6 to be inserted into the gravel layer of the four suction cylinder temporary pile shoe structures 8 respectively. After the platform vessel 10 is stable, wind power operation can be carried out at this location.

[0052] S5. After the platform vessel 10 completes its work at the pumping station, it leaves the site. The barge 7 enters the site and sails to directly above the two temporary suction cylinder pile shoes 8 on either side of the platform vessel 10. Then, using divers or underwater robots, the pump skids are transported to the top platform of each temporary suction cylinder pile shoe 8, so that the suction cylinder assembly can be floated to a movable state using multiple pump skids. At this time, the bottom of the barge is embedded in the mounting slots set on the top platform of the two temporary suction cylinder pile shoes 8.

[0053] S6. The hooks of the eight mast cranes 9 on barge 7 are lowered, so that the hooks of each mast crane are connected to the eight lifting lugs on the two suction cylinder temporary pile shoes 8 through steel wire ropes, so as to connect barge 7 and the two suction cylinder temporary pile shoes 8 into one unit; by using barge 7 to move the two suction cylinder temporary pile shoes 8 one at a time, the four suction cylinder temporary pile shoes 8 are moved to the next construction position in two stages;

[0054] S7. Repeat steps S3 to S6 above. With the cooperation of barge 7, platform vessel 10 completes the wind power installation work at all construction sites by repeatedly positioning and shifting.

[0055] S8. After the wind power installation work at the last construction site is completed, the platform vessel 10 leaves the site and removes the connecting beams between the temporary suction cylinder pile shoes 8; the transport vessel and the crane vessel enter the site, and the crane vessel lifts the four temporary suction cylinder pile shoes 8 onto the transport vessel for transport back to the dock.

Claims

1. A suction cylinder temporary pile shoe for deep-sea wind power, characterized in that, The system includes a top platform (1) and a suction cylinder assembly (2) arranged sequentially from top to bottom; the top platform (1) is a platform with a central groove, and four lifting lugs (105) are evenly distributed around its top; a layer of crushed stone (3) is laid in the groove of the top platform (1); the suction cylinder assembly (2) includes N suction cylinders (201), which are evenly distributed around the top platform (1) and fixed to the bottom; the top of the N suction cylinders (201) has a conveying pipe. Pipes are installed through openings on the bottom surface of the top platform (1), and each delivery pipe is connected to an extension pipe (5). The other end of the extension pipe (5) extends above the gravel layer (3). N pump skids (4) are also installed on the gravel layer (3) of the top platform (1), which cooperate with the four suction cylinders (201) in the suction cylinder group (2) to drive the four suction cylinders (201) to sink to the stationary state or float to the movable state.

2. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 1, characterized in that, The groove depth at the center of the top platform (1) is 4m to 5m.

3. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 1, characterized in that, The top platform (1) includes a horizontally arranged platform plate (101), on which two first upright plates (102) are vertically fixed at one set of opposite edges on the top surface, and two second upright plates (103) are vertically fixed at another set of opposite edges on the top surface. The adjacent first upright plates (102) and second upright plates (103) are vertically connected and fixed. Two horizontal plates (104) are symmetrically fixed on both sides of the top surface of the two first upright plates (102), and both are simultaneously connected and fixed to the top side edges of the two second upright plates (103) so as to set a top platform on the top of the four upright plates that can be used to install four lifting lugs (105).

4. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 3, characterized in that, An inverted trapezoidal notch (1021) is provided in the center of the top side of each of the two first upright plates (102), and the width of the inverted trapezoidal notch (1021) is adapted to the width of the barge, so that the top side of the top platform (1) has an insert groove.

5. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 1, characterized in that, The thickness of the crushed stone layer (3) is 2.5m to 3.5m, and it is formed by the accumulation of crushed stone or flexible crushed material with a diameter of 10mm to 50mm.

6. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 1, characterized in that, Each pump skid (4) includes a submersible pump, an air compressor, and a generator housed in a housing; wherein the generator is electrically connected to the submersible pump and the air compressor, respectively.

7. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 6, characterized in that, The pump skid (4) also includes a PLC controller; the water inlet of the submersible pump is connected to the other end of the extension pipe (5) through the first delivery pipe, and the water inlet of the submersible pump is also connected to the sea through the second delivery pipe; the water outlet of the submersible pump is connected to the other end of the extension pipe (5) through the third delivery pipe, and the water outlet of the submersible pump is also connected to the sea through the fourth delivery pipe; the air outlet of the air compressor is connected to the other end of the extension pipe (5) through the fifth delivery pipe; the first delivery pipe is equipped with a first electrically controlled valve, the second delivery pipe is equipped with a second electrically controlled valve, the third delivery pipe is equipped with a third electrically controlled valve, the fourth delivery pipe is equipped with a fourth electrically controlled valve, and the fifth delivery pipe is equipped with a fifth electrically controlled valve; each electrically controlled valve is electrically connected to the PLC controller.

8. The suction cylinder temporary pile shoe for deep-sea wind power according to claim 6 or 7, characterized in that, Two lifting lugs are symmetrically arranged on the outer side of the box of each pump skid (4).

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