Offshore wind turbine pile system and pile construction method

Abstract

The present invention provides an offshore wind turbine pile erection system, comprising a main pile, a ship for placing the main pile, a crane for hoisting the main pile, and a support pile for installing the main pile. A turnover mechanism is provided on one side of the ship, one end of the main pile is installed on the turnover mechanism, and the other end of the main pile is lifted by the crane to realize the main pile flipping from a horizontal state to a vertical state. The support pile includes a sleeve for installing the main pile. A fixed pulley is provided on the outer side of the sleeve. A cable chain is installed at one end of the main pile close to the flipping mechanism. The end of the cable chain extends to the ship after passing through the fixed pulley, and the cable chain is pulled to realize the alignment of the main pile and the sleeve. The present invention overcomes a large horizontal force in the process of flipping the main pile from a horizontal state to a vertical state by setting a flipping mechanism. In addition, by setting the cable chain and the fixed pulley to cooperate with each other, the main pile can reduce shaking after entering the seawater, which is conducive to the precise alignment of the main pile and the sleeve. In addition, each component is relatively simple and the construction cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power pile foundation construction, and in particular to an offshore wind turbine pile erection system and a pile erection construction method. Background Art

[0002] The construction of offshore wind turbine piles is one of the important links in the construction of offshore wind farms. Various parameters need to be controlled during the construction process, such as hoisting height, inclination angle, sinking speed of the pile body, sinking depth of the pile head, etc. At the same time, meteorological and hydrological factors need to be considered to ensure construction safety. The weight of wind turbine piles is usually 600-1200t. Therefore, in the process of hoisting the pile body, it is necessary to overcome the huge horizontal force, and also consider the problem of the falling position of the pile body being pushed and offset after entering the seawater. The existing way to solve the problem of offshore wind turbine pile construction usually uses a full-rotation crane and a pile turner to work together. It can indeed effectively solve the difficulties of offshore wind turbine pile construction, but the cost of these equipment is too high, the maintenance cost and difficulty are large, and the construction cost is high. Summary of the invention

[0003] The purpose of the present invention is to provide an offshore wind turbine pile erection system and pile erection construction method, which can solve the problem of needing to overcome huge horizontal forces during pile hanging and the problem of pile bodies easily becoming cheap when entering seawater, while taking into account the construction cost of offshore wind turbine pile erection construction.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] An offshore wind turbine pile erection system includes a main pile 1, a ship 2 for placing the main pile 1, a crane 3 for hoisting the main pile 1, and a support pile 4 for installing the main pile 1. A flipping mechanism 21 is provided on one side of the ship 2, and one end of the main pile 1 is installed on the flipping mechanism 21. The crane 3 cooperates with the other end of the main pile 1 to flip the main pile 1 from a horizontal state to a vertical state. The support pile 4 includes a sleeve 41 for installing the main pile 1. A fixed pulley 411 is provided on the outside of the sleeve 41. A cable chain 11 is installed at one end of the main pile 1 close to the flipping mechanism 21. The end of the cable chain 11 extends to the ship 2 after passing through the fixed pulley 411, and the cable chain 11 is pulled to realize the alignment of the main pile 1 and the sleeve 41.

[0006] Preferably, the ship 2 is provided with a motor 22 and a winding roller 23. The end of the cable chain 11 is fixed to the winding roller 23 after passing through the fixed pulley 411. The output end of the motor 22 is connected to the winding roller 23 to drive the winding roller 23 to rotate, thereby recovering the cable chain 11.

[0007] Preferably, a guide plate 24 is rotatably connected to one side of the ship 2 close to the flipping mechanism 21, and an air bag 25 is provided below the guide plate 24. The air bag 25 is installed on the outside of the ship 2 and is connected to an air pump installed inside the ship 2 through an air pipe; the air bag 25 drives the guide plate 24 to rotate.

[0008] Preferably, a hinge portion 26 is provided on one side of the ship 2 close to the guide plate 24. The guide plate 24 is rotatably connected to the ship 2 via the hinge portion 26.

[0009] Preferably, the turnover mechanism 21 comprises a U-shaped support plate 211, a rotating plate 212 for mounting the main pile 1, and a plurality of jacks 213 for supporting the U-shaped support plate 211. The rotating plate 212 is rotatably mounted on the U-shaped support plate 211. The rotating plate 212 is a curved surface structure.

[0010] Preferably, a curved channel 241 is formed on the upper surface of the guide plate 24 , and the position of the curved channel 241 corresponds to the position of the flip mechanism 21 .

[0011] Preferably, a clamping plate 12 and a pull ring 13 for connecting with the cable chain 11 are detachably mounted on the outer side of the main pile 1. The clamping plate 12 is located on one side of the flipping mechanism 21 away from the guide plate 24, and the pull ring 13 is located on the other side of the flipping mechanism 21.

[0012] A pile construction method, using an offshore wind turbine pile system according to any one of claims 1 to 7 for construction, the construction steps are as follows:

[0013] S1: Preparation before pile erection. Before starting to erect piles, one end of the main pile 1 is hoisted on the turning mechanism 21, and the clamping plate 12 and the pull ring 13 are installed on the outside of the main pile 1 according to the on-site conditions, and the air pump is started to inflate the airbag 25 to push the guide plate 24 to rotate and rise.

[0014] S2: Install the cable chain 11 and connect one end of the cable chain 11 to the pull ring 13 . The diver passes the other end of the cable chain 11 through the fixed pulley 411 and leads it to the vessel 2 , and fixes it on the winding roller 23 .

[0015] S3: hoisting the main pile 1 , the crane 3 hoists one end of the main pile 1 away from the turnover mechanism 21 , so that the main pile 1 is separated from the turnover mechanism 21 and stands upright, and the lower end of the main pile 1 is engaged with the end of the arc channel 241 .

[0016] S4: Pile dropping, the crane 3 lifts the main pile 1 and slowly drops it into the seawater. In this process, the motor 22 is started to drive the winding roller 23 to recycle the cable chain 11, and the cable chain 11 pulls the lower end of the main pile 1 to make it correspond to the position of the sleeve 41 until a part of the lower end of the main pile 1 falls into the sleeve 41.

[0017] S5: Disassembly: The diver disassembles the clamping plate 12 and the pull ring 13 from the outside of the main pile 1, and then the main pile 1 completely falls into the sleeve 41. The winding roller 23 continuously recycles the cable chain 11.

[0018] Preferably, in step S1, the clamping plate 12 and the pull ring 13 are installed on the outer side of the main pile 1 by bolts.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] 1. The turning mechanism 21 is conducive to turning the main pile 1 from a horizontal state to a vertical state, overcoming the huge horizontal force in the state turning process.

[0021] 2. The cable chain 11 cooperates with the fixed pulley 411 to prevent the main pile 1 from shaking too much due to being pushed by seawater, thereby improving the alignment accuracy between the main pile 1 and the sleeve 41.

[0022] 3. The guide plate 24 and the airbag 25 are used to share the gravity of the main pile 1 turning from a horizontal state to a vertical state, making the turning process of the main pile 1 easier and faster, reducing the construction difficulty and improving the construction efficiency. The curved channel 241 opened on the guide plate 24 can effectively limit the movement of the main pile 1 and avoid large shaking during the turning process. At the same time, during the main pile 1 falling process, the end of the curved channel 241 can still support the side of the main pile 1 to prevent it from shaking too much, thereby improving the alignment accuracy of the main pile 1 and the sleeve 41. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an offshore wind turbine piling system and a piling construction method of the present invention.

[0024] Figure 2 for Figure 1 A is an enlarged view of the middle image.

[0025] Figure 3 for Figure 1 Top view of the .

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the support column.

[0027] Figure 5 for Figure 2Schematic diagram of the structure of the guide plate.

[0028] Figure 6 for Figure 2 Top view of the flip mechanism in .

[0029] Figure 7 This is the process status diagram of pile construction.

[0030] Figure 8 for Figure 7 The end of the middle arc channel can still support the side of the main pile.

[0031] The following are the descriptions of the reference numerals:

[0032] 1: main pile, 2: ship, 3: crane, 4: support column, 11: chain, 12: clamping plate, 13: pull ring, 21: turning mechanism, 22: motor, 23: winding roller, 24: guide plate, 25: airbag, 26: hinged part, 41: sleeve, 211: U-shaped support plate, 212: rotating plate, 213: jack, 241: curved channel, 411: fixed pulley. DETAILED DESCRIPTION

[0033] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0034] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand the advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0035] Embodiment 1

[0036] The present invention overcomes the great horizontal force in the process of turning the main pile from a horizontal state to a vertical state by setting a turning mechanism. In addition, by setting the cable chain and the fixed pulley to cooperate with each other, the shaking of the main pile after entering the seawater can be reduced, which is conducive to the accurate alignment of the main pile and the sleeve. In addition, each component is relatively simple and the construction cost is low.

[0037] like Figure 1 , Figure 2 and Figure 4As shown, an offshore wind turbine pile erection system includes a main pile 1, a ship 2 for placing the main pile 1, a crane 3 for hoisting the main pile 1, and a support pile 4 for installing the main pile 1. A turnover mechanism 21 is provided on one side of the ship 2, and one end of the main pile 1 is installed on the turnover mechanism 21. The crane 3 is used to lift the other end of the main pile 1 to achieve the flipping of the main pile 1 from a horizontal state to a vertical state. The support pile 4 includes a sleeve 41 for installing the main pile 1. A fixed pulley 411 is provided on the outside of the sleeve 41. A cable chain 11 is installed at one end of the main pile 1 close to the flip mechanism 21. The end of the cable chain 11 extends to the ship 2 after passing through the fixed pulley 411, and the cable chain 11 is pulled to achieve the alignment of the main pile 1 and the sleeve 41. The cable chain 11 can be replaced with a hemp rope, and is not specified as a metal material.

[0038] In this embodiment, the flipping mechanism 21 is conducive to flipping the main pile 1 from a horizontal state to a vertical state, overcoming the large horizontal force during the state flipping process. The chain 11 cooperates with the fixed pulley 411 to prevent the main pile 1 from shaking too much due to the push of seawater, thereby improving the alignment accuracy of the main pile 1 and the sleeve 41.

[0039] Further, such as Figure 3 As shown, the ship 2 is provided with a motor 22 and a winding roller 23. The end of the cable chain 11 passes through the fixed pulley 411 and is fixed to the winding roller 23. The output end of the motor 22 is connected to the winding roller 23 to drive the winding roller 23 to rotate, thereby recovering the cable chain 11.

[0040] Furthermore, a guide plate 24 is rotatably connected to one side of the ship 2 close to the flipping mechanism 21, and an air bag 25 is provided below the guide plate 24. The air bag 25 is installed on the outside of the ship 2 and is connected to an air pump installed inside the ship 2 through an air pipe; the air bag 25 drives the guide plate 24 to rotate.

[0041] Further, such as Figure 5 As shown, a curved channel 241 is formed on the upper surface of the guide plate 24 , and the position of the curved channel 241 corresponds to the position of the flip mechanism 21 .

[0042] In this embodiment, the guide plate 24 and the airbag 25 are used to share the gravity of the main pile 1 flipping from a horizontal state to a vertical state, making the flipping process of the main pile 1 easier and faster, reducing the construction difficulty and improving the construction efficiency. The arc channel 241 opened on the guide plate 24 can effectively limit the movement of the main pile 1 and avoid large shaking during the flipping process. At the same time, during the main pile 1 falling process, the end of the arc channel 241 can still support the side of the main pile 1 to prevent it from shaking too much, thereby improving the alignment accuracy of the main pile 1 and the sleeve 41.

[0043] Furthermore, a hinge portion 26 is provided on one side of the ship 2 close to the guide plate 24. The guide plate 24 is rotatably connected to the ship 2 via the hinge portion 26.

[0044] Further, such as Figure 6 As shown, the flip mechanism 21 includes a U-shaped support plate 211, a rotating plate 212 for mounting the main pile 1, and a plurality of jacks 213 for supporting the U-shaped support plate 211. The rotating plate 212 is rotatably mounted on the U-shaped support plate 211, and the rotatable mounting method here is the prior art, for example, rotating rods are arranged on both sides of the rotating plate 212, and fixed plates are arranged on both sides of the U-shaped support plate 211, and the rotating rods are rotatably connected with the fixed plates. The rotating plate 212 is a curved surface structure.

[0045] Furthermore, a clamping plate 12 and a pull ring 13 for connecting with the cable chain 11 are detachably mounted on the outer side of the main pile 1. The clamping plate 12 is located on the side of the flipping mechanism 21 away from the guide plate 24, and the pull ring 13 is located on the other side of the flipping mechanism 21. The clamping plate 12 and the pull ring 13 are small parts, which are easy to disassemble and assemble, are conducive to construction, and are also convenient for recycling, and have low cost.

[0046] like Figure 7 As shown, the pile construction method adopts an offshore wind turbine pile system according to any one of claims 1 to 7 for construction, and the construction steps are as follows:

[0047] S1: Preparation before pile erection. Before starting to erect piles, one end of the main pile 1 is hoisted on the turning mechanism 21, and the clamping plate 12 and the pull ring 13 are installed on the outside of the main pile 1 according to the on-site conditions, and the air pump is started to inflate the airbag 25 to push the guide plate 24 to rotate and rise.

[0048] S2: Install the cable chain 11 and connect one end of the cable chain 11 to the pull ring 13 . The diver passes the other end of the cable chain 11 through the fixed pulley 411 and leads it to the vessel 2 , and fixes it on the winding roller 23 .

[0049] S3: hoisting the main pile 1, the crane 3 hoists the end of the main pile 1 away from the turnover mechanism 21, so that the main pile 1 is separated from the turnover mechanism 21 and stands upright, and the lower end of the main pile 1 is engaged with the end of the arc channel 241 (such as Figure 8 as shown).

[0050] S4: Pile dropping, the crane 3 lifts the main pile 1 and slowly drops it into the seawater. In this process, the motor 22 is started to drive the winding roller 23 to recycle the cable chain 11, and the cable chain 11 pulls the lower end of the main pile 1 to make it correspond to the position of the sleeve 41 until a part of the lower end of the main pile 1 falls into the sleeve 41.

[0051] S5: Disassembly: The diver disassembles the clamping plate 12 and the pull ring 13 from the outside of the main pile 1, and then the main pile 1 completely falls into the sleeve 41. The winding roller 23 continuously recycles the cable chain 11.

[0052] Furthermore, in step S1 , the clamping plate 12 and the pull ring 13 are installed on the outer side of the main pile 1 by means of bolts.

[0053] Embodiment 2

[0054] An offshore wind turbine piling system comprises a main pile 1, a vessel 2 for placing the main pile 1, a crane 3 for hoisting the main pile 1, and a supporting pile 4 for installing the main pile 1.

[0055] A plurality of flipping mechanisms 21 are provided on both sides of the ship 2, and one end of each of the main piles 1 is installed on one of the flipping mechanisms 21, and the other end of the main pile 1 is lifted by the crane 3 to flip the main pile 1 from a horizontal state to a vertical state. The support pile 4 includes a sleeve 41 for installing the main pile 1. A fixed pulley 411 is provided on the outer side of the sleeve 41. A cable chain 11 is installed at one end of the main pile 1 close to the flipping mechanism 21. The end of the cable chain 11 passes through the fixed pulley 411 and extends to the ship 2, and the cable chain 11 is pulled to align the main pile 1 with the sleeve 41. The cable chain 11 can be replaced with a hemp rope, and is not specified as a metal material.

[0056] Furthermore, the ship 2 is provided with a plurality of motors 22 and a plurality of winding rollers 23. The number of the motors 22 and the number of the winding rollers 23 is the same as the number of the turning mechanism 21, and the end of the cable chain 11 is fixed to the winding roller 23 after passing through the fixed pulley 411. The output end of the motor 22 is connected to the winding roller 23 to drive the winding roller 23 to rotate, thereby recovering the cable chain 11.

[0057] Furthermore, a guide plate 24 is connected to the rotation of one side of the ship 2 close to each of the flipping mechanisms 21, and an air bag 25 is arranged below each of the guide plates 24. The air bag 25 is installed on the outside of the ship 2 and is connected to an air pump installed inside the ship 2 through an air pipe; the air bag 25 drives the guide plate 24 to rotate.

[0058] In this embodiment, multiple turning mechanisms 21 are provided on both sides of the ship 2, which is conducive to simultaneous construction at multiple locations, or when the ship changes position for construction, there is no need to adjust the ship to a fixed position, and multiple turning mechanisms 21 can be used as options for construction positions.

[0059] In the description of the present invention, it is necessary to understand that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention without creative work should be included in the protection scope of the present invention.

Claims

1. An offshore wind turbine piling system, comprising a main pile (1), a vessel (2) for placing the main pile (1), a crane (3) for hoisting the main pile (1), and a supporting pile (4) for installing the main pile (1); characterized in that: A turnover mechanism (21) is provided on one side of the ship (2); one end of the main pile (1) is mounted on the turnover mechanism (21), and cooperates with the crane (3) to lift the other end of the main pile (1) to achieve the main pile (1) being flipped from a horizontal state to a vertical state; the support pile (4) comprises a sleeve (41) for mounting the main pile (1); a fixed pulley (411) is provided on the outside of the sleeve (41); a cable chain (11) is installed at one end of the main pile (1) close to the turnover mechanism (21); the cable chain (11) is The end extends to the ship (2) after passing through the fixed pulley (411), and pulls the cable chain (11) to achieve alignment between the main pile (1) and the sleeve (41); a guide plate (24) is rotatably connected to a side of the ship (2) close to the turnover mechanism (21), and an air bag (25) is provided below the guide plate (24); the air bag (25) is installed on the outside of the ship (2) and is connected to an air pump installed inside the ship (2) through an air pipe; the air bag (25) drives the guide plate (24) to rotate.

2. An offshore wind turbine piling system as claimed in claim 1, characterized in that: The ship (2) is provided with a motor (22) and a winding roller (23); the end of the cable chain (11) is fixed to the winding roller (23) after passing through the fixed pulley (411); the output end of the motor (22) is connected to the winding roller (23) to drive the winding roller (23) to rotate, thereby recovering the cable chain (11).

3. An offshore wind turbine piling system as claimed in claim 2, characterized in that: A hinged portion (26) is provided on one side of the ship (2) close to the guide plate (24); the guide plate (24) is rotatably connected to the ship (2) via the hinged portion (26).

4. An offshore wind turbine piling system as claimed in claim 3, characterized in that: The turning mechanism (21) comprises a U-shaped support plate (211), a rotating plate (212) for mounting the main pile (1), and a plurality of jacks (213) for supporting the U-shaped support plate (211); the rotating plate (212) is rotatably mounted on the U-shaped support plate (211); and the rotating plate (212) is a curved surface structure.

5. An offshore wind turbine piling system as claimed in claim 4, characterized in that: An arc-surface channel (241) is provided on the upper surface of the guide plate (24), and the position of the arc-surface channel (241) corresponds to the position of the turnover mechanism (21).

6. An offshore wind turbine piling system as claimed in claim 5, characterized in that: A clamping plate (12) and a pull ring (13) for connecting with the cable chain (11) are detachably mounted on the outer side of the main pile (1); the clamping plate (12) is located on a side of the turnover mechanism (21) away from the guide plate (24), and the pull ring (13) is located on the other side of the turnover mechanism (21).

7. A pile construction method, characterized in that: The offshore wind turbine piling system according to claim 6 is used for construction, and the construction steps are as follows: S1: Preparation before pile erection. Before starting to erect the pile, one end of the main pile (1) is hoisted on the turning mechanism (21), the clamping plate (12) and the pull ring (13) are installed on the outside of the main pile (1) according to the on-site conditions, and the air pump is started to inflate the air bag (25) to push the guide plate (24) to rotate and rise; S2: installing the cable chain (11), connecting one end of the cable chain (11) to the pull ring (13), and the diver passing the other end of the cable chain (11) through the fixed pulley (411) and then leading it to the ship (2), and fixing it on the winding roller (23); S3: hoisting the main pile (1), the crane (3) hoisting one end of the main pile (1) away from the flipping mechanism (21), so that the main pile (1) is separated from the flipping mechanism (21) and stands upright, and the lower end of the main pile (1) is clamped with the end of the curved channel (241); S4: Pile dropping, the crane (3) lifts the main pile (1) and slowly drops it into the seawater; during this process, the motor (22) is started to drive the winding roller (23) to retract the cable chain (11), and the cable chain (11) pulls the lower end of the main pile (1) to make it correspond to the position of the sleeve (41) until a part of the lower end of the main pile (1) falls into the sleeve (41); S5: Disassembly: The diver disassembles the clamping plate (12) and the pull ring (13) from the outside of the main pile (1), and then the main pile (1) completely falls into the sleeve (41); the winding roller (23) continuously recycles the cable chain (11).

8. The pile construction method according to claim 7, characterized in that: In step S1, the clamping plate (12) and the pull ring (13) are installed on the outside of the main pile (1) by means of bolts.

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