Pile turning channel facility for sinking offshore wind power foundation pile

Abstract

The utility model provides a pile turning channel facility for sinking an offshore wind power foundation pile, and belongs to the technical field of offshore pile turning. Comprising a transport ship, an anchor winch, an anchor chain, a main steel wire rope and a tail-slipping flat mouth hook, a pile turning device is installed at the tail of the transport ship, the anchor winch is installed on the transport ship, a chain stopper is installed on the anchor chain, the anchor chain, the main steel wire rope and the tail-slipping flat mouth hook are connected through Kenter shackles, and the Kenter shackle on the right side is connected with the anchor winch through a pulley. By arranging the special pile turning channel facility, the problem that the hoisting height of a crane ship is not enough is solved, a steel pile with the length exceeding 1 / 3 of the maximum hoisting height can be hoisted, meanwhile, the requirement for movable pile turning is met, pile lifting and pile turning operation can be carried out smoothly, and the working efficiency is improved. The problems that the available length of a deck is larger than the length of a pipe pile when the steel pipe pile is transported and a pile lifting fulcrum is arranged on a transport ship or two crane ships are needed to be matched to lift and turn the pile on site are solved through pile turning channel construction.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore pile turning, in particular to a pile turning channel facility for offshore wind power foundation pile sinking. Background Art

[0002] With the gradual development and utilization of offshore wind power in deep sea areas, offshore wind power construction is gradually expanding to the deep sea area. The jacket foundation is suitable for offshore wind power projects with a water depth of 30-60 meters, and is applicable to the undeveloped sea areas in Fujian, Guangdong, Shandong, Zhejiang and other provinces in my country. With the difference in the seabed silt layer in each sea area and the continuous increase in the capacity of wind turbines, the design length of the jacket foundation pile has increased from the initial 70 meters to more than 130 meters, and there is still a trend of continued growth.

[0003] In my country, the lifting height of mainstream crane ships (1,000 to 1,500 tons) that can be used for offshore wind power construction generally does not exceed 90 meters, while ships with a lifting capacity of 3,000 to 5,000 tons are super-large and have a lifting height of about 130 meters. In pile sinking construction, if only the pile weight is considered, the use of a crane ship of 1,000 to 1,500 tons can meet the demand. However, this type of ship cannot meet the lifting and pile turning requirements of steel piles with a length of more than 90 meters. In this case, two crane ships of the same level are usually used to lift together or a crane ship with main and auxiliary hook functions is selected for self-turning of piles. However, in the case of tight ship and machinery resources, the applicability of this solution will be affected, and the ship and machinery costs of construction will also increase exponentially. Selecting a ship with a lifting capacity of 3,000 to 5,000 tons can meet most lifting weight and pile length requirements, but it can only meet the current design. With the expansion of offshore wind power to deep sea, the length of steel piles will increase, and the use of existing large ships is also limited. The cost of using ship machinery is also 3 to 5 times lower than that of a lower-level ship, and the economy is relatively poor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pile turning channel facility for offshore wind power foundation pile sinking to solve the problem that in the existing offshore wind power construction, for steel piles with a length of more than 90 meters, the deck length of the ship transporting the steel piles must be greater than the length of the steel pipe piles, and two crane ships are needed on site to cooperate in pile turning, resulting in relatively poor economy.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A pile turning channel facility for offshore wind power foundation pile sinking, comprising a transport ship, an anchor winch, an anchor chain, a main steel wire rope, and a tail hook. A pile turning device is installed at the tail of the transport ship, the anchor winch is installed on the transport ship, a chain stopper is installed on the anchor chain, the anchor chain, the main steel wire rope and the tail hook are connected by a Kent shackle, and the Kent shackle on the right side is connected to the anchor winch through a pulley;

[0007] The anchor winch is used to recover the channel anchor chain, main steel wire rope and tail flat-mouthed hook, the anchor chain is used to fix the channel and facilitate the stability of the pile tip when turning the pile, the tail flat-mouthed hook is used to clamp the tip of the steel pile and serve as a fixed fulcrum, and the pile turner is used to redirect the force point and stabilize the steel pile when turning the pile.

[0008] Preferably, the Kent shackle is provided with a swivel, and the swivel is used to enable the Kent shackle to rotate 360°.

[0009] Preferably, the pile turner comprises a base and an arc-shaped support plate, the base is fixedly connected to the transport ship, and the base and the arc-shaped support plate can be turned 180°.

[0010] Preferably, a plurality of first connecting rings are installed on the upper surface of the base, a plurality of second connecting rings are installed on the lower surface of the arc-shaped support plate, and the first connecting rings are rotatably connected to the second connecting rings via pins.

[0011] Preferably, the chain stopper is a knife-type chain stopper.

[0012] Preferably, a recovery wire rope is provided at the connection between the main steel wire rope and the tail flat-mouthed hook, and the recovery wire rope is used to hoist the main steel wire rope and the tail flat-mouthed hook of the fallen part after the pile turning is completed.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, the problem of insufficient lifting height of the crane ship is solved by setting up a special pile-turning channel facility, so that steel piles exceeding 1 / 3 of the maximum lifting height can be lifted, and at the same time, the demand for mobile pile turning is met, so that pile lifting and pile turning operations can be carried out smoothly. The use of pile-turning channel construction also solves the problem of the available length of the deck being greater than the length of the pipe pile when transporting steel pipe piles, and the problem of setting up pile lifting fulcrums on the transport ship or requiring two crane ships on site to cooperate in pile lifting and pile turning.

[0015] In the above scheme, when selecting a transport ship, it is only necessary to ensure that the available length of the deck is 2 / 3 of the length of the steel piles. There is no need to consider setting up fixed pile-turning fulcrums on the transport ship, thereby limiting the range of choices for the transport ship. This not only reduces the cost of crane ships and transport ships under the same construction environment, but also makes the selection of construction ship types more economical and applicable.

[0016] In the above scheme, it is not easy to damage the deck of the transport ship when piling on the deck of the transport ship through a single fulcrum, and the swing range of the steel piles in the initial stage of piling when encountering sudden waves or strong winds during the direct piling process of the transport ship is small, avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the installation structure of the pile turning channel facilities for offshore wind power foundation pile sinking;

[0019] Figure 2 A schematic diagram of the process structure of the pile turning process method for offshore wind power foundation pile sinking;

[0020] Figure 3 A schematic diagram of the structure of a pile turning device for a pile turning channel facility used for sinking offshore wind power foundation piles;

[0021] Figure 4 A schematic diagram of the base structure of a pile turning device for a pile turning channel facility for sinking offshore wind power foundation piles;

[0022] Figure 5 Schematic diagram of the arc-shaped support plate structure of the pile turning device of the pile turning channel facility for offshore wind power foundation pile sinking.

[0023] [reference numerals]

[0024] 1. Transport ship; 2. Anchor winch; 3. Anchor chain; 4. Main wire rope; 5. Tail hook; 6. Pile turner; 7. Chain stopper; 8. Pulley; 9. Kent shackle; 10. Swivel; 11. Recovering wire rope; 601. Base; 602. Arc support plate; 603. First connecting ring; 604. Second connecting ring.

[0025] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0026] The following is a detailed description of a pile turning channel facility for offshore wind power foundation pile sinking provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0027] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0028] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0029] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0030] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0031] like Figure 1-5As shown, the embodiment of the utility model provides a pile turning channel facility for offshore wind power foundation pile sinking, including a transport ship 1, an anchor winch 2, an anchor chain 3, a main steel wire rope 4, and a tail-slip flat-mouth hook 5. The main steel wire rope 4 is an important facility for pile lifting and pile turning. It moves with the turning of the steel pile during pile turning and is used to bear the steel pile. The model is selected according to the weight of the steel pile and the length of the steel pile that needs to be extended outboard of the transport ship 1. The safety factor can be selected as 3 times. The stern of the transport ship 1 is installed with a pile turning device 6, the anchor winch 2 is installed on the transport ship 1, and the anchor chain 5 is installed on the stern of the transport ship 1. 3 is equipped with a chain stopper 7, which is a knife-type chain stopper used by ordinary ships. The specifications of the anchor chain 3 and the size of the chain stopper 7 are set according to the weight of the steel pile. The anchor chain 3 and the knife-type chain stopper 7 are commonly used equipment for ships. The anchor chain 3, the main steel wire rope 4 and the tail hook 5 are connected by a Kent shackle 9. The right Kent shackle 9 is connected to the anchor winch 2 through a pulley 8. The Kent shackle 9 is used as the main steel wire rope 4 connecting the anchor chain 3 and the channel. The model and tonnage are set according to the weight of the steel pile. It is a common facility for ship anchor chains;

[0032] The anchor winch 2 is used to recover the channel anchor chain 3, the main steel wire rope 4 and the tail flat-mouthed hook 5. The anchor winch 2 is selected with a tonnage suitable for the total weight of the channel facilities. The main steel wire rope 4 of the winch is of the required length. The anchor winch 2 is a commonly used ship equipment. The anchor chain 3 is used to fix the channel and facilitate the stability of the pile tip when turning the pile. The tail flat-mouthed hook 5 is used to clamp the tip of the steel pile and serve as a fixed fulcrum. It automatically unhooks after the pile turning is completed by the crane. It is a commonly used engineering equipment. The pile turner 6 is used to turn the force point and stabilize the steel pile when turning the pile. The pile turner 6 needs to be customized according to the weight of the steel pile, serves as a fixed fulcrum, and can be turned 180°.

[0033] like Figure 1 and Figure 2 As shown, in this embodiment, a swivel 10 is provided on the Kent shackle 9, and the swivel 10 is used to enable the Kent shackle 9 to rotate 360 ​​degrees.

[0034] This setting is more flexible, easier to purchase, has a wide range of applications, and is highly applicable, safe, and economical.

[0035] like Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the pile turning device 6 includes a base 601 and an arc-shaped support plate 602. The base 601 is fixedly connected to the transport ship 1, and the base 601 and the arc-shaped support plate 602 can be turned 180°;

[0036] A plurality of first connection rings 603 are installed on the upper surface of the base 601 , and a plurality of second connection rings 604 are installed on the lower surface of the arc-shaped support plate 602 . The first connection rings 603 are rotatably connected to the second connection rings 604 via pins.

[0037] In this way, the pile turning device 6 limits the position of the steel pile and acts as a fulcrum when turning the pile. When encountering sudden waves or strong winds during the direct pile lifting process, the swing range of the steel pile is small in the initial stage of pile lifting, thereby avoiding safety hazards.

[0038] In this embodiment, the chain stopper is a knife-type chain stopper;

[0039] The knife-type chain stopper 7 is set as a common ship use model, which is low in price and safe in use.

[0040] like Figure 1 and Figure 2 As shown, in this embodiment, a recovery wire rope 11 is provided at the connection between the main steel wire rope 4 and the tail flat-mouthed hook 5. The recovery wire rope 11 is used to lift the main steel wire rope 4 and the tail flat-mouthed hook 5 that have fallen into the water after the pile turning is completed.

[0041] When the steel pile is fully erected, the hook is retracted to make the tail hook 5 fall off automatically, and the recovery wire rope 11 is tightened after the crane is lifted off the steel pile. At this time, the tail hook 5 and the main wire rope 4 can be recovered by the recovery wire rope 11 to prepare for the next steel pile operation.

[0042] A pile turning process for offshore wind power foundation pile sinking, the pile turning process comprising the following steps:

[0043] Step 1: Preliminary selection of crane ship and transport ship 1 based on the weight, length and diameter of the steel pipe pile to be hoisted;

[0044] Step 2: Load the transport vessel 1 so that the tip of the steel pile points to the stern.

[0045] Step 3: On the side of the transport ship 1, pile turning channel facilities are set according to the optimal span and lifting height after the crane ship and the transport ship 1 are berthed.

[0046] Step 4: Use the pile turning channel facilities to lift and turn the piles.

[0047] In this embodiment, after the crane ship and transport ship 1 are initially selected in step one, the steps of loading and pile turning channels are simulated on the deck using CAD drawings according to the parameters of the selected transport ship 1, and the optimal span and lifting height are selected using the lifting curve parameters of the crane ship's crane, and the lifting weight is simulated using CAD software.

[0048] In this embodiment, the transport ship 1 arranges the deck for loading according to the loading drawings, and reserves the location of the pile turning channel facilities.

[0049] In this embodiment, the method for setting up the pile turning passage facility is as follows:

[0050] First, draw the center line, and weld the bracket at the ship rib position according to the design drawing, then install the pile turner 6 at the stern of the transport ship 1, ensure that the bracket and the bottom plate elevation of the pile turner 6 are consistent, and the height of the bracket should exceed 2 / 3 of the diameter of the steel pile. Then, arrange the anchor chain 3, Kent shackle 9 and main wire rope 4 along the center line under the bracket to meet the design length requirements, finally connect the anchor winch 2, main wire rope 4 and anchor chain 3, and install the tail flat hook 5 at the end of the main wire rope 4.

[0051] Note: The connection of each component should be ensured to be safe and firm. The chain stopper 7 should be welded on the deck of the transport ship 1 and protected with a Z-shaped steel plate. The welding points of each deck and equipment should be on the ship's ribs to avoid damage to the ship's structure.

[0052] The pile turning device 6 should be suitable for the diameter of the steel pipe pile used in this project. The distance between the steel piles placed in the side of the pile turning device should be less than 5mm. The height of the pile turning device 6 should reach 2 / 3 of the diameter of the steel pile. The steel pile bracket should be welded firmly, with the upper end exceeding 2 / 3 of the diameter of the steel pile, and the distance between the two sides and the pile should be less than 10mm, so as to ensure that the steel pile moves vertically upward in the initial stage of pile lifting and turning.

[0053] When selecting the length of the steel pile to span the distance from the stern of the transport ship 1, it should be ensured that the pile tip does not touch the water surface after the pile is turned over. At the same time, the water depth should be greater than the length of the steel pile exposed at the stern to prevent the pile tip from sinking into the mud after the pile is turned over.

[0054] In this embodiment, after the pile turning channel facility is set up, the equipment used in the pile turning channel facility is positioned, checked, welded and reinforced according to the drawings, and each equipment and facility is connected and tested to meet the design requirements.

[0055] In this embodiment, the specific method of using the pile turning channel facility to lift and turn the pile is as follows:

[0056] First, the steel pipe pile is translated to the upward pile-turning channel, the tail flat-mouth hook 5 is hung on the pile tip, and then the connecting anchor chain 3 and the main steel wire rope 4 are tightened, and then the knife chain stopper 7 is used to fix the anchor chain 3, and then a special lifting device is used to clamp the pile top for pile lifting, and when the steel pile is fully erected, the hook is retracted to make the tail flat-mouth hook 5 fall off automatically, and after the crane lifts off the steel pile, the tail flat-mouth hook 5 and the main steel wire rope 4 are recovered to prepare for the next steel pile operation.

[0057] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0058] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pile turning channel facility for offshore wind power foundation pile sinking, characterized in that: The invention comprises a transport ship (1), an anchor winch (2), an anchor chain (3), a main steel wire rope (4), and a tail-slipping flat-mouth hook (5); a pile turner (6) is installed at the tail of the transport ship (1); the anchor winch (2) is installed on the transport ship (1); a chain stopper (7) is installed on the anchor chain (3); the anchor chain (3), the main steel wire rope (4) and the tail-slipping flat-mouth hook (5) are connected by a Kent shackle (9); the Kent shackle (9) on the right side is connected to the anchor winch (2) by a pulley (8); The anchor winch (2) is used to recover the channel anchor chain (3), the main steel wire rope (4) and the tail flat-mouthed hook (5); the anchor chain (3) is used to fix the channel and facilitate the stability of the pile tip when turning the pile; the tail flat-mouthed hook (5) is used to clamp the tip of the steel pile and serve as a fixed fulcrum; the pile turner (6) is used to turn the force point and stabilize the steel pile when turning the pile; The Kent shackle (9) is provided with a swivel (10), and the swivel (10) is used to enable the Kent shackle (9) to rotate 360 ​​degrees.

2. The pile turning channel facility for offshore wind power foundation pile sinking according to claim 1 is characterized in that: The pile turner (6) comprises a base (601) and an arc-shaped support plate (602); the base (601) is fixedly connected to the transport ship (1); and the base (601) and the arc-shaped support plate (602) can be turned 180 degrees.

3. The pile turning channel facility for offshore wind power foundation pile sinking according to claim 2 is characterized in that: A plurality of first connecting rings (603) are installed on the upper surface of the base (601), and a plurality of second connecting rings (604) are installed on the lower surface of the arc-shaped support plate (602). The first connecting rings (603) are rotatably connected to the second connecting rings (604) via pins.

4. The pile turning channel facility for offshore wind power foundation pile sinking according to claim 3 is characterized in that: The chain stopper (7) is a knife-type chain stopper.

5. The pile turning channel facility for offshore wind power foundation pile sinking according to claim 4 is characterized in that: A recovery wire rope (11) is provided at the connection between the main steel wire rope (4) and the tail flat-mouthed hook (5), and the recovery wire rope (11) is used to hoist the main steel wire rope (4) and the tail flat-mouthed hook (5) of the fallen part after the pile turning is completed.

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