Offshore wind power composite cylinder foundation transportation installation protection device and construction method thereof

Abstract

The present application belongs to the offshore wind power foundation technical field, disclose a kind of offshore wind power composite cylinder type foundation transportation installation protection device and its construction method, including the umbrella-shaped support mechanism being connected with ship board and the air bag being sleeved outside umbrella-shaped support mechanism, umbrella-shaped support mechanism and air bag are set in each subcompartment inside;Umbrella-shaped support mechanism includes the column fixed to the bottom end of ship board, bottom support is arranged between the lower part of column and ship board;Middle support of movable and telescopic is arranged in the middle part of column, movable and foldable top support is arranged in the top of column;Air bag is pre-fixed in each subcompartment of assembled composite cylinder type foundation, after each subcompartment and each umbrella-shaped support mechanism are positioned, air bag is inflated to just lift composite cylinder type foundation from ship board, can form protection to each subcompartment in the process of transportation, avoid subcompartment plate to produce sway and produce bending deformation;And inflation to air bag can provide jacking force after transportation, improve installation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of offshore wind power foundation technology, specifically, it relates to a device and construction method for transporting and installing offshore wind power composite cylindrical foundations. Background Technology

[0002] Currently, composite cylindrical foundations, as a new type of offshore wind power foundation, differ from traditional cylindrical foundations in that their interiors are divided into multiple compartments using partition plates. During the descent process, the air pressure in each compartment can be adjusted to ensure the stable and safe lowering of the composite cylindrical foundation, guaranteeing its reasonable motion characteristics and towing stability.

[0003] Studies have found that while the presence of compartmentalized plates has a minimal impact on the foundation's load-bearing capacity, in extreme conditions, composite cylindrical foundations with compartments offer a higher safety margin. During the transportation of the composite cylindrical foundation to the burial site, the ship's speed cannot be controlled uniformly, and it is subjected to unpredictable environmental loads such as wind and waves, which may cause the individual compartment structures of the composite cylinder to loosen. Furthermore, because the compartmentalized plates are made of thin steel, they are prone to buckling under bending moment loads, potentially leading to bending and movement of the plates, and even causing unnecessary structural damage. Additionally, during transportation, the composite cylinder itself may also experience relative sliding with the ship's deck, resulting in some displacement. Summary of the Invention

[0004] This invention aims to solve the technical problem that composite cylindrical foundations are greatly affected by uncertain factors during transportation, resulting in unnecessary displacement and damage. It provides a protective device and construction method for the transportation and installation of offshore wind power composite cylindrical foundations, which can limit, buffer and protect the composite cylindrical foundations.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] According to one aspect of the present invention, a protective device for transporting and installing a composite cylindrical foundation for offshore wind power is provided, comprising an umbrella-shaped support mechanism connected to a ship plate and an airbag sleeved outside the umbrella-shaped support mechanism, wherein the umbrella-shaped support mechanism and the airbag are arranged as a set inside each compartment of the composite cylindrical foundation.

[0007] The umbrella-shaped support mechanism includes a column with its bottom fixed to the ship's plate, and several bottom supports connecting the lower part of the column to the ship's plate; a central support is provided in the middle of the column, the central support including a central cylinder fitted outside the column, the central cylinder being adjustable in position relative to the column and then fixed; several central support rods are fixedly connected to the outside of the central cylinder, the central support rods being radially evenly arranged around the axis of the column, and each of the central support rods being a telescopic structure; a top support is provided at the top of the column, the top support including a reinforcing section fitted outside the column, the reinforcing section being fixedly connected to the column; the reinforcing section... The external part of the section is fitted with a movable shaft, which can be adjusted and fixed relative to the reinforcing section. Several top support rods are connected to the top of the reinforcing section, and these rods are radially evenly arranged around the axis of the column. One end of each top support rod is hinged to the reinforcing section, and the other end is free. A folding rod is connected between each top support rod and the movable shaft; one end of the folding rod is hinged to the middle of the top support rod, and the other end is fixedly connected to the movable shaft. Thus, by moving the movable shaft up and down within the range of the reinforcing section, the folding rod can be moved to extend the top support rod upwards or fold it downwards.

[0008] The airbags are pre-fixed in each compartment of the assembled composite cylindrical foundation. After the composite cylindrical foundation is transferred from the shore to the ship and each compartment is positioned in accordance with the umbrella-shaped support mechanism, the airbags are inflated until they just lift the composite cylindrical foundation off the ship's deck, thus protecting each compartment during the transportation of the composite cylindrical foundation.

[0009] Furthermore, the bottom of the column is provided with a threaded structure and is threadedly connected to the ship plate.

[0010] Furthermore, the column is configured as a retractable structure.

[0011] Furthermore, the two ends of the bottom support are welded to the column and the ship plate, respectively.

[0012] Furthermore, the central cylinder is fixedly connected to the column by bolts. By changing the installation position of the bolts and different bolt holes on the column, the installation height of the central cylinder can be adjusted.

[0013] Furthermore, the movable shaft is fixedly connected to the reinforcing section by bolts. By changing the installation position of the bolts and different bolt holes on the reinforcing section, the installation height of the movable shaft can be adjusted.

[0014] Furthermore, the section between the free end of the top support rod and the folding rod is configured as a telescopic structure.

[0015] Furthermore, the top of the airbag is connected to an inflation / deflation pipe, which is connected to the outside through a valve on the top of the composite cylindrical base.

[0016] Furthermore, the area where the airbag contacts the umbrella-shaped support mechanism is thickened.

[0017] According to another aspect of the present invention, a construction method for the above-mentioned offshore wind power composite cylindrical foundation transportation, installation, and protection device is provided, characterized by comprising the following processes:

[0018] (1) The composite cylindrical foundation is assembled on shore and the airbags are temporarily fixed in each compartment of the composite cylindrical foundation.

[0019] (2) Fix the column of the umbrella-shaped support mechanism to the ship plate, and fix the bottom support to the column and the ship plate respectively; after adjusting the height position of the middle support and the top support on the column, extend the middle support and open and extend the top support so that the free ends of the middle support rod and the top support rod are respectively set by a distance from the inner wall of the compartment of the composite cylindrical foundation;

[0020] (3) Open the top valve of the composite cylindrical foundation and fill the airbag with stable gas so that the airbag expands and comes into contact with the inner wall of the compartment of the composite cylindrical foundation; stop inflating when the composite cylindrical foundation is just lifted off the ground, at which point the airbag can play a protective role.

[0021] (4) Transport the composite cylindrical foundation to the sinking location;

[0022] (5) Before lifting the composite cylindrical foundation, the airbag is inflated until the composite cylindrical foundation is lifted by the airbag, so as to reduce the lifting force and ensure the stability of the composite cylindrical foundation at the beginning of the lifting.

[0023] (6) After the composite cylindrical foundation is lifted to a sufficient height, the airbag is deflated and removed from the bottom of the composite cylindrical foundation to complete the subsequent sinking process.

[0024] The beneficial effects of this invention are:

[0025] This invention provides a buffer effect that restricts movement of each compartment, allowing the compartment panels to maintain their original shape, reducing structural damage, preventing swaying during transportation, and avoiding bending deformation due to bending moments. Furthermore, the inflation of the airbags after transportation provides lifting force, stabilizing the initial lifting stage, ensuring the composite cylinder is lifted smoothly, and improving installation efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the transportation and installation protection device provided by the present invention;

[0027] Figure 2 This is a schematic diagram of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention.

[0029] Figure 4 This is a three-dimensional in-situ schematic diagram of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention;

[0030] Figure 5 This is a schematic diagram of the folding and telescopic mechanism of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention;

[0031] Figure 6 This is a schematic diagram of the middle support structure of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention;

[0032] Figure 7 This is a schematic diagram of the top support structure of the umbrella-shaped support mechanism in the transportation and installation protection device provided by the present invention.

[0033] In the diagram: 1. Column; 2. Bottom support; 3. Middle support; 301. Central cylinder; 302. Support rod; 4. Top support; 401. Reinforcing section; 402. Movable shaft; 403. Top support rod; 404. Folding rod; 5. Airbag; 6. Composite cylinder compartment. Detailed Implementation

[0034] To further understand the content, features, and effects of this invention, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0035] like Figures 1 to 5 As shown, the present invention provides a protective device for the transportation and installation of a composite cylindrical foundation for offshore wind power. It mainly consists of an umbrella-shaped support mechanism connected to the ship plate and an airbag 5 fitted outside the umbrella-shaped support mechanism. Each compartment of the composite cylindrical foundation is equipped with an umbrella-shaped support mechanism and an airbag 5 to achieve the purpose of overall protection.

[0036] The umbrella-shaped support mechanism includes a column 1, a bottom support 2, a middle support 3, and a top support 4.

[0037] The bottom of column 1 is fixed to the ship plate. Preferably, a threaded structure is provided at the bottom of column 1 and threadedly connected to the ship plate to achieve its stability. Column 1 is designed as a telescopic structure to accommodate composite cylindrical foundations of different heights. Column 1 has multiple sets of vertically spaced bolt holes, with multiple bolt holes in each set evenly distributed circumferentially on the surface of column 1. These bolt holes are used to adjust the positions of the middle support 3 and the top support 4 on column 1.

[0038] The lower part of the column 1 is connected to the ship plate through several bottom supports 2 to better ensure the stability of the umbrella-shaped support mechanism and avoid problems such as tilting of the column 1. Typically, the number of bottom supports 2 is set to four. The bottom supports 2 are generally made of steel bars, and the two ends of each bottom support 2 are welded to the column 1 and the ship plate respectively.

[0039] A central support 3 is provided in the middle of the column 1. The central support 3 includes a central cylinder 301 and four central support rods 302. The central cylinder 301 is fitted onto the outside of the column 1 and fixedly connected to the column 1 by bolts. The installation height of the central cylinder 301 can be adjusted by changing the installation position of the bolts and different bolt holes. The four central support rods 301 are evenly arranged radially around the axis of the column 1. One end of each central support rod 301 is fixedly connected to the central cylinder 301, and the other end is a free end. The central support rods 301 are designed as a telescopic structure to accommodate composite cylindrical foundations of different diameters. The number of central support rods 302 is generally selected in the range of 4-8.

[0040] The top support 4 includes a reinforcing section 401, a movable shaft 402, eight top support rods 403, and the same number of folding rods 404 as the top support rods 403. The reinforcing section 401 is fitted onto the outer side of the top of the column 1 and is fixedly connected to the column 1. The movable shaft 402 is fitted onto the outer side of the reinforcing section 401 and is fixedly connected to the reinforcing section 401 by bolts; by changing the installation position of the bolts and different bolt holes, the installation height of the movable shaft 402 can be adjusted. The eight top support rods 403 are radially evenly arranged with the axis of the column 1 as the center. One end of each top support rod 403 is hinged to the top of the reinforcing section 401, and the other end is a free end. A folding rod 404 connects each top support rod 403 to the movable shaft 402. One end of the folding rod 404 is hinged to the middle of the top support rod 401, and the other end is fixedly connected to the movable shaft 402 by welding or other means. Therefore, the movable shaft 402 can move up and down within the range of the reinforcing section 401, and can drive the top support rod 401 to unfold upward or fold downward by moving the folding rod 403, thereby saving space to the greatest extent. In addition, the section between the free end of the top support rod 401 and the folding rod 403 can be set as a telescopic structure to accommodate composite cylindrical foundations of different diameters.

[0041] Airbag 5 is a closed, bag-like structure, typically made of rubber. An inflation / deflation pipe is connected to the top of airbag 5, which can be connected to the outside via a valve at the top of the composite cylindrical foundation. Stable gases such as nitrogen are introduced into airbag 5 through the inflation / deflation pipe, causing it to inflate and provide cushioning and protection. Since the umbrella-shaped support mechanism will rest against airbag 5 after inflation, to avoid damage to airbag 5, it is best to thicken the area where airbag 5 contacts the umbrella-shaped support mechanism, and to conduct an airtightness check before the composite cylindrical foundation is installed.

[0042] Airbags 5 are pre-fixed to each compartment of the assembled composite cylindrical foundation, usually using temporary fixing methods such as adhesive bonding. After the composite cylindrical foundation is transferred from the shore to the ship and each compartment is positioned in accordance with the corresponding umbrella-shaped support mechanism, the airbags 5 are inflated until they just lift the composite cylindrical foundation off the ship's deck, and the transportation process of the composite cylindrical foundation can begin.

[0043] The construction method for transporting, installing, and protecting the composite cylindrical foundation for offshore wind power is as follows:

[0044] (1) The composite cylindrical foundation is assembled on shore, and the airbag 5 is temporarily fixed in each compartment of the composite cylindrical foundation;

[0045] (2) Fix the column 1 of the umbrella-shaped support mechanism to the ship plate, and fix the bottom support 2 to the column 1 and the ship plate respectively; after adjusting the height position of the middle support 3 and the top support 4 on the column 1, extend the middle support 3 and open and extend the top support 4 so that the free ends of the middle support rod 301 and the top support rod 401 are respectively set at a distance of 2-2.5m from the inner wall of the compartment of the composite cylindrical foundation.

[0046] (3) Open the top valve of the composite cylindrical foundation and use the inflation device to inflate the airbag 5 with stable gases such as nitrogen through the inflation and deflation pipe, so that the airbag 5 expands and comes into contact with the inner wall of the compartment of the composite cylindrical foundation; stop inflation when the composite cylindrical foundation is just lifted off the ground, at which point the airbag 5 can play a good role in buffering and protection.

[0047] (4) Transport the composite cylindrical foundation to the sinking location.

[0048] (5) Before lifting the composite cylindrical foundation, continue to inflate the airbag 5 until the composite cylindrical foundation is lifted by the airbag 5. This reduces the lifting force and ensures the stability of the composite cylindrical foundation at the beginning of the lifting.

[0049] (6) After the composite cylindrical foundation is lifted to a sufficient height, the airbag 5 is deflated through the inflation / deflation pipe, and the airbag 5 is removed from the bottom of the composite cylindrical foundation to complete the subsequent sinking process. The middle support 3 and the top support 4 of the umbrella-shaped support mechanism can also be reduced in size. The middle support rod 301 is reduced to its shortest length, and the top support rod 401 is reduced to its shortest length and folded.

[0050] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many specific modifications under the guidance of the present invention without departing from the spirit of the invention and the scope of protection of the claims, and these modifications all fall within the scope of protection of the present invention.

Claims

1. A marine wind power composite cylinder type foundation transportation installation protection device, characterized in that, The umbrella-shaped support mechanism connected with the ship plate and the air bag sleeved outside the umbrella-shaped support mechanism are arranged in each sub-compartment of the composite cylinder foundation in sets; The umbrella-shaped support mechanism includes a column fixed at the bottom end of the ship plate, the bottom of the column is provided with a threaded structure and is threadedly connected with the ship plate; the column is provided as a telescopic structure, and a plurality of bottom supports are connected between the lower part of the column and the ship plate; The middle part of the column is provided with a middle support, the middle support includes a center cylinder sleeved outside the column, the center cylinder can be adjusted in position and then fixed relative to the column; a plurality of middle support rods are fixedly connected outside the center cylinder, the middle support rods are uniformly arranged radially with the axis of the column as the center, and each of the middle support rods is a telescopic structure; The top part of the column is provided with a top support, the top support includes a reinforcing section sleeved outside the column, the reinforcing section is fixedly connected with the column; an active shaft is sleeved outside the reinforcing section, the active shaft can be adjusted in position and then fixed relative to the reinforcing section; a plurality of top support rods are connected with the top end of the reinforcing section, the top support rods are uniformly arranged radially with the axis of the column as the center; one end of each of the top support rods is hingedly connected with the reinforcing section, and the other end is a free end; a folding rod is connected between each of the top support rods and the active shaft, one end of the folding rod is hingedly connected with the middle part of the top support rod, and the other end is fixedly connected with the active shaft; the section between the free end of the top support rod and the folding rod is provided as a telescopic structure; thus, by moving the active shaft up and down in the range of the reinforcing section, the folding rod can be moved, and the movement of the folding rod can drive the top support rods to be unfolded upward or folded downward; The top of the air bag is connected with a gas charging and discharging pipe, the gas charging and discharging pipe is connected with the outside through the top valve of the composite cylinder foundation; the air bag is preliminarily fixed in each sub-compartment of the assembled composite cylinder foundation, and after the composite cylinder foundation is transferred from the shore to the ship and each sub-compartment of the composite cylinder foundation is correspondingly positioned with each umbrella-shaped support mechanism, the air bag is inflated to just lift the composite cylinder foundation from the ship plate, so that each sub-compartment of the composite cylinder foundation is protected during transportation.

2. A protection device for transportation and installation of offshore wind power composite cylinder type foundation according to claim 1, characterized in that, Both ends of the bottom support are respectively welded with the column and the ship plate.

3. The offshore wind power composite cylinder type foundation transportation, installation and protection device according to claim 1, characterized in that, The center cylinder is fixedly connected with the column through bolts, and the installation height of the center cylinder can be adjusted by changing the installation positions of the bolts in different bolt holes of the column.

4. The offshore wind power composite cylinder type foundation transportation, installation and protection device according to claim 1, characterized in that, The active shaft is fixedly connected with the reinforcing section through bolts, and the installation height of the active shaft can be adjusted by changing the installation positions of the bolts in different bolt holes of the reinforcing section.

5. The offshore wind power composite cylinder type foundation transportation, installation and protection device according to claim 1, characterized in that, The area where the air bag contacts the umbrella-shaped support mechanism is thickened.

6. A method of construction of a transport, installation and protection device for offshore wind power composite cylinder type foundations according to any of claims 1-5, characterized in that, The process includes the following steps: (1) the assembly of the composite cylinder foundation is completed on the shore, and the air bag is temporarily fixed in each sub-compartment of the composite cylinder foundation; (2) The column of the umbrella-shaped support mechanism is fixedly connected with the ship plate, and the bottom support is fixedly connected with the column and the ship plate respectively; after adjusting the height position of the middle support and the top support on the column, the middle support is elongated, and the top support is opened and elongated, so that the free ends of the middle support rod and the top support rod are respectively away from the inner wall of the compartment of the composite cylinder foundation by a set length; (3) The top valve of the composite cylinder foundation is opened, stable gas is filled into the air bag, the air bag is inflated and contacts the inner wall of the compartment of the composite cylinder foundation; when the composite cylinder foundation just lifts off the ground, the inflation is stopped, at this time the air bag has already played a protective role; (4) The composite cylinder foundation is transported to the sinking site; (5) Before the composite cylinder foundation is lifted, the air bag continues to be inflated until the composite cylinder foundation is lifted by the air bag, so as to reduce the lifting force and ensure the stability of the composite cylinder foundation in the initial stage of lifting; (6) After the composite cylinder foundation is lifted to a sufficient height, the air bag is deflated, and the air bag is removed from the bottom of the composite cylinder foundation, and the subsequent sinking process can be completed.

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