Construction method and construction device for segmented installation of wind driven generator

Abstract

The invention discloses a construction method and a construction device for segmented installation of a wind driven generator, and relates to the technical field of wind power generation, the construction method comprises the following steps: installing a cylindrical combined frame, a bearing track beam, a crane beam and hoisting equipment; the columnar body combined frame is lifted to continuously rise; in the continuous lifting process, the hoisting equipment is matched with the crane beam to continuously stack and install the multiple wind power barrels until all the wind power barrels are installed; installing a fan main machine; fan blades are installed for hoisting and rotating hole alignment; and dismounting the device to finish installation. The construction device comprises at least four columnar combined frames; the at least two bearing track beams are erected at the top of the cylindrical combined frame in parallel; and the at least two crane beams are erected on the bearing track beams, and one crane beam is further provided with a group of cantilever cranes. The structure has the advantages of being light in weight, convenient to construct, capable of resisting storm waves, high in installation stability, short in installation period, low in installation cost and wide in application range.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a construction method and a construction device for segmented installation of a wind power generator. Background Art

[0002] As a new energy source created by mankind, wind power generation has developed rapidly in recent years. With the advancement of technology, wind turbines are becoming larger and taller, especially in the offshore field, where large wind power generation equipment is being built and installed. However, there are a series of problems in the process of installing these large wind power generation equipment.

[0003] On the one hand, the installation requirements of wind turbines are extremely high, and zero tolerance must be ensured. In order to install these large equipment, larger installation ships are specially built. These installation ships are equipped with tall lifting equipment with great power, which can complete the lifting task of wind turbines. These lifting equipment mainly solve the problem of the uncontrollable ability of the hull to be affected by surges during the installation process. And because they are special equipment produced for wind power construction, their manufacturing and rental costs are very high. However, when each wind power is built, the installation ship needs to go back and forth between the port and the project pile foundation to pick up the parts in batches. Due to the high cost and rental fee of the crane, in order to control the construction cost of the project during construction, the number of cranes on the construction site is limited. Usually a wind farm consists of dozens of wind turbines, and all wind turbines need to be fully installed before they can be connected to the grid. This limits the batch construction of wind power projects, limits the installation efficiency, and will cause delays in the total construction period.

[0004] On the other hand, during the installation process, although multiple pile foundation projects can be started at the same time, the stages of the installation project must be carried out one by one, which leads to a long installation cycle. For example, in the wind farm project in Zhoushan area, due to the high surge, the lifting ship could not put the segmented equipment in place for more than ten hours. Finally, the whole set of installation had to be carried out on land, and then hoisted to the ship by a large ship, and hoisted by a huge ship crane and a specially designed induced positioning device under suitable meteorological conditions and wave currents.

[0005] In addition, not only at sea, but also on land, wind power projects face constraints in the installation process. Huge cranes need to build high-demand working surfaces at each base. When the towering boom is lifted to a high place, even a small shake will bring the risk of being magnified. This not only places high requirements on the road requirements for the transfer site and the foundation of the installation site, but also cannot start work on several bases at the same time, which greatly hinders the progress of the project. Moreover, the development of wind power has been restricted in the installation process. At present, the hoisting of wind turbines generally adopts the traditional single-point hoisting technology. When hoisting high loose towers or cabin components, single-point hoisting easily puts the hoisting body in a pendulum state, resulting in insufficient dynamic stability. In contrast, multi-point hoisting technology (such as four-point hoisting) can form a stable diagonal mechanical balance during the hoisting process through the synergy of multiple hoisting points, effectively suppressing the swing. For example, the four-point hoisting system is widely used in the field of container hoisting. However, the components of wind turbines are large in size and unevenly distributed in weight, and the existing four-point hoisting technology is insufficient in the application of wind power.

[0006] More importantly, although the installation vessel has achieved the stability of the hull, it cannot get rid of the defect of single-point lifting by a towering crane. And with the increasing demand for deep-sea wind power development, the capacity of the installation vessel is far from meeting the development needs. The support legs of the installation vessel cannot reach the seabed 50 meters below, and even if they do, they cannot resist the lateral impact of the ocean current. At the same time, the bearing force of the coast on the support legs will produce uneven settlement due to the change of upper load, so the installation vessel can only stop in shallow waters.

[0007] A Chinese invention patent with the existing patent publication number CN 107218179 A discloses a construction method for split installation of offshore wind turbines, which uses an auxiliary platform to lift the wind turbine split onto the wind turbine foundation to achieve split installation of the wind turbine, effectively reducing the impact of wind and waves on wind turbine installation and construction, and improving installation efficiency. Although this technical solution proposes to use an auxiliary platform to complete the split installation of wind turbines to reduce the impact of wind and waves on construction, this construction method still involves the lifting of the wind turbine split, which involves the use of lifting equipment, that is, there are still problems of high cost and long installation period.

[0008] In summary, wind power generation faces many problems in the installation process, and new technologies are urgently needed to solve these problems and promote the further development of wind power generation technology. Summary of the invention

[0009] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a construction method and a construction device for segmented installation of a wind turbine.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] A construction method for installing a wind turbine in sections comprises the following steps:

[0012] Step S1, fixing at least four columnar assembly frames having one layer of original column frames on the installed wind power foundation platform and enclosing them to form a frame-shaped structure, and installing at least two load-bearing rail beams on the lifting frame of the columnar assembly frame, and then installing at least two traveling beams on the load-bearing rail beams, and then installing lifting equipment on each traveling beam;

[0013] Step S2, the lifting frame is lifted to form a hollow space on the upper part of the original column frame, and a new module column frame is filled into the hollow space and fixed on the top of the original bottom column frame. According to the required height of the work, the new module column frame is repeatedly filled to continuously raise the height;

[0014] Step S3, during the continuous raising of the column frame, the lifting equipment cooperates with the traveling beam to continuously stack and install a plurality of wind turbine cylinders in the frame-shaped structure of the columnar assembly frame until all wind turbine cylinders are installed;

[0015] Step S4: The lifting equipment cooperates with the traveling beam to lift the wind turbine main unit to the top of the wind turbine cylinder at the top layer and install it;

[0016] Step S5, the cantilever crane on the traveling beam cooperates with the ship crane to lift and rotate the fan blade to align the holes until the fan blade is installed on the fan main engine;

[0017] Step S6: The lifting frame is continuously lowered and the column frames are disassembled in sequence from high to low until the columnar assembly frame is completely disassembled, thereby completing the segmented installation of the wind turbine.

[0018] Furthermore, in the step S1, a transport ship and a ship crane are used to move the load-bearing rail beam and the traveling beam into the frame structure for hoisting in the frame structure.

[0019] Furthermore, in the steps S2 and S3, in the process of the column frame and the wind turbine cylinder body being continuously raised, the climbing frame is used to continuously climb and fix the adjacent column frames and the wind turbine cylinder body and the column frame.

[0020] Furthermore, in step S4, when the lifting equipment lifts the wind turbine main unit to a position above the topmost wind turbine cylinder, the wind turbine main unit and the adjacent columns are connected by fastening cables, and the fastening cables assist the traveling beams to drive the wind turbine main unit to move to the topmost wind turbine cylinder.

[0021] Furthermore, in step S4, the fastening cables extend from the column frame and are connected to the four sides of the wind turbine main unit in different directions.

[0022] Furthermore, in step S5, when the wind blade is lifted vertically to a low altitude, at least two fastening cables are extended from the column frame to clamp the lower part of the wind blade, and the mechanical working arm on the ship crane is used to assist the wind blade to rotate in the air, and the laser aligner is used to position the holes.

[0023] Furthermore, in step S6, during the disassembly of the columnar assembly frame, the fastening ropes and the climbing frame are disassembled simultaneously.

[0024] A construction device for installing a wind turbine in sections, using the construction method for installing a wind turbine in sections, is used to install a wind turbine cylinder, a wind turbine main unit, and a wind blade of the wind turbine in sections and in sequence, comprising:

[0025] At least four columnar assembly frames, each of which includes a plurality of stacked columns and a lifting frame that can be raised on the columns, wherein the bottom end of the column frame at the bottom layer is fixed on the wind power foundation platform, and the lifting frame is installed on the outer ring of the column frame, and the columnar assembly frames are enclosed to form a frame-shaped structure;

[0026] At least two load-bearing rail beams are installed in parallel on the top of the lifting frame;

[0027] At least two traveling beams are erected on the load-bearing rail beam, and each of the traveling beams is equipped with a lifting device, one of the traveling beams is also equipped with a set of cantilever cranes, and the traveling beam can move laterally along the load-bearing rail beam.

[0028] Furthermore, it also includes a climbing frame, which is climbed and fixed between the wind turbine cylinder body and the column frame and between the column frames of every two adjacent columnar assembly frames.

[0029] Furthermore, a triangular fixed structure is formed between every two adjacent climbing frames and the column frame in the vertical direction.

[0030] Furthermore, it also includes a fastening cable, which is connected between the fan main body and the column frame, and the fastening cables are arranged in different directions around the fan main body to connect the column frame; the fastening lock is also connected between the column frame and the fan blade, and the fastening cable is connected to the anti-collision pad at the bottom of the fan blade.

[0031] Furthermore, the column frame connected to the fastening lock is cut with a C-shaped opening, one end of the fastening cable is a spherical head, and is connected through the spherical connection and slides in the C-shaped opening, the other end is connected to the fan main unit or fan blades, and the fastening cable is connected to a remote control device to achieve remote control tightening.

[0032] Furthermore, every two of the column frames are connected in the vertical direction by means of sleeve connection.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] In the present invention, a columnar assembly frame is continuously lifted to raise the column frame, and the wind turbine is installed in sections during the continuous lifting process, and a traveling beam is used to replace the traditional lifting equipment. The columnar assembly frame adopts a modular assembly structure, and the transportation volume is small, which greatly reduces the cost of long-distance delivery. During installation, it is stacked and raised layer by layer, and no large-scale lifting equipment is required, which reduces the demand for counterweights, makes the overall structure lightweight, and reduces manufacturing costs. In addition, a climbing frame and a fastening lock are used to form a stable fixed structure with wind and wave resistance, which can adapt to complex marine environments, especially deep sea areas, and the overall stacking and installation are achieved. The installation period of a single wind turbine is significantly shortened, the installation efficiency is significantly improved, and the installation cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the original column frame, lifting frame, load-bearing rail beam, traveling beam, lifting equipment, and cantilever crane in the columnar assembly frame in the embodiment of the present invention after installation;

[0036] Figure 2 It is a structural schematic diagram of the lifting frame when it is lifted on the original column frame in an embodiment of the present invention;

[0037] Figure 3 It is a structural schematic diagram of the embodiment of the present invention in which a new module column frame is filled into the empty space formed by the lifting frame after the lifting frame is lifted to complete the stacking and installation of the column frames;

[0038] Figure 4 It is a structural schematic diagram of the first section of the wind turbine cylinder body installed in the frame-shaped structure in an embodiment of the present invention;

[0039] Figure 5 It is a structural schematic diagram of the column frames continuing to be stacked after the first section of the wind turbine cylinder is installed in the embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the state of the second section of the wind turbine cylinder body when it is installed in an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure after all wind turbine cylinders are installed in an embodiment of the present invention;

[0042] Figure 8 This is a schematic diagram of the structure of the fan main engine after hoisting in an embodiment of the present invention;

[0043] Fig. 9 This is a schematic diagram of the structure of the fan host after installation in an embodiment of the present invention;

[0044] Fig.10 This is a schematic diagram of the structure after the fan blades are hoisted in an embodiment of the present invention;

[0045] Fig.11This is a schematic diagram of the structure after the fan blades are installed in an embodiment of the present invention;

[0046] Fig.12 It is a schematic diagram of the structure of the columnar assembly frame after partial disassembly after installation in the embodiment of the present invention;

[0047] Fig.13 It is a schematic diagram of the structure after the construction device is completely disassembled after installation is completed in an embodiment of the present invention.

[0048] In the figure: 1, columnar assembly frame; 11, column frame; 12, lifting frame; 2, load-bearing track beam; 3, traveling beam; 4, cantilever crane; 5, climbing frame; 6, fastening rope;

[0049] 100. Wind turbine cylinder; 200. Wind turbine main engine; 300. Wind blades. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] Example

[0052] A construction device for installing a wind turbine in sections, which is used to install a wind turbine cylinder 100, a wind turbine main unit 200, and a wind blade 300 of the wind turbine in sections and in sequence. Figure 1 , Figure 5 , Figure 8 As shown, it includes a columnar assembly frame 1, a load-bearing rail beam 2 installed on the columnar assembly frame 1, a traveling beam 3 erected on the load-bearing rail beam 2, a lifting device and a cantilever crane 4 installed on the traveling beam 3, a climbing frame 5, and a fastening cable 6. Specifically, as Figure 1-11 As shown:

[0053] There are six columnar assembly frames 1, each of which includes several layers of stacked column frames 11 and a lifting frame 12 that can be raised on the column frames 11, wherein the number of layers and the stacking height of the column frames 11 are determined according to actual conditions, and preferably the total height of the column frames 11 is higher than the total height of the wind turbine; in the vertical direction, every two column frames 11 are connected by sleeve connection. The bottom end of the bottom column frame 11 is fixed on a wind power foundation platform (not shown in the figure), which is built before the construction of the wind turbine, and is the foundation support body of the construction device of this application.

[0054] The lifting frame 12 is installed on the outer ring of the column frame 11. The column frame 11 and the lifting frame 12 are assembled from steel pipes, which are low-cost, simple and quick to manufacture. They can be assembled in one piece by the original factory, or assembled on site in a single piece. In this way, the time difference of lifting during the assembly process can be used to assemble the next batch of modules on site, reducing the transportation volume, and the installation components of the assembly frame can be manufactured according to the size of the container, which is convenient for long-distance delivery.

[0055] The columnar assembly frame 1 is enclosed to form a frame-shaped structure. The column frame 11 and the lifting frame 12 are preferably rectangular frame structures, wherein the lifting frame 12 is driven by a hydraulic device such as a hydraulic cylinder to achieve lifting.

[0056] Two load-bearing rail beams 2 are provided, which are erected in parallel on the top of the lifting frame 12; preferably, each load-bearing rail beam 2 is erected on the top of each three adjacent lifting frames 12 arranged in parallel. As the lifting frame 12 is continuously raised, the load-bearing rail beam 2 is driven to be continuously raised.

[0057] Two traveling beams 3 are provided, which are erected on the load-bearing rail beam 2. The traveling beams 3 can move horizontally along the load-bearing rail beam 2 to meet the lateral transfer of the components to be installed during the installation of the wind turbine. Using the traveling beam 3 to achieve the transfer of components during the installation process can not only reduce the counterweight, but also effectively avoid the shaking caused by external natural factors such as wind and waves during the transfer process, and the installation stability is stronger.

[0058] In addition, the traveling beam 3 is also provided with two tracks that can be extended forward and are inclined by cables extending from the column frame 11 (not shown in the figure), which can achieve height extension and retraction to cope with the height changes of the equipment caused by surge changes, so that the wind turbine generator assembly can be moved flat to the installation platform to avoid the shaking of the hanging board during high-altitude lifting.

[0059] Each traveling beam 3 is equipped with a lifting device (not shown in the figure). The lifting device is implemented by a winch, which is used to lift the components to be installed in the wind turbine. The lifting winch can adopt point-by-point lifting, that is, the lifting points are located at different points of the components to be lifted to ensure the stability during the lifting process, just like a container crane, which adopts four-point lifting to stably lift heavy objects, overcoming the problem of insufficient dynamic stability of single-point lifting in the field of wind power installation.

[0060] A group of cantilever hangers 4 are also installed on one of the traveling beams 3. The cantilever hangers 4 are preferably located at the end of one of the traveling beams 3 to facilitate the suspension of the fan blades 300.

[0061] The climbing frame 5 is climbed and fixed between the wind turbine cylinder body 100 and the column frame 11 and between the column frames 11 of each adjacent two columnar assembly frames 1. Figure 5-11. Preferably, a triangular fixing structure is formed between every two adjacent climbing frames 5 and the column frame 11 in the vertical direction, and the triangular fixing structure can make the climbing more stable. The use of the climbing frame 5 ensures the connection stability between the column frames 11 and the column frames 11 during the installation process, as well as the connection stability of the wind turbine cylinder body 100, which helps to resist natural factors such as wind and waves; and because the column frame 11 has been climbed and fixed to the installed wind turbine cylinder body 100 during the rising process, no matter how high the construction height of the wind turbine is, the traveling beam 3 can also stably reach the same height as the wind turbine and work above this height.

[0062] See Figure 8 The fastening rope 6 is connected between the fan main unit 200 and the column frame 11, and fastening ropes 6 are provided in different directions around the fan main unit 200 to connect the column frame 11. The fastening lock is also connected between the column frame 11 and the fan blade 300, and the fastening rope 6 is connected to the anti-collision cushion at the bottom of the fan blade 300 (not shown in the figure) to prevent the fan blade 300 from fluttering in the wind. The use of the fastening rope 6 can also play a role in resisting surges, making the entire construction device stable and controllable.

[0063] More specifically, the column frame 11 connected to the fastening lock is cut with a C-shaped opening, one end of the fastening cable 6 is a spherical head, and is connected and slides in the C-shaped opening through a spherical connection, and the other end is connected to the fan main unit 200 or the fan blade 300, and the fastening cable 6 is connected to a remote control device to achieve remote control tensioning (not shown in the figure). The remote control device is a prior art, and this application does not involve improvements to it itself, so it will not be repeated here.

[0064] In addition, the construction device is also used in conjunction with a transport ship, which has a ship crane, which includes existing equipment such as lifting equipment, mechanical working hands, and laser aligners. When the transport ship is working, it docks next to the wind power foundation platform. As a prior art, the transport ship does not involve improvements to its own structure in this application, and will not be described in detail.

[0065] Since the hoisting device used in the construction device of this embodiment is in the form of a crane, the crane beam 3 replaces the traditional lifting equipment, and no counterweight is required. The manufacturing structure of the crane is simple and lightweight. During the lifting process, the fastening cable 6 extends from the column frame 11 to help stabilize the level, thereby achieving a more stable lifting state, which has obvious advantages over traditional lifting equipment.

[0066] This embodiment also provides a construction method for installing a wind turbine in sections, which is implemented by using a construction device for installing a wind turbine in sections provided in this embodiment, and specifically includes the following steps:

[0067] Step S1, fix six columnar assembly frames 1 having one layer of original column frames 11 and lifting frames 12 on the installed wind power foundation platform and enclose them to form a frame-shaped structure, and install two parallel load-bearing rail beams 2 on the lifting frames 12 of the columnar assembly frames 1, and then install two traveling beams 3 that can move horizontally on the load-bearing rail beams 2 on the load-bearing rail beams 2, and then install lifting equipment on each traveling beam 3; Figure 1 shown.

[0068] Step S2, the lifting frame 12 is lifted and forms a hollow space on the upper part of the original column frame 11, and the new module column frame 11 is filled into the hollow space and fixed on the top of the original bottom column frame 11. According to the required height of the work, the new module column frame 11 is repeatedly filled to continuously raise the columnar assembly frame 1; Figure 2-3 shown.

[0069] Step S3, during the continuous raising of the column frame 11, the lifting equipment cooperates with the traveling beam 3 to continuously stack and install a plurality of wind turbine cylinders 100 in the frame structure of the columnar assembly frame 1 until all wind turbine cylinders 100 are installed; Figure 4-7 shown.

[0070] Step S4: The lifting equipment cooperates with the traveling beam 3 to lift the wind turbine main unit 200 to the top of the wind turbine cylinder 100 at the top layer and install it; Figure 8-9 shown.

[0071] Step S5, the cantilever crane 4 on the traveling beam 3 cooperates with the ship crane to lift and rotate the fan blade 300 until the fan blade 300 is installed on the fan main unit 200; Figure 10-11 shown.

[0072] Step S6, the lifting frame 12 is continuously lowered and the column frame 11 is disassembled in sequence from high to low until the columnar assembly frame 1 is completely disassembled, thereby completing the installation of the wind turbine; Figure 12-13 shown.

[0073] More specifically:

[0074] In step S1, a transport ship and a ship crane on the transport ship are used to move the load-bearing rail beam 2 and the traveling beam 3 into the frame structure for hoisting in the frame structure.

[0075] In steps S2 and S3, as the column frames 11 and the wind turbine cylinder body 100 are continuously raised, the climbing frame 5 is used to continuously climb and fix the adjacent column frames 11 and the wind turbine cylinder body 100 and the column frames 11.

[0076] And, more specifically, when the column assembly frame 1 is raised to a height higher than the first section of the wind turbine cylinder 100, the lifting equipment can lift the first section of the wind turbine cylinder 100, and then the traveling beam 3 drives the wind turbine cylinder 100 to move horizontally to the preset installation position, and then the climbing frame 5 is used to climb and fix the installed section of the wind turbine cylinder 100, and at the same time, the column frame 11 at the current height that has been erected is synchronously climbed and fixed by the climbing frame 5; then when the column assembly frame 1 continues to rise to a height higher than the second section of the wind turbine cylinder 100, repeat the above steps, install the second section of the wind turbine cylinder 100 on the first section of the wind turbine cylinder 100, and also fix it with the climbing frame 5; repeat the steps until all the wind turbine cylinders 100 are installed.

[0077] In step S4, when the lifting equipment lifts the wind turbine mainframe 200 to the position above the topmost wind turbine cylinder 100, the wind turbine mainframe 200 and the adjacent column frame 11 are connected by the fastening cable 6, and the fastening cable 6 assists the traveling beam 3 to drive the wind turbine mainframe 200 to move horizontally to the topmost wind turbine cylinder 100. Among them, the fastening cable 6 extends from the column frame 11 and is connected to the four sides of the wind turbine mainframe 200 in different directions, and four-point lifting is performed. The fastening cable 6 can be remotely controlled by the remote control device to achieve tension and relaxation. When the wind turbine mainframe 200 moves horizontally, the fastening lock is controlled to move and change, and the two fastening cables 6 at the position begin to join and tighten to ensure stable positioning.

[0078] In step S5, when the wind blade 300 is lifted vertically to a low altitude, at least two fastening cables 6 are extended from the column frame 11 to clamp the lower part of the wind blade 300 to prevent the wind blade 300 from drifting with the wind. The mechanical working arm on the ship crane assists the rotation of the wind blade 300 in the air, and the laser aligner is used to accurately position the holes, thereby realizing combined aerial assembly, which helps to save installation time.

[0079] In step S6, during the disassembly of the columnar assembly frame 1, the fastening rope 6 and the climbing frame 5 are disassembled simultaneously.

[0080] In addition, in this embodiment, AI control can also be used to coordinate with the drone to rise and inspect during the installation process to ensure safety.

[0081] The wind turbine construction device and construction method provided in this embodiment are not only applicable to the installation of wind turbines on land, but also applicable to the installation of wind turbines in shallow sea areas and even deep sea areas due to their strong wind and wave resistance capabilities.

[0082] Comparative Example

[0083] The existing installation method of installing a wind turbine using an installation ship is compared with the construction method and construction device for installing a wind turbine in sections provided in this embodiment in terms of economic benefits, time benefits, market investment funds and derivative benefits, and the results are as follows:

[0084] First, economic benefits:

[0085] The current installation method of wind turbines is to use installation vessels: the working task of the installation vessel is to receive the equipment from the shore and install it on the vessel, then transport it to the installation site, disassemble it, and then hoist it into place. On average, a transport ship takes three days to complete the transportation and installation, and its economic benefits are 1.45-2.5 million yuan / day.

[0086] This embodiment provides a construction method and a construction device for the segmented installation of a wind turbine: Taking the Zhoushan project as an example, the installation fee accounts for 6.6% of the total investment, while the investment in the installation vessel accounts for 22%. The economic benefit of this embodiment is 3 million yuan / month, which greatly reduces the dynamic capital amount.

[0087] Second, time efficiency:

[0088] The existing installation method of wind turbines is to use installation vessels: at each installation point, due to the different seabed soil and subsequent uneven sinking, the load-bearing columns of the installation vessel extended into the seabed, and the holding force adjustment time was long, resulting in 63 wind turbines being installed in 26 months, with an average of 2.4 turbines installed per month.

[0089] The construction method and construction device for the segmented installation of wind turbines provided in this embodiment are as follows: since the columnar assembly frame can be raised quickly and put into place quickly, and the columnar assembly frame enters the installation area at the same time, the assembly frame transport ship docks at both sides of the foundation platform and supplies the assembly frame at the same time, and is quickly combined with the prefabricated foundation platform in place, so the preparation time is short. Currently, 6 wind turbines can be installed per month. If the installation of 6 groups of installation points is started at the same time, 63 wind turbines can be completed within 2 months.

[0090] Third, market investment funds:

[0091] The current installation method of wind turbines is to use installation vessels, which costs RMB 2.8 billion per year.

[0092] The construction method and construction device for the segmented installation of wind turbines provided in this embodiment cost RMB 3 million per group, RMB 18 million for six groups, and RMB 864 million for the installation of 288 units per year.

[0093] Fourth, derivative benefits:

[0094] The construction method and construction device for the segmented installation of wind turbines provided in this embodiment: the load-bearing installation platform composed of columnar assembly frames can be used as a carrier for maintenance equipment and a charging and working platform for electric helicopters in the future; it can also assist in offshore maintenance of wind turbines, assist in maintenance and replacement of equipment, reduce maintenance costs and greatly extend the service life of wind turbines. In addition, since the installation cost of wind power generation has dropped by 16%, it can also provide base power support, storage, refrigeration and life support as well as transportation platforms for deep-sea ranches; it can also develop seawater hydrogen production projects to save fresh water.

[0095] From the above, it can be seen that the wind turbine construction method and construction device provided in this embodiment have obvious advantages in economic benefits, time benefits, market investment funds and derivative benefits over the existing window installation method. It has the significant advantages of being light, stable, fast and low-investment, and is suitable for deep sea, and its scope of application is also expanded.

[0096] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A construction method for installing a wind turbine in sections, characterized in that: The following steps are involved: Step S1, fixing at least four columnar assembly frames having one layer of original column frames on the installed wind power foundation platform and enclosing them to form a frame-shaped structure, and installing at least two load-bearing rail beams on the lifting frame of the columnar assembly frame, and then installing at least two traveling beams on the load-bearing rail beams, and then installing lifting equipment on each traveling beam; Step S2, the lifting frame is lifted to form a hollow space on the upper part of the original column frame, and a new module column frame is filled into the hollow space and fixed on the top of the original bottom column frame. According to the required height of the work, the new module column frame is repeatedly filled to continuously raise the height; Step S3, during the continuous raising of the column frame, the lifting equipment cooperates with the traveling beam to continuously stack and install a plurality of wind turbine cylinders in the frame-shaped structure of the columnar assembly frame until all wind turbine cylinders are installed; Step S4: The lifting equipment cooperates with the traveling beam to lift the wind turbine main unit to the top of the wind turbine cylinder at the top layer and install it; Step S5, the cantilever crane on the traveling beam cooperates with the ship crane to lift and rotate the fan blade to align the holes until the fan blade is installed on the fan main engine; Step S6: The lifting frame is continuously lowered and the column frames are disassembled in sequence from high to low until the columnar assembly frame is completely disassembled, thereby completing the segmented installation of the wind turbine.

2. The construction method for installing a wind turbine in sections according to claim 1 is characterized in that: In the step S1, a transport ship and a ship crane are used to move the load-bearing rail beam and the traveling beam into the frame structure for hoisting in the frame structure.

3. The construction method for installing a wind turbine in sections according to claim 1 is characterized in that: In the steps S2 and S3, in the process of the column frame and the wind turbine cylinder body being continuously raised, the climbing frame is used to continuously climb and fix the adjacent column frames and the wind turbine cylinder body and the column frame.

4. The construction method for installing a wind turbine in sections according to claim 3 is characterized in that: In step S4, when the lifting equipment lifts the wind turbine mainframe to a position above the topmost wind turbine cylinder, the wind turbine mainframe and the adjacent columns are connected by fastening cables, and the fastening cables assist the traveling beams to drive the wind turbine mainframe to move to the topmost wind turbine cylinder.

5. The construction method for installing a wind turbine in sections according to claim 4 is characterized in that: In step S4, the fastening cables extend from the column frame and are connected to the four sides of the fan main unit in different directions.

6. The construction method for installing a wind turbine in sections according to claim 4 or 5, characterized in that: In step S5, when the wind blade is lifted vertically to a low altitude, at least two fastening cables are extended from the column frame to clamp the lower part of the wind blade, and the mechanical working arm on the ship crane assists the wind blade to rotate in the air, and the laser aligner is used to position and align the holes.

7. The construction method for installing a wind turbine in sections according to claim 6 is characterized in that: In the step S6, during the disassembly of the columnar assembly frame, the fastening rope and the climbing frame are disassembled simultaneously.

8. A construction device for installing a wind turbine in sections, characterized in that: The construction method for installing a wind turbine in sections as described in claims 1 to 7 is used to install the wind turbine cylinder, the wind turbine main engine, and the wind blades of the wind turbine in sections and in sequence, comprising: At least four columnar assembly frames, each of which includes a plurality of stacked columns and a lifting frame that can be raised on the columns, wherein the bottom end of the column frame at the bottom layer is fixed on the wind power foundation platform, and the lifting frame is installed on the outer ring of the column frame, and the columnar assembly frames are enclosed to form a frame-shaped structure; At least two load-bearing rail beams are installed in parallel on the top of the lifting frame; At least two traveling beams are erected on the load-bearing rail beam, and each of the traveling beams is equipped with a lifting device, one of the traveling beams is also equipped with a set of cantilever cranes, and the traveling beam can move laterally along the load-bearing rail beam.

9. The construction device for installing a wind turbine in sections according to claim 8, characterized in that: It also includes a climbing frame, which is climbed and fixed between the wind turbine cylinder body and the column frame and between the column frames of every two adjacent columnar body assembly frames.

10. The construction device for installing a wind turbine in sections according to claim 8, characterized in that: It also includes a fastening cable, which is connected between the fan main body and the column frame, and the fastening cables are arranged in different directions around the fan main body to connect the column frame; the fastening lock is also connected between the column frame and the fan blade, and the fastening cable is connected to the anti-collision pad at the bottom of the fan blade.

11. The construction device for installing a wind turbine in sections according to claim 10, characterized in that: The column frame connected to the fastening lock is cut with a C-shaped opening, one end of the fastening cable is a spherical head, and is connected and slides in the C-shaped opening through the spherical connection, and the other end is connected to the fan main unit or fan blades, and the fastening cable is connected to the remote control device to achieve remote control tightening.

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