A mounting system for a stationary fan

Abstract

A kind of installation system of fixed fan, the edge of installation ship deck is fixed with pusher, pusher is fixed with cantilever beam, pusher is with rotary guide base and moving guide base, rotary guide base is connected with arc rack, the connecting line of four arc racks forms a circle.Arc rack is connected with moving guide base by electric gear, moving guide base is connected with cantilever beam by pusher hydraulic cylinder.Cantilever beam is with vertical lifting mechanism, and fan is installed by vertical lifting mechanism.The present application is based on existing wind power installation platform, and additional installation platform is not needed for super-power fixed fan, which reduces the comprehensive cost of fan installation and operation, and the crane on the offshore wind turbine installation platform already in service can be satisfied without replacing the crane for the installation of super-power fixed fan, and the existing offshore wind power installation platform is fully utilized, thereby reducing the cost of fixed wind power platform fan installation.

Description

Technical Field

[0001] This invention belongs to the field of marine vessel design and construction, and specifically relates to an installation system for a stationary wind turbine. Background Technology

[0002] As the exploitable areas for wind farms in nearshore shallow waters gradually decrease, while the demand for clean energy continues to increase, high-capacity wind turbines have been promoted both domestically and internationally in recent years to maximize the development and utilization of offshore wind energy. The main characteristics of these high-capacity wind turbines are that the blade diameter reaches hundreds of meters, and the tower height is extremely high; the overall size and weight of the turbine also exceed those of current nearshore shallow water wind turbines.

[0003] Currently, the equipment used for wind power installation in nearshore shallow waters is custom-made for shallow-water wind turbines. The lifting height and capacity of the cranes on the installation platforms cannot meet the requirements for offshore installation of high-power wind turbines. This forces them to face the predicament of being unable to carry out offshore high-power wind turbine installation operations.

[0004] Currently, the installation methods for high-power stationary wind turbines used both domestically and internationally are mainly based on upgrading the installation platform, constructing a new ultra-large wind turbine installation platform, and improving the lifting capacity and installation height of the installation crane. Constructing a new ultra-large wind turbine installation platform requires substantial funding, thus increasing the overall development cost of offshore wind farms.

[0005] On the one hand, existing wind turbine installation platforms will be unable to operate, while on the other hand, new installation platforms need to be built specifically for ultra-large wind turbines, which increases construction costs significantly and results in a large waste of resources. Summary of the Invention

[0006] To solve the above problems, the present invention provides an installation system for a stationary fan, the technical solution of which is as follows:

[0007] An installation system for a fixed wind turbine includes a pushing device fixed to the edge of the deck of the installation vessel. A cantilever beam is fixed on the pushing device. There are four sets of pushing devices, which are arranged in two rows. The two rows of pushing devices are symmetrically arranged. Each pushing device has a rotating guide base and a moving guide base. An arc-shaped rack is fixedly connected to the rotating guide base. The line connecting the four arc-shaped racks forms a circle.

[0008] An arc-shaped rack meshes with an electric gear, which is fixedly connected to the movable guide base. A pushing hydraulic cylinder is installed on the top of the movable guide base, and the cylinder body of the pushing hydraulic cylinder is fixedly connected to the top of the movable guide base.

[0009] The cantilever beam has a box frame and a vertical lifting mechanism. The vertical lifting mechanism is welded to the end of the box frame near the sea surface. Strip-shaped push guide rails are fixed on both sides of the bottom of the box frame. A row of push holes is opened at equal intervals on the push guide rails. A push pin is fixed to the side of the hydraulic rod end of the push hydraulic cylinder. The push pin is inserted into the push hole for fixation.

[0010] The vertical lifting mechanism includes a climbing guide mechanism and a climbing mechanism. The climbing guide mechanism includes a vertically arranged guide frame, which is welded to the end of the cantilever beam. Strip lifting guide rails are welded on both sides of the guide frame, and a row of equally spaced lifting holes are opened on the lifting guide rails.

[0011] The climbing mechanism has a vertically arranged climbing frame with three annular pile-holding arms evenly spaced from top to bottom. Each pile-holding arm has an annular body, which is welded and fixed to the climbing frame. The annular body has one opening and two hinge points. An opening and closing hydraulic cylinder is installed at each hinge point. The cylinder body and hydraulic rod of the opening and closing hydraulic cylinder are located on both sides of the hinge point and connected to the annular body through a bracket. Multiple fixed hydraulic cylinders are evenly spaced along the circumference of the annular body. The cylinder body of the fixed hydraulic cylinder is perpendicular to the annular body and is embedded and fixed inside the annular body. The pile-holding arms hug the wind turbine tower, and the hydraulic rods of the fixed hydraulic cylinders contact the wind turbine tower. Lifting devices are fixed on both sides of the top of the climbing frame.

[0012] The lifting device includes a first hydraulic cylinder and a second hydraulic cylinder. The first hydraulic cylinder has a first cylinder body and a first hydraulic rod, and the second hydraulic cylinder has a second cylinder body and a second hydraulic rod. The first hydraulic cylinder and the second hydraulic cylinder are placed on top of each other. The first cylinder body is fixed to the climbing support through a bracket. One side of the first hydraulic rod is fixedly connected to the second cylinder body, and the other side is fixed with a first telescopic pin. The top of the second hydraulic rod is fixed with a second telescopic pin.

[0013] Furthermore, in the aforementioned installation system for a fixed fan, the hydraulic cylinder of the hydraulic pushing mechanism is placed parallel to the pushing guide rail.

[0014] Furthermore, in the aforementioned installation system for a fixed fan, the connection points between the ring-shaped main body of the ferrule and the climbing support, the openings on the support body, and the two hinge points are arranged at equal intervals along the circumference of the ring-shaped main body.

[0015] Furthermore, in the aforementioned installation system for a fixed fan, two hinge points on the ring-shaped main body of the ferrule are symmetrically arranged.

[0016] Furthermore, in the aforementioned installation system for a fixed fan, the cantilever beam is a frame structure, with its bottom frame slidably connected to the guide base.

[0017] Furthermore, in the aforementioned installation system for a fixed fan, the bottom of the cantilever beam box frame is slidably connected to the movable guide base, the top of the movable guide base is provided with a sliding groove, and the bottom of the cantilever beam box frame is inverted T-shaped, with the bottom of the inverted T-shaped frame inserted into the sliding groove and slidably connected to the movable guide base.

[0018] Furthermore, in the aforementioned installation system for a stationary fan, the arc-shaped rack is placed sideways and meshes with the electric gear.

[0019] Furthermore, in the aforementioned installation system for a fixed wind turbine, a support base is provided at the bottom of the climbing bracket, which supports the bottom of the tower.

[0020] Furthermore, in the aforementioned installation system for a fixed fan, the climbing support is provided with three pile-holding arms from top to bottom, and the hydraulic pushing mechanism of the climbing support is located below the first pile-holding arm at the top.

[0021] Furthermore, in the aforementioned installation system for a fixed fan, a reinforcing rod is fixed between the climbing bracket and the cantilever beam. One end of the reinforcing rod is fixed to the top of the climbing bracket, and the other end is fixed to the middle of the cantilever beam.

[0022] The advantages of this invention are as follows:

[0023] 1. The cantilever beam system can meet the operational needs of offshore wind turbine installation, and solves the problem that as the installation height of high-power wind turbines increases, the boom length and lifting capacity of the platform installation crane must be increased, which would require the corresponding installation platform to be rebuilt, thus increasing the overall cost of offshore wind farm development.

[0024] 2. The installation equipment involved in the installation scheme of this invention is based on the existing wind power installation platform. There is no need to build an additional installation platform for ultra-high power fixed wind turbines, which reduces the overall cost of wind turbine installation and operation.

[0025] 3. After the installation scheme of the present invention, the lifting capacity required during the wind turbine assembly process only needs to meet the weight of the largest component in the wind turbine assembly. The lifting cranes on the offshore wind turbine installation platforms that are currently in service can basically meet this requirement. There is no need to replace the crane to meet the installation of ultra-high power stationary wind turbines, making full use of the existing offshore wind power installation platforms, thereby reducing the wind turbine installation cost of stationary wind power platforms. Attached Figure Description

[0026] Figure 1 This is a side view schematic diagram of the cantilever beam structure of the present invention;

[0027] Figure 2 This is a top view schematic diagram of the cantilever beam structure of the present invention;

[0028] Figure 3This is a rear view schematic diagram of the cantilever beam structure of the present invention;

[0029] Figure 4 This is a partial enlarged view of the connection structure between the rotating guide base and the arc-shaped rack;

[0030] Figure 5 This is a structural schematic diagram of the climbing mechanism for the column-mounted wind turbine tower;

[0031] Figure 6 This is a schematic diagram of the ring-shaped pile-holding arm being opened;

[0032] Figure 7 This is a schematic diagram of the closed loop of the pile-holding arm;

[0033] Figure 8 This is a side view schematic diagram of the overall structure of the wind turbine tower fixing column of the present invention;

[0034] Figure 9 This is a schematic diagram of the overall floating structure of the wind turbine tower fixed by the column of the present invention;

[0035] Figure 10 This is a partially enlarged schematic diagram of the lifting device structure;

[0036] Figure 11 This is a schematic diagram of the assembly of wind turbine towers using this invention;

[0037] Figure 12 This is a schematic diagram showing the completed assembly of the wind turbine;

[0038] Figure 13 This is a diagram illustrating the process of lifting the assembled wind turbine as a whole upwards to above the deck.

[0039] Figure 14 The assembled fan is pushed outwards and moved above the fan base;

[0040] Figure 15 This is a schematic diagram showing the connection between the wind turbine and the wind turbine foundation;

[0041] Figure 16 This is a schematic diagram showing the completed installation and connection of the wind turbine and its foundation;

[0042] The components are: 1-Installation vessel, 2-Pushing device, 3-Rotating guide base, 4-Arc rack, 5-Electric gear, 6-Pushing device, 7-Pushing guide rail, 8-Moving guide base, 9-Climbing support, 10-Cantilever beam, 11-Box frame, 12-Climbing guide mechanism, 13-Climbing mechanism, 14-Lifting hole, 15-Lifting guide rail, 16-Pile clamping arm, 17-Opening and closing hydraulic cylinder, 18-Fixed hydraulic cylinder, 19-Wind turbine tower, 20-First hydraulic cylinder, 21-Second hydraulic cylinder, 22-First telescopic pin, 23-Second telescopic pin, 24-Lifting device, 25-Support base, 26-Lifting crane, 27-Wind turbine foundation, 28-Wind turbine. Detailed Implementation

[0043] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0044] like Figures 1 to 10 As shown, the present invention provides an installation system for a fixed wind turbine. A pushing device is fixed to the edge of the deck of the installation vessel. A cantilever beam is fixed on the pushing device. There are four sets of pushing devices, which form two rows. The two rows of pushing devices are symmetrically arranged. The pushing device has a rotating guide base and a moving guide base. An arc-shaped rack is fixedly connected to the rotating guide base. The line connecting the four arc-shaped racks forms a circle.

[0045] An arc-shaped rack meshes with an electric gear, which is fixedly connected to the movable guide base. A pushing hydraulic cylinder is installed on the top of the movable guide base, and the cylinder body of the pushing hydraulic cylinder is fixedly connected to the top of the movable guide base.

[0046] The cantilever beam has a box frame and a vertical lifting mechanism. The vertical lifting mechanism is welded to the end of the box frame near the sea surface. Strip-shaped push guide rails are fixed on both sides of the bottom of the box frame. A row of push holes is opened at equal intervals on the push guide rails. A push pin is fixed to the side of the hydraulic rod end of the push hydraulic cylinder. The push pin is inserted into the push hole for fixation.

[0047] The vertical lifting mechanism includes a climbing guide mechanism and a climbing mechanism. The climbing guide mechanism includes a vertically arranged guide frame, which is welded to the end of the cantilever beam. Strip lifting guide rails are welded on both sides of the guide frame, and a row of equally spaced lifting holes are opened on the lifting guide rails.

[0048] The climbing mechanism has a vertically arranged climbing frame with three annular pile-holding arms evenly spaced from top to bottom. Each pile-holding arm has an annular body, which is welded and fixed to the climbing frame. The annular body has one opening and two hinge points. An opening and closing hydraulic cylinder is installed at each hinge point. The cylinder body and hydraulic rod of the opening and closing hydraulic cylinder are located on both sides of the hinge point and connected to the annular body through a bracket. Multiple fixed hydraulic cylinders are evenly spaced along the circumference of the annular body. The cylinder body of the fixed hydraulic cylinder is perpendicular to the annular body and is embedded and fixed inside the annular body. The pile-holding arms hug the wind turbine tower, and the hydraulic rods of the fixed hydraulic cylinders contact the wind turbine tower. Lifting devices are fixed on both sides of the top of the climbing frame.

[0049] The lifting device includes a first hydraulic cylinder and a second hydraulic cylinder. The first hydraulic cylinder has a first cylinder body and a first hydraulic rod, and the second hydraulic cylinder has a second cylinder body and a second hydraulic rod. The first hydraulic cylinder and the second hydraulic cylinder are placed on top of each other. The first cylinder body is fixed to the climbing support through a bracket. One side of the first hydraulic rod is fixedly connected to the second cylinder body, and the other side is fixed with a first telescopic pin. The top of the second hydraulic rod is fixed with a second telescopic pin.

[0050] The specific implementation method is as follows:

[0051] The cantilever beam rotating guide base is welded and installed onto the hull of the installation vessel. Then, the arc-shaped rack is installed on the rotating guide base, and the electric gear is installed on the moving guide base. The electric gear is connected to the arc-shaped rack, and the meshing between the electric gear and the arc-shaped rack is adjusted.

[0052] The cantilever beam is dragged into the predetermined position on the moving guide base, and the pushing hydraulic cylinder is installed on the cantilever beam moving guide base. At the same time, the pushing pin of the pushing hydraulic cylinder is connected with the pushing hole. The pushing hydraulic cylinder is adjusted so that it can smoothly move the box-type cantilever beam structure on the ship's deck.

[0053] The overall forward and backward movement of the cantilever beam is achieved through the coordinated operation of four hydraulic cylinders, arranged symmetrically in two rows, each row containing two cylinders positioned one in front of the other. Initially, the hydraulic rods of both cylinders are located within their cylinder bodies and locked to the cantilever beam via pins. When the cantilever beam is pushed towards the sea surface, the rear cylinder is unlocked, and the hydraulic rod of the front cylinder (the one furthest from the sea surface) extends forward, thus moving the cantilever beam forward. When the front cylinder's hydraulic rod reaches its maximum extension, the rear cylinder is locked back into the cantilever beam, and the front cylinder is unlocked. The front cylinder's hydraulic rod retracts into its cylinder body. Then, the front cylinder's hydraulic rod is locked back into the cantilever beam, and the rear cylinder is unlocked. This completes one cycle. This process is repeated until the cantilever beam is pushed to the designated position.

[0054] Alternatively, initially, the hydraulic rods of both pushing hydraulic cylinders are located inside the cylinder body and locked to the cantilever beam via pins. Simultaneously extend the hydraulic rods of both the front and rear pushing hydraulic cylinders, pushing the cantilever beam towards the sea surface. When both the front and rear pushing hydraulic cylinders reach their maximum extension, unlock the rear hydraulic cylinder's rod from the cantilever beam, allow it to retract into the cylinder body, and then lock it back into the cantilever beam. Then, unlock the front hydraulic cylinder's rod from the cantilever beam, allow it to retract into the cylinder body, and then lock it back into the cantilever beam. This completes one cycle. Repeat this process multiple times until the cantilever beam is pushed to the designated position.

[0055] After completing the entire cantilever beam system, the corresponding hydraulic system was comprehensively tested again to ensure that the box-type cantilever beam structure can rotate and extend on the hull structure, the lifting frame structure can move up and down along the end of the cantilever beam, and the pile-holding arm can open and close smoothly.

[0056] like Figure 11-16 As shown, when the wind turbine installation platform, which is equipped with a cantilever beam system for fixed wind turbine assembly, arrives at the wind turbine installation area, the platform's legs are first lowered onto the seabed. Ballasting is then used to ensure that the installation platform stands safely on the seabed.

[0057] Then, after raising the installation platform to a sufficient height above sea level, the lifting structure at the end of the cantilever beam is lowered to sea level to reduce the overall height of the assembled wind turbine.

[0058] The wind turbine's tower, nacelle, hub, blades, etc., are lifted onto the lifting structure wind turbine assembly structure at the end of the cantilever beam by a crane on the installation platform or other platforms for overall wind turbine assembly.

[0059] After the wind turbine is fully assembled, in order to ensure that the bottom of the assembled wind turbine is higher than the fixed wind turbine foundation mounting flange and that the assembled wind turbine can be smoothly pushed to the fixed wind turbine foundation mounting flange position, the assembled wind turbine needs to be lifted to a sufficient height by a lifting structure.

[0060] Activate the cantilever moving hydraulic cylinder to push the cantilever beam and the assembled wind turbine to the wind turbine installation position on the fixed wind turbine foundation. Activate the lifting device of the lifting system; under the push of the lifting device, the lifting frame structure, carrying the assembled wind turbine, is placed above the wind turbine mounting flange on the fixed wind turbine platform. Align the bolt holes on the wind turbine tower flange with the bolt holes on the mounting flange on the fixed wind turbine foundation. Because the fixed wind turbine foundation and the installation platform are fixed to the seabed during wind turbine installation, it is difficult to perfectly align the installation platform with the fixed wind turbine foundation after it is in place. If there is a misalignment problem between the two flange bolt holes, the cantilever beam rotation device needs to be activated to rotate the cantilever beam and adjust the left-right position of the wind turbine on the wind turbine foundation. Simultaneously, activate the cantilever beam telescopic hydraulic cylinder to extend and retract the cantilever beam, adjusting the front-back position of the wind turbine on the wind turbine foundation. This method ensures accurate alignment of the wind turbine tower flange bolt holes with the mounting flange bolt holes on the fixed wind turbine foundation. Then, the wind turbine is placed on the mounting flange of the fixed wind turbine foundation using the lifting device. Finally, the fan was bolted to the fan mounting flange on the fixed fan foundation. Once the connection between the fan and the fixed fan foundation was confirmed, the cantilever beam system could be moved back to the ship's fan assembly area using the cantilever beam transfer cylinder. This successfully completed the offshore installation of the fixed fan.

Claims

1. An installation system for a stationary fan, characterized in that: The installation vessel (1) has a pusher device (2) fixed on the edge of the deck. A cantilever beam (10) is fixed on the pusher device. There are four sets of pushers, which form two rows. The two rows of pushers are symmetrically arranged. The pusher device has a rotating guide base (3) and a moving guide base (8). The rotating guide base is fixedly connected to an arc-shaped rack (4). The line connecting the four arc-shaped racks forms a circle. An electric gear (5) is meshed with an arc-shaped rack and toothed part. The electric gear is fixedly connected to the movable guide base. A push hydraulic cylinder (6) is installed on the top of the movable guide base. The cylinder body of the push hydraulic cylinder is fixedly connected to the top of the movable guide base. The cantilever beam has a box frame (11) and a vertical lifting mechanism. The vertical lifting mechanism is welded to the end of the box frame near the sea surface. The bottom sides of the box frame are fixed with strip-shaped push guide rails (7). A row of push holes are opened at equal intervals on the push guide rails. The hydraulic rod (9) of the push hydraulic cylinder is fixed with a push pin on the side. The push pin is inserted into the push hole for fixation. The vertical lifting mechanism includes a climbing guide mechanism (12) and a climbing mechanism (13). The climbing guide mechanism includes a vertically arranged guide frame, which is welded to the end of the cantilever beam. Strip lifting rails (15) are welded on both sides of the guide frame, and a row of equally spaced lifting holes (14) are opened on the lifting rails. The climbing mechanism has a vertically set climbing support. The climbing support (9) has three ring-shaped pile-holding arms (16) set at equal intervals from top to bottom. The pile-holding arms have a ring body. The ring body is welded and fixed to the climbing support. The ring body has an opening and two hinge points. An opening and closing hydraulic cylinder (17) is set at the hinge point. The cylinder body and hydraulic rod of the opening and closing hydraulic cylinder are located on both sides of the hinge point and are connected to the ring body through the support. Multiple fixed hydraulic cylinders (18) are set at equal intervals along the circumference of the ring body. The cylinder body of the fixed hydraulic cylinder is perpendicular to the ring body and is embedded in the ring body for fixation. The pile-holding arms hug the wind turbine tower (19). The hydraulic rod of the fixed hydraulic cylinder is in contact with the wind turbine tower. Lifting devices (24) are fixed on both sides of the top of the climbing support. The lifting device includes a first hydraulic cylinder (20) and a second hydraulic cylinder (21). The first hydraulic cylinder has a first cylinder body and a first hydraulic rod, and the second hydraulic cylinder has a second cylinder body and a second hydraulic rod. The first hydraulic cylinder and the second hydraulic cylinder are placed on top of each other. The first cylinder body is fixed to the climbing support through a bracket. One side of the first hydraulic rod is fixedly connected to the second cylinder body, and the other side is fixed with a first telescopic pin (22). The top of the second hydraulic rod is fixed with a second telescopic pin (23).

2. The installation system for a stationary fan according to claim 1, characterized in that: The hydraulic cylinder for pushing is placed parallel to the guide rail for pushing.

3. The installation system for a stationary fan according to claim 1, characterized in that: The connection points between the ring-shaped main body of the pile-holding arm and the climbing support, the openings on the ring-shaped main body, and the two hinge points are set at equal intervals along the circumference of the ring-shaped main body.

4. The installation system for a stationary fan according to claim 1, characterized in that: The two hinge points on the ring-shaped main body of the pile-holding arm are symmetrically arranged.

5. The installation system for a stationary fan according to claim 1, characterized in that: The cantilever beam is a frame structure, with its bottom frame slidably connected to the guide base.

6. The installation system for a stationary fan according to claim 5, characterized in that: The bottom of the cantilever beam box frame is slidably connected to the movable guide base. The top of the movable guide base is provided with a sliding groove. The bottom of the cantilever beam box frame is inverted T-shaped, and the bottom of the inverted T-shaped frame is inserted into the sliding groove and slidably connected to the movable guide base.

7. The installation system for a stationary fan according to claim 1, characterized in that: The arc-shaped rack is placed on its side and meshes with the electric gear.

8. The installation system for a stationary fan according to claim 1, characterized in that: The bottom of the climbing support is provided with a support base (25), which supports the bottom of the tower.

9. The installation system for a stationary fan according to claim 1, characterized in that: The climbing frame has three anchor arms from top to bottom, and the hydraulic pushing mechanism of the climbing frame is located below the first anchor arm at the top.

10. The installation system for a stationary fan according to claim 1, characterized in that: A reinforcing rod is fixed between the climbing frame and the cantilever beam. One end of the reinforcing rod is fixed to the top of the climbing frame, and the other end is fixed to the middle of the cantilever beam.

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