Installation system for a floating wind turbine

Abstract

An installation system for a floating wind turbine includes two rows of guide bases fixed on the deck of the installation vessel. A cantilever beam is located on the guide bases, and the cantilever beam has a box-shaped frame. A vertical lifting mechanism is fixed at the end of the box-shaped frame closest to the seawater. The box-shaped frame is connected to the guide bases via a hydraulic pushing mechanism. The vertical lifting mechanism includes a climbing guide mechanism and a climbing mechanism, which can move up and down on the climbing guide mechanism. This invention solves the problem of wind turbine installation on floating wind power platforms being impossible at the dock due to the water depth. The installation equipment involved in the installation scheme is based on existing wind power installation platforms, eliminating the need to construct additional installation platforms for deep-water floating wind power platforms, thus reducing the overall cost of wind turbine installation and operation. The cranes on currently operational offshore wind turbine installation platforms meet the installation requirements, eliminating the need for additional crane installation or replacement, thereby reducing the cost of wind turbine installation on floating wind power platforms.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of large gantry cranes, and particularly relates to a large gantry crane for offshore shipbuilding. BACKGROUND

[0002] With the gradual decrease of the developable area of offshore shallow sea wind farms and the increasing demand for clean energy, deep-sea floating wind platforms have emerged, and have been promoted abroad in recent years. The main feature of deep-sea floating wind platforms is that the power of the wind turbines is large, and the diameter of the blades of the wind turbines reaches hundreds of meters. In order to avoid the wind turbine blades from scratching the sea surface when rotating and causing damage to the wind turbine, the height of the wind turbine tower must be sufficient. At the same time, the overall size and weight of the wind turbine also exceed those of the wind turbines in offshore shallow sea areas. At present, the equipment used for offshore shallow sea wind power installation is tailor-made for shallow sea wind turbines, and the lifting height and lifting capacity of the cranes on the installation platform cannot meet the requirements of wind turbine installation in deep water areas.

[0003] There are two methods for installing floating wind turbines that have been applied at home and abroad. One is to use super-large cranes on the shore to install the wind turbines of the floating wind platform after the floating wind platform is launched at the port. The biggest problem with this scheme is that the draft of the platform is very large after the wind turbine is installed, and it is difficult to find a suitable water depth port in China. Therefore, this scheme is difficult to be applied to the wind turbine installation of domestic floating wind platforms.

[0004] The other is to select a temporary installation area at sea and install the wind turbine on the floating wind platform through a super-large floating crane platform. Because the operation cost of the super-large floating crane platform is high, the corresponding rent is also very high, which will greatly increase the construction and operation cost of the floating wind platform.

[0005] In addition to the above two installation methods, some users have begun to consider building a special self-elevating installation platform for deep-sea floating wind platforms. The platform needs to meet the installation needs of the floating wind platform, and the lifting capacity and height of the crane need to be increased. A corresponding installation platform needs to be specially built, and the cranes that have been built for offshore wind power installation platforms are forced to be idle because they cannot meet the above installation requirements, causing waste of resources. SUMMARY

[0006] To solve the above problems, the present application provides an installation system for floating wind turbines, which adopts the technical scheme of:

[0007] The installation system of a floating wind turbine is characterized in that two rows of guide bases are fixed on the deck of an installation ship, a cantilever beam is arranged on the guide bases, the cantilever beam is provided with a box-shaped frame, a vertical lifting mechanism is fixed at the end of the box-shaped frame close to seawater, strip-shaped moving guide rails are fixed at the bottom of the box-shaped frame, a row of moving holes are arranged at equal intervals on the moving guide rails, hydraulic moving mechanisms are fixed outside the guide bases, the hydraulic moving mechanisms are hydraulic cylinders, the cylinder bodies of the hydraulic cylinders are fixed outside the guide bases, the hydraulic rods of the hydraulic cylinders are fixedly connected with moving pins, the moving pins are inserted into the moving holes and fixed, and two or more groups of hydraulic moving mechanisms are fixed outside the guide bases.

[0008] The vertical lifting mechanism is provided with a climbing guide mechanism and a climbing mechanism, the climbing guide mechanism comprises a vertical guide frame, the guide frame is welded with the end of the cantilever beam, and strip-shaped lifting guide rails are welded at both sides of the guide frame, a column of lifting holes are arranged at equal intervals on the lifting guide rails.

[0009] The climbing mechanism is provided with a vertical climbing support, three ring-shaped pile-encircling arms are arranged at equal intervals from top to bottom on the climbing support, the ring-shaped pile-encircling arms are provided with ring-shaped main bodies, the ring-shaped main bodies are fixedly welded with the climbing support, the ring-shaped main bodies are provided with an opening and two hinge points, opening and closing hydraulic cylinders are arranged at the hinge points, the cylinder bodies and the hydraulic rods of the opening and closing hydraulic cylinders are respectively arranged at both sides of the hinge points and connected with the ring-shaped main bodies through supports, a plurality of fixed hydraulic cylinders are arranged at equal intervals along the circumference of the ring-shaped main bodies, the hydraulic rods of the fixed hydraulic cylinders are retractable inward, the cylinder bodies of the fixed hydraulic cylinders are perpendicular to the ring-shaped main bodies and embedded in the ring-shaped main bodies, the pile-encircling arms encircle the wind turbine tower, the hydraulic rods of the fixed hydraulic cylinders are in contact with the tower, and lifting devices are fixed at both sides of the top of the climbing support.

[0010] The lifting devices comprise a first hydraulic cylinder and a second hydraulic cylinder, the first hydraulic cylinder is below the second hydraulic cylinder, the cylinder body of the first hydraulic cylinder is fixed with the climbing support through a support, one side of the hydraulic rod of the first hydraulic cylinder is fixedly connected with the cylinder body of the second hydraulic cylinder, and the other side is provided with a first retractable pin, the side surface of the hydraulic rod of the second hydraulic cylinder is provided with a second retractable pin, and the first retractable pin and the second retractable pin are inserted into the lifting holes and fixed.

[0011] The installation system of the floating wind turbine is further characterized in that the moving guide rails are fixed on the deck through supports, the moving guide rails are arranged adjacent to the guide bases, the moving guide rails are higher than the guide bases, and the hydraulic cylinders are arranged in parallel with the moving guide rails.

[0012] The installation system of the floating wind turbine is further characterized in that the ring-shaped main bodies of the pile-encircling arms, the opening on the support main body and the two hinge points are arranged at equal intervals along the circumference of the ring-shaped main bodies.

[0013] The installation system of the floating wind turbine is further characterized in that the two hinge points on the ring-shaped main bodies of the pile-encircling arms are symmetrically arranged.

[0014] The installation system of the floating wind turbine further has that the bottom of the cantilever beam box type frame is in inverted T shape, and the inverted T shaped bottom is inserted into a sliding groove of the guide base to be in sliding connection with the guide base.

[0015] The installation system of the floating wind turbine further has that the bottom of the cantilever beam box type frame is in inverted T shape, and the inverted T shaped bottom is inserted into a sliding groove of the guide base to be in sliding connection with the guide base.

[0016] The installation system of the floating wind turbine further has that the guide base is formed by continuously laying a plurality of sub-bases, and there is a spacing between adjacent sub-bases.

[0017] The installation system of the floating wind turbine further has that the climbing support is provided with a supporting seat at the bottom, and the supporting seat supports the bottom of the tower.

[0018] The installation system of the floating wind turbine further has that the climbing support is provided with three pile arms from top to bottom, and the hydraulic pushing mechanism of the climbing support is located below the first pile arm at the top.

[0019] The advantages of the present application are as follows:

[0020] 1. The cantilever beam system scheme can meet the operation needs of the floating wind turbine installation on the sea, and solves the problem that the installation of the wind turbine on the floating wind power platform cannot be carried out on the wharf due to the influence of the water depth of the wharf.

[0021] 2. The installation equipment involved in the installation scheme of the present application is based on the existing wind power installation platform, and there is no need to additionally build an installation platform for the deep water floating wind power platform, thereby reducing the comprehensive cost of the wind turbine installation and operation.

[0022] 3. After the installation scheme of the present application, the hoisting crane on the offshore wind turbine installation platform that has been in service can basically meet the installation, and there is no need to replace the crane to meet the installation of the wind turbine on the floating wind power platform, thereby fully utilizing the existing offshore wind power installation platform, and thereby reducing the installation cost of the wind turbine on the floating wind power platform. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the side view structure of the cantilever beam of the present application;

[0024] Figure 2 is a schematic diagram of the top view structure of the cantilever beam of the present application;

[0025] Figure 3 is a schematic diagram of the rear view structure of the cantilever beam of the present application;

[0026] Figure 4 is a partial enlarged view of the bottom structure of the box type frame;

[0027] Figure 5is a structural schematic diagram of a climbing mechanism holding a column fan tower;

[0028] Figure 6 is an open schematic diagram of a ring-shaped holding arm;

[0029] Figure 7 is a closed schematic diagram of a ring-shaped holding arm;

[0030] Figure 8 is a partial enlarged schematic diagram of the structure of the lifting device;

[0031] Figure 9 is a schematic diagram of two sections of a fan tower being butt-jointed and assembled by using the present application;

[0032] Figure 10 is a schematic diagram of a completed fan assembly;

[0033] Figure 11 is a schematic diagram of the assembled fan being lifted as a whole upward and above the deck;

[0034] Figure 12 is a schematic diagram of the assembled fan being pushed outward as a whole and moved above the floating wind power platform;

[0035] Figure 13 is a schematic diagram of the fan being butt-jointed with the floating wind power platform;

[0036] Figure 14 is a schematic diagram of the fan being butt-jointed with the floating wind power platform;

[0037] Wherein: 1-installation ship, 2-guiding base, 3-pushing guide rail, 4-lifting guide rail, 5-climbing support, 7-hydraulic pushing mechanism, 8-pushing base, 9-climbing support, 10-cantilever beam, 11-box frame, 12-climbing guiding mechanism, 13-climbing mechanism, 14-lifting hole, 16-holding arm, 17-opening and closing hydraulic cylinder, 18-fixing hydraulic cylinder, 19-fan tower, 20-first hydraulic cylinder, 21-second hydraulic cylinder, 22-first telescopic pin shaft, 23-second telescopic pin shaft, 24-lifting device, 25-supporting base, 26-crane, 27-floating wind power platform, 28-fan. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0039] As Figures 1-8The installation system of the floating type fan is characterized in that two rows of guide bases are fixed on the deck of the installation ship, a cantilever beam is arranged on the guide bases, the cantilever beam is provided with a box type frame, a vertical lifting mechanism is fixed at one end of the box type frame close to seawater, strip-shaped moving guide rails are fixed at the bottom of the box type frame, a row of moving holes are arranged on the moving guide rails at equal intervals, hydraulic moving mechanisms are fixed outside the guide bases, the hydraulic moving mechanisms are hydraulic cylinders, the cylinder bodies of the hydraulic cylinders are fixed outside the guide bases, the hydraulic rods of the hydraulic cylinders are fixedly connected with moving pins, the moving pins are inserted into the moving holes and fixed, and two groups or more than two groups of hydraulic moving mechanisms are fixed outside the guide bases.

[0040] The vertical lifting mechanism is provided with a climbing guide mechanism and a climbing mechanism, the climbing guide mechanism comprises a vertical guide frame, the guide frame is welded with the end of the cantilever beam, and strip-shaped lifting guide rails are welded at the two sides of the guide frame, a column of lifting holes are arranged on the lifting guide rails at equal intervals.

[0041] The climbing mechanism is provided with a vertical climbing support, three ring-shaped pile embracing arms are arranged on the climbing support at equal intervals from top to bottom, the pile embracing arms are provided with a ring-shaped main body, the ring-shaped main body is fixedly welded with the climbing support, the ring-shaped main body is provided with an opening and two hinge points, opening and closing hydraulic cylinders are arranged at the hinge points, the cylinder bodies and the hydraulic rods of the opening and closing hydraulic cylinders are respectively arranged at the two sides of the hinge points and are connected with the ring-shaped main body through supports, a plurality of fixed hydraulic cylinders are arranged on the ring-shaped main body at equal intervals in the circumferential direction, the hydraulic rods of the fixed hydraulic cylinders are retractable inward, the cylinder bodies of the fixed hydraulic cylinders are perpendicular to the ring-shaped main body and are embedded in the ring-shaped main body for fixation, the pile embracing arms embrace the fan tower, the hydraulic rods of the fixed hydraulic cylinders are in contact with the tower, and lifting devices are fixed at the two sides of the top of the climbing support.

[0042] The lifting devices comprise a first hydraulic cylinder and a second hydraulic cylinder, the first hydraulic cylinder is below the second hydraulic cylinder, the cylinder body of the first hydraulic cylinder is fixed with the climbing support through a support, one side of the hydraulic rod of the first hydraulic cylinder is fixedly connected with the cylinder body of the second hydraulic cylinder, and the other side is provided with a first retractable pin, the side surface of the hydraulic rod of the second hydraulic cylinder is provided with a second retractable pin, and the first retractable pin and the second retractable pin are inserted into the lifting holes and fixed.

[0043] The specific implementation is as follows:

[0044] The cantilever beam is welded and installed to the hull of the installation ship through the guide bases, the cantilever beam box type frame is dragged into the predetermined position of the guide bases, the moving hydraulic cylinder of the cantilever beam is installed on the cantilever beam moving guide bases on the hull, the pin of the moving hydraulic cylinder is connected with the moving hole on the moving guide rail, the moving hydraulic cylinder is debugged, and the moving hydraulic cylinder can move the box type cantilever beam structure on the deck of the hull in and out.

[0045] The lifting frame structure is installed into the two "U-shaped slot" guide structures at the end of the box-shaped cantilever beam structure, and then one end of the hydraulic cylinder of the lifting device is fixedly installed with the lifting frame structure, and the other end of the hydraulic cylinder is matched with the pin hole in the two "U-shaped slot" guide structures at the end of the cantilever beam through the climbing guide structure and the bolt, so that the lifting frame structure is hung into the two "U-shaped slot" guide structures at the end of the box-shaped cantilever beam through the guide structure and the bolt on the hydraulic cylinder of the lifting device. The hydraulic system is connected and debugged, and when the hydraulic cylinder is extended and retracted, the lifting frame structure and the fan installed thereon are driven to move up and down along the "U-shaped slot" guide structure at the end of the cantilever beam, so as to meet the operation needs of the vertical lifting of the fan assembly and the installation support system.

[0046] After the assembly of the whole cantilever beam system is completed, the corresponding hydraulic system is debugged again to ensure that the box-shaped cantilever beam structure can move up and down on the ship body structure, the lifting frame structure can move up and down along the end of the cantilever beam, and the pile arm can be smoothly opened and closed.

[0047] When the fan installation platform of the cantilever beam system for floating fan assembly is installed to reach the fan installation sea area, first of all, the pile legs of the installation platform are lowered to the seabed, and through ballast, the installation platform is ensured to stand safely on the seabed.

[0048] Then, after the installation platform is raised to a sufficient height above the sea level, the lifting structure at the end of the cantilever beam is lowered to the sea level to reduce the overall height of the fan after assembly.

[0049] The tower, nacelle hub, blades and the like of the fan are respectively lifted and placed on the lifting structure fan assembly structure at the end of the cantilever beam through the crane on the installation platform or other platform for overall assembly of the fan;

[0050] After the overall assembly of the fan is completed, in order to ensure that the floating fan platform can be smoothly towed to the fan installation position, the overall assembled fan needs to be lifted to a sufficient height through the lifting structure.

[0051] The floating fan platform is towed to the fan installation position, and is relatively fixed to the fan installation position through offshore mooring, auxiliary vessels and winches. The cantilever moving hydraulic cylinder is started to push the cantilever beam and the overall assembled fan to the fan installation position on the floating fan platform, the lifting device of the lifting system is started, and under the pushing of the lifting device, the lifting frame structure with the assembled fan is placed on the fan installation flange of the floating fan platform. After the fan is fixed to the fan installation flange of the floating fan platform through bolts, the fan is completely connected with the floating fan platform, and then the cantilever beam system can be moved back to the ship body fan assembly area through the push-pull of the cantilever beam moving hydraulic cylinder, so as to complete the fan installation of the floating fan platform.

[0052] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacements or changes within the technical scope disclosed by the present application, such as replacing the hydraulic cylinder pushing system with a rack and pinion system, or replacing it with a winch steel wire rope pulling system, etc., and such solutions should be covered within the protection scope of the present application.

Claims

1. An installation system for a floating wind turbine, characterized in that: The installation vessel (1) has two rows of guide bases (2) fixed on the deck. A cantilever beam (10) is located on the guide base. The cantilever beam has a box frame (11). A vertical lifting mechanism is fixed at the end of the box frame that is close to the seawater. Strip-shaped push rails (3) 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 rail. A hydraulic push mechanism (7) is fixed on the outside of the guide base. The push base (8) of the hydraulic push mechanism is fixed on the deck. A hydraulic cylinder is fixed on the top of the push base. The cylinder body of the hydraulic cylinder is fixed on the push base. The hydraulic rod of the hydraulic cylinder is fixedly connected to the push pin. The push pin is inserted into the push hole and fixed. Two or more sets of hydraulic push mechanisms are fixed on the outside of the guide base. 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 (4) 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 arranged climbing support (9). The climbing support has three annular pile-holding arms (16) arranged at equal intervals from top to bottom. The pile-holding arms have an annular body. The annular body is welded and fixed to the climbing support. The annular 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 annular body through the support. Multiple fixed hydraulic cylinders (18) are arranged at equal intervals along the circumference of the annular body. The hydraulic rod of the fixed hydraulic cylinder extends and retracts inward. The cylinder body of the fixed hydraulic cylinder is perpendicular to the annular body and is embedded in the annular body for fixation. The pile-holding arms hug the wind turbine tower (19). The hydraulic rod of the fixed hydraulic cylinder contacts the 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 is located below the second hydraulic cylinder. The cylinder body of the first hydraulic cylinder is fixed to the climbing support by a bracket. One side of the hydraulic rod of the first hydraulic cylinder is fixedly connected to the cylinder body of the second hydraulic cylinder, and the other side has a first telescopic pin (22). The side of the hydraulic rod of the second hydraulic cylinder has a second telescopic pin (23). The first telescopic pin and the second telescopic pin are inserted into the lifting hole for fixation. The guide rail is fixed to the deck by a bracket, and the guide rail is arranged adjacent to and parallel to the hydraulic pushing mechanism. The connection points between the ring-shaped main body of the pile-holding arm and the climbing support, the openings on the support body, and the two hinge points are set at equal intervals along the circumference of the ring-shaped main body.

2. The installation system for a floating wind turbine 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.

3. The installation system for a floating wind turbine according to claim 1, characterized in that: The bottom of the cantilever beam box frame is slidably connected to the guide base.

4. The installation system for a floating wind turbine according to claim 3, characterized in that: The bottom of the cantilever beam box frame is inverted T-shaped, and the bottom of the inverted T-shaped bottom is inserted into the groove of the guide base and slidably connected with the guide base.

5. The installation system for a floating fan according to claim 1, characterized in that: The guide base is formed by laying multiple sub-bases continuously, with gaps between adjacent sub-bases.

6. The installation system for a floating wind turbine 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.

7. The installation system for a floating wind turbine 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.

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