Floating type wind power platform and construction method thereof

Abstract

The invention provides a floating type wind power platform and a construction method thereof, and relates to the technical field of offshore wind power generation. The floating type wind power platform comprises a floating body mounting base, the floating body mounting base comprises at least three transition columns, at least three concrete columns and at least three floating box supports, the transition columns are connected with the corresponding concrete columns, and the two ends of each floating box support are connected with the two adjacent concrete columns correspondingly. And the steel bar columns are connected with the corresponding transition columns. And the two ends of each connecting support are connected with the two adjacent steel bar columns correspondingly. The floating type wind power platform is divided into the floating body mounting base, the multiple steel bar columns and the multiple connecting supports, the floating type wind power platform can be separately transported to the sea during construction, construction is completed on the sea, and the transportation difficulty is reduced.

Description

Technical Field

[0001] This application relates to the technical field of offshore wind power generation, and particularly to a floating wind power platform and a construction method thereof. Background Art

[0002] The power generation platforms of offshore wind power equipment include fixed types and floating types. Among them, the floating wind power platform floats on the sea surface through its own floating body structure and is fixed at a predetermined position by a mooring system. The floating wind power platform can adapt to deeper sea area environments.

[0003] Existing floating wind power platforms need to be built in a shipyard first. After completion, the floating wind power platform needs to be transported to a wharf as a whole and rolled onto a large semi-submersible ship before it can be launched. Due to the large volume and weight of the floating wind power platform, the difficulty of overall transportation is relatively high. Summary of the Invention

[0004] The floating wind power platform and the construction method provided by the embodiments of this application divide the floating wind power platform into a floating body installation base, a plurality of steel columns, and a plurality of connecting brackets. During construction, they can be transported separately to the sea and the construction can be completed at sea, reducing the transportation difficulty.

[0005] In a first aspect, the embodiments of this application provide a floating wind power platform, including:

[0006] A floating body installation base, the floating body installation base includes at least three transition columns, concrete columns, and floating box brackets. The transition columns are connected to the corresponding concrete columns, and both ends of the floating box brackets are respectively connected to two adjacent concrete columns;

[0007] At least three steel columns, the steel columns are connected to the corresponding transition columns;

[0008] At least three connecting brackets, both ends of the connecting brackets are respectively connected to two adjacent steel columns.

[0009] In the embodiments of this application, the floating box brackets and the concrete columns are integrally cast.

[0010] In the embodiments of this application, hollow layers are provided inside the transition columns, the concrete columns, and the floating box brackets.

[0011] In the embodiments of this application, the floating box brackets include floating boxes and support columns. The floating boxes are arranged inside the support columns, and the floating boxes are located above the hollow layers inside the floating box brackets.

[0012] In the embodiments of this application, it further includes an installation platform, and the installation platform is arranged on the transition columns.

[0013] In the embodiments of the present application, the two ends of the floating box bracket are provided with bevel edges, and the bevel edges of two adjacent floating box brackets are attached to each other.

[0014] In the embodiments of the present application, it further includes a strengthening connecting member, which is arranged at the connection between the connecting bracket and the steel bar column. One end of it is fixedly welded to the connecting bracket, and the other end is connected to the steel bar column through bolts.

[0015] In the embodiments of the present application, the strengthening connecting member is arc-shaped.

[0016] In the embodiments of the present application, a heat preservation member is filled in the hollow layer.

[0017] In a second aspect, the embodiments of the present application further provide a method for constructing a floating wind power platform, which is applied to the floating wind power platform described in the first aspect. The method is as follows:

[0018] First, complete the connection of the transition column and the concrete column on the ground, and connect two adjacent concrete columns through the floating box bracket to obtain a floating body installation base;

[0019] Then, lift the floating body installation base into the sea, and fill seawater into the floating box bracket to make the floating body installation base sink to the seabed;

[0020] Finally, connect the steel bar column and the transition column, and connect two adjacent steel bar columns through the connecting bracket to obtain a floating wind power platform.

[0021] The embodiments of the present application provide a floating wind power platform, which includes a floating body installation base. The floating body installation base includes at least three transition columns, at least three concrete columns and at least three floating box brackets. The transition column is connected to the corresponding concrete column, and the two ends of the floating box bracket are respectively connected to two adjacent concrete columns. At least three steel bar columns, the steel bar columns are detachably connected to the corresponding transition columns. At least three connecting brackets, the two ends of the connecting bracket are respectively detachably connected to two adjacent steel bar columns. By dividing the floating wind power platform into a floating body installation base, multiple steel bar columns and multiple connecting brackets, it can be transported separately to the sea during construction and the construction can be completed at sea, reducing the transportation difficulty. Description of the Drawings

[0022] The drawings here are incorporated into the description and form a part of this description, showing the embodiments consistent with the present application, and are used together with the description to explain the principles of the present application.

[0023] Figure 1 It is a schematic structural diagram of a floating wind power platform provided by the present application;

[0024] Figure 2 is Figure 1Structural schematic diagram from another angle in

[0025] Figure 3 Top view of the floating body installation base in a floating wind power platform provided by the present application;

[0026] Figure 4 Connection schematic diagram of a connection bracket in a floating wind power platform provided by the present application;

[0027] Figure 5 Flow chart of the construction method of the floating wind power platform provided by the present application.

[0028] Reference numerals:

[0029] 100 - Floating body installation base; 110 - Transition column; 120 - Concrete column; 130 - Float bracket; 131 - Float; 132 - Support column; 133 - Hypotenuse;

[0030] 200 - Reinforced column; [[ID=...]]

[0031] 300 - Connection bracket;

[0032] 400 - Hollow layer;

[0033] 500 - Installation platform;

[0034] 600 - Reinforcing connector.

[0035] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed description of the specific embodiments

[0036] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the scope of protection of the present application.

[0037] In the description and claims of this application and the above-mentioned drawings, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein. In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0038] The power generation platform of the offshore wind power equipment includes a fixed type and a floating type. Among them, the floating wind power platform floats on the sea surface through its own floating body structure and is fixed at a predetermined position by a mooring system. The floating wind power platform can adapt to a deeper sea area environment.

[0039] The existing floating wind power platforms need to be built in a shipyard first. After completion, the floating wind power platforms need to be transported as a whole to the wharf and rolled onto a large semi-submersible ship before they can be launched into the water. Due to the large volume and weight of the floating wind power platforms, the difficulty of overall transportation is relatively high.

[0040] The floating wind power platform and its construction method provided by the embodiments of this application divide the floating wind power platform into a floating body installation base, a plurality of steel columns and a plurality of connecting brackets. During construction, they can be transported separately to the sea and the construction can be completed at sea, reducing the transportation difficulty. The embodiments of this application will be further described below in conjunction with the drawings.

[0041] Among them, Figure 1 is a schematic structural diagram of a floating wind power platform provided by this application. Figure 2 is Figure 1 a schematic structural diagram from another angle in Figure 3 is a top view of the floating body installation base in a floating wind power platform provided by this application. Figure 4 is a connection schematic diagram of the connecting brackets in a floating wind power platform provided by this application. Figure 5 is a flowchart of the construction method of the floating wind power platform provided by this application.

[0042] Combined with Figures 1-4 shown, the embodiments of this application provide a floating wind power platform, including:

[0043] Floating body installation base 100, the floating body installation base 100 includes at least three transition columns 110, at least three concrete columns 120 and at least three floating box brackets 130. The transition columns 110 are connected to the corresponding concrete columns 120, and both ends of the floating box brackets 130 are respectively connected to two adjacent concrete columns 120.

[0044] At least three steel columns 200, and the steel columns 200 are detachably connected to the corresponding transition columns 110.

[0045] At least three connecting brackets 300, and both ends of the connecting brackets 300 are respectively detachably connected to two adjacent steel columns 200.

[0046] Among them, the floating body installation base 100, the steel columns 200 and the connecting brackets 300 can be respectively manufactured in different manufacturing factories, and after manufacturing, they are transported to the dock for installation by corresponding transportation means.

[0047] The floating body installation base 100 is composed of three transition columns 110, three concrete columns 120 and three floating box brackets 130. The three transition columns 110 are evenly distributed, and the lower end of each transition column 110 is firmly connected to the corresponding concrete column 120 by welding to ensure that the connection strength between the two is sufficient to withstand various subsequent transmitted loads.

[0048] The floating box brackets 130 are made of ultra-lightweight and high-strength concrete, and both ends of it are respectively connected to two adjacent concrete columns 120 to form a closed ring structure, so that the entire floating body installation base 100 has good stability on the plane.

[0049] There are also three steel columns 200 configured. The steel columns 200 build a higher support structure for the entire wind power platform, which is convenient for subsequent installation of wind power generation related equipment, etc. The lower end of each steel column 200 is connected to the corresponding transition column 110 by high-strength bolts. This connection method is convenient for installation, disassembly and maintenance. At the same time, on the premise of ensuring firm connection, appropriate adjustment can be made according to actual needs. The steel columns 200 are made of special alloy steel resistant to seawater corrosion, and can withstand large vertical pressures and lateral tensile forces generated by wind and waves in the marine environment, building a reliable support framework for the entire wind power platform.

[0050] There are also three connecting brackets 300 configured. The connecting brackets 300 are also made of high-strength alloy steel. Both ends of it are respectively connected to two adjacent steel columns 200 by welding technology. The connecting brackets 300 are designed in the shape of a truss structure. This structural form can effectively reduce its own weight while ensuring structural strength, thereby reducing the self-weight of the platform as a whole and being beneficial to the floating stability of the platform on the sea.

[0051] At least one top of the connecting bracket 300 is provided with a support platform for carrying wind power generation equipment.

[0052] When the two ends of the connecting bracket 300 are connected to the adjacent steel columns 200, in addition to the conventional welding and bolt connection, a rubber shock pad is also arranged at the connection part. The rubber shock pad can effectively buffer the vibration generated by the platform under the action of wind and waves, reduce the fatigue damage caused by long-term vibration to the connection part, and extend the service life of the connection structure. The connecting bracket 300 adopts a box-shaped structure, and a plurality of reinforcing partitions are arranged inside to enhance its own bending and torsion resistance performance, so as to better maintain the stability of the upper structure of the whole platform.

[0053] By dividing the floating wind power platform into a floating body installation base 100, a plurality of steel columns 200 and a plurality of connecting brackets 300, it can be transported separately to the sea during construction and completed at sea, reducing the transportation difficulty. And the concrete columns 120 and the steel columns 200 can be constructed simultaneously or separately in different manufacturing plants, reducing resource consumption and shortening the construction period.

[0054] In the embodiment of the present application, the floating box bracket 130 and the concrete column 120 are integrally cast.

[0055] Among them, during the casting process, the mix ratio of the concrete and the casting process parameters are strictly controlled to ensure the casting quality, so that the connection between the floating box bracket 130 and the concrete column 120 is seamless, there is no weak connection point, and the stability of the overall structure of the floating body installation base 100 is effectively enhanced.

[0056] In the embodiment of the present application, a hollow layer 400 is provided in each of the transition column 110, the concrete column 120 and the floating box bracket 130.

[0057] These hollow layers 400 can not only reduce the self-weight of the whole platform to a certain extent, but also assist the floating of the floating wind power platform.

[0058] The floating box bracket 130 adopts a box-shaped cross-section, and the internal hollow layer 400 is divided into a plurality of independent compartments. The independent compartment design ensures that when a certain compartment is damaged, the other compartments can still remain sealed, preventing the overall sinking of the platform and improving safety.

[0059] Among them, a maintenance manhole is arranged at the top of the hollow layer 400, equipped with a sealing cover and a safety lock, which is convenient for personnel to enter for maintenance. [[ID=?]] [[ID=?]]

[0060] In the embodiment of the present application, the floating box bracket 130 includes a floating box 131 and a support column 132. The floating box 131 is arranged inside the support column 132, and the floating box 131 is located above the hollow layer 400 inside the floating box bracket 130.

[0061] Among them, the floating box 131 is composed of multiple independent cylindrical aluminum alloy pontoons. A channel is provided on the support column 132, and seawater is conveyed into the floating box 131 through the channel.

[0062] In the embodiment of the present application, it further includes an installation platform 500, and the installation platform 500 is arranged on the transition column 110. The installation platform 500 is used for operators to stand so that the operators can install the steel column 200 and the connection bracket 300.

[0063] In the embodiment of the present application, an anti-corrosion coating is provided on the outer surface of the steel column 200. The anti-corrosion coating is used to prevent the seawater from eroding the body of the steel column 200.

[0064] In the embodiment of the present application, bevels 133 are provided at both ends of the floating box bracket 130, and the bevels 133 of two adjacent floating box brackets 130 are mutually attached. Such a bevel design enables the bevels 133 to be mutually attached when two adjacent floating box brackets are spliced, increasing the contact area and enhancing the connection tightness.

[0065] In the embodiment of the present application, it further includes a strengthening connector 600. The strengthening connector 600 is arranged at the connection between the connection bracket 300 and the steel column 200. One end of it is fixedly welded to the connection bracket 300, and the other end is bolted to the steel column 200.

[0066] Among them, the strengthening connector 600 is used to reinforce the connection between the connection bracket 300 and the steel column 200.

[0067] In the embodiment of the present application, the strengthening connector 600 is arc-shaped. By adopting an arc shape, its arc radius is adaptively designed according to the specific dimensions of the connection bracket 300 and the steel column 200, and generally the value range is between 0.5 - 1.5 meters to ensure that the stress at the connection can be smoothly dispersed. The overall length of the connector along the connection direction is 0.8 - 1.2 meters, the width is 0.3 - 0.5 meters, and the thickness is 20 - 30 millimeters, ensuring that its internal organizational structure is uniform and it has good mechanical properties.

[0068] In the embodiment of the present application, heat preservation components are filled in the hollow layer 400 of the support leg, the hollow layer 400 of the connection bracket 300, and the hollow layer 400 of the floating box bracket 130.

[0069] The heat preservation components filled in the hollow layer 400 of the support leg, the hollow layer 400 of the connection bracket 300, and the hollow layer 400 of the floating box bracket 130 can effectively block the conduction of the external temperature, reduce the influence of the external low-temperature or high-temperature environment on the inside of the platform, and make the environmental temperature where the internal structure and equipment of the platform are located relatively stable.

[0070] Such as Figure 5As shown in the figure, an embodiment of the present application further provides a method for constructing a floating wind power platform, which is applied to the floating wind power platform in the first aspect. The method is as follows:

[0071] S100. First, connect the transition column 110 and the concrete column 120 on the ground, and connect two adjacent concrete columns 120 through the floating box bracket 130 to obtain the floating body installation base 100.

[0072] S200. Then, lift the floating body installation base 100 into the sea, and fill seawater into the floating box bracket 130 to make the floating body installation base 100 sink to the seabed.

[0073] S300. Finally, connect the steel bar column 200 to the transition column 110, and connect two adjacent steel bar columns 200 through the connection bracket 300 to obtain the floating wind power platform.

[0074] Among them, high-strength steel is selected to manufacture the steel bar column 200 and the connection bracket 300. For the concrete column 120, the transition column 110 and the floating box bracket 130, the three are directly precast with concrete at the dock to obtain the floating body installation base 100, and there is no need to customize them at the shipyard.

[0075] Specifically, the main body of the concrete column 120 is made of concrete. The transition column 110 adopts a steel-concrete composite structure, with a steel structure core column inside and a certain thickness of concrete protective layer wrapped outside. The two work together through shear connectors (such as stud bolts, etc.) to enhance the overall bearing capacity. The support column 132 of the floating box bracket 130 adopts a concrete structure, and the floating box 131 is located inside the support column 132.

[0076] The concrete column 120 and the floating box bracket 130 are manufactured at the dock through an integral pouring process to reduce the overall transportation process. After pouring is completed, the concrete column 120 is connected to the transition column 110.

[0077] In step S100, it is necessary to first set up a mold on the dock site and form the floating body installation base 100 through integral pouring with the mold. The weight of the floating body installation base 100 only accounts for half of the overall installation platform 500. Due to its light weight, most of the lifting tools at the dock can lift the floating body installation base 100 into the sea, and there is no need to use a semi-submersible ship. Using the lifting tool is more time-saving.

[0078] In step S200, after the floating body installation base 100 is launched into the water, seawater is pumped in using temporary ballast equipment, so that the lower end of the floating body installation base 100 slowly sits on the bottom until it is stable.

[0079] In step S300, the fabricated steel column 200 and the transition column 110 are hoisted above the floating body installation base 100. The steel column 200 and the transition section are welded together, and the steel column 200 is connected by the connection bracket 300 to form a floating wind power platform.

[0080] Exemplarily, after the floating wind power platform is assembled and formed, according to the actual requirements of the installation of the wind turbine and its cylinder, it can be completed in the sitting-on-bottom stage, or the ballast water in the floating wind power platform can be pumped out to make the main floating body in a self-floating state to complete the outfitting work and install the wind turbine and the cylinder.

[0081] An embodiment of the present application provides a floating wind power platform, including a floating body installation base 100. The floating body installation base 100 includes at least three transition columns 110, concrete columns 120, and floating box brackets 130. The transition columns 110 are connected to the corresponding concrete columns 120, and both ends of the floating box brackets 130 are respectively connected to two adjacent concrete columns 120. At least three steel columns 200, the steel columns 200 are connected to the corresponding transition columns 110. At least three connection brackets 300, both ends of the connection brackets 300 are respectively connected to two adjacent steel columns 200. By dividing the floating wind power platform into the floating body installation base 100, multiple steel columns 200, and multiple connection brackets 300, it can be transported separately to the sea during construction and the construction can be completed at sea, reducing the transportation difficulty.

[0082] It should be noted that the embodiments referred to in the specification, such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc., may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. Moreover, when combining specific features, structures, or characteristics with an embodiment, implementing such features, structures, or characteristics in combination with other embodiments, whether explicitly or implicitly described, is within the knowledge scope of those skilled in the art.

[0083] Generally speaking, the terms should be understood at least in part by their use in the context. For example, at least in part according to the context, the term "one or more" used in the text can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Similarly, at least in part according to the context, terms such as "a" or "the" can also be understood as conveying a singular usage or conveying a plural usage.

[0084] It should be easily understood that the terms "on", "above", and "over" in this disclosure should be interpreted in the broadest manner, such that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only include the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0085] In addition, for ease of description, spatial relative terms may be used in the text, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another element or feature as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly as well.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A floating wind power platform, characterized in that, Comprising: A floating body installation base (100), the floating body installation base (100) includes at least three transition columns (110), at least three concrete columns (120) and at least three floating box brackets (130), the transition column (110) is connected to the corresponding concrete column (120), and both ends of the floating box bracket (130) are respectively connected to two adjacent concrete columns (120); At least three steel columns (200), the steel columns (200) are detachably connected to the corresponding transition columns (110); At least three connecting brackets (300), both ends of the connecting brackets (300) are respectively detachably connected to two adjacent steel columns (200).

2. The floating wind power platform according to claim 1, wherein The floating box bracket (130) is integrally cast with the concrete column (120).

3. The floating wind power platform according to claim 2, characterized in that, A hollow layer (400) is provided inside the transition column (110), the concrete column (120) and the floating box bracket (130).

4. The floating wind power platform according to claim 3, wherein The floating box bracket (130) includes a floating box (131) and a support column (132), the floating box (131) is arranged inside the support column (132), and the floating box (131) is located above the hollow layer (400) inside the floating box bracket (130).

5. The floating wind power platform according to any one of claims 1-4, characterized in that, It further includes an installation platform (500), the installation platform (500) is arranged on the transition column (110).

6. The floating wind power platform according to any one of claims 1-4, characterized in that, Both ends of the floating box bracket (130) are provided with bevel edges (133), and the bevel edges (133) of two adjacent floating box brackets (130) are mutually attached.

7. The floating wind power platform according to any one of claims 1-4, characterized in that, It further includes a strengthening connecting piece (600), the strengthening connecting piece (600) is arranged at the connection between the connecting bracket (300) and the steel column (200), one end of it is fixedly welded to the connecting bracket (300), and the other end is bolt-connected to the steel column (200).

8. The floating wind power platform according to claim 7, characterized in that, The strengthening connecting piece (600) is arc-shaped.

9. The floating wind power platform according to claim 3 or 4, characterized in that, The hollow layer (400) is filled with heat-insulating components.

10. A construction method of a floating wind power platform, characterized in that, Applied to the floating wind power platform according to any one of claims 1-9, the method is as follows: First, complete the connection of the transition column (110) and the concrete column (120) on the ground, and connect two adjacent concrete columns (120) through the floating box bracket (130) to obtain the floating body installation base (100); Then hoist the floating body installation base (100) into the sea, and fill seawater into the inside of the floating box bracket (130) to make the floating body installation base (100) sink to the seabed; Finally, connect the steel column (200) to the transition column (110), and connect two adjacent steel columns (200) through the connecting bracket (300) to obtain the floating wind power platform.

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