Pool test device of semi-submersible wind power platform with detachable heaving plate

Abstract

The utility model discloses a pool test device of a semi-submersible wind power platform with a detachable heaving plate. The pool test device comprises a fan system model, a semi-submersible platform model, a heaving plate model, a butt joint hole site, a mooring rope model and a mooring rope guide hole, the semi-submersible platform model adopts wood as a framework, and glass fiber reinforced plastics are laid on the surface, so that the model has good sealing and waterproof performance while the structural strength of the model is ensured; the heaving plate model is made of glass fiber reinforced plastic materials, corresponding butt joint hole positions are designed in the bottom of the semi-submersible type platform and the heaving plates, and the mode of bolt connection and AB glue sealing is adopted, so that the purpose that the same semi-submersible type wind power platform model is provided with multiple sets of heaving plates is achieved, and the structural form of the pool test model is enriched; according to the utility model, the economical efficiency of the pool test model is improved, the semi-submersible platform pool test efficiency is improved, and the floating wind turbine is helped to develop quickly.

Description

Technical Field

[0001] The utility model belongs to the technical field of floating wind power platforms, and in particular relates to a water pool test device of a semi-submersible wind power platform with a detachable heave plate. Background Art

[0002] In order to improve the motion performance of floating wind turbines and maintain structural stability, a heave plate structure is usually added to the foundation of a semi-submersible wind power platform. Heave plates of different structural forms can change the natural period and damping coefficient of the platform to meet the requirements of operations in different sea areas. The water tank model test is an indispensable and important link before the floating wind turbine generator set is put into operation. Advanced water tank model test technology can accurately predict the hydrodynamic performance of the unit under real sea conditions. At the same time, water tank model test research can promote the selection and optimization of the floating wind turbine structure and promote the application and rapid development of the wind power industry.

[0003] The floating wind turbine model includes the wind turbine system, floating platform, mooring system, etc. In previous tank model tests, for the floating wind power platform model, the platform and the heave plate are usually designed as an integrated structure, which will lead to a single structure of the tank test model and it is difficult to achieve the research goal of the influence of different structural forms on the hydrodynamic performance of the platform. Therefore, the economy and repeatability of the tank test model need to be improved urgently. Utility Model Content

[0004] The utility model provides a water tank test device for a semi-submersible wind power platform with a detachable heave plate, which solves the problem that a traditional water tank test model of a semi-submersible wind power platform usually integrates the heave plate and the platform body. When there is a need to study the influence of different heave plates on the motion performance of the platform, multiple platforms and heave plates need to be processed, resulting in a single structural form of the water tank test model, low test efficiency, poor economic performance, and inability to meet the test research.

[0005] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0006] The embodiment of the utility model provides a water tank test device for a semi-submersible wind power platform with a detachable heave plate, which is used to simulate a floating offshore platform model, wherein the device includes a wind turbine system model 1, a semi-submersible platform model 2, a heave plate model 3, a mooring cable model 5 and a fairlead 6;

[0007] The heave plate model 3 is connected to the bottom of the semi-submersible platform model 2; the semi-submersible platform model 2 includes a main column and two sub-columns, and the main column and the two sub-columns are connected by buoys and cross braces to form a stable floating platform; the wind turbine system model 1 is mounted on the main column of the semi-submersible platform model 2 to form an offset floating wind turbine system;

[0008] The bottoms of the main column and two sub-columns of the semi-submersible platform model 2 are provided with fairlead holes 6, and the mooring cable model 5 is connected to the semi-submersible platform model 2 through the fairlead holes 6 to provide target tension for the water tank test device during the test to ensure the stability of the water tank test device.

[0009] According to an optional embodiment of the utility model, the semi-submersible platform model 2 also includes a platform model skeleton connected to the main column and the two sub-columns, and the platform model skeleton is built of wood to ensure the structural strength of the semi-submersible platform model 2. Based on the similarity of Froude numbers and according to the size of the water tank laboratory site and the size of the semi-submersible platform prototype, a preset scale ratio is selected, and the platform model skeleton can reflect the mechanical characteristics of the offshore platform model prototype.

[0010] According to an optional embodiment of the utility model, the surface of the platform model skeleton of the semi-submersible platform model 2 is paved with fiberglass, which is waterproof and can achieve long-term testing under rated conditions and extreme conditions in a water pool.

[0011] According to an optional embodiment of the utility model, the main column and two sub-columns of the semi-submersible platform model 2 are hollow structures. By placing ballast iron in the main column and the two sub-columns, the ballast water of the semi-submersible platform can be equivalently simulated, thereby achieving inertia similarity between the water tank test device and the offshore platform model prototype.

[0012] According to an optional embodiment of the utility model, docking holes 4 are provided at the bottom of the semi-submersible platform model 2 and in the heave plate model 3, and fixing parts are passed through the docking holes 4 to fix the heave plate model 3 on the bottom surface of the semi-submersible platform model 2, and the heave plate model 3 is made of fiberglass.

[0013] According to an optional embodiment of the utility model, the fixing member is coated with AB glue at the docking hole 4 to ensure complete sealing between the semi-submersible platform model 2 and the heave plate model 3, and the fixing member is a bolt.

[0014] According to an optional embodiment of the utility model, the heave plate model 3 is provided with a notch of a preset angle to reserve space for the fairlead hole 6 , so as to facilitate the installation of the mooring cable model 5 .

[0015] Beneficial effects: The embodiment of the utility model provides a water tank test device for a semi-submersible wind power platform with a detachable heave plate. The utility model achieves the goal of configuring multiple sets of heave plates for the same semi-submersible wind power platform model by designing docking holes in the bottom of the semi-submersible platform model and the heave plate model, and adopts bolt connection and AB glue sealing, thereby enriching the structural form of the water tank test model. The utility model is easy to operate, saves model processing and manufacturing costs, and can ultimately improve the efficiency of water tank model testing and promote the rapid development of floating wind power technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A side view of a water tank test device for a semi-submersible wind power platform with a detachable heave plate provided in an embodiment of the present application.

[0018] Figure 2 A top view of a water tank test device for a semi-submersible wind power platform with a detachable heave plate provided in an embodiment of the present application.

[0019] Figure 3 A schematic diagram of heave plates of different shapes and a heave plate semi-submersible platform after connection provided in an embodiment of the present application.

[0020] Among them: wind turbine system model 1, semi-submersible platform model 2, heave plate model 3, semi-submersible platform model and heave plate model corresponding docking hole 4, mooring cable model 5, cable guide hole 6, heave plate one 31, heave plate two 32, heave plate three 33. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0022] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a water tank test device for a semi-submersible wind power platform with a detachable heave plate, which is used to simulate a floating offshore platform model, wherein the water tank test device includes a wind turbine system model 1, a semi-submersible platform model 2, a heave plate model 3, a mooring cable model 5 and a fairlead 6.

[0023] The heave plate model 3 is connected to the bottom of the semi-submersible platform model 2; the semi-submersible platform model 2 is in the form of three columns, and the semi-submersible platform model 2 includes a main column and two sub-columns, and the main column and the two sub-columns are connected by a buoy and a cross brace to form a stable floating platform; in this embodiment, the bottom of the main column and the two sub-columns are connected by a buoy, and the top of the main column and the two sub-columns are connected by a cross brace; the bottom surfaces of the main column and the two sub-columns and the bottom surface of the buoy are movably connected to the heave plate model.

[0024] The wind turbine system model 1 is mounted on the main column of the semi-submersible platform model 2 to form an offset floating wind turbine system.

[0025] The main column and the bottom of the two sub-columns of the semi-submersible platform model 2 are provided with fairlead holes 6, and the mooring cable model 5 is connected to the semi-submersible platform model 2 through the fairlead holes 6, providing the target tension for the water tank test device during the test to ensure the stability of the water tank test device. The system cable and anchor block of the mooring cable model 5, which is the fairlead hole 6 in this embodiment, is located at the bottom of each column of the semi-submersible platform, and is used to connect the system cable and the semi-submersible platform model 2.

[0026] The semi-submersible platform model 2 also includes a platform model skeleton connected to the main column and two sub-columns. The platform model skeleton is made of wood to ensure the structural strength of the semi-submersible platform model 2. Based on the similarity of the Froude number and the preset scale ratio selected according to the size of the pool laboratory site and the size of the semi-submersible platform prototype, the platform model skeleton can reflect the mechanical characteristics of the offshore platform model prototype. The surface of the platform model skeleton of the semi-submersible platform model 2 is paved with fiberglass, which is waterproof and can achieve long-term testing under rated conditions and extreme conditions in the pool.

[0027] The main column and two sub-columns of the semi-submersible platform model 2 are hollow structures. By placing ballast iron in the main column and the two sub-columns, the ballast water of the semi-submersible platform can be equivalently simulated, thereby achieving inertia similarity between the water tank test device and the offshore platform model prototype.

[0028] The bottom of the semi-submersible platform model 2 and the heave plate model 3 are provided with docking holes 4, which are used to connect the semi-submersible platform model 2 and different forms of heave plate models 3. The docking holes 4 at the bottom of the semi-submersible platform model 2 and the docking holes 4 of the heave plate model are equal in size and correspond in position to each other. Different openings 4 are designed between the bottom surface of the column of the semi-submersible platform model 2 and the heave plate model of this embodiment, which are used to connect different forms of heave plate models 3.

[0029] The docking hole 4 is an M5 threaded hole. The fixing piece is inserted into the docking hole 4 to fix the heave plate model 3 on the bottom surface of the semi-submersible platform model 2. The fixing piece is coated with AB glue at the docking hole 4 to ensure that the semi-submersible platform model 2 and the heave plate model 3 are completely sealed to prevent water from entering the structure. The fixing piece is a bolt. The heave plate model 3 is made of glass fiber reinforced plastic material.

[0030] The heave plate 3 in this embodiment is detachably connected, and the heave plate structure can be replaced according to the requirements of different motion performances of the floating platform, thereby improving the efficiency of the water tank model test and saving the cost of model processing and manufacturing. Figure 3 As shown, the embodiment of the present application provides three structures of three heave plates, namely, heave plate 1 31, heave plate 2 32 and heave plate 3 33, and three connection states of these three heave plates and the bottom of the semi-submersible platform model 2. Each heave plate model 3 is provided with a notch of a preset angle to reserve space for the fairlead 6, which can avoid the mooring cable model and the fairlead, and facilitate the installation of the mooring cable model 5.

[0031] The utility model takes a three-column semi-submersible platform as an example and designs a water tank test model of a semi-submersible wind power platform with a detachable heave plate. In fact, the utility model is also applicable to floating offshore platform models of other structural forms such as Spar foundations.

[0032] The utility model opens a docking hole on the bottom lower surface of the semi-submersible platform model and connects it with the heave plate, so that the heave plate can be easily replaced for the same floating platform. During the test, the heave plate can be easily replaced by tools such as hexagon sockets, thereby changing the structural natural period and hydrodynamic damping, and then the influence of different heave plates on the motion performance of the floating body can be deeply studied, the platform structure can be optimized, and the feasibility of the water tank test model can be increased. Compared with the traditional integrated model of floating platform and heave plate, the utility model can avoid repeated processing of the model, save the cost of model processing and production, and improve the efficiency of water tank model testing.

[0033] The above are only specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited to this. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present utility model within the spirit and principles of the present utility model should be covered within the protection scope of the present utility model; ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be based on the scope defined by the claims.

Claims

1. A water tank test device for a semi-submersible wind power platform with a detachable heave plate, used to simulate a floating offshore platform model, characterized in that: It includes a wind turbine system model (1), a semi-submersible platform model (2), a heave plate model (3), a mooring cable model (5) and a fairlead (6); The heave plate model (3) is connected to the bottom of the semi-submersible platform model (2); the semi-submersible platform model (2) comprises a main column and two sub-columns, the main column and the two sub-columns are connected via buoys and cross braces to form a stable floating platform; the wind turbine system model (1) is mounted on the main column of the semi-submersible platform model (2) to form an offset floating wind turbine system; The main column and the bottoms of the two sub-columns of the semi-submersible platform model (2) are provided with fairlead holes (6), and the mooring cable model (5) is connected to the semi-submersible platform model (2) through the fairlead holes (6), providing a target tension for the water tank test device during the test, so as to ensure the stability of the water tank test device.

2. The water tank test device of a semi-submersible wind power platform with a detachable heave plate according to claim 1 is characterized in that: The semi-submersible platform model (2) further comprises a platform model skeleton connected to the main column and the two sub-columns. The platform model skeleton is constructed of wood and is used to ensure the structural strength of the semi-submersible platform model (2). Based on the similarity of the Froude number and according to the size of the water tank laboratory site and the size of the semi-submersible platform prototype, a preset scale ratio is selected. The platform model skeleton can reflect the mechanical characteristics of the offshore platform model prototype.

3. The water tank test device of a semi-submersible wind power platform with a detachable heave plate according to claim 2 is characterized in that: The surface of the platform model skeleton of the semi-submersible platform model (2) is paved with glass fiber reinforced plastics, which is waterproof and can be used for long-term testing under rated working conditions and extreme working conditions in a water tank.

4. The water tank test device of a semi-submersible wind power platform with a detachable heave plate according to claim 3 is characterized in that: The main column and two sub-columns of the semi-submersible platform model (2) are hollow structures. Ballast iron is placed in the main column and the two sub-columns to simulate the ballast water of the semi-submersible platform, thereby achieving inertia similarity between the water tank test device and the offshore platform model prototype.

5. The water tank test device for a semi-submersible wind power platform with a detachable heave plate according to claim 3, characterized in that: A docking hole (4) is provided at the bottom of the semi-submersible platform model (2) and in the heave plate model (3); a fixing piece is inserted into the docking hole (4) to fix the heave plate model (3) on the bottom surface of the semi-submersible platform model (2); and the heave plate model (3) is made of glass fiber reinforced plastic material.

6. The water tank test device of a semi-submersible wind power platform with a detachable heave plate according to claim 5, characterized in that: The fixing member is coated with AB glue at the docking hole (4) to ensure complete sealing between the semi-submersible platform model (2) and the heave plate model (3), and the fixing member is a bolt.

7. The water tank test device of a semi-submersible wind power platform with a detachable heave plate according to claim 6, characterized in that: The heave plate model (3) is provided with a notch of a preset angle, which reserves space for the fairlead hole (6) and facilitates the installation of the mooring cable model (5).

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