Dynamic test device for floating wind power platform

Abstract

The application provides a power test device for a floating wind power platform, and specifically comprises a water tank structure, a mounting table, an angle adjusting device, a wind power platform and a traction device. The water tank structure comprises a tank body, a wave making device and a wave absorbing device arranged in the tank body, the wave making device is located at a first end of the tank body, and the wave absorbing device is located at a second end of the tank body; the mounting table is arranged on a bottom wall of the tank body; the angle adjusting device comprises an annular slide rail and a sliding structure slidably arranged on the annular slide rail; the wind power platform comprises a floating table and a wind power generation device fixedly connected with the floating table; the traction device comprises a plurality of traction chains, a first end of each traction chain is connected with the floating table, a second end of each traction chain is connected with the sliding structure, and the first ends of the plurality of traction chains are arranged at intervals in a circumferential direction of the floating table. The technical scheme of the application can solve the problem that a physical model in the related art is difficult to accurately restore the actual use scene of the wind power platform.

Description

Technical Field

[0001] This application relates to offshore wind power generation technology, and more particularly to a dynamic testing device for a floating wind power platform. Background Technology

[0002] my country possesses abundant offshore wind energy resources. With the vigorous development of technologies such as offshore platforms, port engineering, and water conservancy projects, wind energy development has gradually expanded from flat and complex terrain on land to nearshore areas and even deep-sea areas. Floating offshore wind power generation has enormous development potential.

[0003] Currently, floating offshore wind turbines generally consist of turbine blades, nacelle, tower, floating structure, and mooring system. Under the complex excitation of random waves, ocean currents, wind loads, and earthquakes in the open sea, their structures are highly susceptible to vibration. Large-amplitude vibrations severely affect the normal and safe operation of the wind turbine. To ensure the safety, economy, and stability of the structure, it is essential to analyze the hydrodynamic characteristics and dynamic response of floating offshore wind turbine platforms under the coupled effects of waves, currents, wind loads, and earthquakes. Most analyses of the hydrodynamic characteristics and dynamic response of floating offshore wind turbines under multi-field coupling effects employ mathematical models or physical models.

[0004] The mathematical modeling analysis involves numerous simplifications, leading to significant errors in the results. Physical modeling analysis primarily utilizes artificially constructed experimental facilities to simulate hydrodynamic characteristics. Specifically, these facilities include small wave-current flumes, large wind tunnels, and underwater shaking tables. However, wave-current flumes cannot accurately simulate the effects of different wind directions or seismic excitation directions on wind turbine platforms. While large wind tunnels and underwater shaking tables are feasible, they typically involve long construction periods, high costs, complex waterproofing measures, and high testing costs. Summary of the Invention

[0005] This application provides a dynamic testing device for floating wind power platforms to solve the problem that physical models in related technologies are difficult to accurately reproduce the actual use scenarios of wind power platforms.

[0006] This application provides a dynamic testing device for a floating wind power platform, comprising: a water tank structure, including a tank body and a wave-generating device and a wave-dissipating device disposed within the tank body, the wave-generating device being located at a first end of the tank body and the wave-dissipating device being located at a second end of the tank body; a mounting platform disposed on the bottom wall of the tank body; an angle adjustment device, including an annular slide rail disposed on the mounting platform and a sliding structure slidably disposed on the annular slide rail; a wind power platform, including a floating platform and a wind power generation device fixedly connected to the floating platform; and a traction device, including multiple traction chains, the first end of each traction chain being connected to the floating platform, the second end of each traction chain being connected to the sliding structure, and the first ends of the multiple traction chains being spaced apart in the circumferential direction of the floating platform.

[0007] In some embodiments, the sliding structure includes a sliding frame and a plurality of sliders, the plurality of sliders being evenly spaced on the sliding frame, each slider slidingly engaging with an annular slide rail, and the second ends of a plurality of traction chains being connected to the sliding frame.

[0008] In some embodiments, the sliding frame includes a plurality of sliding rods arranged at an angle, each sliding rod extending radially along the annular slide rail, the first end of each sliding rod being disposed toward the center of the annular slide rail, the second ends of the plurality of sliding rods being evenly spaced in the circumferential direction of the annular slide rail, and a slider being disposed at the second end of each sliding rod, the second end of the traction chain being connected to the sliding rod.

[0009] In some embodiments, the sliding structure further includes:

[0010] The movable adjustment component is adjustablely positioned on the sliding frame along the radial direction of the annular slide rail. Multiple movable adjustment components are evenly spaced in the circumferential direction of the annular slide rail. Each movable adjustment component is provided with a traction chain fixing part. Multiple traction ropes are provided in one-to-one correspondence with multiple movable adjustment components. The second end of each traction chain is connected to the traction chain fixing part.

[0011] In some embodiments, the movable adjustment member includes a movable sleeve sleeved on the sliding rod and a first locking member passing through the movable sleeve, the traction chain fixing part is disposed on the movable sleeve, and the end of the locking member is in contact with the sliding rod.

[0012] In some embodiments, the slider includes a sliding portion and a second locking member disposed on the sliding portion. The bottom of the sliding portion is provided with a slide groove, which is configured to cooperate with an annular slide rail. The second locking member passes through the sliding portion and contacts and cooperates with the annular slide rail.

[0013] In some embodiments, the mounting platform is slidably disposed on the bottom wall of the tank, and the dynamic testing apparatus further includes:

[0014] A vibration device is installed on the side of the wind power platform. The vibration device includes a mounting plate and a vibrator installed on the mounting plate. The mounting plate is fixedly connected to the trough.

[0015] The transmission device has its first end connected to the vibrating end of the vibrator and its second end connected to the mounting platform.

[0016] In some embodiments, a first acceleration sensor is provided at the vibration end of the vibration device, and a second acceleration sensor is provided on the mounting platform.

[0017] In some embodiments, the dynamic testing apparatus for the floating wind power platform further includes:

[0018] The gyroscope is mounted on the floating platform and located on the center line of gravity of the floating platform;

[0019] And / or, the dynamic testing apparatus for floating wind power platforms also includes:

[0020] The center of gravity indicator structure is set on the floating platform and located at the center of gravity of the floating platform;

[0021] The strain-displacement measuring device is installed outside the tank and opposite to the center of gravity indicating structure. The strain-displacement measuring device is used to acquire images of the movement position of the center of gravity indicating structure.

[0022] In some embodiments, the dynamic testing device for the floating wind power platform further includes: an air outlet device and a first wind speed detection device, wherein the air outlet device includes a mounting frame fixedly mounted on the tank and a plurality of wind turbines mounted on the mounting frame; the first wind speed detection device is mounted on the tank and located between the air outlet device and the wind power generation device.

[0023] And / or, the dynamic testing device for the floating wind power platform also includes: a second wind speed detection device, which is located on the side of the wind power generation device away from the wind outlet device;

[0024] And / or, the dynamic testing device for the floating wind power platform also includes: strain gauges, which are mounted on the wind power generation device;

[0025] And / or, the dynamic testing device for the floating wind power platform also includes: multiple flow meters, which are spaced apart in the height direction of the tank.

[0026] And / or, the dynamic testing device for the floating wind power platform also includes: a wave height meter, which is installed inside the tank;

[0027] And / or, the traction chain includes a first traction segment and a second traction segment, and a tension sensor disposed between the first traction segment and the second traction segment, the first traction segment being connected to the floating platform and the second traction segment being connected to the mounting platform.

[0028] The dynamic testing device for a floating wind power platform provided in this application includes a water tank structure. The water tank structure includes a tank body and wave-generating and wave-damping devices disposed within the tank body. The wave-generating device is used to create turbulent water flow to simulate the effects of actual ocean currents, and the wave-damping device is used to reduce wave reflection. The wind power platform includes a floating platform and a wind power generation device fixedly connected to the floating platform. The floating platform simulates the floating foundation of an actual offshore floating wind power platform, and the wind power generation device simulates the wind power generation equipment of an actual offshore floating wind power platform. An installation platform is provided on the bottom wall of the tank body, and an angle adjustment device is provided on the installation platform. The angle adjustment device is connected to the wind power platform via a traction device. When water is filled into the tank, the wind power platform will float under the action of buoyancy. The traction device can simulate the mooring system of an offshore floating wind power platform, which can provide positioning for the floating wind power platform. In this embodiment, the first ends of multiple traction chains are spaced apart in the circumferential direction of the floating platform, enabling each traction chain to apply a uniform traction force to the floating platform. The angle adjustment device includes an annular slide rail mounted on the mounting platform and a sliding structure slidably mounted on the annular slide rail. The position of the sliding structure on the annular slide rail is adjustable. The wind turbine platform is fixed to the sliding structure by a traction chain. When it is necessary to adjust the rotation direction of the wind turbine platform, the sliding structure can be rotated to slide on the annular slide rail, thereby adjusting the rotation angle of the wind turbine platform. Using the technical solution of this embodiment, the sliding structure can rotate on the annular slide rail, thus simulating the impact of different wind directions or different seismic excitation directions on the wind turbine platform. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 A schematic diagram of the structure of the dynamic testing device for the floating wind power platform provided in the embodiments of this application;

[0031] Figure 2 A three-dimensional structural diagram of the mounting platform, angle adjustment device, and wind power platform of the dynamic testing device for the floating wind power platform provided in the embodiments of this application;

[0032] Figure 3 A three-dimensional structural diagram of the mounting platform and angle adjustment device of the dynamic testing device for the floating wind power platform provided in the embodiments of this application;

[0033] Figure 4 A three-dimensional structural diagram of a portion of the angle adjustment device of the dynamic testing apparatus for a floating wind power platform provided in an embodiment of this application;

[0034] Figure 5 A schematic diagram of the assembly structure of the moving adjustment component and sliding rod of the dynamic testing device for a floating wind power platform provided in this application embodiment;

[0035] Figure 6 A schematic diagram of the air outlet device of the power testing apparatus for a floating wind power platform provided in this application embodiment;

[0036] Figure 7 A three-dimensional structural diagram of the vibration device and transmission device of the dynamic testing device for the floating wind power platform provided in the embodiments of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10-Water tank structure; 11-Tank body; 12-Wave generating device; 13-Wave damping device;

[0039] 20 - Mounting platform;

[0040] 30- Angle adjustment device;

[0041] 31-Circular slide rail;

[0042] 32-Sliding structure;

[0043] 321-Sliding bracket; 3211-Sliding rod;

[0044] 322-Slider; 3221-Sliding part; 3222-Second locking element;

[0045] 323-Moving adjustment component; 3231-Moving sleeve; 3232-Traction chain fixing part; 3233-First locking component;

[0046] 40 - Wind power platform; 41 - Floating platform; 42 - Wind power generation device;

[0047] 50 - Traction device; 51 - Traction chain; 511 - First traction section; 512 - Second traction section; 513 - Tension sensor; 52 - Length adjustment device;

[0048] 60 - Vibration device; 61 - Mounting plate; 62 - Vibrator;

[0049] 70 - Transmission device;

[0050] 81-First accelerometer sensor; 82-Second accelerometer sensor;

[0051] 90-Center of gravity indicator structure;

[0052] 100 - Air outlet device; 101 - Mounting bracket; 102 - Fan;

[0053] 111 - First wind speed detection device; 112 - Second wind speed detection device;

[0054] 120-Strain Gauge;

[0055] 130-Flow meter;

[0056] 140-Wave height meter.

[0057] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0058] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "length", "width", "upper", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. In this application, unless otherwise expressly specified and limited, the terms "installation," "fastening," "connection," "fixing," etc., should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral part; they may refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal communication of two elements or the interaction between two elements, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In this specification, the use of terms such as "optionally," "optionally implemented," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Currently, dynamic testing of floating wind turbine platforms includes testing their motion under wind conditions, underwater seismic conditions, and a combination of both. The flow-through tank technology in related techniques has the following shortcomings:

[0064] First, flow-through tanks cannot simulate the effects of earthquakes. Second, because wind direction at sea is unpredictable, the direction of the earthquake's epicenter relative to the floating wind turbine platform is also unpredictable; flow-through tanks cannot accurately represent the impact of different wind directions or different earthquake excitation directions on the wind turbine platform. Large wind tunnel laboratories and underwater vibration tables are also options, but these facilities typically have long construction periods, are expensive, require complex waterproofing measures, and have high testing costs.

[0065] This application provides a dynamic testing device for a floating wind power platform to solve the problem that physical models in related technologies are difficult to accurately reproduce the actual use scenarios of wind power platforms.

[0066] Figure 1 This is a schematic diagram of the structure of the dynamic testing device for the floating wind power platform provided in the embodiments of this application. Figure 2 A three-dimensional structural diagram of the mounting platform, angle adjustment device, and wind power platform of the dynamic testing device for the floating wind power platform provided in the embodiments of this application.

[0067] like Figure 1 and Figure 2As shown, the dynamic testing device for the floating wind power platform in this embodiment includes: a water tank structure 10, a mounting platform 20, an angle adjustment device 30, a wind power platform 40, and a traction device 50.

[0068] The water tank structure 10 includes a tank body 11, a wave-generating device 12 and a wave-damping device 13 disposed within the tank body 11, with the wave-generating device 12 located at the first end of the tank body 11 and the wave-damping device 13 located at the second end of the tank body 11; the mounting platform 20 is disposed on the bottom wall of the tank body 11; the angle adjustment device 30 includes an annular slide rail 31 disposed on the mounting platform 20 and a sliding structure 32 slidably disposed on the annular slide rail 31; the wind power platform 40 includes a floating platform 41 and a wind power generation device 42 fixedly connected to the floating platform 41; the traction device 50 includes multiple traction chains 51, with the first end of each traction chain 51 connected to the floating platform 41 and the second end of each traction chain 51 connected to the sliding structure 32, and the first ends of the multiple traction chains 51 are spaced apart in the circumferential direction of the floating platform 41.

[0069] Applying the technical solution of this embodiment, the water tank structure 10 includes a tank body 11, and a wave-generating device 12 and a wave-dissipating device 13 disposed within the tank body 11. The wave-generating device 12 is used to generate turbulent water flow to simulate the actual wave and current action at sea, and the wave-dissipating device 13 is used to reduce the reflection effect of waves, so as to make the water flow environment within the tank body 11 closer to the marine environment. The wind power platform 40 includes a floating platform 41 and a wind power generation device 42 fixedly connected to the floating platform 41, wherein the floating platform 41 is used to simulate the floating foundation of an actual offshore floating wind power platform, and the wind power generation device 42 is used to simulate the wind power generation equipment of an actual offshore floating wind power platform.

[0070] An installation platform 20 is provided on the bottom wall of the tank 11, and an angle adjustment device 30 is provided on the installation platform 20. The angle adjustment device 30 is connected to the wind power platform 40 through a traction device 50. When water is filled into the tank 11, the wind power platform 40 will float up under the action of buoyancy. The traction device 50 can simulate the mooring system of an offshore floating wind power platform, which can provide a positioning effect for the floating wind power platform. In this embodiment, the first ends of the plurality of traction chains 51 are spaced apart in the circumferential direction of the floating platform 41, so that each traction chain 51 can apply a uniform traction force to the floating platform 41.

[0071] The angle adjustment device 30 includes an annular slide rail 31 mounted on the mounting platform 20 and a sliding structure 32 slidably mounted on the annular slide rail 31. The position of the sliding structure 32 on the annular slide rail 31 is adjustable. The wind turbine platform 40 is fixed to the sliding structure 32 by a traction chain 51. When it is necessary to adjust the rotation direction of the wind turbine platform 40, the sliding structure 32 can be rotated to make it slide on the annular slide rail 31, thereby adjusting the rotation angle of the wind turbine platform 40.

[0072] Using the technical solution of this embodiment, the sliding structure 32 can rotate on the annular slide rail 31, thereby simulating the impact of different wind directions or different seismic excitation directions on the wind power generation platform.

[0073] It should be noted that the length of the tank 11 is much greater than the width of the cross-section of the tank 11.

[0074] The floating foundation of a floating wind power platform can be semi-submersible, Spar type, or tension leg type. In this embodiment, the wind power platform 40 is a semi-submersible structure. In other embodiments, the wind power platform can also be configured in other forms.

[0075] The floating platform 41 of the wind power platform 40 includes three spaced cubic pontoons and a cylindrical pontoon located at the center of the three cubic pontoons. The three cubic pontoons and the cylindrical pontoon are connected by a connecting frame, and the center of gravity of the floating platform 41 is located on the cylindrical pontoon.

[0076] During processing, the cubic and cylindrical pontoons need to be immersed in water to check for leaks. After passing the inspection, the gyroscope, the third accelerometer, and the center of gravity indicator structure 90 are installed on the cylindrical pontoon and positioned at the center of gravity of the floating platform 41.

[0077] The wind power generation device 42 includes a column and blades, and the wind power generation device 42 is fixedly connected to the wind power platform 40.

[0078] Figure 3 A three-dimensional structural diagram of the mounting platform and angle adjustment device of the dynamic testing device for the floating wind power platform provided in the embodiments of this application.

[0079] like Figures 1 to 3As shown, in this embodiment, the sliding structure 32 includes a sliding frame 321 and multiple sliders 322. The multiple sliders 322 are evenly spaced on the sliding frame 321, and each slider 322 slides in cooperation with the annular slide rail 31. The second ends of multiple traction chains 51 are all connected to the sliding frame 321. In the above structure, the multiple sliders 322 are evenly spaced on the sliding frame 321, and the second ends of multiple traction chains 51 are all connected to the sliding frame 321. Therefore, when the sliding frame 321 is rotated, the multiple sliders 322 can maintain a uniform interval, and there will be no uneven interval between the multiple sliders 322. This ensures that the multiple traction chains 51 are evenly spaced, thereby generating a uniform traction force on the wind power platform 40.

[0080] Specifically, such as Figure 3 As shown, in this embodiment, the sliding frame 321 includes a plurality of sliding rods 3211 arranged at an angle. Each sliding rod 3211 extends radially along the annular slide rail 31. The first end of each sliding rod 3211 faces the center of the annular slide rail 31. The second ends of the plurality of sliding rods 3211 are evenly spaced in the circumferential direction of the annular slide rail 31. A slider 322 is provided at the second end of each sliding rod 3211. The second end of the traction chain 51 is connected to the sliding rod 3211. The sliding frame 321 described above has a stable structure and is easy to manufacture.

[0081] like Figure 3 As shown, in this embodiment, the sliding structure 32 further includes: a movable adjustment member 323, which is adjustablely positioned on the sliding frame 321 along the radial direction of the annular slide rail 31. The movable adjustment member 323 includes multiple members, which are evenly spaced in the circumferential direction of the annular slide rail 31. Each movable adjustment member 323 is provided with a traction chain fixing part 3232. Multiple traction ropes are provided in one-to-one correspondence with multiple movable adjustment members 323. The second end of each traction chain 51 is connected to the traction chain fixing part 3232.

[0082] The movable adjustment component 323 allows the position of the second end of the traction rope on the sliding structure 32 to be adjustable, thereby enabling the dynamic test device of the floating wind power platform to simulate the effect of different extension angles of the traction rope on the wind power platform 40.

[0083] Figure 4 A three-dimensional structural diagram of a portion of the angle adjustment device of the dynamic testing apparatus for a floating wind power platform provided in an embodiment of this application; Figure 5 A schematic diagram of the assembly structure of the moving adjustment component and sliding rod of the dynamic testing device for a floating wind power platform provided in this application embodiment.

[0084] like Figures 3 to 5As shown, in this embodiment, the movable adjustment member 323 includes a movable sleeve 3231 sleeved on the sliding rod 3211 and a first locking member 3233 passing through the movable sleeve 3231. The traction chain fixing part 3232 is disposed on the movable sleeve 3231, and the end of the first locking member 3233 is in contact with the sliding rod 3211.

[0085] In the above structure, when it is necessary to change the setting position of the movable adjustment member 323, first turn the first locking member 3233 away from the sliding rod 3211, place the movable sleeve 3231 in the predetermined position, and then tighten the first locking member 3233, which makes the adjustment convenient.

[0086] Furthermore, such as Figures 3 to 5 As shown, in this embodiment, the slider 322 includes a sliding portion 3221 and a second locking member 3222 disposed on the sliding portion 3221. The bottom of the sliding portion 3221 is provided with a groove that cooperates with the annular slide rail 31. The second locking member 3222 passes through the sliding portion 3221 and contacts and cooperates with the annular slide rail 31. In the above structure, the cooperation between the sliding portion 3221 and the annular slide rail 31 ensures the smooth sliding of the sliding portion 3221. The second locking member 3222 facilitates locking the slider 322.

[0087] like Figure 1 As shown, in this embodiment, the mounting platform 20 is slidably mounted on the bottom wall of the tank 11, and the dynamic testing device also includes a vibration device 60 and a transmission device 70.

[0088] The vibration device 60 is installed on the side of the wind power platform 40. The vibration device 60 includes a mounting plate 61 fixedly installed on the trough 11 and a vibrator 62 installed on the mounting plate 61. The mounting plate 61 is fixedly connected to the trough 11.

[0089] The first end of the transmission device 70 is connected to the vibration end of the vibrator 62, and the second end of the transmission device 70 is connected to the mounting platform 20.

[0090] The vibration device 60 generates vibrational force, which is transmitted to the mounting platform 20 via the transmission device 70. The mounting platform 20 then sways, simulating the excitation scenario of an underwater earthquake. The rotation direction of the wind turbine platform 40 is adjusted by the angle adjustment device 30. The angle between the windward side of the wind turbine platform 40 and the vertical plane containing the axis of the mounting platform 20 is used to simulate the influence of different earthquake source directions on the wind turbine platform 40. The vibrator 62 can be connected to the transmission device 70 via a connecting plate. The transmission device can be a transmission rod, which is symmetrically arranged along the axis of the vibrator 62.

[0091] It should be noted that the axis of the vibrator 62 and the axis of the mounting platform 20 are located in the same vertical plane.

[0092] Figure 7 A three-dimensional structural diagram of the vibration device and transmission device of the dynamic testing device for the floating wind power platform provided in the embodiments of this application.

[0093] like Figures 1 to 3 as well as Figure 7 As shown, in this embodiment, a first acceleration sensor 81 is provided at the vibration end of the vibration device 60, and a second acceleration sensor 82 is provided on the mounting platform 20. The first acceleration sensor 81 is used to accurately measure the acceleration of the vibrator 62. The second acceleration sensor 82 is used to measure the acceleration of the mounting platform 20. The acceleration signal measured by the second acceleration sensor 82 is used as the seismic acceleration signal input to the wind power platform 40.

[0094] Furthermore, by comparing the measurement results of the first acceleration sensor 81 with those of the second acceleration sensor 82, the loss of vibration force under the resistance of water can be known, thereby reflecting the flow state of the water body.

[0095] like Figure 2 As shown, in this embodiment, the dynamic testing device for the floating wind power platform also includes a gyroscope and a third accelerometer. The gyroscope is mounted on the floating platform 41 and located on the center line of gravity of the floating platform 41. The gyroscope can be used to measure the rotational angular velocity and motion acceleration of the wind power platform 40 in roll, pitch, and yaw.

[0096] like Figure 2 As shown, in this embodiment, the dynamic testing device for the floating wind power platform further includes: a center of gravity indicator structure 90 and a strain displacement measuring device. The center of gravity indicator structure 90 is disposed on the floating platform 41 and located at the center of gravity of the floating platform 41; the strain displacement measuring device is disposed outside the tank 11 and opposite to the center of gravity indicator structure 90, and the strain displacement measuring device is used to acquire images of the movement position of the center of gravity indicator structure 90.

[0097] The strain displacement measuring device is a non-contact measuring device. Since the tank 11 and the water injected into the tank 11 are transparent, the strain displacement measuring device can be set outside the tank 11 to acquire data on the center of gravity indicator structure 90 at high frame rate and high precision. By converting the graphic information of the front and rear position and deformation of the center of gravity indicator structure 90 into digital information through vision software, the changes in the sway, longitudinal sway and heave of the wind power platform 40 can be obtained.

[0098] like Figure 1As shown, in this embodiment, the dynamic testing device for the floating wind power platform further includes: a wind outlet device 100 and a first wind speed detection device 111. The wind outlet device 100 includes a mounting frame 101 fixedly mounted on the tank 11 and multiple wind turbines 102 mounted on the mounting frame 101. The first wind speed detection device 111 is mounted on the tank 11 and located between the wind outlet device 100 and the wind power generation device 42. The wind outlet device 100 is used to simulate wind force and speed at sea for the floating wind power platform. When it is necessary to change the wind direction, it is not necessary to adjust the position of the wind outlet device 100; only the angle of the wind power platform 40 needs to be adjusted.

[0099] The first wind speed detection device 111 can detect wind speed, making it convenient for operators to adjust the wind intensity.

[0100] Figure 6 A schematic diagram of the air outlet device of the power testing apparatus for a floating wind power platform provided in this application embodiment;

[0101] like Figure 1 and Figure 6 As shown, in this embodiment, the dynamic testing device for the floating wind power platform further includes a second wind speed detection device 112, which is located on the side of the wind power generation device 42 away from the wind outlet device 100. The second wind speed detection device 112 can increase the number of wind speed detection points, thereby allowing for multi-point measurement of wind speed.

[0102] like Figure 1 and Figure 2 As shown, in this embodiment, the dynamic testing device for the floating wind power platform also includes a strain gauge 120, which is disposed on the wind power generation device 42. Specifically, the strain gauge 120 can be disposed on the column of the wind power generation device 42 or on the blade, thereby obtaining the deformation of the wind power generation device 42 and the stress on the blade.

[0103] like Figure 1 As shown, in this embodiment, the dynamic testing device for the floating wind power platform also includes multiple flow meters 130, which are spaced apart along the height of the tank 11. The multiple flow meters 130 are used to acquire flow velocity parameters for different water bodies and different processes.

[0104] like Figure 1 As shown, in this embodiment, the dynamic testing device for the floating wind power platform further includes a wave height meter 140, which is installed inside the tank 11 to obtain the wave height parameters of the water flow inside the tank.

[0105] like Figure 1 and Figure 2As shown, in this embodiment, the traction chain 51 includes a first traction segment 511 and a second traction segment 512, and a tension sensor 513 disposed between the first traction segment 511 and the second traction segment 512. The first traction segment 511 is connected to the floating platform 41, and the second traction segment 512 is connected to the mounting platform 20. The tension sensor 513 is used to acquire the tension parameters of the traction chain 51.

[0106] like Figure 1 and Figure 2 As shown, in this embodiment, the traction device 50 further includes a length adjustment device 52, through which the first end of the traction chain 51 is connected to the floating platform 41. The length adjustment device 52 can be used to adjust the length of the traction chain 51, thereby enabling the wind power platform 40 to be in different floating positions, thus facilitating the analysis of the motion state of the wind power platform 40 when it is in different floating positions.

[0107] Compared with the physical experimental models in related technologies, this embodiment has the following advantages:

[0108] 1. The experimental device proposed in this embodiment has a short construction period, low cost, simple structure, and high reliability. It can simulate the multi-field coupled marine environment under the action of seismic load, wind load, and wave and current load, and can accurately reflect the dynamic response and hydrodynamic performance of the prototype structure under actual sea conditions. It can provide strong support for subsequent structural optimization and design.

[0109] 2. This application can realize hydrodynamic characteristics and dynamic response analysis tests of various types of offshore wind turbine floating foundations, such as semi-submersible, Spar, or tension leg structures. Through the same test method, the structural performance of different types of floating offshore wind turbine platforms can be fairly compared.

[0110] 3. This embodiment employs a movable adjusting component, allowing the second end of the traction chain to be slidably adjusted. This simulates the effect of different anchor cable angles and the angle between the anchor cable and the sea level on the floating wind turbine platform, enabling the analysis of a series of key parameters. An angle adjustment device is installed, allowing the sliding frame to rotate freely on a circular slide rail via a slider. Once rotated to a set angle, it is fixed by a second locking component, simulating the effect of different wind directions or seismic excitation directions on the wind turbine platform 40.

[0111] 4. The air outlet device 100 in this embodiment uses an array of fans 102, which has a simple structure, is easy to install, and has low cost. It is installed above the water tank, which can effectively avoid waterproofing problems. This device can simulate the stress of offshore wind load on the floating wind turbine tower and blades.

[0112] 5. In this embodiment, a vibration device 60 is used to simulate an undersea earthquake. The vibration device 60 is connected to the mounting platform 20 through a transmission device 70. The bottom of the mounting platform 20 is equipped with guide rails and guide sliders. The guide rails ensure the consistency and coordination of the movement of the vibration device 60 and the mounting platform 20. Compared with traditional large vibration tables, the test cost is greatly reduced. All the connecting parts of the transmission device 70 are rigidly connected to provide sufficient stability. The axis of the vibrator 62 and the axis of the mounting platform 20 are located in the same vertical plane to avoid eccentric loads on the structure and reduce the loss of ground motion.

[0113] 6. In this embodiment, a gyroscope and a non-contact strain-displacement measurement device are used to measure the motion attitude of the floating wind turbine test model in six degrees of freedom, namely roll, pitch, yaw, sway, heave, and sway. This invention adjusts the initial pretension of the traction chain through a length adjustment device and monitors the tension of the traction chain in real time by setting up multiple sets of tension sensors. It realistically simulates and analyzes the dynamic response of the traction chain under multi-field coupling, providing a reliable reference for the design of the mooring system of actual floating offshore wind power.

[0114] Therefore, this embodiment provides a dynamic testing device for a floating wind power platform. This testing device can accurately reflect the stress characteristics of the prototype structure under actual sea conditions and can provide strong support for the structural optimization and design of the prototype floating offshore wind turbine platform.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power test device for a floating wind turbine platform, characterized in that, The utility model relates to a wave making and breaking device, and more particularly to a wave making and breaking device for wind power platform. The wave making and breaking device comprises a tank structure (10), a mounting table (20), an angle adjusting device (30), a wind power platform (40) and a traction device (50). The tank structure (10) comprises a tank body (11), a wave making device (12) and a wave breaking device (13). The mounting table (20) is arranged on the bottom wall of the tank body (11). The angle adjusting device (30) comprises a ring-shaped sliding rail (31) arranged on the mounting table (20) and a sliding structure (32) slidably arranged on the ring-shaped sliding rail (31). The wind power platform (40) comprises a floating table (41) and a wind power generation device (42) fixedly connected with the floating table (41). The traction device (50) comprises a plurality of traction chains (51). Each first end of the traction chains (51) is connected with the floating table (41), and each second end of the traction chains (51) is connected with the sliding structure (32). The plurality of first ends of the traction chains (51) are arranged at intervals in the circumferential direction of the floating table (41).

2. The power test device of the floating wind power platform according to claim 1, characterized in that, The sliding structure (32) comprises a sliding frame (321) and a plurality of sliding blocks (322). The plurality of sliding blocks (322) are arranged at intervals on the sliding frame (321). Each sliding block (322) is in sliding fit with the ring-shaped sliding rail (31). The plurality of second ends of the traction chains (51) are connected with the sliding frame (321). The sliding structure (32) further comprises a plurality of movement adjusting members (323). The movement adjusting members (323) are arranged on the sliding frame (321) in a position-adjustable manner along the radial direction of the ring-shaped sliding rail (31). Each movement adjusting member (323) is provided with a traction chain fixing portion (3232). The plurality of traction ropes are arranged in one-to-one correspondence with the plurality of movement adjusting members (323). Each second end of the traction chains (51) is connected with the traction chain fixing portion (3232). The sliding frame (321) comprises a plurality of sliding rods (3211) arranged at angles. Each sliding rod (3211) extends along the radial direction of the ring-shaped sliding rail (31). Each first end of the sliding rods (3211) is arranged towards the center of the ring-shaped sliding rail (31). The second ends of the plurality of sliding rods (3211) are arranged at intervals in the circumferential direction of the ring-shaped sliding rail (31). Each sliding rod (3211) is connected with the traction chain (51).

3. The power test device of the floating wind power platform according to claim 2, characterized in that, The moving adjusting piece (323) comprises a moving sleeve (3231) sleeved on the sliding rod (3211) and a first locking piece (3233) penetrating through the moving sleeve (3231), the traction chain fixing part (3232) is arranged on the moving sleeve (3231), and end portions of the locking piece are in contact with the sliding rod (3211).

4. The power test device of the floating wind power platform according to claim 1, characterized in that, The sliding block (322) comprises a sliding part (3221) and a second locking piece (3222) arranged on the sliding part (3221), the bottom of the sliding part (3221) is provided with a sliding groove matched with the annular sliding rail (31), and the second locking piece (3222) penetrates through the sliding part (3221) and is in contact with the annular sliding rail (31).

5. The power test device of the floating wind power platform according to claim 1, characterized in that, The mounting table (20) is slidably arranged on the bottom wall of the groove body (11), and the power test device further comprises: a vibration device (60) arranged on the side of the wind power platform (40), the vibration device (60) comprising a mounting plate (61) and a vibrator (62) arranged on the mounting plate (61), the mounting plate (61) being fixedly connected with the groove body (11); a transmission device (70), a first end of the transmission device (70) being connected with a vibration end of the vibrator (62), and a second end of the transmission device (70) being connected with the mounting table (20).

6. The power test device of the floating wind power platform according to claim 5, characterized in that, The vibration end of the vibration device (60) is provided with a first acceleration sensor (81), and the mounting table (20) is provided with a second acceleration sensor (82).

7. The power test device of the floating wind power platform according to claim 1, characterized in that, The power test device of the floating wind power platform further comprises: a gyroscope and a third acceleration sensor, both of which are arranged on the floating table (41) and located at the center of gravity of the floating table (41); and / or, the power test device of the floating wind power platform further comprises: a center of gravity indicating structure (90) arranged on the floating table (41) and located at the center of gravity of the floating table (41), and a strain displacement measuring device arranged outside the groove body (11) and opposite to the center of gravity indicating structure (90), the strain displacement measuring device being used to collect images of the moving position of the center of gravity indicating structure (90).

8. The power test device of the floating wind power platform according to any one of claims 1 to 7, characterized in that, the power test device of the floating wind power platform further comprises an air outlet device (100) and a first wind speed detection device (111), wherein the air outlet device (100) comprises a mounting frame (101) fixedly arranged on the groove body (11) and a plurality of fans (102) arranged on the mounting frame (101); and the first wind speed detection device (111) is arranged on the groove body (11) and located between the air outlet device (100) and the wind power generation device (42). And / or, the power test device of the floating wind power platform further comprises a second wind speed detection device (112) arranged on a side of the wind power generation device (42) away from the air outlet device (100); And / or, the power test device of the floating wind power platform further comprises a strain gauge (120) arranged on the wind power generation device (42); And / or, the power test device of the floating wind power platform further comprises a plurality of flowmeters (130) arranged at intervals in the height direction of the tank body (11); And / or, the power test device of the floating wind power platform further comprises a wave height meter (140) arranged in the tank body (11); And / or, the traction chain (51) comprises a first traction section (511), a second traction section (512), and a tension sensor (513) arranged between the first traction section (511) and the second traction section (512), the first traction section (511) is connected with the floating platform (41), and the second traction section (512) is connected with the mounting platform (20).

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