A mud floating offshore wind turbine system in cooperation with marine environment monitoring

Abstract

The present application relates to offshore wind turbine technology field, especially to a kind of mud floating offshore wind turbine system of cooperation marine environment monitoring.The structural system includes upper wind turbine, wind turbine master control system, mud floating dual-purpose foundation, marine environment monitoring equipment, anchoring system.Integrated marine environment monitoring equipment, wind gauge is installed at wind turbine cabin, wave flow monitor is installed on water surface, can real-time monitoring wind direction, wind speed, wave, tide, temperature and other key marine parameters, realize monitoring data collection and transmission.The structure is in suspended state at foundation when normally used, through the environmental forecast of monitoring equipment, the main control system of wind turbine can receive information in time and carry out suspended state and mud floating state conversion, guarantee the safety and stability of structural system, this structural system is crucial for optimizing the operation and maintenance of wind farm, also provides valuable data resources for marine scientific research.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore wind turbines, in particular to a mud floating offshore wind turbine system cooperating with marine environment monitoring. BACKGROUND

[0002] With the increasingly prominent energy crisis, offshore wind power as a renewable energy has become an important part of the current energy structure and an important energy to solve the energy crisis. In the related art, the mud floating offshore wind turbine cannot monitor the marine environment in real time.

[0003] Therefore, there is an urgent need to provide a mud floating offshore wind turbine system cooperating with marine environment monitoring to solve the above technical problems. SUMMARY

[0004] The present application provides a mud floating offshore wind turbine system cooperating with marine environment monitoring, which can monitor the marine environment in real time.

[0005] The present application provides a mud floating offshore wind turbine system cooperating with marine environment monitoring, which can monitor the marine environment in real time.

[0006] Advantages:

[0007] According to the mud floating offshore wind turbine system cooperating with marine environment monitoring provided by the present application, the marine environment monitoring equipment, i.e. the wind meter installed at the wind turbine cabin and the wave flow monitoring instrument installed on the water surface, can monitor key marine parameters such as wind direction, wind speed, wave, tide, temperature, etc. in real time, realize monitoring data collection and transmission; the foundation is in a suspended state during normal use, through environmental prediction of the monitoring equipment, information can be received in time and conversion between the suspended state and the mud floating state can be carried out, to ensure the safety and stability of the structural system. This structural system is crucial for optimizing the operation and maintenance of the wind farm, and also provides valuable data resources for marine scientific research. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0009] Figure 1 A structural schematic diagram of the mud-floating offshore wind turbine in the mud-floating state for the cooperative marine environment monitoring of the embodiment of the present application;

[0010] Figure 2 A front view of the mud-floating offshore wind turbine shown in Figure 1

[0011] Figure 3 A structural schematic diagram of the mud-floating offshore wind turbine in the mud-floating state for the cooperative marine environment monitoring of the embodiment of the present application;

[0012] Figure 4 A front view of the mud-floating offshore wind turbine shown in Figure 3

[0013] Figure 5 A partial schematic diagram of the mud-floating offshore wind turbine shown in Figure 1

[0014] A structural schematic diagram of the foundation in the mud-floating offshore wind turbine shown in Figure 6 Figure 1 A structural schematic diagram of the foundation in the mud-floating offshore wind turbine shown in

[0015] Figure 7 An enlarged schematic diagram of the foundation shown in

[0016] Figure 8 Figure 7 An enlarged schematic diagram of the foundation shown in

[0017] Figure 9 A structural schematic diagram of the anchor stock in the mud-floating offshore wind turbine shown in Figure 1 Reference signs:

[0018] 1-wind turbine; 2-tower; 3-foundation; 4-base; 41-groove; 42-partition plate; 5-lateral anchor chain; 6-anchor stock; 7-first vertical anchor chain; 8-second vertical anchor chain; 9-wind meter; 10-wave flow monitor; 11-third vertical anchor chain;

[0019]

[0020] ​​​​​1a-grab of the mechanical arm; 2a-vibrating rod; 3a-suction pump; 4a-camera; 5a-spiral blade; 6a-air outlet; 7a-loop belt; 8a-first water outlet; 9a-water inlet; 10a- booster; 11a-second water outlet; 12a-flushing pipe. DETAILED DESCRIPTION

[0021] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0022] The mud-floating offshore wind turbine refers to a wind turbine foundation that can be converted between a floating state and a mud-floating state. The floating state refers to that the wind turbine foundation is suspended in the sea surface or seawater. In this state, the working height of the upper wind turbine is high, which is conducive to improving the power generation efficiency and is suitable for good marine environment. The mud-floating state refers to that the wind turbine foundation is fixed in the mud layer of the seabed. In this state, the working height of the upper wind turbine is low, which is conducive to improving the safety and is suitable for poor marine environment.

[0023] As shown in Figures 1 to 5 , the embodiment of the present application provides a mud-floating offshore wind turbine system cooperating with marine environment monitoring, which comprises a wind turbine 1, a tower 2, a foundation 3 and a base 4 connected in sequence from top to bottom, the foundation 3 is connected with a lateral anchor chain 5 and an anchor stock 6 in sequence, the foundation 3 and the base 4 are connected with a first vertical anchor chain 7, the tower 2 is provided with a wind meter 9, the wind meter 9 is used for monitoring wind speed and direction, the anchor stock 6 is connected with a second vertical anchor chain 8 and a wave flow monitor 10 in sequence, the foundation 3 is connected with a third vertical anchor chain 11 and the wave flow monitor 10 in sequence, the wave flow monitor 10 is used for monitoring wave, tide and temperature, and the working state of the mud-floating offshore wind turbine foundation comprises a floating state and a mud-floating state.

[0024] In the embodiment, the marine environment monitoring equipment, i.e. the wind meter 9 is installed at the wind turbine cabin, and the wave flow monitor 10 is installed on the water surface, which can monitor key marine parameters such as wind direction, wind speed, wave, tide and temperature in real time, realize monitoring data collection and transmission; in normal use, the foundation is in the floating state, through the environmental prediction of the monitoring equipment, information can be received in time and the conversion between the floating state and the mud-floating state can be carried out, so as to ensure the safety and stability of the structural system. This structural system is very important for optimizing the operation and maintenance of the wind farm, and also provides valuable data resources for marine scientific research.

[0025] As shown in Figure 2 and Figure 4As shown, in one embodiment of the present invention, in the suspended state, all wave and current monitors 10 float on the sea surface; in the mud-floating state, some of the wave and current monitors 10 float on the sea surface, while the other part of the wave and current monitors 10 are below the sea surface.

[0026] In one embodiment of the present invention, a main control system (not shown in the figure) electrically connected to an anemometer 9 and a wave and current monitor 10 is installed inside the tower 2. The main control system is located below the sea surface. With this configuration, the different heights of the foundation when the dual-purpose mud-floating foundation switches between states can be used to monitor the marine environment from the sea surface to a certain depth below the sea surface.

[0027] In this embodiment, the foundation is in a suspended state during normal use. When the marine environment monitoring equipment detects severe marine conditions, such as typhoons or large waves, the monitoring system will automatically issue an alarm and transmit the information to the wind turbine main control system. The wind turbine main control system will then determine the cause and, by filling the air-water replacement structure inside the pontoon of the mud-floating foundation with water, the foundation will gradually sink to the mud surface. The anchor chain extension system will tighten the anchor chain until the foundation is connected to the base, the anchor chain is taut, and the foundation will transition to a mud-floating state. When the marine environment returns to normal or falls below a safe threshold, the alarm will be deactivated, and the information will be transmitted to the wind turbine main control system. Air will then be filled into the air-water replacement structure inside the pontoon of the mud-floating foundation to make the foundation float. The anchor chain extension system will extend the anchor chain, returning the foundation to a suspended state, while the anchor chain remains taut. It is essential to ensure that the wind turbine main control system is below the water surface when the foundation is in a mud-floating state to prevent damage from water.

[0028] Marine environmental monitoring equipment can monitor the environment of the wind farm area in real time over a long period using sensors, and transmit the monitored data to the monitoring center. By analyzing and processing the monitoring data, the patterns and trends of environmental changes during the operation of the floating wind turbine can be obtained. The data can also be transmitted to the wind turbine's main control system, enabling the system to take appropriate actions.

[0029] When adverse marine conditions are detected, and environmental parameters exceed preset safety thresholds, the system automatically issues an early warning signal, transmitting the information to the wind turbine's main control system. The main control system then determines whether to switch the foundation to a floating state. Once the marine environment returns to normal or falls below the safety threshold, the alarm is deactivated, and the foundation is switched back to a suspended state. Simultaneously, long-term marine environmental forecasts can be recorded to predict future sea conditions and allow for timely state adjustments.

[0030] Humans cannot perform long-term observation and monitoring, making it impossible to know and predict the operation and structural changes of wind turbines in a timely manner. By using cameras on monitoring equipment to observe the operating status of wind turbines, and to monitor the quality and damage of the floating platform and blades, the data can be transmitted to the land in a timely manner for timely maintenance, reducing the number of offshore inspections and maintenance costs.

[0031] Based on the wind direction and speed data monitored by the wind gauge connected on the cabin, the data is transmitted to the fan through optical fiber, etc., so that the fan can adjust the blade angle, blade speed and other operating parameters in real time to ensure that the fan is always in the best operating state, maximizes the use of wind energy resources and improves power generation efficiency.

[0032] The general monitoring device is powered by a battery, which needs to be replaced regularly. In the deep sea, the cost is high, so a cable can be laid to connect to the power supply system of the fan to directly power the fan. The fan power supply is relatively more stable, which can reduce the situation that the monitoring device cannot work due to power failure, and ensure the continuity of the monitoring data.

[0033] The mud floating offshore wind turbine can be integrally towed to the designated sea area after being assembled on land and connected with the anchoring system, or can be towed to the designated sea area in modules and then installed and completed, and finally the entire assembled wind turbine is connected with the marine environment monitoring device. When the fan of the present application fails, the stored environmental monitoring data can be combined to comprehensively analyze the failure cause and provide more accurate basis for maintenance decision. The present application is connected by multiple floating buoys and mud floating suspension foundations, which improves the stability of the foundation structure.

[0034] The foundation 3 includes a connecting component moving up and down along the tower 2, a plurality of inclined struts connected with the connecting component, a side float connected with each inclined strut, a side rod connected with every two adjacent side floats, a cross rod connected with each side float, a middle float 6 connected with all cross rods, and a bottom plate connected with each side float. The middle float is arranged at the end of the tower, and the bottom plate is used to abut against the base. The side float and the middle float are both provided with an angle sensor and an air-water displacement valve (not shown in the figure). The angle sensor is used to monitor the inclination change of the float ball, and the air-water displacement valve is used to adjust the air-water ratio in the float ball based on the inclination change to adjust the center of gravity of the float ball. The side float is sequentially connected with a lateral anchor chain 5 and an anchor stock 6, and the side float and the base 4 are connected with a first vertical anchor chain 7.

[0035] Specifically, the bottom plate and the base 4 are connected by the first vertical anchor chain 7. When the structure is in a suspended state, the foundation 3 and the base 4 have a certain vertical distance. When the structure is in a mud floating state, the foundation 3 is completely seated on the base 4, and the first vertical anchor chain 7 is completely tightened. The lateral anchor chain 5 and the first vertical anchor chain 7 are suitable for different anchor chains to ensure that the structural system realizes safe and efficient state conversion. The lateral anchor chain 5 can change the direction and position of the anchor chain through the lifting ring of the anchoring foundation to better adapt to the state change of the structural system and ensure the best position of the lateral anchor chain 5.

[0036] In some embodiments, the bottom of the middle float is spherical, which facilitates the contact between the entire structure in the mud floating state and the seabed, and is also conducive to the floating when the mud floating state is converted to the suspended state.

[0037] As Figure 7 and Figure 8 As shown in one embodiment of the present application, the inside of the base 4 is a hollow structure, which is suitable for different seabed topography and can be widely used in different marine topography.

[0038] In one embodiment of the present application, the bottom edge of the base 4 is provided with a sawtooth structure, which facilitates the installation of the base 4 into the mud and increases the subsequent load-bearing performance of the base 4.

[0039] In one embodiment of the present application, a plurality of grooves 41 are provided on the base 4, and the grooves 41 are connected with the foundation 3 through the first vertical anchor chain 7.

[0040] In one embodiment of the present application, the inner edge of the base 4 is provided with a girdle 7a, and the height of the girdle 7a exceeds the main part of the base 4 to prevent silt and other impurities from entering.

[0041] In the related art, a large amount of silt and stones will appear at the bottom of the base during the installation and the conversion from the suspended state to the mud-floating state of the mud-floating offshore wind turbine, which is not conducive to the embedding of the foundation into the base.

[0042] To solve the technical problem, in one embodiment of the present application, a dredging device is further included, which comprises:

[0043] A mechanical arm grab 1a is arranged on the outer wall of the base 4 and is used to remove the stones and upper silt in the inside of the base 4;

[0044] A vibrating rod 2a is arranged in the inside of the base 4 and is used to loosen the lower silt in the inside of the base 4;

[0045] A silt suction pump 3a is arranged on the girdle 7a and is used to suck out the loosened lower silt to the outside of the base 4.

[0046] In this embodiment, during the installation, the device is first used to dredge the seabed, which facilitates the smooth installation of the mud-floating foundation 3 and the base 4. When the suspended state needs to be converted to the mud-floating state in the extreme marine environment, the device first dredges the base 4, so that the foundation 3 can be completely embedded into the base 4. This technology has the characteristics of complete dredging, wide application range and high operation efficiency, and provides a strong guarantee for the stable operation and smooth state conversion of the offshore wind power foundation 3.

[0047] Specifically, during the transition of foundation 3 from a suspended state to a mud-floating state, a large amount of silt at the bottom of base 4 needs to be cleared before foundation 3 can be fully integrated with base 4. At this time, a remotely controlled robotic arm grab bucket 1a is used to roughly remove large clumps of silt and rocks accumulated on the upper part. Then, a vibrator 2a is activated to loosen the silt accumulated inside base 4. Finally, a mud pump 3a is used to suck out the loosened silt, completing the silt removal work on base 4 and allowing the structure to better complete the state transition. When the structure is in a mud-floating state, the robotic arm grab bucket 1a is located on the side wall of base 4, leaving space for foundation 3 to sink.

[0048] In one embodiment of the present invention, the bottom of the vibrating rod 2a has a conical structure (not shown in the figure) to facilitate better insertion into the mud.

[0049] like Figure 6 As shown, in one embodiment of the present invention, a spiral blade 5a is provided on the bottom outer periphery of the base 3, which can rotate as the base 3 floats and sinks.

[0050] In this embodiment, a spiral blade 5a is installed at the bottom of the foundation 3. A vertical anchor chain is connected to the central axis of the spiral blade 5a. The spiral blade 5a can rotate as the foundation 3 rises and falls, and can also be controlled by a motor. The spiral blade 5a can remove marine organisms attached to the lower part of the foundation 3, as well as remove and cut flexible plants such as aquatic plants that may entangle or adhere to the anchor chain, preventing the influence of impurities when the anchor chain is raised or lowered, and ensuring that the structure can smoothly complete the state transition.

[0051] In one embodiment of the present invention, each groove 41 corresponds to a spiral blade 5a, and the inner wall surface of each groove 41 is provided with multiple air vents 6a to centrally exhaust air outward to remove the silt deposited in that part, prevent excessive silt accumulation, and prevent the anchor chain from operating normally. This plays a crucial role in maintaining the stable state transition of the mud-floating structure.

[0052] In one embodiment of the present invention, the base 4 is provided with a plurality of compartment plates 42. The compartment plates 42 are used to divide the cavity inside the base 4 into a plurality of compartments. Each compartment is provided with a vibrating rod 2a and each compartment corresponds to a robotic arm grab bucket 1a and a mud suction pump 3a.

[0053] In this embodiment, the base 4 adopts a compartmentalized approach, dividing the hexagonal structure of the foundation 3 into six equal compartments via compartmentalized plates 42. Each compartment independently undertakes dredging work, reducing the difficulty of dredging the entire structure. Each compartment is equipped with a sludge suction pump 3a, one end of which is connected to the interior of the compartment of the base 4, and the other end is connected to the external marine environment. The sludge suction pump 3a, in conjunction with the vibrating rod 2a, can completely suck out the sludge that is difficult to remove by the robotic arm grab bucket 1a, ensuring the cleanliness of the base 4 and providing bottom space for the structure to transition from a suspended state to a mud-floating state, allowing the foundation 3 to be completely fitted into the base 4.

[0054] In some embodiments, the ring belt 7a is connected to the compartment plate 42.

[0055] In one embodiment of the present invention, a micro pump (not shown in the figure) is provided inside the ring 7a, and a plurality of first water outlet holes 8a connected to the micro pump are provided on the outside of the ring 7a, so as to flush the silt deposited on the upper part of the base 4 by spraying high-pressure water flow, so as to prevent the silt from accumulating and hindering the sinking of the foundation 3.

[0056] like Figure 9 As shown, in one embodiment of the present invention, the side wall of the anchor 6 is provided with a water inlet hole 9a, the inside is provided with a booster 10a, and the bottom wall is provided with a second water outlet hole 11a. The water inlet hole 9a, the booster 10a and the second water outlet hole 11a are connected in sequence.

[0057] In this embodiment, during the sinking of the anchor 6, the water inlet 9a draws in water. When the anchor 6 is about to reach the mud surface, the second water outlet 11a opens and uses the booster 10a to spray high-pressure water outward to flush the silt on the seabed, loosening and suspending the seabed mud and sand layer. This has a good effect on softer mud and sediment, thereby making the seabed surface where the anchor 6 is located smoother.

[0058] In one embodiment of the present invention, a flushing pipe 12a is provided on the top of the anchor 6, and the water inlet 9a, the booster 10a and the flushing pipe 12a are connected in sequence, with the outlet of the flushing pipe 12a facing the lateral anchor chain 5.

[0059] In this embodiment, the lateral anchor chain 5 contacts the transmission gear set in the anchor 6. Two flushing pipes 12a are installed on the upper part of the anchor 6. The flushing pipes 12a can use the booster 10a to spray high-pressure water to flush away marine organisms attached to the lateral anchor chain 5. At the same time, it cleans the lateral anchor chain 5 and prevents the lateral anchor chain 5 from rusting and the large amount of marine organisms attached, which would make it difficult for the lateral anchor chain 5 to retract normally.

[0060] like Figure 6As shown, in one embodiment of the present application, a camera 4a is arranged at the center bottom of the foundation 3, which is used for visual operation of the mechanical arm grab bucket 1a in combination with the remote control system of the back end (not shown in the figure).

[0061] In this embodiment, an underwater visual camera 4a is installed at the lower spherical ball of the foundation 3. When the foundation 3 is converted from the floating state to the mud floating state, the foundation 3 is lowered. When the underwater camera 4a of the base 4 can visualize to a certain range and clarity, the staff remotely controls the mechanical arm grab bucket 1a through the computer terminal, and in combination with the underwater visual camera 4a, the dredging and desilting work can be intuitively and conveniently performed. When the desilting work is completed, the mechanical arm grab bucket 1a is rotated again to the outside of the foundation 3 to leave space for the sinking of the foundation 3. The underwater visual camera 4a can monitor and observe the silt accumulation state at the bottom of the mud floating structure in real time, and cooperate with the computer-aided equipment to control the mechanical arm grab bucket 1a to desilt the base 4 in a targeted manner. This technology can make the desilting work intuitive and convenient, and reduce the difficulty of desilting.

[0062] In some embodiments, the mechanical arm grab bucket 1a can be remotely controlled by the computer terminal through the digital twinning technology, which is not described here.

[0063] It should be noted that in this document, the terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0064] Finally, it should be noted that the above description is only for the preferred embodiments of the present application, and is only used to illustrate the technical solutions of the present application, and does not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application are included in the protection scope of the present application.

Claims

1. A mud floating offshore wind turbine system in cooperation with marine environment monitoring, characterized in that, The mud floating offshore wind turbine foundation comprises a fan, a tower drum, a foundation and a base connected in sequence from top to bottom, the foundation is connected with a lateral anchor chain and an anchor stock in sequence, a first vertical anchor chain is connected between the foundation and the base, a wind meter is arranged on the tower drum, the wind meter is used for monitoring wind speed and direction, the anchor stock is connected with a second vertical anchor chain and a wave flow monitor in sequence, the foundation is connected with a third vertical anchor chain and a wave flow monitor in sequence, the wave flow monitor is used for monitoring waves, tides and temperature, and the working state of the mud floating offshore wind turbine foundation comprises a floating state and a mud floating state. In the floating state, all the wave flow monitors float on the sea surface, and in the mud floating state, part of the wave flow monitors float on the sea surface and the other part of the wave flow monitors are below the sea surface. A plurality of grooves are arranged on the base, the grooves are connected with the foundation through the first vertical anchor chain, the inner edge of the base is provided with a ring belt, and the height of the ring belt exceeds the main body part of the base. The mud floating offshore wind turbine foundation further comprises a dredging device, the dredging device comprises: A mechanical arm grab bucket arranged on the outer wall of the base is used for removing stones and upper silt in the interior of the base; A vibrating rod arranged in the interior of the base is used for loosening lower silt in the interior of the base; A silt suction pump arranged on the ring belt is used for sucking out the loosened lower silt to the outside of the base.

2. The system of claim 1, wherein, A main control system electrically connected with the wind meter and the wave flow monitor is arranged in the tower drum, and the main control system is below the sea surface.

3. The system of claim 1, wherein, The interior of the base is a hollow structure.

4. The system of claim 1, wherein, The outer peripheral bottom of the foundation is provided with a spiral blade capable of rotating with the rising and sinking of the foundation.

5. The system of claim 4, wherein, Each groove corresponds to one spiral blade, and the inner wall surface of each groove is provided with a plurality of air outlets.

6. The system of claim 1, wherein, A micro pump is arranged in the interior of the ring belt, and a plurality of first water outlets connected with the micro pump are arranged on the outer side of the ring belt.

7. The system of claim 6, wherein, A water inlet is arranged on the side wall of the anchor stock, a booster is arranged in the interior of the anchor stock, and a second water outlet is arranged on the bottom wall, and the water inlet, the booster and the second water outlet are connected in sequence. A flushing pipe is arranged on the top of the anchor stock, the water inlet, the booster and the flushing pipe are connected in sequence, and the outlet of the flushing pipe faces the lateral anchor chain.

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