96 results about "Tidal current energy" patented technology

The invention provides a tidal current energy water turbine intelligent design method based on a generator and a predictor and a water turbine structure optimization design framework. According to the method, a compact generator is obtained by training a variational self-encoding generative adversarial network and is used for parametric modeling of tidal current energy water turbine rotor blades, and an efficient performance predictor based on the combination of an artificial neural network and transfer learning is established to realize intelligent prediction of blade performance. The generator and the predictor are coupled with the multi-target genetic algorithm, efficient design of the tidal current energy water turbine blade is achieved, the performance of the tidal current energy water turbine blade can be rapidly predicted, and then efficient optimization design of the tidal current energy water turbine is achieved.

The invention discloses a sealing performance testing device and testing system for a dynamic seal, relates to the technical field of tidal current energy power generation and dynamic seal performance testing, is used for detecting the sealing performance of the dynamic seal of a tidal current energy power generator in seawater, and is characterized in that a sealed cabin is provided with an inner cavity and a testing hole communicated with the inner cavity. The pressure adjusting assembly is used for adjusting the pressure of the fluid medium in the inner cavity. The first end of the rotating shaft penetrates through the testing hole and extends into the inner cavity, the rotating shaft can rotate around the axis of the rotating shaft relative to the sealing cabin, a sealing gap is formed between the peripheral wall face of the rotating shaft and the inner wall face of the testing hole, the rotating shaft is sleeved with a dynamic seal, and the dynamic seal is at least partially located in the sealing gap. The driving assembly is used for driving the rotating shaft to rotate. The collecting assembly is used for collecting at least one of the pressure value of the fluid medium in the inner cavity, the temperature of the sealing cabin at the sealing gap, the leakage image of the sealing gap, the leakage amount and the friction torque of the dynamic seal so as to obtain the sealing performance of the dynamic seal. The testing device is used for testing the sealing performance of the dynamic seal.

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.

The invention discloses a tidal current energy water turbine array flow field sensing and intelligent control system, which relates to the technical field of ocean renewable energy sources and comprises a flow field sensing module, an array state monitoring module, an intelligent control module, a data storage and analysis module and an emergency response module. The flow field sensing module comprises a dynamic calibration sub-module and a short-term prediction sub-module, and equipment such as an acoustic Doppler current meter is adopted; the array state monitoring module comprises a fault grading diagnosis sub-module; the intelligent control module comprises a wake flow avoidance sub-module, a yaw self-adaption sub-module and a power optimization sub-module, and adjustment is achieved through combination of a PLC and a PID. The data storage and analysis module adopts a mode of combining local solid-state storage and cloud, and BP and LSTM models are built in the data storage and analysis module; the emergency response module can dispose six types of scenes in a grading manner. The flow field sensing error is effectively reduced, the array generating capacity standard-reaching rate is improved, the fault response time is shortened, the operation and maintenance cost is reduced, the grid-connected stability is enhanced, and the comprehensive energy efficiency is improved.

The invention discloses a manufacturing method of an offshore comprehensive energy system and equipment, and particularly relates to the technical field of ocean energy development, which comprises the following steps: constructing a medium-low water head pumped storage hydropower station connected with a power grid in the ocean; a tidal energy reservoir is built in the ocean, and a tidal energy connecting dam is built between the tidal energy reservoir and the pumped storage hydropower station; a solar water pumping device, a wind power water pumping device and a wave energy water pumping device are respectively arranged at preset positions of the tidal energy reservoir, the pumped storage reservoir dam of the pumped storage hydropower station and the tidal current energy connecting dam; multi-energy complementation and unified energy storage are achieved, tidal energy, tidal current energy, solar energy, wave energy and wind energy are integrated into the pumped storage reservoir through respective water pumping devices, intermittent and fluctuating ocean energy is uniformly converted into stable gravitational potential energy to be stored, and then concentrated power generation is conducted through the medium-low water head pumped storage power station. The problem of unstable power supply is solved, and the energy storage cost is reduced.

The invention discloses an output power prediction method, device and equipment of a tidal current energy power generation device, and relates to the field of tidal current energy power generation, and the method comprises the steps: building a matching data set between first tidal current observation data of a test sea area and average output power data of the tidal current energy power generation device; performing data quality control processing on the matched data set to remove abnormal data in the matched data set to obtain a target data set; based on the target data set, constructing a target odd data set and a target even data set by using an odd-even extraction method of data serial numbers; based on the target odd data set, constructing an initial output power learning model of the tidal current energy power generation device; and based on the target even data set, correcting the initial output power learning model to obtain a target output power learning model, and performing output power prediction of the tidal current energy power generation device based on the target output power learning model.

The invention relates to the technical field of cavitation monitoring, in particular to a tidal current energy water turbine cavitation predicting and monitoring method which comprises the steps that S1, multi-sensor data of a tidal current energy water turbine are collected, and the multi-sensor data comprise vibration signals, ultrasonic signals and pressure signals; s2, performing frequency domain analysis on the vibration signal, and extracting an energy value of a high frequency band as a vibration characteristic value; s3, performing transmission attenuation analysis on the ultrasonic signal, and calculating an ultrasonic attenuation rate as an ultrasonic characteristic value; s4, performing frequency domain analysis on the pressure signal, and extracting a pressure pulsation amplitude at a blade passing frequency as a pressure characteristic value; s5, based on the vibration characteristic value, the ultrasonic characteristic value and the pressure characteristic value, the current cavitation state is determined through a cavitation state judgment rule; and S6, predicting the evolution trend of the cavitation state, and estimating the residual safe operation time of the water turbine under the current working condition. The cavitation recognition result is converted into a quantitative life index, and the method has engineering application value and safety guarantee capability.

The application discloses a self-generating buoy for comprehensively utilizing ocean current energy, and relates to the technical field of ocean monitoring.The self-generating buoy comprises a buoy main body, a solar power generation assembly, a tidal current power generation assembly, a wave power generation assembly and an energy storage component; the buoy main body floats on the water surface; the solar power generation assembly is arranged on the upper side of the buoy main body; the wave power generation assembly is arranged on the lower side of the buoy main body; the tidal current power generation assembly can rotate around a vertical axis relative to the buoy main body and can move along the vertical direction relative to the buoy main body; the wave power generation assembly can be driven by the tidal current power generation assembly in the vertical direction, so that the floating assembly can move along the vertical direction to drive the first power generation component to move and generate power; and the energy storage component can store electric energy.The self-generating buoy for comprehensively utilizing ocean current energy can comprehensively utilize solar energy, tidal current energy and wave energy, improve the self-generating efficiency, and adapt to the changes of the tidal current in multiple directions.

The invention discloses a tidal current energy water turbine power prediction and rotation speed adjustment method, and relates to the technical field of offshore tidal current energy power generation, and the method comprises the following steps: a tidal current data collection step: obtaining parameters such as tidal current speed and flow direction, and storing historical data; a power prediction step: constructing a model based on the improved LSTM neural network, and outputting a power prediction value in the future 5-30 min; a rotating speed adjustment decision step: receiving a predicted value and a real-time parameter, and formulating an adjustment instruction; executing a driving step, executing an instruction, and realizing rotating speed control through a hydraulic actuator and the like to form a closed loop; and a monitoring and early warning step: monitoring the state of each step, giving an alarm and generating a report when the state is abnormal. The method improves the power prediction precision and the rotating speed adjustment response speed, reduces the equipment loss, enhances the collaboration with the power grid, guarantees the stable operation of the system, and improves the tidal current energy utilization efficiency.

An ocean wave and tidal current energy conversion system includes a first vessel and a second vessel, the first vessel being parallel and spaced apart from the second vessel. The first and second vessels include supports that receive cylinders that rotate from ocean waves and currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen that fills each vessel with hydrogen gas.

The invention discloses a ribbon anti-drag bidirectional blade of a horizontal shaft tidal current energy water turbine, and relates to the technical field of tidal current energy utilization, the ribbon anti-drag bidirectional blade comprises a device main body, the device main body comprises a control assembly and a locking assembly connected with the control assembly, the control assembly comprises a top cover and a second connecting rod, and the top cover is provided with a plurality of first connecting rods; the device has the advantages that a motor in the linkage assembly drives a sliding block on a lead screw to move, then the third connecting rod and the fourth connecting rod are stably driven to conduct transmission, the bearing frame is pushed to drive and control fine adjustment of the surrounding main shaft, and the fine adjustment of the surrounding main shaft is achieved; the control ring is matched to drive the top cover to synchronously act through the bottom ring, the second connecting rod and the first connecting rod, finally the blades on the rotating wheel are driven to rotate around the axes of the blades, and self-adaptive adjustment of attack angles of the multiple blades is achieved.

The present invention discloses an energy self - replenishing device for an underwater unmanned vehicle. This invention is realized by installing a tidal current turbine inside the tail compartment of the vehicle. Specifically, a diversion pipeline is set at the tail of the compartment, and a sea current energy generation device is installed inside the diversion pipeline to charge the unmanned underwater vehicle. The sea current enters the internal cavity of the rudder through the opening at the leading edge of the 45° rudder at the tail of the vehicle and then enters the diversion pipeline inside the tail compartment, thereby driving the blades of the sea current energy generation device installed in the diversion pipeline to rotate, driving the generator to generate electric energy and storing it in the storage battery, and then replenishing energy for the underwater unmanned vehicle. The present invention can effectively convert sea current energy into electric energy for use by the underwater unmanned vehicle and has a relatively small impact on the navigation of the vehicle, fundamentally solving the problem of energy replenishment for the underwater unmanned vehicle.

The utility model relates to a telescopic tidal current energy water turbine blade, which belongs to the technical field of water turbine blades and comprises a tidal current energy water turbine runner hub, a secondary mother blade, a primary mother blade, a son blade, a waterproof motor and a ball screw. And the second-stage mother blade is provided with a storage groove corresponding to the first-stage mother blade. According to the utility model, the plurality of waterproof motors can be synchronously started through the same stepping controller, so that the plurality of primary mother blades can extend out of the secondary mother blades, the lengths of the plurality of blades can be adjusted, and the primary mother blades and the son blades can extend to the optimal length in a tidal current with a relatively high flow speed so as to capture more energy; and in the tidal current with the low flow speed, the primary mother blade and the secondary blade can contract, the resistance is reduced, the efficiency is improved, the secondary blade can rotate within a certain angle range, the attack angle of the blade can be adjusted according to the tidal current, and therefore the energy capture efficiency is improved.

The application discloses a blade and a horizontal shaft tidal current power generator, wherein the blade comprises a main blade, a supporting piece, a spoiler and a damping piece; the supporting piece is provided with a first mounting end and a connecting shaft connected with the first mounting end; the first mounting end is connected with the main blade; the spoiler is sleeved on the outer periphery of the connecting shaft; one end of the damping piece is adapted to be connected with the main blade; the other end of the damping piece is adapted to be connected with the spoiler; when the load borne by the spoiler changes, the spoiler rotates around the connecting shaft to change the included angle between the spoiler and the main blade; the damping piece generates a corresponding damping force, which is used for limiting the spoiler; the spoiler can realize passive variable pitch according to different loads, and does not need to use flow measuring equipment and active variable pitch equipment, thereby avoiding the influence of errors and faults of the flow measuring equipment and the active variable pitch equipment; and since the spoiler adopts mechanical passive variable pitch, various electronic instruments are not needed to participate in variable pitch, and the influence of the marine environment on the blade is reduced.

This invention relates to a construction method for a tidal power station structure, comprising the following steps: S1, installing and positioning the jacket structure using a floating crane; S2, floating the steel casing into the positioning hoist, drilling holes through the steel casing to the design elevation, and pouring pile foundations to form a steel-concrete composite pile structure; S3, prefabricating the foundation on land, pre-installing steel sleeves at the bottom of the foundation, and setting up a double-arm steel cofferdam around the upper perimeter of the foundation; S4, floating the prefabricated components to the design position, and connecting the steel sleeves with the top of the steel casing; S5, inflating airbags to form a sealed water-blocking system, and pumping out water from the double-arm steel cofferdam to create a dry working area; S6, cutting the portion of the top of the steel casing exceeding the pile foundation within the dry working area, and pouring the hollow structure of the foundation; S7, dismantling the double-arm steel cofferdam and jacket structure, and constructing the work platform; S8, hoisting the turbine assembly platform and the work platform as a whole. This invention optimizes the construction process of a tidal power station and improves the stability and durability of the structure.

The application discloses a fish tail type tidal current energy power generation device, which solves the problem that the existing tidal current energy power generation device cannot be effectively applied to the near-shore shallow sea area, has the advantages of large sweeping area and high power generation efficiency, and has the technical scheme that the device comprises a first swing energy absorbing mechanism and a second swing energy absorbing mechanism; the first swing energy absorbing mechanism comprises a first cross arm, the end of the first cross arm is hinged to a first hydrofoil, and the first cross arm is connected with a first hydraulic pump and a first air pump; the second swing energy absorbing mechanism comprises a second cross arm, the end of the second cross arm is hinged to a second hydrofoil, and the second cross arm is connected with a second hydraulic pump and a second air pump; the first hydraulic pump is connected with a second hydraulic motor, the second hydraulic motor is connected with the second hydrofoil, and the second hydraulic motor drives the second hydrofoil to swing along the hinged position of the second cross arm; the second hydraulic pump is connected with a first hydraulic motor, the first hydraulic motor is connected with the first hydrofoil, and the first hydraulic motor drives the first hydrofoil to swing along the hinged position of the first cross arm.

The application discloses a wave energy and tidal current energy combined power generation device on a buoy, relates to the technical field of ocean energy utilization, and comprises a buoy main body, a connecting module, a plurality of wave energy power generation modules and a plurality of tidal current energy power generation modules. The buoy main body is installed on the center upper end of the connecting module. Each wave energy power generation module is connected with the connecting module, and the plurality of wave energy power generation modules are uniformly arranged around the outer periphery of the connecting module. The wave energy power generation module can generate power by acting with the wave lifting and falling. Each tidal current energy power generation module is installed on the lower end of the connecting module, and the plurality of tidal current energy power generation modules are uniformly arranged around the center of the connecting module. The tidal current energy power generation module can generate power by acting with the flow of the tidal current. The application can improve the power generation capacity and power generation efficiency.

The invention relates to the technical field of offshore buoys, in particular to an offshore detection buoy utilizing tidal current energy to generate electricity, which comprises a floating plate, a waterproof cover is fixedly connected to the top of the floating plate, a conversion box is fixedly connected to the top of the waterproof cover, and a monitoring piece is fixedly connected to the top of the conversion box. The bottom of the floating plate is fixedly connected with an impeller conversion piece, the conduction end of the impeller conversion piece is fixedly connected with the conversion box, a detachable filter screen box is installed at the bottom of the floating plate, and the filter screen box is arranged on the outer side of the impeller conversion piece, so that the impeller conversion piece is covered with the filter screen box; large-block-shaped sundries and floating objects in seawater can be blocked through the filter screen box, then the sundries and the floating objects are prevented from entering the impeller conversion piece, the situation that the impeller conversion piece is blocked, normal operation of tidal current energy conversion is affected is avoided, and meanwhile the situation that the floating objects adhere to blades to reduce the tidal current energy conversion efficiency is prevented; and the tidal current energy conversion efficiency is ensured.

The utility model discloses a modularized comprehensive power generation floating platform which comprises frame rods and connector seats, the frame rods and the connector seats are used for building the platform, and a hexahedral frame with a plurality of grid bodies is formed by connecting the connector seats and the frame rods. The hexahedral frame is provided with an overwater frame body and an underwater frame body, and a buoy is arranged on the underwater frame body or a frame rod of the underwater frame body is composed of the buoy, so that the whole hexahedral frame floats in seawater to form a floating platform; the tidal current energy power generation device or / and the wave energy power generation device is / are installed in the hexahedral frame, the tidal current energy power generation device is located in a grid body of the underwater frame body, and the overhauling device is arranged above the grid body where the tidal current energy power generation device and the wave energy power generation device are located; the vertical wind power generation device is located in a grid body of the overwater frame body, and a plurality of photovoltaic panels are arranged on the top of the overwater frame body. The modular design is adopted, the transportation and the assembly are convenient, wind, light and ocean current power generation are integrated, the investment cost is low, and the return rate is high.

A device for detecting tidal current energy potential of an offshore narrow water channel through an underwater unmanned aerial vehicle comprises the underwater unmanned aerial vehicle capable of being operated in a remote control mode, a flow velocity detector used for measuring the flow velocity of seawater is arranged on the top of the underwater unmanned aerial vehicle, and the flow velocity detector comprises a main support vertically installed on the underwater unmanned aerial vehicle. A plurality of transverse supports which are transversely arranged are sequentially installed on the main support from top to bottom, and a plurality of propeller type flow meters are installed on the transverse supports. The invention further provides a method for detecting the tidal current energy potential of the offshore narrow water channel through the underwater unmanned aerial vehicle, the flow velocity and tidal current energy of offshore multilayer seawater can be efficiently and accurately detected, and the method has important significance in improving the accuracy and efficiency of marine environment detection and developing the tidal current energy.

The invention discloses tidal current energy and buoyancy energy combined power generation equipment and a working method thereof.The tidal current energy and buoyancy energy combined power generation equipment comprises a water turbine, a power generator, a rotating transmission assembly and a control mechanism, the water turbine comprises a rack and a blade mechanism, the blade mechanism comprises a plurality of blade sets and a plurality of sets of driving parts, and the driving parts are arranged on the rack; the control mechanism comprises a controller and a position measuring component, the position measuring component comprises a flood tide position measuring assembly and an ebb tide position measuring assembly, the flood tide position measuring assembly comprises a plurality of forward rotation position measuring pieces and a forward rotation position measuring indicating piece, and the ebb tide position measuring assembly comprises a plurality of reverse rotation position measuring pieces and a reverse rotation position measuring indicating piece. Based on utilization of tidal current energy, buoyancy is utilized to enable the blade sets in the negative energy state to obtain kinetic energy again so as to promote the water turbine to rotate, combined power generation of the tidal current energy and the buoyancy energy is achieved, compared with only utilization of the tidal current energy, consumption of the tidal current energy is reduced, and the power generation efficiency is guaranteed.

The invention discloses a capacity coefficient prediction method, system and equipment for a horizontal-axis tidal current energy power generation device, and relates to the field of field test and analysis of tidal current energy power generation devices, and the method comprises the steps: obtaining a tidal current observation data set of a target sea area and an electric power data set outputted by the horizontal-axis tidal current energy power generation device; interpolating the power flow observation data to enable the power flow observation data to be in one-to-one correspondence with the electric power data, and constructing a matching data set; performing quality control on the matched data set to obtain a target data set; performing equivalent direction and equivalent flow velocity grouping division on the target data set in sequence to obtain a prediction data set; according to the prediction data set, capacity coefficient prediction models of different equivalent directions and different equivalent flow velocity intervals are constructed, and then the current capacity coefficient of the horizontal axis tidal current energy power generation device is predicted. According to the method, the capacity coefficient of the horizontal-axis tidal current energy power generation device under any equivalent flow velocity condition in any equivalent direction can be accurately and scientifically predicted.

The invention relates to the technical field of water turbines, and discloses a double-rotor vertical shaft water turbine set which comprises a first rotor, a second rotor, a transmission device and an output assembly. The first rotor comprises a first blade, a first rotating shaft and a first connecting rod, and the first connecting rod is fixedly connected between the first blade and the first rotating shaft; the second rotor comprises second blades, a second rotating shaft and second connecting rods, and the second connecting rods are fixedly connected between the second blades and the second rotating shaft; the first rotating shaft is parallel to the second rotating shaft, the first rotating shaft and the second rotating shaft are distributed at intervals in the radial direction of the first rotating shaft, and a phase difference exists between the first blade and the second blade; and the transmission device is in transmission connection between the first rotating shaft and the second rotating shaft. Through staggered layout and synchronous rotation of the first rotor and the second rotor, more water turbines can be arranged in the same tidal current energy water channel, the energy conversion efficiency is remarkably improved, meanwhile, the length of a machine body is reduced, the stability is improved, and the service life is prolonged.

The invention discloses a floating vertical shaft wind energy and tidal current energy mixing device applying pumped storage, which comprises a vertical shaft fan, a vertical shaft water turbine and a floating platform, the floating platform is at least provided with two upright posts, the vertical shaft fan is arranged at the top of one upright post, and a pumped storage device is arranged at the bottom of the upright post; a vertical axis water turbine is arranged at the bottom of the other stand column; a water storage tank is arranged at the top of the vertical axis fan, and a water pump connected with a vertical main shaft of the vertical axis water turbine is arranged at the bottom of the water storage tank; the pumped storage device comprises a water pumping pipeline, a water supply pipeline and a water turbine, the water pumping pipeline extends downwards into water, the water turbine is connected with the vertical spindle, and the water supply pipeline is communicated into the water turbine. The self-starting capacity of the vertical axis fan at low wind speed is improved through the pumped storage device, the applicable wind speed range of the vertical axis fan is expanded, wind energy can still be utilized in the low-wind-speed environment, and efficient utilization of wind energy resources is achieved.

The invention discloses a horizontal-axis tidal current energy mounting and docking device suitable for a deep-sea low-flow-speed environment. The horizontal-axis tidal current energy mounting and docking device comprises a fixed base, an AUV docking monitoring system, a locking assembly and a horizontal-axis tidal current energy unit. The fixed base is arranged in a seabed; the locking assembly comprises a connecting seat, a piston and a sealing block; the connecting seat comprises a base and a top seat; the base is arranged on the fixed base; the AUV docking monitoring system is arranged on the horizontal shaft tidal current energy unit and is used for measuring position information of the fixed base and the locking assembly; the bottom of the horizontal shaft tidal current energy unit is a sleeve with a through bottom surface; and the horizontal shaft tidal current energy unit moves the sleeve to be sleeved with the top seat according to the position information. In the scheme, the position information can guide the horizontal shaft tidal current energy unit to move the sleeve to be sleeved with the top seat; the locking assembly is linked with the sealing block through the piston, the hydraulic oil and the sealing block, when the sleeve presses the piston downwards, the sealing block can be pushed through the hydraulic oil to abut against the inner wall of the sleeve in a sealed mode, and fixed connection of the sleeve and the locking assembly is achieved.

The present invention discloses a wave-breaking and current-reducing device suitable for offshore photovoltaic systems in port areas, comprising a frame structure, wherein a wave-breaking and current-reducing power generation device and a current-reducing power generation device are continuously installed along the length direction of the frame structure; the wave-breaking and current-reducing power generation device comprises a spring, a lifting plate, a first power generation system, a first mounting frame, and a slide rail; a limiting sleeve that slides with the slide rail is fixedly provided on the side end of the lifting plate, and a rack is fixedly connected to the limiting sleeve, and the rack can be inserted into the coil of the first power generation system during movement; the current-reducing power generation device comprises a vibrator, a spring limiting layer, and a second power generation system; a rack is fixedly connected to one end of the vibrator corresponding to the second power generation system, and the rack can be inserted into the coil of the second power generation system during movement. The present invention aims to provide a wave-breaking and current-reducing device that can effectively reduce the impact of waves and tidal currents on photovoltaic platforms, and can also utilize wave energy and tidal current energy to generate electricity, thereby achieving dual utilization.

The invention relates to the technical field of wave flow energy power generation, in particular to a wave flow combined power generation platform and a power generation method.Three cylindrical box power generation assemblies are arranged in a cylindrical box, each cylindrical box power generation assembly can generate power through wave energy, and a wave power generation assembly can generate power through wave energy; the ocean current power generation assembly can generate power through ocean current energy, the wave current coupling assembly can output wave energy and ocean current energy in a coupling mode, the lower portion of each floater upper shell is connected with a floater lower shell, and an energy storage synergistic assembly is arranged in each floater lower shell. The power generation method of the wave-flow combined power generation platform comprises the steps that the floater upper shell floats relative to the cylindrical box, and the cylindrical power generation assembly generates power; the wave power generation assembly and the ocean current power generation assembly output power to the coupling assembly to generate power. The device is higher in stability, tidal current energy and wave energy are collected, coupled, superposed and output, and the ocean unit area energy utilization rate is higher.

The present invention also provides a rolling bearing protection device and a vertical axis tidal current energy generation device applicable thereto. The vertical axis tidal current energy generation device includes a frame, a vertical axis hydrogenerator, a rolling bearing, and a rolling bearing protection device. The vertical axis hydrogenerator includes a main shaft disposed perpendicular to the horizontal plane, and one end of the main shaft is rotatably disposed at the bottom of the frame. The rolling bearing is sleeved on one end of the main shaft. The rolling bearing protection device is disposed above the rolling bearing. The rolling bearing protection device includes a first sealing protection device, a first water leakage protection chamber, and a second sealing protection device sequentially arranged along the gravity direction. The first sealing protection device includes at least one first sealing component. The first water leakage protection chamber includes a first water accumulation chamber and a first drainage hole, and the first drainage hole is disposed on the side wall of the first water accumulation chamber. The second sealing protection device includes at least one second sealing component.

The present invention discloses a pile-type tidal energy generator set, comprising a pile, a yaw structure assembly and a cabin, wherein a lift wing and a generator set are arranged on the cabin, and the two sets of generator sets rotate in opposite directions during operation, and thrusters consisting of a motor and a propeller are symmetrically arranged on the front and rear sides of the cabin, and the internal compartment of the cabin is divided into multiple submerged areas and dry areas by crossbeams; the present invention improves the power of a single-pile unit, improves the center of gravity arrangement and force distribution of the unit, and reduces the difficulty of yaw design and maintenance, and reduces the force on the pile by symmetrically arranging two units, two lift wings, and two thrusters, and designing a drag-reducing lift airfoil of the water-facing section in combination with a new yaw structure.

The invention discloses a self-adaptive modular diversion-desilting collaborative operation system and method, and belongs to the field of hydraulic engineering and environmental protection equipment.The self-adaptive modular diversion-desilting collaborative operation system comprises a mobile platform module, a desilting unit module and a power and system control module, and the mobile platform module is of a two-wing ship type structure and comprises a ship body; the desilting unit module comprises a flow guide mechanism, a desilting curtain and a sludge suction pipe, the flow guide mechanism is arranged in front of the top of the ship body, the desilting curtain is arranged on the flow guide mechanism, one end of the sludge suction pipe is connected to the sludge stacking chamber, and the other end of the sludge suction pipe is installed in front of the ship body close to the desilting curtain and used for pumping suspended silt mixtures; the power and system control module is arranged in the ship body and comprises a tidal current energy-diesel hybrid power system and a multi-sensor fusion intelligent control module, and the mobile platform module, the dredging unit module and the tidal current energy-diesel hybrid power system are all electrically connected with the intelligent control module. Efficient silt treatment is achieved through flow guide and desilting collaborative operation.