28 results about "Oscillating Water Column" patented technology

The invention relates to the field of ocean renewable energy technology utilization, and provides an oscillating water column type wave energy power generation device based on a superstructure, which comprises an oscillating water column main body, a superstructure assembly, a top shell and a power generation unit, and is characterized in that the interior of the oscillating water column main body is provided with the superstructure assembly formed by a plurality of guide plates which are arranged along the radial direction and extend in a horn shape; the oscillating water column body is internally divided into a plurality of independent oscillating water column cavities with gradually-changed sizes by combining with the partition plate assembly, an air chamber is defined by the top shell and the oscillating water column body, and airflow energy generated by water column oscillation driving is converted into electric energy through the power generation unit. The power generation unit can adopt a plurality of split type air turbines to generate power or a general type air turbine to generate power. The special fluctuation performance of the superstructure is fully exerted, efficient broadband capture and wave absorption are achieved, meanwhile, wave loads are effectively reduced, diversified integration of wave energy power generation devices is developed, sea area resources and operation and maintenance cost are saved, and negative environmental influences are reduced.

The invention relates to a wave energy utilization device with cluster acquisition and cache push-pull functions. The system is characterized by comprising an oscillating water column type wave energy collector group, a positive pressure pipeline which is communicated with the oscillating water column type wave energy collector group and is provided with a one-way valve, a negative pressure pipeline which is communicated with the oscillating water column type wave energy collector group and is provided with a one-way valve, and a positive pressure buffer tank which is communicated with the positive pressure pipeline, the negative pressure buffer tank is communicated with the negative pressure pipeline, and a turbine generator set which is driven by the pressure difference in the buffer tank to generate power is arranged between the positive pressure buffer tank and the negative pressure buffer tank. The wave energy utilization device with the cluster acquisition and cache push-pull functions is simple in structure and reasonable in design, and large-scale utilization of wave energy is facilitated.

The invention relates to the technical field of water conservancy projects, and discloses an estuary channel erosion and deposition control method and system based on water column wave energy collection and release. According to the method, wave energy is captured through an oscillating water column air chamber with a bottom opening, bidirectional airflow is converted into unidirectional high-pressure airflow through an airflow rectifying unit, and the unidirectional high-pressure airflow is stored in a high-pressure energy storage container; the system monitors the flow velocity of a channel and the air pressure of the energy storage container in real time, only when the flow velocity meets a preset ebb tide transportation condition and the air pressure is higher than a critical threshold value, a trigger instruction is generated, after the instruction is responded, high-pressure gas is injected into the gas-liquid replacement excitation cavity sinking to the bottom, and water in the driving cavity forms high-speed hydraulic jet flow through a Laval nozzle to impact bottom mud. After jet flow is finished, the cavity exhausts air and relieves pressure, the external water body reversely flows back through the hydrostatic pressure of the environment, and suspended sediment is entrained and sucked. Through the cyclic operation, energy self-sufficiency, intelligent opportunity selection operation and efficient dredging are achieved, the operation cost and the environmental influence are reduced, and the method is suitable for remote and unattended navigation channel maintenance.

The application discloses a floating oscillating water column type wave power generation device, which comprises a runner chamber I and a protective cap, a nozzle is arranged in the runner chamber I, a flow guide cone is arranged below the nozzle and has the same central axis with the nozzle, the flow guide cone is conical and has a downward pointed end, an impeller is arranged above the nozzle and has the same central axis with the nozzle, a generator is arranged above the impeller and has the same central axis with the impeller, the protective cap is arranged on the top of the runner chamber I, and gaps for air circulation are arranged at the edges of the runner chamber I and the protective cap. The nozzle with the flow guide cone structure is adopted in the application, the flow guide cone can guide the flowing direction of air flow, accelerate the flowing speed of the air flow in the device, and slow down the wave upwelling phenomenon in the runner chamber, thereby protecting the internal components of the device. The protective cap can effectively protect the generator and the controller in the device from the erosion of rainwater and sea air, thereby prolonging the service life of the device.

The invention relates to the technical field of ocean engineering, and particularly discloses an oscillating water column type wave energy breakwater integrated system based on a superstructure. The system comprises a breakwater carrier which is internally provided with a superstructure formed by a plurality of arc-shaped flow guide plates which are coaxially arranged. The superstructure divides the internal cavity of the carrier into a plurality of independent sector-ring-shaped cavities with different radial sizes. The top of each sector-ring-shaped cavity is provided with a cavity top plate and a vent hole, and the vent holes are connected with a turbine generator through pipelines. The breakwater carrier may be designed as a floating structure anchored by a mooring system or as a bottom-seated structure that is directly bottom-seated. Through the superstructure design, a plurality of oscillating water columns with different inherent frequencies can be excited in the system, so that efficient capture and conversion of broadband wave energy are realized. Meanwhile, the wave absorbing performance is effectively improved, and the wave load is remarkably reduced.

The present application relates to a kind of integrated oscillating water column type wave energy conversion device's catamaran combination type floating breakwater, single section floating breakwater includes floating body structure and oscillating water column type wave power generation system;Floating body structure includes catamaran pontoon structure, catamaran float structure and underwater wave board;The upper portion of float is equipped with ballast tank, battery compartment and airflow duct, and the lower portion is equipped as first air chamber;Underwater wave board is installed in the lower end of float, forms second air chamber, and second air chamber is communicated with first air chamber and is jointly constituted air chamber structure;Air chamber structure is provided with water inlet in the direction perpendicular to wave incidence;Generator set is arranged in airflow duct, and airflow duct is communicated with external gas and air chamber structure.The catamaran of the present application not only can effectively enhance the weakening effect of floating breakwater to long-period wave, but also can be used twice to transmission wave and diffraction wave;The combination of underwater wave board and float improves the space of air chamber, and enhances the power generation efficiency of wave energy power generation device.

The invention relates to the technical field of ocean renewable energy utilization, and discloses a combined type wave power generation device based on built-in oscillating body motion control, which comprises an annular floating carrier platform, an air turbine generator set and a plurality of built-in oscillating body power generation systems, and is characterized in that the annular floating carrier platform consists of an inner shell and an outer shell; the upper ends of the inner shell and the outer shell are jointly and fixedly connected with a deck, the lower ends of the inner shell and the outer shell are jointly and fixedly connected with an annular base, the bottom of the inner shell is opened towards seawater to form an oscillating water column, the free liquid level of the water column, the inner shell and the deck form an air chamber, and the air turbine generator set is installed in the center of the deck. The device is used for converting air kinetic energy generated by motion of the oscillating water column in the air chamber into electric energy. According to the technical scheme, the motion of the floating carrier can be effectively restrained through the built-in oscillator power generation system, meanwhile, the relative motion amplitude of the oscillating water column and the floating carrier can be increased, and then the wave energy capturing efficiency is improved.

The invention relates to the technical field of wave energy power generation ships, in particular to a controllable oscillating water column type wave energy power generation ship and a method thereof.The controllable oscillating water column type wave energy power generation ship comprises a rear bent pipe ship body, an air turbine, a speed reducer, an opening and closing mechanism, a starting motor and a generator, the rear bent pipe ship body is provided with a hollow channel, and an air inlet of the air turbine communicates with an air outlet of the hollow channel; the opening and closing mechanism comprises an airflow baffle and an opening and closing driving motor, the opening and closing driving motor drives the airflow baffle to shield or open an air outlet of the air turbine, an output shaft of the air turbine is in transmission connection with an input shaft of the generator through a speed reducer, and an output shaft electromagnetic clutch is arranged on the output shaft of the air turbine. The output end of the starting motor is in transmission connection with an output shaft of the air turbine through an output shaft electromagnetic clutch. The controllable oscillating water column type wave energy power generation ship and method are good in control effect, high in reliability, not prone to damage under extreme sea conditions and high in survivability.

This invention relates to the field of offshore power generation technology, specifically to an integrated device for an offshore wind turbine and a dual-chamber oscillating water column wave energy device. The device includes a jacket and a dual-chamber oscillating water column wave energy assembly, which is driven by a lifting mechanism to achieve vertical movement. The assembly comprises an inner chamber and an outer chamber, with the inner chamber capable of vertical movement relative to the outer chamber. Both the inner and outer chambers are equipped with turbine power generation mechanisms. A flow regulation component is used to adjust the opening of the first and second air orifices. This invention can adjust the inner and outer chambers to a suitable draft depth via the lifting mechanism; it can also achieve single / dual chamber switching and adjust the orifice opening ratio to improve power generation efficiency via the flow regulation component; multiple measures can be combined to improve the power generation efficiency of the wave energy device. In extreme sea conditions, the dual-chamber oscillating water column wave energy assembly moves upwards, away from the sea surface to a safe position, thereby reducing the impact of waves on the device.

This invention relates to the field of marine new energy technology utilization, and discloses an oscillating water column wave energy generation system with a bottom-mounted energy-concentrating structure. The system includes a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, and a control unit. It also includes a bottom energy-concentrating component installed at the lower end of the air chamber and equipped with a transmission mechanism. A horizontal bottom plate and two symmetrically arranged energy-concentrating plates reflect and guide seawater at the bottom of the air chamber, concentrating energy beyond the width of the air chamber. The transmission mechanism synchronously controls the opening and closing of the energy-concentrating plates, changing the amount of seawater entering the air chamber at the inlet. This wave energy generation system can adjust the oscillation intensity of the water column in the air chamber according to changes in sea waves, ensuring that the generated airflow velocity matches the optimal operating frequency of the turbine power generation system, guaranteeing the power generation efficiency of the device. It also protects the oscillating water column wave energy generation device from wave impacts.

The invention belongs to the field of energy utilization equipment, and relates to a magnetic coupling nautilus type variable cross-section oscillating water column type wave energy power generation device which comprises a nautilus type variable cross-section air chamber, an electromagnetic vibration power generation system and an adjustable ballast tank. The top is connected with the turbine system; the movable section of the outer wall of the air chamber is composed of a hollow cylindrical pipe, a semicircular section plate, a movable connecting rod and a spring piston system, and the semicircular section plate is hinged to the inner wall of the hollow cylindrical pipe; the electromagnetic vibration power generation system is coupled to a movable section of the outer wall of the air chamber, a power generation coil is wound on a hollow cylindrical pipe, and a permanent magnet is arranged on a movable connecting rod; and a water suction pump is mounted at the lower part of the adjustable ballast tank. According to the device, the resonant frequency accurately matched with the sea wave period can be generated according to the change of sea waves, the device can better adapt to the wave change, optimal wave energy capture is achieved, and therefore the OWC technology which is high in energy conversion rate and accurately matched with the sea wave period is achieved.

The invention discloses a double-body structure wave energy observation buoy and method suitable for a wide-area networking marine ranch cluster. The double-body structure wave energy observation buoy comprises an upper floating body, a lower floating body and a connecting mechanism between the upper floating body and the lower floating body. An ocean energy power generation device, ocean observation equipment and an energy management system are integrated in the upper floating body; the ocean power generation device comprises a wave power generation system, a solar power generation system and the like; the wave power generation system can comprise an oscillating float type device, an oscillating water column type device and the like. The method comprises the following steps: calculating hydrodynamic coefficients of the upper floating body and the lower floating body according to specific sea condition environmental parameters, combining a kinetic equation and adopting an optimization algorithm, taking the maximum value of the calculated average energy obtaining power of the upper floating body as an evaluation index, and calculating the energy obtaining power of the lower floating body according to the evaluation index. And selecting the lower floating body / connecting rope parameter as an optimal value when the average energy obtaining power of the upper floating body is globally maximum. According to the embodiment, the double-body type wave energy buoy with the high power generation effect under the given sea condition can be obtained, and the equipment carrying capacity of the ocean buoy is effectively improved.

An oscillating water column type wave energy power generation device with energy storage and valve control, the power generation device comprising: an air chamber, the lower end of the air chamber is completely open, and the upper end of the air chamber is provided with an opening; the air chamber is placed on the sea surface as a whole, when waves enter the air chamber, the water surface in the air chamber oscillates up and down, and the air in the air chamber reciprocates; a plurality of pneumatic check valves are arranged at the upper end of the air chamber, and are used for controlling the one-way flow of air flow in the air chamber; an energy accumulator comprising a positive pressure accumulator and a negative pressure accumulator is used for storing pneumatic energy; a pneumatic proportional valve is controlled by a controller to adjust the size of the opening of the air chamber; an air turbine is a one-way impact type air turbine, and when the one-way air flow passes through the turbine, the turbine rotates in one direction; and a generator is connected to the air turbine through a shaft coupling, so that the generator generates electricity when the air turbine rotates.

This invention provides a large-scale floating platform wave energy power generation device integrated with aquaculture cages, relating to the field of wave energy power generation technology. It includes a floating mounting section, on which an oscillating water column section is installed. The oscillating water column section is used to generate electricity via wave energy. A floating isolation component is installed inside the oscillating water column section. The floating isolation component is used to clean the oscillating water column section. An exhaust section is installed on the oscillating water column section, and the exhaust section is connected to the floating isolation component. An overpressure buffer component is installed on the oscillating water column section. The floating isolation component can isolate the liquid surface within the oscillating water column shell, preventing splashing of seawater during rises and falls or overflow due to strong waves. The floating box can also be used to isolate the seawater below. This solves the problem that current wave energy power generation devices cannot easily achieve automatic seawater isolation and self-cleaning maintenance without affecting normal wave energy power generation.

The application discloses a marine power generation device, relates to the technical field of marine energy utilization, and comprises a floating platform, a water turbine, a first generator, a plurality of air turbines and a plurality of second generators. The floating platform is provided with a water storage pool, a wave leading surface and a plurality of pneumatic chambers. The wave leading surface is used for guiding seawater to climb into the water storage pool. The water storage pool is provided with a water outlet, and the water outlet can drive the water turbine to rotate and in turn drive the first generator to generate power, thereby forming an overtopping wave energy power generation device. The pneumatic chambers can generate reciprocating airflow under the action of waves. The air turbines can rotate in the same direction under the drive of the reciprocating airflow in the pneumatic chambers and in turn drive the second generators to generate power, thereby forming an oscillating water column wave energy power generation device. The marine power generation device is designed by integrating the overtopping wave energy power generation device and the oscillating water column wave energy power generation device, and effectively solves the problems of the single device in the prior art which cannot cover wide-spectrum wave energy and the space utilization conflict caused by the integration of multiple devices.

The invention relates to the technical field of wave energy power generation ships, in particular to a stable-operation high-reliability oscillating water column type wave energy power generation ship and a control method. The stable-operation high-reliability oscillating water column type wave energy power generation ship comprises a rear bent pipe ship body, an air turbine, a speed reducer, an opening and closing mechanism, a starting motor and a power generator; the opening and closing mechanism comprises a shielding plate and an opening and closing driving motor, the opening and closing driving motor drives the shielding plate to be close to or away from an air outlet of the air turbine, an output shaft of the air turbine is in transmission connection with an input shaft of the generator through a speed reducer, and an output shaft electromagnetic clutch is arranged on the output shaft of the air turbine. The output end of the starting motor is in transmission connection with an output shaft of the air turbine through an output shaft electromagnetic clutch. The high-reliability oscillating water column type wave energy power generation ship stable in operation and the control method are good in control effect, high in reliability, not prone to damage under the extreme sea condition and high in survivability.

The invention discloses a novel self-adaptive wind energy-light energy-wave energy integrated power generation structure system based on starfish bionics. The system comprises a wind power generation module, a solar photovoltaic power generation module, a wave energy power generation module, a starfish bionic floating platform and a mooring system. The floating platform is of a five-axis symmetric structure and comprises a center body and five star-shaped arm platforms. The solar photovoltaic power generation module comprises an overwater fixed photovoltaic array arranged at the top of the star-shaped arm platform and an underwater foldable photovoltaic array embedded into the outer side of the star-shaped arm platform; the wave energy power generation module comprises an oscillating water column type unit and a point absorption type floater unit; the wind power generation modules are symmetrically arranged in the radial direction of the star-shaped arm, and fan blades can be contracted in a self-adaptive mode. The mooring system is arranged in a star shape, and tension and length are dynamically adjusted. Efficient, complementary, integrated and self-adaptive utilization of offshore wind energy, solar energy and wave energy is achieved, the power generation efficiency, the platform stability and the environmental adaptability are remarkably improved, and the cost per kilowatt-hour and the structural risk are reduced.

The invention belongs to the technical field of offshore photovoltaic supporting platforms, and particularly provides a self-driving water-cooling pneumatic stable type offshore photovoltaic supporting platform and a control method.According to the platform, a pneumatic group column structure formed by oscillating water column cavities is utilized, wave energy is effectively dissipated through the dynamic coupling effect of compressed air in the cavities and external waves, and the energy efficiency is improved; the motion response of the platform under the complex sea condition is obviously reduced, so that self-adaptive stability is realized; meanwhile, seawater is driven to circularly flow by means of pressure fluctuation of the same air cavity, a self-driven water cooling system without external energy consumption is formed and used for driving seawater taking and circulation and photovoltaic module heat dissipation so as to improve the power generation efficiency of the photovoltaic module, and the platform achieves collaborative optimization in the aspects of structural stability and energy utilization and is suitable for large-scale popularization and application. And excellent wave resistance and energy self-sustaining capability are achieved.

The invention discloses a service time improvement-oriented wave energy efficient in-situ energy supply ocean profile buoy system, which belongs to the field of ocean observation and comprises a main buoy subsystem, a floating drum subsystem and an anchoring subsystem. Wherein the main buoy subsystem is provided with an ocean profile element sensor, a communication system and the like, is used for observing an ocean profile, and is also provided with an oscillating water column wave energy conversion device for capturing long-period waves; the floating drum subsystem is provided with an oscillating water column wave energy conversion device used for capturing short-period waves, the oscillating water column wave energy conversion device is complementary with the wave energy capturing frequency band of the main buoy subsystem, and stable electric energy supply is provided for the buoy system. And the anchoring subsystem is used for anchoring the buoy system at a fixed position to guarantee fixed-point observation. According to the method, the conversion of the anchoring type ocean profile buoy from a battery dependent type to an in-situ energy supply type is promoted, the operation and maintenance cost of an ocean observation network can be remarkably reduced, and high-reliability technical support is provided for real-time monitoring of deep and far sea and early warning of extreme climate.

The present application belongs to the technical field of ocean renewable energy development and utilization, and discloses an integrated device of a floating structure-oscillating water column wave energy conversion device. A vertical column and a lateral support column form a lattice design, reducing wave load and ensuring structural stability. Energy concentrating plates are arranged on the side of the vertical column. The control system controls the movement of the energy concentrating plates to form reflected energy concentration after monitoring by the monitoring system, improving wave energy conversion efficiency. At the same time, the energy concentrating plates are lifted under extreme sea conditions to reduce wave load. A flow regulating system is arranged inside the air chamber of the oscillating water column wave energy conversion device to regulate the flow of air in the air chamber into the turbine generator, so that the power generation efficiency of the turbine generator reaches the maximum value, improving the conversion efficiency of the device. The present application has stable structure, high energy conversion efficiency, strong adaptability and high survival ability under extreme sea conditions, and can concentrate waves through the oscillating water column wave energy conversion device.

The invention discloses a double-air-chamber large-cylinder wave power generation device adopting a box-type reinforcing structure, which comprises a double-air-chamber cylinder, a double-air-chamber oscillation mechanism, an oscillation power generation mechanism and a stabilizing mechanism, the double-air-chamber oscillation mechanism comprises a three-way partition wall, a first air chamber bin, a second air chamber bin, a structure reinforcing bin, a reinforcing rib plate and a wave inlet; a three-way partition wall is fixedly arranged in the double-air-chamber cylinder, a first air chamber bin is arranged on one side of the front portion in the double-air-chamber cylinder, a second air chamber bin is arranged on the other side of the front portion in the double-air-chamber cylinder, a structure reinforcing bin is arranged on the rear side in the double-air-chamber cylinder, a reinforcing rib plate is inserted into the structure reinforcing bin, and a wave opening is formed in the lower portion of the front side of the double-air-chamber cylinder. An oscillation power generation mechanism is arranged above the double-air-chamber cylinder, and a stabilizing mechanism is arranged below the double-air-chamber cylinder; through the innovative design of introducing the box type reinforcing structure and the double-air-chamber layout, the core problems that an existing oscillating water column wave energy power generation device is low in structural efficiency, and the self strength excessively depends on the overall thickness are effectively solved.

The invention discloses an oscillating water column type breakwater which comprises an oscillating water column type breakwater body and further comprises an air compression station, an air curtain exhaust pipe, a front side air curtain nozzle and a rear side air curtain nozzle, and the front side air curtain nozzle and the rear side air curtain nozzle are both arranged underwater and distributed on the front side and the rear side of the oscillating water column type breakwater body. One end of the air curtain exhaust pipe is connected with the air compression station, and the other end of the air curtain exhaust pipe is connected with the front side air curtain nozzle and the rear side air curtain nozzle. The breakwater has the advantages that quick-wear parts are small in size and convenient to replace, wave loads can be restrained, the breakwater is protected, meanwhile, wave absorption can be assisted, additional wave loads cannot be generated additionally, and regulation and control are convenient.

The application discloses a kind of based on oscillating water column gradient array deep sea farming platform and its array configuration method, belong to marine aquaculture engineering technical field.The platform includes buoyancy cabin, column, truss, net, oscillating water column device and oscillating float;Multiple oscillating water column devices are arranged outside truss and net, and the inherent frequency gradient array is formed by differentiating the effective volume of air chamber or the immersion depth of water column, and each device air passage is independent and is provided with a turbine power generation unit;Oscillating float is connected to the periphery of column, and the frequency response of oscillating water column array is complementary.Configuration method determines the structure parameters of each device according to the wave frequency distribution of target sea area and arranges gradient along the wave direction.The application widens wave energy capture band, improves array stability and energy utilization efficiency.

The present application relates to the technical fields of ocean engineering and renewable energy, and discloses a back wave water inlet type oscillating water column structure based on long wave reduction and energy extraction, comprising a wave reduction main body, a support, a pile foundation and a turbine generator set with an air turbine, further comprising an arc-shaped movable door, which is provided with two interlayers and is slidingly connected to the wave reduction main body, and a back water inlet opening is formed on one side of the wave reduction main body and matched with the two arc-shaped movable doors. By setting the back water inlet opening on the back wave side of the wave reduction main body, the wave reduction is achieved by the phase difference between the water level modulation caused by the cavity liquid surface fluctuation and the cavity external liquid surface fluctuation. The technical solution can optimize the wave response under different wave periods by synchronously adjusting the size of the water inlet opening, enhance the energy extraction efficiency and reduce the wave transmission rate, and is suitable for various layout forms in offshore and open sea areas, and has good wave adaptation ability and integrated characteristics of wave reduction and energy extraction.

The application relates to the technical field of wave energy power generation, and discloses a modular floating platform integrated system with wave absorbing and wave energy power generation functions. The system is connected by a plurality of semi-submersible floating platform modules through a flexible connector array, each module is surrounded by a back-shaped floating body frame to form a breeding space, and an integrated tandem double-air-chamber oscillating water column wave energy power generation device is arranged on the outer side. The upper and lower two layers of horizontal perforated plates simultaneously serve as the bottom of the rear air chamber and the bottom of the breeding net cage, a buffer water layer is formed in the middle, the perforated plates can increase the oscillating water column damping to improve the power generation efficiency, consume wave energy to realize wave absorption, and complete automatic exchange of breeding water. The system simplifies the structure through structural reuse, reduces the construction and operation costs, realizes the integration of power generation, wave absorption and breeding functions, and is suitable for large-scale popularization and application in deep sea.

This invention belongs to the field of marine renewable energy development and utilization technology, and discloses an integrated device for a fixed monopile wind turbine-oscillating water column wave energy conversion device. The oscillating water column wave energy conversion device adopts a lattice structure and is placed inside the fixed monopile wind turbine foundation. The air chamber contains two symmetrical openings, with an annular moving plate sliding along an inner annular track at each opening. An air hole is located at the top of the air chamber, and a flow regulation system controls the opening degree of the air hole. An annular energy-concentrating plate sliding along a sliding ball bearing track is located outside the oscillating water column wave energy conversion device. The control system rotates the annular energy-concentrating plate to a suitable position for energy concentration; multiple measures are taken to improve the power generation efficiency of the oscillating water column wave energy conversion device. Under extreme sea conditions, the annular moving plate slides along the inner annular track until both symmetrical openings are fully open simultaneously, reducing pressure; the annular energy-concentrating plate moves upward along the rack track to a safe position, away from the sea surface; the lattice structure reduces wave load, thereby reducing the impact of waves on the device.

This invention relates to a prefabricated omnidirectional wave energy capture structure and construction method for a circular caisson independent pier, belonging to the field of port hydraulic structures and marine renewable energy utilization technology. The structure is a fully integrated structure of an oscillating water column wave energy device and a circular caisson, including a modular circular caisson energy capture unit, a sealing and anti-corrosion unit, and a top connection and confluence unit. This invention employs a four-chamber annular symmetrical independent sealing layout to achieve 360° omnidirectional energy capture without blind spots; it uses a prefabricated energy-concentrating guide sill to concentrate wave energy and amplify the water column oscillation amplitude; the epoxy-modified cement-based sealing material of this invention can be directly applied to high-humidity surfaces; through secondary connections of water-stop rubber, prefabricated cover plates, and wet joints, it achieves overall structural stability and long-term sealing of the air chambers; the four independent flanges share a single turbine unit, with each chamber having independent air intake without cross-flow or backflow. This invention is convenient to construct, has reliable sealing, stable structure, and high energy capture efficiency, demonstrating significant engineering and industrialization promotion value.

This invention relates to the field of marine new energy utilization technology and discloses a coupled oscillating float-oscillating water column wave energy conversion device. This device includes an air chamber, a turbine power generation unit, and a built-in oscillating body power generation system. The air chamber consists of a top plate, a bottom plate, a front wall, a rear wall, and side panels, and also includes two partitions fixed within the air chamber. These partitions divide the internal space of the air chamber into two side chambers and a main chamber, with the main chamber centrally located. An inlet connecting the side chambers and the main chamber is located on the front wall. When water enters through the inlet, oscillating water columns are formed in both the main chamber and the side chambers. An air pipe is installed at the upper center of the top plate, generating airflow within the air chamber to drive the turbine power generation unit. This technical solution enables active reconfiguration of the air chamber connectivity, continuous and adjustable airflow distribution, and progressively enhanced safety protection within the same air circuit architecture, while also being compatible with the collaborative operation of multiple power generation technologies.