87 results about "Oscillating Water Column" patented technology

The present invention relates to a wave energy power generation buoy with a variable floating drum diameter and a control method thereof, belonging to the technical field of wave energy power generation buoys, and comprising an air turbine, a rigid floating drum, a flexible floating drum and a heaving plate. The rigid floating drum is a cylinder with a fixed annular cavity, an oscillating water column channel is arranged at the center of the rigid floating drum, a ventilation port communicated with the oscillating water column channel is arranged at the top center of the rigid floating drum, the air turbine is fixedly installed at the ventilation port, a plurality of uniformly distributed vertical rods are fixedly connected to the bottom of the rigid floating drum, and the lower ends of the vertical rods are fixedly connected to the heaving plate. The flexible floating drum is a cylinder with a radially variable annular cavity, the flexible floating drum is fixedly sleeved on the outer peripheral side of the rigid floating drum, and an air inflation and extraction device for inflating or extracting air from the flexible floating drum to change its radial dimension is fixedly installed in the fixed annular cavity. The present invention improves the wave energy conversion efficiency.

The invention discloses an oscillating water column array fan coupling power generation device capable of adapting to tide level changes, belongs to the field of energy utilization equipment, and solves the problems that in the prior art, the wave energy flow density of partial sea areas is low, and the power generation efficiency of an existing OWC wave energy conversion device is low. According to the technical scheme, an inner cavity is formed in the shared gas chamber; a plurality of oscillating water columns are arranged; each oscillating water column is a hollow tubular column body with openings in two ends, and the opening in one end of each oscillating water column is communicated with the inner cavity of the shared air chamber; and the inner cavity of the shared air chamber is communicated with the power input end of the turbine device. The system has the beneficial effects that multi-element energy utilization is realized, and different natural resources are fully utilized. And the volatility of the power system is reduced. When the output of the wind energy or the wave energy is unstable, the other energy may be in a high-output state, so that the power supply of the system is balanced, and the instability of the power system is reduced.

The invention discloses a semi-submersible fan-oscillating water column wave energy device integrated device with heaving plates. The semi-submersible fan-oscillating water column wave energy device integrated device comprises floating fan equipment, a central platform, buoys, hydraulic heaving plate connecting rods, an upper-layer permeable heaving plate, a lower-layer non-permeable heaving plate, a control system, a wind speed monitoring sensor and a laser wave surface displacement sensor. The floating fan equipment is arranged at the upper part of the central platform; the buoy is formed by connecting a permeable protective cover, a hydraulic connecting rod, an OWC device, an air pressure enhancing device, an internal supporting rod, a telescopic supporting plate and a pneumatic turbine. The upper-layer permeable heaving plate and the lower-layer non-permeable heaving plate are connected to the bottom of the buoy through the hydraulic heaving plate connecting rod; the control system is positioned in the lower horizontal plate of the central platform; the wind speed monitoring sensor and the laser wave surface displacement sensor are arranged on a stand column of fan equipment. The fan operation efficiency and the system reliability are improved, the whole life cycle cost is effectively reduced, and good durability and maintainability are achieved.

The invention relates to the technical field of ocean new energy technology utilization, and discloses an oscillating water column type wave energy power generation system with an energy gathering structure at the bottom, which comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, a control host and a bottom energy gathering assembly, the bottom energy-gathering assembly is installed at the lower end of the air chamber and provided with a transmission mechanism, reflection and diversion of seawater at the bottom of the air chamber are achieved through the arranged horizontal bottom plate and the two symmetrically-arranged energy-gathering plates, energy gathering beyond the width of the air chamber is completed, and opening and closing of the energy-gathering plates are synchronously controlled through the transmission mechanism. And the amount of seawater flowing into the air chamber from the water inlet is changed. According to the wave energy power generation system, the oscillation intensity of the water column in the air chamber can be adjusted according to changes of sea surface waves, the speed of the generated air flow can be matched with the optimal working frequency of the turbine power generation system, the power generation efficiency of the device is guaranteed, and the oscillation water column type wave energy power generation device can be protected and prevented from being impacted by sea waves.

The invention relates to a wave power generation buoy with a variable buoy diameter and a control method thereof, and belongs to the technical field of wave power generation buoys, the wave power generation buoy comprises an air turbine, a rigid buoy, a flexible buoy and a heaving plate, the rigid buoy is a barrel with a fixed annular cavity, and an oscillating water column channel is formed in the center of the rigid buoy; the center of the top of the rigid buoy is provided with an air vent communicated with the oscillating water column channel, the air turbine is fixedly installed at the air vent, the bottom of the rigid buoy is fixedly connected with a plurality of evenly-distributed vertical rods, and the lower ends of the vertical rods are fixedly connected with the heaving plate. The flexible buoy is a buoy body with a radial variable annular cavity, the flexible buoy is fixedly arranged on the peripheral side of the rigid buoy in a sleeving mode, and an inflating and exhausting device used for inflating or exhausting air to change the radial size of the flexible buoy is fixedly installed in the fixed annular cavity. The wave energy conversion efficiency is improved.

The invention discloses a novel floating breakwater-oscillating water column wave energy conversion device integrated system which comprises a breakwater assembly, the bottom of the breakwater assembly is fixed through an anchor chain, an air chamber is arranged in the breakwater assembly, the top of the air chamber is provided with an air hole pipeline, the air hole pipeline is connected with a turbine generator, and the turbine generator is connected with an oscillating water column wave energy conversion device. A permeable structure is fixed to the wave facing side of the breakwater assembly, and a gap is formed between the permeable structure and the breakwater assembly. A permeable structure, an oscillating water column wave energy device and a floating breakwater are integrated, the permeable structure is used for dissipating high-frequency short waves, reducing wave loads acting on the structure and improving the stability and survivability of the structure, and in order to improve the energy dissipation effect of the permeable structure, a certain distance is formed between the permeable structure and an air chamber structure; the OWC wave energy device is used for absorbing long-wave energy for power generation, and the blocking capacity of the integrated system to long waves is improved; through integration of the three, a basic platform is shared, sea area resources are saved, operation and maintenance cost is reduced, and diversification of functions of the integrated system is realized.

The invention provides a self-cooling strong-wave-resistance high-energy-capture offshore wind-light-wave combined power generation device, and belongs to the technical field of combined power generation devices, and the self-cooling strong-wave-resistance high-energy-capture offshore wind-light-wave combined power generation device comprises an offshore wind power generation device, a wave energy power generation device and an offshore light energy power generation device; a single-pile foundation of the offshore wind power generation device is buried below a seabed and vertically penetrates through the surface of seawater, and an offshore wind power generation unit and a tower drum are fixed to the single-pile foundation. The wave energy power generation device is an oscillating water column type wave energy power generation device which does heaving motion along a single-pile foundation under the action of waves, a main body is of an annular cylindrical structure, a sliding device is arranged between an inner ring and the single-pile foundation, a connecting column is arranged on the lower portion to be connected with a bottom plate, two arc-shaped airflow pipelines are arranged on the upper portion, and openings of the pipelines horizontally face a photovoltaic panel; the offshore light energy power generation device is provided with an angle adjusting mechanism, and the limitation that a traditional power generation device adopts a single offshore wind energy, wave energy or light energy power generation mode is overcome.

The invention relates to a device and method for exploiting natural gas hydrate through offshore wind-wave-light multi-energy combined power generation and depressurization cooperation, and belongs to the field of ocean natural gas hydrate resource development. The device comprises an underground wind-wave-light multi-energy combined power generation device, an energy storage heating device and a central control device; the underground wind-wave-light multi-energy combined power generation device comprises a photovoltaic panel, a vertical axis fan and an oscillating water column type power generator; the energy storage heating device comprises an electric energy storage device, a voltage converter and an underground heater; the central control device comprises a computer, a wellhead pressure adjusting signal executing mechanism, an electric energy adjusting signal executing mechanism and a wellhead. The computer transmits wellhead pressure and electric energy adjusting information through the real-time signal optical cable, and real-time adjustment of the wellhead pressure and power supply of the underground heater is achieved. Heat absorbed by hydrate decomposition is supplemented to a hydrate stratum in an electric heating mode, the temperature of the hydrate stratum is increased, and guarantee is provided for efficient development of marine natural gas hydrates.

An oscillating water column (OWC) includes a top body and a bottom body. The top body includes a hollow shape, an open top end, an open bottom end, a chamber traversing between the open top and bottom ends, a power take-off system proximate to the open top end, and an air channel proximate to the open top end and the power take-off system. The bottom body includes a bottom heave plate and a plurality of flexible tethers coupling the top body and the bottom body.

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 the technical field of power generation buoys, in particular to a high-reliability ocean wind energy and wave energy combined power generation buoy and method.The high-reliability ocean wind energy and wave energy combined power generation buoy comprises a floating type draught fan platform and an oscillating water column and wave energy conversion device, a power generation draught fan is arranged on the floating type draught fan platform, and the oscillating water column and wave energy conversion device is arranged in the floating type draught fan platform; the oscillating water column wave energy conversion device comprises a buoy, an air turbine, a pressure reducing valve and a generator, the buoy is a hollow cylinder with a top plate, the air turbine and the pressure reducing valve are installed on the top plate of the buoy, and the generator is arranged in the air turbine. The high-reliability ocean wind energy and wave energy combined power generation buoy is high in reliability and high in survivability in severe weather.

The present invention discloses a full-process model of an oscillating water column device based on CFD simulation and an efficiency prediction method thereof, wherein the device comprises a numerical wave water tank and an air chamber arranged at one end of the numerical wave water tank, the side of the air chamber is connected to an air duct, a momentum source term region is arranged in the air duct, and the width of the momentum source term region is consistent with the blade width of the turbine in the device to be evaluated. The full-process model disclosed by the present invention can accurately introduce the damping effect of the air turbine into the air chamber, fully consider the dynamic coupling effect between the air turbine and the air chamber, can truly reflect the working state of the oscillating water column, and make a reasonable prediction of the full-process efficiency.

The invention provides an oscillating water column type wave energy power generation device and method, and relates to the technical field of new energy power generation. The characteristic that the permanent magnet synchronous generator can be converted between a power generation mode and a motor mode is utilized, the Wills turbine, the permanent magnet synchronous generator and the power storage device are combined, and the Wills turbine drives the permanent magnet synchronous generator to generate alternating current electric energy during power generation. The electrical storage device converts alternating-current electric energy generated by the permanent magnet synchronous generator into direct-current electric energy and stores the direct-current electric energy, the electrical storage device can supply power to the permanent magnet synchronous generator before power generation, the permanent magnet synchronous generator can drive the Wills turbine to rotate, and therefore the initial speed is provided for the Wills turbine; therefore, the starting process of the Wills turbine can be accelerated during subsequent power generation, the time consumed by the Wills turbine to reach the rated rotating speed after the Wills turbine is started is shortened, the Wills turbine can operate at the rated rotating speed for a longer time, and the working efficiency of the wave energy power generation device is improved.

The invention relates to the technical field of breakwaters, in particular to a breakwater embedded with an oscillating water column type wave energy power generation device adapting to tidal range variation, which comprises a breakwater body, a plurality of mounting grooves are formed in the head wave surface of the breakwater body and are respectively arranged at intervals in the horizontal direction, and a driving system is arranged in each mounting groove. The driving system is connected with an oscillating water column type wave energy power generation device, and the oscillating water column type wave energy power generation device is driven by the driving system to ascend and descend in the vertical direction. A plurality of oscillating water column type wave energy power generation devices are embedded in the head wave face of the breakwater body at intervals, and the heights and opening orientations of the oscillating water column type wave energy power generation devices are flexibly adjusted through the driving system so as to adapt to and be matched with tidal range changes and incoming wave direction changes of a service sea area; on the basis of maintaining stable mooring conditions in the harbor, energy absorption and capture of waves with different tide levels and incoming wave directions are achieved in an efficient mode, and the capture efficiency is improved to the maximum extent.

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 provides a multi-sea-condition wave energy power generation device based on air pipe switching, and belongs to the technical field of wave energy power generation devices.The multi-sea-condition wave energy power generation device based on air pipe switching comprises a first-stage energy conversion air chamber, a second-stage energy conversion air chamber and a third-stage energy conversion air chamber, the lower conventional secondary energy conversion device comprises a lower airflow pipeline, a Wills turbine, a lower valve and a generator assembly, the lower airflow pipeline is connected with an air hole in the rear wall, the lower valve is opened under the conventional sea condition, and power is generated through the Wills turbine; the upper extreme secondary energy conversion device comprises an upper airflow pipeline, an impact type turbine, an upper valve and a generator assembly, the upper airflow pipeline is connected with an air hole in the rear wall, the upper valve is opened under the extreme sea condition, and power is generated through the impact type turbine. And the energy capture efficiency is low under the normal sea condition.

The invention relates to the field of offshore engineering, and particularly discloses a submerged embankment oscillation water column type anti-wave power generation device which comprises a power generation device body and an L-shaped submerged embankment, the power generation device body comprises an air chamber and an air turbine, the air chamber is a square hollow column, an opening is formed in the bottom end of the air chamber, and an air hole is formed in the top end of the air chamber; the air turbine is arranged in the air hole and converts pneumatic energy flowing through the air hole into electric energy; the air chamber is fixed on the offshore platform, the air hole is formed above the sea surface, the opening is formed below the sea surface, and seawater forms a water column in the air chamber; the L-shaped submerged dike is arranged below the air chamber, the horizontal edge of the L-shaped submerged dike is horizontally placed on the seabed, and the vertical edge of the L-shaped submerged dike is vertical to the seabed and located on the side close to the rear wall of the air chamber. By the adoption of the oscillating water column wave energy power generation device, the wave prevention performance of the device in the full wave period is remarkably enhanced, the coast is effectively protected against erosion, and the energy conversion efficiency of the oscillating water column wave energy power generation device in the long wave period can be improved by means of the characteristic that the submerged breakwater reflects waves.

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 present invention belongs to the technical field of wave energy power generation, and discloses a novel oscillating water column wave energy conversion device that can adapt to wave conditions. The front wall of the device can move forward and backward and rotate, and the front and rear positions of the front wall can be adjusted according to the incident wave conditions, so that the natural frequency of the oscillating water column in the device matches the incident wave, thereby ensuring that the device can have a good wave energy capture efficiency under waves of different frequencies; a hydraulic energy catcher is connected to the top of the front wall, and one end of the hydraulic energy catcher slides on a guide rail to absorb the kinetic energy generated by the rotation of the front wall, further improving the energy capture effect of the wave energy device. Based on the characteristic of being able to change the width of the air chamber of the oscillating water column wave energy device, the present invention improves the wave frequency adaptability of the device, so that it can achieve efficient conversion of wave energy under conditions of incident waves of different frequencies, and the swingable front wall can further improve the energy capture effect of the device.

The invention relates to a quick design method for a floating body system of an oscillating water column type wave energy device, which comprises the following steps of: selecting a proper turbine system type according to wave characteristics of a target sea area, and determining the size, blade shape and rotating speed of the turbine system; performance parameters of the turbine system are obtained through numerical simulation and experimental testing, and the performance parameters of the turbine system are simplified; according to the performance parameters of the simplified turbine system, a correlation model of the turbine system and a floating body system is established, and wave boundary conditions are set; carrying out grid division on a flow field around the floating body system, selecting a proper turbulence model and a solver, and carrying out steady-state or transient-state simulation; and calculating the primary energy conversion efficiency of the floating body system and optimizing the floating body system. According to the method, the design period and the repeated modification frequency are reduced, parameter matching between the turbine system and the floating body system is more reasonable through the whole design method, the energy conversion efficiency of the whole device is improved, and the performance of the whole system is optimized.

The invention provides a pumped storage power station combined oscillating water column type power generation and floater type gravity energy storage composite device which comprises a composite device body composed of an oscillating water column type power generation system and a floater type gravity energy storage system, and the composite device body is installed along the bank of an upper reservoir and the bank of a lower reservoir of a pumped storage power station respectively. According to the oscillating water column type power generation system, airflow is exhausted to an airflow inlet and outlet through an air guide channel and drives a turbine to rotate, and therefore mechanical energy is converted into electric energy; the float-type gravity energy storage system transmits the floating-type gravity block to the generator set through a mooring rope by means of lifting of the floating-type gravity block, so that mechanical energy is converted into electric energy, and meanwhile certain gravitational potential energy can be stored. The system has the advantages of being ingenious in structural design, easy to build and maintain, low in cost, free of complex precision machines, stable in operation, free of extra electric energy loss, capable of storing redundant electric energy, making up for the electric energy difference of the pumped storage power station in a pumping and drainage stage, assisting peak regulation and frequency modulation of the power station, improving the total peak power generation efficiency of the power station, achieving economical efficiency objectively and achieving green power generation.

The invention provides an oscillating water column type compressed air energy storage method based on wave energy conversion, belongs to the field of compressed air energy storage, and is realized by compressing gas by utilizing energy of waves in an oscillating water column cavity. The oscillating water column type compressed air energy storage method is achieved through an oscillating water column cavity, a gas one-way valve, a gas conveying pipeline and a gas storage tank, a wave inlet, an embankment and a gas outlet are formed in the oscillating water column cavity, and the oscillating water column cavity enables gas to be compressed or expanded by forming a water column oscillating up and down; the gas is pumped into a gas storage tank through a gas conveying pipeline through a gas one-way valve, a main body part of the gas conveying pipeline is arranged in the marine environment, and power in the gas compression process comes from kinetic energy of waves of an oscillating water column cavity. Air compression and storage can be achieved in a green and low-energy-consumption mode; the low-energy-consumption seawater cooling effect can be achieved, and an additional cooling device does not need to be installed.

The present application relates to wave energy power generation technical field, provide a kind of oscillating water column wave energy conversion system based on magneto-hydrodynamic power generation, at least includes: float, including sealed end and open end, open end is suitable for extending into water body, to make the region between water surface and sealed end in the interior of float form air chamber, air chamber has with the gas passage of outside communication, air chamber is provided with magnetic field;Oscillating space is arranged in air chamber, and can be deformed;Oscillating space is filled with liquid metal, and oscillating space is suitable for deforming to make liquid metal flow cutting magnetic field to generate current when being impacted by airflow.The conversion system, oscillating space can be deformed to make liquid metal flow cutting magnetic field to generate current when being impacted by airflow upward or downward.Compared with traditional rotary turbine generator, without setting one-way valve rectification system, structure is more simple, more easily maintained, cost is lower, it is conducive to wide range of popularization and use.

An oscillating water column (OWC) includes a top body and a bottom body. The top body includes a hollow shape, an open top end, an open bottom end, a chamber traversing between the open top and bottom ends, a power take-off system proximate to the open top end, and an air channel proximate to the open top end and the power take-off system. The bottom body includes a bottom heave plate and a plurality of flexible tethers coupling the top body and the bottom body.

The invention discloses a light and wave multi-energy complementary power generation device based on a bismuth oxybromide thin film material and an oscillating water column. The light and wave multi-energy complementary power generation device comprises an inflow pipeline, an oscillating water column power generation unit and a photovoltaic power generation unit. The inflow pipeline and the oscillating water column pipeline form an L-shaped fluid channel, periodic compression and expansion of air in the pipeline are triggered by guiding wave kinetic energy, the bismuth oxybromide film is driven to vibrate, and wave energy is converted into electric energy through the piezoelectric effect of the bismuth oxybromide film. Membrane pores excite a synergistic oscillation rate by directing airflow through the membrane. The photovoltaic power generation unit is integrated on the top of the pipeline, incident light energy is directly converted into electric energy, and complementation with wave energy power generation is formed. Efficient collaborative conversion of light energy and wave energy is achieved, the L-shaped pipeline structure optimizes an airflow path to enhance the compression effect, the corrosion resistance of the film guarantees long-term stability in the marine environment, the structure is concise, the cost is reduced, and the system robustness is improved; the technical problems that a traditional ocean energy system is low in efficiency, single in dependence and poor in environmental adaptability are solved.

A wave energy power generation device comprises an oscillating water column power generation mechanism, the oscillating water column power generation mechanism comprises at least one oscillating water column power generation cabin, a bottom water passing opening is formed in the bottom of the oscillating water column power generation cabin, and an air turbine generator is arranged at the top of the oscillating water column power generation cabin; the oscillating floater power generation mechanism comprises at least one oscillating floater power generation cabin arranged on the sea surface in a floating mode, floaters and a plurality of hydraulic cylinders are arranged in the oscillating floater power generation cabins, pistons of the hydraulic cylinders are fixedly connected with moving rods, the moving rods extend out of cylinder bodies and then are rotationally connected with transmission rods, and all the transmission rods are jointly and rotationally connected with a connecting platform. The floater is fixedly connected with the connecting platform, and cylinder bodies of all the hydraulic cylinders are jointly connected with a liquid turbine generator through a liquid distribution assembly. The electric energy conditioning mechanism is used for collecting and transmitting electric energy generated by the air turbine generator and the liquid turbine generator. According to the wave power generation device, wave power can be more efficiently utilized for power generation, the overall structure is more compact, stability is higher, and the application range is wider.

The invention relates to a maximum power control system and method for an oscillating water column type wave energy power generation device. The maximum power control system for the oscillating water column type wave energy power generation device comprises a turbine-permanent magnet generator, a battery charger, a battery pack, an inverter, an adjustable load box and a main controller. The maximum power control method for the oscillating water column type wave energy power generation device comprises the specific steps that a wave energy power generation device power curve is established, a battery charger outputs electric energy to charge a battery pack according to the wave energy power generation device power curve, and a battery pack voltage state machine control algorithm is designed to adjust the resistance value of an adjustable load box. Therefore, the maximum power output of the wave power generation device is ensured.

A floating oscillating water column-type wave energy power generation apparatus includes a first runner chamber and a protective cap, wherein a nozzle is mounted inside the first runner chamber, a flow-guiding cone is coaxially mounted below the nozzle, the flow-guiding cone is conical and arranged with a tip facing down; an impeller is coaxially mounted above the nozzle; a power generator is coaxially mounted above the impeller; the protective cap is mounted at the top of the first runner chamber; and a gap is provided between an edge of the protective cap and an edge of the first runner chamber for air circulation. According to the floating oscillating water column-type wave energy power generation apparatus, as the nozzle with the flow-guiding cone structure is used, the flow-guiding cone can guide air flowing, and increase the air flowing speed in the apparatus.

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.