104 results about "Oscillating Water Column" patented technology

A caisson breakwater provided with vertical duct 2″, room 3″, air-duct 4″, self-rectifying turbine 5″. Under the fluctuations of wave pressure on the outer opening 6, the water, alternately, enters and exits, so that the air in room 3″, alternately, is compressed and expands, and an alternate air flow is produced in the air-duct 4″. The vertical duct 2″ and the room 3′, form a U-conduit, and the air in the room 3″ acts as a spring. The eigenperiod of oscillations in said U-conduit grows as the width of the vertical duct 2″ is reduced and / or the length of said vertical duct is increased, and / or the width and height of the room 3″ is increased. The eigenperiod is fixed close to the wave period of the waves which convey the largest amount of wave energy in a year, so as to absorb a very large quantity of wave energy.

A wave and wind power generation system including a platform and one or more oscillating water columns (OWC's). Included is an airflow control mechanism, a controller and a motion sensor for detecting motion of the platform. Additionally, the controller controls the airflow control mechanism so as to at least partially arrest undesirable motion of the platform.

An axial-flow turbine assembly that includes one or more features for enhancing the efficiency of the turbine's operation. In one embodiment, the turbine assembly includes a turbine rotor having blades that adjust their pitch angle in direct response to working fluid pressure on the blades themselves or other part(s) of the rotor. In other embodiments, the turbine assembly is deployable in an application, such as an oscillating water column system, in which the flow of working fluid varies over time, for example, as pressure driving the flow changes. In a first of these embodiments, the turbine assembly includes a valve that allows the pressure to build so that the flow is optimized for the turbine's operating parameters. In a second of these embodiments, one or more variable-admission nozzle and shutter assemblies are provided to control the flow through the turbine to optimize the flow relative to the turbine's operating parameters.

The invention discloses a floating-type wind energy and wave energy combined power generating system which comprises a wind power generating system and a plurality of oscillating water column type wave energy power generating devices of the same structure. As for the wind power generating system, the upper end of a tower tube is connected with a wind power generating unit, a plurality of buoys ofthe same structure are mounted at the lower end of the tower tube through a truss structure to serve as the oscillating water column type wave energy power generating devices, and each buoy is provided with a wave inlet, an air chamber and an air outlet sequentially from bottom to top; an air turbine power generator is mounted at each air outlet; and waves enter the buoys through the wave inlets to drive the air turbine power generators to generate power. The floating-type wind energy and wave energy combined power generating system is simple in structure, convenient to mount and construct, low in cost and wide in applicable water depth range; wind power generating and wave energy power generating are completed on the same supporting structure and shares a supporting platform and a power transmission mating system, and thus the power generating cost is lowered; and the wave energy power generating device adjusts platform damping, thus the motion stability of the system is improved advantageously, and the floating-type wind energy and wave energy combined power generating system is a reliable offshore renewable energy source power generating platform.

An OWEC designed to convert the energy of an oscillating water column within a wave into electricity for use during peak hours and into compressed air for use during off peak hours, and to withstand adverse weather conditions. Located off-shore, and submerged about 95%, the OWEC comprises: a vertically adjustable spar comprising a vertical shaft connected to a foundation in the sea floor, and extending above sea level; a float comprising parabolic reflectors on the underside to channel wave flow upward, and two buoyancy chambers to support the float's weight; adjustable parabolic spar reflectors attached near the spar's bottom to re-direct horizontal wave flow vertically to maximize the float's produced power; a cylinder system to generate compressed air that is stored in an onsite tank; and, a power takeoff (PTO) device sitting atop the float and comprising two counter-rotating flywheels to convert the float's power into electrical energy.

The invention discloses an oscillating water column type wave power generating device based on the piezoelectric effect. The device comprises an automatic direction-adjustment wave energy collecting mechanism, an air pressure energy storage mechanism, an air-driving piezoelectric generating mechanism and a multi-freedom-degree brush mechanism used for transmitting electric energy of the air-driving piezoelectric generating mechanism; the automatic direction-adjustment wave energy collecting mechanism comprises an oscillating water column type wave power collector, a direction-adjustment empennage and a location portion used for installing and locating the oscillating water column type wave power collector; the air pressure energy storage mechanism comprises a pressure energy storage device, and an oscillating water column air chamber is communicated with the pressure energy storage device through an air inlet pipe; the air-driving piezoelectric generating mechanism comprises piezoelectric patches and a compression driving portion used for compressing the piezoelectric patches. By means of the oscillating water column type wave power generating device, sustainable and durable electric energy can be provided, and the wireless energy supply problem of small and medium size electric appliance in the sea is solved.

The invention discloses an offshore self-propelled type green-energy electric power supply device. The offshore self-propelled type green-energy electric power supply device comprises a ship body with a deck on the upper part, a propelling mechanism and a mooring system, wherein the ship body is equipped with at least one wave energy power-generation unit group; the wave energy power-generation unit group comprises a right side wave energy power-generation unit and a left side wave energy power-generation unit; the right side wave energy power-generation unit comprises a first horn mouth, a first L-shaped bent tube and a first air turbine generator set; and the left side wave energy power-generation unit comprises a second horn mouth, a second L-shaped bent tube and a second air turbine generator set. The offshore self-propelled type green-energy electric power supply device organically integrates a back-bent duct oscillating water column wave energy power generation technology, a wind power generation technology, a photovoltaic power generation technology and a shipbuilding technology, guarantees high efficiency and stability of a power generation station, and greatly reduces the ocean engineering cost and the mooring system cost of the device; safety of the device is greatly improved through mobility of the ship, so that possibility is provided for short-sea, deep-sea, fixed-point, wide-flow and low-cost utilization of offshore green energy. Meanwhile, energy can be supplemented for navigation of chips by rich offshore green energy.

The invention belongs to the technical field of seaborne renewable energy utilization, and discloses a novel floating wind energy-wave energy combined electricity generation system. The system is based on a semi-submersible-oscillating water column wave energy integrated electricity generation platform without supporting stand columns, and comprises a seaborne wind electricity device and an oscillating water column wave energy electricity generation device. By means of the wave energy electricity generation device, vertical reciprocating motion of a water column is converted into reciprocating motion of a gas, and then electricity generation of wave energy is completed through an air turbine generator. According to the system, a bottom floating box and anchor chains of the semi-submersible platform are fully utilized; as the wave energy electricity generation device vertically moves with waves, the electricity generation efficiency is reduced, and the floating box can slow down vertical vibration; the anchor chains can further prevent the wave energy electricity generation device from vertically moving. According to the system, the structure of the supporting stand columns is not used, the construction process is simplified, and the problem of structural fatigue produced by the supporting stand columns is avoided. Compared with a traditional three-stand column semi-submersible blower, the waterplane area of the system is increased, thus steady moment of inertia is large, and the whole stability of a floating basis is improved.

The dual rotor turbine configuration efficiently harnesses oceanic wave energy within an oscillating water column system. The up and down movement of the waves creates a bi-directional pneumatic airflow which spins the twin turbine assemblies.The resulting rotary force is then utilized to drive two electrical generators simultaneously. Each turbine rotor set is composed of a radial array of identical asymmetrical airfoil blades (similar to NASA GA(W)-1). The two rotor sets are assembled as back-to-back mirror images. Both rotor sets are locked to a common axle by means of sprag-type freewheeling clutches. This configuration provides for smooth and continuous unidirectional movement of the axial drive line which drives the two generators.

An offshore platform includes a support structure for supporting a workstation in a body of water at an offshore location. The support structure has a mounting formation and at least one duct is mounted to the mounting formation. The duct is configured to receive an oscillating water column from the body of water wherein oscillations of the oscillating water column generate a fluid flow for driving an energy extraction module.

The present invention relates to a method and apparatus for accumulating energy from an oscillating water column by transducing the water column oscillations to compress a fluid and accumulating the compressed fluid.

The invention discloses an oscillating water column wave energy utilization gas injection artificial upwelling device with a floating breakwater function and a method and belong s to the field of marine engineering. The oscillating water column wave energy utilization gas injection artificial upwelling device with the floating breakwater function is characterized by being composed of a wave energy conversion module, a gas injection module, an anchor chain and a sinker; the wave energy conversion module is suspended on the sea surface, and the lower end of the wave energy conversion module is connected with the sinker by the anchor chain; and the upper part of the gas injection module is connected to the wave energy conversion module, and the lower part of the gas injection module is constrained by a tightening device so as to be attached on a backwave side anchor chain. The method for realizing the oscillating water column wave energy utilization gas injection artificial upwelling device with the floating breakwater function comprises the following steps: device mounting, a process of converting wave energy into air kinetic energy, a process of supplementing air into an air chamber, a process of generating artificial upwelling by gas injection, circulating and repeating. The wave energy is converted and utilized by using a back-bent-tube oscillating water column technology, the artificial upwelling is formed by a gas injection artificial upwelling technology, the device has the advantages of high wave conversion rate, obvious deep-layer seawater lifting effect, durability, good reliability, low engineering investment cost, energy saving, environment friendliness and the like and can be concurrently used as a floating breakwater.

The invention discloses a square box type floating breakwater with an oscillating water column type wave energy power generation device. A wave water inlet is formed in the ahead sea face of the square box type floating breakwater, a generating set is arranged in an airflow channel, waves enter an air chamber from the water inlet of the ahead sea face of the square box type floating breakwater, and a water column which oscillates up and down is formed; the water column oscillates up and down to force air in the air chamber to be compressed and expanded, the air passes through the airflow channel on the top of the air chamber in a reciprocated manner, the generating set is pushed to generate power, through a transmission device, the electric quantity is stored in an energy storage device for standby application, and the breakwater has the advantages of being simple and stable in structure, low in building cost, high in power generation conversion efficiency, convenient to maintain, highin adaptation and the like and can be arranged on the coast, nearshore or offshore sea area, the ocean space is effectively used, the wave energy is converted into electric energy while the wave influence is reduced, and the stable water area environment is provided for the surrounding sea area, and the ocean wave resources are reasonably used.

A bi-directional flow impulse type turbine arrangement (120) for use with a bi-directional reversing flow (F, F1, F2), and in particular for use with an oscillating water column power plant (110). The turbine arrangement (120) has a rotor (120), and first and second sets of guide vanes (140, 142) located on an opposite axial sides of the rotor (132) for directing the bi-directional reversing flow(F, F1, F2) to and from the rotor (132). The guide vanes (140, 142) are disposed at a greater radius (Rv) and radially offset (Ro) from the rotor blades (136). The turbine arrangement further comprises first and second annular ducts (146) disposed respectively between the first and second sets of guide vanes (140, 142) and the rotor (132) for directing fluid from the guide vanes (140, 142) to therotor blades (136). In addition, and in other aspects of the invention, the vanes (144) and rotor blades (136) have a novel profile, with in particular the vanes (144) having a profile to maintain a constant flow passage (Fp) between the vanes (144) over a turning section (164) of the vanes (144), and the rotor blades (136) of the rotor (132) having a higher turning angle (2alpha), and producing a non-axial outlet downstream flow. The turbine (120) may also in another aspect incorporate vanes (144) with a slot (190) and a boundary layer blowing arrangement to re-energise and improve the reverse flow over the vanes (144).

The invention provides a single-pile-based wind energy-wave energy-tidal energy integrated power generation system and belongs to the technical field of ocean renewable energy utilization. Wind energy, wave energy and tidal energy share a supporting structure and a power transmission system. An integration system integrating wind energy, oscillating water column type wave energy and horizontal axis tidal energy is established in ocean through the single-pile type supporting structure to form the integrated power generation system. The integrated power generation system can make full use of offshore renewable resources, so that the purposes of increasing the utilization rate of a single pile foundation and reducing the total power generation cost of the integration system are achieved, theoverall economic efficiency of an offshore wind plant is improved, and the wind energy, wave energy and tidal energy power generation cost is reduced. The novel fixed wind energy-wave energy-tidal energy integrated power generation system increases the effective utilization rate of a sea area, reduces the construction cost and maintenance cost, makes full use of the existing mature draught fan technology, promotes commercial application of wave energy devices and tidal energy devices and is a reliable offshore renewable energy power generation platform.

The invention discloses a breakwater and double-gas-chamber oscillating water column power generation device. The breakwater and double-gas-chamber oscillating water column power generation device iscomposed of a plurality of power generation units. Each power generation unit is composed of a front vertical straight plate, a front gas chamber, a front spring, a front airflow channel, a front airturbine, a rear vertical thin plate, a rear gas chamber, a rear spring, a rear airflow channel, a rear air turbine, a front power generator set, a middle power generator set, a rear power generator set, an automatic adjustable guide rod, a surging middle vertical plate, an anchor chain, an anchor chain fixing pile and the like. The process that wave energy is converted into electric energy is based on the oscillating water column power generation device eave energy conversion principle, the engineering reliability is high, and the practicability is high.

The invention provides a ''mushroom type'' oscillating water column type wave energy conversion device and belongs to the technical field of new energy utilization. The ''mushroom type'' oscillating water column type wave energy conversion device comprises an air chamber, a pile foundation structure and a turbine power generation device. The air chamber is composed of a cylindrical ring body and a hemispherical ring body. The hemispherical ring body is arranged on the cylindrical ring body, and the radius of the hemispherical ring body is the same as that of the cylindrical ring body. A pore pipeline is arranged on the upper portion of the hemispherical ring body. The pore pipeline is connected with the turbine power generation device capable of rotating in the same direction under the two-way airflow function. A crossed support beam is arranged on the upper portion of the pile foundation structure and used for supporting the air chamber. A distance is formed between the crossed support beam and the top of the air chamber so that the airflow can smoothly pass the pore pipeline. According to the ''mushroom type'' oscillating water column type wave energy conversion device, based on the characteristic of 360-degree omnidirectional wave energy absorption, the absorption rate of wave energy is increased; the stability of the device can be guaranteed by the adoption of the fixed type structure, the power generation efficiency is improved, and maintenance is facilitated; and the ''mushroom type'' oscillating water column type wave energy conversion device is combined with the pile foundation structure, and it is possible for the device to be applied to the offshore position from the shore.

The present invention relates to a method and apparatus for accumulating energy from an oscillating water column by transducing the water column oscillations to compress a fluid and accumulating the compressed fluid.

An improved ocean wave energy extraction system is disclosed. The system includes at least one duct for receiving an oscillating water column. The duct has a first segment, a second segment arranged transversely to the first segment and a flow control segment intermediate the first and second segments. The flow control segment is configured to inhibit turbulent flow of the oscillating water column flowing within the duct. A turbine is in fluid communication with the second segment of the duct such that the turbine is driven by the fluid flow which is generated by the oscillations of the oscillating water column within the duct. The turbine rotates an electric generator to thereby generate electrical energy.

An ultrasonic humidifier is comprised of an oscillating transducer which can emit ultrasonic waves to the water above it, an open water container which maintain the water level above the transducer, a central atomizing tube, which separates the central vibrating water column from the water around it, on the water surface to certain distance below, and a guide mechanism for maintaining a corresponding position between the center atomizing tube and the transducer. The central atomizing tube needs to keep its centerline coincide with the centerline of the oscillating water column generated by the transducer. The upper end of the central atomizing tube is flush with the water surface, so that the mist generating performance is kept basically stable regardless changing height of the water level. The central atomizing tube may be fitted with an end face or side structure to cooperate with the guide mechanism or other mechanism to achieve the above functional and performance requirements. An ultrasonic humidifier with a central atomizing tube can have increased mist performance by adding a separation tube, which separates a water column from surrounding water.

The invention provides a comb type breakwater system capable of achieving wave power generation, and belongs to the field of ocean power generation. The comb type breakwater system capable of achieving wave power generation comprises an oscillating water column type power generation device, an oscillating buoy type wave power generation device and an improved comb type breakwater system body, wherein the improved comb type breakwater system body is arranged on a riprap foundation bed laid on the seabed, the oscillating water column type power generation device (short for PU-OWC) is arranged onthe wave coming side of caissons to be used for converting wave energy into electric energy. The oscillating buoy type wave power generation device is arranged in a comb type breakwater wave dissipating chamber and is fixed to a cross beam between the two caissons, and a buoy moves up and down along waves to convert mechanical energy into electric energy. According to the comb type breakwater system capable of achieving wave power generation, the improved comb type breakwater system body is used as the main structure, so that a constant condition is provided for the PU-OWC power generation device and the oscillating buoy type power generation device while a dock basin is maintained stable. Wave energy is converted into electric energy by the PU-OWC power generation device and the oscillating buoy type power generation device, so that the overall wave dissipating effect of the comb type breakwater system is improved, and the structural reliability is improved.

An axial-flow turbine assembly that includes one or more features for enhancing the efficiency of the turbine's operation. In one embodiment, the turbine assembly includes a turbine rotor having blades that adjust their pitch angle in direct response to working fluid pressure on the blades themselves or other part(s) of the rotor. In other embodiments, the turbine assembly is deployable in an application, such as an oscillating water column system, in which the flow of working fluid varies over time, for example, as pressure driving the flow changes. In a first of these embodiments, the turbine assembly includes a valve that allows the pressure to build so that the flow is optimized for the turbine's operating parameters. In a second of these embodiments, one or more variable-admission nozzle and shutter assemblies are provided to control the flow through the turbine to optimize the flow relative to the turbine's operating parameters.

The invention discloses an onshore oscillating water column wave energy converter model testing device and a method, belonging to the hydraulic physical model testing field. In the oscillating water column wave energy converter model testing device, the front part of the device model body is connected with a front wall through a positioning screw. The upper part of the model body is sequentially provided with a wave height instrument, an air pressure sensor and a damping piece, wherein the air pressure sensor and the damping piece are connected through an air flow channel; the two sides of the model body are provided with shielding plates with shielding plate sandwiching layers to make the inner part of the model body form an air chamber structure with a good sealing effect. The lower part of the model body at the area opposite to the wave is provided with a ballast block; and the lower part of the model body at the area facing the wave is provided with an additional model through a clamping groove, and the clamping groove is provided with a water separating cover. The onshore oscillating water column wave energy converter model testing method comprises the following steps of: a testing preparation process, a testing process, an instrument sorting process and a data processing and analyzing process. The device of the invention is novel in design, simple in structure, good in integrity and applicable to wide working conditions. The testing device has the advantages of being high in test precision, convenient to operate in the testing process, high in testing efficiency, flexible in testing design and the like.

Provided herein is an oscillating water column type wave energy converting apparatus that is suspended underwater by a mooring device and system thereof, the apparatus and system comprising an damping plate connected to the mooring device; a post with a hollow of which both ends are open, the post extending vertically upwards from the mooring device; a turbine disposed inside the hollow of the post; and a housing of which its lower end is open and which is disposed at an upper portion of the post, wherein the turbine is rotated by air that flows according to changes in water level inside the hollow of the post.

The invention discloses an oscillating water column self-exciting type wave energy composite power generation device based on the Karman vertex street effect and belongs to the technical field of sustainable power generation. The composite power generation device comprises an upper shrinkage gas channel, an upper cavity body, a lower shrinkage gas channel and a lower cavity body which are sequentially connected from top to bottom. A gas input and output opening is formed in the upper portion of the upper shrinkage gas channel. A sea water input and output opening is formed in the lower portionof the lower cavity body. A sleeve is arranged in the upper cavity body. The sleeve divides the upper cavity body into a left chamber, a middle chamber and a right chamber. An upper streaming cylinder and a lower streaming cylinder are arranged in the sleeve. Multiple dielectric elastomer films sequentially arranged are arranged between the upper streaming cylinder and the lower streaming cylinder. First permanent magnets are arranged on the two sides of the middle position of each dielectric elastomer film correspondingly. Second permanent magnets corresponding to the first permanent magnetsone to one and a piezoelectric cantilever beam used for installing the second permanent magnets are arranged in the left chamber and the right chamber correspondingly. The composite power generationdevice can work in a humid environment for a long time, so that permanent and continuous electric energy is provided.

The invention discloses a vertical type caisson breakwater system with a wave-energy electricity generation function, belonging to the breakwater field. The vertical type caisson breakwater system includes an oscillating water column-typed electricity generation device, a machine room and a vertical type caisson structure. The oscillating water column-typed electricity generation device includes a vertical type upper wave resisting plate, a slope-typed lower wave resisting plate, a multi-arc section transition face, and an energy collecting air chamber. The machine room includes an air turbine device and a generator group. Compared with the prior art, the vertical type caisson breakwater system combines the oscillating water column-typed electricity generation device and the vertical type caisson structure, and thus, shore bases can be effectively prevented from being broken by waves. Wave energy can be used at the same time. The electricity generation efficiency is higher. The vertical type caisson breakwater system with a wave-energy electricity generation function has the advantages of excellent stability of the whole structure, low project cost and easy construction, and is suitable for great depth of water. The vertical type caisson breakwater system with a wave-energy electricity generation function has stronger viability and provides new solution for solving the problem of electricity supply on sea islands.

A device (OWC Oscillating Water Column) for capturing wave energy, the upper part of which contains a pressure accumulator (3) connected to the atmosphere through a unidirectional outlet turbine (4) and a vacuum accumulator (6) connected to the atmosphere through a unidirectional inlet turbine (5). The lower portion is formed by at least one block, where each block is made up of a structural column (19), which when submerged in the water gives rise to a water column (8) and an air chamber (1) in the upper portion. Each block is connected to the pressure accumulator (3) through a non-return intake valve (2), and to the vacuum accumulator (6) through a non-return exhaust valve (7), and having an inlet (16) arranged in the lower portion of each structural column (19).One of the main characteristics of the device is that the pressure (3) and vacuum (6) accumulators act as an air manifold, inhaling and exhaling through the blocks, and at the same time damping sudden changes in pressure.

The invention relates to a power generating device, namely a compressed-gas type sea wave power generating device which takes sea waves as a power source. The invention provides a power generator which can utilize high-energy surges formed by concentrating spreading sea waves on a sea surface to a shoreside during rising tides and falling tides, high waves and wavelets, can utilize an oscillating buoy or an oscillating water column of a primary energy conversion mechanism and can drive a tertiary energy conversion mechanism through a pushing-pulling distance-limiting mechanism, an air compressor, a gas storage tank and an air turbine motor of a secondary energy conversion mechanism, so that high-energy surges are converted into stable and strong constant electric energy. The compressed-gas type sea wave power generating device has the advantages that: firstly, air is generally used as an energy conversion medium, so that air transmission energy loss is the least and the air is the best energy storage medium; secondly, the a water moving part is not arranged in the whole device; thirdly, the structure is simple, the building cost is low and the maintenance is convenient; fourthly, the field construction is simple and easy; fifthly, a plant is built on shore; sixthly, a large sea wave power generation field can be built; seventhly, an effect of protecting the shore is also achieved. The device is a relatively ideal sea wave power generating device among the existing lots of sea wave generating devices.

The invention discloses a multi-stage power supply power buoy with a central pipe. The multi-stage power supply power buoy with the central pipe comprises a solar cell panel, a lamp holder, a main pontoon and the central pipe; the main pontoon floats on the water surface; the lamp holder is mounted on the top surface of the main pontoon; the solar cell panel can be mounted at the top end of the lamp holder or can be attached to the upper surface of the main pontoon; the central pipe comprises a main straight pipe, a flared pipe and a straight tail pipe which are connected with each other in sequence, wherein the flared pipe is thin at the upper part and thick at the lower part; a through hole is formed in the center of the main pontoon; the main pontoon is arranged on the main straight pipe through the through hole in a sleeving manner; a flange with a mounting hole is arranged at the upper end of the main straight pipe; one or more oscillating water column type wave energy power generation devices can be mounted on the flange; the bottoms of the oscillating water column type wave energy power generation devices communicate with the central pipe; and a storage battery is also mounted on the lamp holder. According to the multi-stage power supply power buoy with the central pipe, multi-stage installed power of a single buoy is realized, problems of long time power supply, inconvenient maintenance and the like of the buoys with different power demands are solved, the working continuity of the buoy is guaranteed, the maintenance cost of the buoy is reduced, and the maintenancesafety of the buoy is guaranteed.

The invention belongs to the technical field of marine renewable energy utilization and provides a multi-energy power generation system based on a floating type platform which is specifically an air fan-oscillating water column type wave energy integrated power generation system based on a TLP floating type platform. The air fan-oscillating water column type wave energy integrated power generationsystem based on the TLP floating type platform comprises an offshore wind power generation system and oscillating water column type wave energy power generation devices, and the integrated power generation system which integrates wind energy and an oscillating water column type wave energy system into a whole is established utilizing a TLP platform supporting structure in the ocean. By means of the air fan-oscillating water column type wave energy integrated power generation system based on the TLP floating type platform, marine renewable resources can be fully utilized, and the purposes of increasing the TLP platform utilization rate and reducing the total cost are achieved, so that economic benefits are improved; and by means of the novel floating type multi-energy power generation system, the effective utilization rate of sea areas is increased, the construction cost and the maintenance cost are reduced, and the commercial application of the wave energy devices is facilitated.