16 results about "Tidal power" patented technology

The invention relates to an underwater turbine (100), in particular an underwater turbine (100) of a tidal power plant, having at least one rotor shaft (8), wherein: one end of the rotor shaft (8) can be connected, for conjoint rotation, to a rotatable rotor hub (4) which bears rotor blades (6), and the other end of the rotor shaft extends into a stationary housing of the underwater turbine (100), in particular a nacelle (2) of the tidal power plant; the underwater turbine (100) has a positive-engagement rotor rotation lock (20) in an interior of the stationary housing of the underwater turbine; the rotor rotation lock (20) has at least one translatable locking element (28), which can be brought from a free position, in which the rotor rotation lock (20) does not act, into a locking position, in which the locking element (28) prevents rotation of the rotor shaft (8), and at least one receptacle (26), which is designed such that, in the locking position, the at least one receptacle is engaged with the at least one locking element (28) in order to prevent rotation of the rotor shaft (8).

This invention relates to a method for constructing a biodegradable mangrove ecological island based on dynamic tidal energy regulation, and an artificial island siltation device. The artificial island siltation device includes a bamboo gate system, a hemp rope net system, a fixed pile system, and a limiting system. A dynamic filtration structure is formed by the liftable bamboo gate and the hemp rope net. Utilizing the buoyancy difference and water flow velocity changes generated by tidal rise and fall, a synergistic effect is achieved: accelerating the passage of sediment-laden water during high tide and promoting siltation during low tide. A fully biodegradable material is used to construct a growing silt body. The buoyancy balance is regulated by the bamboo joint holes, ensuring the device remains suspended on the surface layer of the silt body. This allows for continuous siltation and elevation of the tidal flat, forming an artificial island that provides a site for mangrove seedling planting and meets the required daily sunrise duration for mangrove growth. The method and device of this invention have technical advantages such as low construction cost, dynamic adaptation to tidal changes, and avoidance of secondary pollution.

This invention relates to a tidal power generation revetment reinforcement structure for artificial islands in coastal areas, aiming to solve the industry pain points of poor off-grid power supply stability, insufficient revetment erosion resistance, and low tidal energy utilization efficiency of existing artificial islands in coastal areas. This solution utilizes a sloping breakwater to set up two-level platforms of varying heights, with corresponding closed corrosion-resistant water storage pipelines and cascade generator sets. The water storage pipelines are anchored to the concrete blocks of the revetment, enabling bidirectional cascade power generation from surface water and tidal energy, while simultaneously strengthening the overall integrity of the revetment. In addition, this solution does not require additional marine resources, and its power supply stability is far superior to traditional island new energy solutions, combining outstanding economic and ecological benefits and being suitable for various coastal development scenarios.

This invention belongs to the field of marine foundation scour protection technology, specifically disclosing a marine foundation scour protection device, including a wind turbine and a multi-stage disturbance component surrounding the marine foundation and arranged from the outside in. Each stage of the disturbance component includes multiple disturbance units; each disturbance unit includes a turbine housing, a turbine, and a deceleration module. The turbine housing is open at the end furthest from the marine foundation, and the deceleration module is located at the end closest to the marine foundation. The turbine is located inside the turbine housing and is used to generate electricity under the influence of the water flow when the water velocity is less than a threshold value. The water flow passing through the turbine enters the deceleration module for deceleration. The wind turbine is connected to the turbine and is used to drive the turbine to rotate in the opposite direction when the water velocity is greater than or equal to the velocity threshold value, using the water flow from the turbine's reverse rotation to counteract the external water flow. This invention not only achieves marine foundation scour protection but also enables the simultaneous development and synergistic utilization of wind and tidal energy.

This invention discloses a system and method for water replenishment and exchange through multi-gate coordinated control, comprising: a river channel; and a first control gate assembly and a second control gate assembly respectively disposed in the upstream and downstream sections of the river channel, and further comprising multiple channels disposed in the river channel and positioned between the first and second control gate assemblies. This invention utilizes natural tidal energy to replenish and exchange water in the inland river channel through multiple gates, while simultaneously and rationally coordinating the opening and closing of the upstream and downstream first and second control gate assemblies, thereby ensuring a long-term unidirectional flow state in the inland river channel, increasing water circulation, and ultimately improving the water quality of the inland river channel.

Disclosed is an underwater turbine (100), in particular an underwater turbine (100) of a tidal power plant, with at least one rotor shaft (8), wherein the rotor shaft (8) is rotatably connected at one end to a rotatable rotor hub (4) supporting rotor blades (6) and extends at its other end into a stationary housing of the underwater turbine (100), in particular a nacelle (2) of the tidal power plant, wherein the underwater turbine (100) has a positive-locking rotor rotation lock (20) inside its stationary housing, wherein the rotor rotation lock (20) has at least one displaceable locking element (28) which can be moved from a free position in which the rotor rotation lock (20) is not effective to a locked position in which the locking element (28) prevents rotation of the rotor shaft (8), and has at least one receptacle (26) designed toin the locking position with at least one locking element (28) engaged to prevent rotation of the rotor shaft (8).

The application provides a kind of renewable energy application mode determination method and system in each application scene, comprising: based on the characteristic information of seawater desalination, obtain the relevant historical data in island area, generate multiple application scenes;Using clustering method to reduce multiple application scenes;Through analytic hierarchy process, obtain the application mode under each application scene after reduction;The characteristic information of seawater desalination includes: load characteristics, installed capacity, regional water use, wind speed, illumination, tidal energy, population, regional GDP and geographical location.The application maximizes the use of wind, light and other natural resources on the island, in combination with the seawater desalination system, can interact with the island power grid control center, as an effective adjustment means involved in the operation control of power grid to realize the optimization, economic and reliable operation of the whole island power grid, and provides a method basis for exploring the operation mode of the region.

Biomimetic Tidal Energy Apparatus Utilizing Manta Ray-Inspired Fin Oscillation

An ocean wave and tidal current energy conversion system includes a frame that has supports that receive cylinders or rotating portions that rotate from ocean or river currents to create hydraulic oil pressure via hydraulic cylinders. The hydraulic oil in the energy conversion system is pumped into a pressure accumulator that removes hydraulic surges and operates an electric generator. The electric generator may power an electrolysis batch system for the production of hydrogen.

In accordance with some embodiments herein, an apparatus is provided. The apparatus includes a buoyant body configured to float on a body of water, a weighted structure, a weighted structure support assembly and a cylinder assembly. The weighted structure support assembly includes a lock mechanism and a release mechanism. The cylinder assembly includes a cylinder housing and a piston in the cylinder housing. The cylinder housing defines one or more fluid inlets and one or more fluid outlets. Movement of the buoyant body, induced by the rising and falling of water levels of the body of water, allows the piston to move within the cylinder housing. Movement of the piston within the cylinder housing allows a first fluid to enter the cylinder housing through the one or more fluid inlets and allows a second fluid to exit the cylinder housing through the one or more fluid outlets.

This invention discloses a tidal power generation vessel and method, belonging to the field of tidal power generation technology. The power generation vessel includes a hull and a hull plate. The hull plate integrates a contraction-expansion (scaling-expansion pipe type) power generation device, which is sequentially arranged along the water flow direction as a contraction section, a throat power generation duct, and an expansion section. The single-sided cone angle of the contraction and expansion sections is 5° to 18°. This device is suitable for nearshore tidal conditions of 0.4 m / s to 0.8 m / s, and can accelerate the incoming current to the optimal working flow velocity of 6 m / s at the throat. It can stably start at 1 m / s and operate efficiently at 2 m / s, achieving bidirectional power generation, cavitation-free operation, and stable operation. The device can be integrated with catamarans, trimarans, or ordinary ships, combining floating support, power generation, and propulsion functions. It requires no dam construction, is low-cost, and eco-friendly. It is suitable for offshore aquaculture, operating platforms, and mobile power supply scenarios, and has high engineering application value.

The application discloses a kind of longitudinal sea turns round hydrogen production device, the device includes external track, main body runner, first power generation mechanism and post-processing device;The main body runner includes inner shaft, impeller device, electrolytic device, air extractor and pressure sensor, the first power generation mechanism includes first generator, the rotor of the first generator is connected with the upper end of the inner shaft of main body runner, power generation is carried out by the rotation of impeller device, the power obtained is stored and distributed by post-processing device, the application generates electricity by seawater driving device, converts potential energy and tidal energy into electrical energy, and hydrogen is produced using the electrical energy, the overall production process is safe, in line with the green and environmentally friendly development concept, and has important significance for the development of hydrogen energy industry.

This invention belongs to the field of tidal power generation technology and relates to a multi-degree-of-freedom adaptive motion compensation device for connecting a floating turbine and a carrier. The device includes a carrier and a turbine, with a retractable hydraulic rod assembly, a turntable, and a slide rail arranged sequentially between them. The retractable hydraulic rod assembly consists of three retractable hydraulic rods arranged in an equilateral triangle. The length of the retractable hydraulic rods is adjustable. One end of each retractable hydraulic rod is connected to the semi-submersible carrier, and the other end is connected to the turntable. The turntable consists of an upper and lower part and can rotate 360 ​​degrees. The slide rail includes a slide path and a slider. The slider is connected to the bottom of the turntable and drives the turntable to slide along the slide rail. This invention improves and optimizes the mechanical connection structure between the turbine and the carrier to eliminate or reduce the swaying motion of the turbine caused by waves, thereby improving the stability and efficiency of the turbine operation, extending the service life of the turbine, and enhancing the applicability of the turbine unit under different sea conditions.

This invention provides a buffer structure for tidal power generation equipment that reduces impact noise while improving operational safety and durability. [Solution] The system comprises a housing 1, a tidal energy collection device 2, a pulley set 3, an impact-absorbing assembly member 6, and a power generation device. The housing has an inlet 111 and an outlet 121. The tidal energy collection device is installed inside the housing and, upon receiving the impact of the tidal current, generates a lever motion that drives the rope 35 of the pulley set to actuate, causing the rope to pull the counterweight 36 to reciprocate and displace. The impact-absorbing assembly member is installed between the third plates 13 of the housing, and its support plate 61 is provided with a through hole 62 for the rope to pass through, and below the support plate, a plurality of impact-absorbing members 63 surrounding the through hole are installed to absorb the impact when the counterweight rises and makes contact, reduce noise and prevent impact, and by providing a buffer stroke at the end of the rise, inertial rebound is reduced, improving operational stability and extending the service life. The power generation device operates to generate electricity upon receiving the transmitted energy.