494 results about "Tidal current energy" patented technology

The invention provides a movable semi-submersible multifunctional marine energy supplying platform. The movable semi-submersible multifunctional marine energy supplying platform comprises a semi-submersible ship body with the middle portion provided with a main buoyancy cabin, a tidal current energy generating set is installed on the lower section of the main buoyancy cabin, the back portion of a deck of the semi-submersible ship body is provided with hinges which are connected with an energy absorbing floating body arranged above the main buoyancy cabin through supporting arms, the deck of the semi-submersible ship body is provided with a plurality of stand columns each of which is divided into three sections from bottom to top, the lower section of each stand column is provided with a tidal current energy generating set, the middle section of each stand column is provided with a buoyancy adjusting cabin, the upper section of each stand column is provided with an equipment cabin, and each equipment cabin is internally provided with an energy converting device, an energy storing storage battery set and the like. The top portions of all stand columns are connected with an abovewater platform which is provided with a plurality of wind energy generating sets, solar power generation panels and sea water desalting plants, and the output ends of all energy converting devices are connected with the storage battery sets. A wave energy converting element is hinged between the floating body and the semi-submersible ship body deck, and a water blocking plate is installed on the back portion of the semi-submersible ship body. The movable semi-submersible multifunctional marine energy supplying platform is low in cost, convenient to move and high in practicality.

The invention aims at providing an electricity generation ship capable of comprehensively utilizing renewable energy sources. The electricity generation ship comprises a photovoltaic electricity generation cell panel, a wind electricity generation set and a hydro electricity generation set, and independent photovoltaic electricity generation, wind electricity generation and hydro electricity generation can be carried out. The photovoltaic electricity generation cell panel, the wind electricity generation set and the hydro electricity generation set can be connected into a chip power grid at the same time for grid-connected electricity generation. When the hydro electricity generation set participates in electricity generation, a ship body is generally fixed, and a nose faces water flow. When only the photovoltaic electricity generation cell panel and the wind electricity generation set carry out electricity generation, the ship can run. Offshore wind energy, solar energy and tidal current energy are used for electricity generation to guarantee electricity in the initial stage of development of islands, and the ship can run to various islands and offshore platforms badly in need of electric energy to provide electric energy. Therefore, compared with other ships, the electricity generation ship is remarkable in effect of energy saving and emission reduction, and the emission of greenhouse gases is reduced to a large degree.

The invention relates to a wave energy, wind energy and tidal current energy combined power generating device. The wave energy, wind energy and tidal current energy combined power generating device comprises a wind driven power generating device, a wave energy power generating device, a tidal current energy power generating device, floating bodies and a battery pack; the wind driven power generating device, the wave energy power generating device and the battery pack are fixed on the floating bodies, the tidal current energy power generating device is connected with the floating bodies through a supporting rod, and the wind driven power generating device, the wave energy power generating device, the tidal current energy power generating device and the battery pack are respectively electrically connected with an inversion rectifier fixed on the floating body through conducting wires. According to the wave energy, wind energy and tidal current energy combined power generating device, the wave energy, the wind energy and the tidal current energy are captured, rectified and transmitted to the battery pack or directly transmitted to be used by loads such as buoys and seabed superchargers, and the first-order transformation from ocean energy to electric energy and the power generation function of the device can be realized. The wave energy, the wind energy and the tidal current energy combined power generating device has advantages of high ocean energy utilization rate, low cost, independence, continuity and stability in power generation, simplicity and convenience in building and the like and can also be used for supplying power to offshore ocean equipment and islands.

The invention discloses efficient three-wheeled telescopic folding horizontal-shaft tidal current energy generating equipment, belonging to the technical field of tidal current energy generation. The generating equipment is respectively connected with steering knuckles at two sides of a connection body through a telescopic folding cross arm; a generator and a speed-increasing gearbox are respectively fixed at one side of one steering knuckle; a small impeller is connected with the speed-increasing gearbox through a telescopic folding connection rod; the lower side of the steering knuckle is equipped with a rudder which can ensure the tidal current direction is directly opposite to the impeller; the top of the connection body is equipped with the other steering knuckle, and the generator and the speed-increasing gearbox are fixed at one side of the steering knuckle; and a large impeller is connected with the speed-increasing gearbox through the telescopic folding connection rod. The generating equipment is simultaneously provided with three hydro-turbine units for power generation, thus improving generating efficiency of single generating equipment; and main components adopt telescopic folding structures to achieve effective telescoping and folding, thus reducing volume of the whole equipment, facilitating transportation, avoiding disassembly and assembly among the components, reducing submarine installation cost by over 50%, and prolonging service life of a hydro-turbine by over 5 years.

The invention relates to an offshore energy island device, comprising: an offshore platform, wherein a tidal current energy power generation device, a wave energy power generation device, a photovoltaic power generation device, a wind energy power generation device, a hydrogen production device and a seawater desalination device are all arranged on the offshore platform; the tidal current energy power generation device, the wave energy power generation device, the photovoltaic power generation device and the wind energy power generation device are all electrically connected with the hydrogen production device and used for providing electric energy for the hydrogen production device; and the tidal current energy power generation device, the wave energy power generation device, the photovoltaic power generation device and the wind energy power generation device are all electrically connected with the seawater desalination device and used for providing electric energy for the seawater desalination device. Various renewable resources in the sea are fully utilized and provide electric energy for the operation of the seawater desalination device and the hydrogen production device, the stability of the power supply process is ensured and the input-output ratio is improved.

The invention discloses a design method of a combined wing section blade of a horizontal shaft tidal current energy water turbine. The method comprises the steps of researching the hydrodynamic performance of a conventional wing section and the hydrodynamic performance of a bionic wing section separately, combining a conventional blade wing section with the bionic wing section according to the function of all blade elements in the blade, and designing out a combined wing section blade which is superior in performance; obtaining a three-dimensional digital model of a fish fin, selecting section contours of different positions of the fish fin as bionic fish-fin wing sections, selecting a bionic fish-fin wing section through analysis software, exporting the bionic fish-fin wing section and required two-dimensional coordinates of the conventional wing section, optimizing blade elements of the designed blade, obtaining parameters of each blade element, making the bionic wing section and the required conventional wing section correspond to the blade elements, converting the three-dimensional coordinates of the wing section into three-dimensional coordinate data, importing the three-dimensional coordinate data into three-dimensional design software, conducting setting-out treatment, and finally generating the combined wing section blade. By means of the design method, the hydrodynamic performance of the combined wing section blade is made to be superior, and the energy-obtaining efficiency of the water turbine is remarkably improved.

The invention relates to a combined tidal current energy vertical shaft water turbine. The combined tidal current energy vertical shaft water turbine comprises an outer H structure, an inner S structure, a transmission structure and an outer frame supporting structure. S vanes are nested in H vanes and connected with a bearing structure through an extending arm of the H structure, the S vanes are directly fixed on a bearing, the H vanes and the S vanes move at the same rotating speed, movement displacement difference is absent, thereby the S vanes with high starting performances can drive an H wheel, and the using ratio of the energy is improved. The combined tidal current energy vertical shaft water turbine has the advantages of being high in efficiency, tidal current energy conversion efficiency and reliability, fast in starting, low in costs and good in entire stability.

The invention relates to a marine floating platform protection device and a cleaning method thereof. The marine floating platform protection device comprises a platform body; tidal current energy power generation equipment and a protection net supporting frame positioned on the surrounding are mounted at the bottom of the platform body; a side surface protection net is mounted on the external sideof the protection net supporting frame; a bottom protection net is mounted at the bottom of the protection net supporting frame; and the bottom protection net and the side surface protection net areintegrally connected with each other. A control chamber is formed in the platform body; a circular ring-shaped slide rail is mounted on the external surface of the platform body; guide grooves are correspondingly formed in the external surface, the upper end surface and the lower end surface of the slide rail; a running mechanism is mounted on the slide rail; and a protection net cleaning device is mounted on the running mechanism. According to the marine floating platform protection device, marine floating garbage can be prevented from being rolled into power generation rotation equipment towind and damage power generation equipment; and moreover, by mounting the running mechanism and the protection net cleaning device, the side surface protection net of the platform body is periodicallycleaned to prevent marine organisms from being attached to net eyes to block water flowing.

The invention relates to a tidal current energy electricity generation device which comprises an engine room, an electric generator, a tower, a current speed and direction sensor, a controller, a first brake, a second brake, a first impeller and a second impeller. The engine room is fixed on the tower, the first impeller and the second impeller are arranged at the two ends of the engine room respectively, a rotating shaft of the first impeller stretches into the room engine and is in linkage with an inner rotor of the electric generator, a rotating shaft of the second impeller stretches into the engine room and is in linkage with an outer rotor of the electric generator, the first brake is arranged at the position of an input rotating shaft of the inner rotor, the second brake is arranged at the position of an input rotating shaft of the outer rotor, and the controller is respectively and electrically connected with the current speed and direction sensor, the first brake and the second brake. A control method of the tidal current energy electricity generation device comprises the steps of controlling the brake state of the first brake and the brake state of the second brake according to a tidal current speed signal and a tidal current direction signal detected by the current speed and direction sensor, and achieving the aim of capturing the tidal current energy in forward and reverse tidal currents. According to the tidal current energy electricity generation device, a variable pitch or yaw mechanism is eliminated, the structure is simple, the cost is saved, a control program is simple, and the control precision and the energy utilization rate are improved.

The invention discloses a permanent magnet semi-direct-drive type tidal power generation device. The permanent magnet semi-direct-drive type tidal power generation device comprises a blade system, a transmission system, a power generation system, an alternating current system, a control system and a support system. The permanent magnet semi-direct-drive type tidal power generation device disclosed by the invention has the beneficial effects that the device can utilize tidal current energy for power generation and is safe and environment-friendly; the semi-direct-drive combination of a simple transmission device and a permanent magnet motor is adopted so as to be suitable for low water speed and low rotational speed, high in energy transformation ratio and good in power generation benefit; the underwater structure of the system is simple, the service life is long, the maintenance is simple and convenient, and the maintenance cost is low; the semi-direct-drive structure avoids the use of the low-speed permanent magnet motor, the blade system eliminates a yawing and pitch control system, the process requirements are low, and the technical implementation is easier than the direct drive type; and the manufacturing cost is reduced.

The invention provides an offshore wind power and ocean tidal current energy combined power generation device. The offshore wind power and ocean tidal current energy combined power generation device mainly comprises an offshore wind power generation subsystem, a tidal current energy power generation subsystem, a brace foundation system and an electric energy transmission system. The offshore wind power generation subsystem is fixed above the sea level through the brace foundation system. The brace foundation system is in a single-pile type foundation form. The tidal current energy power generation subsystem is installed beside the brace foundation system through an L-shaped supporting frame. The electric energy transmission system transmits electricity generated by offshore wind power generators and tidal current energy power generators to a power grid together. Ocean limited space resources are fully utilized; the ocean resource utilization rate is increased; the economic benefits of an offshore wind plant are increased; the tidal current energy power generation subsystem has the yawing function, tidal current energy can be fully acquired, and the power generation rate of equipment is increased.

The invention relates to a wind energy and ocean energy integrated generating set. The generating set comprises a tidal current energy driven generating set and a wave power driven generating set, wherein the tidal current energy driven generating set is arranged below the sea level and comprises a turbine and a rigid supporting frame; the turbine comprises an impeller rotating horizontally; the impeller is provided with a through hole; a vertical shaft is arranged on the rigid supporting frame; the impeller sleeves the vertical shaft via the through hole; the wave energy driven generating set comprises an oscillatory type floater; the oscillatory type floater is connected with the upper part of the vertical shaft and is positioned on the sea level. According to the wind energy and ocean energy integrated generating set disclosed by the invention, the impeller and the oscillatory type floater are together arranged on the same vertical shaft, so wave energy and tidal current energy can be transformed into kinetic energy of the vertical shaft; meanwhile, the power supplied to the impeller and the oscillatory type floater is increased, and energy transformation ratio is increased.

The invention discloses a variable-pitch mechanism of a tidal current energy electricity generation water turbine. The variable-pitch mechanism comprises a variable-pitch hub, a bevel gear wheel, bevel pinions, a blade shaft and blades; one end of the variable-pitch hub is connected with a speed reducer and a drive motor in sequence, and the speed reducer and the drive motor are arranged in an outer cover; the other end of the speed reducer is connected with the bevel gear wheel, and the bevel gear wheel is meshed with at least two of the bevel pinions; the blade shaft is arranged on the variable-pitch hub and can rotate by means of the rotation of the bevel pinions; the blades are arranged on the blade shaft. The variable-pitch mechanism of the tidal current energy electricity generation water turbine has the advantages that the drive motor and the speed reducer are installed at the front end of the variable-pitch hub, therefore, the structural size of the variable-pitch hub is effectively reduced, and the structure is compact; moreover, the outer cover of the water turbine adopts a streamlined design, therefore, the impact of water flow in the forward direction is effectively reduced, and the water turbine is safe and reliable; the mechanism of the drive motor and the speed reducer is adopted, therefore, accurate and reliable control over pitch angles is realized, large torque can be output, and synchronous pitch variation is facilitated.

The invention provides a double-stand-column lifting type tidal current energy power generation seaborne test device, which comprises a sea bottom type support base, two parallel stand columns, a liftable working platform and a maintenance platform, wherein the stand columns are fixedly arranged on the sea bottom type support base; the liftable working platform is arranged on the stand columns in a sliding mode; the maintenance platform is fixedly arranged on the upper end parts of the stand columns; the maintenance platform is provided with a winch; the traction rope of the winch is connected with the liftable working platform; and the middle of the maintenance platform is provided with a space through which the liftable working platform passes. According to the double-stand-column lifting type tidal current energy power generation seaborne test device, different tidal current energy power generation equipment can be tested. The double-stand-column lifting type tidal current energy power generation seaborne test device is simple in structure and can be repeatedly used, and the tidal current energy power generation seaborne test cost is lowered.

The invention provides a tidal current energy and vortex-induced vibration energy comprehensive power generation device. The tidal current energy and vortex-induced vibration energy comprehensive power generation device comprises a tidal current energy water turbine and a vortex-induced vibration energy capturing device. A power generator, a power distribution box and a rectifying and voltage-stabilizing device which are sequentially connected with an impeller through wires are arranged in a power generator cabin of the tidal current energy water turbine. The vortex-induced vibration energy capturing device comprises a shell, a vibrator sliding along a guide rail, and a piezoelectric plate, wherein the shell is mounted on the rear side of a single pile foundation, the two end edges of the vibrator are arranged on the top surface and the bottom surface of the shell, and the two ends of the piezoelectric plate are connected with the vibrator and the rear end face of the shell correspondingly; and a conductive copper sheet is arranged at the end, connected with the rear end face of the shell, of the piezoelectric plate and sequentially connected with the rectifying and voltage-stabilizing device and the power distribution box located in the power generator cabin through wires. Water flow enters the shell after encountering the single pile foundation of the water turbine, vortexes falling alternately are generated on the two sides of the pile foundation, and vortex resonance is formed when the vortexes pass through the vibrator; and under the wake flow galloping effect, the vibration amplitude of the vibrator is greater than the vibration amplitude caused by resonance of ordinary vortexes, the vibrator drives the piezoelectric plate to swing left and right, and thus mechanical energy is converted into electric energy.

The invention provides a hexagonal semi-submersible type tidal current energy and wind energy power generation platform which comprises a hexagonal platform structure and a main floating body. The hexagonal platform structure comprises a hexagonal frame. The six vertexes of the hexagonal frame sequentially comprise a first vertex, a second vertex, a third vertex, a fourth vertex, a fifth vertex and a sixth vertex in an anticlockwise mode. A first box beam, a second box beam and a third box beam are mounted between the six vertexes. A first variable cross-section floating barrel, a second variable cross-section floating barrel, a third variable cross-section floating barrel, a fourth variable cross-section floating barrel, a fifth variable cross-section floating barrel and a sixth variable cross-section floating barrel are mounted below the six vertexes respectively. The main floating body is arranged between the first variable cross-section floating barrel and the fourth variable cross-section floating barrel, a first stand column is arranged between the junction of the first box beam and the second box beam and the main floating body, and a second stand column is arranged between the junction of the first box beam and the third box beam and the main floating body. A first water turbine lifting device, a second water turbine lifting device and a third water turbine lifting device are mounted between the first box beam and the main floating body. According to the hexagonal semi-submersible type tidal current energy and wind energy power generation platform, the excellent stability can be guaranteed, and the sea keeping performance is greatly improved; in addition, water ballast spaces are arranged in the six floating barrels and can be used for adjusting the water volume inside so that the floating state of the platform can be guaranteed.