160 results about "Hydro turbines" patented technology

The invention relates to the use of Air and Hydro Turbines for power generation. It seeks to enhance the energy-capturing potential of air / water turbines, and hence expand the geography where they can be used. It is mainly represented by a device consisting of a vortex generator and a vortex accelerator. This vorticity device operates in a combination of 2 modes: (1) Control airfoil circulation at the blade tips and hence control or alleviate the aerodynamic loading on the turbine blades. (2) Induce suction that can be used to transfer momentum to the flow close to the surface of the blade. Specifically, the generated suction drives secondary fluid flow, which is used to enhance the aerodynamic characteristics of the turbine blades / wings, by doing the following: (1) Suppressing adverse pressure gradients, (2) Suppressing the stall or separation bubble, (3) Laminarize the flow over the blade or wing.

A power plant extracts energy from a free flowing motive fluid by means of a turbine mounted on a gimbal. The shroud element of the fluid intake has external rudders, in conjunction with the gimbal mounting, enabling the enclosed turbine to instantaneously respond to changes in the direction of the free flowing motive fluid thus ensuring the face area of the intake is always physically orthogonal to the direction of the motive fluid streamlines. The shroud element may also be buoyant so as to optimally extract energy from an upper non-turbulent and higher velocity layer of the free flowing motive fluid. To function within an inherently unsteady source of energy, the preferred embodiment of the turbine is coupled to a DC generator which may further be coupled to a voltage and current regulating circuit which either charges a battery, performs electrolysis of water to produce hydrogen fuel, or is further coupled to a DC motor coupled to an AC generator. Alternatively an AC induction generator may be coupled to the turbine. Other mechanical, electrical, electronic, or electromechanical features may optionally be implemented to perform such tasks as adaptively locating the turbine in the maximum velocity flow, adapting internal vane and runner blade pitches for various flow rates and loads, keeping the intake free of obstructions, preventing loss of aquatic life, controlling and communicating the state of charge of the battery, or gauging and controlling the electrolysis process and communicating the fullness of the hydrogen gas output tanks.

A water driven turbine has a divergent cone coupled to the exit end of the housing in which diameter of the cone increases with increasing distance from the exit end of the housing. A diverter formed of rigid material surrounds the free end of the cone and defines an annular space therebetween through which a flow of water passes to accelerate the flow exiting the turbine housing. The diverter is shorter in the length than the divergent cone and longitudinally overlaps the divergent cone. The diverter also has straight walls which are sloped to extend in the longitudinal direction away from the exit end of the housing at an inward incline between the leading end and the trailing end thereof.

The apparatus may include a space frame on which is mounted at least one hydrofoil for generating positive or negative lift. The frame is attachable to underwater equipment such as a turbine. The hydrofoils are adapted to produce negative lift when a flow of liquid passes over them and so in use cause the apparatus and attached equipment to sink to the seabed. The flow of water over the hydrofoils continue to produce negative life and so maintain the apparatus on the seabed. In certain embodiments, the hydrofoils can typically be set to a passive configuration in which they flip over when the current flow changes direction. Furthermore, the hydrofoils are selectively rotatable to provide an angle of attack such that they may be adapted to provide positive lift when it is necessary to remove the apparatus from the water.

Kinetic energy contained in oceans, rivers and channels can be converted to power using kinetic hydro turbines. These turbines can be tethered to the ocean floor, riverbed and channel bottom and their vertical position within the water column controlled. A method is disclosed that permits to increase the power extracted by the turbine by modifying the boundary layer using a shaped object located upstream of the turbine to increase the flow velocity through the turbine. The object also provides protection during climatic events like spring ice breakup, logs and storms that could damage the turbine. Additionally the shaped object can allow the turbine to be tethered to it. The shaped object can be made symmetric to allow operating in tidal conditions where the flow direction changes periodically. On site manufacturing can also alleviate overall costs.

An ultra-large hydroelectric station can turn the kinetic energy generated through flowing seawater and flowing river water into mechanical energy, and then turn the mechanical energy into electric energy, and in this way, people can use clean and low-cost electric energy. Specifically, according to the ultra-large hydroelectric station, a water turbine central spindle is fixed in a movable mode, the position of a water turbine is unchanged and the water turbine is accumbent on the flowing water surface towards the direction of water flow. One half of the water turbine is in the water and the other half of the water turbine is in the air. Propellers of the water turbine are powered by waterpower to drive the water turbine to rotate. The rotating of the water turbine drives a generator to produce electricity and produce the electric energy day and night. The ultra-large hydroelectric station is arranged over the sea and the river all around for tens of thousands of square kilometers and produces huge electric power for the whole of China. The hydroelectric station belongs to a clean energy, a renewable energy and a lowest generating-cost energy. Even in the next one thousand years and the population of China reaches five billion, the power supply can also be met. The hydroelectric station can thoroughly solves the energy problem, the haze problem and the climatic change problem in China, and is the only right way for the current electric energy and energy development in China.

Disclosed is a system for controlling a water turbine generator for waterworks, which monitors and controls a plurality of water turbine generators, provided in a water pipe, for waterworks in real time to integratedly operate the water turbine generators, contributes to stably generate and secure power, and increases an efficiency of the water turbine generators through integrated management. The system for controlling a water turbine generator for waterworks includes an integration control system configured to establish a power generation driving plan, based on a target amount of energy collected by a plurality of water turbine generators and a driving range of each of the plurality of water turbine generators, and a power generation unit configured to generate power through generation of power by a water turbine according to control based on the power generation driving plan, measure an amount of generated power, an amount and a pressure of water flowing into the plurality of water turbine generators, and an amount and a pressure of water flowing out from the plurality of water turbine generators, and supply a result of the measurement to the integration control system.

The invention discloses a secondary jet impulse water turbine. The water turbine is characterized in that an impeller is welded by a multilevel cymbiform blade and disc-shaped protecting sheets at two sides and a rotating wheel drawing group, and the rotating is internally connected with a combining cover type wheel shell through a ball bearing; the wheel shell is composed of a dish lower cover and a basin upper cover, the lower cover is utilized as a horizontal installed engine base for a water turbine and connected with a foundation bolt of reinforced concrete foundation in a fastening mode, thereby ensuring the operative stability of the water turbine; a two-stage continuous jet impactive manner is adopted for a power water source to drive the impeller to rotate to do work so as to drive a generator to operate to generate electricity; the power water source entering the water turbine pushes the impeller to rotate and processes along with the cymbiform blade and impeller, and enters into a drained area of the water turbine when the impeller rotates at 180-190 degrees; and dynamic water flow rushes and enters into a drain pipe of the water turbine along a discharge opening under the action of motion inertance and centrifugal force, and flows a water storage tank under the leading of the outer drain pipe for a water pump in the water storage tank to extract and then the extract water enters a water supply tower for reuse. The purpose of the water turbine provided by the invention is as follows: overcoming the defects of large vibration and the like of an existing spiral case type water turbine, and trying to excavate the work potential energy of the power water source further so as to reform the mode that the shaft flow type or mixed flow type is taken as a leading power water current to do work in the existing spiral water turbine.

An integrated power system combining tidal power generation and ocean current power generation comprises: constructing barrages across the sea to make up a lake; installing turbine structures of a tidal power plant and sluice structures of a tidal power dam for generating electricity by using the potential energy difference between seawaters caused by tides and ebbs; forming an ocean current power park in a lake side by installing a plurality of ocean current generators, for generating electricity by using the flow of the seawater discharged through turbine generators, in a rear lake side of the turbine structures of the tidal power plant; and forming an ocean current power park in a sea side by installing ocean current generators, for generating electricity by using the seawater with the fast speed discharged into the sea through sluice gates, in a rear sea side of the sluice structures of the tidal power dam.

The invention relates to a water turbine used for operations such as hydroelectric power generation, water pumping and the like by using nature water flow and low water head. The water turbine is characterized in that a water wheel is composed of a floating barrel and blades provided with independent seal cavities, the water wheel rotates by absorbing water energy so as to provide power for the water turbine and generally provide buoyant force support for the water turbine simultaneously; and the water turbine is divided into a built-in type water turbine and an external type water turbine and the main difference between the two types of water turbine is that a generator, a gear case and the like are placed inside or outside the floating barrel. The water turbine provided by the invention has the advantages of low manufacturing cost and operating cost and high energy conversion rate, and is applicable to multiple occasions.

The invention relates to a waste steam, condensate water and cooling water regenerating device of a thermal power plant and a nuclear power plant. The device provided by the invention is characterized in that after steam drives a turbine to generate power, the swelling pressure of the turbine is reduced, but the steam quality of the turbine is not reduced; the waste steam is pressed into a platform with a certain height relative to the ground through a pipeline under 3 to 4 atmospheric pressures (while the higher height is better but according to actual conditions); after being cooled through a highly vacuum condenser, the waste steam is changed into liquid water at a temperature of about 40 DEG C; after being exhausted and stored into an upper water storage tank at the lower part, the liquid water leaks downwards through a pressure pipeline to drive the turbine; the turbine drives a generator to generate the power; the cooling water is lifted to the height which is the same to the condenser through a circulating water pump; the waste heat is taken away by the condenser; after being exhausted and stored into another upper water storage tank at the lower part, the waste heat leaks downwards through the pressure pipeline to drive the turbine; and the turbine drives the generator to generate the power (while the cooling of the condenser is divided into water cooing and air cooling, if the air cooling is adopted, a cooling water generating device is not provided).

An object is to provide a mixed flow turbine, wherein intermediate blades having an intermediate height are provided between main blades of the mixed flow turbine, thus improving an impulse blade turbine characteristic and reducing the moment of inertia for a rotor blade as a whole, thereby improving the efficiency and transient response. The mixed flow turbine includes: a turbine rotor blade 11; a turbine housing 3; a scroll partition wall 17 dividing a scroll chamber 13; a shroud-side inflow passageway 35 formed on the side of a shroud-side partition wall surface 25; and a hub-side inflow passageway 29 formed on the side of a hub-side partition wall surface 23, wherein the rotor blade 11 includes: main blades 37 formed with a height spanning the entire extent between a hub outer circumferential surface 31 and the inner periphery surface of a shroud portion 15; and intermediate blades 39 arranged in the circumferential direction between the main blades 37 and arranged so as to extend from the inlet portion of the main blades 37 to an intermediate portion and having an intermediate height with respect to the height of the main blades 37, wherein a fluid from the hub-side inflow passageway 29 flows in through front edges of the intermediate blades 39.

The invention provides a pump turbine first quadrant characteristic curve theoretical prediction method. Based on a turbine Euler equation, geometrical form parameters including a pump turbine runner inlet / outlet diameter, a rotating-in blade inlet / outlet mounting angle, a guide vane opening and the like are utilized, and the impact loss of a runner inlet, the water head loss in a runner and a tail water pipe, and a centrifugal force acting item are considered to obtain the reversed S characteristic of a pump turbine and a turbine area characteristic curve. The pump turbine first quadrant characteristic curve theoretical prediction method is applicable to an early stage development design of the pump turbine in a water pumping energy accumulation power station, and prediction and guide directions are provided for reversed S characteristic influences on the runner by the geometrical parameters of the pump turbine; and before the runner is subjected to a hydraulic model test, a turbine area primary characteristic curve is provided for an early stage adjusting guarantee design of the power station, and partial calculation and evaluation of adjusting guarantee is carried out, so that manpower and financial resources are saved, and the design efficiency is improved.

As an electric power generation system using the high altitude wind which is more steady and stronger at the high altitude up to about 15Km above sea level, the power generation system consists of a rotary generator (8) derived by a hydro turbine (7) attached under a ship-like floating platform (5) towed by a parafoil (1) flying at high altitude, controlled by a servomotor (3), which is remotely controlled through electric wire or wireless communication. Accordingly, the diameter of the turbine driven by sea water is reduced as 1 / 20 in comparison with the windmill which uses directly high altitude wind, and the periodical maintenance becomes convenient by locating the heavy mechanical moving parts near the surface of sea.

The invention relates to a tidal current energy power generation device, in particular to a vertical shaft tidal current energy power generation device. The vertical shaft tidal current energy power generation device comprises an auxiliary starting water turbine, a connecting block, a main water turbine, a rotating shaft, a first bevel gear, a control cabinet, a second bevel gear, a generator, a connecting and disconnecting device and the like. When the seawater flow speed is low, a resistance-type auxiliary starting water turbine auxiliary starts a lifting-type main water turbine, so that themain water turbine rotates even when the seawater flow speed is low, and the overall power generation output is improved; when the seawater flow speed is high, the resistance-type auxiliary startingwater turbine and the lifting-type main water turbine independently operate without dragging the lifting-type main water turbine, and the main water turbine independently drives the rotating shaft torotate to generate electricity, so that the power generation output is greatly improved; and the main water turbine adopts a double-layer blade with an end plate, the end plate can effectively restrain vortex at the end portion of the blade and improve power output, the torque of the double-layer blade is larger than the torque of a single-layer blade, and the power is higher.

The invention relates to a fire-fighting technology and discloses a high-expansion foam generator. The high-expansion foam generator is characterized by comprising a cylindrical shell, a hydroturbine, a fan blade impeller, a foaming net, a header pipe and a plurality of nozzles, wherein the foaming net is arranged on a main shaft of the hydroturbine; the foaming net is arranged at one end of the shell; the header pipe is communicated with an external foam liquid source; the nozzles are arranged at the other end, over against the foaming net, of the shell; an central outlet of the hydroturbine is communicated with the nozzles respectively through pipelines; a tangential inlet of the hydroturbine is communicated with the header pipe respectively through pipelines; the wind direction of the fan blade impeller points at the foaming net. In the high-expansion foam generator, the foaming net is sawtoothed, so the foaming area is increased; motion airflow generated by the hydroturbine and the fan blade impeller which are mounted in the shell can guarantee distribution uniformity of air in the outer cylinder, so the foaming expansion is increased; the hydroturbine adopts liquid actuation, so energy can be saved; the high-expansion foam generator has the advantages of large foaming quantity, high fire extinguishing speed, safety and reliability.

The invention discloses a water turbine with multiple vanes. The water turbine comprises volutes, rotating wheels, a support cover, a bearing, a bottom ring and a drainage pipe. Nozzle rings are arranged in volute spiral runners and on the radial peripheries of the rotating wheels, orifices for jetting liquid flow to drive the rotating wheels are arranged on the nozzle rings at equal intervals, vanes are evenly arranged on the circumferences of the rotating wheels at equal intervals, and arc-shaped runners matched with the liquid flow jetted by the orifices are formed between the vanes. The runners of the water turbine with multiple vanes can convert not only kinetic energy of the liquid flow but also part of potential energy of the liquid flow; within a certain range of revolving speed, output power and flow are basically in a linear relationship, so that a complex adjustment and control system is not needed; and the structure of the water turbine is greatly simplified, the production process is simple and the cost is reduced. The water turbine is compact in structure, applicable to purposes such as small-size (miniature) hydroelectric generation and conversion from liquid dynamic energy to rotary mechanical energy in pipelines.

The invention provides a floating-barrel type tidal current energy generating device which comprises a mooring system, a carrier and a water turbine / generator set. The floating-barrel type mooring system is used for mooring the carrier provided with the water turbine / generator set. The carrier is of a transversely-arranged door structure, wherein the door is shaped like a Chinese character 'ri'. The carrier comprises a streamline body, a personnel operating platform and a two-line water turbine / generator set support. The water turbine / generator set is used for converting motion energy of tidal currents into electrical energy and formed by connecting a water turbine, a generator and an accessory coaxial line in series. The water turbine / generator set is of a two-line contra-rotating type and is installed inside space of the carrier. The floating-barrel type tidal current energy generating device has the advantages that the floating-barrel type tidal current energy generating device does not need to be carried under a floating-type platform and on a pipe foundation or a tension leg, and therefore yawing force generated when the single-rotor water turbine operates is eliminated. Meanwhile, the generating device is simple in structure, low in production and manufacturing cost, convenient to install and maintain, economical, stable in generating performance, and suitable for being applied to a high sea state environment with rich tidal current energy.

The invention relates to a double-direction guide vane impact turbine wave-force power generation system. The system comprises a water port arranged underwater, wherein the water port is provided with an overflowing channel through an outer water channel, the overflowing channel is provided with a water turbine rotor driving an electric generator, the overflowing channel is connected with the bottom of a water box through an inner water channel, the bottom, connected with the inner water channel, of the water box is relatively small, the upper portion of the water box is relatively large, the bottom of the water box is in smooth transition connection with the upper portion of the water box to form a horn shape, an upper opening of the water box is open, the water turbine rotor is an axial water turbine rotor rotating in a single direction. According to the double-direction guide vane impact turbine wave-force power generation system, a double-direction guide vane impact turbine which is a water turbine with impact water flow flowing in the axial direction of the rotor is adopted. By using the axial water turbine, compared with an existing system using a double-impact water turbine, the double-direction guide vane impact turbine wave-force power generation system has the advantages that the length of the flowing channel of the rotor is irrelevant to the diameter of the rotor, the diameter of the rotor can be freely selected according to the magnitude of energy contained in the impact water flow, and inherent frequency of the system will not be affected.

The invention provides a method for simulating a value of a hydrodynamic effect of a tidal current energy turbine array on the basis of dynamic generalization. According to a characteristic that a turbine has different running states under different water flow velocities, when the water flow velocity is greater than a cut-in flow velocity and smaller than a cut-out flow velocity, a corresponding value of a drag coefficient is obtained by fitting a drag force discrete value provided by a turbine type, so that the obvious defect that the drag coefficient in a conventional tidal current dynamic model is kept as a constant is made up, and not only influence of form drag of a turbine generating set is considered, but also influence of a drag force (energy loss) generated by energy extraction when the turbine operates to generate electricity on a flow field is considered, thereby more accurately evaluating the hydrodynamic effect of the tidal current energy turbine array on a surrounding sea area. The method has the Important significance for reasonable development and utilization of tidal current energy.

The invention relates to an energy-saving cooling tower with an auxiliary motor. The energy-saving cooling tower comprises a tower body, a wind tunnel, a water turbine, a water intake pipe, a gearbox and blades. The wind tunnel is installed on the tower body. The water turbine is connected with the water intake pipe. The water turbine is connected with the gearbox through a transmission shaft. The blades are connected with the gearbox. The energy-saving cooling tower is characterized in that the tower body is provided with the auxiliary motor which is connected with the gearbox through the transmission shaft. In comparison with the prior art, the invention has the following advantages and effects: the structure of the energy-saving cooling tower is simple; revolving speed of the blades can be adjusted automatically so as to adjust the cooling effect; energy is saved; and the cooling tower can operate under the condition of insufficient hydraulic pressure in the water intake pipe, and the cooling effect can be guaranteed.

The invention relates to an equiangular spiral water turbine generating power through tidal current energy. The equiangular spiral water turbine comprises a main shaft, a case, a thrust bearing, a coupler, a power generator, a rack, a base and a water guide cone. The rack and the base are used for supporting the lower portion of the case. The equiangular spiral water turbine is characterized by further comprising the spiral blade which is in a two-dimensional equiangular spiral shape, a cone-like hub immersed in water tidal current, and a sealing cover; the power generator is connected with the cone-like hub through the coupler and the main shaft; the sealing cover is arranged at the connecting position of the main shaft and the cone-like hub; the water guide cone is arranged at the position, on the rear side of the cone-like hub, at the tail portion of the case; and the spiral blade gradually stretches in the axial direction of the cone-like hub through the thrust bearing to form a spatial warping shape so as to be evenly distributed on the periphery of the cone-like hub to conduct the constant-speed rotation movement. By means of the equiangular spiral water turbine generating power through tidal current energy, hydraulic frictional impacts are greatly reduced, inlet head losses are reduced, and therefore the energy obtaining effect of the water turbine is improved, and the purposes of making ocean fish schools smoothly pass through and the like are well achieved.

The invention relates to an ultra-large type hydroelectric power station. Flowing seawater and river water can produce kinetic energy, the kinetic energy can be converted into mechanical energy, and the mechanical energy can be converted into electric energy, so that the clean and low-cost electric energy can be provided for people. The ultra-large type hydroelectric power station is characterizedin that a shaft core of a water turbine is movable fixed, a position of the water turbine is unchanged, the water turbine is horizontally arranged on a flowing water surface and facing a water flow direction, half of the water turbine is in water, the other half of the water turbine is in air, bladed propellers of the water turbine in water push the water turbine to rotate under the hydraulic impulse, and the water turbine rotates to drive an electric generator for generating electricity, so that electric energy can be generated day and night. The hydroelectric power stations are arranged onthe sea and the river for tens of thousands of square kilometers front and back as well as left and right, and can generate huge electric energy for the whole of China.