758results about "Reaction engines" patented technology

A wind energy plant with a nacelle, a rotor, which features at least one rotor blade adjustable in its blade pitch angle, a central control device for controlling the wind energy plant and a control unit disposed in the rotor for controlling the blade pitch angle of the at least one rotor blade, wherein the central control device and the control unit in the rotor can exchange data with each other via a data link, which comprises at least one first sending and receiving device at the nacelle side and at least one second sending and receiving device at the rotor side, wherein a wireless network connection with a safety-oriented communication protocol is provided between the at least one first sending and receiving device and the at least one second sending and receiving device, and that one monitoring- and communication device at a time is associated to the first and / or the second sending and receiving device, which can monitor the function of the sending and receiving device and initiate a predetermined action in the case of an error.

The invention particularly discloses a visual monitoring system and an analysis method for the abrasion state of an impulse turbine set, and relates to the technical field of hydroelectric power generation equipment monitoring. The device comprises a visual monitoring module, a control module and an abrasion analysis early warning module, the visual monitoring module collects images through an industrial camera, an LED light source, a packaging protection structure and a water and mist removing device. The control module formulates an imaging mechanism according to working conditions such as strong water mist interference, idling no water, static no water and the like, and is linked with a unit PLC control system to realize imaging triggering, state adjustment and data interaction; and the abrasion analysis and early warning module identifies an abrasion area through a U-Net + + algorithm, calculates abrasion parameters based on a multi-view vision technology, grades the abrasion parameters, predicts a trend by adopting an ARIMA model, and recommends a maintenance scheme through rule reasoning in combination with threshold early warning. Automatic and intelligent monitoring and analysis of the abrasion state of the impact type unit are achieved, and guarantee is provided for safe and efficient operation of the unit.

The utility model discloses vertical shaft hydroelectric power generation equipment which comprises a power generation module and a power output module, the power generation module comprises a floating platform, a power generator and a power input shaft, the power input shaft is vertically arranged and arranged on the floating platform in a swinging mode, the power generator is arranged on the floating platform, and a motor shaft of the power generator is in transmission connection with the power input shaft; the driving module comprises a water wheel assembly, the water wheel assembly comprises a plurality of blades, the blades are distributed around the rotating axis of the water wheel assembly, and the water wheel assembly is connected with the power input shaft; the counterweight assembly comprises a connecting rod, a rotating seat, a first anchor chain and a first counterweight part, the lower end part of the connecting rod is rotatably arranged on the rotating seat, and the first anchor chain is connected between the rotating seat and the first counterweight part; the upper end of the connecting rod is connected to the bottom of the water wheel assembly. The power generation efficiency of the hydroelectric power generation equipment is improved.

The utility model discloses a water wheel driving module and hydroelectric power generation equipment, the water wheel driving module comprises two mounting discs and a plurality of blades, and the two mounting discs are arranged up and down; each blade comprises a mounting frame and a plurality of baffles, a plurality of through holes are formed in the mounting frame, and the baffles are hinged to the mounting frame and arranged at the corresponding through holes; the baffle is configured to be located on the incident flow face of the blade to close the through opening, and the blade is further configured to be located on the back flow face of the blade to open the through opening. The multiple blades are distributed around the axis of the installation discs, and the installation frame is vertically arranged and fixedly arranged between the two installation discs. The use reliability and the power generation efficiency are improved, and the manufacturing cost is reduced.

The invention relates to the technical field of hydroelectric generation, in particular to an impulse turbine, a water bucket and a mortise and tenon joint structure for the water bucket and a hub. The water bucket comprises water bucket blades and tenons arranged at the roots of the blades; the shape of the tenon is configured to be movably assembled with a mortise formed in a hub of the water turbine in a fit clearance mode. According to the structure, a movable assembly mode with a fit clearance can be realized, and the water bucket can generate limited displacement in a gradual change clearance under different jet flow impact load conditions, so that the original traditional rigid connection is changed into flexible movable connection. The water bucket can be reliably connected with the hub without depending on welding or bolt fixing, and the common problem that in an original mode, a water head and a hub welding seam are prone to breakage under high-strength water impact force is solved.

This invention discloses a wave energy and solar energy combined power generation device and its power station, belonging to the field of new energy technology for power generation using renewable energy. It includes floating boxes and photovoltaic panels. Adjacent floating boxes are hinged laterally to the same horizontal axis. The photovoltaic panels are arranged on the surface of the floating boxes at an angle facing south or horizontally. A connecting rod perpendicular to the horizontal axis is hinged to the horizontal axis. A hydro-generator and a passive piston pump for driving the hydro-generator are installed inside the floating box. The piston rod of the passive piston pump is hinged to the connecting rod at a position away from the horizontal axis. When adjacent floating boxes swing up and down around the horizontal axis, the passive piston pump completes the water intake and drainage actions, and drives the hydro-generator during drainage. This invention as a whole can realize the combined power generation of wave energy and solar energy. During the swinging of the floating boxes, the orientation of the photovoltaic panels can remain approximately unchanged, thus ensuring the utilization efficiency of the photovoltaic panels while fully utilizing wave energy.

The utility model belongs to the technical field of power generation equipment, and particularly relates to a speed increasing mechanism which comprises a box body, a speed increasing module is arranged in the box body, the speed increasing module comprises a shell, and a rotating disc and a rotating shaft are arranged in the shell. The rotating disc comprises a central column and a disc, the rotating shaft comprises a shaft rod and a gear, the shaft rod is perpendicular to the central column, the gear is coaxially fixed to the shaft rod, and the gear is meshed with insections on the disc; the rotating disc rotates to drive the shaft rod to rotate synchronously. A plurality of speed increasing modules are provided; and in every two adjacent speed increasing modules, the shaft rod of one speed increasing module is in transmission connection with the central column of the other speed increasing module. According to the utility model, energy obtained by a plurality of speed increasing modules can be concentrated on the shaft rod of one speed increasing module to be output uniformly, and meanwhile, multi-stage speed increasing can be realized.

The invention relates to the technical field of hydroelectric generation, in particular to a method for determining distribution parameters of an impulse turbine, a water bucket and a pin column. The water bucket is of a double-bowl-shaped structure which is symmetrical along the water diversion blade, the water bucket is provided with an upstream face used for bearing water flow impact and a downstream face opposite to the upstream face, a plurality of pin columns are embedded in the downstream face in the normal direction of the downstream face, and the ends of the pin columns are matched with the surface of the upstream face to form a continuous smooth curved face of the upstream face. Under the conditions of high water head and sediment, deformation and cracking of the bucket and even damage of bucket breakage are avoided, and the service life of the bucket is prolonged.

The present application provides an impulse water turbine, an anti-erosion water bucket and an anti-erosion structure setting method. The water bucket has a double-bowl structure symmetrically along a water distribution edge. The water bucket has a water-impingement surface for bearing the impact of water flow and a backwater surface opposite to the water-impingement surface. The concave-convex points of the water-impingement surface are distributed in an array on both sides of the water distribution edge, the downstream area, the water outlet edge area and the water outlet area. The array of the concave-convex points on the inner surface of the water bucket can form a water film in the concave points under the impact of strong water flow. The water film generates a certain tension, thereby buffering the impact of the silt and protecting the inner surface of the water bucket. The anti-erosion performance of the water bucket of the impulse water turbine under the condition of high silt content can be greatly improved, and the problems of easy erosion, easy fracture and greatly shortened service life of the water bucket of the impulse water turbine under the conditions of high silt, high water head and strong impact force can be effectively solved.

A runner for a hydraulic turbine, including a hub and a plurality of pivotable blades extending from the hub. Each pivotable blade of the plurality of pivotable blades includes a root located at the hub, a tip opposite the root, and a leading edge. Each pivotable blade of the plurality of pivotable blades is pivotable relative to the hub about a respective pivot axis. For at least one blade, the leading edge at the root is positioned along a radial axis of the runner and the leading edge at the tip is cantilevered beyond the radial axis in a circumferential direction of the runner.

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.

The invention relates to the field of bulb through-flow turbines in hydropower stations, discloses a method for calculating the maximum runaway speed of a bulb through-flow turbine, and solves the problems that in the prior art, a scheme for calculating the maximum runaway speed of the bulb through-flow turbine under the working condition that guide vanes and runner blades are not in joint cooperation is inaccurate in calculation; the difference between the actual value and the actual value is large, and the requirement for hydropower engineering construction of a new device with a bulb tubular water turbine generator set cannot be met. According to the method, data of a large number of bulb tubular hydroelectric generating sets which run well at home and abroad for recent 30 years are collected and arranged, and then a nonlinear regression method is adopted to fit a complex relation among the data, so that a calculation formula of the maximum runaway rotating speed under the non-joint working condition is obtained. In practical application, the maximum runaway rotating speed under the non-joint working condition can be quickly and accurately calculated by substituting the rated specific rotating speed value, the maximum water head value and the nominal diameter value of the rotating wheel of the bulb tubular turbine with the maximum runaway rotating speed to be calculated into the maximum runaway rotating speed calculation formula.

Methods and systems for generating hydrogen gas from a source of pressurized water, for example, from an existing water main of a water distribution system, are provided. The methods and systems employ turbine / generators and water electrolyzers electrically powered by the turbine / generators. The turbine / generators are powered by the energy available in existing water distribution systems, for example, municipal, industrial, or agricultural systems, to access energy that typically is discarded, for example, via a pressure relief valve. The hydrogen gas generated may be used to fuel hydrogen powered vehicles, for example, cars, trucks, and forklifts, or as a fuel for power generation. Excess electrical energy produced by the generator may be distributed to the local power grid. Aspects of the invention may also be used to generate oxygen gas from the electrolysis of water, and then generate ozone gas from the oxygen gas for treating water, among other uses.

A centrifugal turbomachine (1) according to one embodiment includes: a pair of impellers (2A, 2C) in which back surfaces (21) thereof face each other; a shaft (3) interposed between the impellers (2A, 2C); and a fluid bearing (7) that supports the shaft (3) in a non-contact state. The fluid bearing (7) includes a bearing pad (71) in which a plurality of pockets arranged in a circumferential direction are formed on an inner peripheral surface. The centrifugal turbomachine (1) further includes a seal component (8) interposed between the fluid bearing (7) and the high-pressure-side impeller (2A) of the impellers (2A, 2C). The seal component (8) forms a chamber with the bearing pad (71), and the bearing pad (71) is provided with at least one through-hole that penetrates the bearing pad (71) in the axial direction of the shaft (3).

The utility model relates to a pipeline generator impeller chamber which is arranged in a pipeline and used for placing an impeller for driving a generator rotor. The impeller chamber comprises a water inlet and a water outlet, the water inlet is connected with the upstream of a pipeline, the water outlet is connected with the downstream of the pipeline, and the inner wall of the impeller chamber comprises two arcs which are different in radius and are concentrically arranged; the water outlet is arranged between the two arcs with different radiuses, and the water inlet of the impeller chamber is lower than the water outlet. Through the irregular circular structure of the impeller chamber, the water flow forms vortex, the kinetic energy of the water flow is fully utilized, and the power generation efficiency can be improved.

The invention provides a runner blade optimization method of a mixed-flow water turbine and a runner. The method comprises the steps that a full-flow-channel three-dimensional model of a flow passage component of the mixed-flow water turbine in the water flow direction is established; a mixed turbulence model is selected, boundary conditions are set, simulation results of the runner under different design working conditions and critical working conditions are obtained, and a core loss area restricting maximum output is determined; setting meridian plane parameters, airfoil section parameters and space distortion parameters of the runner blade according to the position of the core loss area; based on the multiple sets of blade parameters, parameterized models of the runner blades are established respectively; comparing and analyzing simulation results of the plurality of parameterized models under the same working condition, and screening target blade parameters with high relevancy with the maximum output; and based on the target blade parameter, optimizing the runner blade so as to improve the maximum output of the mixed-flow water turbine. Through the optimization method provided by the invention, the problems of insufficient flow field coupling consideration, limited parametric modeling dimension, single optimization target and the like are solved.

A fully-submerged multi-stage Horizontally-oriented Conical-helical Hydrokinetic Turbine that captures water stream flows (river, tidal, deep ocean currents) and funnels this kinetic-rich concentrated flow into a conical turbine system consisting of a rotating arrangement of helical hydrofoil blades wherein the internal stream is forced to exit out through the frustum turbine blade assembly. With a higher Capacity Factor and Power Coefficient than conventional renewables, this turbine is designed to be an environmentally friendly baseload electricity generator to meet the ever-increasing electricity demands.

The invention discloses a radial impeller-driven rotary spray head, a water distribution disc, a cooling tower and a watering method. The radial impeller-driven rotary spray head comprises a flow guide barrel, an impeller mechanism, a watering cap and a limiting cover, the impeller mechanism is arranged in the flow guide barrel; the watering cap is connected with the impeller mechanism; the limiting cover is connected with the lower side of the flow guide barrel and is rotatably connected with the impeller mechanism; the flow guide barrel comprises a spiral flow guide piece and is used for changing the direction of water flow to impact the impeller mechanism in the radial direction, the impeller mechanism is used for receiving impact in the direction of the water flow flowing out of the flow guide barrel, rotating and driving the watering cap to rotate, and the limiting cover is used for rotatably fixing the impeller mechanism. The spiral flow deflectors are adopted, and water flow radially pushes blades of the impeller mechanism after passing through the spiral flow deflectors, so that the impeller bears larger radial kinetic energy.

A system for generating electricity using the earth's gravitational field for its motive force includes twin electricity generators. Each electricity generator includes a water tower that is vertically juxtaposed with a linear generator. A shuttle, when dropped from the top of a water tower accelerates for engagement with a linear generator at a constant engagement velocity. An electro-magnetic engagement between the shuttle and the linear generator provides the system's output. Its input is provided by a mechanical drive unit that reciprocatingly manipulates water levels in both of the water towers to drive the system.

The invention relates to the technical field of through-flow turbines, and particularly discloses a through-flow turbine control ring auxiliary sliding bearing and a through-flow turbine. An auxiliary sliding bearing for a control ring of a tubular turbine comprises an anti-wear block and an anti-wear part arranged on the same side as the anti-wear block. The anti-wear block is in sliding fit with the anti-wear part; the anti-wear block and the anti-wear piece are respectively arranged on the control ring and the guide vane outer ring; according to the invention, the connection between the control ring and the guide vane outer ring can be more reliable, and the deflection of the control ring caused by the abrasion of the steel balls on the control ring and the guide vane outer ring groove can be effectively avoided.

A sealing arrangement, for a turbine with a static casing 221 and a runner 222 that rotates relative to the casing, comprises a plurality of parallel dead-end passages 228a, 228b formed within the run

The invention relates to the technical field of guide wheel blades, discloses a self-adaptive angle adjusting mechanism of a guide wheel blade, and solves the problems that an existing guide wheel blade cannot carry out angle self-adaptive adjustment in real time, the angle cannot be dynamically adjusted when the working conditions of flow, pressure and the like are changed, fluid matching unbalance is easily caused, efficiency is lowered, and energy is wasted. The device comprises a device shell, a water inlet is fixedly formed in one side of the circumferential surface of the device shell, a water outlet is fixedly formed in the top of the circumferential surface of the device shell, a protective cover is fixedly installed on one side of the device shell, a first sealing bearing is fixedly installed on the other side of the device shell, and a driving shaft is rotationally installed in the middle of the first sealing bearing; according to the guide wheel blade, the angle can be adjusted in a self-adaptive mode according to flow and pressure changes, the problems of efficiency reduction and energy waste caused by fluid matching unbalance are avoided, aggravated abrasion caused by overload or cavitation erosion can be avoided, the service life of equipment is prolonged, and the maintenance cost is reduced.

The utility model relates to the technical field of water turbine guide vanes, and discloses a water turbine guide vane mechanism which comprises a guide vane, a seat ring, a sleeve I and a top cover, the top cover is connected to the seat ring, and the guide vane is connected to the top cover through the sleeve I. The water turbine guide vane mechanism is characterized in that a detachable flange is arranged at the bottom of the sleeve I; the service life is further prolonged, and the replacement frequency and the maintenance cost are reduced.

The utility model provides a water turbine flow passage component wear-resistant and corrosion-resistant structure, which relates to the technical field of water turbines and comprises an outer shell, a partition plate is fixedly mounted in the outer shell, an inner cavity of the outer shell is divided into two independent spaces by the partition plate, and a plurality of penetrating openings distributed in a circumferential array are formed in the partition plate. A plurality of plugging mechanisms distributed in a circumferential array are arranged in the outer shell, and the plugging mechanisms can move into the penetrating opening and plug the penetrating opening. The upper end of one side of the outer shell communicates with and is fixedly provided with a liquid inlet pipe, the lower end of the other side of the outer shell communicates with and is fixedly provided with a liquid discharging pipe, a rotating part is arranged in the outer shell, a first connecting shaft is fixedly installed at the upper end of the rotating part, the upper end of the first connecting shaft penetrates through the outer shell, and the first connecting shaft is rotatably installed on the outer shell. A plurality of blades distributed in a circumferential array mode are arranged in the outer shell, the ends of the blades are all fixedly connected to the rotating piece, and the corners of the blades are subjected to round corner treatment.

The invention relates to the technical field of hydroelectric generating sets, and discloses an electric speed regulation system and a speed regulation control method for a water wheel power generation and pumped storage unit. The electric speed regulation system comprises a power supply mechanism, a driving mechanism, a transmission mechanism, a stroke detection mechanism and a control mechanism. The transmission mechanism comprises a rotary motion body, a limiting body and a linear motion body, the driving mechanism is connected with one end of the rotary motion body, the linear motion body is slidably arranged in the limiting body, one end of the linear motion body is connected with the rotary motion body, the other end of the linear motion body is connected with a water turbine movable guide vane control ring, and the limiting body is used for limiting rotary motion of the linear motion body. The linear motion body linearly moves in the limiting body; the stroke detection mechanism is suitable for detecting the stroke of the linear motion body; the control mechanism is connected with the power supply mechanism, the driving mechanism and the stroke detection mechanism. The electric speed regulation system is driven by electric power, the unit can be controlled more quickly and more accurately, and the electric speed regulation system is simple in structure, few in fault point and low in maintenance cost.

The application provides a flow control method based on three-curved-surface fish scale bionic structure, comprising the following steps: S1, constructing a main structure of an impeller blade, including a suction surface e and a pressure surface f, and fish scale areas g with multiple fish scale bionic structure coupling elements arranged regularly are arranged on the suction surface e and the pressure surface f; S2, constructing and designing a single fish scale bionic structure coupling element, including a bottom surface adhering to a blade surface, a top surface in a fish scale structure, and a rear side cylindrical surface; the top surface comprises two groups of parallel fold surfaces, and each group of fold surfaces is composed of three quadrilateral surfaces; a space rectangular coordinate system is established with a front end point of the bottom surface as an origin, and the fish scale bionic structure coupling element is constructed in the space rectangular coordinate system; and S3, establishing multiple fish scale bionic structure arrangement rules. The application can improve the fluid flow characteristics of the blade surface and reduce noise generation based on the control of flow by bionic structure.

The invention relates to the technical field of flood discharge gates, and discloses a control flood discharge gate of a water conservancy project and a using method thereof.The control flood discharge gate comprises a bottom plate, two side piers fixedly installed on the bottom plate and a flood discharge slope fixedly connected with one end of the bottom plate, a main gate is slidably installed between the two side piers, and a lifting frame is fixedly installed at the upper ends of the two side piers; a steel wire rope is fixedly connected between the output end of the winch and the upper end of the main gate. Water flow drives paddles to move, a rotating shaft drives a rotating disc to rotate, a sliding rod slides towards the edge of the rotating disc along a centrifugal groove under the action of centrifugal force when rotating along with the rotating disc, an arc-shaped plate is continuously limited by the sliding rod to drive a sliding block to move upwards, and at the moment, a pressure sensing plate senses pressure and controls an air cylinder to extend to a corresponding gear; the wedge-shaped block drives the water guide plate to rotate, the end of the water guide plate rotates upwards, the flood interception angle is reduced, and the situation that the load of the water turbine is increased due to excessive water flow in the flood flow channel is prevented.

The utility model belongs to the technical field of hydroelectric power generation equipment, and particularly relates to a hydroelectric power generation water wheel decontamination device which comprises a water wheel body and a cleaning assembly. The cleaning assembly is arranged on the water turbine body; the cleaning assembly comprises a lifting rod mounted on the water turbine body, a mounting frame fixed to the driving end of the lifting rod, a cleaning mechanism arranged on the mounting frame, a baffle detachably inserted into the cleaning mechanism and located on the water turbine body, and an adjusting mechanism arranged on the cleaning mechanism. Through the cleaning assembly, the lifting rod can be used for driving the mounting frame to ascend and descend, so that when the water wheels in the water turbine body are cleaned, the cleaning brush is moved downwards to the position between the water wheels, then the motor drives the cleaning brush to clean the two faces of the slowly-adjusted impeller, the cleaning brush can be lifted up after one-time cleaning is completed, and the operation is repeated; according to the scheme, manual cleaning is not needed, the cleaning effect is good, and application and popularization are convenient.

To provide a reversible pump-turbine used for the storage of electrical energy. [Solution] The present invention establishes the required plant cavitation coefficient by locating a reversible pump-turbine with a motor-generator in a nearly vertical borehole, generally well below the tailwater level. The present invention is a reversible pump-turbine installation location in a vertical shaft as an alternative to conventional underground power plants or deep concrete power plants. The required plant cavitation coefficient can be achieved simply by drilling a vertical shaft to the required depth, rather than routing water flow to and from a deeply buried power plant. A pneumatically controlled pressure relief valve can be incorporated into the present invention.

The disclosure relates to a hydropower equipment with graded utilization of kinetic energy of flowing water, including three steps on the inclined surface of the triangular base from top to bottom, wherein support rods are provided on the vertical surface of each step, runner one, runner two and runner three arranged in sequence from high to low are respectively and rotatably supported on the corresponding support rods through the shaft, all the three shafts are horizontally arranged and connected to the corresponding shaft of the generator; horizontal flow channels are set inside the lower part of the triangular base for guiding water to flow toward downstream direction, and the outlets of the horizontal flow channels directly face runner three.