209 results about "Hydro power" patented technology

The invention discloses a machine learning correction forecasting method for wind and light elements of a new energy power station in a complex terrain, which relates to the technical field of data processing and comprises the following steps: acquiring a multi-source observation data set of a target area, and performing numerical forecasting assimilation on the multi-source observation data set of the target area; obtaining an output data set of the water-wind-light power station in the target area, and determining a forecasting factor through a statistical method based on the multi-source observation data set and the output data set assimilated by numerical forecasting; establishing and training a joint prediction model according to the prediction factors; and obtaining weather forecast data of the target area in the to-be-predicted time period, and predicting the hydroelectric power generation power, the wind power generation power and the photovoltaic power generation power of the water-wind-light power station in the target area in the to-be-predicted time period through the joint prediction model based on the weather forecast data of the target area in the to-be-predicted time period. According to the method, the initial field is improved through data assimilation, so that the numerical forecasting effect is improved.

A coordinated optimization method for VSC-HVDC Frequency Synchronization Control and primary frequency regulation of hydropower includes: obtaining optimal PI parameters of the VSC-HVDC Frequency Synchronization controller from a first layer output of a dual-layer optimization model for coordinated parameters of VSC-HVDC Frequency Synchronization and primary frequency regulation; and obtaining a target PID control parameters from a second layer output of the dual-layer optimization model. The coordinated optimization method further includes adjusting the optimal PI parameters of the synchronization controller based on the target selection range and updating the PID control parameters of the primary frequency regulation system of hydropower based on the target PID control parameters. This approach aims to address the challenge of balancing the frequency response speed between the VSC-HVDC synchronization system and the primary frequency regulation system of hydropower.

The invention discloses an impact type rotating wheel hollow water bucket structure and a manufacturing method thereof, and relates to the technical field of hydroelectric power generation, in particular to the manufacturing method of the impact type rotating wheel hollow water bucket structure, which comprises the following steps: S1, preparing an impact type rotating wheel hub and a water bucket root solid area through forging, milling, polishing and other process means; s2, calculating a water bucket hollow part model through the working stress of the rotating wheel; and S3, the prepared rotating wheel hub is clamped to a positioner, and according to the model calculated in the above steps, the additive manufacturing of the rotating wheel hollow water bucket is achieved by continuously and cooperatively adjusting the spatial position of the rotating wheel and the posture of a welding gun. The invention has the advantages of reducing the weight, improving the stability, reducing the inertia, prolonging the service life, saving the cost, promoting the sustainable development, optimizing the structural design, improving the performance, improving the efficiency, reducing the energy consumption, being convenient to manufacture and maintain and enhancing the adaptability.

The invention 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.

A power generation system may include an impoundment structure at least partially defined by a plurality of precast segments. At least one of the precast segments may include a precast form and at least one precast infill block. The power generation system may include a powerhouse. At the powerhouse, a fluid conduit is coupled to an intake tube and a draft tube in respective transition regions to enable fluid to flow into a power generating module to produce electrical power, and transition collar(s) may be employed to secure connectivity between the fluid conduit and the intake tube and the draft tube. The power generating module may be arranged such that an intake port is elevated with respect to a draft port at the power generating module. Sensors may be employed to monitor integrity of elements of the power generation system.

A process and apparatus for producing biofuel from biorenewable feedstock is disclosed. The process comprises hydrotreating the biorenewable feed stream in a hydrotreating reactor to hydrodeoxygenate a biorenewable feed stream to provide a hydrotreated effluent stream. The hydrotreated effluent stream is separated in a hot separator into a hot separated vapor stream and a hot separated liquid stream. A hydroisomerization feed stream is taken from the hot separated liquid stream and hydroisomerized in a hydroisomerization reactor to provide a hydroisomerized stream. All or a portion of a return stream taken from the hot separated vapor stream is recycled to the hydroisomerization reactor. The disclosed process and apparatus minimize the carryover of the normal C16 to the biofuel and maximizes the hydroisomerization of n-paraffin hydrocarbons in the hydrotreated effluent stream to produce a biofuel which meets the biofuel specification without affecting or compromising the biofuel yield.

A process and apparatus for producing biofuel from biorenewable feedstock is disclosed. The process comprises hydrotreating the biorenewable feed stream in a hydrotreating reactor to hydrodeoxygenate a biorenewable feed stream to provide a hydrotreated effluent stream. The hydrotreated effluent stream is separated in a hot separator into a hot separated vapor stream and a hot separated liquid stream. A hydroisomerization feed stream is taken from the hot separated liquid stream and hydroisomerized in a hydroisomerization reactor to provide a hydroisomerized stream. All or a portion of a return stream taken from the hot separated vapor stream is recycled to the hydroisomerization reactor. The disclosed process and apparatus minimize the carryover of the normal C16 to the biofuel and maximizes the hydroisomerization of n-paraffin hydrocarbons in the hydrotreated effluent stream to produce a biofuel which meets the biofuel specification without affecting or compromising the biofuel yield.

A hydro power generation system may include a powerhouse and an entrance region structure. The powerhouse may include an intake port, a draft port, and a power generator disposed therebetween, the power generator configured to generate electrical power. The entrance region structure may be coupled to the powerhouse and define a portion of a boundary of an entrance region and the natural run-of-the-river portion of a waterway. The entrance region may be distinct from the natural run-of-the-river portion of the waterway and fluidically adjacent to the intake port.

The invention relates to the technical field of hydroelectric power generation equipment structure reliability evaluation, and particularly provides a water turbine top cover bolt time-varying reliability evaluation method and device based on parameter sensitivity analysis. According to the technical scheme provided by the invention, key variables are highlighted through parameter sensitivity analysis, and the response surface method and Monte Carlo simulation are combined, so that the calculation efficiency is remarkably improved while the precision is ensured, and the reliability evolution rule of the bolt in the whole life cycle can be scientifically represented; and an important basis is provided for maintenance decision and structure optimization of the water turbine top cover bolt.

A power generation system may include an impoundment structure at least partially defined by a plurality of precast segments. At least one of the precast segments may include a precast form and at least one precast infill block.

A modular pumped storage hydropower system may include a shaft having a first end located opposite a second end. A reservoir is connected to the first end of the shaft. The second end of the shaft is configured to be located under a surface of ground. The second end of the shaft has a first compartment and a second compartment. The first compartment retains a pump assembly having an inlet in hydro communication with the second compartment. The second compartment is configured to retain water. A pipe has a first end connected to the pump assembly located opposite a second end extending through a cover of the first end of the shaft. The second end of the pipe is in hydro communication with the reservoir. The pipe of the pump assembly transfers water from the second compartment of the second end of the shaft to the reservoir.

To provide a float-type hydraulic power generation device that can be easily transported to and installed at a desired location suitable for small hydraulic power generation, can be operated without interruption by dusts flowing in a water passage, and does not require external motive force.SOLUTION: A float-type hydraulic power generation device includes: a hydraulic turbine-type dust removal unit 2 which removes dust from water flowing in an open-channel water passage 6 such as a middle or small river and an agricultural water channel; a hydraulic power generation unit 3; and a float 4. The hydraulic turbine-type dust removal unit 2 and the hydraulic power generation unit 3 are integrally assembled into a unit assembly 5, with the former on an upstream side of the water passage 6 and the latter on a downstream side of the water passage 6. A duct 24, inside of which a hydraulic turbine of the hydraulic power generation unit 3 is disposed, is coupled and connected to a flow outlet which is provided in the hydraulic turbine-type dust removal unit 2 and through which clean water from which dust has been removed flows. The clean water flows through the flow outlet into the duct 24 to rotate the hydraulic turbine. The float 4 is coupled to the unit assembly 5 to hold the float in the flow passage 6 in a floating manner.SELECTED DRAWING: Figure 1

Processes and apparatuses for hydrotreating a feed stream comprising a biorenewable feedstock. The process comprises hydrotreating the feed stream in the presence of hydrogen and a hydrotreating catalyst to provide a hydrotreated stream and isomerizing an isomerization feed stream in the presence of a hydrotreating catalyst to provide an isomerized stream. The isomerization feed stream includes at least a portion of the hydrotreated stream. Electric heaters are provided for one or both recycle vapor streams.

A hydroelectric power generation and energy storage device based on water level variation, comprising: a floating unit, a submerged component, and a waterborne power generation component. The waterborne power generation component comprises a waterborne reservoir (1); the submerged component comprises a submerged pumping assembly, a submerged containment cylinder, and a submerged support frame structure (17), and the containment cylinder is provided with a first one-way valve (19050) and a second one-way valve (19060). When the tide rises and the water level increases, the floating unit ascends, so that the submerged pumping assembly is driven to move upwards, the pressure in the submerged containment cylinder is reduced, and then seawater or river water is pumped into the submerged containment cylinder by means of the first one-way valve (19050). When the tide falls or the water level decreases, the floating unit descends, so that the submerged pumping assembly is driven to move downwards, and then seawater or river water in the submerged containment cylinder is pumped into the waterborne reservoir (1). According to the device, a waste ship is used, kinetic energy of water flow is converted into potential energy of water by means of water level variation, and then the potential energy is converted into electric energy, thereby achieving the objective of power generation or energy storage.

The invention discloses an infrared monitoring jet device and method for removing limnoperna fortunei in a pipeline, and belongs to the technical field of pipeline maintenance and cleaning. The breeding of the limnoperna fortunei on the inner wall of the water conveying pipeline causes high cost, low efficiency, environmental pollution and the like; by arranging the infrared monitoring system, the growth condition of limnoperna fortunei on the inner wall of the pipeline can be accurately monitored in real time, and data can be transmitted to the control system in time; the control system performs deep analysis on the received data, and immediately controls the clearing execution system to start the high-pressure water jet device once judging that the scale of the limnoperna fortunei reaches a preset threshold value, so that the limnoperna fortunei is strongly scoured, and efficient clearing is realized; meanwhile, a hydroelectric generation system is ingeniously utilized, water flow power in the pipeline is converted into electric energy, and continuous and stable electric power support is provided for the whole device; the pipeline limnoperna fortunei cleaning device achieves automatic and environment-friendly cleaning of the pipeline limnoperna fortunei, has the remarkable effects of being efficient, energy-saving, safe, reliable and the like, and can be widely applied to maintenance work of various water conveying pipelines.

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.

The utility model relates to the technical field of hydroelectric power generation equipment, in particular to a novel hydraulic turbine set which comprises a bottom ring, a base ring is fixedly welded to the outer side surface of the bottom ring, fixed guide vanes are welded to the top face of the base ring, a top seat ring is arranged above the base ring, and the tops of the fixed guide vanes are fixedly welded to the bottom face of the top seat ring. A foundation ring is fixedly welded to the bottom face of the bottom ring, a movable guide vane bearing hole is formed in the top face of the bottom ring, a limiting cavity is formed in the inner side surface of the bottom ring, and balls are arranged in the limiting cavity. According to the novel hydraulic turbine set, the bearing structure is arranged in the bottom ring, and the bearing in the bottom ring is connected with the rotating wheel through connecting structures such as the connecting channel steel and the inserting groove, so that the vortex rotating wheel of the hydraulic turbine can be in direct butt joint with the bottom ring, auxiliary rotation is achieved under the effect of the bearing, stress sharing of the rotating wheel is achieved, and the bottom ring does not only have the limiting effect any more; the rotating wheel can rotate more smoothly and stably, and the structural strength and the power generation stability are improved.

The invention discloses hydraulic engineering concrete conveying equipment based on hydroelectric power plant construction, and relates to the technical field of concrete transportation, the hydraulic engineering concrete conveying equipment comprises a body arranged in an inclined tubular shape, and the body is arranged in a coaxial double-barrel shape; the spiral conveying blade is coaxially and rotatably arranged in the body so as to convey the concrete from the low end to the high end; the anti-segregation units are arranged in the direction of the central axis of the body at equal intervals, and each anti-segregation unit comprises an elastic piece which is in an arc-shaped plate shape and is evenly distributed on the inner wall of the body in the circumferential direction. According to the invention, through the arrangement of the elastic piece and the grading gas circuit unit, a composite force field of axial propulsion and radial extrusion is formed through the spiral blade to forcibly mix and compact aggregate and cement paste again on concrete at a corresponding position, so that the influence on the quality of the concrete due to separation of the aggregate and cement is effectively avoided, and the transportation effect is improved.

The utility model relates to the technical field of bathroom products, in particular to a water temperature digital display device for a bathroom shower head, which comprises a hydroelectric generation component arranged on the shower head, a battery, a temperature sensor, a microcontroller and a digital display component, according to the hydroelectric generation assembly, a pressurizing plate is arranged in a water inlet pipe of a shower head, a rotating coil is rotatably arranged in the water inlet pipe through a rotating shaft, the pressurizing plate is provided with a plurality of jet flow holes, the jet flow holes convert kinetic energy of water flow into pressure energy to pressurize water, and the flow speed of the water flow is increased after the water flow penetrates through the jet flow holes; therefore, the rotating coil rapidly rotates to generate electricity under the impact effect of water flow, the generating voltage of the hydroelectric generation assembly is kept stable, even if the water pressure is small and unstable, the digital display component can normally display the water temperature, and the problems that an existing digital display bathroom shower head on the market is unstable in water pressure and inconvenient to use are solved. And the digital display screen does not display the water temperature or splash screen at low brightness.

A Pelton turbine comprising a rotor with a horizontal axis of rotation and a supply system with at least four nozzles which surround the rotor in a uniformly distributed manner in the circumferential direction, and wherein the supply system comprises a first arm (1) and a second arm (2), and wherein the first arm (1) is connected to at least two adjacent nozzles, and wherein the second arm (2) is connected to the remaining nozzles, and wherein each arm (1, 2) comprises a strand which partially wraps around the rotor, from which at least one first pipe branches off to a first nozzle, and wherein a further nozzle forms the end of the strand, and wherein each arm (1, 2) comprises a bend (1.1, 2.1) and a connecting pipe section (1.2, 2.2), and wherein the axes of the connecting pipe sections (1.2, 2.2) are aligned parallel to the axis of rotation of the rotor, and wherein each connecting pipe section (1.2, 2.2) is connected to the turbine via the associated bend (1.1, 2.1) is connected to the corresponding strand.

Retrofitting a hydroelectric power plant (4) with a waterway (2), an electric machine (6), an impeller (5) arranged in the waterway (2) and a cylinder gate, wherein the impeller (5) has an axis of rotation by which an axial (z) and a radial (r) direction are defined, and wherein the cylinder gate comprises a ring (1) and a gate chamber (3) with a housing, and wherein the ring (1) can be moved in an axial direction, and wherein the ring (1) has a projection which is designed to modify a secondary flow in such a way as to suppress unstable states of the cylinder gate at opening degrees below 30%.

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.

The present invention relates to the technical field of hydroelectric power generation equipment, and discloses a turbine-type hydroelectric power generation equipment and a power generation method based on a pressurized water inlet pipe. In the present invention, after water flows through each liquid inlet channel and is guided by each guide vane, the arrangement of each liquid inlet channel of the vortex spiral flow channel ensures that the water flow can be evenly divided by the guidance of each guide vane, and output to the driving rotor at the same flow rate, thereby impacting and driving the driving rotor to rotate. The driving rotor rotates and simultaneously drives the generating rotor to rotate within the magnetic power generation mechanism to generate electricity. The input water flow is finally collected by the bottom drainage mechanism and then divided into several water flows for separate output. This can stably utilize the water flow energy input from each liquid inlet channel, ensure the stability of the generated power, and at the same time, avoid fluctuations in the generated power that affect the stability of the power grid.

The present invention discloses a method for detecting and verifying vulnerabilities in a hydropower generation system based on open source software, the method comprising: collecting open source projects related to the hydropower generation system, removing irrelevant content, extracting key functional modules and behavioral features; extracting code snippets of interest points related to API calls, memory operations, control logic, communication protocol parsing, and data flows based on static code analysis; performing word segmentation, word embedding, and position embedding on the slices to generate synthetic embedding vectors to capture code semantics and position information; extracting vulnerability features through a self-attention mechanism and a feedforward neural network; supporting multi-classification and binary classification tasks, and further updating machine learning model parameters according to the detection results. The present invention targets key vulnerability areas of the hydropower generation system, integrates static code analysis, code slicing, and embedding vector generation technology, and implements vulnerability detection of the hydropower generation system open source software through a machine learning model of a self-attention mechanism.

The utility model provides a symmetrical steel branch pipe spiral flow state elimination composite guide plate device, a spiral flow state elimination composite guide plate unit comprises four spiral flow state elimination composite guide plate subunits, and each spiral flow state elimination composite guide plate subunit comprises a composite guide plate and a plurality of parallel guide plates; the composite flow guide plate and the parallel flow guide plates are sequentially arranged in the direction from near to far away from the datum line; and moreover, the front ends of the composite flow guide plate and each parallel flow guide plate and the tail end of the crescent rib plate are kept on the same horizontal line vertical to the datum line. According to the device, the vortex eliminating effect of the guide plate in the pipe is utilized to cut the pressurized water flow in the incoming flow direction so as to eliminate vortexes in the pressurized water flow, so that the vortexes in the pressurized hydraulic pipeline are effectively eliminated or weakened on the basis of not changing the external structure of the branch pipe and not influencing the efficiency, and finally small head loss is contributed to the whole hydroelectric generation system; and the efficiency and the operation safety of the hydroelectric generation system are improved.

A hydro power generation system may include a powerhouse and an entrance region structure. The powerhouse may include an intake port, a draft port, and a power generator disposed therebetween, the power generator configured to generate electrical power. The entrance region structure may be coupled to the powerhouse and define a portion of a boundary of an entrance region and the natural run-of-the-river portion of a waterway. The entrance region may be distinct from the natural run-of-the-river portion of the waterway and fluidically adjacent to the intake port.

The invention belongs to the technical field of hydroelectric power stations, and discloses a submersible hydroelectric power station with a reservoir tail desilting function, which comprises a dam body arranged at the river reach of the reservoir tail of a built reservoir, a liftable gate, a drain hole, a power generation assembly and a desilting structure, the dam body encloses the reservoir tail area of the built reservoir to form a first reservoir, the dam body encloses the secondary area to form a second reservoir, and the drainage hole is formed in a water outlet of the dam body; at least more than 25% of surplus water energy of the built reservoir can be reused through the arranged dam body, full load in the dry season and adjustable stable power generation in the wet season are achieved, the problem of waste of fall water energy in the full-dry season of the original reservoir is solved, the bottom of the submersible power plant is communicated with the second reservoir, and the water head can be directly used for driving the unit. The liftable gate accurately controls the water level difference, it is ensured that power can be generated in the full and dry periods, and the limitation that traditional secondary power generation is only available in the dry period is avoided. And the desilting problem is fundamentally solved, and the environment is protected.

The present invention discloses a sodium-magnesium hybrid battery with a P2-phase layered oxide cathode material, which includes a positive electrode sheet, a negative electrode sheet and a Na / Mg double-salt electrolyte. The positive electrode sheet includes a P2-phase layered oxide cathode material, and the negative electrode sheet is pure magnesium or a magnesium alloy. The present invention also provides a preparation method and an application of the sodium-magnesium hybrid battery with the P2-phase layered oxide cathode material. The present invention fundamentally avoids the consumption of raw sodium, and the relatively high specific capacity of metallic magnesium can additionally compensate for Mg<supgt;2+< / supgt;, enabling the battery to have a relatively high energy density; dendrites will not be generated on the surface of the metallic magnesium negative electrode, improving the intrinsic safety of the battery; while giving play to the inherent advantages of magnesium batteries, it also takes into account the advantage of the high ion transfer rate of the P2-phase layered oxide cathode material, having a relatively high first-cycle charge-discharge specific capacity and cycle stability; it can be used for energy storage devices in hydropower generation, wind power generation, backup power supplies or communication base stations, as well as power batteries for electric bicycles and low-speed electric vehicles.

The invention relates to the technical field of hydroelectric power generation hub safety monitoring, and discloses a truss type plane steel gate health monitoring system based on a multi-dimensional coupling sensing network, the system is constructed with nine modules, and the structure response data of a truss type plane steel gate are collected in real time through a sensor monitoring module; a high-reliability communication link is constructed in a data transmission module, noise suppression and feature enhancement are completed in a data preprocessing module, a dynamic load reconstruction module inverts a water flow impact load based on a hydrodynamic theory, and a damage diagnosis module fuses multi-source sensing information to realize microdefect identification. An inclination angle-water pressure coupling model is established through a posture safety evaluation module to judge the operation risk level, when an early warning decision module recognizes abnormity, grading alarm is automatically triggered, starting and stopping equipment is controlled in a linkage mode, and all monitoring data is stored in a distributed database through a data management module to form a full-life-cycle file; and finally, a visual billboard and an interaction control function are provided for the PC terminal / mobile terminal through the user interface module.