184 results about "Wind energy conversion" patented technology

The invention belongs to the technical field of comprehensive utilization of ocean renewable energy sources, and particularly relates to a pilot frequency coupling-based wind wave energy multi-degree-of-freedom broadband control method, which comprises the following steps of: performing frequency domain identification on wind wave environment characteristics, and constructing a wind wave pilot frequency energy coupling model; based on the motion response characteristics of the multi-degree-of-freedom floating platform, designing a pilot frequency energy regulation and conversion mechanism; a full-working-condition dynamic optimization control strategy is adopted, and cooperative operation and energy flow self-adaptive distribution of the wind energy conversion unit and the wave energy conversion unit are achieved. Aiming at the significant difference and relevance of wind energy and wave energy in frequency characteristics, time scale and spatial distribution, a pilot frequency wind wave coupling dynamic model is established, and broadband capture of low-frequency wind-induced and high-frequency wave-induced coupling energy is realized under complex sea conditions through multi-degree-of-freedom motion decoupling and state observation, so that the wind-induced and high-frequency wave-induced coupling energy is obtained. The energy utilization rate, the attitude stability and the structural safety of the system are effectively improved, and good robustness and engineering adaptability are achieved.

The invention provides a wind-solar complementary zero-carbon seawater desalination device. The device comprises a solar module, a wind turbine generator, an energy storage electric box, a heat storage water tank, a refrigerating circuit and a seawater desalination tank, the solar assembly is used for providing heat energy for the heat storage water tank. The solar assembly and the wind turbine generator set are used for providing electric energy for the energy storage electric box. The refrigerating circuit is used for freezing seawater in the seawater desalination box by utilizing electric energy in the energy storage electric box; the heat storage water tank is connected with the seawater desalination tank through a heat supply pipeline, and the heat supply pipeline conveys heat energy in the heat storage water tank to the seawater desalination tank to melt frozen seawater in the seawater desalination tank; cold energy and heat energy are obtained by converting solar energy and wind energy, and the long-term cost advantage is achieved; and heat energy in the energy storage water tank and cold energy in the refrigerating circuit can be quickly started and stably run, so that the operation flexibility is improved.

The invention provides a horizontal-shaft multi-barrel type wind power generation device and a using method thereof.The horizontal-shaft multi-barrel type wind power generation device comprises at least one rotating shaft and a plurality of hollow barrels which are sequentially arranged in the axial direction of the rotating shaft, and a plurality of inclined ventilation holes are formed in the surface of each barrel; positive and negative pressure difference generated by the ventilation holes drives the barrel bodies to rotate around the rotating shaft, the multiple barrel bodies are arranged at intervals to achieve cascade driving of wind energy, the rotating shaft is connected with a power generator, and the power output of the power generator is adjusted through a microprocessor control system. Through the hollow barrels sequentially arranged along the rotating shaft and the vent holes obliquely formed in the barrels, the barrels are driven to rotate through the wind pressure difference, and wind energy is effectively captured. Adjacent barrel bodies are arranged at proper intervals, airflow interference is avoided, and the wind energy conversion efficiency is improved. The rotating shaft is directly connected with the permanent magnet synchronous generator, efficient mechanical energy-to-electric energy conversion is achieved, and the system stability is high.

The invention discloses an arid and semi-arid region well and canal double-irrigation rotation irrigation wind-solar complementary intelligent water-saving salt-control irrigation device and method. The device comprises a sensor monitoring module used for acquiring environment data and water level information of well water and canal water in real time; the energy supply module comprises a solar assembly and a wind power generation assembly, the solar assembly is used for converting solar energy into electric energy, the wind power generation assembly is used for converting wind energy into electric energy, and the energy supply control module is connected with the sensor monitoring module and the energy supply module. The calculation module is used for calculating irrigation water quantity according to the environment data and the water level information; and the irrigation module is connected with the control module and is used for controlling the output water quantity according to the calculated irrigation water quantity. Water resource shortage in arid and semi-arid areas can be relieved, and water resource waste in the irrigation process is avoided.

The invention relates to the technical field of wind power generation, in particular to a wind power generation prediction method and system based on digital twin energizing and computer equipment. Comprising the following steps: establishing a blade stress-strain physical model, and quantifying a blade load and fatigue damage by combining aerodynamics and a thin plate bending theory; integrating weather, equipment parameters and operation data, and building a digital twinborn platform of a multi-task learning framework; executing the main task and the auxiliary task in parallel; theoretical generating capacity is calculated through a wind energy conversion equation, and a predicted value is corrected by fusing RNN; and selecting an optimal predicted value based on a confidence interval, and dynamically adjusting a yaw angle and a pitch angle in combination with an extreme weather risk level to form closed-loop control. According to the scheme, the power generation prediction error is reduced by 18%, the service life of the blade is prolonged by 28%, extreme weather early warning is brought forward by 72 hours, and the power generation efficiency and the equipment safety are remarkably improved.

The invention belongs to the technical field of wind power generation, and particularly discloses a wind energy directional rectifier which comprises a body and at least one airflow channel, the body is provided with at least one airflow channel in the extending direction of the central axis, and the body and the airflow channels are each of a streamline gradual change structure and have the same gradual change direction. Comprising a device for converting the wind energy rectified by the wind energy directional rectifier into mechanical kinetic energy to drive a generator to generate electricity. Wind energy in different directions is collected through the wind energy directional rectifier and then converged together to become high-speed jet flow consistent in direction and stable in flow speed, then the high-speed jet flow is converted into mechanical kinetic energy through the power conversion structure, finally the generator is driven to generate electricity, the wind energy utilization efficiency of the wind power conversion device is effectively improved, and the wind energy utilization efficiency is improved. The power generation efficiency of the wind-power conversion device is improved.

The invention discloses a self-cooling rotary brake based on magnetorheological solid-liquid phase change, and belongs to the field of magnetorheological fluid braking. The working temperature of the magnetorheological fluid brake is crucial to the braking performance of the magnetorheological fluid brake. The brake is mainly composed of a wind generating set and a magnetorheological fluid brake with a self-function heat dissipation function, in service, a fan turbine (1) drives a rotating shaft (9), a rotor (10), a brake disc (6) and fan blades (15) to rotate under the action of wind power, the rotor and a stator (3) convert wind energy into electric energy, the brake disc immersed in magnetorheological fluid (14) restrains the rotating speed of the rotating shaft, and the fan blades (15) are driven to rotate. And meanwhile, the fan blades at the bottom continuously discharge air from the ventilation holes (11) to the bottom of the brake along the outer surface of the magnetorheological fluid disc shell (13). According to the structure, the working characteristics of the rotary brake are utilized, the draft fan blades are designed at the bottom of the rotating shaft, air flow of the disc containing cylinder containing the magnetorheological fluid is accelerated, and the magnetorheological fluid can be kept at the low temperature without an additional radiator.

The invention discloses a wind turbine blade aerodynamic characteristic optimization and power generation efficiency improvement system, and relates to the technical field of wind turbine operation optimization. A wind speed analysis module establishes wind energy distribution models of different wind speed grades according to historical wind regime data and real-time wind speed changes, analyzes whether wind speed sudden change exists or not based on the wind energy distribution models, and sends the analyzed wind speed sudden change to a power generation module; the load analysis module introduces a power grid end load demand to form a load change model, whether load fluctuation exists or not is analyzed based on the load change model, and the collaborative optimization module takes wind speed abrupt change and the load fluctuation as input variables and collaboratively optimizes a real-time adjustment strategy of a paddle through an adaptive control algorithm. According to the lifting system, a wind speed and load double sensing mechanism is constructed, an intelligent optimization algorithm and a pneumatic real-time monitoring network are introduced, the self-adaptive capacity of a fan in a variable environment is remarkably improved, the real-time performance and the fineness of paddle control are enhanced, and the control efficiency is improved. And the wind energy conversion efficiency, the power generation output stability, the structural safety and the operation intelligence level are obviously improved.

The utility model relates to a wind power generation system for marine ship navigation, which comprises a vertical fan, a constant-pressure oil pump, an oil storage tank, a hydraulic distributor, a hydraulic motor, a generator and a hydraulic accumulator, a blade shaft of the vertical fan is provided with a rotating speed sensor and connected with the constant-pressure oil pump, and the rotating speed sensor is connected with the generator. The constant-pressure oil pump is connected with an oil storage tank, the oil storage tank is provided with a hydraulic distributor, the hydraulic distributor is connected with a plurality of generator sets, and electric energy generated by each generator set is merged into the ship micro-grid combined cabinet. According to the utility model, liquid energy with rated pressure is respectively output to each generator set through the liquid energy distributor, 380V and 220V alternating current and 48V direct current can be obtained, each path of liquid energy has rated liquid energy for the generator set with hydraulic power to stably generate electricity, the generated electric energy is combined and input into a ship-ship micro-grid, the wind energy is comprehensively absorbed, and the conversion rate of the wind energy reaches more than 60%.

The invention discloses a circuit board optimization method applied to wind energy conversion, and the method comprises the steps: integrating a dynamic load matching module on a circuit board, collecting the voltage, current and frequency signals outputted by a wind turbine generator in real time, calculating the current wind energy conversion efficiency through an embedded controller, and combining with a preset maximum power point tracking algorithm, dynamically adjusting the switching frequency of the power semiconductor device; a layered heat dissipation structure is adopted, a circuit board base material is made of a high-thermal-conductivity composite ceramic material, a micro-channel cooling system is embedded in the circuit board base material, and the circuit board base material is connected with external heat dissipation fins through heat pipes; a thermoelectric refrigeration sheet is arranged below the power device, and the refrigeration power is dynamically adjusted according to the feedback of a temperature sensor, so that the temperature of a key device is maintained in a safe range of 50-80 DEG C; through a multi-objective optimization algorithm, the circuit loss, the heat dissipation efficiency and the electromagnetic compatibility are balanced, the circuit layout and the wiring path are optimized, and the influence of parasitic inductance and capacitance on the high-frequency switch is reduced.

The invention relates to the field of energy management, and discloses a photovoltaic and breeze power generation combined bus station energy management system, which comprises an energy collection module, and the energy collection module collects light energy and wind energy so as to supply power to bus station equipment and realize an effect of green power generation. The energy acquisition module is connected with an energy conversion and storage module, the energy conversion and storage module converts light energy or wind energy acquired by the energy acquisition module into electric energy and stores the electric energy, and the energy acquisition module is connected with a central control module. By means of the central control module, the energy algorithm module and the energy collection scheme selection module, the advantages of photovoltaic power generation and breeze power generation are balanced and the power is pre-estimated by depending on a related accurate calculation formula, and then a plurality of sets of collection schemes are combined, so that weather changes are flexibly dealt with, common defects of light energy and wind power generation are overcome, and the power generation efficiency is improved.

The invention relates to the technical field of wind power prediction, and discloses a wind power prediction system fusing a physical model and machine learning, which comprises a multi-dimensional acquisition module and an intelligent prediction module. According to the wind power prediction system fusing the physical model and the machine learning, forecast data, sensing data and fan management data of all meteorological factors are acquired through a multi-dimensional acquisition module and are classified to form a data set, an intelligent prediction module analyzes a linear feature relationship among the meteorological factors, predicted atmospheric pressure, predicted air density and predicted power are generated, and the wind power prediction efficiency is improved. The intelligent prediction module establishes constraint conditions for a subsequent prediction model, monitors a nonlinear characteristic relation between a meteorological factor prediction value and a real-time numerical value, generates a monitoring data set and a random forest model, dynamically corrects model parameters, and is high in wind energy prediction accuracy according to the monitoring data set. The influence of each meteorological factor on the wind energy conversion efficiency is analyzed, a corresponding evaluation report is output, and the dynamic monitoring optimization capability is high.

The application discloses a constant power control method and device of a wind energy conversion system based on non-Gaussian data and a medium, establishes a performance index based on second-order information potential, and obtains optimal control input by optimizing the established performance index through a Newton method, so that the output speed and output power of the wind energy conversion system under non-Gaussian wind speed interference can track the set value, constant power control of the wind energy conversion system is realized, the fluctuation of the output power is reduced, and the service life of the wind turbine is prolonged. The application performs controller design under the condition that the interference is a non-Gaussian random variable, compared with the existing method in which noise is ignored or noise is assumed to be subject to Gaussian distribution, the application is more general and practical. Moreover, the application considers the mutual relationship between two closed loop circuits in a multivariable system, adds joint information potential in the performance index, allows variable speed during a transient period, and can obtain higher control performance.

The utility model relates to the technical field of wind driven generators, in particular to a horizontal shaft lift-drag combined type wind driven generator which comprises a support, a rotating shaft, a lift force blade structure, a rose fan blade structure and a ratchet wheel structure, the rotating shaft is horizontally arranged on the support, the two ends of the rotating shaft are rotationally connected with the support, and the lift force blade structure is fixed to the rotating shaft. The rotating shaft is sleeved with the rose fan blade structure, the rotating shaft, the lifting force blade structure and the rose fan blade structure share the same center shaft, the rose fan blade structure is connected with the rotating shaft through the ratchet wheel structure, the downwind rotation directions of the lifting force blade structure and the rose fan blade structure are the same, and the rose fan blade structure is a resistance type blade and is large in output torque. During starting, the ratchet wheel structure can drive the rotating shaft and the lifting force blade structure to get rid of the static state more quickly, low-wind-speed quick starting can be achieved, and the lifting force blade structure of the horizontal shaft has higher wind energy conversion efficiency.

The present invention relates to the technical field of wind power generation, and discloses a wind energy conversion device for wind power generation, including an air induction component, the bottom of the air induction component is provided with a support mechanism fixedly connected to the roof of a car, the support mechanism is connected to a locking component connected to the air induction component, and the front end of the air induction component is connected to a closing component. The present invention adopts a modular design, which is convenient for installation on the roof of the car, and is installed by first docking and then sealing, which is convenient for docking installation and can be sealed from the top of the roof, improve the waterproof effect, and facilitate the installation operation of the installation operator; it can use the car to generate wind power when braking or decelerating, improve the deceleration effect of the car, collect the wind energy generated during the driving of the car to generate electricity, improve the cruising range of the car, and save energy.

The invention relates to the field of electric power, in particular to a wind power generation system. Comprising a rotating base and a wind power driving component installed on the rotating base, a middle base is connected to the rotating base in a matched mode, two fixing pieces are symmetrically and rotationally connected to the middle base, motors I are fixedly connected to the two ends of the middle base, rotating shafts are connected to output shafts of the two motors I through couplings, and the two rotating shafts are fixedly connected with the two fixing pieces respectively. The rotating seat is rotationally connected to the middle seat, a gear ring is fixedly connected to the rotating seat, a gear is fixedly connected to the middle seat, a motor III is fixedly connected to an output shaft of the gear, and the motor III is in meshing transmission connection with the gear ring. The wind power generation device has the beneficial effects that windward stress can be carried out at different height positions to realize conversion and utilization of wind energy.

The application relates to the field of ship energy centralized management technology, in particular to a comprehensive ship electric energy management system based on the Internet of Things, which comprises a front-end power generation module, an electric power algorithm module, a control management module, a front-end monitoring module and a man-machine interaction module; the front-end power generation module converts wind energy into electric energy, converts heat energy generated by diesel engine work into electric energy and converts mechanical energy output by the diesel engine into electric energy; the front-end power generation module is connected to a power grid and delivers electric power to the power grid; the electric power algorithm module monitors electric power output of a wind flow power generation unit, a low-temperature waste heat unit and a shaft power generation unit, collects and analyzes stored electric energy of the front-end power generation module; the front-end monitoring module is used for monitoring electric power generation; and the control management module adjusts electric power flowing into the power grid according to fitting and analysis results. The application has the effect of reducing additional energy consumption of the ship and maintaining overall electric energy efficiency of the ship in an optimal range.

The invention discloses a self-powered displacement-acceleration sensing system for a bridge based on hybrid energy collection. The hybrid energy collection device converts wind energy into electrical energy and then passes through a power management circuit to convert it into a DC voltage to power the remaining units. The hybrid energy collector includes a ball with a FEP surface, a coaxially sleeved and rotatable cone cylinder 1, cone cylinder 2 or spindle cylinder 1, spindle cylinder 2, and upper and lower blades with opposite torsional directions. The outer wall of the upper cylinder, the inner wall of the lower cylinder, and the upper and lower blades are all provided with multiple tracks to accommodate the ball, and the tracks of the upper and lower cylinders are connected end to end. The inner wall of the upper cylinder is attached with grid-shaped copper electrodes at intervals in the circumferential direction, and polyester fiber wool is arranged in the gap. The coil embedded in the bottom surface of the upper cylinder cooperates with the permanent magnet embedded in the bottom surface of the lower cylinder. The outer wall of the lower cylinder is evenly and staggeredly attached with multiple nylon films and PTFE films in the circumferential direction. The invention realizes the self-power supply of the sensing system and ensures the continuous and stable operation of the self-powered displacement-acceleration sensing system for the bridge.

The invention relates to the technical field of conveying equipment, in particular to a wind energy material conveyor and a forming machining technology, the wind energy material conveyor comprises a wind energy conversion mechanism, a transmission mechanism, a driving mechanism and a supporting table, and the wind energy conversion mechanism comprises an impeller, a driving rotating shaft, a supporting frame, a shell and a driving gear; the supporting frame supports the shell, the shell provides mounting and supporting conditions for the driving rotating shaft, airflow blows the impeller to rotate, the impeller rotates to drive the driving rotating shaft to rotate, the driving rotating shaft rotates, and due to the fact that the radius of the impeller is large and the radius of the driving gear is small, large rotating torque can be obtained on the tooth face of the driving gear, and therefore wind energy is converted into mechanical energy. According to the wind energy material conveyor, the mechanical energy is transmitted to the driving mechanism through the transmission mechanism, finally, the driving mechanism pushes the materials, the purpose of conveying the materials is achieved, low-carbon and environment-friendly effects are achieved, wind energy is converted into the mechanical energy, and energy loss is reduced.

The present invention discloses a composite energy recovery system for an industrial cooling tower, comprising a support plate, a wind power generation device, a solar power generation device, and a water collection device, wherein the support plate can be fixedly arranged at the tower mouth of the industrial cooling tower; the wind power generation device is used to convert wind energy into electrical energy, and includes a variable configuration power generation mechanism that can switch between a swing power generation mode and a rotation power generation mode; the solar power generation device is used to convert received light energy into electrical energy; and the water collection device is used to collect water vapor in the industrial cooling tower. The present invention is installed at the tower mouth, integrating wind power, photovoltaic power, and water utilization, and can recover the kinetic energy of the fluid in the tower, the solar energy at the tower mouth, and water vapor. In addition, the innovative variable configuration power generation mechanism is used to realize the interactive and coordinated operation of swing and rotation power generation, so that the device uses a swing power generation mode under low wind speed or turbulent conditions and a rotation power generation mode under medium wind speed conditions, so that the power generation system stably converts and outputs electrical energy.

The invention provides a wind power deviation correction method, and relates to the field of wind power deviation correction, and the method comprises the following steps: obtaining five-element microclimate operation data of a wind power plant, and constructing a five-element feature vector; a microclimate state vector is generated through a microclimate state encoder, and the fusion weight of the LSTM and the Self-Attention is dynamically calculated; respectively processing short-term, medium-term and long-term time sequence dependency relationships, and generating a global dependency feature vector; embedding a wind energy conversion physical law into a loss function, and constructing a physical constraint reinforcement learning framework; dynamically adjusting the weight of each microclimate factor to generate a weighted feature vector; and generating a final wind power deviation correction result through the decoder network. According to the method, through microclimate adaptive model fusion, multi-scale time sequence modeling, physical constraint enhancement and dynamic feature optimization, the accuracy of wind power deviation correction and the adaptability to different meteorological conditions are improved.

The invention provides a wind generating set control system and method, and the method comprises the steps: deducing short-term wind power information of a power generation environment and short-term power generation of a generator according to real-time information, determining the power demand of the generator according to the total power demand of a power grid, and adjusting the response speed of the generator to the short-term wind power information, the current wind energy conversion efficiency of the generator is determined according to the real-time rotating speed of the generator, the generated electric energy is synchronously transmitted to the power grid, the temporary electricity demand of the power grid is determined according to the transmission feedback information of the power grid, and the rotating speed of the generator is subjected to auxiliary adjustment, so that the wind power condition in a short period can be predicted; therefore, the generator is controlled to adjust the rotating speed in advance, voltage instability caused by wind speed fluctuation is avoided, power generation work of the generator is adjusted according to the electricity demand of the power grid, and the phenomenon of overload or low-efficiency operation is avoided.

The natural energy power generation assembly of Pan is in the field of new energy, which is composed of solar photovoltaic panel, centrifugal fan component, wind control component, wind receiving component and generator, the main idea is to obtain 1100W / hour of electric energy through solar panel, and convert 200W / hour to 400W / hour of electric energy into negative pressure energy acting on the wind control component through the centrifugal fan, and convert the negative pressure energy into wind energy with wind speed of 11m / s to 45 / s through the cooperation of "fire tornado" effect device and "Laval tube" in the wind control component, and convert the wind energy into kinetic energy of 300rpm to 500rpm through the wind receiving component to drive the generator to generate 1000W / hour to 2000W / hour of electric energy.

The invention discloses a zero-carbon highway energy complementation control cloud platform, and relates to the field of energy scheduling control, and the cloud platform comprises a solar photovoltaic unit which is used for converting sunlight into electric energy through a photoelectric conversion technology based on a solar photovoltaic panel; the wind power generation unit is used for converting wind energy into electric energy through a wind energy conversion technology by utilizing a wind generating set; the geothermal energy utilization unit is used for obtaining heat energy through a ground source heat pump according to shallow-layer and middle-deep-layer geothermal resources; the energy storage unit is used for storing excess electric energy and heat energy through the battery energy storage module and the heat energy storage module; and the intelligent energy management unit is used for establishing an energy complementary model based on the photovoltaic output characteristics and the wind power output characteristics, constructing a wind-solar-ground storage collaborative operation strategy, and realizing optimal configuration and scheduling of energy. Various renewable energy technologies such as solar energy, wind energy and geothermal energy can be integrated, and efficient conversion and utilization of energy are achieved.

The present application relates to high-altitude wind energy field, disclose a kind of hoist type umbrella type wind energy conversion method and power generation system.The first cable of the method is tied to the edge of the umbrella of working umbrella;Second cable is tied to the top of the umbrella of working umbrella.Power generation stage, high-altitude wind energy drives working umbrella to rise, first cable and second cable respectively pull first drum and second drum to rotate, and first drum or second drum drives generator to generate electricity;Close umbrella stage, working umbrella rises to first height, first cable stops rope than second cable, umbrella edge continues to rise and folds up to close;Recycling stage, motor drives first drum and second drum to rotate simultaneously, and first cable and second cable pull working umbrella to descend;Open umbrella stage, working umbrella descends to second height, first cable stops rope than second cable, umbrella edge continues to descend and folds down to open.The present application is used to solve the opening and closing problem of umbrella type wind energy conversion device, and achieves the effect of simple, efficient and reliable.

The invention discloses a novel offshore wind power generation system control method based on a disturbance observer, and relates to the technical field of permanent magnet synchronous wind power generator control. The method comprises the following steps: constructing a mathematical model of a wind turbine, and designing a maximum power tracking module; constructing a mathematical model of the permanent magnet synchronous generator; designing a disturbance torque observer, and introducing a low-pass filter to improve the observation precision; designing a sliding mode controller based on a double-exponential reaching law; and combining the output values of the sliding mode controller and the disturbance torque observer as a q-axis current instruction to control the rotating speed of the permanent magnet synchronous generator. According to the method, the maximum power point of the wind turbine is captured, the air disturbance torque is estimated and compensated, accurate and rapid tracking of the rotating speed of the rotor matched with the maximum power point of the wind turbine is achieved through the novel double-exponential sliding mode controller, and the wind energy conversion efficiency is improved. And the anti-interference capability of the wind power generation system is enhanced in a complex marine environment.

The utility model relates to wind driven generator technical field discloses a wind driven generator, its characterized in that, including fan main shaft, first blade layer, first blade layer includes a plurality of first blade, first blade is along the circumferential interval distribution of fan main shaft, second blade layer, second blade layer includes a plurality of second blade, second blade is along the circumferential interval distribution of fan main shaft, and second blade layer is set in the circumferential of fan main shaft relative to first blade layer staggered angle, the wind driven generator provided by the utility model, through setting first blade layer and second blade layer, and second blade layer is in the circumferential of fan main shaft relative to first blade layer staggered angle, can reduce the wind catching empty window period of fan rotation, improve the utilization of effective wind sweeping area, strengthen the overall wind catching capacity, simultaneously, the difference of angle of attack change that two layers of blades experience in the rotation process, can alleviate dynamic stall phenomenon, help to promote the wind energy conversion efficiency.

The utility model discloses a kind of reinforced axial flow fan blades, it is related to axial flow fan blade field, including mounting hub, the inner side of mounting hub is uniformly fixedly connected with installation component, another end of installation component is fixedly connected with mounting seat, the other side of mounting seat is uniformly fixedly connected with blade body, installation component includes the clamping frame being set in mounting hub inner side, the clamping frame penetrates mounting hub, the upper and lower sides of clamping frame are uniformly set with clamping hole, one side of mounting seat is fixedly connected with clamping block, clamping block and clamping frame are mutually inserted. The utility model uses above-mentioned structure, installation component is set in the inside of mounting hub, can reduce the eddy current and turbulence due to component obstruction, axial flow fan blade can more smoothly guide airflow, reduce energy loss, and then significantly improve wind energy conversion efficiency, ensure that axial flow fan blade always maintains efficient operating state during working process.

The invention discloses a bridge self-powered strain sensing system based on friction nano-power generation and electromagnetic power generation, wherein a wind energy conversion device converts wind energy into electric energy and then converts it into direct current through a power management circuit to power the remaining units; the wind energy conversion device comprises a ball with a surface of FEP, an upper cylinder and a lower cylinder which are coaxially sleeved and rotatable, an upper fan blade is fixedly connected to the outer wall of the upper cylinder, and the cylinder and the fan blade of the lower cylinder are fixedly connected through ribs, and the upper and lower fan blades are twisted in opposite directions; a plurality of inclined rails are provided on the outer wall of the upper cylinder, the inner wall of the lower cylinder, and the upper and lower fan blades to accommodate the ball; a grid-shaped copper electrode is attached to the inner wall of the upper cylinder at intervals in the circumferential direction, and polyester fiber wool is arranged at intervals in the gap; a plurality of coils are embedded in the circumferential direction of the upper cylinder, and a plurality of permanent magnets are embedded in the circumferential direction of the lower cylinder; a plurality of nylon films and PTFE films of the same number are attached to the outer wall of the lower cylinder at uniform and staggered intervals in the circumferential direction. The invention realizes the self-power supply of the strain sensing system, and ensures the continuous real-time monitoring of the strain of the bridge structure.

The environment-friendly wind energy magnetic resonance heating system comprises a support which is movably installed on a base, and a rotating rod is arranged in the support in a penetrating mode in the vertical direction; the fan blades are movably mounted on the outer side of the rotating rod above the bracket and are circumferentially distributed; the adjusting plate is movably mounted on the fan blades and used for adjusting the air volume of the fan blades and the rotating speed of the rotating rod; the magnetic heater is arranged at the bottom in the bracket and is movably connected with the bottom of the rotating rod through a driving rod; the motor is mounted in the bracket and is connected with the rotating rod; and the storage battery is mounted in the bracket and is used for storing electric quantity. According to the heating system, wind energy in natural resources can be converted into heat energy and electric energy to be transmitted outwards for use, traditional boiler heating can be replaced, and therefore environmental pollution caused by boiler heating is effectively avoided, the heating system can be conveniently disassembled and installed, small-scale use is facilitated, a user can conveniently install the heating system, and the heating system is convenient to use. The rotating speed of the fan blades can be conveniently adjusted according to external wind speed.