1073 results about "Air current" patented technology

The invention discloses a numerical simulation prediction method and system for typhoon binocular wall structure reconstruction judgment and maintenance duration after terrain interference and a medium, and relates to the technical field of typhoon fine structure evolution description and numerical simulation. According to the method, the binocular wall typhoon is identified through multi-source data fusion, a high-resolution numerical simulation system is constructed, and a typhoon structure is divided into four quadrants for differential diagnosis according to the wind shear direction based on vertical wind shear phase limit analysis. And the distribution characteristics of the rapid vortex silking area are captured by calculating vortex silking time parameters. And establishing a ditch sinking airflow detection mechanism, and quantitatively evaluating the contribution of radial advection, tangential advection, vertical advection and friction force items to tangential wind evolution by using tangential wind income and expenditure diagnostic analysis. And calculating an energy growth rate, and predicting a double-eye wall maintaining time length. According to the method, the outer eye wall re-formation judgment is output, the outer eye wall radius zone, the maintenance duration interval and the uncertainty are predicted, and the method is suitable for real-time business and research.

The utility model provides rotating wheel dehumidification equipment and an air conditioning system, and belongs to the technical field of air conditioning. The rotating wheel dehumidification equipment comprises a first air inlet channel, a first air return channel and a first dehumidification rotating wheel. The first air inlet channel is used for receiving outdoor fresh air. The first air return channel is used for receiving indoor return air; the first dehumidification rotating wheel comprises a first treatment area, a first regeneration area and a second regeneration area which are sequentially arranged in the rotating direction of the rotating wheel; an inlet of the first treatment area communicates with the first air inlet channel so as to be used for adsorbing moisture in fresh air; the first regeneration area communicates with the first air return channel through a first regeneration pipeline, and the first regeneration pipeline is constructed to provide airflow with the first temperature for the first regeneration area. The second regeneration area communicates with the first air return channel through a second regeneration pipeline, and the second regeneration pipeline is constructed to provide airflow with the second temperature for the second regeneration area; wherein the second temperature is greater than or equal to the first temperature. The rotary wheel dehumidification equipment can effectively reduce energy consumption.

The invention relates to the technical field of building environment temperature control, and discloses a temperature control equipment intelligent adjusting method and system based on machine learning, and the method comprises the steps: building a space thermal field sensing network, obtaining multi-dimensional temperature field data, and generating a temperature gradient distribution matrix; and the positions of cold and hot spots are calibrated by combining infrared temperature measurement data, an airflow path is predicted, and air supply parameters are optimized. Meanwhile, building heat capacity characteristics are analyzed, and a thermal response dynamic model is constructed. And the air supply direction is adjusted for the local supercooling area. And based on the temperature change rate and the air supply parameters, the equipment start-stop time is optimized. Through real-time temperature sampling, continuous updating of temperature gradient distribution, cyclic execution of cold and hot spot calibration, airflow prediction and air supply optimization, accurate control of space temperature is realized. According to the invention, the accuracy and energy efficiency of building space temperature adjustment can be obviously improved, and an innovative solution is provided for an intelligent temperature control system.

The embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the air flow circulation assembly comprises a decorative plate, and the decorative plate is provided with an air outlet communicating with the upper portion of the storage cavity and an output port of the air mixing channel, a first air return port communicating with the lower portion of the storage cavity and an input port of the first channel, and a second air return port communicating with the lower portion of the storage cavity and an input port of the second channel; the first return air inlet and the second return air inlet are respectively communicated with different positions of the lower part of the storage cavity. According to the storage box provided by the embodiment of the invention, in airflow circulation between the storage cavity and the airflow circulation assembly, airflow entering and outputting do not conflict, airflow short circuit is avoided, the airflow flowing speed is increased, the airflow temperature and humidity changing speed is increased, and the rapid adjustment requirement of a customer is met.

The invention discloses a multi-agent cooperative control system based on adaptive learning, and belongs to the technical field of multi-agent system control, and the system specifically comprises the steps: collecting and analyzing the wind field data of the position of each agent; distinguishing two typical working conditions of a global uniform wind field and a local disturbance wind field based on a consistency analysis result; for a global uniform wind field, a model prediction control method is adopted to generate a wind field compensation strategy for keeping formation stability; for a local disturbance wind field, an accurate airflow disturbance state is obtained through environment three-dimensional reconstruction and fluid simulation, then the expected track deviation of each agent is predicted, and a collaborative avoidance instruction set is generated in combination with a relative position relationship. According to the method, adaptive cooperative control of multiple agents under different wind field working conditions is realized, the hidden conflict problem caused by local wind field disturbance is effectively solved, and the flight safety and task reliability of an agent cluster in a complex environment are remarkably improved.

The invention relates to the technical field of environment modeling, in particular to a carbon accounting method and system based on artificial intelligence, and the method comprises the following steps: obtaining a carbon emission source rate, a wind direction and airflow intensity, setting a time step length, calculating the spatial distribution of a carbon diffusion trajectory, and calling an airflow influence range to calculate a diffusion path of carbon molecules. According to the method, through multi-source data fusion and dynamic calculation, a carbon emission diffusion path is accurately simulated, the joint calculation of the wind direction, the airflow intensity and the emission rate ensures the accuracy of diffusion trend depiction, the extraction of carbon concentration data is combined with the dominant emission direction, the data pertinence is enhanced, a missing region is filled through gradient difference calculation, and the accuracy of the carbon emission diffusion path is improved. Data integrity is improved, a diffusion path is optimized through error calculation and threshold judgment, the emission rate and airflow intensity are dynamically adjusted, the carbon concentration trend prediction precision is improved, space correlation factors are combined with a region adjustment mechanism, the accounting range is adjusted in a self-adaptive mode, errors are prevented from being divided, and time sequence calculation of carbon emission is optimized.

The invention discloses an L-shaped wind wave flow-earthquake simulation system and method suitable for a high gravity field, the simulation system comprises a model box, a wind generation system, an L-shaped wave generation system, a flow generation system and a vibration seabed model, and the model box is used for accommodating and installing each system and is arranged on a rotating arm of a centrifugal machine in an up-and-down swinging manner; the wind generation system is used for forming horizontal airflow circulation, the L-shaped wave generation system is used for generating waves, the flow generation system is used for generating flow, and the vibration seabed model is used for researching interaction between a maritime work structure and seabed soil under various sea conditions. The simulation system can reproduce sea wind, wave, ocean current and earthquake scenes in a high gravity field.

The invention relates to an airflow jet heat dissipation, dehumidification and dust removal system of a power device, and belongs to the technical field of power supply and distribution. Comprising an electric power device and a protection box body of the electric power device, the electric power device is arranged in the protection box body, at least one airflow ejector is installed in the protection box body, an air outlet nozzle of a jet flow nozzle of the airflow ejector corresponds to the surface of the electric power device, and the jet flow nozzle is in a wedge shape. Jet air generated by the airflow ejector efficiently and uniformly performs heat dissipation, dehumidification and dust removal on the electric power device, so that the purposes of saving air consumption, reducing energy consumption, preventing electric leakage and short circuit of electric appliances, reducing power loss, prolonging the service life of the electric power device and improving the safety and operation stability of the electric power device are achieved.

The present application provides an anti-icing sensor, which belongs to the technical field of detection equipment, and specifically includes a sensitive element, a mounting seat, and a sensor housing connected to the mounting seat. A temperature measuring end is provided on the side of the sensor housing away from the mounting seat, and an anti-icing structure is provided on the temperature measuring end. The sensitive element is connected to the sensor housing and is located on the leeward side of the temperature measuring end. The anti-icing structure is configured as a wedge-shaped structure, and the wedge-shaped structure includes a windward end and a leeward end. The cross-sections of the windward end and the leeward end parallel to the airflow direction are both isosceles triangles, and the first vertex angle of the isosceles triangle of the windward end faces the incoming flow direction, and the second vertex angle of the isosceles triangle of the leeward end faces away from the incoming flow direction, and the angle of the first vertex angle is greater than the angle of the second vertex angle. Through the processing scheme of the present application, the situation where the temperature measuring function of the sensor fails due to icing of the temperature measuring end can be effectively avoided, and the test stability can be improved.

The invention discloses a wind power generation system. The system comprises a ground device; the floating device comprises an adjusting air floating piece and a first annular air floating piece, the adjusting air floating piece is movably connected with the ground device, the first annular air floating piece is connected with the adjusting air floating piece, and a through duct is defined by the inner wall of the first annular air floating piece; the wind power generation device is arranged in the duct; and the position of the gravity center of the adjusting air floating piece in the extending direction of the duct is adjustable. According to the wind power generation system, the influence of airflow disturbance, temperature change and buoyancy lift gas leakage on the floating device can be reduced, the phenomenon that the pitching posture change amplitude is large is reduced, particularly, the included angle between the wind receiving face of the blade of the wind power generation device and the airflow direction is closer to the optimal value, the effective wind energy area flowing through the blade is increased, and the wind power generation efficiency is improved. And the fluctuation of the wind energy yield along with the posture is reduced, so that the wind energy utilization efficiency and the power generation output power are improved.

The invention discloses a mountainous area wind field downscaling optimization method based on high-precision simulation, and relates to the technical field of meteorological numerical simulation, and the method comprises the steps: obtaining the terrain elevation data and meteorological monitoring data of a target mountainous area, recognizing slope abrupt change points, constructing a spiral sampling path, calculating a slope change value, determining the distance between sampling points, and generating target sampling data; performing orthogonal decomposition on the sampled data to obtain a frequency component, calculating a surface fluctuation coefficient, and constructing a boundary disturbance equation to obtain surface stress distribution; calculating an airflow motion state based on surface stress distribution, solving a vorticity equation to obtain vorticity characteristics of a leeward area, and calculating airflow motion correction parameters; and carrying out downscaling iterative operation on the corrected parameters and the meteorological monitoring data to generate target area wind field data with hectometer-magnitude spatial resolution. The simulation precision of the local wind field under the complex terrain condition is improved.

An atmospheric water generator device and a method of adaptive atmospheric water harvesting may include an air processing compartment having a heating member, a water adsorption / desorption compartment having a plurality of water adsorption beds configured to receive an air flow; a condensation compartment having a condenser; a water collection compartment; a controlling unit having a plurality of sensors configured to sense climate conditions, and a controller; and a power generation and storage unit configured to provide the air processing compartment, the water adsorption / desorption compartment, the condensation compartment, the water collection compartment, and the controlling unit with the required electrical energy to operate. The heating member in the air processing compartment is configured to heat the air flow passing through the water adsorption / desorption compartment. A method of generating water may use the atmospheric water generator device.

The invention relates to the technical field of ocean new energy technology utilization, and discloses an oscillating water column type wave energy power generation system with an energy gathering structure at the bottom, which comprises a jacket, an air chamber, a turbine power generation system, a radar altimeter, an infrared camera, an airflow velocity sensor, a control host and a bottom energy gathering assembly, the bottom energy-gathering assembly is installed at the lower end of the air chamber and provided with a transmission mechanism, reflection and diversion of seawater at the bottom of the air chamber are achieved through the arranged horizontal bottom plate and the two symmetrically-arranged energy-gathering plates, energy gathering beyond the width of the air chamber is completed, and opening and closing of the energy-gathering plates are synchronously controlled through the transmission mechanism. And the amount of seawater flowing into the air chamber from the water inlet is changed. According to the wave energy power generation system, the oscillation intensity of the water column in the air chamber can be adjusted according to changes of sea surface waves, the speed of the generated air flow can be matched with the optimal working frequency of the turbine power generation system, the power generation efficiency of the device is guaranteed, and the oscillation water column type wave energy power generation device can be protected and prevented from being impacted by sea waves.

The invention discloses a power transmission line short-time icing growth prediction method considering microtopography influence, and particularly relates to the technical field of icing growth prediction.The method comprises the steps that a structure state sequence at a power transmission line tower is obtained, disturbance characteristics are calculated, and combined judgment is executed to output a structure disturbance state identifier; by obtaining a structure state sequence and executing disturbance characteristic calculation, the structure disturbance state is jointly judged; in a structure disturbance state, a disturbance correction wind speed field is formed based on disturbance calculation and terrain factors, airflow retention is recognized, and the water vapor gathering amount is calculated; then constructing a structure disturbance feedback path and executing icing growth prediction, and dynamically updating the feedback path weight based on a prediction offset result; and calculating a feedback score value in a rolling manner and identifying a structure disturbance dominant region, thereby realizing ice coating growth prediction path identification and increment output under linkage of a structure disturbance state, disturbance airflow characteristics and terrain factors.

The invention relates to the technical field of heat dissipation, in particular to a standing wave heat dissipation device and system, and the device comprises an active film and a passive film which are oppositely arranged. A standing wave cavity is arranged between the active film and the passive film. The cavity wall of the standing wave cavity is provided with an air flow hole channel. The active film and the passive film can vibrate in opposite directions at the same frequency, form standing waves in the standing wave cavity, continuously extrude gas in the cavity and present a surge state, so that the air in the standing wave cavity is continuously compressed and extruded from inside to outside to form an inside-outside pressure difference, and the gas in the standing wave cavity is repeatedly extruded to pass through the gas flow hole channel; and the air flow is jetted to the outside of the standing wave cavity at a high speed in a surge state to form a continuous constant high-speed air flow. When the standing wave heat dissipation device provided by the invention is used for heat dissipation, the active film and the passive film are subjected to reverse same-frequency vibration to form standing wave extrusion airflow, and compared with single vibration film vibration extrusion airflow, the airflow is faster, the efficiency is higher, and the heat dissipation effect is better.

The invention relates to the technical field of helicopter aerodynamic force simulation, and discloses a sea rescue helicopter rotor aerodynamic force simulation method and system. The method comprises the following steps: acquiring a rotor wing downwash airflow historical speed data set, a historical sea surface wave data set and a historical aerodynamic pressure data set monitored within a preset historical time range; executing a dynamic volatility analysis process on the three types of historical data sets to generate a speed volatility index, a sea surface wave volatility index and an aerodynamic pressure volatility index; taking the three types of volatility indexes as guide parameters, performing adaptive search operation in a rotor aerodynamic force simulation parameter database, and determining an optimal simulation time interval; and performing numerical calculation simulation on pneumatic coupling between the rotor wing and the sea surface according to the optimal simulation time interval to generate a simulation data sequence, performing feature extraction and classification on the simulation data sequence by using an aerodynamic force recognition model, and outputting a rotor wing aerodynamic force simulation result.

The invention provides a radar rainfall real-time estimation system based on double-method fusion and ground verification, belongs to the technical field of meteorological radar rainfall estimation, and adopts double-method fusion of a physical model estimation module and a driving model estimation module to cooperate with a causal inference fusion engine to improve the precision and adaptability of rainfall estimation and improve the rainfall estimation accuracy. The physical model module adaptively selects a Z-R, ZDR-R or KDP-R relation according to the quality of radar-based data and rainfall scenes, drives the model module to capture space-time nonlinear evolution characteristics of rainfall echoes and predicts short-time rainfall dynamics, and the causal inference engine identifies differentiated characteristics of two estimation fields, inferes hail, vertical airflow and other physical hybrid factors, and performs real-time prediction on the hail, the vertical airflow and other physical hybrid factors. A comprehensive rainfall estimation field is generated, a continuous error correction field converted from ground station observation data is corrected through a space-time error atlas network, and finally rainfall estimation information is generated for real-time rainfall estimation, so that the adaptability to a complex weather field and the precision of the estimation field are improved.

The invention discloses a high-altitude parabolic positioning traceability analysis method and system, and particularly relates to the technical field of positioning traceability. Motion parameters of an object are calculated by adopting a multi-frame image analysis method, rotary motion is detected by utilizing a deep learning algorithm, if rotation exists, a Magnus effect compensation model is introduced to correct trajectory calculation, meanwhile, wind speed and wind direction data are collected in real time, airflow change is simulated in combination with a computational fluid dynamics model, and the influence of wind power on the trajectory is corrected. Based on the corrected trajectory data, the initial throwing position of the object is reversely deduced in combination with a building three-dimensional structure model, a target person in charge is determined, and a complete traceability report is generated by comparing an analysis result with a monitoring video, so that the accuracy and traceability of traceability analysis are ensured. The method can effectively reduce the calculation error caused by the rotation effect, wind field interference and other factors, improves the precision of high-altitude parabolic traceability, and provides a scientific basis for responsibility determination.

The present invention provides a salt fog solid particle concentration monitoring system for coastal environments, which adopts a salt fog solid particle concentration monitoring device and an external processing system. The device includes a hard enclosure and two valve assemblies arranged inside the hard enclosure, an adaptive tightening system and two monitoring mechanisms. The hard enclosure has an air flow channel that passes through the front and back. The two valve assemblies divide the air flow channel into three spaces along the longitudinal direction of the air flow channel. The valve assembly includes an air intake mechanism and an air outlet mechanism. When the air flow reaches a predetermined wind force level, the air flow opens the air intake mechanism and the air outlet mechanism on the windward side and enters the middle space, driving the adaptive tightening system so that the adaptive tightening system closes the air outlet mechanism on the windward side. At the same time, the air flow continues to move forward and flows through the monitoring mechanism on the leeward side. The monitoring mechanism is used to monitor the salt fog solid particle concentration of the air flow passing through.

The invention discloses an intelligent smoke furnace catalysis operation condition suitability grading method. The method comprises the steps that basic parameters of an operation point are obtained; calling a Passive-Toner algorithm to calculate the atmospheric stability grade of the operation point; the continuous cigarette lighting source intensity is calculated according to the used flame bar combustion data; calculating the vertical airflow distribution of the operation point by adopting a Matviyerv vertical velocity theoretical model based on the altitude and vertical airflow observation data of the operation point; based on the continuous cigarette lighting source intensity, calculating the ice nucleus number concentration distribution in the cloud in combination with the vertical airflow distribution and the horizontal wind field; calculating an operation suitability index by adopting a comprehensive index algorithm in combination with the lifting condensation height, the cloud amount and the cloud classification data; and performing grading processing on the job suitability index according to a set threshold value combination so as to output a plurality of job suitability grading results. According to the method, comprehensive analysis is carried out by considering the meteorological condition and the catalytic condition of the operation point, so that the accuracy and the credibility of an operation condition suitability judgment result are improved to a certain extent.

The invention relates to a wind tunnel PIV tracer particle rapid and uniform cooling and mixing device, and the device comprises a mixing channel section which is internally provided with a mixing channel, and the mixing channel is cylindrical; the first airflow inlets are formed in the end face of the inlet end of the mixing channel section and are annularly distributed along the end face of the inlet end of the mixing channel section; the center of the ring where the first airflow inlet is located coincides with the axis of the end face of the inlet end of the mixing channel; the second airflow inlet is formed in the end face of the inlet end of the mixing channel section and is formed in the axis of the end face of the inlet end of the mixing channel; the third airflow inlet is formed in the inlet end of the mixing channel section, and the third airflow inlet is formed in the tangential direction of the radial section of the mixing channel; the airflow outlet is formed in the outlet end of the mixing channel section; the first, second and third airflow inlets are in communication with the mixing channel. The device has the advantages of being simple in structure and low in cost, rapid mixing heat transfer of wind tunnel PIV tracer water particles can be achieved, and large-proportion collision in the mixing process is avoided.

The invention provides a double-channel air inlet mixing rectifying device which comprises an inner culvert high-temperature air flow channel, an inner culvert rectifying cone is fixedly arranged at an inner culvert outlet of the inner culvert high-temperature air flow channel, and the head structure of the inner culvert rectifying cone is obtuse; a flow channel of the outer culvert rectifying cavity comprises a first-stage outer culvert rectifying plate, a second-stage outer culvert rectifying plate, a third-stage outer culvert rectifying plate and a fourth-stage outer culvert rectifying plate, airflow holes are formed in the first-stage outer culvert rectifying plate so that the flow channel can be divided into a first-stage rectifying cavity and a second-stage rectifying cavity, airflow holes are formed in the second-stage outer culvert rectifying plate so that the flow channel can be divided into a second-stage rectifying cavity and a third-stage rectifying cavity, and airflow holes are formed in the third-stage rectifying cavity. An outer culvert inlet of the outer culvert rectifying cavity is formed in the first-stage rectifying cavity; the multiple third-stage outer culvert rectifying plates are evenly arranged in the flow channel in the circumferential direction so that the flow channel can be divided into a third-stage rectifying cavity and a fourth-stage rectifying cavity, and the multiple fourth-stage outer culvert rectifying plates are evenly arranged at an outlet of the fourth-stage rectifying cavity in the circumferential direction. The air flow field uniformity of the inner culvert outlet and the outer culvert outlet of the device is improved, and the afterburner test piece inlet flow field requirement is met.

A thrust reverser includes a fixed structure and a movable structure defining an air stream, a flap including a single wall perforated on the surface thereof, and a structure strengthening the flap and having an acoustic function. The flap being articulated between the fixed structure and the movable structure to allow in a direct jet position, disposing the wall along an acoustic section of the movable structure and allowing the circulation of an air flow through the air stream, the acoustic section forming with the structure of the wall an acoustic resonator, and in a reverse jet position, disposing the wall to deflect an air flow passing through the air stream and allow the passage through the wall and through the air stream of a portion of the air flow deflected by the flap.

The present invention discloses an active control wind tunnel for separately simulating mean wind and pulsating wind, belonging to the technical field of wind tunnel experimental research. This wind tunnel is a single test section direct current unsteady wind tunnel. A power section A is arranged at the front section of the wind tunnel. The power section A includes an array of fans for generating pulsating wind located at the very front end of the wind tunnel and a fan A for generating mean wind located in the flow direction of the pulsating wind air flow. The air flows generated by the array of fans and the fan A pass through the test section and are finally discharged from the air outlet at the end of the wind tunnel. A rainfall device is arranged in the test section. The wind tunnel is controlled by two independent active control modules, namely the fan A control system and the array of fans control system. The array of fans and the fan A can be used separately or in combination to achieve the simulation of complex wind field changes. A steady wind tunnel can also be arranged under the unsteady wind tunnel. The two layers of wind tunnels can be used separately or in combination to achieve specific functions such as simulating natural phenomena.

A full-circumferential wind gathering device comprises a wind gathering structure, a Venturi tube acceleration structure and a wind blocking structure. The air collecting structure comprises a body, a plurality of upper-stage guide vanes and a plurality of lower-stage guide vanes, the upper-stage guide vanes and the lower-stage guide vanes are arranged on the body and arranged in a staggered mode, the lower end of the body is connected with the upper end of the Venturi tube acceleration structure, and the air blocking structure is fixed to the lower end of the Venturi tube acceleration structure. Wind is blown from the direction parallel to the ground, captured by the upper blades and guided into channels between the upper blades on the windward side, after airflow enters the channels, the speed is gradually decreased, airflow kinetic energy is converted into pressure energy, and the pressure energy is gathered and compressed at the arc-shaped concave position of the inner taper pipe to form an inlet high-pressure area. According to the two-stage staggered type inlet guide vane structure and the layout optimization method thereof, two-stage staggered type key improvement is conducted on the inlet guide vane structure, adaptive adjustment is conducted on the overall structure layout of the inlet guide vane structure, all-circumferential incoming flow convergence is achieved, and the wind gathering acceleration effect of the device is improved.

The invention discloses a low-altitude aircraft route real-time meteorological risk early warning method and system, and belongs to the technical field of flight risk identification. The method is used for solving the technical problem that the missing report rate of sudden weather phenomena such as wind shear and micro downburst in an existing scheme is high. The three-dimensional wind shear and turbulence intensity is identified through bimodal cooperation, and the limitation of traditional single-parameter identification is broken through; through independent modeling of normal rigidity and tangential damping, the risk characteristics of vertical airflow and horizontal wind shear are decoupled, so that the risk identification precision can be effectively improved; a height self-adaptive threshold value can effectively reduce the false alarm rate of a low-altitude complex terrain scene; according to the nonlinear attenuation control, through a tanh function, a dynamic response that the larger the risk overshoot is, the stronger the control force is is, and the risk energy propagation depth can be effectively reduced; by using the amplification effect of fractional differential on weak disturbance, the detection rate of risk abrupt change can be effectively improved, and missing report of sudden risks is avoided.

The invention discloses an unmanned aerial vehicle water body fixed-point sampling device, which relates to the technical field of water sampling, and comprises an unmanned aerial vehicle body and a telescopic rod arranged below the unmanned aerial vehicle body, the airflow collecting mechanism is arranged outside the telescopic rod and can be automatically unfolded or folded according to lifting of the unmanned aerial vehicle body; the air collecting disc is located below the telescopic rod and used for collecting airflow; the airflow guiding mechanism is arranged at the bottom of the air collecting disc and used for circularly supplying air to the water surface from inside to outside; a sampling pipe capable of automatically rotating and moving downwards according to lifting of the unmanned aerial vehicle body and a spiral probe installed at the bottom of the sampling pipe and capable of synchronously rotating with the sampling pipe and moving downwards are arranged in the wind collecting disc, and wind power of the airflow guiding mechanism drives the water surface to regularly diffuse water ripples outwards, so that duckweeds are made to be away from a sampling center along with the ripples; water surface fluctuation is reduced, it is ensured that the water sample is not interfered by underwater sediment, and interference of underwater obstacles is further avoided through cooperation with the spiral probe which automatically rotates and moves downwards.

The invention discloses a fan blade icing risk assessment and early warning method and system. The method comprises the following steps: acquiring meteorological parameters of a wind power plant; inputting the meteorological parameters into a blade three-dimensional ice shape model to simulate the icing state of the surface of the fan blade so as to obtain icing forms of different positions of the blade; the aerodynamic characteristics of the iced blade are calculated through the icing forms of the different positions of the blade, aerodynamic characteristic parameters of the two-dimensional icing airfoil profile structures of the different positions are obtained, and the external airflow field change of each two-dimensional section is obtained; according to the airflow field change, the wind energy utilization rate is calculated; and based on the icing forms of different positions and the wind energy utilization rate, evaluating the icing disaster-causing risk level and performing early warning. According to the method, three-dimensional icing simulation and pneumatic calculation of the fan blade are combined, the relation about the influence of icing on the pneumatic performance and the power characteristic of the wind driven generator is obtained, intelligent risk assessment of the icing disaster of the wind power plant is achieved, and therefore safe operation of the wind driven generator in the severe environment of the icing area is ensured.

The invention relates to a device and a method for automatically adjusting airflow pulsation speed along with wind speed change. The device comprises a grating blade, a grating blade mounting frame mechanism, a grating blade horizontal righting mechanism, a grating blade flapping wing vibration executing mechanism and a grating blade flapping wing amplitude adjusting mechanism, the grating blade mounting rack mechanism is fixedly arranged in the wind tunnel; the grating blades are arranged on the grating blade mounting frame mechanism; the grating blade horizontal righting mechanism is positioned above the wind tunnel and is connected with the grating blade mounting rack mechanism; the grating blade flapping wing vibration executing mechanism is located below the wind tunnel, and the grating blade flapping wing amplitude adjusting mechanism is arranged on the grating blade flapping wing vibration executing mechanism and connected with the grating blades through a transmission connecting rod. According to the invention, the replacement process of a traditional damping net, a grating and the like is omitted, the test efficiency and the normalization are improved, the airflow pulsation speed can be automatically adjusted according to the wind speed change, the purpose of keeping the turbulence basically constant under different wind speed conditions is achieved, and the accuracy and the reliability of test data are effectively improved.

The invention relates to the technical field of CCUS, and discloses an offshore sandstone CCUS technology optimization method and system and computer equipment. The offshore sandstone CCUS technology optimization method comprises the steps that an offshore area with a sandstone layer is obtained, an offshore platform is established, and direct air capture equipment is arranged on the offshore platform; a novel amine-containing absorbent is adopted to absorb carbon dioxide in the air which is directly absorbed by the air capturing equipment; the absorption tower adopts a composite material and a coating structure; fluid dynamics simulation software is adopted to calculate air flow and liquid flow in the carbon capture process, simulation data are analyzed, and fluid distribution in the tower and the tower body structure are optimized; conveying the extracted carbon dioxide to a geologic structure under a seabed of a storage place through a pipeline for sealing and storing; and evaluating the potential influence on the marine ecosystem by adopting an ecological model and environment simulation software, and generating an influence report. The carbon dioxide capturing and storing efficiency and safety can be improved, and meanwhile the influence on the environment is minimized.