2938 results about "Airflow" patented technology

The invention discloses a tunnel ventilation control system and method based on artificial intelligence, and relates to the technical field of ventilation control, and the method comprises the steps: in a tunnel design stage, building an unsteady-state computational fluid dynamics model based on tunnel three-dimensional linear parameters, calculating turbulence structures under different traffic conditions through a large eddy simulation method, and calculating an unsteady-state computational fluid dynamics model; determining an optimal space configuration scheme of the fan group according to the distribution of the velocity field and the pressure field; in the tunnel construction stage, multiple types of sensor arrays are arranged along the vault and the side wall of a tunnel in a layered mode; in the tunnel operation stage, real-time vehicle tracks and speed distribution information of a traffic monitoring system are obtained; establishing a ventilation demand dynamic prediction model based on space-time correlation analysis, constructing a fan cooperative control model considering airflow organization optimization, and solving an optimal operation strategy by adopting a multi-target adaptive weight distribution algorithm; when a fire characteristic signal is monitored, the multiple sets of fans are coordinated to form a relay type smoke exhaust airflow organization.

The invention provides a method and a system for actively monitoring, regulating and controlling a clean room, which are characterized in that environmental parameters in the clean room and spatial state information of a dynamic object are acquired through cooperation of a fixedly arranged sensor and a sensor carried by a mobile device, and the environmental parameters comprise airflow velocity, temperature and humidity, pressure difference, particulate matter concentration, illuminance and the like; the dynamic objects comprise positions of the personnel and the equipment and geometric models of the personnel and the equipment. And cleaning and fusing the collected data to generate a standardized parameter sequence with a time label, and constructing a three-dimensional dynamic environment model by combining a clean room structure and dynamic object information to realize grid mapping and visual management of environment parameters in the model. And on the basis of the model, an environment state change trend is predicted, risk grade evaluation is executed, a hierarchical regulation and control instruction is generated, closed-loop regulation and control and parameter adaptive adjustment of the clean room environment are finally realized, and the intelligent and refined level of clean room environment regulation and control is improved.

The invention provides an intelligent adjustment method for distributed air treatment equipment, and belongs to the technical field of air treatment equipment, and the method comprises the steps: inputting a personnel distribution image into an airflow field reconstruction model based on a graph neural network, outputting three-dimensional space flow field distribution data, calculating a personnel intensity index, and predicting an average thermal sensation index value; an air supply adjustment double-layer game model is established based on the data, the air supply angle and the air supply speed of an electric side supply nozzle and the air supply quantity of a lower air supply outlet are solved, an actuator is controlled to adjust air supply parameters, and the target air outlet temperature and the refrigerant flow of the heat exchanger are calculated through a thermodynamic entropy production minimization heat exchange optimization algorithm; and feedback correction is performed according to the actually predicted average thermal sensation index deviation to form closed-loop control, so that the technical problem that the distributed air treatment equipment is difficult to adjust the air supply parameters in real time according to the personnel distribution dynamic change so as to ensure the thermal comfort and the energy efficiency at the same time is solved.

The invention discloses a creep test system of a turbine rotor blade film hole simulation piece and a test method of the creep test system. Comprising a clamping assembly used for fixing a test piece, a loading assembly used for applying a load to the test piece, a strain measuring assembly used for measuring the strain rate of the test piece, a heating assembly used for covering the test piece to form a heating channel, and a cooling assembly used for manufacturing and conveying cooling airflow to flow through the interior of the test piece, the strain measurement assembly is used for measuring the external temperature of the test piece and the internal temperature of the test piece, the control assembly is connected with the strain measurement assembly, the heating assembly, the cooling assembly and the temperature measurement assembly, and the heating assembly is used for manufacturing and conveying high-temperature airflow to flow through the heating channel so as to heat the outside of the test piece to a first set temperature; the cooling assembly is used for cooling the interior of the test piece to a second set temperature, and the heating assembly and the cooling assembly are used for forming a dynamic convection environment around the test piece.

The invention relates to the technical field of energy storage cabinet safety monitoring, in particular to an energy storage cabinet multi-parameter intelligent monitoring device based on an MEMS sensor array, a sensor array unit in the energy storage cabinet multi-parameter intelligent monitoring device comprises distributed MEMS temperature and vibration sensors, the temperature sensors are installed in a non-vertical mode, detection deviation caused by direct blowing of airflow is avoided, and the energy storage cabinet multi-parameter intelligent monitoring device based on the MEMS sensor array is obtained. The airflow disturbance correction unit corrects temperature original data in real time and eliminates interference of airflow on module body temperature detection by means of a heat dissipation airflow vector field dynamic model and a compensation algorithm, and the multi-parameter coupling analysis unit processes vibration and temperature signals in a double-channel mode, extracts tab loosening high-frequency micro-vibration characteristics and correlates the temperature rising rate. Early fault logic is triggered through two-stage judgment, the fault decision and output unit fuses the correction temperature, the coupling strength coefficient and the speed-up ratio, graded early warning is generated through a fault tree model and transmitted to an external monitoring system, and accurate monitoring of early faults of the energy storage cabinet is achieved.

The invention relates to the technical field of wafer test equipment, in particular to a heating aging test tool which comprises a storage rack and further comprises a wafer clamp placed on the storage rack. The detection assembly comprises a plurality of elastic probes located on one side of the storage rack and a heating disc; and the hot air guide assembly comprises a ventilation male head arranged on one side of the heating disc, an air guide pipe is arranged on the side, away from the ventilation male head, of the heat conduction cover, the air amount in the cavity is gradually decreased from near to far away from the air guide pipe, and the air flow speed is gradually decreased. A hot air flow guide assembly is arranged on a conveying frame, heat of a heating disc is guided to the position above a wafer through airflow through a heat conduction cover, the space above the wafer is divided into a plurality of cavities, the space size and the space shape of each cavity are set, the air flow speed and the contained hot air amount of each space are adjusted, and therefore the heat conduction efficiency of the wafer is improved. The influence of heat loss in the air flow process is reduced, so that the heating effects of all parts of the wafer are similar, and the detection effect is improved.

The invention discloses a distribution box room environment parameter integrated measurement method, and particularly relates to the field of multi-parameter measurement, and the method comprises the steps: firstly constructing a machine room three-dimensional model and a sensor correlation degree matrix, then building a heat balance, humidity diffusion and airflow motion model, and calibrating parameters; deploying a measurement system and calibrating through dual synchronization and cross check; establishing a sensor confidence evaluation system and an adaptive threshold based on 72-hour reference data; fusing calibration data by adopting a three-level correlation calibration mechanism; four types of measurement modes and conversion logics are designed, and measurement resources are dynamically allocated through environmental risk assessment; multi-dimensional state parameters are extracted, a comprehensive evaluation value is calculated through normalization, dynamic weighting and combinatorial algorithms, and five-level early warning response is achieved; according to the method, multiple models and an intelligent algorithm are integrated, the parameter measurement precision and the environment risk identification efficiency are improved, the response delay is reduced, the fault diagnosis accuracy is improved, and reliable technical support is provided for safe operation and maintenance of the distribution box room.

The invention discloses a switchable graded sampling pre-construction control method for dust and a detection device. The method comprises the following steps: synchronously acquiring data through multiple types of sensors, constructing a condensation risk prediction model, calculating a condensation risk index RI and dividing risk grades; based on the risk level, dynamically adjusting the target power of the heating wire, the blowback period of the air pump and the airflow speed, and cooperatively triggering an electrode cleaning and trapping filter screen switching program; after cleaning is completed, follow-up control parameters are dynamically adjusted; and closed-loop control is formed. According to the method, the temperature and humidity sensor is arranged in the external environment to obtain background parameters, the airflow velocity sensor is used for sensing the working condition change of the air pump, and a dynamic condensation risk prediction model is established, so that excessive heating is avoided fundamentally, and evaporation loss of semi-volatile substances is prevented; therefore, the accuracy of a dust concentration detection result is remarkably improved in an extreme humidity environment.

The invention provides a wind turbine generator blade pneumatic unbalance monitoring method and system based on deep learning, and belongs to the field of deep learning. Airflow motion state data generated by a distributed sensing array in the operation process of a wind turbine generator blade are collected; performing aerodynamic feature extraction and unbalance degree quantization processing on the airflow motion state data to obtain a blade aerodynamic feature vector set; correlation learning is carried out on the blade aerodynamic feature vector set and a preset blade historical aerodynamic performance evolution trajectory, and an aerodynamic imbalance development prediction vector is generated; based on the pneumatic unbalance development prediction vector, performing unbalance trend dynamic analysis to obtain a key influence factor and an influence degree sequence of pneumatic unbalance of the blade; and outputting an evaluation result of the pneumatic imbalance of the blade and a corresponding predictive maintenance strategy according to the key influence factor and the influence degree sequence. The adaptability of the maintenance strategy and the pneumatic unbalance state of the blade can be improved, and monitoring and predictive maintenance of the pneumatic unbalance of the blade of the wind turbine generator system are supported.

The invention relates to the technical field of dew point measurement, in particular to an intelligent temperature control system and method based on a high-precision chilled mirror dew point meter, and the system comprises a chilled mirror temperature difference positioning module, a main signal selection module, a power response matching module, an interference airflow recognition module, and a current output instruction generation module. A cold mirror end temperature difference is obtained, a section and a lifting direction are judged, synchronous measuring points are screened, a minimum deviation signal is extracted, a power section is matched, a power-on instruction is constructed, a rheumatism disturbance level is identified, parameters are spliced to generate a conduction structure, and a cold mirror temperature control instruction is output. According to the method, section identifiers are constructed through temperature differences and temperature change directions, signals are screened based on time alignment, interference is avoided, power control positions section deviation directions through difference values, disturbance identification is combined with wind speed and humidity differences, disturbance levels are refined, power-on control generates time sequence instructions through multi-parameter splicing, instruction stability and control accuracy are improved, and the method is suitable for large-scale popularization and application. And dynamic closing logic is formed.

The invention discloses a high-horsepower fuel oil dune buggy gas supply assembly, and belongs to the technical field of internal combustion engine gas inlet systems, the high-horsepower fuel oil dune buggy gas supply assembly comprises an outer cover, a sealed space is limited in the outer cover, and the outer cover is provided with a gas inlet head and a gas exhaust head; the inner container is arranged in the sealed space of the outer cover, and the inner container comprises a first inner shell and a second inner shell; and the pumping piece is arranged in the first inner shell and used for pressurizing air and pumping the air to the second inner shell. Through optimization of the overall structure, high-pressure airflow is generated through the pumping piece, air is physically separated into cold air and hot air in the vortex chamber, and cold air far lower than the environment temperature can be actively provided for an engine without any refrigerant and a complex compressor; the problems that the fuel oil dune buggy is low in inflation efficiency and high in detonation risk in a high-temperature environment are solved, strong, stable and continuous power is output, and power attenuation of the high-horsepower fuel oil dune buggy caused by high-temperature protection of an engine is relieved.

The invention discloses an unconventional feed quality assessment method and system, and relates to the technical field of unconventional feed quality assessment, and the method comprises the following steps: in a feed high-temperature drying treatment process, establishing a multi-dimensional sensing monitoring baseline, continuously obtaining mercury vapor concentration gradient, moisture evaporation rate and airflow velocity field data in a feed drying environment, and calculating the quality of the feed; forming a time sequence feature set reflecting the dynamic change of mercury vaporization; and constructing a gas-solid interaction analytical model by using the time sequence feature set, and carrying out coupling analysis on the mercury vapor migration trajectory and the temperature distribution and humidity distribution of the feed particle surface to generate a spatial distribution data set representing the spatial distribution feature of the mercury vapor redeposition region. According to the invention, the whole-process monitoring and dynamic regulation and control of mercury vaporization, migration and redeposition in the feed drying process are realized, through multi-dimensional monitoring, amplitude limiting control and high-frequency disturbance, the mercury distribution is balanced, the risk is reduced, the drying safety and the feed quality stability are improved, and the controllable management of heavy metal pollution is effectively realized.

The invention relates to a shielding type total temperature probe, the end part of the total temperature probe is provided with a fixing part, the fixing part is fixedly provided with a shielding cover, the shielding type total temperature probe comprises a pair of thermocouple wires which are fixedly arranged on the fixing part, and the top end parts of the pair of thermocouple wires are positioned in the shielding cover and are fixedly provided with a temperature sensing element together; the vortex generators are fixedly installed on the inner wall of the shielding cover at intervals in the circumferential direction, and the vortex generators are arranged downwards in an inclined mode; an air inlet is formed in the top end of one side face of the shielding cover, and an air outlet is formed in the bottom end of the other side face of the shielding cover, so that airflow enters the shielding cover from the air inlet, flows through the vortex generator and then flows out from the air outlet. The total temperature probe can improve the temperature of the inner wall surface of the shielding case and reduce radiation errors; due to the introduction of the vortex generator, the airflow resistance is increased, the airflow temperature of a larger proportion is converted into the airflow total temperature, and the speed error is reduced; and the size and the arrangement mode of the vortex generator can be changed in a targeted manner according to different test environments, so that a high-precision airflow total temperature measurement result can be obtained.

The invention relates to the technical field of temperature-rise-resistant electric energy metering box testing, in particular to a temperature-rise-resistant electric energy metering box and temperature rise testing equipment thereof, and the temperature-rise-resistant electric energy metering box comprises a box body, a heat dissipation module, a first sensing module and an automatic control module. Through real-time data feedback of the first temperature sensor and the first humidity sensor, the automatic control module can automatically trigger heat dissipation mode switching, and in a high-humidity environment, the first electric push rod drives the inverted-U-shaped cover plate to seal an outer air inlet and an outer heat dissipation opening to form a closed space; through cooperation with an inner circulation path of an air inducing flow channel, an inner air inducing opening, an air compression cooling unit, an air inducing barrel and an inner air outlet, external humid air can be isolated, the wiring terminal is prevented from being oxidized and corroded, and efficient cooling can be achieved through air compression cooling; in a low-humidity and high-temperature environment, the cover plate moves upwards to start external circulation, external air enters the box after dust is filtered out through the filter screen, and heat is taken away through rapid airflow circulation of the outer air inlet, the induced air flow channel and the outer heat dissipation opening.

The invention relates to the technical field of environmental protection, in particular to a spraying dust removal method, equipment and system. The spraying dust removal equipment comprises an outer cylinder and an adjusting mechanism, wherein a smoke inlet is formed in the lower part of the outer cylinder. The adjusting mechanism comprises an adjusting assembly and a plurality of turbulent balls. The adjusting assembly comprises a pull ring, a net bag and a driving unit. The smaller the initial dust air flow entering the smoke inlet is, the larger the upward moving stroke of the pull ring driven by the driving unit is, the upward moving of the pull ring drives the middle of the net bag to be further sunken downwards, the structure is convenient for weak air flow to preferentially pass through the periphery of the net bag with a small number of turbulent balls, effective turbulent washing is formed in the area, and the working efficiency is improved; and the normal operation and the dust removal effect of the equipment under low load are ensured. The invention provides a spraying dust removal method, equipment and a system, aiming at solving the problems that the dust removal efficiency is low and even the dust removal device cannot work when the flow of dust gas introduced into the existing dust removal device does not reach a preset dust gas flow range value.

The invention belongs to the technical field of exhaust valves, and particularly relates to a composite exhaust valve with an integrated buffering and filtering assembly, which comprises a shell, a supporting block is fixedly arranged at one end of the shell, an air inlet head is fixedly arranged on the supporting block, a cavity is formed in the supporting block, a concave groove is formed in the cavity, and a sealing strip is arranged at the top of the concave groove. Cylinders are connected to the bottom of the concave groove in an array mode, a connecting rod is fixedly arranged at the bottom of the concave groove, a bottom plate is fixedly connected to the bottom end of the connecting rod, and a buffering mechanism is arranged in the cavity. According to the composite exhaust valve with the integrated buffering and filtering assembly, by arranging the filter cylinder and the baffle, efficient buffering and filtering treatment can be conducted on conveyed air pressure, stable operation of pneumatic equipment is guaranteed, the conveyed air pressure enters the cavity after being filtered through the filter cylinder, impurities such as particles in an air source can be effectively intercepted, and the effective circulation section of compressed air can be changed by adjusting the angle of the baffle; the narrower the circulation space is, the slower the airflow speed is, throttling buffering is achieved, and the working stability of the exhaust valve is guaranteed.

The present invention relates to equipment that can realistically reproduce various types of airflow occurring in environments such as an urban area with tall buildings or regions with mountains and valleys, thereby enabling verification of the flight safety of a multicopter-type drone. The present invention comprises: a housing that provides a tunnel-shaped test space in which a plurality of blowers, together with controllers, are installed along the longitudinal direction of both sidewalls of the interior, the ceiling, and the floor, to generate airflows such as crosswinds, updrafts, downdrafts, and vortices; and an integrated control unit that selectively or simultaneously controls some or all of the plurality of controllers installed in the housing so as to form airflows in pattern corresponding to user input or settings.

The invention discloses a mine inlet air purification device suitable for a sandstorm environment, and belongs to the technical field of mine ventilation equipment.The mine inlet air purification device comprises an air inlet box, an air inlet channel is formed in the upper portion of the air inlet box, a collecting cavity is formed in the lower portion of the air inlet box, a partition plate is fixedly arranged between the air inlet channel and the collecting cavity, and a plurality of vertically-through through holes are evenly formed in the partition plate; first impact plates are arranged on the inner wall of one side of the air inlet channel, second impact plates are arranged on the inner wall of the other side of the air inlet channel, the first impact plates and the second impact plates are alternately arranged in multiple sets at intervals in the length direction of the air inlet channel, and the included angle between the windward sides of the first impact plates and the windward sides of the second impact plates is an obtuse angle. The first impact plates extend to the positions between the adjacent second impact plates, and the second impact plates extend to the positions between the adjacent first impact plates, so that an S-shaped air flowing path is formed in the air inlet channel. Sand dust and airflow are efficiently separated, meanwhile, the sand dust falls into the collecting cavity, and it is guaranteed that the through-flow area of the air inlet channel is stable.

The invention provides a wind tunnel airflow and structure response coupling analysis method, and belongs to the technical field of wind tunnel construction, and the method comprises the steps: installing a multi-sensor array at a wind tunnel test section to obtain a structure response time sequence set, starting a GPU double-layer calculation unit to carry out the fluid mechanics calculation, and obtaining an airflow mass vector matrix; a time domain superposition algorithm is utilized to construct an airflow superposition feature matrix to extract multi-frequency domain response features, an airflow skewness stability matrix is calculated to quantify the asymmetry influence of an airflow field, a structural response stability feature matrix is established to represent structural stability features, and the four feature matrixes are input into a wind tunnel coupling prediction model for training and prediction. The hierarchical fusion weight parameters are dynamically adjusted through the adaptive adjustment function to adapt to different working conditions, a high-precision airflow quality prediction result is finally output, and the technical problems that in a wind tunnel test in the prior art, airflow and structure response coupling analysis precision is low, and calculation efficiency is insufficient are solved.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention belongs to the technical field of ventilation and air conditioning, and discloses an intelligent ventilation wall control method and system.The intelligent ventilation wall control method comprises the steps that real-time airflow parameters and temperature parameters of an indoor area are obtained; identifying a potential hot pressure difference disturbance area according to the airflow parameters; acquiring a disturbance response level of the potential hot pressure difference disturbance area at each moment according to the airflow direction change and the temperature gradient stability of the potential hot pressure difference disturbance area at adjacent moments in the analysis time period; screening a high-priority control region based on the disturbance response level; according to the disturbance response level of the high-priority control area at each moment and the temperature parameter of the high-priority control area at the same moment, obtaining an adjustment guidance index of the corresponding control area; the air supply amount and the air supply direction of the ventilation wall are dynamically adjusted based on the adjustment guidance index, so that transient hot pressure difference disturbance in the area is responded in real time; and the energy-saving effect of the ventilation wall system is greatly improved.

The utility model discloses an immersed rotary ceramic membrane aeration device which comprises a base, a waterproof rotary motor, a rotary ceramic membrane component and a rotary joint, an internal air channel of the rotary ceramic membrane comprises an inner ring air collection cavity, a plurality of air flow channels with the same size and structure and an outer ring aeration cavity, the inner ring air collection cavity is communicated with air outlet holes corresponding to the rotary ceramic membrane where the inner ring air collection cavity is located and is communicated with the outer ring aeration cavity through the air flow channels, and different air flow channels distribute air independently. The inner ring gas collection cavity carries out secondary distribution on inlet gas, so that gas distribution is more uniform, the gas subjected to secondary distribution passes through the gas flow channels to be uniformly aerated, and meanwhile, the outer ring aeration cavity at the tail ends of the gas flow channels communicates all the gas flow channels, so that the aeration uniformity in each gas flow channel is further ensured. The whole device can be submerged into water for use, and is relatively flexible, simple and convenient to install, maintain and apply.

The utility model relates to the technical field of dust screening equipment, and particularly discloses a pipeline type vortex dust screening device which comprises a main shell, an annular cavity is formed in the main shell, a variable-diameter vortex assembly is arranged at one end of the main shell and comprises a conical barrel, one end of the conical barrel is communicated with the annular cavity, and the other end of the conical barrel is communicated with the annular cavity. A guide turbofan is mounted at the other end; the pipeline type vortex dust screening device flows through the inner wall of the conical barrel and forms vortex flow under the guiding action of the multiple guide blades, so that a buffering section is formed, meanwhile, vortex airflow further enters the annular cavity and forms secondary buffering, and the dust screening effect is improved. According to the cyclone separator, the cyclone separator is arranged in the annular cavity, other large-mesh particle dust falls down and is collected in the vortex process of the annular cavity, relatively light small-particle dust is directly output, so that the required particle dust is screened, the whole structure is simple, maintenance is convenient, energy consumption is relatively low, meanwhile, the conical cylinder and the annular cavity jointly form secondary separation, and the separation efficiency is improved. And large particles can be better screened out.

The invention relates to the technical field of air purification, in particular to a negative oxygen ion dynamic air purification strategy and system.The negative oxygen ion dynamic air purification strategy comprises the following steps that on the basis of linkage of particulate matter concentration and multiple environmental parameters, influences of airflow, pressure, temperature and humidity and personnel flow on particulate matter distribution are analyzed, and formaldehyde and harmful gas parameter fluctuation trends are combined; pollution changes and equipment response grades are judged, the release path, frequency and power of the negative oxygen ion generator are adjusted, and ion release adjustment parameters are output. Data such as multi-element particulate matter concentration, airflow state, environmental pressure, temperature and humidity, personnel flow and the like cooperatively participate in monitoring and judgment, particulate matter grading characteristics are linked in real time through environmental dynamic factors, fluctuation trends of multiple pollutants in air are jointly calculated, high-risk change stages are actively recognized, purification response grades are dynamically output, and the purification effect is improved. The ion release direction and power are adjusted in an automatic linkage mode, the purification response changes along with space pollution hot spots, and diversified pollution distribution scenes are effectively covered.

The utility model belongs to the technical field of test boxes, and particularly relates to a high-low temperature test box with uniform heating. Comprising test cavities which are arranged in a test box at intervals left and right; a placement net plate is embedded in the bottom of the test cavity; the fans are arranged below the placing net plate in a bilateral symmetry manner; the air inlet end of the fan is communicated with the test cavity through the placing screen plate, and the air outlet end of the fan is communicated with the air duct cavity; the air duct cavities are distributed on the left side wall and the right side wall of the test cavity in a bilateral symmetry manner; a spoiler is vertically and obliquely arranged in the air duct cavity, and an air distribution plate is arranged at the air return end of the air duct cavity. According to the utility model, through the arrangement of the spoiler and the air distribution plate in the air duct cavity, high and low temperature airflow with uniform airflow distribution can be provided for the interior of the test cavity, so that the temperature rise rates of different areas are consistent, and the uniform heating effect during product testing is further improved.

The invention provides a propelling device and an aircraft. The propelling device comprises a motor, a movable blade assembly, a stationary blade frame assembly and a duct cylinder with an air duct, and the motor is installed in the air duct through the stationary blade frame assembly; the movable blade assembly is installed on a driving shaft of the motor, and the movable blade assembly is used for generating propulsive force when driven by the motor to rotate and guiding airflow to conduct air cooling heat dissipation on the motor. When the movable blade assemblies rotate, the aircraft can be jointly propelled to run through the pushing force generated by rotation of the movable blade assemblies and the pushing force generated by lift augmentation of the duct cylinders; the air flow entering the air duct can flow through the motor in an accelerated manner in the axial direction of the driving shaft of the motor, so that air-cooled heat dissipation of the motor is realized, and the heat dissipation efficiency of the motor is improved; and the structure is simple, and the weight is reduced.

The invention relates to the technical field of heat pump control, and discloses a defrosting method and device of a heat pump system and the heat pump system.The defrosting method comprises the steps that the temperature and humidity of gaps of a fin type heat exchanger are monitored in real time; and when the temperature is lower than or equal to the threshold value of the dynamic dew point temperature plus the safety margin and the humidity is higher than or equal to the threshold value, it is judged that the frosting prevention condition is met, the gap temperature is increased by adjusting the refrigerant bypass valve, the gap humidity is reduced by adjusting the airflow adjusting valve, and therefore frosting is actively prevented. And if the frost layer appears, short-time refrigeration interruption or low-power heating is started for defrosting according to the thickness of the frost layer or a pressure difference signal. And the formed ice layer is forcibly removed by switching the flow direction of the refrigerant and heating. By means of three-level linkage control, accurate defrosting in the whole process from prevention to removal is achieved, energy waste is effectively avoided, the defrosting efficiency and operation stability of the system are improved, and the user experience is improved.

The invention relates to the technical field of product life cycle management, in particular to an intelligent monitoring system and method for Liupu tea production, and the system comprises a disturbance sensing module, a layered structure module, an anomaly recognition module, a trend tracking module and a closed-loop linkage module. According to the method, airflow disturbance is introduced in a fermentation process stage, a direction hedging relationship is identified based on a temperature and humidity response difference value of nodes before and after the disturbance, an interference activation position is screened through a region hedging trend, three structural regions are divided by combining thickness, density and boundary response data, and a response lag region is identified to realize local focus point positioning. A structural reverse conduction area is screened out according to the direction change relation of collection nodes, an abnormal response area is recognized to achieve sudden change positioning, whether a spatial response mode changes suddenly or not is recognized through difference comparison between a disturbance result and a first response feature, and the perspectiveness and pertinence of abnormal response detection and the effectiveness of intervention effect evaluation are improved.

The invention discloses a motor self-cooling system and method, and relates to the technical field of motors, and the system comprises a heating assembly, a heat conduction assembly, and a skin. The other end of the heat conduction assembly is connected with the skin; the heating assembly conducts heat to the skin through the heat conduction assembly, and the skin achieves heat dissipation by means of airflow. The second heat pipes and the first heat pipes are arranged on the end faces of the stator teeth and the inner walls of the stator grooves respectively, heat in the motor is quickly conducted to the aircraft skin, and heat dissipation is completed by means of rotor wing downwash airflow and flight forward airflow on the surface of the skin. And the problem that the weight and power consumption of the system are increased due to the fact that a cooling fan or a liquid cooling pipeline is additionally arranged in a traditional cooling mode is avoided while efficient cooling and heat dissipation are achieved.

The embodiment of the invention provides an engine supercharging system and a vehicle, and relates to the technical field of vehicle manufacturing. The electronic supercharger is constructed into a two-stage supercharger, the electronic supercharger is provided with a first-stage compressed air flow channel and a second-stage compressed air flow channel, a turbine compressed air flow channel is formed in the turbocharger, and the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel are distributed in series. And the three-stage compressed air inlets are communicated with the air inlet to form three-stage compressed air inlet to the air inlet. According to the engine supercharging system provided by the embodiment of the invention, gas can be supercharged for three times through the first-stage compressed air flow channel, the second-stage compressed air flow channel and the turbine compressed air flow channel, so that the air compression ratio can be increased, the turbine hysteresis phenomenon is avoided, the air inlet pressure response speed is increased, and transient air supply to an engine is ensured; the operation stability and combustion efficiency of the engine are guaranteed, the fuel economy of the engine is improved, and the driving experience is improved.