60 results about "Icing" patented technology

The invention discloses a fan blade icing monitoring system and method, and relates to the technical field of wind power generation, and the system collects temperature, humidity and vibration signals in real time through a multi-sensor module installed on a fan blade, fuses multi-parameter data through an edge calculation unit, and calculates a blade icing risk factor # imgabs0 #. The risk factors are calculated by adopting a dynamic weighting model, and the icing state of the blade is accurately evaluated in combination with normalized characteristic values # imgabs1 #, # imgabs2 # and # imgabs3 #. And when the risk factor exceeds a set threshold value, the system triggers an alarm and transmits data to the cloud through the wireless communication module. The cloud platform predicts the future icing risk based on a long-short term memory (LSTM) neural network model in combination with historical data and real-time monitoring data, the accuracy and real-time performance of icing monitoring are improved, the method is suitable for operation in cold regions and high-altitude wind fields, and reliable guarantee is provided for safe and efficient operation of fans.

The invention provides a sea wave splashing icing simulation experiment research device, and belongs to the technical field of machinery and control, fluid mechanics, thermodynamics and meteorology. Comprising a contraction section, a spraying system installation opening, a pre-experiment section, an experiment section, an axial flow fan, a data acquisition unit, a flow adjusting device, a fixing structure, a component fixing support and a pressure sensor. Fan blades of the axial flow fan are specially customized by adopting a super-hydrophobic material and are provided with a low-temperature-resistant electric heating instrument. And performing image processing by adopting a thermal imager. The splash icing simulation experiment research device designed by the invention can simulate the icing phenomenon consistent with the marine environment and carry out scientific research, the service life of equipment is greatly prolonged through an anti-corrosion design, and a measurement scheme of brine icing at a low temperature is designed; and meanwhile, the ice coating amount can be quantitatively studied, the icing process can be captured in real time, and a solution is provided for the anti-icing and de-icing problems of the fan.

The invention provides a power transmission line icing early warning method, which comprises the steps of obtaining historical tension data and historical micrometeorological data of a power transmission line, screening out non-icing tension data from the historical tension data, screening out a plurality of strong correlation factors causing tension change of the power transmission line from the historical micrometeorological data, and carrying out early warning on icing of the power transmission line. The non-icing tension data and the strong correlation factors are used for fitting and creating a tension correction model, the non-icing tension data are substituted into the tension correction model to obtain a tension reference value, the real-time tension data are substituted into the tension correction model to obtain a tension correction value, and icing early warning is performed according to the tension reference value and the tension correction value. According to the power transmission line icing early warning method, the tension reference value is calculated according to the environmental factor change, so that the tension when the power transmission line is at the icing critical point is obtained, the accuracy of line icing detection is improved, and icing early warning can respond more quickly and timely.

The embodiment of the invention provides an intelligent energy-saving shipborne anti-icing electric heat tracing monitoring system and method, the monitoring system comprises a plurality of electric heat tracing loops, and each electric heat tracing loop is provided with a working state acquisition module; the power distribution system supplies power to each electric heat tracing loop and gives a unique identification code to each electric heat tracing loop; the data collecting and monitoring system comprises a PLC control unit, a sensor unit and an electronic chart system, and the PLC control unit is connected with the electric heat tracing control boxes, the sensor unit and the electronic chart system and used for collecting working state information, environment temperature information, wind speed and wind direction information and ship azimuth information of the electric heat tracing control boxes; and the working state of each electric heat tracing loop is controlled. According to the embodiment of the invention, the real-time dynamic monitoring of each electric heat tracing loop of the electric heat tracing system can be realized, the control convenience and the maintenance convenience of the electric heat tracing system are improved, and the service life of the electric heat tracing system and the electric heat tracing band is prolonged.

The invention relates to the technical field of equipment icing prevention, in particular to an icing prevention method and device for a bridge inhaul cable. The bridge inhaul cable comprises an inhaul cable steel wire, a steel wire sheath, a heat conduction coating and a plurality of resistance wires which are sequentially arranged from inside to outside, wherein the resistance wires are spirally laid on the heat conduction coating. The method comprises the steps of monitoring environment humidity, temperature of water drops in the environment, diameter of the water drops in the environment and surface temperature of the bridge cable; predicting the icing probability of the bridge inhaul cable according to the environment humidity and the surface temperature of the bridge inhaul cable, and predicting the icing form of the bridge inhaul cable according to the water drop temperature and the water drop diameter in the environment; the ice coating forms comprise glaze ice coating, rime ice coating, mixed rime ice coating and snow rime ice coating; under the condition that the predicted icing probability of the bridge inhaul cable exceeds a first preset value and the icing form of the bridge inhaul cable is glaze icing or mixed glaze icing, a resistance wire of the bridge inhaul cable is controlled to act according to a preset mode; the problem that the anti-icing effect is poor can be effectively avoided.

The utility model relates to the field of bridge floor early warning, in particular to a bridge floor icing early warning system, which comprises a microcontroller, and a measuring module, a rainfall monitoring module, a wireless communication module, a camera, a power supply module and an automatic spraying module which are electrically connected with the microcontroller, the measuring module comprises a temperature sensor, a humidity sensor, a wind speed measuring device and an air pressure measuring device, the automatic spraying module comprises a storage tank and a driving pump connected with the storage tank and is connected with a pipeline through the driving pump, the tail end of the pipeline is connected with a nozzle, and the pipeline is further provided with a control valve. The power supply module comprises a main power supply module and a standby power supply module, environment data and rainfall conditions are comprehensively monitored, the accuracy of icing early warning is improved, quick response can be achieved, an anti-freezing solution can be sprayed in advance, and the bridge deck icing risk is reduced.

This invention provides a mobile wind tunnel device capable of outputting uniform droplets, belonging to the field of icing and anti-icing technology for ships and marine structures. The device includes: a stabilizing rectangular cavity and a transitional circular-to-square cavity, the stabilizing rectangular cavity and the transitional circular-to-square cavity being connected. The circular opening of the transitional circular-to-square cavity is connected to a variable frequency fan. A honeycomb rectifier and multiple airfoil spray frames are installed inside the stabilizing rectangular cavity, with the honeycomb rectifier located between the variable frequency fan and the airfoil spray frames. This mobile wind tunnel achieves uniform droplet output, maintaining a stable airflow field through the honeycomb rectifier; by arranging heating tape in the water and air pipes inside the airfoil spray frames, the wind tunnel device can operate for extended periods in low-temperature environments without icing; and a control cabinet controls wind speed, water pressure, and air pressure to obtain icing data for the ship's superstructure under different wind speeds and droplet diameters.

The application provides a wind power short-term power prediction method, system and device affected by icing. First, weather data and icing data on the surface of a fan blade are acquired, the icing data is analyzed to obtain an icing type, then changes in the weather data are monitored and analyzed to obtain weather prediction data, and finally, the wind power short-term power is predicted in real time according to the icing type and the weather prediction data. The application can observe the icing structure characteristics from multiple directions, subdivide the icing structure, facilitate more detailed understanding of the type of the icing, better control the change trend of the icing, and make more reasonable prediction on the short-term power.

Method for monitoring low-temperature pipeline based on smart gas, including: obtaining gas data and pipeline data of each segment of a gas pipeline and weather data of a position of each segment of the gas pipeline; determining at least one target pipeline; determining icing data of the at least one target pipeline by processing the gas data, the pipeline data, and the weather data of the at least one target pipeline based on an icing prediction model, wherein the icing prediction model is a machine learning model; and generating a thawing instruction based on the icing data, and controlling a natural gas heating device to perform a thawing operation on the at least one target pipeline based on the thawing instruction.

The invention provides a gas turbine bleed air anti-icing system and an anti-icing method, and relates to the field of marine gas turbines.According to the method, energy conservation is utilized, the inlet temperature of a gas compressor is calculated in real time according to the air inflow of the gas turbine in the whole running process and under all working conditions, and the inlet humidity of the gas compressor is calculated according to the air humidity actually measured after a filter cartridge; and when the humidity of the inlet of the air compressor reaches 100% and the temperature of the inlet of the air compressor is lower than 0 DEG C, and the icing condition is met, an air-entraining anti-icing system is put into use. And through an energy equation, the lowest temperature at which the air compressor is not frozen is calculated, and then the needed hot air flow is obtained. According to the anti-icing system, the required amount of hot air is input by adjusting the opening degree of the electric valve. According to the method, the freezing condition of the inlet of the gas compressor under the full working conditions of the gas turbine can be accurately pre-warned, meanwhile, unnecessary efficiency reduction of the gas turbine caused by premature investment can be avoided, and the method has important significance on stable and efficient operation of the gas turbine.

The invention discloses a method and device for simulating the freezing process of a salt water film on the surface of a typical component of a polar ship, belongs to the technical field of salt water freezing process simulation, and particularly relates to simulation of the freezing process of the salt water film on the surface of the typical component of the polar ship. The problems that research on the existing brine freezing process is too simplified, and factors such as dynamic influence of salt migration (precipitation) on the freezing process and dynamic change of a contact angle caused by a hysteresis effect are not considered, so that simulation of the seawater droplet freezing process is not accurate enough are solved. The method comprises a solving step used for solving a momentum equation, an energy equation and a concentration equation according to input parameters of a saline film freezing numerical model to obtain output parameters of the saline film freezing numerical model. The method and the device for simulating the freezing process of the saline water film on the surface of the typical component of the polar ship are suitable for simulating the freezing process of the saline water film on the surface of the typical component of the polar ship.

The application discloses a ship gas turbine air inlet anti-icing device and an anti-icing method. The device is clamped and fixed on the gas turbine through a clamping type positioning connecting assembly, then hot air is uniformly blown in the rotating control cylinder through a hot air generating assembly and a blowing and heating assembly, the moisture and frost in the rotating control cylinder are dried and removed, and the temperature control effect of the air inlet of the ship gas turbine is improved, so that the air inlet of the gas turbine is prevented from icing.

The invention relates to the technical field of composite structure ship plate forming, in particular to a basalt fiber composite structure ship plate and forming equipment thereof, the basalt fiber composite structure ship plate comprises a surface protection layer, a middle functional layer, a core supporting layer and a bottom joining layer which are arranged from top to bottom, and the thickness ratios of all the layers are 15%, 30%, 40% and 15% in sequence; and the middle functional layer comprises a flexible heating layer which is electrified to heat. The outer side of the ship plate can be effectively prevented from being frozen when the ship sails in a severe cold area, so that the problems of ship weight increase, gravity center shift, stability reduction, sailing resistance increase, fuel consumption increase, ship structure damage, key equipment damage and the like caused by freezing are prevented, sailing risks are remarkably reduced, and the sailing efficiency is improved. Pollution and damage of accidents such as sinking and oil leakage to the marine environment are reduced, meanwhile, the living environment of sailors is improved, and cargo safety and normal operation of equipment on the ship are guaranteed.

The invention discloses an icing wind tunnel test device with an intelligent sensing function, and relates to the field of wind tunnel test equipment, the icing wind tunnel test device comprises a test wind tunnel and a return pipe located at the top of the test wind tunnel, two ends of the test wind tunnel and the return pipe are butted and communicated together, and an aircraft model is placed in the test wind tunnel through a sealing cover door. According to the device, supercooled water drops flow between the test wind tunnel and the return pipe through the airflow circulation unit, and airflow blown to the surface of the wind speed monitoring sensor can be hot airflow through a heating barrier plate in the protection unit; the surface of the wind speed monitoring sensor is prevented from being covered with frost, the temperature monitoring sensor and the humidity monitoring sensor are protected through the reducing ring, the contact amount with a supercooled water drop layer can be reduced, and frost on the surfaces of the temperature monitoring sensor and the humidity monitoring sensor can be removed under the action of the protection unit. Therefore, the accuracy of the monitoring data is ensured.

The invention relates to the technical field of port transportation ship loading equipment, and discloses a wharf ship loader all-weather automatic water feeding device which comprises a fixing frame, a ship loader is arranged on the upper side of the fixing frame, a transfer water tank is arranged on the front side of the interior of the ship loader, and the front side of the transfer water tank communicates with a conveying pipe. A main water tank is arranged on the right side of the front wall of the ship loader, the top end of the conveying pipe communicates with the main water tank, a water feeding mechanism is arranged on the inner side of the fixing frame and comprises a fire-fighting water pipe, the fire-fighting water pipe is installed on the rear side of the top end of the interior of the fixing frame, and the bottom of the fire-fighting water pipe communicates with a plurality of water feeding pipes. The electric telescopic rod drives the connecting pipe to rotate to the water feeding angle, water is injected into the transfer water tank through the water discharging opening and then conveyed to the main water tank through the submersible pump, dynamic balance and automatic control over the water feeding amount are achieved, and the problem that a traditional water tank is prone to icing in the low-temperature environment is effectively solved.

The invention relates to the technical field of marine natural gas hydrate exploitation, in particular to an ultra-long gravity heat pipe assisted natural gas hydrate exploitation system and method. The horizontal mining well extends to the NGH reservoir and is used for collecting natural gas; the horizontal injection well extends to the NGH reservoir and is used for injecting CO2; the directional well penetrates through the NGH reservoir and extends to the geothermal reservoir, and the section, located in the NGH reservoir, of the directional well is obliquely arranged; according to the flexible gravity assisted heat pipe, a heat-pressure-replacement three-in-one mining system is formed through the mining mode that heat exchange of the flexible gravity assisted heat pipe is combined with horizontal well pressure reduction and CO2 replacement, and the problems of reservoir cooling and secondary hydrate generation of a pressure reduction method, heat loss and interlayer pollution of a traditional heat injection method and slow dynamics and icing risks of a CO2 replacement method are solved in a targeted mode.

The invention discloses a quantitative prediction method for an icing load of a power transmission line, and the method comprises the following steps: collecting and fusing multi-source meteorological data: employing a dual-polarization radar to invert the particle size distribution of liquid drops through differential reflectivity, calculating the content of supercooled water through a differential phase, and obtaining an atmosphere liquid water path and a vertical temperature profile; according to the measured wind speed, wind direction and wind shear index, an environment parameter field is constructed, and icing early warning is triggered; conducting wire state parameter real-time sensing: monitoring conducting wire three-axis amplitude and galloping frequency, obtaining conducting wire surface temperature gradient, quantifying damping effect of conducting wire galloping on collision efficiency and providing boundary conditions for a thermodynamic equation; mixed phase state dynamic discrimination: constructing a phase state discrimination matrix based on a combination rule of a temperature interval and droplet particle size distribution; dynamic collision efficiency correction: calculating the dynamic collision efficiency by adopting an unsteady state collision formula; thermodynamics-fluid mechanics coupling calculation is carried out; and ice coating load accumulation and output: calculating the ice coating thickness, mass and mechanical load.

The invention relates to a water level measuring method and a water level measuring system. The water level measuring method comprises the following steps: step 1, acquiring a water level acquisition value through a water level sensor; 2, detecting a water level calibration signal, and after the water level calibration signal is obtained, performing water level calibration on the water level acquisition value obtained in the step 1 to obtain a calibrated water level acquisition value; 3, abnormal alarm detection is carried out on the calibrated water level collection value; 4, whether an alarm signal is obtained or not is judged, and if yes, a water level forbidding signal is generated; and if not, taking the calibrated water level acquisition value as the water level measurement value. The water level measuring method has the advantages that the water level measuring method can realize automatic timing calibration so as to realize automatic compensation and ensure that the measured water level continuously keeps high precision; in addition, abnormal alarm detection is performed on the calibrated water level acquisition value, so that the problem of false alarm caused by fluctuation caused by heavy storm waves or water level signal drifting caused by freezing of a low-temperature water surface in winter can be effectively avoided, and the accuracy of water level measurement is improved.

The application relates to the technical field of anti-icing and deicing, in particular to a self-adaptive anti-icing microclimate monitoring device which comprises an environmental data acquisition module, a control module, a heating module and a protective shell. The control module triggers the heating module to heat the protective shell based on the rainfall data, the light intensity data, the temperature data and the humidity data of the current environment collected by the environmental data acquisition module, can accurately identify icing weather, improves the judgment accuracy based on multiple influence factors, avoids invalid heating in a dry and cold environment, improves the heating efficiency, and effectively solves the icing failure problem of the microclimate monitoring device.

The application provides a bridge component anti-icing performance test method and equipment, and the system realizes multivariate simulation test on the bridge cable icing process through integration of an adjustable angle support, a test piece refrigeration bin, an ice water control module and an automatic spraying module. The method comprises the following steps: recording initial parameters of the test piece, establishing a simulated freezing rain environment, performing a cyclic spraying test, measuring icing state parameters, and calculating and evaluating a comprehensive anti-icing index based on an equivalent icing amount, an anti-icing delay coefficient and an environmental correction factor. The application can solve the technical problems of low test efficiency, high cost and lack of evaluation method in the prior art.

The invention discloses a coefficient measurement method, device, equipment and medium for a deformed liquid drop, and relates to the field of liquid drop measurement, and the method comprises the steps: inputting a current velocity vector and a current gas-liquid phase function of a fluid in an icing wind tunnel into a coupling relation among the velocity vector, an eddy vector and the gas-liquid phase function, the current vortex vector, the current velocity vector and the current gas-liquid phase function of the fluid are updated; determining an apparent thermal diffusion coefficient based on the updated current gas-liquid phase function, and updating the current temperature of the fluid in combination with the updated current velocity vector; in a cube computational domain predetermined based on the icing wind tunnel, the current resistance coefficient of the deformed liquid drop in the icing wind tunnel is measured according to the updated current velocity vector, and the current heat transfer coefficient of the deformed liquid drop is measured according to the updated current temperature, so that the current cooling state of the deformed liquid drop is determined. According to the invention, non-contact measurement of the resistance coefficient and the heat transfer coefficient of the deformed liquid drop is researched and developed independently, so that the cooling process of the deformed liquid drop is estimated more accurately.

The invention discloses an icing wind tunnel test section flow field multi-dimensional simulation method, device and equipment and a medium. The method comprises the following steps: S1, establishing a geometric model according to an actual structure of a test section; S2, carrying out grid division on the geometric model; s3, determining a control equation and selecting a physical model; S4, defining boundary conditions of a test section computational domain; s5, utilizing aero-engine performance analysis or test data to construct an aero-engine performance agent model to be coupled with the CFD solver; and S6, transmitting data between the CFD solver and the agent model by adopting a time step-by-step iteration mode, and carrying out coupling calculation to realize multi-dimensional simulation. According to the method, the aero-engine performance agent model is introduced into icing wind tunnel flow field simulation, a high-precision and efficient numerical simulation method is developed, and then prediction and analysis of an aero-engine icing meteorological condition test simulation result are achieved.

The invention relates to the technical field of icing precursor signal prediction, in particular to an icing signal analysis method and system based on a circulation index, integrates a modern meteorological analysis tool and a data processing technology, and aims to improve the prediction accuracy and response efficiency of an icing event. The method comprises the following steps: analyzing and calculating a key atmospheric circulation index by comprehensively utilizing fifth-generation global climate atmosphere reanalysis data provided by an European mid-term weather forecast center in combination with an actual icing record of a power transmission line in a specific region; comprise Siberia high-pressure strength indexes, East Asia groove strength indexes and the like, and the possibility and severity of icing can be accurately tracked and predicted through the support of the data; a lead-lag correlation analysis method is applied to further reveal the dynamic relationship between the icing and the atmospheric circulation index, and a scientific basis is provided for making effective icing response measures.

The present invention relates to a ship deck mooring system with heating and lighting functions, belonging to the technical field of ship deck mooring, wherein the system comprises: an information acquisition module, an information processing module, a heating module and a lighting module; the information acquisition module is used to collect mooring device information, a return signal sent by an aircraft, icing information of the deck area and light intensity information; the information processing module is used to determine the mooring area for the aircraft to return according to the return signal sent by the aircraft, the mooring device information, the icing information of the deck area and the light intensity information; the heating module is used to heat the mooring area for the aircraft to return according to the icing conditions obtained by the information acquisition module; the lighting module is used to illuminate the mooring area for the aircraft to return according to the light intensity information. The present invention solves the problem in the prior art that mooring work in polar environments is difficult to overcome the extreme cold and polar night environment, and is difficult to repair and replace.

The application provides a kind of intelligent icing weather cloud and mist parameter sensor, belongs to intelligent sensor technical field, the sensor includes fixed seat, the top of the fixed seat is equipped with conductive slip ring, the bolt connection between the conductive slip ring and fixed seat, the top of the conductive slip ring is equipped with pipeline structure, the inside of the pipeline structure is equipped with heating unit and sensing unit, the heating unit and sensing unit are all arranged on the inner wall surface of the pipeline structure.The application adopts the above-mentioned intelligent icing weather cloud and mist parameter sensor, solves the technical problems of insufficient measurement accuracy, reliability and data processing capability of existing sensors under complex weather conditions, can accurately measure weather cloud and mist parameters, and improves the accuracy and reliability of measurement by solving data through a neural network model, meets the demand of weather parameter measurement in the field of aerospace, etc.

The invention discloses a sea ice contour adaptive threshold segmentation and identification method based on a radar image. The method comprises the following steps: step 1, acquiring an image after accumulation of a shipborne X-band radar in continuous N periods; step 2, performing statistics on near sea clutters and far background noise based on the radar image of the first period, and adaptively determining a threshold lower limit of ice-water separation; 3, filtering the background in the radar image of the first period, and adaptively determining the upper threshold of ice-water separation based on morphological gradient statistics; step 4, performing global threshold segmentation and sea ice region extraction on the accumulated image according to the lower limit and the upper limit of the ice-water separation threshold to obtain sea ice contour information; and continuously repeating the steps to obtain sea ice contour information in real time. The method does not need training data, is high in calculation efficiency, can adapt to adaptive threshold segmentation and contour extraction of complex sea conditions, can operate in real time on a common industrial personal computer, and facilitates real-time sea ice recognition of ships in polar regions or seasonal icing sea areas.

The invention provides a gas-heat deicing method combined with blade icing detection, which comprises the following steps: analyzing time sequence data through an icing trend prediction model, and when an icing probability exceeds a preset threshold value, starting an ice layer thickness sensor array to obtain ice layer thickness data and generate a two-dimensional ice thickness distribution diagram; a directional distribution path of the hot air flow is generated and executed according to the two-dimensional ice thickness distribution diagram, and the flowing of the hot air is matched with the distribution path by adjusting the state of the air flow guide mechanism, so that the problem of non-uniform heat energy distribution caused by a fixed flow channel is solved; the problems that a gas heat deicing technology is low in heat conduction efficiency, poor in deicing effect and out-of-control in temperature under the severe weather condition are solved.

The present invention relates to the technical field of anti-icing performance test of aircraft, and discloses an icing wind tunnel spray equipment and a water supply pressure rapid response device and method thereof, comprising a gradient tube, a water tank, a control device and a plurality of spray assemblies, wherein the top of the gradient tube is higher than the bottom, and the top and bottom of the gradient tube are both provided with pressure sensing devices, and the cross-sectional area of ​​the gradient tube gradually decreases in the direction from the top to the bottom, the water tank is connected to the top of the gradient tube through a first pipeline, and the water tank is connected to the bottom of the gradient tube through a second pipeline, a switch valve and a booster pump are provided on the first pipeline to pump water in the water tank into the top of the gradient tube and make the water flow in the gradient tube, and a flow control valve is provided on the second pipeline; the control device is electrically connected to the booster pump and the two pressure sensing devices, and the spray assembly is arranged along the length direction of the gradient tube. In this way, the water supply pressure in the gradient tube can be adjusted before the spray assembly is turned on, and there is no invalid icing cloud.