49 results about "Icing" patented technology

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 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.

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.

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 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 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.

The utility model discloses an electric turbulence making system which comprises a turbulence making ship and is characterized in that the electric turbulence making system comprises a horizontal guide rod erected above the water surface of a canal along a set path, the horizontal guide rod is sleeved with a sliding block in a horizontal sliding mode, a connecting frame is fixedly arranged on the sliding block, and a lifting rod device is installed on the connecting frame; the lifting rod device is provided with a lifting sliding rod which is vertically arranged and can be lifted up and down, the turbulent flow making ship which is arranged in the direction of the horizontal guide rod is installed at the lower end of the lifting sliding rod, and a self-driven turbulent flow making device is installed on the turbulent flow making ship. The water channel can be well prevented from being frozen in winter or at cold night, and when the water channel is applied to the diversion channel, the water channel can be well prevented from being frozen in a local area, so that the water delivery efficiency is prevented from being affected, even water flow is prevented from overflowing, and engineering accidents are prevented from being caused.

The application relates to the technical field of icing prediction, in particular to an icing weather time series prediction method and system based on a space-time generation network. The method comprises the following steps: an airborne terminal receives in-situ data; the airborne terminal performs a light compression and packaging operation on the in-situ data to generate a light file, and sends the light file to a ground terminal; wherein the following steps are included: denoising processing is performed on the in-situ data to obtain denoised data; the denoised data is compressed by using a target compression scale to make a light file; the ground terminal receives non-in-situ data; the ground terminal predicts a first icing probability of an airplane in a future period of time by using the non-in-situ data and the light file through a time series prediction model; and the ground terminal sends the icing probability to the airborne terminal. The application can greatly reduce the data fusion difficulty of a model input end.

The utility model relates to an air-entraining anti-icing structure of a gas turbine, which relates to the field of marine gas turbines and adopts a pipeline type structure, a starting point of a pipeline is connected with an intermediate stage of a gas compressor of the gas turbine, and an end point of the pipeline is led to an air inlet of the gas compressor; the pipeline comprises an electrically operated valve air-entraining flow measuring section, an air-entraining pipe, an air-entraining injection branch pipe and a plurality of spiral nozzles which are arranged in sequence, and airflow with heat energy is dispersed and input into the air inlet pipeline of the air compressor. When the humidity of an inlet of a gas compressor reaches 100%, the temperature of the inlet of the gas compressor is lower than 0 DEG C and the condition of icing is met, an air entraining anti-icing structure needs to be put into the air entraining anti-icing structure, the opening degree of an electric valve is adjusted by adjusting an anti-icing system, and the amount of hot air needed by putting is adjusted, so that the situation that unnecessary efficiency reduction is caused by too early putting into the gas turbine is avoided.

This invention discloses a device and method for preventing freezing and corrosion of wharf pile foundations. It includes a berthing component for ship collision prevention installed on a pipe pile and a temperature-controlled module to prevent the pipe pile from freezing. The temperature-controlled module is installed in the splash zone and icing zone of the pipe pile, and the berthing component is installed at the edge of the wharf. The pipe pile also contains a power generation module and a battery to convert the kinetic energy of the berthing component under impact into electrical energy. The pipe pile also has a water spray module for removing contaminants from its outer wall. By setting up the berthing mechanism and power generation module, this invention converts the kinetic energy of the berthing mechanism under ship impact into electrical energy, which is stored in the battery and used by the temperature-controlled module. The temperature-controlled module can prevent the pipe pile from undergoing freeze-thaw cycles, improving the durability of the pipe pile. The water spray module sprays seawater from the piston cylinder during the conversion of kinetic energy into electrical energy, removing contaminants adhering to the outer wall of the pipe pile and preventing corrosion from contaminants.

The invention discloses an icebreaking device which comprises a shell, a base, a trigger module, an icebreaking mechanism and a reset mechanism. The trigger module comprises a one-way elastic expansion cavity and an icing expansion working medium; the icebreaking mechanism penetrates through the top opening of the shell and comprises a thorn body, a lifting plate and a vibration unit, and the lifting plate is located at the top of the cavity; the reset mechanism comprises an elastic piece and a heat transfer unit used for melting the frozen expansion working medium. The ice breaking thorns are directionally driven to move by utilizing volume expansion energy of water icing, and a self-circulation system of icing triggering, mechanical ice breaking and hot melting resetting is formed by combining piezoelectric vibration synergistic ice breaking and a shape memory alloy resetting mechanism triggered by hull waste heat, so that passive ice breaking operation with low external energy is realized, and the ice breaking efficiency is improved. The real-time performance and the coverage rate of the ice breaking response of the polar region ship key area are improved, the problems that an existing device is high in energy consumption, limited in deployment and complex in maintenance due to the fact that the existing device depends on external energy supply are solved, and the safety protection efficiency of the ship sailing in the ice region is remarkably improved.

The application discloses an infrared identification adaptive anti-freezing control system and method for a seawater vaporizer, and belongs to the technical field of anti-freezing control and temperature monitoring. The system comprises an infrared thermal imaging unit, which is used for collecting infrared thermal images of key parts of the seawater vaporizer; a temperature sensing unit, which is used for monitoring ambient temperature and seawater inlet temperature; a control unit, which is configured to perform low-temperature abnormal point analysis on an area prone to icing, judge a current icing risk level, and generate a corresponding anti-freezing control signal; an anti-freezing execution unit, which is used for receiving the anti-freezing control signal and executing anti-freezing measures on the seawater vaporizer; a data storage and communication unit, which is used for storing temperature data, anti-freezing control signals and a reference temperature field model, and realizing remote state monitoring and alarming; and an alarm unit, which is used for triggering sound-light alarming or sending an alarm signal to a remote monitoring center when the icing risk exceeds a safety threshold or the system itself fails.

The utility model provides an adjusting type switch electric ball valve, which relates to the technical field of electric ball valves and comprises a valve body, one end of the valve body is communicated with a connecting pipe, an actuating mechanism is fixedly mounted on the surface of the valve body, a ball body is mounted at the output end of the actuating mechanism, and a micro motor is fixedly mounted on the bottom surface of the actuating mechanism. And a worm is mounted at the output end of the micro motor. Through the design of the stirring blades, water flow at the ball body can be effectively stirred, the probability of water flow freezing is reduced, water flow in the valve body can be remarkably prevented from being frozen especially in low-temperature weather, the micro motor is used for driving the worm and the worm gear to rotate, the automatic stirring function is achieved, manual intervention is not needed, and operation is convenient. The operation convenience and efficiency are improved, through introduction of a stirring mechanism, continuous and stable operation of the valve body can be kept under the low-temperature condition, valve blockage or damage caused by freezing is avoided, and reliability is ensured.

The application discloses a direct-current ice melting self-adaptive control method for non-uniform icing, and comprises the following steps: identifying the icing shape characteristics of an icing section; calculating the ice melting control parameters of non-uniform icing according to the icing shape characteristics; and carrying out segmented control on ice melting within the ice melting control parameter range; the ice melting segmented control at least comprises an initial heating stage, a dynamic current ice melting stage and a safe cooling stage. The application establishes a special ice melting control method for non-uniform icing, solves the defects that the existing ice melting technology is long-term limited by the ideal uniform cylindrical hypothesis and cannot cope with actual complex micro-meteorological environments, and establishes a refined thermal field model considering the ice ridge heat dissipation enhancement effect and the non-uniform distribution of circumferential thermal resistance, so that the ice melting current calculation error is reduced.

The application belongs to the technical field of ship sea inlet structure design scheme, and particularly relates to an icebreaker sea inlet structure with ice melting and heat exchange functions, comprising a water outlet pipe base, an outer sleeve pipe, a jet pipe, a heat exchange pipeline and a grid plate frame; the water outlet pipe base is connected to the rear side of the water outlet pipe of the icebreaker, and the outer sleeve pipe is connected to the rear side of the water outlet pipe base; the jet pipe is arranged in the outer sleeve pipe; an annular drainage port is formed between the front side pipe opening of the jet pipe and the front side pipe opening of the outer sleeve pipe, the outer wall of the jet pipe and the inner wall of the outer sleeve pipe form a heat exchange channel with a rotary body structure, and the front half of the jet pipe is uniformly provided with a plurality of jet holes c; the heat exchange pipeline comprises heat exchange pipes uniformly arranged in the heat exchange channel; and the grid plate frame is buckled to the rear end pipe opening of the outer sleeve pipe. The application is mainly used for optimizing and improving the sea inlet structure, especially the water outlet structure, of various icebreakers and other ships that need to operate in a polar low temperature environment, and is used for improving the situation that the sea inlet is prone to icing and blocking in a low temperature environment.

The invention relates to a dual-mode water lubrication stern tube system of a polar icebreaker. The dual-mode water lubrication stern tube system is characterized in that a stern tube overhead water tank is arranged 2-4 m above a ship waterline; the pump set is arranged in the cabin and used for driving the stern tube water path to circulate; the water filter is arranged in the cabin and connected with the pump set; the heat exchanger is arranged in the cabin, is connected with the circulating water main pipe and is used for heating the cooling water at low temperature to eliminate the freezing risk; the cooling water is used for heat exchange and water temperature reduction at high temperature; the stern tube device is arranged at the tail of a ship shafting; the front sealing device is arranged at a cabin penetrating part of a ship shafting to prevent cooling water in a stern tube from entering a cabin; the rear sealing device is arranged at the tail part of the ship shafting to prevent cooling water in the stern tube from leaking to the outboard; the monitoring system is arranged in the cabin, monitors the temperature of the lubricating water entering the stern tube in real time, and provides a monitoring signal for the heat exchange control system; the lubricating water flow is monitored, and a leakage rate alarm signal is calculated and given; the lubricating water pressure is monitored; the control system is used for mode switching valve control and heat exchanger medium automatic selection.