168 results about "Particle deposition" patented technology

The invention discloses an engineering vehicle multi-area environment control system based on AI, and particularly relates to the technical field of engineering vehicle environment control. Humidity, electric field, air pressure and dust multi-mode sensing arrays are arranged in multiple areas of an engineering vehicle, dust particle deposition distribution time sequence characteristics are extracted, and a deposition acceleration coefficient and a humidity response coefficient are calculated; calculating a dust deposition risk coefficient, comparing the dust deposition risk coefficient with a preset value, and marking a region exceeding a threshold value as a region in a dust deposition abnormal state; analyzing a deposition trend based on a time sequence prediction model, inputting environmental parameters, and predicting a dust deposition velocity curve of each area of the engineering vehicle in a future set time; according to the method, the static electricity, humidity, air pressure and dust coupling deposition risk is assessed in a prospective mode, a collaborative intervention strategy is triggered through a dynamic early warning threshold function, the effect of rapidly restraining the risk is achieved, and the problem that traditional single-parameter monitoring lags behind, and ventilation efficiency is suddenly reduced due to the fact that a coupling mechanism cannot be captured is effectively solved.

The invention relates to the technical field of filtering devices, in particular to an ultrafine particle filtering device with an automatic deslagging function, which comprises a filtering tank and an internal conical filtering cylinder, the upper end of the filtering cylinder is connected with a liquid inlet pipe, the lower end of the filtering cylinder is communicated with a deslagging pipe, a rotating rod is arranged in the filtering cylinder, and a flow guide wheel is fixed at the top of the rotating rod; when liquid flows in, the flow guide wheel is driven to rotate, the rotating rod is driven to rotate, a first reciprocating spiral guide groove is formed in the outer wall of the rotating rod, and the flow pushing plate moves up and down along the guide groove to push the liquid to turn over, accelerate liquid drainage and avoid particle deposition. An eccentric wheel periodically pushes the lower end of the filter cartridge under the action of a limiting spring seat, a ball head and a limiting plate, so that the filter cartridge generates self-adaptive shaking, filter hole blockage is reduced, the lower end of a rotating rod drives an ejector rod to eject an overturning plate through a second reciprocating spiral guide groove, and deposited impurities are automatically discharged through a slag discharging pipe. According to the device, coordinated actions of plug flow disturbance, shaking and automatic deslagging can be realized by utilizing liquid flow, the filtering efficiency is remarkably improved, and manual cleaning is reduced.

The invention discloses a real-time early warning method and system for precise mold production and processing, and relates to the technical field of mold processing, and the method comprises the steps: when a residual pressure disturbance energy aggregation function F1 exceeds a disturbance threshold Q1, the system automatically switches to a trend tracking mode, further calculates and outputs a flow velocity abrupt change rate variation factor F2 and a composite migration pressure difference index F3, and then outputs a flow velocity abrupt change rate variation factor F3; through second-order flow velocity derivative analysis and particle-heat flow-pressure difference coupling behavior modeling, a complex blocking trend caused by particle deposition, heat stagnation accumulation and countercurrent disturbance is effectively identified. And calculating a blockage risk index Irisk by combining the two indexes, and setting a first blockage threshold W1 and a second blockage threshold W2 to realize automatic evaluation and classified response of different blockage levels. Compared with an existing mode of only judging a single parameter of pressure, the method can analyze a blockage evolution path in multiple dimensions and output a grading result, and the risk controllability and the strategy adjustment elasticity are enhanced.

The invention discloses a double-wall blade internal particle deposition characteristic rapid prediction method based on a reduced-order model. The method comprises the steps of model establishment, grid division, numerical simulation, data set establishment and establishment of a rapid prediction model combining POD and MLP. A deep learning method is combined with an internal channel of a cooling structure, high-dimensional data are converted into low-dimensional modal coefficients representing particle deposition characteristics based on POD decomposition for three parameters of film hole diameter, air blowing ratio and temperature ratio, an MLP deep neural network method is used for fitting the modal coefficients and related parameters, a rapid prediction model is established, and a rapid prediction result is obtained. And rapid analysis and evaluation of the particle deposition rule in the blade are realized. According to the method, the particle deposition condition in the double-wall turbine blade can be effectively predicted, and certain data support and guidance are provided for design and timely cleaning of a cooling channel in the blade.

The invention relates to the technical field of coating preparation, in particular to a spraying process of a compact yttrium oxide coating, which comprises the steps of pretreatment, powder activation, matrix surface modification, meltallizing spraying, cooling curing, de-shielding treatment and post-cleaning. Yttrium oxide powder is activated through low-temperature plasma, sand blasting parameters and a high velocity oxy-fuel spraying process are optimized, the porosity of the coating is remarkably reduced to 1.5% or below, and the hardness is improved to 500 HV0.3. Internal stress is reduced in a sectional cooling mode, and balance of coating performance and economical efficiency is achieved in combination with a parameter optimization algorithm based on particle deposition dynamics. The preparation method can meet the requirement of the high-end semiconductor manufacturing field on a high-performance protective coating, and solves the problem of high porosity of a traditional process.

The invention discloses a micro-channel cooling turbine blade inner cavity anti-deposition bionic structure design method and system, and relates to the field of turbine blade cooling of aero-engines. The problems of optimizing the wall cooling effect, flow resistance and calculation efficiency of the micro-channel structure are solved. The method comprises the steps that parameterization design is conducted on a bionic turbulent flow structure, and characteristic geometric parameters are obtained; establishing a micro-channel three-dimensional model of the bionic fish scale structure; screening the characteristic geometric parameters as design variables, and designing upper and lower intervals of the variables; taking heat exchange, pressure drop and particle deposition of the micro-channel as optimization targets, adjusting a design variable interval, and constructing a test sample space; performing numerical calculation by using the channel model to obtain a multi-objective optimization parameter value; establishing an agent model between the optimization parameter values and the geometric characteristic parameters; and optimizing by utilizing an agent model and a multi-objective optimization algorithm to obtain the optimal geometric parameters of the bionic fish scale turbulent flow structure, so that the efficient design of the micro-channel structure and the efficient utilization of the cold air consumption are realized.

The invention relates to the technical field of superconducting quantum computing, and discloses a hole structure metallization deposition method and system, a sacrificial layer is deposited on the surface of a silicon substrate, a hole structure with a preset depth-to-width ratio is etched on a to-be-processed substrate, a substrate with the hole structure is obtained, a first metal material is used for surface deposition of the substrate with the hole structure, and a metallization deposition layer is formed on the surface of the substrate with the hole structure. The preparation method comprises the following steps: forming a hole structure on a substrate, forming a metal induction layer on the surfaces of the substrate and the hole structure to obtain a substrate with the metal induction layer, performing magnetron sputtering on the substrate with the metal induction layer by using a second metal material, and applying a magnetic field around the substrate with the metal induction layer to form a metal film on the surface of the metal induction layer, and obtaining the substrate with the hole structure subjected to metallization deposition. The metal coverage in the holes can be improved by using a metal induction mode, and the deposition uniformity of particles in the holes can be ensured by combining a magnetic field applying mode, so that a deep hole scene can be well dealt with.

The invention provides a wind-break wall simulation analysis method and system for a photovoltaic power station in a desert area, and relates to the technical field of information. Wind speed gradient change data under a specific terrain are obtained by constructing a wind-sand movement simulation framework, a wind-sand movement track is simulated, and sand grain deposition distribution is analyzed; the influence of wind-break wall parameters on wind-sand flow blocking is optimized, a boundary division model of a cleaning area and a deposition area is constructed in combination with the area requirement of a photovoltaic panel cleaning area, the wind-break wall parameters are finely adjusted through an iterative optimization algorithm, and the influence of wind-sand flow dynamics on photovoltaic panel cleaning is analyzed. And finally, determining a wind-shield wall parameter configuration scheme, and generating a spatial distribution rule verification model of the wind-sand protection design. The method can effectively improve the protection effect of the photovoltaic panel in the desert area, prolong the cleaning period and improve the power generation efficiency.

The invention relates to the technical field of monitoring operation and maintenance, and discloses a method and system for monitoring operation and maintenance of equipment in a purification machine room, and the method comprises the steps: obtaining a surface deposition image of a related witness surface of a micropore array airflow component, analyzing the arrangement and construction information of a micropore array from the surface deposition image, and calculating the effective permeability of the micropore; positioning the center of the micropore according to the arrangement construction information, performing hole circumference radial statistics on the deposition intensity field, and generating a hole circumference jet flow deposition radial distribution map; within a limited microjet influence domain, calculating a microjet deposition diffusion attenuation factor based on the map; carrying out physical field coupling on the attenuation factor and the effective permeability of the micropore, analyzing a micropore flow field inertia enhancement coefficient and a macroscopic particle deposition mode weight, and further synthesizing an equipment operation comprehensive risk index; and finally, in response to the index and the permeability attenuation degree, generating an operation and maintenance strategy containing the surface clean recovery strength of the microporous panel and the airflow organization current-sharing correction amplitude.

The invention discloses a high-sulfur-content natural gas elbow sulfur particle deposition simulation experiment device and a testing method, and relates to the technical field of high-sulfur-content natural gas gathering and transportation pipeline sulfur particle dynamic deposition. The sulfur particle deposition simulation experiment device for the high-sulfur-content natural gas pipeline can simulate the dynamic deposition process of sulfur particles under various working conditions such as different flow rates of the sulfur particles, different flow rates of gas, different particle sizes of the sulfur particles, different pipeline pressures, different pipe bending angles and different pipe bending materials; through the two-stage recovery and two-stage purification scheme of the activated carbon adsorption device, the cloth bag dust collector and the secondary filter screen, the sulfur particle recovery rate is highly reliable, and the danger to the environment and testers is remarkably reduced; and through the coupling design of the micro vibrator and the sulfur particle injection device, the problem of blockage caused by sulfur particle agglomeration is effectively solved, and the manual intervention frequency is reduced.

The invention discloses a surface-enhanced Raman detection method based on laser-induced deposition, and belongs to the technical field of micro-nano particle deposition and detection. According to the method disclosed by the invention, the gold nanoparticles and the to-be-detected particles are driven to be enriched and precisely deposited to a target area by utilizing laser local heating, and Raman detection is synchronously carried out, so that high-sensitivity detection on trace substances is realized. According to the method, the problems of uneven particle deposition, uncontrollable signal enhancement and the like in the traditional surface enhanced Raman scattering substrate preparation are solved, meanwhile, the requirement of an extra laser source in a traditional detection method is avoided, and integration of laser deposition and detection is realized.

The present invention relates to a miniaturized spaceborne high-energy particle detection device and method based on a silicon detector module. The detection device comprises a silicon detector module, a trigger circuit, a differential amplifier circuit, an ADC sampling circuit, an FPGA processor, a data storage unit, a data communication interface, a power conversion circuit, and a sensor bias circuit. The silicon detector module comprises a silicon semiconductor detector and a front-end preprocessing circuit arranged on the same printed circuit board. The silicon semiconductor detector converts received space charged particles into charge signals reflecting particle deposition energy, and the front-end preprocessing circuit converts the charge signals into fast and slow forming pulse signals. The trigger converts the fast forming pulse signal into a trigger signal. The differential amplifier converts the slow forming pulse signal into a differential signal. The ADC collector converts the differential signal output by the differential amplifier into a digital signal. The FPGA processor processes the digital signal output by the ADC collector and converts it into space particle energy spectrum and flux information.

The invention discloses a soil particle directional deposition sample preparation method based on magnetic / electric field regulation and control, which comprises the following steps: mixing soil particles with a functional medium which is a magnetic nanoparticle dispersion liquid or a charged surfactant solution; enabling the surfaces of the soil particles to adsorb a functional medium through ultrasound or stirring to form temporarily magnetized or charged modified particles; injecting the modified particle suspension into a deposition tank, applying a magnetic field or an electric field, and regulating the long axis direction of the modified particles to a target angle; capturing a particle deposition image in real time through a monitoring system, processing the particle deposition image and calculating a particle deposition direction by utilizing an intelligent image analysis module, and feeding back and adjusting parameters of a magnetic field or an electric field according to a processing result of the intelligent image analysis module; and after deposition is completed, removing the external field to obtain the sample with the controllable deposition angle. The method can be used for accurately preparing soil particle directional deposition samples with different deposition angles, and is simple and convenient to operate and good in repeatability.

The invention discloses a particle deposition prevention shielding piece for coating equipment, which is arranged in a coating cavity and comprises an annular upper plate and an annular lower plate, and a labyrinth type airflow channel is formed between the upper plate and the lower plate through baffles which are staggered up and down and arranged at intervals; a gap of 0-2mm exists between the outer edge of the shielding piece and the inner wall of the film coating cavity, the cavity wall of the film coating cavity is grounded, and the gap is constructed into an electron depletion region mainly comprising positive charges; according to the utility model, particles entering by mistake are intercepted through the labyrinth type channel, particles escaping along the gap are blocked through the electron depletion region, the pollution frequency of the lower cavity can be greatly reduced, and thus the downtime and the maintenance cost of equipment are reduced; the labyrinth type airflow channel and the electron depletion area are both designed in a non-blocking mode, the labyrinth type airflow channel does not hinder normal conveying of reaction gas, the electron depletion area does not affect lifting of the wafer and the shielding piece, the anti-pollution function is achieved, meanwhile, the technological rhythm of existing coating equipment is completely adapted, and the main body structure of the equipment does not need to be changed.

An apparatus for extracting and utilizing noble gases from carbonate rock includes a container body. A gas-solid separation assembly defines filter pores, and a diameter of each filter pore is micrometer-scale. A mechanical crushing assembly is disposed at a bottom of the gas-solid separation assembly, and is configured to crush a carbonate-rock sample until particles each have a size on the order of micrometers or larger. The gas-solid separation assembly is elastic. The particle deposition device is disposed inside a crushing chamber. The particle deposition device includes connecting ropes and spheres. The connecting ropes are fixed to an inner wall of the crushing chamber, and the spheres are fixed to the connecting ropes. This apparatus not only avoids the generation of large quantities of impurity components, but also separates solid carbonate-rock sample particles from the noble gases, enabling effective extraction of the noble gases from the carbonate-rock sample for utilization.

The application discloses a kind of wind-driven generator lubricating oil on-line monitoring device, belong to lubricating oil detection technical field, including on-line monitor, on-line monitor includes monitoring shell, monitoring shell is set with multiple detection stations according to detection cavity mouth position, multiple on-line monitoring sensors for detecting the lubricating oil in detection cavity mouth are set on the monitoring shell at detection station position.The application obtains the lubricating oil circulating in system by directly, regularly sampling from main circulating pipeline, guarantees that sample can truly reflect the oil state of entire lubricating system, by built-in resistance type heating layer, can preheat lubricating oil sample to standard detection temperature, effectively eliminates the interference of oil temperature change to detection result caused by the harsh environment of fan, and using ultrasonic vibration source, oil sample is mixed, prevent particle deposition, ensure oil sample uniform, to improve the accuracy of each sensor detection data.

The invention provides a treatment device for reducing ABS particle deposition in oil slurry boiler flue gas. The treatment device comprises a connecting base, a plurality of connecting rods and a plurality of connecting rods, the shell is installed at an opening in the top of the connecting base, the reinforcing plate is longitudinally installed at the top of the shell, and inclined flow guide plates are installed on the two sides of the reinforcing plate; a supporting pipe is longitudinally arranged in the lower portion of the shell, the front end of the supporting pipe penetrates out of the front end face of the shell, a reinforcing beam is longitudinally and fixedly connected to the rear end of the supporting pipe, and the rear end of the reinforcing beam penetrates out of the rear end face of the shell. A rotating shaft is vertically and rotationally arranged at the rear end of the top of the supporting pipe, the top end of the rotating shaft is rotationally connected with the bottom face of the reinforcing plate, the rotating shaft is sleeved with a treatment mechanism used for reducing ABS particle deposition, and a driving assembly used for enabling the treatment mechanism to rotate is arranged in the supporting pipe. By means of the device, ABS deposition existing in oil slurry boiler flue gas is reduced, and the influence on oil slurry boiler flue gas flowing and heat exchange performance is reduced.

The invention provides a thermal barrier coating high temperature resistance CMAS sedimentability evaluation method and system, and the method comprises the steps: preparing CMAS simulation particles with uniform particle size distribution through a spray granulation technology; spraying the CMAS to the surface of a thermal barrier coating sample to be evaluated by using a thermal spraying technology, observing the deposition state of the CMAS on the surface of the sample through a scanning electron microscope, carrying out image analysis and statistics based on the deposition state, and calculating the area deposition rate of the CMAS; performing three-dimensional shape reconstruction on the CMAS simulation particle sediment on the surface of the sample through a laser confocal microscope, and calculating the volume deposition rate of the CMAS based on reconstruction data; and comparing the area and volume deposition rate of the thermal barrier coating to be evaluated with a reference thermal barrier coating serving as a benchmark, and quantitatively evaluating the high-temperature CMAS deposition resistance of the thermal barrier coating to be evaluated. According to the method, the deposition behavior of the high-temperature CMAS on the surface of the thermal barrier coating is evaluated and measured, and the anti-CMAS performance of the thermal barrier coating in a real service environment is evaluated more accurately.

The utility model discloses a kind of coating liquid constant-temperature storage containers, relate to coating liquid storage technical field, the coating liquid constant-temperature storage container, including support frame, the top surface of support frame is equipped with storage tank, the top surface of storage tank is equipped with the full component for assisting circulation constant temperature, the inner wall of storage tank is equipped with constant-temperature cavity, the inner wall of constant-temperature cavity is connected with the input pipe and output pipe for circulation constant temperature;The full component includes stepper motor, the top surface of storage tank is installed with stepper motor, the bottom end of stepper motor is equipped with transmission rod, the outer side surface of transmission rod is equipped with rotating plate, the lower portion of rotating plate is provided with bottom plate, the side of bottom plate is equipped with scraping plate for scraping coating liquid deposited by sedimentation.The utility model is through the ring array layout of scraping plate and the and of circle arc angle, fully covers storage tank bottom in the rotating process, effectively prevents coating liquid particle deposition, and the uniformity of mixing is promoted.

The application discloses a kind of transmission line pollution on-line monitoring method and system, it is related to power system state monitoring technical field, including obtaining the multispectral polarization scattering data of transmission line insulator surface, and constructs the three-dimensional digital twin of corresponding insulator;Based on the multispectral polarization scattering data, the component type and deposition intensity of insulator surface pollution are identified, and local pollution feature vector is generated;The local pollution feature vector is matched with the three-dimensional digital twin in space, and the surface contamination state parameter of corresponding position in the three-dimensional digital twin is updated;Combined with the updated surface contamination state parameter and weather forecast data, the equivalent salt density evolution curve of insulator in future preset period is calculated through particle deposition dynamics model;Based on the equivalent salt density evolution curve, the pollution risk level distribution map of transmission line level is generated, and on-line monitoring is completed.The application improves the accuracy and timeliness of transmission line insulation state evaluation.

The invention discloses a heat exchange surface particle deposition dynamic visualization simulation analysis method, and belongs to the field of heat exchange surface particle deposition simulation.The method comprises the steps that meshing is conducted on a heat exchange surface cold surface physical model, and a sedimentable area is determined; based on the simulated working condition, setting inlet particulate matter mass concentration and environmental parameters of the flow field area; setting a simulation time length, and in each time step, carrying out the following operations: calculating a local flow field parameter based on a control equation, and outputting a particle deposition rate and a particle denudation rate; obtaining a particle net deposition rate according to the particle deposition rate and the particle denudation rate; determining a volume source item according to the particle net deposition rate; and updating the dirt layer parameter, the flow field parameter, the sedimentable area and the compact deposition area according to the volume source item. The problem that an existing method cannot truly reflect the dynamic influence of the deposition layer on the airflow flowing characteristics is solved.

The invention discloses a particle surface coating behavior process simulation method and device, equipment and a medium, and the method comprises the steps: determining current airflow field information according to historical particle field information and historical airflow field information of a limited three-dimensional space at a previous moment; in the process of determining the current particle field information corresponding to the current cycle period according to the current airflow field information and the historical particle field information, simulating the surface adhesion behavior process of the reaction particles on the base material particles by determining at least one adhesion reaction particle corresponding to the base material particles; according to the method, deposition reaction particles are determined from at least one adhesion reaction particle based on the current adhesion duration of the at least one adhesion reaction particle, and the surface deposition behavior process of the reaction particles on substrate particles is simulated. And the accuracy and universality of particle deposition calculation are improved.

Apparatuses for substrate transfer are provided. A lift pin assembly can include a lift pin, a purge cylinder, and a lift pin guide. The lift pin guide is disposed adjacent the purge cylinder. The lift pin guide and the purge cylinder have a passage formed therethrough in which the lift pin is disposed. The purge cylinder includes one or more nozzles that direct the flow of gas radially inward into a portion of the passage disposed in the purge cylinder. The one or more nozzles are disposed radially outward from the lift pin. The purge cylinder reduces particle deposition on the substrate by preventing contact between the lift pin and the support assembly as the lift pin is in motion.

This application provides a simulation system and method for the AC characteristics of vacuum diodes based on a physical information neural network, belonging to the field of numerical simulation technology for electronic devices. The system includes a particle injection module, a particle deposition module, a Poisson equation solving module, an electric field calculation module, and a particle propulsion module. The particle injection module continuously injects electron particles; the particle deposition module maps particle information to a grid and calculates the electron density; the Poisson equation solving module uses a physical information neural network method to solve for the potential distribution based on the electron density; the electric field calculation module obtains the spatial electric field; and the particle propulsion module updates the particle velocity and position, forming a self-consistent coupled simulation. This application achieves continuous and smooth potential solutions through hard constraint embedding of boundary conditions, two-stage optimization, and loss scale adjustment mechanisms, reducing grid dependence and improving computational accuracy and efficiency. It is suitable for numerical simulation of vacuum electronic devices, electron beam systems, and space charge transport problems.

The application discloses a heat pipe condensing section anti-particle deposition system and relates to the fields of energy sources including nuclear energy and mechanical equipment, and solves the technical problem of particle deposition in a heat pipe and influence on heat exchange efficiency, and the technical scheme is as follows: the main part of the heat pipe is a condensing section, further comprising an evaporating section and an adiabatic section between the condensing section and the evaporating section; a wick is arranged in the pipe body, and a working medium is filled and circulated in the pipe body. A special structure is designed on the inner and outer surfaces of the condensing section, the flow rate of the fluid can be changed, the fluid is disturbed, the fine particles in the fluid collide, the deposition rate of the fine particles is reduced, and the heat transfer outside the pipe is enhanced. The application is suitable for heat pipe systems related to energy sources including mobile small reactors, and can be widely applied to the fields of space, deep sea, medical emergency energy and the like.

The invention relates to the technical field of shield tunnel construction, in particular to an underground structure compaction grouting permeation filtration diffusion time-varying analysis system and method.The method comprises the following steps that a grouting pressure and grouting time relation calculation model is built, and construction parameters are obtained; inputting the obtained construction parameters into a constructed grouting pressure and grouting time relation calculation model; the situation that the grouting pressure changes along with the grouting time and considering the deep percolation effect and the slurry viscosity time-varying characteristic at the same time, the situation that the grouting pressure changes along with the grouting time and considering the deep percolation effect independently and the situation that the grouting pressure changes along with the grouting time and considering the viscosity time-varying characteristic independently are obtained through calculation and output. According to the method, the pore blocking effect caused by particle deposition of the slurry in the soil body and the dynamic change of the slurry viscosity along with time are coupled, and the influence of the deep percolation effect and the time-varying property of the slurry viscosity on the permeation and diffusion of the slurry is considered at the same time.

The utility model discloses a sedimentation tank for recycling PCB waste etching liquid, and relates to the technical field of PCB waste etching liquid recycling, the sedimentation tank comprises a sedimentation tank body, one end of the bottom wall of the sedimentation tank body is provided with a stand column, the top end of the stand column is movably provided with a first hinge seat, the top of the first hinge seat is provided with a filter box, and the filter box is in a right trapezoid shape; waste liquid is filtered through the arranged turnable filtering box, the obliquely arranged filtering box facilitates natural flowing and filtering of the liquid, the multiple sets of filtering sieve plates with the sieve hole diameters gradually reduced from top to bottom are arranged in the filtering box, a multi-stage filtering structure is formed, copper particles with different diameters in the waste etching liquid are effectively intercepted, and the copper particles are effectively filtered. According to the device, copper particles are prevented from being deposited in a sedimentation tank, great convenience is provided for subsequent extraction and storage of waste liquid, the inclination angle of the filter box can be flexibly adjusted through the arranged movable storage sleeve and telescopic rod, and the device can meet the filtering requirements under different working conditions.

The invention discloses a WC-Co coating good in interface bonding and capable of inhibiting generation of hard and brittle harmful phases and a preparation technology of the WC-Co coating, and relates to the technical field of hard alloy coating materials.The WC-Co coating is prepared by designing powder components and structures and adopting an optimized solid-phase mechanical alloying technology, and the WC-Co powder containing elemental carbon of an elemental carbon coating structure is prepared; by combining and adopting optimized supersonic flame spraying process parameters (fuel gas pressure, fuel gas flow, oxygen pressure, oxygen flow, powder feeding gas pressure, powder feeding gas flow and spray gun moving speed), a non-oxidizing microenvironment in the particle deposition process is constructed in situ in real time, and decomposition, oxidation and decarburization of WC in the deposition process of good melting particles are inhibited. And a high-WC-volume-fraction coating organization structure which is good in combination and free of hard and brittle harmful phases is prepared, and the WC-Co coating high in toughness and wear resistance is obtained.

The invention discloses a method for optimizing a lead-bismuth venturi flow meter with ferroferric oxide particle deposition intervened by a magnetic field. The method comprises the following optimization steps: constructing a parameterized three-dimensional geometric model of the venturi flow meter; performing grid division on the model in computational fluid dynamics (CFD) software, and setting a multiphase flow model and a discrete phase model; compiling UDF for dynamically applying a virtual magnetic field in the flow field area of the tapered fillet section in the CFD solving process; the UDF is loaded, the virtual magnetic field serves as a source item to be coupled to a control equation of the fluid and the particle phase, and the influence of the virtual magnetic field on the particle motion trail is simulated; obtaining and analyzing the motion trail of the particles and the particle deposition amount of the fillet transition structure; based on an analysis result, adjusting the next one or more optimization variables and iteratively executing the steps until the particle deposition amount meets a preset requirement; according to the method, a virtual magnetic field which can be flexibly regulated and controlled is introduced by embedding a user-defined function, and an efficient simulation tool and a theoretical basis are provided for collaborative optimization of a flowmeter structure and a deposition suppression strategy.