31 results about "Evaporation rate" patented technology

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

The invention relates to the technical field of material performance testing, solves the technical problem that in the prior art, it is difficult to conduct multi-parameter heat and humidity performance testing on the same to-be-tested sample in a controllable testing environment, and provides a material heat and humidity performance testing method and system.The method comprises the steps that the to-be-tested sample is pretreated, and a first sample is obtained; placing the first sample in a first test environment, and supplying water to the first sample to obtain a first mass change curve; according to the first mass change curve, the capillary water absorption coefficient and the saturated water content are obtained through calculation; obtaining a second test environment according to the target climate parameters; and taking the first sample saturated by water absorption as a second sample, placing the second sample in a second test environment, and calculating to obtain an average evaporation rate and a cooling contribution value according to a second mass change curve and sample surface temperature data in the test process of the second sample. According to the invention, multi-parameter heat and humidity performance testing of the to-be-tested sample can be realized.

The present application relates to the technical field of low-temperature storage tank, in particular to a kind of evaporation rate dynamic monitoring method and system for static low-temperature storage tank, by obtaining the monitoring data of different liquid level in low-temperature storage tank, monitoring data includes steam concentration data, and airflow velocity data, air pressure data and liquid level monitoring data at different sampling positions;Analysis of monitoring data, determine the steam diffusion rate under different liquid level, and combine the change of liquid level data under different liquid level, determine the influence factor of airflow disturbance on evaporation rate under different liquid level, so as to correct the initial estimated evaporation rate under different liquid level based on the influence factor of airflow disturbance on evaporation rate.The present application corrects the initial estimated evaporation rate by analyzing the influence of airflow disturbance on evaporation rate under different liquid level, effectively improves the accuracy of low-temperature storage tank evaporation rate dynamic monitoring.

This invention provides a method for predicting the hazard range of oil fires on the water surface based on interface tracking coupled combustion dynamics. The method includes: using a conserved two-dimensional shallow water equation to describe oil film diffusion; spatial discretization using the finite volume method; mitigating frictional rigidity using the Strang splitting method; calculating flux using the Roe scheme; suppressing spurious flow using the Well-Balanced scheme; controlling the time step using CFL conditions; and outputting the oil film thickness hourly. A mass evaporation rate conversion model based on energy balance is constructed to transform the oil film thickness field into a mass evaporation rate field per unit area. The mass evaporation rate field is used as the bottom boundary source term of the fire dynamics model and coupled to the three-dimensional low Mach number Navier-Stokes equations through a volume source term, achieving real-time coupled simulation of oil film transport and fire spread. The combustion dynamics control equations, including the conservation of mass, momentum, energy, and components, are solved. Combined with the radiative transfer equations, the spatiotemporal distributions of the temperature field, thermal radiation flux, and flue gas concentration are calculated to achieve dynamic prediction of the hazard range of oil fires on the water surface.

The application relates to the technical field of air purification, and discloses a negative ion purifier ion yield drift self-calibration control method and system, which comprises the following steps: obtaining the cumulative running time of an air pump to determine a mechanical fatigue reference drift amount; constructing a theoretical evaporation model to solve a theoretical water evaporation rate and a theoretical conductivity reference slope; comparing the actual conductivity change slope to obtain a deviation index, on the basis of which water quality state binary determination is performed, and a water quality damping drift amount is generated; superimposing the mechanical fatigue reference drift amount and the water quality damping drift amount to obtain a total performance drift amount, generating a target driving instruction, and performing clamping output in combination with a running envelope; the application effectively eliminates the conductivity false high interference caused by natural evaporation through a thermodynamic model, realizes layered and accurate compensation of hardware aging and water pollution, maintains the constant ion yield, and avoids the overcompensation and air pump dry burning risk caused by misjudgment.

The present application relates to the technical field of heat dissipation. Disclosed are a wick, a vapor chamber and an electronic device. By means of lap joint coupling of different capillary structures, the wick can integrate the advantages of the different capillary structures, for example, a first capillary structure and a third capillary structure have a stronger capillary force, so as to meet the requirement for a liquid return rate. A second capillary structure has a higher porosity, so as to meet the requirement for an evaporation rate. Therefore, the wick can achieve a design with an optimal capillary force, the minimum liquid flow resistance and the minimum vapor flow resistance, such that a vapor chamber achieves optimal performance, thereby meeting the heat dissipation requirement of an electronic device.

The invention belongs to the technical field of industrial automatic control, and particularly relates to a particle swarm optimization-based multi-element spraying fluidized bed composite coating PID control method, which comprises the following steps of: S1, acquiring operating parameters of fluidized bed equipment and actually measured material temperature with a hysteresis characteristic, and constructing a state space model through an extended Kalman filtering algorithm, deducing and outputting non-lagging real material temperature and transient evaporation rate; s2, according to the real material temperature and the transient evaporation rate, in combination with the physical characteristics of the coating material, the evaporation lag coefficient and the transient thermal shock strength of the material are obtained through calculation; and S3, calculating a comprehensive dynamic penalty weight in parallel by using the material evaporation lag coefficient and the transient thermal shock strength, and reconstructing a target fitness function of the particle swarm algorithm by using the comprehensive dynamic penalty weight. According to the invention, thermal inertia lag of the temperature sensor is effectively overcome, and control decoupling and self-adaptive matching of multi-material characteristics are realized.

The invention relates to the technical field of air purification, and discloses a negative ion purifier ion yield drift self-calibration control method and system, and the method comprises the steps: obtaining the accumulated operation time of an air pump to determine a mechanical fatigue reference drift amount; constructing a theoretical evaporation model to solve a theoretical moisture evaporation rate and a theoretical conductivity reference slope, comparing the theoretical moisture evaporation rate and the theoretical conductivity reference slope with an actual conductivity change slope to obtain a deviation index, executing water quality state binary judgment according to the deviation index, and generating a water quality damping drift amount; superposing the mechanical fatigue reference drift distance and the water quality damping drift distance to obtain a total performance drift distance, generating a target driving instruction, and combining the target driving instruction with the operation envelope to execute clamping output; according to the method, conductivity virtual high interference caused by natural evaporation is effectively eliminated through the thermodynamic model, layered accurate compensation of hardware aging and water quality pollution is achieved, and the risk of excessive compensation and air pump dry burning caused by misjudgment is avoided while the constant ion yield is maintained.

This invention discloses a method and system for predicting heat leakage and detecting pressure rise characteristics of a liquid hydrogen container. The method involves establishing a three-dimensional thermal flow field model of the liquid hydrogen container; calculating the heat flux density at the gas-liquid interface based on the three-dimensional thermal flow field model to adjust the liquid hydrogen evaporation rate; obtaining the total heat leakage through finite element simulation and experimental data co-calibration; calculating the static evaporation rate based on the total heat leakage; establishing a nonlinear mapping model between the static evaporation rate and the pressure rise rate using response surface regression; monitoring the wall temperature distribution of the liquid hydrogen container in real time; calibrating the thermophysical parameters using a dynamic calibration algorithm via an LSTM neural network; and correcting the output results of the three-dimensional thermal flow field model. By establishing a three-dimensional thermal flow field model of the liquid hydrogen container, the nonlinear response relationship between the evaporation rate and the pressure rise rate of the liquid hydrogen container is clarified, and a cloud-edge collaborative detection system is constructed to accurately predict the heat leakage performance of the liquid hydrogen container and achieve efficient pressure rise rate detection.

The present invention provides a rapid detection method for the static evaporation rate of cryogenic adiabatic cylinders. Using the principle of reverse heat conduction, after emptying the cylinder to be tested, a heating device is inserted into the bottom of the inner liner and heated to a preset high-temperature constant value, which is lower than the vacuum baking temperature during the manufacture of the cylinder; keep the temperature constant until the heat flow conducts through the vacuum interlayer to the surface of the outer shell; measure the equilibrium temperature of the outer shell surface, and look up the preset qualified threshold comparison table according to the current ambient temperature or calculate the qualified threshold using the interpolation formula; if the temperature of the outer shell surface is lower than or equal to the qualified threshold, the cylinder is determined to be qualified. The present invention shortens the traditional detection cycle of more than 72 hours to about 3 hours, without consuming liquid nitrogen, and solves the problem of misjudgment caused by environmental fluctuations through the environmental temperature compensation algorithm, with extremely high detection efficiency and accuracy.

The invention discloses a method for measuring the evaporation rate of an exposed deck fuel cabin under complex full working conditions, which comprises the following steps: when the fuel cabin is in a full working condition state, respectively collecting the state data of the fuel cabin at the beginning of measurement and at the end of measurement through a sensor; according to the state data of the fuel cabin, an LNG liquid phase density value, a gasification latent heat value and an LNG steam specific heat value are calculated through an empirical formula; according to the fuel cabin state data and the LNG liquid phase density value, the evaporation gas flow is calculated; the evaporation rate is calculated and measured according to the fuel cabin state data, the evaporation gas flow and the LNG liquid phase density value; according to the boil-off gas flow, the gasification latent heat value and the LNG steam specific heat value, calculating through an energy conservation rule to obtain standard boil-off gas flow; and the measured evaporation rate is subjected to standardized correction through the standard evaporation gas flow and the LNG standard state data, and the standard evaporation rate of the full-working-condition fuel cabin is obtained. According to the method, the evaporation rate of the exposed deck fuel cabin can be accurately measured under complex full working conditions.

The present disclosure relates to a system for testing an atomization core (1), wherein the system comprises: a liquid supply device (2) configured to supply a liquid to an atomization core (1) via absorption; a power supply (3) configured to energise the atomization core (1) to evaporate liquid supplied to the atomization core (1); at least one sensor (4) configured to weigh the atomization core (1); and a control module (5) configured to receive a signal from the or each sensor (4) to determine an absorption rate of the atomization core (1) based on a determined rate of weight change of the atomization core (1) during the supply of liquid thereto. The control module (5) determines an evaporation rate of the atomization core (1) based on a determined rate of weight change of the atomization core (1) during energisation of the atomization core (1). The control module (5) compares the absorption rate and the evaporation rate to determine if a predetermined comparison requirement is met.

This invention discloses an intelligent detection system for the static evaporation rate of welded insulated gas cylinders based on the weighing method, belonging to the field of gas cylinder inspection technology. This invention effectively overcomes the core defects of traditional static evaporation rate detection, such as strong reliance on manual labor, susceptibility to data interference, and low reliability of results, by constructing an intelligent detection mechanism that integrates multi-dimensional feature extraction, dynamic threshold determination, and state evolution analysis. Addressing the inefficiency and operational errors caused by manual data recording, this invention achieves simultaneous automatic acquisition of mass, ambient temperature, and atmospheric pressure data. Based on the parameters of the inspected gas cylinder and the selected high-quality data, it automatically calculates the static evaporation rate and generates an inspection report, significantly reducing human intervention and improving detection efficiency and process traceability.

The application discloses a single-droplet evaporation and heat transfer rate measuring device and method, and relates to the technical field of micro-nanoparticle measurement. The device comprises an environment bin for generating a temperature and humidity environment meeting preset conditions; an aerosol droplet generating assembly for conveying a particle size aerosol airflow to the environment bin; a laser emitting assembly for respectively emitting first laser and second laser to the environment bin, so that the first laser and the second laser converge in the environment bin and generate an optical trap; the optical trap captures droplet particles so that the droplet particles are in a suspended state in the environment bin; a droplet evaporation observation assembly for observing particle size and droplet internal temperature distribution data of the droplet particles in the environment bin at different time points; and an evaporation rate and heat transfer efficiency calculating component for calculating the evaporation rate of the droplet particles according to the multiple particle sizes, and calculating the heat transfer efficiency of the droplet particles according to the multiple droplet internal temperature distribution data. The application realizes accurate measurement and calculation of the single-droplet evaporation rate and heat transfer efficiency.

The invention provides a low-temperature storage tank evaporation rate testing system and a testing method thereof. The low-temperature storage tank evaporation rate testing system comprises a liquid outlet pipeline, a temperature returning device, an exhaust pipeline, a testing pipeline, a first valve, an emptying pipeline and a testing assembly. One end of the liquid outlet pipeline is communicated with the low-temperature storage tank; the temperature returner is communicated with the other end of the liquid outlet pipeline; one end of the exhaust pipeline is communicated with the temperature returning device; one end of the test pipeline is communicated with the temperature return device, and the test pipeline and the exhaust pipeline are arranged in parallel; the first valve is communicated with the test pipeline; one end of the emptying pipeline is communicated with one end of the test pipeline and the exhaust pipeline far away from the temperature recuperator, and the other end is provided with an emptying port; the test assembly is used for detecting the state information of the gaseous medium in the test pipeline. According to the low-temperature storage tank evaporation rate testing system, the exhaust pipeline connected with the testing pipeline in parallel is arranged, so that air flow sequentially passes through the testing pipeline and the emptying pipeline instead of the testing pipeline when the low-temperature storage tank is emptied, and the phenomenon that the precision is reduced and even the low-temperature storage tank is damaged due to over-travel operation of a measuring instrument communicated with the testing pipeline is avoided.

The invention discloses a method for measuring the evaporation rate of a fuel cabin at a deck and an enclosure place, which comprises the following steps: when the fuel cabin is in a stable working condition state, respectively collecting the state data of the fuel cabin at the beginning and the end of measurement through a sensor; inquiring a material attribute manual according to the fuel cabin state data to obtain an LNG liquid phase density value and a gasification latent heat value; the evaporation gas flow is calculated according to the fuel cabin state data and the LNG liquid phase density value; the evaporation rate is calculated and measured according to the fuel cabin state data, the evaporation gas flow and the LNG liquid phase density value; the measured evaporation rate is subjected to standardized correction through the LNG standard state, and the standard evaporation rate of the exposed deck fuel cabin under the stable working condition is obtained; and the measured evaporation rate is subjected to standardized correction by combining the LNG standard state with the temperature data of the enclosure place, and the standard evaporation rate of the fuel cabin of the enclosure place under the stable working condition is obtained. The method can adapt to the evaporation rate measurement of the deck fuel cabins in different arrangement forms, and the accuracy and universality of the measurement result are effectively improved.

The application discloses a kind of high temperature gas cooled reactor liquid nitrogen daily evaporation rate test method and device, belong to high temperature gas cooled reactor nuclear safety guarantee technical field.First, the multi-stage valve isolation is executed to liquid nitrogen supply and storage system, and the isolation reliability is guaranteed by double confirmation mechanism of system state and mechanical locking;Subsequently, the vacuum degree of interlayer of storage tank is detected using nuclear level calibrated vacuum gauge, and repair is carried out if it does not satisfy preset threshold;When filling liquid nitrogen, intermittent injection is carried out using nuclear level cryogenic stainless steel hose, and bottom liquid discharge valve purging is matched, until the purity of exhaust gas reaches standard after filling to target liquid level;Finally, after the specified reference standing period containing eliminating initial gasification disturbance, daily evaporation rate is calculated according to liquid level change and geometric parameter model.The present application ensures the rigor of test and the repeatability of result through standardized process and multiple verification.

The invention belongs to the field of liquid hydrogen storage and transportation, and discloses a liquid hydrogen storage tank daily evaporation rate substitution test equivalent method and a related device. Static pressure distribution, gas-liquid two-phase heat and mass transfer data and wall surface temperature are calculated based on the fluid statics and mass energy conservation law; iterative simulation is carried out under the dual termination conditions that the gas phase temperature deviation is smaller than a threshold value and the total duration reaches the standard, and the simulated daily evaporation rate of the liquid nitrogen and the liquid hydrogen is output; an evaporation conversion coefficient is obtained through the ratio of the two values, and finally the actually measured liquid nitrogen evaporation rate is converted into a liquid hydrogen equivalent value. By the adoption of the method, the safety risk and the cost bottleneck of liquid hydrogen testing are avoided, errors caused by boiling point difference, thermal stratification and conversion coefficient distortion in a traditional liquid nitrogen substitution method are overcome, and safe, accurate, efficient and large-scale substitution testing of the static evaporation rate of the liquid hydrogen storage tank is achieved.

The invention discloses an unsteady-state droplet evaporation rate prediction method based on a physical information neural network, and relates to the technical field of fluid mechanics intelligent prediction, and the method comprises the following steps: carrying out the periodic rule analysis of the prediction of the unsteady-state droplet evaporation rate, carrying out the segmented recording of the pulsation process of the airflow velocity, the environment temperature and the combustion pressure, and carrying out the calculation of the pulsation process; and generating an evaporation change curve, and extracting the phase position and the energy amplitude sequence of each combustion period to form an evaporation period diagram. According to the method, dynamic time synchronization of the droplet evaporation rate is realized through periodic rule analysis and phase drift identification, time drift caused by error accumulation is eliminated, and prediction stability and physical consistency are improved; and energy and time response are coordinated through a time resonance list and a rhythm control scheme, numerical resonance is weakened, and it is ensured that the prediction result is kept continuous and accurate under the unstable combustion condition.

The invention discloses a minimum liquid flow measuring method. The method comprises the steps that liquid is injected into a capillary receiving tube; the liquid outlet pipe is connected with a detected instrument, liquid is continuously injected into the liquid outlet pipe through the detected instrument, micro-convex liquid is formed at the liquid outlet, and the micro-convex liquid does not make contact with the capillary receiving pipe; the evaporation rate E1 of the liquid in the capillary receiving tube is obtained based on the reading of the balance in the detected time period T1; the evaporation rate E2 of the micro-convex liquid formed at the liquid outlet of the liquid outlet pipe is obtained based on the evaporation rate E1; acquiring a pipeline leakage rate Qleak between the detected instrument and the liquid outlet pipe; and the flow Q of the detected instrument is obtained based on the morphological relation between the evaporation rate E2 and the micro-convex liquid in the detected time period T1 and the pipeline leakage rate Qleak. According to the method, firstly, dynamic balance is formed by utilizing the extrusion amount and evaporation amount of the micro-convex liquid under the extremely small flow, then the evaporation rate at the liquid receiving opening of the capillary receiving tube in the near space is taken as a reference, and finally, the mass loss of the liquid collecting container is weighed by the balance, so that a real-time flow value is provided.

The invention provides a medium Reynolds number viscoelastic liquid film fluctuation stability simulation method and device, and the method comprises the steps: carrying out the nondimensionalization processing of related parameters, and obtaining nondimensionalized parameters; based on the dimensionless parameters, performing dimensionless processing on each equation and condition; respectively substituting the scaled capillary number and Reynolds number into the x-direction momentum equation, the y-direction momentum equation and the normal stress balance condition which are subjected to dimensionless processing, and removing a small quantity by using magnitude analysis to obtain a second x-direction momentum equation, a second y-direction momentum equation and a second normal stress balance condition; a small amount is removed through magnitude analysis; obtaining a differential equation set; based on different mass jump flows, evaporation rates and capillary numbers, a curve of the disturbance instability growth rate changing along with the wave number and a neutral stability curve of the critical wave number changing along with the Reynolds number are obtained, and the influence rule of physical property and environmental parameters on the fluctuation stability of the viscoelastic liquid film with the medium Reynolds number is determined.

The present application belongs to the technical field of industrial automatic control, and particularly relates to a multi-element spraying fluidized bed composite coating PID control method based on a particle swarm algorithm, comprising the following steps: S1, obtaining the operating parameters of a fluidized bed device and the measured material temperature with hysteresis characteristics, constructing a state space model through an extended Kalman filtering algorithm, and deducing the real material temperature and transient evaporation rate without hysteresis; S2, according to the real material temperature and the transient evaporation rate, and in combination with the physical characteristics of the coating material, respectively calculating and obtaining the material evaporation hysteresis coefficient and the transient thermal shock strength; S3, using the material evaporation hysteresis coefficient and the transient thermal shock strength to calculate a comprehensive dynamic penalty weight in parallel, and using the comprehensive dynamic penalty weight to reconstruct the objective fitness function of the particle swarm algorithm. The present application effectively overcomes the thermal inertia hysteresis of the temperature sensor, and realizes the control decoupling and adaptive matching of multi-material characteristics.

This invention discloses a water inlet method and apparatus for a steam heating device, as well as a computer-storable medium. The method accurately estimates the capacity of the evaporated water based on the available work done by the evaporation plate, thereby determining the water inlet time and amount to replenish water consumption, ensuring that the plate always has water and preventing dry burning. Compared to existing methods that add water at fixed time intervals, this method estimates that a certain amount of water has evaporated before adding water, regardless of the evaporation rate. The timing of water inlet is more realistic and less prone to overflow and dry burning. Otherwise, adding water when the evaporation rate is slow can easily lead to overflow, and not adding water in time when the evaporation rate is fast can easily lead to dry burning for a period of time before adding water. This invention does not require a water level probe; it can estimate the amount of evaporated water based on the useful work done by the evaporation plate and replenish water in time.

The application discloses a method for brine atomization evaporation concentration, comprising the following steps: S1, determining the initial Baume degree and the material content of the original brine, and introducing the original brine into the original brine pool according to the planned evaporation rate; S2, calculating the corresponding phase diagram, the target saturation track and the target saturation point; S3, setting the initial atomized water droplet particle size, the water evaporation amount and the atomization time, and the real-time wind power data including the wind speed and the wind direction; S4, adjusting the atomized water droplet particle size and the atomization time in the atomization evaporation process, and ensuring that the saturation track of the brine in the phase diagram overlaps with the target saturation track; S5, repeatedly performing steps S2-S4 to precipitate different precipitated materials, and introducing the brine product into the next stage spray pool for continuous atomization evaporation; when the saturation point of the brine in the phase diagram coincides with the target saturation point, the evaporation is stopped and the static setting is performed. The application realizes comprehensive atomization coverage in the brine volume, compared with single-point atomization, can more fully utilize the wind power resources, accelerates the precipitation speed, and prevents the local accumulation phenomenon from occurring.

The application belongs to the technical field of lead-bismuth fast reactor supporting test, and particularly relates to a liquid lead-bismuth environment fission product evaporation behavior test system and method. The application comprises a reaction tank, a temperature control system, an atmosphere control system, a reactant storage system and a sampling analysis system; the reaction tank is used for bearing liquid lead-bismuth and fission products, the temperature control system is used for realizing accurate control of the temperature of the reaction tank; the atmosphere control system is used for providing a controllable gas phase environment, the reactant storage system is used for storing iodine and cesium iodide, quantitative injection of iodine and cesium iodide is realized by adjusting inert gas pressure and flow of an inert gas driven injection unit, and the sampling analysis system is used for realizing measurement of evaporation product composition and particle size distribution. The application realizes accurate regulation and control of temperature, pressure and gas phase environment through modular design, and can carry out saturated vapor partial pressure, evaporation rate and aerosol characteristic research of fission products.

The embodiment of the invention relates to the technical field of spray combustion, and particularly discloses a droplet evaporation characteristic numerical simulation method under a high-temperature turbulence condition. According to the embodiment of the invention, a single-droplet evaporation experiment is carried out; calculating physical property parameters of the liquid drops, and fitting a normalized evaporation rate expression; establishing a one-dimensional droplet evaporation model, constructing a conservation equation and boundary conditions, and generating expressions of Sherwood number (Sh) and Nusselt number (Nu); and calculating the surface evaporation rate and the heat transfer capacity of the liquid drop, and iteratively calculating the surface temperature of the liquid drop and the evolution of the diameter of the liquid drop. The method can establish a one-dimensional droplet evaporation model, iteratively calculate the mass evaporation rate and heat transfer capacity of the droplet surface through the Sh number and the Nu number, can well predict the evaporation characteristics of the droplet under different turbulence intensities, fuel oil types and environment temperatures, can be directly applied to CFD computational simulation, predicts the evaporation characteristics of the droplet under different working conditions, and has a good application prospect. And a theoretical basis is provided for establishing an effective spray combustion model.

The invention discloses an electrostatic minimal quantity lubrication and grinding process parameter collaborative optimization method, and relates to the technical field of grinding, and the method comprises the following steps: establishing a charged liquid phase infiltration capillary model according to the surface tension, contact angle and viscosity of charged cutting liquid drops in historical test data of electrostatic minimal quantity lubrication and grinding process parameter collaboration; establishing a particle size threshold prediction model according to the to-be-tested process parameters in the historical test data and the surface tension, the contact angle and the viscosity of the charged cutting fluid drops, and establishing a lubricating layer distribution prediction model according to the evaporation rate, the surface energy, the substrate property and the environment temperature characteristic data of the charged cutting fluid drops in the historical test data; and according to the charged liquid phase infiltration capillary tube model and the lubricating layer distribution prediction model, lubricating and cooling machining performance evaluation is conducted, and according to an obtained performance index evaluation total result, collaborative optimization regulation and control are conducted on static minimal quantity lubricating parameters and grinding process parameters. According to the invention, the parameter collaborative optimization efficiency can be improved.

The present disclosure relates to a system for testing an atomizing core wherein the system comprises: a liquid supply device configured to supply a liquid to the atomizing core via absorption; the energy supply device is configured to supply energy to the atomizing core so as to evaporate liquid supplied to the atomizing core; the at least one sensor is configured to weigh the atomizing core; and a control module configured to receive a signal from the or each sensor to determine an absorptivity of the atomizing core based on a weight change rate of the atomizing core determined during supply of the liquid to the atomizing core. The control module determines an evaporation rate of the atomizing core based on a weight change rate of the atomizing core determined during energizing of the atomizing core. The control module compares the absorption rate and the evaporation rate to determine whether a predetermined comparison requirement is met.

The application discloses a method for analyzing fuel atomization and evaporation characteristics of an evaporation pipe. First, input information for analyzing the characteristics of the evaporation pipe is analyzed and confirmed. Then, air flow velocity, fuel injection velocity, initial fuel particle size, fuel residence time and fuel average movement velocity in the evaporation pipe are calculated in sequence. Then, fuel evaporation rate is calculated by input information and in combination with the specific movement process of fuel in the evaporation pipe, and fuel movement and evaporation characteristics under a convection environment are analyzed. Finally, the relationship curve between outlet evaporation rate, fuel path and evaporation rate, outlet fuel particle size and the relationship curve between fuel path and fuel particle size are calculated, and fuel residual air coefficient is calculated, so as to analyze and evaluate the fuel atomization and evaporation characteristics of the evaporation pipe, to quickly realize the prediction of the working performance of the evaporation pipe, and to optimize the design scheme of the combustion chamber and realize the optimal design of the combustion chamber performance. Compared with the prior art, the method has small analysis resource demand, simple analysis process, short time consumption and good engineering practicability.

The invention discloses an evaporation pipe fuel oil atomization evaporation characteristic analysis method. The method comprises the steps that firstly, input information during evaporation pipe characteristic analysis is analyzed and confirmed; then the air velocity, the fuel injection velocity, the initial fuel particle size, the fuel residence time and the fuel average movement velocity in the evaporation pipe are calculated in sequence; then, the fuel evaporation rate is calculated by inputting information and combining the specific movement process of fuel in the evaporation pipe, and fuel movement evaporation characteristic analysis in the convection environment is completed; and finally, calculating a relation curve of the outlet evaporation rate, the fuel oil path and the evaporation rate, an outlet fuel oil particle size and a relation curve of the fuel oil path and the fuel oil particle size, and further calculating a fuel oil residual gas coefficient, thereby analyzing and evaluating the fuel oil atomization evaporation characteristics of the evaporation pipe so as to quickly realize prediction of the working performance of the evaporation pipe. Therefore, the design scheme of the combustion chamber can be optimized, and optimal design of the performance of the combustion chamber is achieved. Compared with the prior art, the analysis resource demand is small, the analysis process is simple, consumed time is short, and engineering practicability is facilitated.