15results about "Material crystallisation" patented technology

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.

The application discloses an experimental device for simulating solidification structure of continuous casting billets, which comprises a crystallization unit and a temperature monitoring unit. The crystallization unit can enclose a crystallization cavity. A cooling channel is arranged in the water-cooled wall of the crystallization unit. The cooling channel is connected with a cooling medium source. The cooling intensity of the slab in the continuous casting production is simulated by controlling the temperature and flow rate of the cooling medium. The test element of the temperature monitoring unit can monitor the temperature of the cooling medium in the crystallization cavity in real time, so as to accurately restore the solidification process of the continuous casting billets. The application also discloses an experimental method for simulating solidification structure of continuous casting billets. The target unit is selected, and the cooling medium flow rate parameter is set to restore the change process of the cooling intensity of the surface of the continuous casting billets with time, and the heat flow density of the solidification process is analyzed. After the solidification is completed, the simulation unit is obtained, and the solidification structure of the simulation unit is analyzed. The application can accurately simulate the change process of the heat flow density of the surface of the slab in the continuous casting process, and provides convenience for the solidification structure research of the continuous casting billets.

This invention relates to the field of fault early warning technology and discloses a fault early warning system for desalination in saline soil areas based on multi-source data. The system includes a preprocessing module, a prediction module, a working condition monitoring module, a display module, and an optional fault location module for extended functions. The system predicts crystallization risk by monitoring multi-source parameters such as temperature, flow rate, concentration, and pressure head within the desalination pipe, and issues anomaly warnings before a fault occurs. This overcomes the shortcomings of existing technologies that cannot effectively monitor crystallization risk within the desalination pipe, and is of great significance for ensuring the reliable operation of the desalination system and the long-term stability of saline soil subgrades.

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.

The invention provides an ice crystal particle collecting device and method for an ice crystal parameter calibration test. The device comprises a liquid nitrogen storage tank, a lubricating oil tank, a heat preservation refrigeration pipe, a lubricating oil collecting tank with ice crystals and a lubricating oil flow curtain. Wherein the lubricating oil tank provides lubricating oil for the heat preservation refrigeration pipe, and the liquid nitrogen storage tank provides liquid nitrogen for the heat preservation refrigeration pipe so as to cool the lubricating oil. Lubricating oil on the lubricating oil flow curtain spreads to form an oil film flowing from top to bottom, and ice crystal particles can be conveniently carried to flow. The ice-crystal-containing lubricating oil collecting box is used for collecting ice crystal particles, and the ice crystal particles are maintained not to melt with the help of liquid nitrogen. According to the method, the ice crystal particles are conveyed into the ice-crystal-containing lubricating oil collecting box by means of flowing lubricating oil with the temperature lower than the freezing point, it is ensured that the ice crystal particles are collected in the non-melting state, and therefore the morphology of the collected ice crystal particles can be observed conveniently. Meanwhile, some basic parameters can be obtained through a simple measurement mode, the concentration of the ice crystal cloud field can be calculated, and the difficulty and cost of ice crystal cloud field measurement are reduced.

A method for measuring the physical properties of liquid / solid electrolytes, belonging to the field of nonferrous metallurgy, specifically discloses a finite element analysis-assisted thermal analysis method to obtain the thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of liquid / solid electrolytes. The method includes the following steps: measuring the thermal analysis curve of a liquid molten salt sample during cooling using a sensor; simulating the behavior of the thermal analysis curve using a sensor physical model established by finite element analysis; and comparing and analyzing the numerical thermal analysis curve and the measured thermal analysis curve to obtain the corresponding liquid / solid thermal conductivity, primary crystallization temperature, electrolyte composition, and latent heat of phase transition of the molten salt system. The method described in this invention can rapidly obtain the thermal conductivity, primary crystallization temperature, molten salt composition, and latent heat of phase transition of solid / liquid inorganic salts and multi-component mixtures, enabling online measurement of relevant physical properties of liquid molten salts and solid electrolytes, and possesses practicality and economy.

The invention relates to a wind tunnel-based pipeline surface frosting analysis test system and method, relates to the technical field of wind tunnel tests, and aims to research the surface frosting phenomenon of a pipeline and obtain the characteristics of the pipeline surface frosting rate. According to the scheme, the first view field rectangle and the second view field rectangle of the outer surface of the internally tangent pipeline can be obtained in real time based on the first image collecting device, the second image collecting device, the third image collecting device and the fourth image collecting device; and obtaining an octagon of which each edge is tangent to the outer surface of the pipeline based on the first field-of-view rectangle and the second field-of-view rectangle, calculating the length of each edge in the octagon, and calculating the sectional area and volume of the pipeline based on the length of each edge in the octagon so as to meet the analysis requirement of frost on the surface of the pipeline. On the basis, the surface frosting phenomenon of the pipeline can be researched, and the surface frosting rate of the pipeline can be obtained.

This invention relates to a wind tunnel-based system and method for analyzing pipe surface frost, belonging to the field of wind tunnel testing technology, to study the frost phenomenon on pipe surfaces and obtain the characteristics of the frost rate. In this application, a first and second field-of-view rectangle tangent to the outer surface of the pipe can be acquired in real time using a first, second, third, and fourth image acquisition device. Based on the first and second field-of-view rectangles, an octagon with each side tangent to the outer surface of the pipe is obtained, and the length of each side of the octagon is calculated. Then, the cross-sectional area and volume of the pipe are calculated based on the length of each side of the octagon to meet the analysis needs of pipe surface frost. Based on this, the frost phenomenon on the pipe surface can be studied, and the frost rate of the pipe surface can be obtained.

The invention provides flow and particle size adjustable ice crystal cloud field construction equipment and method. The equipment comprises a liquid nitrogen supply mechanism, an ice crystal grinding mechanism, an ice crystal particle size screening mechanism and an ice crystal particle conveying mechanism. The liquid nitrogen supply mechanism is responsible for supplying low-temperature nitrogen to ensure that the whole system is in a low-temperature state; the ice crystal grinding mechanism is responsible for providing crushed ice; the ice crystal particle size screening mechanism is responsible for screening out ice crystals of which the particle sizes meet the requirements of an ice crystal cloud field from the crushed ice; the ice crystal particle conveying mechanism is responsible for blowing ice crystals to form a cloud field. Through cooperation of all the mechanisms, the ice crystal particles meeting the standard particle size (50-200 microns) are successfully obtained, the ice crystal particles meeting the MVD requirement of an ice crystal cloud field are accurately screened out, and the ice crystal particles are quantitatively and stably conveyed to a downstream test piece. Meanwhile, the particle size range and the supply amount of the ice crystals are adjustable, so that an ice crystal cloud field which meets the FAR-25 requirement and is controllable in concentration and particle size distribution can be formed.

The present application provides a urine processing method and a urine testing system. The method comprises processing urine to obtain urinary sediment and supernatant, performing crystallization processing on the supernatant and making analysis to obtain supernatant-related parameters, and making comprehensive analysis through combination of the supernatant-related parameters with urinary sediment-related parameters and urine dry chemistry-related parameters. The system comprises a urine processing module configured to process urine to obtain urinary sediment and supernatant, and a supernatant analysis module configured to perform crystallization processing on the supernatant and make analysis to obtain supernatant-related parameters, and to make comprehensive analysis through combination of the supernatant-related parameters with the urinary sediment-related parameters and the urine dry chemistry-related parameters.

The invention provides potassium sulfate and sodium sulfate crystallization detection equipment and a preferential crystallization method, and relates to the technical field of visual detection, the equipment comprises a mounting seat, a collection cup, a driving mechanism and a detection mechanism; a mounting cover is mounted at the top of the mounting base through bolts, a middle plate is fixedly arranged in the mounting cover, the driving mechanism comprises a motor which is mounted in the mounting base and located in the middle of the bottom of the middle plate, and a positioning frame is fixedly arranged in the mounting cover and located above the middle plate. According to the scheme, when the industrial camera rotates forwards relative to the collection cup, the industrial camera and the collection cup form differential motion, the field of view of the industrial camera scans each area in the collection cup, the problems that fixed detection can only shoot local areas, cup walls are blocked and other blind areas are solved, the accuracy of visual detection is further improved, and the detection efficiency is improved. Omni-directional imaging of a solid-liquid two-phase system in the cup can be achieved through cooperation of the two, crystals attached to the cup wall, crystals deposited at the bottom and suspended crystals can be clearly captured, and omni-directional detection is achieved.

The application discloses a liquid sample crystallization real-time detection method based on an intelligent sensor and relates to the technical field of intelligent sensors.The method comprises the following steps: step 1, a liquid sample is combined with a toluene-acetone adjustable ratio ternary dewaxing medium composed of toluene, acetone and solvent oil according to a predetermined volume ratio, and a uniform mixed system is formed in a constant-temperature liquid preparation environment; step 2, the mixed system is placed into a sedimentation device; step 3, after an external physical field is terminated, the mixed system is allowed to stand and settle, wavelet analysis is performed to extract a wax precipitation signal, and a wax precipitation end point is determined according to a preset threshold; step 4, a wax-containing layer is separated at the wax precipitation end point, and the wax content of the liquid sample is output; and step 5, supernatant obtained after the standing and settling is completed is taken and reacted in a water bath to form a yellow complex.The application has the advantages of a short detection period, high separation efficiency, accurate signal recognition and objective and automatic calculation process.

The application discloses an experimental device and method suitable for testing deposition of ammonium chloride particles on the wall of a tube bundle, wherein a test section is horizontally arranged, an outlet in an air heating system is connected with a horizontal inlet of the test section, a part of a solution atomization system is arranged inside a vertical inlet of the test section, heat exchange tubes in a heat exchange system are arranged in the middle of the test section, and an outlet of the test section is connected with a waste gas collector; and a shooting system is arranged towards a quartz glass tube of the test section and shoots. By adjusting different gas flow rates, humidity and water temperature, the application can observe the deposition process of crystalline particles on the wall of the heat exchange tubes, analyze the crystalline phase structure and deposition amount of the outer wall of the tube bundle, calculate the deposition layer thickness and deposition rate of the crystalline phase on the wall of the heat exchange tubes under different working conditions, and research the deposition of ammonium chloride crystalline particles in a petrochemical system.

The application relates to an evaluation method of demulsification performance of a cationic aromatic side chain demulsifier, which comprises the following steps: S1, synthesizing 4-bromobutyl triethylammonium bromide, 4-bromobutyl benzalkonium bromide and 4-bromobutyl quinoline bromide, and then synthesizing target products triethylamine-poly succinimide, N, N-dimethyl benzylamine-poly succinimide and quinoline-poly succinimide by chemical modification with poly succinimide as a main chain. The evaluation method of demulsification performance of the cationic aromatic side chain demulsifier, the synthesized TEA-PSI, BZK-PSI and QA-PSI demulsifiers can all be high-efficiency demulsification under different pH conditions, especially under acidic conditions (such as pH=2.0), the demulsification effect is particularly remarkable, and in actual application, the demulsification effect can be guaranteed even under harsh conditions, the demulsifier can not only effectively demulsify, but also can inhibit scale formation to a certain extent, so that the equipment corrosion is reduced, the service life of the equipment is prolonged, the production cost is reduced, the demulsifier has good biocompatibility and environmental friendliness.

The invention belongs to the field of food detection, and particularly relates to a meat ice crystal temperature point rapid measurement method and system based on low-field nuclear magnetic resonance. By optimizing test parameters of the low-field nuclear magnetic resonance spectrometer and combining accurate temperature control of the low-temperature constant-temperature module, continuous acquisition of gradient cooling signals from normal temperature to-80 DEG C can be realized only by directly putting a meat sample into a low-temperature-resistant sealed sample tube, and a moisture phase change inflection point is determined through a change curve of a transverse relaxation time T2 spectrum. The corresponding temperature is the ice crystal temperature point. The method has the advantages of no damage to samples in the detection process, no pollution, simple and easy operation, low instrument and equipment maintenance cost, good stability and high reliability, and can be used in field environments such as food processing workshops and refrigeration houses. The detection result is high in accuracy, the actual condition of the ice crystal point of the chicken can be accurately reflected, and a scientific basis is provided for optimization of a freezing process.