144 results about "Freezing point" patented technology

The invention relates to the technical field of mine freezing construction, in particular to a deep strong permeable fracture soft rock stratum vertical shaft frozen wall analysis method which comprises the steps that freezing points reaching the freezing temperature are collected and fitted into a freezing temperature field; dividing a freezing area according to the position of each freezing point in the freezing temperature field and the time point when the freezing point reaches the freezing temperature, and forming a freezing boundary according to the morphological characteristics of the freezing area; deriving position points at the frozen boundary according to the positions of the frozen boundary in a plurality of time periods, and checking the advancing trend of the frozen boundary according to the spacing distance and the spacing temperature gradient between the position points; based on the advancing trend of the current frozen boundary, setting a boundary condition under the advancing trend; dividing the freezing temperature field into a plurality of evaluation temperature surfaces by using the boundary condition of the current freezing boundary, iterating the freezing temperature field by using the evaluation temperature surfaces, and correcting the freezing boundary; the accuracy of freezing boundary identification is realized, and the safety and efficiency of freezing construction are improved.

The invention discloses a frozen soil thermal characteristic measuring device and method based on a thermal pulse method, and the method comprises the steps: heating a cylindrical heating probe through a heater at a constant power, detecting the temperature of the cylindrical heating probe through a first temperature probe, and uploading the temperature to a cloud through a transmission unit; meanwhile, the data recorder displays the temperature data of the second temperature probe and the first temperature probe in real time; keeping the temperature of the cylindrical heating probe constant; a frozen soil sample is heated by the cylindrical heating probe, a temperature penetration curve of the frozen soil sample is obtained, and then the volume diffusivity and the volume thermal conductivity of the frozen soil sample are obtained. According to the method, the highest space temperature can be effectively kept below the freezing point, so that the overall thermal performance of the quartz sand and the ice content is estimated, and the accuracy of estimating the overall thermal performance of the frozen soil sample in the cold region is improved.

The invention discloses a smoothie forming control method and system for different materials, a computer and a storage medium. The method comprises the steps that hardness gear data and an operation temperature value and an operation temperature change rate in an ice making cavity are obtained in real time; when the operating temperature change rate meets a freezing point triggering rule, obtaining a gear temperature threshold value and gear control data of a corresponding hardness gear according to the current operating temperature value, the hardness gear data, a preset freezing point type database and a type gear control library; when the operation temperature value is smaller than or equal to the gear temperature threshold value, heat preservation maintaining work is carried out, and timing is carried out; when the timing time meets the gear heat preservation adjusting rule, the gear temperature threshold value is updated, and heat preservation maintaining work is carried out; and when the gear temperature threshold value is smaller than or equal to the gear heat preservation maintaining threshold value, final heat preservation maintaining work is carried out according to the gear heat preservation maintaining threshold value, so that the current smoothie hardness is maintained. According to the invention, the material type can be automatically detected, corresponding smoothie forming control work can be carried out, and the smoothie tastes good.

The invention belongs to the field of petroleum geology, and particularly discloses a method for judging formation time of reservoir cracked asphalt by using a solid cracked asphalt-saline water two-phase inclusion. According to the method, the lithofacies characteristics of the fluid inclusion in the fluid inclusion slice are determined, the types of various fluid inclusion developed in the reservoir diagenetic minerals are determined according to the lithofacies characteristics, and the solid cracked asphalt-salt water two-phase inclusion is found in the various types of inclusion; the method comprises the following steps: carrying out microscopic uniform temperature test on an inclusion to obtain the uniform temperature and freezing point of the inclusion, carrying out PVT simulation on the fluid inclusion by using the uniform temperature and freezing point to obtain the capture temperature of the fluid inclusion, and then inputting the obtained capture temperature data to a burial history curve of the region, thereby finally accurately obtaining the formation time of the cracked asphalt. The method is simple and efficient, and a new thought and method are provided for limiting the forming period of the cracked asphalt.

The invention relates to the technical field of pour point and condensation point measurement, in particular to a pour point and condensation point precise measurement method, system and equipment. The method comprises the following steps of: determining a condensation tendency index according to a temperature data sequence fluctuation characteristic, a humidity data sequence change trend and a coupling difference characteristic between temperature and humidity data sequences; a control redundancy index is determined according to the continuous working time of the fan, the condensation tendency index and the numerical deviation characteristics between the power and humidity data sequences; according to the instantaneous change characteristics of adjacent data points in the humidity data sequence, the temperature data sequence and the power data sequence of the current time window, determining a collaborative benefit index; determining a comprehensive evaluation score according to the collaborative benefit index and the control redundancy index; controlling the fan to execute a corresponding operation strategy according to the comprehensive evaluation score and a preset mapping relation between the score and the operation strategy; the operation strategy is repeatedly adjusted until the pour point and the condensation point of the sample are determined, and therefore the fan power responds to environment changes in real time.

The invention relates to the technical field of chemistry, and particularly discloses a device and method for measuring freezing point decline, and the device comprises a hood shell, a control system and a measuring mechanism; the control system is installed on the right side of the exterior of the hood shell and electrically connected with the hood shell. The measuring mechanism is arranged below the hood shell and comprises a bottom shell, a track platform, a clamping mechanical arm, a test tube rack, a liquid injection part, a solid adding part, cooling bath manufacturing equipment, a measuring part, test tube cleaning and drying equipment, a first pump body, a second pump body and a sensor. According to the device for measuring freezing point drop and the measuring method, the freezing point is measured by adopting full-process automatic operation, the experimental environment and process are more stably controlled, the consistency of experimental operation is ensured, the measuring time of a single sample is shortened, and the overall experimental efficiency is improved.

The invention provides a control method, device and equipment for preparation of hypotonic nutritious food and a storage medium, and relates to the technical field of preparation control of nutritious products. The method comprises the following steps: obtaining a measured osmotic pressure corresponding to a mixed material of the to-be-prepared hypotonic nutritious food; the measured osmotic pressure is obtained by measuring the osmotic pressure of a material sample of the mixed material based on a freezing point method; inputting the measured osmotic pressure into the trained linear regression analysis model to obtain a predicted value of the peristalsis promotion rate; the model is obtained based on milk powder reconstituted fluid osmotic pressure and zebra fish intestine peristalsis promotion rate training. Determining a preparation process optimization scheme according to the predicted value of the peristalsis promotion rate and the early warning condition of the peristalsis promotion rate, and adjusting process parameters according to the preparation process optimization scheme; wherein the process parameters in the optimization scheme of the preparation process comprise one or more of the content range of different types of proteins, the ratio of exogenous calcium to milk-derived calcium, the homogenizing pressure and the spray drying temperature. According to the method, functional evaluation can be rapidly completed, and preparation parameters can be optimized.

The limo anti-freezing control system comprises a water tank body and a control device, the control device comprises a communication device, the communication device can obtain future temperature prediction of the position where the communication device is located from a network, and a doll type separation device is further arranged in the water tank body. And the water tank main body can be divided into a plurality of cavities in a doll form by the separating device. According to the limo anti-freezing control system and the anti-freezing water storage tank for the limo, freezing prevention can be conducted on a water source according to the remaining energy in the limo, heating is used for freezing prevention when the energy is sufficient, and heat preservation and freezing prevention are conducted on the water source in the water tank in a physical interlayer mode when the energy is insufficient; basic drinking water and flushing water in the motor home are ensured, and meanwhile the freezing point of the flushing water is reduced by adding salt into the flushing water.

A frozen confection comprising: 25 wt % to 40 wt % freezing point depressants having a number average molecular weight of 200 g mol−1 to 275 g mol−1; distilled monoglycerides in an amount of 0.04 wt % to 1 wt %; and soluble fibre in an amount of 1.4 wt % to 15 wt %.

The present invention belongs to the technical field of liquid freezing point detection equipment, and in particular, relates to a freezing point detection device for detecting the preparation of styrene true polymerization inhibitor, including a detector body, two cold traps are symmetrically provided on the top of the detector body, and a refrigeration box is provided on the inner side of the detector body, an outer test tube is inserted into the cold trap, and an inner test tube is inserted into the inner side of the outer test tube. The present invention is provided with a protective component, and before removing the detection probe, the pull rod can be pulled to drive the stirring ring to move upward into the detection probe, and as the stirring ring enters the detection probe, the rubber sleeve can drive the bottom edge of the rubber sleeve to be close to the inner wall of the side of the detection probe under the joint action of the first support rod and the second support rod, so that the stirring ring and the oil attached to its surface can be isolated in the detection probe by the rubber sleeve, thereby preventing the oil attached to the stirring ring from dripping randomly when the detection probe is removed.

The invention discloses a chlorine-free long-acting low-corrosion coal anti-freezing solution for railway transportation, which is mainly used for freezing prevention in the railway transportation process of coal, and belongs to the technical field of coal anti-freezing solutions. The coal anti-freezing solution is prepared from the following raw materials and components in percentage by mass: 20 to 27 percent of ethylene glycol, 17 to 24 percent of sodium formate, 4 to 5 percent of urea, 0.09 to 0.7 percent of thickening agent and the balance of water. Compared with a traditional anti-freezing solution, the coal anti-freezing solution prepared by the invention has the following advantages that the raw materials are cheap and easily available, and the preparation can be completed in a normal-temperature state; the corrosion to metal is small, and high-toxicity and environment-harmful substances are not contained; the anti-freezing agent is stable in property, moderate in viscosity and lasting in anti-freezing effect, and does not need to be supplemented during transportation and storage; the freezing point can reach-43 to-55 DEG C, and the problems of freezing in the coal transportation process in winter and corrosion of a traditional anti-freezing solution to the railway carriage wall can be effectively solved after the anti-freezing solution is sprayed on the surfaces of the coal and the carriage wall according to specific conditions.

The invention belongs to the technical field of preparation of cutting fluids for low-temperature cooling processing, and particularly relates to a preparation method of a physical and chemical dual-cooling environment-friendly cutting fluid. The cutting fluid comprises the following raw materials: 2-3 parts of base oil, 2-3 parts of a freezing point reducing mixing agent, 1-2 parts of a mixed amine absorbent, 1.5-2 parts of an antirust agent, 1.5-2 parts of an extreme pressure agent, 0.05-0.1 part of a preservative, 0.1-0.2 part of a defoaming agent, 1.3-2 parts of a nano reinforced phase, 1.3-2 parts of a dispersing agent and 122-185 parts of water. By adding the mixing agent for reducing the freezing point, the cutting fluid can still keep good flowability and permeability when used in a low-temperature environment. By adding the nano reinforced phase, the compression resistance and lubricating property of the cutting fluid are improved, the friction coefficient between cutters and chips is reduced, and the service life of the cutters is prolonged. Compared with the existing cutting fluid, the cutting fluid has excellent lubricating, cooling and cleaning effects, is outstanding in lubricating performance and cooling performance, and is suitable for being used in various cutting processing technologies.

The invention relates to a portland cement product for negative temperature and application thereof, in particular to application of a negative temperature product containing portland cement clinker and an anti-freezing agent in preparation of a negative temperature product capable of maintaining mechanical properties under a negative temperature condition. According to the present invention, the negative temperature environment applicability is strong, the temperature range of the conventional winter construction can be reached, the rapid strength development rate can be maintained in the negative temperature environment, the hydration heat release peak is advanced by 2-3 h, the construction requirement without the external heat source can be met, the hydration product mainly comprises ettringite and C-S-H, and the foundation is established for the cement product strength. The adopted mixing solution not only can prevent freezing, but also can accelerate coagulation. On one hand, the anti-freezing agent is added into the water, so that the vapor pressure of the water is changed, and the freezing point of the solution is reduced; and on the other hand, the anti-freezing agent contains a component for promoting hydration of the sulfur silicate cement, so that the sulfur silicate cement can be rapidly hydrated under a negative temperature condition, and the purposes of rapid setting and hardening and strength improvement of a cement product are achieved.

A fluid dispensing device and method for adjusting an amount of hygroscopic fluid dispensed to an analytical substrate by a fluid ejection cartridge. The fluid dispensing device includes a fluid droplet ejection head disposed on a fluid cartridge containing a hygroscopic fluid; and a hygroscopic fluid cooler configured to determine a freezing point of the hygroscopic fluid.

A storage and retrieval system includes a grid framework structure including a track system forming a grid. A load handling device is moveable on the track system. Stacks of storage containers are arranged in each of a plurality of storage columns located beneath the track system. The load handling device includes a lifting device arranged to lift one or more storage containers, each including a base wall and opposing sidewalls and end walls extending from the base wall to form a box-like structure having an opening, and a lid for closing the opening to define a cooling tote. At least one of the base wall, and / or opposing sidewalls and / or opposing end walls and / or the lid of the cooling tote includes a pocket housing a refrigerant with a freezing point in a range of −30° C. to 0° C. for storing frozen or chilled foods.

The invention belongs to the technical field of freeze concentration, and particularly relates to a method for improving the alcohol content of fermented wine. The alcohol content of the fermented wine is improved by adopting various methods of different physical principle freeze concentration methods such as solid-liquid separation (a solid-liquid relationship at a freezing point), a negative correlation relationship between a melting point and solute content (heat transferred by a frozen material is dissolved) and the like; or the fermented wine is frozen into a solid state, and in the negative pressure extraction process, the energy medium gas is introduced to dissolve the solid, so that the alcohol content of the fermented wine is improved. The method is suitable for improving the alcohol content and adjusting the flavor of the distilled liquor, including improving the alcohol content of the low-alcohol distilled liquor; or after the alcohol content of the distilled liquor is lowered, the alcohol content is improved through the method, and flavor adjustment and the like are achieved.

The application relates to the technical field of oil product detection, in particular to a full-automatic condensation point tester and a determination method, which comprises a base and a test tube, the top of the base is fixedly connected with a mounting seat, the surface of the base and the mounting seat is provided with a test bath mechanism and a supporting mechanism, the test bath mechanism enables the test tube placed in the test bath mechanism to be adjusted at multiple angles by rotating the test bath driven by a motor, replaces the original manual bolt structure, controls the rotating angle of the motor through a preset program, realizes accurate positioning, avoids the complicated operation of adjusting each hole in the original structure, prevents the angle from deviating during the test by mechanically clamping and locking the rotating shaft, and then the motor and the electric push rod replace manual adjustment, realize double locking effect, can prevent accidental displacement, and improve the accuracy and efficiency; the clamping mechanism enables four arc-shaped clamping plates to exert uniform radial pressure on the outer wall of the test tube through the first spring, the inner diameter of the clamping plate is designed to gradually increase from top to bottom, and different outer diameter test tubes are compatible.

The invention discloses a composition and a method for prolonging the shelf life of a liquid MDI product. The composition comprises (a) diphenylmethane diisocyanate (MDI), (b) at least one organophosphoric acid derivative with a structure shown in a formula (I), and (c) at least one metal carbonyl compound with a structure shown in a formula (II). The method provided by the invention can inhibit the formation of the MDI dimer, and especially prominently, can improve the solubility of the MDI dimer in a liquid MDI product, reduce the freezing point of the liquid MDI product, prolong the storage life of the liquid MDI product, and improve the storage and transportation stability and operation convenience of the liquid MDI product.

A coolant composition includes a mineral oil or a synthetic oil and a surfactant, in which a conductivity of the coolant composition is lower than 0.1 μS / cm, and the surfactant is a nonionic surfactant that is a fatty acid ester having a freezing point of lower than −15° C. and having a cyclic structure.

The utility model relates to the technical field of household appliances, and discloses a device for making smoothie and a refrigerator. The device for making smoothie comprises: a water storage assembly for storing cold water; and the pressure regulating assembly is communicated with the water storage assembly and is used for obtaining cold water from the water storage assembly under the condition that the smoothie needs to be made, and the cold water is made into the smoothie by adopting a pressure regulating mode. According to the method, the steps of freezing cold water into ice blocks and then mechanically breaking the ice blocks are not required to be executed, so that the process of making the smoothie is simplified, and the smoothie making efficiency is improved. Besides, the smoothie is an ice-water mixture obtained after cold water reaches the freezing point, so that the smoothie is more uniform in particle compared with smoothie produced by fragmenting ice blocks, and the quality of the prepared smoothie is improved.

A freezing point depressant (FPD) fluid distribution apparatus and ice protection system for a propeller blade, the apparatus comprising an upper section and a lower section, wherein the upper section is configured to distribute FPD fluid to the low pressure side of a propeller blade, and the lower section is configured to distribute FPD fluid to the high pressure side of a propeller blade, and wherein the upper and lower sections each comprise one or more FPD fluid chambers, the or each FPD fluid chamber comprising an associated fluid-permeable cover.

A substrate processing apparatus and a substrate processing method capable of suppressing dew condensation on a substrate are provided. The substrate processing apparatus includes: a stage configured to be rotatable; a plurality of holding portions provided on one side of the stage and holding a substrate; a liquid supply portion that supplies a liquid having a temperature higher than a freezing point to a surface of the substrate on an opposite side of the stage; a cooling portion that supplies a cooling gas to a space between the stage and the substrate; a moving portion that changes a distance between the stage and the substrate held by the plurality of holding portions; and a controller that controls the cooling portion and the moving portion. The controller performs a cooling process and a thawing process. In the cooling process, the distance is made a first distance by controlling the moving portion. In the thawing process, the distance is made a second distance longer than the first distance by controlling the moving portion.

The present application relates to the field of food processing technology, and provides a method and a device for purine reduction, and an equipment and an electronic equipment and a storage medium. The method for purine reduction includes the following steps: first cooling step: performing first cooling treatment on a food material to be treated at a first preset cooling rate to reduce a temperature of the food material to be treated to a temperature below a freezing point. By performing first cooling treatment on a food material to be treated at a first preset cooling rate to reduce a temperature of the food material to be treated to a temperature below a freezing point, the activity of ATP-degrading enzyme in the food material to be treated can be rapidly inhibited, which can quickly and effectively inhibit the generation of hypoxanthine, thereby reducing the generation of hypoxanthine, reducing the risk of hyperuricemia and gout, and having little effect on the taste and quality of the food material.

The invention relates to the technical field of oil production engineering, in particular to an oil well shaft watering temperature raising parameter determination method, and aims to solve the technical problem that the watering amount and the watering temperature cannot be determined by a watering temperature raising process in the related technology. The oil well shaft watering temperature raising parameter determination method comprises the following steps that S1, a relation function corresponding to the wellhead output liquid temperature and the liquid production capacity of an oil well in different seasons is found out; s2, according to the liquid production capacity Q1 of the target oil well, a corresponding relation function is selected, and the original output liquid temperature T1 of the target oil well is calculated; and S3, the temperature T0 of new output liquid of the target oil well is set, the required watering amount Q2 and watering temperature T2 of the target oil well are calculated according to the energy conservation calculation formula Q2T2 = k (Q1 + Q2) T0-Q1T1, T0 is larger than the crude oil freezing point of the target oil well, and the coefficient k is 0.7-1. According to production basic data of an oil well, the watering amount and the watering temperature needed by shaft watering temperature increasing are obtained through simulation calculation, and data guidance is provided for the shaft watering process.

To provide a household refrigerator that can store food while suppressing chilling damage and maintaining its quality. [Solution] In this embodiment, the household refrigerator 1 has a control unit 45 that repeatedly performs a refrigeration cooling operation to cool the refrigerated storage compartment and a freezing cooling operation to cool the freezer compartment, while repeatedly performing a cooling and preservation operation to adjust the refrigerated storage compartment to a first temperature above the freezing point, and a recovery operation to adjust the refrigerated storage compartment to a second temperature higher than the first temperature to recover from low-temperature damage to food. The control unit performs such a procedure that the total time for performing one cooling and preservation operation and one recovery operation is longer than the total time for performing one refrigeration cooling operation and one freezing cooling operation.

A chemical composition for increasing density of liquids such as water for sports, bathing, leisure and / or rehabilitation uses includes in weight percentage: potassium citrate, between 1.2% and 63%; sodium citrate, between 1.5% and 66%; potassium chloride, between 2.2% and 97%; potassium ascorbate, between 5.1% and 94%; and sodium benzoate, between 1.03% and 22%. The components are water-soluble salts, environmentally friendly, which are common food additives, what makes them safety for humans. The composition can be added to water of swimming pools, ponds, tanks, rafts, bathtubs or artificial beaches, where it increases density, increasing floatability and facilitating the practice of sports, swimming, bathing or other leisure activities. It also helps to prevent development of microorganisms or other polluting substances and to diminish freezing point of the water where it has been added.

The invention relates to an icing detection method of an ice crusher, which is applied to a controller of the ice crusher, and the method comprises the following steps: in a stable observation time period of a refrigeration stage, obtaining a current temperature of a mixture and a current stress signal of a stirring part in a stirring process; determining a target freezing point corresponding to the mixture, and setting a dynamic detection temperature window based on the target freezing point; when the current temperature falls into the dynamic detection temperature window, performing multi-frequency energy analysis on the current stress signal to obtain a multi-frequency energy value; determining a normal stress fluctuation value corresponding to the stress response of the stirring part at the current temperature; and if the multi-frequency energy value exceeds the preset multiple of the normal stress fluctuation value, it is judged that the ice crystal adhesion risk exists, and the refrigeration system is controlled to execute intervention operation. According to the invention, the abnormal icing condition of the ice crusher can be identified.

Methods for separating a first material flow containing a dissolved substance are already known in which said first material flow is divided into a second material flow and a third material flow such that the third material flow has an increased concentration of the dissolved substance compared to the second material flow. In such methods, this is achieved by means of a freezing process in which the first material flow is pre-cooled in a heat exchanger and solidified in a heat pump, whereupon the ice is mechanically crushed and centrifuged, allowing the extraction of a liquid fraction containing the dissolved substance which does not integrate into the ice lattice. In such a method, the invention provides a second heat pump which only takes over the heat transfer in the region of the freezing point, meaning that its efficiency is particularly high due to the substantially constant temperature on both sides.

This method for producing a frozen dessert has a freezing step in which a raw material liquid containing live bifidobacteria is frozen to obtain a partially frozen product. In order to suppress death of bifidobacteria, the freezing temperature in the freezing step is set to be lower than or equal to the freezing point of the raw material liquid, and the absolute value of the difference between the freezing point of the raw material liquid and the freezing temperature is set to be less than or equal to 2.0°C.

Various aspects of this patent document relate to liquid compositions comprising cannabidiol, which have either freezing points or glass-liquid transition temperatures less than the melting point of pure cannabidiol.