289 results about "Mixed phase" patented technology

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2200MPa-grade bridge cable and a manufacturing method of the high-strength complex-phase hot-rolled wire rod. After C-Si-Mn-Cr chemical components are rolled and spun into a wire rod, the wire rod is subjected to online molten salt critical quenching isothermal treatment, the wire rod is controlled to be subjected to front-section treatment and cooled at a cooling speed of greater than or equal to 38 DEG C / s, and enters a pearlite and martensite mixed phase region from an austenite state; the method comprises the following steps: firstly, carrying out heat treatment on austenite to promote transformation of part of austenite to sorbite and martensite, then carrying out post-treatment, reducing the circulation volume of molten salt, promoting transformation of austenite to pearlite, carrying out isothermal tempering, and finally carrying out roller way slow cooling, so as to prepare a hot-rolled wire rod of which the microstructure comprises a complex phase structure consisting of tempered pearlite, tempered sorbite, ferrite and tempered martensite, the composition system can be simplified, the deteriorated structure can be effectively controlled, complex-phase structure regulation and control and high-strength plastic performance matching are achieved, the tensile strength is 1568-1603 MPa, the percentage reduction of area is 29%-34%, and stable manufacturing of the bridge cable is facilitated.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 1960MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod. After high-carbon components containing trace B are designed, rolled and spun into a wire rod, online molten salt rapid quenching treatment is carried out, and the wire rod is firstly subjected to front-section molten salt treatment, so that the wire rod is cooled at the cooling speed of greater than or equal to 36 DEG C / s and enters a bainite and pearlite mixed phase region from an austenite state; the method comprises the following steps: quenching a steel wire rod to form a structure mainly comprising quenched bainite and a sorbite structure, carrying out rear-section molten salt treatment on the steel wire rod, increasing the molten salt temperature, promoting isothermal tempering of the quenched bainite and the sorbite structure, and carrying out roller way slow cooling to prepare the hot-rolled steel wire rod of which the microscopic structure comprises a complex-phase structure consisting of tempered sorbite, tempered bainite and ferrite, the composition system can be simplified, the strength and plasticity matching and rapid production of the wire rod are considered, the tensile strength is 1330-1380 MPa, the percentage reduction of area is 35%-40%, and the wire breaking risk in the wire drawing and twisting process of the stranded wire steel can be reduced.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2060MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod. After high-carbon chemical components containing trace V are designed, rolled and spun into a wire rod, the wire rod is cooled at a cooling speed of more than or equal to 33 DEG C / s through on-line molten salt semi-quenching treatment, enters a bainite and pearlite mixed phase region from an austenite state, and is subjected to hot rolling and hot rolling at a cooling speed of more than or equal to 33 DEG C / s; the method comprises the following steps: quenching bainite and a sorbite structure to form a structure mainly comprising the quenched bainite and the sorbite structure, then carrying out isothermal tempering, and finally carrying out roller way slow cooling to prepare the hot-rolled wire rod of which the microscopic structure comprises a complex-phase structure consisting of tempered sorbite and tempered bainite, so that a component system can be simplified, the material cost can be reduced, network carbides can be effectively controlled, and meanwhile, the complex-phase structure can be regulated and controlled; the high strength and plasticity of the wire rod are matched, the tensile strength is 1390-1440 MPa, the percentage reduction of area is 32%-37%, and the steel wire rod is used for manufacturing 2060 MPa grade stranded wires and other application fields and is beneficial to downstream wire drawing and twisting processing.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2230 MPa grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod. After a Nb-containing high-carbon component is used for rolling and spinning at a spinning temperature to form a wire rod, online molten salt mixing quenching isothermal treatment is carried out, so that the wire rod is firstly subjected to front-section molten salt treatment and is cooled at a cooling speed of more than or equal to 35 DEG C / s, and enters a bainite and pearlite mixed phase region from an austenite state; the method comprises the following steps: firstly, carrying out heat treatment on austenite to promote part of austenite to be converted into bainite and sorbite, then carrying out later-section molten salt treatment, increasing the molten salt temperature, promoting unconverted retained austenite to be decomposed and converted into sorbite, carrying out isothermal tempering, and finally, carrying out roller way slow cooling, so as to prepare the hot-rolled wire rod of which the microscopic structure comprises a complex-phase structure consisting of tempered bainite and tempered sorbite, the drawing and hardening capacity can be improved, the production efficiency is considered, the tensile strength is 1522-1572 MPa, and the percentage reduction of area is 29%-34%, so that off-line heat treatment is avoided, and the wire breaking risk and cost of stranded wire manufacturing are reduced.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2200MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, and the manufacturing method comprises the following steps: rolling and spinning to form a wire rod by adopting a high-hardenability component design, and then carrying out online molten salt mixed phase region quenching isothermal treatment, so that the wire rod is firstly subjected to front-section molten salt treatment and enters a bainite and pearlite phase region from an austenite state; the method comprises the following steps: carrying out high-temperature treatment on austenite to promote part of austenite to be converted into bainite and sorbite, carrying out later-section molten salt treatment, increasing the molten salt temperature, reducing the molten salt circulation amount, promoting unconverted retained austenite to be decomposed and converted into bainite and sorbite, carrying out isothermal tempering, and finally carrying out slow cooling through a roller way, the hot-rolled wire rod with a microscopic structure comprising a complex phase structure composed of tempered bainite and tempered sorbite is prepared, the material cost can be reduced, the complex phase structure and the structure toughness can be regulated and controlled on line, the tensile strength is 1505-1555 MPa, the percentage reduction of area is 32%-37%, efficiency and energy consumption are both considered, off-line heat treatment is avoided, and high-efficiency production of stranded wires is promoted.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2360MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod. After a Mo-V high-carbon component system is rolled and spun into a wire rod, the wire rod is subjected to on-line molten salt weak quenching toughening treatment, so that the wire rod is subjected to front-section molten salt treatment to be quickly cooled, enters a bainite and sorbite mixed phase region from an austenite state, and is subjected to high-temperature heat treatment to form a high-strength complex-phase hot-rolled wire rod; the method comprises the following steps: firstly, carrying out heat treatment on residual austenite to form a structure mainly comprising bainite and sorbite, then carrying out later-section molten salt treatment, increasing the temperature of molten salt, promoting decomposition and conversion of unconverted residual austenite into sorbite, carrying out isothermal tempering, and finally, carrying out roller way slow cooling to prepare a hot-rolled wire rod of which the microscopic structure comprises a complex-phase structure consisting of tempered bainite and tempered sorbite, the method has the advantages that the structure toughness can be regulated and controlled on line, the tensile strength is 1574-1627 MPa, the percentage reduction of area is 28-33%, the mechanical property fluctuation is reduced, the material cost and the production efficiency are both considered, the ultra-high-strength stranded wire can be produced without off-line heat treatment, and the wire breaking risk is reduced.

The invention relates to a high-strength complex-phase hot-rolled wire rod for a 2260MPa-grade stranded wire and a manufacturing method of the high-strength complex-phase hot-rolled wire rod, after the high-carbon component design of C-Si-Mn-Cr-V-Nb-V is rolled and spun into a wire rod, the wire rod is subjected to online molten salt mixed quenching isothermal treatment, so that the wire rod is subjected to front-section molten salt treatment to be quickly cooled, enters a bainite and pearlite mixed phase region from an austenite state, and is subjected to hot rolling and hot rolling to form the high-strength complex-phase hot-rolled wire rod. The method comprises the following steps: carrying out first-stage molten salt treatment on austenite to promote transformation of part of austenite to bainite and sorbite, then carrying out later-stage molten salt treatment to increase the molten salt temperature, promoting decomposition and transformation of untransformed retained austenite into sorbite, carrying out isothermal tempering, and finally carrying out slow cooling through a roller way, a hot-rolled wire rod with a microscopic structure comprising a complex-phase structure composed of tempered bainite, tempered sorbite and ferrite is manufactured, the tensile strength is 1547-1597 MPa, and the percentage reduction of area is 27%-32%, so that when a high-strength stranded wire is manufactured, off-line heat treatment is not needed, the drawing pass number is reduced, and the wire breaking risk is reduced.

According to the hafnium oxide-based ferroelectric crystal phase modulation method based on the superlattice structure, each hafnium oxide layer in a hafnium oxide-based ferroelectric film is designed to be formed by stacking m hafnium oxide sub-layers, and each doped element layer is designed to be formed by stacking n doped element sub-layers; the hafnium oxide layer and the doping element layer are stacked to form a superlattice structure, and the hafnium oxide-based ferroelectric crystal phase is modulated as o phase dominant, t phase dominant or o / t mixed phase by determining the values of m and n, and the method is as follows: by volume, when the content of o phase is greater than 60%, o phase dominant, m is greater than or equal to 2 and less than or equal to 10, and n is 1.5 * m; when the content of the t phase is greater than 60%, the t phase is dominant, m is greater than or equal to 20 and less than or equal to 30, and n is equal to 2.5 * m; when the difference between the content of the o phase and the content of the t phase does not exceed 20%, the phase is an o / t mixed phase, m is more than 10 and less than 20, and n is equal to 2 * m; wherein m is an even number. According to the invention, the crystalline phase of the hafnium oxide-based ferroelectric film can be modulated, the electric leakage is extremely low, and the reliability is high.

The invention relates to a high-plasticity wire rod for a hand tool and a manufacturing method of the high-plasticity wire rod, and the manufacturing method comprises the following steps: carrying out rolling, spinning, on-line molten salt isothermal toughening and roller way slow cooling treatment on a steel billet to prepare the wire rod with a microscopic structure comprising tempered bainite and ferrite, phase change and isothermal toughening treatment of the wire rod in a ferrite and bainite mixed phase region are controlled through online molten salt isothermal toughening, the wire rod adopts Cr-V chemical component design, the content of alloy elements such as Mn and V is relatively low, the online molten salt isothermal toughening technology is combined, the material cost and the mechanical property fluctuation of the wire rod can be reduced, the plasticity and cold machining performance of the wire rod are effectively improved, and the service life of the wire rod is prolonged. The tensile strength of the wire rod is 910-960 MPa, the percentage reduction of area is 58%-65%, extra heat treatment before cold machining of a hand tool is omitted, the cracking risk of direct cold machining of the wire rod is reduced, and the machining cost of the hand tool is reduced.

Provided are a sodium-ion positive electrode material, and a preparation method therefor and the use thereof. The general formula of the sodium-ion positive electrode material is NaxNiyFezMntCuhZnmBnAlgCejMgkSruO2, and the sodium-ion positive electrode material is an O3-phase material. In the preparation method, by adding and mixing a sodium source in two steps and performing two-step sintering, a P2 / O3 mixed phase is first generated to serve as an intermediate phase in a manner that the sodium source gradually increases, wherein the presence of a P2 phase can make the subsequent secondary sintering reaction more sufficient and the diffusion of elements more uniform and enables sodium ions to be uniformly supplemented into a bulk phase, resulting in an O3 phase finished product ultimately prepared having a lower content of surface residual sodium, good stability in air and good rate cycle performance.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention discloses a cloud phase fine identification and liquid water and ice water quantitative remote sensing device, which comprises a split-phase cloud water quantitative detection laser radar, a novel temperature and humidity remote sensing system and a millimeter wave cloud radar, and is composed of a laser emission module, a telescope receiving module, a microwave radiation module, three laser radar detection modules and a digital signal processing module. The system is composed of a central control processing module and a terminal server. The invention further discloses a remote sensing method of the quantitative remote sensing device. All-day detection and quantitative inversion of liquid water, ice water, water vapor, aerosol and cloud are achieved through the split-phase cloud water quantitative detection laser radar. A novel temperature and humidity remote sensing system is adopted to realize real-time fine detection of a temperature and humidity profile in the cloud. According to the cloud phase state fine identification and liquid water and ice water quantitative remote sensing device and method provided by the invention, the problems that the quantitative detection precision of the liquid water and ice water content in the cloud is insufficient and the mixed phase cloud identification is difficult in the prior art are solved.

The invention discloses a nuclear magnetic signal separation method for water in a miscible solution in a porous medium, and relates to the technical field of fluid flow research, and the method comprises the following steps: S1, selecting a porous medium core sample to be detected, and obtaining the gas logging porosity and permeability of the core; s2, injecting ethanol into the saturated water rock core to simulate a displacement process, and obtaining relaxation time distribution of the rock core; s3, injecting ethanol into the dried rock core, and obtaining relaxation time distribution of the rock core; s4, heavy water is injected into the saturated water rock core, and relaxation time distribution of the rock core is obtained; s5, obtaining relaxation time distribution of water in a mixed solution of ethanol and water; s6, acquiring an ethanol injection PV critical value of a differential spectrum method; s7, obtaining an ethanol injection PV critical value of a time domain analysis method; and S8, selecting a differential spectrum method or a time-domain analysis method to separate a nuclear magnetic signal of water in a mixed solution of ethanol and water in the porous medium. The problem that the content and distribution change of water in the porous medium in the miscible-phase displacement process are difficult to accurately measure by an existing conventional displacement experiment method is solved.

The invention discloses a nanoscale high-stability alcohol-in-oil transparent system and a preparation method thereof. The system comprises the following components in percentage by mass: 20-30% of PPG-13-decyl tetradecanol polyether-24, 20-30% of polydimethylsiloxane, 20-30% of polydimethylsiloxane, 20-30% of a 40 to 68% of methyl propylene glycol; 2 to 6% of propylene glycol dibenzoate; and 6-32% of polar grease. The preparation method comprises the following steps: heating and uniformly stirring the propylene glycol dibenzoate and the grease at 55-75 DEG C to obtain an oil phase; adding PPG-13-decyl tetradecyl alcohol polyether-24 into the oil phase, and stirring to obtain a mixed phase; adding methylpropanediol into the mixed phase, and stirring; and cooling to room temperature. The alcohol-in-oil transparent system prepared by a rapid and convenient process has the characteristics of small particle size and high stability, can load tetrahydrocurcumin and other active matters, and has important application value in the field of cosmetics.

The invention relates to the technical field of hydrometallurgy production systems, in particular to a solvent regeneration control system for separating zirconium and hafnium through MIBK method centrifugal extraction, which comprises a control module used on a solvent regeneration neutralization reactor, and the control module comprises a heat exchange module; the heat exchange module comprises a heat exchange unit; the heat exchange unit comprises a cooling liquid flow adjusting unit, a cooling liquid temperature detecting unit and a cooling liquid pressure detecting unit. And the heat exchange module is used for controlling the flow of the cooling liquid, the pressure of the cooling liquid and the temperature of the cooling liquid of the heat exchange unit so as to adjust the temperature of the mixed phase in the neutralization reactor. The control system can monitor the flow, temperature and pressure of cooling liquid in real time, accurately control opening, closing and temperature adjustment of the heat exchange unit, quickly respond to temperature change of a mixed phase in the neutralization reactor, remove reaction heat in time, effectively avoid the problem of extraction system emulsification caused by high-temperature decomposition and polymerization of thiocyanic acid in the solvent regeneration process, and improve the extraction efficiency. The solvent regeneration efficiency and quality are ensured.

The present invention provides a mixed-phase multi-phase fault-tolerant motor cooling structure. The structure includes: a stator unit component, a winding, an isolation tooth cooling channel, a stator unit and an oil collecting ring. The stator is composed of a plurality of stator units, and the stator unit is composed of two stator unit components. The stator unit component and the stator unit are axially plugged into each other, and the winding is distributed in each stator unit. The winding bypasses the teeth of the stator unit, and an isolation tooth cooling channel is also arranged between the two stator units and connected to the isolation teeth; the plug-in mating part between the two stator units is the isolation tooth, and the cooling medium in the isolation tooth cooling channel flows through the oil collecting ring at one end to the oil collecting ring at the other end, taking away the heat in the isolation teeth and the stator unit. The present invention proposes a multi-phase fault-tolerant motor isolation tooth cooling structure, which enhances the circumferential heat dissipation capacity of the motor shaft, solves the problem of unbalanced heat distribution when the multi-phase motor is faulty, and makes the motor run at a lower temperature under the same state.

A solid-liquid mixed phase change multi-stage heat dissipation battery pack heat management system belongs to the field of power battery heat management systems and comprises a battery pack, a plurality of battery cells are arranged in the battery pack, the battery pack is filled with fluorinated liquid, and a plurality of heating units are arranged on the bottom side of an inner cavity of the battery pack. A plurality of composite phase change blocks are further arranged in an inner cavity of the battery pack between the heating units and the lower partition plate, a medium inlet in the bottom side and a medium outlet in the top side of the battery pack are connected with a first channel of a plate heat exchanger, and a second channel of the plate heat exchanger is connected with a heat dissipation circulation loop; a heat dissipation medium can flow into the second channel through the heat dissipation circulation loop so as to cool the fluorinated liquid in the first channel, a temperature sensor and a pressure sensor are arranged in the battery pack, the medium outlet is further connected with a pressure relief pipeline through a pressure relief valve, and the side wall of the battery pack is connected with a first liquid supplementing device through a liquid supplementing opening. And the adverse effects of the low-temperature starting problem and the thermal overshoot problem of the automobile on the service life and the safety of the battery are improved.

An oil-free compressor includes a compressor housing with a suction inlet and a discharge outlet, a compression mechanism and a liquid-vapor separation volume disposed within the compressor housing, a crankshaft. The compression mechanism has an inlet fluidly connected to the suction inlet and a discharge volume fluidly connected to the discharge outlet. The crankshaft is engaged with the compression mechanism. The liquid-vapor separation volume is configured to separate a mixed phase of working fluid into liquid working fluid and gaseous working fluid. The liquid working fluid is supplied to the bearing. A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a refrigerant circuit with an oil-free compressor, a condenser, one or more expanders, and an evaporator.

The invention discloses a deicing material with a low-interface-toughness coating coupled with a mixed phase change material and a preparation method of the deicing material, and belongs to the technical field of anti-icing and deicing materials. The preparation method comprises the following steps: spraying a product solution obtained by grafting micron-sized hydrophilic silicon dioxide, nano-sized aluminum oxide and a silane coupling agent on the surface of a substrate, drying and curing to obtain a micro-nano porous structure bottom layer, and uniformly coating the micro-nano porous structure bottom layer with a Graphene-coated PEG400 mixed phase change material to form a phase change heating / photo-thermal layer. And finally, spraying a low-interface toughness coating prepared by reacting polydimethylsiloxane with a cross-linking agent and a polymerization increasing agent on the phase change heating / photo-thermal layer to obtain the deicing material. According to the invention, the weak binding force of the low-interface toughness coating is utilized to greatly reduce the adhesive force between the ice layer and the substrate, and the heating effect of the phase change heating / photo-thermal layer is utilized to realize low-energy-consumption intelligent deicing, so that the safety and economical efficiency of equipment are remarkably improved.

Techniques for determining microbiological corrosion include flowing a mixed-phase wellbore fluid from at least one tank into a volume of a reactor tank of a microbiological corrosion reactor; controlling a multi-channel potentiostat coupled to a three-electrode cell assembly positioned in the volume, the three-electrode cell assembly including a working electrode, a counter electrode, and a reference electrode, where each of the working electrode, the counter electrode, and the reference electrode is positioned in the volume to contact the mixed-phase wellbore fluid; based on controlling the multi-channel potentiostat, activating the working electrode in the mixed-phase wellbore fluid in the volume; and determining, based on activating the working electrode, a corrosion rate of at least one of the working electrode or a target coupon positioned within the mixed-phase wellbore fluid in the volume.

The invention provides spherical cobaltosic oxide as well as a preparation method and application thereof, the preparation method comprises the following steps: (1) injecting a cobalt salt-containing solution and a carbonate solution into a base solution in a parallel flow manner for a coprecipitation reaction to obtain a mixed-phase precursor; and (2) calcining the mixed phase precursor to obtain the spherical cobaltosic oxide, wherein the solute of the base solution in the step (1) is alkali metal hydroxide. According to the method disclosed by the invention, the precursor of the hydroxyl cobalt oxide and cobalt carbonate mixed phase can be prepared without separating kettles, the content of foreign ions in the precursor is low, and small-particle and high-purity cobaltosic oxide can be prepared by directly sintering.

The invention relates to a method for producing solid lithium salt through extraction-liquid-liquid-solid three-phase reverse extraction from a lithium-containing solution, which comprises the following steps: (1) mixing the lithium-containing solution with a composite extraction agent, and carrying out extraction treatment to obtain a lithium-loaded first organic phase and a raffinate phase; (2) carrying out impurity removal treatment on the first organic phase to obtain a second organic phase; and (3) mixing the second organic phase with a stripping agent, carrying out stripping treatment to obtain an oil-water-solid three-phase mixed phase containing solid lithium salt, and carrying out phase separation on the mixed phase to obtain the solid lithium salt, wherein the stripping agent is an acid solution containing a lithium salt solid. According to the method, efficient separation of lithium and a large number of impurities is achieved through extraction and washing treatment, the solid lithium salt is directly obtained after reverse extraction treatment, the battery-grade solid lithium salt product can be obtained after impurity removal treatment, and the method has the advantages of being simple in preparation technology, short in process, high in product purity and low in production cost.

The invention provides an all-digital dual-mixing phase discrimination filtering system and a metastable state median filtering method, and relates to the technical field of signal processing. The system provided by the invention is completely realized by an FPGA (Field Programmable Gate Array), and frequency mixing processing is carried out on a tested clock signal by adopting a multi-stage frequency mixing link, so that the influence of a metastable state on a DDMTD (Digital Division Multiplexing Time Division Multiplexing) frequency mixing result is reduced; in addition, a DDMTD burr filtering module arranged in the multi-path filtering module is used for simultaneously carrying out metastable state filtering on multi-path DDMTD frequency mixing results of the same clock signal, and the edge of each path of DDMTD frequency mixing result is accurately recovered; in addition, DDMTD clock phase difference measurement is carried out on each path of DDMTD frequency mixing result edge after filtering recovery through a clock phase difference measurement module; and finally, the mean value filtering module is used for finishing mean value processing on the multi-channel DDMTD clock phase difference measurement result, so that the measurement precision of the digital double-mixing phase discrimination filtering system is further improved.

The invention relates to the technical field of fracturing fluid formulas and fracturing methods, in particular to a mixed-phase tackifying fracturing fluid system and a shale oil supercritical CO2 near-dry fracturing method, and the mixed-phase tackifying fracturing fluid system comprises a water-phase fracturing fluid and a CO2-phase fracturing fluid; the water-phase fracturing fluid comprises a water-phase thickening agent and water, and the CO2-phase fracturing fluid comprises a CO2-phase thickening agent and CO2. According to the invention, the net pressure at the bottom of the well during CO2 injection is greatly improved, the complexity of fracturing and crack forming is improved, the CO2 phase long-distance sand-carrying support function is realized through a CO2 tackifying technology, the CO2 acting distance is improved, and the water sensitivity, water locking and fracturing fluid residual gum damage of the water phase fracturing fluid to a reservoir are greatly reduced by reducing the water phase proportion, so that the fracturing efficiency is improved. And finally, the fracturing transformation effect and the recovery efficiency are greatly improved.

The invention provides a layered oxide sodium ion positive electrode material as well as a preparation method and application thereof, and relates to the technical field of sodium ion batteries. Specifically, the layered oxide sodium ion positive electrode material is of a core-shell structure, a core layer comprises an O3 type layered oxide, a shell layer comprises sodium-containing phosphate, and the sodium-containing phosphate comprises NaCaPO4; a mixed phase of O3 type layered oxide and calcium is arranged on the surface of the core layer; in the mixed phase, the concentration of calcium is gradually increased from inside to outside. According to the positive electrode material, the interface chemical stability of the material can be remarkably improved, the mechanical strength of the positive electrode of the sodium-ion battery and the electrochemical performance of long circulation are remarkably improved, and the positive electrode material has a good application prospect.

The invention relates to the technical field of fracturing yield increasing equipment, in particular to a gas fracturing yield increasing device, and aims to relieve the technical problem that the displacement of a mixed-phase liquid material between a low-pressure inlet and a high-pressure outlet is difficult to control in related technologies. The gas fracturing yield increasing device comprises a flow box, the flow box comprises a shell, an extending pipe, a blocking plate and a driving part, the shell is provided with a containing cavity, a liquid inlet and a liquid outlet are formed in the two opposite side walls of the shell respectively, the extending pipe is fixed in the containing cavity, a plurality of overflowing holes are formed in the side wall of the extending pipe, one end of the extending pipe is open and communicated with the liquid inlet, and the other end of the extending pipe is closed. The extending pipe is sleeved with the blocking plate, and the driving piece is in transmission connection with the blocking plate. According to the gas fracturing yield increasing device, the flow box is arranged, so that the flow of the mixed-phase liquid material can be controlled, and the mixed-phase liquid material can carry standard sand to fill a stratum.

The invention relates to the technical field of atmospheric science and numerical calculation, discloses an atmospheric numerical simulation method based on multiphase state water substance conservation constraint and application, and aims at evolution calculation of all phase state water substances under the conditions of discrete grids and discrete time steps for atmospheric numerical mode cloud microphysical parameterization. The method comprises the following steps: acquiring the density and velocity field of each component in a grid unit, and constructing a mass ratio variable normalized by wet air density; defining a growth rate per unit volume and per unit time, and representing a phase change source sink by using a component continuity equation; and establishing a coupling discrete updating rule according to the mass ratio accurate evolution equation, calculating a total water substance growth rate residual error and a ratio residual error corresponding to the equivalent conservation expression, and obtaining a corrected growth rate meeting conservation constraint through consistency correction so as to write back and update the mass ratio field. The method can inhibit the income and expenditure drift of water substances, reduces the phase distribution error under the condition of mixed phase cloud, and is suitable for numerical weather forecast and regional numerical simulation.

The utility model provides an extraction mixed liquid phase splitting device and phosphoric acid extraction phase splitting equipment. A first-stage light phase chamber is formed between the upper ring baffle and the top wall of the inner cavity of the tank body, a first-stage heavy phase chamber is formed between the lower ring baffle and the bottom wall of the inner cavity of the tank body, and a mixed phase chamber is formed between the upper ring baffle and the lower ring baffle; the liquid injection assembly is arranged in the mixed-phase chamber; the upper ring baffle is provided with a light phase passing opening, and the lower ring baffle is provided with a heavy phase passing opening. An upper ring surrounding plate is arranged on the periphery of the light-phase passing opening in an upward protruding mode, and a second-stage light-phase chamber is formed between the inner wall of the first-stage light-phase chamber and the upper ring surrounding plate; a secondary heavy phase chamber is formed between the inner wall of the primary heavy phase chamber and the lower ring coaming plate, an extracting solution in the primary heavy phase chamber can sink along the lower ring coaming plate for phase splitting, and a solvent in the primary light phase chamber can continuously float along the upper ring coaming plate for phase splitting; therefore, the solvent entrained in the extracting solution and the extracting solution entrained in the solvent are reduced.

The utility model discloses a multiphase mixing and separating device which comprises a cylindrical groove body, and a transverse partition plate is arranged on the lower portion of an inner cavity of the cylindrical groove body and divides the inner cavity of the cylindrical groove body into a two-phase converging area and a two-phase mixing and separating area. A longitudinal partition plate is arranged in the middle of the two-phase afflux area and divides the two-phase afflux area into an organic phase area and a water phase area; an organic phase inlet pipeline connector and a water phase inlet pipeline connector are arranged at the bottom of the cylindrical tank body; a two-phase confluence port is formed in the center of the transverse partition plate, and the organic phase area and the water phase area are both communicated with the two-phase confluence port; the two-phase mixing and separating area is divided into a vortex channel by a vortex partition plate, the central area of the vortex channel is a stirring area, and a mixed phase outlet is formed in the side wall of the stirring area; phase splitting plates are longitudinally distributed in the vortex channel; a stirring motor is arranged at the top of the cylindrical tank body and is connected with a stirring rod extending into the stirring area; a water phase outlet is formed in the lower part of the side wall of the two-phase mixing and separating area; an organic phase outlet pipeline interface is formed in the upper part of the side wall of the two-phase mixing and separating area; and a water phase regulator is arranged outside the side wall of the two-phase mixing and separating area.

The invention provides a negative active material and a preparation method thereof, a battery, a battery pack and electronic equipment. The negative electrode active material comprises a hard carbon body, a transition region and a carbon coating layer; the transition area is located on at least part of the outer surface of the hard carbon body, and the carbon coating layer is located on at least part of the outer surface of the transition area; and the transition region is a mixed phase of the hard carbon body and the carbon coating layer. The negative electrode active material has excellent dynamic performance, side reaction is not easy to occur between the negative electrode active material and electrolyte when the negative electrode active material is applied to the battery, and the rate capability and the cycle performance of the battery can be improved by the negative electrode active material.