106results about How to "Meet the needs of industrial applications" patented technology

The invention relates to a PI (Proportional Integral) parameter mixed setting method, which is a model-based mixed setting method combining off-line setting and fuzzy PI on-line setting for ensuring that a closed loop vector control system works in an optimal state. The PI parameter mixed setting method comprises the following steps of: firstly deducing a mathematic model of a system according toa vector control principle, calculating rotational inertia by a method of constant torque start and machine free stop, and calculating PI parameters and inner ring compensation dosage according to the mathematic model; proposing a new PI control rule table by a fuzzy PI controller; and finally verifying the exactness of the PI parameters by a comparison test. According to the PI parameter mixed setting method disclosed by the invention, the dynamic property and the steady state precision of the system are improved and are better than those of a system utilizing a single setting method, and the validity of the method is verified.

The invention provides a catalyst special for O-alkylation production of aromatic ether and a method for producing aromatic ether. The catalyst is a supported catalyst, wherein transition metal or precious metal serves as an active component, a mixture of any one of ammonium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium phosphate and phosphoric acid and any one of potassium hydroxide, potassium carbonate, sodium hydroxide and sodium carbonate serves as an auxiliary, one or a mixture of an oxide carrier, clay and a molecular sieve serves as a carrier, the weight carrying amount of the active component is 0.1-5%, and the weight carrying amount of the auxiliary is 0.1-1%. The method comprises the steps that phenol and alkyl alcohol are catalyzed to react through the catalyst, wherein the mole ratio of phenol to alkyl alcohol in the raw materials is 1:(3-10), the catalyzing reaction is carried out in a gas-solid phase continuous flowing reaction device, and the catalyzing reaction temperature is 230-300 DEG C. The one-way service life of the catalyst reaches 3000 h or longer, and the problems that a catalyst used in the existing aromatic ether production process is short in service life, and consequently continuous industrial production of aromatic ether cannot be achieved are solved.

The invention discloses a question analyzing method and system for interactive question answering. The method includes the steps of S1, determining question information, preprocessing the question information and extracting multiple pieces of feature information in the question information; S2, extracting a plurality of keywords in the question information according to the feature information, anddetermining a plurality of properties corresponding to the keywords; S3, determining whether the semantic meaning of the question information is complete or not in combination with the properties, ifnot, executing the step S4, otherwise executing the step S5; S4, restoring the semantic meaning of the question information in combination with a historical conversation and based on a deep learningenhancing method, using the restored question information as new question information and executing the step S1 to S3; S5, conducting template matching on the question information according to the properties and dividing the question information according to types. The deep Q-Learning method based on deep learning enhancing is added, and therefore the semantic meaning restoration accuracy is improved, and the industrial application requirements are well met.

The invention discloses a current transformer control device. A first digital signal processor (DSP) module is externally connected with a communication interface module, and a data and address bus is connected with a first field programmable gate array (FPGA) module at the same time to receive and transmit various communication data; the first FPGA module is connected with the first and second DSP modules and exchanges data with the first and second DSP modules, and the first FPGA module is connected with a second FPGA module to perform control signal transmission; a dynamic random access memory (DRAM) module is connected with the first DSP module and the second DSP module respectively to realize data exchange of the first and second DSP modules; and the second DSP module is connected with an analog / digital (A / D) module, a digital / analog (D / A) module and the first and second FPGA modules. According to the technical scheme, the current transformer control device has high data acquisition and output capacities, simultaneously has strong universality, has various communication functions and interfaces, and can meet the requirements of various industrial application occasions.

A gas antichlor comprises 50 to 88 mass percent of alkaline earth oxides, 10 to 40 mass percent of alumina and 2 to 30 mass percent of bentonite. The antichlor can effectively remove the hydrogen chloride in the gas at high temperature, is especially suitable for the dechlorination of a constant reforming and regenerative gas with high water content, is not easy to slime or cake in the process of dechlorination, and has higher crushing strength.

The invention relates to high-strength low-contract polyphenylene sulfide (PPS) filament and a preparation method thereof. In the high-strength low-contract PPS filament, monofilament line density is 2-4 dtex, breaking strength is 4-6 cN / dtex, elongation at break is 15-20%, and dry heat contractibility rate (processing the filament for 30min at the temperature of 180 DEG C) is less than 5%. The preparation method includes drying and crystallizing PPS slices, melt-extruding, spinning, cooling, applying oil, and winding preliminarily; then adopting level 1 to level 3 drafting to obtain draft filament; and conducting heat setting processing on the draft filament, and obtaining the high-strength low-contract PPS filament, wherein the heat setting processing includes two steps of dynamic heat setting and static heat setting. The high-strength low-contract PPS filament fiber is high in manufacture yielding rate, even in fiber fineness and good in breaking strength, elongation at break, boiling water shrinkage and dry heat contractibility and is far better in comprehensive performance than the existing PPS filament products in the market.

The invention discloses a preparation method for low-molecular-weight fish hydrolyzed protein powder. The preparation method comprises following steps of: by taking fresh and alive freshwater fishes as raw materials, and preparing the low-molecular-weight fish hydrolyzed protein powder via the processes of raw material pre-treatment, deodorization, enzymolysis, enzyme deactivation, centrifugation, desalination, concentration, and spray drying. The fish hydrolyzed protein powder prepared by the preparation method disclosed by the invention is low in molecular weight, the content of the fish hydrolyzed protein powder having a molecular weight of less than 1000 Da achieves more than 80%, and the fish hydrolyzed protein powder is easy to digestively absorb; the solubility achieves more than 95%; the fish hydrolyzed protein powder prepared by the preparation method disclosed by the invention is produced from the freshwater fishes, and rich in source; the preparation method disclosed by the invention provides a new route for high-valued utilization for the freshwater fishes; the preparation method disclosed by the invention utilizes a biological enzymolysis technology, as well as is high in efficiency and pollution-free; the product is safe, effective, and without toxic and side effects; the low-molecular-weight fish hydrolyzed protein powder is easier to be digestively absorbed than fish protein, capable of being applied to infant nutrition formulation foods, convenient foods, instant drinks, seasonings and the like as a food raw material or an auxiliary material, and wide in market prospect.

The invention discloses an air supply and water supply system for a fuel cell test board. The air supply and water supply system comprises a compressed air branch path and an oxygen source branch pathwhich are mutually connected in parallel, a reaction gas supply branch path, a nitrogen pipeline, a humidifying branch path, a galvanic pile cooling water circulating branch path, a water supplantingbranch path and an exhaust gas emission branch path. Through switching of an air source, the air supply and water supply system for the test board can be used for the testing of a hydrogen-air fuel cell stack and also can be used for the testing of a hydrogen-oxygen fuel cell stack; and the inlet temperature of cooling water at the galvanic pile of the test board can be adjusted by controlling the temperature of a pure water tank and the flow of external cooling water. The test board using the air supply and water supply system has the characteristics of operating mode diversification, high adaptability, high reliability, convenient maintenance, low operating cost and the like.

The invention discloses a multi-level optimization design method of a GIS / GIL basin-type insulator with high electrical resistance. The method comprises a preliminary design stage and a detailed design stage. In the preliminary design stage, the basic shape of the GIS / GIL basin-type insulator is constructed by adopting contour shape optimization, the shapes of a convex surface and a concave surface of a basin body are described by utilizing a two-dimensional contour function, dielectric functionally graded material distribution is considered to be introduced, dielectric property space distribution is adjusted by utilizing topological optimization to actively regulate and control electric field distribution, and a creeping electric field is further deeply homogenized; in the detailed designstage, according to a dielectric distribution topological optimization result, the optimized gradient insulation area is converted into a high dielectric area with a constant dielectric constant, thesizes of the high-voltage side metal accessory and the high dielectric area are finely adjusted, an optimal size parameter is found out by adopting a genetic algorithm or an ant colony algorithm so as to finish the design of the basin-type insulator for GIS / GIL. The design space can be fully expanded, depth suppression of a creeping electric field is achieved, and the purpose of increasing the breakdown voltage of the basin-type insulator is achieved.

The invention discloses a carbon adsorbent special for methane in pressure swing adsorption and a preparation method for the carbon adsorbent. The carbon adsorbent with the iodine value of 900-1,000mg / g and the methylene blue value of 100-150mg / g is prepared from the following raw materials in part by mass: 100 parts of pulverized coal, 35 to 45 parts of coal tar, 3 to 8 parts of potassium hydroxide, 2 to 6 parts of potassium nitrate, 3 to 8 parts of calcium carbonate, 2 to 6 parts of magnesium chloride and 10 to 20 parts of water through pressing, carbonization and activation. The carbon adsorbent special for methane in pressure swing adsorption has high strength of over 95 percent, concentrated micropores with large pore volume, quick adsorption and desorption, the CH4 adsorption capacity of 25.0mL / g, and the CO adsorption capacity of 2.0mL / g, and can completely meet the requirement of the current domestic industrial application.

The invention discloses immobilized lipase and a preparation method thereof. The preparation method comprises the following steps of respectively dissolving a compound carrier and lipase into a buffersolution with pH (potential of hydrogen) value of 6.0 to 8.0, so as to obtain a compound carrier solution and a lipase solution; uniformly mixing the compound carrier solution and the lipase solutionaccording to a ratio of compound carrier to lipase as (26 to 47)mg:(400 to 1600)U, so as to obtain a compound carrier / lipase mixed solution, wherein the content of the compound carrier in the compound carrier / lipase mixed solution is 12.8 to 23.6mg / mL; dripping the compound carrier / lipase mixed solution into a mixed solution containing a crosslinking agent and calcium chloride, forming gel microspheres, crosslinking and immobilizing, washing, suction filtering, so as to obtain the immobilized lipase. The prepared immobilized lipase has the advantages that the enzyme activity reaches 380U / g, the yield rate of enzyme activity is about 50.09%, the heat stability and repeated utilization rate are higher, and the requirement of industrialized application is met.

The invention discloses a welding method for surface treatment of steel and titanium or steel and titanium alloy. The welding method comprises the following steps: step 1: an injection layer of titanium is formed on near surface and surface of the steel substrate through the ion-injection method; step 2: a sedimentary layer of titanium is deposited on the surface of the injection layer through the multi-arc ion plating method; step 3: the surface of the sedimentary layer is adopted as a surface to be welded; the sedimentary layer and titanium or the sedimentary layer and the titanium alloy are subject to the diffusion welding. According to the invention, metallurgical connection between titanium and steel or between the titanium alloy and the steel is achieved; the formation and the diffusion of inter metallic compounds of the titanium and the steel or the titanium alloy and the steel under high temperature are effectively reduced; the brittleness of the welded joints is reduced, so that the operational performance of the welded joints is remarkably improved and industrial application of structural components can be met.

The invention discloses an electrolytic manganese residue innocent treatment method and a device thereof, belongs to the field of common industrial solid waste treatment, and aims to solve the problems that in an existing electrolytic manganese residue innocent treatment method, soluble manganese cannot be effectively utilized and manganese residue innocent treatment is in sore need of being realized. The electrolytic manganese residue innocent treatment method can be adopted to effectively realize innocent treatment on electrolytic manganese residues, and effectively solves the problem that electrolytic manganese residues are greatly accumulated and pollute the environment. The electrolytic manganese residue innocent treatment method is adopted to treat electrolytic manganese residues, sothat equipment investment cost is relatively small, energy consumption is relatively low, and treatment cost and operation cost can be effectively reduced. Meanwhile, the electrolytic manganese residue innocent treatment method is short in process flow, is stable in operation, is high in reliability, can meet industrial and large-scale production and application needs, has a relatively high application value and a relatively good application prospect in treating electrolytic manganese residues, and is worthy of being popularized and applied on a large scale. Besides, products treated by the electrolytic manganese residue innocent treatment method are stored and transported conveniently, use is wide, dosage is great, and economic values are relatively high.

The invention provides a negative electrode sheet and a lithium ion battery comprising the same. According to the negative electrode sheet disclosed by the invention, a first negative electrode activematerial layer and a second negative electrode active material layer are respectively coated on a negative electrode current collector through a double-layer coating technology, wherein the first negative electrode active material layer is positioned between the second negative electrode active material layer and the negative electrode current collector, the first negative electrode active material layer is made of a first negative electrode active material with a relatively large heat conductivity coefficient, the first negative electrode active material with the relatively large heat conductivity coefficient is used so as not to easily accumulate heat and so as to reduce negative electrode polarization and effectively improve the electrode energy density, the surface of the second negative electrode active material layer is in contact with an electrolytic solution, the surface heat dissipation is relatively simple, the migration rate of lithium ions can be improved by proper heat, and the migration rate of the lithium ions can be promoted by using the second negative electrode active material with a smaller heat conductivity coefficient under the condition of ensuring that the heat cannot be locally gathered.

The invention discloses a high-performance microwave dielectric ceramics and a preparation method thereof. The principal crystalline phase is (1-x)CaTiO3-x(LayNd(1-y))GaO3, CaCO3, TiO2, La2O3, Ga2O3 and Nd2O3 are taken as raw materials, and the modified doping agent comprises BaCO3 and SrCO3. The (1-x)CaTiO3-x(LayNd(1-y))GaO3 microwave dielectric ceramics is prepared according to the traditional solid-phase reaction method. The provided microwave dielectric ceramic material has excellent microwave dielectric performance, the relative dielectric constant epsilon r is adjustable between 40 and 45, Q*f is 40000-45000GHz, the resonant frequency temperature coefficient can be continuously adjusted, and the microwave dielectric ceramics can be widely applied to preparing dielectric resonators, filters, duplexers and other microwave devices in the modern communication base station.

The invention provides a single-plate electrode electric field driving spraying deposition micro-nano 3D printing method, and belongs to the technical field of 3D printing and micro-nano manufacturing. A single-plate electrode electric field driving spraying deposition micro-nano 3D printer and a brand new printing working mode are combined, single-plate electrode electric field driving spraying deposition micro-nano 3D printing macro / micro / nano cross-scale manufacturing is realized, and the problem of low-cost manufacturing of a multi-material cross-scale complex three-dimensional structure is solved. The single-plate electrode electric field driving spraying deposition micro-nano 3D printing working method further has the outstanding advantages of being simple in process, flexible to operate, easy to implement, low in production cost and good in universality and particularly has the unique advantage of stable printing of any combination of a nozzle, a base material and a printing material, and the application field and range of the technology are greatly extended.

The invention discloses high-dielectric property BST (Barium Strontium Titanate), a preparation method thereof and dielectric ceramic prepared by adopting the same, and aims to solve the problems that the higher the dielectric constant of an existing dielectric ceramic material is, the electric strength is lower, and the temperature stability and the electric field stability of the existing dielectric ceramic material are poorer. According to the high-dielectric property BST disclosed by the invention, composition design of high-dielectric property BST ceramic is optimized starting from an ABO3 type perovskite crystal structure and a dielectric micromechanism; by improving a preparation method of raw material powder and microscopic structure regulation and control and performance optimization of a ceramic sample, homogeneity and fine grain of the prepared raw material powder are realized, and higher sintering activity is obtained. The invention provides BST dielectric ceramic having both high dielectric constant and low dielectric loss and a preparation method thereof. The BST dielectric ceramic is simple in preparation technology, lower in cost and short in period, is suitable for large-batch production and can meet the demands of industrial application, materials provided by the BST dielectric ceramic can be used in high-power microwave device systems, actual application requirements are met, and a relatively wide application prospect is obtained.

The invention discloses a low-temperature demulsifier and a preparation method thereof. The low-temperature demulsifier is a eutectic solvent. The hydrogen bond receptor of the eutectic solvent is a compound with a general formula R4NX, and R in the formula is at least one of groups containing C1-C16; and X is halogen. The hydrogen bond donor of the eutectic solvent is at least one of an amide substance, an organic acid substance, a phenol substance and an alcohol substance. Cheap and easily available raw materials are adopted, the eutectic solvent with obvious demulsification and dehydrationeffects on thickened oil is prepared through a one-step heating method, the preparation method is simple and environmentally friendly, and the defects that a traditional demulsifier preparation technology is limited in raw material source, high in price, complex in technological process, serious in three wastes, serious in pollution and the like are overcome. The demulsifier disclosed by the invention is low in use temperature, low in energy consumption and suitable for demulsification and dehydration of various thick oils and super-thick oils, and can meet the requirements of industrial application.

The invention discloses a silicon nitride-based ceramic ball as well as a preparation method and application thereof. The silicon nitride-based ceramic ball is formed by depositing a silicon carbide layer on the surface of a silicon nitride ceramic ball. Compared with a silicon nitride ball without a silicon carbide layer deposited, the disclosed silicon nitride-based ceramic ball is not prone tocorrosion and weightlessness in strong acid, strong alkali and kinematic friction states, meanwhile, an interface in contact with the strong acid and strong alkali environment is compact pure siliconcarbide and free of sintering aids, and the silicon nitride-based ceramic ball has better wear resistance, corrosion resistance and the like and can be applied to the field of wear-resistant bearings.

The invention provides a negative plate and a lithium ion battery comprising the same. The negative plate is formed by coating a conductive coating between a negative current collector and a first negative active material layer, so that the contact resistance between the first negative electrode active material layer and the negative electrode current collector can be reduced, the acting force between the first negative electrode active material layer and the negative electrode current collector is improved, peeling of the first negative electrode active material layer is avoided, the buffer coating is coated between the first negative electrode active material layer and the second negative electrode active material layer, the contact resistance between the first negative electrode activematerial layer and the second negative electrode active material layer can be reduced, the acting force between the first negative electrode active material layer and the second negative electrode active material layer is improved, and the transmission rate of ions and electrons is increased; and the surface of the second negative electrode active material layer is coated with the safety coating,so that the volume expansion of the second negative electrode active material layer is further buffered, the lithium dendrites can be prevented from directly piercing the diaphragm to cause internal short circuit, and the safety risk is reduced.

The invention discloses glucoamylase mutants GA1, GA2 and GA4 with improved specific activity and thermal stability, and genes and applications of the glucoamylase mutants, relates to the field of genetic engineering, and particularly relates to the glucoamylase mutants with improved thermal stability, and the genes and applications of the glucoamylase mutants. In the amino acid sequence of glucoamylase TlGA1931, the amino acid at the position 132 is mutated from Ser to Cys, the amino acid at the position 492 is mutated from Tyr to Cys, the amino acid at the position 548 is mutated from Leu toCys, and the amino acid at position 562 is mutated from Ala to Cys. The mutant provided by the invention has excellent properties of high catalytic efficiency and good thermal stability, can completely meet industrial application requirements, can be well applied to food, medicine, textile and feed industries, and has a wide application prospect.

The invention relates to a heat-resistant alpha-amylase from bacillus geobacillus stearothermophilus and site-specific mutagenesis improvement thereof. According to the heat-resistant alpha-amylase, arecombinant plasmid containing amyGSM and a recombinant plasmid containing mutated M1-amyGSM and M2-amyGSM are successfully constructed, and thus various highly-expressed bacterial strains such as escherichia coli, bacillus, saccharomycetes and molds are obtained. An ecombinant host cell obtained is suitable for expression of an alpha-amylase gene. The optimum pH of the alpha-amylase is 6.5, theoptimum temperature is 70 DEG C, the thermal stability at 70 DEG C is good, and the enzyme activity is still about 50% after heat preservation for 8 h; and glutamate at the163th site is mutated to arginine, after removal of isoleucine and glycine at the 215th site and the 216th site, the higher thermal stability is achieved, and the alpha-amylase still remains the 85.6% enzyme activity after heatpreservation for 30 min at 85 DEG C.

The invention relates to a hydro-denitrification catalyst and application thereof. The hydro-denitrification catalyst is prepared from a modified alumina support and a hydro-denitrification active metal component loaded in the modified alumina support; the modified alumina support is granular and is prepared by forming and modifying a hydrated alumina composition; the hydrated alumina compositioncontains hydrated alumina and a compound with at least two proton acceptor sites, and the value of the composition is less than 5. The hydro-denitrification catalyst has good hydro-denitrification effect.

The invention relates to a signal processing technology for electromagnetic excitation acoustic emission. The signal processing technology comprises the following steps of: performing feature extracting and positioning based on fast fourier transform by a signal acquisition system, a preamplifier, a data acquisition card and a band-pass filtering system; amplifying an acoustic emission signal collected by the high-sensitivity, high-speed and distortion-less signal acquisition system by the preamplifier, and then inputting into the data acquisition card for converting into a digital signal; and after passing by the band-pass filtering system, performing feature extraction on the digital signal by adopting fast fourier transform, thereby realizing the judging and positioning on the defects. According to the signal processing technology provided by the invention, the quick treatment for the electromagnetic acoustic emission signal of the crack surface defect of the metal sheet made of a non-ferromagnetic material is realized by adopting the fast fourier transform; the signal processing technology has the characteristics of high processing speed, obvious signal feature and high reliability; according to the technology, the noise jamming to the acoustic emission technology caused by external environment is reduced; the usability and portability demands on an engineering application are met; and the industrial application value is excellent.

The invention relates to a tension device for weaving carbon fibers. A pair of rear yarn guide rollers is vertically arranged at one end of one wallboard and one end of the other wallboard, and an included angle is formed between the centers of the two yarn guide rollers; four middle yarn guide rollers are divided into two groups and respectively arranged on the wallboards and a support; a pair of swing arms is hinged to the wallboards; a tension roller is arranged at the tension roller mounting end of each swing arm through a bearing; when the mounting end of each swing arm moves to the upper surface of a support frame consisting of a pair of wallboards, the tension roller is positioned between a group of middle yarn guide rollers, and the lower circumferential surface of the tension roller and the upper circumferential surfaces of the group of middle yarn guide rollers are positioned on the same horizontal plane; and a pair of front support plates is fixed on the upper surface of one end of the support. The warp tension of the woven carbon fiber bidirectional cloth is uniform, platy macroscopic tension is 20 percent of breaking strength of a carbon fiber strand, an error is + / -2 percent, the warp texture fiber strength of the carbon fiber cloth is effectively improved, fatigue and damage tolerance is enhanced, cost is reduced, and the aim of reducing the whole weight is fulfilled.

The invention discloses a lead zirconate titanate material-based tunneling switch which comprises a substrate, a first electrode, a lead zirconate titanate material layer, a medium thin-film layer and a second electrode; the first electrode is arranged on the surface of the substrate; the lead zirconate titanate material layer is arranged on the surface of the first electrode, far from the substrate; the medium thin-film layer is arranged on the surface of the lead zirconate titanate material layer, far from the first electrode; the medium thin-film layer is made from a material with high dielectric constant; and the second electrode is arranged on the surface of the medium thin-film layer, far from the lead zirconate titanate material layer. The lead zirconate titanate material-based tunneling switch has the advantages that the material with high dielectric constant is adopted as the medium thin-film layer, thus improving the stability and reliability of the tunneling switch and meeting the requirements put forth by industrial application in a better way.

The invention relates to an insoluble polymeric quaternary ammonium salt bactericide, a preparation method thereof and a sterilization packed bed. The problems that a prior insoluble polymeric quaternary ammonium salt bactericide dissolves in water and bubbles easily, the reusability is poor and water is subjected to secondary pollution are solved. The technical scheme includes that resin is subjected to a swelling reaction, a sulfonic acid group is modified, then the resin is subjected to a graft reaction, and the insoluble polymeric quaternary ammonium salt bactericide is obtained after the quaternized reaction. The bactericide dose not dissolve in water, the secondary pollution can be avoided effectively, and the bactericide is easy to reproduce, capable of being reused, good in sterilization effect, safe, nontoxic, long in service life and suitable for production of the sterilization packed bed sterilizing recycling reclaimed water of metallurgical industry particularly.

The invention discloses an apparatus for ultrasonic-assisted machining. The apparatus comprises a machining tool, a first resonance rod, a second resonance rod and an ultrasonic oscillator, the firstresonance rod comprises a first non-closed gap, the second resonance rod comprises a second non-closed gap, and the ultrasonic oscillator transmits ultrasonic vibration through at least one of the first resonance rod and the second resonance rod. When machining is performed through the machining tool, the first non-closed gap and the second non-closed gap are arranged surrounding the machining tool. The requirement of more convenient replacement of machining tools including cutters and electrodes is met through the design of the resonance rods in the non-restricted structures with the cooperation of integration motion of a cylinder, a connecting trod mechanism and a tool machine so that the industrial application requirement of automation production is satisfied.

The invention discloses a wet gas flow online measurement method and device based on the piecewise characteristic of the pressure loss ratio of a V cone. The V cone of a throttling element is fixed through three support columns which are distributed uniformly along the circumferential direction, so that the impact resistance of the throttling element can be improved effectively, and the device reliability is improved. A two-phase mass flow coefficient K and a pressure loss ratio delta with the piecewise function characteristic are introduced to establish a two-phase flow prediction relation; the temperature, pressure, pressure difference and pressure loss signal in a pipeline are acquired in real time; and the signal is solved iteratively based on the established two-phase flow predictionmethod, so that the online measurement of the two-phase flow can be realized. The wet gas flow dual-parameter online measurement method and device based on the piecewise characteristic of the pressureloss ratio of the V cone have the advantages of simple structure, stability and reliability, and the measurement accuracy can meet the industrial demands.