3370 results about "Gas mixing" patented technology

The invention discloses full-component food processing equipment and processing technology based on a high-energy fluid mill, and the equipment comprises a wet crushing assembly which is used for preliminarily crushing food to form slurry; the high-pressure gas mixing assembly is communicated with the wet crushing assembly and is used for filtering large-particle impurities in the slurry and inputting high-pressure gas into the slurry; the high-energy fluid mill is communicated with the high-pressure gas mixing assembly, and the slurry collides with one another in the high-energy fluid mill; and the ultrasonic assembly is connected with the high-energy fluid mill, and the high-energy fluid mill is located in the ultrasonic range of the ultrasonic assembly. Supercritical gas, high-speed fluid collision and ultrasound jointly act on a mixture, so that emulsification homogenization, superfine grinding and instantaneous sterilization of the mixture are achieved, the mixture is sterilized in the grinding process, the grinding effect is good, a full-component food finished product material can be formed, use of independent sterilization equipment is avoided, and the production cost is reduced. The processing technology is simplified; and the occupied area of equipment is reduced.

The invention discloses a digital twin-driven marine diesel engine emission prediction and optimization method, which comprises the following steps: (1) constructing a comprehensive performance mechanism model, and obtaining twin data through representation and verification of the comprehensive performance mechanism model; (2) designing a calibration module based on a deep learning algorithm, taking real data and twin data as input, and outputting calibrated data through model training; (3) constructing a combustion stage mechanism module, and optimizing a gas inlet pipeline structure and improving mixing uniformity through simulation of a combustion mechanism model on oil-gas mixing characteristics and combustion efficiency; (4) constructing a data driving model, and fitting a relationship between the turbulent energy index and emission; and (5) taking the constructed comprehensive performance mechanism model, the calibration module, the combustion stage mechanism model and the data driving model fusion technology system as a fitness function, searching an optimal oil injection control parameter based on a particle swarm optimization algorithm, and formulating an optimization control strategy adapting to different working conditions.

The invention discloses an SF6 degradation device and method based on gas-liquid two-phase dielectric barrier discharge plasma. The device comprises a gas inlet control module, a dielectric barrier discharge reaction module, an alkaline solution tank and an alkaline solution supply module, the gas inlet control module comprises a gas distributing and mixing unit, an SF6 gas cylinder and an inert gas cylinder, wherein the SF6 gas cylinder and the inert gas cylinder are connected with the gas distributing and mixing unit. The dielectric barrier discharge reaction module comprises a dielectric barrier reactor and a plasma power supply externally connected to the dielectric barrier reactor, and the dielectric barrier reactor is used for exciting inert gas in the mixed gas into plasma by using an electric field and degrading SF6 gas in the mixed gas based on the electric field and the plasma to obtain low-fluorine sulfide. The plasma is utilized to excite the alkaline solution to generate hydroxyl ions, the low-fluorine sulfide is degraded based on the hydroxyl ions, and degraded tail gas is obtained; and the alkaline solution tank is connected with a gas outlet of the dielectric barrier reactor. According to the invention, efficient harmless degradation of SF6 can be realized.

The invention discloses a gas mixing control device for an LPG (Liquefied Petroleum Gas) generator set, which relates to the technical field of generator set operation control, and comprises a gas engine for realizing accurate mixing proportion control under the matching of a proportion dynamic response component, predicting the optimal gas mixing proportion and flow demand under the current working condition, and controlling the gas engine to operate according to the optimal gas mixing proportion and flow demand. When the propane content in the LPG is increased, the model prediction controller properly reduces the gas inflow and increases the air amount, sufficient combustion is ensured, the mixing proportion and flow can be rapidly corrected, the combustion process is rapidly recovered to be stable, it is ensured that the gas engine stably operates under different loads, the whole device forms flow balance and stable operation, and the service life of the gas engine is prolonged. Under different gas sources and LPG component differences, effective components actually participating in combustion are accurately judged, so that the needed gas and air amount is accurately calculated, accurate mixing proportion control is achieved, and meanwhile accurate control over the mixed gas mixing process is achieved under the cooperation of an adjusting control assembly.

The invention discloses dust removal equipment for dust explosion prevention and a dust removal method thereof, and relates to the field of dust removal equipment.The dust removal equipment comprises a dust removal box, a plurality of dust removal cloth bags in the dust removal box and a treatment mechanism for dust explosion prevention, the treatment mechanism is composed of a gas mixing assembly, a scraping assembly and a vibration assembly, and a filter bag top frame is connected with a vibration pipe frame through the vibration assembly; the gas mixing assembly is communicated with the dust removal box through a gas inlet pipe, the gas mixing assembly is used for mixing dusty gas and inert gas and preliminarily removing large-particle dust, and the scraping assembly is arranged below the gas mixing assembly and scrapes the filtered large-particle dust; and the vibration assembly is used for periodically vibrating the dust removal cloth bag after the scraping assembly is detached so as to remove fine dust attached to the inner wall of the dust removal cloth bag. Inert gas is introduced and fully mixed before entering the dust removal box, and primary large-particle dust is filtered, so that the oxygen concentration is reduced, and dust explosion is effectively prevented.

A cell incubator system comprising a housing having an internal chamber having a controlled temperature and gas mixture therein appropriate for the growth of particular cells for incubation of the particular cells in one or more cell culture vessels in the internal chamber and a plurality of cell operation stations in the internal chamber. The stations receive plates having wells for holding cells and wherein the cell operations stations perform operations on cells in the wells. The system has a robotic transport for moving plates from one station to another.

The invention discloses a disilane mixed gas dissolving and mixing system and a control method, and relates to the technical field of gas mixing preparation, the disilane mixed gas dissolving and mixing system comprises seven modules, a storage module realizes accurate pressure control through a honeycomb gas storage tank matrix, and the tank wall adopts a nano composite structure for corrosion prevention; the premixing module forms a chaotic flow field by using a double-helix micro-channel and pulse injection; the reaction module is combined with supercritical and electromagnetic resonance to accelerate the reaction; the monitoring module fuses multispectral detection; the control system is based on deep reinforcement learning, in addition, a gradient condensation-membrane distillation separation module, a bionic safety interlocking module and other modules are further arranged, and all the modules cooperate to achieve efficient mixing and production. According to the device and the method, high-precision preparation of disilane mixed gas, precise pressure-controlled material storage, molecular-level efficient mixed reaction, multispectral precise monitoring, intelligent regulation and control, stability guarantee, high safety interlocking and intelligent maintenance are realized, faults can be reduced, the product quality and the production efficiency are improved, and the cost is reduced.

The invention relates to a high-flow gas mixing system and method and semiconductor process equipment. The large-flow gas mixing system comprises a first gas input unit, a second gas input unit, at least one first flow control unit, at least one second flow control unit, a first gas mixing unit, a first concentration analysis unit, a second gas mixing unit, a second concentration analysis unit, a first gas output unit and a second gas output unit. The flow control device has the advantages that the first gas input unit is communicated with the plurality of first flow control units, the second gas input unit is communicated with the plurality of second flow control units, and the plurality of second flow control units are used for controlling the flow at the same time, so that the flow control precision is improved, and the concentration precision is further improved; the first gas mixing unit is respectively communicated with the first flow control unit and the second flow control unit, and the first gas and the second gas are primarily mixed through the first gas mixing unit, so that the concentration uniformity of the whole system is improved.

The invention discloses a multi-mode gas mixing device, relates to the technical field of gas mixing, and solves the problems that when an existing gas mixing cabinet does not have external power for mixing, the mixing efficiency is low, the mixed gas is discharged while the gas is mixed, the condition of non-uniform mixing is easily generated, the working mode is single, and the mixing efficiency is low. The device comprises a bottom plate, a gas mixing cabinet is arranged at the top end of the bottom plate, a control cabinet is arranged on one side of the gas mixing cabinet, and a gas mixing tank and a gas storage tank are arranged in the gas mixing cabinet. Through cooperative work of the structures, gas mixing can be more uniform, the gas mixing speed is increased, the use flexibility of the gas mixing device is improved, the gas mixing device has multiple different working modes, when the pressure of gas in the tank body is too high, the gas can be rapidly discharged from the tank body, and potential safety hazards are avoided.

The embodiment of the invention provides a high-temperature and high-humidity flue gas generation device. A first carrier gas pipeline is provided with a first carrier gas flow controller and a permeation humidification module; the standard gas pipeline is provided with a standard gas flow controller; the second carrier gas pipeline is provided with a second carrier gas flow controller; the output ends of the first carrier gas pipeline and the standard gas pipeline are communicated with the input end of the gas mixing pipe; the output end of the gas mixing pipe is communicated with the input end of the target gas pipeline; a water bath temperature control part of the permeation humidification module heats the carrier gas to a first target temperature, wherein the first target temperature is close to the upper limit of the working temperature range of the dew-point instrument; a target gas temperature control part on the target gas pipeline heats the target gas to a second target temperature higher than the first target temperature; the control module is used for controlling the first carrier gas flow controller to convey carrier gas with fixed flow, adjusting the carrier gas flow conveyed by the second carrier gas flow controller and adjusting the standard gas flow conveyed by the standard gas flow controller so as to adjust the humidity and the concentration of target gas.

The invention relates to the technical field of oil nozzles, in particular to an efficient atomization injection system for a direct injection oil injector in a cylinder. According to the technical scheme, an injection execution unit adopts a laser-cladded asymmetric injection hole array, fuel oil is evenly distributed in a combustion chamber through aperture gradient distribution and logarithmic spiral arrangement, and the oil-gas mixing effect is enhanced. The dynamic pressure adjusting unit is integrated with an MEMS film sensor array and a fuzzy neural network controller, a sensor can accurately monitor fuel oil pressure in real time, and the controller is based on a 7-12-3 type BP network and can rapidly and accurately adjust fuel injection pressure according to the working condition of an engine through mass data training. The fuel oil pretreatment unit comprises an ultrasonic cavitation device and a graded heating system, the ultrasonic cavitation device reduces the viscosity of fuel oil, and the graded heating system accurately controls the temperature by means of a PTC heater, a semiconductor laser and a vortex generator. The three units work cooperatively, the fuel oil atomization and combustion efficiency is greatly improved, pollutant emission is reduced, and the engine performance is remarkably improved.

The invention provides a gas mixing station equipment monitoring method based on intelligent fuel gas and an Internet of Things system.The method is executed by a fuel gas company management platform of the gas mixing station equipment monitoring Internet of Things system based on the intelligent fuel gas, and the method comprises the steps that gas mixing parameters are determined based on state data and the mixing proportion of gas to be mixed; acquiring gas component data; in response to the condition that the gas component data does not meet the preset condition, performing at least one round of iterative update on the gas mixing parameters based on the gas component data, and determining updated gas mixing parameters; gas transportation parameters are determined based on the output component data of the output gas and the downstream pipeline data; and updating a gas database based on the gas mixing parameters and / or the updated gas mixing parameters, the gas transportation parameters, the downstream pipeline data, the output component data and the receiving component data of the mixed gas received by the downstream gas pipeline. By means of the method, the uniformity of the mixed gas can be monitored in time, and it is ensured that the mixed gas is kept uniform in the mixing process and the transportation process.

The invention discloses a combustion chamber wall surface pit array structure design method and a combustion chamber. The method comprises the following steps: extracting a three-dimensional fluid model and carrying out bench test; establishing and verifying an in-cylinder combustion and emission simulation model; performing temperature field bench test on the cylinder cover, the piston and the cylinder sleeve; establishing and verifying a heat transfer simulation model; establishing a heat engine coupling simulation model; parameterization design is conducted on the pit array structures on the piston, the cylinder sleeve and the cylinder cover, a collaborative optimization mathematical model of pit array structure design is established, an optimal solution set is obtained, and typical solutions are selected; key parts in the typical solution are machined, an installation test is carried out, and the optimal pit array structure design scheme is obtained through the test. According to the pit array structure obtained through the collaborative optimization design method, the weight of components can be reduced, a turbulent layer can be formed on the near wall face of the combustion chamber to promote oil-gas mixing, then nitric oxide and particulate matter are reduced, and the combustion performance of an engine is improved.

Systems and methods presented herein provide for a screw conveyor adsorption moving bed that separates carbon dioxide from a gas mixture. Adsorbent particles are transported between an adsorption section of the reactor, which can be an outer column, and a desorption section, which can be an inner column. The particle transport is facilitated by the screw conveyor located inside the inner column. The screw conveyor is specially designed to have a hollow screw, shaped as a spiral surface, attached to a central shaft. The screw surface is also equipped with plurality of holes and a flexible edge attachment to seal against the cylindrical surface. The hollow shape allows the gas to flow from the inlet of the shaft to the particles through the holes on the screw, thus creating uniform gas distribution.

The invention discloses a gas mixing venturi tube and a bubble water device, and relates to the technical field of life electric appliances, the gas mixing venturi tube comprises a tube body, the tube body is provided with a main body part, and an inlet section, a gas suction section and an outlet section which are connected with the main body part; the main body part is provided with a contraction section, a throat pipe section and an expansion section, the inlet section is connected with the contraction section, and two ends of the expansion section are respectively connected with the throat pipe section and the outlet section; the main body part is further provided with an air cavity, and the air suction section is communicated with the throat pipe section through the air cavity. According to the gas mixing Venturi tube, the preparation efficiency and quality of bubble water can be improved, and the negative pressure stability of the throat tube section is improved.

The invention discloses a method and system for controlling the liquid level of a separator in the water electrolysis hydrogen production process, and belongs to the technical field of electrolytic bath control. According to the method, the liquid level of a separator serves as a main variable, the water supplementing flow serves as an auxiliary variable, a cascade control system is formed, meanwhile, change values of the pressure of an electrolysis system, the power of an electrolytic bath and the temperature of alkali liquor serve as feed-forward signals and are input into a feed-forward controller, and the output values are summed and then jointly form a feed-forward-cascade control system with the cascade control system. According to the control method, the hydrogen side liquid level and the oxygen side liquid level can be accurately controlled, and the problem that the difference between the hydrogen side liquid level and the oxygen side liquid level is too large due to changes of system pressure, electrolytic cell power, alkali liquor temperature and water supplementing flow is solved; and the problems of equipment damage and even casualties caused by explosion risks due to mixing of gas on the two sides when the liquid level is too low can also be avoided, and economic losses caused by protection shutdown triggered by liquid level high-low alarm can also be avoided.

The invention discloses a high-temperature high-pressure impurity-containing mixed CO2 mineralization reaction device and method.The high-temperature high-pressure impurity-containing mixed CO2 mineralization reaction device comprises a gas supply module, a gas mixer, a mixed gas analysis module, a mineralization reactor, a vacuumizing module and a tail gas treatment module, the gas supply module is used for providing CO2 gas and impurity gas, and the gas mixer is used for mixing the CO2 gas and the impurity gas; the mixed gas analysis module is used for judging whether CO2 gas and impurity gas are uniformly mixed or not, the mineralization reactor is used for simulating a mineralization reaction of a rock sample to be mineralized under the condition of the impurity CO2-containing mixed gas and environment simulation liquid, the vacuumizing module is used for vacuumizing the mineralization reactor, and the tail gas treatment module is used for treating tail gas generated by the mineralization reaction. The device capable of simulating the formation water vapor evaporation environment is developed, so that natural conditions can be reproduced more truly in an experiment, the performance of mineralization reaction under actual geological conditions can be better understood, and the research practicability is improved.

The burner comprises a burner body, a premixing valve body is arranged on the burner body, two mixing cavities are formed in the premixing valve body, and the two mixing cavities are communicated with the premixing valve body. An in-turn pushing piston assembly used for pushing out gas in the two mixing cavities in turn is arranged between the two mixing cavities, the combustor mixes fuel gas and air through the two premixing cavities, and in the mixing process, the mixing effect is more obvious through rotation of stirring blades and compression of the gas; valves for automatically closing or opening the corresponding cavities are arranged, so that when the corresponding cavities send out the mixed gas, feeding of air and fuel gas is stopped; according to the gas mixing device, the mixing quality is guaranteed, the structure is simple, the two cavities compress and stir air and gas in turn, the mixing effect is improved, meanwhile, continuous output of mixed gas can be guaranteed, the utilization rate of the gas is increased, and waste of the gas is reduced.

The utility model discloses a medical gas mixing device which comprises a gas inlet box, an oxygen cavity and an air cavity, the oxygen cavity and the air cavity are arranged in the gas inlet box, electronic pressure gauges are arranged at the positions, corresponding to the oxygen cavity and the air cavity, of the gas inlet box, the electronic pressure gauges are connected with a controller through electric signals, and a first gas collecting hood is arranged in one side of the gas inlet box in a sealed mode. A gas dispersing hood is arranged in the position, located on one side of the first gas collecting hood, of the gas inlet box in a sealed mode, and a second gas collecting hood is arranged in the position, located on one side of the gas dispersing hood, of the gas inlet box in a sealed mode. The controller is used for controlling the output power of the corresponding variable-frequency air pump, so that the oxygen inlet amount and the air inlet amount can be conveniently and timely controlled, and the oxygen and the air are dispersed in different directions and then are intensively mixed for many times, so that the oxygen and the air are uniformly mixed.

The invention relates to a photoacoustic gas sensing system based on a T-type differential Helmholtz structure and a measuring method, and the system comprises a laser emission module which is used for emitting laser; the gas mixing module is used for preparing C2H2 gas with different concentrations; the MTRDH photoacoustic module is used for storing C2H2 gas into the cavity on the basis of a Helmholtz structure in an MTRDH photoacoustic cell, after the C2H2 gas absorbs the laser, an inverted photoacoustic signal is generated, and sound pressure is concentrated at the tail end of the resonance tube in combination with a T-shaped photoacoustic cell structure; and the gas detection module is used for extracting a 2f signal related to the gas concentration according to the sound pressure and carrying out concentration detection by utilizing the 2f signal. According to the invention, the gas detection of concentrated sound pressure distribution, improved SNR and reduced NNEA can be realized.

An ammonia-rich combustion coupled dual-mode prechamber ammonia-fueled engine control system is provided, including an ammonia-fueled engine and an electronic control unit. The ammonia-fueled engine includes a combustion chamber, a dual-mode jet ignition device, and an ammonia injector. The dual-mode jet ignition device includes a prechamber, an air injector, and a fuel injector. When the engine operates, ammonia fuel is firstly injected into the combustion chamber by the ammonia injector to form a rich ammonia-air mixture with air in the combustion chamber. During a compression stroke of the engine, the rich ammonia-air mixture in the combustion chamber is entered into the prechamber through a jet hole. The air injector performs scavenging in the prechamber until a equivalence ratio of prechamber gas mixture is less than 1.0, and then the fuel injector injects fuel into the prechamber forming target mixture. Finally, the target mixture is ignited by the spark plug.

The invention relates to the technical field of natural gas hydrogen doping, and provides a multi-stage natural gas hydrogen doping device and a natural gas hydrogen doping method.The multi-stage natural gas hydrogen doping device comprises a natural gas pipeline, a hydrogen pipeline, a gas mixing pipeline and a PLC control system; a mixer is arranged on the gas mixing pipeline; one end of the natural gas pipeline is connected with the mixer, and the other end is a natural gas inlet end; one end of the hydrogen pipeline is connected with the mixer, and the other end of the hydrogen pipeline is a hydrogen inlet end; the natural gas pipeline comprises multiple stages of natural gas pipelines which are arranged in parallel, and first flow transmitters are arranged on the multiple stages of natural gas pipelines; the hydrogen pipeline comprises multiple stages of hydrogen pipelines which are arranged in parallel, and second flow transmitters are arranged on the multiple stages of hydrogen pipelines. According to the multi-stage natural gas hydrogen doping device, multi-stage flow distribution can be achieved, so that the effect of accurately controlling the hydrogen doping proportion is achieved, hydrogen-doped natural gas can be evenly mixed, and the system can be comprehensively and integrally controlled.

The invention relates to a gas mixing technology, and discloses a gas mixer size optimization method based on deep learning, which comprises the following steps: acquiring design parameters of a gas mixer, and establishing a gas mixer model; performing flow field simulation analysis on the model to obtain performance parameters of the gas mixer under different process parameters; establishing a database for the design parameters, the process parameters and the performance parameters; constructing a neural network prediction model based on the database, updating hyper-parameters of the prediction model based on a reverse update algorithm, obtaining an optimal hidden parameter value, and then obtaining an optimal performance parameter prediction model; and inputting to-be-optimized design parameters and process parameters of the gas mixer into the optimal performance parameter prediction model, and further obtaining optimal design parameters under the optimal performance parameters of the gas mixer based on the model. The invention also discloses a gas mixer. The optimization method is high in accuracy and optimization efficiency, and the gas mixer is simple in structure and good in mixing effect.

The invention relates to a boiler gas mixing and blowing device which comprises a blower, a blowing pipe, a filter screen, a gas delivery pipe, a mixing chamber and a combustion chamber which are connected in sequence. An outlet of the fuel gas supply pipe is connected with the gas conveying pipe; a brush further abuts against the filter screen; the filter screen rotates through the motor under the action of the transmission assembly, so that the position, connected with the air conveying pipe and the air supply pipe, of the filter screen is changed, and the filter screen moves relative to the brush. An axially-arranged moving plate is installed in the gas conveying pipe, one side of the moving plate vertically extends out of an adjusting plate, the adjusting plate is arranged at an outlet of the fuel gas conveying pipe, and the communicating area of the fuel gas conveying pipe and the gas conveying pipe is adjusted through movement of the adjusting plate; when the output air pressure of the air feeder is increased, the farther the moving distance of the adjusting plate is, the larger the communication area of the fuel air feeding pipe and the air conveying pipe is, and the larger the flow of fuel gas entering the air conveying pipe is. Therefore, the flow of the fuel gas is automatically adjusted along with the flow change of the air flow.

The utility model relates to the technical field of oil fume suction equipment, and provides a cleaning assembly and a range hood, and the cleaning assembly comprises a liquid storage part, a cleaning liquid container and an output pump. Wherein the liquid storage part is provided with an inlet end, a liquid outlet end and an air outlet end, and is arranged in the range hood; the cleaning liquid container is communicated with the inlet end and is suitable for providing cleaning liquid; the output pump is provided with a liquid inlet, a foam outlet and an air inlet, the liquid inlet is communicated with the liquid outlet end, the air inlet is communicated to the air outlet end, and the foam outlet outputs a liquid-air mixture. According to the cleaning assembly provided by the utility model, the output pump can pump the cleaning liquid in the cleaning liquid container into the liquid storage part so as to supplement the cleaning liquid for the liquid storage part, and meanwhile, the foam outlet of the output pump can also pump the cleaning liquid out of the liquid storage part and output a liquid-gas mixture after the cleaning liquid is mixed with gas, so that the range hood is cleaned; according to the range hood cleaning assembly, when the range hood is cleaned by the cleaning assembly, the range hood can be cleaned without arranging two water pumps, the structure is simpler, and the cost can be saved.

The utility model discloses a novel tetrahydrothiophene concentration measuring device, which relates to the technical field of tetrahydrothiophene detection and comprises a natural gas pipeline, the rear side of the natural gas pipeline is fixedly connected with an L-shaped pipeline I, and the rear end of an L-shaped pipeline III is fixedly connected with a gas mixing chamber. The rear side of the natural gas pipeline is respectively provided with a gas mixing chamber unit, a compressed air preparation unit, a natural gas decompression preparation unit, a sample gas detection unit, a control unit and a communication unit. Air and natural gas are mixed in equal volume, an aerobic detection environment is created, and the working principle of an electrochemical tetrahydrothiophene detector is matched; according to the electrochemical tetrahydrothiophene concentration detector, the tetrahydrothiophene concentration of the mixed gas is accurately detected, then the tetrahydrothiophene concentration of the natural gas is deduced according to the isovolumetric proportional relation, reliable working conditions are created for the electrochemical tetrahydrothiophene concentration detector, continuous measurement can be achieved, detection data are stable, repeatability is good, and precision is high.

The utility model relates to the technical field of tail gas denitration reactors, in particular to a high-stability tail gas denitration reactor which comprises a denitration bin and a mixing bin, a first flow dividing pipe is installed at the end, located in the mixing bin, of the smoke inlet pipe, a second flow dividing pipe is installed at one end of the ammonia gas inlet pipe, through holes are evenly distributed in the upper face and the lower face of the flow dividing bin, a sealing ball used for blocking an opening in the end of the inner pipe is installed at the bottom end of a limiting rod, and a vertical pipe is installed on a second partition plate. When the pressure pump operates, gas located below the first partition plate is pressurized and fed into the inner pipe, mixed gas is dispersed into fine bubbles when discharged through the through holes, the bubbles gather and meet at the lower portion of the second partition plate, then the preliminarily mixed gas is mixed again, and the rotating fan blades mix the gas again. Compared with a denitration reactor with a rack, the denitration reactor has the advantages that gas mixing is more sufficient, and stable denitration is effectively guaranteed.

The invention provides an operation method and system for taking carbon dioxide as underground salt cavern gas storage / hydrogen storage cushion layer gas, and the method comprises the steps: firstly obtaining a shaft parameter and a cavity parameter, and calculating the physical property parameters of carbon dioxide at different temperatures and pressures through a data analysis platform; establishing a physical simulation model of the gas / hydrogen storage based on the wellbore parameters and the cavity parameters, solving the physical model according to the physical property parameters and the set boundary conditions, and determining effective salt cavity temperature and pressure data; based on the salt cavern temperature and pressure data and the natural gas / hydrogen physical property parameters, a dynamic gas injection and production quantity operation model of the gas / hydrogen storage is determined; different boundary conditions are set to simulate the gas mixing degree of cushion gas, and the injection-production boundary conditions meeting the requirements are selected as target injection-production parameters. According to the scheme, the operation state of the gas / hydrogen storage with carbon dioxide as cushion gas can be accurately modeled, the reliable dynamic gas injection and production amount is calculated in real time, the injection and production rate is optimized based on the gas mixing degree, and assistance is provided for the gas / hydrogen storage injection and production site.

The utility model discloses a flame cutting torch appliance adopting natural gas, which relates to the technical field of cutting torch appliances, and comprises a cutting torch body, the outer wall of the top of the cutting torch body is fixedly connected with a connecting column, and the outer wall of the bottom of the connecting column is provided with threads and is in threaded connection with a cutting torch sleeve. A protection assembly is arranged on the outer wall of the bottom of the cutting nozzle sleeve, and a fuel gas flux adjusting assembly communicating with the interior of the cutting nozzle sleeve is arranged on the right side wall of the cutting nozzle sleeve. By means of the protection assembly, the protection position of the hollow moving column is adjusted, the safety problem caused by metal spark splashing is avoided, meanwhile, the spiral gas mixing channel and the fuel gas groove can effectively increase the gas mixing degree and the gas flow speed, sprayed flames are more stable, and the safety performance of the burner is improved. And the arranged fuel gas flux adjusting assembly can automatically adjust the opening degree of the electromagnetic valve and accurately control the flux of fuel gas, so that fuel gas resources are saved.

The invention belongs to the technical field of gas pipe networks, and particularly relates to a performance test system and method based on an urban gas pipe network connecting piece and key equipment sealing material in a hydrogen-doped environment. The system comprises a hydrogen cylinder, a natural gas cylinder, a gas mixing tank, a compressor, a horizontal stainless steel tank, an electric tracing band, a pressing sheet clamping device, a prestress loading measuring device, a hanging sheet clamping device, a pressure transmitter, a thermocouple temperature transmitter, a computer, a nitrogen cylinder, a flame arrester and a hydrogen concentration detector. The hydrogen cylinder and the natural gas cylinder are respectively communicated with the gas mixing tank, an outlet of the gas mixing tank is communicated with the horizontal stainless steel tank after passing through the compressor, and the nitrogen tank is respectively communicated with the horizontal stainless steel tank, the hydrogen cylinder and the natural gas cylinder; an electric tracing band, a pressing sheet clamping device, a prestress loading measuring device, a hanging sheet clamping device, a pressure transmitter and a thermocouple temperature transmitter are arranged in the horizontal stainless steel tank. The system achieves the purpose of constant temperature control.