2558 results about "Gas mixing" patented technology

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 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.

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 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.

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 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 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 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.

The utility model discloses a mixed gas distribution device which comprises a bottom plate, a base fixedly installed at the top of the bottom plate, a mixing box fixedly installed at the top of the base, an argon box fixedly installed at the top of the bottom plate, a first sucking pump fixedly installed at the top of the argon box, and a first gas suction pipe fixedly installed at the suction end of the first sucking pump. The end, away from the first sucking pump, of the first air suction pipe extends into the argon box, and a first air feeding pipe is fixedly installed at the discharging end of the first sucking pump. The device is reasonable in design and good in practicability, chlorine and argon which are added into the mixing box can be fully stirred, the gas mixing efficiency is improved, the spiral gas conveying hose is used for enabling the mixed gas in conveying to continuously rotate, the mixed gas is prevented from being layered in the conveying process, the gas mixing effect is improved, and the service life of the device is prolonged. And the air pressure value in the mixing box can be increased by controlling the piston plate to move downwards, so that gas mixing is accelerated, and the mixed gas can be conveniently output for use.

The invention belongs to the technical field of pump testing, and provides a gas-liquid two-phase flow pump closed test device and method, the device mainly comprises a water tank, a water delivery pipeline, a gas-water uniform mixer, a water return pipeline, an oil tank, an oil delivery pipeline, an oil-gas uniform mixer, an oil return pipeline and a gas delivery pipeline; the water tank serves as a water source storage unit, an inlet of the water tank is connected with the water conveying pipeline, and water is led out and conveyed to the testing platform. And the outlet of the water return pipeline is connected with the water tank. And the gas-water uniform mixer is mounted on the water conveying pipeline. The design of two test loops is adopted, the two test loops are used for testing the gas-water mixing working condition and the oil-gas mixing working condition respectively, the performance test of the gas-liquid two-phase flow pump corresponding to the two working conditions in actual production is simulated, the deviation caused by performance conversion only after the clean water test is adopted is avoided, and the pump performance test precision is improved.

The invention discloses a carbonizer and a bubble water device, and relates to the technical field of overflowing carbonation bubble water preparation.The carbonizer comprises a gas mixing box body, a gas inlet pipe, a liquid inlet pipe and a liquid outlet pipe, a containing cavity is formed in the gas mixing box body, and a plurality of partition plates are arranged in the containing cavity at intervals; the partition plates divide the accommodating cavity into an inlet chamber, a throat pipe channel and a turbulent flow channel which are communicated in sequence; the air inlet pipe and the liquid inlet pipe are communicated with the turbulent flow channel inlet chamber; the liquid inlet pipe is connected to the rear end of the turbulent flow channel; the sectional area of the throat pipe channel is smaller than that of the inlet chamber and that of the turbulent flow channel; the turbulent flow channel extends from the side close to the throat pipe channel to the side away from the throat pipe channel, and a plurality of turbulent flow units are arranged in the turbulent flow channel and are arranged at intervals in the extending direction of the turbulent flow channel. The technical scheme provided by the invention is used for improving the carbonization concentration of the sparkling water, so that the taste of the sparkling water is improved.

The invention discloses an air environmental pollution detection sampling system, and relates to the field of environmental detection.The air environmental pollution detection sampling system comprises a sampling disc, a lifting rod, a base, a power box and a collecting pipe, the interior of the sampling disc is of a hollow structure, the center of the bottom of the sampling disc is fixedly connected with the top of the lifting rod, and the bottom of the lifting rod is fixedly installed on the surface of the base; exhaust pipes are fixedly arranged at the position, close to the middle, in the sampling disc, the exhaust pipes are annularly arranged in the sampling disc at equal intervals, and the two ends of each exhaust pipe are of a sealed structure. According to the invention, a plurality of groups of fixed exhaust pipes are arranged, and the plurality of groups of fixed exhaust pipes are linearly arranged at the top edge of the sampling disc at equal intervals, so that during sampling, the fixed exhaust pipes can extract air in different directions in one area, and the air enters the disc-shaped gas mixing cavity to be mixed; and finally, the mixed air enters a collecting pipe to be collected, so that accidental errors can be eliminated, and the accuracy of an experimental result is improved.

The utility model provides a gas mixing device and semiconductor equipment, including: a gas mixing pipe and at least one gas guide pipe, the gas guide pipe is arranged on the side wall of the gas mixing pipe and extends into the gas mixing pipe, the gas guide pipe located in the gas mixing pipe is provided with at least one gas outlet hole, and the orientation of the gas outlet hole is consistent with the flow direction of carrier gas in the gas mixing pipe. The gas mixing device is simple in structure, low in manufacturing cost and convenient for pipeline modification and maintenance. Besides, different process gases are respectively conveyed to the gas mixing pipe through the plurality of gas guide pipes, the process gases can be sprayed out along the flowing direction of the carrier gas so as to be more stably blended into the carrier gas, the process gases and the carrier gas are fully and uniformly mixed through the laminar flow distribution assembly, and the mixing pipe effectively reduces the pressure difference by increasing the through-flow sectional area and reducing the flow speed, so that the gas mixing efficiency is improved. And the carrier gas and the process special gas are stably and uniformly mixed.

The invention relates to a combustor and a gas stove. The combustor comprises a furnace end, a gas inlet and a gas outlet, an inner ring gas mixing cavity and a middle ring gas mixing cavity are defined between the inner ring fire cover and the furnace end, and the middle ring gas mixing cavity is arranged on the periphery of the inner ring gas mixing cavity in a surrounding mode; inner ring fire holes are formed in the top surface of the inner ring fire cover; the outer ring fire cover is arranged on the periphery of the inner ring fire cover in a surrounding mode at intervals, and an outer ring gas mixing cavity is defined between the outer ring fire cover and the furnace end; a top cover is arranged in the center of the top face of the inner ring fire cover in a protruding mode and covers the top of the inner ring fire hole. An inner ring fire gap is formed between the outer peripheral edge of the top cover and the top face of the inner ring fire cover, the inner ring fire holes are communicated with the inner ring fire gap, fuel gas in the inner ring gas mixing cavity can be combusted at the inner ring fire gap to form inner ring gap fire, flames of the inner ring gap fire are mutually connected, and the good flame stabilizing effect is achieved. And therefore, the flame stability of the combustor under soft fire combustion or extremely soft fire combustion is improved, and the low-temperature cooking requirement is met.

The invention discloses a gas mixing tank for realizing uniform mixing of hydrogen and natural gas and a design method, and relates to the technical field of natural gas hydrogen doping, the gas mixing tank comprises a tank body and at least two mixing units, all the mixing units are stacked in the tank body, and the gas passing directions of every two adjacent mixing units are different. According to the hydrogen and natural gas mixing device, the multiple mixing units are arranged in the tank body in the stacked mode, the gas passing directions of every two adjacent mixing units are different, when the gas passing directions are different, natural gas and hydrogen are promoted to be mixed in a crossed mode, uniform mixing of the hydrogen and the natural gas is achieved, and the flowing loss of the gas in the flowing process is reduced.

A blower (1) for a fuel cell arrangement for recirculating a gas mixture used for operating the fuel cell arrangement is described, comprising a drive motor (7, 8, 9) which has a rotor (9) coupled to a motor shaft (7) and a stator (8) arranged radially outside the rotor (9). An annular channel (10) is provided radially between the rotor (9) and the stator (8) for conveying the gas mixture from an inlet side to an outlet side of the annular channel (10). A blower impeller (5) coupled to the motor shaft (7) is provided in the region of the outlet side of the annular channel (10) to convey the gas mixture from the inlet side to the outlet side of the annular channel (10) when rotating. The blower (1) further comprises a suction jet arrangement (16) with a nozzle for generating a high-velocity gas flow, which is integrated into the flow path of the blower (1) to cause a flow through the blower (1).

The invention relates to a coal-electricity coupling hydrogen production system and method in an electric power spot market environment, and the system is used for determining load output data of a coal-fired generator set according to a market price signal and a scheduling instruction through a coal machine power generation module. And the water electrolysis hydrogen production module is used for receiving the load output provided by the coal machine power generation module and supplying power to the alkaline electrolytic bath and the proton exchange membrane electrolytic bath through power conversion equipment to prepare hydrogen. And the hydrogen storage module is used for receiving the hydrogen of the water electrolysis hydrogen production module, purifying the hydrogen and storing the hydrogen in a hydrogen storage tank area. And the gas turbine hydrogen doping module is used for conveying hydrogen to the gas mixing station and the combustion-steam combined cycle unit through a pipeline according to the hydrogen storage amount of the hydrogen storage module and the load requirement of the gas turbine. The energy utilization efficiency of the coal-electricity coupling hydrogen production system is improved, and the problem that the coal-electricity coupling hydrogen production system is low in resource utilization rate and further low in economic benefit when power is supplied beyond the selling negative electricity price in the related technology is solved.

A blower (1) for a fuel cell assembly for recirculating a gas mixture used for operating the fuel cell assembly is equipped with a drive motor (7, 8, 9) comprising a rotor (9) coupled to a motor shaft (7) and a stator (8) arranged radially outside the rotor (9). An annular channel (10) is provided radially between the rotor (9) and the stator (8) for conveying the gas mixture from an inlet side to an outlet side of the annular channel (10). A blower impeller (5) coupled to the motor shaft (7) is provided in the region of the outlet side of the annular channel (10) to convey the gas mixture from the inlet side to the outlet side of the annular channel (10) when rotating. Furthermore, a flow guide device (14) is provided to impart a circumferential swirl to the gas mixture entering the annular channel (10).Furthermore, an arrangement for separating water from the gas mixture is provided, which has at least a section-wise radial widening of the radially outer wall of the annular channel (10).

The invention relates to an operating method for a device (2) with a fan (8) for circulating a gas mixture in a treatment chamber (4) of the device (2), wherein the device (2) is operated at least partially depending on a relationship between an electrical input power of the fan (8) and a density of the gas mixture, wherein the operating method comprises a plurality of operating modes and only in some of these operating modes is a controlled operation of the fan (8) for circulating the gas mixture in the treatment chamber (4) desired, characterized in that the fan (8) in the at least one operating mode in which a circulation of the gas mixture in the treatment chamber (4) is not desired is operated in a measuring mode in which the aforementioned relationship can be determined and used for the operation of the device (2) and at the same time a circulation of the gas mixture in the treatment chamber (4) is smaller than in the controlled operation of the fan (8).Furthermore, the invention relates to a device (2) with a fan (8).