63 results about "Oxygen regulation" patented technology

The invention relates to the technical field of air conditioner environment control, in particular to an energy-saving pressure swing adsorption air conditioner type intelligent oxygen supply system based on a plateau area. The system comprises a data acquisition module for acquiring data: a suspected interference position analysis module for screening suspected interference positions according to synchronization abnormity of oxygen concentration between monitoring positions and analyzing the abnormity possibility of oxygen concentration deviation; the ventilation interference analysis module obtains the ventilation interference possibility through the continuous distribution of the suspected interference position and the abnormal possible descending trend, and measures the ventilation interference intensity in combination with the current ventilation interference position distribution and the air pressure difference fluctuation; and the oxygen regulation and control module is used for determining the weight of each position based on the ventilation interference possibility and the interference intensity and evaluating comprehensive oxygen concentration regulation and control. According to the method, the comprehensive monitoring result of the oxygen concentration is adjusted by analyzing the abnormal and ventilation interference influence conditions of multiple monitoring positions, the oxygen supply precision is improved, and the accuracy and reliability of indoor oxygen concentration control in the plateau area are guaranteed.

The invention relates to the technical field of air conditioners, and particularly discloses an indoor'temperature-humidity-oxygen concentration 'regulation and control unit and a control method. The regulation and control unit comprises an air conditioner indoor unit and an air conditioner outdoor unit which are connected with the oxygen supply pipe through a refrigerant air pipe and a refrigerant liquid pipe respectively, and the indoor unit and the outdoor unit are integrated with a plurality of components. Through specific connection, a temperature, humidity and oxygen concentration regulation and control channel and a total air circulation channel are formed. The control method comprises the following steps: continuously monitoring indoor parameters through the sensor group, comparing target parameters, controlling corresponding parts to start and stop by the control module, and finely regulating according to a threshold value after reaching the standard. The unit integrates the temperature, humidity and oxygen regulation and control functions, adapts to the plateau low-temperature and low-pressure environment, achieves indoor temperature-humidity-oxygen collaborative optimization, improves the environment comfort, and reduces the equipment cost and energy consumption.

The invention discloses a fermentation process for shortening a fermentation period and efficiently synthesizing Ectoine. The fermentation process comprises the following steps: screening and activating high-yield strains, preparing a fermentation culture medium, performing fermentation culture, performing sectional dissolved oxygen regulation and control, performing double-stage pH dynamic regulation and control, performing carbon-nitrogen ratio dynamic regulation based on metabolic flow analysis, performing osmotic pressure gradient induction in the later stage of fermentation, and extracting and purifying a product. According to the fermentation process for shortening the fermentation period and efficiently synthesizing the Ectoin, the expression quantity of key enzymes for synthesizing the Ectoin is increased by 80% or above compared with that of an original strain through the Halomonassp.ECT-09 strain bred through ultraviolet-nitrosoguanidine compound mutation, the basic yield reaches 35 g / L, a foundation is laid for high yield, and the method is suitable for industrial production. A glucose-trehalose mixed carbon source and a yeast extract-ammonium nitrate mixed nitrogen source are adopted, and an L-aspartic acid-L-asparagine mixed precursor is added, so that the metabolic pathway is shortened, and the loss of an intermediate product is reduced.

The invention discloses a fishery water body environment dissolved oxygen control optimization method, and belongs to the technical field of control optimization, and the method comprises the steps: S1, constructing a fishery water body management dissolved oxygen PID control system; s2, introducing an improved barber optimization algorithm; s3, setting a dissolved oxygen PID control parameter in the fishery water body management dissolved oxygen PID control system by using an improved barber optimization algorithm, and obtaining an optimal PID control parameter through optimization; and S4, setting the three optimal control parameters obtained through optimization by using the improved barber optimization algorithm as parameters of a dissolved oxygen PID controller in the fishery water body management dissolved oxygen PID control system, and optimizing a dissolved oxygen regulation control effect. By introducing the improved barber optimization algorithm, higher optimization precision is realized, and a PID controller parameter solution with better performance is obtained, so that the dissolved oxygen concentration of the water body can be more accurately and stably maintained, and a reliable technical guarantee is provided for fishery water body dissolved oxygen management.

The application discloses a kind of organic waste composting methods for reducing nitrogen loss, belong to the technical field of organic waste resource utilization, in different stages of organic waste fermentation, calcium peroxide is added, on the one hand, can maintain the oxygen environment of heap system, inhibit denitrification;On the other hand, by regulating the pH environment in system, reduce ammonia volatilization.This double synergistic effect, continue to increase efficiency in the whole composting fermentation process, oxygen regulation breaks down the gaseous nitrogen loss caused by denitrification from the root, pH regulation effectively inhibits free ammonia volatilization, the two effects cooperate with each other, throughout the whole process, can realize the efficient nitrogen conservation of organic waste raw materials from fermentation start to stable decomposition, effectively solve the problems that existing nitrogen conservation technology is not good, cost is high, easy to cause secondary pollution and affect composting maturity etc..

The application discloses an oxygen adjusting structure and a respiratory treatment device, and relates to the technical field of respiratory treatment devices, in particular to an oxygen adjusting structure and a respiratory treatment device. The oxygen adjusting structure comprises a shell, an air inlet arranged on one end of the shell and used for connecting an oxygen source, an air outlet arranged on the other end of the shell and used for connecting a patient end, and an oxygen adjusting mechanism arranged in the shell and connected between the air inlet and the air outlet and provided with a flow stabilizer. The flow stabilizer can effectively stabilize the oxygen flow, avoid turbulent flow of the oxygen flow, and make the oxygen flow flow smoothly in a short distance, thereby ensuring accurate measurement of the oxygen flow, effectively shortening the length of the air guide channel in the oxygen adjusting structure, providing guarantee for accurate measurement of the oxygen consumption, significantly reducing the distance between the flow regulator and the flow meter, effectively reducing the volume of the oxygen adjusting structure, and being more conducive to miniaturization and multifunctionalization of the respiratory treatment device.

A modular hydrogen generation system (“system”) comprises a high-pressure containment vessel (“vessel”) defining a hydrogen plenum. The system also comprises a hydrogen generation insert (“insert”) shaped to be received in the hydrogen plenum. The insert includes a cover, one or more proton-exchange membrane (“PEM”) cells, an oxygen-water separator; and a passive dual regulator with relative differential venting (“regulator”). The insert is inserted into the hydrogen plenum such that hydrogen and oxygen can be produced at an interior pressure of from 200 to 6,000 psi. The regulator receives oxygen from the oxygen-water separator and hydrogen from the hydrogen plenum and regulates pressure imbalances between an oxygen-side of the system, vents oxygen to an exterior of the high-pressure containment vessel, and vents hydrogen to an exterior of the vessel to allow collection of hydrogen and oxygen and avoid rupture of the one or more PEM cells during operation.

The invention relates to the technical field of agricultural cultivation, in particular to a root oxygen regulation-oriented Chinese rose cultivation system and method, and aims to solve the problems that existing cultivation is limited by fixed planting density, so that plant space competition is limited, oxygen-enriched liquid is difficult to uniformly diffuse in a deep root system area due to shallow spraying, and hypoxia decline of a root system is caused. The system comprises a cultivation frame, a moving module, a cultivation module and a regulation and control module. The moving wheel set is connected with the driving module so as to drive the moving chain set arranged on the cultivation frame, and the cultivation plates bearing Chinese roses are arranged on the chain set. A regulation and control module containing the root oxygen unit and the regulation and control unit is arranged beside the cultivation frame and used for intensively regulating and controlling the oxygen content of the root system when the cultivation disc moves; the automatic circulation of dynamic and static decoupling is realized, and the plant circulation is promoted to eliminate the disadvantage of space competition; meanwhile, the leakage risk of a complex pipe network is avoided, fixed-point intervention is carried out through side centralized equipment, matrix hardening is accurately broken, deep waste gas replacement and uniform diffusion of enriched oxygen are achieved, and the root system is effectively rejuvenated and weakened.

The present invention relates to a breathing device (2) comprising: an air inlet (10) designed to supply ambient air to the breathing device (2); an oxygen inlet (8) designed to supply oxygen to the breathing device (2); a mixing section (34) designed to receive ambient air from the air inlet (10) and oxygen from the oxygen inlet (8), mix the ambient air and oxygen, and output oxygen-enriched air as a ventilation airflow into a ventilation airflow path (39); an oxygen regulating valve (30) disposed between the oxygen inlet (8) and the mixing section (34) and enabling regulation of the flow rate of oxygen entering the mixing section (34) from the oxygen inlet (8); and an integrated combined sensor (60) designed to measure the thermal conductivity, pressure, temperature, and humidity of the ventilation airflow downstream of the mixing section (34), and to determine the oxygen content of the ventilation airflow based on the measured pressure, measured temperature, and measured humidity, and to provide the oxygen content as a measurement result. The breathing device (2) also has a monitoring device (66) which is designed to: receive measurement results provided by oxygen measuring devices (32, 40a, 40b), ventilation gas pressure sensor (45), ventilation gas temperature sensor (42) and / or ventilation gas humidity sensor (43) and integrated combination sensor (60); compare the measurement result of the oxygen content in the ventilation flow received from the integrated combination sensor (60) with a predefined oxygen content in the ventilation flow; and control the oxygen regulating valve (30) to regulate the oxygen content in the ventilation flow if the measurement result of the oxygen content in the ventilation flow received from the integrated combination sensor (60) is different from the predefined oxygen content in the ventilation flow.

The invention discloses a fishery oxygenation control optimization method based on a meta-heuristic algorithm, and belongs to the technical field of control optimization methods, and the method mainly comprises the following steps: S1, constructing a fishery oxygenation PID control system; s2, constructing an improved white sheep seat element heuristic algorithm module; s3, optimizing and setting parameters; and S4, parameter setting and effect optimization. According to the method, by introducing strategies such as interstellar distant symptoms, emotional outbreak and nebula aggregation, the global optimization and convergence capacity is remarkably enhanced, nearly-zero overshoot of dissolved oxygen adjustment is achieved through the PID controller set through the improved white sheep seat element heuristic algorithm, the response time can be effectively shortened, the steady-state error can approach zero, and the method is suitable for large-scale popularization and application. In this way, energy consumption and accumulative errors can be effectively reduced while rapid and accurate control is guaranteed, and the robustness of a fishery oxygenation PID control system can be remarkably improved.

The invention relates to the technical field of biological treatment of urban domestic sewage, in particular to a stable deep denitrification method for aerobic granular sludge based on a reactor, which is characterized in that the reactor is operated by adopting a gradient water inlet mode combined with a dissolved oxygen regulation and control strategy, that is, short-time rapid water inlet is applied before slow water inlet to create an unbalanced external carbon source supply condition; internal carbon source storage and enrichment of slow-growing microorganisms such as phosphorus-accumulating bacteria and glycogen-accumulating bacteria are promoted, so that the stability of the particle structure is enhanced; the dissolved oxygen of the reactor main body is gradually reduced to 2 mg / L so as to reduce the inward permeation of the dissolved oxygen, increase the internal anaerobic zone and improve the denitrification rate, and meanwhile, a transient high oxygen exposure condition is set at the tail end of the aerobic stage so as to form high hydraulic shear force to further maintain the stability of the particles. The structure regularity, the mechanical strength and the denitrification performance of the aerobic granular sludge are remarkably improved, the average removal rate of ammonia nitrogen and the average removal rate of total nitrogen are stabilized at 97.84% and 88.87% or above respectively, the synchronous nitrification endogenous denitrification efficiency reaches 92.10% or above, and long-term stable operation of the system is guaranteed.

The application provides a wafer-level room-temperature monolayer magnetic semiconductor thin film and a preparation method thereof, and relates to the technical field of two-dimensional magnetic semiconductor material preparation.The present application is based on a three-temperature-zone low-pressure chemical vapor deposition system, and the wafer-level controllable preparation of a single-cell thickness spinel structure Fe2GaO4 thin film is realized through the following steps: the partitioned treatment of Te powder, metal precursors and sapphire substrates in three temperature zones, and the preparation method of sequentially blowing and replacing by inert carrier gas and hydrogen-argon mixed gas, segmented preheating and temperature rising, oxygen regulation and control and in-situ heat preservation annealing.Meanwhile, the prepared Fe2GaO4 thin film has a thickness of only 0.53 nm, a Curie temperature of more than 300 K, intrinsic ferromagnetism at room temperature, clear optical band gap and semiconductor characteristics, and can be widely applied to various new-type spin electronic devices.

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

Lance system for operating an oxygen lance for use in a vessel containing molten steel, the lance system comprising an oxygen line, an oxygen regulation valve and an oxygen tank, which are configured such that when the regulation valve is opened, oxygen is flowing from the oxygen tank through the oxygen line; an oxygen lance comprising a first lance opening which is connected via the oxygen line and the oxygen regulation valve to the oxygen tank; a second lance opening; a substantially tubular body connecting the first lance opening and the second lance opening; wherein the oxygen lance is connected to the oxygen line at the first lance opening, and wherein the oxygen lance is configured such that the oxygen flowing through the oxygen line to the first lance opening is transported from the first lance opening to the second lance opening, wherein the second lance opening is configured such that the oxygen exits the oxygen lance at the second lance opening; an induction coil, wherein the induction coil is configured to heat the oxygen lance in a region of the second lance opening, such that when the oxygen exits the oxygen lance at the second lance opening, the oxygen lance is ignited; the lance system further comprises a manipulator for handling the oxygen lance; wherein the induction coil is supplied with an alternating current by an induction coil driver; wherein the lance system further comprises a flow meter which is configured to measure the mass flow and / or the volumetric flow of the oxygen flowing in the oxygen line; the lance system further comprises a control unit configured to control the oxygen regulation valve, the induction coil driver and the manipulator.

The invention discloses a device and a method for detecting the corrosion resistance of a cementing material by simulating a dynamic seawater impact environment, the device combines the dissolved oxygen regulation (2-8mg / L) of a corrosive medium adding system with the coupling of sulfate reducing bacteria (10-10CFU / mL) through the cooperative regulation of a flow making pump, a wave generator and a guide plate (the concentration deviation is less than or equal to + / -0.05%, and the temperature uniformity is less than or equal to + / -0.3 DEG C); chemical-biological-mechanical three-factor simulation is realized; the test piece fixing frame is of an electric rotating structure (0.5-2r / min), and is matched with dynamic impact to ensure that the test piece is uniformly impacted. According to the method, a corrosion rate curve (R is larger than or equal to 0.95) is fitted by presetting a marine environment template, closed-loop feedback control and an emergency pressure maintaining mode (the data loss rate is smaller than or equal to 0.05%). The device and the method solve the problems of single simulation and low precision in the prior art, the correlation between the detection result and the real marine environment is improved by 85%, and a reliable platform is provided for the corrosion resistance test of the ocean engineering cementing material.

The utility model belongs to the technical field of experimental apparatus, concretely relates to an animal chronic hypoxia experiment device of adjustable oxygen concentration, including the water tank box with the top opening, the hypoxia box with the bottom opening, oxygen concentration detector and oxygen concentration adjusting assembly, the length and width of water tank box are greater than the length and width of hypoxia box respectively, be provided with the animal platform in water tank box, the hypoxia box cover is located in the water tank box, and the animal platform is buckled in, oxygen concentration detector sets up in hypoxia box, is used for detecting the oxygen concentration in hypoxia box, and oxygen regulating assembly includes oxygen delivery piece and vacuum pump, one end of oxygen delivery piece passes through the oxygen delivery piece of the box body in hypoxia box and is located in hypoxia box, the other end of oxygen delivery piece is connected in vacuum pump, and the oxygen concentration in hypoxia box can be adjusted through oxygen regulating assembly, can simulate different degree hypoxia environment, such as plateau hypoxia, hypoxia caused by disease etc., satisfies different experimental demand.

The application discloses a kind of fishery water body environment dissolved oxygen control optimization method, belong to the technical field of control optimization, including S1, constructs fishery water body management dissolved oxygen PID control system;S2, introduce improved barber optimization algorithm;S3, utilize improved barber optimization algorithm to the dissolved oxygen PID control parameter setting in fishery water body management dissolved oxygen PID control system, and the best PID control parameter is obtained by optimization;S4, three optimal control parameters obtained by using improved barber optimization algorithm optimization are set as the parameter of dissolved oxygen PID controller in fishery water body management dissolved oxygen PID control system, and the effect of dissolved oxygen regulation control is optimized.The application introduces improved barber optimization algorithm, higher optimization accuracy is realized, and the PID controller parameter solution with better performance is obtained, so that water body dissolved oxygen concentration can be maintained more accurately and stably, and reliable technical support is provided for fishery water body management dissolved oxygen.

The invention belongs to the technical field of medical instruments, and particularly relates to a knob protection mechanism and an anaesthesia machine. The knob protection mechanism comprises a housing, a sealing plate, a transparent warning plate and an elastic piece, the housing is provided with a first knob receding groove and a first scale perspective window, and the sealing plate is assembled in the housing in a front-back sliding mode; the second knob abdicating groove can control the exposed length of the knob, and the exposed length of the knob is not enough to hold in a normal state so as to prevent misoperation. The rear end of the transparent warning plate is hinged to the housing, the front end of the transparent warning plate is slidably hinged to the sealing plate, the transparent warning plate synchronously overturns along with the sealing plate during adjustment to shield the first scale perspective window, and striking warning is formed through orange-yellow color. The mechanism is further provided with a limiting sliding groove, a limiting protrusion, a shifting block and other structures, the operation process is simplified, one-hand operation is adapted, and disassembly, assembly and maintenance are convenient. The respiration anesthesia machine comprising the mechanism can improve the safety and convenience of standby oxygen regulation, is suitable for various medical scenes, and provides reliable guarantee for regulation and control of surgical anesthesia oxygen supply.

This invention relates to an indoor closed-loop Sargassum culture system and method. The sterilization chamber is an opaque chamber containing a sterilization device and a first pipeline. The first pipeline has a return branch, a first output branch, and a control valve at its upper end. The regulating chamber has a second pipeline and a carbon dioxide regulating system, with the second pipeline connected to the culture chamber. The pH value of the water is controlled by the carbon dioxide regulating system, which regulates the carbon dioxide input. The culture chamber contains a substrate and an oxygen regulating system. A lighting system is located above the culture chamber. The substrate has a height-adjustable telescopic rod, and the Sargassum algae are placed on the telescopic rod. The water temperatures in both the regulating and culture chambers are regulated by a temperature regulating system. This invention provides large-volume, closed-loop culture, simulating the wild growth mode and environment of Sargassum algae, enabling rapid growth, development, and morphogenesis of the algae.

The application discloses a normal-temperature oxygen-removing and hydrogen-removing bifunctional catalyst and a preparation method and application thereof, relates to the technical field of catalysts, and comprises the following steps: dipping a carrier material into a cerium source solution, drying and calcining after negative pressure rotary evaporation of the solvent to obtain a CeO2 oxygen regulation layer modified carrier material; dipping the CeO2 oxygen regulation layer modified carrier material into a solution containing a platinum source, a palladium source and a nickel source, drying and reducing under a hydrogen atmosphere after negative pressure rotary evaporation of the solvent to obtain PtPdNi / CeO2 / carrier; and dipping the PtPdNi / CeO2 / carrier into a hydrophobic agent solution to obtain the normal-temperature oxygen-removing and hydrogen-removing bifunctional catalyst. The application provides a normal-temperature oxygen-removing and hydrogen-removing bifunctional catalyst which can run at normal temperature, can significantly reduce energy consumption, reduce cost, improve catalytic efficiency and has excellent anti-pollutant gas poisoning performance.

The invention provides a high-throughput optimization method for improving the performance of an additive manufacturing high-strength aluminum-based component through oxygen regulation and control, belongs to the technical field of metal 3D printing, and aims at solving the problem that an oxide dispersion strengthened alloy is difficult to manufacture through a traditional casting method at present. According to the method, a high-strength aluminum sample with oxygen content gradient is constructed, the oxide dispersion strengthened alloy is formed, and the influence rule of the mechanical property of the oxide dispersion strengthened high-strength aluminum alloy formed under different oxygen partial pressures is obtained by analyzing the sample with the oxygen content gradient. According to the method, nano oxides which are uniformly distributed in a melt are generated in situ by utilizing the high cooling rate of a laser powder bed melting technology and the characteristic that the surface tension gradient-driven strong Malangori melt flows, and the high-strength aluminum alloy with the oxygen gradient is prepared by actively regulating and controlling the oxygen partial pressure and is subjected to high-throughput analysis. And the optimal oxygen partial pressure parameter for improving the mechanical property of the high-strength aluminum is quickly obtained.

The utility model relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The hyperbaric oxygen chamber system with the adjustable oxygen concentration comprises a main machine and a chamber body, the main machine comprises a main control module, an oxygen adjusting module and a pressure adjusting module, and the oxygen adjusting module, the pressure adjusting module and the chamber body are electrically connected with the main control module; the pressure adjusting module comprises a low-oxygen air adjusting sub-module and a pressure maintaining air sub-module, the pressure maintaining air sub-module comprises a first air compressor, a pressure release valve and a first sensor, the oxygen adjusting module comprises a second air compressor, a separating valve, a molecular sieve tower, a flow limiting valve and a vacuum pump, and the low-oxygen air adjusting sub-module comprises a three-way valve and a one-way valve. According to the hyperbaric oxygen chamber system with the adjustable oxygen concentration, the production cost of the hyperbaric oxygen chamber system can be reduced, the use experience of a user is improved, meanwhile, the oxygen concentration in the chamber body can be adjusted to be lower than that of air, and therefore the hyperbaric oxygen chamber system can be expanded to be applied to hypoxia training and test places.

The invention relates to a lightweight thermal power plant oxygen amount control method, which is applied to a distributed control system of a thermal power generating unit, and comprises the following steps: dividing a plurality of continuous load operation intervals according to the load of the unit, obtaining the historical optimal oxygen amount under each load operation interval based on an operation database, based on the corresponding relation between the load operation interval and the historical optimal oxygen amount, function fitting is carried out, according to the fitting result, the optimal oxygen amount set value of the unit under the current load is determined, the deviation value between the optimal oxygen amount set value and the boiler real-time operation oxygen amount is calculated, the deviation value serves as correction offset, and the optimal oxygen amount of the unit under the current load is calculated. And introducing into an oxygen amount setting loop of a boiler air supply control system, and adjusting the oxygen amount. Through the application, the problems of poor real-time performance and accuracy of oxygen regulation of the thermal power plant are solved, and the calculation load and implementation cost of the control system are reduced while the control precision is ensured based on the lightweight control strategy fitted by the load partition and the historical optimal data.

The utility model relates to a non-pressure diesel welding and cutting machine, which belongs to the technical field of welding and cutting equipment and comprises a diesel barrel, an oxygen barrel is arranged on one side of the diesel barrel, an oil filling port is arranged at the top of the diesel barrel, an oxygen injection pipe is arranged at the top of the oxygen barrel, and a one-way valve is fixedly communicated with the top of the oxygen injection pipe. A diesel regulating valve and an oxygen regulating valve are arranged at the top of the diesel barrel and the top of the oxygen barrel respectively, the diesel regulating valve and the oxygen regulating valve are communicated with an oil-resistant rubber pipe and a rubber pipe respectively, and one end of the oil-resistant rubber pipe and one end of the rubber pipe are rotationally communicated with an oil connector and an oxygen connector respectively; one end of the oil connector and one end of the oxygen connector fixedly communicate with a mixing box, one end of the oil connector extends to penetrate through the mixing box and is located in the mixing box, a mixing assembly is arranged in the mixing box, and one side of the mixing box fixedly communicates with a cutting assembly.

The present invention relates to a movable high-altitude environment creation apparatus capable of artificially controlling and providing an environment such as that of a high-altitude site, comprising: a main body manufactured to be movable; an intake unit provided at the main body so as to suction external air into the main body; an oxygen regulation unit provided in the main body so as to regulate the oxygen of the air supplied by means of the intake unit; a connection unit for supplying, to an external device, the air regulated by the oxygen regulation unit while connecting the main body and the external device; and a control unit for controlling the operation of the intake unit and the oxygen regulation unit.

The pressure regulating device comprises a vertical transparent outer pipe, two ends of the vertical transparent outer pipe are sealed, the bottom of the vertical transparent outer pipe is provided with a pressure regulating needle valve, the top of the vertical transparent outer pipe is provided with a gas discharge valve, and the gas discharge valve is provided with a pressure regulating valve. Pressure scale values are arranged on the outer surface of the vertical transparent outer pipe, a water supplementing adjusting valve and a gas external pipe are arranged on the outer surface of the vertical transparent outer pipe at the upper end of the pressure scale values, a gas inner pipe is arranged in the vertical transparent outer pipe, and the top of the gas inner pipe is connected with the gas external pipe. The bottom of the gas inner pipe is arranged on one side of the bottom of the vertical transparent outer pipe, and the hydrogen production system uses the pressure regulating device. According to the utility model, the cost of an alkaline water electrolysis hydrogen production after-treatment system is reduced, the hydrogen and oxygen pressure regulation is more visual, the pressure value regulation is more accurate, and the multi-pressure working condition test requirements of a miniaturized and normal-pressure alkaline water hydrogen production device are met.

The utility model provides a diaphragm type anti-suffocation valve for an electronic oxygen regulator. The diaphragm type anti-suffocation valve comprises a shell, a valve valve, an elastic piece and a switch diaphragm, a piston is arranged in the shell and divides an inner cavity of the shell into an upper inner cavity and a lower inner cavity, a baffle is arranged at the upper end of the shell, and an air hole used for communicating the mask cavity with outside air is formed in the baffle. The valve valve comprises a piston rod and a pressing plate, the pressing plate is arranged above the baffle, one end of the piston rod is connected with the pressing plate, and the other end of the piston rod penetrates into the inner cavity of the shell from the position above the baffle and is connected with the piston. The elastic piece is connected with the piston and the shell, and the switch diaphragm covers the air hole in an attached mode. When oxygen supply is insufficient, the elastic piece pushes the piston and the piston rod to drive the pressing plate to move upwards, the anti-suffocation valve is automatically opened, a user only needs small suction force, the outer end of the switch diaphragm can be turned up under the action of the internal and external pressure difference, external air enters the mask cavity, and normal breathing of the user is guaranteed.

The invention relates to the technical field of gel preparation and treatment, in particular to a cross-linked sodium hyaluronate reaction device and an oxygen real-time regulation and control system, and the reference reaction process of the current reaction process is obtained by analyzing the similar situation of initial parameters of reaction materials in the historical reaction process; further comprehensively determining the reference change rate of the dissolved oxygen concentration in the current reaction process by taking the fluctuation and attenuation conditions of the dissolved oxygen in the historical deoxidation stage of each reference reaction process as reference; after the dissolved oxygen concentration in the current reaction process is reduced to the target concentration based on the reference change rate, a corresponding parameter adjustment value is determined based on numerical fluctuation and fluctuation deviation of each oxygen influence parameter in the concentration abnormal time period; therefore, various oxygen influence parameters are adjusted based on the parameter adjustment values, so that the oxygen concentration is indirectly regulated and controlled, and the accuracy of oxygen regulation and control is higher.

This invention relates to the field of solid waste application technology, and particularly to a method for improving the stability of steel slag based on dissolved oxygen regulation using microorganisms. The method includes the following steps: crushing and screening waste steel slag, washing, drying, sterilizing, and drying to constant weight to obtain steel slag aggregate; preparing a liquid culture medium, adjusting the pH value of the liquid culture medium to be approximately equal to the pH value of the steel slag aggregate; inoculating microorganisms into the liquid culture medium for cultivation; centrifuging the cultured microbial solution; diluting the bacterial sludge with 0.9% physiological saline or resuspending it with a sterilized 5g / L yeast extract solution; adjusting the OD600 value of the bacterial solution to 0.8~1.2; using a vacuum negative pressure adsorption device and surface spraying to ensure full contact between the bacterial solution and the steel slag aggregate and adsorption to saturation; preparing a mineralizing nutrient solution to mineralize the steel slag aggregate after adsorption of the bacterial solution, resulting in stabilized steel slag aggregate. This invention utilizes a microbial dissolved oxygen response regulation strategy to maximize and improve the stabilization efficiency of microbially modified steel slag.

According to the invention there is herein detailed a method for automated oxygen therapy and a double closed-loop regulated device for regulating oxygen for automated oxygen therapy, the device and method comprising use of a controller configured for controlling the provided flow of oxygen through the valve by adjusting the valve in response to feedback from a flowmeter and a sensor; the controller further configured for executing a control algorithm in response to measured physiological data received from the sensor indicating a patient activity involving physical exercise; the control algorithm permitting an iterative adaptation of the flow of oxygen through the valve using a predictive oxygen consumption model for compensating for a heightened patient oxygen consumption during physical exercise.