91 results about "Oxygen regulation" patented technology

The invention belongs to the technical field of steel smelting, and particularly relates to a rare earth steel smelting method based on a thin slab continuous casting and rolling production line. Comprising the following steps: (1) dynamic dephosphorization control: controlling the temperature of molten steel to be 1380-1410 DEG C, the content of FeO in slag to be 15-20%, the alkalinity of the slag to be 1.8-2.2 and the content of phosphorus at the end point to be less than or equal to 0.015% in a window period 0-6 minutes before converter smelting; and (2) converter end point carbon and oxygen regulation: the converter end point carbon content is greater than or equal to 0.08%, the end point oxygen content is less than or equal to 300ppm, and the end point inclusion density is less than or equal to 10 inclusions / mm < 2 >. Through a process chain of dynamic dephosphorization and oxygen reduction, gradient deoxidation and purification, step-by-step slag system optimization, rare earth sequential addition and whole-course protection casting, a forward circulation of molten steel cleanliness and rare earth stability is formed, the rare earth steel continuous casting problem is fundamentally solved, and technical innovation and economic breakthrough are achieved at the same time.

To provide an oxygen concentration adjusting device capable of performing proper oxygen therapy by adjusting the oxygen concentration of oxygen gas from an oxygen source fed into a cage, rather than adjusting the oxygen concentration by a gap opened in the cage. [Solution] An oxygen concentration adjusting device 12 supplies oxygen gas, adjusting the oxygen concentration of the oxygen gas to supply oxygen gas with an optimum oxygen concentration. Here, the oxygen concentration of the oxygen gas is controlled by a needle valve 12A that can vary the oxygen flow rate of the oxygen gas, and the oxygen gas is supplied to a cage 14 housing a small animal A or to an anesthesia machine.

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 provides a thermal power plant high-temperature section oxygen-free oxygen adding monitoring system and method, and relates to the technical field of oxygen content monitoring, an error prediction model is constructed according to monitoring errors of oxygen content monitoring equipment at different accumulative flows, and therefore the real oxygen content in feed water is obtained; then oxygen is injected, a magnetic intensity curve of the high-temperature steam pipeline is obtained, the corresponding relation between the thickness of ferroferric oxide and the magnetic intensity is obtained through a laboratory, a pH value curve of discharged steam is obtained, and the oxygen content condition of the steam is judged and regulated; according to the oxygen regulation and control amount and the intensity curve, the modification amount at different accumulative flows is obtained, the monitoring error is modified, the system comprises a water supply oxygen content obtaining module, a rear-end monitoring module, an oxygen content analysis module and a modification module, and smooth generation of the ferroferric oxide oxidation layer is guaranteed in the mode that monitoring is conducted from the front end and the rear end respectively.

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 belongs to the technical field of vegetable oil extraction, and discloses an efficient fermentation preparation method of Badam vegetable oil based on synergistic metabolism and dynamic regulation of composite flora, Badam fermented oil and application. According to the core scheme of the preparation method, the innovative process for efficiently converting the almond kernel residues into the high-activity vegetable oil is realized through the synergistic effect of composite flora (candida tropicalis, aspergillus niger and lactobacillus plantarum) in combination with a three-stage dynamic dissolved oxygen regulation and control, a pulse feeding strategy and a membrane separation-molecular distillation combined technology; the preparation method disclosed by the invention can be used for remarkably improving the grease yield and the retention rate of functional components, and is suitable for high-added-value grease production in food, medicine and cosmetic industries.

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.

The utility model provides an oxygen-carrying perfusion device. The oxygen-carrying perfusion device specifically comprises a kidney perfusion operation box and a portable oxygen generation unit. The kidney perfusion operation box is additionally provided with an oxygen adjusting unit, and the oxygen adjusting unit comprises an oxygen adjusting control panel, an oxygen flow adjusting valve, an oxygen flow sensor and an oxygen concentration sensor. The portable oxygen generation unit comprises an oxygen generation device control panel and an oxygen generation device, an output pipeline of the oxygen generation device is communicated with an oxygen flow regulating valve, a user inputs an instruction from a control display of the kidney perfusion operation box, and a main control panel of the kidney perfusion operation box is communicated with the oxygen generation device control panel and an oxygen regulating control panel. The oxygen adjusting control panel and the oxygen generating device control panel control the opening size of the oxygen flow adjusting valve and the output duty ratio of a compressor of the oxygen generating device to achieve control over the flow and concentration of oxygen input by the displayer. By means of the structure, a user can adjust oxygen supply parameters in real time according to requirements, and therefore convenient and flexible kidney oxygen-carrying perfusion is achieved.

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 belongs to the technical field of sewage treatment, and particularly relates to a composite artificial wetland system based on dissolved oxygen regulation and an operation method thereof. According to the constructed'vegetation-free horizontal subsurface flow + vegetation composite vertical flow + vegetation horizontal subsurface flow 'composite constructed wetland system, water can be fed from the water inlet pipe of the vegetation-free horizontal subsurface flow constructed wetland and the water diversion inlet pipe of the downstream pool B in a segmented manner, the water flow and the oxidation-reduction environment of each segment are optimized, additional carbon sources do not need to be supplemented, and the cost is reduced. The problem of carbon source shortage can be solved, the nitrogen and phosphorus removal efficiency is improved, and the method is suitable for treating low-carbon-nitrogen-ratio wastewater.

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 provides a pressurized oxygen immersion oxygen partial pressure on-line detection device which comprises an autoclave, a thermocouple is arranged on the autoclave, a plurality of partition plates are arranged in the autoclave, the autoclave is divided into a plurality of reaction compartments by the partition plates, an oxygen main pipe is arranged below the autoclave and connected with a plurality of oxygen branch pipes, and the oxygen branch pipes are communicated with the reaction compartments. The oxygen branch pipes penetrate into the corresponding reaction compartments from the bottom of the autoclave, the oxygen main pipe is provided with an oxygen pressure transmitter, the thermocouple is connected with a controller, and the controller is respectively connected with the oxygen pressure transmitter and the oxygen regulating valve. According to the utility model, the thermocouple is arranged at the corresponding position of the autoclave, the saturated vapor pressure in the autoclave is obtained by detecting the temperature of the vapor phase in the autoclave, and the saturated vapor pressure is compared with the oxygen pressure in the oxygen branch pipe to obtain the accurate oxygen partial pressure in the autoclave under the temperature condition; meanwhile, an existing operator can directly observe through the display screen, and the use mode is convenient and fast.

The present application provides a method and a fermentation device for regulating the fermentation speed of maintaining the natural activity of fruits and vegetables, which relates to the technical field of fruit and vegetable fermentation. It collects multiple types of bacterial communities corresponding to multiple liquid inlet ports of a fruit and vegetable fermentation tank; conducts an oxygen adaptability analysis based on the multiple types of bacterial communities, and outputs multiple groups of low-oxygen regulation parameters; controls multiple low-oxygen regulation sub-modules to activate the bacterial communities at the multiple liquid inlet ports according to the multiple groups of low-oxygen regulation parameters; constructs a mixed fermentation speed regulation model, inputs the types of bacterial communities in the mixer into the mixed fermentation speed regulation model for analysis of activity retention, and outputs mixed-low-oxygen regulation parameters; adjusts the oxygen in the mixer according to the mixed-low-oxygen regulation parameters. The present application solves the technical problems in the prior art that due to the lack of fine regulation of the oxygen demand during the fermentation process of multiple bacterial communities, the fermentation efficiency is low and the nutritional components are lost, and achieves the technical effect of improving the fermentation efficiency and retaining the natural components of fruits and vegetables.

The utility model discloses an oxygen inhalation tube capable of adjusting flow, which comprises an oxygen regulator, an air inlet channel and an air outlet channel which are communicated with each other are arranged in the oxygen regulator, the air inlet channel is arranged along a first direction, and a second pipeline is arranged along a second direction; an adjusting valve is arranged at the communication part of the gas inlet channel and the gas outlet channel, and at least part of the adjusting valve is exposed out of the oxygen regulator; the air inlet channel is externally connected with air supply equipment, and the air outlet channel is communicated with a nasal catheter. According to the nasal catheter with the oxygen regulator, the oxygen regulator is arranged to achieve regulation of the size and the flow speed of inlet air flow, the first branch pipe used for air outlet in the nasal catheter is arranged to be of the structure with the top end in the arc shape, specifically, the first branch pipe is further provided with a plurality of micropores, and the comfort degree can be improved by releasing air through the micropores.

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.

The utility model belongs to the technical field of medical instruments, and particularly relates to an air and oxygen mixing device and a breathing machine. In the air-oxygen mixing device, an oxygen channel, an air channel, an air outlet channel, a balance cavity and a mixing cavity are arranged on a seat body; the diaphragm is mounted in the balance cavity and is used for dividing the balance cavity into a first space and a second space; the oxygen channel communicates with the first space through an oxygen regulating valve, and the air channel communicates with the second space through an air regulating valve; the first adjusting rod and the second adjusting rod are installed on the two opposite side faces of the membrane respectively, the first adjusting rod is used for adjusting the opening size of the oxygen adjusting valve, and the second adjusting rod is used for adjusting the opening size of the air adjusting valve. The concentration adjusting valve is installed in the mixing cavity, and the first space and the second space communicate with the air outlet channel through the concentration adjusting valve. The whole air-oxygen mixing device is mechanical valves, electric control is not needed, and the safety of the air-oxygen mixing device is improved; and the air-oxygen mixing device is simple in structure and high in adjusting precision.

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 utility model provides an oxygen regulating device for blast furnace smelting, which comprises an oxygen generator, an air pipe communicated with the side face of the oxygen generator, a cooling pipe and a blast furnace pipe, the cooling pipe and the blast furnace pipe are sequentially connected with the air pipe, a cavity is arranged on the inner wall of the cooling pipe, a low-temperature pipe and an exhaust pipe are respectively arranged on two sides of a pipe body of the cooling pipe and communicated with the cavity, and a plug is arranged at an outlet of the exhaust pipe. Sponge is arranged in the cooling pipe, the blast furnace pipe is communicated into the smelting furnace body, and an adjusting valve is arranged on a pipe body. The cooling pipe is arranged between the gas pipe and the blast furnace pipe, moisture in gas in the pipe is intercepted through the condensation effect of the cooling pipe, meanwhile, the moisture and impurities are adsorbed through the sponge, then the purity of oxygen is effectively improved, and it is guaranteed that the quality of oxygen entering the blast furnace is stable; and meanwhile, the situation that water enters the blast furnace and consequently the furnace temperature is reduced is reduced, and it is guaranteed that the temperature in the furnace is stable.