106 results about "Oxygen supplementation" patented technology

The utility model provides an oxygen injection control system based on dynamic environment variable compensation, and aims to solve the non-linear problem of oxygen content control under environment variable disturbance. Comprising a main oxygen spraying pipeline, an oxygen supplementing pipeline connected with the main oxygen spraying pipeline in parallel, a PLC (Programmable Logic Controller) and a PID (Proportion Integration Differentiation) controller which are respectively connected with the main oxygen spraying pipeline and the oxygen supplementing pipeline and are used for controlling the main oxygen spraying pipeline and the oxygen supplementing pipeline, and an oxygen content measuring pipeline which is in communication connection with the PID controller, the oxygen control system selectively controls the main oxygen spraying pipeline and / or the oxygen supplementing pipeline to be opened or closed.

The invention belongs to the technical field of medical auxiliary equipment, and particularly relates to a safety type low-pressure oxygen supplementation cabin suitable for multiple persons and a control method thereof.The low-pressure oxygen supplementation cabin comprises a cabin body, and an isolation space is formed in the cabin body; oxygen therapy equipment, air exhaust equipment, image acquisition equipment, environment monitoring equipment for monitoring environment parameters in the cabin body, physical sign monitoring equipment for monitoring physiological data indexes of a user and feedback equipment for active feedback of the user are arranged in the isolation space, and the oxygen therapy equipment comprises nasal oxygen equipment and dispersed oxygen equipment; based on the structure and the control method thereof, the internal parameters of the low-pressure oxygen supplementing cabin are regulated and controlled in combination with a feedback mechanism, a health monitoring mechanism, an active regulation and control mechanism and the like, and the personalized safe low-pressure oxygen supplementing cabin suitable for multiple persons is comprehensively provided.

The invention discloses a three-stage nano oxygen injection system for oxygen-carrying nano bubble water and a preparation method of the three-stage nano oxygen injection system. The three-stage nano oxygen injection system comprises a water source input unit, a pretreatment module, a Venturi oxygen injection device, a high-pressure homogenization module, an ultrasonic nanocrystallization module, a bubble stabilizing tank, a quality detection module and a filling output module. According to the three-stage nano oxygen injection system and the preparation method thereof, through an innovative multi-stage bubble dissolving technology, the solubility and stability of oxygen in water are greatly improved, and the problems of low dissolving efficiency, unstable bubbles and the like in a traditional oxygen water technology are solved. By simplifying the production process and reducing the production cost, the method can be applied to production of healthy drinks on a large scale, meets the requirements of consumers for efficient oxygen supplement and health functions, and has wide market prospects and good commercial values.

According to the bimodal oxygen control continuous cooling closed-loop fluid system and the precise control method, precise control over the oxygen content in closed-loop fluid equipment is guaranteed; the continuous cooling closed-loop fluid system comprises a compressor section, a liquid nitrogen injection section, a heat exchange section, a stable section, a test cabin section, a diffusion unit, an oxygen injection section and a steering unit which are sequentially connected and form a circulation shaped like a Chinese character'hui ', an oxygen content detection assembly is assembled between the stable section and the test cabin section, and an oxygen injection assembly is assembled on the oxygen injection section. The oxygen injection assembly comprises a feed-forward control pipeline and a feedback control pipeline, receives a feed-forward control instruction of the PLC, and automatically injects along with liquid nitrogen according to liquid nitrogen injection data by combining an ideal gas equation with a correction equation or an oxygen molecule demand calculated by a simulation mode value; the feedback control pipeline receives a PID feedback control instruction, and the feedback control instruction calculates the demanded quantity of oxygen supplementation molecules through real-time oxygen content data obtained by the oxygen content measuring assembly and liquid nitrogen injection data.

The application discloses a train fresh air oxygen supplement system and a control method thereof, and relates to a fresh air system. The train fresh air oxygen supplement system comprises a first air inlet channel and a second air inlet channel. The air inlet of the first air inlet channel is arranged at the head of the train, so that when the train is running, air can directly enter the first air inlet channel from the air inlet. In order to avoid the lack of fresh air when the train is running slowly or is stopped, the application further provides the second air inlet channel, and air enters the second air inlet channel through a fan. Therefore, when the first air inlet channel can meet the demand of the train, the fan of the second air inlet channel does not need to be started, energy is saved, and the use cost is reduced. When the first air inlet channel cannot meet the demand of the train, the fan of the second air inlet channel is started, so that the amount of fresh air can meet the use demand. Meanwhile, the oxygen concentration of outdoor air is increased through a membrane separator assembly, and then the outdoor air is mixed with the outdoor air, so that the required oxygen concentration is achieved.

The utility model discloses an oxygen supply device and a multi-channel oxygen supply curing chamber having the same, and relates to the technical field of battery manufacturing. The utility model includes a curing chamber and two sets of oxygen supply devices arranged above the curing chamber to form dual-channel oxygen supply. The oxygen supply device includes a fan, a connecting pipe and an oxygen supply pipe. The fan includes an air intake and an air outlet; one end of the connecting pipe is connected to the air intake, and one end of the oxygen supply pipe is connected to the peripheral side of the connecting pipe; a valve is rotatably installed in the oxygen supply pipe, and a driving component for driving the valve to rotate is installed on the peripheral side of the oxygen supply pipe to adjust the opening size of the oxygen supply pipe. The utility model drives the flow of hot and humid air in the curing chamber by arranging an oxygen supply device. On the one hand, the oxygen is evenly distributed in the curing chamber to improve the consistency of the plate curing quality; on the other hand, fresh air from the outside is inhaled through the flow of hot and humid air to supplement oxygen into the curing chamber, and the oxygen supply amount is controlled by adjusting the valve angle to improve the plate curing effect.

The invention relates to the technical field of pollution treatment, and discloses flame-retardant polyethylene cable material processing air pollution treatment equipment which comprises a combustion chamber, a first spiral combustion bed is rotationally arranged in the combustion chamber, a second spiral combustion bed is installed in the combustion chamber, and a first center shaft is connected to the middle of the first spiral combustion bed; the side part of the first central shaft is connected with a branch pipe communicated with the air inlet pipe, the side part of the first central shaft is provided with an oxygen supplementing nozzle, the side parts of the first spiral combustion bed and the second spiral combustion bed are both provided with microgrooves, the side part of the first spiral combustion bed is connected with a first partition plate, and the side part of the second spiral combustion bed is connected with a second partition plate; micropores are formed in the side parts of the first partition plate and the second partition plate. The oxygen supplementation spray head sprays extra oxygen, VOCs waste gas molecules which are not easy to decompose are intercepted by the microgrooves and the micropores for continuous combustion, the first spiral combustion bed rotates, waste gas on the rear side is pushed forwards, the combustion time is prolonged, waste gas decomposition is more thorough, the waste gas treatment effect is improved, and therefore air pollution is reduced.

The invention discloses a grading heat exchange and oxygen control oxidation process method based on a thermal oxidation furnace system, and belongs to the field of waste gas purification treatment. The system comprises a furnace body, a heat accumulator and a combustion chamber, and high-temperature purified gas at an outlet of the combustion chamber can be dynamically distributed through a switching air valve. The heat exchange branch is connected with the built-in heat exchanger, and an outlet of the heat exchange branch can eject and flow back part of flue gas subjected to heat exchange to the oxidizing chamber through the ejector for accurate oxygen supplementation. The system is further provided with a sensor group and a controller. The technological method is executed by a controller, the current working condition is judged according to predefined conditions by receiving oxygen content, temperature, flow and concentration signals in real time, a corresponding control mode is automatically switched, and the heat exchange amount and the backflow oxygen supplementation amount of the built-in heat exchanger are cooperatively controlled by adjusting the opening degree of a switching air valve. The problems that traditional RTO waste heat recovery efficiency is low, operation control is extensive, and oxygen content control is inaccurate are solved, and efficient heat exchange, safe low-nitrogen combustion and working condition self-adaptive operation are achieved.

The invention belongs to an aircraft engine oxygenating technology, and relates to an oxygenating system for oxygenating an engine, comprising: an oxygen bottle for storing oxygen; the oxygen bottle switch is a three-way valve; one end of the inflation mouthpiece is connected with an external air source, and the other end is connected with the left end of the oxygen bottle switch; the oxygen switch is connected between the right end of the oxygen bottle switch and the input end of the oxygen decompression device; the oxygen pressure reducing device is used for reducing pressure, and the output end of the oxygen pressure reducing device is connected to the engine through a pipeline.

The invention belongs to the technical field of aircraft propulsion system oxygen supplementation subsystem design, and particularly relates to an aircraft propulsion system oxygen supplementation subsystem oxygen cylinder oxygen carrying performance determination method which comprises the steps that 1, the oxygen demand mass m1 of engine air starting is calculated; 2, calculating the mass m2 of residual unavailable oxygen in the oxygen cylinder; 3, calculating the total mass m of oxygen required to be filled into the oxygen bottle according to the formula m = m1 + m2; 4, calculating the volume of the oxygen bottle needing to be filled under different environment temperatures and corresponding highest and lowest filling pressures; and step 5, comparing the volume of the oxygen bottle needing to be filled under different environment temperatures and corresponding highest and lowest filling pressures with the volume of the oxygen bottle, and determining whether the performance of the oxygen bottle carrying the oxygen can meet the requirement or not.

The present invention discloses a method for intelligently determining the timing of temperature measurement and oxygen determination during RH refining of non-oriented silicon steel, comprising the following steps: if the non-oriented silicon steel is low-grade non-oriented silicon steel, then during the RH treatment of the molten steel, the temperature measurement and oxygen determination times of the molten steel are sequentially determined at the time of entering the station, during the decarburization process, before the end of decarburization, after oxygen supplementation before the end of decarburization, after the end of deoxidation, and before RH air breaking, until the temperature measurement and oxygen determination time is reached; if the oriented silicon steel is medium- or high-grade non-oriented silicon steel, then during the RH treatment of the molten steel, the temperature measurement and oxygen determination times of the molten steel are sequentially determined at the time of entering the station, during the decarburization process, before the end of decarburization, after oxygen supplementation before the end of decarburization, after the end of desulfurization, and before RH air breaking, and after the temperature measurement and oxygen determination time is reached. The method can quantitatively determine the timing of temperature measurement and oxygen determination during the RH smelting of non-oriented silicon steel, improve the level of on-site standardized operation, and enhance the accuracy of molten steel temperature and composition control.

The invention provides an environment-friendly fire cover structure which comprises a gas distribution disc body, a mixed gas cavity is formed in the gas distribution disc body, a plurality of gas outlet holes are formed in the mixed gas cavity, fire distribution covers are arranged on the gas outlet holes, the environment-friendly fire cover structure is further provided with a gas guide ring, and mounting holes corresponding to the fire distribution covers are formed in the gas guide ring. The mounting hole is connected to the fire distribution cover in a sleeving mode and covers the upper portion of the gas distribution disc body, an air inlet interval is arranged between the gas guide ring and the body top face of the gas distribution disc body, an air outlet interval is formed between the mounting hole and the fire distribution cover, and the air inlet interval and the air outlet interval are communicated to supplement oxygen to the fire distribution cover. The air outlet interval supplements oxygen to the fire distribution cover, so that the combustion efficiency is improved; the space where the fire distribution cover is located is divided into an upper air inlet space and a lower air guide space through the air guide ring, so that the fire distribution cover can not only achieve upper air inlet, but also achieve air outlet interval oxygen supplementation to form a double-oxygen supplementation structure, and combustion is more thorough.

The invention discloses a medical oxygen cabin operation state monitoring, regulating and controlling device and method, and relates to the technical field of medical instruments.The medical oxygen cabin operation state monitoring, regulating and controlling device comprises an oxygen cabin body, an oxygen generation box is arranged on one side of the oxygen cabin body, a cabin door is arranged on the side, away from the oxygen generation box, of the oxygen cabin body, and a monitoring assembly is installed in the oxygen cabin body; a spraying mechanism used for spraying disinfectant is arranged on the inner side of the oxygen cabin body, and oxygen generation mechanisms used for supplementing oxygen are arranged on the top and the inner side of the oxygen generation box. The spraying mechanism is arranged, so that a spraying pipe can move in the up-down direction and the left-right direction, reciprocating swinging operation can be conducted, disinfectant can be conveniently and evenly sprayed to multiple corners in the oxygen cabin, the oxygen supplementing mechanism is arranged, and under cooperation of the monitoring assembly, the oxygen concentration and pressure in the oxygen cabin can be monitored in real time; the problem that the treatment effect is poor due to insufficient oxygen or unstable pressure is effectively solved, and oxygen supplementation and disinfection operation can be conveniently carried out in time according to the running state.

The application discloses a catalytic flue gas treatment device and a yellow phosphorus tail gas purification system, and aims to solve the technical problem of reducing the hidden danger of oxygen supplement to the flue gas to be treated during the operation of the catalytic flue gas treatment device. The device comprises a reaction system, a regeneration liquid circulation system and a flue gas conveying system, and further comprises an oxygen supplement system. The oxygen supplement system comprises a second air blower, an airflow adjusting device and an oxygen supplement gas distribution pipe network. The second air blower and the airflow adjusting device are connected with each reactor through the oxygen supplement gas distribution pipe network, so that the airflow generated by the second air blower is adjusted in flow by the airflow adjusting device, and then forms the oxygen supplement gas and enters the flue gas to be treated in the corresponding reactor. The oxygen concentration in the oxygen supplement gas is greater than that in the flue gas to be treated before the mixed oxygen supplement gas. The safety hidden danger possibly caused by the external mixing of the oxygen supplement in the reactor is avoided.

This invention discloses a biochemical treatment device and system. The biochemical treatment device includes a mixing chamber with an inlet, an outlet, and an exhaust outlet, as well as a receiving space for accommodating materials; a mixing shaft rotatably disposed within the receiving space, with multiple rake blades mounted on the mixing shaft, and an axial jet air path extending from the mixing shaft's interior, which is connected to an oxygen-supplementing hot air source; an air nozzle disposed on the mixing shaft, connecting the receiving space and the jet air path; and an air distribution pipe connected to the oxygen-supplementing hot air source, with its outlet located on the inner wall of the mixing chamber. In this biochemical treatment device, the oxygen-supplementing hot air source enters the receiving space of the mixing chamber through two air paths. The first air path directly blows the oxygen-supplementing hot air into the material, heating and drying it inside, increasing the material's heating and vaporization area; the second air path heats and dries the material via thermal convection.

The invention discloses a micro-positive pressure intelligent ventilation system suitable for a closed material plant control room, which comprises an intelligent control system, and is characterized in that the indoor and outdoor pressure difference is detected in real time through a pressure difference sensor, and the opening degree of an air valve is dynamically adjusted through the intelligent control system so as to control the interior to be in a 0-500Pa micro-positive pressure environment; an air treatment system; the air treatment system purifies air through a high-efficiency filter and is provided with an oxygen supplementing pipeline, one end of the oxygen supplementing pipeline is communicated with an indoor air supply pipeline, and the other end of the oxygen supplementing pipeline is communicated with an external oxygen source. The air treatment system is provided with an air storage bag connected with a pipeline of the intelligent control system, and air in the air storage bag is conveyed into a room through a fan. According to the system, intelligent micro-positive-pressure ventilation, air purification and oxygen supplementation functions of a high-risk, high-dust and underground closed control room are achieved, it is ensured that air in the closed control room is clean, the pressure difference between the indoor and the outdoor can be detected through the pressure difference probe, and according to the set pressure difference value, the control system automatically adjusts operation of air supply and maintains the micro-positive-pressure state.

The high-density aquaculture device is used for being installed in a culture pond, the high-density aquaculture device comprises a filtering tank, a sewage pump, an oxygen and water supplementing pipe and a flushing pipe, the bottom of the culture pond is in a cone shape and is provided with a sewage draining opening, and the sewage draining opening is communicated with the filtering tank through the sewage pump which is externally connected with a sewage draining pipe; the flushing pipe is annularly arranged on the lower portion of the culture pond, the oxygen and water supplementing pipe is annularly arranged on the upper portion of the culture pond, control valves are arranged on the oxygen and water supplementing pipe and the flushing pipe, and the oxygen and water supplementing pipe and the flushing pipe are communicated with the upper portion of the filtering tank through a main pipe. A traditional round-bottom culture pond is changed into a cone structure, metabolite and feed residues can be conveniently collected and discharged from the sewage outlet, meanwhile, the sewage pump is arranged to be intermittently started, dirt (water) deposited at the bottom of the pond can be pressurized and conveyed into the filtering tank, the dirt in the pond can be discharged in time, and water resources can be recycled.

This invention relates to the field of aerobic fermentation equipment for organic waste, specifically a small-scale aerobic fermentation device, including a fermentation cylinder, aeration components, aeration plates, and porous permeation plates. The device employs a layered aeration structure, coupled with an adaptive anti-clogging unit, a vibrating aeration top cover, and a wall-mounted jet structure. This fundamentally solves the problems of easy clogging of aeration holes and uneven oxygen supply in traditional equipment. Through a combination of bottom aeration, wall-mounted oxygen supplementation, and material disturbance, oxygen supply is achieved without dead zones inside the fermentation cylinder. The sawtooth stirring blades increase the air gap between materials, significantly improving the aerobic metabolic efficiency of microorganisms and effectively shortening the fermentation cycle. Simultaneously, a hydraulic circulation component is added to pump highly active bacteria and nutrients from the bottom back into the upper material layer, achieving uniform distribution of bacteria and full utilization of nutrients. This solves the problems of large differences in the maturity of the upper and lower layers and nutrient loss in traditional fermentation, improving the fertility and uniformity of the finished organic fertilizer.

1. Name of the designed product: low pressure oxygen supplement cabin (single person). 2. Use of the designed product: the designed product is used in the form of treatment for single person oxygen supplement cabin for controlling various indexes in the cabin. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1. 5. Other circumstances or explanations: the unclaimed parts in the oxygen supplement cabin.

The utility model provides a gas stove with an oxygenating and cooling device, and particularly relates to the technical field of kitchen appliances. The gas stove comprises a panel, a bottom shell and a burner, the panel is provided with a mounting hole position for mounting a burner; the combustor is installed at the position, corresponding to the installation hole position, of an inner cavity of the bottom shell. The combustor comprises a fire cover, a flame sensing needle, a gas distribution disc and an ejector; a battery box, a gas pipe, an electromagnetic valve, a flame-out protection device, a delay switch and a controller are arranged in the bottom shell; a switch knob and an oxygen supplementing device are arranged at the top of the panel, and the oxygen supplementing device is located on the right front side of the combustor. The device is simple in structure and convenient to use; the oxygen supplementing device is arranged, the air guide fan is combined with the ventilation holes in the front side wall and the rear side wall of the dust cover, air is continuously attached to the panel to be pumped to the combustor, it is guaranteed that the combustor conducts sufficient combustion, and meanwhile the combustor, the furnace frame, the water disc and the panel are rapidly cooled.

The utility model relates to the technical field of gas masks, in particular to a canister adapter for oxygen supplementation and a gas mask, and mainly solves the technical problem that an oxygen supplementation mode of an existing gas mask is poor in universality. The adapter comprises a barrel-shaped body, the inner wall of the barrel-shaped body is divided into an internal thread section and an unthreaded hole section in the axial direction, the diameter of the internal thread section is larger than that of the unthreaded hole section so that a first annular step face can be formed at the joint of the internal thread section and the unthreaded hole section, and the outer wall of the barrel-shaped body is divided into an unthreaded shaft section and an external thread section in the axial direction. The diameter of the optical axis section is larger than that of the external thread section so that a second annular step face can be formed at the joint of the optical axis section and the external thread section, the external thread section corresponds to the unthreaded hole section, the diameter of the internal thread section is equal to that of the external thread section, and the unthreaded hole section is provided with an oxygenating connector communicated with the outside. When in use, the adapter is connected between a canister and a mask body, is connected with an oxygen supplementation device through the oxygen supplementation interface on the adapter, can be suitable for various gas masks, and is high in universality.

The utility model relates to the technical field of sea urchin cultivation, and discloses a sea urchin seedling cultivation device which comprises a cultivation mechanism, a storage mechanism is arranged in the cultivation mechanism, the cultivation mechanism comprises a water changing device, an oxygen supplementing device is arranged at the top end of the inner side face of the water changing device, and the top face of the water changing device is fixedly connected with a shell. The side face of the shell is fixedly connected with a support, and the top end of the inner side face of the support is movably connected with a light supplementing lamp. A water source is provided for the whole device through the water inlet pump, water in the device is pumped through the water suction pump, the water changing requirement of sea urchin culture is met, sundries in a water body can be gathered through the funnel when the water suction pump pumps water, dirt and water are pumped away through the water suction pump, the base and the shell can be divided into two spaces through the oxygen supplementation device, and the space is saved. The width of the oxygenating device is smaller than that of the opening of the base, so that dirt cleaned into the base through the oxygenating device is not easy to return to the interior of the shell again.

A stepwise gas distribution and graded oxygen supplementation device for distribution of high-ratio circulating flue gas is provided. The circulating flue gas distribution main pipe includes stepped sections communicated with each other in sequence, and pipe diameters of the stepped sections are reduced in sequence along a flue gas moving direction. The circulating flue gas distribution branch pipes are each in communication with and arranged at one side of the corresponding stepped section. The flue gas sealing cover is in communication with gas outlet ends of the circulating flue gas distribution branch pipes. The oxygen supplementing devices are arranged in the circulating flue gas distribution branch pipes needing to increase oxygen content. The oxygen supply device is in communication with gas inlet ends of the oxygen supplementing devices.

The utility model relates to the technical field of gas mixers, and discloses a gas mixer capable of uniformly mixing, which adopts a double-sectional type mixing structure, in the first-stage mixing, oxygen is introduced into a mixing cylinder seat through gas inlet spray pipes which are uniformly arranged at the lower part of the mixing cylinder seat in a circumferential shape; oxygen and waste gas entering the mixing cylinder base are subjected to first-stage mixing, then in the mixing net core, the mixed gas is subjected to secondary mixed flow mixing through the mixing net core with corrugated net holes, secondary oxygen supplementation is carried out through the annular side gas inlet holes, and second-stage mixing of the gas is completed in the mixing net core; the mixing uniformity of waste gas and oxygen can be effectively improved, combustion and purification of the waste gas are more thorough, improvement of the purification quality of the waste gas is facilitated, the spherical gas distribution cover is installed at the gas outlet end of the gas inlet spray pipe, oxygen can be evenly diffused through flow distribution of the spherical gas distribution cover, the oxygen can be more rapidly and evenly mixed with the introduced waste gas, and the purification quality of the waste gas is improved. And the mixing uniformity of the gas can be further improved.

This invention belongs to the field of crab farming technology, specifically relating to an IoT-based self-oxygenation system for crab farming. It includes a self-oxygenation device and a control terminal connected by a signal connection. The self-oxygenation device comprises a support body, a buoyancy component, an oxygenation module, a dissolved oxygen sensor, an intelligent control module, and a power module. The buoyancy component is mounted on the support body. The oxygenation module includes an oxygenation pump mounted on the support body and an electrically adjustable bracket mounted on the buoyancy component. An air outlet is mounted on the electrically adjustable bracket, and the air outlet and the oxygenation pump are connected via a flexible air delivery hose. A temperature-changing layer is provided on the outer side of the air delivery hose. This invention enables remote monitoring of oxygen content in crab farming waters and adjustment of various oxygenation schemes. Furthermore, during oxygen supplementation, temperature changes can be used to repel crabs, effectively reducing damage caused by crabs clamping onto the air delivery hose.

The present invention provides an aeration method and device based on MABR. The aeration method based on MABR includes: controlling a first pipeline communicated with a gas supply pipeline to supply gas to a membrane module from the bottom of the membrane module; transporting the tail gas discharged from a tail gas outlet located at the top of the membrane module to a tail gas exhaust pipeline; controlling a second pipeline communicated with the tail gas exhaust pipeline to supply oxygen to the membrane module through an aeration disc; wherein, the aeration disc is connected to the second pipeline and is arranged corresponding to the bottom of the membrane module. This aeration method based on MABR can supply oxygen to the membrane module through the tail gas when the oxygen supply capacity to the membrane module is insufficient, effectively improving the utilization rate of the tail gas.

The application relates to a rotary kiln oxygen supplement device for solid waste recovery and relates to the technical field of solid waste resource utilization, which comprises an oxygen supplement spray gun, a support adjusting assembly and a sealing adjusting assembly. The support adjusting assembly comprises a support part and a first adjusting part, the support part is used for mounting the oxygen supplement spray gun, and the first adjusting part is used for driving the support part to move. The sealing adjusting assembly comprises a sealing part and a second adjusting part, two groups of the sealing parts are symmetrically arranged, the sealing part comprises a plurality of sealing plates arranged in the vertical direction, the sealing plates are slidingly arranged on an inspection door plate in the horizontal direction, the sealing plates seal the kiln opening, and the sealing plates of the two groups of the sealing parts are provided with a gap for the oxygen supplement spray gun to insert. The second adjusting part is provided with two groups and corresponds to the sealing parts one by one. The second adjusting part is connected with the support part, the second adjusting part is used for driving all the sealing plates of the corresponding group of the sealing parts to slide, and the gap moves with the movement of the oxygen supplement spray gun. The application can seal the kiln opening and is not easy to affect the movement of the oxygen supplement spray gun.

The present invention discloses a method for intelligently determining the timing of temperature measurement and oxygen determination during the RH refining process of ultra-low carbon steel. The method specifically comprises the following steps: (1) during the RH treatment process of the molten steel, sequentially determining the temperature measurement and oxygen determination times of the molten steel at the time of entering the station, during decarburization, before the end of decarburization, after oxygen supplementation before the end of decarburization, after the end of deoxidation, and before RH air breaking; and (2) issuing a temperature measurement and oxygen determination prompt after the temperature measurement and oxygen determination times are reached. The present invention provides a method for determining the temperature measurement and oxygen determination times during RH refining of ultra-low carbon steel, quantitatively determining the timing of temperature measurement and oxygen determination during RH refining of ultra-low carbon steel, improving the level of on-site standardized operations, and enhancing the accuracy of molten steel temperature and composition control.

The utility model discloses an oxygen supplementing device for a water collecting well, which relates to the technical field of water collecting wells of power stations and comprises an oxygen supplementing device body, a first oxygen supplementing pipe and a second oxygen supplementing pipe, the oxygen supplementing device body is arranged outside the water collecting well and can be used for conveying air, and the first oxygen supplementing pipe and the second oxygen supplementing pipe are led out of the oxygen supplementing device body and extend into the water collecting well. And a plurality of air supply ports are formed in the first oxygen supplementing pipe and the second oxygen supplementing pipe. According to the utility model, air is introduced into the water-collecting well through the oxygen supplementing pipe by utilizing the fan, so that the requirement of the specifications of occupational hazard protection specifications for operation in closed space is met, and reliable safety guarantee is provided for underground operation of maintainers.

The invention provides a multi-interface air source device. The multi-interface air source device comprises a sealing shell, an external air inlet formed in the sealing shell, an oxygen supply interface, an oxygen supplementation interface and a plurality of output interfaces. A premixing cavity is formed in the sealing shell, the oxygen supplementing connector and the external air inlet are both communicated with the premixing cavity, a one-way air inlet valve is arranged at the external air inlet, the premixing cavity is further connected with a suction device used for sucking external air, an air processing assembly is arranged at the external air inlet, and the premixing cavity is connected with a plurality of oxygen supply branches; a main oxygen supply pipeline communicated with the oxygen supply connectors is further arranged in the sealing shell, a gas flow distributor is arranged on the main oxygen supply pipeline, one output connector is communicated with the gas flow distributor, and the gas flow distributor is further communicated with a plurality of oxygen distribution branches. The oxygen distribution branches are communicated with the corresponding oxygen supply branches and then communicated with the remaining output connectors, and the gas flow distributors are used for adjusting the flow and / or the air-oxygen ratio of all the output connectors.