165 results about "Nitrogen flow" patented technology

The utility model relates to a gas diffusion cascade device for preparing high-abundance nitrogen-15 isotopes by taking nitrogen as a medium. The gas diffusion cascade device comprises a first gas diffusion cascade, a second gas diffusion cascade, a photocatalysis / electro-catalysis device and a high-speed magnetic suspension gas compressor, the first gas diffusion cascade and the second gas diffusion cascade are ladder cascade and respectively comprise a plurality of gas diffusion separation devices; the photocatalysis / electrocatalysis device is positioned between the first gas diffusion cascade and the second gas diffusion cascade; the high-speed magnetic suspension gas compressor is positioned in front of each gas diffusion and separation device in the nitrogen flowing direction; and obtaining the high-abundance nitrogen-15 isotope prepared by taking nitrogen as a medium from the heavy fraction end of the second gas diffusion cascade. The gas diffusion cascade device is high in separation coefficient, large in flow and high in efficiency, the prepared nitrogen-15 isotope abundance is high, and the gas diffusion cascade device is suitable for industrial application.

The invention discloses a solid-phase tackifying, cooling and humidifying system and a solid-phase tackifying, cooling and humidifying process for nylon. The cooling and humidifying of a slice are realized while a high-viscosity nylon slice is produced; on the basis of the prior art, a cooling function and a humidifying function are innovatively combined, and remarkable technical progress is achieved. According to the system, an interlocking control system of a cooling circulation nitrogen flow meter, a regulating valve and a temperature and dew point detector is additionally arranged on a cooling unit, so that dynamic regulation of the gas-solid ratio (0.05-0.5) of supplied gas and graded dew point control are realized, and the water content control precision is improved to + / -50ppm from + / -100ppm of a traditional process. By optimizing the nitrogen circulation path and the retention time (1.5-6 hours), a single set of system can be compatible with production modes with different water content requirements of 400-1000 ppm, the investment is saved by 40% and the energy consumption is reduced by 20% compared with a mode of additionally arranging humidifying equipment, the remarkable technical advantages are shown, and the industrial application prospect is good.

The invention relates to the technical field of steelmaking dust removal fan frequency adjustment, in particular to a steelmaking dust removal fan frequency conversion adjustment method which comprises the steps that target steel grade information and information of the current smelting stage of molten steel are obtained; and obtaining the initial carbon content and the initial nitrogen content of the molten steel. And setting the target carbon content and the target nitrogen content of the molten steel according to the smelting stage information. And according to the initial carbon content and the target carbon content of the molten steel, the oxygen flow required by smelting is obtained. And obtaining the nitrogen flow required by smelting according to the initial nitrogen content and the target nitrogen content of the molten steel. And the argon flow required by smelting is obtained according to the oxygen flow. And according to the oxygen flow, the nitrogen flow and the argon flow, the flue gas flow in the smelting period is obtained. And controlling the frequency of the dust removal fan based on the flue gas flow. The power consumption of the dust removal fan can be reduced, the production cost is reduced, the influence on the environment and the health of workers is reduced, and the problem that the overall efficiency is low due to local optimum of the dust removal fan can be solved.

The utility model belongs to a gas distribution system for liquid nitrogen. Comprising a liquid nitrogen storage tank connected with a liquid nitrogen pipeline, the liquid nitrogen storage tank is connected with a vaporizer through a booster pump, and an outlet of the vaporizer is connected with an IG541 fire extinguishing agent filling system and a standard gas distribution system through a first tee joint; the standard gas distribution system comprises a nitrogen circulation part, and the tail end of the nitrogen circulation part is respectively connected with the high-end gas distribution part and the standard gas distribution system through a second tee joint; the high-end gas distribution part comprises a nitrogen purification system, and the tail end of the nitrogen purification system is connected with a high-end standard gas distribution system; the method has the characteristics of reducing investment, being convenient to control, saving energy consumption and ensuring stable operation of the system.

The invention belongs to the technical field of laser processing, and particularly relates to a laser marking production device for iron tower steel part processing, which comprises a laser marking equipment main body, a laser head is arranged on the laser marking equipment main body, and the outer side of the laser head is movably sleeved with an annular outer pipe with the same circle center; the annular outer pipe is fixed to the outer side of the laser head through a height adjusting assembly, the position, facing the center of the annular outer pipe, of the bottom end of the annular outer pipe is fixedly connected and communicated with a plurality of inner nozzles arranged in an annular array, and the middle of the bottom end of the annular outer pipe is fixedly connected and communicated with a plurality of middle nozzles arranged in an annular array. And a plurality of outer nozzles which are arranged in an annular array are fixedly connected and communicated to the position, far away from the center of the annular outer pipe, of the bottom end of the annular outer pipe. When the air curtain form is switched, the nitrogen flow is synchronously adjusted through the manual switching structure, the smaller the marking range is, the smaller the flow is, gas waste is avoided, and it is guaranteed that the air curtain protection strength is matched with the marking range.

A crystal pulling method for reducing microdefects in a large-size crystal bar relates to the field of crystal bar pulling and comprises the steps of feeding, melting, necking growth, shouldering growth, equal-diameter growth and tail growth. Wherein after charging is completed, high-purity nitrogen with the purity being 99% or above is firstly charged, the pressure of the nitrogen is 0.08-0.6 MPa, and then the high-purity nitrogen is heated to 1500 DEG C or above to melt the monocrystalline silicon raw material; in the equal-diameter growth process, the furnace pressure of the single crystal furnace is adjusted to be 16 kPa to 38 kPa, and the nitrogen flow is adjusted to be 59 slpm to 101 slpm. By optimizing process parameters, particularly replacing argon with high-purity nitrogen, and accurately controlling conditions such as furnace pressure, nitrogen flow, magnetic field intensity and the like, microdefects in the crystal are remarkably reduced, and the mechanical strength and the yield of the crystal are improved.

The utility model discloses a nitrogen purging assembly which comprises a three-way control valve set connected to the liquid outlet end of a crane pipe and a corrugated hose installed on a tank car quick connector, a main liquid conveying pipe is installed at the end, away from the crane pipe, of the three-way control valve set, and a Y-shaped three-way pipe is installed at the end, away from the three-way control valve set, of the main liquid conveying pipe. Opposite ports of the Y-shaped three-way pipe and the corrugated hose are connected through flanges, and a one-way air inlet valve is installed at the top end of the Y-shaped three-way pipe. The three-way control valve group is utilized to accurately control the flow and direction of nitrogen, so that the nitrogen can be shunted according to a preset path, the nitrogen can be cleaned to each dead corner and turning of a pipeline, the residual liquid cleaning efficiency is improved, and the Y-shaped three-way pipe is designed to ensure that a part of residual liquid directly enters a tank car, so that the residual liquid cleaning efficiency is improved. Therefore, the pollution risk to other areas is reduced.

The utility model relates to the technical field of pipeline blockage prevention, and provides a pipeline blockage prevention device which comprises a reactor, a nozzle is arranged on the side face of the reactor, a hydrogen pipeline fixedly penetrates through the side face of the reactor, a pneumatic valve is arranged on the circumferential face of the hydrogen pipeline, and a supporting plate is arranged on the side face of the reactor. According to the utility model, components such as an electric telescopic rod, an air pressure bin and a nitrogen bin of the nitrogen cleaning mechanism are matched with one another, so that when a worker finds that a nozzle on the side surface of the reactor is blocked, nitrogen is added into the nitrogen bin through an inflation hole of the nitrogen bin, and then the electric telescopic rod is started to enable the nitrogen to be subjected to thrust of an extrusion plate to increase pressure; the nitrogen flows into the hydrogen pipeline through the nitrogen pipeline, the flow speed of the gas in the hydrogen pipeline is increased, the nozzle is cleaned, the effect of cleaning the nozzle by increasing the flow speed through the nitrogen is achieved through the design, and then nozzle scaling is reduced.

The invention provides a gas diffusion electrode device for electrochemical lithium-mediated ammonia synthesis and an electrochemical ammonia synthesis method, and belongs to the technical field of electrochemical ammonia synthesis. The gas diffusion electrode device comprises a nitrogen runner, a sealing gasket, a working electrode, a catholyte chamber, a diaphragm, an anolyte chamber, an anode catalyst, a hydrogen runner and an electrolyte, the electrolyte comprises a lithium salt, an organic solvent, a proton shuttling agent and an interface additive. According to the invention, high nitrogen transmission is realized by adopting a circulating type gas diffusion electrode device, and a three-phase interface chemical environment of gas, electrolyte and the gas diffusion electrode is regulated and controlled by an interface additive, so that the ammonia production rate and the Faraday efficiency are remarkably improved, and continuous and efficient nitrogen reduction reaction is realized at normal temperature and normal pressure.

The application discloses a kind of laser cutting device based on metal nanometer plate production and processing, it is related to metal nanometer plate laser cutting technical field.In the present application, nitrogen inlet side of guide platform component is equipped with nitrogen input pipe, and nitrogen outlet side of guide platform component is equipped with nitrogen output pipe;Two sides of lower passage plate are attached with airtight part;Pushing module is used to push metal nanometer plate to lower passage plate and airtight part top;Cutting power component includes U-shaped passage plate for covering outside airtight part;Laser cutting assembly is slidably installed on corresponding lateral airtight assembly and includes laser cutter in airtight part.The present application can realize closed laser cutting in nitrogen flow environment through the synergistic effect of lower flue, upper flue, flow guide smoke cavity one and flow guide smoke cavity two, effectively realize that smoke and debris generated in cutting process are blown away, to avoid the influence of smoke and debris on metal nanometer plate cutting quality.

The invention discloses a liquid hydrogen heat exchange experimental device, which relates to the field of aero-engines and comprises a liquid hydrogen loop, a nitrogen heating loop, a test section, a measurement and control module and a safety protection module, wherein the liquid hydrogen loop is used for providing supercritical hydrogen meeting a preset working condition; the nitrogen heating loop is used for heating nitrogen to a target working condition temperature and providing a convection heating environment for the test section; the test section comprises a straight pipe type sealing sleeve, supercritical hydrogen circulates in an inner pipe of the straight pipe type sealing sleeve, and high-temperature nitrogen circulates in an outer pipe of the straight pipe type sealing sleeve; the measurement and control module comprises a controller, and the controller and the heater are configured to dynamically adjust the flow of hydrogen and nitrogen and the heating power of nitrogen so as to simulate transient working conditions; the safety protection module is used for conducting steady state judgment and safety monitoring according to data collected by the liquid hydrogen side sensor and the nitrogen side sensor. According to the invention, the convective heat transfer performance of supercritical hydrogen can be accurately measured under low-temperature, high-pressure and safe conditions, and reliable experimental support is provided for thermal management of a hydrogen fuel aero-engine.

The invention discloses an emptying natural gas recovery system and method. The natural gas recovery subsystem comprises a natural gas inlet, a natural gas pre-cooling device, a pretreatment device, a moderate cooling device, a light hydrocarbon separation device, a natural gas cryogenic liquefaction device, a non-condensable gas separation device and a liquefied natural gas outlet which are communicated in sequence; the liquid nitrogen gasification subsystem comprises a liquid nitrogen inlet, a nitrogen outlet and pipelines which are sequentially connected among the liquid nitrogen inlet, the natural gas cryogenic liquefaction device, the natural gas moderate cooling device, the natural gas precooling device and the nitrogen outlet; and the nitrogen replacement subsystem is used for injecting nitrogen collected from the nitrogen outlet into an emptying pipeline after decompressing and heating the nitrogen. The system gasifies liquid nitrogen by using heat energy released by natural gas liquefaction, and liquefies natural gas by using cold energy released by liquid nitrogen gasification; nitrogen flowing out after being used for cooling natural gas is injected into the emptying pipeline to replace low-pressure natural gas, the pressure in the natural gas pipeline is kept stable, low energy consumption is achieved, and the low-pressure natural gas is effectively recycled.

The invention belongs to the technical field of nuclear power, and discloses a degassing system and a degassing method for a nuclear reactor coolant. The degassing system of the nuclear reactor coolant comprises a hollow fiber membrane degassing device, a coolant storage device connected with a coolant input end of the hollow fiber membrane degassing device, and a vacuum device connected with a nitrogen output end of the hollow fiber membrane degassing device, the hollow fiber membrane degassing device comprises at least one vertically arranged degasser; the degasser comprises a coolant channel and a membrane wire channel which are arranged in the vertical direction; coolant flows in the coolant channel from bottom to top, and nitrogen flows in the membrane filament channel from top to bottom. The hydrophobic characteristic of the hollow fiber membrane is utilized, and the membrane degassing technology is combined with vacuum suction and nitrogen purging to achieve the deep degassing target. According to the degassing system for the nuclear reactor coolant, the coolant flows from bottom to top in cooperation with nitrogen flowing from top to bottom, so that the whole system operates reliably for a long time, and energy consumption is optimized.

The present invention relates to a method for effectively solving the problem of coal rock cracks, and a technical solution thereof is to use inorganic grouting reinforcement materials for mining as a plugging liquid for repair. In the absence of human interference, when cracks occur in the coal rock, nitrogen flows out through the cracks, causing the air pressure valve to change. The changed data is transmitted to the control device and displayed on the display screen at the same time. Relevant personnel can analyze the process of data change. After analysis, the controller triggers the gas-liquid separation switch to work, opens the plugging liquid and closes the nitrogen. The plugging liquid is sprayed onto the coal rock cracks through the gas-liquid coexistence grouting pipeline. After the cracks are filled, the controller triggers the gas-liquid separation switch again. This high-efficiency circulating crack filling method can repair the harmful cracks generated in the coal rock to the greatest extent and for the longest time, and is an innovation in the self-repair method of coal rock cracks.

The present invention relates to the field of research on the flow and heat transfer characteristics of supercritical nitrogen in pipelines, and more particularly to a multifunctional experimental system for studying the flow and heat transfer of supercritical low-temperature nitrogen. The outdoor portion of the supercritical low-temperature nitrogen experimental system includes a liquid nitrogen storage tank for storing liquid nitrogen, a cryogenic pump for pressurizing, a high-pressure vaporizer for vaporizing the liquid nitrogen, a liquid nitrogen thermostat for cooling the nitrogen, a buffer tank for stabilizing pressure and flow, and gas-liquid separation, and a cryogenic and high-pressure pressure reducing valve for regulating outlet pressure, all interconnected by pipelines. The system also includes an automatic control box for controlling electrical components. The indoor portion includes a main regulating valve, a flow meter, a third pressure transmitter, and a third temperature transmitter, all interconnected by pipelines. The experimental system itself can directly provide medium- and low-pressure liquid nitrogen as a cold source for cooling the vaporized nitrogen pipeline, providing a large amount of experimental data support for the development of efficient and compact pre-cooling heat exchangers, and is suitable for widespread promotion.

The utility model relates to a nitrogen gas heating device, including: intermediate pipe body, internal pipe body, heating pipe and gas inlet interface, intermediate pipe body is sleeved outside internal pipe body and is fixed relative to internal pipe body position, intermediate pipe body and internal pipe body form a second cavity, gas inlet interface and second cavity are communicated, heating pipe is located in second cavity, and gas inlet interface is located in the second cavity. The second cavity communicates with the interior of the inner pipe body through the third channel. The heating pipe is used for heating the nitrogen, the heated nitrogen heats the process waste gas and the inner wall of the pipeline through which the process waste gas flows, the number of the process waste gas deposited on the inner wall of the pipeline is small at the high temperature, and therefore blockage of the inner wall of the pipeline is relieved, and the maintenance period of the pipeline is prolonged. The waste heat of the outer wall of the middle pipe body is used for heating a small part of nitrogen in the first cavity, and the residual heat is utilized, so that the consumption of the heating pipe is reduced; nitrogen flowing in the first cavity takes away most waste heat, the temperature of the external pipe body is reduced, and workers are prevented from being scalded.

The invention discloses a device and method for improving uniformity of furnace nose humidifying nitrogen. The device comprises a flow guide cover arranged at a furnace nose nitrogen inlet, and the flow guide cover is connected with multiple stages of gas inlet pipelines. The flow guide cover is additionally arranged on the nitrogen inlet to change the motion trail of wet nitrogen, meanwhile, the multi-stage wet nitrogen inlet pipelines are additionally arranged on the flow guide cover to change the motion trail of wet nitrogen flow, so that the wet nitrogen on the surface of zinc liquid is distributed more uniformly, zinc ash can be effectively inhibited in the hot galvanizing furnace nose, and the hot galvanizing furnace nose is prevented from being damaged. Therefore, the defect of zinc ash on the surface of the outer plate caused by zinc steam backflow can be effectively prevented and reduced, the surface quality of strip steel can be improved, the structure and operation are simple, the implementation cost is low, and the economic value is obvious.

The utility model discloses a kind of intelligent hollow gas membrane structures, including hollow gas membrane main body;The head of hollow gas membrane main body, tail part is respectively set with head end body and tail end body in correspondence with head;The outer end of head end body is provided with head end cover;The outer end of tail end body is provided with tail end cover;The center of head end cover is provided with first center hole;The center of tail end cover is provided with second center hole;First through-hole is provided on the outer circumferential surface of head end body;Standard membrane silk is provided in the hollow gas membrane main body;Standard membrane silk is communicated with first center hole, second center hole and first through-hole;The tail end of hollow gas membrane main body is equipped with inductor, and it is used to detect the life and output nitrogen flow of hollow gas membrane;The utility model is easy to install, can monitor life, and also can monitor the nitrogen flow of production separately.

The utility model relates to a sintering furnace alarm device, concretely is a kind of ceramic copper clad plate sintering furnace variable automatic alarm device, including furnace body, the furnace body top is provided with furnace cover, the furnace body outer wall is fixedly provided with display screen, and the furnace body outer wall is also fixedly provided with warning light;The inner center of furnace body is liftable and is provided with the placing table for placing ceramic copper clad plate, and the heating component is fixedly arranged in the inner furnace body outside placing table, the furnace body outside is symmetrically provided with two nitrogen storage tanks, nitrogen storage tank is fixedly connected with air inlet pipe, and one end of air inlet pipe penetrates furnace body side wall and is in the inside of furnace body, the inner furnace body is also symmetrically fixedly provided with two air guide components, the air guide component is used to guide nitrogen to be blown to placing table evenly, and the inner wall of furnace body is fixedly provided with several thermocouples real-time monitoring temperature distribution, and hot-type mass flowmeter is fixedly arranged in air inlet pipe and monitors nitrogen flow.

The embodiment of the invention relates to the technical field of water electrolysis hydrogen production, and discloses a nitrogen replacement device, a control method of the nitrogen replacement device, a water electrolysis hydrogen production system and a control method of the water electrolysis hydrogen production system. The nitrogen replacement device is applied to the water electrolysis hydrogen production equipment, the water electrolysis hydrogen production equipment comprises a hydrogen side separation unit and an oxygen side separation unit which are communicated with each other, and the nitrogen replacement device is characterized in that a control unit controls a nitrogen supply unit to convey nitrogen to the hydrogen side separation unit and the oxygen side separation unit respectively; the first flow adjusting unit is arranged on the hydrogen side supply pipeline; the second flow adjusting unit is arranged on the oxygen side supply pipeline, and the control unit controls the first flow adjusting unit and the second flow adjusting unit at the same time so that the liquid level difference between the hydrogen side separation unit and the oxygen side separation unit can be within a preset range. The nitrogen displacement device provided by the invention solves the problem of controlling the stability and consistency of nitrogen flow in the nitrogen displacement process, so that the liquid level of the hydrogen side separation unit and the liquid level of the oxygen side separation unit are balanced.

The utility model relates to gas mixing field discloses a kind of natural gas and nitrogen mixed calorific value control system, including natural gas main pipeline, nitrogen main pipeline and mixer, two parallel large branch pipeline and small branch pipeline are equipped on natural gas main pipeline, and large branch pipeline, small branch pipeline and nitrogen main pipeline are connected mixer, and mixer is connected gas pipeline, and heat value analyzer is equipped on gas pipeline;Natural gas flowmeter is equipped on natural gas main pipeline, and first natural gas flow regulating valve and second natural gas flow regulating valve are respectively equipped on small branch pipeline and large branch pipeline, and nitrogen flowmeter and nitrogen flow regulating valve are equipped on nitrogen main pipeline;The valve opening degree regulating amount of first natural gas flow regulating valve is 10%~40%, and when the valve opening degree of first natural gas flow regulating valve is less than 40%, second natural gas flow regulating valve is closed.The utility model can realize the accurate control to natural gas and nitrogen mixed proportion, ensure the stability of calorific value, satisfy the continuity and safety of production.

The invention relates to the technical field of metallurgical and chemical refining processes, in particular to a nitrogen flow self-adaptive regulation and control device for refining, which comprises a barrel, a turntable is rotatably arranged in the barrel, a conveying cavity is formed between the upper end of the turntable and the barrel, a partition plate is arranged in the conveying cavity, and the partition plate divides the conveying cavity into an inlet cavity and an outlet cavity; one side of the inlet cavity is provided with an air inlet pipe, and one side of the outlet cavity is communicated with an air outlet pipe; a gas backflow device is arranged in the gas outlet pipe; according to the gas backflow device, a lantern ring is arranged at one end of a gas outlet pipe, a backflow cavity is formed between the interior of the lantern ring and the gas outlet pipe, a flow guide part communicating with the gas outlet pipe and the backflow cavity is constructed on the gas outlet pipe, and a backflow pipe communicating with the backflow cavity is arranged on the lantern ring. Invalid emission and waste of nitrogen are reduced; the basic gas transmission amount is adaptively adjusted along with the temperature, the problems of insufficient flow at high temperature and excessive flow at low temperature are avoided, and nitrogen consumption is further reduced.

The invention relates to the technical field of intelligent control, and discloses an intelligent control method and system of a full-automatic concentrator and a storage medium. The method comprises the steps that the temperature, the liquid level and the vacuum degree are collected in real time through multiple sensors, a multi-dimensional time sequence is constructed and input into a liquid level collapse prediction model, and the collapse probability is obtained in advance; if the probability exceeds the limit, quickly eliminating the risk by adopting a collaborative suppression strategy of stepping vacuum and stepped power reduction; two-stage residual errors are generated in parallel in the same control period, and are fed back to the control quantity of the next period in real time after dynamic weight fusion; self-adaptively adjusting a confidence interval and a control dead zone through kernel density drift detection of an evaporation rate sequence; the zero drift of the nitrogen flow sensor is corrected on line through evaporation mass conservation; when the cloud model is updated, only the sparse difference tensor is pulled, and through local fusion of the lightweight differential network, the precision is reduced, i.e., automatic rollback is realized. The concentration safety, the end point precision and the maintenance convenience can be remarkably improved.

The utility model provides a vulcanizing machine nitrogen recovery system which comprises a nitrogen storage tank for storing nitrogen; the main pipeline is communicated with an outlet of the nitrogen storage tank; and the diverging pipe is positioned between the outlet of the nitrogen storage tank and the main pipeline, and the nitrogen flow rate of the main pipeline is reduced and the pressure of the main pipeline is ensured to meet an expected target by diverging the cross sectional area of the pipeline. By arranging the diverging pipe between the outlet of the nitrogen storage tank and the inlet of the main pipeline, the flow rate of nitrogen can be remarkably reduced, erosive wear to the main pipeline is reduced, the reliability of the system is improved, the service life of the system is prolonged, and meanwhile, the pressure of the main pipeline can be kept within a reasonable range.

The present application relates to a kind of water coal slurry gasification process feed system and anti-blocking method, the present application adopts the balanced distribution technology of internal and external coal slurry passage of branch flow and throttling component combination, can when the flow of outside coal slurry passage is too low (when the flow of outside coal slurry passage is low to 10%~40% of normal flow value), trigger to open protection nitrogen gas bypass, nitrogen flow is maintained 100~1000Nm 3 / h at this time, not only can effectively remove the coal slurry remaining in the passage under continuous production state, leave certain buffer time for production adjustment, but also can effectively prevent high temperature crude synthesis gas (1100~1300℃) in gasifier from backflowing into burner and connecting pipeline to avoid burner and connecting pipeline from being damaged due to strong heat action, to achieve the purpose of protecting burner. That is, through the nitrogen purging system provided by the present application, the risk of triggering interlock shutdown when the flow of outside coal slurry passage is too low can be effectively prevented, and low-flow high-pressure nitrogen gas is used to protect the gasifier device.

The invention discloses a depression treatment device based on acute intermittent hypoxia adenosine induction. The depression treatment device comprises an intermittent hypoxia generator and a positive pressure breathing mask communicated with the intermittent hypoxia generator. The intermittent low-oxygen generator comprises a nitrogen generator and an air compressor; an output pipeline of the nitrogen generator and an output pipeline of the air compressor are converged and then are connected into a breathing air pipe to be communicated with the positive pressure breathing mask; the nitrogen generator provides constant pressure for an output pipeline of the nitrogen generator, and the nitrogen flow of the output pipeline is controlled through a flow valve. The air compressor provides constant pressure for an output pipeline of the air compressor, and a flow valve is adopted to control the air flow of the output pipeline of the air compressor. The pressure of an output pipeline of the nitrogen generator is the same as that of an output pipeline of the air compressor and is higher than ambient atmospheric pressure; the positive pressure breathing mask is provided with a sealing ring attached to the face of the human body. According to the invention, low oxygen-normal oxygen switching can be realized, adenosine generation is induced, and an exact anti-depression treatment effect is obtained.

According to the sintering furnace system, the electronic pressure gauge is arranged between the nitrogen supply device and the furnace body, and the electronic pressure gauge can detect the nitrogen flow between the nitrogen supply device and the furnace body. A first pneumatic valve and a first controller are arranged between the hydrogen supply device and the furnace body, and the first controller is in communication connection with the electronic pressure gauge. When the pressure value of the nitrogen is abnormal, the electronic pressure gauge can detect the abnormal flow of the nitrogen and transmit an abnormal signal to the first controller, and the first controller can automatically and timely cut off the supply of the hydrogen by the first pneumatic valve, so that the potential safety hazard caused by sharp increase of the concentration of the hydrogen in the furnace body is reduced.

The invention provides cable core processing equipment. The cable core processing equipment comprises a crosslinking room, a drying pipeline, an extrusion molding assembly, a crosslinking pipeline and a nitrogen circulation assembly, the drying pipeline is arranged in the cross-linking room, and a water-blocking conductor penetrates through the drying pipeline; the extrusion molding assembly is arranged at a discharge port of the drying pipeline, and the extrusion molding assembly is configured to extrude an insulating layer on the periphery of the water-blocking conductor to form a cable core; the cross-linking pipeline is arranged in the cross-linking room, and the cable core penetrates through the cross-linking pipeline; the nitrogen circulation assembly is communicated with the drying pipeline and used for providing first nitrogen flow for the drying pipeline, the first nitrogen flow is configured to dry the water-blocking conductor, and the nitrogen circulation assembly is further communicated with the cross-linking pipeline and used for providing second nitrogen flow for the cross-linking pipeline.

The invention discloses an oxygen analyzer and sensor replacement structure, which comprises a shell and further comprises a sensor, the detection part is arranged in the middle of the conveying assembly and used for detecting the oxygen content and the nitrogen flow. Through cooperation of the sealing assembly, the pressing plate and other structures, the sensor body is conveniently sealed, the sensor body is pressed down and fixed through the pressing plate, the first sealing piece is extruded by the sensor body and the detection cavity, the first sealing piece seals the sensor body and the detection cavity, and the detection precision is improved. The first sealing element is extruded into the middle of the sensor body so as to guarantee the sealing performance between the sensor body and the detection cavity, the second sealing element is extruded into the arc-shaped groove in the middle of the sensor body so as to carry out second sealing between the sensor body and the detection cavity, and the sealing performance between the sensor body and the detection cavity is guaranteed through the two sealing elements. And stable operation of the sensor body which is pressed down and fixed is ensured.

The present invention provides a load tracking and automatic control method for an air separation unit in nonferrous metal smelting, relating to the field of computer processing technology. The method comprises the following steps: S01, using a DCS system to detect in real time the flow rate data of oxygen products delivered from the air separation unit. The flow rate data includes: the flow rate of oxygen 1 product detected by FI1511; the flow rate of oxygen 2 product detected by FI1512; the flow rate of oxygen 3 product detected by FI1513; and the flow rate of pressurized nitrogen detected by FI1501; S02, using FSP1294 as the set value for the load control loop FIC1294 of the main raw air compressor, and performing closed-loop regulation of the compressor through the DCS system. This invention achieves precise control of the oxygen product load by real-time monitoring of client oxygen consumption and dynamically matching the raw air supply and key operating parameters of the distillation tower without manual intervention or complex data models, while ensuring the stability of the main distillation system.