74 results about "Nitrogen flow" patented technology

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.

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 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 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 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 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.

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 utility model discloses a nitrogen zero correction device which comprises a base plate, a containing groove is formed in the surface of one end of the base plate, a nitrogen cylinder is arranged in the containing groove, a flow control valve and a mixing tank are fixedly installed on the upper surface of the base plate, and the nitrogen cylinder, the flow control valve and the mixing tank are sequentially communicated and connected through connecting pipes. The outer wall of one side of the mixing tank is communicated and connected with one end of a gas conveying pipe, the other end of the gas conveying pipe is communicated and connected with a gas supply connector, the nitrogen flow is accurately controlled through the flow control valve, the pressure is accurately adjusted through the pressure adjusting valve, it is comprehensively guaranteed that the state of nitrogen entering a detection instrument is stable, and the accuracy of zero correction is improved. The nitrogen cylinder fixing mechanism stably fixes the nitrogen cylinder, so that the nitrogen cylinder is effectively prevented from shaking, loosening of the connecting pipe and gas leakage are avoided, safe and stable operation of the device is ensured, and a reliable zero correction environment is provided for a detection instrument.

This invention relates to solid waste resource utilization technology and discloses a solid waste recycling device for furfurylic acid processing, comprising an anaerobic pyrolysis carbonization furnace and a protective gas flow adaptive adjustment system. The adjustment system includes: a safety risk assessment module, which obtains a safety monitoring coefficient based on combustible gas concentration and temperature gradient; a processing load sensing module, which obtains a load coefficient based on feed rate and gas production flow; a comprehensive demand decision module, which obtains a comprehensive demand coefficient based on the load coefficient, safety monitoring coefficient, waste moisture content, and particle size; an operational stability monitoring module, which obtains a stability coefficient based on multi-point oxygen concentration and furnace pressure; and a flow precision control module, which calculates the target nitrogen flow rate based on the larger value of the comprehensive demand coefficient and the stability coefficient and adjusts it in real time. This invention achieves dynamic and precise control of the protective gas flow rate through multi-source parameter fusion and nonlinear decision-making, optimizing operational energy consumption and pyrolysis efficiency while ensuring the safety of the anaerobic environment.

The application discloses a nitrogen protection heat treatment process and system suitable for iron-nickel alloy parts, relates to the technical field of heat treatment, and comprises the following steps: S1, feeding and nitrogen replacement; S2, preheating; S3, heating; and S4, cooling; wherein, in the continuous furnace formed by the preheating section, the heating furnace and the water cooling section, by controlling the nitrogen flow distribution, the nitrogen flow of the heating furnace region is greater than that of the inlet of the preheating section and the outlet region of the water cooling section, the continuous nitrogen flow is used to form a positive pressure in the furnace, air is driven away from the feeding port and the discharging port of the furnace, the furnace is ensured to be filled with nitrogen, and the iron-nickel alloy parts are limited to be oxidized in a physical isolation mode; and the workpiece temperature at the outlet of the curtain air cooling section is controlled to be lower than the oxidation temperature of the workpiece. The application can improve the heat treatment effect of the iron-nickel alloy parts.

This utility model discloses a parallel pulverized coal injection tank coal outlet pipe anti-blockage and detection device, relating to the field of pulverized coal injection technology. It includes several injection tanks, each connected to a coal conveying branch pipe. The other end of each coal conveying branch pipe is connected to a main coal conveying pipe, which in turn connects to the blast furnace tuyeres. Each coal conveying branch pipe includes a coal discharge valve connected to the main coal conveying pipe. A corresponding auxiliary blowing valve branch pipe is also connected between each coal discharge valve and the main coal conveying pipe. The other end of each auxiliary blowing valve branch pipe is connected to a nitrogen source. Each auxiliary blowing valve branch pipe includes an auxiliary blowing shut-off valve and a flow switch. The auxiliary blowing shut-off valve controls the opening and closing of the auxiliary blowing valve branch pipe to prevent pipe blockage. The flow switch detects whether the auxiliary nitrogen flow rate in the auxiliary blowing valve branch pipe is normal, thereby determining whether the pipe is blocked. This device can prevent large fluctuations in injection and coal blockage accidents caused by pulverized coal backflow, and provides early warning by determining whether the pipe is blocked, thus achieving the effect of preventing coal shortage accidents caused by pulverized coal backflow.

The utility model provides an air distribution mechanism and a vacuumizing system, and relates to the technical field of vacuum, the air distribution mechanism comprises a valve body and an adjusting assembly. The valve body is provided with a first cavity, an air inlet and at least two adjusting openings with different diameters. The adjusting assembly comprises a rotating shaft rotationally connected with the valve body and a rotating disc connected with the rotating shaft. The rotating disc is provided with a through hole used for being communicated with a vacuum pump. Moreover, the rotating disc is used for rotating under the driving of the rotating shaft, so that the through hole is communicated with one of the adjusting openings, and the other adjusting openings are blocked. Based on the arrangement, different adjusting openings can be selectively opened or closed through rotation of the rotating disc in the adjusting assembly. Due to the fact that the different adjusting openings have different diameters, the gas distribution mechanism achieves flow control over nitrogen, the flow of the nitrogen input into the vacuum pump can meet the actual working condition requirement, and the purging effect of different intensities is achieved.

Disclosed are a nitrogen gas temperature control system for methane gas-reducing catalyst filter regeneration, and a method thereof. The nitrogen gas temperature control system for methane gas-reducing catalyst filter regeneration, according to one embodiment of the present invention, comprises: a case provided in the form of a pipe and having an injection port and a discharge port in the respective ends thereof; an insulating material inserted inside the case; a heating coil provided inside the insulating material; and a control unit for controlling the inflow of nitrogen gas into the case, and heating the nitrogen gas introduced into the case to a preset target temperature. The control unit comprises: a gas injection unit for injecting nitrogen gas into the case through the injection port provided in the case; a heating control unit for measuring the nitrogen gas temperature at the injection port and the discharge port through at least one temperature sensor provided inside the case, and controlling a current applied to the heating coil; and a display unit for displaying at least any one among whether the heating coil is generating heat, the cumulative heat generation time of the heating coil, the flow rate and pressure of the nitrogen gas injected into the case, the nitrogen gas temperature at the injection port area, and the nitrogen gas temperature at the discharge port area. The heating coil has a hollow spiral structure in which a heat wire is wound in an elliptical shape surrounding the hollow.

The invention relates to a method for preventing blowing blast of a converter, and belongs to the technical field of steelmaking. The method specifically comprises the following steps: (1) dynamically adjusting the proportion of crushed materials and light and thin materials in the scrap steel entering the converter according to the proportion of molten iron and scrap steel of the converter; (2) controlling the slag remaining amount of each converter, and controlling the slag splashing flow; (3) arranging a flow regulating valve for a gas supply system of the evaporative cooler, and setting a nitrogen flow step-by-step increasing program according to the ignition time of the converter; and meanwhile, oxygen pressure, flow and oxygen lance position control at the converter ignition stage under different molten iron and scrap steel proportions is implemented. According to the method for preventing the converter from being blown and exploded, the converter of the semi-dry dedusting system can be effectively prevented from being ignited and exploded, and normal operation and safety of the semi-dry dedusting converter system are guaranteed.

The invention provides a high-molecular polymer film separation nitrogen intelligent regulation and control method and system, and the method comprises the steps: processing a pressure fluctuation signal and a nitrogen flow velocity historical record through employing a convolutional neural network model according to a film microstructure variation parameter, and determining a purity reduction risk threshold value; obtaining a continuous operation compatibility index from the flow velocity stability correction scheme, judging whether the index meets a separation efficiency requirement or not, and obtaining optimized thin film configuration data; aiming at the optimized thin film configuration data, simulating nitrogen flow velocity change in a pressure fluctuation scene by adopting a genetic algorithm, and determining compensation vectors with non-uniform distribution and non-uniform thickness; according to the compensation vector, thin film microstructure variation parameters are updated, whether flow velocity stability is achieved in polymer chain arrangement regulation or not is judged, and a final separation efficiency improvement path is obtained; a real-time adjustment module is guided through the final separation efficiency improvement path, pressure fluctuation signals in continuous operation are processed, and stable nitrogen flow rate output is obtained.

The application discloses a method for improving the morphology of corrosion, which comprises the following steps: S1, first, checking the equipment state before corrosion, ensuring that there is no abnormality, then adjusting the process, adopting a mechanical chemical corrosion process to perform chemical thinning on a semiconductor silicon wafer, preparing auxiliary materials required in the process, and adjusting process parameters such as the rotating speed of a mechanical arm of a corrosion machine, the nitrogen path in an acid tank, the temperature of a corrosion ice machine and the nitrogen flow; S2, then, adjusting the concentration and temperature of a liquid medicine to determine the removal rate of corrosion, thereby affecting the corrosion morphology of the final corrosion, and ensuring that the position setting of the moving nitrogen pipe in the acid tank is consistent with the actual moving position. The application adjusts the concentration of mixed acid, the moving position of the nitrogen pipe and the nitrogen flow and the like to improve the uniformity of the surface corrosion of the silicon wafer in the corrosion process, achieves the purpose of improving the morphology of the silicon wafer, and better improves the process capacity and reduces the product parameter failure rate.

This utility model relates to the field of forging processing technology and discloses a heating furnace for high-strength wear-resistant forgings. The furnace includes a furnace body with an internal cavity. The inner layer of the furnace body is made of aluminum alloy, with an insulation layer on the outer layer and a high-temperature resistant layer on the inner layer. The insulation layer is made of lightweight refractory fiber material, and the high-temperature resistant layer is constructed of high-alumina refractory bricks. In this utility model, multiple heating elements are activated by operation on the control box to heat the wear-resistant forgings. Temperature sensors monitor the temperature inside the furnace body to achieve temperature control, resulting in a more uniform temperature within the furnace. Nitrogen gas is supplied to the furnace body through a nitrogen supply pipe, and a flow regulating valve adjusts the nitrogen flow rate to maintain a stable inert atmosphere inside the furnace, preventing oxidation of the wear-resistant forgings during heating. This improves heating efficiency, reduces energy consumption, and ensures stable furnace atmosphere control.

The invention belongs to the technical field of blast furnace ironmaking, and discloses a blowing-out process and a safety control method of a hydrogen-rich carbon circulating oxygen blast furnace. According to the method, safe and controllable furnace shutdown is achieved through systematic processes of preparation before furnace shutdown, precise load design, dynamic medium regulation and control, furnace top temperature and water fetching control, hydrogen safety monitoring and multi-dimensional end point judgment. The furnace condition is adjusted and the furnace is thermally washed before blowing out, the comprehensive ore-coke ratio load of 3.0-3.4 is designed based on the basic furnace temperature, the furnace top temperature is strictly controlled to be smaller than or equal to 350 DEG C in the process, the nitrogen flow is cut in advance, the nitrogen flow is increased in a stepped mode, the gas cutting operation is triggered with the hydrogen content being 12% as the threshold value, and the blowing-out end point is determined by combining a radar stock rod, wind pressure monitoring and manual tuyere exploration. According to the method, the hydrogen explosion risk is effectively prevented and controlled, the thermal state is accurately controlled, and the method is suitable for HyCROF and similar low-carbon blast furnaces through industrial verification and has extremely high safety, reliability and popularization value.

The utility model relates to the technical field of gas conveying and material distribution, discloses a gas conveying device capable of uniformly distributing materials, and solves the problem that in a nitrogen conveying system, when the materials are distributed from a single pipeline to a plurality of cavities, the materials cannot be uniformly distributed by arranging a distribution assembly which is used for uniformly distributing the materials. And the production efficiency is reduced or the product quality problem is caused by non-uniform distribution. In the prior art, a conventional distribution device generally adopts a guide structure with a fixed angle, the material flowing direction is difficult to dynamically adjust, and material accumulation or distribution deviation is caused, for example, in a solid-phase tackifying air conveying system, a product is conveyed through an air conveying pipeline, and the conveying direction of the air conveying pipeline is fixed. The problem that the production efficiency is severely influenced by material accumulation or distribution deviation caused by uneven distribution when the nitrogen is distributed to a plurality of cavities due to limited nitrogen flow direction adjusting capability in the prior art is solved.

The application discloses a kind of medical copper pipe automatic brazing two-way nitrogen gas collaborative protection system, method and medium, it is related to intelligent manufacturing equipment industry technical field, system includes: pipe nitrogen delivery component is communicated with the inner cavity of the medical copper pipe to be welded, for to the inside of the medical copper pipe to be welded high-purity nitrogen gas is supplied and maintains micro-positive pressure environment in pipe;Welding area nitrogen gas covering component is integrated in the coaxial periphery of inductive welding head, and is equipped with annular porous nozzle array, and uniform, continuous nitrogen gas protection layer is formed to welding point area in the welding process;Intelligent joint control module receives two-way nitrogen gas flow signal, and with welding robot PLC control module communication, intelligent joint control module monitors two-way nitrogen gas flow, executes dynamic flow matching strategy based on copper pipe geometric parameter and environmental disturbance parameter, and triggers interlock response instruction when detecting nitrogen gas flow anomaly.The application solves the quality defect and process uncontrollable problem caused by oxidation in the process of medical copper pipe automatic brazing.

This utility model discloses a cell cryopreservation device for CHO protein production, comprising: an insulated container; and a cooling air guide assembly mounted on the insulated container, the cooling air guide assembly being used to guide nitrogen gas for freezing. The device places cell tubes on a tray, and the tubes are fixed in place by springs and clamps within a mounting ring, ensuring tube stability and facilitating subsequent operations. Subsequently, a sealing cover assembly is placed on top, and the cover body is securely installed using a mounting collar. The sealing strip provides a good seal, preventing liquid nitrogen leakage. Next, liquid nitrogen is released from the liquid nitrogen tank, evenly distributed through channels formed by an outer and inner annular guide plates. The nitrogen flow is guided by a connecting rod, allowing the nitrogen gas to diffuse evenly within the insulated container, avoiding the convection impact and temperature unevenness problems caused by direct bottom venting in traditional methods. This design effectively solves the problems of nitrogen rising causing culture dishes to shake, damaging cell stability, and leading to uneven temperature and affecting preservation results.

The present application relates to air separation device system control technical field, specifically disclose a kind of automatic constant load control method of air separation device, material balance module system air transparent guide vane tracks raw material air flow of purification system, editing module system controls air transparent guide vane constant purification system processing air volume;Editing module system controls oxygen production regulating valve to track actual oxygen flow;3) editing module system controls nitrogen production regulating valve to track the oxygen, nitrogen multiple of actual oxygen flow;Editing module system controls dirty nitrogen production regulating valve to track actual dirty nitrogen flow;Expansion air volume tracks oxygen production or processing air volume editing module control expander nozzle opening and bypass valve, adjust expansion air into upper column processing air volume and bypass air volume;Process argon flow regulating valve tracks process argon flow editing module system control;The present application does not independently unit configuration automatic load variation system with additional investment, realizes processing air volume and output balance prediction, material balance.

To provide a compact inert gas supply system in an engine system equipped with a double pipe through which hydrogen gas and inert gas flow. [Solution] The engine system S comprises a hydrogen engine 1 mounted on a ship 1000, a hydrogen flow passage 41 through which hydrogen gas supplied to the hydrogen engine 1 circulates, a generator 51 mounted on the ship 1000 and generating an inert gas, a nitrogen flow passage 72 including outer pipes 72c, 72d surrounding the inner pipes 41a, 41b so as to form a double pipe 8 with at least a portion of the hydrogen flow passage 41 as the inner pipes 41a, 41b, and discharging nitrogen gas supplied from the generator 51 overboard via the outer pipes 72c, 72d, and a flow rate adjustment unit 73 positioned closer to the hydrogen engine 1 than the generator 51 on the flow path formed by the nitrogen flow passage 72 and adjusting the flow rate of nitrogen gas in the nitrogen flow passage 72.