1373results about "Oxygen preparation" patented technology

The invention discloses a split type vehicle-mounted intelligent oxygen supply system based on the VPSA technology and a control method, and the system comprises an air compressor which is arranged at the inner side of a wheel cover protection plate of a rear wheel of a vehicle and is used for compressing air and discharging the compressed air to a molecular sieve assembly; the molecular sieve assembly is arranged below a spare tire in a trunk of the vehicle and is used for separating nitrogen from oxygen in the air to generate oxygen; the oxygen conveying pipe is arranged on the inner side of the vehicle roof and connected with an oxygen outlet of the molecular sieve assembly, and an oxygen outlet is formed in the position, located above each seat, of the oxygen conveying pipe; the detection module comprises an altitude sensor and an oxygen concentration sensor, the altitude sensor is installed on the molecular sieve assembly, and the oxygen concentration sensor is arranged on a ceiling in a vehicle compartment; distributed arrangement is adopted, all parts of the oxygen supply system are installed at different positions of the vehicle, the space occupied by the oxygen generation system can be reduced, and meanwhile directional oxygen supply to specific seats is achieved through the distributed oxygen outlets.

The invention discloses a PSA oxygen production and nitrogen recovery cooperative control method and system, and relates to the technical field of gas separation. The method comprises the following steps: establishing a dynamic multi-target evaluation function comprising a plurality of performance indexes such as air compressor energy consumption, vacuum pump energy consumption, oxygen purity and nitrogen recovery rate, and collecting pressure, temperature, gas components and flow data in an adsorption tower in real time; in the adsorption stage, based on the real-time data and the current oxygen demand, a first machine learning model is used for generating and executing a dynamic pressure adjusting strategy for the air compressor; in a desorption stage, predicting an optimal vacuum degree curve based on historical desorption data by utilizing a second machine learning model, generating a start-stop and pumping rate control strategy of the vacuum pump according to the optimal vacuum degree curve, and determining the recovery rate of the vacuum pump according to a comparison result of the real-time nitrogen concentration and a preset recovery concentration threshold value. And desorption airflow is controlled to enter the nitrogen recovery pipeline or be directly discharged through the valve.

The invention relates to the technical field of oxygen generators, in particular to an oxygen generator with oxygen output concentration monitoring and pre-compensation functions. The oxygen generator comprises a lower buffer valve, a lower buffer communication valve, an upper buffer valve, a lower buffer valve, a data acquisition module, a data processing module and an adjusting module, wherein the data acquisition module is used for acquiring pressure data and oxygen concentration at an outlet of the oxygen generator; the data processing module is used for obtaining the high-pressure degree of each circulation according to the pressure data and the oxygen concentration at the outlet of each cycle of each circulation of oxygen discharge, and then determining the high-pressure duration and the current compensation demand degree; acquiring a slow voltage-sharing demand factor according to the current compensation demand degree and the duration of the high-voltage duration; and the adjusting module is used for adjusting opening and closing of the valve according to the slow pressure equalizing demand. According to the invention, the influence of temperature on the adsorption efficiency of the zeolite molecular sieve is reduced, the concentration of oxygen produced by the oxygen generator is maintained, and the pre-compensation of the oxygen concentration is realized.

The invention discloses a plant root system three-dimensional ventilation system based on a water-soluble PVA film and a use method of the plant root system three-dimensional ventilation system. The plant root system three-dimensional ventilation system comprises at least one water-soluble breathing core packaging unit, and the water-soluble breathing core packaging unit is formed by wrapping ventilation medium particles with a PVA packaging layer; a layer of breathable medium particles is laid at the bottom of the flowerpot, and the water-soluble breathing core packaging unit is laid on the inner wall of the flowerpot in a surrounding mode; the planting soil is filled on the breathable medium particles and on the inner side of the water-soluble breathing core packaging unit; a layer of breathable medium particles is laid on the planting soil; after the PVA packaging layer is dissolved by watering, the breathable medium particles and the planting soil are attached to form a three-dimensional breathable system. The air circulation efficiency in the flowerpot is remarkably improved, and the root stuffy and rotten problems are solved. The system has environmental protection property, adaptability and long-term effect, and is suitable for family gardening and large-scale planting.

The invention relates to the technical field of molecular sieve and dust separation, in particular to a pressure swing adsorption molecular sieve screening device which is characterized in that the upper end of a screening pipe is connected with the upper end of a dust conveying pipe, and the lower end of the dust conveying pipe is connected with the lower end of a primary dust collecting pipe; a plurality of air supply branch pipes are arranged in the lower portion of the screening pipe, a feeding port is formed in one side of the upper portion of the screening pipe and connected with a feeding hopper, the feeding hopper is connected with a feeding pipe, and a transverse dispersing device and a longitudinal dispersing device are arranged on the inclined face in the feeding hopper. And a screen is arranged in the screening pipe, and the screen is arranged between the feeding port and the air supply branch pipe. The air supply branch pipe on the lower portion of the screening pipe provides airflow into the screening pipe and is used for separating dust and a molecular sieve; the device is used for regularly screening and removing pulverized molecular sieve particles, so that the requirement of frequent replacement caused by aging and crushing of the molecular sieve is reduced, the production cost is reduced, and the oxygen production efficiency and the product quality are improved.

The invention discloses a molecular film type automotive nitrogen and oxygen separation device which comprises a turbocharger, a nitrogen and oxygen separator, a gas inlet valve, a gas outlet valve, a negative pressure pump and an electric control throttling valve. The turbocharger is driven by a turbine in an automobile turbocharger, so that the air is compressed to be conveyed to two paths of the nitrogen and oxygen separation device, the nitrogen and oxygen separation device can separate oxygen from the air, the air with high oxygen content is output, and the air is supplied to an engine for use through the gas outlet valve. The two paths of the nitrogen and oxygen separation device work alternately, when the temperature of the two paths of the nitrogen and oxygen separation device is too high to influence oxygen production efficiency, a main air inlet pipeline is opened to provide air normally by controlling the opening degree of the electric control throttling valve, and thus the phenomena of gas circuit plugging and engine stalling are avoided. According to the automotive nitrogen and oxygen separation device, the two branch paths work alternately, high concentration oxygen can be supplied to the engine continuously so that fuel can burn and act, and the burning utilization rate of the fuel is improved.

The invention discloses an intelligent altitude-adaptive pressure swing adsorption oxygen generator and a control method thereof.The intelligent altitude-adaptive pressure swing adsorption oxygen generator comprises a shell, an oil-free compressor is arranged in the shell and connected with an electromagnetic switching valve through a pipeline, and the electromagnetic switching valve is connected with a double-molecular-sieve adsorption tower through a pipeline; the double-molecular sieve adsorption tower is connected with the oxygen storage tank through a pipeline, an output port is formed in one side of the oxygen storage tank, a main control board is arranged in the shell, a control panel is arranged on the outer surface of the shell, a power switch is arranged on the control panel, and a pressure sensor, an altitude sensor and a CPU processing center are arranged on the main control board; according to the altitude sensor technology, the altitude of the working environment of the oxygenerator is intelligently identified, and the parameter configuration of the oxygenerator is automatically adjusted to correspondingly match the current altitude, so that the oxygenerator can generate oxygen with the concentration meeting the standard requirement at each altitude.

The utility model relates to a small oxygen generator with a noise reduction structure, which comprises an oxygen generation assembly, a packaging part and a component, the oxygen generation assembly is provided with a gas inlet end and a nitrogen discharge end, the component is arranged in the packaging part, and the oxygen generation assembly is arranged on the component and keeps non-contact with the packaging part; the component is of a flexible structure, an air inlet branch and an air outlet branch which are independent and arranged all over are constructed on the component, the air inlet branch is configured to be communicated with the air inlet end, and the air outlet branch is configured to be communicated with the nitrogen discharging end. According to the utility model, the plurality of air inlet branches and the plurality of exhaust branches are matched, so that an air inlet path and an exhaust path can form a diffusion effect, and by virtue of the flexible characteristic of components, the noise generated by air movement can be eliminated to a certain extent, and meanwhile, the transmission of vibration generated by the compressor to the outside is reduced; therefore, the formation of noise can be controlled to a certain extent on the whole.

The utility model discloses a modularized pressure swing adsorption oxygen generation device which comprises an oxygen generation tank, an air inlet mechanism arranged on one side of the oxygen generation tank, an auxiliary mechanism mounted on the surface of the oxygen generation tank, a collecting mechanism arranged on one side of the oxygen generation tank, and a detection mechanism mounted below the oxygen generation tank. According to the oxygen generation device, air entering the oxygen generation tank can be subjected to auxiliary filtering treatment, the cleanliness of the air is improved, a filtering part can be subjected to auxiliary cleaning, the situation that the filtering part is blocked or unsmooth in air inflow due to filtered impurities is reduced, meanwhile, the oxygen generation tank is provided with a detection mechanism, oxygen is conveniently detected, and the oxygen generation efficiency is improved. When the detected purity is not enough, auxiliary filtering and purifying treatment can be carried out, the oxygen production purity can be improved, an auxiliary mechanism is arranged on the oxygen production tank, auxiliary cooling and heat dissipation treatment can be conveniently carried out on conveyed oxygen production gas, oxygen production treatment can be better carried out, and meanwhile, a collecting mechanism is arranged on the oxygen production tank; other gases generated during oxygen production can be conveniently collected.

The utility model relates to the technical field of medical oxygen generators, and discloses a high-efficiency energy-saving PSA oxygen generator which comprises an adsorption tank, a gas inlet pipeline, a nitrogen discharge pipeline, an I-shaped balance pipeline, a first purging pipeline, a second purging pipeline, an oxygen outlet pipeline, a purity measurement pipeline, a qualified gas pipeline, an unqualified gas pipeline and an emptying pipeline, a throttling element is arranged on each of an inlet pipeline and an outlet pipeline of the adsorption tank and used for controlling the flow of gas when the adsorption tank is balanced, impact of high-speed gas on a molecular sieve is avoided, oxygen-enriched air can stay at the top of the adsorption tank in various balance modes, and desorbed low-concentration oxygen is adsorbed again to obtain the oxygen-enriched air. And the oxygen recovery rate is improved, so that the air consumption is reduced, the required power of an air compressor is reduced, and the energy consumption required by oxygen production is reduced.

The invention relates to the technical field of gas source systems, in particular to a gas source system and a gas source system control method. The air compression system is used for compressing input air under the control of the control equipment to generate compressed air; the compressed air is transmitted to the air storage system and / or the oxygen generation system under the control of the control equipment; the air storage system is used for storing compressed air under the control of the control equipment, so that the air utilization system can use the compressed air conveniently; the oxygen generation system is used for generating oxygen for the compressed air transmitted by the air compression system under the control of the control equipment; and the control equipment is used for controlling the air compression system to compress the input air according to the current air storage amount in the air storage system and / or the current oxygen content in the target carrying equipment, and controlling the air storage system to store the compressed air and / or controlling the oxygen generation system to generate oxygen for the compressed air. And multiple targets of cost reduction, efficiency improvement, safety and expansion are realized.

The emergency lifesaving oxygen supply device in the mine comprises a compressor, two adsorption tanks and an air storage tank, an air inlet space and an adsorption space which are coaxially arranged are arranged in a tank body of each adsorption tank, and a spiral blade is arranged in each adsorption space; the spiral blade rotates to form upward axial conveying of molecular sieve particles in the adsorption space so as to form circulation of the molecular sieve particles between the adsorption space and the air inlet space, a rotatable separation cup is arranged in the air inlet space, and a separation net in the separation cup performs screening and powder removal on the molecular sieve particles; according to the emergency lifesaving oxygen supply device in the mine, the adsorption space of the radial flow adsorption tower is improved, a molecular sieve particle cleaning function is added, molecular sieve particles can be separated to remove powder when passing through the separation cup, the cleaning work of the molecular sieve particles can be carried out in the adsorption tank, the adsorption tank does not need to be opened, and the treatment process is greatly simplified.

The invention provides an electro / thermochemical gradient hydrogen production system and method for solar radiation energy grading and residual light energy thermal complementary coupling. The system comprises a light condensation assembly; the frequency division assembly is used for grading solar spectrum radiation; a photovoltaic cell power generation device; the methane oxygen-enriched combustion high-temperature photovoltaic power generation device is used for realizing oxygen-enriched combustion of natural gas by utilizing residual heat heat energy and generating power by utilizing radiation energy generated by high-temperature flue gas generated after combustion; the solid oxide electrolytic tank device is used for pushing solid oxide to electrolyze water to produce hydrogen by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step; and the thermal chemical reaction device is used for promoting each step of thermal chemical reaction by utilizing heat energy and electric energy contained in the high-temperature flue gas step by step. The energy source of the system is solar radiation and natural gas, hydrogen and electricity are produced, the system utilizes different energy conversion modes to achieve temperature gradient ordered conversion and utilization of residual light energy after solar frequency division, and complementary coupling of different qualities is achieved on the basis of energy gradient conversion.

The invention discloses an oxygen separation device for a pressure swing adsorption system, and relates to the technical field of oxygen separation. The oxygen separation device for the pressure swing adsorption system comprises an oxygen separation tank; the central shaft is arranged in the oxygen separation tank in the axial direction of the oxygen separation tank and can rotate around the axis of the central shaft; the zeolite molecular sieves sleeve the outer side of the central shaft and are uniformly distributed along the axial direction of the central shaft; and the up-down transposition mechanism is arranged on the zeolite molecular sieve, can synchronously act along with the rotation of the central shaft, and is used for driving the zeolite particles to generate position alternation in the axial direction. By arranging the up-down transposition mechanism synchronously acting with the rotary drum, the zeolite particles are driven to continuously perform ordered position alternation in the axial direction, so that dynamic cyclic replacement of adsorption areas is realized, the zeolite particles at different positions alternately participate in the adsorption process, the load of each area is effectively balanced, and local premature failure is prevented.

The invention discloses a nested conical oxygen production grain manufacturing method and structure, and relates to the technical field of oxygen production grain processing, and the nested conical oxygen production grain manufacturing method comprises the steps that oxygen production main powder is put into a mold cavity and pressed through a main pressing head to obtain a conical main grain; a central groove of the conical main grain is filled with ignition powder for pressing, and an ignition-main grain is obtained; a piezoelectric resistance electric heating fuse and ignition powder are placed in the center of the ignition-main grain; pressing the ignition-main grain, the ignition powder and the anti-piezoelectric hot fuze to obtain an oxygen production grain; the electric heating wire of the anti-voltage electric heating fuse keeps the shape of the electric heating wire framework. According to the invention, mutual wrapping of three agents is ensured through a nested conical shape, so that the ignition agent can be fully ignited, and the oxygen production agent can be fully ignited by the ignition agent. Through the buried anti-voltage electric heating wire and the skeleton structure, the electric heating wire is ensured to be buried in the pressed ignition powder in a fixed structure, and the performance of the electric heating wire is fully exerted.

A surface water treatment system may include a surface water source and an oxygen nanobubble device. The oxygen nanobubble device may include an air compressor configured to generate compressed air, an air dryer coupled downstream from the air compressor, and an oxygen concentrator coupled downstream from the air dryer. The oxygen nanobubble device may also include a recirculating surface water pump coupled to the surface water source. The oxygen nanobubble device may also include an oxygen nanobubble generator coupled downstream from the recirculating surface water pump and coupled to the oxygen concentrator to generate oxygen nanobubbles within the surface water.

The utility model discloses an oxygen generator air inlet structure and an oxygen generator, and the oxygen generator air inlet structure comprises an air inlet groove arranged on an outer shell of the oxygen generator; the air inlet cover covers the open end of the air inlet groove; the air inlet cavity is defined by the air inlet groove and the air inlet cover; the first filtering piece is arranged in the air inlet cavity; a first air inlet used for leading in external air is formed between the air inlet cover and the groove wall of the air inlet groove in a surrounding mode. And an opening through which gas in the gas inlet cavity flows out is formed in the groove bottom of the gas inlet groove. The air inlet groove and the air inlet cover are arranged, so that a hidden air inlet structure is formed, and the appearance quality of the oxygen generator can be improved; and the air inlet structure is directly arranged in the shell, so that the structure is compact, the occupied space is reduced, and the market competitiveness is improved. The first filtering piece is arranged in the air inlet cavity and used for filtering air flowing in from the outside, dust and other impurities carried in the air are prevented from entering the shell, and the cleanliness of airflow entering the shell is guaranteed.

The invention relates to the technical field of oxygen production, in particular to a single-tower VPSA (vacuum pressure swing adsorption) skid-mounted oxygen production device applying a magnetic suspension fan and a fan pump, which comprises a first module and a second module, the first module comprises a magnetic suspension fan, an air cooler, an adsorption tower, an oxygen buffer tank I and a magnetic suspension fan pump; according to the invention, four storage cylinders for storing molecular sieves are arranged in the adsorption tower, and structures such as a locking mechanism, an upper electric telescopic cylinder and a lower electric telescopic cylinder are arranged, so that each storage cylinder can be automatically and independently taken out and poured out of the molecular sieves; and then a new molecular sieve is poured into the device, and the storage cylinder is sealed and installed back by the control equipment, so that the molecular sieve can be automatically replaced, a maintainer does not need to use a tool to disassemble a plurality of bolts and use a tool to replace the bolts, and the maintenance efficiency of the device is greatly improved.

The invention discloses an air separation pressure swing intelligent adsorption pollution discharge method, system and device combined with a pressure curve, and relates to the technical field of intelligent pollution discharge. The air separation pressure swing intelligent adsorption pollution discharge method, system and device combined with the pressure curve comprises the following steps: S1, collecting running state data in real time, and preprocessing the running state data; s2, performing pressure disturbance intensity analysis on the operation state data; s3, performing real-time analysis and feature extraction on the pressure curve; s4, performing start-stop risk prediction on the operation state data; and S5, integrating the operation state data, the pressure disturbance intensity analysis result and the start-stop risk prediction result to execute a pollution discharge control instruction. The problems that an air compressor and a pressure swing adsorption system lack linkage control based on pressure change, pollution discharge easily causes pressure fluctuation and frequent starting and stopping, energy consumption is increased, equipment abrasion is caused, and an existing control mode lacks a feedforward adjusting mechanism are solved.

The invention discloses a rotary molecular sieve oxygen generator, and belongs to the technical field of molecular sieve oxygen generation, the rotary molecular sieve oxygen generator comprises a base, one side of the top of the base is fixedly provided with an oxygen collecting bin, the base is fixedly provided with an oxygen outlet pipeline on one side of the top of the oxygen collecting bin, and the base is fixedly provided with a dehumidification bin on one side of the oxygen collecting bin; the rotary dehumidification mechanism is designed in the dehumidification bin, the core of the rotary dehumidification mechanism is that a heating chamber and a dehumidification chamber are independently arranged in the rotary bin, and the heating chamber and the dehumidification chamber are filled with a moisture-containing dehumidification molecular sieve and a dry dehumidification molecular sieve respectively. The continuous circulation of dehumidification and regeneration is achieved, humid air is introduced into the dehumidification chamber through the air suction pump, moisture is rapidly adsorbed by the dry dehumidification molecular sieve, efficient dehumidification is completed, the molecular sieve completing moisture absorption enters the heating chamber along with the rotating bin, moisture is rapidly desorbed under the action of hot air provided by the high-temperature air heater, and the adsorption performance is recovered.

The invention discloses a handheld oxygen generator in the field of oxygen generation equipment, which comprises an air pump assembly, an air inlet assembly, an air outlet assembly, molecular sieve tanks and an oxygen storage tank, a pressure preparation gas tank is arranged on a gas path structure between the two molecular sieve tanks and the oxygen storage tank, and oxygen-enriched gas adsorbed by the molecular sieve tanks firstly enters the pressure preparation gas tank to be stored and then enters the pressure preparation gas tank to be stored; and after the gas in the pressure preparation gas tank reaches the required pressure, the gas enters the oxygen storage tank. In the oxygen production process, gas can generate standby pressure in the standby pressure gas tank, so that the pressure of the molecular sieve tank is kept in a high-pressure range, the adsorption capacity of the molecular sieve on nitrogen in air is improved, the oxygen content of the oxygen production gas is improved, and the oxygen production amount can still be met under the condition that the filling amount of the molecular sieve is reduced; therefore, the sizes of the molecular sieve tank and the whole oxygen generator are reduced. In addition, oxygen is collected through the pressure preparation gas tank, oxygen is conveyed to the oxygen storage tank after certain pressure preparation is achieved, oxygen in the oxygen storage tank can be promoted to be collected, the pressure is increased, and the oxygen output requirement in the oxygen using state is met.

The utility model relates to the technical field of gas-liquid separation, and discloses a gas-liquid separation system of electrolytic bath test equipment, which comprises a first-stage gas-liquid separation tank, an injection port is fixedly connected to the outer wall of the first-stage gas-liquid separation tank, a second-stage gas-liquid separation tank is arranged on the outer wall of the first-stage gas-liquid separation tank, and the injection port is fixedly connected to the injection port. A gas exhaust port is formed in the top of the second-stage gas-liquid separation tank, a drain valve is arranged at the bottom of the second-stage gas-liquid separation tank, the drain valve is provided with a drainage assembly, and the drainage assembly is used for discharging liquid water in the second-stage gas-liquid separation tank. According to the gas-liquid separation system, liquid enters the drainage system through the steam trap after passing through the gas-liquid separation tank, gas upwards passes through the gas exhaust port, and generated hydrogen and oxygen are subjected to gas cooling and water separation treatment through the first-stage gas-liquid separation system and the second-stage gas-liquid separation system of the system, so that the problem that the water content of a gas source is relatively high is solved, and the flow measurement precision is improved.

The utility model discloses a vehicle-mounted oxygen generator, a vehicle-mounted oxygen generation system and a vehicle, and relates to the technical field of vehicle-mounted equipment. The vehicle-mounted oxygen generator comprises an installation support, an air inlet filter, an air compressor, a heat dissipation assembly, an electromagnetic valve set and a molecular sieve assembly, the air inlet filter, the air compressor, the heat dissipation assembly, the electromagnetic valve set and the molecular sieve assembly are arranged on the installation support and connected in sequence, and the vehicle-mounted oxygen generator achieves integrated and modular design and is easy to install in a vehicle. The molecular sieve assembly comprises at least two molecular sieve towers for adsorbing nitrogen and discharging oxygen, and the electromagnetic valve group can switch air intake and nitrogen discharge of the molecular sieve assembly, so that compressed air enters the specified molecular sieve towers, and the specified molecular sieve towers discharge nitrogen, so that continuous oxygen production and nitrogen discharge can be realized, and the device has the advantage of high efficiency; the vehicle-mounted oxygen generator can be remotely controlled through a remote control switch, and is convenient to operate; by providing oxygen into the vehicle, the breathing smoothness of a driver and passengers can be guaranteed, and the driving experience is improved.

The utility model discloses an oxygen generator and an intake air filter module thereof, comprising: a filter chamber detachably arranged inside the oxygen generator; the avoiding groove is concavely arranged along the cavity wall of the filtering cavity and is used for avoiding an air inlet pipe head communicated with a compressor; the air inlet pipe head extends into the receding groove, an air outlet hole matched with the air inlet pipe head is formed in the groove wall of the receding groove in a penetrating mode, and one end of the air inlet pipe head is installed at the air outlet hole in a connected mode. And the avoiding groove is formed, so that the air inlet pipe head extends into the avoiding groove, the structural arrangement of the filter cavity and the air inlet pipe head is compact, and the occupied space is reduced. The filter cavity is positioned in the oxygen generator, so that integral arrangement is realized, and the increase of the occupied space of the oxygen generator is avoided; the filter cavity is detachably arranged, so that when the filter part needs to be replaced, the filter cavity can be directly replaced, the efficiency of replacement operation is improved, and it is guaranteed that the filter part is installed in place.

The invention relates to the technical field of separation, and discloses a molecular sieve separation system for medical oxygen production, which comprises an adsorption separation group, a fluid control valve group, a pressure monitoring unit and a self-adaptive control center, the self-adaptive control center executes capacity locking logic and regeneration clamping logic based on fluid impedance fingerprint characteristics, monitoring the actual pressurizing duration of the adsorption pressurizing stage in real time, calculating a deviation value between the actual pressurizing duration and the reference adsorption duration, and generating a primary switching instruction; meanwhile, the real-time residual desorption pressure of the other adsorption bed layer is obtained and compared with a regeneration end point pressure threshold value, a final step sequence switching instruction is output when the conditions are met, and self-adaptive locking of the real adsorption capacity of the molecular sieve is achieved by recognizing the adsorption capacity saturation characteristics and decoupling gas source fluctuation.

The invention discloses a multilayer silent oxygen generator, which relates to the technical field of oxygen generation equipment, and comprises an oxygen generator body, a molecular tower oxygen filtering module arranged on the outer wall of the oxygen generator body, and a fault triggering mechanism connected with one end of the molecular tower oxygen filtering module and used for automatically triggering when the molecular tower oxygen filtering module is blocked, the multilayer silent oxygen generator further comprises a cleaning mechanism which is arranged on the outer wall of the molecular tower oxygen filtering module and used for cleaning after the fault triggering mechanism detects that the molecular tower oxygen filtering module is blocked. Through the fault triggering mechanism and the cleaning mechanism, the oxygen generator body can be automatically triggered under the condition that the filter screen is blocked and noise is generated when the oxygen generator body runs, and the filter screen can be cleaned under the condition that the oxygen generator is blocked and noise is generated by utilizing the switching of filter screen circulation; and the oxygen outlet stability of the equipment is ensured, and noise is reduced.

A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.

The utility model discloses medical molecular sieve oxygen generation equipment which comprises an equipment main body, a cover body detachably connected to the equipment main body, a gas inlet pipe, a gas outlet pipe, a compression part and a gas distribution disc, the lower end in the equipment main body is fixedly connected with a gas distribution disc; the gas inlet pipe extends into the lower end of the equipment main body and is communicated with the gas distribution disc; the compression part is detachably connected to the upper part of the cover body, and the lower half part is located in the internal space of the equipment main body; a molecular sieve is filled between the lower half part of the compression part and the gas distribution disc; a cavity is formed in the upper end in the equipment main body; and the air outlet pipe is communicated with the cavity. The device has the advantages that by arranging the compression part, high-pressure gas entering the device can be effectively and uniformly distributed, so that the gas is in full contact with the molecular sieve, and the concentration of prepared oxygen is more uniform; the compression part can ensure the compactness of the internal molecular sieve and prevent the preparation efficiency from being reduced due to gaps generated among the molecular sieves after wriggling.

The invention relates to a preparation method of a photocatalytic full-decomposition water film based on electrostatic spinning, and the preparation method comprises the following steps: S1, taking a carbon nitride precursor as a raw material, and carrying out secondary calcination to obtain an ultrathin g-C3N4 nanosheet; and carrying out electrostatic self-assembly on Co-coated BCN obtained by carrying out boron doping and cobalt compounding on the g-C3N4 and acidized Pt-coated CN obtained by carrying out platinum loading and acidizing treatment on the Co-coated BCN and the g-C3N4, so as to obtain the Co-coated BCN / Pt-coated CN photocatalyst. And S2, placing the Co-coated BCN / Pt-coated CN photocatalyst in an organic solvent, carrying out ultrasonic treatment, adding PAN, continuously carrying out ultrasonic treatment to obtain an electrostatic spinning solution, and carrying out an electrostatic spinning technology to obtain the photocatalytic full-decomposition water film. A carbon nitride precursor is used as a raw material, a carbon nitride-based photocatalyst Co (at) BCN / Pt (at) CN is obtained through modification means such as boron doping, cobalt compounding and platinum loading, the carbon nitride-based photocatalytic full-decomposition water film with high photocatalytic activity is prepared by combining an electrostatic spinning technology, and the carbon nitride-based photocatalytic full-decomposition water film can directly drive a water decomposition reaction under visible light to achieve efficient hydrogen production and oxygen production.

The invention relates to the technical field of oxygen production, and discloses an air suspension oil-free VPSA oxygen production system and method based on multi-dimensional closed-loop control, the system adopts a buffer-tank-free direct connection architecture, and a real-time surge margin is calculated through a sensing reconstruction module, and a power bypass module is driven to dynamically match fluid impedance to suppress surge. A thermal control buffer module is introduced, cooling adjustment is locked under the sensitive working condition through dynamic thermal interlocking logic, and temperature fluctuation is buffered and stabilized through thermal capacity. And the central decision-making module executes a density compensation and time sequence feedforward strategy, and preadjusts the torque of the compressor and the opening slope of the valve according to the air inlet density and the process time sequence. The closed-loop control logic based on the real-time surge margin and the change rate of the real-time surge margin is utilized, the high-speed unloading valve is driven to provide a discharge channel when the system impedance abnormally rises, and the hydrodynamic instability caused by process switching of the direct connection system and the equipment overload risk caused by environment load change are effectively restrained.