98 results about "Consumption oxygen" patented technology

A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, and an extended catalyzed layer between the cathode and the membrane, the extended catalyzed layer being adapted to consume oxygen and decompose hydrogen peroxide to produce water.

The invention discloses a whole-process autotrophic nitrogen removal method. The method mainly comprises the following steps: 1) inoculating anammox sludge into a reactor; 2) introducing nitrogen into the wastewater so as to reduce the DO (Dissolved Oxygen) concentration of wastewater to 0mg / L (milligram per liter) by filling nitrogen into the wastewater, and regulating the pH value of a water inflow barrel to reach 7 to 8; 3) gradually increasing the water inflow load by increasing the total nitrogen concentration of the wastewater and reducing the hydraulic retention time; 4) gradually increasing the DO concentration in the wastewater after a reaction is stable, thereby culturing bacteria capable of consuming oxygen in the reactor; 5) forming the oxygen-containing bacteria on the outer layer of the anammox sludge after performing the culturing acclimatization for half a month; 6) inoculating nitrosobacteria into the reactor and properly lowering the nitrate nitrogen concentration in the inflowing water while performing aeration to the reactor and controlling aeration quantity at the same time, thereby partially converting ammonia nitrogen entering the reactor into the nitrate nitrogen, i.e., the concentration (mg / L) ratio of the ammonia nitrogen to the nitrate nitrogen is 1:1 or so; regulating the pH value in the reactor to reach 7.5 to 7.7 by using a pH controller; 7) gradually increasing the water inflow load, thereby removing the nitrogen stably. The invention further discloses a device for realizing the whole-process autotrophic nitrogen removal method.

The invention relates to a method for monitoring and controlling the regeneration of a particle filter in an exhaust gas duct of an internal combustion engine, wherein said regeneration of the particle filter takes place by means of an oxidative burning off of particles during a regeneration phase. Provision is made according to the invention for the internal combustion engine to be operated at a lean operating point at least intermittently during lean operating phases or during a mixture oscillation and for the regeneration of the particle filter to be monitored during the lean operating phases or during the mixture oscillation via the temporal course of a second signal of a second lambda probe disposed in the exhaust gas direction downstream of said particle filter or of a second parameter derived therefrom in comparison to the temporal course of a first signal of a first lambda probe disposed in the exhaust gas direction upstream of said particle filter or of a first parameter derived therefrom. The invention also relates to a corresponding device. During the lean operating phases or the mixture oscillation, the first lambda probe disposed upstream of the particle filter emits a signal for a correspondingly lean lambda value. Oxygen is consumed from the exhaust gas by means of the oxidative burning off of particles in the particle filter. The oxygen concentration in the exhaust gas downstream of the particle filter is therefore lower than upstream of said particle filter. For that reason, the second lambda probe disposed downstream of said particle filter emits a signal for a richer lambda value in comparison to the first lambda probe during the lean operating phases or during the mixture oscillation. If the burn-off of particles has ended, the difference between the signals of the first and second lambda probe disappears.

The invention discloses a low-energy-consumption oxygen-enriched combustion system coupling solar energy and chemical looping air separation. The system comprises a dry steam preparing device, a chemical looping air separation device and an oxygen-enriched combustion device. The dry steam preparing device comprises a solar thermal collector, a steam generator and a distributor. Dry steam generated by the dry steam preparing device is divided into two parts by the distributor, one part of the dry steam enters the chemical looping air separation device to serve as the fluidization gas of an oxygen suction reactor, and the other part of the dry steam enters the oxygen-enriched combustion device. High-purity oxygen generated by the chemical looping air separation device enters the oxygen-enriched combustion device to be mixed with the dry steam and fuel for mixed combustion, and high-purity carbon dioxide is acquired by simply condensing and separating combustion products. The low-energy-consumption oxygen-enriched combustion system has the advantages that the dry steam prepared by solar energy can be used as the fluidization gas of the chemical looping air separation device and can also be fed into the oxygen-enriched combustion device to participate in combustion reaction, smoke recycling loops are reduced, energy consumption of the oxygen-enriched combustion system is lowered, and system efficiency is increased.

The invention relates to an anti-corrosion powder coating for an automobile, comprising the following constituents in parts by weight, 100 parts of epoxy resin, 15-35 parts of phenolic epoxy resin, 5-13 parts of polyethylene resin, 10-30 parts of calcium carbonate filler, 3-7 parts o dicyandiamide, 1-8 parts of zinc powder, 1-3 parts of organosilicone levelling agent and 0.1-1 part of oxidation catalyst, wherein platinum catalysts have the function of catalytic combustion and can be used for adsorbing oxygen or organic groups. During the static spraying of the powder coating aforementioned, a lot of oxygen mixed in the coating is consumed under the action of the catalyst. Oxygen forms hydroxyl groups, carbonyl groups or ketone groups after being consumed, so that the formed film has a great steric hindrance effect on the migration of oxygen. An anti-corrosion purpose is achieved by isolating oxygen from migrating to the surface of a metal material. The powder coating disclosed by the invention has a great anti-corrosion effect.

A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, and an extended catalyzed layer between the cathode and the membrane, the extended catalyzed layer being adapted to consume oxygen and decompose hydrogen peroxide to produce water.

The invention relates to an apparatus for environmental science research, in particular to a novel BOD (biochemical oxygen demand) determination system for continuous microorganism oxygen supply. The novel BOD determination system comprises a continuous oxygen supply unit, a measuring unit, a constant-temperature culture device, a magnetic stirring device and a software recording module for controlling the whole system. An operating principle of the novel BOD determination system includes that microorganisms are biodegraded in a reaction vessel under the normal pressure and at the constant temperature to consume oxygen to produce carbon dioxide, the carbon dioxide is absorbed by carbon dioxide absorbents on the upper portion of the reaction vessel, pressure in the reaction vessel is reduced so as to generate a pressure difference, a circuit in a U-shaped tube is connected to promote a constant-current power supply module to be turned on, a copper sulphate solution in an electrolysis vessel is subjected to electrolysis to produce oxygen, and a coulometer module starts to record electrolysis electric charge quantity; the oxygen is supplemented into the reaction vessel to enable the pressure difference of a U-shaped tube pressure meter to vanish, the circuit is disconnected, the constant-current power supply module is turned off, the electrolysis vessel stops electrolysis, and the coulometer module stops recording; the software recording module is controlled to process experimental data. The novel BOD determination system for continuous microorganism oxygen supply is capable of providing continuous oxygen supply and achieving precise temperature control.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing gas supply system which comprises a first gas supply subsystem and a second gas supply subsystem, the first gas supply subsystem comprises a first pipeline, a first check valve, a first reaction mechanism, a second reaction mechanism and a degassing structure, and the first reaction mechanism, the second reaction mechanism and the first pipeline are sequentially connected; a reactant is arranged in the first reaction mechanism, a catalyst is arranged in the second reaction mechanism, and the first check valve and the degassing structure are arranged on the first pipeline; the second gas supply subsystem is connected with the first pipeline; when the gas source is cut off, the reactant and the catalyst are subjected to chemical reaction in the second reaction mechanism to generate water vapor and oxygen, the degassing structure is used for consuming the oxygen and generating superheated steam, and the superheated steam enters the hydrostatic bearing. The air supply system for the hydrostatic bearing provides the pure water vapor working medium for the hydrostatic bearing, so that the normal operation of the hydrostatic bearing is ensured, and the hydrostatic bearing is prevented from being damaged.

The invention provides an oxygen-reducing fresh-keeping structure, a refrigerator, an oxygen-reducing fresh-keeping method and a storage medium. The oxygen-reducing fresh-keeping structure comprises an electrolysis device, a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is in communication with the electrolysis device, the electrolysis device comprises an electrolyticvessel, an electrolyte, an anode, a cathode and a power source, the electrolyte is contained in the electrolytic vessel for consuming oxygen, the anode and the cathode are immersed in the electrolyte, and the power source is arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is in communication with the drawer; one end of the first exhaust pipe is connected with the electrolytic vessel and is arranged close to the cathode, the other end of the first exhaust pipe is in communication withthe drawer, and an air pump is arranged on the first air inlet pipe and the first exhaust pipe. According to the oxygen-reducing fresh-keeping structure, the electrolyte is utilized to remove oxygen in the drawer, so that the oxygen in the drawer is rare, so that the physiological and biochemical process and the microbial activity caused by putrid deterioration of food material are inhibited, useroperation is not needed, the energy consumption is small, the cost is low, the noise is small, and convenience is brought to people.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing air supply system capable of improving transient bearing capacity, which comprises a first air supply subsystem and a second air supply subsystem, the first gas supply subsystem comprises a first pipeline, a first switch valve, a reaction mechanism and a degassing mechanism, reactants are arranged in the reaction mechanism, the reaction mechanism is communicated with the first end of the first pipeline, the second end of the first pipeline is used for being communicated with the hydrostatic bearing, and the first switch valve and the degassing mechanism are both arranged on the first pipeline; the degassing mechanism is positioned between the reaction mechanism and the first switch valve; the second air supply subsystem is used for communicating with the hydrostatic bearing through a first pipeline; the first switch valve is used for being opened under the condition that the hydrostatic bearing is impacted, so that water vapor in the hydrostatic bearing enters the reaction mechanism to be chemically reacted with reactants, and water vapor and oxygen are generated; the degassing mechanism is used for consuming oxygen and generating superheated steam. Normal operation of the hydrostatic bearing can be guaranteed, and the hydrostatic bearing is prevented from being damaged due to rotor collision.

The invention discloses a cephalopod spawning and inhabiting device. The cephalopod spawning and inhabiting device can adapt to the characteristic that cephalopods like to spawn on attachments close to the seabed during spawning, and can effectively solve the problems that the hatching rate is reduced due to the fact that the area close to the seabed consumes oxygen due to rotten substances at the water bottom, the water flow is less, the oxygen content is low, and incubation of fertilized ova which are greatly attached together is not facilitated. The cephalopod spawning and inhabiting device comprises an inhabiting net cage, a partition plate is arranged in the middle of the inhabiting net cage, and the partition plate divides an inner cavity of the inhabiting net cage into a spawning and inhabiting cavity located below the partition plate and an incubation cavity located above the partition plate. A plurality of access channels are arranged on the side wall of the spawning inhabiting cavity; and a plurality of egg attaching devices are arranged on the inhabiting net cage, and each egg attaching device comprises a buoyancy block and an egg attaching rope located in the spawning and inhabiting cavity.

The invention provides a battery cathode catalyst. The battery cathode catalyst comprises porous cerium dioxide microspheres and silver powder, wherein the silver powder is dispersed in the cerium dioxide microspheres and on the surfaces of the cerium dioxide microspheres. In the battery cathode catalyst provided by the invention, the porous cerium dioxide microsphere is used as a stable silver carrier, the battery cathode catalyst has relatively large specific area, nanometer silver particles can be prevented from being agglomerated during the sintering and test process, so that the catalyst is maintained with relatively high catalytic activity; and moreover, cerium dioxide has favorable oxidization-reduction characteristic, oxygen can be consumed in an oxidization atmosphere and is provided in a reduction atmosphere, so that the oxygen is rapidly transferred to a three-phase interface in the cerium oxide, the oxygen migration rate is improved, and the energy efficiency of a battery is improved.

The invention discloses an oxygen-bearing coal-bed gas low-temperature concentration method and a device for implementing the method. The method comprises the following steps: conducting pressurization and purification on oxygen-bearing coal-bed gas; cooling the purified oxygen-bearing coal-bed gas; conducting gas-liquid separation on the cooled oxygen-bearing coal-bed gas; respectively throttling the gas and liquid obtained from gas-liquid separation to obtain a throttling liquid phase and a throttling gas phase; introducing the obtained throttling liquid phase and throttling gas phase into the purified oxygen-bearing coal-bed gas through heat-exchange cooling, so that the concentrated oxygen-bearing coal-bed gas is obtained when the throttling liquid phase is subjected to heat exchange. According to the method, the main cold energy is provided through oxygen-bearing coal-bed throttling and cooling, no or only a little of cold energy provided by an external refrigeration system is needed, and the energy consumption is low, so that the method is a simple, feasible and low-energy-consumption oxygen-bearing coal-bed gas treatment method; furthermore, through adoption of the device provided by the invention, low-temperature concentration of the oxygen-bearing coal-bed gas can be realized; the quantity of components in the device is small, and thus the adaptability is high.

The invention relates to the technical field of coal-fired flue gas treatment, particularly to a coal-fired flue gas treatment composition, a coal-fired flue gas treatment method, a coal-fired flue gas treatment apparatus, and applications of the composition, the method and the apparatus. The coal-fired flue gas treatment composition comprises a dicarbonic acid solution, a nitrogen copper solution and a sodium chloride solution, wherein the dicarbonic acid solution comprises sodium bicarbonate, sodium carbonate and a solvent, the nitrogen copper solution comprises a mother liquor and a seed liquid, the mother liquor is prepared from heat treated copper and a urea solution, and the seed liquid is a urea solution. According to the present invention, the coal-fired flue gas is treated by using the nitrogen copper solution as the catalyst to convert the traditional oxygen-consuming flue gas treatment mode into the oxygen release mode, such that the oxygen content in the flue gas is substantially recovered to the level of the air so as to achieve the harmless treatment of the flue gas; and with the coal-fired flue gas treatment composition, the NOx content in the coal-fired flue gas can be reduced to within 10 mg / m<3> so as to improve the degradation level of nitrogen oxides to a completely-new level.

The utility model provides an electrochemical oxygen reduction device which comprises an oxygen reduction assembly, a first electrode assembly and a second electrode assembly. A cathode plate opposite to the anode plate; a membrane module comprising: a first membrane; an anode catalyst layer provided between the first membrane and the anode plate; and a cathode catalyst layer disposed between the first membrane and the cathode plate; wherein the oxygen reduction assembly is configured to generate an electrochemical reaction which consumes water and generates hydrogen ions at the anode catalyst layer and generate an electrochemical reaction which consumes oxygen and generates water at the cathode catalyst layer under the condition that direct current is applied to the anode plate and the cathode plate, and the electrochemical oxygen reduction device further comprises a second membrane, and a second membrane configured to allow moisture to pass through the second membrane and be delivered to the anode catalyst layer, but not allow oxygen to pass through the second membrane, where the second membrane is integrally formed with the first membrane. The utility model further provides a storage box comprising the electrochemical oxygen reduction device. The overall structure can be simplified, and manufacturing, installation and maintenance are convenient.

The invention relates to the field of rescue equipment, and discloses portable self-rescue equipment. The portable self-rescue equipment comprises a sleeve, a cavity is formed in the sleeve, a center rod is slidably arranged in the cavity, ejection assemblies are symmetrically arranged on the two sides of the lower end in the center rod, and the ejection assemblies can position and lock the sleeve and the center rod. Locking assemblies are symmetrically arranged on the two sides of the upper end in the center rod. According to the portable self-rescue equipment, the center rod and a baffle can be unlocked through a method of cutting a pull rope, then the center rod is ejected upwards to enter a snow layer or sand, surrounding obstacles are detected through the baffle, a fan is driven to rotate through the pull rope, and trapped people can be helped to conduct air interaction; and meanwhile, the sleeve is small in size and can be carried about, during use, a trapped person does not need to operate too much, oxygen consumption caused by activities is avoided, even a person is trapped in fluid and can directly breathe through a hose, and the survival rate is increased.

The invention relates to a smelting furnace and a smelting method for extracting valuable metals from laterite-nickel ore. The smelting furnace comprises a furnace body with a furnace chamber, the furnace body is sequentially divided into a hearth section, a furnace body section and a furnace top section from bottom to top; the bottom side of the hearth section is in communication with an electricheating fore well, the electric heating fore well is provided with a deslagging port and a siphon port, the position of the inner end of the siphon port is lower than the position of the inner end ofthe deslagging port, and the bottom area of an inner cavity of the electric heating fore well is 1 / 2-3 / 2 of the bottom area of an inner cavity of the hearth section; the inner bottom face of the hearth section inclines in the direction where the electric heating fore well is located, and the included angle between the inner bottom face of the hearth section and the horizontal plane is 5degrees-20degrees. After the laterite-nickel ore, the additive, the flux and the like are mixed, the mixture can be directly smelted in a smelting furnace, pelletizing treatment is not needed, and the smeltingprocess is simplified. The smelting furnace can be used for carrying out direct, efficient and low-energy-consumption oxygen-enriched smelting on the low-grade laterite-nickel ore to generate nickelmatte, nickel matte and the like with economic values.

The invention discloses a green formic acid co-production method based on electro-catalysis synergistic conversion of carbon dioxide and carbon-containing small molecules, and belongs to the technical field of new energy conversion and carbon resource utilization. According to the method, a paired electro-catalysis system is constructed; an iron / cobalt bimetal organic framework catalyst is adopted as an anode, so that high-selectivity electro-oxidation of ethylene glycol is realized to generate formic acid; a bismuth-based metal organic framework catalyst is adopted as a cathode, efficient electroreduction of carbon dioxide is achieved, formic acid is also generated, and therefore a high-added-value product is co-produced in a single system in a synergetic mode. Compared with a traditional electrolyzed water system, the method has the advantages that carbon-containing small molecules are used for replacing high-energy-consumption oxygen evolution reaction (OER), the electrolysis energy consumption is remarkably reduced, and meanwhile, the Faraday efficiency and the product selectivity are improved. According to the technical path, capture and resource conversion of CO2 are achieved, high-value utilization of typical carbon-containing organic waste liquid is promoted, and a sustainable, economical and efficient solution is provided for renewable energy-driven green chemical industry, carbon neutralization and clean energy development.

The invention discloses a multi-organ chip, which comprises a chip substrate and a chip cover plate attached to the chip substrate, at least two cell culture chambers are formed on the chip substrate, and the at least two cell culture chambers are respectively used for culturing different types of cells to simulate different organs; at least one cell culture chamber is provided with a microalgae culture chamber, and the microalgae culture chamber is formed on the chip substrate and is used for culturing microalgae to generate or consume oxygen; the cell culture chambers are communicated with the corresponding microalgae culture chambers, and gas exchange is allowed; the oxygen concentration in each cell culture chamber is independently controlled by adjusting the intensity of photosynthesis or respiration of microalgae in different microalgae culture chambers. According to the multi-organ chip, oxygen control of different organ areas on the chip is achieved, and the problem that an existing method is not suitable for oxygen content control on the multi-organ chip is solved.

A fuel cell system having a fuel cell with an anode and a cathode wherein both the cathode and anode each have a flow path with an inflow and outflow. A gaseous source containing oxygen is connected to the inflow of the cathode flow path while a gaseous fuel source is connected to the inflow of the anode flow path. Upon shutdown of the fuel cell, a control system reduces the stoichiometric ratio at the anode to less than or equal to one to thereby deplete the oxygen from the gas at the cathode. A normally closed valve is fluidly connected between the cathode outflow and the anode inflow. The control system opens the valve upon shutdown of the fuel cell to thereby purge the fuel from the anode flow path with the oxygen depleted outflow from the cathode flow path.

The invention provides a chemical-looping continuous oxygen production system based on solar photothermal, and belongs to the technical field of chemical-looping oxygen production of solar heat storage and heat accumulation. The system comprises a Fresnel lens field, a heat storage device, a side steel plate, an end steel plate, a columnar glass body, a lifting gate, a premixer, a fan, an air preheater, a reheater, a condenser, a superheater, an evaporator and an oxygen production device. The chemical-looping oxygen generation system is coupled with the solar photo-thermal heat storage system,hot air absorbs solar photo-thermal and then generates steam and performs oxygen absorption and desorption reaction, and then high-temperature oxygen-poor air generated by the reaction preheats coldair. Superheated steam and oxygen mixed gas obtained after the oxygen release reaction is subjected to condensation treatment after air is subjected to secondary heating to obtain pure oxygen, and preheated air enters a heat storage device to be subjected to convective heat exchange to form high-temperature air to continue to participate in the circulation. The whole system realizes gradient utilization of energy, achieves the purpose of low-energy-consumption oxygen production, and conforms to the modern theme of energy conservation and emission reduction.

The invention relates to the technical field of sewage treatment. The invention discloses an anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system and a domestication method thereof, which are characterized in that three autotrophic microorganisms with different oxygen requirements are sequentially domesticated by a biological filler according to a sequence of an inner layer, a middle layer and an outer layer to form dissolved oxygen gradient region change. Wherein the microalgae form an oxygen production area in the outer photosynthesis, and the dissolved oxygen concentration in the area is the highest. Short-cut nitrifying bacteria domesticated on the middle-layer biological filler consume oxygen, and the concentration of dissolved oxygen is lower than that of dissolved oxygen in the outer-layer biological filler area. The dissolved oxygen in the inner-layer biological filler area can reach the lowest level, so that the anaerobic ammonium oxidation bacteria can survive suitably, and the stable denitrification of anaerobic ammonium oxidation is ensured. Therefore, the biological membrane obtained by the domestication method provided by the invention is more stable, the mass transfer of the dissolved oxygen is more uniform than that of the traditional mechanical point source aeration, and the influence of the dissolved oxygen on the interior is smaller, so that the treatment effect is more stable. The anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system does not need aeration, does not need additional organic carbon sources, can absorb CO2 to realize negative emission, is energy-saving and efficient, meets the requirements of dual carbon and green water plant transformation in China, and has important utilization value.

The invention relates to an adjustable moxa fumigating device for clinical nursing of the endocrinology department, The device effectively solves the problems that when an existing moxa fumigating device is used for fumigating, a moxa cone needs to be ignited manually and needs to be replaced and fixed manually, the steps are tedious, heat in a fumigating chamber is wasted, heat in a fumigating chamber is wasted, and the best fumigation effect cannot be achieved; and oxygen needs to be consumed when the moxa cone is combusted in a closed space, if the moxa cone cannot obtain enough oxygen during combustion, heat in the fumigation chamber is insufficient, or toxic substances are generated to harm human health due to insufficient combustion of the moxa cone. The moxa fumigating device is provided with a bed body and the fumigating chamber and can conduct reciprocating fumigating action, an automatic feeding device, an automatic clamping device and an adjustable air inlet device are arranged in the fumigating chamber, and the position and angle of an air inlet of the air inlet device are adjusted along with gravity change of moxa cone combustion.

The invention belongs to the technical field of converter smelting, and particularly relates to a method for reducing converter smelting cost, which comprises the following steps: adding a steel bar cropping bin on a furnace front platform, adding a vibrating screen at the lower end of the steel bar cropping bin, and adding steel bar cropping into the steel bar cropping bin by using a waste steel hopper; picking the cold hopper by using a forklift, putting the cold hopper below a vibrating screen of the steel bar cutting head bin, and starting the vibrating screen to vibrate the steel bar cutting head into the cold hopper; the steel bar cutting head is conveyed to a cold material adding opening of an argon blowing station through a forklift; after molten steel enters an argon station for temperature measurement and sampling, if the steel ladle clearance is larger than 500 mm and the temperature is larger than 1560 DEG C, the number of added steel bar cutting heads is determined according to the temperature condition. The added steel bar cutting head is directly changed into molten steel after being completely melted, materials such as oxygen, lime and dolomite do not need to be consumed, the yield is increased, the temperature of the molten steel is reduced, the refining temperature of the molten steel is stabilized within the range of 1525-1540 DEG C, temperature waste is avoided, and meanwhile stable operation of a refining furnace is facilitated.

The invention relates to the technical field of bearings, and provides a hydrostatic bearing gas supply system capable of continuously supplying gas, the hydrostatic bearing gas supply system comprises a first gas supply subsystem and a second gas supply subsystem, the first gas supply subsystem comprises a first pipeline, a first valve, a first reaction mechanism, a second reaction mechanism and a degassing structure, the first reaction mechanism is internally provided with a reactant, and the second reaction mechanism is internally provided with a second pipeline; the first valve and the degassing structure are arranged on the first pipeline; the second gas supply subsystem is connected with the first gas supply subsystem; the first valve is used for being opened when the second gas supply subsystem breaks down, reactants in the first reaction mechanism enter the second reaction mechanism to be subjected to chemical reaction, water vapor and oxygen are generated, and the degassing structure is used for consuming oxygen and generating superheated steam. According to the hydrostatic bearing gas supply system capable of continuously supplying gas, high-temperature and high-pressure water vapor and oxygen are generated through chemical reaction, the oxygen is consumed through the degassing structure, a pure water vapor working medium is provided for the hydrostatic bearing, and normal operation of the hydrostatic bearing is guaranteed.

The utility model relates to the field of switch cabinets, and discloses a high-low voltage switch cabinet with an explosion-proof function, which comprises a gas tank, the gas tank is fixed on the top surface of a switch cabinet shell, one side of the gas tank is provided with a mounting hole, an output pipe is fixed in the mounting hole, an electric valve is arranged on the output pipe, and the electric valve is connected with the gas tank. A threaded hole is formed in the top surface of the gas tank, a sealing plug is rotationally arranged in the threaded hole, an elastic ring is fixed to the surface of the sealing plug, the surface of the elastic ring is in interference fit with the inner wall surface of the threaded hole, a fixing hole is formed in the top surface of the switch cabinet shell, and the other end of the output pipe is fixed to the inner wall surface of the fixing hole. According to the high-low voltage switch cabinet, oxygen needs to be consumed during flame combustion, so that the carbon dioxide filled in the switch cabinet shell can restrain the flame combustion and even extinguish the flame, further spreading of possible combustion or explosion is prevented, and the safety of the high-low voltage switch cabinet during use is improved.

The utility model discloses a liftable aeration system for an oxidation ditch. The liftable aeration system comprises a bottom plate, an outer ditch and an inner ditch, a positioning frame is arranged at the top of the bottom plate, and an anoxic zone is formed in the positioning frame; the outer groove is formed in one side of the positioning frame, and a middle groove is formed in one side of the outer groove; the inner ditch is formed in one side of the outer ditch; according to the utility model, gas flows to the inside of the aeration pipe from the inside of the square head and the joint, and the gas is sprayed out from the surface of the aeration pipe to the inside of the outer ditch and the inside of the inner ditch, so that the aeration inside the outer ditch and the inner ditch is improved; the sealing ring is arranged between the joint and the square head to seal gas, so that the gas is prevented from flowing out from a gap between the joint and the square head; the aeration pipes are arranged in the outer ditch and the inner ditch, gas enters the aeration pipes through the gas inlet pipes, the gas is sprayed out from the interiors of the aeration pipes, aeration is increased, the oxidation rate is increased, the content of dissolved oxygen in water can be increased through aeration, and oxygen needs to be consumed when microorganisms degrade pollutants.

The invention discloses a barrier alloy process method, which comprises the following steps of: providing a to-be-processed wafer; introducing nitrogen into the reaction furnace and setting a constant-temperature area of the reaction furnace to be at a first temperature; conveying the to-be-processed wafer from a furnace tube opening of the reaction furnace to a constant temperature area of the reaction furnace at a first temperature, wherein the surface of the to-be-processed wafer and air are subjected to an oxidation reaction in the conveying process to form a micro-oxidation protection layer; and a barrier alloy reaction is carried out in a constant-temperature area of the reaction furnace at the alloy temperature and under the nitrogen atmosphere. An oxygen inlet pipeline does not need to be specially arranged for supplying oxygen to the reaction furnace, and the surface of the to-be-processed wafer and air are subjected to oxidation reaction in the conveying process to form a micro-oxidation protection layer. According to the barrier alloy process method, the barrier alloy process can be carried out without specially producing a reaction furnace or additionally arranging an oxygen pipeline on the reaction furnace, the barrier alloy process method is suitable for more types of reaction furnaces, and the process cost is reduced; moreover, in the barrier alloy process, an oxygen inlet pipeline does not need to be arranged for supplying oxygen to the reaction furnace, oxygen consumption is not needed, and the process cost is further reduced.

A coal spontaneous combustion tendency identification device based on low-temperature oxidation oxygen consumption, which consists of a constant temperature control box (1), an oxygen concentration tester (2), an oxygen consumption test container (3) and a gas outlet pipe (5). The oxygen test container (3) is a quartz glass spherical cavity with a flat bottom and a long bottleneck, the spherical cavity of the oxygen consumption test container (3) is located in the constant temperature control box (1), and the upper part of the long bottleneck extends out of the constant temperature control box (1) and sealed by the piston type sealing plug (4), one end of the gas outlet pipe (5) passes through the piston type sealing plug (4) and stretches into the oxygen consumption test container (3), and the other end is connected with the oxygen concentration tester (2) are connected, and the air valve switch (6) is connected in series on the gas outlet pipe (5). The invention makes the coal spontaneous combustion tendency identification method more scientific and reasonable, and the identification process truly reflects the low-temperature oxidation characteristics of the coal, so the identification result is accurate and reliable.

The present invention relates to an automatic salvaging device for floating film on the surface of water in shrimp sheds. Floating film generally refers to the organic layer floating on the water surface during aquaculture, which will hinder the oxygen exchange between water and air, consume oxygen, produce harmful substances, and increase the risk of aquaculture. Due to the uncertainty and persistence of the appearance of floating film, as well as the hysteresis of its harmful effects, the industry generally ignores the treatment of floating film, and there is currently no cheap, environmentally friendly, and labor-saving floating film removal device in the industry. The present invention adopts physical salvage methods, air lift principles, and automatic steering technology to continuously and automatically salvage and separate floating film on the water surface. In conjunction with the use of barriers, the efficiency of floating film salvage can also be greatly improved, enhancing the practicability of the device. The device provides a new method for salvaging and separating floating film in aquaculture.