11results about How to "Reduce oxygen concentration" patented technology

This invention discloses a low-temperature carbon dioxide high-expansion foam dust suppression system and method for ore pass unloading. The dust suppression system includes a first high-expansion foam generator and a second high-expansion foam generator at the ore pass unloading port and ore bin, respectively. A foaming dust suppressant is mixed with inert carbon dioxide gas and a sulfide ore inhibitor to create foam with both dust suppression and ore spontaneous combustion inhibition properties. Because the foam contains an ore inhibitor, the spontaneous combustion tendency of ore dust upon contact with the foam is effectively reduced. Simultaneously, after the foam bursts, the low-temperature carbon dioxide gas within it lowers the ambient temperature and oxygen concentration within the ore pass, creating a low-temperature, low-oxygen environment and reducing the risk of ore spontaneous combustion and agglomeration within the ore pass. Furthermore, the low-temperature carbon dioxide generates natural convection, inducing airflow within the ore pass and accelerating foam diffusion. Therefore, this invention's low-temperature carbon dioxide high-expansion foam dust suppression system achieves synergistic prevention and control of dust and ore spontaneous combustion within the ore pass.

This invention relates to a hyperbaric oxygen chamber system with adjustable oxygen concentration. The system includes a main unit and a chamber. The main unit comprises a main control module, an oxygen regulation module, and a pressure regulation module, all electrically connected to the main control module. The pressure regulation module includes a low-oxygen air regulation submodule and a pressure-maintaining air submodule. The pressure-maintaining air submodule includes a first air compressor, a pressure relief valve, and a first sensor. The oxygen regulation module includes a second air compressor, a separation valve, a molecular sieve tower, a flow-limiting valve, and a vacuum pump. The low-oxygen air regulation submodule includes a three-way valve and a one-way valve. This invention's adjustable oxygen concentration hyperbaric oxygen chamber system can reduce the production cost of hyperbaric oxygen chamber systems, improve the user experience, and allow the oxygen concentration within the chamber to be adjusted below that of air, thus expanding its application to low-oxygen training and testing environments.

The application discloses a storage cabinet and an energy storage device, and relates to the technical field of fire fighting, wherein the storage cabinet comprises a cabinet body and at least one shell assembly, at least one first cavity is arranged in the cabinet body; the shell assembly is arranged in the first cavity, and the inside of the shell assembly is provided with a second cavity for mounting a battery structure; the first end of a first gas flow channel of the shell assembly is communicated with the first cavity, and the second end of the first gas flow channel is communicated with the outside of the cabinet body; a rotatable baffle structure is arranged in the first gas flow channel, and the baffle structure is used for shielding the first gas flow channel; the third end of a second gas flow channel is communicated with the first cavity, and the fourth end of the second gas flow channel is communicated with the inside of the shell assembly; the outer surface of a plugging piece is abutted against the inner wall surface of the second gas flow channel; the battery structure presses the first elastic piece to move the plugging piece towards the second end of the second gas flow channel and form a gap. The technical scheme provided by the application controls the oxygen concentration in the first cavity, so that the fire extinguishing efficiency is improved.

The present application belongs to the technical field of electrochemical gas separation and purification, and particularly relates to a flat-plate solid oxide oxygen ion conductor membrane reactor, a preparation method and application, and is particularly suitable for removing trace oxygen impurities; the solid oxide oxygen ion conductor membrane reactor adopts LSGM electrolyte, and composite material BSCF-SDC is used as the cathode and the anode; the membrane reactor can realize high removal of trace oxygen in argon under the condition of 750-900 DEG C and 1-2.0 V, so that the oxygen content can be lower than 10 ppm; the membrane reactor has the advantages of low energy consumption, high stability, no secondary pollution and the like, and is suitable for preparation of high-purity argon in the fields of semiconductor manufacturing, metal smelting and the like.

The application relates to the field of outdoor communication cabinets, and discloses a high-strength explosion-proof outdoor communication cabinet which comprises a protection mechanism and an explosion-proof mechanism, the explosion-proof mechanism is fixedly installed in the interior of the protection mechanism, the interior of the explosion-proof mechanism is provided with a transmission part, one side of the transmission part is slidably provided with a second communicating part, the other side of the transmission part is slidably provided with a first communicating part, the top center of the transmission part is fixedly provided with an adjusting part, the interior of the adjusting part is provided with a positioning support, the interior center of the positioning support is fixedly provided with a driving motor, the bottom center of the driving motor is fixedly connected with a threaded rod, the explosion-proof mechanism is installed in the interior of the protection mechanism, the oxygen concentration in the interior of the communication cabinet can be quickly reduced, the communication cabinet can be protected from power-off, and explosion accidents of the communication cabinet can be avoided.

The utility model belongs to high flame -retardant cable technical field, concretely is a kind of high flame -retardant cable with chlorinated polyethylene outer sheath, including filler layer, the inside fixedly connected with wire core of filler layer, the outside fixedly connected with impact resistance layer of filler layer, the outside fixedly connected with temperature insulation layer of impact resistance layer, the outside fixedly connected with tensile layer of temperature insulation layer, the outside fixedly connected with outer sheath of tensile layer.The utility model is provided with impact resistance layer, it is favorable to improve the impact resistance of cable, when cable is impacted, outer cover can extrude bellows, by extrusion, bellows is shrunk, when shrinking, the gas in bellows is extruded, the gas is extruded and generates reverse force, to prevent external force continue to intrude into the inside of cable, ensure cable inside intact, prolong the service life of cable.

The utility model relates to rare earth hydrogen storage alloy or quick -setting neodymium iron boron alloy smelting auxiliary equipment technical field, specific, relate to a kind of rare earth metal powder explosion -proof dust collecting device, including shell, filter bag chamber, backflush mechanism, dust-containing gas inlet, purified gas outlet, still include inert gas supply gas path, explosion suppressor, explosion vent. Nitrogen gas path is introduced on the one hand reduces the oxygen content in dust collecting device, makes oxygen concentration reduce, reduces the oxidation reaction of rare earth metal, reduces the generation of heat. On the other hand, nitrogen in nitrogen gas path low pressure gas path is obtained by high-pressure liquid nitrogen throttling pressure reduction, temperature is lower, it is favorable to reduce the temperature in dust collecting device. The introduction of nitrogen gas path greatly reduces the explosion risk, this is the conventional working process. By introducing explosion suppressor, explosion vent, cooling can be carried out when temperature is too high and pressure relief after explosion, to slow down the progress of explosion and protect the entire device after explosion.

The utility model discloses a kind of high-temperature-resistant anticorrosive boiler equipment, specifically related to boiler equipment technical field, including combustion furnace, combustion furnace inside is equipped with grate, combustion furnace inside is equipped with furnace body, combustion furnace inside and grate outside are all provided with high-temperature-resistant layer, high-temperature-resistant layer outside is equipped with anticorrosive layer, the material of high-temperature-resistant layer is organic silicon high-temperature-resistant paint, the material of anticorrosive layer is epoxy coal-tar pitch paint, combustion furnace outside is equipped with connecting assembly and recovery mechanism, recovery mechanism is installed in connecting assembly one side;Connecting assembly includes first flange, first flange is fixedly connected with the top end of combustion furnace.The utility model is equipped with connecting assembly and recovery mechanism, can quickly install and disassemble furnace cover, installation and disassembly can be completed without using complex tool, reduce operation difficulty, while can be re-delivered to combustion furnace inside with flue gas and burn, reduce the oxygen concentration and temperature of combustion area, can improve combustion condition.

This utility model discloses a nitrogen circulation structure for a recycling device, belonging to the technical field of recycling equipment, and solves the problem of fire hazards in existing recycling equipment. It includes a gas supply pipe and a circulation pipe connected to the discharge pipe of a shredder. The gas supply pipe is connected to a nitrogen tank via an electromagnetic inlet valve, and the circulation pipe is connected to an exhaust pipe and a negative pressure pipe. An electromagnetic exhaust valve is installed on the exhaust pipe, and the negative pressure pipe is connected to the discharge pipe of a crusher via a one-way valve. This utility model reduces the oxygen concentration in the shredder and crusher by introducing nitrogen into the discharge pipe of the shredder, thereby significantly reducing the fire risk. Furthermore, to reduce nitrogen consumption and control costs, the nitrogen entering the discharge pipe of the shredder is recovered from the crusher discharge pipe to the circulation pipe via the negative pressure pipe and then re-enters the shredder discharge pipe.