83 results about "Liquid oxygen" patented technology

The utility model relates to liquid hydrogen liquid oxygen spacer heat conductivity coefficient appearance, including base, side plate and top plate, be provided with the base on the base, be provided with a plurality of heat insulating plates fixedly on the base, the heat insulating plate is fixed with the heat conduction plate, the top of base is provided with the lifting plate, the top plate's upper end is fixed with the cylinder, the cylinder has the expansion joint, and the expansion joint is fixedly connected with the upper surface of lifting plate, the lower surface of lifting plate is fixed with a plurality of heating plates, and one side of heating plate away from heat conduction plate and one side of heat conduction plate away from heating plate all are provided with temperature sensor, and the side of base is fixed with the reference plate, and the upper end surface of reference plate and the upper end surface of heat conduction plate are located same horizontal plane, and the side of lifting plate is fixed with the mounting plate, and the mounting plate is fixed with laser range finder, and laser range finder has laser emission end, and laser emission end is towards reference plate, and laser emission end and the lower surface of heating plate are located same horizontal plane, the utility model discloses that the accuracy of detection result has been improved, and saves time and labour, and the efficiency is high.

The utility model relates to the technical field of liquid oxygen filling, and discloses a steel cylinder clamping device for low-temperature liquid oxygen filling, which is characterized in that a limiting mechanism consists of a first straight gear, a motor, a second straight gear, a rotating shaft, a third straight gear, a first bevel gear, a threaded rod, a second bevel gear, a threaded sleeve, a connecting rod and a clamping plate, the first straight gear is rotationally installed in the base, the motor is fixedly installed in the base, and the second straight gear is fixedly installed on an output shaft of the motor. According to the steel cylinder clamping device for low-temperature liquid oxygen filling, a motor is started to drive a second straight gear to rotate, under the action of a first straight gear and a third straight gear, a rotating shaft can rotate, under the action of a first bevel gear and a second bevel gear, a threaded rod can rotate, a threaded sleeve drives a connecting rod to move, and the connecting rod can rotate; and steel cylinders of different specifications can be clamped and fixed through the clamping plates, so that the steel cylinders are effectively prevented from sliding and shifting in the carrying or storing process.

The purpose of this invention is to propose an oxygen depressurization explosion-proof electrostatic vacuum noise silencing device, belonging to the field of safe handling of flammable and explosive industrial gases. The device includes a vertical cylindrical body, a bottom air inlet, a top exhaust outlet, supporting legs, and inside the cylinder, a bottom flame arrester, a multi-stage pressure reduction and deceleration assembly, an electrostatic elimination sound-absorbing layer, and a top flame arrester. Through multi-stage U-shaped microporous baffles, progressive pressure reduction and deceleration are achieved; the metal wire sound-absorbing layer eliminates static electricity and absorbs noise; and the upper and lower double-layer flame arresters block the backfire path, completely solving the problems of electrostatic explosion, backfire, and noise pollution during oxygen depressurization. This invention is suitable for high-risk scenarios such as liquid oxygen stations, ensuring the safe production of flammable and explosive chemical facilities, avoiding personal injury and property damage, while meeting environmental protection and noise reduction requirements.

This invention relates to the field of new energy and discloses a highly selective photocatalytic method for producing acetone from methane. The method includes: placing a transparent substrate coated with a photocatalyst in a photocatalytic reactor, adding liquid water, introducing methane gas to purge air, sealing the photocatalytic reactor, and conducting a gas-solid two-phase photocatalytic reaction under light irradiation and heating at 50-100°C to generate a liquid oxygen-containing organic compound, primarily acetone. The photocatalyst is BiVO4, ZnO, or a modified photocatalyst based on morphology control, surface modification, semiconductor composite, or elemental doping of BiVO4 or ZnO. This invention uses methane and water as raw materials, reacting with a photocatalyst in a gas-solid two-phase reaction to produce a liquid oxygen-containing organic compound, primarily acetone, with high acetone yield and selectivity. This invention has advantages such as low requirements for the reaction environment, simple and environmentally friendly process, and low cost.

A multiply redundant safety system that protects humans and assets while transfer(s) / fuelling of on road / off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles / vessels utilizing Compressed and or Liquefied Gas Fuels / compound(s). Utilizing Natural Gas Chemical Family of Hydrogen / Propane / ethane / ammonia / and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3) / ozone / hydrogen peroxide / peroxide / solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques / machine learning in combination with one or more sensors; in combination with one or more micro switches / actuator(s) combine to detect any leaks / fire(s) / or explosion hazards / vehicle motion / arc's, spark(s) / and other hazards for quickly mitigating / locking out / stopping fueling / gas / transfers / vehicle releasing system(s).

The application provides a lunar base power generation system based on a hydrogen-oxygen afterburning cycle and a use method thereof, and belongs to the technical field of lunar power generation. The problems of unstable photovoltaic power generation caused by low temperature during lunar night, low energy storage density, high maintenance cost and difficulty in meeting the demand for continuous and efficient energy supply of existing heat storage technology are solved. The power generation system comprises a cycle system, a hydrogen-oxygen combustion chamber, an electrolysis device, a liquid hydrogen tank, a liquid oxygen tank and a liquid water tank. The cycle system comprises a solar heat collector, a power generation turbine, a radiator and a gas compressor which are sequentially connected in a closed loop. A working medium circulates in the cycle system. The hydrogen-oxygen combustion chamber is connected between the solar heat collector and the power generation turbine. The power generation turbine is connected with the electrolysis device. The power generation system can provide three operation modes, namely, a lunar day power generation hydrogen-oxygen production mode, a lunar day afterburning efficiency increasing mode and a lunar night combustion power generation mode. The power generation system is mainly used for lunar base power generation.

This invention belongs to the technical field of energy storage systems. To further improve the efficiency and peak-shaving flexibility of energy storage systems, a liquefied air energy storage system coupling hydrate cooling, air separation, and liquefied natural gas is proposed. In the energy storage phase, the liquefied air energy storage system compresses and heats air. After expanding to atmospheric pressure, the liquefied air enters a gas-liquid separator. The separated gaseous air serves as return air to provide cooling energy, while the separated liquid air is stored in a liquefied air tank. The cooling energy for air cooling is provided by the return air, liquefied natural gas, and circulating hydrates. In the energy release phase, a portion of the liquid air in the liquefied air tank is pressurized and enters a distillation unit for air separation, producing liquid nitrogen and liquid oxygen. The remaining liquid air is used for power generation. The heating fluid is provided by circulating hydrates. This invention improves the system's economic efficiency and overall energy utilization efficiency.

The application belongs to the technical field of high-temperature wind tunnel combustion heater, and discloses an ignition starting device and method of high-total-temperature air liquid oxygen isobutane combustion heater. The ignition starting device comprises an isobutane supply system, an air supply system, a liquid oxygen supply system, an air-oxygen mixer, a combustion heater and key measurement points. The ignition starting method comprises a preparation stage, a combustion heater precooling stage and a combustion heater working stage. The ignition starting device and method of high-total-temperature air liquid oxygen isobutane combustion heater realize stable ignition starting and reliable thermal protection of the high-total-temperature working combustion heater by monitoring key point information in real time and designing valve opening sequence according to physical operation logic, and have engineering practical value.

This invention belongs to the field of high-temperature wind tunnel testing technology, and discloses a cylinder structure and control method for a valve actuator in a high-temperature wind tunnel liquid oxygen system. The cylinder structure of the valve actuator in the high-temperature wind tunnel liquid oxygen system employs a dual-cylinder structure that can be controlled independently to control the opening and closing of the valve. Through pressure feedback and a cylinder control system, downstream pressure feedback is applied to both cylinders. The control method of the cylinder structure of the valve actuator in the high-temperature wind tunnel liquid oxygen system controls the intake and exhaust modes of the upper and lower cylinders through downstream pressure feedback, enabling the valve actuator to operate with either a single or dual cylinder. This effectively reduces the stress on the sealing surface while meeting the sealing pressure requirements, thus meeting the usage requirements of valves in high-temperature wind tunnel liquid oxygen systems, extending valve service life, and possessing practical engineering value.

1. The name of the design product: liquid oxygen fracturing device. 2. The use of the design product: the design product is a device that realizes efficient crushing through the chemical reaction of liquid oxygen and fuel to produce high pressure shock wave, mainly applied to mine exploitation, building demolition, road and bridge construction and other engineering blasting operations. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The utility model discloses a high security liquid oxygen blasting device, including a plurality of liquid oxygen explosion pipe, each liquid oxygen explosion pipe all is installed with branch line, a plurality of branch line common installation has main line, the end of main line is installed with two plug -in post, one side of two plug -in post common is equipped with detonator, the top of detonator is installed with protective cover, be equipped with limiting mechanism on the protective cover, be equipped with four adjusting mechanism on the protective cover, the outer wall fixed connection of detonator has two C type handle that is symmetrically set, install rotary button on detonator, be equipped with two insertion slot on detonator, two plug -in post all cooperate with insertion slot. The utility model discloses through the setting of protective cover and its limiting mechanism, can reliably isolate sundries, greatly promote operation security, the adjusting mechanism on protective cover can adjust support leg height flexibly, make control equipment also can keep level on the uneven ground, be convenient for staff operation.

This invention discloses a liquid oxygen-nitrogen composite phase change rock-fracture device and method for use in cold-climate mines, relating to the field of mining and blasting engineering technology. It includes a first storage tube with a partition plate installed on its inner wall, and an energy storage tube located on one side of the partition plate on the inner wall of the first storage tube. This liquid oxygen-nitrogen composite phase change rock-fracture device and method for cold-climate mines effectively blocks heat conduction from the external cold environment to the energy storage tube by filling the hollow area with vacuum insulation material or maintaining a vacuum state, significantly reducing the evaporation loss of the liquid oxygen-nitrogen mixture. Simultaneously, by inserting one end of the input pipe into the bottom of the absorbent, and cooperating with the shut-off valve on the exhaust pipe, the mixture is allowed to permeate upwards from the bottom of the absorbent and completely expel air from the energy storage tube. This achieves the effect of maintaining the mixture in a liquid state for a long time in cold-climate environments, with no air residue after injection, and a stable and reliable phase change reaction.

This invention discloses a method for oxygen venting and recovery in an internal compression air separation unit, relating to the field of air separation. By automatically controlling and utilizing a backup liquid nitrogen pump, liquid nitrogen from a backup storage tank is returned to the process liquid nitrogen pump in the air separation unit. This reduces the flow rate setting of the original process liquid oxygen pump, thereby reducing the amount of oxygen vented from the cold box, recovering the cooling energy from liquid nitrogen vaporization and using it to increase liquid oxygen production, thus achieving a production conversion from liquid nitrogen to liquid oxygen. The method provided by this invention is simple to operate, has minimal impact on air separation distillation, significantly reduces oxygen venting, and effectively improves the unit's energy efficiency.

The application relates to a liquid oxygen phase change fracturing device and a rock drilling and blasting process, and relates to the technical field of blasting. The liquid oxygen phase change fracturing device comprises a vehicle body, a movable structure and a conversion structure. The movable structure is arranged on one side of the vehicle body and comprises a telescopic arm and a rotating base. One end of the telescopic arm is rotationally connected with the vehicle body, and the other end of the telescopic arm is rotationally connected with the rotating base. The conversion structure comprises a base, a conversion head and a first driving piece. The base is installed on the rotating base, the conversion head is rotationally connected with the base, and the conversion head is provided with a first mounting hole and a second mounting hole. A drill bit is arranged in the first mounting hole, and a fracturing pipe is arranged in the second mounting hole. The first driving piece is installed on the base and used for driving the drill bit or the fracturing pipe to move. The liquid oxygen phase change fracturing device is combined with drilling and explosion, and is used for tunneling in a mine, so that the tunneling efficiency is improved.

The utility model provides a kind of underwater liquid oxygen gas explosion fracturer, including fracturer, liquid injection pipe, exhaust pipe, electric ignition device and biomass fuel core body, fracturer is equipped with biomass fuel core body, the material of fracturer is high molecule, high density polyethylene and nylon 12 thermoplastic material, fracturer is equipped with two and above pipe cap, fracturer has waterproof seal, electric ignition device is equipped with electric ignition head and electric ignition lead, fracturer structure uses two pipe caps, wherein pipe cap and liquid injection hole correspond with fracturer, operability is extremely strong, the fracturer of welding seal assembly completion is safe and reliable, it is a kind of simple and easy to use, reliable and efficient, economic and applicable underwater liquid oxygen gas explosion fracturer.

The utility model discloses a kind of liquid oxygen preparation condensing evaporation devices, it relates to liquid oxygen preparation device technical field, the liquid oxygen preparation condensing evaporation device, including equipment shell, the inside fixed connection of equipment shell has fixed shell, the inside sliding connection of fixed shell has sliding frame, the surface fixed connection of sliding frame has handle, the inside of sliding frame is provided with filter screen, the inside fixed connection of sliding frame has thread sleeve, the inside of sliding frame is contacted with threaded rod, the inside of sliding frame is penetrated to threaded rod, the surface of threaded rod is connected with the inside screw thread of thread sleeve, the liquid oxygen preparation condensing evaporation device, by the setting of filter screen and sliding frame, the water extracted by water pump is filtered, to reduce the dust impurities contained in water sprayed by spray plate, to reduce the situation that the nozzle of spray plate is blocked, to avoid the influence caused by the cooling of condensing pipe.

The application discloses a modular device suitable for liquid oxygen phase change rock breaking and a use method. The device comprises a shape memory type hard plastic pipe, a double-layer flexible film assembly, an aluminum metal input pipe, a spiral copper wire, a bottom packaging cover, a top packaging cover, an axial gradient density cellulose roll paper and an annular differential time ignition assembly. The cellulose roll paper is distributed in a gradient distribution of lower density at the lower part and higher density at the upper part along the axial direction, and the annular differential time sequential ignition forms a "spiral rising type phase change wave chain reaction". An air heat insulation interlayer is arranged between the double-layer film to reduce liquid oxygen evaporation loss and form a secondary air cushion buffer layer. The shape memory type PVC hard pipe is radially self-contracted to form a self-adaptive explosion chamber under the initiation high temperature. The spiral copper wire wound outside the metal input pipe simultaneously realizes electrostatic conduction and redundant ignition when the ignition head fails. Through the synergistic effect of the multiple innovative features, the application realizes the space-time controllable release of the rock breaking energy, prolongs the pressure relief duration by 2-3 times, expands the breaking radius by about 25%, reduces the liquid oxygen evaporation loss to below 8%, and has outstanding substantial features and significant technical progress.

This invention provides a cryogenic medium storage container, in which an inner liner is spaced within an outer shell, forming a double-layer insulation structure and a thermal insulation barrier. A corrugated pipe serves as a channel connecting the inner liner. Compared to straight metal pipes used in related technologies, corrugated pipes have a smaller cross-sectional area and a longer thermal bridge path after axial extension, offering advantages such as a smaller thermal conductivity cross-sectional area and a longer thermal conductivity path, thus reducing heat leakage. Simultaneously, a support assembly's support kit, located radially outside the corrugated pipe, reinforces it and ensures stable installation of the inner liner. This design allows the support assembly to maintain its structural strength while effectively and stably installing the inner liner within the outer shell, while simultaneously improving its insulation performance. This reduces heat leakage and enables longer storage times for the medium, meeting the optimal insulation requirements and extended storage time of liquid oxygen cylinders.

The present invention aims to provide a nitrogen production technology that can generate a large amount of product nitrogen gas during normal operation while simultaneously producing a small amount of product oxygen gas or product liquid oxygen. When liquid nitrogen is required, the operating mode can be switched to allow for the simultaneous production or increase of liquid nitrogen without increasing power consumption while maintaining the amount of product nitrogen gas. [Solution] A nitrogen production method comprising a first separation step, a first condensation step, a second separation step, a second condensation step, an oxygen separation step, an oxygen evaporation step, a product nitrogen output step, a product liquefied nitrogen output step, and a product oxygen output step, wherein in the first operating mode, at least the oxygen separation step, the oxygen evaporation step, and the product oxygen output step are performed, and in the second operating mode, the oxygen separation step, the oxygen evaporation step, and the product oxygen output step are not performed.

This application belongs to the field of aerospace testing technology and discloses a steam supply system and steam supply method. The steam supply system includes a steam generator system, an alcohol supply system, a liquid oxygen supply system, a softened water supply system, and a control system. The steam generator system includes steam generator units arranged in parallel, each steam generator unit including three steam generators. Steam branch lines are equipped with steam regulating valves, and steam supply pipelines are connected to venting pipelines, which are equipped with steam venting valves. An alcohol main valve is provided between the alcohol supply system and each steam generator; a liquid oxygen main valve is provided between the liquid oxygen supply system and each steam generator; and a water main valve is provided between the softened water supply system and each steam generator. The adjustment method provided in this application is more flexible, enabling rapid and accurate changes in steam flow rate according to actual needs, and allowing for step-by-step adjustment of steam flow rate.

This utility model provides a portable liquid oxygen tank device, including a supporting base, multiple structural rods vertically arranged on the supporting base, a structural frame fixedly connected to the top of the multiple structural rods, and a flip door hinged to one of the structural rods. Multiple support rods extend downward from the bottom surface of the supporting base, and the support rods are distributed at least at the four corners of the supporting base. The supporting base is provided with non-collinear protrusions of no less than three on its surface. When the liquid oxygen tank is placed in the center of the supporting base, the liquid oxygen tank is restrained by the multiple protrusions, which improves the stability and safety of the liquid oxygen tank during movement, reduces the complexity of operation and the requirements for the site, and also reduces costs and safety hazards.

The utility model relates to a kind of hierarchical optimization formula cryogenic fractionation nitrogen-making equipment applied to nitrogen-making equipment field, including coarse separation tower, the upper end of coarse separation tower is equipped with condensing evaporator and four support legs, the upper end of four support legs is fixedly connected with fine separation tower in common, coarse separation tower and condensing evaporator are communicated, condensing evaporator and fine separation tower are fixedly connected with oxygen-rich pipe and liquid oxygen pipe, the right end of coarse separation tower is equipped with liquid pump, the upper and lower ends of liquid pump are fixedly connected with liquid air pipe, by being arranged between upper and lower tower condensing evaporator, reduce the floor area of this nitrogen-making equipment, and by condensing evaporator is used as the condenser of coarse separation tower and the reboiler of fine separation tower, reduce the energy consumption of equipment, when fractionating, gas passage forced gas rotation, force gas to separate under the action of centrifugal force, air inlet is not prone to block, and there is no elastic adjusting component, so that tower plate is not prone to jamming phenomenon when fractionating, effectively improve nitrogen fractionation effect.

The invention discloses a multi-energy complementary energy storage zero-carbon power generation system for a coal-fired power plant, which integrates electrolytic hydrogen production, oxygen energy storage, oxygen-enriched combustion and carbon capture and utilization processes, and comprises an electrolysis device for decomposing water by using electric energy to generate hydrogen and byproduct oxygen; the liquefaction storage unit is connected with the electrolysis device and is used for liquefying at least part of the byproduct oxygen and storing the liquefied byproduct oxygen as liquid oxygen; the expansion generator set is connected with the liquefaction storage unit and is used for pressurizing and gasifying the liquid oxygen and expanding to do work so as to generate power; the coal-fired boiler is connected with the expansion generator set, and is used for receiving the oxygen after expansion power generation as a combustion improver to carry out oxygen-enriched combustion with coal; and the carbon capturing and purifying device is connected with the coal-fired boiler and is used for treating high-concentration carbon dioxide flue gas generated by oxygen-enriched combustion to obtain liquid carbon dioxide.

The application discloses a liquid oxygen gasifier for cooling air conditioning water and relates to the technical field of liquid oxygen gasifiers.The liquid oxygen gasifier comprises a mounting top plate and a mounting bottom plate, a heat exchange pipe is arranged on the mounting top plate and the mounting bottom plate, and the heat exchange pipe is in a wave-shaped pipe body structure;heat exchange mechanisms are rotationally arranged on the heat exchange pipe at vertical pipes; and a driving mechanism for driving the heat exchange mechanisms to rotate is arranged on the mounting bottom plate.The first air cooling mechanism drives air to be vertically blown into the heat conduction fan wheel, so that the air is conveniently guided to pass through the heat conduction fan wheel and the heat exchange pipe along the height direction to exchange heat with the heat exchange pipe, then the second air cooling mechanism is started to drive air to be horizontally blown to the heat exchange pipe and the heat exchange mechanism, and the heat exchange efficiency of the heat exchange pipe and the heat exchange mechanism is further improved.The heat exchange mechanism is composed of multiple heat conduction fan wheels, so that the surface area of the heat exchange mechanism is increased, and the heat exchange efficiency is improved.

This invention provides a self-limiting multi-directional flexible compensation structure for double-walled pipes and its application. The self-limiting multi-directional flexible compensation structure for double-walled pipes includes: an inner pipe assembly, including a connected inner corrugated pipe and an inner intermediate pipe, with a displacement baffle on the outer wall of the inner intermediate pipe; and an outer pipe assembly, coaxially sleeved outside the inner pipe assembly, including a connected outer corrugated pipe and an outer intermediate pipe, with a limiting ring plate of thickness δ on the inner wall of the outer intermediate pipe; there are two displacement baffles located on both sides of the limiting ring plate, with a distance L between the two displacement baffles, where L = δ + 2X and X is 10–30 mm. This invention can effectively solve the problems of thermal expansion stress release and vibration absorption in double-walled pipes with limited space and dimensions, meeting the safety operation requirements of double-walled pipe systems in dual-fuel powered ships and the transportation of cryogenic media such as liquid hydrogen, liquid oxygen, and LNG.

A method for the liquefaction and densification of oxygen for use as a fuel in space vehicle launch applications that subcools and densifies a liquid oxygen stream to a temperature at or below 60 K using a liquid refrigerant that has an oxygen concentration in a range of 20% to 77% by mole fraction. The liquid refrigerant preferably comprises a mixture of liquid oxygen with liquid air or a mixture of liquid oxygen with liquid nitrogen with the liquid oxygen, liquid air, and / or liquid nitrogen sourced from a nearby air separation unit.

The application relates to a device for preparing ultrapure nitrogen gas by double-tower rectification while byproducting ultrapure oxygen, which comprises an air compression treatment system for air pretreatment, a purification system for nitrogen gas purification in air and a rectification cold box for nitrogen gas rectification, the air compression treatment system is connected with the purification system through a pipeline, the purification system is connected with the rectification cold box through a pipeline; the rectification cold box comprises a main heat exchanger, an ultrapure nitrogen gas preparation module for ultrapure nitrogen gas preparation and an ultrapure oxygen preparation module for byproducting ultrapure oxygen; the ultrapure oxygen preparation module comprises a methan removal tower for removing methane, a third condensation evaporator and an ultrapure oxygen tower. The application is specially provided with a unit for removing methane impurities, the purity of the produced nitrogen gas product can reach N level, the purity of the byproducted liquid oxygen product can reach N level, the purity is higher compared with the purity reached by a conventional air separation process, and the high-precision demand of the electronic special gas industry can be met.

This invention relates to the field of blasting devices, and discloses an explosion-proof device and method for using liquid oxygen gas to expand and fracture rocks. The device includes a liquid oxygen storage assembly, a control valve assembly on the side of which is connected to a liquid oxygen fracturing pipe assembly via a delivery assembly. The liquid oxygen fracturing pipe assembly is electrically connected to an initiator. The liquid oxygen storage assembly includes a liquid oxygen storage tank, the bottom of which is rotatably equipped with an insulating wheel. By optimizing key steps such as liquid oxygen storage, delivery, and phase change, the risks associated with electrostatic ignition devices are eliminated, as well as the risks associated with collecting the liquid oxygen in the blast zone after delivery, as in traditional technologies. This eliminates the safety hazards of existing liquid oxygen phase change expansion fracturing technologies and improves blasting effectiveness.