18 results about "Solid oxygen" patented technology

The present invention discloses a numerical simulation method for solid-state oxygen control and mass transfer of liquid lead-bismuth, which can be used for numerical simulation research on the oxygen dissolution and diffusion characteristics of solid lead oxide particles in a mass exchanger during solid-state oxygen control of liquid lead-bismuth. By studying the oxygen supply characteristics of a randomly stacked pebble bed composed of solid lead oxide particles in a mass exchanger, the lead oxide pebble bed is simplified into a homogeneous porous medium, and a porous medium component transport model can be used to complete the numerical simulation of solid-state oxygen control. The present invention avoids the modeling difficulties of simplifying point contacts between lead oxide particles in current public literature, has the characteristics of low computing resource usage and high result reliability, and can be used for preliminary research on solid-state oxygen control experiments of liquid lead-bismuth, which is beneficial for guiding the design of solid-state oxygen control equipment in lead-bismuth piles of fourth-generation reactors.

This invention discloses a lead-based fast reactor control technology for nuclear power plants, specifically a electrically powered solid oxygen control and regulation system for a lead-based fast reactor, comprising: a liquid lead-bismuth flow pipeline, a solid oxygen source replenishment device, and a liquid level control system. The liquid lead-bismuth flow pipeline includes: a loop inflow pipeline, a loop pipeline expansion bend, a vertical pipeline dissolution chamber, a loop outflow pipeline, a charging tank isolation chamber, and an electric valve. The solid oxygen source replenishment device includes: a motor, a fixed flange, a screw sleeve, a threaded connection structure, a screw, ribs, an upper orifice plate of the charging tank, a charging tank, a lower orifice plate of the charging tank, a locking hole on the upper orifice plate of the charging tank, alumina spheres, lead oxide ceramic spheres, and a charging tank isolation chamber. The liquid lead-bismuth in the liquid lead-bismuth flow pipeline sequentially passes through the loop inflow pipeline, the loop pipeline expansion bend, and the vertical pipeline dissolution chamber, then exchanges oxygen ions with the charging tank before entering the downstream system through the loop outflow pipeline, thus achieving solid oxygen control and oxygen ion exchange.

The invention discloses a portable handheld solid oxygen generator used in a special environment. The portable handheld solid oxygen generator comprises an oxygen generator body, a heat insulation protective layer and a shell. More than two heat insulation protective layers are arranged between the outer wall of the oxygen generator and the shell, and the overall outer diameter is not more than 70 mm; an oxygen generating core of the oxygen generator comprises chlorate, a catalyst, fuel and a chlorine inhibitor; chlorate is sodium chlorate or potassium perchlorate; the catalyst is one or more of cobalt oxide, cobaltosic oxide, cobalt hydroxide or cobalt chloride; the fuel is metal fuel; the chlorine inhibitor is one or more of barium peroxide or calcium hydroxide. The oxygen generator is fast in oxygen generation, high in purity, small in size, light in weight, free of maintenance, easy to operate, convenient to carry, safe, reliable, high in environmental adaptability and low in surface temperature, and can be used under the limiting working condition without being affected by the external environment.

The utility model relates to an air respirator with auxiliary oxygen supply function, which comprises a compressed air supply system, a solid oxygen auxiliary supply system, a mask assembly and a back support assembly. The compressed air supply system comprises a compressed air cylinder, a compressed air pressure reducing valve, a compressed air supply pipeline, a pressure alarm device and an air supply valve. The solid oxygen auxiliary supply system comprises a solid oxygen generator assembly, an oxygen supply pipeline and an oxygen supply valve. The mask assembly comprises a transparent full mask, a half mask nested on the inner side of the full mask and two quick plug-in interfaces for independently connecting the air supply valve and the oxygen supply valve. The back support assembly comprises a shoulder strap, a waist belt and a back plate. The air respirator with auxiliary oxygen supply function can provide emergency oxygen in time after the positive pressure air respirator runs out of air, which is used for the escape of rescue and emergency personnel.

The solid oxygen generator mechanical firing device comprises a firing cap, an energy storage spring, a firing pin seat and a firing base, the firing cap comprises a first caulking groove in the upper end and a second caulking groove in the lower end, and a channel with a narrowed diameter is formed between the first caulking groove and the second caulking groove; the firing pin seat comprises a firing pin located at the bottom end and a column body connected with the firing pin, the energy storage spring is compressed between the column body and the second caulking groove, a locking assembly is arranged between the column body and the first caulking groove, the locking assembly comprises a horizontal through groove formed in the upper end of the column body, and steel balls are symmetrically arranged in the horizontal through groove; and a rotating activation assembly for promoting the steel ball to completely extend into the horizontal through groove is arranged in the column body. Through the design of the rotary double-state locking mechanism, namely the torsion bar, the first abutting face, the second abutting face, the steel ball and the variable-diameter channel, controllable conversion of the three stages of energy storage, safety and percussion is achieved, safety is better, and meanwhile the whole device is simple in structure and convenient to operate.

The invention discloses two novel environment-friendly firecrackers, and belongs to the technical field of firework manufacturing. The first scheme is based on direct heating and dynamic pressure sealing and comprises an outer shell, an inner shell and an internal solid peroxide oxygen source block. The core of the device is that a dynamic pressure sealing mechanism composed of a slidable baffle and a top soft sealing gasket is arranged, sealing is formed through pre-tightening of a lead at the beginning, pressure pushes the baffle to move upwards to press the sealing gasket after gas is generated through reaction, dynamic sealing enhanced along with the pressure is formed, and therefore the pressure is efficiently accumulated to achieve explosion. The second scheme is based on low-temperature indirect and uniform heating, the core is that the heat conductor embedded in the concave position of the inner shell is heated through a low-temperature lead, indirect and uniform heating of the solid oxygen source block is achieved, and decomposition and gas production of the solid oxygen source block are triggered. According to the two schemes, a blocky solid oxygen source is adopted, the problems of pollution and safety of a traditional firecracker are fundamentally solved, the defects that a powder environment-friendly firecracker is prone to being affected with damp and poor in reliability are overcome, and the firecracker is environmentally friendly, safe, high in reliability and real and traditional in experience feeling.

The invention discloses a piezoelectric igniter of a solid oxygen generator. The piezoelectric igniter comprises a solid oxygen generating device and a piezoelectric ignition device, the piezoelectric ignition device comprises a shell, a piezoelectric module and an ignition module, the piezoelectric module comprises a piezoelectric button and a piezoelectric ceramic piece; the ignition module comprises a first electrode and a second electrode; the first electrode is electrically connected with the first electrode end of the piezoelectric ceramic piece and is electrically connected with the first electric connecting part of the solid oxygen generating device; and the second electrode is electrically connected with the second electrode end of the piezoelectric ceramic piece and is electrically connected with the second electric connection part of the solid oxygen generating device. According to the device, piezoelectric pulses are efficiently coupled to the solid oxygen generating device through an end short-path closed loop, ignition consistency and starting reliability are improved, energy loss is reduced, and an external power source is not needed. And the coaxial electrode and the end face are insulated and isolated, shielding failure and creepage are inhibited, and the electrical safety and the environmental adaptability are enhanced.

The utility model discloses an improved oxygen generation structure, which is applied to the field of oxygen generation and comprises a shell, a sleeve is arranged in the shell, a grain is arranged in the sleeve, ignition powder is arranged at one end of the grain, FM (frequency modulation) high-efficiency filter paper is wrapped on the surface of the grain, a front ceramic cover and a rear ceramic cover are respectively clamped at two ends of the sleeve, and the front ceramic cover and the rear ceramic cover are respectively connected with the sleeve. When the improved oxygen generator is used, the improved oxygen generator is suitable for a portable mask, an airship and other closed environments, is process equipment for emergency oxygen supply of existing submarines and nuclear submarines, has the advantages of being small in size, convenient to carry, large in oxygen storage amount, high in oxygen generation rate and not matched with the respiratory system of a person in the using process, and meanwhile is easy to operate and low in cost. And the solid oxygen source has the advantages of high oxygen yield, easiness in storage, high reaction speed, high stability and convenience in use. Meanwhile, inert gas can be introduced into the shell to guarantee long-term storage.

The invention relates to a marine nuclear waste heat driven compact water and oxygen making system and a control method, and the system comprises a water making unit which comprises a multi-effect evaporator connected to a nuclear energy secondary loop system, the multi-effect evaporator heats seawater to generate steam and condenses the steam into fresh water, and the multi-effect evaporator is connected with a purification device for purifying the fresh water; the oxygen generation unit comprises a solid oxygen candle oxygen generation module and an electrolyzed water oxygen generation module, the solid oxygen candle oxygen generation module takes sodium chlorate as an oxygen source and generates oxygen through a thermal decomposition reaction, and pure water purified by the electrolyzed water oxygen generation module generates oxygen through electrolyzed water; and the control unit dynamically controls the pure water produced by the water production unit to the oxygen production unit according to the ship operation working condition, the oxygen demand and the electrical load, and controls the start and stop and the oxygen production of the solid oxygen candle oxygen production module and the electrolyzed water oxygen production module. The oxygen generation mode can be switched according to the operation state of the nuclear energy ship, the solid oxygen candle oxygen generation module is preferentially used for generating oxygen when power is insufficient, and when power is sufficient, the solid oxygen candle oxygen generation module and the solid oxygen candle oxygen generation module are used simultaneously to better meet different navigation requirements.

The present application provides a slag-reducing and high-efficiency smelting method and system based on submerged supersonic gas-solid injection, which relates to the metallurgical field. The method includes: a raw material addition period, a melting period, an oxidation and heating period, and a tapping stage. The slag-reducing and high-efficiency smelting system based on submerged supersonic gas-solid injection includes: an electric arc furnace, a powder injection tank, a submerged supersonic gas-solid oxygen lance, and a control device; the electric arc furnace is used for smelting a target steel grade, the powder injection tank is used for conveying slag-making materials to the submerged supersonic gas-solid oxygen lance, the submerged supersonic gas-solid oxygen lance is used for conveying the slag-making materials, methane, oxygen, and protective gas into the steel slag layer of the electric arc furnace, and the control system is used for controlling the submerged supersonic gas-solid oxygen lance. The slag-reducing and high-efficiency smelting method and system provided by the present application have the following advantages: the dephosphorization efficiency is increased by about 2.5-5%, the slag amount is reduced by 5-20 kg / t, the consumption of slag-making materials is reduced by 5-10%, and the metal yield is increased by more than 0.5%.

The utility model relates to an automatic oxygen supply device which comprises a cabinet body and an oxygen generator. The oxygen generator is arranged in the cabinet body and comprises a base and a medicine cylinder, the base is fixedly arranged in the cabinet body and provided with a conductive terminal, the medicine cylinder comprises an outer cylinder, an inner cylinder, a resistance wire and a heat insulation sleeve, the inner cylinder is arranged in the outer cylinder, and the resistance wire is arranged in the heat insulation sleeve. The bottom of the inner cylinder is provided with a terminal socket electrically connected with the conductive terminal, the heat insulation sleeve is arranged in the inner cylinder, a cavity used for containing solid oxygen powder is formed in the heat insulation sleeve, the resistance wire is arranged in the cavity and electrically connected with the terminal socket, the side end of the inner cylinder is provided with an air hole, and the air hole is communicated with the cavity. And an air outlet hole is formed in the top of the outer cylinder. According to the automatic oxygen supply device, heat dissipation of the oxygen generator can be reduced, the phenomenon that electric appliance elements in the automatic oxygen supply device are overheated and damaged due to heat dissipation is avoided, and the service life of the automatic oxygen supply device is effectively prolonged.

The invention discloses a method for preparing a hydrogen-corrosion-resistant chloride-ion-abrasion-resistant passive film layer based on CO2 one-step in-situ oxygen-carbonization and application, and belongs to the technical field of metal corrosion and protection. The method comprises the following steps of: decontaminating, grinding, polishing and drying Ti, Cr, Zr, Al or an alloy base material thereof, putting the Ti, Cr, Zr, Al or the alloy base material thereof into a reaction cavity, taking CO2 gas as an oxygen-carbonization main component, and optionally combining the CO2 gas with air or a solid oxygen supply body NiO to form an oxygen-carbonization system; and the CO2 gauge pressure is controlled to be 0-8.0 MPa, the temperature is 250-750 DEG C, heat preservation is conducted for 3-8 h, and a passive film layer is generated on the surface of the base material through the one-step in-situ oxygen-carbonization reaction. The film layer has excellent hydrogen corrosion resistance and chloride ion abrasion resistance, the preparation method is green and environment-friendly, the preparation process is simple and efficient, and the technology is mature and reliable.

The invention relates to a composite flame retardant for preventing spontaneous combustion of coal and a preparation method and application thereof, and belongs to the technical field of fire prevention and extinguishing materials for coal mines. The composite flame retardant comprises a solid oxygen barrier and a liquid flame retardant, the solid oxygen barrier comprises the following components: quicklime, clay and charcoal, the liquid flame retardant comprises the following components: zinc borate, hydrochloric acid, ammonia water, a moisture-proof agent, epoxy resin and water, and the moisture-proof agent of the liquid flame retardant comprises zinc powder, calcium chloride, polyvinyl alcohol, diatomite and water; the composite flame retardant effectively improves the noninflammability of coal in the stacking, storage and transportation processes through double mechanisms of oxygen isolation flame retardance and synergistic flame retardance, eliminates potential safety hazards, and can also prevent a coal pile from being affected with damp, reduce the oxidation loss of the coal and reduce the waste of coal resources.

The invention relates to an integrated method for the thermal conversion and indirect combustion of a heavy hydrocarbon feedstock in a redox chemical cycle for the production of hydrocarbon streams. The heavy hydrocarbon feedstock (1) is brought into contact with inert particles (2) in a thermal conversion zone (100). The thermal conversion, in the absence of hydrogen, water vapor, and a catalyst, produces a first gaseous effluent of hydrocarbon compounds (4) and coke, which is deposited onto the inert particles (5). These particles are subsequently burned in a redox chemical cycle (200) in the presence of solid oxygen-carrying particles (6). In this way, the inert particles flow between the thermal conversion zone (100) and a reduction zone (300) of the chemical cycle, while the solid oxygen-carrying particles flow between the oxidation (400) and reduction (300) zones of the same cycle.

A method for extracting metal and oxygen from powdered metal oxides in electrolytic cell is proposed, the electrolytic cell comprising a container, a cathode, an anode and an oxygen-ion-conducting membrane, the method comprising providing a solid oxygen ion conducting electrolyte powder into a container, providing a feedstock comprising at least one metal oxide in powdered form into the container, applying an electric potential across the cathode and the anode, the cathode being in communication with the electrolyte powder and the anode being in communication with the membrane in communication with the electrolyte powder, such that at least one respective metallic species of the at least one metal oxide is reduced at the cathode and oxygen is oxidized at the anode to form molecular oxygen, wherein the potential across the cathode and the anode is greater than the dissociation potential of the at least one metal oxide and less than the dissociation potential of the solid electrolyte powder and the membrane.

The invention discloses a design and a manufacturing method of an integrally-formed integrated functional solid oxygen generator. The solid oxygen generator is integrally formed through a metal additive manufacturing (3D printing) technology. According to the design method of the solid oxygen generator, a self-locking type splicing guide rail integrated with a main body structure and used for rapid array combination of a plurality of solid oxygen generators, a phosphorus coating nail point and a limiting and mistaken touch preventing structure for guiding ignition operation of the phosphorus coating nail are included. The manufacturing method comprises the following steps: printing the integrated functional solid oxygen generator through a selective laser melting (SLM) or laser directed energy deposition (L-DED) process, and loading the prefabricated chemical reaction core into the solid oxygen generator during assembly. According to the solid oxygen generator, multiple functions such as mounting and fixing, safety protection and the like are highly integrated into the solid oxygen generator, and the heat dissipation performance, deployment flexibility and use safety of the product are remarkably improved.

The present invention discloses a liquid hydrogen discharge gas-sealed storage tank and its gas-sealing method. The present invention relates to the related field of hydrogen refueling stations, and includes two identical brackets. A cushion block is fixedly provided at the lower end of the bracket, and a storage tank is fixedly provided at the upper end of the bracket. The interior of the storage tank is a hollow structure, and the storage tank can store liquid hydrogen. A liquid hydrogen inlet pipe is connected to the left side of the storage tank, and a liquid hydrogen inlet valve is provided in the liquid hydrogen inlet pipe. The present invention uses hydrogen or helium to purge at the discharge port, so that the discharge port is in a hydrogen or helium atmosphere, isolating the storage tank exhaust port from the air, achieving a gas-sealing effect, thereby avoiding the appearance of liquid oxygen, solid oxygen, liquid nitrogen, and solid nitrogen. At the same time, the system is simplified and the cost is reduced. When it is detected that the temperature reaches a certain condition, the jet mechanism can be triggered to move to the outlet of the air outlet pipe and wrap around the surroundings, so as to better isolate the air.

The invention belongs to the technical field of liquid metal coolants, and particularly relates to a lead-based liquid metal solid oxygen control device and method. The lower end of the outer cylinder is connected with the inlet connecting pipe through the flow dividing cavity, the flow dividing cavity is of an inverted-cone-shaped structure, a lower flange is arranged at the upper end of the outer cylinder, a plurality of positioning bosses are arranged on the lower surface of the lower flange, the upper end of the outer sleeve is fixedly connected with the positioning bosses, and the bottom of the outer sleeve is of an integral sealing plate type. Fixed connection is realized through a bottom sealing plate; the outer sleeve is of an annular pipe structure, and the inner sleeve is arranged in the outer sleeve. According to the method, the PbO particles can be rapidly replaced, falling PbO particle fragments are prevented from flowing into a system to become impurities while it is guaranteed that the PbO particles are fully dissolved in the liquid metal, and the method can be applied to solid-state efficient oxygen removal of the lead-based liquid metal.