10 results about "Liquid argon" patented technology

This invention discloses a novel liquid argon filling pump sealing gas system, belonging to the field of metallurgical air separation oxygen production technology. It includes a liquid argon storage tank, a booster, and a liquid argon filling pump. A liquid phase outlet at the lower end of the liquid argon storage tank is connected to the liquid argon filling pump via a first pipe to fill the pump with liquid argon. Another liquid phase outlet at the lower end of the liquid argon storage tank is connected to the booster via a second pipe. A gas phase outlet at the upper end of the liquid argon storage tank is connected to the booster via a third pipe. The booster is connected to the sealing gas interface of the liquid argon filling pump via an instrument pipe to supply a sealing gas source. The instrument pipe is connected to the second pipe via a tee. The gas phase outlet of the liquid argon storage tank forms a vent outlet at the top of the liquid argon storage tank via a tee on the third pipe. Gaseous argon from the upper end of the liquid argon storage tank enters the booster, is reheated to room temperature by the booster, and then enters the sealing gas interface of the liquid argon filling pump via the instrument pipe as a sealing gas. This system ensures the purity of the liquid argon product, promotes resource reuse, and effectively reduces costs.

The utility model relates to low temperature gas cylinder filling technical field, concretely relates to a kind of argon and carbon dioxide mixed gas filling equipment including base, the upper surface of the base is fixedly connected with two symmetrical support frames, the inner wall of two The support frame is respectively provided with liquid argon storage tank and low-temperature liquid carbon dioxide storage tank, the outer wall between two The support frame is fixedly connected with support plate, the inner wall of the support plate is fixedly connected with mixing box, the inner wall of the liquid argon storage tank is fixedly connected with argon filling pipeline. The utility model is provided with filling busbar, can be connected with multiple gas steel cylinders simultaneously, realize the filling of multiple gas steel cylinders simultaneously, accurately control the filling amount of two kinds of gas, to ensure that argon and carbon dioxide are mixed according to specific ratio, while impeller can fully stir and mix argon and carbon dioxide entering mixing box, ensure that mixed gas composition is uniform, improve the use effect of the filling equipment.

This invention discloses an automatic start-up and load-variable control method for an air separation argon purification system. Automatic start-up, load-variable operation, and steady-state adjustment of the argon purification system no longer require operator intervention; operators only need to change the system's load flow rate setpoint. During automatic start-up, load-variable operation, and steady-state adjustment, the system operates stably, and the nitrogen content of the liquid argon in the product meets requirements. This completely solves the problems of easy overpressure in the argon purification tower and the necessity of discharging substandard liquid argon during the initial automatic operation of the argon purification system, eliminating safety hazards and saving energy consumption. When the argon purification system is operated at reduced load, the minimum load can reach 20% of the normal load, and the operating conditions remain stable, while the product quality still meets requirements. This solves the problem of frequent start-up and shutdown of the argon purification system when user usage fluctuates significantly.

The application provides an argon recovery energy efficiency control method and intelligent system for a titanium powder manufacturing process, and relates to the technical fields of metal powder metallurgy preparation and industrial gas recovery energy efficiency control, wherein the method comprises the following steps: controlling liquid argon gasification, mixing the recovered gas, processing through a medium-pressure machine, a purifier and a high-pressure machine, and sending to a gas atomization device; extracting tail gas for recovery by a fan; and dispatching a water cooling system to absorb waste heat of the unit and send the waste heat to a gasification module and a purifier for reuse. The control method extracts a pressure drop slope in real time, calculates a fluid transmission lag time window faced by waste heat delivery when the pressure drop slope exceeds a limit, controls the medium-pressure machine to generate transient compensation heat energy by using internal airflow rotation within the time window, urgently directs the waste heat intended for the purifier to the gasification module to make up for a sudden increase in cold load, and transfers the compensation heat energy to the purifier to maintain a temperature threshold. The control method effectively eliminates the global thermal imbalance phenomenon caused by the heat transmission delay of the pipe network.

This invention relates to the field of chemical automation technology, specifically to an automatic switching continuous gas supply system for argon, comprising a gas source module including a liquid argon vacuum storage tank and a multi-parameter interlocking control system. The liquid argon vacuum storage tank is connected to an ambient temperature vaporizer, and the downstream end of the ambient temperature vaporizer is connected to a gas buffer tank. The output end of the gas buffer tank is connected to an argon pressure regulating valve group. The liquid argon vacuum storage tank includes a tank body and a self-pressurization control system. The liquid argon is pressurized to 1.0 MPa by the self-pressurization control system and then enters the ambient temperature vaporizer to complete the gas-liquid conversion. The vaporized argon is depressurized to 0.65 MPa by the argon pressure regulating valve group and then supplied to the electroslag furnace at the gas-consuming terminal. This system combines two modes: gravity-driven self-drainage of the storage tank and passive vaporization pressurization by the self-pressurizer. When the tank pressure is acceptable but the flow rate is insufficient, gravity-driven self-drainage is relied upon. When the pressure is below the operating threshold, the self-pressurization control system is triggered to utilize ambient waste heat for vaporization pressurization.

This utility model discloses an argon recovery system, including a distillation column and a heat exchanger. Waste argon gas to be treated, after heat exchange in the heat exchanger, enters the bottom of the distillation column through a pipeline. The bottom of the distillation column is connected to the middle of the column via a main pipeline, and the bottom of the distillation column is also connected to a condenser / evaporator at the top of the column via a pipeline. Pure argon gas at the top of the distillation column enters the heat exchanger through a pipeline and is then discharged from the cold box. A liquid argon reinjection pipeline is connected to the main inlet pipeline, and an atomizing nozzle is installed at the liquid argon outlet end of the liquid argon reinjection pipeline. In this argon recovery system, liquid argon is reinjected into the main inlet pipeline through the atomizing nozzle. The sprayed low-temperature atomized liquid argon fully contacts the hot feed argon gas, uniformly reducing the temperature of the feed argon gas. With the flow of gas, the temperature of the entire distillation column is uniformly cooled, achieving rapid start-up. The actual start-up time is 12-24 hours.

This invention discloses a liquid nitrogen and liquid oxygen / liquid argon coupled power generation and cryogenic technology, belonging to the fields of new energy power generation and cryogenic refrigeration. Based on the prior patent application CN202410774560.6 (a temperature difference and pressure difference coupled power generation and refrigeration technology), the working fluid and equipment are further optimized. Utilizing the different physical properties of liquid nitrogen and liquid oxygen / liquid argon in their saturated states—different pressures at the same temperature and different temperatures at the same pressure—a temperature gradient and a pressure gradient always exist. Under the action of the heat exchange coil, the two working fluids maintain a low temperature difference and a large pressure difference. Using the pressure difference potential energy, octafluoropropane liquid flows, driving a cryogenic turbine to generate electricity, while the temperature of both working fluids gradually decreases. Then, using a room temperature heat source or cryogenic waste heat, the low-pressure working fluid (liquid oxygen / liquid argon) is heated, the pressure difference reverses, and octafluoropropane flows in the opposite direction, driving an axial-flow turbine to continue generating electricity (rotation unchanged), while the medium returns, completing the cycle of power generation. Simultaneously, the liquid oxygen / liquid argon cools or condenses the external heat source, supplying cold energy to the outside world or being used for liquefied natural gas, liquefied air, etc.

This utility model discloses a variable pipeline welding front-side argon purging protection device, including a device housing, an argon arc gun sleeve, an argon gas pipe, and stainless steel mesh. The argon arc gun sleeve is fixed to the side of the device housing, and an argon arc welding gun is fixed inside the sleeve. The device housing is a square hollow shell, with its open end face abutting against the pipeline. An argon gas pipe is fixed inside the housing, and several argon gas outlets are evenly distributed on the pipe. Stainless steel mesh is fixed to the argon gas outlets and attached to the inner wall of the pipe. The argon gas inlet at the end of the pipe connects to the outlet of a liquid argon gas tank, and the pipe is used to transport argon gas. This utility model can provide front-side gas protection during pipeline argon arc welding, and the output gas flow is stable.

This invention discloses a liquid argon filling device and method, relating to the technical field of liquid filling. It includes a liquid argon pump with a plurality of rotor tooth grooves on its pump shaft and a plurality of stator tooth grooves on its end cover. The stator tooth grooves cooperate with the pump shaft surface to form a labyrinth seal structure. The device further includes: an inlet ring groove located on the end cover and externally connected to a high-purity argon gas source; a return ring groove located on the end cover and externally connected to an argon gas recovery device; and a control system for controlling the operating modes of the liquid argon pump. The operating modes of the liquid argon pump include: a liquid argon filling mode, where a high-purity argon gas source delivers argon gas into the labyrinth seal structure through the inlet ring groove, while the argon gas recovery device recovers argon gas through the return ring groove, and the argon gas flows within the labyrinth seal structure to form a dynamic sealing barrier; and a standby idle mode, where, after filling, the control system controls the liquid argon pump to operate at a low speed, and high-purity argon gas is continuously supplied to maintain the dynamic sealing barrier.

This utility model relates to the field of liquefied air separation technology and proposes a liquid storage system, including: a heat exchange mechanism, a liquid nitrogen storage tank, and a liquid argon storage tank; the heat exchange mechanism includes an inner cylinder and an outer cylinder, with the inner cylinder located inside the outer cylinder; a nitrogen pipeline and a liquid nitrogen pipeline are respectively connected to the outer cylinder, the nitrogen pipeline connecting to the top of the liquid nitrogen storage tank and the liquid nitrogen pipeline connecting to the liquid nitrogen storage tank; an argon pipeline is connected to the top of the inner cylinder, and a reflux pipeline is connected to the bottom of the inner cylinder, with the argon pipeline and reflux pipeline respectively connected to the top of the liquid argon storage tank. This system, while storing liquid nitrogen and liquid argon, utilizes a small amount of liquid nitrogen and nitrogen evaporated from the upper part of the liquid nitrogen storage tank to recover argon evaporated from the upper part of the liquid argon storage tank. Compared to existing methods of directly venting nitrogen and argon into the air, this system achieves cold energy recovery and reuse, effectively reducing liquid argon loss and improving economic efficiency.