Cold helium heating and pressurizing system for rocket oxygen tank

Abstract

The invention discloses a cold helium heating and pressurizing system and method for a rocket oxygen tank. The cold helium heating and pressurizing method for the rocket oxygen tank comprises the steps that a certain number of cold helium cylinders are placed in the liquid oxygen storage tank, helium in the cold helium cylinders enters a gas pillow of the liquid oxygen storage tank after passing through a filter, an electromagnetic valve, a pressure reduction device, a throttling ring and a heater, and then liquid oxygen is pressurized. The cold helium heating and pressurizing system and method for the rocket oxygen tank have the advantages that helium in the cold helium cylinders enters the gas pillow of the liquid oxygen storage tank after being filtered, decompressed and heated, so thatliquid oxygen is pressurized, and the requirement for the pressure at an inlet of an engine is met. Through reasonable design of the cold helium heating and pressurizing system, it is ensured that under the normal operating condition of the cold helium heating and pressurizing system, the self weight of the heating and pressurizing system can be reduced, meanwhile, the effective utilization rateof helium can be increased, the carrying capacity of a rocket is improved accordingly; and meanwhile, the heating and pressurizing system has high safety and reliability.

Description

technical field [0001] The invention belongs to the field of spacecraft system technology and cryogenic engineering technology, and in particular relates to a rocket oxygen tank cooling helium heating and pressurizing system with a novel structure. Background technique [0002] Cryogenic liquids such as liquid hydrogen and liquid oxygen are currently the main propellants for high-thrust rockets, and the cold helium pressurization system is one of the key technologies for cryogenic liquid propulsion systems. The system usually uses helium as the pressurization medium, and the helium cylinder is placed in a liquid hydrogen or liquid oxygen tank. After decompression and heating, the low-temperature and high-pressure helium enters the air pillow of the liquid oxygen tank to maintain the Boost to ensure the pressure requirements of the engine pump inlet. Cold helium pressurization can reduce the weight of the pressurization system, reduce the amount of helium used for pressure s...

AI Technical Summary

Problems solved by technology

However, the utilization efficiency of the propellant is not high, and a large amount of propellant is required for gas pressurization

[0012] Patent Publication No. CN105299461A, titled "Liquid Launch Vehicle Simulated Fuel Pressurization and Gas Distribution Console" The console disclosed in the patent application mainly includes A and B two boxes of booster solenoid valves. The booster solenoid valve of A box is used to control the on-off of gas on the gas path branch of A box, and the pressure gauge of A box and the pressure sensor of A box are connected to detect the gas pressure leading to A box. This scheme can be applied to the rocket storage tank. Supercharging, but the system is complicated, the volume is large, and it is not easy to carry the rocket

[0013] Patent Publication No. CN2594498Y, the booster pump disclosed in the patent named "Magnetic Levitation Liquid Booster Pump" belongs to a kind of liquid pressure increases in the centrifugal force field of the magnetic levitation high-speed rotating rotor, and the kinetic energy is converted into pressure energy through the stagnation tube to further increase the pressure. The equipment specifically involves a magnetic levitation liquid booster pump, but the output flow of the liquid is pulsating, the vibration is strong, and the quality and complexity of the supply system are increased

[0014] To sum up, the existing pressurization system has defects such as complex system, insufficient stability, high loss of propellant, and high quality.

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