Liquid oxygen temperature zone cold helium pressurization system

Abstract

The invention relates to a liquid oxygen temperature zone cold helium pressurization system. In the system, a pressurized gas cylinder 3 is immersed in a liquid oxygen storage tank 1, and can fully exchange heat with liquid oxygen. The b pressurized gas cylinder 3 is arranged, in the liquid oxygen storage tank 1, near the upper part of the storage tank, after a few seconds of flight, the pressurized gas cylinder 3 is exposed from the liquid oxygen, at the end of the flight, the residual gas in the pressurized gas cylinder 3 is smaller and the utilization rate of medium is improved. After the pressurized gas flows out of the cylinder, the enthalpy value of the pressurized gas is increased by making full use of the heat exchange of pipelines, aerodynamic heating and the heat exchange betweenthe gas and fuel in the storage tank. The parallel redundant design of a pressurization solenoid valve can improve the work reliability and fault tolerance ability of the system. The pressurization system avoids the coupling with an engine, omits a heat exchanger of the engine, and saves the development cost, and at the same time, the pressurization system can be self-verified and improves the accuracy of the pressurization design.

Description

technical field [0001] The invention relates to a cold helium pressurization system in a liquid oxygen temperature zone, in particular to a pressurization system for a cryogenic liquid launch vehicle. Background technique [0002] The storage tank gas storage pressurization system of the liquid rocket refers to the way in which the pressurized medium pre-stored in the gas storage device on the rocket enters the storage tank at a certain flow rate for pressurization. According to the different ways of gas storage in gas cylinders, gas storage pressurization in gas cylinders can be divided into three supercharging methods: normal temperature and high pressure gas storage, low temperature and high pressure gas storage, and low temperature and low pressure liquid storage. At present, the commonly used gas storage pressurization systems at home and abroad mainly include normal temperature and high pressure gas pressurization and low temperature and high pressure gas pressurizatio...

AI Technical Summary

Problems solved by technology

However, this kind of scheme relies too much on the engine, and it needs to carry out relevant test verification jointly with the engine to determine whether the final system design scheme is correct, and it is difficult to simulate accurately the system test without the engine

In addition, there is a certain pressure loss when the pressurized gas enters the engine heat exchanger, and the final remaining gas volume is large, wasting part of the pressurized medium

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