A fuel supply system for liquid rocket motor testing

Abstract

The invention discloses a fuel supplying system for a liquid-propellant rocket engine test. The fuel supplying system for the liquid-propellant rocket engine test comprises a hydrogen source system, a hydrogen conveying pipeline system and a gas distribution platform system. The hydrogen source system comprises a large high-pressure gas storage tank, a high-pressure gas cylinder, a filter, a manual adjusting and pressure reducing device, a hydrogen pump and a pipeline. The hydrogen conveying system comprises three main paths and an ignition path d, wherein the three main paths are respectively the main path a, the main path b and the main path c. The gas distribution platform system comprises three main path branch paths, an ignition path branch path, a fifth branch path and a blowdown filling gas path. The three main path branch paths are respectively the main path branch path a, the main path branch path b and the main path branch path c. According to the fuel supplying system for the liquid-propellant rocket engine test, the principle that low-pressure hydrogen and high-pressure hydrogen are used in an isolated mode is utilized, the high-pressure hydrogen is directly filled into the high-pressure gas cylinder and the low-pressure hydrogen goes through a certain pressure reducing and boosting device to have high pressure and is continuously filled into the high-pressure gas cylinder. Leftover media in the hydrogen cylinder are fully utilized and the utilization rate is improved.

Description

technical field [0001] The invention relates to a fuel supply system device for a rocket engine test, belonging to the technical field of aerospace engines. Specifically, the supply system is aimed at testing liquid rocket engines fueled by hydrogen. Background technique [0002] The liquid rocket engine supply system is an essential part of the engine test process, and its main function is to supply engine fuel and oxidant. As an important fuel source, hydrogen occupies an important position in the field of aerospace propellants. The main advantages of hydrogen as a propellant include light molecular weight, high energy, non-toxic and non-polluting, etc. Therefore, the construction of the hydrogen supply system platform has become a key technology for the successful liquid rocket engine test. [0003] At present, in the process of building the engine test system platform in China, for the hydrogen source part, the hydrogen storage tank is directly inflated with high-press...

AI Technical Summary

Problems solved by technology

Such an operation requires the air pressure in the gas cylinder to be higher than the pressure in the gas tank, and at the same time causes waste of the remaining gas in the hydrogen gas cylinder

In addition, most of the main pressure reducers are placed in the gas distribution platform, and the main pressure reducer is directly adjusted through the gas distribution platform, in order to expect the adjustment parameters to meet the test requirements, but because the propellant needs to circulate inside the main pressure reducer , the operator directly controls and adjusts the pressure regulating range of the pressure reducer manually, which increases the possibility of direct contact between the hydrogen medium and personnel. Considering that hydrogen is a flammable and explosive medium, the system has certain dangers

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