Storage and supply device for rocket engine igniter

Abstract

The invention relates to a rocket engine igniter storage and supply device, which mainly includes a shell assembly, a metal bellows assembly, a gas path isolation assembly and a liquid path isolation assembly. The igniter is a strong chemically active substance, and its storage and use require oxygen and water to isolate the environment. The present invention uses a metal shell, a metal diaphragm box, a gas path and a liquid path isolation diaphragm to realize the sealed storage of the igniter liquid; during the supply process of the igniter , the metal diaphragm box is used as a management element to ensure complete gas-liquid isolation, and the metal diaphragm box can be reused many times; the gas path and liquid path isolation diaphragms are connected to the module housing with redundant sealing joints, which can not only be reliably sealed, but also It can be easily replaced; the addition and discharge valve is used for the filling of igniter liquid and positive pressure inert gas packaging, and the pressure sensor is used to monitor the pressure of the air cavity in the module to ensure a positive pressure safe storage environment. Through the above features, the safe and reliable storage of the ignition agent liquid can be realized, and it has the characteristics of multiple supply and reusable use.

Description

technical field [0001] The invention relates to the technical field of liquid rocket engines, in particular to a rocket engine igniter storage and supply device. Background technique [0002] For rocket engines with a combination of liquid oxygen and hydrocarbon propellants, since the propellant combination cannot spontaneously ignite, a special ignition system is required for engine ignition. Ignition starting with a self-igniting igniter has been widely proven to be a reliable, compact and efficient ignition scheme. Its main working principle is: install a special container pre-filled with igniting agent in the engine fuel pipeline system, press the pressurized gas to squeeze the igniting agent into the engine combustion chamber, the igniting agent and liquid oxygen undergo a spontaneous combustion reaction, and then organize fuel injection. Into the mixed combustion, to achieve ignition. The storage and supply module of igniter is an important part of the ignition syste...

AI Technical Summary

Problems solved by technology

The ignition guide is installed in the fuel pipeline system, and the capacity is the dose used for one ignition; the isolation and sealing device is a welded structure, which cannot be replaced after use

The above characteristics determine that the ignition duct can only be used for an engine system that starts once; at the same time, the ignition duct cannot realize the gas-liquid isolation of the ignition agent and the pressurized gas, and cannot realize the liquid supply management under complex overload conditions

Images