Novel hydrogen peroxide multistage catalytic decomposition type gas generator

Abstract

The invention relates to the field of rocket engines, in particular to a novel hydrogen peroxide multistage catalytic decomposition type gas generator, which comprises a first-stage hydrogen peroxide inlet, wherein a first-stage hydrogen peroxide silver mesh catalytic bed, a first-stage lattice structure, a second-stage hydrogen peroxide gas-liquid injection disc, a second-stage downstream mixing cavity, a second-stage lattice structure, a third-stage hydrogen peroxide gas-liquid injection disc, a third-stage downstream mixing cavity, a third-stage lattice structure and a generator outlet are sequentially arranged on the downstream of the first-stage hydrogen peroxide inlet, a second-stage hydrogen peroxide inlet is formed in the second-stage hydrogen peroxide gas-liquid injection disc, and a third-stage hydrogen peroxide inlet is formed in the third-stage hydrogen peroxide gas-liquid injection disc. According to the gas generator, high-temperature and high-pressure gas with rated flow is generated through self-decomposition reaction of multistage hydrogen peroxide, mechanical equipment such as a turbine and the like are pushed to do work, large-range adjustment of the flow of the gas generator is achieved through three-stage gas inlet, it is guaranteed that the working pressure is stable, and the power capability of the generator is improved.

Description

technical field [0001] The invention relates to the technical field of rocket engines, in particular to a novel hydrogen peroxide multistage catalytic decomposition gas generator. Background technique [0002] In recent years, reusable rockets have become a development hotspot and trend in aerospace at home and abroad, which can greatly reduce the cost of space launches. The engine system of the rocket is the core of the rocket, and the gas generator cycle is one of the main cycle modes of the rocket engine. Commonly used generators for rockets are divided into oil-rich gas generators and oxygen-rich gas generators. Oxygen-enriched combustion can make full use of fuel. If the concentration of oxygen can be controlled, it can effectively control the burning of oxygen-enriched components such as the combustion chamber, thereby improving the working efficiency and service life of the generator. The method of directly driving the turbine to do work through the catalytic reacti...

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Problems solved by technology

[0003] However, due to the influence of factors such as the bed load of the catalytic bed and the gas-liquid two-phase flow in the reaction chamber, the flow adjustment range of this type of generator is limited; specifically, during use, when the actual flow is less than the design flow, It is easy to cause pressure oscillation at the inlet and outlet of the generator ( figure 1 As shown), thus affecting the normal use; when the actual flow rate exceeds the design value, due to the insufficient reaction of part of the hydrogen peroxide, the outlet temperature of the generator will drop, reducing the working efficiency of the generator

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