Hydrogen-oxygen igniter adopting glow plugs

Abstract

A hydrogen-oxygen igniter adopting glow plugs comprises an oxygen cavity top cover, a head part, a body part, the glow plugs and a hydrogen cavity top cover. The hydrogen cavity top cover sleeves the outer side of the upper part of the body part, the head part is welded at the top end of the body part, a hydrogen collection cavity is formed among the hydrogen cavity top cover, the head part and the body part, and a cavity of the head part communicates with a cavity of the body part to form an igniter inner cavity; and the hydrogen collection cavity communicates with a cooling jacket of the body part through a throttling hole. The oxygen cavity top cover is welded on the head part; an oxygen collection cavity is formed between the oxygen cavity top cover and the head part, a blind hole is machined in the top end of the head part and communicates with the igniter inner cavity, and an oxygen injector is machined on the side surface of the top end of the blind hole. The two glow plugs are symmetrically mounted on the head part, a hydrogen injection cavity, a hydrogen injector and two hydrogen flow channels are further machined in the head part, each hydrogen flow channel is perpendicular to the axis of a glow plug hole and communicates with the hydrogen collection cavity and the hydrogen injection cavity in the head part, and the hydrogen injection cavity communicates with the igniter inner cavity through the hydrogen injector. The ignition reliability is improved, and the application field of the electric igniter is expanded.

Description

Technical field [0001] The present invention belongs to the field of aerospace ignition combustion technology, which relates to a hydrogen oxygen igniter using electric hemp. Background technique [0002] The torch electric lighter is highly launched, and the structure is simple, and the structure is simple, easy to maintain, etc., such as the US RL-10 series, J2, Space aircraft main engine, European Vinci, Japan's LE series, Russia's RD-0120, etc., my country has also achieved preliminary results in the hydrogen and oxygen torch electric lighter. [0003] At present, there is a spark plug as an ignition heat source. The spark plug housing is metal. In the complex working environment of the ignition, it is necessary to ensure reliable ignition, but also to ensure that gas ablation, the igniter needs to consider combustion and Spark plug hot protection demand, the design is difficult; the spark plug needs the exciter to work, there is electromagnetic interference, need to specific...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a hydrogen-oxygen igniter using a glow plug, to solve the electromagnetic interference of the electric igniter, the ignition element is easy to ablate, and the ignition reliability is limited by environmental pressure and sparks. To solve the problem of energy, improve the reliability of ignition from the structural design of the igniter, and expand the application field of the electric igniter

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