A Hydrogen Oxygen Igniter Using Glow Plug

Abstract

A hydrogen-oxygen igniter using electric glow plugs includes an oxygen chamber top cover, a head, a body, electric glow plugs and a hydrogen chamber top cover. The hydrogen chamber cover is set on the outside of the upper part of the body, and the head is welded on the top of the body. A hydrogen collection chamber is formed between the hydrogen chamber cover, the head and the body, and the cavity of the head is connected with the cavity of the body to form an ignition The inner cavity of the device; the hydrogen collection cavity communicates with the cooling jacket of the body through the throttle hole. The top cover of the oxygen chamber is welded on the head; an oxygen collection chamber is formed between the top cover of the oxygen chamber and the head, and a blind hole is processed on the top of the head, which communicates with the inner cavity of the igniter. injector. Two glow plugs are installed symmetrically on the head, and a hydrogen injection cavity, a hydrogen injector and two hydrogen flow channels are also processed in the head, each hydrogen flow channel is perpendicular to the axis of the glow plug hole, and is used to connect the hydrogen collection The hydrogen injection cavity in the cavity and the head, the hydrogen injection cavity communicates with the inner cavity of the igniter through the hydrogen injector. The invention improves the ignition reliability and expands the applicable field of the electric igniter.

Description

technical field [0001] The invention belongs to the technical field of aerospace ignition and combustion, and relates to a hydrogen-oxygen igniter using a glow plug. Background technique [0002] Torch-type electric igniters are widely used in hydrogen-oxygen rocket engines because of their high ignition energy, multiple starts, simple structure, and easy maintenance, such as the RL-10 series, J2, and space shuttle main engines in the United States, Vinci in Europe, Japan's LE series, Russia's RD-0120, etc., my country has also achieved preliminary results in hydrogen-oxygen torch electric igniters. [0003] At present, the torch-type electric igniters at home and abroad all use spark plugs as the ignition heat source. The spark plug shell is made of metal. In the complex working environment of the igniter, it is necessary to ensure reliable ignition and to ensure that it will not be ablated by gas. The igniter must also consider combustion and Spark plugs require thermal pr...

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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