An ignition system for a mixture of micron metal powder and liquid water

Abstract

The invention discloses an ignition system for a micron metal powder and liquid water mixture. The ignition system comprises a striking unit provided with heat by an oxidation reduction reaction, an ignition unit used for triggering the striking unit to burn, and a burning unit struck by the striking unit; the ignition unit is a control circuit including an electric heating wire; the burning unitis a gel system formed in the mode that micron metal powder is dispersed into water through gel, wherein an ignition reaction between the micron metal powder and the water is difficult; and the ignition unit comprises an ignition powder layer, a magnesium powder layer and an ignition gel layer, wherein the ignition powder layer is triggered by the electric heating wire and provided with the heat by the oxidation reduction reaction to uniformly heat the burning unit, the magnesium powder layer is used for blocking direct contact between the ignition powder layer and the burning unit and transmits heat generated by the ignition powder layer to the burning unit, and the ignition gel layer used for stably transmitting the heat of the magnesium powder layer to the burning unit so as to fully ignite the burning unit. The ignition system can achieve layered step-by-step ignition, the ignition temperature is high, and metal powder with any micron size and the water can be ignited stably.

Description

technical field [0001] The invention belongs to an ignition device, in particular to an ignition system for a mixture of micron metal powder and liquid water. Background technique [0002] Water-reactive metal fuels such as aluminum and magnesium have the advantage of high energy density and have broad application prospects in underwater propulsion and space propulsion. At the same time, the water reaction of metal fuels has also received long-term attention as a way to produce hydrogen. [0003] At home and abroad, a lot of research has been done on the combustion characteristics of the nano-aluminum / water mixed system. Nano-scale aluminum powder has high activity and is easy to ignite, but the aluminum oxide film on the surface of the aluminum powder particles (does not participate in the combustion reaction) accounts for a relatively large proportion. For example, the aluminum oxide film on the surface of the aluminum powder with a particle size of 38nm can account for u...

AI Technical Summary

Problems solved by technology

[0006] Laser ignition temperature is high, but due to high cost and complex system, it is generally rarely used

Aiming at the ignition problem of metal fuels such as micron aluminum powder and micron magnesium powder reacting with liquid water, the present invention proposes a new ignition method, which can realize reliable ignition of the mixture

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