Metal powder fuel supply device based on overpressure sealing

Abstract

The invention aims at providing a metal powder fuel supply device based on overpressure sealing. A piston and transmission assembly driven by a motor is arranged at the upper end of a nanometer metal powder grain, and an annular nozzle is arranged at the edge of the piston and the transmission assembly. An annular gas collecting cavity is formed between a piston and the wall. A plurality of sealing rings are arranged between the annular gas collecting cavity and the external. An annular fluidization chamber is formed inside the piston and formed in the manner that an upper workpiece is connected with a lower workpiece through bolts. By means of the metal powder fuel supply device, the influences, caused when all metal powder is pushed by a piston for feeding and fluidization, on normal running and stable feeding of a system can be avoided; the difference between the gas pressure inside the annular nozzle and the gas pressure outside the annular nozzle forms overpressure sealing, and nanometer metal powder can not reflux to permeate upwards into the edge of the piston; due to a clean gap of the piston, the replacement frequency of the sealing rings is reduced, abrasion of the wall of the piston is reduced, and the environment is created for use of lubricating oil; and the nanometer metal powder is mainly used, and it can be avoided that metal particles are preheated and pre-burnt during fluidization to improve burning stability.

Description

technical field [0001] The invention relates to a metal powder fuel supply device. Background technique [0002] At present, underwater vehicle engines need to carry oxidizers themselves, resulting in low charge combustion efficiency. With the continuous advancement of science and technology, it is very urgent to achieve higher combustion efficiency with limited charges. Compared with the traditional propulsion method, there is no oxidant to be carried, and the oxygen-enriched combustion that uses a large amount of external water as the oxidant increases the combustion efficiency. [0003] The patent application with the publication number CN102644932A, the metal powder fuel supply device uses a piston to push the metal powder grain. This metal powder propulsion technology is still in the laboratory stage, and the difficulty of supplying several tons of tens of tons of metal powder has not been considered. , all use pistons to push all metal powders into the fluidized feed...

AI Technical Summary

Problems solved by technology

[0003] The patent application with the publication number CN102644932A, the metal powder fuel supply device uses a piston to push the metal powder grain. This metal powder propulsion technology is still in the laboratory stage, and the difficulty of supplying several tons of tens of tons of metal powder has not been considered. , all use pistons to push all metal powders into the fluidized feed, once used in practical applications, it will seriously affect the normal operation of the propulsion system and stable feeding

At the same time, nano-metal materials have caused huge troubles for storage and transportation due to their air suspension, gap permeability, and permanent toxicity, and have become the biggest bottleneck solved by this system.

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