An easy-to-fill powder fluidization device

Abstract

The invention provides an easy-to-fill powder fluidizing device for powder rocket engine fuel supply and a method for filling and feeding fuel powder using the device. A piston is pulled to the frontend of a storage tank by using a motor connected with a piston rod, so that the hollow metal pipe connected with the piston is contacted with a front panel, the piston rod is detached from the piston(without being detached from a transmission device), a hopper is inserted into the hollow metal pipe through the through hole of the front panel and is threaded with the piston, the powder is added from the hopper to the storage tank and the powder enters the storage tank through the through hole of the central axis of the piston. After the fuel is filled, the hopper is dismounted, the piston rodis screwed into the piston, so that the filling of the fuel is achieved, the air source and motor are started, the fluidizing gas enters the storage tank to blow the powder through a hose, the powderenters a fluidization cavity in the form of gas-solid two-phase flow under the action of pneumatic driving and piston driving, the powder is fluidized and enters a combustion chamber under the disturbance of lateral air intake.

Description

technical field [0001] The invention belongs to the field of fuel supply for powder rocket motors, in particular to an easy-to-fill powder fluidization device. Background technique [0002] Al / AP (aluminum / ammonium perchlorate) powder rocket engine is a rocket engine that uses ultra-fine aluminum powder as fuel and ammonium perchlorate as oxidant. The powder fluidization device is one of the components of the entire system. The propulsion cooperates with the high-speed airflow to send the powder in the storage tank into the combustion chamber for mixed combustion, and the flow rate is changed by changing the piston propulsion speed and the fluidization gas flow speed to achieve the effect of adjustable thrust. Al / AP powder rocket motor can carry oxidant and fuel, so it can work in vacuum, and has a good application prospect in the field of aerospace. [0003] The powder supply technology is one of the core technologies of the Al / AP powder rocket engine. The continuous, stab...

AI Technical Summary

Problems solved by technology

The existing fluidization device has the feature of adjustable flow rate, but fuel needs to be filled in the storage tank in advance. The closed structure of the structure brings inconvenience to refilling the fuel, and the connection part between the fluidization chamber and the storage tank needs to be disassembled for filling. At the same time, the fluidization effect and powder delivery efficiency of the existing device are not ideal

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