Method and device for measuring powder mass flow of powder engine

• Main Authors: HU CHUNBO, HU JIAMING, YANG JIANGANG, LEI RONG, WEI RONGGANG
• Format: Patent
• Language: Chinese; English
• Published: 04.10.2022
• Subjects: MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; PHYSICS; TESTING

The invention discloses a method and device for measuring the mass flow rate of powder of a powder engine, and the method comprises the following steps: a powder box is connected with a collection container through a pipeline, the powder box is filled with metal powder, fluidizing gas is filled, and the gas carries the metal powder to enter the collection container; measuring the initial mass mp0 of the metal powder; the pressure intensity and the gas volume of the gas in the powder box are measured to be P1 and Vg1 respectively; the pressure intensity and the gas volume in the collection container are P2 and Vg2 respectively; the mass flow rate of the gas is a formula for obtaining the mass flow rate of the powder in the collecting container, wherein P '1 and P' 2 in the formula are respectively derivatives of P1 and P2 to t; r1 is the radius of the circular section of the powder box; v is the displacement speed of the piston, and V1 and V2 are the volumes of the powder box and the collecting container respe