Control of flow in shell

TLDR: In this article, the authors proposed a method to automatically settle the dynamic pressure efficiently within a short time by generating a desired dynamic pressure in a shell correcting revolutions based on a difference from the desired value.

Abstract: PURPOSE:To automatically settle the dynamic pressure efficiently within a short time by generating a desired dynamic pressure in a shell correcting revolutions based on a difference from the desired value CONSTITUTION:The relationship q=KeN is determined between the revolutions (n) and the dynamic pressure (p) of a blower without a sample placed in a shell as shown by the straight line (m) and inputted into an electronic computer in the control system A dynamic pressure qset to be set is inputted to calculate revolutions n1 of the blower from the formula 1 When the difference between q1 and the set dynamic pressure qset is larger than the allowable errors of the dynamic pressure with the revolutions set at n1 (point a1), the revolutions n2 is calculated by the formula 2 and set to measure the dynamic pressure q (point a2) When the value q2 gives a large difference from the set dynamic pressure qset, the revolutions n3 of the blower are calculated by the formula 3 and set to measure the dynamic pressure q3 (point a3) The dynamic pressure q3 reaches the set dynamic pressure qset