Study on Flow Straightening of Turbine Flowmeter

At first, the effect of axial velocity distribution of the pipe flow entering the rotor on the metering accuracy of a turbine flowmeter was studied theoretically and experimentally. An analysis of the relation between the revolution speed of rotor and the velocity distribution was presented. Charact...

Full description

Saved in:
Bibliographic Details
Published in:Bulletin of JSME 1978, Vol.21(157), pp.1152-1159
Main Authors: AKAIKE, Shiro, TOYOKURA, Tomitaro, SUGIYAMA, Shigeo, AMEMORI, Hiroyuki
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:At first, the effect of axial velocity distribution of the pipe flow entering the rotor on the metering accuracy of a turbine flowmeter was studied theoretically and experimentally. An analysis of the relation between the revolution speed of rotor and the velocity distribution was presented. Characteristics of the meter set behind a bend or an orifice were measured and the deviation of metering accuracy due to the difference of upstream velocity profiles was discussed. Secondly, a multi-tube flow straightener was proposed to reduce the errors caused by distorted velocity profiles downstream of a single bend. Then, it is shown that a metering accuracy better than ±0.2% could be attained by using a flow straightener assembly of the overall length of 10 pipe diameters preceding the meter.
ISSN:0021-3764
1881-1426
DOI:10.1299/jsme1958.21.1152