A METHOD OF MEASURING THE FLOW BASED ON THE ACTION OF A REACTION FORCE AND A REACTION FLOWMETER PERFORMED ACCORDING TO THE METHOD THEREOF

摘要

The method of the flow measurement and the reaction flowmeter, according to the invention require the realization of two very simple specific configurations of reaction flowmeters. A first configuration is made up by association between a Reference block BR made in the form of a fixed vertical cylindrical access tube and a Sensitive block BS made either as a horizontally mobile tube curved at 90°, or as a horizontal drum, provided with two diametrically opposed tangential nozzles with opposite discharge outflows through which passes the flow of the measuring fluid. The mobile tube or the mobile drum is provided with a circular orifice in which it enters the fixed vertical circular tube, for the fluid access into the flowmeter, the orifice allowing the horizontal mobile elements to rotate freely relative to the vertical fixed tube respectively to its symmetry axis under the action of the reaction force generated at the fluid outlet, proportional to its flow rate. This mobile tube or mobile drum is referred to as the mobile reaction element, and the achieved flowmeter is referred to as the reaction flowmeter with mobile parts.;In a second configuration, called reaction flowmeters without moving parts, the Reference block BR is made up by a fixed horizontal tube and the Sensitive block ES is made up as curved quasi-immobile tube, considered as reaction elements without moving parts. At the output of the Sensitive Block, it is obtained as an intermediate parameter, in the case of the flowmeter with moving parts, either the pushing forces causes by the angular displacement or the rotation frequency of the mobile tube or drum, and in the case of the flowmeter without moving parts, either a torque or a differential pressure drop, as the case may be, parameters which are then processed in the secondary element ES containing at the inlet a force sensor or a proximity sensor for the reaction flowmeters with moving parts, or o moment sensor or a differential pressure sensor, as the case may be, for the reaction flowmeters without moving parts. The related electrical signals are entered into the Electronic block for processing, calculation and rendering of the measured flow rate.