Oval Corporation

Amane Factory Inc.

Jun Tanimoto

Naoki Matsubara

Shingo Mori

Kenichi Takai

Minoru Oomura

Shinsuke Imai

Yoshitake Saito

Hiroaki Tanno

Massaging tool

A purge type vortex flowmeter capable of accurately measuring a flow rate of fluid over a wide range by reliably detecting the number of vortexes produced. A purge type vortex flowmeter which comprises a vortex generator () mounted in a passage of fluid to be measured in a flow pipe (), two conduits () having pressure ports () in both side surfaces of the vortex generator for communication with the outside thereof and a front conduit () having a pressure port () in the front surface of the vortex generator. Purge fluid from a purge supply source is fed by a purge introducing means through a tube (), the conduits () and the front conduit () into a flow of fluid to be measured in the flow pipe. Purge streams alternatively fluctuating by the effect of a difference from a fluctuating vortex pressure are discharged from the conduits () through their pressure ports (). The fluctuations of the purge streams are detected by sensors (heat-sensitive elements ()) mounted in the conduits (). The purge fluid to be discharged through the pressure port () varies its flow in accordance with the flow of the fluid to be measured in the flow pipe (), thereby achieving automatic control of the purge flow to the sensor portion.

Purge type vortex flowmeter

A vortex flowmeter detector is attached to or detachable from a vortex generation body for measurement of flow rate. The vortex flowmeter detector comprises a cylindrical oscillation tube having a bottom and a vortex detection part which is fixed by a fixing flange of the oscillation tube, wherein the oscillation tube is detachably inserted into a hole which is open to the vortex generation body at one end thereof, and the oscillation tube is fixed by a flange. An alternate pressure caused by a Karman vortex is introduced from both sides of the vortex generation body into the hole so as to oscillate the oscillation tube. This oscillation is received by a spring plate by way of an element cover, and it is transmitted to piezoelectric elements which are stuck to two chamfers of an elastic base material.

Vortex flow meter detector and vortex flow meter

Growing community of inventors

Tokyo, Japan

Jun Tanimoto