| 摘要 |
The present invention relates to a semi-active vortex-type flowmeter, comprising a vortex generator provided in a transfer pipe with a measured fluid flowing inside; and a vibrator to generate a wake in the measured fluid of low flow velocities on the rear side of the vortex generator by being inserted in the transfer pipe to move the vortex generator in reciprocation. Unlike conventional techniques, the present invention can accurately detect flux by using the vortex-type flowmeter even in low-flux regions through the use of the principle to obtain a flow velocity by vibrating in reciprocation the vortex generator in a direction perpendicular to the flowing direction and measuring a resonance frequency generated in the wake of an object. |
