Coaxial double tube type Coriolis flowmeter
US5691485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/849
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a Coriolis flowmeter which is capable of detecting a mass flow and a density of fluid with an increased stability by resonantly oscillating a double tube portion consisting of an inner flow tube allowing fluid to flow therein and a coaxially disposed thereon counterbalance tube provided with a weight for equalizing the lateral natural frequency of the counterbalance tube with that of the flow tube. The Coriolis flowmeter has supporting metal means for supporting the both ends of the flow tube in such a way that the both ends of the flow tube is restricted in radial directions and axially movable in respective connecting flange; the inner flow tube has extending ends enlarged in diameter and supported in the respective connecting flanges of the outer housing. The flow tube is further supported at near-to-end portions on respective rectangle leaf springs having a plane parallel to oscillating direction and extending in radial direction of the double tube portion being perpendicular to the oscillating direction within the outer housing. The flow tube is thus supported at four stable points representing oscillating nodes, axially movable but radially restricted, assuring s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.