Method for determining a mass flow of a fluid flowing in a pipe
US7007556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2003 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Mar 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/88
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method wherein vortices are produced in a flowing fluid by means of a bluff body and the repetition frequency with which the vortices are produced is determined. The repetition frequency is used to determine a flow rate measurement value, which represents a volume flow or a flow velocity. Additionally, pressures p1 and p2 acting in the flowing fluid at two measurement points separated from one another in the flow direction are registered. At least one of these pressures changes at least as a function of the repetition frequency. The registered pressures p1, p2 are used to produce a pressure measurement value, which represents an average dynamic pressure acting in time average at least partly in the flow direction. The pressure measurement value and the flow rate measurement value are used to determine a mass flow rate value for the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.