Volume flowmeter and method for determining a volumetric flow rate
US12287229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Jan 25, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An aspect of the present invention pertains to a method for determining the volumetric flow rate of a compressible fluid flow flowing through a volume flowmeter having a flow inlet, a wheel downstream of the flow inlet and a constriction downstream of the flow inlet and upstream of the wheel, the compressible fluid flowing through the flow inlet and actuating the wheel. The method comprises measuring the rotational speed of the wheel and determining the permanent pressure loss across the wheel based on the measured rotational speed. The method further comprises measuring the fluid pressure of the compressible fluid flow at the flow inlet and determining whether the compressible fluid flow in the volume flowmeter is in the subsonic or in the supersonic regime based on the determined permanent pressure loss and the measured fluid pressure. The method also comprises measuring the fluid temperature of the compressible fluid flow at the flow inlet and determining the volumetric flow rate of the compressible fluid flow based on the determined permanent pressure loss, the measured fluid pressure, the regime of the compressible fluid flow and the measured fluid temperature. Other aspects o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.