Back to results
US 6,546,810 B1Granted
Process and device for measuring the velocity of flow of a fluid stream
AssigneeInstitut Francais du Petrole
InventorsClaude Beauducel, Thierry Lepage
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeInstitut Francais du Petrole
InventorsClaude Beauducel, Thierry Lepage
Estimating the term…
A process and device for measuring the velocity of flow of a fluid stream by measuring the difference between the respective traveltimes of acoustic pulses emitted by means of a generator (G) respectively between two points (PA, PB) spaced out along the fluid stream, according to whether they are propagated upstream or downstream in relation to the direction of flow, a difference that is indicative of the displacement velocity of the fluid stream. Measurement of this traveltime difference comprises using an acquisition unit (A) coupled to a processing unit (P) allowing determination of the frequency spectrum of each pulse and measurement of the phase lag affecting at least part of the frequency spectrum of each pulse, resulting from the traveltime thereof. Measurement of the velocity of flow of the fluid stream and of the resulting flow rate is very accurate. The process can be applied in chemical industries, chromatography, etc.
In a process for determining velocity of flow of a fluid stream by comparison of respective traveltimes of acoustic pulses emitted and received respectively between spaced apart points along the fluid stream, according to whether the acoustic pulses are propagating upstream or downstream in relation to a direction of flow of the fluid stream, a process comprising:
A device for determining velocity of flow of a fluid stream comprising:
In a process for determining velocity of flow of a fluid stream by comparison of respective traveltimes of acoustic pulses emitted and received respectively between spaced apart points along the fluid stream, according to whether the acoustic pulses are propagated upstream or downstream in relation to a direction of flow, comprising:
Dependencies are inferred from the claim text.