Apparatus for measuring liquid flow
US4325262A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Jun 4, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/662
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for ultrasonically determining fluid flow passing through a measurement section includes a tube which has two ends and an average predetermined inner cross-sectional area; the tube constitutes the measurement section. A sound-emitting transducer is disposed near one end of the tube, which has a first sound-transfer surface, and a sound-receiving transducer disposed near the other end of the tube, which has a second sound transfer surface. Each sound transfer surface is disposed at a sufficiently large predetermined distance from a corresponding end of the tube, so as to permit the fluid flowing through the tube. A fluid-receiving chamber communicates with the one end of the tube, and has a first average cross-sectional area, and a fluid-discharge chamber communicates with the other end of the tube, and has a second average cross-sectional area. The tube extends through the chambers, and each of the first and second cross-sectional areas exceeds the inner cross-sectional area by a factor of at least two. At least one of the chambers surrounds a corresponding end of the tube along at least a portion of the tube exceeding the average inner width thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.