High-precision pressure sampling head of pitot tube flow sensor
US9335191B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 2015 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Mar 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Present invention provides a high-precision pressure sampling head used in a Pitot tube flow sensor. The pressure sampling head includes a cylindrical pressure sampling head body. The cylindrical pressure sampling head body contains a total pressure channel and a static pressure channel. The axis of the total pressure channel and the axis of the static pressure channel are parallel to the axis of the cylindrical pressure sampling head body. Two inclined surfaces are formed on two opposite sides of the lower end of the cylindrical pressure sampling body. A first inclined surface intersects with the total pressure channel and thus a total pressure sensing hole is formed on the first inclined surface. A second inclined surface intersects with the static pressure channel and thus a static pressure sensing hole is formed on the second inclined surface. An angle α formed between the first inclined surface and the axis of the cylindrical pressure sampling head body is smaller than the angle β formed between the second inclined surface and the axis of the cylindrical pressure sampling head body. Based on experimental results, when measuring the volume flow rate of a liquid in a pipe or con…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.