Device for measuring the static pressure of a moving fluid

Details Device for measuring the static pressure of a moving fluid Device for measuring the static pressure of a moving fluid

1977-11-04

1979-02-06

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With fluid pulsation dampener

73189, G01L 700, G01W 102

Patent

active

041377818

ABSTRACT:
A directional device operating similar to a wind vane has a hollow vertical shaft which is journalled in a housing containing three chambers in communication. An air inlet port is located on the side of the directional vane and communicates through the hollow journalled shaft into the first chamber. A small aperture in the wall between the first and second chambers dampens the movement of the fluid flow from chamber 1 to chamber 2. A conventional baffle separates the second and third chambers and simultaneously allows fluid flow from the second to the third chamber while further damping the fluid flow to such a point that the fluid in the third chamber is substantially static. The third chamber is in communication with a differential pressure gauge which then compares the static pressure in chamber 3 with another pressure source. Because the air inlet port is always maintained perpendicular to the wind direction, pulsations and surges of air pressure through the air inlet port caused by wind shifts are greatly reduced, and the fluid is damped twice before entering the third chamber as a static fluid.

REFERENCES:
patent: 1694838 (1928-12-01), Bayha
patent: 2486133 (1949-10-01), Egger
patent: 2662402 (1953-12-01), Ince, Jr. et al.

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