Measuring and testing – With fluid pressure – Leakage
Patent
1978-08-17
1980-01-08
Goldberg, Gerald
Measuring and testing
With fluid pressure
Leakage
73 4R, G01M 326
Patent
active
041821580
ABSTRACT:
A method and apparatus for pressure testing the static pressure orifices and associated connections used in wind tunnels. A cylindrical module, having in one end an open hemispherical calibration pressure chamber separated from and surrounded by an annular vacuum chamber, is placed over the orifice of the system to be tested. O-rings ensure seating and a vacuum seal between the chambered end of the module and the surface around the orifice: one O-ring separates the two chambers and another separates the outer chamber from the outside environment. Ports lead from each of the chambers out the other end of the module to tubes connected to a control box consisting of calibration pressure and vacuum supply lines, bleeder valves, and guages. The calibration pressure supply may be above or below atmospheric pressure. The vacuum chamber is evacuated to seat the module and seal off the system, the center chamber is pressurized, and the control box pressure guage is monitored for changes which would indicate leaks in the system. Comparison against the control box pressure guage allows for calibration of the orifice system pressure receiving guage.
REFERENCES:
patent: 3518870 (1970-07-01), Shubert et al.
Culotta Randolph F.
Posey Donald L.
Goldberg Gerald
Manning John R.
Nelson Wallace J.
Osborn Howard J.
Roskos Joseph W.
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