Measuring and testing – With fluid pressure – Dimension – shape – or size
Patent
1978-04-12
1979-07-03
Queisser, Richard C.
Measuring and testing
With fluid pressure
Dimension, shape, or size
G01B 1312
Patent
active
041596366
ABSTRACT:
An apparatus for continuously monitoring clearances between a moving and a stationary machine part, utilizing compressible fluid flow. A measuring nozzle is disposed in the clearance space, and a conduit connects said nozzle with a space having a compressible fluid pressure different from the pressure in the clearance space. A measuring orifice is disposed along the conduit path. First and second comparison nozzles are situated in a pressure chamber and coupled through conduits to the same pressure space as that to which the conduit of the measuring nozzle is coupled. Measuring orifices are also situated in the conduits coupled to the comparison nozzles. Differential pressure meters are coupled between the conduit of the measuring nozzle and a conduit of one of the comparison nozzles; and between the conduits of the two comparison nozzles. The readings of the differential pressure meters are functions of both pressure variations in the clearance space and the clearance dimension, and the clearance dimension can be determined by processing the meter readings.
REFERENCES:
patent: 3754433 (1973-08-01), Hyer
Jicha Jan
Kopecek Karel
Langer Bretislav
Prvni Brnenska Strojirna, Narodni Podnik
Queisser Richard C.
Roskos Joseph W.
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