Measuring and testing – Fluid pressure gauge – With fluid pulsation dampener
Patent
1998-08-12
2000-04-25
Oen, William
Measuring and testing
Fluid pressure gauge
With fluid pulsation dampener
G01L 700
Patent
active
060530480
ABSTRACT:
In a pressure-measuring device (10) for measuring pressure fluctuations in a space (15) which is filled with hot gases at a first temperature (T1) and is delimited by at least one wall (12, 14) from an outer space (28) which is at a lower second temperature (T3), in particular for measuring pressure fluctuations in the combustion chamber (15) of a gas turbine (11), a measuring tube (16) largely free of end reflections with regard to the pressure fluctuations is passed from the space (15) through the at least one wall (12, 14) into the outer space (28), and, in the outer space (28) behind the at least one wall (12, 14), a pressure sensor (18) for sensing the pressure fluctuations is connected to the measuring tube (16, 21, 23). In such a pressure-measuring device (10), a high measuring accuracy is achieved in a simple manner owing to the fact that provided on the measuring tube (16) are first means which prevent disturbing reflections of the pressure waves, spreading in the measuring tube (16), at jumps in temperature in the measuring tube (16) or render said reflections harmless before entry into the pressure sensor (18).
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Asea Brown Boveri AG
Oen William
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