Surge detection device and turbomachinery therewith

Details Surge detection device and turbomachinery therewith Surge detection device and turbomachinery therewith

1997-07-18

1999-06-15

Williams, Hezron

Measuring and testing

Volume or rate of flow

Using differential pressure

73199, 73115, G01F 138, G01L 300

Patent

active

059132485

ABSTRACT:
A turbomachine having variable-angle diffuser vanes operates by regulating the angle of the diffuser vanes on the basis of the sensors disposed on the pump body or pipes of a surge detection device. The onset of surge can be forecast by measuring the fluctuations in the operating parameter(s) over a measuring interval of time computed on the basis of the operating characteristics of the impeller of the turbomachine. The onset of surge is prevented by adjusting the angle of the diffuser vanes in accordance with the sampling duration for parameter fluctuations over the measuring interval of time, and by adjusting the diffuser vanes to maintain the operating parameter fluctuations of the fluid machinery below a threshold value of the turbomachine derived from the design flow rate of the turbomachine. Application of the surge detection device in combination with fluid flow guide vanes and blades of the turbomachine enables full utilization of the potential capability of the turbomachine.

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