F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
F04D 29/00 (2006.01) F04D 27/02 (2006.01) F04D 29/46 (2006.01)
Patent
CA 2149576
A surge detection device for quick and accurate detec- tion of surge is presented and its application to a turbomachinery is demonstrated. The turbomachinery 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 the 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 turbomachinery. The onset of surge is prevented by adjusting the angle of the diffuser vanes in accordance with the sampling duration for parameter fluctua- tions over the measuring interval of time, and by adjusting the diffuser vanes to maintain the operating parameter fluctu- ations of the fluid machinery below a threshold value of the turbomachinery derived from the design flow rate of the tur- bomachinery. Application of the surge detection device in combination with fluid flow guide vanes and blades of the turbomachinery enables full utilization of the potential capability of the turbomachinery.
Harada Hideomi
Konomi Shin
Takei Kazuo
Ebara Corporation
Riches Mckenzie & Herbert Llp
LandOfFree
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