Rotary kinetic fluid motors or pumps – Method of operation
Reexamination Certificate
2011-01-18
2011-01-18
Verdier, Christopher (Department: 3745)
Rotary kinetic fluid motors or pumps
Method of operation
C415S013000, C415S017000, C415S026000, C415S047000, C415S116000, C340S606000, C340S609000, C340S611000, C340S612000, C340S603000, C702S024000, C702S026000, C702S027000, C702S029000, C702S030000, C702S031000, C702S032000, C702S046000, C702S050000, C702S114000, C702S127000, C702S128000, C702S182000, C702S183000, C702S187000, C702S189000, C073S023330
Reexamination Certificate
active
07871237
ABSTRACT:
A method and system for monitoring a gas turbine engine (20) to predict maintenance requirements. Particles suspended in a gas flow (24, 32) of the engine (20) are monitored and quantified to predict a particle accumulation rate. Monitoring may be done using particle flow sensors (61-63) in a diverted portion (33) of the working gas flow (24), such as in the cooling gas flow (32). Particle sampling (S1-S3) may be done to determine particle size and composition distributions. Particle mass flow rates may then be continuously monitored per engine operating condition, and compared to predetermined values such as a normal upper limit per engine operating condition. An integrated particle mass flow may be used in conjunction with an instantaneous mass flow rate to predict a maintenance requirement. Multiple locations (L1-L3) may be monitored to recognize a maintenance requirement by flow section or component.
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“On-line Particle Sizers” “Achieving your process vision” , ref: MRK397-01; [online]; [unknown retrieval date];8 pages; Retrieved from http://www.malvern.co.uk/common/downloads/Malvern—Process—Systems—Brochure—2002.pdf ; Malvern Instruments, Ltd, Malvern, Worcestershire, United Kingdom.
Bunce Richard H.
Dovali-Solis Francisco
Siemens Energy Inc.
Verdier Christopher
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