CONTROL DEVICE FOR PREVENTING VIBRATION OF ROTOR STAGE OF GAS TURBINE ENGINE

PROBLEM TO BE SOLVED: To provide a device which minimizes or eliminates vibration of a moving blade of a rotor stage of a gas turbine engine. SOLUTION: This device 20 has a high pressure gas source 48 and a plurality of holes 50 for distributing the high pressure gas. A rotor stage 34 is rotated by...

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Bibliographic Details
Main Authors MATHENY A PAUL, EL-AINI YEHIA M, BENEDICT BARRY K, BAGHDADI SAMY
Format Patent
LanguageEnglish
Published 25.05.1999
Edition6
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
STEAM ENGINES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a device which minimizes or eliminates vibration of a moving blade of a rotor stage of a gas turbine engine. SOLUTION: This device 20 has a high pressure gas source 48 and a plurality of holes 50 for distributing the high pressure gas. A rotor stage 34 is rotated by center gas streams 24 distributed in a circumferential direction, having first and second areas. The gas streams in the first and second areas, are flowed respectively with first and second velocities. The first velocity is actually faster than the second velocity. The holes 50 for distributing the high,pressure gas are selectively formed on an upstream side of the a moving blade, and aligned in the second area. The high pressure gas, flowed out of the holes 50, enter the second area. It is thus possible to increase velocity of center gas stream in the second area, while acutally reduce difference the velocities of the center gas streams between the first and second areas.
Bibliography:Application Number: JP19980260997