Combustor dilution bypass method

The present invention provides a valve and a low pressure drop combustor bypass. The valve simultaneously controls both the supply of air to the premixer and the amount of air directed into a large bypass duct. Air entering the bypass duct is reintroduced into the gas flowpath as dilution air downst...

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Bibliographic Details
Main Authors LENERTZ JAMES, LAWRENCE KYLE
Format Patent
LanguageEnglish
Published 30.01.2001
Edition7
Subjects
ACTUATING-FLOATS
AIR INTAKES FOR JET-PROPULSION PLANTS
AIR SUPPLY
BLASTING
COCKS
COMBUSTION APPARATUS
COMBUSTION ENGINES
COMBUSTION PROCESSES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
DEVICES FOR VENTING OR AERATING
DRAUGHT-INDUCING
ENGINEERING ELEMENTS AND UNITS
GAS-TURBINE PLANTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:The present invention provides a valve and a low pressure drop combustor bypass. The valve simultaneously controls both the supply of air to the premixer and the amount of air directed into a large bypass duct. Air entering the bypass duct is reintroduced into the gas flowpath as dilution air downstream of the combustion zone. At low power settings the valve directs most of the air to the bypass duct, in effect bypassing the fixed area dilution ports, whereby the pressure drop across the combustor may be controlled at an optimal level.
Bibliography:Application Number: US20000517785