Patent ID: 6058709
Filing Date: 2000-05-09
Classification: F02C,F05D,F23D,F23M,F23N

Abstract:
A dynamically balanced fuel nozzle for reducing the amplitude of pressure oscillations in a combustion system, comprising:a nozzle body;a primary fuel delivery means connected to said nozzle body that generates multiple fuel pockets through a dynamic response to the pressure oscillations to counteract said oscillations in the combustion system wherein said fuel delivery means comprises:a primary fuel-supply line that splits downstream of the fuel source into a first fuel-delivery line and a second fuel delivery line;the first fuel-delivery line is connected to a first fuel port located on the nozzle body;the second fuel-delivery line is connected to a second fuel port located on the nozzle body at a position about 180 degrees radially opposite the first fuel port, wherein the first fuel port and second fuel port are present in a pair at about the same axial location on the nozzle body;said first fuel port contains an orifice located at a distance away from the nozzle body such that a pocket of fuel is provided at a specific phase angle in response to the pressure oscillations in the combustion system; andsaid second fuel port contains an orifice located at a greater distance away from the nozzle body such that a pocket of fuel is provided at a phase angle about 180 degrees apart from that provided by the first fuel port;an oxidizer delivery means connected to said nozzle body.