Gas turbine annular combustor having a first converging volume and a second converging volume, converging less gradually than the first converging volume
AssigneeUnited Technologies Corporation
InventorsSteven W. Burd, Albert K. Cheung, John T. Ols, Reid D. Smith, Irving Segalman
Life of this patent
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Abstract
A gas turbine engine combustor has inboard and outboard walls. A forward bulkhead extends between the walls and cooperates therewith to define a combustor interior volume. In longitudinal section, a first portion of the combustor interior volume converges from fore to aft and a second portion, aft of the first portion converges from fore to aft more gradually than the first portion.
Claims20
A gas turbine engine combustor comprising:
- an inboard wall;
- an outboard wall;
- and
- a forward bulkhead extending between the inboard and outboard walls and cooperating therewith to define a combustor interior volume,
- wherein, in longitudinal section, a first portion of the combustor interior volume converges from fore to aft and a second portion of the combustor interior volume, aft of the first portion, converges from fore to aft more gradually than the first portion.
A gas turbine engine combustor comprising:
- an inboard wall;
- an outboard wall;
- and
- a forward bulkhead extending the inboard and outboard walks and cooperating therewith to define a combustor interior volume,
- wherein, at least one of the inboard wall and the outboard wall has a first portion and a second portion aft of the first portion, the second portion at a longitudinal interior angle to the first portion of between 185° and 210°.
A method for engineering a gas turbine engine combustor having an inboard wall, an outboard wall, and a forward bulkhead extending the inboard and outboard walls and cooperating therewith to define a combustor interior volume, wherein, in longitudinal section, a first portion of the combustor interior volume converges from fore to aft and a second portion of the combustor interior volume, aft of the first portion, converges from fore to aft more gradually than the first portion, the method comprising:
- selecting a degree of convergence of the first portion so as to provide a desired low first portion residence time;
- and
- selecting a degree of convergence of the second portion in combination with selecting introduction parameters for process air so as to provide a desired low generation of NOx.
A gas turbine engine combustor comprising:
- an inboard wall;
- an outboard wall;
- and
- a forward bulkhead extending between the inboard and outboard walls and cooperating therewith to define an annular combustor interior volume,
- wherein, in longitudinal section, a first portion of the combustor interior volume converges from fore to aft and a second portion of the combustor interior volume, aft of the first portion, converges from fore to aft more gradually than the first portion.
Dependencies are inferred from the claim text.