Combustor head plate assembly with impingement

摘要

Combustor for a turbine having a housing in which an air collecting chamber, a combustion antechamber, and a combustion chamber are formed. A combustor head plate is arranged in the housing so that the combustor head plate separates the combustion antechamber from the combustion chamber. A baffle plate is arranged in the combustion antechamber so that the baffle plate divides the combustion antechamber into a first sub-chamber adjoining an air supply fluidically connected with the air collecting chamber and a second sub-chamber adjoining the combustor head plate. Wherein baffle plate has a plurality of through-passages that fluidically connect the first sub-chamber with the second sub-chamber so that air that has flowed into the first sub-chamber from the air collecting chamber via the air supply can flow into the second sub-chamber via the through-passages and to a back surface of the combustor head plate facing the second sub-chamber.

主权项

1. A combustor for a gas turbine engine, comprising:
a housing having an air collecting chamber, a combustion antechamber, and a combustion chamber, the combustor chamber defined radially by a flame tube and at an upstream end by a casing part and a combustor head plate; the combustor head plate arranged in the housing to separate the combustion antechamber from the combustion chamber; a baffle plate arranged in the combustion antechamber substantially parallel to the combustor head plate and configured to divide the combustion antechamber into a first sub-chamber adjoining an air supply which is fluidically connected with the air collecting chamber and a second sub-chamber adjoining the combustor head plate, the baffle plate comprising a plurality of through-passages that fluidically connect the first sub-chamber with the second sub-chamber so that air that has flowed into the first sub-chamber from the air collecting chamber via the air supply flows into the second sub-chamber via the through-passages and flows to a back surface of the combustor head plate facing the second sub-chamber; a gap arranged at an outer circumference of the combustor head plate, between the combustor head plate and the casing part, the gap fluidically connecting the second sub-chamber with the combustion chamber; and a swirl body located axially between the casing part and the flame tube and configured to inject air radially inward from the air collecting chamber and into the combustion chamber.