CYLINDER FOR COMBUSTOR, COMBUSTOR, AND GAS TURBINE

摘要

A cylinder for a combustor provided with a cylindrical member, a first cooling passage and a second cooling passage formed in the cylindrical member, and a supply port extended portion. The first cooling passage includes a supply port that opens to an outer peripheral surface of the cylindrical member. The second cooling passage includes a discharge port that opens to the outer peripheral surface of the cylindrical member downstream of the supply port. The supply port extended portion includes a first wall portion disposed between the supply port and the discharge port extending away from the outer peripheral surface of the cylindrical member and a second wall portion disposed upstream of the supply port extending away from the outer peripheral surface of the cylindrical member.

主权项

1. A cylinder for a combustor through which a combustion gas flows configured to send the combustion gas to a turbine, the cylinder for a combustor comprising:
a cylindrical member extending along an axis; a first cooling passage formed in an upstream region located upstream in a flow direction of the combustion gas of a wall portion of the cylindrical member, the first cooling passage including a supply port that opens to an outer peripheral surface of the cylindrical member and being configured to cool the upstream region via a first cooling fluid introduced from a space outside of the cylindrical member via the supply port; a second cooling passage formed in a downstream region located downstream in the flow direction of the combustion gas of the wall portion of the cylindrical member next to the upstream region, the second cooling passage being configured to cool the downstream region via supplied second cooling fluid and including a discharge port that opens to the outer peripheral surface of the cylindrical member downstream of the supply port in the flow direction of the combustion gas and is configured to discharge the second cooling fluid to the space outside of the cylindrical member; and a supply port extended portion including a first wall portion disposed between the supply port and the discharge port extending in a direction away from the outer peripheral surface of the cylindrical member, and a second wall portion disposed upstream of the supply port in the flow direction of the combustion gas, the second wall portion extending in a direction away from the outer peripheral surface of the cylindrical member.