Gas turbine combustor equipped with heat-transfer device

摘要

An object of the present invention is to provide a gas turbine combustor that can suppress an increase in pressure loss while improving product reliability. The gas turbine combustor includes a combustor liner, an air transfer casing installed on the outer circumference of the combustor liner, the combustor liner and the air transfer casing defining an annular passage therebetween adapted to allow a heat-transfer medium to flow therethrough, and a plurality of vortex generating devices disposed on an inside surface of the air transfer casing, the vortex generating devices generating longitudinal vortices each having a rotational axis extending in a flow direction of a heat-transfer medium. The plurality of vortex generating devices are arranged in paired manner, with each pair of devices generating vortices having rotational directions opposed to each other.

主权项

1. A gas turbine combustor comprising:
a combustor liner; an air transfer casing disposed on an outer circumference side of the combustor liner, the combustor liner and the air transfer casing defining an annular passage therebetween adapted to allow a heat-transfer medium to flow therethrough; and a plurality of vortex generating devices disposed on an inside surface of the air transfer casing, the vortex generating devices each generating longitudinal vortices each having a rotational axis extending in a flow direction of the heat-transfer medium; wherein the plurality of vortex generating devices are arranged in a paired manner, with each pair of vortex generating devices generating the vortices so that the vortices have rotational directions opposed to each other; and wherein each of a plurality of impingement jet cooling holes is formed in the air transfer casing downstream of the vortex generating devices with respect to the flow of the heat-transfer medium, is disposed between paired devices of the vortex generating devices corresponding to the impingement jet cooling hole, and is positioned so that a direction of a jet flow of the heat transfer medium flowing from the impingement jet cooling hole does not oppose rotation of the longitudinal vortices formed by the paired vortex generating devices.