GAS TURBINE DIFFUSER OUTER DIAMETER AND INNER DIAMETER WALL STRIPS FOR TURBINE EXHAUST MANIFOLD PRESSURE OSCILLATION REDUCTION

摘要

An arrangement to minimize vibrations in a gas turbine exhaust diffuser is provided. The arrangement includes a projection coupled to an inner cylindrical surface or the outer cylindrical surface of a fluid flow path of the gas turbine exhaust diffuser. The projection minimizes pressure oscillations in the gas turbine exhaust diffuser such that an unsteadiness of the fluid flow surrounding the second tangential strut is reduced. A method to minimize pressure oscillations in a gas turbine diffuser is also provided.

主权项

1. An arrangement to minimize vibrations in a gas turbine exhaust diffuser, comprising:
a gas turbine exhaust diffuser, comprising:
a turbine exhaust manifold connected to a turbine exhaust cylinder establishing a fluid flow path, the fluid flow path bounded radially outward by an outer cylindrical surface and bounded radially inward by an inner cylindrical surface;a first tangential strut arranged in the turbine exhaust cylinder between the outer cylindrical surface and the inner cylindrical surface; anda second tangential strut in the turbine exhaust manifold downstream from the first tangential strut between the outer cylindrical surface and the inner cylindrical surface; and a projection coupled to inner cylindrical surface or the outer cylindrical surface, wherein the projection minimizes pressure oscillations in the gas turbine exhaust diffuser such that an unsteadiness of the fluid flow surrounding the second tangential strut is reduced.