GAS TURBINE WITH COULOMBIC THERMAL PROTECTION

摘要

A gas turbine is configured to operate with a high temperature combustion gas stream. The gas turbine may include a combustor that provides a combustion gas stream including charged particles and at least one turbine stage including at least one high temperature surface that may be driven with a voltage selected to repel the charged particles. The at least one high temperature surface may output a film-cooling layer including cool air, the film-cooling layer being stabilized by Coulombic forces between the voltage and the charged particles.

主权项

1. A gas turbine, comprising:
a combustor configured to output a combustion gas stream; and a turbine including at least one turbine stage configured to receive the combustion gas stream; one or more high temperature surfaces in the combustor, the turbine, or the combustor and the turbine; and a voltage source operatively coupled to at least one of the high temperature surfaces, and configured to at least intermittently apply a voltage having a polarity to the high temperature surface; wherein the combustion gas stream includes charged particles having a first sign the same as the polarity of the voltage to which the at least one high temperature surface is driven.