GAS TURBINE PREMIXER WITH CRATERED FUEL INJECTION PORTION

摘要

PROBLEM TO BE SOLVED: To provide a premixer for a gas turbine combustor.;SOLUTION: The premixer includes a swirler (12) including a plurality of turning vanes (14) for imparting a swirl velocity to an airflow passed through the premixer, and at least one fuel injection portion (16) for mixing fuel with the airflow in the premixer. The fuel injection portion is terminated in a cratered hole (32). The cratered hole enhances a mixing efficiency and increases backfire/flame holding resistance.;COPYRIGHT: (C)2010,JPO&INPIT