Patent ID: 9010120
Filing Date: 2015-04-21
Classification: F23R

Abstract:
1. A transfer tube for use in a late lean injection system of a combustor of a combustion turbine engine, wherein the combustor includes an inner radial wall, which defines a primary combustion chamber downstream of a primary fuel nozzle, and an outer radial wall, which surrounds the inner radial wall forming a flow annulus therebetween, the outer radial wall including a late lean nozzle, the transfer tube comprising: flow directing structure that defines a fluid passageway; wherein: further comprising a stop positioned at a predetermined location toward the second end of the transfer tube; wherein the stop comprises a rigid section of enlargement that is larger than the hollow passageway defined by the boss, the section of enlargement being configured to arrest further withdrawal of the transfer tube from the inner radial wall once the section of enlargement contacts the boss.