COMBUSTION TURBINE ENGINE COMBUSTOR BASKET IGNITER PORT ALIGNMENT VERIFICATION TOOL AND METHOD FOR VALIDATING IGNITER ALIGNMENT

摘要

A combustion turbine engine combustor igniter port alignment and dimensional verification tool is insertable in guide tube and igniter boss portions of the igniter port. The tool has concentrically nested outer and inner sleeves, having respective circumferential profiles that are separately slidably insertable within corresponding igniter port guide tube and igniter boss portions that have inner circumferential profiles in conformance with minimal dimension specifications. Concentric alignment of the guide tube and igniter boss is validated by inserting the nested outer and inner sleeves into the igniter port. The verification tool is capable of validating igniter port alignment and dimensions before the combustor is installed in a combustion turbine engine.

主权项

1. An igniter port alignment verification tool for a combustion turbine combustor basket of the type having:
outer and inner combustor shrouds nested along a combustor centerline axis; an igniter port coupled to the inner and outer combustor shrouds at a port angle defined by an igniter port centerline axis and the combustor centerline axis, the igniter port including a tubular guide tube and a tubular igniter boss that are concentrically aligned along the igniter port centerline axis; the guide tube having a proximal guide tube axial end that is coupled to and outwardly projects from the outer shroud and a guide tube inner circumferential profile having a first minimum dimension specification; the igniter boss having a proximal boss axial end that is coupled to and projecting outwardly from the inner shroud, a distal boss axial end proximal the guide tube proximal end and an igniter boss inner circumferential profile having a second minimum dimension specification;said igniter alignment tool comprising:
an outer sleeve, having a first distal end defining a first outer circumferential profile that is adapted for slidable insertion into a first minimum dimension guide tube inner circumferential profile; and an inner sleeve, having a second distal end defining a second outer circumferential profile that is adapted for slidable insertion into a second minimum dimension igniter boss inner circumferential profile;the inner sleeve slidably retained in nested concentric alignment within the outer sleeve, with the combined nested sleeves slidably insertable within concentrically aligned guide tube and igniter boss respective first and second inner circumferential profiles.