Imaging system for inspecting a turbine

Abstract

An imaging system for inspecting a turbine through an opening in a turbine casing is disclosed. The system includes a fitting installed in the opening. A lens assembly is mounted to a first side of the fitting and extends inside of the turbine casing. A fiber optic bundle is mounted to a second side of the fitting and extends outside of the turbine casing to a camera disposed remote from the opening.

What is claimed is: 
     
         1 . An imaging system for inspecting a turbine through an opening in a turbine casing, the imaging system comprising:
 a fitting for installation in the opening in the turbine casing, the fitting having a first side facing the inside of the turbine casing and a second side facing the outside of the turbine casing;   a camera disposed remote from the opening outside of the turbine casing;   a lens assembly mounted to the first side of the fitting and extending inside of the turbine casing; and   a fiber optic bundle mounted to the second side of the fitting and extending outside of the turbine casing to the camera.   
     
     
         2 . The imaging system of  claim 1 , wherein the fitting is a threaded fitting. 
     
     
         3 . The imaging system of  claim 1 , wherein the fitting provides a pressure seal on the turbine casing. 
     
     
         4 . The imaging system of  claim 1 , wherein the camera is an infrared camera. 
     
     
         5 . The imaging system of  claim 1 , wherein the lens assembly comprises a rigid tube enclosing lenses and spacers between the lenses. 
     
     
         6 . The imaging system of  claim 1 , wherein the fiber optic bundle is connected to the camera with a threaded fitting. 
     
     
         7 . The imaging system of  claim 1 , wherein the fiber optic bundle is connected to the camera with a fitting. 
     
     
         8 . The imaging system of  claim 1 , wherein the camera is mounted to an enclosure of the turbine. 
     
     
         9 . An imaging system for inspecting a turbine through an opening in a turbine casing, the imaging system comprising:
 a fitting for installation in the opening in the turbine casing, the fitting having a first side facing the inside of the turbine casing and a second side facing the outside of the turbine casing;   an infrared camera disposed remote from the opening outside of the turbine casing;   a lens assembly mounted to the first side of the fitting and extending inside of the turbine casing, the lens assembly comprising a rigid tube enclosing lenses and spacers between the lenses; and   a flexible fiber optic bundle mounted to the second side of the fitting and extending outside of the turbine casing to the camera.   
     
     
         10 . The imaging system of  claim 9 , wherein the fitting is a threaded fitting. 
     
     
         11 . The imaging system of  claim 9 , wherein the fitting provides a pressure seal on the turbine casing. 
     
     
         12 . The imaging system of  claim 9 , wherein the fiber optic bundle is connected to the camera with a threaded fitting. 
     
     
         13 . The imaging system of  claim 9 , wherein the camera is mounted to an enclosure of the turbine.