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US 4,905,527 AGranted
Boiler tube wall inspection system
AssigneeThe Babcock & Wilcox Company
InventorsGeorge H. Harth, Daniel M. Schlader, Robert E. Womack
Life of this patent
Estimating the term…
Abstract
A remotely operable boiler tube wall cleaning and inspection system including a collapsible "H" frame capable of being inserted through the boiler manway access ports and being positioned at will over the full area of the tube wall.
Claims10
An apparatus for inspecting a boiler tube wall, comprising:
- an upper rail;
- a lower rail situated parallel with said upper rail;
- a middle rail pivotally attached to said upper and lower rails, said middle rail having a first collapsed position being situated immediately between and approximately parallel with said upper and lower rails for entry into the boiler tube, said middle rail further having a second expanded position being situated transversely between said upper and lower rails after entry in the boiler tube, said middle rail being situated in the second position between said upper and lower rails for movement lengthwise along said upper and lower rails;
- a carriage movably connected to said middle rail;
- means for remotely controlling movement of said carriage;
- means for inspecting the boiler tube wall connected to said carriage on said middle rail;
- and
- means for moving said rails in the boiler tube.
5 more elements
An apparatus for cleaning and inspecting a boiler tube wall, comprising:
- an upper rail;
- a lower rail situated parallel with said upper rail;
- a middle rail pivotally attached to said upper and lower rails, said middle rail having a first collapsed position being situated immediately between and approximately parallel with said upper and lower rails for entry into the boiler tube, said middle rail further having a second expanded position being situated transversely between said upper and lower rails after entry in the boiler tube, said middle rail being situated in the second position between said upper and lower rails for movement lengthwise along said upper and lower rails;
- a carriage movably connected to said middle rail;
- means for remotely controlling movement of said carriage;
- means for cleaning the boiler tube wall fastened to said carriage;
- means for inspecting the boiler tube wall fastened to said carriage;
- and
- means for moving said rails in the boiler tube.
6 more elements
Dependencies are inferred from the claim text.