Articulated sludge lance

Details Articulated sludge lance Articulated sludge lance

F - Mech Eng,Light,Heat,Weapons

28

G

122/16

F28G 1/16 (2006.01) B08B 9/02 (2006.01) F22B 37/48 (2006.01) F22B 37/54 (2006.01) G21D 1/00 (2006.01) G21D 5/12 (2006.01)

Patent

CA 2024817

An articulated lance for cleaning sludge located between steam generator tubes is disclosed. A plurality of radius blocks are attached to the end of a manipulator member and are actuatable by a cam assembly to form an arc permitting the lance to be received between adjacent tubes within a tube bundle, A plurality of fluid passageways interconnect a fluid inlet on the manipulator member with one or more outlet orifices adjacent the end of the lance, The outlet orifices are positioned outwardly with respect to the end of the manipulator member so that fluid passing therethrough can be directed to impinge upon sludge surrounding the tubes. A spring backing plate biases the radius blocks and the manipulator member back into the same plane upon deactuation of the cam assembly.

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