Westinghouse Electric Corporation

Lawrence J Coyle

Cletus L Schartner

David B Berrong

Gerald I Marron

Ira J Campbell

John J McGettigan

David A Daugherty

Freddie G King

Philip W Ketterer

Walter B Vogel

John F Daniels

Ronald P Cupo

Clifford T Parker

John L Morris

Stephen J Tencza

Craig J Zurat

The invention in its broadest form includes a device for inverting a cover with a predetermined weight from a horizontal position to an inverted position, the device comprising a crane for lifting the cover; at least two pivotable brackets each attached to both the cover and the crane and positioned to suspend a substantial amount of the weight of the cover for pivoting the cover; and a cable attached to the cover at one end and to the crane at its other end and positioned to suspend a nominal amount of the weight of the cover for supporting the cover.

Method and device for inverting a turbine cylinder cover

The method of the present invention uses a combination of gap measurement methods to map the gap in a joint in a high pressure vessel such as a steam turbine or steam valve. An exposed and supported surface is hydraulically balanced allowing any twisting of the surface to be removed. The map is then created using a blue contact method, feeler gages, deformable gap measuring medium and laser profiling for both surfaces of the joint. A restoration plan is produced using the map which minimizes the restoration work and produces matching joint surfaces. The joint surfaces are welded and/or machined and finally finished in accordance with the plan. A laser can be used to guide or reference the machine tool. Matching joint surfaces, especially if relatively flat, provide a better high pressure seal than relatively flat surfaces that do not match while relatively flat surfaces that do match produce an even better seal.

Method of measuring joint gaps and restoring same

Growing community of inventors

Wilmington, DE, United States of America

Lawrence J Coyle