The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 1997
Filed:
Mar. 28, 1994
Earl H Brinkman, Schenectady, NY (US);
General Electric Co., Schenectady, NY (US);
Abstract
The reheat tub 10 in a double-flow steam turbine is provided with additional setback from the rotor buckets 16 by forming a three-part reheat tub construction including first and second discrete diaphragm segments 26a and third inner ring segments 28a. The annular arrays of these segments are dimensioned to enable greater axial spacing between the nozzles and buckets. To refurbish an in-service double-flow turbine, the damaged reheat tub is removed and cut along axial and radial part lines to form discrete first and second diaphragm segments. The diaphragm segment nozzles are then refurbished by machining an arcuate hook 46 with a tapered surface 48 on the inner ring portion. The annulus 28 is provided with a complementary hook 50 and tapered surface 52. The diaphragm and annulus segments 26a and 28a are aligned end-to-end and rotated to join the segments along the hooks.