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:
Oct. 06, 1992
Filed:
Dec. 24, 1990
Kuo P Huang, Winter Springs, FL (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
The present invention substantially reduces the likelihood of cracking failure occurring in the inlet sleeves which connect a steam source to the outer cylinder of a steam turbine. The present invention eliminates the excessive vibration which is the fundamental cause of cyclic stresses which cause fatigue cracking. The present invention minimizes vibration by limiting the amplitude of the sleeve's oscillations of the inlet sleeve by preferably restraining the sleeve within a structure such as a disc having grooves cut therein which engage splines formed on the inlet sleeve. The present invention provides sufficient clearance for installation but reduces the amplitude of radial oscillations. The present invention thus allows free vertical and radial sleeve movement of the inlet sleeve, but limits random vibration that caused highcycle vibrations. The present invention limits sleeve vibration in all directions, but does not introduce undesirable thermal stresses, while providing adequate cold clearance for installation ease. Methods of assembling steam turbines are also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile