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:
May. 14, 2002
Filed:
Jul. 02, 1999
Applicant:
Inventors:
Edward T. Vitone, Jr., Ashburnham, MA (US);
John B. Haven, Sterling, MA (US);
Michael R. Kolk, Ashburnham, MA (US);
Assignee:
Power Technology, Incorporated, Fitchburg, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 1/02 ; F03B 1/04 ; F04D 2/944 ;
U.S. Cl.
CPC ...
F01D 1/02 ; F03B 1/04 ; F04D 2/944 ;
Abstract
A steam turbine has multiple valves for introducing steam into a steam turbine. Each of the input valves introduce steam flow around the entire the 360 degree arc. The set of nozzles are each divided into a plurality of chambers. Each set of chambers extends around the full arc of the turbine. Each set has a valve. The chambers are designed so that all valves are open when the turbine is running at maximum output. The chambers are sized such that valve throttling losses are minimized when the turbine is at its normal operating condition.