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:
Jul. 13, 2010
Filed:
Jul. 11, 2007
Marco Micheli, Wettingen, CH;
Marco Micheli, Wettingen, CH;
Alstom Technology Ltd., Baden, CH;
Abstract
A method for modifying a multistage compressor () involves exchanging the rotor blades of the first compressor rotor blade row (LA) for modified rotor blades which have an identical blade leaf profile () to the original rotor blades and the blade angle (B') of which is different from the blade angle (B′) of the original rotor blades. Furthermore, the blades of at least one further blade row (LAN, LEN) arranged downstream of the second compressor stage are exchanged for modified blades which have an identical blade leaf profile () to the original blades and the blade angle (B′, B″) of which is different from the blade angle (B′, B″) of the original blades. The method makes it possible to increase the mass flow of a compressor and essentially maintain the stability reserve against stall.