logo

For the Inventor, By the Inventor

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.:

US 9995164 B1

PDFFull Text
Date of Patent:
Jun. 12, 2018

Filed:

Dec. 13, 2012

Rotating fluid machine

Applicant:

Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;

Inventors:

Noriyo Nishijima, Tokyo, JP;

Akira Endo, Tokyo, JP;

Kazuyuki Yamaguchi, Tokyo, JP;

Assignee:

Mitsubishi Hitachi Power Systems, Ltd., Yokohama, JP;

Attorney:

Mattingly & Malur, PC

Primary Examiner:

William McCalister

Int. Cl.
CPC ...
F01D 11/08 (2006.01); F01D 11/02 (2006.01); F01D 5/20 (2006.01); F01D 1/02 (2006.01); F01D 9/04 (2006.01); F01D 25/24 (2006.01); F04D 3/00 (2006.01); F04D 19/00 (2006.01); F04D 29/08 (2006.01); F04D 29/18 (2006.01); F04D 29/32 (2006.01); F04D 29/54 (2006.01); F01D 5/22 (2006.01); F01D 5/10 (2006.01);
U.S. Cl.
CPC ...
F01D 11/08 (2013.01); F01D 1/02 (2013.01); F01D 5/10 (2013.01); F01D 5/20 (2013.01); F01D 5/225 (2013.01); F01D 9/041 (2013.01); F01D 11/02 (2013.01); F01D 25/24 (2013.01); F04D 3/00 (2013.01); F04D 19/007 (2013.01); F04D 29/08 (2013.01); F04D 29/181 (2013.01); F04D 29/32 (2013.01); F04D 29/54 (2013.01); F05D 2220/31 (2013.01); F05D 2220/32 (2013.01); F05D 2240/55 (2013.01);
Abstract

Provided is a rotating fluid machine capable of holding down a decrease rate of a circumferential velocity of a leakage fluid in an interspatial flow passage and thereby controlling an unstable fluid force. A steam turbine includes: an interspatial flow passageformed between an outer circumferential surface of a rotor blade coverand an inner circumferential surface of a grooved sectionin a casing; annular sealing finsA toD spatially arranged in a direction of a rotor axis, at a side of the rotor blade coverin the interspatial flow passage; and a friction enhancement portion (more specifically, rough surfacesA toE) disposed over the whole circumference on the side of the rotor blade coverin the interspatial flow passage

Find Patent Forward Citations

Loading…