MIXING SYNCHRONIZATION HYBRID BLADE AND METHOD RELATED TO IT

Title:

MIXING SYNCHRONIZATION HYBRID BLADE AND METHOD RELATED TO IT

Document Type and Number:

Japanese Patent JP2006052732

Kind Code:

A

Abstract:

To expand hybrid blade technology in order to reduce, or to more effectively decay oscillation of a steam turbine blade.

A steam turbine rotor wheel (48) includes a plurality of blades (10) having a pocket (20) formed at a wing profile part, and the plurality of blades are divided into two blade groups (A, B). The pocket of one blade group (A) is filled with one or a plurality of kinds of polymer fillers, and the pocket of the other blade group (B) is also filled with one or a plurality of kinds of polymer fillers. Then the polymer filler of the one blade group generates a natural frequency or a decay property different from that of the polymer filler of the other blade group at the one blade group. The blades of the two groups are assembled on the rotor wheel in accordance with a predetermined pattern.

Inventors:

BURDGICK STEVEN S
DELEONARDO GUY W
LIN WENDY W
BARB KEVIN JOSEPH

Application Number:

JP2005229006A

Publication Date:

February 23, 2006

Filing Date:

August 08, 2005

Export Citation:

Click for automatic bibliography generation Help

Assignee:

GEN ELECTRIC

International Classes:

F01D5/14; F01D5/16; F01D25/00

Domestic Patent References:

JPS5338723Y2	1978-09-20
JPS57143103A	1982-09-04
JPS57140501A	1982-08-31
JPH1047004A	1998-02-17
JPS6441603A	1989-02-13
JPS4956008A	1974-05-30
JPS3614951B1
JP4075361B

Foreign References:

US5931641A

1999-08-03

Attorney, Agent or Firm:

Kenichi Matsumoto
Hirokazu Ogura
Nobukazu Ito
Toshihisa Kurokawa

Previous Patent: LINEAR PUMP HAVING EXHAUST PULSATION ATTENUATING MECHANISM

Next Patent: TURBINE SHELL JACKING POCKET