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:
Jun. 16, 2015
Filed:
Sep. 13, 2012
Kohichi Nakayama, Yokohama, JP;
Kenji Osaki, Yokohama, JP;
Hisashi Matsuda, Tokyo, JP;
Hitoshi Sakakida, Tokyo, JP;
Toshio Hirano, Yokohama, JP;
Toshiaki Hirate, Kawasaki, JP;
Sueyoshi Mizuno, Tokyo, JP;
Ikuo Saito, Yokohama, JP;
Kohichi Nakayama, Yokohama, JP;
Kenji Osaki, Yokohama, JP;
Hisashi Matsuda, Tokyo, JP;
Hitoshi Sakakida, Tokyo, JP;
Toshio Hirano, Yokohama, JP;
Toshiaki Hirate, Kawasaki, JP;
Sueyoshi Mizuno, Tokyo, JP;
Ikuo Saito, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
According to the embodiment, there is provided a blade vibration measuring apparatus, having, a contactless displacement sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction, a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor, and a blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device.