Patents by Inventor Soushi NARISHIGE

Soushi NARISHIGE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Eddy current inspection device
    Patent number: 10132779
    Abstract: To realize an object of providing an eddy current inspection device which is able to control a sensitivity decrease, and is able to reliably detect a defect.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: November 20, 2018
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Masahiro Miki, Soushi Narishige, Isao Yoshida
  • Method and device for monitoring status of turbine blades
    Patent number: 9689660
    Abstract: An object of this invention is to sense a transient displacement of the blade position to thereby detect abnormalities early. The invention includes: one or more first sensors mounted so as to be removable from an outer surface of a casing opposed to blade tips; a second sensor for acquiring a signal from a fixed point on a rotor shaft of the blades; a section configured to extract data groups from an output signal of the first sensor on the basis of information acquired by the second sensor; a section configured to average the data groups; a section configured to determine thresholds from averaged data obtained under a healthy condition; and an assessing section configured to compare magnitude of the thresholds and sensor signals obtained during blade status monitoring. Since a transient displacement of blade position can be sensed, abnormalities can be detected early in this invention. This early detection, in turn, enables a rotation to be stopped during an initial phase of blade damage.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 27, 2017
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Akira Nishimizu, Toshiyuki Hiraoka, Masahiro Tooma, Soushi Narishige, Tetsuya Matsui
  • Eddy Current Inspection Device
    Publication number: 20160356743
    Abstract: To realize an object of providing an eddy current inspection device which is able to control a sensitivity decrease, and is able to reliably detect a defect.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 8, 2016
    Inventors: Masahiro MIKI, Soushi NARISHIGE, Isao YOSHIDA
  • Method and Device for Monitoring Status of Turbine Blades
    Publication number: 20150002143
    Abstract: An object of this invention is to sense a transient displacement of the blade position to thereby detect abnormalities early. The invention includes: one or more first sensors mounted so as to be removable from an outer surface of a casing opposed to blade tips; a second sensor for acquiring a signal from a fixed point on a rotor shaft of the blades; a section configured to extract data groups from an output signal of the first sensor on the basis of information acquired by the second sensor; a section configured to average the data groups; a section configured to determine thresholds from averaged data obtained under a healthy condition; and an assessing section configured to compare magnitude of the thresholds and sensor signals obtained during blade status monitoring. Since a transient displacement of blade position can be sensed, abnormalities can be detected early in this invention. This early detection, in turn, enables a rotation to be stopped during an initial phase of blade damage.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Akira NISHIMIZU, Toshiyuki HIRAOKA, Masahiro TOOMA, Soushi NARISHIGE, Tetsuya MATSUI