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. 04, 2019
Filed:
Nov. 23, 2016
Applicant:
Hitachi-ge Nuclear Energy, Ltd., Hitachi-shi, Ibaraki, JP;
Inventors:
Assignee:
Hitachi-GE Nuclear Energy, Ltd., Hitachi-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 17/02 (2006.01); G01N 29/44 (2006.01); G01N 29/50 (2006.01); G01N 29/04 (2006.01); G01N 29/11 (2006.01); G01N 29/34 (2006.01);
U.S. Cl.
CPC ...
G01B 17/02 (2013.01); G01N 29/04 (2013.01); G01N 29/11 (2013.01); G01N 29/343 (2013.01); G01N 29/348 (2013.01); G01N 29/4436 (2013.01); G01N 29/50 (2013.01); G01N 2291/015 (2013.01); G01N 2291/0258 (2013.01); G01N 2291/02854 (2013.01); G01N 2291/044 (2013.01); G01N 2291/262 (2013.01); G01N 2291/2634 (2013.01); G01N 2291/2636 (2013.01);
Abstract
Chirp waves generated in a transmitting/receiving unit is supplied to ultrasonic sensors. Signals output from the ultrasonic sensors are supplied to the transmitting/receiving unit and summed in a signal processing/recording unit. The signal processing/recording unit performs mutual correlation processing between the summed signals and the chirp waves and calculates a peak generation time difference. Necessity of exchanging a pipe is determined by calculating and recording the thickness of a pipe from the calculated time difference and calculating a difference between thicknesses measured in the past and the present.