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:
Mar. 18, 2025
Filed:
May. 16, 2019
Yokogawa Electric Corporation, Musashino, JP;
Shumpei Ito, Musashino, JP;
Yoshiaki Tanaka, Musashino, JP;
YOKOGAWA ELECTRIC CORPORATION, Musashino, JP;
Abstract
The present disclosure provides a valve diagnosis apparatus capable of being combined with an existing valve and of automatically diagnosing corrosion, a valve apparatus using this valve diagnosis apparatus, and a valve diagnosis method. A valve diagnosis apparatus of the present disclosure includes an ultrasonic transmitter that transmits ultrasound towards a valve element that opens and closes a valve to be diagnosed, an ultrasonic receiver that receives the ultrasound transmitted from the ultrasonic transmitter, a controller that drives the ultrasonic transmitter and processes a reception signal received by the ultrasonic receiver, and a memory that stores the reception signal. The controller detects corrosion of the valve element from the difference in intensity of the reception signal in the initial state of the valve and at the time of diagnosis.