VALVE SHEET LEAK INSPECTION DEVICE AND VALVE SHEET LEAK INSPECTION METHOD

PROBLEM TO BE SOLVED: To provide a valve sheet leak inspection device and a valve sheet leak inspection method that can easily inspect valve sheet leak.SOLUTION: The present invention includes: a first acoustic sensor for detecting vibration in a first pipe located on a downstream side of a directio...

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Bibliographische Detailangaben
Hauptverfasser:	YAMASHITA YOSHIHIRO, NIINA TAKAYUKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	MEASURING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a valve sheet leak inspection device and a valve sheet leak inspection method that can easily inspect valve sheet leak.SOLUTION: The present invention includes: a first acoustic sensor for detecting vibration in a first pipe located on a downstream side of a direction in which a fluid flows with respect to a valve sheet; a detection unit for detecting a difference obtained by withholding background vibration from the vibration of the first pipe; and a determination unit for determining the presence of leaking of the fluid in the valve sheet on the basis of the value of the difference associated with a determined frequency.SELECTED DRAWING: Figure 1 【課題】弁シートリークを簡便に検査できる弁シートリーク検査装置および弁シートリーク検査方法を提供すること。【解決手段】弁シートに対して流体の流動方向の下流側に位置する第１配管の振動を検出する第１音響センサと、第１配管の振動から暗振動を差し引いた差分を検出する検出部と、判定周波数に対応する差分の値に基づいて弁シートにおける流体の漏洩の有無を判定する判定部と、を備える。【選択図】図１