VALVE DEVICE

To provide a valve device capable of improving durability of a diaphragm while supporting high pressure and large flow rate situation.SOLUTION: Since a metal diaphragm 15 has a curved part 155 that is convexly curved toward a valve closing side, stress is more likely to be dispersed throughout the m...

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Bibliographic Details
Main Authors MIYAGAWA OSAMU, HAMADA SHOGO, MURATA KEISUKE
Format Patent
LanguageEnglish
Japanese
Published 24.09.2020
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:To provide a valve device capable of improving durability of a diaphragm while supporting high pressure and large flow rate situation.SOLUTION: Since a metal diaphragm 15 has a curved part 155 that is convexly curved toward a valve closing side, stress is more likely to be dispersed throughout the metal diaphragm as compared to a configuration in which the metal diaphragm is convexly curved toward a valve opening side. Therefore, even when the metal diaphragm 15 is configured by using a highly rigid metal thin plate material to support high pressure situation and a stroke of a valve body 13 is lengthened to support large flow rate situation, it is possible to suppress damage to the metal diaphragm 15, and improve durability.SELECTED DRAWING: Figure 2 【課題】高圧および大流量に対応しつつダイヤフラムの耐久性を向上させることができる弁装置を提供する。【解決手段】金属ダイヤフラム１５が、弁閉側に向かって凸に湾曲した湾曲部１５５を有することで、金属ダイヤフラムが弁開側に向かって凸に湾曲している構成と比較して、金属ダイヤフラム全体に応力が分散しやすい。従って、剛性の高い金属薄板材を用いて金属ダイヤフラム１５を構成することで高圧に対応し、且つ、弁体１３のストロークを長くして大流量に対応した場合であっても、金属ダイヤフラム１５の損傷を抑制し、耐久性を向上させることができる。【選択図】図２
Bibliography:Application Number: JP20190051371