VALVE MECHANISM

To provide a valve mechanism which secures a flow rate necessary for a flow passage, and can prevent a change of a flow rate characteristic caused by the wear of an inlet or the like of a downstream-side throttle resulting from erosion.SOLUTION: A valve body 62 and an energization member are arrange...

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Bibliographic Details
Main Authors ABE YUKI, UEDA TOMIO, KINO HIDETOSHI
Format Patent
LanguageEnglish
Japanese
Published 26.03.2020
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
COMBUSTION ENGINES
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:To provide a valve mechanism which secures a flow rate necessary for a flow passage, and can prevent a change of a flow rate characteristic caused by the wear of an inlet or the like of a downstream-side throttle resulting from erosion.SOLUTION: A valve body 62 and an energization member are arranged inside a high-pressure side flow passage 60 being a region at a high-pressure piping side with respect to a valve seat face 65 in a flow passage 60. A valve mechanism 50 comprises a low-pressure side throttle 71 in a low-pressure side flow passage 60b being a region at a low-pressure piping side with respect to the valve seat face 65 in the flow passage 60, an alleviation space 72 whose flow passage cross section area is expanded between the valve seat face 65 and the low-pressure side throttle 71, and an injection passage 73 for connecting items between the valve seat face 65 and the alleviation space 72. An injection center line being a linear line parallel with an injection direction, and passing a center of an injection passage cross section is arranged so as to avoid a low-pressure side throttle minimum cross section.SELECTED DRAWING: Figure 4 【課題】本発明の目的は、流路の必要な流量を確保すると共に、エロージョンに起因する下流側絞りの入口等の摩耗による流量特性の変化を防ぐことができる弁機構を提供する。【解決手段】弁体６２と付勢部材とは流路６０内の弁座面６５よりも高圧配管側の領域である高圧側流路６０ａの内部に配置されている。弁機構５０は、流路６０内の弁座面６５よりも低圧配管側の領域である低圧側流路６０ｂ内に低圧側絞り７１と、弁座面６５と低圧側絞り７１との間に流路断面積が拡大された緩和空間７２と、弁座面６５から緩和空間７２までを接続する噴出通路７３とを備えている。噴出方向と平行であり噴出通路断面の中心を通る直線である噴出中心線は、低圧側絞り最小断面を避けるように配置されている。【選択図】図４
Bibliography:Application Number: JP20180177580