首页>
外国专利>
Automatic shut=off valve for gas pipelines - is controlled by timer under normal conditions, and is closed by gas pressure when pipeline fails
Automatic shut=off valve for gas pipelines - is controlled by timer under normal conditions, and is closed by gas pressure when pipeline fails
展开▼
机译:天然气管道自动关闭阀-在正常情况下由计时器控制,在管道发生故障时由气压关闭
展开▼
页面导航
摘要
著录项
相似文献
摘要
A forward direction closing safety valve device comprises an automatic shutting safety valve provided within a pressure transforming chamber and being controlled by a timing device under normal condition. The valve is capable of closing itself in response to the forward direction flow of the excessive high pressure gas caused upon pressure reducing failure in the pipeline passage. It will no longer be caused to open by the control of the timing device so as to achieve its objective of automatically shutting the pipeline passage off by means of the help provided by the high pressure gas in the forward direction in prevention of the disaster of gas explosion from happening accidentally.
展开▼