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Pipe burst safety device for natural gas pipe lines or the like
Pipe burst safety device for natural gas pipe lines or the like
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机译:用于天然气管道等的管道破裂安全装置
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摘要
A pipe line has a check valve therein, operable by an actuator. The actuator is connected to be operated by fluid pressure from the pipe line, and is connected with the pipe line by a control circuit including valve means. A differential pressure valve is connected in the control circuit, and is constructed to sense a drop in pressure within the pipe line downstream of the control valve. Upon sensing such a pressure drop, the differential pressure valve is effective to cause connection of the actuator to pipe line pressure upstream of the check valve, whereby the latter is automatically closed.
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