When a natural gas pipeline ruptures, the adjacent automatic line control valves (ALCVs) should close quickly to prevent leakage or explosion. The differential pressure set point (DPS) at each valve location is the main criteria for value setting in ALCV action. If the DPS is not properly adjusted, the ALCV may mistakenly close or it may not take any action at proper time. This study focused on...

When a natural gas pipeline ruptures, the adjacent upstream and downstream automatic control valves (ACV) should close quickly to prevent leakage or explosion. The differential pressure set point (DPS) at each valve location is the main criteria for value setting in ACV actions. If the DPS is not properly adjusted, the ACV may mistakenly close or it may not take any actions at a proper ti...

This article introduces the automatic control process of solenoid valve production line with PLC control and touch screen user interface. The production line can produce four types of solenoid valves. There are numerous steps in the production process to ensure the quality of the products, e.g. Jian Chu and Yan Feng, AUTOMATIC CONTROL PROCESS OF SOLENOID VALVE PRODUCTION LINE BASED ON PLC AND T...

Abstract This paper introduces a design method of an automatic control system for coolant circulation in the laboratory, which can use “pneumatic pump + valve control” manual place “manual pressing liquid filling collection”. Then this analyzes principle and has carried out application practical had solved problems low efficiency, environmental pollution, waste resources existing operation mode.