Theoretical research on steady-state and closing value characteristics of liquid level control value


  • National Engineering Research Center for Disaster & Emergency Relief Equipment, Professor (OB and HRM), China
  • Master Degree, Logistics Training Center of PLA Rocket Force, Hebei, 075 000, China
  • National Engineering Research Center for Disaster & Emergency Relief Equipment, Professor, China
  • Army Logistics University of PLA, Senior Engineering, National Engineering Research Center for Disaster & Emergency Relief Equipment, Chongqing, 401 331, China


During the refuelling process, the float switch closes when the internal tank liquid level reaches the highest level, but the automatic control valve cannot be closed simultaneously. If the delay time is too long, it may lead to an oil spill accident. In this paper, we analyzed the structure and basic working principle of the liquid level control. In addition, the flow of the automatic control valve, the force condition of the value core, the time required for closing the value, the speed and accelerated velocity of value core movement were theoretically studied according to the fluid momentum theorem and the kinematic equation of the valve closing process, which is of great practical significance for advancing research level of liquid level control valve.


Theoretical research, steady-state, closing value characteristics, liquid level control value

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