Torque Characteristics of Check Valves in Inclined Pipelines

In automatic and distant control systems with pneumatic and hydraulic elements, it is common to use actuators consisting of a drive and a controlling or closure device, or a check valve. Due to the asymmetry of the dynamic forces of the flow, unbalanced torques may occur on the shaft of the controlling or closure device, resulting in the use of drives with a significant capacity. Profiling of regulatory bodies can significantly reduce the drive power. This principle can be used for check valves in air separation plants to prevent sticking of check valves. This requires the use of specially profiled discs that can significantly improve the dynamic characteristics of the valves and their reliability under different operating conditions. The article shows methods of profiling of rotary-type controlling bodies, such as throttle valves for pneumatic and hydraulic actuators. The authors present the calculation data for determining the torque characteristics of the closure and controlling devices, such as swing-check valves installed in horizontal and inclined pipelines.

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