С.Н. Прудников
6
On the influence of the profile of the check valve
on the dynamic characteristics of the actuator
© S.N. Prudnikov
Bauman Moscow State Technical University, Moscow, 105005, Russia
Unbalanced forces and torques occur in pneumatic and hydraulic actuating devices with
large nominal diameters and significant pressure drop on the shaft of regulators. That causes
the necessity of using drives with enlarged power. It is necessary to significantly reduce the
unbalanced forces and moments on the shaft of the throttle and rotary valves when using
membrane actuators to improve the amplitude-frequency and phase response, as well as qual-
ity factor of automatic control systems. In the process it is expedient to use profiled regulators.
The article presents results of experimental investigation of compacted disks on aerodynamic
test bench, torque characteristics, allowing for application of pneumatic and hydraulic actua-
tors with significantly decreased power, as well as practical recommendations on profiling
drives of the throttle and check valves of the swing type.
Keywords:
torque moment, dynamic characteristics, pneumatic and hydraulic actuators,
hydraulic resistance.
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