Research of pneumatic control valve actuators with double acting

The double effects of pneumatic control valve of pneumatic, hydraulic, electric actuators, are generally not reset spring. The size of the force has nothing to do with its direction, therefore, the selection of the actuator is the key to find out the biggest output force and rotational torque of the motor. For single acting pneumatic actuators, the output power is associated with the opening of the valve, pneumatic control valve on the emergence of the force will also affect the movement characteristics, therefore needs to be established in the pneumatic - valve opening range force balance. In order to make the pneumatic - valve to work properly, with the implementation of the mechanism to produce enough output force to guarantee high sealing and opening of the valve. On the actuator output force is determined, according to the process using the environment requirements, choose the corresponding actuator. For the scene have explosion-proof requirements, should choose pneumatic actuators. From the aspects of energy saving consideration, should try to choose electric actuators. If the adjustment of high precision, can choose hydraulic actuators. Such as power plants transparent machine speed regulation, the refinery catalytic unit reactor temperature regulation control and so on.