How to improve the performance of the regulating valve

As for the electric regulating valve with large diameter and high torque, there are multiple inversion electric actuators, and the control is not a problem. Recently, there have been frequency conversion speed regulation electric actuators, which can improve the degree of control and achieve energy-saving at the same time. The goal: not only the traditional electronic electric regulating valve, but now there is also a fully digital intelligent regulating valve capable of HART communication, which can complete intelligent functions such as online diagnosis, alarm, and record data, which greatly improves the application of the regulating valve. function.

There is also the emergence of an intelligent regulating valve that integrates a controller, a sensor and an actuator, which can measure the control variable by itself. After the controller is calculated, the output control signal drives the regulating element, that is, the valve core to regulate the flow, pressure and other parameters of the medium. , An intelligent regulating valve is equivalent to a miniature control system, which communicates digitally with the central control system to coordinate to complete the control mission.

Of course, the electric regulating valve is not without defects: the internal heat generated by the operation of the motor will cause thermal maintenance and make the regulating valve stop working; because the motor needs to output torque through multi-stage deceleration, the running speed is not very fast. It is not suitable for the occasion of opening and closing. Large torque and high speed are still a difficult contradiction to solve; because there are many moving parts, it is relatively easy to malfunction, especially in the frequent conditioning conditions, it is easy to cause thermal maintenance of the motor, damage to the reduction gear, and module damage. In this case, it is better to choose a pneumatic regulating valve.