Actuator is a widely used electromechanical integrated equipment in the field of automatic control. It drives the opening or closing of valves according to the instructions of the control system, ensuring that every operation is precise and error free. In a complex industrial production line, thousands of actuators work together to ensure the smooth operation of the entire system.

Project Background:
A petrochemical group's 1.1 million tons/year ethylene plant, with 31 regulating butterfly valves, was put into operation in 2020. After more than four years of use, 13 of the three eccentric butterfly valves have experienced inadequate operation, leading to a decrease in production line efficiency.

The problems faced by the production line include insufficient driving force of the original actuator, slow or stuck valve action, unstable control, affecting process stability, and increasing energy consumption.

Challenges:
Due to the short operation time of the production line, the customer wants to retain the original valve body of the production line and only replace the actuator.

Solution:
Valve maintenance: For the existing valves on the production line, Star Controls provides maintenance services to solve the existing problems of the valves.

Customization of actuators: easier control of valves to achieve reliable switching actions.

• Based on the structural characteristics of the three eccentric butterfly valve on site, BETTIS G fork type actuator is selected. The torsional characteristics during rotation are consistent with the torque characteristics required for butterfly valve opening and closing, making control easier and more reliable;

• The BETTIS G fork type actuator can provide the torque requirements of the original valve body under actual working conditions to ensure smooth opening and closing of the valve;

Overall gas path optimization: precise control of valve position, execution of complex logical operations, while providing real-time status feedback.

• Add Fisher DVC6200 digital valve positioner;
• Add a By-pass gas filter;
• Replace Fisher directional valve and amplifier.

Dynamic testing: Simulate on-site working conditions in the SC workshop, conduct dynamic testing, and test the overall stability and reliability of the system.

Through this renovation, we have effectively solved problems such as insufficient driving force of the original actuator and valve jamming, improving the stability of process control and the efficiency of the production line.

Welcome to contact Star Controls at any time, let's pay attention to the health of the actuator and protect your production line together!