Electric actuator classification, selection, operation

Date:Jan 10, 2019

1. According to the selected electric actuator, the electrical parameters are different due to different electrical parameters of the electric actuator manufacturer. Therefore, the electrical parameters must be determined during the design selection, mainly the motor power, rated current, and secondary control loop voltage. Etc., often in this aspect of negligence, the result of the control system and electric actuator parameters do not match the work time and space open trip, fuse blow, thermal overload relay protection take-off and other faults.

2. Determine the output torque of the electric actuator according to the torque required by the valve. The torque required to open and close the valve determines the output torque of the electric actuator. It is usually proposed by the user or the valve manufacturer can choose it as the actuator manufacturer. It is only responsible for the output torque of the actuator. The torque required for the normal opening and closing of the valve is determined by factors such as the size of the valve and the working pressure. However, due to the difference in processing precision and assembly process of valve manufacturers, the torque required for different specifications of valves produced by different manufacturers is also different. Even the torque of the same specification valve produced by the same valve manufacturer is different. When selecting the actuator If the torque selection is too small, the valve will not open and close properly, so the electric actuator must choose a reasonable torque range.

Electric actuator use

The electric actuator is a driving device for various types of electric valves in the rotary control system. It is used to control the opening and closing of the valve. It is suitable for valves with angular strokes such as butterfly valves, ball valves and dampers. It can accurately operate according to control commands. The valve is an indispensable drive for remote control, centralized control and automatic control. RC series electric actuators are widely used in various industrial fields, including: petroleum, chemical, water treatment, electric power, building materials, smelting, pharmaceutical, paper, energy, food processing, shipbuilding, building automation and so on.

Previous: Use of electric actuators

Next: Anti-jamming technology of electric actuators and its characteristics