Electric Actuator

NegotiableUpdate on 01/19

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Nature of the Manufacturer: Producers

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Overview

Adopting large-scale digital integrated chips, with powerful functions and high precision levels. Mechatronics design, small size and light weight. By using professional pressure sensors to measure the torque value of the output shaft, the accuracy of torque measurement has been improved, with an error rate of ≤ 5%, and dynamic monitoring, display of over torque, and alarm for locked rotor can be provided

Product Details

Electronic actuator, also known as electric actuator. It is a driving device that can provide linear or rotational motion, which uses electrical energy to drive and works under the action of control signals, and is applied to various industrial automation process control links.

1. Electric multi turn actuator

Electric driven multi turn actuators are one of the types of actuators used. Using a single-phase or three-phase motor to drive gears or worm gears, and finally driving the valve stem nut, the valve stem nut causes the valve stem to move and open or close the valve.

Multi turn electric actuators can quickly drive large-sized valves. In order to protect the valve from damage, the limit switch installed at the end of the valve stroke will cut off the motor power supply. At the same time, when the safety torque is exceeded, the torque sensing device will also cut off the motor power supply. The position switch is used to indicate the on/off status of the valve. The handwheel mechanism installed with the clutch device can manually operate the valve in case of power failure.

The main advantage of this type of actuator is that all components are installed in one housing, which integrates all basic functions within this waterproof, dustproof, and explosion-proof shell. The main disadvantage is that in the event of a power failure, the valve can only remain in its original position, and only with the use of a backup power system can the valve achieve a fail safe position (fail open or fail closed)

2. Electric single rotary actuator

This type of actuator is similar to an electric multi turn actuator, with the main difference being that the final output of the actuator is a motion of 1/4 turn to 90 degrees. The new generation of electric single turn actuators combines the complex functions of most multi turn actuators, such as parameter setting and diagnostic functions using a non intrusive user-friendly interface.

The single turn actuator has a compact structure and can be installed on small-sized valves, with a typical output torque of up to 800 kilograms per meter. Additionally, due to the small required power supply, they can be equipped with batteries to achieve safe operation in case of failure.