Today, the necessity for electric valve actuators has increased rapidly. Almost at every work, you can see the endless use of hydraulic, pneumatic, or electric actuator systems. But many stereotypes are involved in these types of motion systems. While you may think sometime that the need to activate your application is based on an exact type of actuator, however, the new technological advancement has also allowed you to re-examine the specifics of each, which could mean more than one option for your project/work.
To help you out, we have discussed different types of electric actuators so you can choose the appropriate for your use.
What is an electric actuator?
It is a mechanical device that changes electricity into kinetic energy in a rotary movement or single linear. To increase the efficiency and complexity of the process, it automates the valve or the damper. The designs of electric actuators are based on the specific tasks they perform as well as they can vary in size and shape.
For electric valve actuators, there are more applications due to the movement towards massively increased decentralization that is occurring in automation technology. Plus, new process controllers can now be fitted on latest generation electric actuators, which simplify compliance with recently updated automation standards.
Different Types of Electric Actuator
There are three different types of electric actuators available in the market. So, it is essential first to identify the fundamental way in which each type of actuator accomplishes its work.
- Pneumatic linear actuators: It consists of a single-piston inside an empty cylinder. A hand pump or a peripheral compressor moves the piston in the cylinder housing, and this increases the pressure. Hence it will move the cylinder along the alignment of the piston, which will then create the necessary linear force. It turns to its original retracted length by an elastic restoring force or a fluid supplied on the opposite side of the piston.
- Hydraulic linear actuators: It is analogous to pneumatic linear actuators, but in a hydraulic actuator, an incompressible liquid is supplied by a pump, which contrasts the pressurized air moving the cylinder in a linear movement. This is made up of two parts, i.e., one is an actuating component, and the other is a controlling device.
- Electric linear actuators: With the rotational force of a motor, i.e., electric energy, and converts it into linear movement. By turning the screw of the actuator via the nut, the motor will move in a line from top to bottom, creating a push / pull effect for the weight.
Hence, each of these actuators is essential for their proper application, but with technological developments in the manufacturing world, it has made these motion devices interchangeable. However, each has its pros and cons, so be sure to consider the options before deciding on the right actuator for your project/work.
Where is Electric Actuators Used?
The use of electric valve actuators appears in various types of industries. Usually, they are used in industrial applications associated with the manufacture of pumps, motors, and valves. They most often automate industrial valves, and many types of technical processing plants use them, including Upstream, downstream and downstream oil and gas plants, Wastewater treatment plants, Power stations, Food and beverage factories, Agriculture, and agricultural plants, Pulp and paper mills.
With the advancement in technology, it is essential to consider both pros and cons of different types of electric actuators to determine the best options for a project.
Also, take a look at the points mentioned above to select an electric valve actuator for your work.