Electric actuator is a kind of control equipment widely used by people nowadays. It has three types: straight stroke, angular stroke and multi rotation. The angle stroke electric actuator takes the motor as the power component, and converts the input DC current signal into the corresponding angular displacement (0-90 degrees). This actuator is suitable for operating rotary control valves such as butterfly valves and baffles.
Pneumatic actuator is an executive device that uses pneumatic pressure to drive the opening and closing or regulating valve. It is also called pneumatic actuator or pneumatic device, but it is commonly referred to as pneumatic head. The actuator and regulating mechanism of pneumatic actuator is a unified whole, and its actuator has membrane type, piston type, fork type and rack and pinion type.
It is believed that many users will not be able to solve the problem when facing the failure of the electric actuator. Although this is related to the precision of the electric actuator, it is mainly because the faults of the electric actuator in different use stages are different, which leads to the complexity of the maintenance process.
The valve electric actuator is an important part of the active control system. It receives the control signal given by the controller or manual, amplifies its power, and converts it into the corresponding angle or linear displacement of the output shaft, continuously or intermittently pushes various control mechanisms, such as control valves and baffles, to complete the control of various parameters in the production process.
The reliability of electric actuator is shown in the ability to complete the corresponding functions under the normal specified conditions and within the specified time. Generally, it can be summarized as the characteristics that environmental conditions can affect the performance of electric actuator, such as temperature, humidity, magnetic field, mechanical impact, dust, etc. The dynamic condition can affect the performance of electric actuator and the dynamic characteristics.
