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How can we solve the problem of the pneumatic actuator?
The solution to the failure of pneumatic actuators will be to select more appropriate pneumatic actuators. Pneumatic actuators have higher cost performance, so we first need to know the types of actuators. Actuators can be divided into pneumatic actuators and electric actuators. There are two more commonly used actuators, and we usually choose pneumatic actuators.
Then we need to select the actuator according to the size of the air source, but we cannot understand the torque required by the rotary valve. The valve is too large and its service life is not long. Pneumatic actuators usually allow 30% torque. Compared with the electric actuator, it can adapt to more environments, and its reasonable structure makes its load force larger, achieving the goal of high torque output. At the same time, compared with the electric actuator, the action is faster and the response is faster. Of course, electric actuators also have many incomparable advantages. The advantages of pneumatic actuators lie in the advantages that electric actuators do not have at present. Both of them have their own shortcomings and advantages. Therefore, with the continuous development of science and technology in the future, the cost-effectiveness of both will be greatly improved.
Secondly, we evaluate the installation platform and select the actuator for each environment. The actuator has a standard, and we will find the corresponding standard according to the valve. As a pneumatic actuator, the valve is used more conveniently. Because of the connection of the pneumatic actuator, the valve can drive the valve body components to move quickly in the pipeline, which has a certain automation effect. In addition, since the brake itself is driven by energy, it has certain value for driving the switch part of the valve body. As the fluid resistance is small, this valve is used for opening and closing the fluid pipeline.
How can we solve the problem of the pneumatic actuator?
Common faults are: the valve body does not move, the valve body cannot be closed to zero, the pneumatic actuator has no feedback signal, and the signal pressure is unstable. There are some special faults, such as the vibration of the pneumatic actuator control valve. Secondly, we mainly analyze the causes and treatment measures of the vibration of the control valve with special faults.
The vibration of the control valve of the pneumatic actuator will cause the control system to not work properly. Three main causes of vibration
1. External vibration source, that is, the equipment pipe itself has vibration.
2. The selection of the control valve of the pneumatic actuator does not meet the selection requirements, such as improper flow characteristics, excessive valve diameter, poor spring stiffness, etc., resulting in the vibration of the control valve.
3. It will be corroded by fluid and generate vibration.
Troubleshooting measures for pneumatic valve actuator: If inherent vibration is found in the equipment pipeline, the equipment pipeline can be cleaned and adjusted to eliminate vibration. If there is a problem with the control valve of the pneumatic actuator, the restriction orifice can absorb part of the pressure drop, reduce the throttling speed and overcome the valve vibration. In addition, the throttle orifice can also change the natural frequency of the system, so as to prevent the vibration caused by the natural frequency of the control valve from approaching the natural frequency of the system.
