Pneumatic actuators connected components content of the special inspection

In the chemical industry automatic control system, in order to achieve accurate positioning actuator often pneumatic actuators and electric in the valve positioner. Positioner receives the output signal of the controller, and the proportional relationship between the output signal to control the pneumatic actuator. And we mentioned above, because of the particularity of chemical production, the device will lead to actuators for vibration connected with locator is disengaged, more serious stem also release bad situation. So how to do it to predict, prevent, so as to achieve the effect by? This requires manufacturers of pneumatic actuators connected components and formed the special inspection system to make it normal. Pneumatic actuators connected components make special standards and rules of special inspection is transferred specialized engineering and technical personnel in accordance with the provisions of the monthly examination content in all actuators are responsible for the device connecting parts for inspection. To check out the time limit for the overhaul and rectification shall be ordered to those responsible for the rectification and according to the relevant evaluation standard of personnel assessment of rewards and punishments, finally ensure pneumatic actuator and positioner release of hidden dangers, to ensure the stable and efficient operation of the device. The implementation of pneumatic actuators and regulating mechanism is a unified whole, the actuator can be divided into film type, piston and gear rack type, etc. Piston stroke length, suitable for thrust have larger demand situation; The diaphragm on the contrary, stroke is small, only can directly drive the valve stem. Including gear and rack type because of its simple structure, smooth and reliable action, and the advantages of safe explosion-proof, is everyone's favorite, especially in power plants, chemical industry, oil refining, etc have higher request for safe sex has been widely used in industry.