FLOWX Engineer 86-21-54150349
In order to enable the pneumatic actuators application in summer, the development of the intelligent positioner has caused the attention of major instrument companies now, while the core technologies of intelligent positioner are the same. Electricity/gas conversion performance is stable and the structure is well made, embodying the elegant design thought.
In many petroleum chemical companies, when the pneumatic actuators application in summer was still impossible, the bad work environment, extremely difficult monitoring and maintenance and instable regulating valve performance have brought to the enterprise production many difficulties. Intelligent positioned, with microprocessor as its core, is not affected by environment and has the features of convenient adjustment, being easy to maintain, and remote monitoring. It represents the development direction of locator, and means that even the pneumatic actuators application in summer is possible now. Both 3 ~ 15 psi pneumatic signal and the 4 ~ 20 m A dc current at the scene are analog signals and can only be one-way information flow. With the development of digital communication technology, digital technology is also applied in the pneumatic actuators application in summer, which is consistent with the requirements of field bus technology.
At present, what is mostly used is the HART digital signal superimposed on the 4 ~ 20 ma analog signal, which means that the analog signal and digital signal can be mixed. Having the pure digital two-way communication that meets the foundation field bus technical specification is the inevitable developing trend of intelligent field instruments, which will make the pneumatic actuators application in summer possible.
The energy conservation of pneumatic actuators refers to reducing power consumption and gas consumption. Compressed air is generated by the compressor, and reducing the air consumption is to reduce the compressor power consumption. Traditional electricity/gas conversion principle in pneumatic actuators application in summer is not in a stable state and also needs continuous consumption of compressed air. The piezoelectric micro valve uses switch principle and the system is stable, which can greatly reduce the air consumption by cutting off the gas source.
Pneumatic actuators application in summer is becoming more and more widely in industrial field application, and the development of the intelligent positioner and mature of the field bus technology brings the profound changes to the production of industrial automation, representing the development direction of electric actuators application in the summer. Abroad big instrument companies develop new intelligent valve positioners to take the Chinese market, so we must have a high starting point of input and develop intelligent products so that the self-help scale production can be realized at an early time.
STI pneumatic actuators application in summer is mainly used in the specific control system of thermal power plants for specific damper control because of its big thrust and torque, the action. Pneumatic actuators application in summer develops quickly, adjusts agilely and is suitable for rapid adjustment process.
But its complex structure, poor reliability and not accurate regulation are still the problems. Therefore, the maintenance and calibration process of pneumatic actuators are particularly important. SC series of pneumatic actuators have "three broken" self-locking function, namely, power off, cut off gas source and the fault signal. The pneumatic actuators can keep unchanged in situ and can run continuously in the bad environment.