With the development of industrial automation, intelligent pneumatic valve has been slowly spread to various industries in the pipeline control, intelligent is mainly embodied in the pneumatic valve with intelligent valve positioner by computer program control valve switch and precise flow control.
Intelligent performance in the following areas:
1 .pneumatic valve has its function of fault diagnosis, the diagnosis of valve flow control is accurate, the feedback signal is in place; diagnosis of the running state of the remote communication and intelligent valve position adjustment function, make the management more convenient pneumatic valve, fault diagnosis easier, but also reduces the need for maintenance personnel skill requirements.
2. pneumatic valve can be used to reduce the production line product type, all with pneumatic valve intelligent control. Pneumatic valve with intelligent valve positioner not only can easily change the flow characteristics of the pneumatic valve can also improve the control quality of the control system. As a result, the requirements for the flow characteristics of pneumatic valves can be simplified and standardized (e.g., the production line characteristics of pneumatic control valves). The intelligent function module is used to realize the matching with the characteristics of the controlled object, so that the type and the variety of the pneumatic valve products are greatly reduced, and the manufacturing process of the pneumatic valve is simplified. In order to reduce the variety of pneumatic valves, the domestic manufacturers also have the production of fully functional pneumatic valves, these intelligent methods will continue to improve, and in the production and the market has been tested and recognized.
3. pneumatic valve digital communication. Digital communication will be widely used in the pneumatic valve, the HART communication protocol based on some of the pneumatic valve positioner input signal and valve position signal to achieve the same transmission line; based on the fieldbus technology, pneumatic valve and valve positioner, PID control module combination to control function at the field level to achieve, so that risk of dispersion, so that control of more timely and more quickly.
4. intelligent valve positioner is also called intelligent valve controller. Smart valve positioner with all the features of the valve positioner, pneumatic valve and can improve the dynamic and static characteristics, improve the control precision of the pneumatic valve, therefore, intelligent valve positioner in the next period of time has become an important auxiliary equipment of the pneumatic valve is widely used.
