Butt Fusion Welding Control System

Plastic pressure pipe is widely used in gas transmission, water supply, sewage, agricultural irrigation, mining, as well as fine particles of solid conveying oil, chemicals, and postal telecommunications fields, while the pipe connection technique has become an important issue. In the manufacture and lying of the plastic piping system connection is an important factor which impacts the structure integrity and lasting strength. Because there is some dangerous medium, such as natural gas and coal gas, etc, the damage of structure will lead to dire consequence, so it is considered that the connection technology of pipe is one of the key technologies which impact the quality of the plastic pipe in practical applications. Present polyethylene, polypropylene, and polybutylene are connected using Butt welding technology.a high-quality, high-efficiency plastic pipe connection technology.At present, the domestic engineering equipment used in the Butt welding is not in high automation, which usually uses manual welding, it is difficult to guarantee the pipe welding quality, and it is difficult to trace the person responsible for the project. Therefore, the study of Butt Fusion Welding automation devices is necessary.This paper analyses the whole Butt Fusion Welding processes, establish the temperature control model and hydraulic model, finally realize the Butt Fusion Welding automation device design and function implementation. The main content of the research include:(1)Analyze the Butt welding process; design the hardware circuit and software of the control equipment.(2)Describe the processes of building the hydraulic model and the temperature model. calculate PID parameters.(3)Introduce the automation process of the Butt welding, design and realize the closed-loop control to hydraulic and temperature of the system, and prove the feasibility of control project by simulation(4)Introduce the software and hardware implementation process of the Butt welding. Prototype has been completed and used in practical prduction.