Design of Automatic Transportation System for Drilling String Based on PLC Technology
For the low success rate of drilling string transportation due to lack of logic control between modules in the conventional drilling string automatic transportation system,the automatic transportation system of drilling string based on PLC technology is designed.According to the analysis of the basic functional requirements of the system,the PLC is taken as the control core of the automatic conveying system to design the hardware of the system by the power supply sliding contact line,the pipe orientation detection module,the pipe column turnover module,the pipe column lifting module and the PLC control module,and the logic control between the modules is carried out.Based on the hardware design of the system,the software part is designed.According to the working characteristics of the automatic conveying system,the conveying path of single string and multi-layer multi row string is planned,and the automatic conveying system is designed with the system hardware.The experimental results show that the total success rate of the designed system is over 98％at different transportation speeds.
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