The designs of iron roughneck working torque real time monitoring scheme and the hardware system
Hao Wu1, YongPeng1,2
COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(12D) 145-149
1Mechanical Engineering School, Xi`an Shiyou University, Xi’an,710065, China
2National Engineering Technology Research Centre for Oil and Gas Drilling Equipment, Xi’an,710065, China
The iron roughneck, a full automatic making-up or breaking-out device instead of the traditional hydraulic tongs, has been applied in production practice and become the essential equipment in automatic pipe handling system on marine drilling platform. When the iron roughneck is at working, real time monitoring and controlling of the working torque is necessary. It can ensure the torque value is under control when drilling tools are made up or broken out so as to protect the drill screw threads and prolong the service life of drills. Based on the measurement and control of the working torque of the iron roughneck, the scheme, which treats testing hydraulic cylinder working pressure as the measurement information, is determined. The hardware circuit including sensors, single chip microcomputer, alarm, feedback control and so on is designed to provide hardware conditions for the test and control of the iron roughneck working torque. Finally, the simulation experience used to test alarm function of the system is carried out.