'The project high technical content, reflects the instrument professional level and quality, very worth thumb up. 'Held on March 23, guangzhou petrochemical instrument control center, production coordination meeting in' three hydrogen production device program-controlled valve timeout alarm research project 'won the best technological project in the fourth quarter of 2014, after the center, production technology department of li-feng zhao said. At the end of last year, four workshop instrument instrument control center staff in hydrogen production device kv103a 60, 60 kv104b two program control valve for preventive maintenance, found the body perform slow and there are 8 seconds overtime alarm security hidden danger. If not be settled as soon as possible, will affect the normal operation of the system program, threatening hydrogenation normal production of the joint mechanism. To eliminate the hidden danger as soon as possible, four workshops set up research team, led by technicians, monitor Yang Long, to carry out the 'blanket'. They repeated the valve switch, electromagnetic valve, air pressure valve accessories such as inspection, testing, found no abnormal signs. When task-force bewildered, Yang Long in through to the PLC system input card tracking monitoring, found that the measurement circuit of the pressure drop is too large. After further inspection found that the measurement circuit is the cause of the pressure drop is too large program control valve switch back insurance tube resistance is too large. After replacement insurance tube, the timeout alarm phenomenon disappeared. Finally, the research team determine insurance tube resistance is slow lead to valve and timeout alarm 'uncertain'. Found a problem, to eliminate hidden dangers. In solving the two program control valve timeout alarm, Yang Long organization staff to the device with 88 insurance tube of program control valve for inspection, found that insurance tube resistance all have different degrees of larger phenomenon. In order to ensure safety, 88 sets of workshop immediately made the SPC Industrial Valves replacement online insurance tube. Recently, the insurance tube all completed, the device program control Industrial Valves timeout alarm all hidden danger eliminated.
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