Patent ID: 8816671
Filing Date: 2014-08-26
Classification: F01D,F01K,F05D

Abstract:
1. A system for diagnosing and repairing problems assorted with an automatic cutoff of a steam turbine, comprising a logical array of first, second, third, and fourth electro-hydraulic solenoid valves, each such valve having an input and an output to facilitate the control of hydraulic lubrication oil through such valves; a first hydraulic line connecting between the input of the first solenoid valve and the output of the third solenoid valve; a second hydraulic line connecting between the input of the second solenoid valve and the output of the fourth solenoid valve; a first pressure transducer connected between output of the first solenoid valve and the input of the third solenoid valve; a second pressure transducer connected between the output of the second solenoid valve and the input of the fourth solenoid valve, said system being characterized by said first hydraulic line having first and second orifices connected in series within said first hydraulic line, said second hydraulic line having first and second orifices connected in series within said second hydraulic line.