| 摘要 |
PURPOSE:To prevent a turbine trip before its occurrence, by providing a solenoid value in a bearing supply oil pressure switch pipe enabling a remote test to be performed while excepting a test circuit from the pipe when the oil pressure decreasing during testing. CONSTITUTION:A bearing supply oil pipe 3, connected with bearings of a turbine 1 and a generator 2, provides a pressure switch 4 while a trip pressure switch 5 through a testing solenoid valve 6. And the trip switch 5 is checked to be soundly operated by remotely energizing the solenoid valve 6. While if the supply oil pressure decreases during testing, the switch 4 operates to open a test circuit and enable a turbine trip to be performed.
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