| 摘要 |
PURPOSE:To automatically close a piping when a trouble has taken place, by a system wherein supply and return lines of bearing oil are doubled and an oil pressure detector for detecting a decrease in oil pressure and a solenoid valve are provided in either of the supply and return lines. CONSTITUTION:When a turbine is started, solenoid valves 9 and 10 are opened by a signal 2C under AND conditions of an operating signal 2A of an oil pump 2 and a time signal 2B for filling a piping and a bearing section 4 with oil, thereby supplying the oil to the bearing section. In the meantime, during operation, the solenoid valves 9 and 10 are opened by a ''not'' signal 7C of an operating signal 7B from an oil pressure detector 7 to supply the oil to the turbine bearing. When there is produced the operating signal 7B at the oil pressure detector 7, the solenoid valves 9 and 10 are closed and an alarm 14 is operated under the AND conditions of an operating signal of an operating signal 13 during turbine operation and the operating signal 7B from the oil pressure detector 7, giving a warning to an operator of the occurrence of a trouble in the oil piping. |
