| 摘要 |
PURPOSE:To automatically control constantly optimum bearing oil temperature in response to the number of revolution in the turbine by means of turbine revolution number signals and of making it linearize into oil feed setting temperature. CONSTITUTION:The number of revolution in a turbine 1 is brought into detection 3, and its revolution number signals are converted into oil temperature setpoint signals SV by a function generator 6. On another hand, turbine oil feed temperature is brought into detection 5, deviation between its detecting signals and the signals SV are brought into arithmetic operation 7, it is brought into PID arithmetic operation 8, opening degrees of a regulating valve 9 is regulated to change cooling water folw rate in an oil cooler 4, so that it can be controlled to the bearing oil temperature corresponding to the number of revolution in the turbine 1. |
