| 摘要 |
PURPOSE:To prevent the temperature of supply oil from overshooting, in a device for controlling the temperature of supply oil for turbine bearings, by increasing the gain of a temperature adjusting meter upon starting of a turbine while an adjusting valve is fully opened when the temperature of oil is low, and by rapidly opening the valve when the temperature of oil exceeds a desired value. CONSTITUTION:An adjusting meter 23 controls the opening degree of an adjusting valve 9 for adjusting the volume of cooling water for an oil-cooler in a turbine bearing oil supply system. A supply oil temperature detector 21 detects the outlet oil temperature of the oil-cooler, and delivers the thus detected value to a temperature adjusting meter 23 and a biasing supply oil temperature function computer 25. The temperature adjusting meter 23 is a remote setting type adjusting meter, and sets the temperature at about 30 deg.C by means of a first temperature setting unit 26a during turning, but sets the temperature by means of a second temperature setting unit 26b upon acceleration or upon running at a specific speed. The computer 25 has characteristics as shown in the drawing, the output of which is added by an adder 23c to the output of a PI computing section 23b and thereafter is transmitted to the adjusting valve 9. With this arrangement the valve 9 is fully opened when the temperature of oil is low. When the temperature of oil is raised, the change of valve opening degree becomes gentle. |
