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Treatment of large axial displacement of steam turbine 2020-04-11


(1) When the axial displacement is found to be large, the temperature of the thrust bearing and the oil return temperature of the thrust bearing (65 ℃) should be checked.

 

(2) Listen to the sound of the unit and check the bearing vibration;

 

(3) Check whether the operating conditions have changed and take corresponding measures to return to normal.

 

(4) When the shaft displacement reaches the alarm value, the unit load should be reduced;

 

(5) When the temperature of the thrust shoe reaches the limit value (95 ℃), it should be shut down by failure;

 

(6) When the shaft displacement reaches the limit value and the protection is not actuated, it should be shut down due to failure.


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