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The reason why the axial displacement of the steam turbine increases is as follows 2020-04-06


1). Load change. Sudden load rejection.

 

2). The scale of the blade is serious.

 

3). Steam temperature changes.

 

4). The steam flow rate changes.

 

5). The high-pressure shaft seal has large steam leakage, which affects the temperature rise of the bearing seat.

 

6). Frequency changes.

 

7). Blades break during operation.

 

8). Water shock.

 

9). Thrust bearing is worn or damaged.

 

10). Steam extraction is disabled and the axial thrust changes.

 

11). The rotor of the generator moves.

 

12). The high pressure steam seal changes the steam pressure regulation.

 

13). Vacuum changes.

 

14). Electric shaft displacement gauge is affected by the change of frequency and voltage.

 

15). The hydraulic shaft displacement gauge is affected by the oil pressure at the outlet of the main oil pump and the change in oil temperature.


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