What phenomenon occurs when a steam turbine experiences water hammer?
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What are the symptoms of water hammer in a steam turbine?
(1) Sudden drop of more than 50°C in main steam temperature over 10 minutes； (2) Wet steam emerges or water droplets splash from the main steam valve flange, cylinder joint surface, throttle valve stem, shaft seal, etc. (3) There are water hammer sounds and intense vibrations in the steam pipes. (4) The load decreases, the sound of the unit becomes abnormal, and the vibration of the unit increases. (5) The axial displacement increases, the temperature of the thrust bearings rises, and the expansion difference of the unit moves in a negative direction. For reference only
Why isn’t there anyone replying? I really want to learn*
Reply to 1# 286574089: There is a knocking sound and increased vibration
Reply to 1# 286574089: The main steam temperature dropped by over 50°C in 10 minutes； 6 e& o$ c3 I+ \/ X2 x, & b l; d' O6 `1 l3 J （3）There are water hammer noises and intense vibrations in the steam pipes. 0 N/ P3 w. ?% @, j. D9 V （5）The axial displacement increases, the temperature of the thrust bearings rises, and the expansion difference of the unit moves in a negative direction. I completely agree with the views expressed on the first floor! But buddy, what he analyzed were the reasons. When gas-induced water hammer occurs, the first sign is an increase in vibration levels; the condition of water hammer can be determined based on these vibration patterns. Generally, if vibration is caused by water hammer, it is quite severe, and shutdowns occur almost immediately as a result. If the machine does not stop, it indicates that it is only a minor water hammer effect; in that case, follow the procedures outlined on the first floor, check the steam pressure, restore normal operation promptly, and adjust the throttle valve to reduce vibration
Basically, those are the things that tend to occur at the beginning of startup......