I have a question regarding steam turbines; I hope experts can provide answers. Thank you in advance
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Our company uses exhaust steam condensing turbines; the normal temperature of the waste steam is 67 degrees, with a vacuum level of -0.077 MPa. Yesterday, the gas composition in the upstream section changed suddenly, resulting in an increase in the compressor load. This caused the temperature of the waste steam to rise to 72 degrees, and the vacuum level to increase to -0.075 MPa. The system immediately reduced its load, to a level even lower than before. Once the system stabilized, the temperature of the waste steam could no longer return to 67 degrees – it remained at 71 degrees. The circulating water system is stable. I would like to ask experts how this can be explained and how it can be resolved Thank you
You can try increasing the extraction steam to reduce the amount of waste steam
It has increased, but the effect is not significant
Check the condensate level to see if it’s too high
There seems to be an issue with the air evacuation capability; I wonder what the vacuum level is at 71 degrees
At 71 degrees, the vacuum level is -0.075 MPa, showing a slight decrease
The main reason is insufficient cooling capacity of the surface cooler, with some parts of the circulating cooling water pipes being blocked