Turbine issue: Vacuum needs to be broken
Thread Content
This post was last edited by you*n*nyou on 2011-9-22 at 14:05. After our turbine stopped rotating, the steam had dissipated, and it was necessary to break the vacuum; however, even after closing the main air valve of the two-stage exhaust pumps, the vacuum did not decrease for a long time. Could the experts help me analyze this? Thank you!
I’m not sure whether you need to break the vacuum or simply shut down the system normally to reduce the vacuum level. Under normal circumstances, it is not recommended to reduce the vacuum by means of operations that disrupt the vacuum. Did you mean the main air valve for shutting down the two-stage exhaust pumps? Could there be a mistake there? Generally, in special situations such as power outages, we close the steam valves of the two-stage vacuum pumps and slightly open the air valves to break the vacuum. Just stopping the extractor will take a long time.
Your sealing system is really excellent, isn’t it?
This indicates that your system has good sealing properties, which is a good thing. You can slightly open the air valve at the vacuum pump to allow the vacuum level to decrease gradually, or you can stop the sealing water supply for the atmospheric pressure valve, which will also help to reduce the vacuum level slowly