What is the format of the vacuum extraction system in back-pressure steam turbines, and how is low-grade thermal energy and condensate recovered?
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Dear experts, at the moment we are using steam pumps for our vacuum system, but the performance isn’t very good – there is significant steam leakage at the shaft seals. We are considering changing the type of vacuum pump used. Additionally, I’m wondering how the steam and condensed water generated during venting can be recovered. Are there any good techniques or methods for this? I would appreciate some advice
This device is already quite mature. If there is a problem of significant shaft seal leakage, it is best to start by investigating the causes of the leakage and address those issues before taking further action. Furthermore, it is necessary to refer to the period from the initial use until when leakage problems frequently occur in order to determine whether it is due to design factors of the tire itself or to subsequent maintenance issues, thereby facilitating the formulation of appropriate countermeasures. For reference.
This should be decided based on the manufacturer’s advice; if the original design calls for a vacuum pump, could it be that the gap in your steam seal is too large?