Regarding the steam seal extraction pump of back-pressure steam turbines
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Our company has chosen back-pressure steam turbines, of which the height of the steam seal extractor is 3 meters. After these two startups, air was drawn in from the condensate water discharge outlet; once a water seal was established, no flow occurred. Meanwhile, the steam seal of the turbine leaked intermittently, with the negative pressure of the extractor ranging from -0.03 to -0.04 MPa. I’m seeking advice from experts: could this situation be due to poor performance of the exhaust pump? Are there any good ways to improve it? Thank you
It’s likely that the extraction pump is not performing well. Check whether there are any impurities blocking the nozzles, clean them, or redesign and manufacture the extraction pump