Control.com - Nerds in Control
from the operations department...
Steam turbine trip on dryness fraction
  | Posted by pawan  on 24 July, 2012 - 8:28 am |
Is there any trip on dryness fraction in steam turbine? If so, what is the recommended value of dryness fraction that must be maintained at LP exhaust to condenser? Also Why should we maintain the dryness fraction with in the limits?
pawanp7@gmail.com
pawanp7@gmail.com
|
Except for the last few stages of ST blades (probably the last two rows), in general ST blades are not designed to rotate with the present of water droplets. The droplets will damage the blades pretty soon. For the given design back pressure of LP turbines, the last row or maybe the second last row of blades is designed to deal typical up to 10% wetness. Anything more than that the wetness might reach the unprotected blades.
Your use of this site is subject to the terms and conditions set forth under Legal Notices and the Privacy Policy. Please read those terms and conditions carefully. Subject to the rights expressly reserved to others under Legal Notices, the content of this site and the compilation thereof is © 1999-2013 Nerds in Control, LLC. All rights reserved.
Users of this site are benefiting from open source technologies, including PHP, MySQL and Apache. Be happy.
Fortune
You could get a new lease on life -- if only you didn't need the first
and last month in advance.
