Analysis and Evaluation of Applicability and Modification Effect of New Style Steam Seal for Steam Turbine
- DOI
- 10.2991/iccte-16.2016.173How to use a DOI?
- Keywords
- steam turbine, steam seal modification, new style steam seal, energy saving analysis, comprehensive analysis
- Abstract
According to structural feature and operating characteristic of several kinds of new style steam seal, their application position in flow passage and axle head is introduced in this paper. Energy saving effect is generalized by synthetically analyzing several parameters, which are tested before and after the seal modification with the same testing point and condition, including heat consumption rate, cylinder efficiency, monitoring parameters, steam seal leakage. The steam seal modification of 660MW unit shows remarkable improvement with HP cylinder efficiency increasing from 2.7% to 3.1%, IP cylinder efficiency increasing from 1.6% to 1.7%, heat consumption rate decreasing by 210kJ/kW.h. The leakage from steam seal between HP and IP cylinder to LP cylinder accounts for 1.283% of main steam flow which decreases to 0.8945% after the steam seal is modified as well practical IP cylinder efficiency increases from 89.544% to 91.27%. In addition to the above improvement, the leakage from HP rear shaft seal to IP exhaust, temperature rise of condensation water through gland steam condenser, pressure of shaft seal and monitoring parameters also decrease apparently.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xuedong Wang AU - Jianli Qu AU - Xuetong Wang PY - 2016/01 DA - 2016/01 TI - Analysis and Evaluation of Applicability and Modification Effect of New Style Steam Seal for Steam Turbine BT - Proceedings of the 2016 International Conference on Civil, Transportation and Environment PB - Atlantis Press SP - 998 EP - 1006 SN - 2352-5401 UR - https://doi.org/10.2991/iccte-16.2016.173 DO - 10.2991/iccte-16.2016.173 ID - Wang2016/01 ER -