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篇目详细内容 |
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【篇名】 |
Exhaust hood for steam turbines-single-flow arrangement |
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【刊名】 |
Frontiers of Energy and Power Engineering in China |
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【刊名缩写】 |
Front. Energy Power Eng. China |
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【ISSN】 |
1673-7393 |
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【EISSN】 |
1673-7504 |
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【DOI】 |
10.1007/s11708-009-0039-4 |
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【出版社】 |
Higher Education Press and Springer-Verlag |
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【出版年】 |
2009 |
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【卷期】 |
3
卷3期 |
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【页码】 |
321-329
页,共
9
页 |
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【作者】 |
Michal HOZNEDL;
Ladislav TAJC;
Jaroslav KREJCIK;
Lukas BEDNAR;
Kamil SEDLAK;
Jiri LINHART;
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【关键词】 |
exhaust hood; steam turbines; single-flow arrangement |
【摘要】 |
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In the past, increased attention was given to the development of an optimal shape for the inlet part of LP turbine casings in SKODA POWER. A double-flow design is typically used for high power output turbines. An optimized shape for the internal diffuser has been found, which transforms the kinetic energy of steam into increased pressure, thus effectively increasing the thermodynamic efficiency of the stage. Some conclusions have been drawn from laboratory experiments, others derived directly from on-site measurements at power plants. The conclusions from the development of double-flow turbines form the basis for the design of the single-flow turbine arrangement. Single-flow design is typically used for lower output turbines. There are still some limitations in applying this arrangement. The designer needs to resolve the bearing position and how to ensure access to them. Reinforcing the ribs and supports are used, therefore, to ensure the rigidity of the entire casing. The optimization of the single-flow diffuser shape is therefore the subject of the study presented below. |
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