Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm
Despite a sustainable energy future, steam turbines are requisite for the reliability and security of the electric power supply in many countries. Accurate and precise manufacturing of the steam path is crucial to turbine efficiency. Before entering the rotor blades, the steam must be correctly guid...
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Publishing House of Wrocław Board of Scientific Technical Societies Federation NOT
2022-06-01
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| Series: | Journal of Machine Engineering |
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| Online Access: | http://jmacheng.not.pl/Effect-of-Manufacturing-Processes-on-Blade-Throat-Size-and-Position-in-a-Steam-Turbine,150830,0,2.html |
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| author | Petr Eret Michal Hoznedl |
| author_facet | Petr Eret Michal Hoznedl |
| author_sort | Petr Eret |
| collection | DOAJ |
| description | Despite a sustainable energy future, steam turbines are requisite for the reliability and security of the electric power supply in many countries. Accurate and precise manufacturing of the steam path is crucial to turbine efficiency. Before entering the rotor blades, the steam must be correctly guided using stationary blading in a diaphragm. Steam turbine diaphragms are complicated components to manufacture, and welding is the most common fabrication method. A case study presented in this paper employs data from a 3D optical scanner for a geometric deviation analysis of the upper half of the diaphragm at two production steps, after complete welding and after final machining. Unrolled cylinder cross-sections at different diameters are used to evaluate the blade throat sizes and positions compared to the nominal geometry. The results indicate significant geometric changes between the two fabrication steps, and several suggestions are put forward for targeted future work. |
| format | Article |
| id | doaj-art-dd047aab079a464daf37cf4e6b874575 |
| institution | DOAJ |
| issn | 1895-7595 2391-8071 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Publishing House of Wrocław Board of Scientific Technical Societies Federation NOT |
| record_format | Article |
| series | Journal of Machine Engineering |
| spelling | doaj-art-dd047aab079a464daf37cf4e6b8745752025-08-20T02:56:24ZengPublishing House of Wrocław Board of Scientific Technical Societies Federation NOTJournal of Machine Engineering1895-75952391-80712022-06-0122314816010.36897/jme/150830150830Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine DiaphragmPetr Eret0Michal Hoznedl1Dept. of Power System Engineering, Faculty of Mechanical Engineering, University of West Bohemia, Czech RepublicExperimental Research of Flow, Doosan Skoda Power, Czech RepublicDespite a sustainable energy future, steam turbines are requisite for the reliability and security of the electric power supply in many countries. Accurate and precise manufacturing of the steam path is crucial to turbine efficiency. Before entering the rotor blades, the steam must be correctly guided using stationary blading in a diaphragm. Steam turbine diaphragms are complicated components to manufacture, and welding is the most common fabrication method. A case study presented in this paper employs data from a 3D optical scanner for a geometric deviation analysis of the upper half of the diaphragm at two production steps, after complete welding and after final machining. Unrolled cylinder cross-sections at different diameters are used to evaluate the blade throat sizes and positions compared to the nominal geometry. The results indicate significant geometric changes between the two fabrication steps, and several suggestions are put forward for targeted future work.http://jmacheng.not.pl/Effect-of-Manufacturing-Processes-on-Blade-Throat-Size-and-Position-in-a-Steam-Turbine,150830,0,2.htmlsteam turbine diaphragmmanufacturing processesblade throat3d optical scanning and geometric deviation |
| spellingShingle | Petr Eret Michal Hoznedl Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm Journal of Machine Engineering steam turbine diaphragm manufacturing processes blade throat 3d optical scanning and geometric deviation |
| title | Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm |
| title_full | Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm |
| title_fullStr | Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm |
| title_full_unstemmed | Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm |
| title_short | Effect of Manufacturing Processes on Blade Throat Size and Position in a Steam Turbine Diaphragm |
| title_sort | effect of manufacturing processes on blade throat size and position in a steam turbine diaphragm |
| topic | steam turbine diaphragm manufacturing processes blade throat 3d optical scanning and geometric deviation |
| url | http://jmacheng.not.pl/Effect-of-Manufacturing-Processes-on-Blade-Throat-Size-and-Position-in-a-Steam-Turbine,150830,0,2.html |
| work_keys_str_mv | AT petreret effectofmanufacturingprocessesonbladethroatsizeandpositioninasteamturbinediaphragm AT michalhoznedl effectofmanufacturingprocessesonbladethroatsizeandpositioninasteamturbinediaphragm |