Analysis of geometric errors of throat sizes of last stage blades in a mid-size steam turbine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F22%3A43968575" target="_blank" >RIV/49777513:23210/22:43968575 - isvavai.cz</a>

Výsledek na webu

<a href="http://jmacheng.not.pl/Analysis-of-Geometric-Errors-of-Throat-Sizes-of-Last-Stage-Blades-in-a-Mid-Size-Steam,151118,0,2.html" target="_blank" >http://jmacheng.not.pl/Analysis-of-Geometric-Errors-of-Throat-Sizes-of-Last-Stage-Blades-in-a-Mid-Size-Steam,151118,0,2.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.36897/jme/151118" target="_blank" >10.36897/jme/151118</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of geometric errors of throat sizes of last stage blades in a mid-size steam turbine

Popis výsledku v původním jazyce

Steam turbine technology with enhanced flexibility will continue to participate in electric power supply mixes. Last stage blades secure the reliability of a steam turbine and require high precision manufacturing and assembly. This case study presents a statistical analysis of geometric errors of the throat sizes of the last stage blades in a mid-size steam turbine. A 3D optical scanner is employed to capture detailed geometries of rotor blades and a half of assembled nozzle diaphragm. Unrolled cylinder cross-sections are used to evaluate 2D geometrical features such as blade throats and areas at three different diameters, and the results are compared to intended designs. In addition, linear correlations between the throat size and blade pitch, area and trailing edge thickness are established, and blade throat position shifts are quantified. Such a comprehensive study is presented for the first time, and some useful conclusions can be retrieved from this case study.

Název v anglickém jazyce

Analysis of geometric errors of throat sizes of last stage blades in a mid-size steam turbine

Popis výsledku anglicky

Steam turbine technology with enhanced flexibility will continue to participate in electric power supply mixes. Last stage blades secure the reliability of a steam turbine and require high precision manufacturing and assembly. This case study presents a statistical analysis of geometric errors of the throat sizes of the last stage blades in a mid-size steam turbine. A 3D optical scanner is employed to capture detailed geometries of rotor blades and a half of assembled nozzle diaphragm. Unrolled cylinder cross-sections are used to evaluate 2D geometrical features such as blade throats and areas at three different diameters, and the results are compared to intended designs. In addition, linear correlations between the throat size and blade pitch, area and trailing edge thickness are established, and blade throat position shifts are quantified. Such a comprehensive study is presented for the first time, and some useful conclusions can be retrieved from this case study.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EF16_026%2F0008389" target="_blank" >EF16_026/0008389: Výzkumná spolupráce pro dosažení vyšší účinnosti a spolehlivosti lopatkových strojů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Machine Engineering

ISSN

1895-7595

e-ISSN

2391-8071

Svazek periodika

22

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

16

Strana od-do

132-147

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85138640397