title: ÐÐ¿ÑÐ¸Ð¼Ð¸Ð·Ð°ÑÐ¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐ¸Ð»Ñ Ð¿Ð¾ÑÐ»ÐµÐ´Ð½Ð¸Ñ ÑÑÑÐ¿ÐµÐ½ÐµÐ¹ Ð¼Ð¾ÑÐ½ÑÑ Ð¿Ð°ÑÐ¾Ð²ÑÑ ÑÑÑÐ±Ð¸Ð½
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Optimization of the structural profile of the last stages of powerful steam turbines
Creators: name: ÐÐ¾Ð½Ð´Ð°ÑÐµÐ½ÐºÐ¾, ÐÐ¸ÐºÐ¾Ð»Ð°Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ°ÑÐ¾Ð²ÑÐµ ÑÑÑÐ±Ð¸Ð½Ñ
Ð¿Ð¾ÑÐ»ÐµÐ´Ð½ÑÑ ÑÑÑÐ¿ÐµÐ½Ñ
Ð¿Ð¾ÑÐµÑÐ¸
last stage
losses

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description: The subject of graduate qualification work: "Optimization of the structural profile of the last stages of powerful steam turbines". This study is focused on computational research of characteristics of the last stages of high-speed steam turbine LPC. The tasks that were solved during the study are: 1.Â To make a brief review of design features and operating conditions of the last stages. 2. to define a selection of investigated variants of flow parts with working blades 1300-1500 mm and methods of their calculation. 3.Â To carry out computational research by one-dimensional and two-dimensional methods for comparing the results. 4.Â To carry out a series of calculation studies for the selected variants of the last stages and to analyse the obtained dependences according to their results. 5.Â Conduct a series of computational studies with the applied low-pressure cylinder and selected last stages. Analyze the results and draw a conclusion. The work was carried out based on "LMZ" JSC, where a part of the raw material was collected, modern applied methods for calculating the flow parts of "LMZ" JSC and OJSC "VTI" were obtained, as well as approach to analysis of the results. As a result, the tendency of reducing the efficiency factor with increasing losses with the output velocity with increasing length of the working blade, due to the deterioration of the output angle indicator with increasing output velocity in the absolute flow of steam was revealed. Also recommendations for application of each considered stage with different blade length for turbines of different level of generated electric power were determined.