Tokovne razmere v vstopnih turbinskih stopnjah visokotlačne parne turbine v jedrski elektrarni s tlačnovodnim reaktorjem

magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo

Adam Šiško (Author), Mihael Sekavčnik (Mentor)

Abstract

Podaljševanje življenjske dobe jedrskih elektrarn je zelo pomemben korak proti brezogljični oskrbi z električno energijo v prihodnosti. V ozadju je veliko vzdrževalnih posegov in tehnoloških nadgradenj komponent in sistemov, ki nato z usklajenim delovanjem skrbijo za zanesljivo obratovanje elektrarne. V sklopu magistrske naloge smo se osredotočili na menjavo in nadgradnjo visokotlačne turbine tlačnovodne jedrske elektrarne. Analizirali smo vpliv mašenja uparjalnikov na stanje sveže pare na vstopu v turbino. Z večjo stopnjo mašenja se poveča specifičen volumen sveže pare in s tem pretočne hitrosti v vstopnem kanalu. Spremenjene kinematične razmere pa vplivajo tudi na notranji izkoristek posameznih stopenj.

Keywords

magistrske naloge;jedrske elektrarne;parne turbine;degradacija sistemov;tokovne razmere sekundarnega kroga;trikotniki hitrosti;ekspanzijske krivulje;

Data

Language:	Slovenian
Year of publishing:	2025
Typology:	2.09 - Master's Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[A. Šiško]
UDC:	621.165:532.57:621.311.25(043.2)
COBISS:	246825731
Views:	77
Downloads:	18
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Flow conditions in the inlet stages of the high pressure steam turbine in a nuclear power pant with a pressurized water reactor
Secondary abstract:	Nuclear power plant operation extensions are very important steps towards low-carbon energy generation in future years. The background of this procedure contains many maintenance activities and technological upgrades, which consequently contribute to reliable NPP operation. In the scope of this thesis we analyzed high-pressure steam turbine replacement and power upgrade. We determined how steam generator tube plugging procedure affects main steam parameters at the inlet stages. By increasing the percentage of plugged U-pipes, the specific volume increases, resulting in higher steam flow velocity. Furthermore, we concluded that different flow conditions affect the expansion curve and expansion efficiency of individual stages.
Secondary keywords:	master thesis;nuclear power plant;steam turbines;system degradation;secondary loop flow conditions;velocity diagrams;expansion curves;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Thesis comment:	Univ. Ljubljana, Fak. za strojništvo
Pages:	XX, 56 str.
ID:	27205356