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Methodology for calculating hydrogenerators in strength problemsMethodology for Calculating Hydrogenerators in Strength Problems

Methodology for calculating hydrogenerators in strength problemsMethodology for Calculating Hydrogenerators in Strength Problems

Abstract

In the presented scientific work, the basic design versions of the thrust bearings of Hydrogenerators are considered. The main causes of emergencies in the thrust bearing unit of a high-power Hydrogenerator are considered. The main requirements for the operation of thrust bearings are submitted. Cause-and-effect relationships of emerging and development of defects are established. Existing methods for calculating the stressed state of a thrust bearing in the classical formulation for a stationary mode of operation are considered. The main features of the operation of the thrust bearing unit are investigated in relation to the features of the sliding bearings. The calculation of the elastic chambers of the hydraulic thrust bearing in a three-dimensional formulation is carried out, taking into account the physical properties of the oil, the material of the chambers and distribution of the acting loads. It is shown that the applied designs of Join Stock Company “Ukrainian Energy Machines” can be used in high-power Hydrogenerators.

У статті розглянуті основні причини вібрації у підп’ятнику гідрогінератора-двигуна потужністю 320 МВт. Розглянуті основні типи внутрішніх та поверхневих дефектів, що виникають на робочій поверхні диску підп’ятника у процесі довготривалої експлуатації. Представлено метод тривимірного моделювання подібних дефектів та запропонована оцінка напружено-деформованого стану диска підп’ятника, з урахуванням основних зусиль, що діють на робочу поверхню за допомогою метода скінченних елементів. Проведено аналіз можливої подальшої експлуатації дисків з подібними дефектами, відповідно до технічних вимог, та розглянуто шляхи їх усунення.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold