Research of temperature deformations of selflubricating tapered bearings of low-consumption rotor units
The use of self-lubricating bearing units of conical shape implemented according to the «rotaprint» lubrication scheme is promising in oil-free small-sized turbine units to provide a given resource. At the same time, an important issue, especially for microturbines, is to ensure the required tem...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2019-11-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2019/5%20(167)/21-27%20%D0%A0%D0%B0%D0%B9%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9D.%20%D0%90.,%20%D0%AE%D1%88%D0%B0%20%D0%92.%20%D0%9B.,%20%D0%A2%D1%80%D0%B5%D1%82%D1%8C%D1%8F%D0%BA%D0%BE%D0%B2%20%D0%90.%20%D0%92.%20%D0%B8%20%D0%B4%D1%80..pdf |
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| Summary: | The use of self-lubricating bearing units of conical shape
implemented according to the «rotaprint» lubrication scheme is
promising in oil-free small-sized turbine units to provide a given
resource. At the same time, an important issue, especially for
microturbines, is to ensure the required temperature regimes
and permissible temperature deformations. The paper proposes
a numerical method for calculating the conical bearing units
implemented under the scheme «rotaprint» with a different
number of smearing elements, which takes into account the
mutual influence of the operating modes of the turbine unit and
the cooling system of the bearing. The method consists of two
stages: the first one defines the temperature fields, then the results
are transferred as the initial data for the second stage – the
definition of the fields of thermal deformation. The results of the
deformation calculation serve as the initial data for the thermal
calculation of the adjusted geometric dimensions, thus an iterative
calculation to the desired convergence. The approbation is
performed and the results of the analysis of the temperature state
and temperature deformations for different angles of the cone of
the bearing unit with different number of smearing elements in
relation to the bearings both on the compressor side and on the
turbine side in their cantilever execution are presented. |
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| ISSN: | 1813-8225 2541-7541 |