Calculation of friction coefficients in journal bearings to determine the turning gear motor power

A. P. Manoj Kumar, Nagaraj S. Nayak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Steam turbine turning gear is a gear train, driven by electric motor, which is used to drive the rotor at a given speed and capable of breaking away the turbine and its load equipment from a standstill. Steam turbine rotor trains are supported by journal bearing which require lube oil for cooling. The normal turning gear operation requires that lube oil and the lift oil systems must be inservice in order to reduce the friction coefficient at the journal bearings during breakaway. The rotor train breakaway and running torque is the resisting moments at each of the journal bearings. The resisting moments at each journal bearing are functions of bearing loading, pad type, journal diameter and friction. Therefore, it is important to determine the static and dynamic coefficient of friction in journal bearings of the rotor system to design the turning gear motor power. In the present work, a detailed study has been made for calculating the static and dynamic friction coefficients in the bearings and validated the values with experiments for designing a suitable motor to run the rotor of a steam turbine.

Original languageEnglish
Title of host publicationMechanical and Aerospace Engineering
Pages869-873
Number of pages5
DOIs
Publication statusPublished - 31-12-2012
Externally publishedYes
Event2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012 - Paris, France
Duration: 07-07-201208-07-2012

Publication series

NameApplied Mechanics and Materials
Volume232
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012
CountryFrance
CityParis
Period07-07-1208-07-12

Fingerprint

Journal bearings
Gears
Rotors
Friction
Bearings (structural)
Steam turbines
Bearing pads
Electric motors
Turbines
Torque
Cooling
Oils
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Manoj Kumar, A. P., & Nayak, N. S. (2012). Calculation of friction coefficients in journal bearings to determine the turning gear motor power. In Mechanical and Aerospace Engineering (pp. 869-873). (Applied Mechanics and Materials; Vol. 232). https://doi.org/10.4028/www.scientific.net/AMM.232.869
Manoj Kumar, A. P. ; Nayak, Nagaraj S. / Calculation of friction coefficients in journal bearings to determine the turning gear motor power. Mechanical and Aerospace Engineering. 2012. pp. 869-873 (Applied Mechanics and Materials).
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Manoj Kumar, AP & Nayak, NS 2012, Calculation of friction coefficients in journal bearings to determine the turning gear motor power. in Mechanical and Aerospace Engineering. Applied Mechanics and Materials, vol. 232, pp. 869-873, 2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012, Paris, France, 07-07-12. https://doi.org/10.4028/www.scientific.net/AMM.232.869

Calculation of friction coefficients in journal bearings to determine the turning gear motor power. / Manoj Kumar, A. P.; Nayak, Nagaraj S.

Mechanical and Aerospace Engineering. 2012. p. 869-873 (Applied Mechanics and Materials; Vol. 232).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Manoj Kumar AP, Nayak NS. Calculation of friction coefficients in journal bearings to determine the turning gear motor power. In Mechanical and Aerospace Engineering. 2012. p. 869-873. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.232.869