EPJ Web of Conferences (Jan 2016)

Application of the balancing holes on the turbine stage discs with higher root reaction

  • Mrózek Lukáš,
  • Tajč Ladislav,
  • Hoznedl Michal,
  • Miczán Martin

DOI
https://doi.org/10.1051/epjconf/201611402080
Journal volume & issue
Vol. 114
p. 02080

Abstract

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The influence of the flow area of balancing holes in the discs of a steam turbine on its thermodynamic efficiency is examined for turbine stages operating in the increased root reaction regime. The interstage seal flooding with steam is modelled. The impact is given on stage reaction changes, on mass flow adjustments, and on overpressure operating in the rotor disc.