Jump to the main text

Hitachi Power Systems America, Ltd.

Hitachi

Hydro Rehabilitation Services

Hydro Rehabilitation

With superior technologies and proven worldwide experience, Hitachi offers reliable upgrade/refurbishment expertise toward hydroelectric generating equipment. Hardware supply, hydraulic laboratory testing, local field management and shop services provide a winning combination for Hitachi to perform every aspect of your next rehabilitation project.

  • Turbine upgrade performance studies
  • Runner replacement
  • Runner model fabrication and test
  • Upgrade to self-lubricated type bushings
  • Shaft seal improvement technology
  • For Kaplan and movable blade machines, upgrade to water filled hub
  • For spherical type inlet valves, improvements toward seal mechanisms and addition of locking device for upstream seal
  • For butterfly type inlet valves, improvements to Bi-plane type
  • Governor renovation from mechanical or electrical to digital type
  • Improvements in control philosophy on Pressure Relief Valves
  • Control System Component Upgrade
  • Additional auxiliary equipment supply
  • Generator stator/rotor rewind and/or re-powering (up-rating)
  • Design change of generator thrust bearing with Hitachi pivot spring type

Hitachi can provide every type of Hydroelectric Powerhouse equipment

Hydro Turbine Type

  • Pelton
  • Francis
  • Pump-Turbine
  • Adjustable-Speed Pump/Storage
  • Kaplan
  • Diagonal
  • Tubular
  • Bulb

Hydro Turbine Products

  • Spherical Valve
  • Butterfly Valve
  • Digital Governor
  • Generator
  • Generator-Motor
  • Control Systems
  • Excitation Systems

Engineering Assistance

  • Upgrade Performance Studies
  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM)
  • Model Runner Fabrication & Test