Page 6 - Energy_en

HYDROPOWER APPLICATION

The generation of hydroelectric power involves large quantities of water under high pres-
sure driving several water turbines and the associated generators. The job of regulating
and controlling these extremely high forces is done by the hydraulics.
To guarantee a shutdown in emergency situations too, hydraulic valves amongst other
things have been developed that are controlled by the applied water pressure.

HYDRAULIC TURBINE CONTROLLER
Hydraulic Francis turbine controller for continuous opera-
tion, 24 h / 365 days a year. Redundant pump circuits make
it possible to exchange pump units as well as filter elements
during running operation. The hydraulic control is mounted
on a 600 l tank and a stainless collecting tray. For emergency
shutdown, rapid NG25 DIN cartridges are integrated. In order
to position the turbine guide blades, a dynamic NG10 propor-
tional spool valve is used. The innovative and energy-efficient
concept with regulating pumps and accumulator elements is
combined with a very compact construction.

HYDRAULIC POWER UNIT FOR WATER CATCHMENT
The hydraulic power unit for a water catchment controls inlet
and outlet gates, de-sander and other shut-off devices of the
water catchment in a power station. Given the harsh envi-
ronmental conditions at altitudes of more than 2,000 m, all
pipes and sheet metal parts are made of stainless steel. With
their special surface coatings, all hydraulic valves meet high-
er corrosion protection requirements. All valves actuated by
solenoids are additionally equipped with star handle manual
overrides. The modular valve arrangement ensures that also
the manual operation of the unit is very clear. A pressure ac-
cumulator provides the energy to ensure continuous water
catchment operation also in the event of temporary power
failures.

SPECIALITIES
• Designed for the highest availability and continuous use for at least 40 years
• Special surface coatings for increased corrosion protection
• All valve functions are equipped with easy-to-operate manual overrides
• Very compact construction
• Redundant components to increase availability and the possibility of exchanging during running operation
• Stainless steel actuators for the pilot control of the hydraulics with water
• Water-pressure controlled stainless steel actuators for the pilot control of the hydraulic system control of ball valves in hydro-
electric power stations

PAGE 4 | WANDFLUH ENERGY | APPLICATION | HYDROPOWER