General Electric Company

Olav Rommetveit

Dennis Michael Gray

Krishnamurthy Anand

Warren Arthur Nelson

Hans Aunemo

Alain Demers

Daniel Jason Erno

Shashishekara Sitharamarao Talya

Elnar Mikal Sundsvold

Morten Bjerke

A Pelton turbine is disclosed that includes at least one needle valve injector assembly and at least one high efficiency injector assembly. The high efficiency injector assembly provides a generally unimpeded flow path for water from a distributor to a runner of the turbine. The high efficiency injector assemblies and needle valve injector assemblies are operated in cooperation to provide the overall desired flow rate through the turbine and to increase the efficiency of the turbine. A high efficiency injector assembly may be retrofitted for a needle valve injector assembly to improve the efficiency of existing turbine systems.

Pelton turbine system and method

Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.

Erosion resistant coatings and methods thereof

Growing community of inventors

Raade, Norway

Olav Rommetveit