BELZONA REPAIRS BROKEN HYDRO ELECTRIC TURBINE RUNNER

KHIA ID: 4674

Indústria: Power (POWR)
Inscrição: CEP-Centrifugal Pumps (CEP)
Substrato: Cast steel

Localização do cliente: Hydro Electric Plant, USA
Data de aplicação: May, 2007

Produtos:
Belzona® 1311 (Ceramic R-Metal) Belzona® 1321 (Ceramic S-Metal) Belzona® 1341 (Supermetalglide)

Problema: Loss of balance and horsepower.

Descrições da fotografia

Broken runner blade Expanded metal tack welded Blades rebuilt with Belzona® 1311 Completed application after coating runner

Situação do aplicativo

Wicket gate came loose and fell into turbine breaking three blades on runner.

Método de aplicação

Application was carried out in accordance with the Belzona Know-How System Leaflets CEP-1 & CEP-3. Expanded metal was tack welded in place before rebuilding with Belzona® 1311. Complete runner was coated with Belzona® 1311 and Belzona® 1341 was applied on top to improve fluid flow efficiency.

Fatos Belzona

The efficiency gain was so profound, that the customer was able to reduce the water setting from 70% to 62% without changing the power output from the runner, maintaining the 500 kW output. Using less water, the water behind the dam lasts longer, keeps the turbine running longer, resulting in increased revenue across a year. Belzona solution cost 9.2% of the conventional replacement by repairing the turbine instead of tearing it down and sending it out to be repaired. While the conventional repair would take 10 weeks of downtime, Belzona refurbishment took 2 weeks. The customer´s payback period on this repair was 3 months. Three years later and the turbines still have good horsepower with the runner blades still intact.

Ver PDF

baixar PDF