Development and Testing for Turbines

Hydraulic development and model testing

Hydraulic design of Pelton, Francis, Kaplan, tubular, saxo included pump turbines based on 60 years experience gained from systematic research and fluid flow analyses.
Optimization of old turbine geometry in the process of refurbishment concerning efficiency, cavitation performances, capacity, vibration etc. with restriction of existing hydraulic shapes and in accordance with special customers' requests.
Model manufacturing Pelton, Francis, Kaplan, tubular, saxo and pump turbines.
Model testing of Pelton horizontal and vertical shaft turbines, Francis, Kaplan, bulb, pit and S-type turbine, saxo and pump turbines. Testing of hydraulic, energetic, cavitation, dynamic characteristics are performed as well as measurement of forces and torques.
Model acceptance tests in accordance with IEC 60193 Standard with in house calibration of all measuring devices.
Cavitation fundamental research by means of experimental and numerical methods.
Research and study of dynamic behaviour of the turbines in various operating regimes on the model and prototype and transfer the results from model to prototype.
Design and development of test rigs for model testing with own developed computer software.
Technical, engineering and technological consultancy in evaluation and appraisal of hydro turbines performances, performing independent testing of producer model and competitive model testing.

Acceptance tests after commissioning using up to 320 current meters for discharge measurement at low head Kaplan, tubular or Francis turbines pressure time method at middle head Francis turbines or thermodynamic method for direct efficiency measurement for high head Francis and Pelton turbines.
Efficiency measurements before and after refurbishment or general repair using one of the absolute methods for discharge measurement or index test method of efficiency measurement.
Efficiency and dynamic characteristics measurement (vibration, pressure pulsation, shaft displacement, noise) with the purpose of solving a particular problem in operation or characteristics correction.
Cavitation characteristics testing by vibration and noise measurement due to limitation of operation range or cavitation erosion reduction.
Governor acceptance and control tests.