Advantages of solving the problem of turbine abrasion in the Burjar hydroelectric station by designing a sump

Abstract

Existing methods are considered for designing sedimentation tanks in the Burjar hydroelectric power station to solve the problem of abrasive wear of aggregates. Weighted sediments abrade the lining of derivational and station water conduits, as well as the working elements of hydraulic turbines. In the Burjar hydroelectric power station, there is a problem associated with the abrasive wear of the units. Abrasive wear of turbines leads to a significant drop in their efficiency, and therefore, a decrease in the power and energy generation of a hydroelectric power station, a reduction in the service life of hydroturbine equipment, and a fragment of wear. For the design of the sump, geological and hydrological information was collected about the Burjar hydroelectric power station. The sump is projected onto the derivation channel of the Burjar hydroelectric station. To determine the size of the sump, laboratory analysis of the water of the Burjar hydroelectric station was carried out. The hydraulic calculation of the sump includes determining the main dimensions of the chamber, sediment volume, flushing turbidity, and siltation time of the dead chamber volume with sediment. The calculation is described by the method of academician E.A. Zamarin. According to the method of E.A. Zamarin, the width of the chamber is 9.6 m and the length of the chamber is 73 m. These results are accurate and they were used during the design of the sump.