Use of high-strength steel for turbine penstocks at the nurek hydroelectric station

Abstract

1. A technology has been developed for the assembly and welding of penstocks made of high-strength steel 14Kh2GMR, which ensures that the required mechanical properties are obtained in the welded connections and that an adequate technological strength is achieved. 2. Mechanized equipment has been developed which meets the requirements of technological processes and ensures high-quality production of turbine penstocks out of high-strength steel. 3. A multiplicity of scientific-research work and experience accumulated with the use of steel 14Kh2GMR in fabricating the penstocks at the Nurek station, have shown the possibility of wide application of high-strength steels in hydrotechnical construction. The use of such steels instead of the usual low-alloy steels with a yield point of 30 to 35 kgf/mm2, widens the engineering possibilities in designs of modern large-capacity high-head hydroelectric stations.