Abstract
Operating experience with different standard (ROU) and rapid (BROU) pressure-reducing and cooling units is examined. A scheme for updating standard ROU and BROU steam desuperheaters is proposed which avoids formation of stress concentrations and erosion washout of the parts by eliminating the rigid connection between the feeder element and the injector device: modernization of commercial steam inlet nozzles and injector regulator valves with multistep throttling of the working medium which ensures reliable, long duration operation with water feed from an electrical feed pump. For the modernized version it is proposed that the worm swirler be replaced by a bushing with a tangential fluid feed. Modernization can be done in the repair shops of operating power plants, as well as at the manufacturers' plants.
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