Patent ID: 9222370
Filing Date: 2015-12-29
Classification: F01D,F05D

Abstract:
1. A turbomachine, comprising: a rotor mounted rotatably about an axis of rotation; an internal inner casing arranged around the rotor; an external inner casing; and an outer casing being arranged around the internal inner casing and the external inner casing, wherein the turbomachine includes a first flow designed for high-pressure steam and a second flow designed for medium-pressure steam, the second flow being oriented opposite to the first flow, the first flow having a high-pressure inflow region and the second flow a medium-pressure inflow region, wherein the internal inner casing is arranged around the high-pressure inflow region and the medium-pressure inflow region, a cooling steam space is formed between the internal inner casing and the external inner casing sealed off with respect to a blading; a cooling steam flow line is provided for the inflow of cooling steam into the cooling steam space, wherein the cooling steam flow line is connected fluidically to the second flow, wherein the first flow has a high-pressure outflow region and the second flow a medium-pressure outflow region, and wherein the external inner casing extends from the high-pressure outflow region as far as the medium-pressure outflow region.