Patent ID: 9556749
Date: 2017-01-31
CPC Classifications: F01D,F02C,F05D

Claim:
1. An exhaust gas housing for a gas turbine, the exhaust gas housing comprising: an annular gas passage, configured to discharge an exhaust gas from the gas turbine to the outside, wherein the annular gas passage is formed by a concentric inner casing and an outer casing which concentrically encompasses the inner casing at a distance, wherein the inner casing and the outer casing are interconnected by a plurality of radial struts which extend through the gas passage and include in each case a leading edge and a trailing edge with regard to the exhaust gas flowing through the annular gas passage, wherein the radial struts include a third heat-resistant lining, the outer casing includes a first heat-resistant lining, and the inner casing include a second heat-resistant lining, in each case towards the annular gas passage, wherein the third heat-resistant lining of the struts is at least partially mechanically decoupled from (i) the first heat-resistant lining, (ii) the second heat-resistant lining, or (iii) the first heat-resistant lining and the second heat-resistant lining for reducing thermal stress on a periphery of the struts; and at least one stress relief cut in the first heat-resistant lining or the second heat-resistant lining, the at least one stress relief cut extending around the leading edges and/or the trailing edges of the struts, each of the at least one stress relief cut of the leading edges or the trailing edges having a pair of ends, each of the pair of ends terminating in a hole of larger diameter for reducing mechanical stresses.