Patent ID: 9422822
Filing Date: 2016-08-23
CPC Classification: F01D,F02C,F05D

Claim Text:
1. A turbine of a power plant, preferably a steam turbine, the turbine comprising: a stator which has a housing and in the housing at least one stator blade carrier with stator blades, a rotor which has a rotor shaft with moving blades, at least one sealing device which seals the respective stator blade carrier axially with respect to the housing and separates two regions of different pressure from one another, the sealing device having a main sealing ring, which extends in the circumferential direction and acts axially and which confronts the region having the lower pressure, and an additional sealing ring, which extends in the circumferential direction and acts axially and which confronts the region having the higher pressure, wherein the main sealing ring is fixingly attached axially to the stator blade carrier and the additional sealing ring is attached axially movably to the stator blade carrier, the additional sealing ring being tensioned axially in the direction of the region having the higher pressure by at least one spring element wherein the main sealing ring is arranged on an annular shoulder projecting radially from the respective stator blade carrier and extending in the circumferential direction and has an axial sealing contour which cooperates with an axial countersealing contour formed on the housing wherein, the countersealing contour is formed in a reception groove which extends in the circumferential direction and into which the annular shoulder penetrates radially.