Sealing of the flow channel of a turbomachine

摘要

A turbomachine having a flow channel and a housing radially surrounding the flow channel, a plurality of stationary and moving blades being situated in the flow channel, stationary blades being situated adjacent to the moving blades in the axial direction, and the stationary blades having at least one stationary blade hook which engages with at least one housing hook for the purpose of connecting the stationary blades to the housing. A sealing and lining element is situated in the radial direction between the moving blades adjacent to the stationary blades and the housing, and has a sealing structure interacting with blade tips of the moving blades. A heat protection element is provided in the area between the sealing and lining element and the housing, and a sealing element being situated on the heat protection element for the purpose of sealing contact with the housing hook.

主权项

1. A turbomachine having a flow channel and comprising:
a housing radially surrounding the flow channel having at least one housing hook; a plurality of stationary and moving blades situated in the flow channel, the stationary blades being situated adjacent to the moving blades in an axial direction, and the stationary blades having at least one stationary blade hook engaging with the housing hook for the purpose of connecting the stationary blades to the housing; at least one liner situated in a radial direction between the moving blades adjacent to the stationary blades and the housing, the liner having a seal interacting with blade tips of the moving blades; at least one heat protector being in an area of the liner between the liner and the housing; and a further seal situated on the heat protector to create sealing contact with the housing hook, the heat protector having a higher thermal resistance than the further seal, wherein the heat protector is made of a material having higher thermal resistance properties than the further seal.