Patent ID: 9587509
Date: 2017-03-07
CPC Classifications: F01D,F04D,F05D

Claim:
1. A structural assembly for a fluid-flow machine comprising: a main flow path boundary confining a main flow path of a fluid-flow machine, where a row of blades each with one blade end is arranged in the main flow path, where a gap exists between the blade ends of the at least one row of blades and the main flow path boundary, and where there is a rotating relative movement between the blades of the row of blades and the main flow path boundary, a secondary flow duct, having in the main flow path boundary two openings, one opening each at ends spaced apart in a flow direction, such that the secondary flow duct is connected to the main flow path via the two openings, a support component, a replaceable plug connected directly or indirectly to the support component, wherein the replaceable plug includes a part-section of the secondary flow duct, where the part-section complements at least one further part-section of the secondary flow duct extending outside the replaceable plug in the structural assembly such that the secondary flow duct is continuous between the two openings, wherein the support component is configured such that for fitting and removing of the replaceable plug, the replaceable plug is directly accessible from a side facing away from the main flow path, so that the replaceable plug is freely accessible and replaceable from the side of the support component facing away from the main flow path without dismantling other components of the structural assembly.