| 摘要 |
The invention relates to the sealing of the cavity from which air is bled off to the cabin, which cavity is delimited, on the one hand, by the external shell ( 6 ) of the compressor and an annular structure ( 7 ) connected to the shell, and, on the other hand, by the external casing ( 12 ) of the diffuser grating and a strut ( 13 ) connected to said external casing and to an external engine casing shell ( 14 ), this external casing shell ( 14 ) being fastened to the annular structure ( 7 ) by bolting together flanges, using sealing means provided between the annular structure ( 7 ) and the external casing ( 12 ) of the diffuser grating. The sealing means comprise a split annular segment ( 50 ) whose radially internal part ( 51 ) is housed in a radially sliding and sealed manner in a groove ( 32 ) provided at the periphery of the upstream part ( 12 a) of the external casing ( 12 ) of the grating of the diffuser, the periphery ( 52 ) of said segment bearing on the internal surface ( 54 ) of a cylindrical sleeve ( 53 ) which is integral with the annular structure ( 7 ) and surrounds said segment ( 50 ).
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