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US 8,944,752 B2Granted
Compressor rectifier architecture
AssigneeTechspace Aero S.A.
InventorHervé Grelin
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AssigneeTechspace Aero S.A.
InventorHervé Grelin
Estimating the term…
The present invention relates to a turbomachine rectifier comprising a plurality of stator vanes (5) connecting an inner collar (4) to an outer collar (3), each of said vanes (5) comprising a blade (11) and a blade-head platform (10), comprising an intermediate piece (6) arranged between the inner collar (4) and the outer collar (3) and fastened to the outer collar (3), said intermediate piece (6) comprising openings (14) for the passage of the vane blades (11) and said vane platforms (10) resting, on one side, on the outer collar (3) and, on the other side, on the intermediate piece (6).
A turbomachine rectifier comprising a plurality of stator vanes (5) connecting an inner collar (4) to an outer collar (3), each of said vanes (5) comprising a blade (11) and a blade-head platform (10), an intermediate piece (6) arranged between the inner collar (4) and the outer collar (3) and fastened to the outer collar (3), said fastening being entirely outside a circumferential generatrix defined by outer edges of the platform, said intermediate piece (6) comprising openings (14) for passage of the blades (11) and said blade-head platforms (10) resting, on one side, on the outer collar (3) and, on another side, on the intermediate piece (6);
A turbomachine rectifier comprising a plurality of stator vanes (5) connecting an inner collar (4) to an outer collar (3), each of said vanes (5) comprising a blade (11) and a blade-head platform (10), an intermediate piece (6) arranged between the inner collar (4) and the outer collar (3) and fastened to the outer collar (3), said intermediate piece (6) comprising openings (14) for passage of the blades (11) and said blade-head platforms (10) resting, on one side, on the outer collar (3) and, on another side, on the intermediate piece (6);
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Specially adapted for elastic fluid pumps: bladed diffusers
Casings ; Casing parts, e.g. diaphragms, casing fastenings: fastening of diaphragms or stator-rings
Especially adapted for elastic fluid pumps: of an axial flow wheel
Of axial pumps: especially adapted for elastic fluid pumps
About 6 years 5 months of term left · ends 17 Mar 2033 (estimated)
The present invention relates to the field of turbomachines. It more precisely relates to a rectifier architecture in an axial turbomachine compressor.
Axial compressors are well known as such and are used in turbomachines, inter alia.
These low or high-pressure compressors comprise several stages of rotating vanes that are separated by fixed rectifier stages that aim to reposition the velocity vector of the fluid leaving the preceding stage before sending it to the following stage.
FIG. 1A shows a diagrammatic view of the traditional construction of a rectifier as in the state of the art, FIG. 1B shows a diagrammatic view of the architecture with a vane-support as in the invention.
FIG. 2 shows a diagrammatic view, along the axis of the engine, of the rectifier as in the invention.
FIG. 3 shows a partial cross-section view, along the axis of the engine, of the rectifier as in the invention.
1. Traditional diagrammatic architecture of a rectifier as in the state of the art 2. Diagrammatic architecture of a rectifier as in the invention 3. Outer collar 4. Inner collar 5. Stator vane 6. Rectifier-support, also called vane-support, intermediate piece or collar-support 7. Abradable of the outer collar 8. Fastening element 9. Shock-absorbing joint 10. Platform of the blade head vane 11. Blade of the vane 12. Assembly flange between outer collars 13. Zone of the vane-support intended to receive the abradable of the outer collar 14. Opening 15. Abradable of the inner collar
The present invention relates to a new compressor rectifier architecture. In a traditional construction 1, as mentioned above and diagrammatically illustrated in FIG. 1 on the left, the structural function is solely ensured by the outer collar 3. The architecture as in the present invention 2 is made up, for its outer collar, of a structural collar 3 and of a non-structural collar-support 6, which will indifferently be called vane-support, rectifier-support or intermediate piece.
The invention is based on a fastening device between the different elements. Each of the rectifier stages is made up of a combination of vanes connected together by the stator head rectifier-support, a rectifier-support or an inner collar at the foot. The rigidity of the assembly is then provided to the head by the outer collar whereas the connection between the vanes is ensured by the vane-support.