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Einstellungen

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1. US20060228216 - Rotor for a compressor

Anmerkung: Text basiert auf automatischer optischer Zeichenerkennung (OCR). Verwenden Sie bitte aus rechtlichen Gründen die PDF-Version.

[ EN ]

Claims

1. A rotor for a compressor, the rotor having predetermined material characteristics and the compressor having predetermined operating conditions, the rotor comprising:
a circumferential recess including side walls and two shoulders formed in said side walls, each shoulder having a shoulder depth;
a plurality of rotor blades arranged as a rim around a rotation axis of the rotor, each blade including a blade root which holds the rotor blades in the rotor circumferential recess;
wherein each blade root includes a widening lower part which engages behind the two shoulders of the side walls;
wherein the depth of the recess is substantially greater than a minimum recess depth (T min) such that the rotor has sufficient strength in the area of the blade attachment for starting based on said predetermined material characteristics of the rotor and the operating conditions of the compressor;
wherein the shoulder depth is sized to correspond to the recess depth, and wherein the rotor blade roots are sized to correspond to the recess depth.
2. The rotor as claimed in claim 1, wherein the recess depth is at least 10% greater than the minimum recess depth.
3. The rotor as claimed in claim 2, wherein the recess depth is about 40% greater than the minimum recess depth.
4. The rotor as claimed in claim 1, further comprising:
at least one cutout formed in each blade root to reduce weight.
5. The rotor as claimed in claim 4, wherein the at least one cutout comprises a hole in a blade root above the lower part which circumferentially passes through the blade root.
6. The rotor as claimed in claim 5, wherein the hole comprises an elongated hole extending radially.
7. The rotor as claimed in claim 4, wherein the at least one cutout comprises depressions on a lower face of the lower part of each blade root.
8. A compressor comprising:
a rotor as claimed in claim 1.
9. A gas turbine plant comprising:
a compressor according to claim 8.