| 摘要 |
The present invention relates to an impeller containment system for containi ng the burst of an impeller or the burst of impeller fragments from an impeller hub. The containment system utilizes a catcher (60, 62) extending from the shroud back plate (34) adjacent the impeller, which engages the snagger (50, 52) formed as a unitary part of the impeller. The catcher (60, 62) and snagg er (50, 52) cooperate to restrain a burst impeller or impeller fragments to the ir shortest radial distance from their point of burst. The system also includes a shroud (32), which circumferentially surrounds the impeller, and a diffuser (70), which circumferentially surrounds the radial tip portions of the impeller.
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