Multistage centrifugal compressor without seals and with axial thrust balance
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United States of America Patent
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Oct 25, 1994
Grant Date -
N/A
app pub date -
Nov 17, 1992
filing date -
Nov 17, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A modular multistage centrifugal compressor with plural rotors on a common drive shaft driven by a high speed drive. A throttled leakage path between adjacent stages of the compressor reduces the axial loading on the rotors, which have axial freedom on the common drive shaft, to essentially zero. This same throttled leakage path flows between stages in the area around the common drive shaft, eliminating the need for interstage shaft seals. The compressor accommodates a family of drive sources including motors, diesel and gas engines, CNG engines and direct drive turbines.
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