Patent ID: 11859621
Assignee: TRANE INTERNATIONAL INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A centrifugal compressor for compressing a fluid, comprising:
a first stage impeller;
a second stage impeller;
a plurality of guide vanes forming channels located between the first stage impeller and the second stage impeller, the channels configured to direct an interstage flow of the fluid from the first stage impeller to the second stage impeller;
a side stream injection port located between the first stage impeller and the second stage impeller, the side stream injection port configured to receive a side stream of the fluid;
a drive ring including radial shafts; and
a throttle ring configured to move through the side stream injection port between an extended position and a retracted position, the throttle ring including slots, the radial shafts of the drive ring extending through the slots in the throttle ring to form drive linkages, the drive linkages connecting the drive ring to the throttle ring such that rotation of the drive ring moves the throttle ring in an axial direction between the retracted position and the extended position, wherein
in the extended position, the throttle ring obstructs flow of the side stream of the fluid through the side stream injection port and partially obstructs the interstage flow of the fluid through the channels, and
in the retracted position, the throttle ring allows the side stream of the fluid to flow through the side stream injection port.