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US 10,502,217 B2Granted
Integrally geared compressor having a combination of centrifugal and positive displacement compression stages
AssigneeAtlas Copco Comptec, LLC
InventorsMichael Andrews, Todd Steven Abbot Gibbs
Life of this patent
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Abstract
A compressor including a gear system configured to be driven by a drive unit, a plurality of compression stages coupled to the gear system, wherein the plurality of compression stages includes at least one centrifugal compression stage and at least one positive displacement compression stage, is provided. Furthermore, an associated method is also provided.
Claims20
A compressor comprising:
- a gear system configured to be driven by a drive unit;
- a plurality of compression stages coupled to the gear system, wherein a gas discharged from a first compression stage is directed to a second compression stage:
- wherein the plurality of compression stages includes at least a centrifugal compression stage attached to a first end of a pinion shaft and at least a positive displacement compression stage attached to a second end of the pinion shaft along with a screw gearing, separate from the gear system, which allows for a speed adjustment of the positive displacement compression stage.
An integrally geared compressor having a gearbox, comprising:
- a drive gear, the drive gear including a drive shaft coupled to a drive unit;
- a first pinion gear meshed with the drive gear on a first side of the drive gear, the first pinion gear including a first pinion shaft;
- a second pinion gear meshed with the drive gear on a second side of the drive gear, the second pinion gear including a second pinion shaft;
- a third pinion gear meshed with the drive gear on a different plane than the first pinion gear and the second pinion gear, the third pinion gear include a third pinion shaft;
- a positive displacement compression stage coupled to:
- (i) the first pinion shaft, or (ii) the drive shaft, wherein the positive displacement compression stage includes a screw gearing separate from the drive gear that allows for a speed adjustment of the positive displacement compression stage;
- and
- a centrifugal compression stage coupled to the second pinion shaft.
5 more elements
A method comprising:
- combining at least one centrifugal compression stage and at least one positive displacement compression stage in an integrally geared compressor having a gear system configured to be driven by a drive unit, wherein the at least one centrifugal compression stage is attached to a first end of a first pinion shaft and the at least one positive displacement compression stage is attached to a second end of the first pinion shaft along with a screw gearing separate from the gear system that allows for a speed adjustment of the at least one positive displacement compression stage;
- wherein a gas discharged from the at least one centrifugal compression stage is directed to the at least one positive displacement compression stage.
Dependencies are inferred from the claim text.