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US 2024/0141900 A1Published application
Vertically suspended centrifugal pump with integral speed reducer
AssigneeCPC Pumps International
InventorZhengwang Li
Life of this patent
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Abstract
A vertically suspended centrifugal pump including a speed reducing system disposed between a first shaft and a second shaft to allow a speed differential between the first shaft and the second shaft.
Claims19
A vertically suspended centrifugal pump comprising:
- a speed reducing system disposed between a first shaft and a second shaft to allow a speed differential between the first shaft and the second shaft.
The vertically suspended centrifugal pump according to claim 6, wherein, during the operation of the vertically suspended centrifugal pump, the second stage is an impeller with a running speed above at or 3600 rpm.
A vertically suspended centrifugal pump comprising:
- a main shaft being driven at a first speed;
- a plurality of series stage impellers coupled to the main shaft;
- a speed reducing system comprising:
- a first pinion operably connected to the main shaft, configured to rotate at the first speed,
- a first set of gears meshed with the first pinion, configured to rotate at a second speed that is reduced from the first speed,
- a second set of gears meshed with a second pinion, configured to rotate at the second speed;
- a secondary shaft operably coupled to the second pinion of the speed reducing system, configured to rotate at the second speed;
- and
- a first stage impeller coupled to the secondary shaft.
6 more elements
A vertically suspended centrifugal pump comprising:
- a main shaft being driven at a first speed;
- a plurality of series stage impellers coupled to the main shaft;
- a speed reducing system comprising:
- a star gear operably connected to the main shaft, configured to rotate at the first speed,
- at least one planetary gear meshed with the star gear and a stationary gear, the at least one planetary gear configured to rotate at a second speed that is reduced from the first speed, and
- a carrier coupled to the at least one planetary gear, configured to rotate at the second speed;
- a secondary shaft operably coupled to the carrier, configured to rotate at the second speed;
- and
- a first stage impeller coupled to the secondary shaft.
6 more elements
A method comprising:
- disposing a speed reducing system between two separate shafts of a vertically suspended centrifugal pump to allow a speed differential between the two separate shafts.
Dependencies are inferred from the claim text.