Browse Prior Art Database

Double Inlet Pump

IP.com Disclosure Number: IPCOM000074568D
Original Publication Date: 1971-May-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Gupta, OR: AUTHOR [+2]

Abstract

A double inlet pump is provided which is immersed in a fluorocarbon liquid for operation. The rotor of the pump is supported by two graphite bearings, one on each end. The twin inlet, one on each end, assures the axial thrust balancing of the pump. It also provides operation with a low net positive suction head.

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Double Inlet Pump

A double inlet pump is provided which is immersed in a fluorocarbon liquid for operation. The rotor of the pump is supported by two graphite bearings, one on each end. The twin inlet, one on each end, assures the axial thrust balancing of the pump. It also provides operation with a low net positive suction head.

A wound stator 11 is mounted in main body 12. The main body and the inner bore of the stator are machined carefully to give concentricity. Rotor 13 has an impeller 14 at each end. The outside surface of the impeller provides the proper bearing surface for the graphite bearings. The pump has two casings 15, one on each end of the main body. Graphite bearings 16 are located in casings 15, as shown. The graphite bearings can be removed from the casing by removing holder 17. If the impeller 14 on one end is righthanded, then the impeller on the other end has to be lefthanded. The graphite bearings take up the radial load on startup and shutdown only. There is actually no axial load on the rotor of the pump.

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