F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/116, 103/120
F04D 29/10 (2006.01) F04D 1/06 (2006.01) F04D 1/10 (2006.01) F04D 29/04 (2006.01)
Patent
CA 1096703
SEALING SYSTEM FOR USE IN COMPOSITE MULTI-STAGE PUMP Abstract of Disclosure: A sealing system for use in a composite multi- stage pump or pumps is disclosed which utilizes part of the liquid pressurized by the pump to moderate sealing conditions by introducing said liquid to a portion or portions around the shaft, where the sealing conditions are most critical, and by thus reducing the pressure imposed on the sealing portion make the designing of seals easy. Also, by introducing pressurized liquid of relatively low temperature to the critical portion(s), minimum flow rate is lowered and thus the operational range of the pump is extended. When two or more pumps are employed for maintaining continuous operation by alternately switching the working pumps, a flow passage is provided between the pumps so the pressurized liquid from the pump under operation can be introduced to the non-operating pump, thus utilizing the pressurized liquid to prevent liquid kept under pressure in the non-operating pump from leaking therefrom. -1-
285190
Jojima Toshio
Kato Muneo
Koizumi Tadashi
Oshida Hajime
Takano Shiro
Ebara Corporation
George H. Riches And Associates
Mitsui Toatsu Chemicals Inc.
Toyo Engineering Corporation
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