Centrifugal pump for handling of liquid chlorine

Details Centrifugal pump for handling of liquid chlorine Centrifugal pump for handling of liquid chlorine

1982-04-02

1986-06-24

Hornsby, Harvey C.

Rotary kinetic fluid motors or pumps

Including additional means causing or controlling fluid flow...

415170B, 415109, F04D 2908

Patent

active

045965102

ABSTRACT:
A machine for pumping liquid chlorine employs an upright shaft sump pump which is confined in a hermetically sealed housing and has a tubular supporting element surrounding the pump shaft. The latter is mounted in overhung position and is adjacent to a pressure pipe which conveys the pressurized liquid. The shaft seal is kept out of contact with the liquid by the housing as well as by a body of inert gas which is supplied to the interior of the housing and to the space between the shaft and the tubular element at a pressure depending on the pressure of inflowing liquid chlorine and being sufficiently high to prevent the inflow of liquid chlorine into the housing and/or tubular element when the pump is idle. The main impeller on the pump shaft is made integral with an auxiliary impeller which constitutes a hydrodynamic shaft seal and prevents the flow of conveyed liquid chlorine into the tubular element from below.

REFERENCES:
patent: 2949321 (1960-08-01), Tracy
patent: 3024734 (1962-03-01), Dickson et al.
patent: 3071384 (1963-01-01), Friberg
patent: 3610416 (1971-10-01), Otto
patent: 4239422 (1980-12-01), Clancey

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