Rotary kinetic fluid motors or pumps – Including means for handling working fluid leakage – Leakage through seal between runner or shaft and static part
Patent
1987-06-24
1989-03-28
Garrett, Robert E.
Rotary kinetic fluid motors or pumps
Including means for handling working fluid leakage
Leakage through seal between runner or shaft and static part
55189, 55201, F04D 900
Patent
active
048159328
ABSTRACT:
A priming device for a centrifugal pump includes a charging arm which has a first end portion for insertion into a liquid to be pumped and a second end portion remote therefrom and of a selected internal diameter. A vertically disposed suction tube extends coaxially from the second end portion. The upper end portion of the suction tube has constriction which reduces the tube internal diameter to less than the internal diameter of the charging arm. A plurality of slots are in the upper end portion for creating fine gas bubbles which flow into the suction tube when the pump is operated. An outer tube is disposed about the suction tube and therewith forms an annular space in which relatively large gas bubbles may rise. The outer tube includes an upper end section secured to the suction tube upper end portion and a lower end section extending below the lower end portion of the suction tube for thereby forming a bubble separator.
REFERENCES:
patent: 2849930 (1958-09-01), Freeman et al.
patent: 2989143 (1961-06-01), Hallstrom
patent: 3516229 (1970-06-01), Nakazawa et al.
patent: 4545788 (1985-10-01), Nineuil
patent: 4561866 (1985-12-01), Altmann et al.
Garrett Robert E.
Pitko Joseph M.
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