Pumps – Processes
Patent
1981-05-26
1984-03-13
Gluck, Richard E.
Pumps
Processes
417414, 310 87, F04B 3504, H02K 512
Patent
active
044364881
ABSTRACT:
A submersible pump assembly has pressure compensator features to avoid negative pressure at the top of the tool during installation. The submersible pump assembly has an electric motor contained within a lubricant filled motor chamber below a pump. A pressure compensator chamber is located below the motor chamber and separated by a partition. The pressure compensator chamber is also filled with lubricant. A passage bypasses the partition and leads to the motor chamber above the motor. A bellows is mounted in the pressure compensator chamber with its mouth facing upwardly. A port extends from the exterior of the pressure compensator chamber to the interior of the bellows for admitting well fluid. Also, the bellows may be filled with a heavy fluid during installation so as to retard contraction of the bellows if the tool is suddenly jerked to a stop. The bypass passage is not required in this embodiment.
REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 2002915 (1935-05-01), Mendenhall et al.
patent: 2682229 (1954-06-01), Luenberger
patent: 2854595 (1958-09-01), Arutunoff
patent: 2974240 (1961-03-01), Arutunoff
patent: 3072810 (1963-01-01), Luenberger
patent: 4230382 (1980-08-01), Mandell
Bradley James E.
Cuomo Peter M.
Felsman Robert A.
Gluck Richard E.
Hughes Tool Company
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