Multi-stage inline rotary pump

Details Multi-stage inline rotary pump Multi-stage inline rotary pump

1987-08-25

1989-06-27

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural rigidly related blade sets

4152141, F04D 1712

Patent

active

048424803

ABSTRACT:
A multistage in-line rotary pump which comprises a closed pump body, a base element provided with suction and delivery connectors, and a head element. The pump body is surrounded by a cylindrical jacket or casing spaced from the pump body to form an annular return space, which casing is clamped between the base and head elements by means of stay bolts. Flat joints are provided between the base and head elements and the respective axial ends of the casing. To prevent high areal compression stresses in the area of the flat joints, the two extremities of the casing are plastically deformed to obtain a wall thickness which is greater than the wall thickness of the rest of the casing tube.

REFERENCES:
patent: 1527471 (1925-02-01), Clinchy et al.
patent: 1648026 (1927-11-01), Murray
patent: 2753807 (1956-07-01), Lung
patent: 2902934 (1959-09-01), Louis
patent: 2957426 (1960-10-01), Miller
patent: 4116583 (1978-09-01), Budris
patent: 4134200 (1979-01-01), Frigo
Kreiselpumpen; Berechnung und Konstruktion--Adam T. Troskolanski und Stephan Lazarkiewicz.

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