Apparatus for intermittent transfer of fluid having vapor trap s

Details Apparatus for intermittent transfer of fluid having vapor trap s Apparatus for intermittent transfer of fluid having vapor trap s

1993-08-23

1995-07-11

Bertsch, Richard A.

Pumps

Combined

417421, 4174241, 417420, 417901, 415 562, 4151691, 62 505, 62 506, F01D 1104, F04D 2908, F04D 2940

Patent

active

054315468

ABSTRACT:
Fluid transfer apparatus comprising a fluid reservoir and a pump connected to the reservoir by a supply line, wherein the apparatus is configured so that vapor generated in the pump during periods of inoperation may escape from the pump cavity through the pump inlet, rather than being trapped in the pump cavity, and liquid may flow into the pump cavity from the supply line through the pump inlet to replace escaping vapor, thereby providing reliable pump start-up during intermittent operation. The apparatus may be employed to pump LNG for fueling of vehicles. Where LNG or another cryogenic fluid is being pumped, the pump is preferably driven by a motor located above the pump and connected thereto by an elongated shaft. Shaft seals may be provided to prevent the fluid being pumped from contacting the motor or the bearings supporting the motor shaft. A vapor trap may be provided beneath the shaft seals to prevent contact between liquid being pumped and the shaft seals.

REFERENCES:
patent: 2291138 (1942-07-01), Blom
patent: 2447741 (1948-08-01), De Baufre
patent: 2518597 (1950-08-01), Brooks
patent: 3091183 (1963-05-01), Nahrgang
patent: 3157128 (1964-11-01), Hustinx
patent: 3238891 (1966-03-01), Thier
patent: 3323465 (1967-06-01), Stillebroer
patent: 3379132 (1968-04-01), Wagner
patent: 4418544 (1983-12-01), Heybutzki et al.
patent: 4684333 (1987-08-01), Hirakawa et al.
patent: 5242285 (1993-09-01), Westermann, Jr.
patent: 5315831 (1994-05-01), Goode et al.
Liquid Carbonic Cryogenic Fluid Pumping System, 1967.
Perry's Chemical Engineers' Handbook, Sixth Edition, Pumping of Liquids and Gases, pp. 6-4 through 6-10 (McGraw-Hill, Inc., 1984).
Elliott F. Wright; McGraw-Hill Encyclopedia of Science and Technology, Sixth Edition, Centrifugal Pump, vol. 3, pp. 390-392 (McGraw-Hill, Inc., 1987).
Elliott F. Wright; McGraw-Hill Encyclopedia of Science and Technology, Sixth Edition, Displacement Pump, vol. 5, pp. 358-360 (McGraw-Hill, Inc., 1987).
Marks' Standard Handbook for Mechanical Engineers, Eighth Edition, pp. 14-10 through 14-30 (McGraw-Hill, Inc., 1978).

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