Very low NPSH cryogenic pump and mobile LNG station

Details Very low NPSH cryogenic pump and mobile LNG station Very low NPSH cryogenic pump and mobile LNG station

1998-06-20

1999-12-28

Doerrler, William

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

62 507, 62 555, 62 503, 62239, 623232, F17C 1300, F17C 904, F25B 2700

Patent

active

060065257

ABSTRACT:
A reciprocating cryogenic pump, suitable for medium and high pressures having very low net positive suction head (NPSH) requirements. The pump comprises a cylinder having both liquid inlets and vapor outlets, and two interacting pistons, each piston reciprocably movable within the cylinder, and each piston having flow conduits there through generally co-axial with the piston and with the cylinder. The conduit of one piston preferentially connects to the liquid inlets and the conduit of the other piston preferentially connects to the vapor outlets, which are at a higher elevation than the liquid inlets. Both conduits are selectively and mechanically opened to the pumping chamber by the reciprocating motion, and the pump is oriented to allow liquid flowing into the pumping chamber by the natural tendency of liquid to flow downwards and residual vapor to leave the pumping chamber by the natural tendency of vapor to flow upwards, an act that in encouraged by the conduit connecting to the vapor outlets being opened before the conduit connecting to the liquid inlets. One use of this pump is for any on-board, mobile (truck, rail or ship), LNG fuel systems for Diesel engines.

REFERENCES:
patent: 3011480 (1961-12-01), Tyree, Jr.
patent: 3023710 (1962-02-01), Tyree, Jr.
patent: 3263622 (1966-08-01), Tyree, Jr.
patent: 3277797 (1966-10-01), Tyree, Jr. et al.
patent: 3430576 (1969-03-01), Tyree, Jr.
patent: 3823568 (1974-07-01), Bijasiewicz et al.
patent: 4186562 (1980-02-01), Tyree, Jr.
patent: 4224801 (1980-09-01), Tyree, Jr.
patent: 4418544 (1983-12-01), Heybutski, et al.
patent: 4472946 (1984-09-01), Zwick
patent: 4593835 (1986-06-01), Kikkawa et al.
patent: 4792289 (1988-12-01), Nieratschker
patent: 4860545 (1989-08-01), Zwick
patent: 4995234 (1991-02-01), Kooy et al.
patent: 5188519 (1993-02-01), Spulgis
patent: 5511955 (1996-04-01), Brown et al.
patent: 5513961 (1996-05-01), Engdahl, et al.
patent: 5537828 (1996-07-01), Borcuch, et al.
patent: 5575626 (1996-11-01), Brown, et al.
patent: 5819544 (1998-10-01), Andonian
patent: 5860798 (1999-01-01), Tschopp
George Acker, Jr., C. Everett Brett, Walter J. Schaetzle, Yeong K Song --"LNG (Liquefied Natural Gas) as a Fuel and Refrigerant for Diesel Powered Shrimp Boats" Amer. Soc. of Mech. Engineers (Paper No. 88 -Ice-21) NYC, NY.
Small Business Innovation Research, Program Solicitation Doe/ER-0686, Closing Date Mar. 3, 1997 U.S. Dept. of Energy, Office of Energy Research, Germantown, MD 20874-1290 p. 62.
"Liquid Natural Gas Fuel Systems" MVE, Inc., Bloominton, MN pp. 4 & 5.
"Net Positive Suction Head Requirements for Cryogenic Pumps" Data Book, P/N 10517513 Aug. 1996 MVE, Inc., New Prague, MN 56071 p. 27.

Affiliated with

Also associated with

Rating

Very low NPSH cryogenic pump and mobile LNG station does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Very low NPSH cryogenic pump and mobile LNG station, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Very low NPSH cryogenic pump and mobile LNG station will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2374666