High-Pressure Liquid-Hydrogen and -Helium Pumps

Abstract

Recent developments in cryogenics and the growing use of hydrogen and helium have brought about increasing transport of these materials in liquid form. Since final use of these fluids very often demands storage as a high-pressure gas, it became necessary to develop means for transferring the fluids from the liquid transport vessels to high-pressure receivers. It can be shown easily that use of high-pressure liquid pumps and vaporizers offers by far the least expensive and most convenient way of accomplishing this transfer. To meet the recent demands, Linde Company has developed high-pressure hydrogen and helium pumps for discharge pressures as high as 6000 psi. Work on the helium pump has been carried out under contract for the U.S. Air Force. The development program has drawn heavily upon previous experiences gained during development of similar type high-pressure liquid-nitrogen pumps.