Method and system of hydraulically-pressurizing natural gas at a

Details Method and system of hydraulically-pressurizing natural gas at a Method and system of hydraulically-pressurizing natural gas at a

1998-03-12

1999-06-01

Douglas, Steven O.

Dispensing

Gas or vapor dispensing

222389, 141 2, 141 18, 141 21, 141 25, B65B 104

Patent

active

059081414

ABSTRACT:
A method and system for re-fueling natural gas vehicles, at home, utilizing a hydraulic pressurization-chamber instead of a conventional mechanical compressor, to boost low-pressure gas (usually about 1 psi) up to the 3500-4000 psi required to re-fuel automotive equipment. This Residential Refueling Facility (RFF) will acquire natural gas from a residential public utility gas line into a flexible bladder located inside a steel high-pressure vessel where it will be pressurized by pumping a hydraulic fluid into the annulus between the outside of the bladder and the inside walls of the steel vessel. When the increased pressure reaches a level above the pressure existing in the on-board storage tanks on the vehicle being re-fueled, the gas in the bladder will be squeezed out to the on-board storage tank. The process is then repeated until the on-board storage tanks are filled.

REFERENCES:
patent: 5603360 (1997-02-01), Teel
patent: 5676180 (1997-10-01), Teel

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