EP 2971770 A2 20160120 - NATURAL GAS COMPRESSION AND REFUELING SYSTEM AND METHOD
Title (en)
NATURAL GAS COMPRESSION AND REFUELING SYSTEM AND METHOD
Title (de)
SYSTEM UND VERFAHREN ZUR ERDGASKOMPRIMIERUNG UND -TANKUNG
Title (fr)
SYSTÈME ET PROCÉDÉ DE COMPRESSION ET DE RAVITAILLEMENT POUR GAZ NATUREL
Publication
Application
Priority
- US 201361783781 P 20130314
- US 2014029110 W 20140314
Abstract (en)
[origin: US2014271257A1] A refueling system for natural gas users (e.g., natural gas vehicles) includes a two-stage compression system that compresses low-pressure gas in a natural gas supply line to compressed natural gas (CNG) pressure for use by a user. A single motor drives both a first stage rotary compressor and a rotary hydraulic pump that powers a second-stage liquid piston compressor. The motor, first stage compressor, and pump may be co-axially aligned. Booster vessels store compressed gas to augment the system's compressed gas delivery flow rate when desired. The booster vessels may be recharged with compressed gas when the system is not delivering gas to a user. Hydraulic liquid may be pumped into and out of the booster vessels during booster vessel discharge and recharge, respectively, to maintain a desired pressure within the vessels.
IPC 8 full level
F04B 25/00 (2006.01); F04B 41/02 (2006.01); F04B 41/06 (2006.01); F17C 5/06 (2006.01)
CPC (source: EP US)
F04B 25/00 (2013.01 - EP US); F04B 41/02 (2013.01 - EP US); F04B 41/06 (2013.01 - EP US)
Citation (search report)
See references of WO 2014153110A2
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2014271257 A1 20140918; EP 2971770 A2 20160120; EP 2971770 B1 20190710; WO 2014153110 A2 20140925; WO 2014153110 A3 20141211
DOCDB simple family (application)
US 201414213597 A 20140314; EP 14720835 A 20140314; US 2014029110 W 20140314