EP1882879A2 - Système de remplissage pour véhicule fonctionnant au gaz naturel sous pression - Google Patents

Système de remplissage pour véhicule fonctionnant au gaz naturel sous pression Download PDF

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Publication number
EP1882879A2
EP1882879A2 EP06023853A EP06023853A EP1882879A2 EP 1882879 A2 EP1882879 A2 EP 1882879A2 EP 06023853 A EP06023853 A EP 06023853A EP 06023853 A EP06023853 A EP 06023853A EP 1882879 A2 EP1882879 A2 EP 1882879A2
Authority
EP
European Patent Office
Prior art keywords
gas
refueling
engine
compressor
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06023853A
Other languages
German (de)
English (en)
Inventor
Mehrdad Memarzadeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1882879A2 publication Critical patent/EP1882879A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/002—Automated filling apparatus
    • F17C5/007—Automated filling apparatus for individual gas tanks or containers, e.g. in vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0364—Pipes flexible or articulated, e.g. a hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0344—Air cooling
    • F17C2227/0346—Air cooling by forced circulation, e.g. using a fan
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0348—Water cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/038—Detecting leaked fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/065—Fluid distribution for refueling vehicle fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0178—Cars

Definitions

  • This invention relates to a refueling system for motor vehicles that operate on compressed natural gas (CNG).
  • CNG compressed natural gas
  • a system consisting of a compressor that is installed on the engine of the vehicle and delivers high-pressure gas to the storage reservoir of gaseous fuel motor vehicle and monitoring and control elements that allow the equipment to operate in an unattended manner.
  • CNG natural gas
  • Private natural gas refueling stations have generally been too expensive to be attractive to private operators of one or two natural gas vehicles.
  • the present invention addresses all of these objectives.
  • the invention relates to a system for refueling gaseous fuel motor vehicles with low pressure gas inlet (4-6 bars).
  • the invention comprises: 1) a multi-stage gas compressor coupled with an electric clutch to the engine of the vehicle; 2) a cooling and dehydration unit which is connected to the water cooling circuit of the vehicle ; 3) a low pressure gas supply (4-6bar) with minimum 100 m 3 /h gas follow hose connected to the control valve ; 4) an external solenoid shut off valve; 5) a connection hose between external solenoid shut off valve and the low pressure gas inlet of the vehicle; 6) monitoring and control elements that allow the system to operate in an unattended manner.
  • the cooling system for the refueling equipment comprises a water inlet, which takes the cold water from the water pump of the vehicle and circulates it in passage ways around the cylinders of the compressor and dehydration units of the system and retunes it from the outlet of the system to the radiator of the vehicle.
  • Natural gas has a little vaporized water solved in it. When compressing gas the water will distill and saturated. If this saturated water is not separated from the gas it will cause some malfunctions in the vehicle's engine. Dehydration units separate dissolved water of the compressed gas and also cool down the temperature of it between stages of compression.
  • the ventilation system for the refueling equipment comprises a housing around the compressor and dehydration unit with an air inlet, a fan and an air outlet to provide an air circulation zone around the unit for ventilation.
  • the appliance incorporates an input line pressure sensing means that detects the coupling of the input connector to the gas line.
  • This gas sensing means can sense the absence of source gas pressure and provide a signal for the appliance to be shut off. Consequently, if the inlet hose is disconnected, the appliance will not inadvertently introduce compressed air into the motor vehicle's fuel reservoir.
  • low engine speed 1000 RPM
  • initial compression can be effected with a high engine speed (3000 RPM).
  • engine speed is reduced (1500 rpm) in order to moderate ring wear. This procedure is adopted based on the finding that the wear rate of the sealing rings within the compressor cylinders increases when the compressor system is operated at high speed against a high-back pressure.
  • This unit takes the input signals from the input pressure sensor, gas detector sensor, reservoir pressure sensor and control panel and controls the electric clutch, external solenoid shut off valve and engine speed control solenoids.
  • This unit takes the commands of operator from the control panel and manages the process of refueling and with monitoring pressure and gas detecting sensors stops the compressor and shots off the inlet control valve of gas and displays the cause of malfunction of the system.
  • FIG. 1 the LPRS equipments are shown installed in a natural gas fueled vehicle.
  • the connecting hose 4 is connected to the vehicle and connecting cable 6 is plugged in to the vehicle.
  • the manual valve 2 is turned on and the engine of the vehicle is started in idle mode.
  • the low pressure gas comes though the gas pipeline network and passes though an external solenoid shut off valve 3 and is connected with a hose 4 to the low pressure gas inlet 5 of the vehicle by means of a special removable sealed connector.
  • the low pressure gas after passing though a gas filter 7 and a sensor of gas pressure 8 is taken to the first stage of the compressor 10. After each stage of compression the compressed gas passes though a cooling and dehydration unit 11 in order to exhaust the heat produced due to compression of the gas and separating saturated water content of it. After 3 or 4 stages of compression the highly pressurized gas passes though the directional valve 22 and with high pressure steel pipe 24 is discharged to the gas reservoir 26 of the vehicle.
  • the pressure gage 26 is connected to the gas reservoir and monitors the pressures to the control unite. After passing one minute from the beginning of the refueling the speed control solenoid 27 increases the speed of the engine to 3000 RPM in order to increase the of speed of the refueling. When the pressure of the gas reservoir reaches the predetermined value the control unite decreases the engine speed to lower value in order to decrease of piston ring wearing again and after reaching the final pressure the control unit 8 turns off the shot off valve 3 and electrical clutch 13.
  • the air circulation fan 15 When starting the refueling system with opening of the shot off valve 3, the air circulation fan 15 is turned on and takes the outer air into the air circulation zone 14 of the refueling system. In case of gas escape the flammable gas detector 17 which is situated near the air outlet 16 will activated and the control unit immediately stop the refueling procedure and inform the operator.
  • the cooling liquid comes though the hose 18 from water pomp 20 into the water circulation circuit of compressor 10 and gas cooling unite 11 and after absorbing the heat of the system from hose 19 gets into radiator and passes the heat of the system into the air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP06023853A 2006-07-01 2006-11-16 Système de remplissage pour véhicule fonctionnant au gaz naturel sous pression Withdrawn EP1882879A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IR1385014945 2006-07-01

Publications (1)

Publication Number Publication Date
EP1882879A2 true EP1882879A2 (fr) 2008-01-30

Family

ID=83229108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06023853A Withdrawn EP1882879A2 (fr) 2006-07-01 2006-11-16 Système de remplissage pour véhicule fonctionnant au gaz naturel sous pression

Country Status (1)

Country Link
EP (1) EP1882879A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9316178B2 (en) 2013-02-27 2016-04-19 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University Internal combustion engine for natural gas compressor operation
US9528465B2 (en) 2014-04-02 2016-12-27 Oregon State University Internal combustion engine for natural gas compressor operation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9316178B2 (en) 2013-02-27 2016-04-19 State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State University Internal combustion engine for natural gas compressor operation
US9528465B2 (en) 2014-04-02 2016-12-27 Oregon State University Internal combustion engine for natural gas compressor operation

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