EP1837587A9 - Station for supplying pressurized gas to tanks, in particular tanks mounted on motor vehicles - Google Patents

Station for supplying pressurized gas to tanks, in particular tanks mounted on motor vehicles Download PDF

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Publication number
EP1837587A9
EP1837587A9 EP20070104310 EP07104310A EP1837587A9 EP 1837587 A9 EP1837587 A9 EP 1837587A9 EP 20070104310 EP20070104310 EP 20070104310 EP 07104310 A EP07104310 A EP 07104310A EP 1837587 A9 EP1837587 A9 EP 1837587A9
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EP
European Patent Office
Prior art keywords
motor
station
tanks
gas
oil
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.)
Granted
Application number
EP20070104310
Other languages
German (de)
French (fr)
Other versions
EP1837587A2 (en
EP1837587B1 (en
EP1837587A3 (en
Inventor
Luciano Ghergo
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.)
Gi & E SpA Unipersonale
Original Assignee
Gi & E SpA Unipersonale
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 Gi & E SpA Unipersonale filed Critical Gi & E SpA Unipersonale
Publication of EP1837587A2 publication Critical patent/EP1837587A2/en
Publication of EP1837587A9 publication Critical patent/EP1837587A9/en
Publication of EP1837587A3 publication Critical patent/EP1837587A3/en
Application granted granted Critical
Publication of EP1837587B1 publication Critical patent/EP1837587B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/036—Very high pressure, i.e. above 80 bars
    • 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
    • F17C2227/0164—Compressors with specified compressor type, e.g. piston or impulsive type
    • 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
    • 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
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion
    • 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

Definitions

  • the present invention relates to the technical field concerned with stations for supplying pressurised gas, e.g. methane to tanks, mounted in particular on motor vehicles.
  • pressurised gas e.g. methane
  • Stations of known type usually include an electric motor aimed at operating a multistage compression unit, which is supplied by the methane network at a pressure of about 8 to 10 bar, and supplies, in turn, a battery of tanks connected in parallel.
  • the battery acts as compensation device, which makes up for possible delays in the activation of the motor - compression unit assembly.
  • the Patent Application BO2003A 000061 refers to a station for supplying users' tanks with pressurised gas and resolves some important drawbacks of the prior art. It includes substantially: an electric unit, fed by an electric line for electric energy delivery, aimed at supplying at the outlet, an electric voltage of variable effective value and frequency, in accordance with the control and command signals issued by a command and control unit, to which it is connected; an electric motor powered by the electric unit; a compression unit, which is operated by the motor shaft, and whose inlet is connected to a low pressure methane network; a reference tank, connected to the supply of the compression unit; a device for delivering the pressurised gas, connected to the reference tank, and having a plurality of connectors, or delivery nozzles, which can be connected to as many users; a sensor for measuring pressure inside the reference tank, connected to the central unit.
  • the central unit is capable of comparing a selected pressure reference value with the pressure value measured by the sensor, and of controlling the electric unit in relation to the difference between the two values. This results in the activation of the compression unit, in which the working cycles in time unit depend on the effective value and frequency of the motor power voltage.
  • the main object of the present invention is to propose a station for supplying pressurised gas, in particular methane, to the tanks of motor vehicles, which allows to keep the electric apparatuses or devices, such as motors and the instrument panel for managing and controlling the compressor and auxiliary devices, in distinct environments, separated from the apparatuses which co-operate directly in carrying and compressing the gas supplied by the distribution net, so as to allow to observe the current regulations and to be innovative, reliable and which can be obtained with easily available and cheap elements, with the same safety degree with respect to the known solutions.
  • Another object of the present invention is to propose a station, whose total cost will turn out to be relatively low in any case, with respect to the advantages to be obtained.
  • an electric motor M is aimed at driving into rotation an oil-pressure pump P OL , which is aimed at feeding an oil pressure motor M OL through a hydraulic circuit 1, see Figure 1 .
  • the oil-pressure motor M OL is connected via the related shaft to a group C for compressing e.g. methane.
  • the inlet of the compression group C is connected to a low-pressure methane network RG, and its supply outlet is functionally connected to a device D for supplying the same higher pressure gas through a plurality of connectors or delivery gun, U 1 , U 2 , .., U N , which can be connected to as many users, that is motor vehicles tanks.
  • the electric motor M and the oil-pressure pump P OL are mounted inside a first environment A1, indicated with broken line, where also e.g. the instrument panel for managing and controlling the compressor and auxiliary devices, as well as the hydraulic unit, water pump of the cooling circuit and a related air-water exchanger (not shown, since known) are located.
  • a first environment A1 indicated with broken line, where also e.g. the instrument panel for managing and controlling the compressor and auxiliary devices, as well as the hydraulic unit, water pump of the cooling circuit and a related air-water exchanger (not shown, since known) are located.
  • the hydraulic motor M OL and the compression group C as a whole are situated inside a second environment A2, likewise indicated with broken line, in which also supply pulsation dampeners (not shown as known), a measure cabinet, additional circuits for oil and methane cooling, and the instrumentation and compressor managing electrical-instrumental parts, are located. Consequently, the electrical apparatuses and the electrical and electronic elements in the second environment A2 are reduced to the minimum.
  • the second environment A2 constitutes, according to the current regulations, the compressor house and thus it is contained in a metallic cabinet, approved as a first degree safety system (not shown).
  • the apparatuses and devices contained in the first environment A1 are functionally connected to those contained in the second environment A2, with which they co-operate to make the proposed supply station operate correctly: thus, due to the functional interposition of the hydraulic circuit 1, in which operate the oil-pressure pump P OL and the hydraulic motor M OL , the energised parts (first environment A1) are completely separated from the areas containing gas (second environment A2).
  • the second environment A2 results more compact and the so-called "danger area” is reduced, and consequently, the first environment A1 must be protected only from the weather, which could be achieved simply by e.g. installing it under a roof.
  • a bypass channel 2 can connected in parallel with the oil-pressure motor M OL , that is upstream and downstream thereof, and a device 3 can be functionally connected to the channel 2 for adjusting the quantity of fluid to be conveyed inside the latter (null or a part of the quantity of fluid circulating inside the hydraulic circuit 1) and otherwise aimed at feeding the oil-pressure motor M OL . Due to this contrivance, it is possible to modulate the power of the hydraulic motor M OL according to the time-by-time delivery needs, that is to adjust the number of revolutions of the compressor of the group C, according to the number of users connected to the delivery guns U 1 , U 2 , .., U N .
  • the configuration of the proposed station allows to use a gas motor instead of the electric motor M, observing totally the current regulations, which would allow to save on the costs of the electric cabin installation. Further, the introduction of an electric current generator would make the supply station self-sufficient, because the connection to the electricity network could be avoided.
  • An advantage of the present invention lies in the fact that it has conceived a station for supplying pressurised gas, in particular methane, to tanks of motor vehicles, which includes two distinct environments A1, A2, in which the energised parts are separated from the areas containing gas, due to the functional interposition of the electric motor M and the compressor group C of a hydraulic circuit 1, in which operate the oil-pressure pump P OL and the hydraulic motor M OL .
  • the danger area is much smaller with respect to the known solutions, being limited only to the second environment A2.
  • the electric motor M and the instrument panel are situated in the first environment A1, in which no gas is contained and which, according to current regulations, can be simply protected only from the weather, therefore they can be of the most wide-spread type, without requiring the particular safety degree, which is obligatory for the apparatuses situated in the danger areas. Therefore, some elements of the station can be found easier and at a lower cost. Consequently, the costs of the first installation and of the periodic maintenance of the station and the considerable technical-functional advantages that are obtained, make the present invention reliable and particularly attractive from the safety and economic points of view.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

Station for supplying pressurised gas to tanks, in particular tanks installed on motor vehicles, of the type including a compression group (C), operated through transmission means by a motor (M), whose aspiration inlet is connected to a delivery net (RG) of the gas at low pressure, and whose delivery is functionally connected to a device (D) for delivering the gas at higher pressure by a plurality of connectors (U1, U2, .., UN), which can be connected to as many users. The transmission means include at least one oil-pressure pump (POL), operated by the shaft of the motor (M) and a hydraulic motor (MOL), fed by said the pump (POL) and driving into rotation the operation shaft of the compression group (C).

Description

  • The present invention relates to the technical field concerned with stations for supplying pressurised gas, e.g. methane to tanks, mounted in particular on motor vehicles.
  • Stations of known type usually include an electric motor aimed at operating a multistage compression unit, which is supplied by the methane network at a pressure of about 8 to 10 bar, and supplies, in turn, a battery of tanks connected in parallel. When the pressurised gas is distributed to tanks of one or more motor vehicles, the battery acts as compensation device, which makes up for possible delays in the activation of the motor - compression unit assembly.
  • The Patent Application BO2003A 000061, owned by the same Applicant, refers to a station for supplying users' tanks with pressurised gas and resolves some important drawbacks of the prior art. It includes substantially: an electric unit, fed by an electric line for electric energy delivery, aimed at supplying at the outlet, an electric voltage of variable effective value and frequency, in accordance with the control and command signals issued by a command and control unit, to which it is connected; an electric motor powered by the electric unit; a compression unit, which is operated by the motor shaft, and whose inlet is connected to a low pressure methane network; a reference tank, connected to the supply of the compression unit; a device for delivering the pressurised gas, connected to the reference tank, and having a plurality of connectors, or delivery nozzles, which can be connected to as many users; a sensor for measuring pressure inside the reference tank, connected to the central unit. The central unit is capable of comparing a selected pressure reference value with the pressure value measured by the sensor, and of controlling the electric unit in relation to the difference between the two values. This results in the activation of the compression unit, in which the working cycles in time unit depend on the effective value and frequency of the motor power voltage.
  • Rules and guidelines fixed by the current regulations in this matter, national and supranational, and in this particular case concerning the delivery systems of methane for haulage, impose a series of measures to adopt when installing electric apparatuses (motor, electric central unit, instrument panel, etc.) in environments with explosion risk. Obviously, the observance of these rules requires enormous initial and periodical investments for the maintenance and the control of the parts considered at risk. Thus, the main object of the present invention is to propose a station for supplying pressurised gas, in particular methane, to the tanks of motor vehicles, which allows to keep the electric apparatuses or devices, such as motors and the instrument panel for managing and controlling the compressor and auxiliary devices, in distinct environments, separated from the apparatuses which co-operate directly in carrying and compressing the gas supplied by the distribution net, so as to allow to observe the current regulations and to be innovative, reliable and which can be obtained with easily available and cheap elements, with the same safety degree with respect to the known solutions.
  • Another object of the present invention is to propose a station, whose total cost will turn out to be relatively low in any case, with respect to the advantages to be obtained.
  • The above mentioned objects are obtained in accordance with the contents of the claims.
  • The characteristic features of the invention, not resulting from what has just been said, will be better pointed out in the following, in accordance with the contents of the claims and with the help of the enclosed figures, in which:
    • Figure 1 is a partial block diagram of the station proposed by the invention, showing the blocks which are considered the most significant;
    • Figure 2 is a partial block diagram of the station proposed by the invention, according to an embodiment, showing the blocks which are considered the most significant.
  • With reference to the enclosed Figures, an electric motor M is aimed at driving into rotation an oil-pressure pump POL, which is aimed at feeding an oil pressure motor MOL through a hydraulic circuit 1, see Figure 1. The oil-pressure motor MOL, in turn, is connected via the related shaft to a group C for compressing e.g. methane.
  • In known way, the inlet of the compression group C is connected to a low-pressure methane network RG, and its supply outlet is functionally connected to a device D for supplying the same higher pressure gas through a plurality of connectors or delivery gun, U1, U2, .., UN, which can be connected to as many users, that is motor vehicles tanks.
  • The electric motor M and the oil-pressure pump POL are mounted inside a first environment A1, indicated with broken line, where also e.g. the instrument panel for managing and controlling the compressor and auxiliary devices, as well as the hydraulic unit, water pump of the cooling circuit and a related air-water exchanger (not shown, since known) are located.
  • The hydraulic motor MOL and the compression group C as a whole are situated inside a second environment A2, likewise indicated with broken line, in which also supply pulsation dampeners (not shown as known), a measure cabinet, additional circuits for oil and methane cooling, and the instrumentation and compressor managing electrical-instrumental parts, are located. Consequently, the electrical apparatuses and the electrical and electronic elements in the second environment A2 are reduced to the minimum. Moreover, the second environment A2 constitutes, according to the current regulations, the compressor house and thus it is contained in a metallic cabinet, approved as a first degree safety system (not shown).
  • Therefore, the apparatuses and devices contained in the first environment A1 are functionally connected to those contained in the second environment A2, with which they co-operate to make the proposed supply station operate correctly: thus, due to the functional interposition of the hydraulic circuit 1, in which operate the oil-pressure pump POL and the hydraulic motor MOL, the energised parts (first environment A1) are completely separated from the areas containing gas (second environment A2). Advantageously, the second environment A2 results more compact and the so-called "danger area" is reduced, and consequently, the first environment A1 must be protected only from the weather, which could be achieved simply by e.g. installing it under a roof.
  • To boost the proposed station (see Figure 2) a bypass channel 2 can connected in parallel with the oil-pressure motor MOL, that is upstream and downstream thereof, and a device 3 can be functionally connected to the channel 2 for adjusting the quantity of fluid to be conveyed inside the latter (null or a part of the quantity of fluid circulating inside the hydraulic circuit 1) and otherwise aimed at feeding the oil-pressure motor MOL. Due to this contrivance, it is possible to modulate the power of the hydraulic motor MOL according to the time-by-time delivery needs, that is to adjust the number of revolutions of the compressor of the group C, according to the number of users connected to the delivery guns U1, U2, .., UN.
  • Moreover, the configuration of the proposed station allows to use a gas motor instead of the electric motor M, observing totally the current regulations, which would allow to save on the costs of the electric cabin installation. Further, the introduction of an electric current generator would make the supply station self-sufficient, because the connection to the electricity network could be avoided.
  • An advantage of the present invention lies in the fact that it has conceived a station for supplying pressurised gas, in particular methane, to tanks of motor vehicles, which includes two distinct environments A1, A2, in which the energised parts are separated from the areas containing gas, due to the functional interposition of the electric motor M and the compressor group C of a hydraulic circuit 1, in which operate the oil-pressure pump POL and the hydraulic motor MOL. In this way, the danger area is much smaller with respect to the known solutions, being limited only to the second environment A2. Actually, the electric motor M and the instrument panel are situated in the first environment A1, in which no gas is contained and which, according to current regulations, can be simply protected only from the weather, therefore they can be of the most wide-spread type, without requiring the particular safety degree, which is obligatory for the apparatuses situated in the danger areas. Therefore, some elements of the station can be found easier and at a lower cost. Consequently, the costs of the first installation and of the periodic maintenance of the station and the considerable technical-functional advantages that are obtained, make the present invention reliable and particularly attractive from the safety and economic points of view.

Claims (4)

  1. Station for supplying pressurised gas to tanks, in particular tanks installed on motor vehicles, of the type including a compression group (C), operated through transmission means by a motor (M), whose aspiration inlet is connected to a delivery net (RG) of said gas at low pressure, and whose delivery is functionally connected to a device (D) for delivering said gas at higher pressure by a plurality of connectors (U1, U2, .., UN), which can be connected to as many users, characterised in that said transmission means include at least one oil-pressure pump (POL), operated by the shaft of said motor (M) and a hydraulic motor (MOL), fed by said pump (POL) and driving into rotation the operation shaft of said compression group (C), to allow the definition of a first environment (A1), housing said motor (M) and oil-pressure pump (POL), and of a second environment (A2), separated from the first environment (A1), containing said hydraulic motor (MOL), and the compression group (C).
  2. Station, according to claim 1, characterised in that the hydraulic circuit (1) connecting said oil-pressure pump (POL) and hydraulic motor (MOL) includes a bypass channel (2), connected in parallel with the same motor (MOL) and in that it includes a device (3), functionally connected to said bypass channel (2) and adjusting the quantity of fluid to be conveyed through the latter, which would otherwise feed said oil-pressure motor (MOL).
  3. Station, according to claim 1, characterised in that said motor (M) is an electric motor.
  4. Station, according to claim 1, characterised in that said motor (M) is gas-fed.
EP20070104310 2006-03-20 2007-03-16 Station for supplying pressurized gas to tanks, in particular tanks mounted on motor vehicles Not-in-force EP1837587B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20060196 ITBO20060196A1 (en) 2006-03-20 2006-03-20 STATION FOR SUPPLYING TANKS WITH GAS IN PRESSURE, IN PARTICULAR OF TANKS INSTALLED ON VEHICLES.

Publications (4)

Publication Number Publication Date
EP1837587A2 EP1837587A2 (en) 2007-09-26
EP1837587A9 true EP1837587A9 (en) 2008-02-27
EP1837587A3 EP1837587A3 (en) 2011-04-27
EP1837587B1 EP1837587B1 (en) 2012-06-06

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Family Applications (1)

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EP20070104310 Not-in-force EP1837587B1 (en) 2006-03-20 2007-03-16 Station for supplying pressurized gas to tanks, in particular tanks mounted on motor vehicles

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EP (1) EP1837587B1 (en)
ES (1) ES2388878T3 (en)
IT (1) ITBO20060196A1 (en)

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US5351726A (en) * 1993-09-27 1994-10-04 Wagner & Brown, Ltd. System and method for compressing natural gas and for refueling motor vehicles
DE19650999C1 (en) * 1996-11-26 1998-06-04 Mannesmann Ag Tap installation method for filling mobile gas tank
DE19843669C1 (en) * 1998-09-23 2000-03-16 Hermann Josef Winter Tap installation for filling gas tank with methane has gas accumulator and emission device for feeding gas into tank
GB9912233D0 (en) * 1998-12-04 1999-07-28 British Gas Plc Hydrualically driven compressor
DE10018612C1 (en) * 2000-04-09 2001-12-06 Winter Hermann Josef System for filling gas tanks
US6792981B1 (en) * 2003-04-09 2004-09-21 Praxair Technology, Inc. Method and apparatus for filling a pressure vessel having application to vehicle fueling

Also Published As

Publication number Publication date
EP1837587A2 (en) 2007-09-26
EP1837587B1 (en) 2012-06-06
ES2388878T3 (en) 2012-10-19
ITBO20060196A1 (en) 2007-09-21
EP1837587A3 (en) 2011-04-27

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