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
• • 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
  • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
• • 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
  • F17C2205/0376—Dispensing pistols
• • 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
  • F17C2221/035—Propane butane, e.g. LPG, GPL
• • 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
  • F17C2223/0146—Two-phase
  • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
• • 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
  • F17C2265/00—Effects achieved by gas storage or gas handling
  • F17C2265/06—Fluid distribution
  • F17C2265/065—Fluid distribution for refuelling 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
  • F17C2270/0134—Applications for fluid transport or storage placed above the ground
  • F17C2270/0139—Fuel stations

Definitions

• LPG will be used to indicate various gaseous fuels which become liquid at relatively low pressures and substantially at room temperature, including e.g. butane, propane, et cetera.
• One 'Object of the present invention is to ' improve the background art.
• Another object is to provide a gun of the above type which is reliable and has a guaranteed operating quality over time. Such objects are achieved by a gun for dispensing gaseous fuel having the characteristics defined in the claims 1.
• figure 1 shows a vertical section view of a valve being part -of the gun for dispensing ⁇ gaseous- fuel according to the present invention, in a first configuration
• figure Ia shows a vertical section partial view of another version of the valve being part of the gun for dispensing gaseous fuel according to the present invention
• figure 2 shows a vertical section view of the valve of figure 1 in a second configuration
• figure 3 shows a vertical section view of the valve of figure 1 with the flow paths illustrated
• figure 4 shows a gun for dispensing gaseous fuel containing the valve of figure 1.
• Figure 1 partially illustrates a dispensing head 10 which is part of a gun P for dispensing gaseous fuel illustrated in figure 4, with the so-called European 5 type coupling to the filler.
• Figure Ia illustrates another version of the gun P with the dispensing head 10, with the so-called Italian type coupling to the filler.
• the dispensing head 10 substantially the same for the
• the head 10 which has a substantially radial symmetry around the X axis, comprises an
• the external cursor 70 moves axially above and around the sleeve 60. Sliding (towards the left in Figure 1)
• the head 62 marks the edge of an internal cylindrical cavity 61a, while the shank 64 marks the end of an internal cylindrical cavity 61b, of a smaller diameter.
• seals T are mounted which are in contact with the head 42 which isolate the two cavities 61a, 61b to form two isolated chambers for the LPG.
• T is used to indicate all O-rings or seals (or combinations thereof) present in the head 10.
• the head 42 and the shank 44 of the cursor 40 mark the edge of a cylindrical internal cavity, in the initial part of which are housed to seal the end part of the hollow conduit 24, the whole segment 26 and the seat 28.
• Seals T on segment 26 in particular divide the internal cavity in the shutter element 40 into two isolated sub-cavities 41a, 41b, forming two separate chambers for the LPG.
• the chamber 41a surrounds the conduit 24 and communicates both with the same conduit by means of through holes 51 made in the conduit 24 itself, and with the chamber 61a thanks to through holes 45 made in the head 42.
• the chamber 41b communicates with the chamber 61b through radial holes 47 made in the shank 44.
• the chamber 61a on the other hand is now in communication with the chamber 61b, as the rear portion of the head 62 no longer acts as a partition wall but - having been moved - has freed the common section to the two chambers 61a, 61b.
• the head 10 wor-ks as described below.- '
• the user must connect the head 10 (which will be contained in the gaseous fuel dispensing gun) to the filler- 12.
• the loading valve 92 is closed so the head 10 is isolated from the dispensing column. and the shutter element 40, pushed by the spring 90, is maintained in the position shown in figure 1, i.e. pressed against the edge 54.
• the user then moves the head 10 to the filler 12 to match it with the resting section 22 and align it with the conduit 24.
• the cursor 70 (through a mechanism which is not illustrated, e.g. a lever on the gun) is pushed towards the filler 12 in order to push the levers 16 to grip the filler 12 (figure 2) .
• the movement of the cursor 70 moves "the * end"96 -a"way from the stop 94, opening the valve 92.
• some LPG remains at a relatively low pressure, for example 4-5 bar.
• the LPG By pressing for example a filling button • on the column, the so-called “dead man” button, the LPG is forced under pressure (approx. 11-16 bar) into the head 10 through the valve 92.
• the increased pressure- of the LPG discharges once more on the crown CR, and this time overcomes the resistance of the spring 90 and by pu'shing moves the shutter element 40 (in Figures 1-3 to the left) , to reach the configuration shown in figure 2.
• the movement of the cursor 40 means that: the shank 44 is detached from the edge 54, leaving the internal section completely free for the flow of LPG; the head 42 moves to the left (in Figures 1-3) removing ⁇ the partition between the chambers ⁇ la and 61b, and the opening 69 is blocked, isolating the chamber 61a from the outside.
• the LPG therefore enters the head 10 from the valve 92, runs through the chambers 61b and 61a, comes into the chamber 41a through the holes 51, is sent, through the holes 51, into the conduit 24 from where it will reach the filler 12 and thus the tank to be filled.
• the arrows in figure 3 illustrate the path of the LPG.
• the user releases the button and the LPG pressure in the head 10 drops to the relatively low pressure indicated above, e.g. 4-5 bar.
• the spring 90 no longer has sufficient opposing force and pushes the shutter element 40 back to its initial position (as shown in figure 1) . Doing this, the chambers 61a, 61b are once more separated by the head 62, while the chamber 61a communicates with the atmospheric pressure through the holes 67 and the opening 69, which is once again free.
• the specific construction of the head 10 assures the automatic, very fast and repeatable commutation between the two end positions of the shutter element 40, which translates into a high-performing high dispensing rate whatever the refuelling column and its working pressure.
• the shutter element 40 is an automatic valve activated by two different LPG pressures: the pressure without the dispensing of the LPG, at relatively low pressure, for example 4-5 bar, which remains in the pipe which connects the dispensing column to the gun; and the higher pressure of LPG dispensing, for example • 11-16 bar.
• figure 4 illustrates the valve 10 associated to a grip to form a gun P to dispense the LPG.
• a lever L operated manually, the user can open or close the valve 92 and therefore start or end dispensing.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Nozzles (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=41319672

Family Applications (1)

Country Status (2)

Cited By (5)

Citations (7)

• 2009
  • 2009-03-10 IT IT000013A patent/ITPR20090013A1/it unknown
• 2010
  • 2010-03-10 WO PCT/IB2010/051041 patent/WO2010103476A1/en not_active Ceased

Patent Citations (7)

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