EP3660381B9 - Fitting for liquefied gas bottles and filling method - Google Patents

Fitting for liquefied gas bottles and filling method Download PDF

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Publication number
EP3660381B9
EP3660381B9 EP19210220.0A EP19210220A EP3660381B9 EP 3660381 B9 EP3660381 B9 EP 3660381B9 EP 19210220 A EP19210220 A EP 19210220A EP 3660381 B9 EP3660381 B9 EP 3660381B9
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EP
European Patent Office
Prior art keywords
gas
fitting
refilling
opening
bottle
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.)
Active
Application number
EP19210220.0A
Other languages
German (de)
French (fr)
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EP3660381A1 (en
EP3660381B1 (en
EP3660381C0 (en
Inventor
Eckhard Tilhof
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.)
Cleantech Swiss AG
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Cleantech Swiss AG
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Publication of EP3660381C0 publication Critical patent/EP3660381C0/en
Publication of EP3660381B9 publication Critical patent/EP3660381B9/en
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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
    • 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
    • F17C13/04—Arrangement or mounting of valves
    • 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
    • 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
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0639—Steels
    • 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
    • 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
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • 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
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • 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
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • 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
    • F17C2223/04—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by other properties of handled fluid before transfer
    • F17C2223/042—Localisation of the removal point
    • F17C2223/046—Localisation of the removal point in the liquid
    • F17C2223/047—Localisation of the removal point in the liquid with a dip tube
    • 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
    • F17C2225/04—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by other properties of handled fluid after transfer
    • F17C2225/042—Localisation of the filling point
    • F17C2225/046—Localisation of the filling point in the liquid
    • F17C2225/047—Localisation of the filling point in the liquid with a dip tube
    • 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
    • F17C2227/04—Methods for emptying or filling
    • 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
    • F17C2270/07—Applications for household use
    • F17C2270/0709—Camping gas

Definitions

  • the invention relates to a fitting for liquid gas bottles and a method for refilling with liquid gas.
  • FR55136E reveals a fitting for a liquid gas bottle.
  • a gas cylinder is a pressure vessel, usually made of metal, usually steel, for the transport and storage of pressurized gases.
  • a pressure vessel usually made of metal, usually steel, for the transport and storage of pressurized gases.
  • Such a bottle can have a volume of more than 100 liters.
  • the nominal pressure can be several hundred bar.
  • Liquid gas cylinders contain gases such as LPG in liquefied form. Common gases are ethane, propane, butane and mixtures thereof. These gases can be liquefied at room temperature using comparatively low pressure.
  • the liquid gas content of such cylinders is usually between 3 and 33 kg.
  • the height of such liquid gas bottles is usually between 420 mm and 1290 mm.
  • the bottle diameter is typically between 200 mm and 318 mm.
  • Liquefied gas bottles are closed with a fitting to which, usually in conjunction with a pressure reducer, a suitable hose can be screwed on for the controlled removal of their contents. Furthermore, in the case of liquid gas bottles there is a safety valve in the extraction fitting, which limits the permissible excess pressure in the bottle to, for example, approx. 30 bar in order to prevent it from bursting.
  • a fitting of such a liquid gas bottle has a side connection piece as a gas tap, which is used on the one hand for filling and on the other hand for removal. Lines are screwed onto this gas tap manually both when withdrawing and when refilling.
  • the side connection piece When the gas tap is open, the side connection piece is connected to an opening on the underside of the fitting in a gas-conducting manner. This underside with the opening is located above the liquid level when a liquid gas bottle is set up. When gas is removed, the gas that is in the gaseous state above the liquid level is removed.
  • Liquefied gas bottles are used to operate gas stoves, gas cookers, gas grills, gas heaters or gas heaters. Is the contents of a liquid gas bottle consumed, LPG cylinders are returned by the consumer to the point of sale of LPG cylinders for refilling. After a liquid gas bottle has been returned in this way, it is transported from the point of sale to a central filling system or filling station.
  • An advantageous method for refilling includes the features of the secondary claim.
  • a fitting according to the claim comprises a gas tap for gas extraction and an opening for refilling a liquid gas bottle.
  • the opening for refilling a liquid gas bottle can be connected in a gas-conducting manner, in particular by opening a valve, to a tubular or tubular line of the fitting, which can extend at least 300 mm, preferably at least 400 mm, into a liquid gas bottle if the fitting is connected to such a gas bottle .
  • This ensures that the line can extend into the liquefied part of the gas, which above all enables very rapid emptying by pumping it out. It is necessary to empty it if a refilled gas bottle turns out to be leaking. This results in a speed advantage.
  • the fitting there is an opening at the bottom of the fitting adjacent to the tubular or tubular line.
  • the bottom is the side that is adjacent to the LPG bottle or is completely inside the bottle or bottle neck if the fitting is connected to a LPG bottle.
  • This opening on the underside can be connected to the gas tap in a gas-conducting manner, usually by turning a corresponding rotary handle.
  • the tubular or tubular line protrudes from this opening, preferably by at least 200 mm, particularly preferably by at least 300 mm.
  • the tubular or tubular line is therefore preferably so long that it extends to the bottom of a gas bottle connected to the fitting. As a rule, this cable is therefore no longer than 1290 mm.
  • the opening for refilling the liquid gas bottle is advantageously arranged on the top of the fitting. This makes refilling easier because a liquid gas bottle does not have to be aligned for refilling. In particular, automatic refilling in an automated filling station is possible with little technical effort.
  • the gas tap through which the gas is withdrawn for consumption, preferably protrudes laterally from the fitting.
  • the gas tap can preferably be opened and closed using a rotary handle or handwheel.
  • the handwheel is advantageously arranged around the feed for refilling. For example, a nut with a spindle is operated using the handwheel in such a way that a body intended for this purpose can be moved up and down. This opens or closes the gas tap.
  • the opening for refilling a liquid gas bottle can be opened and closed by a valve. This makes refilling easier and faster, as a liquid pressure can be enough to open the valve for refilling.
  • the valve preferably comprises a valve body which is pressed into its closed valve position by a preloaded spring. This helps to be able to open the valve for refilling using liquid pressure alone. In addition, emptying by pumping out is made easier because the valve can be opened through a nozzle or a mandrel of a suction head by connecting the suction head to the opening provided for this purpose. It can then be vacuumed immediately, which makes automated refilling possible, which can even be carried out by an end user, taking into account the increased safety effort that is then required.
  • the valve body is preferably a hollow cylinder that includes side openings.
  • the valve body can then advantageously be part of the line via which liquid gas is fed into the bottle for refilling or via which liquid gas is sucked out for emptying.
  • the valve body is preferably provided with a circumferential, replaceable sealing ring, which closes the valve in a liquid and gas-tight manner when closed. In the event of a leak, replacing the sealing ring is usually sufficient to restore the functionality of the fitting.
  • the sealing ring when the valve is closed, the sealing ring is pressed against a conical transition which connects a tubular section with a tubular section which is widened in relation to the latter.
  • a closing element in particular in the form of a hollow cylindrical section, is present, which interrupts a gas-conducting connection between the gas tap and the opening on the underside of the fitting, into which gas from a connected liquid gas bottle can flow, when the valve body is in its open state position is moved. In the event of emptying by pumping, this ensures that liquid is pumped out and not gas, which would delay the emptying.
  • the hollow cylindrical section is preferably a section of the line that connects the gas tap with an opening on the underside of the fitting into which gas from a connected liquid gas bottle can flow. This reduces the technical effort involved in manufacturing and also enables a compact design.
  • the opening for refilling a liquid gas bottle is preferably funnel-shaped to facilitate connection to a filling head or suction head by centering.
  • the fitting is advantageously designed in such a way that either gas can be removed via the gas tap or refilling or emptying can take place via the opening provided for this purpose. It cannot then be refilled at the same time and at the same time gas can be taken out via the gas tap. This avoids risks during gas withdrawal or refilling.
  • a further gas extraction option preferably via a quick coupling.
  • a hose can be connected to this additional gas extraction option for permanent, fundamentally unregulated gas extraction.
  • This additional gas extraction option is intended for balloonists to be able to permanently supply a flame with gas.
  • This flame serves, for example, as a pilot flame. This flame basically only requires a small amount of gas. It will be like this: B. prevents excessive gas from being consumed by turning the handwheel for the pilot flame too high. If a quick coupling is provided, gas extraction can only be made possible by connecting a corresponding coupling piece. This prevents accidental opening.
  • burst protection device that is destroyed if the internal pressure is excessively high in order to allow gas to escape in a controlled manner and thus reduce an internal pressure that is too high.
  • the Figure 1 shows a sectional view of a fitting 1 for a gas bottle.
  • a gas tap 2 with an external thread that projects laterally, namely horizontally, from a standing gas bottle (not shown) when the fitting 1 is connected to a gas bottle as intended.
  • the line of a gas consumer such as a gas grill, can be screwed onto the gas tap 2 to remove gas.
  • the funnel-shaped opening 3 In addition to the laterally projecting nozzle 2, there is a funnel-shaped opening 3 into the fitting 1 at the top.
  • the funnel-shaped opening 3 leading upwards serves as a central filling and suction point.
  • the funnel-shaped mouth or opening 3 is connected to a filling head or suction head of a gas filling station.
  • An externally accessible upper area of the outer wall of the central filling point has two circumferential grooves 4 to enable a positive grip with complementary shaped grippers of a filling head or suction head.
  • a positive connection can be created between the outer wall with the grooves 4 and a suction head or filling head during the filling or suctioning of gas in order to prevent an unplanned loosening of a head during the filling or emptying of a gas bottle.
  • a sealing ring 5 is held in the funnel-shaped opening 3 by a corresponding circumferential groove. A filling head or suction head is pressed against this sealing ring 5 during filling or emptying.
  • a hollow cylindrical valve body 6 has a sealing ring 7 in a lower region, which is held in a corresponding circumferential groove of the valve body 6.
  • the valve body 6 is biased towards the opening 4 by a spring 8.
  • the sealing ring 7 is pressed against a conical transition 9 to close the valve.
  • Access via the opening 4 into the fitting 1 is then as in the Figure 1 shown, sealed gas-tight and liquid-tight and more reliable and durable compared to that from the publication DE 43 34 182 A1 well-known ball valve of the central filling point. If the valve leaks due to fatigue, it is usually sufficient to simply replace the sealing ring 9.
  • valve body 6 is in the closed state of the valve as in the Figure 1 shown predominantly in a tubular section 10, the inside diameter of which corresponds to the outside diameter of the valve body 6. The valve body 6 is therefore guided through this tubular section 10.
  • the spring 8 is located in a tubular section 10 which is widened in comparison.
  • the tubular section 10 is connected by the conical transition 9 to a tubular section 11 which is widened in comparison thereto.
  • the inner diameter of the widened section 11 is slightly larger than the diameter of the spring 8. The widened section 11 therefore serves, among other things, the hold and guidance of the spring 8 when it is further tensioned to open the valve.
  • the hollow cylindrical valve body 6 is closed at the lower end with a rod 12.
  • the rod 12 extends into a cylinder 13.
  • the inside diameter of the cylinder 13 is larger than the outside diameter of the rod 12, so that a free space 14 remains between the cylinder 13 and the rod 12.
  • valve body 6 The end of the hollow cylindrical valve body 6 opposite the rod 12 is open.
  • valve body 6 has lateral openings 15 in the vicinity of the rod 12, which are connected to its interior in a gas-conducting manner or lead into its interior. If the valve body 6 is pressed downwards by fluid pressure or mechanically until the side openings 15 reach the widened section 11, the valve is open. The show the open state of the valve Figures 2 and 3 .
  • a rotary handle 16 also called a handwheel.
  • the cylinder 13 can be moved back and forth between a closed position and an open position.
  • the Figure 1 shows the closed position of the cylinder 13.
  • a sealing ring 17 at the lower end of the cylinder 13 is then pressed against a slope 18 for closure. This closure is canceled by moving the cylinder upwards by turning the rotary handle 16 accordingly.
  • the Figure 4 shows the open position of cylinder 13.
  • the cylinder 13 is sealed by sealing rings 19 from a section 21 of the housing wall of the fitting 1.
  • cylinder 13 is sealed by sealing rings 20 relative to a cylindrical lower section 22 of the rotary handle 16.
  • the sealing rings 19 and 20 prevent gas from escaping from the fitting.
  • the rotary handle 16 is held rotatably by a ball bearing 23.
  • a cap 24 is screwed onto the housing section 21 so as to rotatably connect the rotary handle 16 to the housing section 21.
  • the fitting 1 has two openings 25 and 26 on the underside (see in particular the three-dimensional representation of the Figure 5 ).
  • This underside is located in the gas bottle or in the bottle neck when the fitting is properly connected to a gas bottle.
  • the opening 25 is located at the lower end of a tubular or tubular line 27 at the bottom of a correspondingly connected gas bottle. After opening the valve with the valve body 6, the gas bottle is filled with gas or liquid gas is sucked out via this opening 25. Gas is removed from the bottle via the other opening 26 for consumption by a consumer connected to the gas tap 2, namely after opening the gas tap by turning the rotary handle 16 accordingly.
  • the opening 26 is connected to an inner opening 28 in a gas-conducting manner.
  • the lower end of the rod 12 is adjoined by a connected hollow cylindrical section 29, which is provided with an opening 30 in the transition area between the rod 12 and section 29. If the valve body 6 is pressed downwards, the hollow cylindrical section 29 is pressed against a sealing ring 31, which is located at the lower end of a guide 32.
  • valve 1 shows the case that valve 1 is closed. Suctioning or filling is not possible because the valve is closed. Gas extraction via the gas tap 2 is not possible because this is prevented by pressing the sealing ring 17 against the slope 18, so the gas tap is closed.
  • the Figure 2 illustrates the filling via the fitting 1.
  • the side connection 2 is closed and the funnel-shaped opening 4 is connected to a filling head, not shown, which is pressed liquid-tight against the sealing ring 5 in the funnel-shaped opening 3.
  • a gas-conducting connection between the gas tap and the opening 26 on the underside is interrupted. It is now liquid gas according to of the arrow 33 is pumped into the funnel-shaped opening 3.
  • the valve body 6 is pressed downward until the hollow cylindrical section 29 is pressed against the sealing ring 31.
  • the side openings 15 of the valve body 6 are now located in the widened tubular section 11.
  • the liquid gas pumped in along the arrow 33 can now exit from the openings 15 of the valve body 6 into the widened tubular section 11.
  • the liquid gas can flow around the lower section of the valve body 6, as the arrows 34 illustrate.
  • the liquid gas flows into the space 14 between the rod 12 and the housing section 21 and thus reaches the tubular or tubular line 27 as shown by the arrows 35 and 36.
  • the liquid gas then emerges from the fitting 1 according to arrow 37 and thus reaches the bottom of a gas bottle, not shown, to which the fitting 1 is attached.
  • the Figure 2 clarifies that the hollow cylindrical section 29 has a smaller outer diameter 38 in an upper region, in the case of Figure 2 to create such a distance from the adjacent inner housing wall in such a way that a gas flow according to arrow 36 is possible.
  • valve body 6 For suction or emptying, the valve body 6 is pressed down mechanically by a mandrel or nozzle of a suction head placed on the funnel 3. Liquid gas can then be sucked off according to arrows 39 to 43, as in the Figure 3 shown. Since suction is carried out from the ground due to the hose or pipe 27, this ensures that liquefied gas is removed and no gaseous atmosphere above the liquid level in the gas bottle. A liquid gas bottle can therefore be pumped out particularly quickly and with little effort.
  • the Figure 4 shows the fitting 1 in the open state of the gas tap 2 and in the closed state of the valve.
  • the gas tap 2 is open because the valve body 6 is in its closed position and the cylinder 13 is moved upwards by turning the unit 16 and therefore the sealing ring 17 has been removed from the slope 18.
  • the gas which is above the liquid level in the liquid gas bottle, can now enter the opening 26 according to the arrow 44 and flow to the internal opening 28.
  • the gas comes from the opening 28 according to the arrow 45 into the interior of the hollow cylindrical section 29.
  • the gas then exits via the opening 30 at the upper end of the hollow cylindrical section 29 and enters the intermediate space 14 according to the arrow representation 46. Since there is now a distance between the sealing ring 17 and the bevel 18, the gas can flow further into the connection of the gas tap 2 according to the arrow representation 47 and from here can be passed on to the consumer according to the arrow 48.
  • the refill procedure also includes emptying in the event a gas leak is detected. Emptying in particular can be done particularly quickly because liquid is pumped out and not gas.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lift Valve (AREA)

Description

Die Erfindung betrifft eine Armatur für Flüssiggasflaschen sowie ein Verfahren für ein Wiederbefüllen mit Flüssiggas.The invention relates to a fitting for liquid gas bottles and a method for refilling with liquid gas.

FR55136E offenbart eine Armatur für eine Flüssiggasflasche. FR55136E reveals a fitting for a liquid gas bottle.

Eine Gasflasche ist ein in der Regel aus Metall, regelmäßig aus Stahl, bestehender Druckbehälter für den Transport und die Lagerung von unter Druck stehenden Gasen. Eine solche Flasche kann ein Volumen von mehr als 100 Litern aufweisen. Der Nenndruck kann mehrere Hundert bar betragen.A gas cylinder is a pressure vessel, usually made of metal, usually steel, for the transport and storage of pressurized gases. Such a bottle can have a volume of more than 100 liters. The nominal pressure can be several hundred bar.

In Flüssiggasflaschen befinden sich Gase wie zum Beispiel LPG in verflüssigter Form. Übliche Gase sind Ethan, Propan, Butan sowie Gemische davon. Diese Gase können bei Raumtemperatur durch vergleichsweise geringen Druck verflüssigt werden. Der Flüssiggasinhalt von solchen Flaschen liegt in der Regel zwischen 3 und 33 kg. Die Höhe von solchen Flüssiggasflaschen liegt meist zwischen 420 mm und 1290 mm. Der Flaschendurchmesser liegt typischerweise zwischen 200 mm und 318 mm.Liquid gas cylinders contain gases such as LPG in liquefied form. Common gases are ethane, propane, butane and mixtures thereof. These gases can be liquefied at room temperature using comparatively low pressure. The liquid gas content of such cylinders is usually between 3 and 33 kg. The height of such liquid gas bottles is usually between 420 mm and 1290 mm. The bottle diameter is typically between 200 mm and 318 mm.

Flüssiggasflaschen werden mit einer Armatur verschlossen, an der sich, meist in Verbindung mit einem Druckminderer, eine passende Schlauchleitung zur kontrollierten Entnahme ihres Inhaltes anschrauben lässt. Des Weiteren befindet sich bei Flüssiggasflaschen in der Entnahmearmatur ein Sicherheitsventil, welches den zulässigen Überdruck in der Flasche auf zum Beispiel ca. 30 bar begrenzt, um ein Bersten zu verhindern.Liquefied gas bottles are closed with a fitting to which, usually in conjunction with a pressure reducer, a suitable hose can be screwed on for the controlled removal of their contents. Furthermore, in the case of liquid gas bottles there is a safety valve in the extraction fitting, which limits the permissible excess pressure in the bottle to, for example, approx. 30 bar in order to prevent it from bursting.

Typischerweise weist eine Armatur einer solchen Flüssiggasflasche einen seitlichen Anschlussstutzen als Gashahn auf, der einerseits zum Auffüllen und andererseits zur Entnahme verwendet wird. An diesen Gashahn werden Leitungen sowohl im Fall der Entnahme als auch im Fall einer Wiederbefüllung manuell aufgeschraubt. Der seitliche Anschlussstutzen ist bei geöffnetem Gashahn mit einer Öffnung an der Unterseite der Armatur gasleitend verbunden. Diese Unterseite mit der Öffnung befindet sich oberhalb des Flüssigkeitsspiegels im aufgestellten Zustand einer Flüssiggasflasche. Bei einer Entnahme von Gas wird daher das Gas entnommen, welches sich oberhalb des Flüssigkeitsspiegels im gasförmigen Zustand befindet.Typically, a fitting of such a liquid gas bottle has a side connection piece as a gas tap, which is used on the one hand for filling and on the other hand for removal. Lines are screwed onto this gas tap manually both when withdrawing and when refilling. When the gas tap is open, the side connection piece is connected to an opening on the underside of the fitting in a gas-conducting manner. This underside with the opening is located above the liquid level when a liquid gas bottle is set up. When gas is removed, the gas that is in the gaseous state above the liquid level is removed.

Flüssiggasflaschen werden für den Betrieb von Gasherden, Gaskochern, Gasgrills, Gasheizöfen oder Gasheizstrahlern eingesetzt. Ist der Inhalt einer Flüssiggasflasche verbraucht, so werden Flüssiggasflaschen vom Verbraucher an die Verkaufsstelle von Flüssiggasflaschen zwecks erneuter Auffüllung zurückgegeben. Nach einer solchen Rückgabe einer Flüssiggasflasche wird diese von der Verkaufsstelle zu einer zentralen Abfüllanlage bzw. Abfüllstation transportiert.Liquefied gas bottles are used to operate gas stoves, gas cookers, gas grills, gas heaters or gas heaters. Is the contents of a liquid gas bottle consumed, LPG cylinders are returned by the consumer to the point of sale of LPG cylinders for refilling. After a liquid gas bottle has been returned in this way, it is transported from the point of sale to a central filling system or filling station.

Um eine Wiederbefüllung zu erleichtern, ist aus der Druckschrift DE 43 34 182 A1 bekannt, zusätzlich zu einem seitlichen Anschlussstutzen bzw. seitlichen Gashahn eine zentrische Befüllstelle vorzusehen. Eine Befüllung kann dann von oben erfolgen, ohne dass ein Ausrichten eines seitlich abstehenden Gashahns erforderlich wäre.To make refilling easier, this is from the publication DE 43 34 182 A1 known to provide a central filling point in addition to a side connection piece or side gas tap. Filling can then take place from above without the need to align a gas tap that projects to the side.

Es ist Aufgabe der Erfindung, den technischen Aufwand für ein Wiederbefüllen von Gasflaschen zu verringern.It is the object of the invention to reduce the technical effort required for refilling gas bottles.

Die Aufgabe der Erfindung wird durch eine Armatur mit den Merkmalen des Hauptanspruchs gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den abhängigen Ansprüchen. Ein vorteilhaftes Verfahren für ein Wiederbefüllen umfasst die Merkmale des Nebenanspruchs.The object of the invention is achieved by a fitting with the features of the main claim. Advantageous refinements result from the dependent claims. An advantageous method for refilling includes the features of the secondary claim.

Eine anspruchsgemäße Armatur umfasst zur Lösung der Aufgabe einen Gashahn für eine Gasentnahme und einer Öffnung für ein Wiederbefüllen einer Flüssiggasflasche. Die Öffnung für ein Wiederbefüllen einer Flüssiggasflasche kann insbesondere durch Öffnen eines Ventils mit einer schlauchförmigen oder rohrförmigen Leitung der Armatur gasleitend verbunden werden, die wenigstens 300 mm, vorzugsweise wenigstens 400 mm, in eine Flüssiggasflasche hineinreichen kann, wenn die Armatur mit einer solchen Gasflasche verbunden ist. Hierdurch wird erreicht, dass die Leitung in den verflüssigten Teil des Gases hineinreichen kann, was vor allem ein sehr schnelles Entleeren durch Abpumpen ermöglicht. Ein Entleeren ist geboten, wenn sich eine wiederbefüllte Gasflasche als undicht erweist. Es ergibt sich so ein Geschwindigkeitsvorteil.To solve the problem, a fitting according to the claim comprises a gas tap for gas extraction and an opening for refilling a liquid gas bottle. The opening for refilling a liquid gas bottle can be connected in a gas-conducting manner, in particular by opening a valve, to a tubular or tubular line of the fitting, which can extend at least 300 mm, preferably at least 400 mm, into a liquid gas bottle if the fitting is connected to such a gas bottle . This ensures that the line can extend into the liquefied part of the gas, which above all enables very rapid emptying by pumping it out. It is necessary to empty it if a refilled gas bottle turns out to be leaking. This results in a speed advantage.

Grundsätzlich gibt es eine Öffnung an der Unterseite der Armatur benachbart zur schlauchförmigen oder rohrförmigen Leitung. Die Unterseite ist die Seite, die an die Flüssiggasflasche angrenzt bzw. sich vollständig in der Flasche oder im Flaschenhals befindet, wenn die Armatur mit einer Flüssiggasflasche verbunden ist. Diese Öffnung an der Unterseite kann mit dem Gashahn gasleitend verbunden werden, und zwar in der Regel durch Drehen eines entsprechenden Drehgriffs. Die schlauchförmige oder rohrförmige Leitung steht gegenüber dieser Öffnung vor und zwar vorzugsweise wenigstens um 200 mm, besonders bevorzugt wenigstens um 300 mm.Basically, there is an opening at the bottom of the fitting adjacent to the tubular or tubular line. The bottom is the side that is adjacent to the LPG bottle or is completely inside the bottle or bottle neck if the fitting is connected to a LPG bottle. This opening on the underside can be connected to the gas tap in a gas-conducting manner, usually by turning a corresponding rotary handle. The tubular or tubular line protrudes from this opening, preferably by at least 200 mm, particularly preferably by at least 300 mm.

Hierdurch wird erreicht, dass Gas oberhalb des Flüssigkeitsspiegels über den Gashahn entnommen werden kann und damit sofort in der Form vorliegt, in der das Gas im Falle eines Verbrauchs benötigt wird.This ensures that gas can be removed above the liquid level via the gas tap and is therefore immediately available in the form in which the gas is required in the event of consumption.

Die schlauchförmige bzw. rohrförmige Leitung ist daher vorzugsweise so lang, dass diese bis zum Grund einer mit der Armatur verbundenen Gasflasche reicht. In der Regel ist daher diese Leitung nicht länger als 1290 mm.The tubular or tubular line is therefore preferably so long that it extends to the bottom of a gas bottle connected to the fitting. As a rule, this cable is therefore no longer than 1290 mm.

Die Öffnung für ein Wiederbefüllen der Flüssiggasflasche ist vorteilhaft an der Oberseite der Armatur angeordnet. Dies erleichtert ein Wiederbefüllen, da eine Flüssiggasflasche nicht für ein Wiederbefüllen ausgerichtet werden muss. Insbesondere ist so mit geringem technischen Aufwand ein automatisches Wiederbefüllen in einer automatisierten Abfüllstation möglich.The opening for refilling the liquid gas bottle is advantageously arranged on the top of the fitting. This makes refilling easier because a liquid gas bottle does not have to be aligned for refilling. In particular, automatic refilling in an automated filling station is possible with little technical effort.

Der Gashahn, über den das Gas zwecks Verbrauch entnommen wird, steht vorzugsweise seitlich von der Armatur ab. Durch einen Drehgriff bzw. Handrad kann der Gashahn vorzugsweise geöffnet und geschlossen werden. Das Handrad ist vorteilhaft um die Zuführung für ein Wiederbefüllen herum angeordnet. Über das Handrad wird zum Beispiel eine Mutter mit Spindel betätigt und zwar derart, dass ein dafür vorgesehener Körper hoch und runter bewegt werden kann. Hierdurch wird der Gashahn geöffnet oder geschlossen.The gas tap, through which the gas is withdrawn for consumption, preferably protrudes laterally from the fitting. The gas tap can preferably be opened and closed using a rotary handle or handwheel. The handwheel is advantageously arranged around the feed for refilling. For example, a nut with a spindle is operated using the handwheel in such a way that a body intended for this purpose can be moved up and down. This opens or closes the gas tap.

Die Öffnung für ein Wiederbefüllen einer Flüssiggasflasche kann in einer Ausgestaltung durch ein Ventil geöffnet und geschlossen werden. Dies erleichtert und beschleunigt ein Wiederbefüllen, da ein Flüssigkeitsdruck genügen kann, um das Ventil für ein Wiederbefüllen zu öffnen.In one embodiment, the opening for refilling a liquid gas bottle can be opened and closed by a valve. This makes refilling easier and faster, as a liquid pressure can be enough to open the valve for refilling.

Das Ventil umfasst vorzugsweise einen Ventilkörper, der durch eine vorgespannte Feder in seine geschlossene Ventilstellung gedrückt wird. Dies trägt dazu bei, allein durch einen Flüssigkeitsdruck das Ventil für ein Wiederbefüllen öffnen zu können. Außerdem wird eine Entleerung durch Abpumpen erleichtert, da das Ventil durch einen Stutzen oder einen Dorn eines Absaugkopfes dadurch geöffnet werden kann, in dem der Absaugkopf mit der dafür vorgesehenen Öffnung verbunden wird. Im Anschluss daran kann sofort abgesaugt werden, was eine automatisierte Wiederbefüllung möglich macht, die selbst durch einen Endverbraucher unter Berücksichtigung eines dann erforderlichen erhöhten Sicherheitsaufwands vorgenommen werden kann.The valve preferably comprises a valve body which is pressed into its closed valve position by a preloaded spring. This helps to be able to open the valve for refilling using liquid pressure alone. In addition, emptying by pumping out is made easier because the valve can be opened through a nozzle or a mandrel of a suction head by connecting the suction head to the opening provided for this purpose. It can then be vacuumed immediately, which makes automated refilling possible, which can even be carried out by an end user, taking into account the increased safety effort that is then required.

Der Ventilkörper ist vorzugsweise ein Hohlzylinder ist, der seitliche Öffnungen umfasst. Der Ventilkörper kann dann vorteilhaft ein Teil der Leitung sein, über die Flüssigkeitsgas in die Flasche für ein Wiederbefüllen hineingeleitet wird oder über die Flüssigkeitsgas für ein Entleeren abgesaugt wird.The valve body is preferably a hollow cylinder that includes side openings. The valve body can then advantageously be part of the line via which liquid gas is fed into the bottle for refilling or via which liquid gas is sucked out for emptying.

Der Ventilkörper ist vorzugsweise mit einem umlaufenden, austauschbaren Dichtring versehen, der das Ventil im geschlossenen Zustand flüssigkeits- und gasdicht verschließt. Im Fall einer Undichtigkeit genügt in der Regel der Austausch des Dichtrings, um die Funktionstüchtigkeit der Armatur wieder herzustellen.The valve body is preferably provided with a circumferential, replaceable sealing ring, which closes the valve in a liquid and gas-tight manner when closed. In the event of a leak, replacing the sealing ring is usually sufficient to restore the functionality of the fitting.

Der Dichtring ist in einer vorteilhaften Ausgestaltung im geschlossenen Zustand des Ventils gegen einen konusförmigen Übergang gepresst, der einen rohrförmigen Abschnitt mit einem dem gegenüber verbreiterten rohrförmigen Abschnitt verbindet. Diese Ausgestaltung ermöglicht es, die beiden rohrförmigen Abschnitte als Zuleitung zu verwenden, um so kompakt mit geringem technischen Aufwand herstellen zu können.In an advantageous embodiment, when the valve is closed, the sealing ring is pressed against a conical transition which connects a tubular section with a tubular section which is widened in relation to the latter. This configuration makes it possible to use the two tubular sections as a supply line in order to be able to produce them compactly with little technical effort.

In einer Ausgestaltung ist ein Schließelement, insbesondere in der Form eines hohlzylinderförmigen Abschnitts, vorhanden, welches eine gasleitende Verbindung zwischen dem Gashahn und der Öffnung an der Unterseite der Armatur, in die Gas einer angeschlossenen Flüssiggasflasche hineinströmen kann, unterbricht, wenn der Ventilkörper in seine geöffnete Stellung bewegt wird. Hierdurch wird im Fall einer Entleerung durch Abpumpen erreicht, dass Flüssigkeit abgepumpt wird und nicht etwa Gas, was die Entleerung verzögern würde.In one embodiment, a closing element, in particular in the form of a hollow cylindrical section, is present, which interrupts a gas-conducting connection between the gas tap and the opening on the underside of the fitting, into which gas from a connected liquid gas bottle can flow, when the valve body is in its open state position is moved. In the event of emptying by pumping, this ensures that liquid is pumped out and not gas, which would delay the emptying.

Der hohlzylinderförmige Abschnitt ist vorzugsweise ein Abschnitt der Leitung, die den Gashahn mit einer Öffnung an der Unterseite der Armatur verbindet, in die Gas einer angeschlossenen Flüssiggasflasche hineinströmen kann. Dies verringert den technischen Aufwand einer Herstellung und ermöglicht ebenfalls eine kompakte Bauweise.The hollow cylindrical section is preferably a section of the line that connects the gas tap with an opening on the underside of the fitting into which gas from a connected liquid gas bottle can flow. This reduces the technical effort involved in manufacturing and also enables a compact design.

Die Öffnung für ein Wiederbefüllen einer Flüssiggasflasche ist vorzugsweise trichterförmig, um ein Verbinden mit einem Befüllungskopf oder Absaugkopf durch Zentrierung zu erleichtern.The opening for refilling a liquid gas bottle is preferably funnel-shaped to facilitate connection to a filling head or suction head by centering.

Vorteilhaft ist die Armatur so konstruiert, dass entweder Gas über den Gashahn entnommen werden kann oder aber eine Wiederbefüllung oder Entleerung über die dafür vorgesehene Öffnung erfolgen kann. Es kann dann nicht gleichzeitig wiederbefüllt werden und zugleich über den Gashahn Gas entnommen werden. Dies vermeidet Risiken während einer Gasentnahme oder während eines Wiederbefüllens.The fitting is advantageously designed in such a way that either gas can be removed via the gas tap or refilling or emptying can take place via the opening provided for this purpose. It cannot then be refilled at the same time and at the same time gas can be taken out via the gas tap. This avoids risks during gas withdrawal or refilling.

In einer Ausgestaltung der Erfindung gibt es eine weitere Gasentnahmemöglichkeit vorzugsweise über eine Schnellkopplung. An diese weitere Gasentnahmemöglichkeit kann zum Beispiel ein Schlauch angeschlossen werden und zwar zur dauerhaften, grundsätzlich nicht regulierbaren Gasentnahme. Diese zusätzliche Gasentnahmemöglichkeit ist für Ballonfahrer vorgesehen, um eine Flamme dauerhaft mit Gas versorgen zu können. Diese Flamme dient beispielsweise als Zündflamme. Diese Flamme benötigt grundsätzlich nur wenig Gas. Es wird so z. B. verhindert, dass übermäßig viel Gas durch ein zu weit aufgedrehtes Handrad für die Zündflamme verbraucht werden kann. Ist eine Schnellkopplung vorgesehen, so kann die Gasentnahme nur durch Anschließen eines entsprechenden Kupplungsstücks ermöglicht werden. Ein versehentliches Öffnen wird so verhindert.In one embodiment of the invention there is a further gas extraction option, preferably via a quick coupling. For example, a hose can be connected to this additional gas extraction option for permanent, fundamentally unregulated gas extraction. This additional gas extraction option is intended for balloonists to be able to permanently supply a flame with gas. This flame serves, for example, as a pilot flame. This flame basically only requires a small amount of gas. It will be like this: B. prevents excessive gas from being consumed by turning the handwheel for the pilot flame too high. If a quick coupling is provided, gas extraction can only be made possible by connecting a corresponding coupling piece. This prevents accidental opening.

In einer Ausgestaltung gibt es eine Berstsicherung, die bei übermäßig hohem Innendruck zerstört wird, um so Gas kontrolliert austreten zu lassen und so einen zu hohen Innendruck zu reduzieren.In one embodiment, there is a burst protection device that is destroyed if the internal pressure is excessively high in order to allow gas to escape in a controlled manner and thus reduce an internal pressure that is too high.

Nachfolgend wird die Erfindung anhand von Figuren näher erläutert.The invention is explained in more detail below using figures.

Es zeigen:

Figur 1:
Armatur mit geschlossenem Gashahn und geschlossenem Ventil;
Figur 2:
Armatur mit geschlossenem Gashahn und geöffnetem Ventil;
Figur 3:
Armatur mit geschlossenem Gashahn und geöffnetem Ventil;
Figur 4:
Armatur mit geöffnetem Gashahn und geschlossenem Ventil;
Figur 5:
Armatur in einer dreidimensionalen Darstellung.
Show it:
Figure 1:
Fitting with closed gas tap and valve;
Figure 2:
Fitting with closed gas tap and open valve;
Figure 3:
Fitting with closed gas tap and open valve;
Figure 4:
Fitting with gas tap open and valve closed;
Figure 5:
Fitting in a three-dimensional representation.

Die Figur 1 zeigt in einer Schnittdarstellung eine Armatur 1 für eine Gasflasche. Es gibt einen Gashahn 2 mit einem Außengewinde, der seitlich absteht und zwar horizontal von einer stehenden nicht dargestellten Gasflasche, wenn die Armatur 1 bestimmungsgemäß mit einer Gasflasche verbunden ist. Auf den Gashahn 2 kann die Leitung eines Gasverbrauchers, so zum Beispiel eines Gasgrills, zur Entnahme von Gas aufgeschraubt werden.The Figure 1 shows a sectional view of a fitting 1 for a gas bottle. There is a gas tap 2 with an external thread that projects laterally, namely horizontally, from a standing gas bottle (not shown) when the fitting 1 is connected to a gas bottle as intended. The line of a gas consumer, such as a gas grill, can be screwed onto the gas tap 2 to remove gas.

Zusätzlich zu dem seitlich abstehenden Stutzen 2 gibt es an der Oberseite eine trichterförmige Öffnung 3 in die Armatur 1 hinein. Die nach oben führende trichterförmige Öffnung 3 dient als zentrische Befüllungs- und Absaugstelle. Für ein Befüllen oder Absaugen wird die trichterförmige Einmündung bzw. Öffnung 3 mit einem Befüllungskopf oder Absaugkopf einer Gasabfüllstation verbunden.In addition to the laterally projecting nozzle 2, there is a funnel-shaped opening 3 into the fitting 1 at the top. The funnel-shaped opening 3 leading upwards serves as a central filling and suction point. For filling or suction, the funnel-shaped mouth or opening 3 is connected to a filling head or suction head of a gas filling station.

Ein von außen zugänglicher oberer Bereich der Außenwand der zentrischen Befüllungsstelle weist zwei umlaufende Rillen 4 auf, um ein formschlüssiges Umklammern mit komplementär geformten Greifern eines Befüllungskopfes oder Absaugkopfes zu ermöglichen. Es kann so während des Befüllens oder während des Absaugens von Gas eine formschlüssige Verbindung zwischen der Außenwand mit den Rillen 4 und einem Absaugkopf oder Befüllungskopf geschaffen werden, um ein unplanmäßiges Lösen eines Kopfes während des Füllens oder Entleerens einer Gasflasche zu verhindern.An externally accessible upper area of the outer wall of the central filling point has two circumferential grooves 4 to enable a positive grip with complementary shaped grippers of a filling head or suction head. In this way, a positive connection can be created between the outer wall with the grooves 4 and a suction head or filling head during the filling or suctioning of gas in order to prevent an unplanned loosening of a head during the filling or emptying of a gas bottle.

Um eine dichte Verbindung während des Füllens oder Entleerens zu gewährleisten, wird ein Dichtring 5 durch eine entsprechende umlaufende Rille in der trichterförmige Öffnung 3 gehalten. Ein Befüllungskopf bzw. Absaugkopf wird während des Füllens oder Entleerens gegen diesen Dichtring 5 gepresst.In order to ensure a tight connection during filling or emptying, a sealing ring 5 is held in the funnel-shaped opening 3 by a corresponding circumferential groove. A filling head or suction head is pressed against this sealing ring 5 during filling or emptying.

Ein hohlzylinderförmiger Ventilkörper 6 weist in einem unteren Bereich einen Dichtring 7 auf, der in einer entsprechenden umlaufenden Nut des Ventilkörpers 6 gehalten wird. Durch eine Feder 8 wird der Ventilkörper 6 in Richtung der Öffnung 4 vorgespannt. Hierdurch wird der Dichtring 7 gegen einen konusförmigen Übergang 9 für ein Verschließen des Ventils gepresst. Der Zugang über die Öffnung 4 in die Armatur 1 hinein ist dann, wie in der Figur 1 gezeigt, gasdicht und flüssigkeitsdicht verschlossen und zwar zuverlässiger und dauerhafter im Vergleich zu dem aus der Druckschrift DE 43 34 182 A1 bekannten Kugelventil der zentrischen Befüllungsstelle. Im Fall einer Undichtigkeit des Ventils aufgrund von Ermüdungserscheinungen genügt es regelmäßig, lediglich den Dichtring 9 auszutauschen.A hollow cylindrical valve body 6 has a sealing ring 7 in a lower region, which is held in a corresponding circumferential groove of the valve body 6. The valve body 6 is biased towards the opening 4 by a spring 8. As a result, the sealing ring 7 is pressed against a conical transition 9 to close the valve. Access via the opening 4 into the fitting 1 is then as in the Figure 1 shown, sealed gas-tight and liquid-tight and more reliable and durable compared to that from the publication DE 43 34 182 A1 well-known ball valve of the central filling point. If the valve leaks due to fatigue, it is usually sufficient to simply replace the sealing ring 9.

Der Ventilkörper 6 befindet sich im geschlossenen Zustand des Ventils wie in der Figur 1 gezeigt überwiegend in einem rohrförmigen Abschnitt 10, dessen Innendurchmesser dem Außendurchmesser des Ventilkörpers 6 entspricht. Der Ventilkörper 6 wird daher durch diesen rohrförmigen Abschnitt 10 geführt.The valve body 6 is in the closed state of the valve as in the Figure 1 shown predominantly in a tubular section 10, the inside diameter of which corresponds to the outside diameter of the valve body 6. The valve body 6 is therefore guided through this tubular section 10.

Die Feder 8 befindet sich in einem demgegenüber verbreiterten rohrförmigen Abschnitt 10. Der rohrförmige Abschnitt 10 wird durch den konusförmigen Übergang 9 mit einem im Vergleich dazu verbreiterten rohrförmigen Abschnitt 11 verbunden. Der Innendurchmesser des verbreiterten Abschnitts 11 ist geringfügig größer als der Durchmesser der Feder 8. Der verbreiterte Abschnitt 11 dient daher u. a. dem Halt und der Führung der Feder 8, wenn diese für ein Öffnen des Ventils weiter gespannt wird.The spring 8 is located in a tubular section 10 which is widened in comparison. The tubular section 10 is connected by the conical transition 9 to a tubular section 11 which is widened in comparison thereto. The inner diameter of the widened section 11 is slightly larger than the diameter of the spring 8. The widened section 11 therefore serves, among other things, the hold and guidance of the spring 8 when it is further tensioned to open the valve.

Der hohlzylinderförmige Ventilkörper 6 ist am unteren Ende mit einem Stab 12 verschlossen. Der Stab 12 erstreckt sich in einen Zylinder 13 hinein. Der Innendurchmesser des Zylinders 13 ist größer als der Außendurchmesser des Stabs 12, so dass ein Freiraum 14 zwischen dem Zylinder 13 und dem Stab 12 verbleibt.The hollow cylindrical valve body 6 is closed at the lower end with a rod 12. The rod 12 extends into a cylinder 13. The inside diameter of the cylinder 13 is larger than the outside diameter of the rod 12, so that a free space 14 remains between the cylinder 13 and the rod 12.

Das dem Stab 12 gegenüberliegende Ende des hohlzylinderförmigen Ventilkörpers 6 ist offen. Darüber hinaus weist der Ventilkörper 6 in der Nähe des Stabs 12 seitliche Öffnungen 15 auf, die mit seinem Innenraum gasleitend verbunden sind bzw. in seinen Innenraum hineinführen. Wird der Ventilkörper 6 durch einen Flüssigkeitsdruck oder aber mechanisch nach unten gedrückt, bis die seitliche Öffnungen 15 in den verbreiterten Abschnitt 11 hinein gelangen, so ist das Ventil geöffnet. Den geöffneten Zustand des Ventils zeigen die Figuren 2 und 3.The end of the hollow cylindrical valve body 6 opposite the rod 12 is open. In addition, the valve body 6 has lateral openings 15 in the vicinity of the rod 12, which are connected to its interior in a gas-conducting manner or lead into its interior. If the valve body 6 is pressed downwards by fluid pressure or mechanically until the side openings 15 reach the widened section 11, the valve is open. The show the open state of the valve Figures 2 and 3 .

Um den seitlichen Stutzen 2 zu öffnen und zu verschließen, gibt es einen Drehgriff 16, auch Handrad genannt. Durch entsprechendes Drehen des Drehgriffs bzw. Handrads 16 kann der Zylinder 13 zwischen einer Schließstellung und einer Offenstellung hin und zurück bewegt werden. Die Figur 1 zeigt die Schließstellung des Zylinders 13. Ein Dichtring 17 am unteren Ende des Zylinders 13 ist dann gegen eine Schräge 18 für ein Verschließen gepresst. Dieser Verschluss wird aufgehoben, indem der Zylinder durch entsprechendes Drehen des Drehgriffs 16 nach oben bewegt wird. Die Figur 4 zeigt die Offenstellung des Zylinders 13.To open and close the side connector 2, there is a rotary handle 16, also called a handwheel. By appropriately turning the rotary handle or handwheel 16, the cylinder 13 can be moved back and forth between a closed position and an open position. The Figure 1 shows the closed position of the cylinder 13. A sealing ring 17 at the lower end of the cylinder 13 is then pressed against a slope 18 for closure. This closure is canceled by moving the cylinder upwards by turning the rotary handle 16 accordingly. The Figure 4 shows the open position of cylinder 13.

Der Zylinder 13 ist durch Dichtringe 19 gegenüber einem Abschnitt 21 der Gehäusewand der Armatur 1 abgedichtet. Darüber hinaus ist Zylinder 13 durch Dichtringe 20 gegenüber einem zylinderförmigen unteren Abschnitt 22 des Drehgriffs 16 abgedichtet. Die Dichtringe 19 und 20 verhindern einen Gasaustritt aus der Armatur heraus.The cylinder 13 is sealed by sealing rings 19 from a section 21 of the housing wall of the fitting 1. In addition, cylinder 13 is sealed by sealing rings 20 relative to a cylindrical lower section 22 of the rotary handle 16. The sealing rings 19 and 20 prevent gas from escaping from the fitting.

Der Drehgriff 16 ist durch eine Kugellagerung 23 drehbar gehalten. Eine Kappe 24 ist auf dem Gehäuseabschnitt 21 aufgeschraubt, um so den Drehgriff 16 mit dem Gehäuseabschnitt 21 drehbar zu verbinden.The rotary handle 16 is held rotatably by a ball bearing 23. A cap 24 is screwed onto the housing section 21 so as to rotatably connect the rotary handle 16 to the housing section 21.

Die Armatur 1 weist an der Unterseite zwei Öffnungen 25 und 26 auf (siehe insbesondere auch die dreidimensionale Darstellung der Figur 5). Diese Unterseite befindet sich in der Gasflasche bzw. im Flaschenhals, wenn die Armatur mit einer Gasflasche bestimmungsgemäß verbunden ist.The fitting 1 has two openings 25 and 26 on the underside (see in particular the three-dimensional representation of the Figure 5 ). This underside is located in the gas bottle or in the bottle neck when the fitting is properly connected to a gas bottle.

Die Öffnung 25 befindet sich am unteren Ende einer schlauchförmigen bzw. rohrförmigen Leitung 27 am Grund einer entsprechend angeschlossenen Gasflasche. Über diese Öffnung 25 wird die Gasflasche im Anschluss an ein Öffnen des Ventils mit dem Ventilkörper 6 mit Gas befüllt oder Flüssiggas abgesaugt. Über die andere Öffnung 26 erfolgt die Entnahme von Gas aus der Flasche für einen Verbrauch durch einen an den Gashahn 2 angeschlossenen Verbraucher und zwar im Anschluss an ein Öffnen des Gashahns durch entsprechendes Drehen des Drehgriffs 16.The opening 25 is located at the lower end of a tubular or tubular line 27 at the bottom of a correspondingly connected gas bottle. After opening the valve with the valve body 6, the gas bottle is filled with gas or liquid gas is sucked out via this opening 25. Gas is removed from the bottle via the other opening 26 for consumption by a consumer connected to the gas tap 2, namely after opening the gas tap by turning the rotary handle 16 accordingly.

Die Öffnung 26 ist gasleitend mit einer inneren Öffnung 28 verbunden.The opening 26 is connected to an inner opening 28 in a gas-conducting manner.

An das untere Ende des Stabes 12 schließt sich ein damit verbundener hohlzylinderförmiger Abschnitt 29 an, der im Übergangsbereich zwischen Stab 12 und Abschnitt 29 mit einer Öffnung 30 versehen ist. Wird der Ventilkörper 6 nach unten gedrückt, so wird der hohlzylinderförmige Abschnitt 29 gegen einen Dichtring 31 gepresst, der sich am unteren Ende einer Führung 32 befindet.The lower end of the rod 12 is adjoined by a connected hollow cylindrical section 29, which is provided with an opening 30 in the transition area between the rod 12 and section 29. If the valve body 6 is pressed downwards, the hollow cylindrical section 29 is pressed against a sealing ring 31, which is located at the lower end of a guide 32.

Die Figur 1 zeigt den Fall, dass die Armatur 1 geschlossen ist. Ein Absaugen oder Befüllen ist nicht möglich, da das Ventil geschlossen ist. Eine Gasentnahme über den Gashahn 2 ist nicht möglich, da dies durch Pressen des Dichtrings 17 gegen die Schräge 18 verhindert wird, der Gashahn also verschlossen ist.The Figure 1 shows the case that valve 1 is closed. Suctioning or filling is not possible because the valve is closed. Gas extraction via the gas tap 2 is not possible because this is prevented by pressing the sealing ring 17 against the slope 18, so the gas tap is closed.

Die Figur 2 verdeutlicht das Befüllen über die Armatur 1. Der seitliche Stutzen 2 ist verschlossen und die trichterförmige Öffnung 4 mit einem nicht dargestellten Befüllungskopf verbunden, der gegen den Dichtring 5 in der trichterförmigen Öffnung 3 flüssigkeitsdicht gepresst ist. Hierdurch wird die in der Figur 1 gezeigte Öffnung 28 verschlossen. Eine gasleitende Verbindung zwischen Gashahn und der an der Unterseite befindlichen Öffnung 26 ist so unterbrochen. Es wird nun Flüssiggas gemäß des Pfeils 33 in die trichterförmige Öffnung 3 hineingepumpt. Hierdurch wird der Ventilkörper 6 nach unten gedrückt, bis der hohlzylinderförmige Abschnitt 29 gegen den Dichtring 31 gepresst ist. Die seitlichen Öffnungen 15 des Ventilkörpers 6 befinden sich nun im verbreiterten rohrförmigen Abschnitt 11. Das entlang des Pfeils 33 hineingepumpte Flüssiggas kann nun aus den Öffnungen 15 des Ventilkörpers 6 austreten und zwar in den verbreiterten rohrförmigen Abschnitt 11 hinein. Innerhalb des verbreiterten rohrförmigen Abschnitts 11 kann das Flüssiggas um den unteren Abschnitt des Ventilkörpers 6 herum strömen, wie die Pfeile 34 verdeutlichen. Von dem verbreiterten rohrförmigen Abschnitt 11 strömt das Flüssiggas in den Zwischenraum 14 zwischen Stab 12 und Gehäuseabschnitt 21 hinein und gelangt so wie durch die Pfeile 35 und 36 dargestellt in die rohrförmige oder schlauchförmige Leitung 27 hinein. Am unteren Ende der rohrförmigen oder schlauchförmigen Leitung 27 tritt das Flüssiggas dann gemäß Pfeil 37 aus der Armatur 1 aus und gelangt so zum Grund einer nicht gezeigten Gasflasche, an der die Armatur 1 befestigt ist.The Figure 2 illustrates the filling via the fitting 1. The side connection 2 is closed and the funnel-shaped opening 4 is connected to a filling head, not shown, which is pressed liquid-tight against the sealing ring 5 in the funnel-shaped opening 3. This makes the in the Figure 1 Opening 28 shown closed. A gas-conducting connection between the gas tap and the opening 26 on the underside is interrupted. It is now liquid gas according to of the arrow 33 is pumped into the funnel-shaped opening 3. As a result, the valve body 6 is pressed downward until the hollow cylindrical section 29 is pressed against the sealing ring 31. The side openings 15 of the valve body 6 are now located in the widened tubular section 11. The liquid gas pumped in along the arrow 33 can now exit from the openings 15 of the valve body 6 into the widened tubular section 11. Within the widened tubular section 11, the liquid gas can flow around the lower section of the valve body 6, as the arrows 34 illustrate. From the widened tubular section 11, the liquid gas flows into the space 14 between the rod 12 and the housing section 21 and thus reaches the tubular or tubular line 27 as shown by the arrows 35 and 36. At the lower end of the tubular or hose-shaped line 27, the liquid gas then emerges from the fitting 1 according to arrow 37 and thus reaches the bottom of a gas bottle, not shown, to which the fitting 1 is attached.

Die Figur 2 verdeutlicht, dass der hohlzylinderförmige Abschnitt 29 in einem oberen Bereich einen geringeren Außendurchmesser 38 aufweist, um so im Fall der Figur 2 einen solchen Abstand zu der angrenzenden Gehäuseinnenwand derart zu schaffen, dass ein Gasfluss gemäß dem Pfeil 36 möglich ist.The Figure 2 clarifies that the hollow cylindrical section 29 has a smaller outer diameter 38 in an upper region, in the case of Figure 2 to create such a distance from the adjacent inner housing wall in such a way that a gas flow according to arrow 36 is possible.

Für ein Absaugen oder Entleeren wird der Ventilkörper 6 mechanisch durch einen Dorn oder Stutzen eines auf den Trichter 3 aufgesetzten Absaugkopfes nach unten gedrückt. Im Anschluss daran kann Flüssiggas abgesaugt werden und zwar gemäß den Pfeilen 39 bis 43, wie in der Figur 3 gezeigt. Da aufgrund des Schlauches bzw. Rohrs 27 vom Grund abgesaugt wird, wird so sichergestellt, dass verflüssigtes Gas entnommen wird und keine gasförmige Atmosphäre oberhalb des Flüssigkeitsspiegels in der Gasflasche. Eine Flüssiggasflasche kann daher besonders schnell und mit geringem Aufwand leergepumpt werden.For suction or emptying, the valve body 6 is pressed down mechanically by a mandrel or nozzle of a suction head placed on the funnel 3. Liquid gas can then be sucked off according to arrows 39 to 43, as in the Figure 3 shown. Since suction is carried out from the ground due to the hose or pipe 27, this ensures that liquefied gas is removed and no gaseous atmosphere above the liquid level in the gas bottle. A liquid gas bottle can therefore be pumped out particularly quickly and with little effort.

Die Figur 4 zeigt die Armatur 1 im geöffneten Zustand des Gashahns 2 und im geschlossenen Zustand des Ventils. Der Gashahn 2 ist geöffnet, weil sich der Ventilkörper 6 in seiner geschlossenen Stellung befindet und der Zylinder 13 durch Drehen des Referats 16 nach oben bewegt und daher der Dichtring 17 von der Schräge 18 entfernt worden ist. Das Gas, welches sich oberhalb des Flüssigkeitsspiegels in der Flüssiggasflasche befindet, kann nun gemäß dem Pfeil 44 in die Öffnung 26 eintreten und zur innen liegenden Öffnung 28 strömen. Von der Öffnung 28 gelangt das Gas gemäß dem Pfeil 45 in den Innenraum des hohlzylinderförmigen Abschnitts 29. Das Gas tritt dann über die Öffnung 30 am oberen Ende des hohlzylinderförmigen Abschnitts 29 aus und gelangt gemäß der Pfeildarstellung 46 in den Zwischenraum 14 hinein. Da nun ein Abstand zwischen dem Dichtring 17 und der Schräge 18 vorhanden ist, kann das Gas gemäß der Pfeildarstellung 47 weiter in den Stutzen des Gashahns 2 hineinströmen und von hier aus gemäß dem Pfeil 48 zum Verbraucher weitergeleitet werden.The Figure 4 shows the fitting 1 in the open state of the gas tap 2 and in the closed state of the valve. The gas tap 2 is open because the valve body 6 is in its closed position and the cylinder 13 is moved upwards by turning the unit 16 and therefore the sealing ring 17 has been removed from the slope 18. The gas, which is above the liquid level in the liquid gas bottle, can now enter the opening 26 according to the arrow 44 and flow to the internal opening 28. The gas comes from the opening 28 according to the arrow 45 into the interior of the hollow cylindrical section 29. The gas then exits via the opening 30 at the upper end of the hollow cylindrical section 29 and enters the intermediate space 14 according to the arrow representation 46. Since there is now a distance between the sealing ring 17 and the bevel 18, the gas can flow further into the connection of the gas tap 2 according to the arrow representation 47 and from here can be passed on to the consumer according to the arrow 48.

Durch eine solche Armatur wird in einer entsprechenden Ausgestaltung insbesondere vorteilhaft erreicht, dass entweder Gas über den Gashahn entnommen werden kann oder aber eine Wiederbefüllung oder Entleerung über die zentrische Öffnung 3 erfolgen kann. Es kann dann nicht gleichzeitig wieder befüllt werden und über den Gashahn Gas entnommen werden.With such a fitting, in a corresponding embodiment, it is particularly advantageously achieved that either gas can be removed via the gas tap or refilling or emptying can take place via the central opening 3. It cannot then be refilled and gas removed via the gas tap at the same time.

Das Verfahren für ein Wiederbefüllen sieht auch ein Entleeren vor für den Fall, dass eine Gasundichtigkeit festgestellt wird. Gerade das Entleeren kann besonders schnell erfolgen, da Flüssigkeit abgepumpt wird und nicht Gas.The refill procedure also includes emptying in the event a gas leak is detected. Emptying in particular can be done particularly quickly because liquid is pumped out and not gas.

Claims (13)

  1. Method for a refilling of a liquid gas bottle with a fitting in a filling station, wherein the fitting is provided with a gas tap (2) for a gas withdrawal and an opening (3) for a refilling of a liquid gas bottle, wherein the opening (3) for a refilling of the liquid gas bottle can be connected to a hose-shaped or tube-shaped line (27) of the fitting, which can extend at least 300 mm, preferably at least 400 mm into the liquid gas bottle, comprising the steps of
    • a filling head of the filling station is connected to the opening (3) for a refilling,
    • thereafter the filling station fills the gas bottle with liquid gas,
    • following the filling, the filling station checks for gas escaping from the gas bottle,
    • if the check shows that no gas escapes from the gas bottle, the refilled gas bottle is removed from the filling station,
    • if the check shows that gas is escaping from the bottle, the filling station empties the gas bottle by pumping out through the opening which is provided for refilling.
  2. Method according to claim 1, characterized in that the opening (3) for a refilling is located on the upper side of the fitting.
  3. Method according to one of the preceding claims, characterized in that the gas tap (2) protrudes laterally from the fitting (1).
  4. Method according to the preceding claim, characterized in that the gas tap (2) can be opened and closed by a handwheel (16).
  5. Method according to the preceding claim, characterized in that the fitting is provided with a feed for a refilling and the handwheel (16) is arranged around said feed for a refilling.
  6. Method according to one of the preceding claims, characterized in that the opening (3) for a refilling of the liquid gas bottle can be opened and closed by a valve.
  7. Fitting for a liquid gas bottle with a gas tap (2) for a gas withdrawal and an opening (3) for a refilling of a liquid gas bottle, wherein the opening (3) for a refilling of a liquid gas bottle can be connected in a gas-conducting manner to a hose-shaped or tube-shaped line (27) of the fitting, which can extend at least 300 mm, preferably at least 400 mm, into a liquid gas bottle, wherein the opening (3) for a refilling of a liquid gas bottle can be opened and closed by a valve, characterized in that the gas tap can be opened and closed by a rotary handle (16) and in that the valve comprises a valve body (6) which is pressed into its closed valve position by a prestressed spring (8) in such a way that the valve can be opened by a spigot or a mandrel of a suction head.
  8. Fitting according to the preceding claim, characterized by an opening (26) on the underside of the fitting adjacent to the hose-shaped or tube-shaped line which can be connected to the gas tap (2) in a gas-conducting manner, wherein the hose-shaped or tube-shaped line (27) projects with respect to the opening, preferably by at least 200 mm, more preferably by at least 300 mm.
  9. Fitting according to the preceding claim, characterized in that the opening (3) for a refilling of the liquid gas bottle is arranged on the upper side of the fitting (1).
  10. Fitting according to either of the two preceding claims, characterized in that the gas tap (2) protrudes laterally from the fitting (1).
  11. Fitting according to either of the preceding claims 7 to 10, characterized in that the rotary handle is a handwheel (16).
  12. Fitting according to the preceding claim, characterized in that the handwheel (16) is arranged around a feed for a refilling.
  13. Fitting according to one of the preceding claims, characterised in that the valve body (6) is provided with a circumferential, replaceable sealing ring (9) which closes the valve in a liquid-tight and gas-tight manner in the closed state.
EP19210220.0A 2014-11-12 2015-10-28 Fitting for liquefied gas bottles and filling method Active EP3660381B9 (en)

Applications Claiming Priority (3)

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EP14192891.1A EP3021034B1 (en) 2014-11-12 2014-11-12 Fitting for liquefied gas bottles and filling method
PCT/EP2015/074950 WO2016074923A1 (en) 2014-11-12 2015-10-28 Fitting for liquid gas cylinders and filling method
EP15797869.3A EP3218642B1 (en) 2014-11-12 2015-10-28 Fitting for liquefied gas bottles and filling method

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EP15797869.3A Division EP3218642B1 (en) 2014-11-12 2015-10-28 Fitting for liquefied gas bottles and filling method
PCT/EP2015/074950 Previously-Filed-Application WO2016074923A1 (en) 2014-11-12 2015-10-28 Fitting for liquid gas cylinders and filling method

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EP3660381A1 EP3660381A1 (en) 2020-06-03
EP3660381B1 EP3660381B1 (en) 2023-08-30
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MA40947B1 (en) 2021-04-30
RS59947B1 (en) 2020-03-31
MX2017006187A (en) 2018-01-23
MA52406A (en) 2021-01-06
MA40947A (en) 2017-09-20
EP3218642A1 (en) 2017-09-20
HK1224357A1 (en) 2017-08-18
CN107002946A (en) 2017-08-01
HUE047970T2 (en) 2020-05-28
AU2015345387A1 (en) 2017-04-27
WO2016074923A1 (en) 2016-05-19
EA033994B1 (en) 2019-12-17
ZA201702728B (en) 2021-05-26
CN107002946B (en) 2020-04-21
US10738945B2 (en) 2020-08-11
US20170350559A1 (en) 2017-12-07
HRP20200242T1 (en) 2020-05-15
EP3660381A1 (en) 2020-06-03
EP3021034A1 (en) 2016-05-18
JP2018503032A (en) 2018-02-01
EP3660381B1 (en) 2023-08-30
AU2015345387B2 (en) 2019-11-07
EA201790955A1 (en) 2017-11-30
CA2964439A1 (en) 2016-05-19
ME03634B (en) 2020-07-20
EP3218642B1 (en) 2019-11-27
CA2964439C (en) 2023-03-28
EP3021034B1 (en) 2019-04-24
KR20170092149A (en) 2017-08-10
PT3218642T (en) 2020-02-25
JP6612341B2 (en) 2019-11-27
TN2017000132A1 (en) 2018-10-19
EP3660381C0 (en) 2023-08-30
PL3218642T3 (en) 2020-08-24
KR102440912B1 (en) 2022-09-06
ES2773443T3 (en) 2020-07-13
SI3218642T1 (en) 2020-07-31
DK3218642T3 (en) 2020-03-02

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