EP0050947A2 - Hochdruckgasflaschen - Google Patents

Hochdruckgasflaschen Download PDF

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Publication number
EP0050947A2
EP0050947A2 EP81304840A EP81304840A EP0050947A2 EP 0050947 A2 EP0050947 A2 EP 0050947A2 EP 81304840 A EP81304840 A EP 81304840A EP 81304840 A EP81304840 A EP 81304840A EP 0050947 A2 EP0050947 A2 EP 0050947A2
Authority
EP
European Patent Office
Prior art keywords
neck
gas cylinder
aperture
further characterised
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP81304840A
Other languages
English (en)
French (fr)
Other versions
EP0050947A3 (de
Inventor
John Fletcher Hawkins
Edward Lewis Jeans
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.)
Rio Tinto Alcan Inc
SIMEC Lochaber Hydropower 2 Ltd
Mondelez UK Holdings and Services Ltd
Original Assignee
Alcan Aluminum Ltd
Cadbury Schweppes Ltd
SIMEC Lochaber Hydropower 2 Ltd
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 Alcan Aluminum Ltd, Cadbury Schweppes Ltd, SIMEC Lochaber Hydropower 2 Ltd filed Critical Alcan Aluminum Ltd
Publication of EP0050947A2 publication Critical patent/EP0050947A2/de
Publication of EP0050947A3 publication Critical patent/EP0050947A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
    • 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
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • 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
    • F17C2203/0646—Aluminium
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2181—Metal working processes, e.g. deep drawing, stamping or cutting
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion

Definitions

  • the present invention relates to gas cylinders for storage of gas under high pressure.
  • Gas cylinders with which the present invention is concerned are one-piece cylinders without welded seams and have a generally cylindrical body or barrel having a closed bottom end and surmounted by an upstanding neck, but possibly somewhat .tapering neck, the neck being of smaller external dimensions than the body and greater wall thickness.
  • the outside dimensions of the neck are less than 50% of the diameter of the cylindrical body.
  • the overall height of the cylinder is 2-3 times the external diameter of the cylinder body although it may be in the range of 1.5 - 5 (or even more) times the diameter of the body.
  • the invention is particularly applicable to improvements in gas cylinders produced by impact- extrusion from an aluminium alloy blank, although it is possible to envisage its use in. single-piece, high pressure'gas containers produced by other methods and from other materials, particularly steel.
  • Gas cylinders for containment of gases under high pressure are formed in a single piece without welded seams, and are thus different in kind from containers employed for readily-liquefiable gases such as butane.
  • Cold-impact extrusion of aluminium is a very satisfactory method for forming the bodies of one-piece high-pressure gas cylinders. It allows the cylindrical wall to be both seamless and of a thickness commensurate both with the diameter of the cylinder and the designed service pressure of the cylinder. At the same time it permits the cylinder to be formed with a relatively flat bottom end thicker than the cylindrical side wall to provide the necessary strength.
  • the cold-impact extrusion method has been ; employed for the production of conventional g p s cylinders with a volume of as little as 0.5 litre, but in many instances the volume of known cylinders is 50 litres or higher.
  • means are mounted on the cylinder to provide for turning on and off the flow of gas from the cylinder, either by a wheel valve or by means of a check valve, coacting with a means for displacing it from its seat.
  • a high-pressure gas cylinder is provided with an over-pressure relief mechanism which allows the gas to blow off from the cylinder when the internal pressure rises above a predetermined value.
  • Such a device is to avoid the risk of explosion, when for example the cylinder is exposed to excessive heat and/or has been overfilled.
  • Such a device requires that it be exposed at all times to the full gas pressure in the cylinder and thus must always be connected to a by-pass arranged upstream of the on-off valve for the cylinder.
  • valve fitment Many forms of valve fitment have been developed for known high pressure gas cylinders. These are secured in the mouth aperture of the cylinder and project upwardly from the cylinder mouth. All these fitments include at least a shut-off valve (which may take the form of a simple unseatable check valve (non- return valve) and an over-pressure relief mechanism. Whatever is the design of an upwardly projecting fitment, it is preferable to provide a protector for it, at least during transport. It is well known to provide'a permanently attached protector, which also acts as a carrying handle.
  • the employment of an upwardly projecting fitment for drawing off a supply of gas ' from the cylinder has certain other disadvantages and acts as a constraint on the employment of desirable internal fitments for the cylinder.
  • the present invention contemplates a high-pressure gas cylinder having a mouth and at least one auxiliary aperture in the thickened neck.
  • auxiliary aperture or apertures will usually have an axis approximately perpendicular to the axis of the cylinder, but in some circumstances it may be at an angle no greater than about 70° to the axis of the cylinder.
  • the diameter of an auxiliary aperture preferably does not exceed 0.5 diameter of the neck (as measured at 90° to the axis of the aperture) although in some circumstances it maybe somewhat greater, particularly where the neck wall thickness is high in relation to the wall thickness of the cylinder body.
  • the auxiliary aperture or apertures is/are internally screw-threaded to receive a fitment therein.
  • the screw thread is formed directly in the metal of the thickened neck.
  • the thread may be formed in a separate bush, secured in a plain aperture by welding, although the use of welding, even when localised, is considered undesirable in the construction of high-pressure gas cylinders.
  • a simple unseatable check-valve is secured as a fitment in an auxiliary aperture in the cylinder neck and the axis of the aperture is essentially perpendicular to the cylinder axis.
  • the check-valve is housed in an externally- threaded fitment, which has a sealing surface on an external shoulder for sealing against a matching surface machined on the outside of the cylinder neck.
  • the check-valve and its housing are screwed into the cylinder neck as a single assembly.
  • This arrangement has the advantage of ease of connection of the cylinder without tools for supply of gas to related equipment. This can be achieved by means of a tubular probe, carried on a yoke, adapted to embrace the neck of the bottle to draw the probe into sealed relationship with the exit aperture of the check valve and to displace the valve member from its seating.
  • An overpressure relief mechanism may be threaded into the mouth of the cylinder or into an additional auxiliary aperture in the cylinder neck.
  • the relief mechanism may be constructed so that its outer end projects very little, if at all, from the outer surface of the cylinder and thus does not require external protection.
  • the relief mechanism is fitted in an additional auxiliary aperture, it is preferred that such aperture is arranged in a position diametrically opposed to the auxiliary aperture in which a check valve is fitted.
  • the fitting of the relief mechanism in an auxiliary aperture in the cylinder neck allows other types of desirable fitments, such as a probe or dip tube to be inserted into the mouth of the cylinder. Such a position is very desirable for any fitment which will operate most efficiently when located in alignment with the axis of the cylinder.
  • a cylinder made in accordance with the invention requires a different external shape and a somewhat revised production technique, as compared with a conventionally produced cylinder.which employs an on-off valve fitment secured in the mouth of the cylinder and . projecting upwardly therefrom.
  • the neck is made as short as possible to hold down the weight of metal in relation to the rated capacity of the cylinder.
  • the length of the neck of a conventional cylinder need not be longer than is required to secure an on-off valve fitment to it.
  • the neck it is necessary for the neck to extend upwardly from the shoulders of the cylinder for an extent sufficient to permit one or more auxiliary apertures to be formed in it while leaving sufficient length of neck above such aperture(s) to permit some other device to be fitted into the neck and secured by internal or external thread on the neck without prejudicing the effective operation off the device(s) in the additional aperture(s).
  • the overall length of the neck of a gas cylinder of the present invention may be less than the length occupied by the neck and a conventional valve fitment having a laterally directed gas outlet. This provides an opportunity for fitting a cylinder of greater capacity within a given space.
  • the manufacture of high-pressure gas cylinders by impact extrusion of aluminium is well suited to take advantage of the novel gas cylinder/valve combination provided by the invention.
  • the initial body, formed by impact extrusion has a mouth of an internal diameter equal to the diameter of the internal wall of the main body of the completed cylinder, since it is necessary to withdraw the extrusion ram through the mouth.
  • the cylindrical wall surrounding the mouth is then reduced in diameter to provide a neck and mouth of desired final dimensions. This reduction may be achieved by pressing the mouth end of the initial extruded body, after heating to an appropriate temperature, into a female die to form the shoulders and neck of the body to the desired profile.
  • the forming operation results in a thicknening of the wall at the shoulders and neck and results in an overall decrease in height of the initial extrusion by an amount up to about half the outside diameter of the cylindrical wall of the initial body.
  • the neck may be formed by a metal-spinning operation.
  • a gas cylinder of the present invention requires a longer neck than is required for a conventional gas cylinder.
  • the overall. reduction of the length of the initial extrusion is usually about 0.25 - 0.4 of the external diameter of the body and this is accompanied by a somewhat greater thickening over the shoulders and on the outside of the neck because of the greater extent of the initial body to which post-forming is applied.
  • the overall length of the neck (as judged from the outside of the bottle) will in nearly all instances be at least 3 cms and will be somewhat greater than the external diameter of the neck as measured immediately surrounding the bottle mouth.
  • the female die has a slight internal taper, to permit easy withdrawal at the end of the 'operation.
  • a taper of as little as 1 has been found adequate for this purpose in most instances, but in some instances it is found desirable to provide larger tapers, even as high as 10 .
  • the outer surface of the neck it will be preferred to machine the outer surface of the neck to reduce it to a true cylindrical external shape. This option may be employed where it is desired to clamp a fitment onto the neck. Where the neck is machined or otherwise formed it may be convenient to provide a lip at the upper end of the neck. Such lip can improve the manual grippability of the neck.
  • the bottom end of the neck may be considered to be at the point where the angle between the outer surface of the bottle neck and the axis of the cylinder increases above 15°.
  • a fitment to be threaded.into an auxiliary aperture in the bottle neck includes a head which seats against the external surface of.the- cylinder.
  • a flat surface on the exterior of the cylinder neck.
  • Such flat surface can be achieved by machining the neck.
  • the flat surface On a cross section of the neck the flat surface preferably makes an angle in the range of 50 - 75° with the axis of the neck.
  • the wall thickness is preferably at least as thick as and preferably somewhat exceeds the wall thickness at a position at 90° to the middle of the flat surface.
  • such flat surfaces and thickened neck portions may be provided at diametrically opposite positions. This has the two-fold advantage of allowing two auxiliary apertures to be formed in the neck, if desired, and making the neck symmetrical so as to render the neck forming operation easier to perform.
  • one or more locally thickened portions of the neck is useful also where the head of the fitments is partially received into the neck and a sealing surface for the head of the fitment is machined in the course of drilling the aperture passage through the wall of the neck. This applies both in the case where the outer surface of the neck is as formed or has been subsequently machined.
  • the cylinder 1 illustrated in Figures 1 and 2 has a conventional base 2 and cylindrical side walls 3.
  • the shoulders 4 merge into a machined truly cylindrical elongated neck 5 having an overall length of about 4 cms and has a mouth 6, which is internally screw-threaded to receive an over-pressure relief device 11 ( Figure 2).
  • the device 11 comprises a housing 12, having an internally screw-threaded bore, holding a perforated plug 14 to support a burst disc 15, which will rupture when the gas pressure in the cylinder exceeds a predetermined value. The gas then blows off to atmosphere through vent passages 16.
  • the elongated neck 5 has an auxiliary aperture 20 formed therein.
  • the diameter of this aperture is about 1.5 cms and it is screw-threaded to receive a check valve 21 comprising a valve seat member 22, having a sealing rib 23 at its inner end for engagement by a sealing washer 24, carried by a plunger 25.
  • the plunger 25 is held against its seating by a light spring 26 when the cylinder is empty but it is the gas pressure which holds it in position when the cylinder is full.
  • the plunger has flutes or wings 27, which guide it in the internal bore 28 of the member 22.
  • the gas cylinder is intended for use with a device, in which a pressure reduction valve is clamped to the cylinder neck, the clamp engaging in a depression 30 - diametrically opposite to the check valve.
  • the device carries a probe member, concentric with a take-off tube.
  • Tightening the clamp results in the unseating of the valve by the probe and the sealing of the take-off tube to the bore 28.
  • FIG. 3 shows an alternative form of cylinder.
  • like parts are indicated by the same reference numerals as in Figure 2.
  • auxiliary aperture 20 there is a check valve 32 of reduced overall length.' It comprises a body 33, threaded into the auxiliary aperture 20 and a plunger member 34.
  • the plunger member 34 is guided in an annular bore 35 in body 33 and is held against a seal 36 by a light spring 37, which seats against a shoulder 37' at the inner end of the auxiliary aperture 20.
  • a light spring 37 which seats against a shoulder 37' at the inner end of the auxiliary aperture 20.
  • An over pressure relief device 41 constructed similarly to the device 11 in Figure 1, is secured in the second auxiliary aperture 20.
  • the relief device is preferably formed with a depression 42, similar to 30.
  • Both the pressure check valve 32 and the over pressure relief device are made axially short so as to leave clear the axial passage in the neck 5.
  • the wall of the cylindrical neck has a thickness of the order of 1 cm and thus the two devices are miniaturised to fall within the required length.
  • the wall thickness of the neck may be as little as 0.5 cm, but in general the wall thickness of the neck of an aluminium alloy cylinder requires to be at least 1 cm and indeed the miniaturisation of the fitments to fit into an aperture, of less than 1 cm in the axial direction, presents considerable practical difficulty.
  • the axial passage in the neck is entirely unobstructed and is thus available for a probe or dip tube 43, extending into the lower part of the cylinder and permanently secured in the mouth 6 of the cylinder.
  • the check valve may be arranged at an exact distance from the lower end of the cylinder. It is difficult to achieve equal precision where the check valve is located in the side of an upwardly extending fitment threaded into the mouth of the cylinder.
  • check valve and pressure relief device in the cylinder neck avoids the provision of a separate fitment possibly requiring a brass or plated body and thus achieves a substantial cost saving in addition to the advantages afforded by greater compactness.
  • an over pressure relief device 11 constructed as shown in Figure 2 is fitted , into the mouth of the cylinder and an auxiliary fitment 49, which may take the same form as the check valve 32, is fitted into an auxiliary aperture 50 in the neck.
  • the axis of the auxiliary aperture 50 is perpendicular to the plane of a flat surface 51 on the neck of the bottle which is locally thickened at this locality.
  • the surface 51 merges into a neck of generally circular profile.
  • the surface 51 makes an angle of about 65° with the axis of the cylinder, but may make a larger or smaller angle as already explained.
  • the surface 51 is preferably inclined at a small angle of about 1° to the axis of the cylinder, although the angle of inclination may be up to 10 0 as already explained.
  • the generally D-shaped section of Figure 4 allows the neck to be formed with maximum economy of metal. However it is frequently preferable for ease of production to adopt the neck shape of Figure 5 in which two diametrically opposite flat faces 51 are provided on the neck. In both. Figure 4 and 5 the distance d of the mid-point of surface 51 from the axis of the cylinder slightly exceeds the distance d', so that axial length of the thread in aperture 50 is sufficient on the one hand and the wall thickness in a direction at right angles to surface 51 is no more than sufficient on the other hand . It will be understood that a second screw-threaded aperture may be provided diametrically opposite the aperture 50 shown in Figure
EP81304840A 1980-10-23 1981-10-16 Hochdruckgasflaschen Withdrawn EP0050947A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20002280A 1980-10-23 1980-10-23
US200022 1980-10-23

Publications (2)

Publication Number Publication Date
EP0050947A2 true EP0050947A2 (de) 1982-05-05
EP0050947A3 EP0050947A3 (de) 1982-09-01

Family

ID=22739992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81304840A Withdrawn EP0050947A3 (de) 1980-10-23 1981-10-16 Hochdruckgasflaschen

Country Status (7)

Country Link
EP (1) EP0050947A3 (de)
JP (1) JPS57101195A (de)
AU (1) AU7671981A (de)
BR (1) BR8106814A (de)
DK (1) DK465281A (de)
ES (1) ES273305Y (de)
ZA (1) ZA817195B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050898B1 (de) * 1980-10-23 1986-03-19 Cadbury Schweppes Limited Druckregel- und Absperrventil
DE102008049990A1 (de) * 2008-10-01 2010-04-29 Jahn Gmbh Umform- Und Zerspanungstechnik Speichervorrichtung und Verfahren zur Herstellung einer Speichervorrichtung
EP1701085A3 (de) * 2005-03-07 2011-04-20 Rothenberger AG Druckgasquelle mit Brenngasfüllung für manuelle Handhabung
EP1701086A3 (de) * 2005-03-07 2011-04-20 Rothenberger AG Druckgasquelle mit Brenngasfüllung für manuelle Handhabung
DE102019217896A1 (de) * 2019-11-20 2021-05-20 Andreas Jahn Druckbehälter und Verfahren zur Herstellung eines Druckbehälters
EP4174358A1 (de) * 2021-11-02 2023-05-03 Andreas Jahn Druckbehälter mit mehreren seitlichen ausströmöffnungen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555447C (de) * 1928-07-15 1932-07-22 Draegerwerk Ag Sauerstoffflasche, insbesondere fuer Atmungsgeraete
FR884987A (fr) * 1940-09-20 1943-09-01 Sagem Bouteille à gaz comprimé
DE842799C (de) * 1950-11-26 1952-06-30 Heizbau G M B H Gebr Reusch Kleinflasche fuer verfluessigte Gase
US3024936A (en) * 1958-05-09 1962-03-13 Thompson Ramo Wooldridge Inc Pressure vessels and method of making same
US4033378A (en) * 1973-12-10 1977-07-05 Pauliukonis Richard S Compressed gas valve with constant flow

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE555447C (de) * 1928-07-15 1932-07-22 Draegerwerk Ag Sauerstoffflasche, insbesondere fuer Atmungsgeraete
FR884987A (fr) * 1940-09-20 1943-09-01 Sagem Bouteille à gaz comprimé
DE842799C (de) * 1950-11-26 1952-06-30 Heizbau G M B H Gebr Reusch Kleinflasche fuer verfluessigte Gase
US3024936A (en) * 1958-05-09 1962-03-13 Thompson Ramo Wooldridge Inc Pressure vessels and method of making same
US4033378A (en) * 1973-12-10 1977-07-05 Pauliukonis Richard S Compressed gas valve with constant flow

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050898B1 (de) * 1980-10-23 1986-03-19 Cadbury Schweppes Limited Druckregel- und Absperrventil
EP1701085A3 (de) * 2005-03-07 2011-04-20 Rothenberger AG Druckgasquelle mit Brenngasfüllung für manuelle Handhabung
EP1701086A3 (de) * 2005-03-07 2011-04-20 Rothenberger AG Druckgasquelle mit Brenngasfüllung für manuelle Handhabung
DE102008049990A1 (de) * 2008-10-01 2010-04-29 Jahn Gmbh Umform- Und Zerspanungstechnik Speichervorrichtung und Verfahren zur Herstellung einer Speichervorrichtung
DE102008049990B4 (de) * 2008-10-01 2010-07-29 Jahn Gmbh Umform- Und Zerspanungstechnik Speichervorrichtung und Verfahren zur Herstellung einer Speichervorrichtung
DE102019217896A1 (de) * 2019-11-20 2021-05-20 Andreas Jahn Druckbehälter und Verfahren zur Herstellung eines Druckbehälters
WO2021099542A1 (de) * 2019-11-20 2021-05-27 Andreas Jahn Druckbehälter und verfahren zur herstellung eines druckbehälters
DE102019217896B4 (de) 2019-11-20 2021-07-22 Andreas Jahn Druckbehälter und Verfahren zur Herstellung eines Druckbehälters
EP4174358A1 (de) * 2021-11-02 2023-05-03 Andreas Jahn Druckbehälter mit mehreren seitlichen ausströmöffnungen

Also Published As

Publication number Publication date
ZA817195B (en) 1983-03-30
AU7671981A (en) 1982-04-29
DK465281A (da) 1982-04-24
ES273305U (es) 1984-06-16
ES273305Y (es) 1985-01-01
BR8106814A (pt) 1982-07-06
EP0050947A3 (de) 1982-09-01
JPS57101195A (en) 1982-06-23

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