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WO2001065169A1 - Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication - Google Patents

Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication Download PDF

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Publication number
WO2001065169A1
WO2001065169A1 PCT/US2000/005415 US0005415W WO0165169A1 WO 2001065169 A1 WO2001065169 A1 WO 2001065169A1 US 0005415 W US0005415 W US 0005415W WO 0165169 A1 WO0165169 A1 WO 0165169A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve body
cylinder
stem
valve
hollow
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.)
Ceased
Application number
PCT/US2000/005415
Other languages
English (en)
Inventor
Joseph K. Bernacki
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.)
Scott Specialty Gases Inc
Original Assignee
Scott Specialty Gases Inc
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 Scott Specialty Gases Inc filed Critical Scott Specialty Gases Inc
Priority to AU2000235095A priority Critical patent/AU2000235095A1/en
Priority to PCT/US2000/005415 priority patent/WO2001065169A1/fr
Publication of WO2001065169A1 publication Critical patent/WO2001065169A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat 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
    • 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
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • 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
    • F17C2203/0643—Stainless 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
    • 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
    • F17C2203/0648—Alloys or compositions of metals
    • 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
    • F17C2203/0658—Synthetics
    • F17C2203/066—Plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0364—Pipes flexible or articulated, e.g. a hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • 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
    • 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
    • F17C2209/2172—Polishing
    • 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
    • F17C2209/22—Assembling processes
    • 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
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • 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
    • F17C2221/037—Containing pollutant, e.g. H2S, Cl
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/012—Reducing weight
    • 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
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/018—Adapting dimensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks

Definitions

  • the present invention is directed to cylinders for holding reactive and non-reactive gases and, more specifically, to a cylinder having an integral valve body
  • Instability is defined as a tendency of the gas mixture to change concentration (either rise or fall, but usually fall) over time
  • Long-term instability occurs when a mixture concentration drops after several, e g , four to six (4-6), months
  • Short-term instability is observed when the mixture concentration drops in less than three (3) months
  • Instability is especially pronounced for mixtures containing reactive components, such as NO, NO 2 , H 2 S, SO 2 , ethylene oxide, CO 2 , HC1, HCN, and NH 3 , to name a few, at relatively low concentrations
  • Instability is most readily observed in small or low-pressure mixes, such as those contained in transportable cylinders, because of the small amount of reactive gas relative to contaminant diffusion in the cylinder over time
  • the present invention is directed to a method of forming a cylinder having an integral valve body for containing gases.
  • the method includes selecting a body comprised of a material suitable for use in containing the at least one gas and having a first and a second end; forming a valve body from a portion of the body proximate to the second end; accessing an interior portion of the body by removing material from the first end of the body to form a cavity and to form at least a portion of the cylinder wall, the at least portion of a cylinder wall being integrally formed with the valve body; sealing the first end of the body; and inserting a valve stem into the valve body.
  • the present invention is alternatively directed to a cylinder having an integral valve body including a body having a cavity formed proximate to a first end and having a valve body formed proximate to a second end.
  • the valve body bears a hollow extending inwardly from the second end, the hollow is connected to the cavity via a tunnel.
  • a stem receiving shoulder is positioned proximate to the interface
  • a valve stem is positioned in the hollow and has a stem end with a beveled edge capable of forming a metal to metal seal with the stem receiving shoulder, a portion of the beveled edge is above a point of contact with the stem receiving shoulder while the metal to metal seal is formed.
  • the valve stem having a stem bore extending generally inwardly from the portion of the beveled edge above the point of contact, extending generally along the valve stem and extending to a connector positioned on the valve stem generally opposite from the stem end, wherein gas transfer occurs between the connector and the cavity, via the stem bore, while the valve stem is not engaged with the stem receiving shoulder and wherein gas transfer is optimally minimized while the metal to metal seal is formed.
  • the present invention is also alternatively directed to a method of forming a cylinder having an integral valve body capable of receiving a valve stem to form a metal to metal seal; the combination of the cylinder having an integral valve body and the valve stem being capable of stably containing gases without additional seal elements other than the metal to metal seal.
  • the method includes selecting a body comprised of material suitable for use in containing at least one gas and having a first and a second end, forming a valve body from a portion of the body proximate to the second end, and accessing an interior portion of the body by removing material from the first end of the body to form a cavity and to form at least a portion of a cylinder wall, the at least a portion of the cylinder wall being integrally formed with the valve body.
  • Fig. 1 is an elevational cross-sectional view of a cylinder having an integral valve body formed according to a first embodiment of the method of the present invention
  • Fig. 2 is an elevational cross-sectional view of a cylinder having an integral valve body formed according to a second embodiment of the method of the present invention
  • Fig. 3 is an elevational cross-sectional view of a cylinder having an integral valve body formed according to a third embodiment of the method of the present invention
  • Fig. 4 is an elevational cross-sectional view of a cylinder having an integral valve body formed according to a fourth embodiment of the present invention.
  • Figs. 5-8 illustrate various stages of the forming of the cylinder having an integral valve body formed according to the fourth embodiment of the present invention
  • Fig 9 is a flowchart illustrating a method of forming the cylinder having an integral valve body formed according to the present invention
  • valve stem and associated components have not been shown in Fig 1 to increase the clarity of the valve body and the cylinder It should be understood, however, that any valve stem, for example the valve stems shown in Figs 2-4, could be used for dispensing gas from the cylinder of Fig 1
  • valve stem 38 (further described below) be inserted in the valve body 14, 18 to form a metal to metal seal 52 (further described below) with the valve body 14, 18 to further reduce any back diffusion into the cylinder 12.
  • the cylinder having an integral valve body 10 is capable of receiving a valve stem 38 that forms a metal to metal seal 52 for stably containing gases without additional seal elements (the combination of the cylinder having an integral valve body 10 and the valve stem 38 not being considered seal elements).
  • the combination of the cylinder having an integral valve body 10 and the valve stem 38 require only one metal to metal seal 52 to stably contain gases in the cylinder 12.
  • a body 56 is selected that has a first and a second end 58A, 58B for containing at least one gas (see Fig. 5); a valve body is formed from a portion of the body near the second end (see Fig 1), material is removed from a first end of the body to form a cavity and at least a portion of the cylinder wall 24, 26 which is integrally formed with the valve body 14, 18 (see Fig. 6); and a valve stem 38 is inserted into the valve body 14, 18 to form a metal to metal seal 52 therebetween (See Fig. 8). While Fig.
  • valve 10 include a metal to metal seal 52 between the valve stem 38 and the valve body 14, 18, those of skill in the art will appreciate from this disclosure that other valve stems which do not form a metal to metal seal 52 can be used without departing from the scope of the present invention.
  • Figs. 1-4 illustrate various valve body configurations, those of skill in the art will appreciate from the present disclosure that the cylinder having an integral valve body 10 can be used with any type of valve as long as the valve body 14, 18 is integrally formed with the at least a portion of the cylinder wall 24, 26 without departing from the scope of the present invention. Referring to Figs.
  • the forming of a cylinder having an integral valve body 10 for containing gases preferably includes selecting a body 56 comprised of material suitable for use in containing at least one gas and having a first and a second end 58A, 58B.
  • the body 56 is preferably, but not necessarily, cylindrically shaped and is formed of a high strength, durable material suitable for containing gases, for example, aluminum, stainless steel, alloy, polymer or the like.
  • Forming a cylinder having an integral valve body 10 preferably includes forming a valve body 14, 18 from a portion of the body 56 proximate to the second end 58B.
  • the valve body 14, 18 is preferably, but not necessarily, longitudinally aligned with the cylinder 12 along an axis 34
  • a hollow 54 is preferably positioned in the valve body 14, 18 for receiving the valve stem 38
  • the hollow 54 is preferably connected to the cavity 32 via a first tunnel 60 A which is positioned through the valve body 14, 18 Referring to Figs.
  • the valve body 14, 18 has a gas transfer section 68 that preferably, but not necessarily, extends generally perpendicularly to the axis 34 and that projects generally outwardly from the valve body 14, 18
  • the gas transfer section 68 substantially surrounds a second tunnel 60B which opens to the atmosphere surrounding the cylinder with an integral valve body 10-10" and is connected to the hollow 54 in the valve body 14, 18.
  • the valve body 14, 18 preferably forms a path (consisting of the combination of the first tunnel 60 A, the hollow 54 and the second tunnel 60B) for the gases to be transferred between the cavity 32 and the surrounding atmosphere As best shown in Figs 2 and 3, the path may be blocked and the transfer of any gases interrupted depending upon the positioning of the valve stem 38 (further described below) While no connector is shown on the gas transfer section 68 for engaging coupling hoses (not shown) or the like to the valve body 14, 18, those of ordinary skill in the art will appreciate that various connectors (not shown) can be integrated with the valve body 14, 18 without departing from the scope of the present invention.
  • the valve body 14, 18 is preferably, but not necessarily, formed by boring the second end 58B of the body 56 to form the hollow 54.
  • the particular machinery used to bore the hollow 54 is known to those of ordinary skill in the art when considered in combination with this disclosure.
  • the hollow 54 is preferably, but not necessarily, generally cylindrically shaped
  • the forming of the valve body 14, 18 preferably, but not necessarily, includes forming at least one thread 41 in a portion of the hollow 54
  • the selection of the appropriate size and spacing of the at least one thread 41 for various sized valve bodies 14, 18 is within the ambit of one of ordinary skill in the art when considered in combination with this disclosure Accordingly, further details regarding the at least one thread 41 are neither necessary nor recited herein
  • valve body 14, 18 preferably, but not necessarily, includes polishing the hollow 54 in the valve body 14, 18
  • the particular method and machinery used for polishing the hollow 54 in the valve body 14, 18 is well known to those of ordinary skill in the art when considered in combination with this disclosure.
  • the polishing of the hollow 54 results in a tighter engagement between the valve body 14, 18 and the valve stem 38
  • the cylinder with an integral valve body 10 is preferably, but not necessarily, completed by inserting the valve stem 38 into the hollow 54 and engaging the valve stem 38 with the thread 41 on a portion of the valve body 14, 18
  • a knob 36 On the upper end of the valve stem 38 is a knob 36 to facilitate the turning and positioning of the stem shaft 40
  • the stem shaft 40 extends from a lower side of the knob 36 and into the hollow 54, preferably generally along the axis 34.
  • an enlarged portion 44 is preferably, but not necessarily, formed on the valve stem 40
  • the enlarged portion 44 preferably has a somewhat cylindrical shape and extends generally outwardly from the stem shaft 40.
  • the outer peripheral surface of the enlarged portion 44 preferably bears at least one corresponding thread (or at least one corresponding groove) 42 for engaging the thread 41 on the inner surface of the valve body 14, 18 which forms the hollow 54
  • raised portions 70 On an opposite side of the enlarged portion 44 of the stem shaft 40 from the knob 36 are raised portions 70 there are preferably two raised portions 70 which each preferably has a generally cylindrical shape extending outwardly from the stem shaft 40 The raised portions 70 are preferably spaced from each other to form a retaining groove 48 therebetween Although the retaining groove 48 is preferably generally rectangular in shape when viewed in cross-section (as shown in Figs 2 and 3), one skilled in the art will appreciate from this disclosure that other cross-sectional retaining groove 48 geometries may be employed, based upon specific application requirements, without departing from the scope of the present invention
  • seal 46 Seated in the retaining groove 48 is a seal 46
  • the seal 46 is preferably made of a resilient material, for example, an elastomeric or polymeric material, such as nitrile rubber
  • the seal 46 may be constructed of other flexible materials, such as fluoroelastomers, ethylene-propylene and other natural or synthetic elastomeric materials of any type having the necessary wear resistance and material characteristics for a particular application Selection of a suitable material for the seal 46 is within the capabilities of the skilled artisan
  • stem end 72 At the end of the stem shaft 40, opposite from the knob 36, is a stem end 72.
  • the outer periphery of stem end 72 is preferably beveled to form a beveled edge 64 as viewed in cross-section in Figs 2 and 3
  • the beveled edge 64 preferably engages the valve body 14, 18 (further described below)
  • the knob 36 is turned to rotate the enlarged portion 44 along the thread 41 on the inner surface of the hollow 54
  • the corresponding thread 42 on the enlarged portion 44 is rotated along the thread 41 on the inner surface of the hollow 54 to move the valve stem 38 in either the upward or downward direction as viewed in Figs. 1-3.
  • a stem movement limiting shoulder 50 is positioned in the hollow 54 between the thread 41 and the first tunnel 60 A to limit the range of movement of the valve stem 38 along the axis 34
  • the shoulder 50 preferably extends generally inwardly from the inner surface of the hollow 54 and is capable of abuttingly engaging the lower surface 74 of the enlarged portion 44 to prevent the valve stem 38 from being inserted too far into the valve body 14, 18.
  • the cylinder with an integral valve body 10 is preferably, but not necessarily, constructed by crimping the second end 58B of the body 56 to form the lip 62 which secures the valve stem in the hollow 54 of the valve body 14, 18
  • valve stem 38 having a generally straight configuration is also usable with the cylinder having an integral valve stem 10.
  • the valve stem 38 preferably extends from the bottom side of the knob 36 into the hollow 54 generally along the axis 34.
  • a portion of the stem shaft 40 bears the corresponding thread 42 which is engaged with the thread 41 on the inner surface of the hollow.
  • the stem end 72 opposite from the knob is preferably beveled to form a beveled edge 64
  • the beveled edge 64 contacts the stem receiving shoulder 66 to preferably form a metal to metal seal 52
  • On the second end 58B of the body 56 is a pre-crimped lip 63
  • the second end 58B is preferably crimped prior to using the cylinder 12 to secure the valve stem 38 in the valve body 14 (in a manner similar to that shown in Figs 2 and 3)
  • a connector 86 which is capable of receiving coupling hoses (not shown) or other gas transfer devices
  • the connector 86 preferably extends inwardly into the valve stem 38 from a gas transfer opening 82
  • the connector 86 preferably, but not necessarily, includes at least one connector thread 84 for engaging other gas transfer devices (not shown)
  • valve stem 38 When the valve stem 38 is not in the closed position, gas is transferable between the cavity 32 and the opening 82 via a path formed by the connector 86, a first stem bore 80A, a second stem bore 80B, the hollow 54 and the first tunnel 60A
  • the first stem bore 80A preferably extends from a portion of the beveled edge 64 (which is preferably positioned above the metal to metal seal 52 that is formed when the valve stem 38 is in the closed position) inwardly generally toward the center of the valve stem 38
  • the first stem bore 80 A preferably connects to the second stem bore 80 which extends generally along the axis 34 and connects to the connector 86
  • valve stem 38 used with the method of the present invention is not limited to any particular method of transferring gas through the valve stem 38
  • a single bore (not shown) can be used to transfer the gas from the hollow 54 to the opening 82 or multiple bores (not shown), for example, five or more bores, can be used to transfer gas through the valve stem 38 without depart
  • a metal to metal seal 52 is preferably formed between the valve stem 38 and the valve body 14, 18.
  • a stem receiving shoulder 66 Positioned at the lower end of the hollow 54 (as viewed in Figs. 1-3) is a stem receiving shoulder 66 which is preferably generally formed in a circular fashion about the first tunnel 60 A.
  • the beveled edge 64 of the stem end 72 engages the stem receiving shoulder 66 to form a metal to metal seal 52.
  • the metal to metal seal 52 is formed by the compression of the beveled edge 64 of the valve stem 38 with the stem receiving shoulder 66 of the valve body 14, 18.
  • the cylinder with an integral valve body 10 is preferably formed by accessing an interior portion of the body 56 by removing material from the first end 58 A of the body 56 to form a cavity 32 and to form at least a portion of a cylinder wall 24, 26.
  • material is removed from the first end 58A of the body 56 to form the cavity 32 and to form substantially the entire cylinder wall 26
  • Figs 2 and 3 illustrate cylinders having an integral valve body 10' where material is removed from the first end 58A of the body 56 to preferably form a portion of the cylinder wall 24 and to form a portion of the first tunnel 60 A A portion of the first tunnel 60 A also forms part of the cavity 32
  • the cylinders are bored so that the valve body preferably only forms a portion of the length of the cylinder wall 26
  • the at least a portion of the cylinder wall 24, 26 is integrally formed with the valve body 14, 18
  • the forming of a cylinder having an integral valve body 10 using the method of the second or third embodiment preferably, but not necessarily, includes polishing the cavity 32 in the body 56
  • the forming of a cylinder having an integral valve body 10 preferably includes sealing the first end 58 A of the body 56 after forming the portion of the cylinder wall 24, 26 to seal the cavity 32 along the first end 58A of the body 56
  • the cavity 32 is accessible, for the gas, via the valve body 14, 18
  • the sealing of the first end 58 A of the body 56 preferably includes inserting a plug 16 into the first end 58 A to form a base of the cylinder 12.
  • a recessed groove 28 is positioned in a lower end 30 of the cylinder wall 26
  • the recessed groove 28 engages a beveled edge 76 of the plug 16
  • the sealing of the first end of 58A of the body 56 preferably also includes welding the plug 16 to the portion of the cylinder wall 26
  • the selection of the appropriate welding method is within the ambit of the skilled artisan depending upon the particular material used to form the cylinder walls 26 and the particular aesthetic look desired Referring to Figs.
  • cylinders with integral valve bodies 10 formed according to the second or third embodiment of the method of the present invention use an enclosure 20 to form, in combination with the portion of the cylinder wall 24 formed by the valve body 14, substantially the entire cylinder wall 26
  • the second embodiment of the method of the present invention preferably includes selecting an enclosure 20 comprising a material suitable for containing the at least one gas having an opening 77
  • the enclosure 20 is preferably, but not necessarily, cylindrically shaped and is formed of a high strength, durable material suitable for containing gases, for example, aluminum, stainless steel, alloy, polymer or the like Additionally, the enclosure 20 may also be formed using materials commonly used for aerosol cans
  • the enclosure 20 is attached to the valve body 18 by engaging the enclosure 20 with the at least a portion of the cylinder wall 24 to form a substantially complete cylinder body 26
  • a shoulder 22 is preferably formed in the body 56 along the portion of the cylinder wall 24 suitable for engaging the enclosure 20
  • the shoulder 22 extends circumferentially around the first end 58A of the body 56
  • the enclosure 20 is preferably welded in place
  • the choice of welding methods is within the ambit of the skilled artisan when considered in combination with this disclosure and the particular materials used to form the enclosure 20 and the valve body 18
  • a cylinder having an integral valve body 10" formed according to the third embodiment of the method of the present invention includes selecting an enclosure 20 comprised of a material suitable for containing the at least one gas and having a first and second opening 78A, 78B
  • the enclosure 20 used in the third embodiment of the method of the present invention is preferably secured to the valve body 18 by engaging the first opening 78A of the enclosure 20 with the at least a portion of the cylinder wall 24 to form an extended cylinder wall 26
  • the enclosure 20 is shown as being flush with the portion of the cylinder wall 24, those of skill in the art will appreciate from this disclosure that the present invention is not limited to enclosures 20 that are flush with the portion of the cylinder wall 24
  • a shoulder 22 is preferably formed in the body 56 along the portion of the cylinder wall 24 suitable for engaging the enclosure 20
  • the shoulder 22 used in the third embodiment of the method of the present invention is preferably substantially the same as that used in the second embodiment of the method of the present invention
  • cylinders with an integral valve body 10 are readied for use by filling the cavity 32 with gas
  • the gas is preferably pressurized and filled into the cylinder through the gas transfer section 68 via the second tunnel 60B
  • the stem valve 38 is upwardly displaced to allow the hollow 54 to connect the second tunnel 60B with the first tunnel 60 A (or in the case of the cylinder having an integral valve body 10 formed according to the method of the fourth embodiment to connect the first tunnel 60A with the opening 82)
  • the gas flows into the cavity 32
  • the knob 36 of the stem valve 38 is rotated about the axis 34 to bring the stem end 72 into contact with the stem receiving shoulder 66 of the valve body 14, 18
  • This preferably creates a metal to metal seal 52 which prevents the gas in the cavity 32 from experiencing back diffusion
  • the lack of any seal between the valve body 14, 18 and the cylinder 12 eliminates a significant pathway for back diffusion and increases the amount of time that reactive gases can be contained in

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)

Abstract

L'invention concerne un cylindre pourvu d'un corps de soupape monobloc et un procédé de fabrication correspondant, lequel consiste à sélectionner un corps d'un matériau, à former un corps de soupape à partir du matériau, et à éliminer le matériau du corps de matériau afin de former au moins une partie de la paroi du cylindre, formée intégralement avec le corps de la soupape. L'intégration du cylindre avec le corps de soupape élimine le joint généralement présent dans des cylindres et soupapes classiques et, par conséquent, réduit considérablement la rétrodiffusion dans le cylindre possédant un corps de soupape monobloc. En outre, le cylindre et le corps de soupape de l'invention peuvent être utilisés conjointement à une tige de soupape constituant un joint métal sur métal avec le corps de soupape, ce qui rend superflu tout élément d'étanchéité, tel que des joints polymères ou élastomères. Ceci permet de réduire encore plus toute rétrodiffusion potentielle dans le cylindre. Le restant du cylindre est formé de préférence par un ou plusieurs types d'enceintes. Dans un mode de réalisation préféré, on utilise un corps de soupape de conception généralement droite. La diffusion considérablement réduite de ces cylindres à corps de soupape monobloc rend leur utilisation idéale comme cylindres miniatures transportables, sans mettre en danger leur capacité de contenir de gaz réactifs de manière stable.
PCT/US2000/005415 2000-03-01 2000-03-01 Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication Ceased WO2001065169A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2000235095A AU2000235095A1 (en) 2000-03-01 2000-03-01 A cylinder having an integral valve body and a method of making the same
PCT/US2000/005415 WO2001065169A1 (fr) 2000-03-01 2000-03-01 Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/005415 WO2001065169A1 (fr) 2000-03-01 2000-03-01 Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication

Publications (1)

Publication Number Publication Date
WO2001065169A1 true WO2001065169A1 (fr) 2001-09-07

Family

ID=21741110

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/005415 Ceased WO2001065169A1 (fr) 2000-03-01 2000-03-01 Cylindre pourvu d'un corps de soupape monobloc et procede de fabrication

Country Status (2)

Country Link
AU (1) AU2000235095A1 (fr)
WO (1) WO2001065169A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015078565A1 (fr) * 2013-11-26 2015-06-04 Daimler Ag Dispositif de stockage de gaz

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912225A (en) * 1958-07-29 1962-12-05 Rech S Tech Et Commerciales S Reservoir for fluid under pressure provided with a valve
FR2643126A1 (fr) * 1989-02-13 1990-08-17 Swedish Match Consumer Product Valve de remplissage pour reservoir rechargeable de gaz liquefie et son procede de fabrication
WO1992010702A1 (fr) * 1990-12-10 1992-06-25 Abbott, Martin, John, Blaney +Lm Recipient pour fluide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB912225A (en) * 1958-07-29 1962-12-05 Rech S Tech Et Commerciales S Reservoir for fluid under pressure provided with a valve
FR2643126A1 (fr) * 1989-02-13 1990-08-17 Swedish Match Consumer Product Valve de remplissage pour reservoir rechargeable de gaz liquefie et son procede de fabrication
WO1992010702A1 (fr) * 1990-12-10 1992-06-25 Abbott, Martin, John, Blaney +Lm Recipient pour fluide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015078565A1 (fr) * 2013-11-26 2015-06-04 Daimler Ag Dispositif de stockage de gaz

Also Published As

Publication number Publication date
AU2000235095A1 (en) 2001-09-12

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