WO2017105953A1 - Pressure vessel dome vents - Google Patents

Pressure vessel dome vents Download PDF

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Publication number
WO2017105953A1
WO2017105953A1 PCT/US2016/065307 US2016065307W WO2017105953A1 WO 2017105953 A1 WO2017105953 A1 WO 2017105953A1 US 2016065307 W US2016065307 W US 2016065307W WO 2017105953 A1 WO2017105953 A1 WO 2017105953A1
Authority
WO
WIPO (PCT)
Prior art keywords
interior
liner
flange
pressure vessel
boss
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/US2016/065307
Other languages
English (en)
French (fr)
Inventor
David Neil MORGAN
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.)
Hexagon Technology AS
Original Assignee
Hexagon Technology AS
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 Hexagon Technology AS filed Critical Hexagon Technology AS
Priority to KR1020187020132A priority Critical patent/KR102478330B1/ko
Priority to CA3006580A priority patent/CA3006580C/en
Priority to BR112018012424-9A priority patent/BR112018012424B1/pt
Priority to RU2018125651A priority patent/RU2726956C2/ru
Priority to ES16822301T priority patent/ES2898305T3/es
Priority to AU2016370273A priority patent/AU2016370273A1/en
Priority to EP16822301.4A priority patent/EP3390888B1/en
Priority to JP2018531464A priority patent/JP6902544B2/ja
Priority to PL16822301T priority patent/PL3390888T3/pl
Priority to CN201680074226.3A priority patent/CN108700255B/zh
Publication of WO2017105953A1 publication Critical patent/WO2017105953A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/04—Protecting sheathings
    • F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
    • 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
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2201/05—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
    • 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
    • F17C2203/0604—Liners
    • 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
    • F17C2203/0619—Single wall with two layers
    • 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
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • 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
    • 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
    • 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
    • F17C2203/0663—Synthetics in form of fibers or filaments
    • 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
    • F17C2205/0305—Bosses, e.g. boss collars
    • 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
    • F17C2209/2109—Moulding
    • 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
    • F17C2209/2154—Winding
    • F17C2209/2163—Winding with a mandrel
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/011—Oxygen
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • 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
    • F17C2260/011—Improving strength
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • Pressure vessels are commonly used for containing a variety of fluids under pressure, such as storing hydrogen, oxygen, natural gas, nitrogen, propane, methane, and other fuels, for example.
  • Suitable container shell materials include laminated layers of wound fiberglass filaments or other synthetic filaments bonded together by a thermal- setting or thermoplastic resin.
  • a polymeric or other non-metallic resilient liner or bladder often is disposed within the composite shell to seal the vessel and prevent internal fluids from contacting the composite material.
  • the composite construction of the vessels provides numerous advantages such as lightness in weight and resistance to corrosion, fatigue and catastrophic failure. These attributes are due at least in part to the high specific strengths of the reinforcing fibers or filaments that are typically oriented in the direction of the principal forces in the construction of the pressure vessels.
  • FIG. 1 illustrates an elongated pressure vessel 10, such as that disclosed in U.S.
  • Vessel 10 has a main body section 12 with end sections 14.
  • a boss 16, typically constructed of aluminum, is provided at one or both ends of the vessel 10 to provide a port for communicating with the interior of the vessel 10.
  • vessel 10 is formed with an inner polymer liner 20 covered by an outer composite shell 18.
  • composite means a fiber reinforced resin matrix material, such as a filament wound or laminated structure.
  • the composite shell 18 resolves structural loads on the vessel 10.
  • FIG. 2 illustrates a partial cross-sectional view, taken along line 2— 2 of FIG. 1, of a typical end section 14 including boss 16, such as that disclosed in U.S. Patent No. 5,429,845, entitled "Boss for a filament wound pressure vessel,” which is hereby incorporated by reference.
  • the boss 16 typically has a neck 21 and an annular flange 22.
  • shell 18 meets neck 21 at interface 19, and flange 22 is sandwiched between the liner 20 and the shell 18.
  • This construction secures the boss 16 to the vessel 10 and provides a seal at the interfaces between the boss 16, shell 18 and liner 20.
  • An exterior annular groove 30 in the exterior surface 62 of flange 22 accepts a complementary exterior annular tab 32 formed in liner 20.
  • an interior annular groove 34 in the interior surface 60 of flange 22 accepts an interior annular tab 38 formed liner 20.
  • the grooves 30, 34 and tabs 32, 38 secure the liner 20 to the boss 16.
  • the gas permeating the interface between the liner 20 and boss 16 can then have a higher pressure than the gas within vessel 10, such as, for example, when gas is being vented from the vessel 10.
  • the excess pressure between the liner 20 and boss 16 can cause the liner material to be forced out of the keyway.
  • the seal between flange 22 and liner 20 relies at least in part upon the tension of the liner 20 as wrapped around the flange 22. When the liner 20 stretches, it can cause a loss of tension and thus, a leak at the interface between the boss 16 and the liner 20.
  • this disclosure describes a pressure vessel having an interior chamber and comprising an outer shell, a boss fit to the outer shell, and an internal liner disposed within the outer shell.
  • the boss comprises a port extending between the interior chamber and an exterior of the pressure vessel; and an annular flange extending radially from the port and having an exterior surface and an interior surface.
  • the internal liner comprises an exterior portion adjacent the exterior surface of the flange; an interior portion adjacent the interior surface of the flange; and a vent in the interior portion.
  • this disclosure describes a method for forming a pressure vessel comprising mounting a boss on a mandrel, flowing a non-metallic polymer around a flange of the boss to form an internal liner of the pressure vessel, forming a vent in an interior portion of the liner; and forming an outer shell surrounding the liner and at least a portion of the flange of the boss.
  • the boss comprises a port configured for fluid communication between an interior chamber and an exterior of the pressure vessel; and an annular flange extending radially from the port and having an exterior surface and an interior surface.
  • the internal liner comprises an exterior portion adjacent the exterior surface of the flange; and an interior portion adjacent the interior surface of the flange.
  • a boss fit to the outer shell comprising:
  • annular flange extending radially from the port and having an exterior surface and an interior surface
  • the flange comprises a interior annular groove on the interior surface
  • the liner comprises an interior annular tab that is received within the interior annular groove
  • vent is positioned in the interior portion radially outward from the interior annular tab.
  • vent comprises an aperture formed through the interior portion of the liner to fluidly connect an interface between the annular flange and the liner with the interior chamber.
  • a method for forming a pressure vessel comprising:
  • boss mounting a boss on a mandrel, the boss comprising:
  • a port configured for fluid communication between an interior chamber and an exterior of the pressure vessel
  • annular flange extending radially from the port and having an exterior surface and an interior surface
  • the internal liner comprises:
  • forming the vent comprises creating an aperture through the interior portion of the liner to fluidly connect an interface between the annular flange and the liner with the interior chamber.
  • forming the vent comprises creating an aperture through the interior portion of the liner to fluidly connect an interface between the annular flange and the liner with the interior chamber.
  • FIG. 1 represents a side view of a typical pressure vessel.
  • FIG. 2 is a partial sectional view of one end of the vessel of FIG. 1 taken along line 2— 2 of FIG. 1 and showing a typical boss and liner.
  • FIG. 3 is an enlarged view of a portion of a dome-shaped end section of a pressure vessel, similar to FIG. 2, but shows an illustrative embodiment of the dome vent structures of the present disclosure.
  • FIG. 4 is a partial perspective sectional view, showing a more complete view of the dome vent structures of FIG. 3.
  • FIG. 5 is a sectional end view of the interior of the end section of a pressure vessel incorporating the dome vent structures of the present disclosure, such as taken along line 5— 5 of a pressure vessel, as shown in FIG. 1.
  • vents 52 provide a path through which gas may vent from between an interface of boss 16 and liner 20' to the interior chamber 55 of vessel 10'.
  • the interior chamber 55 is defined as the interior space within liner 20' . Because gas, if any, between the interface of boss 16 and liner 20' is allowed to escape through vents 52, such gas does not build up, and the vessel 10' exhibits a secure seal between a flange 22 of boss 16 and liner 20'.
  • FIGS. 3 - 5 show an illustrative embodiment of an exemplary pressure vessel 10' of the present disclosure, having a substantially hemispherical or dome-shaped end section 14' including a boss 16 (i.e., plumbing port) that is fit to outer shell 18 and liner 20' .
  • boss 16 is metallic and can be formed of carbon steel, for example.
  • Port 23 of boss 16 extends between an interior chamber 55 of pressure vessel 10' and an exterior of the pressure vessel 10'.
  • boss 16 has an annular flange 22 extending radially from port 23 and having interior surface 60 and exterior surface 62.
  • annular flange 22 has an annular interior groove 34 disposed on inner surface 60 of flange 22, and an annular exterior groove 30 located on exterior surface 62 of flange 22.
  • grooves 30, 34 are shaped to be wider at respective bottom walls 40, 44 than at respective openings 42, 46, to accept and retain tabs 32, 38 of liner 20' .
  • pressure vessel 10' includes a liner 20' disposed within shell 18.
  • An exemplary non-metallic liner 20' has an interior portion 68 adjacent interior surface 60 of flange 22 and an exterior portion 72 adjacent exterior surface 62 of flange 22.
  • Tabs 32, 38 extend annularly about boss 16 and have profiles that complement the shape of grooves 30, 34. Interior groove 34 accepts interior tab 38, thereby forming a mechanical interlock that secures liner 20' to boss 16. Exterior tab 32 is received into exterior groove 30, forming another mechanical interlock that further secures liner 20' to boss 16.
  • "Dovetail" type mechanical interlocks are shown; as used in this disclosure, the term “dovetail” describes a keyway or interlocking key configuration comprising a lip, notch, flare, projection or similar or corresponding structure so that a joint or joints (whether continuous or discontinuous) formed between the groove 30, 34 of boss 16 and interlocking tabs 32, 38 of liner 20' are structurally inhibited from separation.
  • the liner 20' can be made of plastic, elastomers, or other polymers, and can be manufactured by compression molding, blow molding, injection molding or any other generally known technique.
  • the liner 20' can be comprised of other materials, including steel, aluminum, nickel, titanium, platinum, gold, silver, stainless steel, and any alloys thereof. Such metals can be generally characterized as having a high modulus of elasticity.
  • the liner 20 is formed of blow molded high density polyethylene (HDPE).
  • a method of forming a pressure vessel 10' includes mounting a boss on a mandrel and allowing a fluid polymer material for liner 20' to flow around flange 22 and into grooves 30, 34 of boss 16. The liner material then solidifies, thereby forming exterior portion 72 adjacent exterior surface 62 of flange 22, including exterior tab 32 received within groove 30; and interior portion 68 adjacent interior surface 60 of flange 22, including interior tab 38 received within groove 34. Liner 20' is thereby mechanically interlocked with boss 16. Accordingly, even under extreme pressure conditions, separation of liner 20' from boss 16 is prevented.
  • Vents 52 may be formed during or after manufacture of liner 20' in any suitable manner, e.g., by drilling, molding, or puncturing, and may have any size or shape useful for allowing gas to flow from the interface of boss 16 and liner 20' into interior chamber 55.
  • vent 52 may be circular, elongated, or may comprise one or more regions of clustered openings. In a case where vent 52 is elongated, such an elongated vent may extend radially, circumferentially, or otherwise relative to port 23.
  • Vents 52 are shown as discrete holes (e.g., holes that are not fluidly connected to each other), but any suitable gas-permeable structure or mechanism for allowing gas to escape from between boss 16 and liner 20' into interior chamber 55 of pressure vessel 10' may be used.
  • FIG. 5 is a sectional end view of the interior of the end section 14' of pressure vessel 10'.
  • a plurality of vents 52 are symmetrically positioned about port 23.
  • four circular vent holes 52 are shown to be evenly-spaced about a circumference of boss 16, each an equal distance from port 23 of boss 16.
  • vents 52 may be provided in any size, number and at any location on interior portion 68 of liner 20' adjacent to flange 22, and particularly between interior tab 38 of liner 20' and distal edge 78 of flange 22. It is contemplated that even a single vent 52 may be sufficient, as any gas permeation through liner 20' will occur at a relatively low rate.
  • Outer shell 18 is formed surrounding the liner 20' and at least a portion of flange 22 of boss 16.
  • Suitable materials for shell 18 include a composite of laminated layers of wound fiberglass fibers or filaments or other synthetic filaments bonded together by a thermal- setting or thermoplastic resin.
  • the fiber may be fiberglass, ARAMID, carbon, graphite, or any other generally known fibrous reinforcing material.
  • the resin matrix used may be epoxy, polyester, vinyl ester, thermoplastic or any other suitable resinous material capable of providing fiber to fiber bonding, fiber layer to layer bonding, and the fragmentation resistance required for the particular application in which the vessel is to be used.
  • a dispensing head for the fibers moves in such a way as to wrap the fiber on the liner 20' in a desired pattern.
  • the vessel 10' is cylindrical, rather than spherical, fiber winding is normally applied in both a substantially longitudinal (helical) and a circumferential (hoop) wrap. This winding process is defined by a number of factors, such as resin content, fiber configuration, winding tension, and the pattern of the wrap in relation to the axis of the liner 20'. Details relevant to the formation of an exemplary pressure vessel are disclosed in U.S. Patent No. 4,838,971, entitled “Filament Winding Process and Apparatus," which is incorporated herein by reference.
  • vents 52 are provided through the interior portion 68 of liner 20' to fluidly connect an interior chamber 55 of vessel 10' and the interior surface 60 of flange 22 (e.g., at an interface between the annular flange 22 and the liner 20').
  • vent 52 is positioned between tab 38 of liner 20' and distal edge 78 of flange 22.
  • vent 52 is positioned in the interior portion 68 radially outward from the interior annular tab 38.
  • vent 52 extends through the entire thickness of the interior portion 68 of liner 20' .
  • each vent 52 was drilled into interior portion 68 of liner 20', each vent 52 positioned about 3 inches from the radial center of, and symmetrically about the circumference of, boss 16 of pressure vessel 10' .
  • each of the four vents 52 has a diameter of about 0.125 inch.
  • Pressure cycle testing was performed on this exemplary pressure vessel 10' using water from below 360 pounds per square inch (psi) to above 4,500 psi for 15,000 cycles. Following the pressure cycle testing, the pressure vessel 10' was leak tested and showed no signs of leakage. Moreover, the pressure vessel 10' showed no visible signs of liner bulging or other damage in the vicinity of interior portion 68.
  • vents 52 may be used on a pressure vessel 10'. Moreover, the vents 52 may be sized differently than in the exemplary embodiments. Additionally, while a plurality of vents 52 for a particular pressure vessel 10' may all be of the same size, shape, and symmetrically placed, it is also contemplated that vents 52 may alternatively possess a combination of different sizes, shapes, and placements in a single pressure vessel. [0028] Although the subject of this disclosure has been described with reference to several embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the scope of the disclosure.
  • interior groove 34 is illustrated as being radially inward on flange 22 compared to the placement of exterior groove 30, it is contemplated that interior groove 34 may be positioned radially outward on flange 22 compared to the placement of exterior groove 30.
  • flange 22 may have a different configuration than illustrated.
  • liner 20' may be formed to so that interior portion 68 and/or exterior portion 72 cover more or less of flange 22 than illustrated.
  • any feature disclosed with respect to one embodiment may be incorporated in another embodiment, and vice- versa.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
PCT/US2016/065307 2015-12-16 2016-12-07 Pressure vessel dome vents Ceased WO2017105953A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
KR1020187020132A KR102478330B1 (ko) 2015-12-16 2016-12-07 압력 용기 돔 배기구
CA3006580A CA3006580C (en) 2015-12-16 2016-12-07 Pressure vessel dome vents
BR112018012424-9A BR112018012424B1 (pt) 2015-12-16 2016-12-07 Vaso de pressão com uma câmara interna e método para formar um vaso de pressão
RU2018125651A RU2726956C2 (ru) 2015-12-16 2016-12-07 Сосуд под давлением, имеющий купольные вентиляционные отверстия и внутреннюю камеру, и способ образования сосуда под давлением
ES16822301T ES2898305T3 (es) 2015-12-16 2016-12-07 Salidas de ventilación de gas en forma de cúpula para recipiente a presión
AU2016370273A AU2016370273A1 (en) 2015-12-16 2016-12-07 Pressure vessel dome vents
EP16822301.4A EP3390888B1 (en) 2015-12-16 2016-12-07 Pressure vessel dome gas vents
JP2018531464A JP6902544B2 (ja) 2015-12-16 2016-12-07 圧力容器ドームの通気孔
PL16822301T PL3390888T3 (pl) 2015-12-16 2016-12-07 Odpowietrzniki gazu kopuły zbiornika ciśnieniowego
CN201680074226.3A CN108700255B (zh) 2015-12-16 2016-12-07 压力容器圆顶通气口

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US201562268342P 2015-12-16 2015-12-16
US62/268,342 2015-12-16
US15/363,013 US10627048B2 (en) 2015-12-16 2016-11-29 Pressure vessel dome vents
US15/363,013 2016-11-29

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EP (1) EP3390888B1 (https=)
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CN (1) CN108700255B (https=)
AU (1) AU2016370273A1 (https=)
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US11073240B2 (en) 2021-07-27
CA3006580C (en) 2022-11-01
RU2726956C2 (ru) 2020-07-17
EP3390888B1 (en) 2021-09-08
RU2018125651A3 (https=) 2020-01-21
PL3390888T3 (pl) 2022-01-24
KR20180094996A (ko) 2018-08-24
JP2019500557A (ja) 2019-01-10
CN108700255A (zh) 2018-10-23
KR102478330B1 (ko) 2022-12-15
US20200166180A1 (en) 2020-05-28
US20170175951A1 (en) 2017-06-22
EP3390888A1 (en) 2018-10-24
BR112018012424B1 (pt) 2022-11-29
BR112018012424A2 (pt) 2018-12-18
JP6902544B2 (ja) 2021-07-14
CN108700255B (zh) 2020-08-28
CA3006580A1 (en) 2017-06-22
AU2016370273A1 (en) 2018-06-14
RU2018125651A (ru) 2020-01-16
US10627048B2 (en) 2020-04-21
ES2898305T3 (es) 2022-03-07

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