WO2014014049A1 - 圧力容器 - Google Patents
圧力容器 Download PDFInfo
- Publication number
- WO2014014049A1 WO2014014049A1 PCT/JP2013/069495 JP2013069495W WO2014014049A1 WO 2014014049 A1 WO2014014049 A1 WO 2014014049A1 JP 2013069495 W JP2013069495 W JP 2013069495W WO 2014014049 A1 WO2014014049 A1 WO 2014014049A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pressure vessel
- flange portion
- resin
- base
- liner
- Prior art date
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Classifications
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- 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
- F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
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- 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
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- 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
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- 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)
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- 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
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- 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
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- 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
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- 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
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- 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
- F17C2203/0675—Synthetics with details of composition
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- 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
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- 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
- F17C2209/2118—Moulding by injection
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- 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
- F17C2209/2127—Moulding by blowing
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- 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
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- 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
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- 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
- F17C2223/035—High pressure (>10 bar)
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- 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)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
Definitions
- the present invention relates to a pressure vessel for containing gas, liquefied gas, and the like, and more particularly, to a pressure vessel having a liner body formed by blow molding and an FRP layer covering an outer surface of the liner body. More specifically, the present invention relates to a pressure vessel in which a flange portion of a base overlaps an inner side surface of the liner body.
- the pressure vessel is provided with a base constituting a gas inlet / outlet.
- This base is often made of metal.
- Patent Document 1 discloses a pressure vessel in which a liner body is formed by blow molding, and a flange portion included in a base overlaps an inner side surface of the liner body.
- 10 and 11 are cross-sectional views of the pressure vessel of Patent Document 1 and a diagram illustrating a manufacturing process.
- the pressure vessel 5 disclosed in Patent Document 1 includes a container body portion constituted by a blow-molded liner body 1 and an FRP layer 2 that covers the outer surface of the liner body 1, and the container body. And a base 3 provided in the portion.
- the base 3 includes a cylindrical portion 3b having a gas inlet / outlet port 3a, and a flange portion 3c formed to extend along the inner surface of the liner body 1 from the container inner end (lower end in FIG. 10) side of the cylindrical portion 3b. have.
- An adhesive resin layer 4 is interposed between the base 3 and the liner body 1.
- Patent Document 1 discloses that the adhesive resin layer 4 is formed of a polyethylene-based thermoplastic resin and increases the adhesive strength between the liner body 1 and the base 3.
- Patent Document 1 discloses the following method as a method of manufacturing the pressure vessel 5.
- the die 3 is supported by a support rod 6 and is disposed between a pair of liner body molding dies 7, and a parison 9 is formed from a die 8 of a blow molding machine around the outer periphery of the die 3. Hang in shape.
- the pair of molds 7 are clamped.
- the parison 9 in a soft state is pressed against the outer surface of the base 3. Due to the heat of the parison 9, the adhesive resin 4 provided on the outer surface of the base 3 is melted, and the parison 9 and the base 3 are bonded.
- the parison 9 is expanded and pressed against the inner surface of the mold 7, and the liner body 1 is formed.
- the outer surface of the liner body 1 is impregnated with a thermosetting resin such as an epoxy resin or an unsaturated polyester resin, a fiber yarn such as carbon fiber yarn or bundle, glass fiber yarn or bundle, bundle or mat.
- the FRP (CFRP, GFRP, etc.) layer 2 is formed by coating with, for example, and curing.
- the pressure vessel 5 disclosed in Patent Document 1 is easy to manufacture because it is formed by placing the base 3 between a pair of molds 7 and clamping the mold 3 and then blowing inside the parison 9. In this respect, the manufacturing cost can be reduced as compared with a known synthetic resin pressure vessel manufactured by disposing the base on the outer surface of the liner body or spin welding the base and the liner body.
- the base 3 is formed of metal or resin. If the base 3 is made of metal as a whole, the weight of the base 3 increases. In addition, the adhesion between the metal base and the resin liner body is insufficient, and the gas sealability at the interface between the two may be lowered.
- the present invention solves the above-described conventional problems, and has a blow molded liner body and an FRP layer covering the outer surface of the liner body, and a pressure vessel in which a flange portion of a base overlaps with an inner side surface of the liner body.
- An object of the present invention is to provide a pressure vessel having high bonding strength between the liner body and the base flange portion and excellent gas sealing performance at the interface between the two.
- a pressure vessel includes a liner body formed by blow molding, an FRP layer that covers an outer surface of the liner body, a cylindrical portion that penetrates the liner body and the FRP layer, and the cylinder.
- a mold body that covers the entire metal flange portion and has an annular resin flange portion that projects radially outward from the metal flange portion, is attached to the inner side surface of the liner body, and is formed of a synthetic resin.
- the resin flange portion has an upper side surface, an outer peripheral end surface, and a lower side surface, and the outer peripheral end surface is provided at a radially outward end portion of the resin flange portion,
- the liner body is the upper surface, Continuously covers the portion of the fine the outer peripheral end face.
- the upper side surface of the resin flange portion is a surface of the resin flange portion that faces the outside of the container
- the lower side surface of the resin flange portion is a surface of the resin flange portion that faces the inside of the container. is there.
- intersection angle ⁇ between the outer peripheral end surface and the upper side surface may be an acute angle.
- intersection angle ⁇ may be 20 ° to 60 °, and the height of the outer peripheral end face may be 1 to 30 mm.
- the mold body may continuously cover from the lower surface of the metal flange portion to the inner peripheral surface of the cylindrical portion.
- the metal flange portion may be provided with a through hole that communicates the upper side surface and the lower side surface of the metal flange portion, and the mold body may be filled in the through hole.
- the mold body is preferably formed by injection molding.
- the base has an annular shape that protrudes radially outward from the cylindrical portion from one end of the cylindrical portion and the cylindrical portion that penetrates the liner body and the FRP layer.
- a base body formed of metal, and a synthetic resin mold body covering at least the outer peripheral surface of the tubular part and the entire metal flange part of the base body. Therefore, it is lighter than a base made of only metal, and has higher strength and rigidity than a base made of only resin. Therefore, when the pressure vessel is blow-molded, the die is strongly pressed against the parison so that both are firmly attached, and the gas sealability between the die and the liner body (parison) can be enhanced.
- the inner surface of the liner body and the surface to be adhered are formed of a mold body, and therefore, the adhesion strength between the resin liner body and the mold body is high. This enhances the gas sealability between the base and the liner body.
- the crossing angle ⁇ between the outer peripheral end surface of the resin flange portion and the upper side surface is an acute angle. Therefore, when the base and the parison are pressed, the parison rises at the peripheral edge of the base, and the raised portion covers a part of the outer peripheral end face. Thereby, the gas-seal property between a nozzle
- the outer peripheral end portion of the base has high strength and rigidity because the outer peripheral portion of the flange portion (resin flange portion) of the base has an outer peripheral end face. Therefore, when the parison and the base are pressed, the outer peripheral end of the base is prevented from bending inward of the container. Therefore, the adhesion strength between the parison and the base is increased, and the gas sealing property between the base and the liner body is increased.
- the mold body covers at least the outer peripheral surface of the cylindrical portion and the entire metal flange portion of the base body.
- the metal flange portion exists in the flange portion of the base, the strength and rigidity of the base flange portion are increased.
- the mold body continuously covers from the lower surface of the metal flange portion to the inner peripheral surface of the cylindrical portion.
- the integrity of the mold body and the metal base body can be enhanced.
- the lower side surface of the metal flange portion is a surface of the metal flange portion that faces the inside of the container.
- the base body protrudes outward in the radial direction of the cylindrical portion from a cylindrical portion that penetrates the liner body and the FRP layer, and one end of the cylindrical portion. And an annular metal flange portion. Further, the metal flange portion is provided with a through hole that communicates the outer surface and the inner surface of the metal flange portion, and the through hole is filled with the mold body. Thereby, the mold body on the outer side surface of the metal flange portion and the mold body on the inner side surface are connected, and the integrity of the metal base body and the mold body can be enhanced.
- the mold body can be formed easily and at low cost by forming the mold body by injection molding.
- FIG. 3 is an enlarged view of the vicinity of the tip of the base flange portion shown in FIG. 2. It is sectional drawing which shows the manufacturing method of the pressure vessel which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the structure of the nozzle
- FIG. 2 shows a pressure vessel and a method for manufacturing the same according to a first embodiment of the present invention.
- the pressure vessel 10 shown in FIG. 2 includes a blown liner body 11, an FRP layer 12 that covers the outer surface of the liner body 11, a base 20 that includes an inner surface of the liner body 11 and a flange portion 21 that is attached.
- the base 20 passes through the liner body 11 and the FRP layer 12, and is composed of a metal base body 30 having a gas inlet / outlet 31 and an outer periphery of the base body 30. And a resin mold body 40.
- the outer shape of the top end portion (container outer end portion) 23 of the base 20 has a hexagonal shape so that a tool such as a spanner can be applied.
- the base body 30 forms the gas inlet / outlet port 31, and has a cylindrical part 32 that penetrates the inside and outside of the pressure vessel 10 in the cylinder axial direction, and a cylindrical part 32 from an end (lower end) inside the container of the cylindrical part 32. And an annular metal flange portion 33 projecting radially outward.
- the mold body 40 includes an outer peripheral surface of the cylindrical portion 32, an upper side surface of the metal flange portion 33 (a surface facing the liner body), a tip end of the metal flange portion 33, and a lower side surface of the metal flange portion 33 (the upper side surface). The surface on the opposite side is covered continuously.
- the mold body 40 covers the upper end surface (end surface on the outside of the container) of the cylindrical portion 32 of the base body 30, and further passes through the edge of the gas inlet / outlet port 31 from the lower side surface of the metal flange portion 33.
- an inner peripheral surface portion 47 that continuously covers up to the inner peripheral surface of the gas inlet / outlet port 31.
- a ridge 35 is provided in an annular shape toward the inner side in the radial direction of the base body 30 at an intermediate portion in the cylindrical axis direction on the inner peripheral surface of the base body 30.
- the inner peripheral surface portion 47 of the mold body 40 covers the inner peripheral surface of the gas inlet / outlet port 31 on the container inner side (lower end side of the cylindrical portion 32) than the ridge 35.
- a female screw 36 is formed on the inner peripheral surface of the gas inlet / outlet 31 on the outer side of the ridge 35, and a gas supply / takeout valve or the like can be screwed in and attached.
- the mold body 40 includes an annular resin flange portion 42 that projects outward in the radial direction of the metal flange portion 33 from the metal flange portion 33.
- the resin flange portion 42 is formed of an upper side surface, an outer peripheral end surface 43, and a lower side surface, and has a predetermined thickness.
- the upper surface of the resin flange portion 42 is formed to be flush with the upper surface of the upper surface portion 41 that covers the upper surface of the metal flange portion 33.
- the outer peripheral end face 43 is provided at the radially outward end of the resin flange portion 42.
- the height H of the outer peripheral end face 43 is preferably 1 to 30 mm, particularly 3 to 20 mm.
- the height H of the outer peripheral end surface 43 refers to the upper surface of the resin flange portion 42 (the upper surface of the upper surface portion 41) and the lower end of the outer peripheral end surface 43 (the end portion between the outer peripheral end surface 43 and the lower surface of the resin flange portion 42). Tangent line).
- intersection angle ⁇ between the outer peripheral end face 43 and the upper side surface of the resin flange portion 42 (upper surface of the upper surface portion 41) is preferably 10 ° to 85 °, more preferably 20 to 60 °, and particularly preferably 20 ° to 45 °. is there.
- a recess 44 is provided in an annular shape on the lower surface of the resin flange portion 42.
- the pressure vessel of this invention is not limited to the structure by which the concave surface is provided in the lower surface of the resin flange like this embodiment, The concave surface does not need to be provided in the lower surface of the resin flange.
- the mold body 40 is continuously formed from the lower end surface of the base body 30 to the mold body peripheral surface portion 47 through the corner edge of the gas inlet / outlet 31.
- the mold body 40 covers from the outer peripheral surface to the upper end surface of the cylindrical portion 32 of the base body 30.
- a step portion 46 for attaching a seal ring such as an O-ring is provided at the inner peripheral edge of the mold body top portion 49 constituting the upper end surface portion.
- the mold body 40 is preferably formed by injection molding.
- the base 20 is manufactured by placing the base body 30 in an injection mold and insert-molding the mold body 40.
- the base 20 is disposed between a pair of blow molding dies 51 so as to be supported by a support rod 52, and a circular die 54 is provided.
- a cylindrical parison 55 is extruded from the base, and the base 20 is surrounded by the parison 55.
- the molds 51 and 51 are clamped, and the parison 55 is pressed against the outer surface of the base 20.
- a gas such as air is blown into the parison 55 to expand the parison 55 and press it against the inner surfaces of the molds 51, 51 to blow-mold the liner body 11.
- the liner body 11 with the cap 20 is removed, and then an FRP layer is formed on the outer peripheral surface of the liner body 11 by a filament winding method or a tape winding method. Note that.
- the flange portion 21 When the parison 55 is pressed against the flange portion 21, the flange portion 21 is recessed into the parison 55, and a part of the liner body 11 formed from the parison 55 is placed on the outer peripheral end face 43 of the resin flange portion 42 as shown in FIG.
- the raised portion 11t covers a part of the outer peripheral end face 43. This prevents gas from entering the interface between the resin flange portion 42 of the mold body 40 and the liner body 11 from the pressure vessel 10 and improves the gas sealability at the interface.
- the intersection angle ⁇ between the upper side surface of the resin flange portion 42 and the outer peripheral end surface 43 is an acute angle
- the resin flange is formed between the hardened raised portion 11t and the liner body 11 formed on the upper side of the resin flange portion 42.
- the acute angle portion at the tip of the portion 42 is sandwiched. Accordingly, the bonding strength between the resin flange portion 42 and the liner body 11 is increased.
- the pressure vessel 10 of the present embodiment it is lighter than the case where the base 20 is made of only metal, and has high strength and rigidity including the resin flange portion 42 as described above.
- the mold body 40 is firmly attached. Therefore, the bonding strength between the liner body 11 and the mold body 40 is high, and the gas sealability at the interface between the liner body 11 and the mold body 40 is good. Further, since the liner body 11 has a raised portion 11t that covers a part of the outer peripheral end face 43, the interface between the liner body 11 and the resin flange portion 42 is covered with the raised portion 11t. Therefore, the pressure vessel 10 is excellent in interfacial gas sealability.
- the inner peripheral surface portion in which the mold body 40 continuously covers from the lower surface of the base body 30 (metal flange portion 33) to the inner peripheral surface of the gas inlet / outlet port 31 (tubular portion 32). 47.
- the integrity of the mold body 40 and the base body 30 is high, and the gas sealing property at the interface between the mold body 40 and the base body 30 is excellent.
- FIGS. 5 to 9 show caps used in pressure vessels according to other embodiments used in the pressure vessel of the present invention.
- FIG. 5 shows a base 20A used in a pressure vessel according to the second embodiment of the present invention.
- a base 20A shown in FIG. 5 includes a metal ring 60 that is provided on the upper side of a mold body top portion 49 that covers the upper end surface of the base body 30 and is formed of brass or the like.
- the upper surface of the mold body top portion 49 is a flat surface, and a seal ring installation portion 61 such as an O-ring is formed inside the inner peripheral surface of the metal ring 60 and on the upper surface of the mold body top portion 49. ing.
- the protrusion 35 on the inner peripheral surface of the gas inlet / outlet port 31 shown in the first embodiment is not provided.
- the mold body 40 is not provided with the inner peripheral surface portion 47 that covers the inner peripheral surface of the gas inlet / outlet port 31.
- Other configurations are the same as those of the base 20, and the same reference numerals indicate the same parts. Note that the configuration in which the inner peripheral surface portion 47 is not provided as in the present embodiment can be appropriately applied to other embodiments. In addition, a configuration including the inner peripheral surface portion 47 shown in the first embodiment described above can be appropriately applied to this embodiment.
- the metal ring 60 may be integrated with the mold body 40 by insert molding, or may be bonded to the mold body top portion 49 by an adhesive.
- FIG. 6 shows a base 20B used in a pressure vessel according to a third embodiment of the present invention.
- a base 20 ⁇ / b> B shown in FIG. 6 includes a ridge 48 provided in an annular shape on the upper surface of the mold body top portion 49 that covers the upper end surface of the base body 30, and a metal ring 60 provided on the outer peripheral side of the ridge 48. Further, a seal ring installation portion 61 is provided on the inner peripheral side of the ridge 48.
- Other configurations are the same as those of the second embodiment, and the same reference numerals denote the same parts.
- FIG. 7 shows a base 20C used in a pressure vessel according to the fourth embodiment of the present invention.
- the base 20C shown in FIG. 7 is not provided with the mold body top portion 49 shown in the first to third embodiments.
- the O-ring is attached to the outer peripheral surface of the distal end portion of the valve inserted into the gas inlet / outlet port 31 and is provided so as to be slidably in contact with the peripheral surface portion 47 of the mold body.
- Other configurations are the same as those of the base 20, and the same reference numerals indicate the same parts.
- FIG. 8 shows a base 20D used in a pressure vessel according to the fifth embodiment of the present invention.
- a base 20 ⁇ / b> D shown in FIG. 8 has irregularities 41 a formed on the upper surface portion 41 of the mold body 40. Thereby, the adhesion strength between the mold body 40 and the liner body 11 can be further increased.
- Other configurations are the same as those of the base 20, and the same reference numerals indicate the same parts.
- FIG. 9 shows a base 20E used for a pressure vessel according to a sixth embodiment of the present invention.
- a base 20E shown in FIG. 9 has an outermost peripheral portion (resin flange portion 42) of a mold body 40 having a triangular cross-sectional shape.
- the lower end of the outer peripheral end surface 43 and the recess 44 are slightly separated, but in the base 20E of FIG. The corner of the entrance is reached.
- Other configurations are the same as those of the base 20, and the same reference numerals indicate the same parts.
- a through hole 65 (broken line in FIG. 9) communicates with the metal flange portion 33 between the upper side surface and the lower side surface of the metal flange portion. Is provided). Further, the mold body 40 is filled in the through hole 65, and the mold body upper surface portion 41 and the mold body on the lower surface side of the metal flange portion 33 are connected by the mold body 40 filled in the through hole 65. Good.
- the outer peripheral surface of the cylindrical portion 32 of the base body 30 may not be covered with the mold body 40.
- the surface of the base body 30 may be roughened by sandblasting, shot blasting, cutting treatment or the like, or various surface treatments may be performed.
- the material of the liner body 11 is a polyolefin resin such as a high-density polyethylene resin, a cross-linked polyethylene, a polypropylene resin, or a cyclic olefin resin that contains a high-pressure gas filled in the pressure vessel 10 and has a gas barrier property that does not leak.
- a polyolefin resin such as a high-density polyethylene resin, a cross-linked polyethylene, a polypropylene resin, or a cyclic olefin resin that contains a high-pressure gas filled in the pressure vessel 10 and has a gas barrier property that does not leak.
- Polyamide resins such as nylon 6, nylon 6,6, nylon 11 and nylon 12
- polyester resins such as polyethylene terephthalate and polybutylene terephthalate, acrylonitrile-butadiene-styrene copolymer (ABS) resin, polyacetal resin, polycarbonate resin
- ABS acrylonitrile-butadiene-styrene copolymer
- Examples include engineering plastics such as polyphenylene ether resin, polyphenylene sulfide resin, polysulfone resin, or polyimide resin, but the material of the liner body 11 is limited to the materials described above. There.
- the liner body 11 may be composed of a single layer body, a multilayer body, or a composite material of the thermoplastic resin.
- a gas barrier resin such as engineering plastic, ethylene-vinyl alcohol copolymer (EVOH) or polyvinyl alcohol (PVA) resin, an elastomer, a metal member, or an inorganic filler is dispersed in a high-density polyethylene resin layer.
- the liner body 11 may be formed of a composite material, or a laminate having a multilayer structure including at least a thermoplastic resin layer / adhesive layer / barrier layer may be used.
- the engineering plastics mentioned above include various polyamide (PA) resins such as nylon 6, nylon 6,6, nylon 11 and nylon 12, various polyester resins such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), and acrylonitrile.
- PA polyamide
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- ABS acrylonitrile-styrene copolymer
- AS acrylonitrile-styrene copolymer
- PC polycarbonate
- POM polyacetal
- PPE polyphenylene ether
- PPS polyphenylene sulfide
- aromatic Polyester resin liquid crystal resin
- examples of the inorganic filler include talc, silica, calcium carbonate, and mica.
- fine powder talc or fine powder mica having a plate crystal structure with an average particle size of 0.5 to 10 ⁇ m is preferable.
- the material and structure of the synthetic resin liner material having a laminated structure include the above three-layer structure of thermoplastic resin layer / adhesive layer / barrier layer such as high-density polyethylene, thermoplastic resin layer / adhesive layer / barrier.
- Examples include a laminate formed of three or more layers, or a laminate formed of two layers of thermoplastic layer / adhesive layer.
- Examples of materials suitably used for the barrier layer include polyamide resin, polyester resin, ethylene-vinyl alcohol copolymer, polyvinyl alcohol resin, polyacrylonitrile resin, and the like.
- the winding method such as the filament winding method or the tape winding method for forming the FRP layer 12 may be any of helical winding, hoop winding, label winding, etc., and these may be used in combination. Further, as a winding method, specifically, for example, a method of winding a reinforcing fiber (bundle) while attaching a resin during a winding step, or a reinforcing fiber (bundle) (prepreg impregnated with a resin in advance). ). Further, the FRP layer may be formed by other methods such as a prepreg method in which a continuous reinforcing material such as a fabric is impregnated with a thermosetting resin.
- Examples of the reinforcing fiber for forming the FRP layer include carbon fiber, glass fiber, organic high elastic modulus fiber (for example, aramid fiber, ultrahigh strength polyester fiber), metal fiber, ceramic fiber, and the like. It can be used in combination with two or more.
- organic high elastic modulus fiber for example, aramid fiber, ultrahigh strength polyester fiber
- metal fiber for example, metal fiber, ceramic fiber, and the like. It can be used in combination with two or more.
- Examples of the resin for forming the FRP layer include epoxy resins, unsaturated polyester resins, urea resins, phenol resins, melamine resins, polyurethane resin polyimide resins, vinyl ester resins, and other thermosetting or photocurable resins, polyamide resins, Examples thereof include polyester resins such as polyethylene terephthalate and polybutylene terephthalate, engineering plastics such as ABS resin, polyether ketone and polyphenylene sulfide, and thermoplastic resins such as polypropylene and poly-4-methyl-1-pentene resin.
- Examples of the metal constituting the base body 30 include, but are not limited to, iron, aluminum, copper, nickel, titanium, or alloys thereof (for example, brass).
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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)
- Laminated Bodies (AREA)
Abstract
Description
本願は、2012年7月18日に、日本に出願された特願2012-159638号に基づき優先権を主張し、その内容をここに援用する。
特に、口金3の全体を樹脂で形成した場合、フランジ部3cの剛性が低くなる。そのため、金型7を型締めしてパリソン9を口金3の外側面に押し付けたときに、フランジ部3cが容器内方へたわんでしまい、パリソン9がフランジ部3cに十分に押し付けられず、ライナ体1と口金フランジ部3cとの接着強度が不足し、両者の界面のガスシール性が低くなるおそれがある。
そのため、圧力容器のブロー成形時に口金をパリソンに強く押し付けることにより両者を強固に付着させ、口金とライナ体(パリソン)との間のガスシール性を高くすることができる。
なお、本発明において、金属フランジ部の下側面とは、金属フランジ部のうち容器内方を向く面である。
図1~4に本発明の第1実施形態にかかる圧力容器及びその製造方法を示す。
図2に示す圧力容器10は、ブロー成形されたライナ体11と、ライナ体11の外側面を覆うFRP層12と、ライナ体11の内側面と被着するフランジ部21を備えた口金20とを有する。
なお、本発明の圧力容器は本実施形態のように樹脂フランジの下側面に凹条が設けられている構成に限定されず、樹脂フランジの下側面に凹条が設けられていなくてもよい。
なお。ブロー成形に際しては、口金20を室温以上に予熱しておくことが好ましい。
また、樹脂フランジ部42の上側面と外周端面43との交差角度θが鋭角であるので、硬化した盛り上り部分11tと樹脂フランジ部42の上側に形成されるライナ体11との間で樹脂フランジ部42の先端の鋭角部が挟み込まれた構造となる。従って、樹脂フランジ部42とライナ体11との結合強度が増大する。
図5は、本発明の第2実施形態に係る圧力容器に用いられる口金20Aを示す。
図5に示す口金20Aは、口金本体30の上端面を覆うモールド体トップ部49の上側に設けられ、黄銅などで形成される金属リング60を備える。なお、この実施の形態では、モールド体トップ部49の上面は平面であり、金属リング60の内周面の内側かつモールド体トップ部49の上面にOリング等のシールリング設置部61が形成されている。
なお、本実施形態のように内周面部47が設けられていない構成は、他の実施形態にも適宜適用可能である。また、本実施形態に上述の第1実施形態で示した内周面部47を含む構成も適宜適用可能である。
図6は、本発明の第3実施形態に係る圧力容器に用いられる口金20Bを示す。
図6に示す口金20Bは、口金本体30の上端面を覆うモールド体トップ部49の上面に環状に設けられる凸条48と、この凸条48の外周側に設けられる金属リング60とを有する。また、凸条48の内周側にシールリング設置部61が設けられている。その他の構成は第2実施形態と同一であり、同一符号は同一部分を示している。
図7は、本発明の第4実施形態に係る圧力容器に用いられる口金20Cを示す。
図7に示す口金20Cは、上述の第1~3実施形態で示したモールド体トップ部49が設けられていない。この場合、Oリングはガス出入口31に差し込まれるバルブの先端部外周面に装着され、モールド体内周面部47に摺動自在に接するように設けられる。その他の構成は上記口金20と同一であり、同一符号は同一部分を示している。
図8は、本発明の第5実施形態に係る圧力容器に用いられる口金20Dを示す。
図8に示す口金20Dは、モールド体40の上面部41に形成された凹凸41aを有する。これにより、モールド体40とライナ体11との付着強度をさらに高くすることができる。その他の構成は上記口金20と同一であり、同一符号は同一部分を示している。
図9は、本発明の第6実施形態に係る圧力容器に用いられる口金20Eを示す。
図9に示す口金20Eは、断面形状が三角形状のモールド体40の最外周部(樹脂フランジ部42)を有する。すなわち、上記の各口金20,20A~20Dでは、外周端面43の下端と凹条44との間が若干離隔しているが、図9の口金20Eでは、外周端面43の下端が凹条44の入口の角縁に達している。その他の構成は上記口金20と同一であり、同一符号は同一部分を示している。
11 ライナ体
11t 盛り上り部
12 FRP層
20,20A~20E 口金
21 フランジ部
30 口金本体
31 ガス出入口
32 筒状部
33 金属フランジ部
35 凸条
36 雌螺子
40 モールド体
41 上面部
42 樹脂フランジ部
43 外周端面
44 凹条
51 ブロー成形用金型
54 サーキュラダイ
55 パリソン
60 金属リング
Claims (6)
- ブロー成形によって形成されるライナ体と、
前記ライナ体の外側面を覆うFRP層と、
前記ライナ体と前記FRP層とを貫通する筒状部と前記筒状部の一端から前記筒状部の径方向外向きに張り出す環状の金属フランジ部とを有し、かつ金属で形成される口金本体と、前記口金本体のうち少なくとも前記筒状部の外周面及び前記金属フランジ部全体を覆い、前記金属フランジ部から径方向外向きに張り出す環状の樹脂フランジ部を有し、前記ライナ体の内側面と被着し、合成樹脂で形成されるモールド体と、を有する口金と、
を備え、
前記樹脂フランジ部は上側面、外周端面、及び下側面を有し、前記外周端面は、前記樹脂フランジ部の径方向外向きの端部に設けられており、前記ライナ体が前記上側面、及び前記外周端面の一部を連続して覆っている圧力容器。 - 請求項1に記載の圧力容器であって、
前記外周端面と前記上側面との交差角θが鋭角であることを特徴とする圧力容器。 - 請求項2に記載の圧力容器であって、
前記交差角θが20°~60°であり、前記外周端面の高さが1~30mmである圧力容器。 - 請求項1ないし3のいずれか一項に記載の圧力容器であって、
前記モールド体は、前記金属フランジ部の下側面から前記筒状部の内周面まで連続して覆っている圧力容器。 - 請求項1ないし4のいずれか一項に記載の圧力容器であって、
前記金属フランジ部に、前記金属フランジ部の上側面と下側面とを連通する貫通孔が設けられ、前記貫通孔に前記モールド体が充填されている圧力容器。 - 請求項1ないし5のいずれか1項において、前記モールド体は射出成形で形成される圧力容器。
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JP2013535161A JP5928473B2 (ja) | 2012-07-18 | 2013-07-18 | 圧力容器 |
EP13819854.4A EP2876351A4 (en) | 2012-07-18 | 2013-07-18 | PRESSURE VESSEL |
US14/414,768 US9523466B2 (en) | 2012-07-18 | 2013-07-18 | Pressure vessel |
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JP2012159638 | 2012-07-18 | ||
JP2012-159638 | 2012-07-18 |
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PCT/JP2013/069495 WO2014014049A1 (ja) | 2012-07-18 | 2013-07-18 | 圧力容器 |
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US (1) | US9523466B2 (ja) |
EP (1) | EP2876351A4 (ja) |
JP (3) | JP5928473B2 (ja) |
WO (1) | WO2014014049A1 (ja) |
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FR3025565A1 (fr) * | 2014-09-04 | 2016-03-11 | Inergy Automotive Systems Res | Insert monobloc surmoule avec un systeme d'etancheite |
CN106795895A (zh) * | 2014-09-04 | 2017-05-31 | 全耐塑料高级创新研究公司 | 包括插件的蓄压器 |
WO2016034823A1 (fr) * | 2014-09-04 | 2016-03-10 | Plastic Omnium Advanced Innovation And Research | Accumulateur de pression comprenant un insert |
EP3012507A1 (de) * | 2014-10-23 | 2016-04-27 | Magna Steyr Fuel Systems GesmbH | Verfahren und Werkzeug zur Herstellung eines Druckbehälters und Druckbehälter |
US9937653B2 (en) | 2014-10-23 | 2018-04-10 | Magna Steyr Fuel Systems Gesmbh | Method and tool for producing a pressure container and pressure container |
JP2016117224A (ja) * | 2014-12-22 | 2016-06-30 | 株式会社Fts | 圧力容器の製造装置 |
WO2016166326A1 (fr) * | 2015-04-15 | 2016-10-20 | Commissariat à l'énergie atomique et aux énergies alternatives | Procede de preparation de la coque interne d'un reservoir composite de type iv pour le stockage de fluide sous pression |
FR3035173A1 (fr) * | 2015-04-15 | 2016-10-21 | Commissariat Energie Atomique | Procede de preparation de la coque interne d'un reservoir composite de type iv pour le stockage de fluide sous pression |
EP3283812B1 (fr) | 2015-04-15 | 2020-03-18 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Procede de preparation de la coque interne d'un reservoir composite de type iv pour le stockage de fluide sous pression |
US11668436B2 (en) * | 2018-11-30 | 2023-06-06 | Lotte Chemical Corporation | Pressure vessel boss and pressure vessel having same |
JP7652444B2 (ja) | 2022-11-11 | 2025-03-27 | ドクサン エーテルシーティー カンパニー リミテッド | 圧力容器 |
Also Published As
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EP2876351A4 (en) | 2015-10-28 |
US9523466B2 (en) | 2016-12-20 |
US20150167893A1 (en) | 2015-06-18 |
JP5928473B2 (ja) | 2016-06-01 |
JP2015017709A (ja) | 2015-01-29 |
JPWO2014014049A1 (ja) | 2016-07-07 |
JP6409887B2 (ja) | 2018-10-24 |
EP2876351A1 (en) | 2015-05-27 |
JP2017072264A (ja) | 2017-04-13 |
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