WO2023043136A1 - High-pressure storage container and method for manufacturing same - Google Patents

High-pressure storage container and method for manufacturing same Download PDF

Info

Publication number
WO2023043136A1
WO2023043136A1 PCT/KR2022/013541 KR2022013541W WO2023043136A1 WO 2023043136 A1 WO2023043136 A1 WO 2023043136A1 KR 2022013541 W KR2022013541 W KR 2022013541W WO 2023043136 A1 WO2023043136 A1 WO 2023043136A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection pipe
boss
circumferential surface
sealing member
groove
Prior art date
Application number
PCT/KR2022/013541
Other languages
French (fr)
Korean (ko)
Inventor
임미소
백병운
Original Assignee
코오롱인더스트리 주식회사
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
Priority claimed from KR1020210190939A external-priority patent/KR20230040241A/en
Priority claimed from KR1020220060052A external-priority patent/KR20230040259A/en
Application filed by 코오롱인더스트리 주식회사 filed Critical 코오롱인더스트리 주식회사
Publication of WO2023043136A1 publication Critical patent/WO2023043136A1/en

Links

Images

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
    • 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
    • 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

  • the present invention relates to a high-pressure storage vessel and a method for manufacturing the same, and more particularly, to a high-pressure storage vessel for transporting or storing a fluid such as hydrogen and a method for manufacturing the same.
  • High-pressure storage vessels are generally used to store pressurized fluids such as hydrogen, natural gas, and oxygen therein.
  • High-pressure storage containers (high-pressure tanks) can be largely classified into four types according to materials used. Among them, the type-4 high-pressure storage container made by winding a composite material such as tow prepreg on a resin liner is lightweight and has excellent performance, so it is adopted as a fuel tank for hydrogen vehicles.
  • a boss forming an injection pipe in a high-pressure storage container is coupled with an external valve when fluid is injected.
  • a valve is made of a metal material
  • most of the bosses are also made of a metal material for a solid coupling between the boss and the external valve.
  • a resin liner is applied to the type-4 high-pressure storage container, securing bonding strength between the metal boss and the liner of a different material (resin material) is an important task.
  • the bonding surface between different materials has poor resistance to peeling, and thus airtightness and durability of the high-pressure storage container may be deteriorated.
  • the high-pressure storage container is used to store hydrogen fuel of a hydrogen vehicle, since charging and discharging of high-pressure (350 bar or more) hydrogen is repeated, separation between the liner and the boss is likely to occur.
  • conventional type-4 high-pressure storage containers are manufactured through injection molding.
  • the liner forming the storage space is generally divided into two bodies, injected, and then heat-sealed to each other. Due to this, it has been pointed out as a problem that the production speed is lowered in the process of injecting the two liner bodies, and that the heat welding area between the two bodies is wide and the welding strength deviation occurs.
  • the present invention is to solve the above problems, and an object of the present invention is to provide a high-pressure storage container and manufacturing method having a structure in which bonding strength between a boss made of metal and a liner made of resin is improved.
  • Another object of the present invention is to provide a high-pressure storage container with excellent manufacturing efficiency and performance, and a method for manufacturing the same, since the liner forming the storage space can be integrally molded at once without being separated and molded into two.
  • a liner having a storage body having a storage space for storing high-pressure fluid formed therein, and an injection pipe extending outwardly from one side of the storage body while communicating the storage space with the outside; and a tubular boss body penetrating along the longitudinal direction, and the boss body is formed by indenting from one end of the longitudinal direction of the boss body to the other side so that the boss body communicates the storage space with the outside and is coupled to the injection pipe.
  • a high-pressure storage vessel including a boss having a coupling groove to which a tube is coupled is provided.
  • the inner circumferential surface of the injection pipe is provided with a first tapered portion that decreases the inner diameter of the injection pipe from the outside toward the storage body, and the boss is provided on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe.
  • a second tapered portion corresponding to the first tapered portion may be provided.
  • At least a portion of the outer circumferential surface of the injection pipe is provided with a first concave-convex portion in which irregularities are repeated along the length direction, and the boss is provided with the first concave-convex portion on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe.
  • a second concavo-convex portion that engages may be provided.
  • the boss has a first groove recessed inward in a radial direction on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe, and the high-pressure storage container is seated in the first groove and the outer circumferential surface of the injection pipe It may further include a ring-shaped first sealing member in contact with the inner circumferential surface of the.
  • the boss has a second groove recessed outward in a radial direction on a surface of the inner surface of the coupling groove that contacts the outer circumferential surface of the injection pipe, and the high-pressure storage container is seated in the second groove and the inner circumferential surface of the injection pipe It may further include a ring-shaped second sealing member in contact with the outer circumferential surface of the.
  • any one of the first sealing member and the second sealing member has a recessed portion recessed radially outward or inward on a surface in contact with the injection pipe, and upper and lower portions of the recessed portion are the outer circumferential surface of the injection pipe or the It can make surface contact with the inner circumferential surface of the injection tube.
  • the other one of the first sealing member and the second sealing member may contact the inner circumferential surface of the injection pipe or the outer circumferential surface of the injection pipe at a position facing the recessed portion with the injection pipe interposed therebetween.
  • the storage body may include a seating portion formed in a ring shape around the injection pipe, and a radially outer portion of one end of the boss body in a longitudinal direction from the coupling groove may be seated on the seating portion.
  • the boss has a third groove circularly recessed in a surface of the boss body in contact with the seating portion, and the high-pressure storage container is applied to the third groove to provide bonding force between the boss and the seating portion. It may further include a first adhesive that does.
  • the high-pressure storage container may further include a second adhesive applied to an outer circumferential surface of the injection tube and the seating portion.
  • the boss is recessed radially outward on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe and has a first groove opened toward one end side in the longitudinal direction of the boss body
  • the high-pressure storage container is a ring-shaped first sealing member seated in the first groove and having an inner circumferential surface in contact with an outer circumferential surface of the injection pipe; and a reinforcing ring disposed to fill a gap between the first sealing member and the liner.
  • the boss has a first groove recessed inward in a radial direction on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe, and the high-pressure storage container is seated in the first groove and the outer circumferential surface of the injection pipe A ring-shaped first sealing member in contact with the inner circumferential surface of the; and a ring-shaped first backup member seated together with the first sealing member in the first groove to prevent the first sealing member from being inserted between the inner surface of the coupling groove and the inner circumferential surface of the injection tube.
  • the first backup member may be disposed outside the storage body compared to the first sealing member.
  • the first backup member may have a square cross section.
  • the boss further includes a second groove recessed outward in a radial direction on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe, and the high-pressure storage container is seated in the second groove and the inner circumferential surface is the injection tube.
  • the second sealing member may be disposed outside the storage body compared to the second backup member.
  • the second sealing member may have a square cross section.
  • the high-pressure storage container may further include a second sealing member disposed between an inner surface of the coupling groove and an outer end surface of the injection tube.
  • the high-pressure storage container integrally molding the liner by a blow molding method; and assembling and combining the liner and the boss.
  • the high-pressure storage container and method of manufacturing the same according to the present invention improve the bonding force between the liner and the boss through the fitting structure of the liner injection pipe and the boss.
  • the high-pressure storage vessel and method for manufacturing the same according to the present invention enable a liner to be integrally molded through a blow molding method and then assembled with a boss, through which the productivity of the high-pressure storage vessel can be increased.
  • FIG. 1 is a cross-sectional view showing the configuration of a high-pressure storage vessel according to a first embodiment of the present invention.
  • FIG. 2 is a view showing a state in which the liner and the boss of the high-pressure storage container are separated from each other according to the first embodiment of the present invention.
  • FIG 3 is a view showing a coupled state between the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention.
  • FIG. 4 is an enlarged view of part A of FIG. 3 .
  • FIG. 5 is a perspective view of the second sealing member of the high-pressure storage vessel according to the first embodiment of the present invention.
  • FIG. 6 is a cross-sectional view showing a high-pressure storage vessel according to a second embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing a high-pressure storage vessel according to a third embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing a high-pressure storage vessel according to a modified example of the third embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing a high-pressure storage vessel according to another modified example of the third embodiment of the present invention.
  • FIG. 10 is a flowchart of a method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention.
  • Words and terms used in this specification and claims are not construed as limited in their ordinary or dictionary meanings, but in accordance with the principle that the inventors can define terms and concepts in order to best describe their inventions. It should be interpreted as a meaning and concept that corresponds to the technical idea.
  • FIG. 1 is a cross-sectional view showing the configuration of a high-pressure storage vessel according to a first embodiment of the present invention.
  • 2 shows a separated state of the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention
  • FIG. 3 shows the coupled state of the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention.
  • the high-pressure storage vessel according to the first embodiment of the present invention may be used to store a fluid such as hydrogen in a high-pressure state therein.
  • the high-pressure storage vessel according to the first embodiment of the present invention may be a type-4 high-pressure tank made by winding a composite material around a resin liner.
  • the high pressure storage vessel may include a liner 110, a boss 120, a first sealing member 130 and a second sealing member 140.
  • the liner 110 provides a storage space (S) in which high-pressure fluid is stored.
  • the liner 110 may be made of a resin material. More specifically, the liner 110 may be made of a polymer material. For example, the liner 110 may be made of high density plastic material (HDPE).
  • HDPE high density plastic material
  • the liner 110 may include a storage body 111 and an injection tube 112.
  • the storage body 111 and the injection tube 112 may be integrally molded.
  • the storage body 111 and the injection tube 112 may be formed by blow molding.
  • the storage body 111 has a storage space (S) for storing high-pressure fluid therein.
  • the high-pressure fluid may be hydrogen.
  • the storage body 111 may be formed in a cylindrical shape.
  • the storage body 111 may have a sealed shape except for a connection portion with the injection pipe 112 .
  • the storage body 111 may have a seating portion 111a formed in a ring shape around the injection pipe 112 .
  • the seat portion 111a may contact an outer portion in the radial direction based on the coupling groove 122 of one end surface of the boss body 121 of the boss 120 in the longitudinal direction.
  • one or more protrusions 111b protruding outward may be provided in the seating portion 111a.
  • a plurality of protrusions 111b may be provided at a predetermined interval. The protrusion 111b is inserted into the fixing groove 128 of the boss 120 to be described later to prevent the boss 120 from rotating while being coupled with the liner 110 .
  • the injection pipe 112 communicates the storage space S with the outside and extends from one side of the storage body 111 to the outside. More specifically, the injection tube 112 may have a cylindrical shape. In the first embodiment of the present invention, the injection pipe 112 may be formed integrally with the storage body 111, and the storage space (S) of the storage body 111 communicates with the outside through the injection pipe 112 It can be.
  • a first tapered portion 113 may be provided on the inner circumferential surface of the injection pipe 112 to decrease the inner diameter of the injection pipe 112 toward the storage body 111 from the outside. At this time, the first taper-shaped portion 113 may be formed over the entire inner circumferential surface of the injection pipe 112 .
  • the injection pipe 112 is fitted into the coupling groove 122 of the boss 120 to be described later, and the boss 120 has a first taper on the inner surface of the coupling groove 122 in contact with the inner circumferential surface of the injection pipe 112.
  • a second tapered portion 123 corresponding to the shaped portion 113 may be provided. The first tapered portion 113 and the second tapered portion 123 may be engaged with each other and provide strong fastening force.
  • At least a portion of the outer circumferential surface of the injection tube 112 may be provided with a first uneven portion 114 having repeated irregularities along the longitudinal direction.
  • the boss 120 may include a second concave-convex portion 124 engaged with the first concave-convex portion 114 on an inner surface of the coupling groove 122 that contacts the outer circumferential surface of the injection pipe 112 .
  • the first concave-convex portion 114 and the second concave-convex portion 124 may be engaged with each other to provide additional fastening force.
  • the boss 120 is a part to which a valve for injecting fluid into the high-pressure storage container is coupled.
  • the boss 120 may be made of a metal material.
  • the boss 120 may be made of aluminum.
  • the boss 120 includes a boss body 121, a coupling groove 122, a second tapered portion 123, a second concave-convex portion 124, a first groove 125, a second groove 126, a third A groove 127, a fixing groove 128 and a screw thread 129 may be provided.
  • the boss body 121 is a tubular member penetrated along the longitudinal direction.
  • the boss body 121 communicates the storage space S with the outside and is coupled to the injection pipe 112. More specifically, the boss body 121 may be disposed in contact with the inner circumferential surface, the outer end surface and the outer circumferential surface of the injection pipe 112 and the seating portion 111a of the storage body 111 . In a state where the boss 120 is coupled to the injection tube 112, the through portion formed along the longitudinal direction of the boss body 121 may serve as a passage through which the storage space S communicates with the outside.
  • a radially outer portion of the coupling groove 122 of one end of the boss body 121 in the longitudinal direction may be seated on the seating portion 111a of the storage body 111 .
  • one end 121a in the longitudinal direction of the boss body 121 may protrude outward in the radial direction to have a flange shape, and the end surface of the end 121a in the longitudinal direction of the boss body 121 constituting the flange shape
  • the side surface may be disposed in contact with the seating portion 111a.
  • a portion of the boss body 121 in contact with the inner circumferential surface of the injection tube 112 may additionally protrude toward one end of the boss 120 in the longitudinal direction.
  • the inner circumferential side of the injection pipe 112 is longer than the outer circumferential side by the thickness of the storage body 111.
  • a portion of the boss body 121 in contact with the inner circumferential surface of the injection pipe 112 additionally protrudes toward one end of the boss 120 in the longitudinal direction so that the inner circumferential surface of the injection pipe 112 can be supported by the boss body 121 as a whole. and structural stability can be improved.
  • the coupling groove 122 is formed by being recessed from one end of the longitudinal direction of the boss body 121 to the other side so that the boss body 121 communicates the storage space S with the outside and is coupled to the injection pipe 112. Coupling groove 122 may be formed so that the injection tube 112 is fitted.
  • the second tapered portion 123 is formed on a surface of the inner surface of the coupling groove 122 that comes into contact with the inner circumferential surface of the injection tube 112 .
  • the second tapered portion 123 is provided in a shape corresponding to the first tapered portion 113 .
  • the first taper-shaped portion 113 is provided to decrease the inner diameter of the injection tube 112 toward the storage body 111 from the outside, and the second taper-shaped portion 123 has the first taper shape It is engaged with the part 113 and can provide a strong fastening force.
  • the second concave-convex portion 124 is formed on a surface of the inner surface of the coupling groove 122 in contact with the outer circumferential surface of the injection pipe 112 .
  • the second concave-convex portion 124 is provided to engage with the first concave-convex portion 114 in a state in which the boss 120 is fastened to the liner 110 .
  • the second concave-convex portion 124 may provide additional fastening force while engaging with the first concave-convex portion 114 .
  • the second concave-convex part 124 has relatively high strength, so during the fastening process of the boss 120, the second concave-convex part 124 ), while the first concave-convex portion 114 is crushed, a stronger fastening force may be generated.
  • the first groove 125 is formed by being recessed inward in the radial direction on a surface of the inner surface of the coupling groove 122 in contact with the inner circumferential surface of the injection pipe 112 .
  • the first sealing member 130 may be seated in the first groove 125 .
  • the outer circumferential surface of the first sealing member 130 disposed in the first groove 125 may contact the inner circumferential surface of the injection pipe 112 and provide fastening force and airtightness.
  • the second groove 126 is formed by being recessed outward in the radial direction on a surface of the inner surface of the coupling groove 122 in contact with the outer circumferential surface of the injection pipe 112 .
  • the second sealing member 140 may be seated in the second groove 126 .
  • the inner circumferential surface of the second sealing member 140 disposed in the second groove 126 may contact the outer circumferential surface of the injection pipe 112 and provide fastening force and airtightness.
  • the first groove 125 and the second groove 126 may be formed at positions facing each other. Since the first groove 125 and the second groove 126 are formed in this way, the first sealing member 130 and the second sealing member 140 are connected to the injection tube in a state where the boss 120 is coupled to the liner 110. It can be disposed at a position facing each other with 112 interposed therebetween, and the fastening force and airtightness between the boss 120 and the liner 110 can be provided more effectively.
  • the third groove 127 is formed by circularly indenting the outer surface of the boss body 121 in contact with the seating portion 111a of the storage body 111 .
  • a first adhesive 150 may be applied to the third groove 127 to provide bonding force between the boss 120 and the mounting portion 111a.
  • the fixing groove 128 is formed by being embedded in a surface of the boss body 121 in contact with the seating portion 111a. As described above, a plurality of outwardly protruding protrusions 111b may be provided in the seating portion 111a at a predetermined interval.
  • the fixing groove 128 may be formed in plurality with a shape corresponding to a position corresponding to the protrusion 111b. In a state in which the boss 120 is fastened to the liner 110, the protrusion 111b is inserted into the fixing groove 128, and through this, rotation of the boss 120 can be prevented. More specifically, when a shell (not shown) for pressure resistance is wound on the outer circumferential surface of the liner 110 after the boss 120 and the liner 110 are fastened, the boss 120 rotates with respect to the liner 110. can be prevented
  • the thread 129 is formed on the inner circumferential surface of the boss body 121 penetrating along the longitudinal direction.
  • the screw thread 129 may be provided for screw coupling between the valve and the boss 120 when the external valve (not shown) and the boss 120 are coupled.
  • the first sealing member 130 is seated in the first groove 125 and its outer circumferential surface contacts the inner circumferential surface of the injection pipe 112 .
  • the first sealing member 130 may have a ring shape.
  • the first sealing member 130 may be an O-ring. Referring to FIG. 4, in a state in which the boss 120 and the liner 110 are fastened, the first sealing member 130 faces the second sealing member 140 with the injection pipe 112 interposed therebetween. It may contact the inner circumferential surface of the injection tube 112.
  • the second sealing member 140 is seated in the second groove 126 and its inner circumferential surface contacts the outer circumferential surface of the injection pipe 112 .
  • the second sealing member 140 may have a ring shape. Referring to FIGS. 4 and 5 , the second sealing member 140 includes a ring-shaped sealing body 141 and a recessed portion 142 recessed radially outward from the central portion of the inner circumferential surface of the sealing body 141 . Based on the recessed portion 142, the upper portion 141a of the sealing body 141 and the lower portion 31b of the sealing body 141 may come into contact with the outer circumferential surface of the injection pipe 112. In addition, the recessed portion 142 of the second sealing member 140 may be disposed at a position facing the first sealing member 130 with the injection pipe 112 interposed therebetween.
  • first sealing member 130 and the second sealing member 140 are disposed facing each other with the injection pipe 112 interposed therebetween, and the second sealing member 140 with respect to the recessed portion 142
  • the upper part 141a and the lower part 141b are in surface contact with the outer circumferential surface of the injection pipe 112, and the first sealing member 130 is on the inner circumferential surface of the injection pipe 112 at a position facing the recessed portion 142
  • the first adhesive 150 and the second adhesive 160 may be applied to improve adhesion and secure airtightness.
  • the first adhesive 150 may be applied to the third groove 127 to provide bonding force between the boss 120 and the seating portion 111a.
  • the first adhesive 150 may be a structural adhesive. More specifically, the first adhesive 150 may include any one or more of an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, and a cyanoacryl-based adhesive.
  • the second adhesive 160 may be applied to the outer circumferential surface of the injection tube 112 and the seating portion 111a to provide airtightness and fastening force.
  • the second adhesive 160 may be applied in a spray form to the outer circumferential surface of the injection tube 112 and the seating portion 111a before the boss 120 is fastened.
  • the second adhesive 160 may include any one or more of an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, and a cyanoacryl-based adhesive.
  • the second adhesive 160 may be of the same type as the first adhesive 150 .
  • the engagement force between the first tapered portion 113 and the second tapered portion 123, the first concave-convex portion 114 and the second concave-convex portion Provides the interlocking force of 124, the fastening force and airtightness by the first sealing member 130 and the second sealing member 140, the fastening force and airtightness by the first adhesive 150 and the second adhesive 160 do. Due to this, in the case of the high-pressure storage container according to an embodiment of the present invention, strong bonding force and airtightness between the liner 110 and the boss 120 can be secured.
  • FIG. 6 is a cross-sectional view showing a high-pressure storage vessel according to a second embodiment of the present invention.
  • the high pressure storage container includes a liner 210, a boss 220, a first sealing member 230, a second sealing member 240 and a reinforcing ring 270.
  • boss body 221 of the boss 220, the coupling groove 222, the second tapered portion 223, the second uneven portion 224, the first groove 225, the third groove 227, The fixing groove 228 and the screw thread 229 are the same as those described with respect to the boss 120 of the first embodiment.
  • first sealing member 230, the second sealing member 240 and the first adhesive 250 are also the same as those of the first embodiment.
  • the high-pressure storage vessel according to the second embodiment of the present invention has a different shape of the second groove 226 compared to the first embodiment, and additionally includes a reinforcing ring 270.
  • a reinforcing ring 270 In relation to the second embodiment of the present invention, only the second groove 226 and the reinforcing ring 270 will be described in detail.
  • the second groove 226 is recessed radially outward on the inner surface of the coupling groove 222 of the boss 220 and in contact with the outer circumferential surface of the injection pipe 12, but the boss body 121 ) is formed by opening to one end side in the longitudinal direction of the. Since the second groove 226 is formed in this way, the second sealing member 240 can be easily inserted into the second groove 226 .
  • the reinforcing ring 270 is a ring-shaped member and is disposed to fill a gap between the second sealing member 240 and the liner 210 in a state in which the second sealing member 240 is inserted into the second groove 226 . More specifically, the reinforcing ring 270 is disposed to fill the gap between the second sealing member 240 and the seating portion 211a of the storage body 211 to provide airtightness. At this time, the outer circumferential surface of the reinforcing ring 270 may be disposed in contact with the inner surface of the second groove 226 .
  • an adhesive may be disposed between the reinforcing ring 270 and the second sealing member 240 or between the reinforcing ring 270 and the seating portion 211a or between the reinforcing ring 270 and the inner surface of the second groove 226. may be
  • the reinforcing ring 270 may be made of the same material as the boss 220 (eg, aluminum). Of course, the reinforcing ring 270 is made of any other material within the limit of filling the gap between the second sealing member 240 and the seating portion 211a of the storage body 211 and providing airtightness. It could be.
  • FIG. 7 is a cross-sectional view showing a high-pressure storage vessel according to a third embodiment of the present invention.
  • the high-pressure storage vessel may include a liner 310, a boss 320, a first sealing member 330, and a backup member 340.
  • the storage body 311 of the liner 310, the injection pipe 312, and the first concave-convex portion 313 are the same as those described in relation to the liner 110 of the first embodiment.
  • the boss body 321, the coupling groove 322, the second uneven portion 323, the first groove 324, and the screw thread 325 of the boss 320 are the same as those of the boss 120 of the first embodiment. .
  • the high-pressure storage vessel according to the third embodiment of the present invention includes the first backup member 340, which is not included in the high-pressure storage vessel according to the first embodiment.
  • the first sealing member 330 and the first backup member 340 are indented radially inward on the inner surface of the coupling groove 322 in contact with the inner circumferential surface of the injection pipe 312 They are disposed together inside the formed first groove 324 .
  • the first sealing member 330 is seated in the first groove 324 and its outer circumferential surface contacts the inner circumferential surface of the injection pipe 312 .
  • the first sealing member 330 may have a ring shape.
  • the first sealing member 130 may be an O-ring.
  • the first sealing member 330 blocks the outflow of fluid from the storage space S into the gap between the inner circumferential surface of the injection pipe 312 and the inner surface of the coupling groove 322 .
  • the first backup member 340 is a first sealing member 330 in the first groove 324 to prevent the first sealing member 330 from being inserted between the inner surface of the coupling groove 322 and the inner circumferential surface of the injection pipe 312 ) is settled with
  • the first backup member 340 may have a ring shape.
  • An outer circumferential surface of the first backup member 340 may be in close contact with an inner circumferential surface of the injection pipe 312 .
  • the first backup member 340 may be disposed outside the storage body 311 compared to the first sealing member 330 .
  • pressure is generated from the side of the storage body 311 to the outside. Therefore, in order for the first backup member 340 to function effectively, it must be disposed outside the storage body 311 compared to the first sealing member 330. desirable.
  • the first backup member 340 may have a square cross section.
  • the first backup member 340 may be made of polyether ether ketone (PEEK) material.
  • FIG. 8 is a cross-sectional view showing a high-pressure storage vessel according to a modified example of the third embodiment of the present invention.
  • the boss 320 extends outward in the radial direction on the surface of the inner surface of the coupling groove 322 in contact with the outer circumferential surface of the injection pipe 312.
  • a recessed second groove 326 is further provided.
  • the high-pressure storage vessel according to the modified example of the third embodiment of the present invention is seated in the second groove 326 and has an inner circumferential surface in contact with the outer circumferential surface of the injection pipe 312, the ring-shaped second sealing member 330a and the second A ring-shaped second backup seated together with the second sealing member 330a in the second groove 326 to prevent the sealing member 330a from being wedged between the inner surface of the coupling groove 322 and the outer circumferential surface of the injection pipe 312 A member 340a is further included.
  • the second sealing member 330a In the second sealing member 330a, the fluid flowing out from the storage space S into the gap between the inner circumferential surface of the injection pipe 312 and the inner surface of the coupling groove 322 flows through the outer circumferential surface of the injection pipe 312 and the coupling groove 322. It blocks outflow to the outside through the gap between the inner surfaces of the That is, the second sealing member 330a supplements the sealing function of the first sealing member 330 and provides additional sealing force.
  • the second sealing member 330a may be an O-ring.
  • the second backup member 340a may have a ring shape. An inner circumferential surface of the second backup member 340a may be in close contact with an outer circumferential surface of the injection pipe 312 . Also, the second sealing member 330a may be disposed outside the storage body 311 compared to the second backup member 340a. When the fluid flows out between the inner surface of the coupling groove 322 and the outer circumferential surface of the injection tube 312, pressure is generated from the outside of the storage body 311 to the storage body 311, so that the second backup member 340a functions effectively. For this purpose, it is preferable to be disposed on the inner side of the storage body 311 compared to the second sealing member 330a. Also, the second backup member 340a may have a square cross section. For example, the second backup member 340a may be made of polyether ether ketone (PEEK) material.
  • PEEK polyether ether ketone
  • FIG. 9 is a cross-sectional view showing a high-pressure storage vessel according to another modified example of the third embodiment of the present invention.
  • the high-pressure storage container in the high-pressure storage container according to another modified example of the third embodiment of the present invention, there is a second gap between the inner surface of the coupling groove 322 formed in the boss body 321 and the outer end surface of the injection pipe 312.
  • a sealing member 330a is disposed.
  • the second sealing member 330a is disposed in a pressurized state between the outer end surface of the injection tube 312 and the inner surface of the coupling groove 322, supplementing the sealing function of the first sealing member 330 and providing additional sealing force. can provide.
  • a groove may be formed on at least one of an inner surface of the coupling groove 322 and an outer end of the injection pipe 312 for disposition of the second sealing member 330a.
  • the high-pressure storage container according to the third embodiment of the present invention may have tapered portions on the liner 310 and the boss 320, respectively, , When the liner 310 and the boss 320 are fastened, an engagement force between the tapered portions may be provided. In addition, an adhesive may be disposed between the liner 310 and the boss 320 to provide additional bonding force. Meanwhile, in relation to the third embodiment of the present invention, a structure in which the boss 320 is fitted to the liner 310 has been suggested, but screw coupling between the boss 320 and the liner 310 is performed on the premise of forming a screw thread. may be
  • FIG. 10 is a flowchart of a method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention.
  • the method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention is for manufacturing a high-pressure storage vessel according to embodiments of the present invention as described above.
  • the method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention may include integrally molding a liner (S10) and assembling and combining the liner 10 and a boss (S20). there is.
  • the liner may be molded using a blow molding method. That is, the liner may be integrally molded through a blow molding method.
  • the high-pressure storage container provides an engaging force between tapered parts, an engaging force between concave-convex parts, a fastening force and airtightness by a sealing member, through which the liner It secures strong bonding and confidentiality between the boss and the boss. Therefore, according to the present invention, it is not necessary to insert-inject the boss into the liner to secure the bonding force between the liner and the boss, and the liner can be integrally molded through a blow molding method.
  • the liner is integrally molded by the blow molding method, since the entire liner is formed as a single body, hydrogen tightness and quality stability can be improved. In addition, productivity improvement can be expected as the process of heat-sealing the two bodies is eliminated.
  • step S20 of assembling and coupling the liner and the boss the boss is assembled and fastened to the liner. Since the assembly and fastening structure of the boss and the liner has been described in relation to the high-pressure storage vessel according to the embodiments of the present invention, a detailed description thereof will be omitted. When fastening the liner and the boss, disposition of the first sealing member, application of the first adhesive, etc. may be performed together.
  • a step of coupling a shell providing pressure resistance to an outer circumferential surface of the liner may be performed.

Abstract

A high-pressure storage container and a method for manufacturing same are disclosed. A high-pressure storage container according to an embodiment of the present invention may comprise: a liner which comprises a storage body having a storage space formed therein so as to store high-pressure fluid, and an injection pipe extending outward from one side of the storage body while making the storage space communicate with the outside; and a boss which comprises a tubular boss body perforated in the longitudinal direction, and a coupling groove formed to be recessed from one end of the boss body one to the other side in the longitudinal direction so that the boss body can be coupled to the injection pipe while making the storage space communicate with the outside, the injection pipe being coupled to the coupling groove.

Description

고압 저장 용기 및 그 제조 방법High-pressure storage vessel and manufacturing method thereof
본 발명은 고압 저장 용기 및 그 제조 방법에 관한 것으로, 더욱 상세하게는 수소 등의 유체를 운송 또는 보관하기 위한 고압 저장 용기 및 그 제조 방법에 관한 것이다.The present invention relates to a high-pressure storage vessel and a method for manufacturing the same, and more particularly, to a high-pressure storage vessel for transporting or storing a fluid such as hydrogen and a method for manufacturing the same.
고압 저장 용기는 일반적으로 내부에 수소, 천연 가스, 산소 등의 가압 유체를 저장하기 위해 사용된다. 고압 저장 용기(고압 탱크)는 사용 재료 등에 따라 크게 4가지 타입으로 분류될 수 있다. 이 가운데, 수지 재질의 라이너에 토우 프리프레그와 같은 복합 소재를 와인딩하여 만들어지는 타입-4의 고압 저장 용기는 가벼우면서도 성능이 우수하여 수소 자동차의 연료 탱크로 채택되고 있다.High-pressure storage vessels are generally used to store pressurized fluids such as hydrogen, natural gas, and oxygen therein. High-pressure storage containers (high-pressure tanks) can be largely classified into four types according to materials used. Among them, the type-4 high-pressure storage container made by winding a composite material such as tow prepreg on a resin liner is lightweight and has excellent performance, so it is adopted as a fuel tank for hydrogen vehicles.
고압 저장 용기에서 주입관을 형성하는 보스는 유체의 주입 시 외부의 밸브와 결합된다. 일반적으로 밸브는 금속 재질로 이루어지므로, 보스와 외부의 밸브 사이의 견고한 결합을 위해 보스 역시 대부분 금속 재질로 이루어진다. 그런데 타입-4의 고압 저장 용기의 경우 수지 재질의 라이너가 적용되므로, 금속 재질의 보스와 이종 재질(수지 재질)의 라이너 사이의 접합력 확보가 중요한 과제이다.A boss forming an injection pipe in a high-pressure storage container is coupled with an external valve when fluid is injected. In general, since a valve is made of a metal material, most of the bosses are also made of a metal material for a solid coupling between the boss and the external valve. However, since a resin liner is applied to the type-4 high-pressure storage container, securing bonding strength between the metal boss and the liner of a different material (resin material) is an important task.
이종 재질 사이의 접합면은 박리에 대한 저항성이 악하며, 이에 따라 고압 저장 용기의 기밀성 및 내구성 등이 저하될 수 있기 때문이다. 특히, 고압 저장 용기가 수소차의 수소 연료의 저장을 위해 사용될 경우 고압(350bar 이상) 수소의 충전 및 방전이 반복되므로 라이너와 보스 사이의 박리가 발생할 가능성이 높다.This is because the bonding surface between different materials has poor resistance to peeling, and thus airtightness and durability of the high-pressure storage container may be deteriorated. In particular, when the high-pressure storage container is used to store hydrogen fuel of a hydrogen vehicle, since charging and discharging of high-pressure (350 bar or more) hydrogen is repeated, separation between the liner and the boss is likely to occur.
한편, 종래 타입-4의 고압 저장 용기는 사출 성형을 통해 제조되었다. 이때, 저장 공간을 형성하는 라이너는 일반적으로 2개의 바디(body)로 나누어 사출된 후 서로 열융착된다. 이로 인하여 2개의 라이너 바디를 사출하는 과정에서 생산 속도가 저하되고, 2개 바디 사이의 열융착 면적이 넓어 융착 강도 편차가 발생하는 것이 문제로 지적되고 있다.On the other hand, conventional type-4 high-pressure storage containers are manufactured through injection molding. At this time, the liner forming the storage space is generally divided into two bodies, injected, and then heat-sealed to each other. Due to this, it has been pointed out as a problem that the production speed is lowered in the process of injecting the two liner bodies, and that the heat welding area between the two bodies is wide and the welding strength deviation occurs.
(선행문헌) 한국 공개특허 제10-2021-0037456호(Prior literature) Korean Patent Publication No. 10-2021-0037456
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 금속 재질의 보스와 수지 재질의 라이너 사이의 접합력이 향상된 구조를 가지는 고압 저장 용기 및 제조 방법을 제공하는 것이다.The present invention is to solve the above problems, and an object of the present invention is to provide a high-pressure storage container and manufacturing method having a structure in which bonding strength between a boss made of metal and a liner made of resin is improved.
본 발명의 다른 목적은 저장 공간을 형성하는 라이너를 2개로 분리하여 성형하지 않고 한번에 일체로 성형할 수 있어 제조 효율 및 성능이 우수한 고압 저장 용기 및 그 제조 방법을 제공하는 것이다.Another object of the present invention is to provide a high-pressure storage container with excellent manufacturing efficiency and performance, and a method for manufacturing the same, since the liner forming the storage space can be integrally molded at once without being separated and molded into two.
본 발명의 과제들은 위에 언급한 과제들로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 본 발명이 속하는 기술분야의 통상의 기술자에게 명확하게 이해될 수 있을 것이다.The tasks of the present invention are not limited to the above-mentioned tasks, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.
본 발명의 일 측면에 따르면, 고압 유체의 저장을 위한 저장 공간이 내부에 형성된 저장 몸체와, 상기 저장 공간을 외부와 연통시키며 상기 저장 몸체의 일측에서 외측으로 연장된 주입관을 구비하는 라이너; 및 길이 방향을 따라 관통된 관형의 보스 몸체와, 상기 보스 몸체가 상기 저장 공간을 외부와 연통시키며 상기 주입관에 결합될 수 있도록 상기 보스 몸체의 길이 방향 일측 단부에서 타측으로 함입되어 형성되고 상기 주입관이 결합되는 결합홈을 구비하는 보스;를 포함하는 고압 저장 용기가 제공된다.According to one aspect of the present invention, a liner having a storage body having a storage space for storing high-pressure fluid formed therein, and an injection pipe extending outwardly from one side of the storage body while communicating the storage space with the outside; and a tubular boss body penetrating along the longitudinal direction, and the boss body is formed by indenting from one end of the longitudinal direction of the boss body to the other side so that the boss body communicates the storage space with the outside and is coupled to the injection pipe. A high-pressure storage vessel including a boss having a coupling groove to which a tube is coupled is provided.
이때, 상기 주입관의 내주면에는 상기 외측에서 상기 저장 몸체 측으로 갈수록 상기 주입관의 내경을 감소시키는 제 1 테이퍼 형상부가 구비되고, 상기 보스는 상기 결합홈의 내면 중 주입관의 내주면과 맞닿는 면에 상기 제 1 테이퍼 형상부에 상응하는 제 2 테이퍼 형상부를 구비할 수 있다.At this time, the inner circumferential surface of the injection pipe is provided with a first tapered portion that decreases the inner diameter of the injection pipe from the outside toward the storage body, and the boss is provided on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe. A second tapered portion corresponding to the first tapered portion may be provided.
또한, 상기 주입관의 외주면의 적어도 일부분에는 길이 방향을 따라 요철이 반복되는 제 1 요철부가 구비되고, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 상기 제 1 요철부와 맞물리는 제 2 요철부를 구비할 수 있다.In addition, at least a portion of the outer circumferential surface of the injection pipe is provided with a first concave-convex portion in which irregularities are repeated along the length direction, and the boss is provided with the first concave-convex portion on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe. A second concavo-convex portion that engages may be provided.
또한, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 내주면과 맞닿는 면에 반경 방향 내측으로 함입된 제 1 그루브를 구비하고, 상기 고압 저장 용기는 상기 제 1 그루브에 안착되고 외주면이 상기 주입관의 내주면에 접촉하는 링형의 제 1 씰링부재를 더 포함할 수 있다.In addition, the boss has a first groove recessed inward in a radial direction on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe, and the high-pressure storage container is seated in the first groove and the outer circumferential surface of the injection pipe It may further include a ring-shaped first sealing member in contact with the inner circumferential surface of the.
또한, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입된 제 2 그루브를 구비하고, 상기 고압 저장 용기는 상기 제 2 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 2 씰링부재를 더 포함할 수 있다.In addition, the boss has a second groove recessed outward in a radial direction on a surface of the inner surface of the coupling groove that contacts the outer circumferential surface of the injection pipe, and the high-pressure storage container is seated in the second groove and the inner circumferential surface of the injection pipe It may further include a ring-shaped second sealing member in contact with the outer circumferential surface of the.
또한, 상기 제 1 씰링부재 및 제 2 씰링부재 중 어느 하나는 상기 주입관과 접하는 면에 반경 방향 외측 또는 내측으로 함입된 함입부를 구비하고 상기 함입부의 상측 및 하측 부분이 상기 주입관의 외주면 또는 상기 주입관의 내주면에 면접촉할 수 있다.In addition, any one of the first sealing member and the second sealing member has a recessed portion recessed radially outward or inward on a surface in contact with the injection pipe, and upper and lower portions of the recessed portion are the outer circumferential surface of the injection pipe or the It can make surface contact with the inner circumferential surface of the injection tube.
또한, 상기 제 1 씰링부재 및 제 2 씰링부재 중 나머지 하나는 상기 주입관을 사이에 두고 상기 함입부와 마주보는 위치에서 상기 주입관의 내주면 또는 상기 주입관의 외주면에 접촉할 수 있다.In addition, the other one of the first sealing member and the second sealing member may contact the inner circumferential surface of the injection pipe or the outer circumferential surface of the injection pipe at a position facing the recessed portion with the injection pipe interposed therebetween.
또한, 상기 저장 몸체는 상기 주입관의 둘레에 링형으로 형성된 안착부를 구비하고, 상기 보스 몸체의 길이 방향 일측 단부 중 상기 결합홈으로부터 반경 방향 외측 부분은 상기 안착부에 안착될 수 있다.In addition, the storage body may include a seating portion formed in a ring shape around the injection pipe, and a radially outer portion of one end of the boss body in a longitudinal direction from the coupling groove may be seated on the seating portion.
또한, 상기 보스는 상기 보스 몸체의 상기 안착부와 접하는 면에 원형으로 함입된 제 3 그루브를 구비하고, 상기 고압 저장 용기는 상기 제 3 그루브에 도포되어 상기 보스와 상기 안착부 사이에 접합력을 제공하는 제 1 접착제를 더 포함할 수 있다.In addition, the boss has a third groove circularly recessed in a surface of the boss body in contact with the seating portion, and the high-pressure storage container is applied to the third groove to provide bonding force between the boss and the seating portion. It may further include a first adhesive that does.
또한, 상기 고압 저장 용기는 상기 주입관의 외주면과 상기 안착부에 도포된 제 2 접착제를 더 포함할 수 있다.In addition, the high-pressure storage container may further include a second adhesive applied to an outer circumferential surface of the injection tube and the seating portion.
또한, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입되되 상기 보스 몸체의 길이 방향 일측 단부 측으로 트여진 제 1 그루브를 구비하고, 상기 고압 저장 용기는 상기 제 1 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 1 씰링부재; 및 상기 제 1 씰링부재와 상기 라이너 사이의 간극을 메꾸며 배치되는 보강 링;을 더 포함할 수 있다.In addition, the boss is recessed radially outward on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe and has a first groove opened toward one end side in the longitudinal direction of the boss body, and the high-pressure storage container is a ring-shaped first sealing member seated in the first groove and having an inner circumferential surface in contact with an outer circumferential surface of the injection pipe; and a reinforcing ring disposed to fill a gap between the first sealing member and the liner.
또한, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 내주면과 맞닿는 면에 반경 방향 내측으로 함입된 제 1 그루브를 구비하고, 상기 고압 저장 용기는 상기 제 1 그루브에 안착되고 외주면이 상기 주입관의 내주면에 접촉하는 링형의 제 1 씰링부재; 및 상기 제 1 씰링부재가 상기 결합홈의 내면과 상기 주입관의 내주면 사이로 끼어들어가는 것을 방지하도록 상기 제 1 그루브에 상기 제 1 씰링부재와 함께 안착되는 링형의 제 1 백업부재;를 더 포함할 수 있다.In addition, the boss has a first groove recessed inward in a radial direction on a surface of the inner surface of the coupling groove that contacts the inner circumferential surface of the injection pipe, and the high-pressure storage container is seated in the first groove and the outer circumferential surface of the injection pipe A ring-shaped first sealing member in contact with the inner circumferential surface of the; and a ring-shaped first backup member seated together with the first sealing member in the first groove to prevent the first sealing member from being inserted between the inner surface of the coupling groove and the inner circumferential surface of the injection tube. there is.
또한, 상기 제 1 백업부재는 상기 제 1 씰링부재에 비하여 상기 저장 몸체에 대해 외측에 배치될 수 있다.Also, the first backup member may be disposed outside the storage body compared to the first sealing member.
또한, 상기 제 1 백업부재는 사각의 단면을 가질 수 있다.In addition, the first backup member may have a square cross section.
또한, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입된 제 2 그루브를 더 구비하고, 상기 고압 저장 용기는 상기 제 2 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 2 씰링부재; 및 상기 제 2 씰링부재가 상기 결합홈의 내면과 상기 주입관의 외주면 사이로 끼어들어가는 것을 방지하도록 상기 제 2 그루브에 상기 제 2 씰링부재와 함께 안착되는 링형의 제 2 백업부재;를 더 포함할 수 있다.In addition, the boss further includes a second groove recessed outward in a radial direction on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe, and the high-pressure storage container is seated in the second groove and the inner circumferential surface is the injection tube. A ring-shaped second sealing member in contact with the outer circumferential surface of the tube; and a ring-shaped second backup member seated together with the second sealing member in the second groove to prevent the second sealing member from being inserted between the inner surface of the coupling groove and the outer circumferential surface of the injection pipe. there is.
또한, 상기 제 2 씰링부재는 상기 제 2 백업부재에 비하여 상기 저장 몸체에 대해 외측에 배치될 수 있다.Also, the second sealing member may be disposed outside the storage body compared to the second backup member.
또한, 상기 제 2 씰링부재는 사각의 단면을 가질 수 있다.In addition, the second sealing member may have a square cross section.
또한, 상기 고압 저장 용기는 상기 결합홈의 내면과 상기 주입관의 외측 단부면 사이에 배치되는 제 2 씰링부재를 더 포함할 수 있다.In addition, the high-pressure storage container may further include a second sealing member disposed between an inner surface of the coupling groove and an outer end surface of the injection tube.
한편, 본 발명의 다른 일 측면에 따르면, 상기 고압 저장 용기를 제조하는 방법으로서, 블로우 몰딩 방식으로 상기 라이너를 일체로 성형하는 단계; 및 상기 라이너와 상기 보스를 조립하여 결합시키는 단계;를 포함하는 고압 저장 용기 제조 방법이 제공된다.Meanwhile, according to another aspect of the present invention, as a method of manufacturing the high-pressure storage container, integrally molding the liner by a blow molding method; and assembling and combining the liner and the boss.
상기의 구성에 따라, 본 발명에 따른 고압 저장 용기 및 그 제조 방법은 라이너의 주입관와 보스의 끼움 결합 구조를 통해 라이너와 보스 사이의 접합력을 향상시켜 준다.According to the above configuration, the high-pressure storage container and method of manufacturing the same according to the present invention improve the bonding force between the liner and the boss through the fitting structure of the liner injection pipe and the boss.
본 발명에 따른 고압 저장 용기 및 그 제조 방법은 블로우 몰딩 공법을 통해 라이너를 일체로 성형한 뒤 보스와 조립시킬 수 있게 해주며, 이를 통해 고압 저장 용기의 생산성이 증대될 수 있다.The high-pressure storage vessel and method for manufacturing the same according to the present invention enable a liner to be integrally molded through a blow molding method and then assembled with a boss, through which the productivity of the high-pressure storage vessel can be increased.
본 발명의 효과는 상기한 효과로 한정되는 것은 아니며, 본 발명의 상세한 설명 또는 청구범위에 기재된 발명의 구성으로부터 추론 가능한 모든 효과를 포함하는 것으로 이해되어야 한다.The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the configuration of the invention described in the claims.
도 1은 본 발명의 제 1 실시예에 따른 고압 저장 용기의 구성을 나타낸 단면도이다.1 is a cross-sectional view showing the configuration of a high-pressure storage vessel according to a first embodiment of the present invention.
도 2는 본 발명의 제 1 실시예에 따른 고압 저장 용기의 라이너와 보스의 분리 상태를 나타낸 도면이다.2 is a view showing a state in which the liner and the boss of the high-pressure storage container are separated from each other according to the first embodiment of the present invention.
도 3은 본 발명의 제 1 실시예에 따른 고압 저장 용기의 라이너와 보스의 결합 상태를 나타낸 도면이다.3 is a view showing a coupled state between the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention.
도 4는 도 3의 A 부분의 확대도이다.4 is an enlarged view of part A of FIG. 3 .
도 5는 본 발명의 제 1 실시예에 따른 고압 저장 용기의 제 2 씰링부재의 사시도이다.5 is a perspective view of the second sealing member of the high-pressure storage vessel according to the first embodiment of the present invention.
도 6은 본 발명의 제 2 실시예에 따른 고압 저장 용기를 나타낸 단면도이다.6 is a cross-sectional view showing a high-pressure storage vessel according to a second embodiment of the present invention.
도 7은 본 발명의 제 3 실시예에 따른 고압 저장 용기를 나타낸 단면도이다.7 is a cross-sectional view showing a high-pressure storage vessel according to a third embodiment of the present invention.
도 8은 본 발명의 제 3 실시예의 변형예에 따른 고압 저장 용기를 나타낸 단면도이다.8 is a cross-sectional view showing a high-pressure storage vessel according to a modified example of the third embodiment of the present invention.
도 9는 본 발명의 제 3 실시예의 다른 변형예에 따른 고압 저장 용기를 나타낸 단면도이다.9 is a cross-sectional view showing a high-pressure storage vessel according to another modified example of the third embodiment of the present invention.
도 10은 본 발명의 일 실시예에 따른 고압 저장 용기 제조 방법의 순서도이다.10 is a flowchart of a method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention.
이하, 첨부한 도면을 참고로 하여 본 발명의 실시예들에 대하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예들에 한정되지 않는다. 본 발명을 명확하게 설명하기 위해서 도면에서 설명과 관계없는 부분은 생략하였다.Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. This invention may be embodied in many different forms and is not limited to the embodiments set forth herein. In order to clearly explain the present invention, parts irrelevant to the description are omitted in the drawings.
본 명세서 및 청구범위에 사용된 단어와 용어는 통상적이거나 사전적인 의미로 한정 해석되지 않고, 자신의 발명을 최선의 방법으로 설명하기 위해 발명자가 용어와 개념을 정의할 수 있는 원칙에 따라 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야 한다.Words and terms used in this specification and claims are not construed as limited in their ordinary or dictionary meanings, but in accordance with the principle that the inventors can define terms and concepts in order to best describe their inventions. It should be interpreted as a meaning and concept that corresponds to the technical idea.
본 명세서에서, "포함하다" 또는 "가지다" 등의 용어는 명세서상에 기재된 특징, 숫자, 단계, 동작, 구성 요소, 부품 또는 이들을 조합한 것이 존재함을 설명하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성 요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다. 또한, 어떤 구성 요소가 다른 구성 요소와 "연결"되어 있다는 것은 특별한 사정이 없는 한 서로 직접 연결되는 것뿐만 아니라 간접적으로 연결되는 경우도 포함한다.In this specification, terms such as "include" or "have" are intended to describe the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded. In addition, that a component is “connected” to another component includes cases where they are not only directly connected to each other but also indirectly connected to each other unless there are special circumstances.
도 1은 본 발명의 제 1 실시예에 따른 고압 저장 용기의 구성을 나타낸 단면도이다. 또한, 도 2는 본 발명의 제 1 실시예에 따른 고압 저장 용기의 라이너와 보스의 분리 상태를 나타내고, 도 3은 본 발명의 제 1 실시예에 따른 고압 저장 용기의 라이너와 보스의 결합 상태를 나타낸다.1 is a cross-sectional view showing the configuration of a high-pressure storage vessel according to a first embodiment of the present invention. 2 shows a separated state of the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention, and FIG. 3 shows the coupled state of the liner and the boss of the high-pressure storage container according to the first embodiment of the present invention. indicate
본 발명의 제 1 실시예에 따른 고압 저장 용기는 내부에 수소 등의 유체를 고압 상태로 저장하기 위해 사용될 수 있다. 예를 들면, 본 발명의 제 1 실시예에 따른 고압 저장 용기는 수지 재질의 라이너에 복합 소재를 와인딩하여 만들어지는 타입-4의 고압 탱크가 될 수 있다.The high-pressure storage vessel according to the first embodiment of the present invention may be used to store a fluid such as hydrogen in a high-pressure state therein. For example, the high-pressure storage vessel according to the first embodiment of the present invention may be a type-4 high-pressure tank made by winding a composite material around a resin liner.
도 1 내지 도 3을 참조하면, 본 발명의 제 1 실시예에 따른 고압 저장 용기는 라이너(110), 보스(120), 제 1 씰링부재(130) 및 제 2 씰링부재(140)를 포함할 수 있다.1 to 3, the high pressure storage vessel according to the first embodiment of the present invention may include a liner 110, a boss 120, a first sealing member 130 and a second sealing member 140. can
라이너(110)는 고압 유체가 저장되는 저장 공간(S)을 제공한다. 라이너(110)는 수지 재질로 이루어질 수 있다. 더욱 상세하게, 라이너(110)는 폴리머 소재로 이루어질 수 있다. 예를 들면, 라이너(110)는 고밀도 플라스틱 소재(HDPE)로 이루어질 수 있다.The liner 110 provides a storage space (S) in which high-pressure fluid is stored. The liner 110 may be made of a resin material. More specifically, the liner 110 may be made of a polymer material. For example, the liner 110 may be made of high density plastic material (HDPE).
본 발명의 제 1 실시예에서, 라이너(110)는 저장 몸체(111) 및 주입관(112)을 구비할 수 있다. 이때, 저장 몸체(111)와 주입관(112)은 일체로 성형될 수 있다. 예를 들어, 저장 몸체(111)와 주입관(112)은 블로우 몰딩 방식으로 성형될 수 있다.In the first embodiment of the present invention, the liner 110 may include a storage body 111 and an injection tube 112. At this time, the storage body 111 and the injection tube 112 may be integrally molded. For example, the storage body 111 and the injection tube 112 may be formed by blow molding.
저장 몸체(111)는 고압 유체의 저장을 위한 저장 공간(S)을 내부에 구비한다. 이때, 고압 유체는 수소가 될 수 있다. 저장 몸체(111)는 원통형으로 형성될 수 있다. 저장 몸체(111)는 주입관(112)과의 연결부를 제외하고는 밀폐된 형태를 가질 수 있다.The storage body 111 has a storage space (S) for storing high-pressure fluid therein. At this time, the high-pressure fluid may be hydrogen. The storage body 111 may be formed in a cylindrical shape. The storage body 111 may have a sealed shape except for a connection portion with the injection pipe 112 .
본 발명의 제 1 실시예에서, 저장 몸체(111)는 주입관(112)의 둘레에 링형으로 형성된 안착부(111a)를 구비할 수 있다. 안착부(111a)는 보스(120)의 보스 몸체(121)의 길이 방향 일측 단부면 중 결합홈(122)을 기준으로 반경 방향 외측 부분과 접촉할 수 있다. 또한, 안착부(111a)에는 외측으로 돌출된 돌출부(111b)가 하나 이상 구비될 수 있다. 예를 들어, 돌출부(111b)는 복수개가 소정 간격 이격되어 구비될 수 있다. 돌출부(111b)는 후술되는 보스(120)의 고정홈(128)에 삽입되어 보스(120)가 라이너(110)와 결합된 상태에서 회전하는 것을 방지한다.In the first embodiment of the present invention, the storage body 111 may have a seating portion 111a formed in a ring shape around the injection pipe 112 . The seat portion 111a may contact an outer portion in the radial direction based on the coupling groove 122 of one end surface of the boss body 121 of the boss 120 in the longitudinal direction. In addition, one or more protrusions 111b protruding outward may be provided in the seating portion 111a. For example, a plurality of protrusions 111b may be provided at a predetermined interval. The protrusion 111b is inserted into the fixing groove 128 of the boss 120 to be described later to prevent the boss 120 from rotating while being coupled with the liner 110 .
주입관(112)은 저장 공간(S)을 외부와 연통시키며 저장 몸체(111)의 일측에서 외측으로 연장되어 구비된다. 더욱 상세하게, 주입관(112)은 원통 형상을 가질 수 있다. 본 발명의 제 1 실시예에서, 주입관(112)은 저장 몸체(111)와 일체로 형성될 수 있으며, 주입관(112)을 통해 저장 몸체(111)의 저장 공간(S)이 외부와 연통될 수 있다.The injection pipe 112 communicates the storage space S with the outside and extends from one side of the storage body 111 to the outside. More specifically, the injection tube 112 may have a cylindrical shape. In the first embodiment of the present invention, the injection pipe 112 may be formed integrally with the storage body 111, and the storage space (S) of the storage body 111 communicates with the outside through the injection pipe 112 It can be.
주입관(112)의 내주면에는 상기 외측에서 저장 몸체(111) 측으로 갈수록 주입관(112)의 내경을 감소시키는 제 1 테이퍼 형상부(113)가 구비될 수 있다. 이때, 제 1 테이퍼 형상부(113)는 주입관(112)의 내주면 전체에 걸쳐 형성될 수 있다. 주입관(112)은 후술되는 보스(120)의 결합홈(122)에 끼움 결합되는데, 보스(120)는 결합홈(122)의 내면 중 주입관(112)의 내주면과 맞닿는 면에 제 1 테이퍼 형상부(113)에 상응하는 제 2 테이퍼 형상부(123)를 구비할 수 있다. 제 1 테이퍼 형상부(113)와 제 2 테이퍼 형상부(123)는 서로 맞물리며 강한 체결력을 제공할 수 있다.A first tapered portion 113 may be provided on the inner circumferential surface of the injection pipe 112 to decrease the inner diameter of the injection pipe 112 toward the storage body 111 from the outside. At this time, the first taper-shaped portion 113 may be formed over the entire inner circumferential surface of the injection pipe 112 . The injection pipe 112 is fitted into the coupling groove 122 of the boss 120 to be described later, and the boss 120 has a first taper on the inner surface of the coupling groove 122 in contact with the inner circumferential surface of the injection pipe 112. A second tapered portion 123 corresponding to the shaped portion 113 may be provided. The first tapered portion 113 and the second tapered portion 123 may be engaged with each other and provide strong fastening force.
주입관(112)의 외주면의 적어도 일부분에는 길이 방향을 따라 요철이 반복되는 제 1 요철부(114)가 구비될 수 있다. 이와 관련하여 보스(120)는 결합홈(122)의 내면 중 주입관(112)의 외주면과 맞닿는 면에 제 1 요철부(114)와 맞물리는 제 2 요철부(124)를 구비할 수 있다. 제 1 요철부(114)와 제 2 요철부(124)는 서로 맞물리며 추가적인 체결력을 제공할 수 있다.At least a portion of the outer circumferential surface of the injection tube 112 may be provided with a first uneven portion 114 having repeated irregularities along the longitudinal direction. In this regard, the boss 120 may include a second concave-convex portion 124 engaged with the first concave-convex portion 114 on an inner surface of the coupling groove 122 that contacts the outer circumferential surface of the injection pipe 112 . The first concave-convex portion 114 and the second concave-convex portion 124 may be engaged with each other to provide additional fastening force.
보스(120)는 고압 저장 용기 내로 유체를 주입하기 위한 밸브가 결합되는 부분이다. 보스(120)는 금속 재질로 이루어질 수 있다. 예를 들면, 보스(120)는 알루미늄 재질로 이루어질 수 있다.The boss 120 is a part to which a valve for injecting fluid into the high-pressure storage container is coupled. The boss 120 may be made of a metal material. For example, the boss 120 may be made of aluminum.
보스(120)는 보스 몸체(121), 결합홈(122), 제 2 테이퍼 형상부(123), 제 2 요철부(124), 제 1 그루브(125), 제 2 그루브(126), 제 3 그루브(127), 고정홈(128) 및 나사산(129)을 구비할 수 있다.The boss 120 includes a boss body 121, a coupling groove 122, a second tapered portion 123, a second concave-convex portion 124, a first groove 125, a second groove 126, a third A groove 127, a fixing groove 128 and a screw thread 129 may be provided.
보스 몸체(121)는 길이 방향을 따라 관통된 관형의 부재이다. 보스 몸체(121)는 저장 공간(S)을 외부와 연통시키며 주입관(112)에 결합된다. 더욱 상세하게, 보스 몸체(121)는 주입관(112)의 내주면, 외측 단부면 및 외주면, 저장 몸체(111)의 안착부(111a)와 접하며 배치될 수 있다. 보스(120)가 주입관(112)에 결합된 상태에서 보스 몸체(121)의 길이 방향을 따라 형성된 관통부가 저장 공간(S)을 외부와 연통시키는 통로가 될 수 있다.The boss body 121 is a tubular member penetrated along the longitudinal direction. The boss body 121 communicates the storage space S with the outside and is coupled to the injection pipe 112. More specifically, the boss body 121 may be disposed in contact with the inner circumferential surface, the outer end surface and the outer circumferential surface of the injection pipe 112 and the seating portion 111a of the storage body 111 . In a state where the boss 120 is coupled to the injection tube 112, the through portion formed along the longitudinal direction of the boss body 121 may serve as a passage through which the storage space S communicates with the outside.
보스 몸체(121)의 길이 방향 일측 단부 중 결합홈(122)의 반경 방향 외측 부분은 저장 몸체(111)의 안착부(111a)에 안착될 수 있다. 이때, 보스 몸체(121)의 길이 방향 일측 단부(121a)는 반경 방향 외측으로 돌출되어 플랜지 형상을 가질 수 있으며, 플랜지 형상을 이루는 보스 몸체(121)의 길이 방향 일측 단부(121a)의 단부면과 측면은 안착부(111a)에 접하며 배치될 수 있다.A radially outer portion of the coupling groove 122 of one end of the boss body 121 in the longitudinal direction may be seated on the seating portion 111a of the storage body 111 . At this time, one end 121a in the longitudinal direction of the boss body 121 may protrude outward in the radial direction to have a flange shape, and the end surface of the end 121a in the longitudinal direction of the boss body 121 constituting the flange shape The side surface may be disposed in contact with the seating portion 111a.
또한, 보스 몸체(121) 중 주입관(112)의 내주면과 접하는 부분은 보스(120)의 길이 방향 일단 측으로 추가적으로 돌출될 수 있다. 주입관(112)과 저장 몸체(111)가 만나는 부분에서 주입관(112)의 내주면 측이 외주면 측에 비해 저장 몸체(111)의 두께만큼 길이가 더 길게 형성된다. 그런데, 보스 몸체(121) 중 주입관(112)의 내주면과 접하는 부분이 보스(120)의 길이 방향 일단 측으로 추가적으로 돌출됨으로써 주입관(112)의 내주면을 보스 몸체(121)가 전체적으로 지지할 수 있게 되며, 구조적 안정성이 향상될 수 있다.In addition, a portion of the boss body 121 in contact with the inner circumferential surface of the injection tube 112 may additionally protrude toward one end of the boss 120 in the longitudinal direction. At a portion where the injection pipe 112 and the storage body 111 meet, the inner circumferential side of the injection pipe 112 is longer than the outer circumferential side by the thickness of the storage body 111. However, a portion of the boss body 121 in contact with the inner circumferential surface of the injection pipe 112 additionally protrudes toward one end of the boss 120 in the longitudinal direction so that the inner circumferential surface of the injection pipe 112 can be supported by the boss body 121 as a whole. and structural stability can be improved.
결합홈(122)은 보스 몸체(121)가 저장 공간(S)을 외부와 연통시키며 주입관(112)에 결합될 수 있도록 보스 몸체(121)의 길이 방향 일측 단부에서 타측으로 함입되어 형성된다. 결합홈(122)은 주입관(112)이 끼움 결합되도록 형성될 수 있다.The coupling groove 122 is formed by being recessed from one end of the longitudinal direction of the boss body 121 to the other side so that the boss body 121 communicates the storage space S with the outside and is coupled to the injection pipe 112. Coupling groove 122 may be formed so that the injection tube 112 is fitted.
제 2 테이퍼 형상부(123)는 결합홈(122)의 내면 중 주입관(112)의 내주면과 맞닿는 면에 형성된다. 제 2 테이퍼 형상부(123)는 제 1 테이퍼 형상부(113)에 상응하는 형상으로 구비된다. 전술한 바와 같이, 제 1 테이퍼 형상부(113)는 외측에서 저장 몸체(111) 측으로 갈수록 주입관(112)의 내경을 감소시키도록 구비되는데, 제 2 테이퍼 형상부(123)가 제 1 테이퍼 형상부(113)와 맞물리며 강한 체결력을 제공할 수 있다.The second tapered portion 123 is formed on a surface of the inner surface of the coupling groove 122 that comes into contact with the inner circumferential surface of the injection tube 112 . The second tapered portion 123 is provided in a shape corresponding to the first tapered portion 113 . As described above, the first taper-shaped portion 113 is provided to decrease the inner diameter of the injection tube 112 toward the storage body 111 from the outside, and the second taper-shaped portion 123 has the first taper shape It is engaged with the part 113 and can provide a strong fastening force.
제 2 요철부(124)는 결합홈(122)의 내면 중 주입관(112)의 외주면과 맞닿는 면에 형성된다. 제 2 요철부(124)는 보스(120)가 라이너(110)에 체결된 상태에서 제 1 요철부(114)와 맞물리도록 구비된다. 제 2 요철부(124)는 제 1 요철부(114)와 맞물리며 추가적인 체결력을 제공할 수 있다. 보스(120)는 금속 재질로 이루어지고 라이너(110)는 수지 재질로 이루어질 때, 제 2 요철부(124)가 상대적으로 높은 강도를 가지므로 보스(120)의 체결 과정에서 제 2 요철부(124)에 의해 제 1 요철부(114)가 뭉개지면서 더욱 강한 체결력이 발생할 수 있다.The second concave-convex portion 124 is formed on a surface of the inner surface of the coupling groove 122 in contact with the outer circumferential surface of the injection pipe 112 . The second concave-convex portion 124 is provided to engage with the first concave-convex portion 114 in a state in which the boss 120 is fastened to the liner 110 . The second concave-convex portion 124 may provide additional fastening force while engaging with the first concave-convex portion 114 . When the boss 120 is made of a metal material and the liner 110 is made of a resin material, the second concave-convex part 124 has relatively high strength, so during the fastening process of the boss 120, the second concave-convex part 124 ), while the first concave-convex portion 114 is crushed, a stronger fastening force may be generated.
제 1 그루브(125)는 결합홈(122)의 내면 중 주입관(112)의 내주면과 맞닿는 면에 반경 방향 내측으로 함입되어 형성된다. 제 1 그루브(125)에는 제 1 씰링부재(130)가 안착될 수 있다. 제 1 그루브(125) 내에 배치된 제 1 씰링부재(130)의 외주면은 주입관(112)의 내주면과 접촉하며 체결력과 기밀성을 제공할 수 있다.The first groove 125 is formed by being recessed inward in the radial direction on a surface of the inner surface of the coupling groove 122 in contact with the inner circumferential surface of the injection pipe 112 . The first sealing member 130 may be seated in the first groove 125 . The outer circumferential surface of the first sealing member 130 disposed in the first groove 125 may contact the inner circumferential surface of the injection pipe 112 and provide fastening force and airtightness.
제 2 그루브(126)는 결합홈(122)의 내면 중 주입관(112)의 외주면과 맞닿는 면에 반경 방향 외측으로 함입되어 형성된다. 제 2 그루브(126)에는 제 2 씰링부재(140)가 안착될 수 있다. 제 2 그루브(126) 내에 배치된 제 2 씰링부재(140)의 내주면은 주입관(112)의 외주면과 접촉하며 체결력과 기밀성을 제공할 수 있다.The second groove 126 is formed by being recessed outward in the radial direction on a surface of the inner surface of the coupling groove 122 in contact with the outer circumferential surface of the injection pipe 112 . The second sealing member 140 may be seated in the second groove 126 . The inner circumferential surface of the second sealing member 140 disposed in the second groove 126 may contact the outer circumferential surface of the injection pipe 112 and provide fastening force and airtightness.
제 1 그루브(125)와 제 2 그루브(126)는 서로 마주보는 위치에 형성될 수 있다. 제 1 그루브(125)와 제 2 그루브(126)가 이와 같이 형성됨으로써 보스(120)가 라이너(110)에 결합된 상태에서 제 1 씰링부재(130) 및 제 2 씰링부재(140)가 주입관(112)을 사이에 두고 마주보는 위치에 배치될 수 있으며 보스(120)와 라이너(110) 사이의 체결력 및 기밀성이 더욱 효과적으로 제공될 수 있다.The first groove 125 and the second groove 126 may be formed at positions facing each other. Since the first groove 125 and the second groove 126 are formed in this way, the first sealing member 130 and the second sealing member 140 are connected to the injection tube in a state where the boss 120 is coupled to the liner 110. It can be disposed at a position facing each other with 112 interposed therebetween, and the fastening force and airtightness between the boss 120 and the liner 110 can be provided more effectively.
제 3 그루브(127)는 보스 몸체(121)의 외면 중 저장 몸체(111)의 안착부(111a)와 접하는 면에 원형으로 함입되어 형성된다. 제 3 그루브(127)에는 보스(120)와 안착부(111a) 사이에 접합력을 제공하는 제 1 접착제(150)가 도포될 수 있다.The third groove 127 is formed by circularly indenting the outer surface of the boss body 121 in contact with the seating portion 111a of the storage body 111 . A first adhesive 150 may be applied to the third groove 127 to provide bonding force between the boss 120 and the mounting portion 111a.
고정홈(128)은 보스 몸체(121) 중 안착부(111a)와 접하는 면에 함입되어 형성된다. 전술한 바와 같이, 안착부(111a)에는 외측으로 돌출된 돌출부(111b) 복수개가 소정 간격 이격되어 구비될 수 있다. 고정홈(128)은 돌출부(111b)에 상응하는 위치에 상응하는 형상을 가지고 복수개 형성될 수 있다. 보스(120)가 라이너(110)와 체결된 상태에서 고정홈(128)에 돌출부(111b)가 삽입되며, 이를 통해 보스(120)가 회전하는 것이 방지될 수 있다. 더욱 상세하게, 보스(120)와 라이너(110)의 체결 후 라이너(110)의 외주면에 내압 성능을 위한 쉘(미도시)을 와인딩할 때 보스(120)가 라이너(110)에 대해 회전하는 것이 방지될 수 있다.The fixing groove 128 is formed by being embedded in a surface of the boss body 121 in contact with the seating portion 111a. As described above, a plurality of outwardly protruding protrusions 111b may be provided in the seating portion 111a at a predetermined interval. The fixing groove 128 may be formed in plurality with a shape corresponding to a position corresponding to the protrusion 111b. In a state in which the boss 120 is fastened to the liner 110, the protrusion 111b is inserted into the fixing groove 128, and through this, rotation of the boss 120 can be prevented. More specifically, when a shell (not shown) for pressure resistance is wound on the outer circumferential surface of the liner 110 after the boss 120 and the liner 110 are fastened, the boss 120 rotates with respect to the liner 110. can be prevented
나사산(129)은 길이 방향을 따라 관통된 보스 몸체(121)의 내주면에 형성된다. 나사산(129)은 외부의 밸브(미도시)와 보스(120)의 체결 시 상기 밸브와 보스(120)의 나사 결합을 위해 제공될 수 있다.The thread 129 is formed on the inner circumferential surface of the boss body 121 penetrating along the longitudinal direction. The screw thread 129 may be provided for screw coupling between the valve and the boss 120 when the external valve (not shown) and the boss 120 are coupled.
제 1 씰링부재(130)는 제 1 그루브(125)에 안착되고 외주면이 주입관(112)의 내주면에 접촉한다. 제 1 씰링부재(130)는 링형상을 가질 수 있다. 예를 들면, 제 1 씰링부재(130)는 오링(O-ring)이 될 수 있다. 도 4를 참조하면, 보스(120)와 라이너(110)가 체결된 상태에서, 제 1 씰링부재(130)는 주입관(112)을 사이에 두고 제 2 씰링부재(140)와 마주보는 위치에서 주입관(112)의 내주면에 접촉할 수 있다.The first sealing member 130 is seated in the first groove 125 and its outer circumferential surface contacts the inner circumferential surface of the injection pipe 112 . The first sealing member 130 may have a ring shape. For example, the first sealing member 130 may be an O-ring. Referring to FIG. 4, in a state in which the boss 120 and the liner 110 are fastened, the first sealing member 130 faces the second sealing member 140 with the injection pipe 112 interposed therebetween. It may contact the inner circumferential surface of the injection tube 112.
제 2 씰링부재(140)는 제 2 그루브(126)에 안착되고 내주면이 주입관(112)의 외주면에 접촉한다. 제 2 씰링부재(140)는 링형상을 가질 수 있다. 도 4 및 도 5를 참조하면, 제 2 씰링부재(140)는 링형상의 씰링 몸체(141)와 씰링 몸체(141)의 내주면 중앙부에서 반경방향 외측으로 함입된 함입부(142)를 구비한다. 함입부(142)를 기준으로 씰링 몸체(141)의 상측 부분(141a)과, 씰링 몸체(141)의 하측 부분(31b)은 주입관(112)의 외주면에 면적촉할 수 있다. 또한, 제 2 씰링부재(140)의 함입부(142)는 주입관(112)을 사이에 두고, 제 1 씰링부재(130)와 마주보는 위치에 배치될 수 있다.The second sealing member 140 is seated in the second groove 126 and its inner circumferential surface contacts the outer circumferential surface of the injection pipe 112 . The second sealing member 140 may have a ring shape. Referring to FIGS. 4 and 5 , the second sealing member 140 includes a ring-shaped sealing body 141 and a recessed portion 142 recessed radially outward from the central portion of the inner circumferential surface of the sealing body 141 . Based on the recessed portion 142, the upper portion 141a of the sealing body 141 and the lower portion 31b of the sealing body 141 may come into contact with the outer circumferential surface of the injection pipe 112. In addition, the recessed portion 142 of the second sealing member 140 may be disposed at a position facing the first sealing member 130 with the injection pipe 112 interposed therebetween.
이와 같이 주입관(112)을 사이에 두고 제 1 씰링부재(130)와 제 2 씰링부재(140)가 마주보는 형태로 배치되어, 함입부(142)를 기준으로 제 2 씰링부재(140)의 상측 부분(141a)과 하측 부분(141b)이 주입관(112)의 외주면에 면접촉하고, 함입부(142)를 마주보는 위치에서 제 1 씰링부재(130)가 주입관(112)의 내주면에 접촉함으로써 보스(120)와 라이너(110) 사이의 기밀성 및 체결력의 확보가 효과적으로 달성될 수 있다.In this way, the first sealing member 130 and the second sealing member 140 are disposed facing each other with the injection pipe 112 interposed therebetween, and the second sealing member 140 with respect to the recessed portion 142 The upper part 141a and the lower part 141b are in surface contact with the outer circumferential surface of the injection pipe 112, and the first sealing member 130 is on the inner circumferential surface of the injection pipe 112 at a position facing the recessed portion 142 By contacting, airtightness and fastening force between the boss 120 and the liner 110 can be effectively achieved.
한편, 본 발명의 제 1 실시예에 따른 고압 저장 용기에서, 접합력의 향상 및 기밀성의 확보를 위해 제 1 접착제(150) 및 제 2 접착제(160)가 도포될 수 있다.Meanwhile, in the high-pressure storage container according to the first embodiment of the present invention, the first adhesive 150 and the second adhesive 160 may be applied to improve adhesion and secure airtightness.
제 1 접착제(150)는 제 3 그루브(127)에 도포되어 보스(120)와 안착부(111a) 사이에 접합력을 제공할 수 있다. 예를 들어, 제 1 접착제(150)는 구조용 접착제가 될 수 있다. 더욱 상세하게, 제 1 접착제(150)는 에폭시계 접착제, 아크릴계 접착제, 우레탄계 접착제 및 시아노아크릴계 접착제 중 어느 하나 이상을 포함할 수 있다.The first adhesive 150 may be applied to the third groove 127 to provide bonding force between the boss 120 and the seating portion 111a. For example, the first adhesive 150 may be a structural adhesive. More specifically, the first adhesive 150 may include any one or more of an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, and a cyanoacryl-based adhesive.
제 2 접착제(160)는 주입관(112)의 외주면과 안착부(111a)에 도포되어 기밀성 및 체결력을 제공할 수 있다. 예를 들어, 제 2 접착제(160)는 보스(120)의 체결 전 주입관(112)의 외주면과 안착부(111a)에 스프레이 형태로 도포된 것일 수 있다. 또한, 제 2 접착제(160)는 에폭시계 접착제, 아크릴계 접착제, 우레탄계 접착제 및 시아노아크릴계 접착제 중 어느 하나 이상을 포함할 수 있다. 이때, 제 2 접착제(160)는 제 1 접착제(150)와 동일한 종류일 수 있다.The second adhesive 160 may be applied to the outer circumferential surface of the injection tube 112 and the seating portion 111a to provide airtightness and fastening force. For example, the second adhesive 160 may be applied in a spray form to the outer circumferential surface of the injection tube 112 and the seating portion 111a before the boss 120 is fastened. In addition, the second adhesive 160 may include any one or more of an epoxy-based adhesive, an acrylic-based adhesive, a urethane-based adhesive, and a cyanoacryl-based adhesive. In this case, the second adhesive 160 may be of the same type as the first adhesive 150 .
이상 살펴본 본 발명의 제 1 실시예에 따른 고압 저장 용기는 제 1 테이퍼 형상부(113)와 제 2 테이퍼 형상부(123) 사이의 맞물리는 힘, 제 1 요철부(114)와 제 2 요철부(124)의 맞물리는 힘, 제 1 씰링부재(130)와 제 2 씰링부재(140)에 의한 체결력 및 기밀성, 제 1 접착제(150) 및 제 2 접착제(160)에 의한 체결력 및 기밀성 등을 제공한다. 이로 인하여 본 발명의 일 실시예에 따른 고압 저장 용기에 의할 경우 라이너(110)와 보스(120) 사이의 강한 결합력 및 기밀성이 확보될 수 있다.In the high-pressure storage container according to the first embodiment of the present invention as described above, the engagement force between the first tapered portion 113 and the second tapered portion 123, the first concave-convex portion 114 and the second concave-convex portion Provides the interlocking force of 124, the fastening force and airtightness by the first sealing member 130 and the second sealing member 140, the fastening force and airtightness by the first adhesive 150 and the second adhesive 160 do. Due to this, in the case of the high-pressure storage container according to an embodiment of the present invention, strong bonding force and airtightness between the liner 110 and the boss 120 can be secured.
본 발명의 제 1 실시예와 관련하여, 보스(120)의 결합홈(122)에 라이너(110)의 주입관(112)이 끼움 결합되는 구조를 설명하였는데, 이는 예시적인 것이다. 보스(120)의 결합홈(122)과 라이너(110)의 주입관(112)에 나사산이 추가적으로 형성될 경우 보스(120)와 라이너(110)의 주입관(112)은 나사 결합 방식으로 체결될 수도 있다.In relation to the first embodiment of the present invention, a structure in which the injection pipe 112 of the liner 110 is fitted into the coupling groove 122 of the boss 120 has been described, but this is exemplary. When a thread is additionally formed in the coupling groove 122 of the boss 120 and the injection pipe 112 of the liner 110, the boss 120 and the injection pipe 112 of the liner 110 are fastened by a screw coupling method. may be
도 6은 본 발명의 제 2 실시예에 따른 고압 저장 용기를 나타낸 단면도이다.6 is a cross-sectional view showing a high-pressure storage vessel according to a second embodiment of the present invention.
도 6을 참조하면, 본 발명의 제 2 실시예에 따른 고압 저장 용기는 라이너(210), 보스(220), 제 1 씰링부재(230), 제 2 씰링부재(240) 및 보강 링(270)을 포함할 수 있다. 라이너(210)의 저장 몸체(211), 저장 몸체(211)의 안착부(211a)와 돌출부(211b), 주입관(212), 제 1 테이퍼 형상부(213) 및 제 1 요철부(214)는 제 1 실시예의 라이너(110)와 관련하여 설명한 바와 같다. 또한, 보스(220)의 보스 몸체(221), 결합홈(222), 제 2 테이퍼 형상부(223), 제 2 요철부(224), 제 1 그루브(225), 제 3 그루브(227), 고정홈(228) 및 나사산(229)은 제 1 실시예의 보스(120)와 관련해 설명한 바와 같다. 또한, 제 1 씰링부재(230), 제 2 씰링부재(240) 및 제 1 접착제(250)도 제 1 실시예와 동일하다.Referring to FIG. 6, the high pressure storage container according to the second embodiment of the present invention includes a liner 210, a boss 220, a first sealing member 230, a second sealing member 240 and a reinforcing ring 270. can include The storage body 211 of the liner 210, the seating portion 211a and the protruding portion 211b of the storage body 211, the injection pipe 212, the first taper-shaped portion 213 and the first concave-convex portion 214 is as described in relation to the liner 110 of the first embodiment. In addition, the boss body 221 of the boss 220, the coupling groove 222, the second tapered portion 223, the second uneven portion 224, the first groove 225, the third groove 227, The fixing groove 228 and the screw thread 229 are the same as those described with respect to the boss 120 of the first embodiment. In addition, the first sealing member 230, the second sealing member 240 and the first adhesive 250 are also the same as those of the first embodiment.
본 발명의 제 2 실시예에 따른 고압 저장 용기는 제 1 실시예와 비교하여 제 2 그루브(226)의 형상이 다르며, 보강 링(270)을 추가적으로 포함한다. 본 발명의 제 2 실시예와 관련하여서는 제 2 그루브(226) 및 보강 링(270)에 관해서만 상세히 살펴본다.The high-pressure storage vessel according to the second embodiment of the present invention has a different shape of the second groove 226 compared to the first embodiment, and additionally includes a reinforcing ring 270. In relation to the second embodiment of the present invention, only the second groove 226 and the reinforcing ring 270 will be described in detail.
본 발명의 제 2 실시예에서, 제 2 그루브(226)는 보스(220)의 결합홈(222)의 내면 중 주입관(12)의 외주면과 맞닿는 면에 반경 방향 외측으로 함입되되 보스 몸체(121)의 길이 방향 일측 단부 측으로 트여져 형성된다. 제 2 그루브(226)가 이와 같이 형성됨으로써 제 2 씰링부재(240)가 제 2 그루브(226)에 용이하게 삽입될 수 있다.In the second embodiment of the present invention, the second groove 226 is recessed radially outward on the inner surface of the coupling groove 222 of the boss 220 and in contact with the outer circumferential surface of the injection pipe 12, but the boss body 121 ) is formed by opening to one end side in the longitudinal direction of the. Since the second groove 226 is formed in this way, the second sealing member 240 can be easily inserted into the second groove 226 .
보강 링(270)은 링형부재로서 제 2 그루브(226)에 제 2 씰링부재(240)가 삽입된 상태에서 제 2 씰링부재(240)와 라이너(210) 사이의 간극을 메꾸며 배치된다. 더욱 상세하게, 보강 링(270)은 제 2 씰링부재(240)와 저장 몸체(211)의 안착부(211a) 사이의 간극을 메꾸며 배치되어 기밀성을 제공한다. 이때, 보강 링(270)의 외주면은 제 2 그루브(226)의 내면에 접하여 배치될 수 있다. 또한, 보강 링(270)과 제 2 씰링부재(240) 사이 또는 보강 링(270)과 안착부(211a) 사이 또는 보강 링(270)과 제 2 그루브(226)의 내면 사이에는 접착제가 배치될 수도 있다.The reinforcing ring 270 is a ring-shaped member and is disposed to fill a gap between the second sealing member 240 and the liner 210 in a state in which the second sealing member 240 is inserted into the second groove 226 . More specifically, the reinforcing ring 270 is disposed to fill the gap between the second sealing member 240 and the seating portion 211a of the storage body 211 to provide airtightness. At this time, the outer circumferential surface of the reinforcing ring 270 may be disposed in contact with the inner surface of the second groove 226 . In addition, an adhesive may be disposed between the reinforcing ring 270 and the second sealing member 240 or between the reinforcing ring 270 and the seating portion 211a or between the reinforcing ring 270 and the inner surface of the second groove 226. may be
보강 링(270)은 보스(220)와 동일한 재질(예를 들면, 알루미늄)으로 이루어질 수 있다. 물론, 보강 링(270)은 제 2 씰링부재(240)와 저장 몸체(211)의 안착부(211a) 사이의 간극을 메꾸며 기밀성을 제공하는 기능을 수행하는 한도 내에서 임의의 다른 재질로 구성될 수도 있다.The reinforcing ring 270 may be made of the same material as the boss 220 (eg, aluminum). Of course, the reinforcing ring 270 is made of any other material within the limit of filling the gap between the second sealing member 240 and the seating portion 211a of the storage body 211 and providing airtightness. It could be.
도 7은 본 발명의 제 3 실시예에 따른 고압 저장 용기를 나타낸 단면도이다.7 is a cross-sectional view showing a high-pressure storage vessel according to a third embodiment of the present invention.
도 7을 참조하면, 본 발명의 제 3 실시예에 따른 고압 저장 용기는 라이너(310), 보스(320), 제 1 씰링부재(330) 및 백업부재(340)를 포함할 수 있다. 라이너(310)의 저장 몸체(311), 주입관(312), 제 1 요철부(313)는 제 1 실시예의 라이너(110)와 관련하여 설명한 바와 같다. 또한, 보스(320)의 보스 몸체(321), 결합홈(322), 제 2 요철부(323), 제 1 그루브(324) 및 나사산(325)은 제 1 실시예의 보스(120)와 동일하다.Referring to FIG. 7 , the high-pressure storage vessel according to the third embodiment of the present invention may include a liner 310, a boss 320, a first sealing member 330, and a backup member 340. The storage body 311 of the liner 310, the injection pipe 312, and the first concave-convex portion 313 are the same as those described in relation to the liner 110 of the first embodiment. In addition, the boss body 321, the coupling groove 322, the second uneven portion 323, the first groove 324, and the screw thread 325 of the boss 320 are the same as those of the boss 120 of the first embodiment. .
본 발명의 제 3 실시예에 따른 고압 저장 용기는 제 1 실시예에 따른 고압 저장 용기에 포함되어 있지 않은 제 1 백업부재(340)를 포함한다. 본 발명의 제 3 실시예에서, 제 1 씰링부재(330) 및 제 1 백업부재(340)는 결합홈(322)의 내면 중 주입관(312)의 내주면과 맞닿는 면에 반경 방향 내측으로 함입되어 형성된 제 1 그루브(324)의 내부에 함께 배치된다.The high-pressure storage vessel according to the third embodiment of the present invention includes the first backup member 340, which is not included in the high-pressure storage vessel according to the first embodiment. In the third embodiment of the present invention, the first sealing member 330 and the first backup member 340 are indented radially inward on the inner surface of the coupling groove 322 in contact with the inner circumferential surface of the injection pipe 312 They are disposed together inside the formed first groove 324 .
제 1 씰링부재(330)는 제 1 그루브(324)에 안착되고 외주면이 주입관(312)의 내주면에 접촉한다. 제 1 씰링부재(330)는 링형상을 가질 수 있다. 예를 들면, 제 1 씰링부재(130)는 오링(O-ring)이 될 수 있다. 제 1 씰링부재(330)는 저장 공간(S)으로부터 주입관(312)의 내주면과 결합홈(322)의 내면 사이의 틈으로 유체가 유출되는 것을 차단한다.The first sealing member 330 is seated in the first groove 324 and its outer circumferential surface contacts the inner circumferential surface of the injection pipe 312 . The first sealing member 330 may have a ring shape. For example, the first sealing member 130 may be an O-ring. The first sealing member 330 blocks the outflow of fluid from the storage space S into the gap between the inner circumferential surface of the injection pipe 312 and the inner surface of the coupling groove 322 .
제 1 백업부재(340)는 제 1 씰링부재(330)가 결합홈(322)의 내면과 주입관(312)의 내주면 사이로 끼어들어가는 것을 방지하도록 제 1 그루브(324)에 제 1 씰링부재(330)와 함께 안착된다. 제 1 백업부재(340)는 링형상을 가질 수 있다. 제 1 백업부재(340)의 외주면은 주입관(312)의 내주면에 밀착될 수 있다.The first backup member 340 is a first sealing member 330 in the first groove 324 to prevent the first sealing member 330 from being inserted between the inner surface of the coupling groove 322 and the inner circumferential surface of the injection pipe 312 ) is settled with The first backup member 340 may have a ring shape. An outer circumferential surface of the first backup member 340 may be in close contact with an inner circumferential surface of the injection pipe 312 .
한편, 제 1 백업부재(340)는 제 1 씰링부재(330)에 비하여 저장 몸체(311)에 대해 외측에 배치될 수 있다. 유체의 유출 시 압력은 저장 몸체(311) 측에서 외측으로 발생하므로 제 1 백업부재(340)가 효과적으로 기능하기 위해서는 제 1 씰링부재(330)에 비하여 저장 몸체(311)에 대해 외측에 배치되는 것이 바람직하다. 또한, 제 1 백업부재(340)는 사각의 단면을 가질 수 있다. 예를 들면, 제 1 백업부재(340)는 폴리에텔에텔케톤(PEEK) 재질로 이루어질 수 있다.Meanwhile, the first backup member 340 may be disposed outside the storage body 311 compared to the first sealing member 330 . When fluid flows out, pressure is generated from the side of the storage body 311 to the outside. Therefore, in order for the first backup member 340 to function effectively, it must be disposed outside the storage body 311 compared to the first sealing member 330. desirable. In addition, the first backup member 340 may have a square cross section. For example, the first backup member 340 may be made of polyether ether ketone (PEEK) material.
도 8은 본 발명의 제 3 실시예의 변형예에 따른 고압 저장 용기를 나타낸 단면도이다.8 is a cross-sectional view showing a high-pressure storage vessel according to a modified example of the third embodiment of the present invention.
도 8을 참조하면, 본 발명의 제 3 실시예의 변형예에 따른 고압 저장 용기에서, 보스(320)는 결합홈(322)의 내면 중 주입관(312)의 외주면과 맞닿는 면에 반경 방향 외측으로 함입된 제 2 그루브(326)를 더 구비한다. 또한, 본 발명의 제 3 실시예의 변형예에 따른 고압 저장 용기는 제 2 그루브(326)에 안착되고 내주면이 주입관(312)의 외주면에 접촉하는 링형의 제 2 씰링부재(330a) 및 제 2 씰링부재(330a)가 결합홈(322)의 내면과 주입관(312)의 외주면 사이로 끼어들어가는 것을 방지하도록 제 2 그루브(326)에 제 2 씰링부재(330a)와 함께 안착되는 링형의 제 2 백업부재(340a)를 더 포함한다.Referring to FIG. 8 , in the high-pressure storage container according to the modified example of the third embodiment of the present invention, the boss 320 extends outward in the radial direction on the surface of the inner surface of the coupling groove 322 in contact with the outer circumferential surface of the injection pipe 312. A recessed second groove 326 is further provided. In addition, the high-pressure storage vessel according to the modified example of the third embodiment of the present invention is seated in the second groove 326 and has an inner circumferential surface in contact with the outer circumferential surface of the injection pipe 312, the ring-shaped second sealing member 330a and the second A ring-shaped second backup seated together with the second sealing member 330a in the second groove 326 to prevent the sealing member 330a from being wedged between the inner surface of the coupling groove 322 and the outer circumferential surface of the injection pipe 312 A member 340a is further included.
제 2 씰링부재(330a)는 저장 공간(S)으로부터 주입관(312)의 내주면과 결합홈(322)의 내면 사이의 틈으로 유출되는 유체가 주입관(312)의 외주면과 결합홈(322)의 내면 사이의 틈을 통해 외부로 유출되는 것을 차단한다. 즉, 제 2 씰링부재(330a)는 제 1 씰링부재(330)의 밀봉 기능을 보완하며 추가적인 밀봉력을 제공한다. 예를 들면, 제 2 씰링부재(330a)는 오링(O-ring)이 될 수 있다.In the second sealing member 330a, the fluid flowing out from the storage space S into the gap between the inner circumferential surface of the injection pipe 312 and the inner surface of the coupling groove 322 flows through the outer circumferential surface of the injection pipe 312 and the coupling groove 322. It blocks outflow to the outside through the gap between the inner surfaces of the That is, the second sealing member 330a supplements the sealing function of the first sealing member 330 and provides additional sealing force. For example, the second sealing member 330a may be an O-ring.
제 2 백업부재(340a)는 링형상을 가질 수 있다. 제 2 백업부재(340a)의 내주면은 주입관(312)의 외주면에 밀착될 수 있다. 또한, 제 2 씰링부재(330a)는 제 2 백업부재(340a)에 비하여 저장 몸체(311)에 대해 외측에 배치될 수 있다. 결합홈(322)의 내면과 주입관(312)의 외주면 사이로 유체가 유출될 경우 압력은 저장 몸체(311)의 외측에서 저장 몸체(311) 측으로 발생하므로 제 2 백업부재(340a)가 효과적으로 기능하기 위해서는 제 2 씰링부재(330a)에 비하여 저장 몸체(311)에 대해 내측에 배치되는 것이 바람직하다. 또한, 제 2 백업부재(340a)는 사각의 단면을 가질 수 있다. 예를 들면, 제 2 백업부재(340a)는 폴리에텔에텔케톤(PEEK) 재질로 이루어질 수 있다.The second backup member 340a may have a ring shape. An inner circumferential surface of the second backup member 340a may be in close contact with an outer circumferential surface of the injection pipe 312 . Also, the second sealing member 330a may be disposed outside the storage body 311 compared to the second backup member 340a. When the fluid flows out between the inner surface of the coupling groove 322 and the outer circumferential surface of the injection tube 312, pressure is generated from the outside of the storage body 311 to the storage body 311, so that the second backup member 340a functions effectively. For this purpose, it is preferable to be disposed on the inner side of the storage body 311 compared to the second sealing member 330a. Also, the second backup member 340a may have a square cross section. For example, the second backup member 340a may be made of polyether ether ketone (PEEK) material.
도 9는 본 발명의 제 3 실시예의 다른 변형예에 따른 고압 저장 용기를 나타낸 단면도이다.9 is a cross-sectional view showing a high-pressure storage vessel according to another modified example of the third embodiment of the present invention.
도 9를 참조하면, 본 발명의 제 3 실시예의 다른 변형예에 따른 고압 저장 용기는 보스 몸체(321)에 형성된 결합홈(322)의 내면과 주입관(312)의 외측 단부면 사이에 제 2 씰링부재(330a)가 배치된다. 제 2 씰링부재(330a)는 주입관(312)의 외측 단부면과 결합홈(322)의 내면 사이에서 가압된 상태로 배치되어, 제 1 씰링부재(330)의 밀봉 기능을 보완하며 추가적인 밀봉력을 제공할 수 있다. 한편, 제 2 씰링부재(330a)의 배치를 위해 결합홈(322)의 내면 및 주입관(312)의 외측 단부 중 어느 하나 이상에 홈이 형성될 수도 있다.Referring to FIG. 9 , in the high-pressure storage container according to another modified example of the third embodiment of the present invention, there is a second gap between the inner surface of the coupling groove 322 formed in the boss body 321 and the outer end surface of the injection pipe 312. A sealing member 330a is disposed. The second sealing member 330a is disposed in a pressurized state between the outer end surface of the injection tube 312 and the inner surface of the coupling groove 322, supplementing the sealing function of the first sealing member 330 and providing additional sealing force. can provide. Meanwhile, a groove may be formed on at least one of an inner surface of the coupling groove 322 and an outer end of the injection pipe 312 for disposition of the second sealing member 330a.
본 발명의 제 1 실시예 및 제 2 실시예와 관련하여 살펴본 바와 같이, 본 발명의 제 3 실시예에 따른 고압 저장 용기는 라이너(310) 및 보스(320)에 각각 테이퍼 형상부를 구비할 수 있으며, 라이너(310)와 보스(320)의 체결 시 테이퍼 형상부 사이의 맞물리는 힘이 제공될 수 있다. 또한, 라이너(310)와 보스(320) 사이에 접착제가 배치되어, 추가적인 결합력을 제공하는 것도 가능하다. 한편, 본 발명의 제 3 실시예와 관련하여 보스(320)가 라이너(310)에 끼움 결합되는 구조를 제시하였으나 나사산의 형성을 전제로 보스(320)와 라이너(310) 사이의 나사 결합이 이루어질 수도 있다.As discussed in relation to the first and second embodiments of the present invention, the high-pressure storage container according to the third embodiment of the present invention may have tapered portions on the liner 310 and the boss 320, respectively, , When the liner 310 and the boss 320 are fastened, an engagement force between the tapered portions may be provided. In addition, an adhesive may be disposed between the liner 310 and the boss 320 to provide additional bonding force. Meanwhile, in relation to the third embodiment of the present invention, a structure in which the boss 320 is fitted to the liner 310 has been suggested, but screw coupling between the boss 320 and the liner 310 is performed on the premise of forming a screw thread. may be
도 10은 본 발명의 일 실시예에 따른 고압 저장 용기 제조 방법의 순서도이다.10 is a flowchart of a method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention.
본 발명의 실시예에 따른 고압 저장 용기 제조 방법은 앞서 살펴본 바와 같은 본 발명의 실시예들에 따른 고압 저장 용기를 제조하기 위한 것이다. 도 10을 참조하면, 본 발명의 일 실시예에 따른 고압 저장 용기 제조 방법은 라이너를 일체로 성형하는 단계(S10) 및 라이너(10)와 보스를 조립하여 결합시키는 단계(S20)를 포함할 수 있다.The method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention is for manufacturing a high-pressure storage vessel according to embodiments of the present invention as described above. Referring to FIG. 10 , the method for manufacturing a high-pressure storage vessel according to an embodiment of the present invention may include integrally molding a liner (S10) and assembling and combining the liner 10 and a boss (S20). there is.
라이너를 일체로 성형하는 단계(S10)에서 라이너는 블로우 몰딩 방식으로 성형될 수 있다. 즉, 라이너는 블로우 몰딩 방식을 통해 일체로 성형될 수 있다.In the step of integrally molding the liner (S10), the liner may be molded using a blow molding method. That is, the liner may be integrally molded through a blow molding method.
종래에는 이종 재질인 라이너와 보스 사이의 결합력 확보를 위해 보스를 라이너에 인서트 사출할 필요가 있었다. 이에 따라 저장 공간을 형성하는 라이너를 2개의 바디(body)로 나누어 사출 성형하고, 사출 성형된 2개의 바디를 열융착시켜 그 내부에 저장 공간이 형성되도록 하는 방식이 널이 쓰여왔다. 그러나 이러한 방식에 의할 경우 2개의 바디를 사출하여야 하므로 생산 속도가 저하되고, 2개의 바디 사이에 대면적으로 열융착 부위가 생겨 열융착 강도에 편차가 발생하는 문제가 생긴다.Conventionally, it was necessary to insert-inject the boss into the liner in order to secure bonding force between the liner and the boss, which are made of different materials. Accordingly, a method of dividing a liner for forming a storage space into two bodies and injection-molding them, and heat-sealing the two injection-molded bodies to form a storage space therein, has been used. However, in the case of this method, since two bodies must be injected, the production speed is lowered, and a large-area heat-sealed area is generated between the two bodies, resulting in a problem of variation in heat-sealed strength.
그러나 앞서 살펴본 바와 같이, 본 발명의 실시예들에 따른 고압 저장 용기는 테이퍼 형상부 사이의 맞물리는 힘, 요철부 사이의 맞물리는 힘, 씰링부재에 의한 체결력 및 기밀성 등을 제공하며, 이를 통해 라이너와 보스 사이의 강한 결합력 및 기밀성을 확보하여 준다. 그러므로 본 발명에 의할 경우 라이너와 보스 사이의 결합력 확보를 위해 보스를 라이너에 인서트 사출할 필요가 없으며 블로우 몰딩 방식을 통해 라이너를 일체로 성형할 수 있게 된다.However, as described above, the high-pressure storage container according to the embodiments of the present invention provides an engaging force between tapered parts, an engaging force between concave-convex parts, a fastening force and airtightness by a sealing member, through which the liner It secures strong bonding and confidentiality between the boss and the boss. Therefore, according to the present invention, it is not necessary to insert-inject the boss into the liner to secure the bonding force between the liner and the boss, and the liner can be integrally molded through a blow molding method.
블로우 몰딩 방식으로 라이너를 일체로 성형할 경우 라이너 전체가 단일하게 하나의 몸체로 형성되므로 수소 기밀성과 품질 안정성을 높일 수 있다. 또한, 2개의 바디를 열융착시키는 공정이 없어짐에 따라 생산성의 향상도 기대할 수 있다.When the liner is integrally molded by the blow molding method, since the entire liner is formed as a single body, hydrogen tightness and quality stability can be improved. In addition, productivity improvement can be expected as the process of heat-sealing the two bodies is eliminated.
라이너와 보스를 조립하여 결합시키는 단계(S20)에서, 보스는 라이너와 조립 체결된다. 보스와 라이너의 조립 체결 구조는 앞서 본 발명의 실시예들에 따른 고압 저장 용기와 관련하여 설명한 바와 같으므로 자세한 설명은 생략한다. 라이너와 보스를 체결할 때, 제 1 씰링부재 등의 배치, 제 1 접착제의 도포 등이 함께 수행될 수 있다.In step S20 of assembling and coupling the liner and the boss, the boss is assembled and fastened to the liner. Since the assembly and fastening structure of the boss and the liner has been described in relation to the high-pressure storage vessel according to the embodiments of the present invention, a detailed description thereof will be omitted. When fastening the liner and the boss, disposition of the first sealing member, application of the first adhesive, etc. may be performed together.
라이너와 보스의 결합 후에는 라이너의 외주면에 내압 성능을 제공하는 쉘을 결합시키는 단계가 수행될 수 있다.After coupling the liner and the boss, a step of coupling a shell providing pressure resistance to an outer circumferential surface of the liner may be performed.
본 발명의 실시예들에 대하여 설명하였으나, 본 발명의 사상은 본 명세서에 제시되는 실시예들에 의해 제한되지 아니한다. 본 발명의 사상을 이해하는 당업자는 동일한 사상의 범위 내에서, 구성요소의 부가, 변경, 삭제, 추가 등에 의해서 다른 실시예를 용이하게 제안할 수 있을 것이나, 이 또한 본 발명의 사상범위 내에 든다고 할 것이다.Although the embodiments of the present invention have been described, the spirit of the present invention is not limited by the embodiments presented herein. Those skilled in the art who understand the spirit of the present invention may easily suggest other embodiments by addition, change, deletion, addition, etc. of elements within the scope of the same spirit, but this is also within the spirit of the present invention. will be.

Claims (19)

  1. 고압 유체의 저장을 위한 저장 공간이 내부에 형성된 저장 몸체와, 상기 저장 공간을 외부와 연통시키며 상기 저장 몸체의 일측에서 외측으로 연장된 주입관을 구비하는 라이너; 및A liner having a storage body having a storage space for storing high-pressure fluid formed therein, and an injection pipe extending outward from one side of the storage body while communicating the storage space with the outside; and
    길이 방향을 따라 관통된 관형의 보스 몸체와, 상기 보스 몸체가 상기 저장 공간을 외부와 연통시키며 상기 주입관에 결합될 수 있도록 상기 보스 몸체의 길이 방향 일측 단부에서 타측으로 함입되어 형성되고 상기 주입관이 결합되는 결합홈을 구비하는 보스;를 포함하는 고압 저장 용기.A tubular boss body penetrating along the longitudinal direction, and the boss body is formed by being recessed from one end of the longitudinal direction of the boss body to the other side so that the boss body communicates the storage space with the outside and is coupled to the injection pipe, and the injection pipe A high-pressure storage vessel including a boss having a coupling groove to which the coupling is coupled.
  2. 제 1 항에 있어서,According to claim 1,
    상기 주입관의 내주면에는 상기 외측에서 상기 저장 몸체 측으로 갈수록 상기 주입관의 내경을 감소시키는 제 1 테이퍼 형상부가 구비되고, 상기 보스는 상기 결합홈의 내면 중 주입관의 내주면과 맞닿는 면에 상기 제 1 테이퍼 형상부에 상응하는 제 2 테이퍼 형상부를 구비하는 고압 저장 용기.The inner circumferential surface of the injection pipe is provided with a first tapered portion that decreases the inner diameter of the injection pipe from the outer side toward the storage body, and the boss is provided on a surface of the inner surface of the coupling groove in contact with the inner circumferential surface of the injection pipe. A high-pressure storage vessel having a second tapered portion corresponding to the tapered portion.
  3. 제 1 항에 있어서,According to claim 1,
    상기 주입관의 외주면의 적어도 일부분에는 길이 방향을 따라 요철이 반복되는 제 1 요철부가 구비되고, 상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 상기 제 1 요철부와 맞물리는 제 2 요철부를 구비하는 고압 저장 용기.At least a portion of the outer circumferential surface of the injection pipe is provided with a first concave-convex portion in which irregularities are repeated along the longitudinal direction, and the boss is engaged with the first concave-convex portion on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe A high-pressure storage vessel having a second concave-convex portion.
  4. 제 1 항에 있어서,According to claim 1,
    상기 보스는 상기 결합홈의 내면 중 상기 주입관의 내주면과 맞닿는 면에 반경 방향 내측으로 함입된 제 1 그루브를 구비하고,The boss has a first groove recessed inward in the radial direction on a surface of the inner surface of the coupling groove in contact with the inner circumferential surface of the injection pipe,
    상기 제 1 그루브에 안착되고 외주면이 상기 주입관의 내주면에 접촉하는 링형의 제 1 씰링부재를 더 포함하는 고압 저장 용기.The high-pressure storage container further comprises a ring-shaped first sealing member seated in the first groove and having an outer circumferential surface in contact with an inner circumferential surface of the injection pipe.
  5. 제 4 항에 있어서,According to claim 4,
    상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입된 제 2 그루브를 구비하고,The boss has a second groove recessed radially outward on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection pipe,
    상기 제 2 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 2 씰링부재를 더 포함하는 고압 저장 용기.The high-pressure storage container further comprises a ring-shaped second sealing member seated in the second groove and having an inner circumferential surface in contact with an outer circumferential surface of the injection pipe.
  6. 제 5 항에 있어서,According to claim 5,
    상기 제 1 씰링부재 및 제 2 씰링부재 중 어느 하나는 상기 주입관과 접하는 면에 반경 방향 외측 또는 내측으로 함입된 함입부를 구비하고 상기 함입부의 상측 및 하측 부분이 상기 주입관의 외주면 또는 상기 주입관의 내주면에 면접촉하는 고압 저장 용기.Any one of the first sealing member and the second sealing member has a recessed part radially outward or inward on a surface in contact with the injection pipe, and upper and lower portions of the recessed part are the outer circumferential surface of the injection pipe or the injection pipe High-pressure storage vessel in surface contact with the inner circumferential surface of the.
  7. 제 6 항에 있어서,According to claim 6,
    상기 제 1 씰링부재 및 제 2 씰링부재 중 나머지 하나는 상기 주입관을 사이에 두고 상기 함입부와 마주보는 위치에서 상기 주입관의 내주면 또는 상기 주입관의 외주면에 접촉하는 고압 저장 용기.The other one of the first sealing member and the second sealing member contacts the inner circumferential surface of the injection pipe or the outer circumferential surface of the injection pipe at a position facing the recessed portion with the injection pipe interposed therebetween.
  8. 제 1 항에 있어서,According to claim 1,
    상기 저장 몸체는 상기 주입관의 둘레에 링형으로 형성된 안착부를 구비하고,The storage body has a seating portion formed in a ring shape around the injection tube,
    상기 보스 몸체의 길이 방향 일측 단부 중 상기 결합홈으로부터 반경 방향 외측 부분은 상기 안착부에 안착되는 고압 저장 용기.A high-pressure storage container wherein a radially outer portion of one end of the boss body in the longitudinal direction from the coupling groove is seated in the seating portion.
  9. 제 8 항에 있어서,According to claim 8,
    상기 보스는 상기 보스 몸체의 상기 안착부와 접하는 면에 원형으로 함입된 제 3 그루브를 구비하고,The boss has a third groove circularly embedded in a surface of the boss body in contact with the seating portion,
    상기 제 3 그루브에 도포되어 상기 보스와 상기 안착부 사이에 접합력을 제공하는 제 1 접착제를 더 포함하는 고압 저장 용기.The high-pressure storage container further includes a first adhesive applied to the third groove to provide bonding force between the boss and the seating portion.
  10. 제 8 항에 있어서,According to claim 8,
    상기 주입관의 외주면과 상기 안착부에 도포된 제 2 접착제를 더 포함하는 고압 저장 용기.The high-pressure storage container further comprises a second adhesive applied to the outer circumferential surface of the injection pipe and the seating portion.
  11. 제 1 항에 있어서,According to claim 1,
    상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입되되 상기 보스 몸체의 길이 방향 일측 단부 측으로 트여진 제 1 그루브를 구비하고,The boss is recessed radially outward on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection tube and has a first groove open toward one end side in the longitudinal direction of the boss body,
    상기 제 1 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 1 씰링부재; 및a ring-shaped first sealing member seated in the first groove and having an inner circumferential surface in contact with an outer circumferential surface of the injection pipe; and
    상기 제 1 씰링부재와 상기 라이너 사이의 간극을 메꾸며 배치되는 보강 링;을 더 포함하는 고압 저장 용기.The high-pressure storage container further comprising a reinforcing ring disposed to fill a gap between the first sealing member and the liner.
  12. 제 1 항에 있어서,According to claim 1,
    상기 보스는 상기 결합홈의 내면 중 상기 주입관의 내주면과 맞닿는 면에 반경 방향 내측으로 함입된 제 1 그루브를 구비하고,The boss has a first groove recessed inward in the radial direction on a surface of the inner surface of the coupling groove in contact with the inner circumferential surface of the injection pipe,
    상기 제 1 그루브에 안착되고 외주면이 상기 주입관의 내주면에 접촉하는 링형의 제 1 씰링부재; 및a ring-shaped first sealing member seated in the first groove and having an outer circumferential surface in contact with an inner circumferential surface of the injection pipe; and
    상기 제 1 씰링부재가 상기 결합홈의 내면과 상기 주입관의 내주면 사이로 끼어들어가는 것을 방지하도록 상기 제 1 그루브에 상기 제 1 씰링부재와 함께 안착되는 링형의 제 1 백업부재;를 더 포함하는 고압 저장 용기.A high-pressure storage further comprising a ring-shaped first backup member seated together with the first sealing member in the first groove to prevent the first sealing member from being inserted between the inner surface of the coupling groove and the inner circumferential surface of the injection pipe. courage.
  13. 제 12 항에 있어서,According to claim 12,
    상기 제 1 백업부재는 상기 제 1 씰링부재에 비하여 상기 저장 몸체에 대해 외측에 배치되는 고압 저장 용기.The first backup member is disposed outside the storage body compared to the first sealing member.
  14. 제 12 항에 있어서,According to claim 12,
    상기 제 1 백업부재는 사각의 단면을 가지는 고압 저장 용기.The first backup member is a high-pressure storage container having a square cross section.
  15. 제 12 항에 있어서,According to claim 12,
    상기 보스는 상기 결합홈의 내면 중 상기 주입관의 외주면과 맞닿는 면에 반경 방향 외측으로 함입된 제 2 그루브를 더 구비하고,The boss further includes a second groove recessed outward in a radial direction on a surface of the inner surface of the coupling groove in contact with the outer circumferential surface of the injection tube,
    상기 제 2 그루브에 안착되고 내주면이 상기 주입관의 외주면에 접촉하는 링형의 제 2 씰링부재; 및a ring-shaped second sealing member seated in the second groove and having an inner circumferential surface in contact with an outer circumferential surface of the injection pipe; and
    상기 제 2 씰링부재가 상기 결합홈의 내면과 상기 주입관의 외주면 사이로 끼어들어가는 것을 방지하도록 상기 제 2 그루브에 상기 제 2 씰링부재와 함께 안착되는 링형의 제 2 백업부재;를 더 포함하는 고압 저장 용기.A high-pressure storage further comprising a ring-shaped second backup member seated together with the second sealing member in the second groove to prevent the second sealing member from being inserted between the inner surface of the coupling groove and the outer circumferential surface of the injection pipe. courage.
  16. 제 15 항에 있어서,According to claim 15,
    상기 제 2 씰링부재는 상기 제 2 백업부재에 비하여 상기 저장 몸체에 대해 외측에 배치되는 고압 저장 용기.The second sealing member is disposed outside the storage body compared to the second backup member.
  17. 제 15 항에 있어서,According to claim 15,
    상기 제 2 씰링부재는 사각의 단면을 가지는 고압 저장 용기.The second sealing member has a square cross-section.
  18. 제 12 항에 있어서,According to claim 12,
    상기 결합홈의 내면과 상기 주입관의 외측 단부면 사이에 배치되는 제 2 씰링부재를 더 포함하는 고압 저장 용기.The high-pressure storage container further comprises a second sealing member disposed between the inner surface of the coupling groove and the outer end surface of the injection tube.
  19. 제 1 항 내지 제 18 항 중 어느 한 항의 고압 저장 용기를 제조하는 방법으로서,A method of manufacturing the high-pressure storage vessel of any one of claims 1 to 18,
    블로우 몰딩 방식으로 상기 라이너를 일체로 성형하는 단계; 및integrally molding the liner using a blow molding method; and
    상기 라이너와 상기 보스를 조립하여 결합시키는 단계;를 포함하는 고압 저장 용기 제조 방법.Assembling and combining the liner and the boss.
PCT/KR2022/013541 2021-09-15 2022-09-08 High-pressure storage container and method for manufacturing same WO2023043136A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR20210123001 2021-09-15
KR10-2021-0123001 2021-09-15
KR1020210190939A KR20230040241A (en) 2021-09-15 2021-12-29 High pressure storage tank and method for manufacturing the same
KR10-2021-0190939 2021-12-29
KR1020220060052A KR20230040259A (en) 2021-09-15 2022-05-17 High pressure storage tank and method for manufacturing the same
KR10-2022-0060052 2022-05-17

Publications (1)

Publication Number Publication Date
WO2023043136A1 true WO2023043136A1 (en) 2023-03-23

Family

ID=85603188

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/013541 WO2023043136A1 (en) 2021-09-15 2022-09-08 High-pressure storage container and method for manufacturing same

Country Status (1)

Country Link
WO (1) WO2023043136A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110220659A1 (en) * 2010-03-10 2011-09-15 Gm Global Technology Operations, Inc. Liner for a pressure vessel and method
US20110220661A1 (en) * 2010-03-10 2011-09-15 Gm Global Technology Operations, Inc. Clamped liner-boss connection
JP2015031307A (en) * 2013-07-31 2015-02-16 株式会社Fts High pressure tank
KR20200066000A (en) * 2018-11-30 2020-06-09 롯데케미칼 주식회사 Sealing device of high-pressure tank and high-pressure tank having the same
JP2020115042A (en) * 2014-07-28 2020-07-30 クアンタム フュール システムズ エルエルシー Composite material pressure tank boss mounted with pressure relief part

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110220659A1 (en) * 2010-03-10 2011-09-15 Gm Global Technology Operations, Inc. Liner for a pressure vessel and method
US20110220661A1 (en) * 2010-03-10 2011-09-15 Gm Global Technology Operations, Inc. Clamped liner-boss connection
JP2015031307A (en) * 2013-07-31 2015-02-16 株式会社Fts High pressure tank
JP2020115042A (en) * 2014-07-28 2020-07-30 クアンタム フュール システムズ エルエルシー Composite material pressure tank boss mounted with pressure relief part
KR20200066000A (en) * 2018-11-30 2020-06-09 롯데케미칼 주식회사 Sealing device of high-pressure tank and high-pressure tank having the same

Similar Documents

Publication Publication Date Title
WO2018016914A1 (en) High-pressure vessel for vehicle
RU2528773C2 (en) Design of neck of pressure container
WO2013080810A1 (en) Pressure container and method for manufacturing pressure container
CA3053051C (en) Pole cap with a pressure port element for pressure vessels
WO2013008719A1 (en) Pressure vessel
US10487982B2 (en) High-pressure vessel
JP2011102614A (en) Sealing structure of pressure vessel
US20220099250A1 (en) High-pressure tank having sealing boss and manufacturing method thereof
WO2023043136A1 (en) High-pressure storage container and method for manufacturing same
KR20010049578A (en) Method for producing a connector
WO2020111840A1 (en) Pressure vessel boss and pressure vessel having same
US8839979B2 (en) Tank and tank manufacturing method
WO2021071225A1 (en) Inner composite frame multi-joined barrel, shell-integrated projectile propellant tank including same, and method for manufacturing same
CN113217814A (en) Inward-turning type high-hydrogen-resistance plastic-metal seal head sealing structure
CN116379334A (en) Sealing structure of valve seat of plastic liner and forming process thereof
WO2020111842A1 (en) Sealing apparatus for high-pressure tank and high-pressure tank comprising same
WO2024035070A1 (en) High-pressure storage container and manufacturing method thereof
KR20190005102A (en) Liner for Drum
WO2021101238A1 (en) Knob cap for high pressure tank
CN112393112B (en) Bottleneck seal structure and high-pressure composite container
CN115405849A (en) IV-type hydrogen storage cylinder end sealing structure and preparation method thereof
KR20230040259A (en) High pressure storage tank and method for manufacturing the same
KR102645860B1 (en) High pressure storage container and method for manufacturing the same
WO2022245008A1 (en) High-pressure storage container and manufacturing method thereof
KR20230040241A (en) High pressure storage tank and method for manufacturing the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22870220

Country of ref document: EP

Kind code of ref document: A1