WO2024043415A1 - 보스 조립체, 기체저장용기, 및 보스 조립체를 제조하는 방법 - Google Patents
보스 조립체, 기체저장용기, 및 보스 조립체를 제조하는 방법 Download PDFInfo
- Publication number
- WO2024043415A1 WO2024043415A1 PCT/KR2022/020778 KR2022020778W WO2024043415A1 WO 2024043415 A1 WO2024043415 A1 WO 2024043415A1 KR 2022020778 W KR2022020778 W KR 2022020778W WO 2024043415 A1 WO2024043415 A1 WO 2024043415A1
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- WO
- WIPO (PCT)
- Prior art keywords
- main body
- liner
- boss assembly
- axis
- flange member
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/04—Protecting sheathings
- F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0604—Liners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0619—Single wall with two layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0646—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/066—Plastics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0305—Bosses, e.g. boss collars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0184—Fuel cells
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- 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 boss assembly coupled to a liner, a gas storage container including them, and a method of manufacturing the boss assembly.
- the boss assembly is related to a structure to prevent gas leakage inside the liner when the boss assembly is coupled to the liner. It relates to a method of manufacturing an assembly, a gas storage vessel, and a boss assembly.
- a gas storage container is a cylindrical container that stores gas inside, and is applied to various fields that require gas.
- the fuel cell system of a hydrogen vehicle can be an example of this field.
- the fuel cell system consists of a fuel cell stack that generates electrical energy, a fuel supply system that supplies hydrogen as fuel to the fuel cell stack, an air supply system that supplies oxygen in the air, an oxidizing agent necessary for electrochemical reactions, to the fuel cell stack, and a fuel cell. Includes a management system that controls the operating temperature of the stack.
- High-pressure compressed hydrogen of more than 700 bar is stored in the gas storage container provided in the fuel supply system, that is, the hydrogen supply system, and this stored compressed hydrogen is released into the high-pressure line according to the on/off of the high-pressure regulator mounted at the inlet of the gas storage container. After that, the pressure is reduced through the starting valve and the hydrogen supply valve and supplied to the fuel cell stack.
- the boss assembly that forms the hydrogen inlet of the liner is manufactured separately from the liner and coupled to the liner.
- sealing members such as O-rings and backup rings are interposed between the boss assembly and the liner to ensure hydrogen tightness. maintained.
- a sealing member in addition to the boss assembly, which is the main component, a sealing member must be separately manufactured and assembled, making the process complicated and resulting in an increase in manpower and cost.
- the sealing performance of the sealing member inevitably deteriorates over time, and thus periodic replacement of parts is required.
- the present invention was created in consideration of the above-described problems, and its purpose is to provide a boss assembly with a simple structure that prevents high-pressure gas inside the liner from leaking, and a gas storage container including the same.
- the boss assembly provided to be coupled to the opening of the liner along the longitudinal axis of the liner of the gas storage container is made of metal with a first gas inlet and inlet extending along the axis.
- the main body of; It is coupled to the main body, and includes a flange member made of resin having a flange coupling portion coupled to the liner and a second gas inlet disposed on the axis to communicate with the first gas inlet, and connected to the main body in an arc shape.
- a concavo-convex coupling portion including a formed engaging groove and an engaging rib formed on the flange member and inserted into and engaged with the engaging groove is provided.
- the engaging groove may have a cross-sectional shape of a dove tail whose width expands along the depth direction of the main body. As a result, the coupling force between the main body and the flange member can be increased.
- a lateral edge of the cross-sectional shape of the engaging groove may extend at an angle ranging from 20 degrees to 40 degrees with respect to the axis in the depth direction.
- a gas storage container includes a liner having an opening on one side along the longitudinal axis;
- a boss assembly provided to be coupled to the opening of the liner, the boss assembly comprising: a body made of metal and having a first gas inlet extending along the axis; It is coupled to the main body, and includes a flange member made of resin having a flange coupling portion coupled to the liner and a second gas inlet disposed on the axis to communicate with the first gas inlet, and connected to the main body in an arc shape.
- a concavo-convex coupling portion including a formed engaging groove and an engaging rib formed on the flange member and inserted into and engaged with the engaging groove is provided.
- the method of manufacturing a boss assembly provided to be coupled to an opening of the liner along the longitudinal axis of the liner of a gas storage container includes processing metal to form a first gas inlet extending along the axis. forming a body with a body; preheating the main body to a temperature range of 140 to 160 degrees Celsius and charging it into the injection space within the mold; and forming a flange member coupled to the main body and having a second gas inlet disposed on the axis to communicate with the first gas inlet by injecting resin into the injection space of the mold.
- the metal may include aluminum
- the resin may include polyamide 6 (PA6).
- the temperature range at which the main body is preheated may be set as low as a temperature in the range of 40 to 30 percent of the melting point of the resin.
- a control unit that controls to form a flange member coupled to the main body and having a second gas inlet disposed on the axis to communicate with the first gas inlet by injecting resin into the injection space of the mold.
- Figure 1 is a perspective view of a gas storage container.
- Figure 2 is a cross-sectional view of the gas storage container cut along the axial direction.
- Figure 3 is a plan view showing the lower side of the main body of the boss assembly.
- Figure 4 is a cross-sectional view of the main part showing the concave-convex joint portion.
- Figure 5 is a block diagram of a boss assembly manufacturing apparatus.
- Figure 6 is a flow chart showing how the manufacturing device manufactures the boss assembly.
- Figure 1 is a perspective view of a gas storage container.
- Figure 2 is a cross-sectional view of the gas storage container cut along the axial direction.
- Figure 3 is a plan view showing the lower side of the main body of the boss assembly.
- the gas storage container 1 has a long cylindrical shape centered on a predetermined longitudinal axis.
- the gas storage container 1 has a storage space capable of storing gas therein, and an opening 1100 communicating with the storage space is formed on one side.
- the position of the opening 1100 in the gas storage container 1 is located on the longitudinal axis, but the opening 1100 does not necessarily have to be placed on the axis.
- Gas may be charged into the storage space through the above-described opening 1100 or gas may be discharged from the storage space.
- the field to which the gas storage container (1) is applied and the type of gas stored in the gas storage container (1) are not limited.
- the gas storage container 1 is applied to a hydrogen vehicle and can be provided to store high-pressure hydrogen of at least 700 bar or more.
- the gas storage container 1 includes a liner 1000.
- the liner 1000 forms the body or main body of the gas storage container 1, and the storage space and opening 1100 of the gas storage container 1 mentioned above are provided in the liner 1000.
- the liner 1000 is required to have various properties such as durability, impact resistance, and fire resistance, and to meet these requirements, the liner 1000 may be made of various materials.
- the liner 1000 may be made of a metal material such as aluminum or steel.
- the liner 1000 may be made of a metal material, and its outer peripheral surface may be reinforced with a glass fiber composite material.
- the liner 1000 may be manufactured from a non-metallic material such as high-density plastic. Since the liner 1000 made of non-metallic material is relatively light in weight, it is applied to the gas storage container 1 installed in a hydrogen vehicle.
- the gas storage vessel 1 includes a boss assembly 2000.
- the boss assembly 2000 forms a gas inlet of the gas storage container 1 and is coupled to the liner 1000 to communicate with the opening 1100 provided on the longitudinal axis of the liner 1000.
- the outer peripheral surfaces of the boss assembly 2000 and the liner 1000 are reinforced by being surrounded by a carbon fiber (3000) composite material. It is manufactured.
- the boss assembly 2000 is manufactured as a separate part from the liner 1000 and is then combined, and a sealing structure is required to prevent high-pressure hydrogen in the liner 1000 from leaking.
- the boss assembly 2000 includes a main body 2100 and a flange member 2200 coupled to the main body 2100.
- the main body 2100 and the flange member 2200 are each made of different materials, and form the boss assembly 2000 by combining heterogeneous materials.
- the main body 2100 includes a metal material, for example, aluminum.
- the flange member 2200 includes a resin material, for example, PA6 (Polyamide 6).
- PA6 is a material that has the characteristic amide group (NHCO) of polyamide in its molecular chain, and is made through ring-opening polymerization using caprolactam. PA6 has excellent mechanical strength, heat resistance, chemical resistance, oil resistance, formability, and wear resistance.
- each of the main body 2100 and the flange member 2200 is only one example among several applicable metals or resins, and depending on the design method, a different type of metal or resin from the examples in this embodiment may be used. It can be applied. A detailed description of the boss assembly 2000 and a description of the case of manufacturing the boss assembly 2000 using different types of materials will be described later.
- the boss assembly 2000 is disposed on the upper side of the liner 1000 to cover the opening 1100 of the liner 1000.
- the boss assembly 2000 is coupled to the liner 1000 by heat-sealing the lower side of the flange member 2200 of the boss assembly 2000 to a region 1200 on the upper side of the liner 1000.
- the liner 1000 of this embodiment includes the same PA6 material as the flange member 2200, and can be heat-sealed to the flange member 2200. In this state, the boss assembly 2000 and the liner 1000 are combined, and the outer peripheral surface of the boss assembly 2000 and the liner 1000 is surrounded by carbon fiber 3000, thereby reinforcing the strength of the gas storage container 1. do.
- the material of the liner 1000 is not limited to PA6 and may be made of the same resin as the material of the flange member 2200. Even if it is different, it may be made of a material that has similar physical and chemical properties to the flange member 2200.
- the boss assembly 2000 includes a body 2100 made of metal and a flange member 2200 made of PA6 coupled to the body 2100.
- the main body 2100 and the flange member 2200 are disposed along the longitudinal axis (hereinafter referred to as 'axis') of the liner 1000.
- the main body 2100 and the flange member 2200 have the shape of a rotating body formed by rotating about an axis.
- the main body 2100 has a first gas inlet 2110 extending along the axis.
- the first gas inlet 2110 has threads 2120 for screw connection in one area of the inner surface, and is provided so that an external pipe or stopper connected to the first gas inlet 2110 is screwed together.
- the lower side of the main body 2100 (FIG. 4), that is, the plate surface in the direction from the main body 2100 to the liner 1000, and the plate surface facing the upper plate surface of the flange member 2200, have a first gas inlet in the center. (2110) has a disk shape.
- the flange member 2200 has a second gas inlet 2210 extending along the axis.
- the second gas inlet 2210 communicates with the first gas inlet 2110 and the opening 1100 of the liner 1000, thereby forming an entrance to the gas storage container 1.
- the top surface of the flange member 2200 contacts the lower side of the main body 2100.
- the outer diameter (outermost perimeter) of the flange member 2200 along the radial direction of the axis is larger than the outer diameter of the main body 2100.
- the flange member 2200 has a disk shape centered on the second gas inlet 2210 and includes a flange coupling portion 2220 formed on the lower side of the disk.
- the flange coupling portion 2220 is heat-sealed to the upper side of the liner 1000 forming the opening 1100, thereby allowing the boss assembly 2000 to be coupled to the liner 1000.
- the boss assembly 2000 is required to maintain airtightness to prevent high-pressure gas from leaking out. Therefore, the main body 2100 and the flange member 2200 need to be firmly coupled to maintain airtightness, rather than simply supporting each other. For this purpose, the boss assembly 2000 includes an uneven coupling portion 2300 provided on the main body 2100 and the flange member 2200. Additionally, when manufacturing the boss assembly 2000, a method of preheating the main body 2100 to improve the bonding force between the main body 2100 and the flange member 2200 may be applied, which will be described later.
- Figure 4 is a cross-sectional view of the main part showing the concave-convex joint portion.
- the uneven coupling portion 2300 includes a plurality of engaging grooves 2310 formed in an arc shape around the axis on the lower side of the main body 2100, and a flange member 2200. It is formed on the upper plate surface and includes a plurality of engaging ribs 2320 that are inserted into and engaged with each of the plurality of engaging grooves 2310.
- the uneven coupling portion 2300 includes four engaging grooves 2310 and the corresponding four engaging ribs 2320, but the number of engaging grooves 2310 and engaging ribs 2320 is , spacing, mutually spaced positions, etc. are not limited to this embodiment.
- only one engagement groove 2310 and one engagement rib 2320 may be provided.
- the uneven coupling portion 2300 includes a plurality of engaging grooves 2310, the plurality of engaging grooves 2310 are arranged in a concentric circle shape (see FIG. 4).
- the lower side of the main body 2100 where the engaging groove 2310 is formed is not a flat surface, and some areas form a curved surface. Accordingly, the recessed direction of at least some of the plurality of engaging grooves 2310 is provided to be different from the recessed direction of the rest. This serves to disperse the external force intended to separate the main body 2100 and the flange member 2200 from acting on the boss assembly 2000.
- the engaging groove 2310 has a cross-sectional shape of a dove tail whose width is expanded along the depth direction of the main body 2100, that is, the depression direction.
- the cross-section of the engaging groove 2310 shows an inverted trapezoid shape.
- the cross section of the engaging groove 2310 includes the inner edge 2311 in the depth direction of the main body 2100, the inlet 2312 formed by the lower side of the main body 2100, the inner edge 2311, and the inlet 2312. It consists of two lateral edges (2313) connecting.
- the width of the inner edge 2311 is longer than the width of the inlet 2312. As a result, the coupling between the main body 2100 and the flange member 2200 becomes more robust.
- the engaging rib 2320 is configured to engage with the engaging groove 2310, it is provided to correspond to the shape of the engaging groove 2310, the numerical value of each part, and the arranged position.
- each part of the engaging groove 2310 is not limited to a specific numerical value since design changes are possible.
- the maximum length of the boss assembly 2000 along the axis is 10.8 (hereinafter, the unit is cm), and the maximum diameter of the boss assembly 2000 along the radial direction of the axis is 20.9.
- the width of the inner edge 2311 is 4.44
- the width of the inlet 2312 is 2.66
- the gap between the inner edge 2311 and the inlet 2312 is 1.54.
- the area between the inner edge 2311 and the lateral edge 2313, or between the entrance 2312 and the lateral edge 2313 may be rounded, for example, with a curvature of 0.3 diameter.
- the angle between the inner edge 2311 and the lateral edge 2313 is set to range between 50 degrees and 70 degrees. That is, the angle of the side edge 2313 with respect to the axis is set to a range between 20 degrees and 40 degrees. If the angle of the side edge 2313 with respect to the axis is lower than 20 degrees, the rigidity of the connection by the uneven coupling portion 2300 is reduced. On the other hand, if the angle of the side edge 2313 with respect to the axis is greater than 40 degrees, as will be described later, during the injection process for manufacturing the boss assembly 2000, an area may occur that the injected resin does not reach.
- the above-mentioned angle range is a range that can meet both the requirements for the rigidity of the coupling by the uneven coupling portion 2300 and the accuracy of injection molding of the flange member 2200.
- Figure 5 is a block diagram of a boss assembly manufacturing apparatus.
- the manufacturing device 100 for manufacturing the boss assembly 2000 includes a forging device 110, a heat treatment device 120, a processing device 130, and a surface treatment device 140. ), including the injection device 150.
- the manufacturing device 100 may include various sub-devices and equipment required for the process.
- the forging device 110 forms the main body 2100 by forging an aluminum material.
- the forging device 110 performs forging of a cylindrical aluminum material using a press.
- the heat treatment device 120 performs heat treatment on the forged body 2100.
- the heat treatment device 120 performs solution treatment to maintain the main body 2100 in a solid solution state in a temperature range of 500 degrees Celsius to 525 degrees Celsius, and water the main body 2100.
- the processing device 130 includes polishing equipment, a three-dimensional measuring device, a shape and roughness measuring device, etc., and finely processes the surface of the main body 2100 into the detailed dimensions and shape required for the main body 2100.
- the surface treatment device 140 performs surface treatment of the processed main body 2100.
- the surface treatment device 140 includes, for example, anodizing process equipment.
- the surface treatment device 140 includes a pretreatment process in which the main body 2100 is alternately quenched in a basic solution and an acidic solution and then washed with water, and the main body 2100 is immersed in a mixed solution of triazine thiol sodium (TTN) and sulfuric acid (A TTN electropolymerization process of immersing and electrolyzing 2100 and a drying process of washing and drying the main body 2100 are performed.
- TTN triazine thiol sodium
- sulfuric acid A TTN electropolymerization process of immersing and electrolyzing 2100 and a drying process of washing and drying the main body 2100 are performed.
- the injection device 150 manufactures the boss assembly 2000 by creating a flange member 2200 coupled to the main body 2100 using PA6.
- the injection device 150 includes a mold 151.
- the mold 151 is a metal frame with a space corresponding to the external shape of the boss assembly 2000. With the main body 2100 accommodated in the space, liquid PA6 is injected and spread to be coupled to the main body 2100. It is provided to manufacture the flange member 2200.
- the shape or method of the mold 151 is not limited.
- the mold 151 includes a first mold fixed to the ground and a second mold movable with respect to the first mold. After PA6 is injected with the first mold and the second mold in contact to form a space, the second mold moves after the solidification of PA6 is completed to separate the boss assembly 2000 from the mold 151. do.
- the injection device 150 includes an injection unit 152.
- the injection unit 152 includes a storage tank that stores liquid PA6, a flow pipe connecting the storage tank and the mold, and a pump that pumps the PA6 in the storage tank to move to the mold through the flow pipe.
- the injection unit 152 injects the required amount of PA6 into the space within the mold 151 under the control of the control unit 154.
- the injection device 150 includes a heater 153.
- the heater 153 preheats the main body 2100 to a preset temperature range in the step before charging it into the mold 151.
- the heater 153 is provided in the injection unit 152 and the mold 151 to preheat the mold 151 at a controlled temperature. The preheating temperature range of the main body 2100 by the heater 153 will be described later.
- the injection device 150 includes a control unit 154.
- the control unit 154 is implemented with hardware circuits such as a microprocessor, microcontroller, and chipset, and instructs and controls overall operations of the injection device 150, including driving the heater 153 and the injection unit 152.
- Figure 6 is a flow chart showing how the manufacturing device manufactures the boss assembly.
- the manufacturing apparatus 100 forms the main body 2100 by processing metal, for example, aluminum.
- Step 210 is performed by the forging device 110, heat treatment device 120, processing device 130, and surface treatment device 140 among the lower devices of the manufacturing device 100.
- step 220 the manufacturing device 100 controls the heater 153 to preheat the main body 2100 to a temperature range between 140 degrees Celsius and 160 degrees Celsius.
- the process below step 220 is performed by the injection device 150 among the lower devices of the manufacturing device 100.
- step 230 the manufacturing device 100 charges the preheated body 2100 into the injection space within the mold 151.
- the manufacturing device 100 controls the heater 153 to preheat the mold 151 to a temperature range of, for example, 80 to 90 degrees Celsius.
- step 240 the manufacturing apparatus 100 forms the flange member 2200 by injecting a resin, for example, PA6, into the injection space within the mold 151.
- a resin for example, PA6,
- step 250 the manufacturing apparatus 100 separates the boss assembly 2000 from the mold 151.
- the manufacturing apparatus 100 can manufacture the boss assembly 2000 in which the main body 2100 and the flange member 2200 are heterogeneously joined.
- the main body 2100 can be made of various metal materials other than aluminum, and the flange member 2200 can also be made of various types of engineering plastic materials such as various resins other than PA6, such as PA66, PA12, PA13, PA63, and PA6C. You can.
- the preheating temperature range in step 220 is set as low as a temperature in the range of 40 to 30 percent of the melting point of the resin that is the material of the flange member 2200 to be coupled to the main body 2100.
- the charged main body 2100 affects the solidification of the resin in the injection space due to its metal material (in particular, aluminum has high thermal conductivity).
- the main body 2100 is preheated to a temperature range considering the melting point of the resin, then charged into the mold 151 and the resin is injected, so that the strength of the above-mentioned bond can be guaranteed.
- the preheating temperature range of the main body 2100 can be determined even when different types of engineering plastics are used.
- the preheating temperature condition is 130 degrees
- the flange member 2200 is separated from the main body 2100.
- the adhesion of the flange member 2200 to the main body 2100 decreases due to shrinkage of PA6, resulting in hydrogen leakage.
- the main body 2100 and the flange member 2200 maintain an adhesive state and no hydrogen leakage occurs.
- the manufacturing device 100 controls the preheating temperature range of the main body 2100 according to the material of the flange member 2200, thereby forming a boss assembly 2000 with enhanced adhesion between the main body 2100 and the flange member 2200. ) can be manufactured.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims (7)
- 기체저장용기의 라이너의 길이방향 축선을 따라서 상기 라이너의 개구에 결합되도록 마련된 보스 조립체에 있어서,상기 축선을 따라서 연장된 제1기체출입구를 가진 금속 재질의 본체와;상기 본체에 결합되며, 상기 제1기체출입구와 연통되도록 상기 축선 상에 배치된 제2기체출입구 및 상기 라이너에 결합되게 마련된 플랜지결합부를 가진 수지 재질의 플랜지부재를 포함하고,상기 본체에 원호상으로 형성된 물림그루브와, 상기 플랜지부재에 형성되며 상기 물림그루브 내에 삽입되어 맞물리는 물림리브를 포함하는 요철결합부가 마련된 보스 조립체.
- 제1항에 있어서,상기 물림그루브는 그 단면 형상이 상기 본체의 깊이방향을 따라서 폭이 확장되는 도브테일(dove tail) 형상을 가지는 보스 조립체.
- 제2항에 있어서,상기 물림그루브의 상기 단면 형상의 측방 모서리는 상기 깊이방향의 축선에 대해 20도 내지 40도 사이 범위의 각도로 연장된 보스 조립체.
- 기체저장용기에 있어서,길이방향 축선을 따라서 일측에 개구가 마련된 라이너와;상기 라이너의 상기 개구에 결합되도록 마련된 보스 조립체를 포함하고,상기 보스 조립체는,상기 축선을 따라서 연장된 제1기체출입구를 가진 금속 재질의 본체와;상기 본체에 결합되며, 상기 제1기체출입구와 연통되도록 상기 축선 상에 배치된 제2기체출입구 및 상기 라이너에 결합되게 마련된 플랜지결합부를 가진 수지 재질의 플랜지부재를 포함하고,상기 본체에 원호상으로 형성된 물림그루브와, 상기 플랜지부재에 형성되며 상기 물림그루브 내에 삽입되어 맞물리는 물림리브를 포함하는 요철결합부가 마련된 기체저장용기.
- 기체저장용기의 라이너의 길이방향 축선을 따라서 상기 라이너의 개구에 결합되도록 마련된 보스 조립체의 제조 방법에 있어서,금속을 가공하여 상기 축선을 따라서 연장된 제1기체출입구를 가진 본체를 형성하는 단계와;상기 본체를 섭씨 140도 내지 160도 사이의 온도 범위로 예열하여 금형 내 사출공간에 장입하는 단계와;상기 금형의 상기 사출공간에 수지를 주입함으로써, 상기 본체에 결합되며, 상기 제1기체출입구와 연통되도록 상기 축선 상에 배치된 제2기체출입구를 가진 플랜지부재를 형성하는 단계를 포함하는 방법.
- 제5항에 있어서,상기 금속은 알루미늄을 포함하며, 상기 수지는 PA6(Polyamide 6)을 포함하는 방법.
- 제5항에 있어서,상기 본체가 예열되는 상기 온도 범위는, 상기 수지의 용융점으로부터 상기 용융점의 40 내지 30퍼센트 범위의 온도만큼 낮게 설정되는 방법.
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EP22956620.3A EP4579122A1 (en) | 2021-08-27 | 2022-12-20 | Boss assembly, gas storage container, and boss assembly manufacturing method |
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KR20210114232 | 2021-08-27 | ||
KR1020220106842A KR102788144B1 (ko) | 2021-08-27 | 2022-08-25 | 보스 조립체, 기체저장용기, 및 보스 조립체를 제조하는 방법 |
KR10-2022-0106842 | 2022-08-25 |
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US20080190938A1 (en) * | 2007-02-09 | 2008-08-14 | I-Mark Inc. | Tank and Tank Insert |
JP2017072264A (ja) * | 2012-07-18 | 2017-04-13 | 三菱レイヨン株式会社 | 圧力容器 |
KR20190041457A (ko) * | 2016-06-28 | 2019-04-22 | 파버 인더스트리 에스.피.에이. | 압력 수용기 |
KR20190061607A (ko) * | 2017-11-28 | 2019-06-05 | 주식회사 동희산업 | 차량용 고압용기 |
KR20210060919A (ko) * | 2019-11-19 | 2021-05-27 | 롯데케미칼 주식회사 | 고압탱크용 노브캡 |
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DE69206114T2 (de) * | 1992-01-10 | 1996-04-18 | Technical Products Group Inc | Polstück für ein fasergewickeltes Druckgefäss. |
KR20030041002A (ko) * | 2001-11-19 | 2003-05-23 | 이중희 | 고압용기용 밀폐식 금속성 노즐 및 금속성 노즐을플라스틱용기에 결착시키는 방법 |
JP4961202B2 (ja) * | 2006-12-28 | 2012-06-27 | 日本ポリエチレン株式会社 | 圧力容器及びその製造方法 |
KR20170130649A (ko) * | 2016-05-18 | 2017-11-29 | 일진복합소재 주식회사 | 압력용기 |
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- 2022-08-25 KR KR1020220106842A patent/KR102788144B1/ko active Active
- 2022-12-20 EP EP22956620.3A patent/EP4579122A1/en active Pending
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Patent Citations (5)
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US20080190938A1 (en) * | 2007-02-09 | 2008-08-14 | I-Mark Inc. | Tank and Tank Insert |
JP2017072264A (ja) * | 2012-07-18 | 2017-04-13 | 三菱レイヨン株式会社 | 圧力容器 |
KR20190041457A (ko) * | 2016-06-28 | 2019-04-22 | 파버 인더스트리 에스.피.에이. | 압력 수용기 |
KR20190061607A (ko) * | 2017-11-28 | 2019-06-05 | 주식회사 동희산업 | 차량용 고압용기 |
KR20210060919A (ko) * | 2019-11-19 | 2021-05-27 | 롯데케미칼 주식회사 | 고압탱크용 노브캡 |
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EP4579122A1 (en) | 2025-07-02 |
KR20230033600A (ko) | 2023-03-08 |
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