Pressure vessel

Abstract

The present invention relates to a pressure vessel comprising: a cylinder part, a first nozzle member, a second nozzle member, and a plurality of clamping rings, the cylinder part is arranged in a predetermined square area and has a diameter corresponding to the length of one side of the square area; the first nozzle member is arranged at one end of the cylinder part; the second nozzle member is arranged at the opposite end of the cylinder part; the plurality of clamping rings are arranged in the square area, positioned outside the cylinder part, and configured to lock the first nozzle member and the second nozzle member to the cylinder part, thereby improving space utilization and design freedom.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10-2021-0084943, filed on June 29, 2021, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to a pressure vessel, and more specifically, to a pressure vessel that can improve space utilization and design freedom. Background Technology

[0004] Hydrogen fuel cell vehicles are configured to generate electricity through a chemical reaction between hydrogen and oxygen, and then drive an electric motor to propel themselves. A hydrogen fuel cell vehicle includes: a hydrogen tank (H2 tank), a fuel cell stack, various types of devices, a battery, a controller, and an electric motor. The hydrogen tank (H2 tank) is configured to store hydrogen (H2); the fuel cell stack is configured to generate electricity through a redox reaction between hydrogen and oxygen (O2); various types of devices are configured to discharge the generated water; the battery is configured to store the electricity generated by the fuel cell stack; the controller is configured to convert and control the generated electricity; and the electric motor is configured to generate driving power.

[0005] Type 4 pressure vessels can be used as hydrogen tanks for hydrogen fuel cell vehicles. A Type 4 pressure vessel includes a liner (e.g., a non-metallic material) and a carbon fiber layer. The liner includes a cylindrical portion and a convex portion. The carbon fiber layer is formed by winding a carbon fiber composite material around the outer surface of the liner.

[0006] At the same time, various attempts have been made recently to minimize the space occupied by pressure vessels, thereby improving the space utilization and design freedom of hydrogen fuel cell vehicles.

[0007] In particular, various attempts have recently been made to install multiple small-diameter pressure vessels in the limited battery space, instead of a single large pressure vessel (hydrogen tank), thereby enabling the use of a common platform for hydrogen fuel cell vehicles and electric vehicles.

[0008] However, in related technologies, since pressure vessels are cylindrical with a circular cross-section, a dead zone is inevitably defined between adjacent pressure vessels. To ensure sufficient storage space and a sufficient aspect ratio, the diameter of the pressure vessel is difficult to reduce to a certain extent, and the space used to install the pressure vessel needs to be sufficient. Therefore, there are problems with deteriorated space utilization and design freedom.

[0009] Furthermore, while carbon fiber composites are lightweight, possess excellent strength and elasticity, they are extremely expensive (for example, approximately 20 times or more more expensive than typical carbon steel of the same weight). Therefore, to reduce the manufacturing cost of pressure vessels, the use of carbon fiber composites must be minimized.

[0010] However, if the amount of carbon fiber composite material used to form the carbon fiber layer of the pressure vessel is reduced (e.g., if the thickness of the carbon fiber layer is reduced) by a predetermined amount or more, the problem is that it is difficult to ensure sufficient structural stiffness of the pressure vessel (e.g., structural stiffness to resist stresses applied to the pressure vessel in the circumferential and longitudinal directions), and stability and reliability deteriorate.

[0011] Furthermore, unlike the stress applied to the cylindrical portion of the pressure vessel (circumferential stress), the stress applied to the convex portion of the pressure vessel is irregular (the stress applied to the convex portion is not uniform overall). Therefore, to adequately ensure the structural stiffness of the convex portion of the pressure vessel, a sufficiently thick layer of carbon fiber composite material needs to be wound around the convex portion, which inevitably leads to an increase in the amount of carbon fiber composite material used.

[0012] Therefore, recent studies have focused on improving space utilization and design freedom, and minimizing the use of carbon fiber composites by further reducing the size of pressure vessels; however, the results remain insufficient. Thus, a technology needs to be developed to improve space utilization and design freedom while minimizing the use of carbon fiber composites. Summary of the Invention

[0013] This invention provides a pressure vessel that can improve space utilization and design freedom.

[0014] In particular, the present invention can ensure sufficient storage space for pressure vessels and contributes to the miniaturization of pressure vessels.

[0015] This invention can also ensure the structural rigidity of the pressure vessel and minimize the amount of carbon fiber composite material used.

[0016] This invention can improve the durability, stability and efficiency of pressure vessels, reduce the weight of pressure vessels, and lower manufacturing costs.

[0017] This invention can simplify the manufacturing process and improve the manufacturing efficiency of pressure vessels.

[0018] The objectives to be achieved by each implementation scheme are not limited to those described above, but also include objectives or effects that can be understood from the schemes or implementation schemes described below.

[0019] An exemplary embodiment of the present invention provides a pressure vessel comprising: a cylindrical portion, a first nozzle member, a second nozzle member, and a plurality of clamping rings, the cylindrical portion being disposed in a predetermined square region and having a diameter corresponding to the length of one side of the square region; the first nozzle member being disposed at one end of the cylindrical portion; the second nozzle member being disposed at the opposite end of the cylindrical portion; and the plurality of clamping rings being disposed in the square region, positioned outside the cylindrical portion, and configured to lock the first nozzle member and the second nozzle member to the cylindrical portion.

[0020] This is to further reduce the size of the pressure vessel while ensuring sufficient storage space.

[0021] In other words, in related technologies, since pressure vessels are cylindrical in shape with a circular cross-section, empty areas are inevitably defined between adjacent pressure vessels. To ensure sufficient storage space and a sufficient slenderness ratio, the diameter of the pressure vessel is difficult to reduce to a certain extent, and the space used to install the pressure vessel needs to be ensured to a certain extent. Therefore, there are problems with deteriorated space utilization and design freedom.

[0022] In particular, since pressure vessels in related technologies have convex portions arranged at opposite ends of the cylindrical portion, reducing the diameter of the cylindrical portion inevitably reduces the size of the convex portions. Therefore, it is difficult to ensure sufficient mounting space in the convex portions for installing nozzle components (nozzle components for connecting valves and pipes). Consequently, it is difficult to reduce the diameter of the cylindrical portion to a certain extent.

[0023] However, according to an embodiment of the invention, the first nozzle component and the second nozzle component are disposed at opposite ends of the cylindrical portion, and a clamping ring locks the first nozzle component and the second nozzle component to the cylindrical portion. Therefore, the diameter of the cylindrical portion can be further reduced while ensuring sufficient space for mounting the nozzle components (the first nozzle component and the second nozzle component).

[0024] Furthermore, according to embodiments of the invention, the storage space for storing a fluid (e.g., hydrogen) (the space jointly defined by the cylinder, the first nozzle member, and the second nozzle member) has a cylindrical structure, excluding the convex portion (the convex portion is removed from the cylindrical structure having opposite ends). Therefore, in the type of stress applied by the fluid, stress applied in the circumferential direction (circumferential direction of the cylinder) (circumferential stress) can be applied to the cylinder, and in the type of stress applied by the fluid, stress applied in the longitudinal direction (axial direction of the cylinder) can be applied to the clamping ring instead of the cylinder. Therefore, stress concentration at specific locations in the storage space can be suppressed (irregular stress concentration at the convex portion of pressure vessels in related technologies can be suppressed). Thus, advantageous effects of improved structural stiffness, safety, and reliability can be obtained.

[0025] Furthermore, according to embodiments of the present invention, unlike pressure vessels in related technologies, a convex portion with a hemispherical shape may not be included. Therefore, it is advantageous to simplify the process of winding carbon fiber composite materials and to suppress the increase in the amount of carbon fiber composite material used to ensure the structural stiffness of the convex portion.

[0026] In other cases, according to embodiments of the invention, the clamping rings are arranged in a predetermined square region (square box space). Therefore, the advantages of simplified overall pressure vessel structure, reduced pressure vessel size, increased design freedom, and improved space utilization can be achieved.

[0027] That is, according to an embodiment of the invention, the clamping ring is arranged in an empty area, which is necessarily defined between a predetermined square region and a cylindrical portion having a circular cross-section. Therefore, the clamping ring can be installed without guaranteeing additional space for its installation, thereby further reducing the size of the pressure vessel.

[0028] The clamping ring can have various structures that can lock the first nozzle component and the second nozzle component to the barrel.

[0029] For example, the clamping ring may include: a first side clamping portion, a second side clamping portion, and a connecting clamping portion, wherein the first side clamping portion is supported on the first nozzle member; the second side clamping portion is supported on the second nozzle member; and the connecting clamping portion is configured to continuously connect the first side clamping portion and the second side clamping portion.

[0030] According to an exemplary embodiment of the present invention, a pressure vessel may include: a first base portion and a second base portion, the first base portion protruding from a side surface of the first nozzle member and configured such that a first side clamping portion is disposed on the first base portion; the second base portion protruding from a side surface of the second nozzle member and configured such that a second side clamping portion is disposed on the second base portion.

[0031] Specifically, both the first base portion and the second base portion can be semi-circular in shape, the first side clamping portion can be in close contact with the first base portion, and the second side clamping portion can be in close contact with the second base portion.

[0032] Clamping rings can be made from various materials depending on the required conditions and design specifications.

[0033] According to an exemplary embodiment of the present invention, the clamping ring may be made of at least one of reinforcing fibers, thermosetting resin or thermoplastic resin.

[0034] For example, with the first nozzle member and the second nozzle member connected to opposite ends of the cylinder, the clamping ring can be assembled to partially surround the first nozzle member and the second nozzle member.

[0035] According to another embodiment of the invention, with the first nozzle member and the second nozzle member coupled to opposite ends of the cylinder, the clamping ring can be provided by winding reinforcing fibers to partially surround the first nozzle member and the second nozzle member.

[0036] According to another exemplary embodiment of the invention, the diameter of the cylinder can be determined as a value between the maximum diameter of the cylinder when it is at its maximum expansion just before it bursts and the minimum diameter of the cylinder when it is in an unexpanded state.

[0037] According to another exemplary embodiment of the invention, the clamping ring may have a circular cross-section or a non-circular cross-section.

[0038] According to an exemplary embodiment of the present invention, a pressure vessel may include: a first side plate and a second side plate, the first side plate being connected to the first base portion and configured to cover the side of the first side clamping portion; the second side plate being connected to the second base portion and configured to cover the side of the second side clamping portion.

[0039] By providing the first and second side plates as described above, it is possible to achieve the advantageous effect of suppressing the separation of the clamping ring and stably maintaining the clamping ring in the state of being placed on the first base portion and the second base portion.

[0040] According to an exemplary embodiment of the present invention, the pressure vessel may include a sealing portion configured to seal the gap between the cylindrical portion and at least one of the first nozzle member or the second nozzle member.

[0041] For example, the sealing portion may include: a first sealing member configured to seal the gap; and a second sealing member arranged adjacent to the first sealing member and configured to seal the gap.

[0042] According to the embodiments of the invention described above, the gap between the cylinder and the first nozzle member (or the second nozzle member) is sealed by a double-sealing structure achieved by the first sealing member and the second sealing member. Therefore, advantageous effects can be obtained by improving safety and reliability and effectively suppressing leakage of fluid (e.g., hydrogen) from the gap between the cylinder and the first nozzle member (or the second nozzle member).

[0043] According to an exemplary embodiment of the present invention, multiple pressure vessels may be arranged in a single layer or multiple layers.

[0044] According to an exemplary embodiment of the present invention, multiple square regions can be provided, and the multiple square regions can be arranged adjacent to each other to define a matrix, and the cylindrical portions can be respectively provided in the square regions.

[0045] For example, multiple square regions that each contain a pressure vessel can be arranged as a defined one-dimensional or two-dimensional matrix, depending on the required conditions and design specifications.

[0046] According to an exemplary embodiment of the present invention, the pressure vessel may include: a plurality of connection holes respectively disposed in adjacent first nozzle members; and a connection member having one end connected to any one of the adjacent first nozzle members and the opposite end connected to the other of the adjacent first nozzle members.

[0047] According to an exemplary embodiment of the present invention, adjacent second nozzle components can be connected to each other via connecting holes and connecting components.

[0048] According to an exemplary embodiment of the present invention, the pressure vessel may include: a guide protrusion disposed on either of adjacent second nozzle members; and a guide groove disposed in the other adjacent second nozzle member and configured to receive the guide protrusion such that the guide protrusion is slidable in the longitudinal direction of the cylinder.

[0049] Adjacent second nozzle components each have a guide groove and a guide protrusion as described above. Therefore, when either of the adjacent cylinders expands (expands in the longitudinal direction), relative movement between the second nozzle components in the longitudinal direction of the cylinder is allowed, while relative movement between the second nozzle components in another direction (e.g., a direction intersecting the longitudinal direction of the cylinder) is suppressed.

[0050] According to an exemplary embodiment of the present invention, the pressure vessel may include a connecting member configured to integrally connect an adjacent first nozzle member.

[0051] As described above, since the multiple first nozzle components are connected to each other through connecting components, it is possible to achieve the beneficial effects of maintaining the configuration and arrangement of multiple pressure vessels more stably and improving safety and reliability.

[0052] According to an exemplary embodiment of the present invention, a plurality of second nozzle components may be connected to each other via connecting components.

[0053] According to an exemplary embodiment of the present invention, the pressure vessel may include: a spacer and an intermediate clamping ring, the spacer being inserted between adjacent first nozzle members and between adjacent second nozzle members; the intermediate clamping ring being arranged between adjacent cylindrical portions and configured to partially surround adjacent first nozzle members, the spacer, and adjacent second nozzle members.

[0054] As described above, since the spacer is provided between adjacent pressure vessels (e.g., between adjacent first nozzle members), a predetermined space can be ensured between adjacent pressure vessels, which allows adjacent cylinders to expand in the diametrical direction.

[0055] Furthermore, in embodiments of the present invention, the clamping rings are not separately disposed on different pressure vessels, but can share a single intermediate clamping ring as the clamping ring for different pressure vessels. Therefore, the advantage of simplified structure can be obtained.

[0056] According to an exemplary embodiment of the present invention, the cylindrical portion may include: an inner liner and a reinforcing layer, the inner liner having a storage space; the reinforcing layer being configured to surround the outer peripheral surface of the inner liner, the reinforcing layer being made of at least one of reinforcing fibers, thermosetting resin or thermoplastic resin.

[0057] According to an exemplary embodiment of the present invention, at least one of the first nozzle component or the second nozzle component may include: a nozzle body and a nozzle cover, the nozzle body being coupled to one end of the barrel; the nozzle cover being configured to be movable relative to the nozzle body in the longitudinal direction of the barrel, and the clamping ring being supported on the nozzle cover.

[0058] As described above, since the nozzle cap moves linearly relative to the nozzle body in the longitudinal direction of the barrel, the gap between the nozzle body and the nozzle cap (the gap in the longitudinal direction of the barrel) can be selectively adjusted. Therefore, it is advantageous to obtain an installation state that allows for easy assembly of the clamping ring and secure support of the clamping ring.

[0059] According to an exemplary embodiment of the present invention, the pressure vessel may include a reinforcing member disposed between the cylindrical portion and the clamping ring, and the reinforcing member may have a receiving groove for receiving the clamping ring.

[0060] As described above, according to the embodiments of the present invention, the effects of improved space utilization and design freedom can be achieved.

[0061] In particular, according to embodiments of the invention, it is possible to achieve the beneficial effects of ensuring sufficient storage space for the pressure vessel and contributing to the miniaturization of the pressure vessel.

[0062] Furthermore, according to embodiments of the present invention, it is possible to achieve the beneficial effects of ensuring the structural stiffness of the pressure vessel and minimizing the amount of carbon fiber composite material used.

[0063] Furthermore, according to embodiments of the present invention, beneficial effects such as improved durability and stability can be obtained.

[0064] Furthermore, according to embodiments of the present invention, the advantages of improving the efficiency of the pressure vessel, reducing the weight of the pressure vessel, and lowering manufacturing costs can be achieved.

[0065] Furthermore, according to the embodiments of the present invention, the advantages of simplified manufacturing process and improved manufacturing efficiency can be obtained. Attached Figure Description

[0066] Figure 1 This is a diagram illustrating a pressure vessel according to an embodiment of the present invention.

[0067] Figure 2 This is a diagram illustrating a square region of a pressure vessel according to an embodiment of the present invention.

[0068] Figure 3 This is an exploded perspective view illustrating a pressure vessel according to an embodiment of the present invention.

[0069] Figure 4 This is a diagram illustrating the cylinder and clamping ring of a pressure vessel according to an embodiment of the present invention.

[0070] Figure 5 This is a diagram illustrating a first nozzle component of a pressure vessel according to an embodiment of the present invention.

[0071] Figure 6 This is a diagram illustrating a second nozzle component of a pressure vessel according to an embodiment of the present invention.

[0072] Figures 7 to 9 This is a diagram illustrating an example of a variation of the clamping ring of a pressure vessel according to an embodiment of the present invention.

[0073] Figure 10 This is a diagram illustrating the arrangement of pressure vessels according to an embodiment of the present invention.

[0074] Figures 11 to 14 This is a diagram illustrating various arrangements of a pressure vessel according to embodiments of the present invention.

[0075] Figure 15 This is a diagram illustrating a spacer in a pressure vessel according to an embodiment of the present invention.

[0076] Figure 16 This is a diagram illustrating the connecting members of a pressure vessel according to an embodiment of the present invention.

[0077] Figure 17 This is a diagram illustrating the intermediate clamping ring of a pressure vessel according to an embodiment of the present invention.

[0078] Figure 18This is a diagram illustrating the guide protrusion and guide groove of a pressure vessel according to an embodiment of the present invention.

[0079] Figure 19 This is a diagram illustrating the unexpanded state of the cylinder of a pressure vessel according to an embodiment of the present invention.

[0080] Explanation of reference numerals in the attached figures:

[0081] 10: Pressure Vessel

[0082] 20: Square area

[0083] 100: Cylindrical section

[0084] 110: Lining

[0085] 120: Reinforcement Layer

[0086] 210: First nozzle component

[0087] 210a: First base section

[0088] 212: Nozzle body

[0089] 214: Nozzle cover

[0090] 216: First side plate

[0091] 218: Connecting hole

[0092] 219: Connecting components

[0093] 220: Second nozzle component

[0094] 220a: Second base section

[0095] 226: Second side panel

[0096] 228: Guiding protrusion

[0097] 229: Guide groove

[0098] 230: Connecting components

[0099] 240: Spacer

[0100] 242: Through hole

[0101] 250: Sealing part

[0102] 252: First sealing component

[0103] 254: Second sealing component

[0104] 260: Reinforcing Component

[0105] 260a: Receiving groove

[0106] 300: Clamping ring

[0107] 300': Intermediate clamping ring

[0108] 310: First side clamping part

[0109] 320: Second side clamping part

[0110] 330: Connecting clamping part. Detailed Implementation

[0111] It should be understood that the term "vehicle" or "of a vehicle" or other similar terms as used herein generally includes motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, boats including various vessels, aircraft, etc., and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other vehicles powered by alternative fuels (e.g., fuels derived from non-petroleum energy sources). As mentioned herein, a hybrid vehicle is a vehicle with two or more power sources, such as both gasoline and electric power.

[0112] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, values, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, values, steps, operations, elements, components, and / or groups thereof. As described herein, the term “and / or” includes any and all combinations of one or more of the associated enumerated items. Throughout the specification, unless expressly stated to the contrary, the term “comprising” and variations such as “including” or “comprising of” should be understood to mean including the stated elements but not excluding any other elements. Furthermore, the terms “unit,” “device,” “component,” and “module” described in the specification mean a unit for performing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof.

[0113] Furthermore, the control logic of this application can be implemented as a non-transient computer-readable medium on a computer-readable medium, containing executable program instructions that are executed by a processor, controller, etc. Examples of computer-readable media include, but are not limited to, ROM, RAM, optical disc (CD)-ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage devices. The computer-readable medium can also be distributed across a network-connected computer system, allowing it to be stored and executed in a distributed manner, for example, via a telematics server or a controller area network (CAN).

[0114] Exemplary embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0115] However, the spirit of the invention is not limited to the embodiments described herein, but can be implemented in various different forms. Within the scope of the spirit of the invention, one or more of the constituent elements in the embodiments can be selectively combined and substituted.

[0116] Furthermore, unless otherwise specifically and explicitly defined and stated, the terminology (including technical and scientific terms) used in embodiments of this invention may be interpreted as having a meaning that would be commonly understood by one of ordinary skill in the art to which this invention pertains. The meaning of commonly used terms, such as those defined in dictionaries, may be interpreted in light of the contextual meaning of related technologies.

[0117] Furthermore, the terminology used in the embodiments of this invention is for illustrative purposes and is not intended to limit the invention.

[0118] In this specification, unless otherwise specified, the singular form may also include the plural form. The expression "at least one (or one or more) of A, B and C" may include one or more of all combinations that can be obtained by combining A, B and C.

[0119] Furthermore, terms such as first, second, A, B, (a) and (b) can be used to describe the constituent elements of embodiments of the present invention.

[0120] These terms are used only to distinguish one constituent element from another, and the nature, order, or sequence of the constituent elements are not limited by these terms.

[0121] Furthermore, when a component is described as being “connected,” “joined,” or “attached” to another component, a component may be directly connected, joined, or attached to another component, or may be connected, joined, or attached to another component through another component inserted therein.

[0122] Furthermore, the expression "one component is positioned above or below another component" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are positioned or arranged between two components. The expression "above or below" can refer to the downward and upward directions based on a component.

[0123] See Figures 1 to 19 According to an embodiment of the present invention, a pressure vessel 10 includes a cylindrical portion 100, a first nozzle member 210, a second nozzle member 220, and a clamping ring 300, wherein the cylindrical portion 100 is arranged in a predetermined square region 20 and has a diameter corresponding to the length of one side of the square region 20; the first nozzle member 210 is arranged at one end of the cylindrical portion 100; the second nozzle member 220 is arranged at the opposite end of the cylindrical portion 100; and the clamping ring 300 is arranged in the square region 20, positioned outside the cylindrical portion 100, and configured to lock the first nozzle member 210 and the second nozzle member 220 to the cylindrical portion 100.

[0124] For reference, the pressure vessel 10 according to an embodiment of the present invention can be used to store high-pressure fluids (liquids or gases). The present invention is not limited or restricted by the type and properties of the fluid stored in the pressure vessel 10.

[0125] Below, an example will be described of the pressure vessel 10 according to an embodiment of the present invention as a hydrogen tank used in a hydrogen storage system for a hydrogen fuel cell vehicle.

[0126] See Figure 2 The cylindrical portion 100 is arranged in a predetermined square region 20, and its diameter corresponds to the length of one side of the square region 20.

[0127] In this case, the square region 20 can be defined as a space provided in the form of a quadrilateral box with a square cross-section (i.e., a cross-section with four sides of equal length and four right angles at the vertices) capable of accommodating the cylindrical section 100.

[0128] The dimensions of the square region 20 (i.e., the length of one side of the square region) can be varied according to required conditions and design specifications. This invention is not constrained or limited by the dimensions of the square region 20.

[0129] See Figures 2 to 4 The cylindrical portion 100 is a hollow cylindrical shape with a circular cross-section. The diameter (outer diameter) D of the cylindrical portion 100 is defined as the length corresponding to the length L of one side of the square region 20.

[0130] According to exemplary embodiments of the present invention, such as Figure 19As shown, the diameter D of the cylinder 100 can be determined as a value between the maximum diameter (e.g., D) of the cylinder 100 when it is at its maximum expansion just before it bursts and the minimum diameter (e.g., D') of the cylinder 100 when it is in an unexpanded state.

[0131] In this context, the maximum diameter of the cylinder 100 can be understood as the diameter of the cylinder 100 when it is expanded to its maximum size but does not burst. The minimum diameter of the cylinder 100 can be understood as the diameter of the cylinder 100 when it is not expanded (e.g., the cylinder 100 is in a state of thermal shrinkage under the lowest temperature environment in which the cylinder is managed, or the initial manufacturing state of the cylinder 100 before internal pressure testing).

[0132] Therefore, the length L of one side of the square region 20 can be determined as a value between the maximum diameter (e.g., D) and the minimum diameter (e.g., D') of the cylindrical portion 100.

[0133] In particular, the maximum working pressure of the cylinder 100 can be lower than the burst pressure of the cylinder 100 (i.e., the pressure at which the cylinder bursts).

[0134] In addition, see Figure 19 When the diameter D of the cylinder 100 is the maximum diameter when the cylinder 100 is at its maximum expansion, the diameter D' of the cylinder when the cylinder 100 is in an unexpanded state (e.g., the initial manufacturing state of the cylinder 100 before the internal pressure test) can be defined as a length shorter than the length L of one side of the square region (D' < L).

[0135] The cylindrical portion 100 can have various structures, and its diameter corresponds to the length L of one side of the square region 20 (D = L). The present invention is not constrained or limited by the structure of the cylindrical portion 100.

[0136] For example, the cylinder 100 may include a liner 110 and a reinforcing layer 120, the liner 110 having a storage space and the reinforcing layer 120 being configured to surround the outer peripheral surface of the liner 110.

[0137] The liner 110 may be a hollow cylindrical structure with a storage space therein, and the storage space may store high-pressure hydrogen.

[0138] The opening (installation space) into which the first nozzle component 210 is inserted and installed can be located at one end of the liner 110 (based on...). Figure 3 The opening (installation space) into which the second nozzle component 220 is inserted and installed can be located at the opposite end of the liner 110 (based on the left end). Figure 3 (right end).

[0139] The material of the liner 110 can be varied according to required conditions and design specifications. This invention is not constrained or limited by the material of the liner 110.

[0140] Specifically, the liner 110 can be made of a non-metallic material, such as high-density plastic, which has excellent resilience and fatigue resistance. According to another embodiment of the invention, the liner can be made of a metal or other plastic material.

[0141] A reinforcing layer 120 is provided to ensure resistance to stresses applied to the liner 110 (structural stiffness), and the reinforcing layer 120 surrounds the entire outer peripheral surface of the liner 110.

[0142] The reinforcing layer 120 can have various structures and be made of various materials depending on the required conditions and design specifications. This invention is not constrained or limited by the structure and materials of the reinforcing layer 120.

[0143] According to an exemplary embodiment of the present invention, the reinforcing layer 120 may be made of at least one of reinforcing fibers, thermosetting resin or thermoplastic resin.

[0144] Below, an example in which the reinforcing layer 120 is made of carbon fiber composite material, which is a type of reinforcing fiber, will be described.

[0145] For example, the reinforcing layer 120 can be made by winding a carbon fiber composite material around the outer surface (outer peripheral surface) of the liner 110 using a typical winding device. The carbon fiber composite material can be made by impregnating carbon fibers with epoxy resin, thermosetting resin, etc.

[0146] The structure of the wound carbon fiber composite material and the method of winding the carbon fiber composite material can be varied according to the required conditions and design specifications. The present invention is not limited or constrained by the winding method of the carbon fiber composite material. For example, the reinforcing layer 120 can be made by winding multiple layers of carbon fiber composite material around the outer surface of the liner 110 in various ways (e.g., clockwise winding, counterclockwise winding, oblique winding, etc.).

[0147] In particular, the reinforcing layer 120 can be used to ensure structural stiffness against stresses (e.g., maximum circumferential stresses) that are primarily applied in the circumferential direction among the stress types applied to the liner 110.

[0148] According to an exemplary embodiment of the present invention, the reinforcing layer 120 may include: a first reinforcing layer (ring layer) (not shown) and a second reinforcing layer (spiral layer) (not shown), the first reinforcing layer being made by winding a carbon fiber composite material around the outer surface of the inner liner 110 at a winding angle of 90° based on the axis of the inner liner 110; the second reinforcing layer being made by winding a carbon fiber composite material around the outer surface of the inner liner 110 at a winding angle of ±45° based on the axis of the inner liner 110.

[0149] The first reinforcing layer can be used to ensure resistance (structural stiffness) against the main stresses (circumferential stresses) applied to the liner 110 in the circumferential direction. Conversely, the second reinforcing layer can be used to resist torsion, bending, and axial stresses (axial stresses) applied to the liner 110 in the longitudinal direction (axial direction of the liner 110).

[0150] The first and second reinforcing layers may be stacked alternately along the radial direction of the liner 110. The present invention is not constrained or limited by the thickness of the first and second reinforcing layers.

[0151] For reference, in the above embodiments of the present invention, an example has been described in which the reinforcing layer 120 includes both a first reinforcing layer and a second reinforcing layer. However, according to another embodiment of the present invention, only either the first reinforcing layer or the second reinforcing layer may constitute the reinforcing layer.

[0152] According to another embodiment of the invention, the reinforcing layer can be made by using an intermediate material (prepreg material, prepreg tow, etc.) that has been pre-impregnated with a thermosetting or thermoplastic resin and then partially cured by applying processes such as fiber winding, weaving, multifilament winding.

[0153] See Figure 5 The first nozzle component 210 may be located at one end of the closed cylindrical portion 100 (e.g., based on...). Figure 3 While supporting the left end of each clamping ring 300, it also supports one end of each clamping ring 300 (first side clamping portion). The first nozzle member 210 may have a nozzle hole (not shown) for connecting various types of components, such as valves and pipes.

[0154] The first nozzle component 210 may have various structures capable of supporting the clamping ring 300 at one end of the closed cylindrical portion 100. The present invention is not constrained or limited by the structure of the first nozzle component 210.

[0155] According to an exemplary embodiment of the present invention, the first nozzle member 210 may include a nozzle body 212 coupled to one end of the barrel portion 100, and a nozzle cap 214 configured to surround the nozzle body 212. A clamping ring 300 may be coupled to the nozzle cap 214.

[0156] For example, the first base portion 210a may protrude from two opposite side surfaces of the first nozzle member 210 (nozzle cover), and one end (first side clamping portion) of each clamping ring 300 may be mounted on the first base portion 210a. Specifically, the first base portion 210a may be semi-circular in shape, and one end of the clamping ring 300 may be in close contact with and supported on the first base portion 210a. Furthermore, the width of the first base portion 210a may correspond to the clamping ring 300.

[0157] According to another embodiment of the invention, the first base portion may be disposed on either of the two opposite side surfaces of the first nozzle member.

[0158] The first nozzle component 210 can be made of various materials depending on the required conditions and design specifications. For example, the first nozzle component 210 can be made of typical metal or plastic materials.

[0159] For reference, an example has been described in embodiments of the invention where the first nozzle component 210 comprises two separable parts (nozzle body and nozzle cap). However, according to another embodiment of the invention, the first nozzle component may comprise a single part or three or more parts.

[0160] See Figure 6 The second nozzle component 220 can be located at the opposite end of the closed cylinder portion 100 (e.g., based on...). Figure 3 While supporting the right end of each clamping ring 300, the opposite end (second side clamping portion) is also supported. The second nozzle member 220 may have a nozzle hole (not shown) for connecting various types of components, such as valves and pipes.

[0161] The second nozzle component 220 may have various structures capable of supporting the clamping ring 300 simultaneously at opposite ends of the closed cylindrical portion 100. The present invention is not constrained or limited by the structure of the second nozzle component 220.

[0162] For example, the second base portion 220a may protrude from two opposite side surfaces of the second nozzle member 220, and the opposite ends (second side clamping portions) of each clamping ring 300 may be mounted on the second base portion 220a. Specifically, the second base portion 220a may be semi-circular in shape, and the opposite ends of the clamping rings 300 may be in close contact with and supported on the second base portion 220a. Furthermore, the width of the second base portion 220a may correspond to that of the clamping rings 300.

[0163] According to another embodiment of the invention, the second base portion may be disposed on either of the two opposite side surfaces of the second nozzle member.

[0164] The second nozzle component 220 can be made of various materials depending on the required conditions and design specifications. For example, the second nozzle component 220 can be made of typical metal or plastic materials.

[0165] In the embodiments of the invention shown and described above, an example has been described where the second nozzle component 220 comprises only a single part. However, according to another embodiment of the invention, similar to the first nozzle component, two or more parts (e.g., nozzle body and nozzle cap) can constitute the second nozzle component.

[0166] For reference, in the embodiments of the invention shown and described above, an example has been described in which the first nozzle member 210 and the second nozzle member 220 each have a nozzle orifice for connecting components (e.g., valves and pipes). However, according to another embodiment of the invention, only either the first nozzle member or the second nozzle member may have a nozzle orifice.

[0167] See Figure 5 According to an exemplary embodiment of the present invention, the nozzle cap 214 can move relative to the nozzle body 212 in the longitudinal direction of the barrel 100.

[0168] For example, a first threaded portion (not shown) may be provided on the outer peripheral surface of the nozzle body 212, and a second threaded portion (not shown) may be provided on the inner peripheral surface of the nozzle cover 214 and connected to the first threaded portion.

[0169] As the nozzle body 212 rotates relative to the nozzle cover 214, the nozzle cover 214 can move linearly relative to the nozzle body 212 in the longitudinal direction of the cylinder 100, so that the gap (gap in the longitudinal direction of the cylinder) G between the nozzle body 212 and the nozzle cover 214 can be adjusted.

[0170] This construction makes it easy to assemble the clamping ring 300 and firmly supports the clamping ring 300 in the installed state (the clamping ring 300 is placed on the first base portion 210a and the second base portion 220a).

[0171] That is, before the clamping ring 300 is assembled (mounted) with the first nozzle member 210 and the second nozzle member 220, the nozzle cap 214 can move toward the nozzle body 212 (moving in the direction that the nozzle cap becomes closer to the center of the barrel). When the nozzle cap 214 moves toward the nozzle body 212, the gap G between the nozzle body 212 and the nozzle cap 214 can be reduced, such that the distance between the first base portion 210a and the second base portion 220a can be reduced to a distance less than the length of the clamping ring 300 in the longitudinal direction of the barrel 100. Therefore, the opposite ends of the clamping ring 300 can be easily arranged on the first nozzle member 210 and the second nozzle member 220.

[0172] After the clamping ring 300 is fixed to the first base portion 210a and the second base portion 220a, the nozzle cover 214 can move away from the nozzle body 212 (moving in the direction that the nozzle cover becomes away from the center of the barrel). As the nozzle cover 214 moves away from the nozzle body 212, the gap G between the nozzle body 212 and the nozzle cover 214 can increase, thereby increasing the distance between the first base portion 210a and the second base portion 220a. Therefore, the clamping ring 300 can be tightened, and the clamping ring 300 can be securely maintained in the installed state.

[0173] See Figures 1 to 6 The clamping ring 300 is configured to lock the first nozzle member 210 and the second nozzle member 220 to the barrel portion 100. The clamping ring 300 is arranged in a predetermined square area 20 and positioned outside the barrel portion 100.

[0174] In this case, the configuration in which the clamping ring 300 is arranged in the square region 20 and positioned outside the cylinder 100 can mean that the clamping ring 300 is arranged in the space between the boundary of the square region 20 and the outer surface of the cylinder 100 (approximately the edge portion of the square region).

[0175] The clamping ring 300 is configured to ensure structural stiffness against the main stresses (axial stresses) applied to the liner 110 in the longitudinal direction (axial direction of the liner 110) of the stress types applied to the liner 110.

[0176] Specifically, the clamping ring 300 can expand or contract in the axial direction of the liner 110 depending on the stress (axial stress) applied in the axial direction of the liner 110.

[0177] The clamping ring 300 may have various structures capable of locking the first nozzle member 210 and the second nozzle member 220 to the barrel portion 100. The present invention is not constrained or limited by the structure of the clamping ring 300.

[0178] For example, the clamping ring 300 may include a first-side clamping portion 310, a second-side clamping portion 320, and a connecting clamping portion 330. The first-side clamping portion 310 is supported on the first nozzle member 210, the second-side clamping portion 320 is supported on the second nozzle member 220, and the connecting clamping portion 330 is configured to continuously connect the first-side clamping portion 310 and the second-side clamping portion 320. The clamping ring 300 may be provided in the form of a continuously connected ring.

[0179] The following will describe an example of a clamping ring 300 having a square cross-sectional shape.

[0180] According to an exemplary embodiment of the present invention, the first side clamping portion 310 can be in close contact with and supported on the first base portion 210a, while the second side clamping portion 320 can be in close contact with and supported on the second base portion 220a.

[0181] The clamping ring 300 can be made of various materials according to the required conditions and design specifications. The present invention is not constrained or limited by the material of the clamping ring 300.

[0182] According to an exemplary embodiment of the present invention, the clamping ring 300 may be made of at least one of reinforcing fibers, thermosetting resin or thermoplastic resin.

[0183] Below, an example of a clamping ring 300 made of carbon fiber composite material, which is a type of reinforcing fiber, will be described.

[0184] For example, the clamping ring 300 can be made by winding a carbon fiber composite material around the outer surface of a mold (jig) (not shown) using a typical winding device. The carbon fiber composite material can be made by impregnating carbon fibers with epoxy resin, thermosetting resin, etc. With the first nozzle member 210 and the second nozzle member 220 connected to opposite ends of the barrel portion 100, the clamping ring 300 can be assembled to partially surround the first nozzle member 210 (e.g., the first base portion) and the second nozzle member 220 (e.g., the second base portion).

[0185] According to another embodiment of the invention, the clamping ring 300 can be made by directly winding a carbon fiber composite material around a first nozzle member 210 (e.g., a first base portion) and a second nozzle member 220 (e.g., a second base portion).

[0186] That is, according to another embodiment of the invention, with the first nozzle member 210 and the second nozzle member 220 connected to opposite ends of the barrel portion 100, a clamping ring 300 can be provided by winding reinforcing fibers (e.g., carbon fiber composite material) to partially surround the first nozzle member 210 (e.g., the first base portion) and the second nozzle member 220 (e.g., the second base portion).

[0187] For reference, the structure of the wound carbon fiber composite material and the method of winding the carbon fiber composite material to provide the clamping ring 300 can be varied according to the required conditions and design specifications. This invention is not constrained or limited by the winding method of the carbon fiber composite material.

[0188] In the embodiments of the invention shown and described above, an example of the clamping ring 300 having a square cross-sectional shape has been described. However, the cross-sectional shape and structure of the clamping ring 300 can be varied according to desired conditions and design specifications.

[0189] See Figures 7 to 9 According to another exemplary embodiment of the present invention, the clamping ring 300 may have a circular cross-section or a non-circular cross-section.

[0190] For example, see Figure 7 The clamping ring 300 may have a circular cross-sectional shape.

[0191] As another example, see Figure 8 The clamping ring 300 can have a triangular cross-sectional shape.

[0192] As yet another example, see Figure 9 The clamping ring 300 may have a non-circular cross-sectional shape, such as a curved shape or a straight shape.

[0193] See Figure 1 and Figure 3 According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a first side plate 216 and a second side plate 226. The first side plate 216 is connected to the first base portion 210a and configured to cover the side of the first side clamping portion 310, and the second side plate 226 is connected to the second base portion 220a and configured to cover the side of the second side clamping portion 320.

[0194] By providing the first side plate 216 and the second side plate 226 as described above, it is possible to obtain the advantageous effect of suppressing the separation of the clamping ring 300 and stably maintaining the clamping ring 300 on the first base portion 210a and the second base portion 220a.

[0195] The first side plate 216 and the second side plate 226 may have various structures capable of covering the sides of the first side clamping portion 310 and the second side clamping portion 320. The present invention is not constrained or limited by the structure and shape of the first side plate 216 and the second side plate 226.

[0196] For example, the first side plate 216 may have a semi-circular shape corresponding to the first base portion 210a, and the second side plate 226 may have a semi-circular shape corresponding to the second base portion 220a.

[0197] The first side plate 216 can be fixed to the first base portion 210a by fastening members such as bolts or pins (not shown), while the second side plate 226 can be fixed to the second base portion 220a by fastening members such as bolts or pins (not shown).

[0198] For reference, an example of the second side plate 226 being coupled (assembled) to the second base portion 220a has been described in an embodiment of the invention. However, according to another embodiment of the invention, the second side plate 226 and the second nozzle member 220 may be configured as a single unit.

[0199] The first side plate 216 and the second side plate 226 can be modified in various ways in terms of materials according to the required conditions and design specifications. The present invention is not constrained or limited by the materials of the first side plate 216 and the second side plate 226.

[0200] Specifically, both the first side plate 216 and the second side plate 226 can be made of engineering plastics with excellent strength and elasticity. According to another embodiment of the invention, the first side plate and the second side plate can be made of metal or other plastic materials.

[0201] See Figures 3 to 6 According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a sealing portion 250 configured to seal the gap between the sealing cylinder portion 100 and at least one of the first nozzle member 210 or the second nozzle member 220.

[0202] Examples of sealing portions 250 being arranged in the gap between the first nozzle member 210 and the barrel 100 and in the gap between the second nozzle member 220 and the barrel 100 will be described below.

[0203] The sealing part 250 may have various structures capable of sealing the gap between the cylinder part 100 and the first nozzle member 210 (or the second nozzle member).

[0204] For example, the sealing portion 250 may include a first sealing member 252 and a second sealing member 254, the first sealing member 252 being configured to seal the gap, and the second sealing member 254 being arranged adjacent to (e.g., in close contact with) the first sealing member 252 and configured to seal the gap.

[0205] An O-ring made of an elastomer such as rubber (EPDM) can be used as the first sealing member 252. The present invention is not constrained or limited by the material and structure of the first sealing member 252.

[0206] The second sealing member 254 may be configured as a ring made of the same or similar material as the first sealing member 252. The second sealing member 254 may be arranged adjacent to the first sealing member 252 and serve as a backup ring.

[0207] According to the embodiments of the invention described above, the gap between the cylinder 100 and the first nozzle member 210 (or the second nozzle member) can be sealed by a double sealing structure achieved by the first sealing member 252 and the second sealing member 254. Therefore, advantageous effects can be obtained by improving safety and reliability and effectively suppressing leakage of fluid (e.g., hydrogen) from the gap between the cylinder 100 and the first nozzle member 210 (or the second nozzle member).

[0208] According to another embodiment of the present invention, the sealing portion may include either the first sealing member or the second sealing member.

[0209] Meanwhile, in the embodiments of the invention shown and described above, an example using only one pressure vessel 10 has been described. However, according to another embodiment of the invention, multiple pressure vessels 10 may be arranged in a single layer or multiple layers.

[0210] See Figures 10 to 18 According to an exemplary embodiment of the present invention, multiple square regions 20 may be provided, and the multiple square regions 20 may be arranged adjacent to each other to define a matrix. The cylindrical portions 100 may be arranged in the square regions 20 respectively.

[0211] In particular, the multiple square regions 20 that each contain a pressure vessel 10 can be arranged as a defined one-dimensional matrix or two-dimensional matrix according to the required conditions and design specifications.

[0212] For example, multiple square regions 20 can be arranged as a one-dimensional matrix limited to 1*n1 (where n1 is a natural number) or as a two-dimensional matrix limited to (n2+1)*(n2+1) (where n2 is a natural number equal to or greater than 1 (n2≥1)).

[0213] For example, see Figure 10At least some of the multiple pressure vessels 10 can be stacked in two layers.

[0214] For example, six pressure vessels 10 can be arranged side by side (in a 1*6 matrix) in the first layer, and three pressure vessels 10 can be arranged side by side (in a 1*3 matrix) in the second layer (arranged above the first layer), such that the first and second layers partially define a double-layer structure.

[0215] According to another embodiment of the invention, such as Figures 12 to 13 As shown, the number of pressure vessels 10 arranged in the first and second layers can be changed. The present invention is not constrained or limited by the number of pressure vessels 10 arranged in the layers respectively.

[0216] Alternatively, such as Figure 11 As shown, multiple pressure vessels 10 can be arranged in a single layer. Alternatively, as Figure 14 As shown, multiple pressure vessels 10 can be arranged in three layers.

[0217] According to another embodiment of the invention, a plurality of pressure vessels 10 (in a square region) can be arranged as a defined square matrix, wherein the number of columns is equal to the number of rows.

[0218] See Figure 1 , Figure 3 and Figure 15 According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a connecting hole 218 and a connecting member 219. The connecting holes 218 are respectively disposed in adjacent first nozzle members 210. One end of the connecting member 219 is connected to any one of the adjacent first nozzle members 210, and the opposite end is connected to the other of the adjacent first nozzle members 210.

[0219] In this context, the adjacent first nozzle member 210 can be defined as a concept that includes components in the upward / downward direction (e.g., based on...). Figure 15 The first nozzle components 210 are arranged adjacent to each other and in the left / right direction (e.g., based on) Figure 15 The first nozzle components 210 are arranged adjacent to each other.

[0220] The following will describe examples of connecting holes 218 respectively disposed on the upper surface, the bottom surface, and the two opposite side surfaces of the first nozzle member 210. Alternatively, the connecting holes may be disposed on some of the upper surface, the bottom surface, and the two opposite side surfaces of the first nozzle member.

[0221] Typical pins or bolts capable of connecting to adjacent connecting holes 218 can be used as connecting members 219. The present invention is not constrained or limited by the type and structure of the connecting member 219.

[0222] For example, a connecting member 219 configured to connect with connecting holes 218 provided in the upper and bottom surfaces of the first nozzle member 210 can be connected to the first nozzle members 210 arranged adjacent to each other in the upward / downward direction. A connecting member 219 configured to connect with connecting holes 218 provided in two opposite side surfaces of the first nozzle member 210 can be connected to the first nozzle members 210 arranged adjacent to each other in the left / right direction.

[0223] In addition, see Figure 18 According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a guide protrusion 228 and a guide groove 229. The guide protrusion 228 is disposed on either of the adjacent second nozzle members 220, and the guide groove 229 is disposed in the other adjacent second nozzle member 220 and configured to receive the guide protrusion 228 such that the guide protrusion 228 is slidable in the longitudinal direction of the cylinder 100.

[0224] For example, a guide protrusion 228 may be provided on the upper surface of the second nozzle member 220, which is arranged on the lower side of the second nozzle members 220 arranged adjacent to each other in the upward / downward direction. A guide groove 229 may be provided in the bottom surface of the second nozzle member 220, which is arranged on the upper side of the second nozzle members 220 arranged adjacent to each other in the upward / downward direction.

[0225] The guide protrusion 228 and guide groove 229 can be structurally modified according to required conditions and design specifications. For example, the guide protrusion 228 and guide groove 229 can each have a quadrilateral cross-sectional shape.

[0226] As described above, adjacent second nozzle members 220 each have a guide groove 229 and a guide protrusion 228. Therefore, when either of the adjacent barrel portions 100 expands (expands in the longitudinal direction), relative movement between the second nozzle members 220 in the longitudinal direction of the barrel portion 100 is allowed, but relative movement between the second nozzle members 220 in another direction (e.g., a direction intersecting the longitudinal direction of the barrel portion) can be suppressed.

[0227] For reference, adjacent first nozzle members 210 are fixed to each other by connecting member 219. Therefore, when either of the adjacent cylinders 100 expands, the second nozzle member 220 arranged on the expanding cylinder 100 can move linearly away from the first nozzle member 210. Conversely, when either of the adjacent cylinders 100 contracts, the second nozzle member 220 arranged on the contracting cylinder 100 can move linearly toward the first nozzle member 210.

[0228] In the embodiments of the invention shown and described above, examples have been described of adjacent second nozzle components being connected to each other via guide grooves and guide protrusions. However, according to another embodiment of the invention, adjacent second nozzle components may be connected to each other via connecting holes and connecting members.

[0229] In addition, see Figure 10 and Figures 15 to 18 According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a connecting member 230 configured to integrally connect an adjacent first nozzle member 210.

[0230] In this context, the adjacent first nozzle member 210 can be defined as a concept that includes components in the upward / downward direction (e.g., based on...). Figure 15 The first nozzle components 210 are arranged adjacent to each other and in the left / right direction (e.g., based on) Figure 15 The first nozzle components 210 are arranged adjacent to each other.

[0231] As described above, since the multiple first nozzle components 210 are connected to each other via the connecting component 230, it is possible to achieve the beneficial effect of maintaining the configuration and arrangement of the multiple pressure vessels 10 more stably and improving safety and reliability.

[0232] The connecting member 230 can have various structures capable of integrally connecting multiple first nozzle members 210. The present invention is not constrained or limited by the structure of the connecting member 230.

[0233] For example, the connecting member 230 can be configured as a straight plate having a length corresponding to the plurality of pressure vessels 10 (L * number of pressure vessels 10). The plurality of first nozzle members 210 and the connecting member 230 can be fastened by typical fastening members such as bolts or pins. According to another embodiment of the invention, the connecting member can have a "C"-shaped or "S"-shaped curved structure.

[0234] In the embodiments of the invention shown and described above, an example of connecting a plurality of first nozzle components has been described. However, according to another embodiment of the invention, the connecting member can be used to connect a plurality of second nozzle components.

[0235] See back Figure 15 and Figure 17According to an exemplary embodiment of the present invention, the pressure vessel 10 may include: a spacer 240 and an intermediate clamping ring 300', the spacer 240 being inserted between adjacent first nozzle members 210 and second nozzle members 220; the intermediate clamping ring 300' being arranged between adjacent cylindrical portions 100 and configured to partially surround adjacent first nozzle members 210, spacers 240 and adjacent second nozzle members 220.

[0236] like Figure 15 and Figure 17 As shown, when multiple pressure vessels 10 are arranged in a horizontal direction, the first side plate 216 and the second side plate 226 can be excluded (removed) from the portion between adjacent first nozzle members 210 and the portion between adjacent second nozzle members 220, and the intermediate clamping ring 300' can be placed on the adjacent first nozzle members 210, the spacer 240 and the adjacent second nozzle members 220.

[0237] As described above, since the spacer 240 is disposed between adjacent pressure vessels 10 (e.g., between adjacent first nozzle members), a predetermined space can be ensured between adjacent pressure vessels 10, which allows adjacent cylinders 100 to expand in the diametrical direction.

[0238] Furthermore, in embodiments of the present invention, the clamping rings 300 are not separately disposed on different pressure vessels 10, but can share a single intermediate clamping ring 300' as clamping rings 300 for different pressure vessels 10. Therefore, the advantageous effect of simplifying the structure can be obtained.

[0239] For example, spacer 240 may have a semi-circular shape corresponding to the first base portion 210a and the second base portion 220a. Spacer 240 may have a through hole 242 configured to be penetrated by connecting member 219.

[0240] Specifically, the width W2 of the intermediate clamping ring 300' can be determined as a value obtained by adding the width W1 of one adjacent first base portion 210a, the width Ws of the spacer 240, and the width W1 of the other adjacent first base portion 210a (W2 = W1 + Ws + W1). According to another embodiment of the invention, the width of the intermediate clamping ring can be determined as a value smaller than that obtained by adding the width of one adjacent first base portion, the width of the spacer, and the width of the other adjacent first base portion.

[0241] In addition, see Figure 1 and Figure 3According to an exemplary embodiment of the present invention, the pressure vessel 10 may include a reinforcing member 260 disposed between the cylindrical portion 100 and the clamping ring 300. The reinforcing member 260 may have a receiving groove 260a for receiving the clamping ring 300.

[0242] As described above, since the reinforcing member 260 is arranged between the cylindrical portion 100 and the clamping ring 300, it is possible to suppress damage and deformation of the cylindrical portion 100 caused by contact between the cylindrical portion 100 and the clamping ring 300, and effectively protect the cylindrical portion 100 from external impacts, etc.

[0243] The reinforcing member 260 can have various structures that allow it to be inserted between the cylindrical portion 100 and the clamping ring 300. The present invention is not constrained or limited by the structure and shape of the reinforcing member 260.

[0244] Specifically, the reinforcing member 260 can be in close contact with the outer peripheral surface of the cylindrical portion 100, thereby having a generally corrugated cross-section. The receiving groove 260a can be in close contact with the corner portion of the square region 20 (see...). Figure 2 They are arranged adjacent to each other. Therefore, with the clamping ring 300 accommodated in the receiving groove 260a, the clamping ring 300 can be positioned in the square area 20.

[0245] Although various embodiments have been described above, these embodiments are illustrative only and are not intended to limit the invention. Those skilled in the art will understand that various modifications and applications not described above can be made to the embodiments of the invention without departing from the essential characteristics of the invention. For example, the individual components specifically described in the embodiments can be modified and then implemented. Furthermore, it should be understood that differences related to modifications and applications are included within the scope of the invention as defined by the appended claims.

Claims

1. A pressure vessel, comprising: A cylindrical portion, which is arranged in a predetermined square region and has a diameter corresponding to the length of one side of the square region; A first nozzle component is arranged at one end of the cylinder; A second nozzle component is arranged at the opposite end of the cylinder; as well as Multiple clamping rings are arranged in a square region, positioned outside the cylinder, and configured to lock the first nozzle component and the second nozzle component to the cylinder. Wherein, at least one of the first nozzle component or the second nozzle component includes: Nozzle body; and The nozzle cap is configured to be movable relative to the nozzle body in the longitudinal direction of the cylinder. The clamping ring is supported on the nozzle cover. A gap is formed between the nozzle body and the nozzle cover in the longitudinal direction of the cylinder, and the gap is selectively adjusted based on the movement of the nozzle cover relative to the nozzle body.

2. The pressure vessel according to claim 1, wherein, Each clamping ring includes: The first side clamping part is supported on the first nozzle component; The second side clamping part is supported on the second nozzle component; A connecting clamping part is configured to continuously connect the first side clamping part and the second side clamping part.

3. The pressure vessel according to claim 2, further comprising: A first base portion protrudes from the side surface of the first nozzle member and is configured such that the first side clamping portion is placed on the first base portion; as well as The second base portion protrudes from the side surface of the second nozzle member and is configured such that the second side clamping portion is placed on the second base portion.

4. The pressure vessel according to claim 3, wherein, Both the first base portion and the second base portion are semi-circular in shape. The first side clamping portion is in close contact with the first base portion, and the second side clamping portion is in close contact with the second base portion.

5. The pressure vessel according to claim 3, further comprising: A first side plate is connected to the first base portion and configured to cover the side of the first side clamping portion; as well as The second side plate is connected to the second base portion and configured to cover the side of the second side clamping portion.

6. The pressure vessel according to claim 1, wherein, The square regions are configured as multiple, and the multiple square regions are arranged adjacent to each other to define a matrix, and the cylindrical parts are respectively arranged in the square regions.

7. The pressure vessel according to claim 6, wherein, The square region is arranged as a defined one-dimensional matrix or a two-dimensional matrix.

8. The pressure vessel according to claim 6, further comprising: Multiple connecting holes are respectively disposed in adjacent first nozzle components; as well as A connecting member, one end of which is connected to either of the adjacent first nozzle members, and the opposite end of which is connected to the other of the adjacent first nozzle members.

9. The pressure vessel according to claim 6, further comprising: Guide protrusions are provided on either of the adjacent second nozzle components; as well as A guide groove is provided in another adjacent second nozzle member and configured to receive the guide protrusion, such that the guide protrusion is slidable in the longitudinal direction of the barrel.

10. The pressure vessel according to claim 6, further comprising: A connecting member configured to integrally connect an adjacent first nozzle member.

11. The pressure vessel according to claim 6, further comprising: A spacer, which is inserted between adjacent first nozzle members and between adjacent second nozzle members; as well as An intermediate clamping ring is arranged between adjacent cylinders and configured to partially surround the adjacent first nozzle member, the spacer, and the adjacent second nozzle member.

12. The pressure vessel according to claim 1, further comprising: A sealing portion configured to seal the gap between the cylindrical portion and at least one of the first nozzle member or the second nozzle member.

13. The pressure vessel according to claim 12, wherein, The sealing part includes: A first sealing member, configured to seal the gap; and A second sealing member is arranged adjacent to the first sealing member and configured to seal the gap.

14. The pressure vessel according to claim 1, wherein, The clamping ring is made of at least one of reinforcing fibers, thermosetting resin or thermoplastic resin.

15. The pressure vessel according to claim 1, wherein, With the first nozzle member and the second nozzle member connected to opposite ends of the cylinder, the clamping ring is provided by winding reinforcing fibers to partially surround the first nozzle member and the second nozzle member.

16. The pressure vessel according to claim 1, wherein, With the first nozzle component and the second nozzle component connected to opposite ends of the cylinder, the clamping ring is assembled to partially surround the first nozzle component and the second nozzle component.

17. The pressure vessel according to claim 1, wherein, The diameter of the cylinder is determined to be the value between the maximum diameter of the cylinder when it is at its maximum expansion just before it bursts and the minimum diameter of the cylinder when it is in an unexpanded state.

18. The pressure vessel according to claim 1, wherein, The cylindrical portion includes: The lining, which includes storage space; and A reinforcing layer, configured to surround the outer peripheral surface of the liner, The reinforcing layer is made of at least one of reinforcing fibers, thermosetting resin, or thermoplastic resin.

19. The pressure vessel according to claim 18, comprising: A reinforcing member is arranged between the cylindrical portion and the clamping ring. The reinforcing member has a receiving groove for accommodating the clamping ring.

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