Tube for transportation system

Abstract

A tube for a transportation system, according to the present disclosure, comprises: a first pipe having a first cut portion of which the width in the vertical direction perpendicular to the lengthwise direction is gradually reduced along the lengthwise direction; and a second pipe having a second cut portion having a shape corresponding to the first cut portion. The first pipe and the second pipe are coupled such that the first cut portion and the second cut portion face each other.

Description

Tubes for transport systems

[0001] The present invention relates to a tube for a transportation system, which is an ultra-high-speed means of transportation, and more particularly, to an economical method for manufacturing a branch structure of a tube for a transportation system.

[0002] Typically, ultra-high-speed train systems exceeding 300 km / h face two challenges depending on speed: designing an aerodynamic vehicle to reduce exponentially increasing air resistance, and introducing a magnetic levitation system to reduce friction between the vehicle and the track.

[0003] However, since the introduction of the Hyperloop Alpha Concept in 2012, which introduced an ultra-high-speed vacuum tube (hyperloop) that introduced a state of 0.001 atm, the level of the stratosphere 50 km above the ground, into a sealed tube, various attempts have been made to actually implement the system.

[0004] In these attempts, it is important to implement a tube structure that can maintain a sub-vacuum state of 0.001 atm in the infrastructure, which accounts for more than 50% of the initial investment cost, although the system that floats and propels the system electromagnetically and mechanically is also important.

[0005] In order to reduce frictional resistance, which is one of the driving resistances, a magnetic levitation system is used inside the tube. Since magnetic levitation is maintained by suction, it is very important to maintain a constant gap between the guide rail and the driving body by periodically and precisely converting the attractive and repulsive forces of the magnetic field.

[0006] In particular, there are instances where changing paths is necessary under high-speed conditions, and the high-speed branching structure of the tube is extremely challenging. The vehicle must travel at high speeds while maintaining a vacuum, and to achieve this, it must maintain allowable deformation under various loads.

[0007] The sub-vacuum condition within the tube can be easily solved by increasing the thickness of the tube cross-section to secure additional rigidity, but to ensure economic efficiency, the increase in thickness must be minimized and the reinforcement materials must be placed appropriately.

[0008] High-speed branch tubes for Hyperloop must maintain the vehicle's speed while branching in a manner similar to that shown in Figure 1. A single straight tube gradually grows in size and ultimately splits into two tubes, and must remain sealed to maintain a vacuum.

[0009] If the specifications of a straight tube, which are optimized for the design diameter and span length, are directly applied to a branch tube structure with increasing size, excessive sagging and excessive stress will occur, requiring structural changes.

[0010] One aspect of the present disclosure is to provide a tube for an improved transportation system.

[0011] According to one embodiment of the present disclosure, a tube for a transportation system may be provided, including a first pipe including a first cut portion having a width gradually decreasing in a vertical direction perpendicular to the longitudinal direction along the longitudinal direction, and a second pipe including a second cut portion having a shape corresponding to the first cut portion, wherein the first pipe and the second pipe are coupled such that the first cut portion and the second cut portion face each other.

[0012] The cross-sectional shape of one end of the first pipe, in which the width in the vertical direction of the first cut portion is the greatest, may be provided in an arc shape, and the cross-sectional shape of the other end of the first pipe may be provided in a circular shape.

[0013] The cross-sectional shape of one end of the second pipe, in which the width in the vertical direction of the second cut portion is the greatest, may be provided in an arc shape, and the cross-sectional shape of the other end of the second pipe may be provided in a circular shape.

[0014] One end of the first pipe and one end of the second pipe may form one inlet, and the other end of the first pipe and the other end of the second pipe may form a first outlet and a second outlet, respectively.

[0015] The first pipe and the second pipe may each include a plurality of reinforcing members provided on the outer surface thereof.

[0016] The above plurality of reinforcing members may be provided in a T-shape or an I-shape.

[0017] The above first incision and the above second incision can be formed after the installation of the plurality of reinforcing parts.

[0018] The first pipe and the second pipe may be provided so that their interiors can maintain a sub-vacuum.

[0019] The plurality of reinforcing members may be arranged to be spaced apart along the longitudinal direction and may include circumferential reinforcing members formed along the circumferential direction of the first pipe and the second pipe.

[0020] The above plurality of reinforcing members may include longitudinal reinforcing members extending along the longitudinal direction of the first pipe and the second pipe.

[0021] According to the idea of ​​the present disclosure, a branch structure of a high-speed tube can be provided that is simple to manufacture and economical because the branch is manufactured based on a circular pipe.

[0022] According to the idea of ​​the present disclosure, a branch structure of a high-speed tube with improved stress and displacement distribution effects compared to the conventional one can be provided.

[0023] Figure 1 is a drawing showing a conventional binocular-shaped branch structure.

[0024] Figure 2 is a drawing showing the stress distribution of the branch hole of Figure 1.

[0025] FIG. 3 is a plan view showing a tube forming a branch port of a transport system according to one embodiment of the present disclosure.

[0026] FIG. 4 is a perspective view illustrating a tube for a transport system of a second part according to one embodiment of the present disclosure.

[0027] FIG. 5 is a perspective view of a tube for a transport system of a second part according to one embodiment of the present disclosure, viewed from another direction.

[0028] FIG. 6 is a plan view illustrating a tube for a transport system of a second part according to one embodiment of the present disclosure.

[0029] FIG. 7 is an exploded perspective view illustrating a tube for a transport system of a second part according to one embodiment of the present disclosure.

[0030] FIG. 8 is an exploded perspective view illustrating a tube of a first part according to one embodiment of the present disclosure.

[0031] FIG. 9 is a drawing illustrating a stress distribution of a tube for a transportation system according to one embodiment of the present disclosure.

[0032] Figure 10 illustrates the actual cutting process in the pipe longitudinal direction and diagonal direction in the pipe cutting process.

[0033] FIG. 11 illustrates a cutting process after pipe reinforcement for manufacturing a cross section of a branch hole according to one embodiment of the present disclosure.

[0034] FIG. 12 illustrates a cross-section pipe cutting process of a branch according to one embodiment of the present disclosure.

[0035] FIG. 13 is a cross-sectional view of a cut portion having an improved angle for welding according to one embodiment of the present disclosure.

[0036] Figure 14 illustrates a completed branch assembly according to one embodiment of the present disclosure. The branch assembly is shown assembled with a reinforcing member.

[0037] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0038] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0039] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expressions unless the context clearly indicates otherwise. In this specification, the terms “comprise” or “have” and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0040] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0041] Meanwhile, the terms “upper”, “lower”, etc. used in the description below are defined based on the drawing, and the shape and position of each component are not limited by these terms.

[0042] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0043] Fig. 1 is a drawing showing a conventional binocular-shaped branch structure, and Fig. 2 is a drawing showing the stress distribution of the branch hole of Fig. 1.

[0044] High-speed branch tubes for Hyperloop must branch while maintaining the vehicle's speed. They typically begin as a single straight tube, gradually increasing in size until they eventually split into two tubes. They must remain sealed to maintain a vacuum.

[0045] If the specifications of a straight tube, which are optimized for the design diameter and span length, are directly applied to a branch tube structure with increasing size, excessive sagging and excessive stress will occur, requiring structural changes.

[0046] As a single linear section grows larger, it branches out and eventually separates into two linear sections.

[0047] Since the circular cross-section applied to one linear section must include two linear sections, the final cross-section of the branch section becomes more than twice as large, and as the cross-section becomes larger, the cross-sectional rigidity must increase to resist the main loads, such as bending and vacuum load.

[0048] The best way to resist vacuum load is to maintain a circular shape, and an elliptical shape can be considered.

[0049] Additionally, as shown in Fig. 1, a binocular shape can be considered by using a method of accommodating two tube lines by making the sides semicircular and gradually increasing the upper and lower widths.

[0050] To produce this cross-section, both sides (1, 2) are made into semicircles by bending the plate, and the upper and lower surfaces are made into trapezoidal shapes by cutting the plate (3) into trapezoidal shapes and gluing them together to change the cross-section from a circle to a binocular shape, and then are separated into two circles again to form a line.

[0051] This flat, oval-shaped branch tube structure can be seen to generate high levels of stress in the flat section, as shown in Fig. 2. This requires multiple circumferential and longitudinal reinforcements.

[0052] FIG. 3 is a plan view showing a tube forming a branch port of a transport system according to one embodiment of the present disclosure.

[0053] Referring to FIG. 3, a tube (10) for a transportation system according to one embodiment of the present disclosure may be installed in a branch section of a transportation system route. The branch section of a transportation system route may be configured in a form in which parts A and B on the left and right sides of a single circular tube branch from part 1 (part 1) to part 2 (part 2).

[0054] The tube (10) for the transportation system may be designed to maintain a sub-vacuum. The tube (10) for the transportation system may be configured as a hyperloop, which is an ultra-high-speed vacuum tube in which a vehicle moves in a space where a low pressure is formed inside.

[0055] A tube (10) for a transportation system can be made by cutting a circular pipe in three dimensions to correspond to changes in cross-section (circle, oval, lying figure 8, separated circle) in the longitudinal direction (X) that occur at a branching portion.

[0056] FIG. 4 is a perspective view illustrating a tube for a transport system of a second part according to an embodiment of the present disclosure, FIG. 5 is a perspective view illustrating a tube for a transport system of a second part according to an embodiment of the present disclosure when viewed from another direction, FIG. 6 is a plan view illustrating a tube for a transport system of a second part according to an embodiment of the present disclosure, and FIG. 7 is an exploded perspective view illustrating a tube for a transport system of a second part according to an embodiment of the present disclosure.

[0057] Referring to FIGS. 4 to 7, a tube (10) for a transportation system includes a first pipe (20) including a first cut portion (21) whose width gradually decreases in a vertical direction (Z) perpendicular to the longitudinal direction (X) along the longitudinal direction (X), and a second pipe (30) including a second cut portion (31) having a shape corresponding to the first cut portion (21), and the first pipe (20) and the second pipe (30) can be combined such that the first cut portion (21) and the second cut portion (31) face each other.

[0058] The first pipe (20) may be formed as a circular pipe, and the first cut portion (21) may be formed by cutting the circular pipe in a diagonal direction.

[0059] The cross-sectional shape of one end (22) of the first pipe (20) may be provided in an arc shape, and the cross-sectional shape of the other end (23) of the first pipe (20) may be provided in a circular shape.

[0060] The width (W1) of the first cut portion (21) in the vertical direction (Z) can gradually increase as it goes toward one end (22) of the first pipe (20). At one end (22) of the first pipe (20), the width (W1) of the first cut portion (21) can be formed to its maximum.

[0061] The second pipe (30) may be formed as a circular pipe, and the second cut portion (31) may be formed by cutting the circular pipe diagonally. The second cut portion (31) may be formed in a shape corresponding to the first cut portion (21).

[0062] The cross-sectional shape of one end (32) of the second pipe (30) may be provided in an arc shape, and the cross-sectional shape of the other end (33) of the second pipe (30) may be provided in a circular shape.

[0063] The width (W1) of the second cut portion (31) in the vertical direction (Z) can gradually increase as it goes toward one end (32) of the second pipe (30). At one end (32) of the second pipe (30), the width (W1) of the second cut portion (31) can be formed to its maximum.

[0064] The first pipe (20) and the second pipe (30) can be joined to each other in a state where the first cut portion (21) and the second cut portion (31) are arranged to face each other.

[0065] Specifically, as illustrated in FIG. 13, the first edge (21a) of the first cut portion (21) of the first pipe (20) and the second edge (31a) of the second cut portion (31) of the second pipe (30) are welded together while in contact with each other, so that the first pipe (20) and the second pipe (30) can be joined to each other.

[0066] The first edge (21a) of the first cut portion (21) and the second edge (31a) of the second cut portion (31) may have an improvement angle set for welding convenience. That is, the first edge (21a) and the second edge (31a) may have a cut surface formed to have an improvement angle.

[0067] When the first pipe (20) and the second pipe (30) are combined, one end (22) of the first pipe (20) and one end (32) of the second pipe (30) can form one inlet (40), and the other end (23) of the first pipe (20) and the other end (33) of the second pipe (30) can form a first outlet (41) and a second outlet (42), respectively.

[0068] A tube (10) for such a transportation system may have a branching section formed at the intersection (43) of the first pipe (20) and the second pipe (30). When the first pipe (20) and the second pipe (30) meet obliquely, a cross-section in the shape of a figure 8 may be formed, and ultimately, a single circular linear tube (24, 34) may be formed.

[0069] That is, the tube (10) for the transportation system cannot maintain a circular shape in the section where the branching begins, but forms an oval shape, then gradually takes on a figure-8 shape, and then can be separated into individual, independent circular linear tubes (24, 34) as the central portion is separated.

[0070] A tube (10) for a transportation system may include a plurality of reinforcing parts (50). The first cut part (21) and the second cut part (31) may be formed after the plurality of reinforcing parts (50) are installed.

[0071] The plurality of reinforcing members (50) may include a steel beam having a cross-section of I-type or T-type. If the profile of the reinforcing member (50) is T-type, the reinforcing effect is the best compared to the cross-sectional area of ​​the reinforcing member (50), but the manufacturing difficulty increases. If the profile of the reinforcing member (50) is I-type, the reinforcing effect is somewhat lower than that of the T-type, but the manufacturing difficulty increases.

[0072] The plurality of reinforcing members (50) may include longitudinal reinforcing members (51) installed along the longitudinal direction (X) of the tube (10) and circumferential reinforcing members (52) installed along the circumferential direction of the tube (10).

[0073] The longitudinal reinforcement (51) can be installed in an area other than the circular linear tube (24, 34). The circular linear tube (24, 34) does not require a separate reinforcement because the circular cross-section itself has sufficient rigidity.

[0074] A longitudinal reinforcement (51) can be installed to reinforce a portion of the tube (10) where two circular linear tubes (24, 34) meet and are joined. The longitudinal reinforcement (51) can reinforce a portion of the tube (10) where the cut portions (21, 31) of the first pipe (20) and the second pipe (30) are formed.

[0075] The longitudinal reinforcement (51) can reinforce the reduction in rigidity of the cross-section of the tube (10) where the first pipe (20) and the second pipe (30) are joined, changing from a circular shape to an oval shape and a lying figure-8 tube.

[0076] The circumferential reinforcement (52) is arranged to be spaced apart along the longitudinal direction (X) of the first pipe (20) and the second pipe (30), and can be formed to extend along the circumferential direction of the first pipe (20) and the second pipe (30).

[0077] The circumferential reinforcements (52) can be spaced apart at predetermined intervals along the longitudinal direction (X) of the tube (10). The circumferential reinforcements (52) can be spaced apart at a first interval in the circular linear tube (24, 34), and can be spaced apart at a second interval smaller than the first interval in an area excluding the linear tube (24, 34).

[0078] A plurality of circumferential reinforcements (52) spaced apart at a second interval can reinforce the reduction in rigidity of the cross-section of the tube (10) where the first pipe (20) and the second pipe (30) are joined, changing from a circular shape to an elliptical shape and a lying figure-8 tube.

[0079] The tube (10) for this transportation system is simple and economical to manufacture because the branch section is manufactured based on a circular pipe.

[0080] In addition, the tube (10) for the transportation system is manufactured by leaving the circular pipe intact even in the branch hole, so the weight of the material is also reduced.

[0081] Furthermore, as shown in Fig. 9, the tube (10) for the transportation system exhibits superior stress and displacement distribution effects compared to the conventional method. Specifically, as shown in Fig. 2, the conventional (flat oval) branch hole generates a high level of stress in the flat section member. To achieve this, multiple circumferential and longitudinal reinforcements are required.

[0082] On the other hand, as shown in Fig. 9, in the branch section of the proposed method, the stress in the main member is maintained at a low level, indicating that the circumferential reinforcement is working efficiently.

[0083] In addition, low-level displacement control (typically less than 5 mm) is important for the driving stability of the internal driving body, and the proposed method can efficiently use the cross-section.

[0084] FIG. 8 is an exploded perspective view illustrating a tube of a first part according to one embodiment of the present disclosure.

[0085] As illustrated in Fig. 8, the tube (10) of the first part also has the same configuration, except that the cut portions (61, 71) are formed along the entire length direction (X) of the pipe (60, 70). That is, the width (W1) of the cut portions (61, 71) in the vertical direction (Z) can gradually increase as it goes toward one end (62, 72) of the pipe (60, 70). At one end (62, 72) of the pipe (60, 70), the width (W1) of the cut portions (61, 71) can be formed to its maximum.

[0086] Figure 10 illustrates the actual cutting process in the pipe longitudinal direction and diagonal direction in the pipe cutting process.

[0087] FIG. 11 illustrates a cutting process after pipe reinforcement for manufacturing a cross section of a branch hole according to one embodiment of the present disclosure.

[0088] Referring to Fig. 11, the manufacturing process of the branch hole intersection is illustrated step by step. If the reinforcing materials (51, 52) are installed first and then cut, residual deformation can be controlled in advance, effectively controlling residual deformation that would otherwise occur if cutting were done without the reinforcing materials (51, 52). Since the reinforcing materials (51, 52) are necessary anyway, it may be advantageous to install them in advance.

[0089] FIG. 12 illustrates a cross-section pipe cutting process of a branch according to one embodiment of the present disclosure.

[0090] When cutting pipe at a branch intersection, the angle of the cut surface should be adjusted in advance to ensure that the cut surface has a good angle for future welding. Since the cutting is done in three dimensions, the CAD connection cutting method is used.

[0091] When cutting a pipe (20) to form a cut portion (21), an internal reinforcing material (70) is installed near the cut portion (21) and then the cutting process is performed.

[0092] The internal reinforcement (70) may be spaced apart at a predetermined interval along the length of the pipe (20). The internal reinforcement (70) may have a length extending in the radial direction of the pipe (20). By performing a cutting operation of the pipe (20) after the internal reinforcement (70) is installed, deformation of the pipe (20) occurring during the cutting process can be prevented.

[0093] When cutting a pipe (20) at a branch intersection, as shown in Fig. 13, adjust the angle of the edges (21a, 31a), which are the cutting surfaces, in advance so that the cut portion has an improved angle for future welding. Since cutting is done in three dimensions, a CAD connection cutting method is used.

[0094] Figure 14 illustrates a completed branch assembly according to one embodiment of the present disclosure. The branch assembly is shown assembled with a reinforcing member.

[0095] Referring to Fig. 14, two pipes (20, 30) that have formed cut portions (21, 31) are joined with the cut portions (21, 31) facing each other and in contact, thereby finally producing a branch structure.

[0096] When joining two pipes (21, 31), they meet at a very small angle, making external handling difficult, so it is advantageous to handle (weld) primarily from the inside.

[0097] At this time, if the two pipes (20, 30) are joined without removing the internal reinforcement (70) after cutting the pipes (20, 30), the two pipes (20, 30) can be joined simply without any additional deformation problems. In addition, by installing reinforcements (51, 52) on the outer surfaces of the pipes (20, 30) before removing the internal reinforcement (70) after joining, residual deformation that may occur after removing the internal reinforcement (70) can be suppressed in advance.

[0098] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A first pipe including a first cut portion whose width gradually decreases in the vertical direction perpendicular to the longitudinal direction along the longitudinal direction; and A second pipe including a second cut portion having a shape corresponding to the first cut portion; A tube for a transportation system in which the first pipe and the second pipe are connected so that the first cut portion and the second cut portion face each other.

2. In paragraph 1, The cross-sectional shape of one end of the first pipe, which has the maximum width in the vertical direction of the first cut portion, is provided in the shape of an arc. A tube for a transportation system in which the cross-sectional shape of the other end of the first pipe is provided in a circular shape.

3. In paragraph 2, The cross-sectional shape of one end of the second pipe, which has the maximum width in the vertical direction of the second cut portion, is provided in the shape of an arc. A tube for a transportation system in which the cross-sectional shape of the other end of the above second pipe is provided in a circular shape.

4. In paragraph 3, A tube for a transport system, wherein one end of the first pipe and one end of the second pipe form one inlet, and the other end of the first pipe and the other end of the second pipe form a first outlet and a second outlet, respectively.

5. In paragraph 1, A tube for a transportation system, wherein the first pipe and the second pipe each include a plurality of reinforcing members provided on the outer surface thereof.

6. In paragraph 5, A tube for a transportation system in which the above plurality of reinforcing parts are provided in a T-shape or an I-shape.

7. In paragraph 5, The above first cut portion and the above second cut portion are a tube for a transportation system formed after the installation of the plurality of reinforcing parts.

8. In paragraph 1, A tube for a transportation system in which the first pipe and the second pipe are provided so that the inside thereof can maintain a sub-vacuum.

9. In paragraph 5, A tube for a transportation system, wherein the plurality of reinforcing members are spaced apart along the longitudinal direction and include a circumferential reinforcing member formed along the circumferential direction of the first pipe and the second pipe.

10. In paragraph 5, A tube for a transportation system, wherein the plurality of reinforcing members include longitudinal reinforcing members extending along the longitudinal direction of the first pipe and the second pipe.

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