Pipe support structure

Abstract

To prevent a support body of a pipe from contacting liquefied air in a support structure of the pipe in which liquefied air is expected to be generated.SOLUTION: A pipe support structure 1 is a structure for supporting a pipe 10 through which cryogenic fluid passes. The support structure 1 includes a first support member 2 that suspends and supports the pipe 10 at two points spaced apart in a pipe axis direction F of the pipe 10, and a second support member 3 that is erected on a foundation surface BS and supports the first support member 2. The support structure 1 is a structure for further supporting the first support member 2, which suspends and supports the pipe 10, by the second support member 3. In other words, the support structure does not have any members directly below the pipe 10, the members supporting the pipe 10. Therefore, even when liquefied air LA is generated on the surface of the pipe 10, the liquefied air LA is unlikely to contact the first support member 2 and second support member 3 that support the pipe 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a support structure for piping through which a cryogenic fluid passes. [Background technology]

[0002] The support structure of Patent Document 1 is known as a support structure for piping that transports cryogenic fluids such as liquefied hydrogen. Patent Document 1 discloses a support structure that includes piping arranged above a structural member of a ship and support legs that stand upright from the structural member and support the piping. In plants and the like that handle cryogenic fluids, vacuum insulated multi-layer pipes are used for the piping, but single pipes may also be used for some branch pipes and the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-103902 Summary of the Invention [Problem to be solved by the invention]

[0004] When the cryogenic fluid being transported is a fluid that generates liquefied air, such as liquefied hydrogen, liquefied air may be generated from the surface of the piping. The generation of liquefied air is particularly pronounced when the piping is a single pipe or the like that is not thermally insulated. The liquefied air generated from the piping flows downward along the support legs where the support legs are present. In this case, for example, contact with the liquefied air can cause the support legs to become brittle at low temperatures.

[0005] An object of the present disclosure is to prevent contact of the support for a pipe with liquefied air in a support structure for the pipe where liquefied air is expected to be generated. [Means for solving the problem]

[0006] A support structure for piping according to one aspect of the present disclosure is a support structure for piping through which a cryogenic fluid passes, and includes a support frame extending in the axial direction of the piping, a first support member that suspends and supports the piping at one point or at multiple points spaced apart in the axial direction of the piping, and a second support member that is fixed to a predetermined support and supports the first support member.

[0007] A support structure for piping according to another aspect of the present disclosure is a support structure for piping through which a cryogenic fluid passes, and includes a first support material that suspends and supports the piping at multiple points spaced apart in the axial direction of the pipe, and a second support material that is fixed to a predetermined support and supports the first support material. [Effects of the Invention]

[0008] According to the present disclosure, in a support structure for a pipe where liquefied air is expected to be generated, contact of the support for the pipe with the liquefied air can be suppressed. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1(A) is a schematic diagram of a piping system including a support structure for piping according to a first embodiment of the present disclosure, and FIG. 1(B) is a cross-sectional view taken along line IB-IB of FIG. 1(A). [Figure 2] FIG. 2 is a perspective view showing a support structure for piping according to a second embodiment of the present disclosure. [Figure 3] FIG. 3 is a plan view of the support structure for piping according to the second embodiment, as viewed from the axial direction of the piping. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] 5(A) to 5(C) are diagrams for explaining the drawbacks of the pipe support structure of the comparative example, and FIG. 5(D) is a cross-sectional view showing the advantages of this embodiment. [Figure 6] FIG. 6 is a plan view of the support structure for piping according to the third embodiment, as viewed from the axial direction of the piping. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8]FIG. 8 is a plan view of the support structure for piping according to the fourth embodiment, as viewed from the axial direction of the piping. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] FIG. 10 is a view showing a support structure for piping according to the fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Various embodiments of the piping support structure according to the present disclosure will be described in detail below with reference to the drawings. The piping to be supported in the present disclosure is piping through which a cryogenic fluid passes. The cryogenic fluid is a fluid in a temperature range that liquefies the surrounding air or a fluid in a temperature range that liquefies the oxygen or nitrogen contained in the surrounding air. Examples of cryogenic fluids include liquefied hydrogen (LH2), liquid helium (LHe), and boil-off gas obtained by evaporation of these liquefied gases. The piping support structure according to the present disclosure is assembled to a predetermined support that serves as a support base. Examples of the predetermined support include the deck or frame structure of a liquefied hydrogen carrier, the ground or foundation of a hydrogen-handling plant such as a liquefied hydrogen storage facility or loading / unloading facility, and various frames such as gratings.

[0011] [First embodiment] FIG. 1(A) is a schematic diagram of a piping system 100 including a piping support structure 1 according to a first embodiment of the present disclosure, and FIG. 1(B) is a cross-sectional view taken along line IB-IB of FIG. 1(A). The piping system 100 includes a piping 10 and a support structure 1 that supports the piping 10 on a foundation surface BS. The piping 10 is a piping through which a cryogenic fluid flows. In this embodiment, the cryogenic fluid flowing through the piping 10 is hydrogen HY. The hydrogen HY may be liquefied hydrogen or boil-off gas formed by evaporation of the liquefied hydrogen.

[0012] The pipe 10 is a single pipe made of low-temperature steel such as stainless steel. In facilities that handle liquefied hydrogen, vacuum insulated multi-layer pipes are mainly used for transporting liquefied hydrogen. However, not all pipes are vacuum insulated multi-layer pipes. For example, a single pipe like the pipe 10 may be used in a branch pipe that transports boil-off gas. Gas-phase hydrogen HY, which reaches a temperature slightly higher than -253°C at atmospheric pressure, or in some cases liquid-phase liquefied hydrogen, which reaches approximately -253°C at atmospheric pressure, may flow through such pipe 10. In this case, the surface of the pipe 10 may drop to the temperature at which air liquefies.

[0013] The base surface BS is a foundation that serves as a support base for the support structure 1 and is an example of the aforementioned predetermined support. While FIG. 1(A) illustrates a flat base surface BS, the base surface BS may also be sloped or have steps. The pipe 10 is disposed above the base surface BS. The pipe 10 thermally expands and contracts due to temperature changes between when hydrogen HY is being transported and when it is not. If the pipe 10 were placed directly on the base surface BS, the movement associated with the thermal expansion would cause friction on the surface of the pipe 10, and corrosion due to moisture, etc., would occur. For this reason, the pipe 10 must be supported above the base surface BS. The base surface BS does not necessarily have to be located below the pipe 10. For example, the base surface BS may be a vertical surface or a nearly vertically inclined surface, with the pipe 10 disposed to the side of the base surface BS. Furthermore, the base surface BS is not limited in area as long as the support structure 1 can be constructed thereon. It is not limited to a large surface such as the ground, and may be a relatively small surface. Alternatively, it may be a ceiling surface or a frame that suspends the pipe 10 in the air.

[0014] The support structure 1 supports the piping 10, which is laid out along a predetermined route, in an appropriate position. FIG. 1(A) shows an example in which three support structures 1 are installed at predetermined intervals. The support structures 1 are arranged where support is needed depending on the various arrangement modes of the piping 10. The support structure 1 comprises a first support member 2, a second support member 3, and a tray 11.

[0015] The first support member 2 supports the pipe 10 by suspending it at two points spaced apart in the pipe axis direction F of the pipe 10. The first support member 2 includes a support frame 201 extending in the pipe axis direction F and suspension members 202 hanging from both ends of the support frame 201. The support frame 201 may extend strictly along the pipe axis direction F, or may be slightly tilted or curved relative to the pipe axis direction F. The first support member 2 is preferably made of a rigid, low-temperature resistant metal material, such as a low-temperature steel frame material. The distance between the two points where the first support member 2 suspends and supports the pipe 10 may be set appropriately. However, if the distance is too long, the first support member 2 is more likely to deform due to the support load. Furthermore, if the distance is too short, the advantages of two-point suspension are diminished. For example, if the pipe diameter, which is the outer diameter of the pipe 10, is used as a reference, the distance between the two points can be set within a range of approximately 2 to 10 times the pipe diameter. The "point" at which the pipe 10 is suspended and supported means the position at which the pipe is suspended and supported, and includes the case where the point has a predetermined area or width required for the suspension and support.

[0016] FIG. 1 shows an example in which the first support member 2 suspends and supports the pipe 10 at only two points. The first support member 2 may also be configured to suspend and support the pipe 10 at three or more points spaced apart from one another in the pipe axis direction F. The suspending member 202 may be connected to the pipe 10 from above in a position that prevents the liquefied air LA generated from the pipe and flowing downward from falling on the pipe 10, and may connect the support frame 201 and the pipe 10 in a position other than vertical. Alternatively, the pipe 10 may be supported by multiple suspending members 202 at one support point.

[0017] The second support member 3 includes a portion fixed to the base surface BS as a predetermined support, and supports the first support member 2. In the example shown in FIG. 1(B), the second support member 3 has a gate-like shape consisting of a pair of support columns 301 and a horizontal beam 302 suspended between the upper ends of the support columns 301. The pair of support columns 301 are erected on the base surface BS. The second support member 3 can be formed, for example, by assembling steel frame members into a gate shape. The second support member 3 is installed in a manner that allows the piping 10 to be accommodated in the gate opening between the pair of support columns 301. The first support member 2 is supported by the horizontal beam 302 at the center position in the width direction W of the horizontal beam 302.

[0018] The length in the height direction H of the second support member 3, i.e., the height of the support columns 301, is appropriately set depending on the diameter of the pipe 10, the hanging length of the first support member 2, the required spacing of the pipe 10 from the foundation surface BS, and other factors. The length in the width direction W of the second support member 3, i.e., the width of the horizontal beam 302, is appropriately set based on the diameter of the pipe 10 and other factors. When hydrogen HY flows through the pipe 10, liquefied air LA may be generated from the surface of the pipe 10. It is desirable to set the length in the width direction W of the second support member 3 so that this liquefied air LA is not scattered as much as possible. While FIG. 1(B) illustrates the second support member 3 in the form of a rectangular gate, the second support member 3 may also be shaped as a gate with an arc-shaped horizontal beam 302 or a gate with a pair of tilted support columns 301. The second support member 3 may also be a gate with a truss-structured support column 301, a cantilever-type gate with only one support column 301, or the like. The tube axis direction F, height direction H, and width direction W are each perpendicular to the other two directions.

[0019] The tray 11 is a tray that receives the liquid generated on the surface of the pipe 10, i.e., the liquefied air LA. The tray 11 is disposed below the pipe 10 between a pair of supports 301. The tray 11 may be supported by a support member erected on the foundation surface BS, or may be supported by the second support member 3 or the pipe 10 itself. There are no restrictions on the shape of the tray 11, as long as it has an opening for receiving the liquefied air LA and a volume capable of storing a predetermined amount of liquefied air LA. The arrangement of the tray 11 can prevent the liquefied air LA hanging down from the pipe 10 from scattering into the surrounding area and the low-temperature embrittlement of surrounding structures that may result from the scattering.

[0020] The support structure 1 for a pipe 10 according to the first embodiment has a structure in which the first support member 2, which supports the pipe 10 in a suspended manner, is further supported by the second support member 3. In other words, this support structure does not have any components supporting the pipe 10 directly below the pipe 10. Therefore, even if liquefied air LA is generated on the surface of the pipe 10, the liquefied air LA is unlikely to come into contact with the first support member 2 and the second support member 3 supporting the pipe 10. This prevents low-temperature embrittlement of the support members for the pipe 10 caused by the liquefied air LA. Furthermore, the first support member 2 supports the pipe 10 at two points spaced apart in the pipe axis direction F. Therefore, even if the pipe 10 thermally expands or contracts, vertical displacement of the pipe 10 is prevented, and the pipe 10 can be stably supported.

[0021] [Second embodiment] Next, more specific embodiments will be described. Fig. 2 is a perspective view showing a piping support structure 1A according to a second embodiment of the present disclosure. Fig. 3 is a plan view of the support structure 1A as viewed from the pipe axis direction F. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. The support structure 1A includes a first support member 2A, a second support member 3A, an insulating block 4, a lateral vibration suppression unit 5, and a tray 11. Note that the tray 11 is only shown in Fig. 3.

[0022] As in the first embodiment, the first support member 2A suspends and supports the pipe 10 at two points spaced apart in the pipe axis direction F, and the second support member 3A supports the first support member 2A. The first support member 2A is supported movably in the pipe axis direction F. The insulating block 4 is an insulating material arranged on the first support member 2A by the second support member 3A. The insulating block 4 suppresses the transfer of cold and heat from the first support member 2A to the second support member 3A. The lateral vibration suppression unit 5 connects the pipe 10 and the second support member 3A and suppresses vibration in the width direction W of the pipe. Note that "connect" includes a mode in which the pipe 10 and the second support member 3A are mechanically connected, and a mode in which the unit is interposed in the space between them without being connected. The tray 11 receives liquefied air LA generated on the surface of the pipe 10. Each part will be described in detail below.

[0023] The first support member 2A includes a first frame 21, a second frame 22, and a connecting frame 23 made of low-temperature steel or the like. In cases such as when the pipe 10 has a large diameter, multiple first support members 2A may be arranged side by side in the width direction W. The first frame 21 and the second frame 22 are arranged at a predetermined interval from each other in the pipe axis direction F and both extend in the height direction H, i.e., the up-and-down direction. Note that the first frame 21 and the second frame 22 do not have to extend perpendicular to the pipe axis direction F as shown in the figure, and may be inclined. The first frame 21 and the second frame 22 are flat, elongated frames extending in the height direction H. The plane directions of the flat plates are the height direction H and the width direction W. There are no limitations on the shape or material of the first frame 21 and the second frame 22 as long as they can withstand the load hanging from the pipe 10.

[0024] The first frame 21 supports and suspends the pipe 10 at a first point P1. The first frame 21 includes a lower end 211 and an upper end 212. The lower end 211 is welded to the first point P1 of the pipe 10. The upper end 212 has a through-hole that passes through the first frame 21 in the pipe axis direction F. The second frame 22 supports and suspends the pipe 10 at a second point P2 that is spaced apart from the first point P1 in the pipe axis direction F. The second frame 22 includes a lower end 221 and an upper end 222. The lower end 221 is welded to the second point P2 of the pipe 10. The upper end 222 has a through-hole that passes through the first frame 21 in the pipe axis direction F.

[0025] The connecting frame 23 extends horizontally in the pipe axis direction F and connects the first frame 21 and the second frame 22. The connecting frame 23 is also a member supported by the second support member 3A via the insulating block 4. The connecting frame 23 is made of a pipe with a circular cross section. There are no restrictions on the cross-sectional shape of the connecting frame 23 as long as it is a rod-shaped member, and it may be a hollow member with a rectangular or polygonal cross section, or a solid member.

[0026] The connecting frame 23 includes a first end 231, which is one end of the connecting frame 23, and a second end 232, which is the other end. The first end 231 is inserted through the through hole at the upper end 212 of the first frame 21. The second end 232 is inserted through the through hole at the upper end 222 of the second frame 22. The first end 231 is welded to the first frame 21 at the position of the through hole, and the second end 232 is welded to the second frame 22 at the position of the through hole. As described above, the first support member 2A is welded to the piping 10 at the lower ends 211 and 221 of the frames 21 and 22, and welded to the connecting frame 23 at the upper ends 212 and 222, thereby forming a strong structure. This structure contributes to the construction of a strong and stable support structure 1A. Note that the first end 231 and the second end 232 may be simply inserted through the through holes without being welded. Furthermore, it is sufficient that the lower ends 211, 221 of the frames 21, 22 are fixed to the pipe 10, and the fixing method is not limited to welding.

[0027] The second support member 3A slidably supports the connecting frame 23 near the center of the connecting frame 23 in the pipe axis direction F. The second support member 3A includes a first vertical beam 31, a second vertical beam 32, and a horizontal beam 33 formed of L-shaped steel. The first vertical beam 31 and the second vertical beam 32 correspond to the support columns 301 shown in FIG. 1(B), and the horizontal beam 33 corresponds to the horizontal beam 302. The first vertical beam 31 and the second vertical beam 32 are erected from a base surface BS at a predetermined interval in the width direction W and both extend perpendicularly in the height direction H. The base surface BS is only shown in FIG. 3. The first vertical beam 31 and the second vertical beam 32 may be inclined relative to the vertical direction. The horizontal beam 33 extends in the width direction W and connects the first vertical beam 31 and the second vertical beam 32. The connecting frame 23 of the first support member 2A is supported by the horizontal beam 33.

[0028] The first vertical beam 31 includes a base 311 at its lower end in the height direction H and an upper portion 312 at its upper end. Similarly, the second vertical beam 32 includes a base 321 and an upper portion 322. The bases 311 and 321 are in contact with the foundation surface BS. The bases 311 and 321 can be placed on the foundation surface BS or embedded in the foundation surface BS. The upper portion 312 of the first vertical beam 31 and the upper portion 322 of the second vertical beam 32 are connected by a horizontal beam 33. The horizontal beam 33 may be disposed below the upper portions 312 and 322. The second support member 3A is formed into a gate-type structure by the first vertical beam 31, the second vertical beam 32, and the horizontal beam 33. This creates space below the piping 10. This space can be used to easily place accessories such as trays 11.

[0029] The insulation block 4 is placed on the upper surface 33T of the horizontal beam 33 at the center position in the width direction of the horizontal beam 33. The insulation block 4 is made of an insulating material formed, for example, of GFRP (glass fiber reinforced plastic) and has a rectangular parallelepiped shape. The connecting frame 23 is placed on the upper surface 41 of the insulation block 4. No fixing measures are provided between the upper surface 41 and the connecting frame 23. The upper surface 41 may have elasticity that allows it to be depressed into a concave shape due to the support load of the piping 10. A stopper may be provided to restrict the movement of the connecting frame 23 to prevent it from moving excessively in the pipe axis direction F. In this case, the stopper does not restrict the movement of the connecting frame 23 within the range of normal thermal contraction of the piping 10, but it is a stopper that restricts irregular and excessive movement, such as that caused by an earthquake.

[0030] A first locking member 34W and a second locking member 34F, which serve as mounting seats for the insulation block 4, are attached to the upper surface 33T of the horizontal beam 33. The first locking members 34W are a pair of locking members that sandwich the insulation block 4 in the width direction W. The second locking members 34F are a pair of locking members that sandwich the insulation block 4 in the pipe axis direction F. The first locking members 34W and the second locking members 34F restrict movement of the insulation block 4 in the width direction W and the pipe axis direction F. The upper surface 41 of the insulation block 4 is located higher than the upper edges of the first locking member 34W and the second locking member 34F. Note that the attachment of the insulation block 4 is not limited to this, and the insulation block 4 may be fixed to the horizontal beam 33 by fastening or the like. Alternatively, a recess may be formed in the horizontal beam 33, and the insulation block 4 may be placed inside the recess.

[0031] The lateral vibration suppression unit 5 includes a clamp 51, a right restricting member 52R, and a left restricting member 52L. Here, "left" and "right" simply represent the left and right sides in FIG. 3 for ease of explanation and do not limit the orientation of the lateral vibration suppression unit 5. The clamp 51 is a fixed part for the pipe 10 and is attached to the outer periphery of the pipe 10. The left restricting member 52L and the right restricting member 52R extend from the clamp 51 in the width direction W and have contact parts with the second support member 3A. The left restricting member 52L and the right restricting member 52R are formed of a heat insulating material such as GFRP. In this embodiment, the lateral vibration suppression unit 5 uses the pipe 10 as a support base. The lateral vibration suppression unit 5 may also use the second support member 3A as a support base.

[0032] The right restricting member 52R includes one end 521 adjacent to the right side of the pipe 10 and the other end 522 facing the receiving surface 313, which is the inner surface of the first vertical beam 31. The left restricting member 52L includes one end 521 adjacent to the left side of the pipe 10 and the other end 522 facing the receiving surface 323, which is the inner surface of the second vertical beam 32. The clamp 51 includes an upper clamp piece 51A attached to the upper surface of the pipe 10, a lower clamp piece 51B attached to the lower surface of the pipe 10, and a fastening member 511. The fastening member 511 is, for example, a bolt.

[0033] One ends 521 of the right and left restricting members 52R and 52L are held by clamps 51. The piping 10 and one end 521 are sandwiched between the upper clamp piece 51A and the lower clamp piece 51B. The left and right flange portions of the upper clamp piece 51A and the lower clamp piece 51B are fastened with a pair of fastening members 511. This fastening clamps the one ends 521 and creates a state in which the right and left restricting members 52R and 52L are supported by the piping 10. When lateral vibration occurs in the width direction W of the piping 10, the other ends 522 come into contact with the right receiving surface 313 or the left receiving surface 323, thereby restricting the lateral vibration.

[0034] Instead of the above-described embodiment, the lateral vibration suppression unit 5 may have the following embodiment. The right restricting member 52R and the left restricting member 52L may be configured as a single member. For example, a restricting member having a through-hole for the pipe 10 in the center in the width direction W and having both ends abutting against the receiving surfaces 313, 323 can be exemplified. Such a restricting member may be split into upper and lower halves, and the pipe 10 may be sandwiched and fastened between them. Examples of fastening members include clamps, fastening wires, and fastening belts. The lateral vibration suppression unit 5 may also have a restricting member hanging down from the horizontal beam 33.

[0035] The tray 11 is disposed below the piping 10 between the first vertical beam 31 and the second vertical beam 32. The tray 11 receives the liquefied air LA that drips from the piping 10. The liquefied air LA temporarily stored in the tray 11 eventually evaporates. The arrangement of the tray 11 can prevent the liquefied air LA from scattering. A drain pipe that actively discharges the liquefied air may be attached to the tray 11. In this case, it is desirable that the bottom surface of the tray 11 slopes downward toward the installation position of the drain pipe.

[0036] The support structure 1A of the second embodiment is a structure in which the first support material 2A and the second support material 3A that support the pipe 10 are not present directly below the pipe 10. Therefore, even if liquefied air LA is generated on the surface of the pipe 10, contact between the liquefied air LA and the first support material 2A and the second support material 3A can be suppressed. Therefore, low-temperature embrittlement of the first support material 2A and the second support material 3A due to the liquefied air LA can be suppressed.

[0037] FIG. 5(A) is a diagram showing a support structure for a pipe 10 of a comparative example. Generally, when the pipe 10 is installed so as to be raised above the foundation surface BS, a flat pipe shoe 12 is attached to the bottom of the pipe 10. The pipe shoe 12 is supported by a pipe support 13 erected upright from the foundation surface BS. With such a support structure, liquefied air LA generated on the surface of the pipe 10 flows by gravity along the pipe shoe 12 and then along the pipe support 13 toward the foundation surface BS. In this case, low-temperature embrittlement may occur in the pipe shoe 12 and the pipe support 13. According to the support structure 1A of this embodiment, the first support member 2A and the second support member 3A are not present in the outflow direction of the liquefied air LA, thereby suppressing the problem of low-temperature embrittlement.

[0038] Furthermore, according to the support structure 1A, the first support member 2A supports the pipe 10 at two points, a first point P1 and a second point P2, which are spaced apart in the pipe axis direction F. This two-point support can suppress up-and-down shaking of the pipe 10 due to thermal expansion and contraction. Figures 5(B) and 5(C) are diagrams showing support structures of other comparative examples. In order to solve the problem of low-temperature embrittlement in the pipe shoe 12 and pipe support 13 as shown in Figure 5(A), it is possible to consider supporting the pipe 10 by hanging it. Figure 5(B) shows a support structure in which the pipe 10 is supported by a single hanging support member 14 hanging from a hanging surface BA at each location where support is required for the pipe 10.

[0039] If the pipe 10 is simply supported at one point, as in the example of FIG. 5(B), contact between the liquefied air LA and the support material of the pipe 10 can be avoided. However, if the pipe 10 undergoes thermal expansion and contraction, the pipe 10 may be displaced in the vertical direction. Specifically, as shown in FIG. 5(C), if the length of the pipe 10 changes due to thermal expansion and contraction, the pipe 10 may undergo circular motion around the support point of the hanging support member 14. As a result of the circular motion, the pipe 10 is displaced in the vertical direction. This displacement may cause an unintended force to act on the pipe 10.

[0040] FIG. 5(D) is a diagram schematically illustrating the behavior of the pipe 10 during thermal expansion and contraction when the support structure 1A of the second embodiment is adopted. According to the support structure 1A, when the pipe 10 thermally expands and contracts, the first support member 2A also moves in the pipe axis direction F. That is, the first support member 2A can slide relative to the second support member 3A. Furthermore, the first support member 2A is connected to the pipe 10 at two points spaced apart in the pipe axis direction F. Therefore, when thermal expansion and contraction displacement of the pipe 10 occurs in the pipe axis direction F, the first support member 2A slides on the second support member 3A in the pipe axis direction F. As a result, vertical displacement of the pipe 10 is suppressed.

[0041] The first support member 2A has a simple configuration consisting of a combination of three frames: a first frame 21, a second frame 22, and a connecting frame 23, and has a rectangular frame structure in a side view. This makes it easy to form a first support member 2A with excellent rigidity. In addition, the connecting frame 23 slides relative to the second support member 3A. This allows the first support member 2A to move relative to the second support member 3A while suppressing stress applied to the first frame 21 and the second frame 22 that suspend and support the piping 10.

[0042] The presence of the insulating block 4 suppresses heat conduction from the first support material 2A to the second support material 3A. As described above, it also suppresses the liquefied air LA from falling on the second support material 3A. Furthermore, it is possible to prevent cold heat that would generate liquefied air LA from being transferred to the connecting frame 23 over the length of the first frame 21 and the second frame 22. Therefore, it is possible to suppress the generation of liquefied air LA in the connecting frame 23. This eliminates the need to use expensive low-temperature resistant steel for the second support material 3A.

[0043] The provision of the lateral vibration suppression portion 5 can suppress lateral vibration in the width direction W of the pipe 10. The left restricting member 52L and the right restricting member 52R utilize the pipe 10 as a base material for fixing. Furthermore, the use of clamps 51 makes it easy to attach the left restricting member 52L and the right restricting member 52R to the pipe 10. This makes it easy to install the lateral vibration suppression portion 5. Furthermore, the left restricting member 52L and the right restricting member 52R are heat insulating members, so they can suppress the transfer of cold and heat from the pipe 10 to the second support member 3A.

[0044] Another member may be interposed at least one between the other end 522 of the right restriction member 52R and the receiving surface 313 of the first vertical beam 31, or between the other end 522 of the left restriction member 52L and the receiving surface 323 of the second vertical beam 32. Fig. 4 shows an example in which the width of the right restriction member 52R in the tube axis direction F is the same as the width of the first vertical beam 31 in the tube axis direction F. An embodiment in which the width of the right restriction member 52R in the tube axis direction F is wider than the first vertical beam 31, and the receiving surface 313 is substantially extended in the tube axis direction F, may also be adopted. The same applies to the left restriction member 52L.

[0045] [Third embodiment] FIG. 6 is a plan view of a pipe support structure 1B according to the third embodiment, as seen from the pipe axis direction F. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. The third embodiment shows an example in which a pipe 10 is movable relative to a first support member 2. The support structure 1B includes a first support member 2B, a second support member 3B, and a lateral vibration suppression unit 5. The configurations of the second support member 3B and the lateral vibration suppression unit 5 are the same as those in the second embodiment, and therefore detailed description thereof will be omitted here. Furthermore, although not shown in FIGS. 6 and 7, a tray 11 may be disposed below the pipe 10.

[0046] The first support member 2B includes a first frame 21B, a second frame 22B, and a connecting frame 23B. The first frame 21B and the second frame 22B are frames that support the pipe 10 at two points and are arranged at a predetermined distance from each other in the pipe axis direction F. The connecting frame 23B extends horizontally in the width direction W and connects the first frame 21B and the second frame 22B. The basic configuration of the first support member 2B described above is the same as that of the first support member 2A of the second embodiment.

[0047] The first frame 21B and the second frame 22B each include a hanging frame piece 24, a holding material 25, a connecting portion 26, and a connecting clamp 27. The hanging frame piece 24 is a longitudinal frame in the height direction H, and hangs down from the connecting frame 23B. For example, the hanging frame piece 24 has a flat plate shape. The holding material 25 is attached to the outer periphery of the piping 10 at two support points of the piping 10. The connecting portion 26 connects the holding material 25 and the hanging frame piece 24 so as to be movable in the pipe axis direction F. The connecting clamp 27 connects the hanging frame piece 24 and the connecting frame 23B.

[0048] The retaining material 25 includes a pair of clamp pieces 251, an upper fastening member 261, and a lower fastening member 262. The pair of clamp pieces 251 clamp the piping 10 from the sides. An elongated hole 252 that is long in the pipe axis direction F is drilled in the upper flange portion of the clamp piece 251. A circular hole 253 is drilled in the lower flange portion of the clamp piece 251. The upper fastening member 261 fastens the upper flange portions of the pair of clamp pieces 251 together through the elongated hole 252. The lower fastening member 262 fastens the lower flange portions of the pair of clamp pieces 251 together through the circular hole 253.

[0049] The connecting portion 26 is composed of the elongated holes 252 of the clamp pieces 251 and the upper fastening member 261. The upper fastening member 261 passes through the elongated holes 252 of each of the pair of clamp pieces 251 and an opening 241 provided near the lower end of the hanging frame piece 24. The opening 241 may be a screw hole that screws into the upper fastening member 261, or it may be a simple through-hole. Because the connecting portion between the upper fastening member 261 and the clamp piece 251 is the elongated hole 252, the clamp piece 251 can move along the longitudinal direction of the elongated hole 252. In other words, the holding material 25 attached to the piping 10 can move in the pipe axis direction F relative to the hanging frame piece 24.

[0050] The connecting clamps 27 are attached to the first end 231 and the second end 232 of the connecting frame 23B, respectively. The connecting clamps 27 include a pair of clamp pieces 271, an upper fastening member 272, and a lower fastening member 273. The pair of clamp pieces 271 sandwich the connecting frame 23B from the sides. The upper fastening member 272 fastens the upper flange portions of the pair of clamp pieces 271 together, and the lower fastening member 273 fastens the lower flange portions together. Stoppers 233 protrude from the first end 231 and the second end 232 of the connecting frame 23B, respectively. The stoppers 233 prevent the connecting frame 23B from slipping out of the connecting clamps 27.

[0051] The support structure 1B of the third embodiment does not include the insulating block 4 used in the second embodiment. Specifically, the connecting frame 23B is placed directly on the upper surface 33T of the horizontal beam 33 of the second support member 3B. The degree of heat transfer from the first support member 2B to the second support member 3B varies depending on the length of the height direction H of the first frame 21B and the second frame 22B. When the length of the height direction H of the hanging frame piece 24 is sufficiently long, the cold heat received from the piping 10 is dissipated to a certain extent through heat exchange between the hanging frame piece 24 and the atmosphere. Furthermore, the hanging frame piece 24 is not directly attached to the piping 10 by welding, but is attached to the piping 10 via the upper fastening member 261 and the clamp piece 251. This suppresses heat transfer from the piping 10 to the hanging frame piece 24. This eliminates the need for an insulating material between the upper surface 33T of the horizontal beam 33 and the connecting frame 23B.

[0052] According to the support structure 1B of the third embodiment, the connecting portion 26 connects the holding member 25 and the hanging frame piece 24 so that the holding member 25 can move in the pipe axis direction F. The hanging frame piece 24 is interposed between the pipe 10 and the connecting frame 23B. Heat dissipation occurs in the hanging frame piece 24, resulting in a temperature difference between the pipe 10 and the connecting frame 23B. This temperature difference causes a difference in the amount of thermal expansion and contraction of the pipe 10 between the support points of the first frame 21B and the second frame 22B and the amount of thermal expansion and contraction of the connecting frame 23B. The connecting portion 26 has an elongated hole 252 and an upper fastening member 261 that can move within the elongated hole 252. Therefore, if a difference occurs between the displacement of the pipe 10 and the displacement of the connecting frame 23B due to thermal expansion and contraction, the upper fastening member 261 moves within the elongated hole 252. This reduces stress caused by the difference in the amount of thermal expansion and contraction between the pipe 10 and the connecting frame 23B.

[0053] Furthermore, the support structure 1B has a structure in which the retaining material 25 and the hanging frame piece 24 are connected by the connecting portion 26. Therefore, the first frame 21B and the second frame can be attached to the piping 10 without welding. Therefore, it is possible to omit non-destructive testing of the piping 10, which would be necessary if welding were performed.

[0054] The third embodiment can be modified as follows. The lower end of the hanging frame piece 24 may have a bifurcated structure, and the clamp piece 251 of the holding material 25 may be clamped and supported. A member corresponding to the holding material 25 may be fixed to the outer surface of the pipe 10 by welding or the like, and the member may be connected to the hanging frame piece 24 so as to be movable in the pipe axis direction F. In order to reliably suppress heat transfer from the pipe 10 to the horizontal beam 33, a heat insulating material may be interposed between the upper surface 33T of the horizontal beam 33 and the connecting frame 23B.

[0055] [Fourth embodiment] Fig. 8 is a plan view of a pipe support structure 1C according to a fourth embodiment, as seen from the pipe axis direction F. Fig. 9 is a cross-sectional view taken along line IX-IX in Fig. 8. The support structure 1C of the fourth embodiment is suitable for supporting large-diameter pipes 10W. The support structure 1C includes a first support member 2C, a second support member 3C, and a lateral vibration suppression portion 5C.

[0056] The first support member 2C has a structure in which each support point supports two points in the circumferential direction of the piping 10W. This is to distribute the support load of the large-diameter piping 10W. The first support member 2C includes a first frame 21C and a second frame 22C that support the piping 10 at two points spaced apart in the pipe axis direction F, and a connecting frame 23C. To support the piping at two points in the circumferential direction, the first support member 2C is divided into a right first support member 2C1 and a left first support member 2C2. Figure 9 shows a side view of the right first support member 2C1.

[0057] The first frame 21C and the second frame 22C each include a right hanging frame piece 24R and a left hanging frame piece 24L, one clamp 6, a right connecting portion 26R and a left connecting portion 26L, and a right connecting clamp 27R and a left connecting clamp 27L. The connecting frame 23C includes a right connecting frame 23R for the right first support member 2C1 and a left connecting frame 23L for the left first support member 2C2.

[0058] The large clamp 6 corresponds to the retaining member 25 of the third embodiment and is attached to the outer periphery of the large-diameter pipe 10W. The large clamp 6 includes a first clamp piece 61R, a second clamp piece 61L, and a third clamp piece 61T, which are assembled to surround the large-diameter pipe 10W in an annular shape. The first clamp piece 61R covers the right side of the large-diameter pipe 10W. The second clamp piece 61L covers the left side of the large-diameter pipe 10W. The first clamp piece 61R and the second clamp piece 61L each have a first flange 611 at their upper ends and a second flange 612 at their lower ends. The third clamp piece 61T covers the large-diameter pipe 10W between the right connecting portion 26R and the left connecting portion 26L. The third clamp piece 61T has a third flange 613 at its right end and a fourth flange 614 at its left end.

[0059] The lower end of the right hanging frame piece 24R is sandwiched between the first flange 611 of the first clamp piece 61R and the third flange 613 of the third clamp piece 61T. A first fastening member 63 passes through the first flange 611 and the third flange 613 and the right hanging frame piece 24R, fastening the flanges together. The lower end of the left hanging frame piece 24L is sandwiched between the first flange 611 of the second clamp piece 61L and the fourth flange 614 of the third clamp piece 61T, fastening the flanges together. A second fastening member 64 passes through the first flange 611 and the fourth flange 614 and the left hanging frame piece 24L, fastening the flanges together. A third fastening member 65 fastens the second flanges 612 of the first clamp piece 61R and the second clamp piece 61L.

[0060] The first flange 611, the third flange 613, and the fourth flange 614 of the right connecting portion 26R and the left connecting portion 26L have elongated holes 252. The first fastening member 63 and the second fastening member 64 pass through the elongated holes 252. Therefore, the large clamp 6 can move in the pipe axis direction F within the range of the elongated holes 252.

[0061] The upper end of the right hanging frame piece 24R is attached to the right connecting frame 23R by a right connecting clamp 27R. The upper end of the left hanging frame piece 24L is attached to the left connecting frame 23L by a left connecting clamp 27L. The right connecting clamp 27R and the left connecting clamp 27L each include a pair of clamp pieces 274, an upper fastening member 275, and a lower fastening member 276. The pair of clamp pieces 274 sandwich the right connecting frame 23R or the left connecting frame 23L from the sides. The upper fastening member 275 fastens the upper ends of the pair of clamp pieces 274 together. The lower fastening member 276 fastens the lower ends of the pair of clamp pieces 274 together, with the upper end of the right hanging frame piece 24R or the left hanging frame piece 24L sandwiched between them.

[0062] The second support member 3C includes a first vertical beam 31, a second vertical beam 32, and a horizontal beam 33. The right connecting frame 23R and the left connecting frame 23L are placed on the upper surface 33T of the horizontal beam 33. The first frame 21C is movable in the pipe axis direction F while being supported by the second frame 22C. The lengths of the first vertical beam 31 and the second vertical beam 32 in the height direction H can be set as appropriate. Figure 8 assumes that a groove is provided below the large-diameter pipe 10W and that other supports are present at the lower ends of the first vertical beam 31 and the second vertical beam 32.

[0063] The lateral vibration suppression unit 5C includes a clamp 510, and a right restricting member 520R and a left restricting member 520L held by the clamp 510. The clamp 510 is attached to the large-diameter pipe 10W. The right restricting member 520R can abut against the inner surface of the first vertical beam 31, and the left restricting member 520L can abut against the inner surface of the second vertical beam 32. The right restricting member 520R and the left restricting member 520L suppress vibration of the large-diameter pipe 10W in the width direction.

[0064] According to the support structure 1C of the fourth embodiment, the first support member 2C includes two connecting frames 23C per support point: a right connecting frame 23R and a left connecting frame 23L. Therefore, even if the supported object is a heavy, large-diameter pipe 10W, it can be stably supported without using a large-diameter connecting frame. The right connecting clamp 27R and the left connecting clamp 27L may be loosened to allow the right connecting frame 23R and the left connecting frame 23L to roll laterally. Furthermore, three or more connecting frames may be used per support point.

[0065] The following modifications of the fourth embodiment are possible. The lower ends of the hanging frame pieces 24R, 24L may be bifurcated to sandwich and support the first flanges 611 of the holding materials 25R, 25L. Members corresponding to the clamp pieces 61R, 61L, 61T may be welded to the outer peripheral surface of the pipe 10, and these members may be connected to the hanging frame pieces 24R, 24L so as to be movable in the pipe axis direction F. In order to reliably suppress heat transfer from the pipe 10W to the horizontal beam 33, a heat insulating material may be interposed between the upper surface 33T of the horizontal beam 33 and the connecting frames 23R, 23L.

[0066] [Fifth embodiment] FIG. 10 is a side view showing a support structure for piping according to a fifth embodiment. The support structure of the fifth embodiment includes a first support member 2D and a pair of second support members 3-1 and 3-2. The first support member 2D is a support member that suspends and supports the piping 10 at one point and includes a support frame 23D and a hanger 24D. The support frame 23D extends in the pipe axis direction F. The hanger 24D extends downward from the center of the support frame 23D in the pipe axis direction F. The lower end of the hanger 24D is attached to the piping 10 by welding or a fastener. Note that FIG. 10 shows an example in which the first support member 2D suspends and supports the piping 10 at one point. However, the first support member 2D may include multiple hangers 24D, suspending and supporting the piping at two or more points spaced apart from each other in the pipe axis direction F.

[0067] A pair of second support members 3-1 and 3-2 are erected on the base surface BS at a predetermined distance in the pipe axis direction F. The pair of second support members 3-1 and 3-2 support the support frame 23D at two points sandwiching the hanger member 24D. The support frame 23D is supported from below by the upper ends of the second support members 3-1 and 3-2 and is movable in the pipe axis direction F. In other words, when the pipe 10 thermally expands or contracts, the first support member 2D can move in the pipe axis direction F. Note that three or more second support members may be arranged in the pipe axis direction F to support the support frame 23D. According to the fifth embodiment, the first support member 2D suspends and supports the pipe 10, but the pair of second support members 3-1 and 3-2 support the support frame 23D at at least two points sandwiching the hanger member 24D. Therefore, vertical displacement of the pipe 10 due to thermal expansion or contraction can be suppressed.

[0068] Summary of this disclosure The specific embodiments described above include disclosures having the following configurations. The following configurations may be combined as appropriate, or some of them may be replaced with other configurations.

[0069] A support structure for piping according to a first aspect of the present disclosure is a support structure for piping through which a cryogenic fluid passes, and includes a support frame extending in the axial direction of the piping, a first support member that suspends and supports the piping at one point or at multiple points spaced apart in the axial direction of the piping, and a second support member that is fixed to a predetermined support and supports the first support member.

[0070] According to the first aspect, the structure includes a first support member that suspends and supports the pipe, and a second support member that further supports the first support member. In other words, this is a support structure in which there is no support member directly below the pipe. Therefore, even if liquefied air is generated on the surface of the pipe, it is easy to realize a support structure in which the liquefied air does not come into contact with the support member of the pipe. Furthermore, by using a support frame extending in the pipe axis direction, the pipe can be suspended and supported in a variety of support modes, and the support mode of the first support member by the second support member can also be diversified. If the pipe is simply supported at one point, when the pipe thermally expands or contracts, the pipe will circularly move around the support point and displace vertically. Support by the support frame can suppress vertical displacement of the pipe due to thermal expansion or contraction.

[0071] A support structure for piping according to a second aspect is the support structure of the first aspect, wherein the first support member is suspended and supported at only two points spaced apart in the axial direction of the pipe.

[0072] According to the second aspect, the pipe is suspended and supported at two points spaced apart in the pipe axis direction, so that stable support of the pipe can be easily achieved despite the simple structure.

[0073] The support structure for piping of the third aspect is the support structure of the first aspect, in which the first support material suspends and supports the piping with a hanging material extending downward from the support frame, and the second support material supports the support frame at at least two points sandwiched between the hanging material.

[0074] According to the third aspect, the first support member suspends and supports the pipe, while the second support member supports the support frame at at least two points across the suspension member, thereby suppressing vertical displacement of the pipe due to thermal expansion and contraction.

[0075] A support structure for piping according to a fourth aspect is the support structure of the first aspect, wherein the first support member is supported so as to be movable in the axial direction of the pipe relative to the second support member.

[0076] When the pipe thermally expands or contracts in the pipe axial direction, a moving force acts on the first support member that suspends and supports the pipe, similarly moving the first support member in the pipe axial direction. According to the fourth aspect, when the moving force acts, the first support member can move in the pipe axial direction relative to the second support member. Therefore, the restraining force acting on the pipe during thermal expansion or contraction can be reduced.

[0077] A support structure for piping according to a fifth aspect is a support structure according to any one of the first to fourth aspects, wherein the first support member includes a first frame extending in the vertical direction and suspending and supporting a first point of the piping, a second frame extending in the vertical direction and suspending and supporting the piping at a second point spaced apart from the first point in the pipe axis direction, and a connecting frame serving as the support frame extending horizontally and connecting the first frame and the second frame, and the second support member slidably supports the connecting frame.

[0078] According to the fifth aspect, a structure suitable for two-point suspension of piping can be simply realized by combining three frames: a first frame, a second frame, and a connecting frame. Furthermore, a rectangular frame structure is formed by the piping between the first and second points and the three frames. Therefore, it is easy to form a first support member with excellent rigidity. Furthermore, the connecting frame slides relative to the second support member. Therefore, the first support member can be moved relative to the second support member while suppressing stress applied to the first and second frames that suspend and support the piping.

[0079] A piping support structure according to a sixth aspect is the support structure of the fifth aspect, wherein the first frame and the second frame each have a through hole at their upper end, and the connecting frame is a rod-shaped member having one end and the other end fixed to the first frame and the second frame while inserted into the through hole.

[0080] According to the sixth aspect, the connecting frame is inserted into the through-holes of the first frame and the second frame, and has fixing portions for fixing to these frames, so that the first support member has a strong structure, and thus a strong support structure can be realized.

[0081] A seventh aspect of the support structure for piping is the support structure of the fifth aspect, wherein the first frame and the second frame each have a retaining material attached to the outer periphery of the piping, a hanging frame piece hanging down from the connecting frame, and a connecting portion that connects the retaining material and the hanging frame piece so that they can move in the axial direction of the pipe.

[0082] According to the seventh aspect, the connecting portion movably connects the holding material and the hanging frame piece. Because the hanging frame piece is interposed between the piping and the connecting frame, a temperature difference occurs between the two. Due to this temperature difference, the amount of thermal expansion and contraction of the piping between the first point and the second point differs from the amount of thermal expansion and contraction of the connecting frame. By providing a connecting portion that movably connects the holding material and the hanging frame piece, stress due to the difference in the amount of thermal expansion and contraction between the two can be alleviated.

[0083] The piping support structure of the eighth aspect is a support structure of the first to seventh aspects, in which the second support material includes a first vertical beam and a second vertical beam spaced apart from each other and erected from the support body, and a horizontal beam connecting the top of the first vertical beam and the top of the second vertical beam, and the first support material is supported by the horizontal beam.

[0084] According to the eighth aspect, a portal-shaped second support member can be constructed using a first vertical beam, a second vertical beam, and a horizontal beam. Therefore, the first support member can be stably supported. Furthermore, the portal-shaped structure makes it easy to create space below the piping. Therefore, the space can be used to place accessories.

[0085] A piping support structure according to a ninth aspect is the support structure of the eighth aspect, further comprising a tray positioned below the piping between the first vertical beam and the second vertical beam, for receiving liquid generated on the surface of the piping.

[0086] According to the ninth aspect, the liquefied air dripping from the pipe can be received by the tray, thereby preventing the liquefied air from scattering on the surface of the pipe and suppressing the scattering.

[0087] The piping support structure of the tenth aspect is a support structure of any of the first to ninth aspects, further comprising an insulating material that is arranged in the support portion of the first support material by the second support material and that suppresses heat transfer from the first support material to the second support material.

[0088] According to the tenth aspect, the heat transfer of cold from the first support member supporting the piping to the second support member and the predetermined support member can be suppressed by the presence of the heat insulating material.

[0089] A support structure for piping according to an eleventh aspect is the support structure of any of the first to tenth aspects, further comprising a lateral vibration suppression part connecting the piping and the second support member.

[0090] According to the eleventh aspect, the pipe and the second support member are connected by the lateral vibration suppressing portion, so that lateral vibration of the pipe in a direction perpendicular to the pipe axis direction can be suppressed.

[0091] The piping support structure of the 12th aspect is the support structure of the 11th aspect, in which the lateral vibration suppression portion includes a fixed portion for the piping and a regulating member extending from the fixed portion and having an abutment portion for the second support member.

[0092] According to the twelfth aspect, the restricting member can be disposed between the pipe and the second support member, using the pipe as a base material for fixing, thereby facilitating the construction of the lateral vibration suppressing portion.

[0093] A piping support structure according to a thirteenth aspect is the support structure of the twelfth aspect, wherein the fixing portion is a clamp attached to the outer periphery of the piping, and the regulating material is an insulating member having one end held by the clamp and the other end abutting the second support material.

[0094] According to the thirteenth aspect, since the fixing portion is a clamp, it is easy to attach it to the pipe. Also, since the restricting member is a heat insulating member, it is possible to suppress the transfer of cold heat from the pipe to the second support member.

[0095] The support structure for piping according to the fourteenth aspect is a support structure for piping through which a cryogenic fluid passes, and comprises a first support material that suspends and supports the piping at multiple points spaced apart in the axial direction of the pipe, and a second support material that is fixed to a predetermined support and supports the first support material.

[0096] According to the fourteenth aspect, the pipe is suspended and supported by a first support member, which is further supported by a second support member. This makes it easy to realize a support structure that prevents liquefied air from coming into contact with the support member for the pipe. Furthermore, the first support member supports the pipe at multiple points spaced apart in the pipe axis direction. This makes it possible to suppress vertical displacement of the pipe due to thermal expansion and contraction. [Explanation of symbols]

[0097] 1, 1A, 1B, 1C Piping support structure 10 Piping 11 Tray 2, 2A, 2B, 2C 1st support material 21, 21B, 21C 1st frame 22, 22B, 22C 2nd frame 23, 23B, 23C Connecting frame (support frame) 201, 23D support frame 231 First end (one end) 232 Second end (other end) 24 Hanging frame piece 25 Holding material 26 Connecting part 3, 3A, 3B, 3C 2nd support material 31 1st vertical beam 32 Second vertical beam 33 horizontal beam 4. Insulation block (insulation material) 5 Lateral vibration suppression part 51 Clamp (fixed part) 52L, 52R Left regulation material, Left regulation material (regulation material) 521 one end 522 Other end (contact part) BS Base surface (specified support) F Tube axis direction H Hydrogen (cryogenic fluid) P1, P2 1st point, 2nd point

Claims

1. A support structure for a pipe through which a cryogenic fluid passes, a first support member having a support frame extending in a pipe axis direction of the pipe, and suspending and supporting the pipe at one point or at multiple points spaced apart in the pipe axis direction; A second support member fixed to a predetermined support member and supporting the first support member; A piping support structure comprising:

2. The piping support structure according to claim 1, A support structure for a pipe, in which the first support member is suspended and supported at only two points spaced apart in the pipe axis direction.

3. The piping support structure according to claim 1, The first support member supports the piping by suspending it with a suspending member extending downward from the support frame, A piping support structure in which the second support material supports the support frame at at least two points sandwiching the hanging material.

4. The piping support structure according to claim 1, A support structure for piping, wherein the first support member is supported so as to be movable in the axial direction of the pipe relative to the second support member.

5. The piping support structure according to claim 1, The first support material is a first frame extending in the vertical direction and suspending and supporting a first point of the piping; a second frame extending in a vertical direction and suspending and supporting the pipe at a second point spaced apart from the first point in the pipe axis direction; a connecting frame as the support frame, extending horizontally and connecting the first frame and the second frame, The second support member slidably supports the connecting frame, forming a support structure for piping.

6. The piping support structure according to claim 5, the first frame and the second frame each have a through hole at an upper end thereof, The connecting frame is a rod-shaped member having one end and the other end fixed to the first frame and the second frame while being inserted into the through hole, in a piping support structure.

7. The piping support structure according to claim 5, A support structure for piping, wherein the first frame and the second frame each have a retaining material attached to the outer periphery of the piping, a hanging frame piece hanging down from the connecting frame, and a connecting portion that connects the retaining material and the hanging frame piece so that they can move in the axial direction of the pipe.

8. The piping support structure according to any one of claims 1 to 7, the second support member includes a first vertical beam and a second vertical beam spaced apart from each other and erected from the support body, and a horizontal beam connecting an upper portion of the first vertical beam and an upper portion of the second vertical beam, A piping support structure, wherein the first support material is supported by the horizontal beam.

9. The piping support structure according to claim 8, The support structure for the piping further comprises a tray positioned below the piping between the first vertical beam and the second vertical beam, for receiving liquid generated on the surface of the piping.

10. The piping support structure according to any one of claims 1 to 7, A piping support structure further comprising an insulating material arranged at a portion of the first support material supported by the second support material, the insulating material suppressing heat transfer from the first support material to the second support material.

11. The piping support structure according to any one of claims 1 to 7, The pipe support structure further includes a lateral vibration suppression portion connecting the pipe and the second support material.

12. The piping support structure according to claim 11, A support structure for a pipe, wherein the lateral vibration suppression portion includes a fixed portion for the pipe and a regulating member extending from the fixed portion and having an abutment portion for the second support member.

13. The piping support structure according to claim 12, A piping support structure in which the fixing portion is a clamp attached to the outer circumference of the piping, and the regulating material is an insulating member having one end held by the clamp and the other end abutting the second support material.

14. A support structure for a pipe through which a cryogenic fluid passes, a first support member that suspends and supports the pipe at a plurality of points spaced apart in the pipe axis direction; A second support member fixed to a predetermined support member and supporting the first support member; A piping support structure comprising:

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