vessel

Abstract

A ship includes a hull, a tank provided to the hull and having a cylindrical shape with an axis extending in a horizontal direction, and a tank support portion provided to the hull and supporting the tank, the tank support portion having a plurality of saddles extending in a circumferential direction along an outer peripheral surface of a lower portion of the tank and provided separately in an axial direction in which the axis extends, and as the plurality of saddles, one fixed saddle supporting the tank so as not to be movable in the axial direction and a plurality of sliding saddles supporting the tank so as to be movable in the axial direction.

Description

Technical Field

[0001] This invention relates to a ship.

[0002] This application claims priority based on Japanese Patent Application No. 2023-204048, filed on December 1, 2023, the contents of which are incorporated herein by reference. Background Technology

[0003] Patent document 1 discloses a structure that supports a cylindrical storage tank with an axis extending in the horizontal direction for storing LNG fuel by a pair of saddles arranged axially spaced apart.

[0004] Previous technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2022-29967 Summary of the Invention

[0007] The technical problem to be solved by the invention

[0008] However, for example, if the storage tank is enlarged, the weight of the stored contents increases, thus increasing the load exerted by the tank on the pair of saddles. Furthermore, even when storing heavier materials, the load exerted by the tank on the pair of saddles also increases. Therefore, if the load exerted by the tank on the pair of saddles increases, the reaction force exerted by the saddles on the tank also increases.

[0009] In contrast, increasing the strength of the storage tank to resist the stress exerted on it by the reaction force of the saddle would lead to an increase in the tank's weight and material costs. Therefore, the structure described in Patent Document 1 may hinder the development of larger storage tanks and the storage of heavier items.

[0010] The present invention was made to solve the above-mentioned problems, and its object is to provide a ship that reduces the reaction force from the saddle and enables the storage tank to be large-scale and to handle the storage of heavy materials.

[0011] means for solving technical problems

[0012] To address the aforementioned issues, the present invention relates to a vessel comprising a hull, a storage tank, and a storage tank support. The storage tank is disposed on the hull and is cylindrical with an axis extending horizontally. The storage tank support is disposed on the hull and supports the storage tank. The storage tank support has multiple saddles. These multiple saddles extend circumferentially along the lower outer peripheral surface of the storage tank and are spaced apart axially along the axis extending from the horizontally extending axis. Among the multiple saddles, one is a fixed saddle and multiple are sliding saddles. The fixed saddle supports the storage tank so that it cannot move along the axial direction. The multiple sliding saddles support the storage tank so that it can slide along the axial direction.

[0013] Invention Effects

[0014] The ship according to the present invention can provide a ship that reduces the reaction force from the saddle and can cope with the large size of the storage tank, the storage of heavy materials, etc. Attached Figure Description

[0015] Figure 1 This is a side view of the ship involved in the embodiments of the present invention.

[0016] Figure 2 This is a side view showing the storage tank and storage tank support according to an embodiment of the present invention.

[0017] Figure 3 This is a diagram showing the fixed saddle according to an embodiment of the present invention viewed from the axial direction.

[0018] Figure 4 yes Figure 3 AA-direction sectional view.

[0019] Figure 5 This is a diagram showing the sliding saddle according to an embodiment of the present invention viewed from the axial direction.

[0020] Figure 6 yes Figure 5 BB-direction sectional view.

[0021] Figure 7 This is a cross-sectional view showing the sliding saddle according to the second embodiment of the present invention.

[0022] Figure 8 This is a cross-sectional view showing the sliding saddle according to the first variation of the second embodiment of the present invention.

[0023] Figure 9 This is a diagram showing the sliding saddle according to the third embodiment of the present invention viewed from the axial direction.

[0024] Figure 10This is a cross-sectional view showing the sliding saddle according to the fourth embodiment of this embodiment. Detailed Implementation

[0025] <First Implementation>

[0026] The following is for reference. Figures 1-10 The ships involved in the embodiments of the present invention will be described.

[0027] (The overall structure of the ship)

[0028] like Figure 1 As shown, the ship 1 in this embodiment has at least a hull 2 ​​and a storage tank equipment 10.

[0029] As for ships 1, examples include transport ships carrying liquefied gases such as carbon dioxide, liquefied natural gas (LNG), and ammonia, cargo ships, ferries, RORO ships (Roll-on / Roll-off ships), PCTC (Pure Car & Truck Carrier), passenger ships, observation / survey ships, etc.

[0030] (Structure of the ship's hull)

[0031] The hull 2 ​​has a pair of sidewalls 3A and 3B forming its outer shell, a bottom 4, and an upper deck 5. Sidewalls 3A and 3B have a pair of sidewall platings forming the port and starboard sides, respectively. The bottom 4 has a bottom plating connecting these sidewalls 3A and 3B. In the hull 2, for example, a superstructure 7 with a living area is formed on the upper deck 5 on the stern 2b side.

[0032] (Structure of storage tank equipment)

[0033] Figure 2 This is a side view showing the storage tank and storage tank support according to an embodiment of the present invention.

[0034] like Figure 1 , Figure 2 As shown, the storage tank equipment 10 includes at least a storage tank 11 and a storage tank support 20A.

[0035] The storage tank 11 is capable of storing liquids. Examples of liquids stored in the storage tank 11 include liquefied gases such as carbon dioxide, liquefied natural gas (LNG), and ammonia. In this embodiment, the storage tank 11 is housed, for example, within the hull 2. The storage tank 11 in this embodiment can, for example, store liquids that serve as fuel for burners in main engines, auxiliary engines, generator engines (not shown), etc., housed within the hull 2.

[0036] like Figure 1As shown, in this first embodiment, for example, two storage tanks 11 (storage tank equipment 10) are arranged along the bow-stern direction FA within the hull 2. Furthermore, there are no limitations on the number or arrangement of the storage tanks 11, and they can be appropriately modified. For example, the storage tanks 11 can be located on the upper deck 5 or in other positions.

[0037] like Figure 2 As shown, each storage tank 11 is a cylindrical container having an axis O extending in the horizontal direction. In this first embodiment, the axis O of each storage tank 11 extends along the bow-stern direction FA. Each storage tank 11 includes a cylindrical portion 11a and a mirror plate portion 11b.

[0038] A cylindrical portion 11a is provided at the middle of the storage tank 11 in the bow-stern direction FA, and is formed as a continuous cylindrical shape in the bow-stern direction FA. When viewed from the axial direction Da (bow-stern direction FA) extending from the axis O, the cylindrical portion 11a is circular. The diameter of the cylindrical portion 11a in this first embodiment is constant in the axial direction Da.

[0039] The mirror plate portions 11b are respectively disposed at both ends of the cylindrical portion 11a along the axial direction Da. Each mirror plate portion 11b is hemispherical and closes the openings at both ends of the cylindrical portion 11a along the axial direction Da.

[0040] A tank support 20A is provided on the hull 2. The tank support 20A supports the tank 11. The tank support 20A has a plurality of saddles 21 capable of supporting the tank 11 from below. The plurality of saddles 21 are arranged at intervals along the axial direction Da.

[0041] The storage tank support 20A includes a first saddle 22, a second saddle 23, and a third saddle 24 as multiple saddles 21. The first saddle 22, second saddle 23, and third saddle 24 are spaced apart along the axial direction Da. The first saddle 22, for example, is located on one side relative to the center of the storage tank 11 along the axial direction Da. In this embodiment, the first saddle 22 is located on the stern 2b side in the bow-stern direction FA. The second saddle 23 is located at the center of the storage tank 11 along the axial direction Da. The second saddle 23 is located, for example, between the first saddle 22 and the third saddle 24 along the axial direction Da. The third saddle 24 is located on the other side relative to the center of the storage tank 11 along the axial direction Da. The third saddle 24 is located, for example, on the bow 2a side in the bow-stern direction FA.

[0042] Figure 3 This is a diagram showing the fixed saddle according to an embodiment of the present invention viewed from the axial direction. Figure 4 yes Figure 3 AA-direction sectional view.

[0043] In this first embodiment, the first saddle 22 is a fixed saddle. For example... Figure 3 , Figure 4 As shown, the fixed saddle, i.e. the first saddle 22, supports the storage tank 11 so that it cannot move along the axial direction Da. The first saddle 22 (fixed saddle) has a base component 221 fixed to the hull 2 ​​and a fixing block component (block component) 222.

[0044] like Figure 4 As shown, the base component 221 is fixed to the hull 2. The base component 221 has downwardly extending legs 221k. The base component 221 is made of metal, for example, and is fixed to the hull 2 ​​by welding or the like. A downwardly recessed arc-shaped curved surface 221f is formed on the upper surface of the base component 221. Furthermore, the base component 221 has a pair of wall portions 221w that rise from both ends of the curved surface 221f along the axial direction Da toward the inner side in the radial direction Dr centered on the axis O of the tank 11. In the base component 221, the radius of curvature of the curved surface 221f toward the inner side in the radial direction Dr, when viewed from the axial direction Da, is greater than the radius of curvature of the outer peripheral surface of the fixing block component 222, which will be described later. A filler material such as resin (not shown) is filled between the curved surface 221f and the outer peripheral surface of the fixing block component 222.

[0045] The fixing block component 222 is fixed to the outer peripheral surface of the storage tank 11. When viewed from the axial direction Da, the fixing block component 222 extends in a semi-circular arc along the circumferential direction Dc along the outer peripheral surface of the lower half of the storage tank 11. Here, the fixing block component 222 is generally semi-circular in shape by arranging multiple blocks 222b along the circumferential direction Dc.

[0046] Viewed from a cross section perpendicular to the circumferential direction Dc, the fixing block component 222 is, for example, rectangular in shape. The fixing block component 222 is mounted on the curved surface 221f of the base component 221. The fixing block component 222 is accommodated between a pair of wall portions 221w. Thus, the fixing block component 222 is clamped by the pair of wall portions 221w, thereby fixing it so that it cannot be displaced along the axial direction Da.

[0047] The fixing block component 222 is provided along the outer peripheral surface of the storage tank 11. The fixing block component 222 is fixed to the outer peripheral surface of the storage tank 11 by epoxy resin or the like.

[0048] The fixing block component 222 has a slit 222s recessed from its inner circumferential surface toward its outer side in the radial direction Dr at its middle portion in the axial direction Da. A protrusion 11t is provided on the outer circumferential surface of the storage tank 11, which is inserted into the slit 222s. The protrusion 11t protrudes from the outer circumferential surface of the storage tank 11 toward its outer side in the radial direction Dr. The protrusion 11t is inserted into the slit 222s, thereby fixing the fixing block component 222 so that it cannot be displaced relative to the storage tank 11 along the axial direction Da. Here, the slit 222s and the protrusion 11t can extend along the circumferential direction Dc. Multiple sets of slits 222s and protrusions 11t can be arranged at intervals along the circumferential direction Dc.

[0049] The fixing block component 222 is formed of an insulating material with a lower thermal conductivity than the metallic material forming the base component 221 and the storage tank 11. For example, laminated wood such as beech wood can be used as the insulating material forming the fixing block component 222.

[0050] Figure 5 This is a diagram showing the sliding saddle according to an embodiment of the present invention viewed from the axial direction. Figure 6 yes Figure 5 BB-direction sectional view.

[0051] like Figure 5 , Figure 6 As shown, in this first embodiment, the second saddle 23 and the third saddle 24 are sliding saddles. The second saddle 23 and the third saddle 24 respectively support the storage tank 11 so that it can slide along the axial direction Da. The second saddle 23 and the third saddle 24 respectively have a base component 231 fixed to the hull 2, a hull side block component 232 and a storage tank side block component 233.

[0052] The base component 231 is fixed to the hull 2. The base component 231 has downwardly extending legs 231k. The base component 231 is made of metal, for example, and is fixed to the hull 2 ​​by welding or the like. A downwardly recessed arc-shaped curved surface 231f is formed on the upper surface of the base component 231. Furthermore, the base component 231 has a pair of wall portions 231w that rise from both sides in the axial direction Da toward the inner side in the radial direction Dr relative to the curved surface 231f.

[0053] The hull side block component 232 is fixed to the base component 231. That is, the hull side block component 232 is fixed to the hull 2 ​​via the base component 231. The hull side block component 232 is arranged along the curved surface 231f of the base component 231. When viewed from the axial direction Da, the hull side block component 232 extends in a semi-circular arc along the curved surface 231f and along the circumferential direction Dc. Here, the hull side block component 232 is generally semi-circular in shape by arranging multiple blocks 232b along the circumferential direction Dc.

[0054] Viewed from a section perpendicular to the circumferential direction Dc, the hull side block component 232 is, for example, rectangular. The hull side block component 232 is disposed on the curved surface 231f of the base component 231. The hull side block component 232 is housed between a pair of wall portions 231w. Thus, the hull side block component 232 is clamped by the pair of wall portions 231w, thereby fixing it so that it cannot move along the axial direction Da. In the hull side block component 232, the radius of curvature of the inner circumferential surface 232f facing the radial direction Dr, when viewed from the axial direction Da, is greater than the radius of curvature of the outer circumferential surface of the tank side block component 233, which will be described later.

[0055] The tank side block component 233 is fixed to the outer peripheral surface of the tank 11. When viewed from the axial direction Da, the tank side block component 233 extends in a semi-circular arc along the circumferential direction Dc along the outer peripheral surface of the lower half of the tank 11. Here, multiple blocks 232b are arranged along the circumferential direction Dc of the tank side block component 233, thereby forming a semi-circular arc shape overall. The tank side block component 233 is fixed to the outer peripheral surface of the tank 11 by epoxy resin or the like.

[0056] Viewed from a section perpendicular to the circumferential direction Dc, the tank side block component 233 is, for example, rectangular in shape. A pair of wall portions 11w are provided on the outer circumferential surface of the tank 11. The pair of wall portions 11w are located on both sides of the tank side block component 233 in the axial direction Da. Each wall portion 11w protrudes outward from the outer circumferential surface of the tank 11 in the radial direction Dr.

[0057] The tank side block component 233 is disposed on the inner side of the hull side block component 232 in the radial direction Dr. The tank side block component 233 is disposed between a pair of wall portions 11w, thereby fixing it so that it cannot be displaced relative to the tank 11 along the axial direction Da.

[0058] The hull side block component 232 and the tank side block component 233 are opposed to each other in the radial direction Dr. The tank side block component 233 is slidable relative to the hull side block component 232 along the axial direction Da. Here, in order to suppress the friction between the tank side block component 233 and the hull side block component 232, a sliding plate 235, for example made of stainless steel, can be inserted between the tank side block component 233 and the hull side block component 232.

[0059] The tank side block component 233 can slide along the axial direction Da relative to the hull side block component 232, so the tank 11 is supported so that it can slide along the axial direction Da via the second saddle 23.

[0060] (Effects)

[0061] In the ship 1 of the first embodiment described above, the multiple saddles of the tank support 20A, which supports the tank 11, include one fixed saddle, namely the first saddle 22, multiple sliding saddles, namely the second saddle 23 and the third saddle 24. That is, the tank support 20A has at least three saddles 21 (22, 23, 24). As a result, compared with the case where the tank 11 is supported only by the fixed saddle, namely the first saddle 22 and the sliding saddle, namely the second saddle 23, the load acting on the tank 11 by one saddle 21 is reduced. Furthermore, the reaction force acting on the tank 11 from each saddle 21 (22, 23, 24) is also reduced, so the necessity to increase the strength of the tank 11 to resist the stress acting on the tank 11 by the reaction force from the saddle 21 is suppressed.

[0062] Therefore, it is possible to suppress the increase in the self-weight of the storage tank 11, the rise in material costs, etc., and to prevent the storage tank 11 from becoming too large and becoming an obstacle to the storage of heavy-weight items. As a result, the ship 1 can provide a reduced reaction force from the saddle 21 and can cope with the large size of the storage tank 11 and the storage of heavy-weight items.

[0063] (A variation of the first embodiment)

[0064] In addition, in the first embodiment described above, the tank support 20A is configured to include a first saddle 22, a second saddle 23 and a third saddle 24, but it may also include four or more saddles.

[0065] Furthermore, in the first embodiment described above, the sliding saddles, namely the second saddle 23 and the third saddle 24, are sequentially separated along the axial direction Da, relative to the fixed saddle, namely the first saddle 22. In this case, the sliding saddles can be configured such that the greater the separation distance from the fixed saddle (first saddle 22), the smaller the coefficient of friction between the hull side block component 232 and the tank side block component 233.

[0066] Furthermore, the third saddle 24, as shown in the first embodiment above, can be additionally provided on the storage tank 11, which is supported only by the first saddle 22 (fixed saddle) and the second saddle 23 (sliding saddle).

[0067] <Second Implementation>

[0068] Next, a second embodiment of the ship according to the present invention will be described. In the second embodiment described below, only the structure of the tank support differs from that of the first embodiment. Therefore, the parts that are the same as those in the first embodiment will be described using the same symbols, and repeated descriptions will be omitted.

[0069] Figure 7 This is a cross-sectional view showing the sliding saddle according to the second embodiment of the present invention.

[0070] like Figure 1 , Figure 2 As shown, in the storage tank equipment 10 of the ship 1 in this embodiment, the storage tank support 20B has a first saddle 22 (fixed saddle), a second saddle 23 (sliding saddle) and a third saddle 25 as a plurality of saddles 21.

[0071] like Figure 7 As shown, the third saddle 25 in the second embodiment is a sliding saddle. The sliding saddle, i.e., the third saddle 25, supports the storage tank 11 in a manner that allows it to slide along the axial direction Da. The third saddle 25 includes a base component 251 fixed to the hull 2, a hull side block component 252, and a storage tank side block component (block component) 253.

[0072] The base component 251 in this second embodiment has the same structure as the base component 231 in the first embodiment. Furthermore, the hull side block component 252 has the same structure as the hull side block component 232 in the first embodiment.

[0073] The tank side block component 253 is fixed to the outer peripheral surface of the tank 11. When viewed from the axial direction Da, the tank side block component 253 extends in a semi-circular arc along the outer peripheral surface of the lower half of the tank 11 in the circumferential direction Dc.

[0074] In this second embodiment, the elastic modulus of at least one of the tank side block component 253 and the hull side block component 252 of the third saddle 25 is smaller than that of the fixed block component 222 of the first saddle 22 and the tank side block component 233 and the hull side block component 232 of the second saddle 23. Therefore, in this second embodiment, the width W3 of the tank side block component 253 along the axial direction Da is set to be smaller than the width W1 of the fixed block component 222 (see reference). Figure 4 ), the width W2 of the tank side block component 233 (reference) Figure 6 Alternatively, the width of the hull side block component 252 along the axial direction Da can be set to be smaller than the width W1 of the fixed block component 222 (see reference). Figure 4 ), the width of the hull side block component 232.

[0075] (Effects)

[0076] In the ship 1 of the second embodiment described above, the elastic modulus of the tank side block component 253 of one of the multiple saddles 21 (first saddle 22, second saddle 23, and third saddle 25) is set to be smaller than the elastic modulus of the block components 222 and 233 of the other first saddles 22 and second saddles 23. When the tank 11 is supported by three or more saddles 21, when the load of the tank 11 is applied to all of the multiple saddles 21, the load of the tank 11 is not uniformly distributed among the multiple saddles 21, but is sometimes concentrated on at least one third saddle 25 among the multiple saddles 21 compared to the other first saddles 22 and second saddles 23. In this case, by making the elastic modulus of the tank side block component 253 of the third saddle 25 where the load is concentrated smaller than the elastic modulus of the block components 222 and 233 of the other first saddles 22 and second saddles 23, the tank side block component 253 undergoes significant elastic deformation according to the concentrated load. Thus, according to the concentrated load, the tank side block component 253 of the third saddle 25 with a small elastic modulus undergoes elastic deformation, thereby homogenizing the load distribution of the tank 11 acting between the multiple saddles 21. As a result, it is possible to suppress the increase of the reaction force acting on the tank 11 from the saddle 21 at specific locations of the tank 11.

[0077] Furthermore, by making the width W3 of the tank-side block component 253 of the third saddle 25 in the axial direction Da smaller than the widths W1 and W2 of the block components 222 and 233 of the other first saddles 22 and second saddles 23, the elastic modulus of the tank-side block component 253 becomes smaller than that of the block components 222 and 233 of the other first saddles 22 and second saddles 23. Thus, by simply adjusting the width of the tank-side block component 253 in the axial direction Da, the load distribution of the tank 11 acting on the multiple saddles 21 can be easily made uniform.

[0078] Furthermore, in the ship 1 of the second embodiment described above, similarly to the first embodiment described above, the plurality of saddles 21 that serve as the tank support portion 20B supporting the tank 11 include a fixed saddle, namely the first saddle 22, and a plurality of sliding saddles, namely the second saddle 23 and the third saddle 25. This enables the ship 1 to reduce the reaction force from the saddles 21 and to cope with the storage of large-sized tanks and heavy-density stored items.

[0079] (First variation of the second embodiment)

[0080] In the second embodiment described above, in order to make the elastic modulus of the tank side block component 253 of the third saddle 25 less than that of the block components 222 and 233 of the other first saddle 22 and second saddle 23, the width W3 in the axial direction Da of the tank side block component 253 is reduced, but it is not limited to this.

[0081] Figure 8 This is a cross-sectional view showing the sliding saddle according to the first variation of the second embodiment of the present invention.

[0082] For example, such as Figure 8 As shown, the thickness H3 on the radial direction Dr of the hull side block component 252 and the tank side block component 253B of the third saddle 25 can be greater than the thicknesses H1 and H2 of the other block components 222, 232, and 233 of the first saddle 22 and the second saddle 23. Thus, to make the thickness H3 on the radial direction Dr greater than the thicknesses H1 and H2, it is only necessary to increase the distance between the curved surface 231f of the third saddle 25 and the outer peripheral surface of the tank. Furthermore, in Figure 8 The example illustrates increasing the thickness H3 by increasing the radial Dr of the tank side block component 253B, but it is sufficient to increase the thickness of at least one of the hull side block component 252 and the tank side block component 253B. This also allows the elastic modulus of the third saddle 25 to be less than that of the other first saddles 22 and second saddles 23.

[0083] According to a variation of the second embodiment, the elastic modulus of the third saddle 25 is made smaller than that of the other first saddles 22 and second saddles 23 simply by adjusting the thickness H3, so that the load distribution of the tank 11 acting on the multiple saddles 21 can be easily made uniform.

[0084] (Second variation of the second embodiment)

[0085] Furthermore, as a second variation of the second embodiment described above, the Young's modulus of the materials forming the hull side block component 252 and the tank side block component 253 of the third saddle 25 can be made smaller than the Young's modulus of the materials constituting the other first saddles 22 and the second saddle 23, namely the block components 222, 232, and 233. Therefore, the elastic modulus of the third saddle 25 can also be made smaller than the elastic modulus of the other first saddles 22 and the second saddle 23.

[0086] If the Young's modulus of the material forming the tank side block component 253 is less than the Young's modulus of the material constituting the other first saddle 22, second saddle 23 block components 222, 232, 233, then, in the case where the other first saddle 22, second saddle 23 block components 222, 233 are formed, for example, by laminated wood, then phenolic laminated material can be used as the material forming the tank side block component 253.

[0087] According to a second variation of the second embodiment, by making the Young's modulus of the material forming the hull side block component 252 and the tank side block component 253 of the third saddle 25 smaller than the Young's modulus of the material forming the other block components 222 and 233 of the first saddle 22 and the second saddle 23, the elastic modulus of the tank side block component 253, which is made of a material with a small Young's modulus, is smaller than the elastic modulus of the other block components 222 and 233 of the first saddle 22 and the second saddle 23. Therefore, by simply adjusting the Young's modulus of the material forming the tank side block component 253, the load distribution acting on the multiple saddles 21 of the tank 11 can be easily made uniform.

[0088] Furthermore, in the second variation of the second embodiment described above, the Young's modulus of the material forming the hull side block component 252 and the tank side block component 253 of the third saddle 25 is made smaller than the Young's modulus of the material forming the other block components 222 and 233 of the first saddle 22 and the second saddle 23. However, it is also possible to make the Young's modulus of the material forming at least one of the hull side block component 252 and the tank side block component 253 of the third saddle 25 smaller than the Young's modulus of the material forming the other block components 222 and 233 of the first saddle 22 and the second saddle 23.

[0089] In the second embodiment and its various modifications described above, the elastic modulus of the hull side block component 252 and the tank side block component 253 in the sliding saddle, i.e. the third saddle 25, is reduced, but the elastic modulus of the block component 222 of the first saddle 22 or the block components 232 and 233 of the second saddle 23 can also be increased.

[0090] <Third Implementation Method>

[0091] Next, a third embodiment of the ship according to the present invention will be described. In the third embodiment described below, only the structure of the tank support differs from that of the first and second embodiments. Therefore, the parts that are the same as those in the first and second embodiments will be described using the same symbols, and repeated descriptions will be omitted.

[0092] Figure 9 This is a diagram showing the sliding saddle according to the third embodiment of the present invention viewed from the axial direction.

[0093] like Figure 1 As shown, in the storage tank equipment 10 of the ship 1 in this embodiment, the storage tank support 20C has a first saddle 22 (fixed saddle), a second saddle 23 (sliding saddle) and a third saddle 26 as a plurality of saddles 21.

[0094] like Figure 9 As shown, in this third embodiment, the third saddle 26 is a sliding saddle. The third saddle 26 includes a pair of saddle components 260A and 260B that are separately arranged on both sides of the tank 11 in the radial direction Dr in the horizontal plane. When viewed from the axial direction Da of the tank 11, the saddle components 260A and 260B illustrated in this third embodiment are arranged separately in the horizontal direction. The saddle components 260A and 260B illustrated in the third embodiment are arranged symmetrically about the axis O. The saddle components 260A and 260B respectively include a base component 261 fixed to the hull 2, a hull side block component 262, and a tank side block component (block component) 263.

[0095] In this third embodiment, the tank side block component 263 is fixed to the outer peripheral surface of the tank 11. The tank side block component 263 is separately arranged on both sides of the tank 11 in the radial direction Dr. In other words, when viewed from the axial direction Da of the tank 11, the tank side block component 263 is horizontally separated in the lower half of the outer peripheral surface of the tank 11. When viewed from the axial direction Da, the tank side block component 263 of this third embodiment is formed as an arc extending along the upper outer peripheral surface of the lower half of the tank 11.

[0096] The hull side block component 262 is fixed to the base component 261. When viewed from the axial direction Da, the hull side block component 262 is positioned in the area that overlaps with the position of the tank side block component 263 in the circumferential direction Dc, and extends in an arc shape along the circumferential direction Dc.

[0097] The tank side block component 263 and the hull side block component 262 are preferably disposed in the circumferential direction Dc around the axis O with respect to the horizontal plane including the axis O at a downward tilt angle θ, for example, in the range of 5 to 45°.

[0098] Furthermore, the hull side block component 262 is preferably separated from the tank side block component 263 by approximately 1 mm to 50 mm in the radial direction (Dr).

[0099] (Effects)

[0100] In the ship 1 of the third embodiment described above, one of the multiple sliding saddles, namely the second saddle 23 and the third saddle 26, is a third saddle 26 equipped with a pair of saddle components 260A and 260B separately arranged on both sides of the storage tank 11 in the radial direction Dr. Thus, normally, the storage tank 11 is supported by a fixed saddle, namely the first saddle 22, and a sliding saddle, namely the second saddle 23. When the storage tank 11 is displaced by a predetermined dimension or more in the radial direction Dr, in addition to the fixed saddle, namely the first saddle 22, and the sliding saddle, namely the second saddle 23, the third saddle 26, equipped with a pair of saddle components 260A and 260B, supports the lower half of the storage tank 11 from below. Therefore, when the storage tank 11 is displaced in a direction intersecting the axis O due to the swaying of the ship 1, the load acting on the storage tank 11 on one saddle 21 can be reduced.

[0101] <Fourth Implementation>

[0102] Next, a fourth embodiment of the ship according to the present invention will be described. In the fourth embodiment described below, only the structure of the tank support 20D differs from that of the first embodiment. Therefore, the parts that are the same as those in the first embodiment will be described using the same reference numerals, and repeated descriptions will be omitted.

[0103] Figure 10 This is a cross-sectional view showing the sliding saddle according to the fourth embodiment of this embodiment.

[0104] like Figure 1 As shown, in the storage tank equipment 10 of the ship 1 in this embodiment, the storage tank support 20D has a first saddle 22 (fixed saddle), a second saddle 23 (sliding saddle) and a third saddle 27 as a plurality of saddles 21.

[0105] In this fourth embodiment, the third saddle 27 is a sliding saddle. The sliding saddle, i.e., the third saddle 27, supports the storage tank 11 so that it can slide along the axial direction Da. The third saddle 27 includes a base component 271 fixed to the hull 2, a hull side block component 272, and a storage tank side block component 273.

[0106] The base component 271 of this fourth embodiment has the same structure as the base component 231 in the first embodiment described above. Furthermore, the hull side block component 272 has the same structure as the hull side block component 232 in the first embodiment described above.

[0107] The tank side block component 273 is fixed to the outer peripheral surface of the tank 11. When viewed from the axial direction Da, the tank side block component 273 extends in a semi-circular arc along the outer peripheral surface of the lower half of the tank 11 in the circumferential direction Dc.

[0108] In this fourth embodiment, the tank side block component 273 and the hull side block component 272 are separately arranged in the radial direction Dr of the tank 11. The distance S between the tank side block component 273 and the hull side block component 272 in the radial direction Dr is preferably set to about 1 to 50 mm.

[0109] (Effects)

[0110] In the ship 1 of the fourth embodiment described above, the tank side block component 273 and the hull side block component 272 of at least one of the multiple sliding saddles, namely the second saddle 23 and the third saddle 27, are separately arranged radially Dr of the tank 11. Thus, normally, the tank 11 is supported by a fixed saddle, namely the first saddle 22, and at least one sliding saddle, namely the second saddle 23. In cases such as when the contents of the tank 11 increase or the tank 11 is displaced downward, the tank side block component 273 contacts the hull side block component 272 in at least one sliding saddle, namely the third saddle 27, supporting the load of the tank 11 from below. Thus, in addition to the first saddle 22, which is a fixed saddle, and the second saddle 23, which is a sliding saddle, the third saddle 27, which has the tank side block component 273 in contact with the hull side block component 272, supports the tank 11 from below, thereby reducing the load acting on the tank 11 of one saddle 21.

[0111] (Other implementation methods)

[0112] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the specific structure is not limited to these embodiments and may include design changes that do not depart from the spirit of the present invention.

[0113] Furthermore, in the above embodiment, the first saddle 22 disposed on one side of the storage tank 11 along the axial direction Da is designated as a fixed saddle, and the second saddle 23 disposed on the other side of the storage tank 11 along the axial direction Da and the third saddle 27 disposed in the middle part of the storage tank 11 along the axial direction Da are designated as sliding saddles, but this is not a limitation. For example, the second saddle 23 can be designated as a fixed saddle, and the first saddle 22 and the third saddle 27 can be designated as sliding saddles. Also, for example, the third saddle 27 can be designated as a fixed saddle, and the first saddle 22 and the second saddle 23 can be designated as sliding saddles.

[0114] Furthermore, the storage tank 11 is designed to be cylindrical, but the storage tank 11 can also be a double-blade type, a three-blade type, etc.

[0115] <Appendix>

[0116] The ship 1 described in each embodiment can be understood, for example, as follows.

[0117] (1) The vessel 1 involved in the first method comprises: a hull 2; a storage tank 11 disposed on the hull 2 ​​and having a cylindrical shape having an axis O extending in the horizontal direction; and storage tank support portions 20A and 20B disposed on the hull 2 ​​and supporting the storage tank 11. The storage tank support portions 20A and 20B have a plurality of saddles 21 extending along the circumferential direction Dc along the outer peripheral surface of the lower part of the storage tank 11 and being separately disposed along the axial direction Da extending from the axis O. Each of the plurality of saddles 21 comprises: a fixed saddle 22 that supports the storage tank 11 so that it cannot move along the axial direction Da; and a plurality of sliding saddles 23 to 27 that support the storage tank 11 so that it can slide along the axial direction Da.

[0118] Therefore, compared to the case where the storage tank 11 is supported by two saddles 21, namely a fixed saddle 22 and a sliding saddle 23, the load acting on the storage tank 11 on a single saddle 21 is smaller, and the reaction force acting on the storage tank 11 from the saddle 21 is also smaller. Thus, the necessity to increase the strength of the storage tank 11 to resist the stress acting on it by the reaction force from the saddle 21 is suppressed. Therefore, the increase in the self-weight of the storage tank 11 and the rise in material costs can be suppressed, and the obstacles to the enlargement of the storage tank 11 and the storage of heavy-density items are suppressed. As a result, a vessel 1 can be provided that can reduce the reaction force from the saddle 21 and cope with the enlargement of the storage tank 11 and the storage of heavy-density items.

[0119] (2) The vessel 1 involved in the second method is the vessel 1 of (1), wherein the plurality of saddles 21 have a base component 251 fixed to the hull 2 ​​and a block component 253 disposed between the base component 251 and the outer peripheral surface of the storage tank 11, and the elastic modulus of the block component 253 of at least one of the plurality of saddles 25 is less than the elastic modulus of the block components 222 and 233 of the other saddles 22 and 23.

[0120] When the storage tank 11 is supported by three or more saddles 21, the load of the storage tank 11 is not uniformly distributed among the saddles 21 when the load of the storage tank 11 is applied to all of the saddles 21. Instead, the load is sometimes concentrated on at least one saddle 25 among the saddles 21 compared to the other saddles 22 and 23. However, as long as the elastic modulus of the saddle 25 where the load is concentrated is less than that of the other saddles 22 and 23, the saddle 25 with the smaller elastic modulus will undergo significant elastic deformation under the concentrated load compared to the other saddles 22 and 23. Thus, the block component 253 of the saddle 25 with the smaller elastic modulus elastically deforms under the concentrated load, thereby homogenizing the distribution of the load of the storage tank 11 among the saddles 21. As a result, it is possible to suppress the increase of the reaction force acting on the storage tank 11 from the saddles 21 at specific locations of the storage tank 11.

[0121] (3) The vessel 1 involved in the third method is the vessel 1 of (2), wherein the width W3 of the storage tank 11 in the axial direction Da is smaller than that of the block component 253 of at least one of the plurality of saddles 21 compared with the block components 222, 232, 233 of the other saddles 22, 23.

[0122] As a result, the elastic modulus of the block component 253, which has a smaller width W3 along the axial direction Da, is smaller than that of the other block components 222, 232, and 233 of the saddles 22 and 23. Therefore, by simply adjusting the width of the block component 253 along the axial direction Da, the load distribution of the tank 11 acting on the multiple saddles 21 can be easily made uniform.

[0123] (4) The vessel 1 involved in the fourth method is the vessel 1 of (2) or (3), wherein the thickness H3 on the radial Dr of the tank 11 is greater than that of the block component 253 of at least one of the plurality of saddles 21 compared with the block components 222, 232, 233 of the other saddles 22, 23.

[0124] As a result, the elastic modulus of block component 253 becomes smaller than that of the other block components 222, 232, and 233 of the saddles 22 and 23. Therefore, by simply adjusting the thickness H3 on the radial Dr of block component 253, the load distribution of the tank 11 acting on the multiple saddles 21 can be easily made uniform.

[0125] (5) The vessel 1 involved in the fifth method is any one of (2) to (4) wherein, at least one of the saddles 21 has a block component of the saddle 25 formed of a material with a smaller Young's modulus than the block components 222, 232, 233 of the other saddles 22, 23.

[0126] As a result, the elastic modulus of block component 253 becomes smaller than that of the other block components 222 and 233 of the saddles 22 and 23. Therefore, by simply adjusting the Young's modulus of the material forming block component 253, the load distribution acting on the multiple saddles 21 of the tank 11 can be easily made uniform.

[0127] (6) The vessel 1 involved in the sixth method is any one of (1) to (5), wherein at least one of the plurality of sliding saddles 23, 26 has a pair of saddle components 260A, 260B, which are separately arranged on both sides of the radial Dr of the tank 11 and support the lower half of the tank 11 from below when the tank 11 is displaced by a predetermined dimension in the radial Dr.

[0128] Therefore, normally, the storage tank 11 is supported by a fixed saddle 22 and a sliding saddle 23. When the storage tank 11 is displaced by a predetermined dimension or more in the radial direction Dr, in addition to the fixed saddle 22 and the sliding saddle 23, the lower half of the storage tank 11 is supported from below by a sliding saddle 26 equipped with a pair of saddle components 260A and 260B. Thus, when the storage tank 11 is displaced in a direction intersecting the axis O due to the swaying of the ship 1, the load acting on the saddle 21 can be reduced.

[0129] (7) The vessel 1 involved in the seventh method is any one of (1) to (6) of the vessel 1, wherein at least one of the plurality of sliding saddles 23, 27 comprises: a base component 271, which is fixed to the hull 2; a tank side block component 273, which is fixed to the outer peripheral surface of the tank 11; and a hull side block component 272, which is fixed to the base component 271, wherein the tank side block component 273 and the hull side block component 272 are separately arranged on the radial Dr of the tank 11.

[0130] Therefore, normally, the storage tank 11 is supported by a fixed saddle 22 and at least one sliding saddle 23. In cases where the contents of the storage tank 11 increase or the tank 11 shifts downwards, the tank side block member 273 contacts the hull side block member 272 in at least one sliding saddle 27, supporting the load of the storage tank 11 from below. Thus, in addition to the fixed saddle 22 and the sliding saddle 23, the storage tank 11 is also supported from below by the sliding saddle 27, where the tank side block member 273 contacts the hull side block member 272, thereby reducing the load acting on the storage tank 11 from one saddle 21.

[0131] Industrial availability

[0132] The ship according to the present invention can provide a ship that can reduce the reaction force from the saddle and cope with the large size of the storage tank, the storage of heavy materials, etc.

[0133] Symbol Explanation

[0134] 1-Ship, 2-Hull, 2a-Bow, 2b-Stern, 3A, 3B-Side, 4-Bottom, 5-Upper Deck, 7-Superstructure, 10-Tank Equipment, 11-Tank, 11a-Cylindrical Section, 11b-Mirror Plate Section, 11t-Protrusion, 11w-Wall Section, 20A~20D-Tank Support Section, 22-First Saddle (Fixed Saddle, Saddle), 23-Second Saddle (Sliding Saddle, Saddle), 24~27-Third Saddle (Sliding Saddle, Saddle), 221-Base Component, 221f-Bent Surface, 221k-Leg, 221w-Wall Section, 222 - Fixed block component (block component), 222b-block body, 222s-slit, 231-base component, 231f-bent surface, 231k-leg, 231w-wall, 232-hull side block component (block component), 232b-block body, 232f-inner circumferential surface, 233-tank side block component (block component), 235-slide plate, 251, 261, 271-base component, 252, 262, 272-hull side block component, 253, 253B, 263, 273-tank side block component (block component), 260A, 260B-saddle component.

Claims

1. A ship having: hull; A storage tank, disposed on the hull, and cylindrical in shape having an axis extending in a horizontal direction; and A tank support, which is disposed on the hull and supports the tank, The tank support has a plurality of saddles that extend circumferentially along the outer peripheral surface of the lower part of the tank and are spaced apart axially along the axis extending from the axis. As one of the aforementioned saddles, it has: A fixed saddle that supports the tank so that it cannot move along the axial direction; and Multiple sliding saddles support the tank so that it can slide along the axial direction.

2. The vessel according to claim 1, wherein, The plurality of saddles include a base component fixed to the hull and a block component disposed between the base component and the outer peripheral surface of the storage tank. The elastic modulus of the block component of at least one of the plurality of saddles is less than that of the block components of the other saddles.

3. The vessel according to claim 2, wherein, The axial width of the tank is smaller in at least one of the saddles compared to the block components of the other saddles.

4. The vessel according to claim 2, wherein, The block component of at least one of the plurality of saddles has a greater thickness in the radial direction of the tank compared to the block components of the other saddles.

5. The vessel according to claim 2, wherein, At least one of the saddles has a block component formed of a material with a lower Young's modulus compared to the block components of the other saddles.

6. The vessel according to claim 1, wherein, At least one of the plurality of sliding saddles has a pair of saddle components that are arranged separately on both radial sides of the tank and support the lower half of the tank from below when the tank is displaced radially by a predetermined dimension or more.

7. The vessel according to claim 1, wherein, At least one of the plurality of sliding saddles comprises: The base component is fixed to the hull; Tank side block components, fixed to the outer peripheral surface of the tank; and The hull side block component is fixed to the base component. The tank side block component and the hull side block component are arranged separately in the radial direction of the tank.

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