Transverse supporting structure of liquid tank

Abstract

The utility model relates to a liquid tank transverse supporting structure which comprises a first metal structure arranged on a liquid tank, a liquid tank laminated wood fixing structure fixed to the first metal structure and liquid tank part laminated wood fixed to the liquid tank laminated wood fixing structure through a first bolt. The ship body supporting part comprises a second metal structure fixed to the ship body of the liquefied gas carrier and ship body part laminated wood connected to the second metal structure through a second bolt, and the end face of the ship body part laminated wood abuts against the end face of the liquid tank part laminated wood in the transverse direction. The gap adjusting function of the liquid tank transverse supporting structure is carried by the ship body side, so that all components at the liquid tank end can be completed before being assembled on the ship. Therefore, the high stress risk of epoxy is avoided, and the integrity of the liquid tank and insulation is ensured. The ship body part laminated wood is further used for adjusting the straightness and flatness between the ship body and the liquid tank, installation can be carried out after the liquid tank is assembled on the ship or the main deck is closed, and installation is convenient.

Description

Technical Field

[0001] The present application relates to the field of ship and ocean engineering, and in particular to a lateral support structure for a liquid tank on a liquefied gas ship. Background Art

[0002] The lateral support structure of a liquefied gas tank on a vessel is responsible for transmitting the lateral loads generated by the tank's own weight and movement. Traditionally, this structure consists of two components: the metal structure of the hull; and the metal structure of the tank and laminated wood, with the laminated wood and the metal structure of the tank being bonded using epoxy.

[0003] The above-mentioned lateral support structure has at least the following defects:

[0004] (1) It can only be used for liquid tanks with small shrinkage deformation. If it is loaded with ultra-low temperature liquid cargo or the thermal expansion coefficient of the liquid tank material is high, the compressive stress caused by the shrinkage deformation of the supporting structure will exceed the compressive strength of the epoxy.

[0005] (2) To adjust the straightness and flatness of the metal structure of the hull and the tank, epoxy will be used as a regulating structure. Therefore, the epoxy pouring must be carried out after the tank is assembled to the hull. This will result in the insulation integrity of the tank near the supporting structure being unable to be guaranteed, the docking period will be extended, and it will be difficult to install multiple insulation parts in a small space. Utility Model Content

[0006] Based on this, it is necessary to propose a liquid tank lateral support structure that can ensure the insulation integrity of the liquid tank.

[0007] According to one aspect of the present application, a liquid tank transverse support structure includes a liquid tank support portion, including a first metal structure provided on the liquid tank, a liquid tank laminated wood fixing structure fixed to the first metal structure, and a liquid tank partial laminated wood fixed to the liquid tank laminated wood fixing structure by a first bolt; a hull support portion, including a second metal structure fixed to the hull of a liquefied gas ship, and a hull partial laminated wood connected to the second metal structure by a second bolt, the end face of the hull partial laminated wood abutting the end face of the liquid tank partial laminated wood along the transverse direction.

[0008] In some embodiments, all end surfaces of the laminated wood of the liquid tank portion abut against end surfaces of the laminated wood of the hull portion.

[0009] In some embodiments, the area of ​​the end surface of the laminated wood of the liquid tank portion is smaller than the area of ​​the end surface of the laminated wood of the hull portion.

[0010] Some embodiments further include a metal gasket, which is arranged between the laminated wood of the hull part and the laminated wood of the liquid tank part.

[0011] In some embodiments, the metal gasket is fixed to the end surface of the laminated wood of the liquid tank portion or the laminated wood of the hull portion.

[0012] In some embodiments, the tank portion laminated wood includes a plurality of laminated wood layers arranged in a stacked manner, and the hull portion laminated wood includes a plurality of laminated wood layers arranged in a stacked manner.

[0013] In some embodiments, the liquid tank partial laminated wood fixing structure is provided with a groove, and the liquid tank partial laminated wood is embedded in the groove; and the side wall of the first bolt connection groove abuts or is connected to the liquid tank partial laminated wood.

[0014] In some embodiments, the partially laminated wood fixing structure of the liquid tank is connected to the first metal structure by welding, or is integrally formed.

[0015] In some embodiments, a flat plate is further provided between the second metal structure and the laminated wood of the hull portion, and the flat plate is used to adjust the flatness of the contact surface between the second metal structure and the laminated wood of the hull portion.

[0016] In some embodiments, the second metal structure is connected to a lower surface of a main deck of the liquefied gas carrier and extends longitudinally.

[0017] In this application, bolts are used to connect the laminated wood of the tank section to the tank, and the laminated wood of the hull section to the hull. Bolts have good compressive and shear resistance and are particularly suitable for tanks carrying ultra-low temperature liquid cargoes and in situations where the tank material has a large thermal expansion coefficient. They avoid stress on the epoxy caused by shrinkage deformation.

[0018] Secondly, the gap adjustment function of the liquid tank's transverse support structure in this application is handled by the hull side, allowing all components on the liquid tank end to be completed before assembly on board. This avoids the high stress risk of epoxy, and the laminated wood can be installed before the entire liquid tank is assembled on board, thus ensuring the integrity of the liquid tank and insulation. The laminated wood added to the hull section is used to adjust the straightness and flatness between the hull and the liquid tank. This part can be pre-placed on the bottom of the ship / on top of the liquid tank and installed after the liquid tank is assembled on board / the main deck is closed. The connection method is bolts, which is easy to install and the installer's work cycle in a small space is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the liquid tank transverse support structure according to one embodiment of the present application.

[0020] Figure 2 for Figure 1 A top view of the liquid tank's transverse support structure in direction A.

[0021] Figure 3 for Figure 1A top view of the liquid tank's transverse support structure in direction B.

[0022] Figure 4 for Figure 1 Side view of the C-direction of the liquid tank's transverse support structure.

[0023] Figure 5 for Figure 1 Side view of the liquid tank's transverse support structure in the D direction.

[0024] Description of reference numerals:

[0025] 1. Liquid tank transverse support structure; 10. Liquid tank support part; 110. First metal structure; 120. Liquid tank laminated wood fixing structure; 121. Groove; 130. Liquid tank laminated wood; 140. First bolt; 20. Hull support part; 210. Second metal structure; 211. Connecting plate; 212. Vertical plate; 213. Reinforcement plate; 220. Second bolt; 230. Hull laminated wood; 30. Metal gasket; 2. Liquefied gas carrier; 21. Main deck; 3. Liquid tank. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] As described in the background technology, in the existing liquid tank transverse support structure, the laminated wood and the metal structure of the liquid tank are connected by epoxy, which makes it poor in applicability, and the insulation integrity of the liquid tank near the support structure cannot be guaranteed, the docking period is therefore extended, and it is difficult to install multiple insulating parts in a small space.

[0030] To address the above issues, this application proposes a liquid tank transverse support structure 1. This structure can be used to laterally position a liquid tank 3 on a liquefied gas carrier 2. It is responsible for transferring the transverse loads generated by the weight and movement of the liquid tank 3 to the hull of the liquefied gas carrier 2, and for limiting the rolling motion between the liquid tank 3 and the hull.

[0031] refer to Figures 1 to 5 ,in Figure 1 This is a front view of the liquid tank transverse support structure 1 according to an embodiment of the present application. Figure 2 for Figure 1 A top view of the liquid tank transverse support structure 1 in the direction A; Figure 2 Only the tank support portion 10 is shown schematically. Figure 3 for Figure 1 A top view of the liquid tank transverse support structure 1 in the direction B; Figure 3 Only the hull support portion 20 is shown schematically. Figure 4 for Figure 1 A side view of the liquid tank transverse support structure 1 in the direction C; Figure 4 Only the tank support portion 10 is shown schematically. Figure 5 for Figure 1 The side view of the liquid tank transverse support structure 1 in the direction of D, wherein Figure 5 Only the hull support portion 20 is shown schematically.

[0032] refer to Figure 1 The liquid tank transverse support structure 1 includes a liquid tank support portion 10 and a hull support portion 20. The liquid tank support portion 10 includes a first metal structure 110 provided on the liquid tank 3, a liquid tank laminated wood fixing structure 120 fixed to the first metal structure 110, and a liquid tank laminated wood 130 fixed to the liquid tank laminated wood fixing structure 120 by first bolts 140. Figure 1 、 Figure 5As shown, the hull support part 20 includes a second metal structure 210 fixed to the hull of the liquefied gas ship 2, and a hull part laminated wood 230 connected to the second metal structure 210 by a second bolt 220, and the end surface of the hull part laminated wood 230 is used to abut the end surface of the liquid tank part laminated wood 130 in the transverse direction.

[0033] In this application, the transverse direction refers to the horizontal direction, specifically the length or width direction of the hull of the liquefied gas ship 2. Correspondingly, the longitudinal direction refers to the vertical direction, specifically the height direction of the hull. Figure 1 Middle, horizontal Figure 1 The X direction in the vertical direction is Figure 1 Middle Z direction.

[0034] The liquid tank 3 is usually arranged in a cabin below the main deck 21 of the liquefied gas carrier 2. Figure 1 and Figure 2 The first metal structure 110 is the structure of the liquid tank 3 itself. The liquid tank laminated wood fixing structure 120 can be fixed to the first metal structure 110 by welding, for example. Alternatively, the liquid tank laminated wood fixing structure 120 and the first metal structure 110 can be integrally formed. The second metal structure 210 is fixed to the hull of the liquefied gas carrier 2. The specific connection method is not limited.

[0035] In this application, there are multiple first bolts 140 and multiple second bolts 220. The number of bolts should be calculated based on the maximum load that the support structure can bear. The first bolts 140 should be high-strength bolts or stainless steel bolts, which have better compressive and shear resistance than the surrounding resin. The second bolts 220 should be high-strength bolts or stainless steel bolts, which have better compressive and shear resistance than the surrounding resin. The strength of the first bolts 140 and the second bolts 220 should be designed to bear the lateral load transmitted by the lateral support structure.

[0036] When installing the liquid tank transverse support structure 1 of the present application, before the liquid tank 3 is mounted on the liquefied gas ship 2, the liquid tank partial laminated timber 130 is connected to the liquid tank partial laminated timber fixing structure 120 via first bolts 140, forming the liquid tank 3 with the liquid tank partial laminated timber 130. The liquid tank 3 is then assembled to the hull, and the hull support section 20 is then formed. The hull partial laminated timber 230 is selected to an appropriate size based on the gap between the hull support section 20 and the liquid tank partial laminated timber 130.

[0037] Compared with existing technologies:

[0038] First, in this application, bolts are used to connect the tank laminated wood 130 and the tank 3, and the hull laminated wood 230 and the hull. Bolts have good compressive and shear resistance and are particularly suitable for tanks 3 carrying ultra-low temperature liquid cargo and for situations where the thermal expansion coefficient of the tank 3 material is large. This avoids stress on the epoxy caused by shrinkage deformation.

[0039] Secondly, the clearance adjustment function of the liquid tank transverse support structure 1 of the present application is handled by the hull side, allowing all components at the end of the liquid tank 3 to be completed before assembly on board. This avoids the high stress risk of epoxy, and the laminated wood can be installed before the entire liquid tank 3 is assembled on board, thus ensuring the integrity of the liquid tank 3 and the insulation. The hull section laminated wood 230 added to the hull is used to adjust the straightness and flatness between the hull and the liquid tank 3. This part can be pre-placed on the bottom of the ship / on top of the liquid tank 3 and installed after the liquid tank 3 is assembled on board / the main deck 21 is closed. The connection method is bolts, which is convenient for installation and has a short working cycle for installers in a small space.

[0040] Compared to conventional plate-insulated tanks, which typically have dozens of supporting structures, each with multiple insulation panels near each supporting structure. These panels must be installed in a confined space after the entire tank is assembled. However, the present invention only requires the installation of a single supporting structure (hull support portion 20) in a confined space. Bolt installation is more convenient than epoxy installation and eliminates the need to wait for epoxy to cure.

[0041] refer to Figure 1 In some embodiments, all end surfaces of the tank portion laminated wood 130 abut against end surfaces of the hull portion laminated wood 230 .

[0042] The end faces of the tank section laminated timbers 130 and the end faces of the hull section laminated timbers 230 face each other laterally. In this application, the entire end face of the tank section laminated timbers 130 abuts against the hull section laminated timbers 230. That is, the orthographic projection of the end face of the tank section laminated timbers 130 onto the end face of the hull section laminated timbers 230 falls within the contour of the end face of the hull section laminated timbers 230. This effectively transfers the loads generated by the weight and movement of the tank 3 to the hull support section 20, and subsequently to the hull.

[0043] Furthermore, the end surface area of ​​the tank portion laminated timber 130 is smaller than the end surface area of ​​the hull portion laminated timber 230. Thus, when the tank portion laminated timber 130 and the hull portion laminated timber 230 are laterally abutted, the end surface of the tank portion laminated timber 130 can more easily and completely abut against the hull portion laminated timber 230.

[0044] Specifically, since the end surface of the hull laminated wood 230 is larger, the tank laminated wood 130 can easily abut against the hull laminated wood 230. Therefore, the accuracy requirement for the transverse position of the tank laminated wood 130 and the hull laminated wood 230 is greatly reduced, thereby reducing process costs and facilitating installation.

[0045] In some embodiments, such as Figure 3As shown, the liquid tank transverse support structure 1 of the present application further includes a metal gasket 30, which is provided between the hull portion laminated wood 230 and the liquid tank portion laminated wood 130. The metal gasket 30 can reduce the friction between the hull portion laminated wood 230 and the liquid tank portion laminated wood 130, thereby accommodating the longitudinal movement of the liquid tank 3.

[0046] Furthermore, the metal gasket 30 is fixed to the end surface of the tank portion laminated wood 130 or the hull portion laminated wood 230 .

[0047] Taking the metal gasket 30 fixed to the end face of the hull part laminated wood 230 as an example, optionally, the metal gasket 30 is bonded to the end face of the hull part laminated wood 230; optionally, the metal gasket 30 is fixed to the hull part laminated wood 230 by bolts; optionally, the metal gasket 30 is clipped and fixed in the groove 121 on the end face of the hull part laminated wood 230.

[0048] The metal gasket 30 is assembled with the liquid tank part laminated wood 130 or the hull part laminated wood 230 in advance, which is convenient for installation; and after the liquid tank part laminated wood 130 and the hull part laminated wood 230 are installed, the metal gasket 30 is also in place, ensuring the accuracy of the position of the metal gasket 30.

[0049] In some embodiments, the tank portion laminated timber 130 and the hull portion laminated timber 230 each include multiple laminated timbers stacked in layers. After the tank 3 is loaded onto the vessel, the number and / or size of the laminated timbers in the hull portion laminated timber 230 can be adjusted based on the gap size, thereby achieving the desired adjustment.

[0050] Optionally, the thicknesses of the plurality of laminated woods in the tank portion laminated wood 130 are the same or different. Optionally, the thicknesses of the plurality of laminated woods in the hull portion laminated wood 230 are the same or different.

[0051] In addition, when the laminated wood 130 of the liquid tank portion or the laminated wood 230 of the hull portion is damaged, the above design can facilitate the replacement of the damaged laminated wood, thereby reducing costs.

[0052] In some embodiments, reference Figure 1 、 Figure 2 、 Figure 4 The liquid tank laminated wood fixing structure 120 is provided with a groove 121, and the liquid tank partial laminated wood 130 is embedded in the groove 121; the side wall cut of the first bolt connection groove 121 is in contact with or connected to the liquid tank partial laminated wood 130.

[0053] Embedding the partially laminated wood 130 in the groove 121 means that at least a portion of the partially laminated wood 130 is embedded in the groove 121. Specifically, the partially laminated wood 130 can be fully embedded in the groove 121, with its end surface flush with the end surface of the groove 121. Alternatively, the partially laminated wood 130 can be partially embedded in the groove 121, with its end surface extending beyond the end surface of the groove 121. The first bolt 140 connects the sidewall of the groove 121 and the partially laminated wood 130 in a direction perpendicular to the lateral direction. The strength of the laminated wood fixing structure 120 should be sufficient to transmit lateral forces and frictional forces.

[0054] In some embodiments, the laminated wood fixing structure 120 is welded to the first metal structure 110 or integrally formed. Preferably, the laminated wood fixing structure 120 is made of the same material as the first metal structure 110. The bends in the sidewalls of the groove 121 are rounded to avoid stress concentration. Preferably, the laminated wood fixing structure 120 is integrally formed with the first metal structure 110. When welding the first metal structure 110 to the tank body, full penetration should be ensured to ensure strength.

[0055] In some embodiments, a flat plate (not shown) is further provided between the second metal structure 210 and the laminated wood 230 of the hull portion. The flat plate is used to adjust the flatness of the contact surface between the second metal structure 210 and the laminated wood 230 of the hull portion.

[0056] The flat plate has a relatively small thickness, smaller than the thickness of the laminated wood in the hull portion laminated wood 230, thereby facilitating its insertion. Optionally, the flat plate is connected to the hull portion laminated wood 230 together with the laminated wood 230 via a second bolt 220. Optionally, the flat plate has a notch with a diameter larger than that of the second bolt 220, so that the flat plate is merely clamped between the hull portion laminated wood 230 and the second metal structure 210, with the second bolt 220 inserted into the notch and having a clearance fit within the notch.

[0057] The flat plate is made of a material with a certain degree of hardness, such as stainless steel. Both sides of the flat plate are flat, thereby reducing the flatness requirements for the second metal structure 210 and the surface flatness requirements for the hull laminated wood 230. This ensures surface-to-surface contact between the second metal structure 210 and the hull laminated wood 230.

[0058] In some embodiments, such as Figure 1 As shown, the second metal structure 210 is connected to the lower surface of the main deck 21 of the liquefied gas ship 2 and extends longitudinally. The second metal structure 210 is fixed to the main deck 21 of the hull and has a strength capable of limiting the rolling motion between the liquid tank 3 and the hull.

[0059] Optionally, the second metal structure 210 includes a connecting plate 211, a vertical plate 212, and a plurality of reinforcing ribs 213. The connecting plate 211 is parallel to the transverse direction and connected to the main deck 21 of the liquefied gas carrier 2, while the vertical plate 212 is parallel to the longitudinal direction. The reinforcing ribs 213 connect the vertical plate 212 and the connecting plate 211. The second bolt passes through the vertical plate 212 and is connected to the laminated wood 230 of the hull.

[0060] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0061] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0063] Finally, it should be noted that the various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A liquid tank lateral support structure, characterized in that: include: The liquid tank support portion includes a first metal structure provided on the liquid tank, a liquid tank laminated wood fixing structure fixed to the first metal structure, and a portion of the liquid tank laminated wood fixed to the liquid tank laminated wood fixing structure by a first bolt; The hull supporting part includes a second metal structure fixed to the hull of the liquefied gas ship, and a hull part laminated wood connected to the second metal structure by a second bolt, wherein the end surface of the hull part laminated wood abuts the end surface of the liquid tank part laminated wood in the transverse direction.

2. The liquid tank transverse support structure according to claim 1, characterized in that: The end surfaces of the laminated wood of the liquid tank portion are all in contact with the end surfaces of the laminated wood of the hull portion.

3. The liquid tank transverse support structure according to claim 2, characterized in that: The area of ​​the end surface of the laminated wood of the tank portion is smaller than the area of ​​the end surface of the laminated wood of the hull portion.

4. The liquid tank transverse support structure according to claim 1, characterized in that: It also includes a metal gasket, which is arranged between the laminated wood of the hull part and the laminated wood of the liquid tank part.

5. The liquid tank transverse support structure according to claim 4, characterized in that: The metal gasket is fixed to the end surface of the laminated wood of the liquid tank part or the laminated wood of the hull part.

6. The liquid tank transverse support structure according to claim 1, characterized in that: The tank portion laminated wood includes a plurality of laminated woods arranged in layers, and the hull portion laminated wood includes a plurality of laminated woods arranged in layers.

7. The liquid tank transverse support structure according to claim 1, characterized in that: The liquid tank partial laminated wood fixing structure is provided with a groove, and the liquid tank partial laminated wood is embedded in the groove; the side wall of the first bolt connection groove abuts or is connected to the liquid tank partial laminated wood.

8. The liquid tank transverse support structure according to claim 1, characterized in that: The laminated wood fixing structure of the liquid tank portion is connected to the first metal structure by welding, or is integrally formed.

9. The liquid tank transverse support structure according to claim 1, characterized in that: A flat plate is further provided between the second metal structure and the laminated wood of the hull portion, and the flat plate is used to adjust the flatness of the contact surface between the second metal structure and the laminated wood of the hull portion.

10. The liquid tank transverse support structure according to claim 1, characterized in that: The second metal structure is connected to the lower surface of the main deck of the liquefied gas carrier and extends longitudinally.

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