Transverse supporting structure of liquid tank

Abstract

The invention 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 marine 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 the liquid tank on a liquefied gas ship is responsible for transmitting the lateral load generated by the deadweight and movement of the liquid tank. The traditional lateral support structure of the liquid tank includes: first, the metal structure of the hull; second, the metal structure of the liquid tank and laminated wood, and the laminated wood and the metal structure of the liquid tank are connected by 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) In order to adjust the straightness and flatness of the metal structure of the hull and the liquid tank, epoxy will be used as an adjustment structure. Therefore, the pouring of epoxy must be carried out after the liquid tank is assembled to the hull. This will result in the inability to ensure the insulation integrity of the liquid tank near the supporting structure, extend the docking period, and make it difficult to install multiple insulation parts in a small space. Summary of the invention

[0006] Based on this, it is necessary to propose a lateral support structure for the liquid tank, which 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 part, including a first metal structure arranged 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 part, 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, and the end surface of the hull partial laminated wood abuts against the end surface of the liquid tank partial laminated wood along the lateral 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 layers, and the hull portion laminated wood includes a plurality of laminated wood layers arranged in layers.

[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 cut of the first bolt connection groove abuts or is connected to the liquid tank partial laminated wood.

[0014] In some embodiments, the partial laminated wood fixing structure of the liquid tank is welded to the first metal structure, 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 the lower surface of the main deck of the liquefied gas carrier and extends in the longitudinal direction.

[0017] In this application, the laminated wood of the liquid tank and the liquid tank, and the laminated wood of the hull and the hull are connected by bolts. The bolts have good compression and shear resistance, and are particularly suitable for liquid tanks carrying ultra-low temperature liquid cargo and liquid tank materials with large thermal expansion coefficients. The stress generated on the epoxy due to shrinkage deformation is avoided.

[0018] Secondly, the gap adjustment function of the liquid tank transverse support structure of the present application is undertaken by the hull side, so that all components at the liquid tank end can 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, thereby ensuring the integrity of the liquid tank and insulation. The laminated wood added to the hull part is used to adjust the straightness and flatness between the hull and the liquid tank. This part can be placed on the bottom of the ship / on the top of the liquid tank in advance and installed when the liquid tank is assembled on board / the main deck is closed. The connection method is bolts, which is easy to install and the installation workers have a short working cycle in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the lateral support structure of the liquid tank 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 the direction of A.

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

[0022] Figure 4 for Figure 1 Side view of the C-direction of the liquid tank's lateral 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. Transverse support structure of liquid tank; 10. Support part of liquid tank; 110. First metal structure; 120. Laminated wood fixing structure of liquid tank; 121. Groove; 130. Laminated wood of liquid tank part; 140. First bolt; 20. Support part of hull; 210. Second metal structure; 211. Connecting plate; 212. Vertical plate; 213. Reinforcement plate; 220. Second bolt; 230. Laminated wood of hull part; 30. Metal gasket; 2. Liquefied gas ship; 21. Main deck; 3. Liquid tank. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present 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 the present 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 the present application.

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

[0029] As described in the background technology, in the existing lateral support structure of the liquid tank, 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] In view of the above problems, the present application proposes a liquid tank transverse support structure 1. The liquid tank transverse support structure 1 can be applied to the transverse positioning of the liquid tank 3 on the liquefied gas ship 2, and is responsible for transmitting the transverse load generated by the deadweight and movement of the liquid tank 3 to the hull of the liquefied gas ship 2, and realizing the limitation of the rolling movement between the liquid tank 3 and the hull.

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

[0032] refer to Figure 1 The liquid tank transverse support structure 1 includes a liquid tank support part 10 and a hull support part 20. The liquid tank support part 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 part laminated wood 130 fixed to the liquid tank laminated wood fixing structure 120 by a first bolt 140. Figure 1 , Figure 5As shown, the hull supporting 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, which may be the length or width direction of the hull of the liquefied gas ship 2. Correspondingly, the longitudinal direction refers to the vertical direction, which may be the height direction of the hull. Figure 1 In the 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 are integrally formed. The second metal structure 210 is fixed to the hull of the liquefied gas ship 2. The specific connection method is not limited.

[0035] In the present application, there are multiple first bolts 140 and multiple second bolts 220. The number of bolts needs to be calculated based on the maximum load that the support structure can bear. The first bolt 140 is made of high-strength bolts or stainless steel bolts, which have better compression and shear resistance than the surrounding resin. The second bolt 220 is made of high-strength bolts or stainless steel bolts, which have better compression and shear resistance than the surrounding resin. The strength of the first bolt 140 and the second bolt 220 should be designed to be able 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 placed on the liquefied gas ship 2, the liquid tank partial laminated wood 130 is connected to the liquid tank partial laminated wood fixing structure 120 by the first bolt 140 to form the liquid tank 3 with the liquid tank partial laminated wood 130. Then, after the liquid tank 3 is assembled to the hull, the hull support part 20 is formed. According to the gap between the hull support part 20 and the liquid tank partial laminated wood 130, the hull partial laminated wood 230 of a suitable size is selected.

[0037] Compared with existing technologies:

[0038] First, in the present application, the liquid tank laminated wood 130 and the liquid tank 3, and the hull laminated wood 230 and the hull are connected by bolts, which have good compression and shear resistance, and are particularly suitable for the liquid tank 3 carrying ultra-low temperature liquid cargo and the situation where the thermal expansion coefficient of the liquid tank 3 material is large. The stress generated on the epoxy due to shrinkage deformation is avoided.

[0039] Secondly, the gap adjustment function of the liquid tank transverse support structure 1 of the present application is undertaken by the hull side, so that all components at the end of the liquid tank 3 can be completed before being assembled on board. Thereby avoiding the high stress risk of epoxy and the laminated wood can be installed before the entire liquid tank 3 is assembled on board, thereby ensuring the integrity of the liquid tank 3 and insulation. The hull part laminated wood 230 added to the hull part is used to adjust the straightness and flatness between the hull and the liquid tank 3. This part can be placed in advance on the bottom of the ship / the top of the liquid tank 3, and installed when the liquid tank 3 is assembled on board / the main deck 21 is closed. The connection method is bolts, which is easy to install and the installation workers have a short working cycle in a small space.

[0040] Among them, compared with the liquid tanks using plate insulation in the prior art, a single liquid tank with plate insulation usually has dozens to dozens of supporting structures, and there are multiple insulation boards near a single supporting structure. These insulation boards need to be installed in a small space after the entire liquid tank is assembled. However, the present application only needs to complete the installation of a single supporting structure (hull support part 20) in a small space, and bolt installation is more convenient than epoxy and does not need to wait for epoxy molding.

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

[0042] The end face of the tank portion laminated wood 130 and the end face of the hull portion laminated wood 230 face each other in the transverse direction. In the present application, the end face of the entire tank portion laminated wood 130 is all against the hull portion laminated wood 230, that is, the orthographic projection of the end face of the tank portion laminated wood 130 on the end face of the hull portion laminated wood 230 falls within the end face contour of the hull portion laminated wood 230. In this way, the load generated by the deadweight and movement of the tank 3 can be well transmitted to the hull support part 20, and then to the hull.

[0043] Furthermore, the end surface area of ​​the tank portion laminated wood 130 is smaller than the end surface area of ​​the hull portion laminated wood 230. Thus, when the tank portion laminated wood 130 and the hull portion laminated wood 230 are laterally abutted, the end surface of the tank portion laminated wood 130 can be relatively conveniently completely abutted against the hull portion laminated wood 230.

[0044] Specifically, since the end surface of the hull laminated wood 230 is larger, the tank laminated wood 130 is easy to abut against the hull laminated wood 230. Therefore, the accuracy requirement for the lateral position of the tank laminated wood 130 and the hull laminated wood 230 is greatly reduced, thereby reducing the process cost and making installation convenient.

[0045] In some embodiments, Figure 3As shown, the liquid tank transverse support structure 1 of the present application further includes a metal gasket 30, which is arranged between the hull part laminated wood 230 and the liquid tank part laminated wood 130. The metal gasket 30 can reduce the friction between the hull part laminated wood 230 and the liquid tank part laminated wood 130, thereby adapting to 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 surface of the laminated wood 230 of the hull portion as an example, optionally, the metal gasket 30 is bonded to the end surface of the laminated wood 230 of the hull portion; optionally, the metal gasket 30 is fixed to the laminated wood 230 of the hull portion by bolts; optionally, the metal gasket 30 is snap-fixed in the groove 121 on the end surface of the laminated wood 230 of the hull portion.

[0048] The metal gasket 30 is assembled with the liquid tank laminated wood 130 or the hull laminated wood 230 in advance, which is convenient for installation; and after the liquid tank laminated wood 130 and the hull 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 wood 130 and the hull portion laminated wood 230 both include a plurality of laminated woods stacked in layers. After the tank 3 is loaded on board, the number and / or size of the laminated wood in the hull portion laminated wood 230 can be adjusted according to the size of the gap, thereby achieving the purpose of 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 part or the laminated wood 230 of the hull part 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 abutted or connected with the liquid tank partial laminated wood 130.

[0053] The embedding of the partial laminated wood 130 of the liquid tank into the groove 121 means that at least part of the partial laminated wood 130 of the liquid tank is embedded into the groove 121. Specifically, the partial laminated wood 130 of the liquid tank can be fully embedded into the groove 121, and its end surface is flush with the end surface of the groove 121. Alternatively, the partial laminated wood 130 of the liquid tank is partially embedded into the groove 121, and its end surface exceeds the end surface of the groove 121. The first bolt 140 connects the side wall of the groove 121 and the partial laminated wood 130 of the liquid tank in a direction perpendicular to the lateral direction. The strength of the liquid tank laminated wood fixing structure 120 should be able to meet the requirements of lateral force and friction force transmission.

[0054] In some embodiments, the liquid tank laminated wood fixing structure 120 is welded to the first metal structure 110, or is integrally formed. Preferably, the material of the liquid tank laminated wood fixing structure 120 is the same as that of the first metal structure 110. The bends of the side walls of the groove 121 are rounded to avoid stress concentration. Preferably, the liquid tank laminated wood fixing structure 120 and the first metal structure 110 are an integrally formed structure. When the first metal structure 110 is welded 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, and 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 thickness of the flat plate is small, which is smaller than the thickness of the laminated wood in the hull laminated wood 230, so that the flat plate can be easily inserted. Optionally, the flat plate is connected to the hull laminated wood 230 together with the hull laminated wood 230 by the second bolt 220. Optionally, the flat plate is provided with a notch having a diameter larger than the second bolt 220, and the flat plate is only clamped between the hull laminated wood 230 and the second metal structure 210, and the second bolt 220 is passed through the notch and matches the notch gap.

[0057] The plate is made of a material with a certain hardness, such as stainless steel. The two sides of the plate are flat, so that the flatness requirement of the surface of the second metal structure 210 is reduced, and the flatness requirement of the surface of the hull laminated wood 230 is reduced. In this way, the second metal structure 210 and the hull laminated wood 230 are in surface contact.

[0058] In some embodiments, 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 its strength can limit the rolling movement 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 ship 2, the vertical plate 212 is parallel to the longitudinal direction, and 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 clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it 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. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in 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 a central 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 a central element at the same time. 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 implementation method.

[0063] Finally, it should be noted that the various technical features of the above-described embodiments may be arbitrarily combined. 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 only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A liquid tank lateral support structure, characterized in that: include: The liquid tank support part 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 liquid tank part laminated wood fixed to the liquid tank laminated wood fixing structure by a first bolt; The hull supporting part comprises 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 second bolts, wherein the end surface of the hull part laminated wood abuts against the end surface of the liquid tank part laminated wood in the transverse direction.

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

3. The liquid tank lateral support structure according to claim 2, characterized in that: 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.

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

7. The liquid tank lateral 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 cut of the first bolt connection groove abuts or is connected to the liquid tank partial laminated wood.

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

9. The liquid tank lateral support structure according to claim 1, characterized in that: A flat plate is also 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 lateral 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 in the longitudinal direction.

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