Liquefied natural gas (LNG) ship liquid cargo tank connecting tool and using method

Abstract

The invention relates to an LNG ship liquid cargo tank connecting tool and a using method, and the LNG ship liquid cargo tank connecting tool comprises a connecting column and a connecting piece base; the connecting column is pre-anchored on the inner wall of the liquid cargo tank through resistance butt welding, and a first connecting hole is formed in the bottom of the connecting piece base; the connecting piece base is connected with the connecting column through the first connecting hole so that the connecting piece base can be installed on the inner wall of the liquid cargo tank. The mounting efficiency of the LNG ship liquid cargo tank connecting piece base can be improved, resistance butt-welding is adopted when the connecting columns are pre-anchored, the welding time is short, the heat productivity is small, and a paint coating on the back face of the liquid cargo tank wall is not damaged.

Description

Technical Field

[0001] The present application relates to the technical field of shipbuilding, and in particular to a LNG ship liquid cargo tank connection tooling and a method of using the same. Background Art

[0002] At present, the installation of the connector base of the LNG ship liquid cargo tank containment system is usually carried out by direct on-site welding with argon arc welding. The bottom of the connector base is anchored to the inner wall of the liquid cargo tank through the weld. The welding time is long, resulting in low installation efficiency. In addition, the accumulated heat from long-term welding can easily damage the paint coating attached to the back of the liquid cargo tank wall, resulting in a large amount of paint rework. The above disadvantages are more prominent due to the large number of connector bases that need to be installed on the actual ship. Summary of the invention

[0003] (1) Technical issues to be solved

[0004] The present application provides a LNG ship liquid cargo tank connection tooling and method to solve the current problems of low installation efficiency of the LNG ship liquid cargo tank connection base and the accumulated heat from welding over a long period of time that can easily damage the paint coating attached to the back of the liquid cargo tank wall.

[0005] (2) Technical solution

[0006] In the first aspect, the present application provides a LNG ship liquid cargo tank connection tooling, which includes a connecting column and a connecting piece base; the connecting column is pre-anchored to the inner wall of the liquid cargo tank by resistance welding, and a first connecting hole is provided at the bottom of the connecting piece base; the connecting piece base is connected to the connecting column through the first connecting hole, so that the connecting piece base is installed on the inner wall of the liquid cargo tank.

[0007] Furthermore, the first connecting hole matches the shape of the connecting column, so that the connecting member base is tightly connected to the connecting column.

[0008] Furthermore, the connecting column is a threaded column, and the first connecting hole is a threaded hole matching the threaded column; the connecting member base is threadedly connected to the connecting column.

[0009] Furthermore, a second connection hole is provided on the top of the connector base; the connector base is connected to the liquid cargo tank containment system through the second connection hole.

[0010] Furthermore, a size of the second connection hole is larger than a size of the first connection hole.

[0011] In a second aspect, the present application provides a method for using the above-mentioned LNG ship liquid cargo tank connection tooling, comprising:

[0012] Pre-anchor the connecting column to the inner wall of the cargo tank by resistance welding;

[0013] The connector base is connected to the connecting column through the first connecting hole so that the connector base is installed on the inner wall of the liquid cargo tank.

[0014] (3) Beneficial effects

[0015] The above technical solution of the present application has the following advantages:

[0016] The LNG ship cargo tank connection tool provided in the first aspect of the present application pre-anchors the connection column to the inner wall of the cargo tank, and the connector base is connected to the connection column through the first connection hole, so that the connector base is installed on the inner wall of the cargo tank. The structure is simple, the anchoring form is reliable, the operation is simple, and the processing is easy. The connector base can be quickly installed, and the installation efficiency of the LNG ship cargo tank connector base is improved. When pre-anchoring the connection column, resistance welding is used, which has a short welding time, low heat generation, and does not damage the paint coating on the back of the cargo tank wall.

[0017] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the LNG carrier cargo tank connection tooling provided for this application;

[0020] Figure 2 Schematic diagram of the connector base provided in this application installed on the inner wall of the liquid cargo tank.

[0021] Reference numerals: 1. connecting column; 2. connecting piece base; 21. first connecting hole; 22. second connecting hole; 3. inner wall of liquid cargo tank. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0026] At present, the installation of the connector base of the liquid cargo tank containment system of LNG ships usually adopts argon arc welding directly on site. The bottom of the connector base is anchored to the inner wall of the liquid cargo tank through the weld. The welding time is long, resulting in low installation efficiency. In addition, the accumulated heat from long-term welding can easily damage the paint coating attached to the back of the liquid cargo tank wall, resulting in a large amount of paint rework. The above disadvantages are more prominent due to the large number of connector bases that need to be installed on the actual ship.

[0027] In response to the above problems, the present application provides an LNG ship liquid cargo tank connection tooling and a method of use, which aims to improve the installation efficiency of the connector base and protect the paint on the back of the liquid cargo tank wall. It is suitable for LNG transport ship liquid cargo tanks, LNG fuel tanks of other ships, and land LNG storage tanks, etc.

[0028] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.

[0029] The present application embodiment provides a LNG ship liquid cargo tank connection tooling, such as Figure 1 As shown, the connecting tooling includes a connecting column 1 and a connecting piece base 2; the connecting column 1 is pre-anchored on the inner wall 3 of the liquid cargo tank by resistance welding, and a first connecting hole 21 is provided at the bottom of the connecting piece base 2; the connecting piece base 2 is connected to the connecting column 1 through the first connecting hole 21, so that the connecting piece base 2 is installed on the inner wall 3 of the liquid cargo tank.

[0030] In some embodiments, the first connection hole 21 matches the shape of the connection column 1 so that the connector base 2 is tightly connected to the connection column 1 .

[0031] In some embodiments, the connecting column 1 is a threaded column, and the first connecting hole 21 is a threaded hole matching the threaded column; the connector base 2 is threadedly connected to the connecting column 1 .

[0032] In some embodiments, a second connection hole 22 is provided on the top of the connector base 2; the connector base 2 is connected to the liquid cargo tank containment system through the second connection hole 22.

[0033] In some embodiments, a size of the second connection hole 22 is larger than a size of the first connection hole 21 .

[0034] In application, the connecting column 1 can be designed as a threaded column, and the first connecting hole 21 can be designed as a threaded hole matching the threaded column. Figure 2 As shown, the threaded column pre-anchored on the inner wall of the liquid cargo tank and the connector base 2 with a threaded hole at the bottom are connected by threaded cooperation, so that the connector base 2 can be quickly installed on the inner wall 3 of the liquid cargo tank.

[0035] The threaded column pre-anchored on the inner wall 3 of the cargo tank means that the threaded column is pre-welded at the installation position by resistance welding, and the welding time is short, the efficiency is high, and the heat generation is small. The connector base 2 with threaded holes at the bottom means that a threaded hole matching the pre-anchored threaded column is designed at the bottom of the base, and the two are fastened by screwing to achieve the fast installation of the connector base 2.

[0036] The embodiment of the present application also provides a method for using the above-mentioned LNG ship liquid cargo tank connection tooling, including:

[0037] Pre-anchor the connecting column to the inner wall of the cargo tank by resistance welding;

[0038] The connector base is connected to the connecting column through the first connecting hole so that the connector base is installed on the inner wall of the liquid cargo tank.

[0039] In application, the connection column 1 is welded to the inner wall 3 of the liquid cargo tank by resistance welding. The connection column 1 can be a threaded column of model M10, and the specific size can be adjusted according to the demand. The bottom of the connector base 2 is designed with a threaded hole of the model matching the pre-anchored threaded column, namely the first connection hole 21. The model of the threaded hole designed at the bottom of the connector base 2 is M10, and the specific size can be adjusted according to the demand.

[0040] like Figure 2 As shown, the threaded column pre-anchored on the inner wall 3 of the liquid cargo tank and the connector base 2 with a threaded hole at the bottom are connected by tightening the threads, so that the connector base 2 can be quickly installed on the inner wall 3 of the liquid cargo tank.

[0041] The LNG ship cargo tank connection tool and use method provided in the embodiment of the present application pre-anchors the connection column to the inner wall of the cargo tank, and the connection base is connected to the connection column through the first connection hole, so that the connection base is installed on the inner wall of the cargo tank. The structure is simple, the anchoring form is reliable, the operation is simple, and the processing is easy. The connection base can be quickly installed, and the installation efficiency of the LNG ship cargo tank connection base is improved. When pre-anchoring the connection column, resistance welding is used, which has a short welding time, low heat generation, and does not damage the paint coating on the back of the cargo tank wall.

[0042] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application.

[0043] It should be clear that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For the embodiments of the method, the relevant parts can refer to the partial description of the device embodiment (adopted according to the writing situation). The present application is not limited to the specific steps and structures described above and shown in the figures. In addition, for the sake of simplicity, a detailed description of known method technologies is omitted here.

[0044] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A LNG carrier liquid cargo tank connection tool, characterized in that: The connecting tooling includes a connecting column and a connecting piece base; the connecting column is pre-anchored on the inner wall of the liquid cargo tank by resistance welding, and a first connecting hole is provided at the bottom of the connecting piece base; the connecting piece base is connected to the connecting column through the first connecting hole so that the connecting piece base is installed on the inner wall of the liquid cargo tank.

2. The LNG carrier liquid cargo tank connection tooling according to claim 1, characterized in that: The first connection hole matches the shape of the connection column, so that the connection member base is tightly connected to the connection column.

3. The LNG carrier liquid cargo tank connection tooling according to claim 1, characterized in that: The connecting column is a threaded column, and the first connecting hole is a threaded hole matching the threaded column; the connecting member base is threadedly connected to the connecting column.

4. The LNG carrier liquid cargo tank connection tool as claimed in claim 1, characterized in that: A second connection hole is provided on the top of the connector base; the connector base is connected to the liquid cargo tank containment system through the second connection hole.

5. The LNG carrier liquid cargo tank connection tool as claimed in claim 4, characterized in that: The size of the second connection hole is larger than that of the first connection hole.

6. A method for using the LNG ship liquid cargo tank connection tooling according to any one of claims 1 to 5, characterized in that: include: Pre-anchor the connecting column to the inner wall of the cargo tank by resistance welding; The connector base is connected to the connecting column through the first connecting hole so that the connector base is installed on the inner wall of the liquid cargo tank.

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