Method for constructing methanol cabin sections of engine room shed of methanol-powered container ship

Abstract

The invention provides a method for constructing a methanol cabin section of a methanol power container ship engine room shed. The method comprises the steps that the methanol cabin section is divided into a first platform middle assembly, a second platform middle assembly and a top enclosure bulkhead small assembly; the first platform middle assemblage, the second platform middle assemblage and the top enclosure bulkhead small assemblage are built; and the first platform middle assembly and the second platform middle assembly are overturned to normal states, the first platform middle assembly is positioned and placed on the jig frame, then the second platform middle assembly is positioned and installed on the first platform middle assembly, and finally the top enclosure bulkhead small assembly is installed on the top of the second platform middle assembly. By the adoption of the method, smooth subsection building can be achieved, subsection building difficulty is lowered, subsection building precision is guaranteed, and construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of ship construction, and in particular to a method for constructing methanol tank sections of a cabin shed of a methanol-powered container ship. Background Art

[0002] Methanol-powered container ships are an emerging environmentally friendly green energy source. Nearly half of the newly built dual-fuel powered container ships use methanol power. Methanol-powered container ships are designed with methanol daily cabins in the engine room shed area, and their structural design is different from that of conventional container ships. Conventional container ship engine room sheds generally only include bow and stern bulkheads, port and starboard bulkheads and platform plates. When built in sections, the stern bulkhead, port and starboard bulkheads are installed in reverse with the platform plate as the base surface; while the structure of the methanol tank of a methanol-powered container ship is more complicated, and the above-mentioned conventional engine room shed segment construction method is not suitable for the construction of methanol tank segments. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the related art, an object of the present invention is to provide a method for constructing a methanol tank section of an engine room shed of a methanol-powered container ship.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a method for constructing methanol tank sections of a methanol-powered container ship engine room shed, the method comprising:

[0005] Divide the methanol tank into the first platform middle assembly, the second platform middle assembly and the top wall small assembly;

[0006] The first platform middle assembly, the second platform middle assembly and the top enclosure wall small assembly are constructed respectively;

[0007] Flip the assembly in the first platform and the assembly in the second platform to the normal state respectively, first position the assembly in the first platform on the tire frame, then position and install the assembly in the second platform on the assembly in the first platform, and finally install the top wall group on the top of the assembly in the second platform.

[0008] Optionally, the first platform center assembly includes a first platform plate, a first longitudinal void tank secondary center assembly, a bottom void tank secondary center assembly, a first reverse top longitudinal and transverse structure and a first longitudinal and transverse bulkhead structure, and the first longitudinal and transverse bulkhead structure includes a longitudinal bulkhead subgroup a, a longitudinal bulkhead subgroup b, a transverse bulkhead subgroup a and a transverse bulkhead subgroup b.

[0009] Optionally, the construction steps assembled in the first platform are: marking a positioning line on the first platform plate;

[0010] Install the first longitudinal void tank secondary middle assembly, the first anti-top longitudinal and transverse structure and the longitudinal bulkhead subassembly a on the first platform plate according to their corresponding positioning lines, and the first longitudinal void tank secondary middle assembly and the longitudinal bulkhead subassembly a are arranged opposite to each other;

[0011] Flip the bottom void tank secondary middle assembly into a horizontal state and install it between the first longitudinal void tank secondary middle assembly and the longitudinal bulkhead small assembly a;

[0012] The transverse bulkhead subassembly a, the transverse bulkhead subassembly b and the longitudinal bulkhead subassembly b are continuously installed on the first platform plate according to their respective corresponding positioning lines to form the first platform middle assembly.

[0013] Optionally, the deviation between the actual divided position of the positioning line and the theoretical position is less than or equal to ±2 mm.

[0014] Optionally, the deviation between the actual installation positions of the first longitudinal void compartment secondary assembly, transverse bulkhead subgroup a, transverse bulkhead subgroup b, longitudinal bulkhead subgroup b and longitudinal bulkhead subgroup a and their respective positioning lines is less than or equal to ±2 mm.

[0015] Optionally, when installing the bottom void compartment secondary middle assembly, the structural gap between the bottom void compartment secondary middle assembly and the first longitudinal void compartment secondary middle assembly is less than or equal to 3 mm, and the structural gap between the bottom void compartment secondary middle assembly and the longitudinal bulkhead subassembly a is less than or equal to 3 mm.

[0016] Optionally, the first longitudinal void compartment secondary assembly includes a longitudinal void compartment bottom plate, a longitudinal void compartment wall plate, a longitudinal void compartment reinforcement material and a longitudinal void compartment longitudinal and transverse structure; the first longitudinal void compartment secondary assembly construction steps are: firstly placing the longitudinal void compartment bottom plate on a tire frame and marking a positioning line on the longitudinal void compartment bottom plate;

[0017] Then, the longitudinal void compartment reinforcement material and the longitudinal void compartment longitudinal and transverse structure are installed on the longitudinal void compartment bottom plate according to the positioning line to form a longitudinal void compartment substructure;

[0018] Then, a positioning line is drawn on the longitudinal void bulkhead, the longitudinal void subassembly is turned 180 degrees, and is buckled and installed on the longitudinal void bulkhead according to the positioning line on the longitudinal void bulkhead to form the first longitudinal void subassembly.

[0019] Optionally, the horizontal deviation of the four corners of the first longitudinal void compartment secondary assembly and the bottom void compartment secondary assembly is less than or equal to ±3mm, the length and width deviations are less than or equal to ±3mm, the height deviation is less than or equal to ±2mm, and the twisting deviation is less than or equal to 4mm.

[0020] As described above, the method for constructing methanol tank sections of a methanol-powered container ship engine room shed of the present invention has the following beneficial effects: the present invention divides the methanol tank sections into multiple intermediate assembly structures and constructs them separately, and each intermediate assembly structure is assembled on the tire frame in sequence during the final assembly. By adopting the method of this embodiment, the smooth construction of the sections can be achieved, the difficulty of the construction of the sections can be reduced, and the construction accuracy of the sections can be ensured. In addition, the present invention performs the assembly in a normal manner, so the flat welding operation can be adopted. This construction method is not only convenient, but also improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the methanol tank section assembly in an embodiment of the present invention.

[0022] Figure 2 Shown is a schematic diagram of the first platform assembled in an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of an exploded view of the first platform assembled in an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of the assembly in the first longitudinal void compartment secondary in an embodiment of the present invention.

[0025] Figure 5 Shown is a schematic diagram of the assembly in the bottom void tank secondary in an embodiment of the present invention.

[0026] Figure 6 Shown is a schematic diagram of the second platform assembled in an embodiment of the present invention.

[0027] Figure 7 It is a schematic diagram of an exploded view of the second platform assembled in an embodiment of the present invention.

[0028] Component number description

[0029] 1. First platform plate; 2. First longitudinal void compartment secondary middle assembly; 21. Longitudinal void compartment bottom plate; 22. Longitudinal void bulkhead plate; 23. Longitudinal void compartment longitudinal and transverse structure; 3. Bottom void compartment secondary middle assembly; 31. Bottom void compartment top plate; 32. Bottom void compartment longitudinal and transverse structure; 4. First reverse top longitudinal and transverse structure; 5. Longitudinal bulkhead sub-assembly a; 51. Longitudinal bulkhead sub-assembly b; 52. Transverse bulkhead sub-assembly a; 53. Transverse bulkhead sub-assembly b; 6. Second platform plate; 7. Second longitudinal void compartment secondary middle assembly; 8. Second reverse top longitudinal and transverse structure; 9. Longitudinal bulkhead sub-assembly c; 91. Longitudinal bulkhead sub-assembly d; 92. Longitudinal bulkhead sub-assembly e; 93. Longitudinal bulkhead sub-assembly f; 94. Transverse bulkhead sub-assembly c; 95. Transverse bulkhead sub-assembly d; 100. First platform middle assembly; 200. Second platform middle assembly; 300. Top enclosure sub-assembly. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0031] For example, when describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic view is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0032] For ease of description, spatial relational terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature shown in the drawings to other elements or features. It will be understood that these spatial relational terms are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or there can be one or more intervening layers. As used herein, "between..." means including the end point values.

[0033] In the context of the present application, a structure in which a first feature is described as being "above" a second feature may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0034] It should be noted that the illustrations provided in this embodiment are only used to illustrate the basic concept of the present invention in a schematic manner, and therefore the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0035] like Figure 1 As shown, this embodiment provides a method for constructing a methanol tank section of a cabin shed of a methanol-powered container ship, the method comprising:

[0036] The methanol tank is divided into sections according to its structural characteristics.

[0037] The methanol tank is divided into the first platform middle assembly 100, the second platform middle assembly 200 and the top wall small assembly 300. After the division of each structure is completed, each structure is constructed separately.

[0038] like Figure 2 and Figure 3 As shown, the first platform middle assembly 100 includes a first platform plate 1, a first longitudinal empty compartment secondary middle assembly 2, a bottom empty compartment secondary middle assembly 3, a first inverted longitudinal and transverse structure 4, and a first longitudinal and transverse bulkhead structure. The first platform plate 1 includes a plurality of panels. When constructing the first platform plate 1, the plurality of panels are first placed on a tire frame, and then the plurality of panels are fixed together by welding. After the first platform plate 1 is constructed, a positioning line is drawn on the first platform plate 1, and the positioning line is used to locate the first longitudinal empty compartment secondary middle assembly 2, the first inverted longitudinal and transverse structure 4, and the first longitudinal and transverse bulkhead structure. Since the first platform plate 1 has a manufacturing error, when drawing a line on the first platform plate 1, the deviation between the actual drawn positioning line and the theoretical positioning line should be ≤±2mm.

[0039] The first longitudinal and transverse bulkhead structure includes a longitudinal bulkhead subassembly a5, a longitudinal bulkhead subassembly b51, a transverse bulkhead subassembly a52 and a transverse bulkhead subassembly b53. Specifically, the first longitudinal void compartment secondary middle assembly 2 and the longitudinal bulkhead subassembly a5 are first turned 90 degrees to be vertically arranged, and then the first longitudinal void compartment secondary middle assembly 2 and the longitudinal bulkhead subassembly a5 are buckled and installed on the first platform plate 1 according to the corresponding positioning lines, and the two are arranged relative to each other; for example, the positioning process of the first longitudinal void compartment secondary middle assembly 2 is as follows: a positioning mark line is drawn on the first longitudinal void compartment secondary middle assembly 2, and the positioning mark line on the first longitudinal void compartment secondary middle assembly 2 is aligned with the positioning line on the first platform plate 1 to position the first longitudinal void compartment secondary middle assembly 2. Among them, the deviation between the actual installation position of the first longitudinal void compartment secondary middle assembly 2 and the longitudinal bulkhead subassembly a5 and their respective positioning lines should be ≤±2mm.

[0040] After the installation of the first longitudinal void compartment secondary center assembly 2 and the longitudinal bulkhead subassembly a5 is completed, the bottom void compartment secondary center assembly 3 is turned over to a horizontal state and installed between the first longitudinal void compartment secondary center assembly 2 and the longitudinal bulkhead subassembly a5. The centerline deviation between the bottom void compartment secondary center assembly 3 and the first longitudinal void compartment secondary center assembly 2 and the longitudinal bulkhead subassembly a5 is ≤±2mm. A gap is allowed between the bottom void compartment secondary center assembly 3 and the first longitudinal void compartment secondary center assembly 2 and the structural gap is ≤3mm. A gap is allowed between the bottom void compartment secondary center assembly 3 and the longitudinal bulkhead subassembly a5 and the structural gap is ≤3mm. After the bottom void compartment secondary center assembly 3 is in place, intermittent welding should be carried out immediately. The length of the intermittent welding weld should be ≥50mm, and the distance between two adjacent welds should be ≤250mm.

[0041] Finally, the transverse bulkhead sub-assembly a52, the transverse bulkhead sub-assembly b53 and the longitudinal bulkhead sub-assembly b51 are continuously installed on the first platform plate 1 according to their corresponding positioning lines. The deviation between the actual position of the transverse bulkhead sub-assembly a52, the transverse bulkhead sub-assembly b53 and the longitudinal bulkhead sub-assembly b51 and the positioning line should be ≤±2mm. After the installation of the transverse bulkhead sub-assembly a52, the transverse bulkhead sub-assembly b53 and the longitudinal bulkhead sub-assembly b51 is completed, the first platform middle assembly 100 is formed.

[0042] like Figure 3 and Figure 4 As shown, in this embodiment, the first longitudinal void compartment secondary middle assembly 2 includes a longitudinal void compartment bottom plate 21, a longitudinal void compartment wall plate 22, a longitudinal void compartment reinforcement material and a longitudinal void compartment transverse structure 23. The construction process of the first longitudinal void compartment secondary middle assembly 2 is as follows: firstly, the longitudinal void compartment bottom plate 21 is placed on the tire frame and a positioning line is drawn on the longitudinal void compartment bottom plate 21, and then the longitudinal void compartment reinforcement material and the longitudinal void compartment transverse structure 23 are installed on the longitudinal void compartment bottom plate 21 according to the positioning line to form a longitudinal void compartment subassembly, and the deviation between the installation position of the longitudinal void compartment reinforcement material and the longitudinal void compartment transverse structure 23 and the positioning line should be ≤±2mm; then, a positioning line is drawn on the longitudinal void compartment wall plate 22, the longitudinal void compartment subassembly is turned 180 degrees, and is buckled and installed on the longitudinal void compartment wall plate 22 according to the positioning line on the longitudinal void compartment wall plate 22, thereby forming the first longitudinal void compartment secondary middle assembly 2. Among them, due to the existence of processing errors and assembly errors in the processing and construction process, for example, deformation problems may occur due to stress concentration during welding and assembly, so precision measurement is required after the construction of the assembly 2 in the first longitudinal compartment secondary is completed. The horizontal deviation of the four corners of the assembly 2 in the first longitudinal compartment secondary is ≤±3mm, the length and width deviation is ≤±3mm, the height deviation is ≤±2mm, and the distortion deviation is ≤4mm.

[0043] like Figure 3 and Figure 5 As shown, the bottom void compartment secondary middle assembly 3 includes a bottom void compartment top plate 31, a bottom void compartment reinforcement material, and a bottom void compartment longitudinal and transverse structure 32. The construction process of the bottom void compartment secondary middle assembly 3 is: firstly, the bottom void compartment top plate 31 is placed on the tire frame, and a positioning line is drawn on the bottom void compartment top plate 31; then, the bottom void compartment reinforcement material and the bottom void compartment longitudinal and transverse structure 32 are installed on the bottom void compartment top plate 31 according to the positioning line to form the bottom void compartment secondary middle assembly 3. Among them, the deviation between the installation position of the bottom void compartment reinforcement material and the bottom void compartment longitudinal and transverse structure 32 and the positioning line should be less than ±2mm, and the horizontal deviation of the four corners of the bottom void compartment secondary middle assembly 3 is ≤±3mm, the length and width deviation is ≤±3mm, the height deviation is ≤±2mm, and the distortion deviation is ≤4mm.

[0044] like Figure 6 and Figure 7As shown, the second platform middle assembly 200 includes a second platform plate 6, a second longitudinal void tank secondary middle assembly 7, a second reverse top longitudinal and transverse structure 8, and a second longitudinal and transverse bulkhead structure. Among them, the structure and construction method of the second platform plate 6 are the same as those of the first platform plate 1; the structure and construction method of the second longitudinal void tank secondary middle assembly 7 are the same as those of the first longitudinal void tank secondary middle assembly 2; the structure and construction method of the second reverse top longitudinal and transverse structure 8 are the same as those of the first reverse top longitudinal and transverse structure 4.

[0045] The second longitudinal and transverse bulkhead structure includes longitudinal bulkhead sub-unit c9, longitudinal bulkhead sub-unit d91, longitudinal bulkhead sub-unit e92, longitudinal bulkhead sub-unit f93, transverse bulkhead sub-unit c94 and transverse bulkhead sub-unit d95. When installing the second longitudinal and transverse bulkhead structure, firstly turn the longitudinal bulkhead sub-unit c9, longitudinal bulkhead sub-unit d91 and longitudinal bulkhead sub-unit e92 into a vertical state and install them on the second platform plate 6 according to their corresponding positioning lines. The second longitudinal void tank secondary middle unit 7, longitudinal bulkhead sub-unit c9, longitudinal bulkhead sub-unit d91 and longitudinal bulkhead sub-unit e92 are arranged in sequence from left to right in the figure, and the deviation between the installation position of the longitudinal bulkhead sub-unit c9, longitudinal bulkhead sub-unit d91 and longitudinal bulkhead sub-unit e92 and their corresponding positioning lines should be less than ±2mm.

[0046] Finally, the longitudinal bulkhead sub-unit f93, transverse bulkhead sub-unit c94 and transverse bulkhead sub-unit d95 are to be installed on the second platform plate 6 according to their corresponding positioning lines. The deviation between the actual position of the longitudinal bulkhead sub-unit f93, transverse bulkhead sub-unit c94 and transverse bulkhead sub-unit d95 and the positioning line is to be ≤±2mm.

[0047] After the construction of the first platform assembly 100 and the second platform assembly 200 is completed, the general assembly positioning lines are first drawn on the tire frame and the first platform assembly 100, and then the first platform assembly 100 is turned over 180 degrees to a normal state and placed on the tire frame, and the first platform assembly 100 is adjusted according to the general assembly positioning lines on the tire frame, so that the general assembly positioning lines on the first platform assembly 100 and the general assembly positioning lines on the tire frame are aligned. Similarly, the second platform assembly 200 is then turned over 180 degrees to a normal state and installed on the first platform assembly 100, and finally the top wall subassembly 300 is horizontally installed on the top of the second platform assembly 200.

[0048] This method divides the methanol tank into multiple intermediate assembly structures and constructs them separately. During the final assembly, each intermediate assembly structure is assembled on a tire frame in turn. By adopting the method of this embodiment, the smooth construction of the sections can be achieved, the difficulty of the section construction can be reduced, and the construction accuracy of the sections can be ensured.

[0049] This method uses a normal method to carry out the overall assembly, so flat welding can be used. This construction method is not only convenient, but also improves construction efficiency.

[0050] The method divides the first longitudinal empty compartment into secondary intermediate assembly 2, the bottom empty compartment secondary intermediate assembly 3, and the second longitudinal empty compartment secondary intermediate assembly 7, so that multiple small groups can be combined and assembled in advance, thereby bringing forward the process that originally needs to be constructed in the general assembly stage to the intermediate assembly stage, and at the same time bringing forward the narrow space operation to the intermediate assembly stage, thereby improving the working environment and saving the production cycle of the segmented large assembly.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for constructing methanol tank sections of a methanol powered container ship engine room shed, characterized in that: The method comprises: Divide the methanol tank into the first platform middle assembly, the second platform middle assembly and the top wall small assembly; The first platform middle assembly, the second platform middle assembly and the top enclosure wall small assembly are constructed respectively; Flip the assembly in the first platform and the assembly in the second platform to the normal state respectively, first position the assembly in the first platform on the tire frame, then position and install the assembly in the second platform on the assembly in the first platform, and finally install the top wall group on the top of the assembly in the second platform.

2. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 1, characterized in that: The first platform center assembly includes a first platform plate, a first longitudinal void tank secondary center assembly, a bottom void tank secondary center assembly, a first reverse top longitudinal and transverse structure and a first longitudinal and transverse bulkhead structure, and the first longitudinal and transverse bulkhead structure includes a longitudinal bulkhead sub-assembly a, a longitudinal bulkhead sub-assembly b, a transverse bulkhead sub-assembly a and a transverse bulkhead sub-assembly b.

3. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 2, characterized in that: The construction steps assembled in the first platform are: marking a positioning line on the first platform plate; Install the first longitudinal void tank secondary middle assembly, the first anti-top longitudinal and transverse structure and the longitudinal bulkhead subassembly a on the first platform plate according to their corresponding positioning lines, and the first longitudinal void tank secondary middle assembly and the longitudinal bulkhead subassembly a are arranged opposite to each other; Flip the bottom void tank secondary middle assembly into a horizontal state and install it between the first longitudinal void tank secondary middle assembly and the longitudinal bulkhead small assembly a; The transverse bulkhead subassembly a, the transverse bulkhead subassembly b and the longitudinal bulkhead subassembly b are continuously installed on the first platform plate according to their respective corresponding positioning lines to form the first platform middle assembly.

4. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 3, characterized in that: The deviation between the actual position of the positioning line and the theoretical position is less than or equal to ±2mm.

5. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 3, characterized in that: The deviation between the actual installation position of the first longitudinal void tank secondary middle assembly, transverse bulkhead subassembly a, transverse bulkhead subassembly b, longitudinal bulkhead subassembly b and longitudinal bulkhead subassembly a and their respective positioning lines is less than or equal to ±2mm.

6. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 3, characterized in that: When installing the bottom void compartment secondary center assembly, the structural clearance between the bottom void compartment secondary center assembly and the first longitudinal void compartment secondary center assembly is less than or equal to 3mm, and the structural clearance between the bottom void compartment secondary center assembly and the longitudinal bulkhead subassembly a is less than or equal to 3mm.

7. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 2, characterized in that: The first longitudinal void compartment secondary assembly includes a longitudinal void compartment bottom plate, a longitudinal void compartment wall plate, a longitudinal void compartment reinforcement material and a longitudinal void compartment longitudinal and transverse structure; the first longitudinal void compartment secondary assembly construction steps are: firstly, placing the longitudinal void compartment bottom plate on a tire frame and marking a positioning line on the longitudinal void compartment bottom plate; Then, the longitudinal void compartment reinforcement material and the longitudinal void compartment longitudinal and transverse structure are installed on the longitudinal void compartment bottom plate according to the positioning line to form a longitudinal void compartment substructure; Then, a positioning line is drawn on the longitudinal void bulkhead, the longitudinal void subassembly is turned 180 degrees, and is buckled and installed on the longitudinal void bulkhead according to the positioning line on the longitudinal void bulkhead to form the first longitudinal void subassembly.

8. The method for constructing methanol tank sections of a methanol powered container ship engine room shed according to claim 2, characterized in that: The horizontal deviation of the four corners of the first longitudinal void compartment secondary assembly and the bottom void compartment secondary assembly is less than or equal to ±3mm, the length and width deviation is less than or equal to ±3mm, the height deviation is less than or equal to ±2mm, and the distortion deviation is less than or equal to 4mm.

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