Methanol cabin construction method

Abstract

The invention provides a methanol cabin construction method. The methanol cabin construction method comprises the specific steps that a bow compartment and a stern compartment are divided from a methanol cabin in the bow and stern direction; the methanol cabin is divided into a top section and a bottom section in the height direction of the ship, the top end of the bow compartment is connected with the top section, the bottom end of the bow compartment is connected with the bottom section, the top end of the stern compartment is connected with the top section, and the bottom end of the stern compartment is connected with the bottom section; the bottom section is hoisted to a preset position, then the bow compartment and the stern compartment are hoisted to the bow end and the stern end of the bottom section to be assembled, finally, the top section is hoisted between the bow compartment and the stern compartment, and the bow end and the stern end of the top section are assembled with the bow compartment and the stern compartment respectively. According to the method, by optimizing the division and construction scheme of the methanol cabin, it is ensured that the guide rails on the bow and stern compartments can be completely installed, the construction period of the methanol cabin can be effectively shortened, and the product construction efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of methanol fuel tank construction, and particularly to a method for constructing a methanol tank. Background Art

[0002] When constructing a methanol dual-fuel container ship, the methanol tanks are arranged in the cargo hold area. The fore and aft bulkheads of the methanol tanks also serve the functions of the cargo hold loading system, and outfitting parts such as guide rails and hatch cover accessories are arranged on the fore and aft bulkheads. In the currently implemented solutions, the methanol tanks are usually split into two upper and lower sub-assemblies for construction (as shown in Figure 1 ), so the guide rails of the cargo hold are disconnected and fixed to the two upper and lower sub-assemblies respectively. At this time, the two sections of the cargo hold guide rails need to spend time in subsequent construction for positioning to ensure the straightness accuracy of the guide rails, thus affecting the construction efficiency. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the related art, the purpose of the present invention is to provide a method for constructing a methanol tank to solve the problem of low construction efficiency of methanol tanks in the related art.

[0004] To achieve the above purpose and other related purposes, the present invention provides a method for constructing a methanol tank. The specific steps include: dividing a fore compartment and an aft compartment from the methanol tank along the fore and aft direction; dividing a top section and a bottom section from the methanol tank along the ship height direction, wherein the top end of the fore compartment is connected to the top section, the bottom end of the fore compartment is connected to the bottom section, the top end of the aft compartment is connected to the top section, and the bottom end of the aft compartment is connected to the bottom section; first hoisting the bottom section to a predetermined position, then hoisting the fore compartment and the aft compartment to the fore and aft ends of the bottom section respectively for assembly, and finally hoisting the top section between the fore compartment and the aft compartment, and assembling the fore and aft ends of the top section with the fore compartment and the aft compartment respectively.

[0005] Optionally, the steps of the method further include: splitting the main deck into a fore deck, a middle deck, and an aft deck, dividing the fore deck into the fore compartment, dividing the middle deck into the top section, and dividing the aft deck into the aft compartment.

[0006] Optionally, the joints between the fore deck and the middle deck and the joints between the aft deck and the middle deck are both set outside the enclosure of the superstructure.

[0007] Optionally, the top section includes a methanol collection tank. The construction principle of the methanol collection tank is based on the special coating requirements, and the structural integrity of the methanol collection tank is ensured during construction. Based on the construction principle of the methanol collection tank, the structures on the fore and aft compartments that are connected to the fore and aft ends of the methanol collection tank are split and incorporated into the construction process of the top section.

[0008] Optionally, the size of the structure split from the fore peak tank and the aft peak tank decreases from top to bottom in the fore-and-aft direction.

[0009] Optionally, based on the structures at both ends of the methanol collection tank in the fore-and-aft direction, protruding structures are provided at both ends of the middle deck in the fore-and-aft direction, and groove structures are provided at the ends of the fore deck and the aft deck to cooperate with the protruding structures.

[0010] As described above, the methanol tank construction method of the present invention has the following beneficial effects: By optimizing the division and construction plan of the methanol tank, the present invention ensures that the guide rails on the fore peak tank and the aft peak tank can be completely installed, effectively shortening the construction period of the methanol tank and improving the construction efficiency of the product. The present invention is applicable to similar structures of various fuel tanks, thereby improving the construction efficiency of fuel tanks with such similar structures. Description of the Drawings

[0011] Figure 1 It shows a schematic diagram of the splitting method of the methanol tank in the traditional way.

[0012] Figure 2 It shows a schematic diagram of the splitting method of the methanol tank in the embodiment of the present invention.

[0013] Figure 3 It shows a schematic diagram of part of the structure of the methanol tank in the embodiment of the present invention.

[0014] Figure 4 It shows a schematic diagram of the splitting method of the main deck in the embodiment of the present invention.

[0015] Description of Component Symbols

[0016] 1. Fore peak tank; 2. Aft peak tank; 3. Top section; 4. Bottom section; 5. Guide rail; 6. Fore deck; 7. Middle deck; 8. Aft deck; 9. Methanol collection tank; 10. Split structure. Detailed Description of the Invention

[0017] The following specific examples are used to illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0018] When describing the embodiments of the present invention in detail, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention here. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0019] For ease of description, spatial relationship terms such as "below", "beneath", "lower than", "under", "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 relationship terms are intended to encompass other orientations of the device in use or operation, in addition to the orientation depicted in the drawings. Further, 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... and..." means including the endpoint values.

[0020] In the context of the present application, the structure in which the first feature is "above" the second feature as described 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.

[0021] It should be noted that the diagrams provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0022] As Figure 2 shown, this embodiment provides a method for constructing a methanol tank, and the specific steps include:

[0023] Divide the bow compartment 1 and the stern compartment 2 from the methanol tank along the bow-stern direction;

[0024] Divide the top section 3 and the bottom section 4 from the methanol tank along the ship height direction; wherein, the bow compartment 1 and the stern compartment 2 are complete structures from top to bottom. The top end of the bow compartment 1 is connected to the top section 3, the bottom end of the bow compartment 1 is connected to the bottom section 4, the top end of the stern compartment 2 is connected to the top section 3, and the bottom end of the stern compartment 2 is connected to the bottom section 4;

[0025] First, hoist the bottom section 4 to the predetermined position, then hoist the bow compartment 1 and the stern compartment 2 to the bow and stern ends of the bottom section 4 respectively for assembly, and finally hoist the top section 3 between the bow compartment 1 and the stern compartment 2, and assemble the bow and stern ends of the top section 3 with the bow compartment 1 and the stern compartment 2 respectively.

[0026] In the traditional method, the methanol tank is split into two upper and lower sub-assemblies for assembly. Since cargo hold guides 5 need to be installed on the bulkheads at both the bow and stern ends of the methanol tank, at this time, the same guide 5 is split into two upper and lower sections for construction. When the two upper and lower sub-assemblies are assembled together, it takes time to position the two sections of the guide 5 to ensure the accuracy after the two sections of the guide 5 are assembled together, thus affecting the construction efficiency of the methanol tank. By adopting the method of this embodiment, the bow and stern ends of the methanol tank are split into a bow compartment 1 and a stern compartment 2. The bow compartment 1 and the stern compartment 2 are complete structures from top to bottom. At this time, the guide 5 can be installed on the bulkheads of the bow compartment 1 and the stern compartment 2 as a whole complete structure, thus avoiding the operations of splitting the guide 5 and subsequent positioning and installation, and further improving the construction efficiency.

[0027] As Figure 3 and Figure 4 shown, the specific steps of this method further include: splitting the main deck into three parts, namely the bow deck 6, the middle deck 7 and the stern deck 8. The bow deck 6 is divided into the bow compartment 1, the middle deck 7 is divided into the top section, and the stern deck 8 is divided into the stern compartment 2. Among them, the joints between the bow deck 6 and the middle deck 7 and the joints between the stern deck 8 and the middle deck 7 are both set outside the superstructure enclosure. Since outfitting parts are usually installed in the superstructure, by setting the joints outside the superstructure enclosure, the installation of the outfitting parts can be avoided from being affected by the joints, thus ensuring the construction of the ship.

[0028] The top section 3 includes a methanol collection tank 9, a middle deck 7 and a methanol functional room compartment. The methanol collection tank 9 is located below the middle deck 7. Usually, the methanol collection tank 9 has special coating requirements and needs to be sandblasted and painted for the whole tank. Therefore, when dividing the top section 3, the integrity of the methanol collection tank 9 needs to be considered, that is, the structure of the whole methanol collection tank 9 is included in the top section 3 for construction. Since the bow and stern ends of the methanol collection tank are respectively connected to the bow compartment 1 and the stern compartment 2, under the principle of ensuring the construction integrity of the methanol collection tank 9, the structures on the bow compartment 1 and the stern compartment 2 that are connected to the methanol collection tank 9 are split and the split structure 10 is included in the construction process of the methanol collection tank 9.

[0029] The structures split from the bow compartment 1 and the stern compartment 2 are subjected to a diagonal treatment, that is, the size of the split structure 10 decreases from top to bottom in the bow and stern directions. By such treatment, the split structure 10 has the characteristics of a large top size and a small bottom size. When the top section 3 is hoisted between the bow and stern compartments for assembly, the top section 3 will not get stuck with the bow and stern compartments, etc., so that the position of the top section 3 can be easily adjusted, improving the convenience of assembly.

[0030] Based on the structures at both the bow and stern ends of the methanol collection tank 9, convex structures are provided at both the bow and stern ends of the middle deck 7, and groove structures matching the convex structures are provided at the ends of the bow deck 6 and the stern deck 8. When the top section 3 is assembled with the bow compartment 1 and the stern compartment 2 respectively, the convex structures at both ends of the middle deck 7 are embedded into the groove structures of the bow deck 6 and the stern deck 8.

[0031] A methanol liquid cargo system is provided in the methanol functional cabin. During the construction of the top section 3, the construction of the methanol functional cabin and the construction of the middle deck 7 are combined in one stage, which can ensure the integrity of the construction of the methanol liquid cargo system and effectively shorten the construction period.

[0032] The above embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A method for constructing a methanol tank, characterized in that, The specific steps include: Dividing the fore compartment and the aft compartment from the methanol tank along the fore-and-aft direction; Dividing the top section and the bottom section from the methanol tank along the ship height direction, wherein the top end of the fore compartment is connected to the top section, the bottom end of the fore compartment is connected to the bottom section, the top end of the aft compartment is connected to the top section, and the bottom end of the aft compartment is connected to the bottom section; First hoist the bottom section to the predetermined position, then hoist the fore compartment and the aft compartment to the fore-and-aft ends of the bottom section respectively for assembly, and finally hoist the top section between the fore compartment and the aft compartment, and assemble the fore-and-aft ends of the top section with the fore compartment and the aft compartment respectively.

2. The method for constructing a methanol tank according to claim 1, characterized in that: The steps of the method further include: splitting the main deck into a fore deck, a middle deck and an aft deck, dividing the fore deck into the fore compartment, dividing the middle deck into the top section, and dividing the aft deck into the aft compartment.

3. The method for constructing a methanol tank according to claim 2, wherein: Set the joints between the fore deck and the middle deck and the joints between the aft deck and the middle deck outside the enclosure of the superstructure.

4. The method for constructing a methanol tank according to claim 2, wherein: The top section includes a methanol collection tank. The construction principle of the methanol collection tank is based on the special coating requirements. During construction, ensure the structural integrity of the methanol collection tank. Based on the construction principle of the methanol collection tank, the structures on the fore compartment and the aft compartment that are connected to the fore-and-aft ends of the methanol collection tank are split and incorporated into the construction process of the top section.

5. The method for constructing a methanol tank according to claim 4, wherein: The size of the structures split from the fore compartment and the aft compartment in the fore-and-aft direction decreases from top to bottom.

6. The method for constructing a methanol tank according to claim 4, characterized in that: Based on the structures at the fore-and-aft ends of the methanol collection tank, convex structures are provided at the fore-and-aft ends of the middle deck, and groove structures matching the convex structures are provided at the ends of the fore deck and the aft deck.

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