A LNG tank system area division method, tank carrying method, tank total section and ship

Abstract

The application discloses an LNG cabin system area division method, a cabin mounting method, a cabin total section and a ship. The LNG cabin system area division method in the application takes the part TCS interarea where a pump tower is located as a division reference, divides the LNG cabin system area according to the functional cabin room arrangement, and is divided into a left total section, a right total section, a middle front section, a middle rear lower section, a middle rear upper section and a CO2 intertotal section. The total section division is convenient for assembly and welding, reduces the interference between the structure and the outfitting unit, divides the complete functional cabin room in the same total section, enables the pipes, equipment, valves and iron outfitting parts to be completely installed, reduces the influence of the pump tower hoisting time on the undocking integrity and the wharf construction period, mounts and forms each functional cabin room in advance, is beneficial to the outfitting integrity and the promotion of the related system, improves the undocking integrity of the ship cabin, and shortens the wharf construction period.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a method for dividing an LNG tank system into zones, a method for loading the tank, a tank section, and a ship. Background Technology

[0002] Currently, the functional area layout of the LNG compartment system on dual-fuel container ships is as follows: Figure 1 As shown, the TCS (Traction Control System) room, which houses the pump tower, is located within the LNG tank system functional area. Traditional dual-fuel container ships divide the LNG tank system functional area into a nearly full-width section above the pump tower. Only after the pump tower is installed can the large section be installed in the dock. However, pump tower installation is only possible at certain stages of LNG tank construction. Therefore, pump tower installation typically occurs in the later stages of the dock phase, resulting in a very late completion time for the large section in the dock phase. The large section is often installed before leaving the dock. This late completion time hinders the complete construction of the LNG tank system functional area of ​​the dual-fuel container ship and prolongs the terminal construction cycle. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this application provides a method for functionally dividing the LNG tank system area of ​​a dual-fuel container ship, thereby solving technical problems such as poor undocking integrity of the LNG tank system functional area and long terminal construction cycle caused by the functional area division of the LNG tank system in existing dual-fuel container ships.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0005] A method for dividing an LNG tank system area, wherein the LNG tank system area is a dual-fuel container ship LNG tank system area, and the dual-fuel LNG tank system area is divided into a front area and a rear area by an isolation bulkhead. The front area, from left to right, has a left transformer room, an auxiliary equipment room, and a right transformer room arranged sequentially. A CO2 room is located above the auxiliary equipment room. The rear area, from left to right, has a gas-fired electrical equipment room, a safety room, and a nitrogen room arranged sequentially. Below the safety room, and between the gas-fired electrical equipment room and the nitrogen room, a TCS room and a gas processing room are arranged sequentially from left to right. The division method includes the following steps:

[0006] S1. Considering the limitations of the production site area on the section length, determine the weight of the overall structure and outfitting, and ensure that the total weight of the sub-sections, including slings, does not exceed the maximum lifting capacity of the on-site crane.

[0007] S2. According to the LNG container system area layout diagram, the LNG container system area is divided into the left side area, the middle area and the right side area. The left side area includes the complete left transformer room, the complete gas electrical equipment room and part of the TCS room, part of the safety room and part of the auxiliary equipment room. The left side area forms the left main section. The right side area includes the complete right transformer room, the complete gas processing room, the complete nitrogen room and part of the auxiliary equipment room, part of the TCS room and part of the safety room. The right side area forms the right main section. The middle area is between the left main section and the right main section. The section seams of the sub-sections are all arranged in the TCS room.

[0008] S3. Divide the central area in S2 into a front-middle section and a rear-middle section using the isolation bulkhead as the boundary. The front-middle section includes some auxiliary equipment rooms, dividing the complete CO2 room into a separate CO2 room section. Some auxiliary equipment rooms in the front-middle section, some auxiliary equipment rooms in the left side section, and some auxiliary equipment rooms in the right side section can form a complete auxiliary equipment room.

[0009] S4. Divide the middle and rear section into a lower middle and rear section and an upper middle and rear section in the height direction. The lower middle and rear section includes the area where the pump tower is set in the TCS room. The upper middle and rear section includes a part of the safety room. The part of the safety room in the upper middle and rear section, the part of the safety room in the left main section and the part of the safety room in the right main section can form a complete safety room. The part of the TCS room at the lower middle and rear end, the part of the TCS room in the left main section and the part of the TCS room in the right main section can form a complete TCS room.

[0010] In one embodiment, the seam lines are all located on the midship side of the TCS compartment structural wall.

[0011] In one embodiment, the distance between the fracture line and the structural wall of the nearest TCS compartment is greater than one meter.

[0012] In one implementation, the isolation bulkhead described in S3 is included in the forward section.

[0013] In one implementation, the height division of the middle and rear segments is based on the upper wall between TCSs.

[0014] In one implementation, both the lower middle segment and the upper middle segment are designed as "L" shapes.

[0015] This invention also provides a method for loading a LNG tank, wherein the tank is an LNG tank for a dual-fuel container ship. The LNG tank system area described above is the LNG tank system area for a dual-fuel container ship. After the structural construction of the LNG tank is completed, the left and right main sections are loaded, so that the left transformer room, right transformer room, gas electrical equipment room, gas treatment room, and nitrogen room are all enclosed and complete compartments after the structural construction of the LNG tank is completed. Before the pump tower is hoisted, the mid-forward section and the CO2 room main section are loaded sequentially. After the pump tower is hoisted, the mid-rear lower section and mid-rear upper section are loaded sequentially to form the LNG tank structural sections and complete the LNG tank loading.

[0016] The present invention also provides a dual-fuel container ship LNG tank section, which adopts the above-mentioned dual-fuel container ship LNG tank loading method.

[0017] The present invention also provides a dual-fuel container ship, the dual-fuel container ship comprising the above-mentioned dual-fuel container ship LNG tank section.

[0018] Compared with the prior art, this application has at least the following beneficial effects:

[0019] This application uses the TCS area where the pump tower is located as a reference point to divide the LNG tank system area into sections based on the functional compartment layout. These sections are: left main section, right main section, front mid section, lower mid-rear section, upper mid-rear section, and CO2 compartment section. This section division facilitates assembly and welding, minimizes interference between the structure and outfitting units, and ensures that complete functional compartments are placed within the same section. This allows for the complete installation of pipes, equipment, valves, and iron outfitting components, reducing the impact of late pump tower hoisting on the integrity of the undocking and the construction cycle of the dock. Pre-assembling the functional compartments facilitates the integrity of outfitting and the advancement of related systems, improves the integrity of the ship's undocking, and shortens the dock construction cycle.

[0020] The LNG compartment system area division method, compartment mounting method, compartment section and ship of the same type structure design in this application have accumulated scientific and reasonable technical experience and provide a mature and usable section division design method. Attached Figure Description

[0021] Figure 1 This is a floor plan of the functional areas of the LNG compartment system in a dual-fuel container ship in the existing technology.

[0022] Figure 2 This is a cross-sectional view of the layout of the functional area in front of the compartment of the LNG tank system of the dual-fuel container ship in this application embodiment;

[0023] Figure 3 This is a cross-sectional view of the layout of the rear area of ​​the LNG tank system functional area compartment of the dual-fuel container ship in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the functional sub-section division method of the LNG tank system area of ​​a dual-fuel container ship in this application embodiment.

[0025] The specific explanations of the reference numerals in the attached diagrams are as follows: 11. LNG tank; 101. Left transformer room; 102. Gas electrical equipment room; 103. CO2 room; 104. Auxiliary equipment room; 105. Safety room; 106. TCS room; 107. Gas processing room; 108. Right transformer room; 109. Nitrogen room; 12. Left main section; 13. Right main section; 14. Front-middle section; 15. Lower-middle-rear section; 16. Upper-middle-rear section; 22. CO2 room main section; 23. LNG tank structural section. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0027] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0028] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0029] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical connection or internal connection between two components. They can be direct connection or indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0031] This embodiment takes a 23,000 TEU dual-fuel container ship with a cargo area width of approximately 61 meters as an example. This embodiment provides a method for functionally dividing the LNG cargo system area of ​​a dual-fuel container ship into sections, wherein the LNG cargo system area layout of the dual-fuel container ship is as follows: Figure 1-3 The LNG storage system area is located above LNG storage 11. Divided by the isolation wall, the LNG storage system area is divided into a front area and a rear area. From left to right, the front area includes the left transformer room 101, the auxiliary equipment room 104, and the right transformer room 108. Above the auxiliary equipment room 104 is the CO2 room 103. From left to right, the rear area includes the gas-fired electrical equipment room 102, the safety room 105, and the nitrogen room 109. Below the safety room 105, between the gas-fired electrical equipment room 102 and the nitrogen room 109, from left to right, are the TCS room 106 and the gas processing room 107. The division method includes the following steps:

[0032] S1. Considering the limitations of the production site area on the section length, determine the weight of the overall structure and outfitting to ensure that the total weight of the sub-sections, including slings, does not exceed the maximum lifting capacity of the on-site crane.

[0033] S2. According to the LNG container system area layout diagram, the LNG container system area is divided into a left-side area, a central area, and a right-side area. The left-side area includes the complete left transformer room 101, the complete gas-fired electrical equipment room 102, and parts of the TCS room, a safety room, and auxiliary equipment rooms, forming the left-side main section 12. The right-side area includes the complete right transformer room 108, the complete gas processing room 107, the complete nitrogen room 109, and parts of the auxiliary equipment rooms, a TCS room, and a safety room, forming the right-side main section 13. The central area is located between the left-side and right-side main sections. Figure 2 , 3 As shown by the arrows, the seams of the main sections are all arranged within the TCS compartment 106; in this embodiment, the seams are all located on the midship side of the structural wall of the TCS compartment 106, and the distance between the seam and the nearest TCS compartment structural wall is greater than one meter.

[0034] Since the pump tower is located within TCS compartment 106, the installation of the left main section 12 and the right main section 13 is not affected by the pump tower hoisting time and can be carried out earlier than existing technologies. After the structural construction of the LNG compartment 11 is completed, the left and right transformer compartments, gas electrical equipment compartments, gas treatment compartments, and nitrogen compartments will all form closed and complete compartments. The outfitting integrity construction is greatly advanced, which is conducive to improving the undocking integrity.

[0035] S3. The central region in S2 is divided into a forward mid-section 14 and a rear mid-section, with the isolation bulkhead as the boundary. The forward mid-section includes some auxiliary equipment rooms. Since the CO2 room 103 is located above the main deck, the complete CO2 room 103 is divided into a separate CO2 room section 22. Some auxiliary equipment rooms in the forward mid-section 14, some auxiliary equipment rooms in the port side section, and some auxiliary equipment rooms in the starboard side section can form a complete auxiliary equipment room 104. The isolation bulkhead is included in the forward mid-section 14 so that the CO2 room section can be continuously hoisted after the forward mid-section 14 is installed.

[0036] S4. The middle and rear sections are divided vertically into a lower middle and rear section 15 and an upper middle and rear section 16. The lower middle and rear section includes the area where the pump tower is located within the TCS room. The upper middle and rear section includes a portion of the safety room. The portion of the safety room at the upper middle and rear end, the portion of the safety room within the left main section, and the portion of the safety room within the right main section can form a complete safety room 105. The portion of the TCS room at the lower middle and rear end, the portion of the TCS room within the left main section, and the portion of the TCS room within the right main section can form a complete TCS room 106. The vertical division is based on the upper wall of the TCS room. Both the lower middle and rear section 15 and the upper middle and rear section 16 are designed in an "L" shape.

[0037] This embodiment uses the TCS area where the pump tower is located as a reference point for division. The LNG tank system area is divided into sections according to the functional compartment layout. The section division facilitates assembly and welding, minimizes interference between the structure and outfitting units, and divides the complete functional compartments into the same section. This ensures that pipes, equipment, valves, and iron outfitting components are installed completely, which can reduce the impact of late pump tower hoisting time on the undocking integrity and the dock construction cycle. The early assembly and formation of each functional compartment is conducive to the outfitting integrity and the advancement of related systems, improves the undocking integrity, and shortens the dock construction cycle.

[0038] This embodiment also provides a method for loading LNG tanks into a dual-fuel container ship, employing the aforementioned method for functionally dividing the LNG tank system of a dual-fuel container ship into functional sections, such as... Figure 4 As shown, after the structural construction of LNG compartment 11 is completed, the left main section 12 and the right main section 13 are installed. After the structural construction of LNG compartment 11 is completed, the left transformer room 101, the right transformer room 108, the gas electrical equipment room 102, the gas processing room 107, and the nitrogen room 109 are all enclosed and complete compartments. Before the pump tower is hoisted, the middle front section 14 and the CO2 room main section 22 are installed in sequence. After the pump tower is hoisted, the middle rear lower section 15 and the middle rear upper section 16 are installed in sequence to form the LNG compartment structural section 23 and complete the LNG compartment installation.

[0039] This embodiment also provides a dual-fuel container ship LNG tank section, which adopts the above-mentioned dual-fuel container ship LNG tank loading method.

[0040] This embodiment also provides a dual-fuel container ship, which includes the aforementioned dual-fuel container ship LNG tank section.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for dividing LNG compartment systems into zones, characterized in that, The LNG tank system area is a dual-fuel container ship LNG tank system area. The dual-fuel LNG tank system area is divided into a front area and a rear area by the isolation bulkhead. The front area, from left to right, contains the left transformer room, auxiliary equipment room, and right transformer room. A CO2 room is located above the auxiliary equipment room. The rear area, from left to right, contains the gas-fired electrical equipment room, safety room, and nitrogen room. Below the safety room, and between the gas-fired electrical equipment room and the nitrogen room, from left to right, is the TCS room and gas treatment room. The division method includes the following steps: S1. Considering the limitations of the production site area on the section length, determine the weight of the overall structure and outfitting to ensure that the total weight of the sub-section, including slings, does not exceed the maximum lifting capacity of the on-site crane. S2. According to the LNG container system area layout diagram, the LNG container system area is divided into the left side area, the middle area and the right side area. The left side area includes the complete left transformer room, the complete gas electrical equipment room and part of the TCS room, part of the safety room and part of the auxiliary equipment room. The left side area forms the left main section. The right side area includes the complete right transformer room, the complete gas processing room, the complete nitrogen room and part of the auxiliary equipment room, part of the TCS room and part of the safety room. The right side area forms the right main section. The middle area is between the left main section and the right main section. The joint lines of the sub-sections are all arranged in the TCS room. S3. Divide the central area in S2 into a front-middle section and a rear-middle section using the isolation bulkhead as the boundary. The front-middle section includes some auxiliary equipment rooms, dividing the complete CO2 room into a separate CO2 room section. Some auxiliary equipment rooms in the front-middle section, some auxiliary equipment rooms in the left side section, and some auxiliary equipment rooms in the right side section can form a complete auxiliary equipment room. S4. Divide the middle and rear section into a lower middle and rear section and an upper middle and rear section in the height direction. The lower middle and rear section includes the area where the pump tower is set in the TCS room. The upper middle and rear section includes a part of the safety room. The part of the safety room in the upper middle and rear section, the part of the safety room in the left main section and the part of the safety room in the right main section can form a complete safety room. The part of the TCS room in the lower middle and rear section, the part of the TCS room in the left main section and the part of the TCS room in the right main section can form a complete TCS room.

2. The LNG compartment system area division method according to claim 1, characterized in that, The fracture lines are all located on the midship side of the structural wall of the TCS compartment.

3. The LNG compartment system area division method according to claim 2, characterized in that, The distance between the fracture line and the structural wall of the nearest TCS compartment is greater than one meter.

4. The LNG compartment system area division method according to claim 1, characterized in that, The isolation bulkhead described in S3 is included in the forward section.

5. The LNG compartment system area division method according to claim 1, characterized in that, In step S4, the height direction of the middle and rear segments is divided by the upper wall between TCSs.

6. The LNG compartment system area division method according to claim 1, characterized in that, Both the lower middle and upper middle segments are designed with an "L" shape.

7. A method for loading a cabin, characterized in that, The LNG tank is a dual-fuel container ship LNG tank. Using the LNG tank system area division method as described in any one of claims 1-6, after the structural construction of the LNG tank is completed, the left and right main sections are installed, so that the left transformer room, right transformer room, gas electrical equipment room, gas treatment room, and nitrogen room all form a closed and complete compartment after the structural construction of the LNG tank is completed. Before the pump tower is hoisted, the mid-forward section and the CO2 room main section are installed sequentially. After the pump tower is hoisted, the mid-rear lower section and mid-rear upper section are installed sequentially, forming the LNG tank structural sections and completing the LNG tank installation.

8. A cabin assembly section, characterized in that, The LNG compartment section is a dual-fuel container ship LNG compartment section, and the dual-fuel container ship LNG compartment loading method as described in claim 7 is adopted.

9. A ship, characterized in that, The vessel is a dual-fuel container ship, and the dual-fuel container ship includes an LNG tank section as described in claim 8.

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