A flow guiding structure on the aluminum alloy outer wall of a ship

Abstract

The present invention relates to a flow guiding structure on the aluminum alloy outer wall of a ship, belonging to the technical field of ship design and manufacturing. The flow guiding structure includes a flow guiding profile that is arranged at the bottom of the aluminum alloy outer wall plate and above the steel-aluminum composite joint for collecting and guiding condensed water; a plurality of flow guiding profiles are connected front and back and then connected to the ship's downcomer. The flow guiding structure provided by the present invention is used to prevent the side cabin of the aluminum alloy superstructure from generating an electrochemical reaction when the condensed water that may be generated on the inner side of the outer wall flows to the steel-aluminum composite joint at the lower end of the outer wall due to the temperature difference inside and outside, corroding the composite joint and the aluminum alloy outer wall; the flow guiding structure can also improve the structural stiffness at the bottom of the outer wall and serve as a pipe support bracket. The present invention protects the safety of the aluminum alloy outer wall of the superstructure and the steel-aluminum composite joint, takes into account aesthetics, and has a certain maintenance and preservation function for the pipe system and interior fitting.

Description

Technical Field

[0001] The present invention relates to a flow guiding structure on the aluminum alloy outer wall of a ship, belonging to the technical field of ship design and manufacturing. Background Art

[0002] Generally, a superstructure structure with multiple decks is provided above the freeboard deck of a ship. A larger number of superstructure decks will raise the height of the ship's center of gravity, reducing its stability margin. Usually, measures are taken to appropriately lower the light ship center of gravity to improve the ship's stability. The density of aluminum alloy material is only one-third of that of steel. Therefore, replacing some of the superstructure structure materials from steel with aluminum alloy can significantly reduce the ship's weight and center of gravity, which is one of the commonly used methods to improve the ship's stability. However, the electrochemical activity of aluminum alloy material is stronger than that of steel, that is, aluminum alloy is more likely to corrode than steel. When the two are in direct contact, the aluminum alloy will become a sacrificial material and corrode. Therefore, the bulkhead plates and bulkhead stiffeners of the aluminum alloy superstructure are not allowed to be directly welded to the steel deck, but are connected through a steel-aluminum composite joint as a transition structure. The interior of the office and living cabins in the superstructure generally maintains a constant temperature. When the temperature inside the cabin at the outer wall is significantly higher than the external environment temperature, a temperature difference will be generated between the inner and outer surfaces of the aluminum alloy outer wall. The temperature difference plus the humidity inside the cabin causes condensed water to be generated on the inner surface of the outer wall. When the condensed water flows to the steel-aluminum composite joint at the bottom of the outer wall, an electrochemical reaction will occur, corroding the aluminum alloy part of the steel-aluminum composite joint material and affecting the strength of the aluminum alloy outer wall. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem that when condensed water generated due to the temperature difference between the inner and outer surfaces of the aluminum alloy outer wall flows to the steel-aluminum composite joint at the bottom of the outer wall, it corrodes the steel-aluminum composite joint material and affects the strength of the aluminum alloy outer wall.

[0004] To achieve the purpose of solving the above problems, the technical solution adopted by the present invention is to provide a flow guiding structure on the aluminum alloy outer wall of a ship. The flow guiding structure includes a flow guiding profile for collecting and guiding condensed water, which is provided at the bottom of the aluminum alloy outer wall plate and above the steel-aluminum composite joint; a plurality of flow guiding profiles are connected front and back and then connected to the ship's downpipe.

[0005] Preferably, the flow guiding structure is provided on the inner side of the aluminum alloy outer wall; the flow guiding profile is an aluminum alloy flow guiding profile.

[0006] Preferably, the flow guiding structure is provided on the inner side of the outer wall of living, office and other cabins with interior finishing and higher temperatures.

[0007] Preferably, the flow guiding structure provided on the inclined bulkheads at the head and tail ends of the superstructure adopts a combined profile with a heightened web.

[0008] Preferably, the diversion structure with an arc transition area on the outer wall adopts a combined profile with a heightened web, and a pipe system interface is provided in the arc transition area to ensure that the condensed water is completely collected without leakage.

[0009] Preferably, when the diversion structure is interrupted due to interference with a steel door or other outfitting parts on the outer wall, a connecting pipe system or a combination of a local diversion profile and a connecting pipe system can be provided along the lower edge of the door frame to connect with the interrupted diversion structure.

[0010] Preferably, when the stiffeners on the outer wall are horizontally arranged, the diversion structure is arranged below the lowermost horizontal stiffener.

[0011] Preferably, pipe system through holes are provided on the stiffeners connected to the diversion structure.

[0012] Preferably, the diversion structure is provided as a bracket for the outer wall pipe system.

[0013] Preferably, the tensile strength of the steel-aluminum composite joint in the thickness direction is less than that of the steel outer wall or the aluminum alloy outer wall; the diversion structure adopts an angle aluminum or aluminum alloy combined profile.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The diversion structure provided by the present invention is used to prevent the electrochemical reaction from occurring when the condensed water that may be generated on the inner side of the outer wall flows to the steel-aluminum composite joint at the lower end of the outer wall due to the temperature difference inside and outside after the interior decoration is arranged in the side cabin of the aluminum alloy superstructure, corroding the composite joint and the aluminum alloy outer wall; the diversion structure can also improve the structural stiffness of the bottom of the outer wall and serve as a pipe system bracket. The present invention needs to comprehensively consider the cabin distribution, structural design, pipe system lofting and outfitting part dimensions, etc. It is mainly to protect the safety of the aluminum alloy outer wall and the steel-aluminum composite joint of the superstructure, taking aesthetics into account, and has a certain maintenance and protection function for the pipe system and the interior decoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a transverse view of the diversion structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the diversion structure of the present invention along the trend of the outer wall;

[0018] Figure 3 It is an optimized schematic diagram of the diversion structure interrupted at the steel door frame of the present invention;

[0019] Figure 4 It is a schematic diagram of the combined profile of the diversion structure of the present invention in the arc transition area of the outer wall.

[0020] Reference Numerals: 1. Steel-aluminum composite joint; 2. Aluminum alloy diversion profile; 3. Aluminum alloy outer wall; 4. Aluminum alloy combined profile; 5. Arc transition area; 6. Steel door; 7. Vertical or horizontal stiffener of outer wall; 8. Pipe system through-hole; 9. Steel deck; 10. Steel; 11. Aluminum alloy; 12. Angle aluminum profile; 13. Steel outer wall; 14. Transition curve; 15. Connecting pipe system; 16. Bow and stern end outer wall. Detailed implementation mode

[0021] To make the present invention more obvious and understandable, the following is a detailed description with preferred embodiments and in conjunction with the accompanying drawings:

[0022] As Figures 1-4 shown, the technical solution adopted by the present invention is to provide a diversion structure on the aluminum alloy outer wall of a ship. The diversion structure includes an aluminum alloy diversion profile 2 that is arranged at the bottom of the aluminum alloy outer wall plate and above the steel-aluminum composite joint 1 for collecting and guiding condensed water; a plurality of diversion profiles 2 are connected front and back and then connected to the ship's downpipe. The diversion structure is arranged inside the aluminum alloy outer wall 3; the diversion profile 2 is set as an aluminum alloy diversion profile. The diversion structure is arranged inside the outer wall 3 of living, office places with interior finishing and other cabins with higher temperatures. The diversion structure on the inclined outer wall 3 at the bow and stern ends of the superstructure adopts a combined profile 4 with a heightened web. The diversion structure for the outer wall 3 in the arc transition area 5 adopts a combined profile 4 with a heightened web, and a pipe system interface for ensuring that the condensed water is completely collected without leakage is arranged in the arc transition area 5. When the diversion structure is interrupted due to interference with the steel door 6 or other outfitting parts on the outer wall, a connecting pipe system or a combination of a local diversion profile and a connecting pipe system can be added at the lower edge of the door frame to connect with the interrupted diversion structure. When there is a horizontal stiffener 7 on the outer wall 3, the diversion structure is arranged below the lowermost horizontal stiffener 7. A pipe system through-hole 8 is arranged on the vertical stiffener 7 connected to the diversion structure. The diversion structure is set as a bracket for the pipe system of the outer wall 3. The tensile strength of the steel-aluminum composite joint 1 in the thickness direction is less than that of the steel outer wall 13 or the aluminum alloy outer wall 3; the diversion structure adopts an angle aluminum 12 or an aluminum alloy combined profile 4.

[0023] Technical solution of the present invention: A diversion structure is installed at an appropriate position at the bottom of the outer wall 3 of the aluminum alloy around the steel-aluminum composite joint 1 material, collecting and guiding the condensed water to the ship's sewage pipe system, avoiding the occurrence of electrochemical reactions when the condensed water contacts the steel-aluminum composite joint 1 material (composed of steel 10 and aluminum alloy 11), and protecting the composite joint and the aluminum alloy superstructure structure. The diversion structure is located inside the aluminum alloy outer wall 3, mainly solving the problem of the condensed water generated on the inner side of the outer wall panel due to the temperature difference between the inside and outside of the cabin corroding the steel-aluminum composite joint 1; the diversion structure is located at the lowermost end of the aluminum alloy outer wall 3, above the steel-aluminum composite joint 1, and the condensed water generated on the outer wall 3 of each deck cabin of the superstructure finally converges downward to the diversion profile 2; the diversion structure is generally installed on the inner side of the outer wall 3 of living, office premises and other cabins with higher temperatures with interior finishing; when the diversion structure is located on the inclined outer walls at the head and tail ends of the superstructure or in the arc transition area 5 of the outer wall, generally a high-web aluminum alloy combined profile 4 is used instead of the angle aluminum profile 12, and pipe system interfaces are added in the arc transition area 5 and other measures are taken to ensure that the condensed water is completely collected without leakage; when the diversion structure is interrupted due to interference with the steel door 6 or other outfitting parts on the outer wall, a connecting pipe system 15 or a combination of local diversion profiles 2 and the connecting pipe system 15 can be added along the lower edge of the door frame to connect with the interrupted diversion structure, and isolation measures are considered between the aluminum alloy profile and the steel door and other outfitting parts; according to the routing of the mechanical, electrical and pipe systems, the size and position of the pipe through holes 8 on the outer wall stiffener 7 connected to the diversion structure profile are adjusted to ensure the strength of the stiffener and facilitate the pipe lofting; when the outer wall stiffener 7 is a horizontal skeleton, the diversion structure is installed below the lowermost horizontal stiffener 7, maintaining a certain distance; the diversion structure can also serve as a bracket for the pipe system on the outer wall 3, appropriately increasing the width of the diversion profile, coordinating the mechanical and electrical pipe lofting within the height range of the stiffener 7, enabling the interior finishing to be flat and maintaining the beauty of the cabin; the tensile strength of the steel-aluminum composite material joint 1 in the thickness direction is less than that of the steel outer wall 13 or the aluminum alloy outer wall 3. The diversion structure is generally an angle aluminum profile 12 or an aluminum alloy combined profile 4, installed above the composite joint, which can improve the stiffness of the bottom structure of the outer wall, control deformation, and at the same time protect the composite joint.

[0024] As Figure 1 shown, the aluminum alloy outer wall 3 is connected to the uppermost steel deck 9 through the steel-aluminum composite joint 1 and the steel outer wall 13. The diversion profile 2 is located at the bottom of the aluminum alloy outer wall 3, above the steel-aluminum composite material joint 1, and its function is to collect the condensed water generated inside the aluminum alloy outer wall 3 and converge it into the corresponding pipe system, preventing the condensed water from flowing into the steel-aluminum composite joint 1 and causing electrochemical corrosion; the diversion profile 2 is generally provided on the inner side of the outer wall 3 with interior finishing and a large temperature difference between the inside and outside of the cabin, such as living, office cabins on the side; other cabins without interior finishing such as engine room casings and fan rooms generally do not require this structure;

[0025] As Figure 2As shown in the figure, the aluminum alloy diversion profile 2 is continuously arranged along the bottom of the peripheral wall 3, at a certain distance above the steel-aluminum composite joint 1: When the head and tail ends of the peripheral wall 3 are circular transition lines 14, the diversion profile 2 is continuous along the arc line; When horizontal stiffeners 7 are arranged at the lower end of the peripheral wall, the diversion profile 2 is installed below the lowermost horizontal stiffener 7;

[0026] As Figure 3 shown in the figure, when the diversion profile 2 is interrupted due to interference with the steel door or other outfitting parts, a connecting pipe system 15 or a combination of a local diversion profile 2 and the connecting pipe system 15 is arranged below the edge of the door frame to connect with the interrupted diversion profile 2 to ensure that the condensate does not leak;

[0027] As Figure 4 shown in the figure, in the arc transition area 5 between the peripheral wall 3 and the head and tail peripheral walls 16, the size of the diversion profile 2 should be increased, and the aluminum alloy combined profile 4 can be used to replace the angle aluminum profile 12;

[0028] As Figure 1 shown in the figure, according to the lofting drawing of the machinery and electrical pipe systems, through holes 8 are opened at appropriate positions on the peripheral wall stiffeners 7. The diversion profile can also serve as a bracket, and the pipe systems are lofted within the height range of the stiffeners 7 to keep the interior finish of the cabin flat.

[0029] The above is only the preferred embodiment of the present invention, and it does not impose any formal or substantial limitations on the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, any equivalent changes, such as slight modifications, decorations, and evolutions made by using the technical content disclosed above, are all equivalent embodiments of the present invention; At the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flow guiding structure on the outer aluminum alloy wall of a ship, characterized in that: The diversion structure includes a diversion profile that is provided at the bottom of the aluminum alloy outer wall panel and above the steel-aluminum composite joint for collecting and guiding condensed water. Multiple diversion profiles are connected front and back and then connected to the ship's downpipe. The diversion structure is provided inside the aluminum alloy outer wall.

2. The flow guiding structure on the aluminum alloy outer wall of a ship as described in claim 1, wherein: The diversion profile is set as an aluminum alloy diversion profile.

3. The diversion structure on the aluminum alloy outer wall of a ship as claimed in claim 2, characterized in that: The diversion structure is provided inside the outer wall of living, office quarters and other cabins with high temperatures with interior finishing.

4. The flow guiding structure on the aluminum alloy outer wall of a ship according to claim 3, characterized in that: The diversion structure provided on the inclined bulkheads at the head and tail ends of the superstructure adopts a combined profile with a heightened web.

5. The diversion structure on the aluminum alloy outer wall of a ship as described in claim 4, characterized in that: The diversion structure in the arc transition area of the outer wall adopts a combined profile with a heightened web, and a pipe system interface is provided in the arc transition area to ensure that condensed water is completely collected without leakage.

6. The flow guiding structure on the aluminum alloy outer wall of a ship as claimed in claim 5, characterized in that: When the diversion structure is interrupted due to interference with steel doors or other outfittings on the outer wall, a connecting pipe system or a combination of local diversion profiles and connecting pipe systems can be provided along the lower edge of the door frame to connect with the interrupted diversion structure.

7. The flow guiding structure on the aluminum alloy outer wall of a ship as described in claim 6, characterized in that: When the stiffeners on the outer wall are horizontally arranged, the diversion structure is provided below the lowermost horizontal stiffener.

8. The flow guiding structure on the aluminum alloy outer wall of a ship according to claim 7, characterized in that: Pipe system through holes are provided on the stiffeners connected to the diversion structure.

9. The flow guiding structure on the aluminum alloy outer wall of a ship as described in claim 8, characterized in that: The diversion structure is set as a bracket for the outer wall pipe system.

10. The flow guiding structure on the aluminum alloy outer wall of a ship as described in claim 9, characterized in that: The tensile strength of the steel-aluminum composite joint in the thickness direction is less than that of the steel outer wall or the aluminum alloy outer wall; the diversion structure adopts angle aluminum or an aluminum alloy combined profile.

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