A ship sacrificial anode design method and system based on a three-dimensional model

Abstract

This application provides a method and system for designing sacrificial anodes for ships based on a three-dimensional model. The method includes: S1, determining the structural area for sacrificial anode placement in the three-dimensional model of the ship and calculating the submerged area value of the structural area; S2, determining the theoretical number of sacrificial anodes to be placed within the structural area based on the submerged area value; S3, allocating the number of sacrificial anodes within the structural area based on the theoretical number of sacrificial anodes and the structural characteristics within the structural area; and S4, arranging the sacrificial anodes within the structural area based on the allocated number of sacrificial anodes. This application enables rapid and accurate design of sacrificial anodes for ships. It avoids having too few or too many sacrificial anodes, prevents corrosion during ship navigation, and avoids resource waste caused by redundant design.

Description

Technical Field

[0001] This application relates to the field of shipbuilding technology, and more specifically, to a method and system for designing sacrificial anodes for ships based on a three-dimensional model. Background Technology

[0002] During navigation, ship plates can experience electrochemical corrosion due to the interaction with various components in seawater. Therefore, sacrificial anodes are installed in the ship's structure to react with seawater and prevent corrosion of the hull and other components. Consequently, the design of sacrificial anodes is essential during the ship design phase.

[0003] Insufficient sacrificial anodes can cause seawater corrosion of the ship's structural steel plates, affecting the ship's structural strength and thus its operational lifespan, potentially leading to accidents during operation. Conversely, excessive sacrificial anodes can increase the ship's drag, resulting in over-protection. Furthermore, the placement of sacrificial anodes requires precise positioning. Inaccurate placement can lead to uneven current distribution within the compartments, causing corrosion of the hull structure and critical equipment, reducing the ship's service life, and increasing navigational risks.

[0004] In summary, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] The purpose of this application is to provide a method and system for designing ship sacrificial anodes based on a three-dimensional model, which can achieve accurate and rapid design of ship sacrificial anodes.

[0006] Firstly, a method for designing sacrificial anodes for ships based on a three-dimensional model is provided, including the following steps:

[0007] S1. Determine the sacrificial anode arrangement area in the three-dimensional model of the ship, and calculate the water immersion area of ​​the sacrificial anode arrangement area.

[0008] S2. Determine the theoretical number of sacrificial anodes to be arranged within the structural area based on the immersion area value.

[0009] S3. Based on the theoretical arrangement of the sacrificial anodes and the structural characteristics within the structural region, the number of sacrificial anodes is allocated within the structural region.

[0010] S4 arranges the sacrificial anodes in the structural region based on the number of sacrificial anodes allocated within the structural region.

[0011] In one implementation, step S2 further includes the following:

[0012] Depending on the ship type and route, the selection of sacrificial anodes varies, and the theoretical arrangement quantity of sacrificial anodes needs to be adjusted.

[0013] In one implementation, step S3 further includes the following:

[0014] S31. Based on the spatial location of the current structural area, determine the various scenario forms required for arranging sacrificial anodes.

[0015] S32. Based on the different scene forms and structural features, obtain the structural feature objects in all the scene forms.

[0016] S33. Group all the structural feature objects and sort the multiple groups of structural feature objects.

[0017] S34. Allocate the number of sacrificial anodes for each group of structural feature objects in sequence according to the sorting in step S33.

[0018] In one embodiment, the structural feature object includes at least: structural plate and reinforcing material.

[0019] In one implementation, in step S33, the grouping includes at least the following:

[0020] All structural feature objects are grouped into primary groups according to rib number, name, or attribute information. Structural plates that meet the requirements and reinforcing materials spatially related to the structural plates are then grouped into a single group, completing the secondary grouping of the structural feature objects.

[0021] In one implementation, step S33 includes at least the following:

[0022] Sort according to the geometric features of the structural feature objects in each group or the spatial location information of their main components.

[0023] In one implementation, step S34 includes at least the following:

[0024] The theoretical arrangement quantity is used as the total number of allocations, and the number of sacrificial anodes is cyclically allocated to multiple groups of structural feature objects according to the sorting order. The number of sacrificial anodes allocated each time is 1, until the existing allocation quantity is 0.

[0025] In one embodiment, in step S32, redundant structural features such as structural plates and reinforcing materials are eliminated based on information such as the type and spatial location of the structural model.

[0026] In one implementation, step S4 further includes the following:

[0027] S41. Based on the number of sacrificial anodes allocated to each group and their structural characteristics, the sacrificial anodes in each group are initially located according to the principle of equal distribution.

[0028] S42. Based on the initial positioning position and combined with structural features, obtain the final positioning reference point of the sacrificial anode.

[0029] S43. Based on the positioning information of the final positioning reference point of the sacrificial anode, arrange the sacrificial anodes.

[0030] According to a second aspect of this application, a ship sacrificial anode design system based on a three-dimensional model is also provided, including a memory and a processor. The memory stores a computer program that, when executed by the processor, implements the ship sacrificial anode design method based on a three-dimensional model provided in the first aspect.

[0031] Compared with the prior art, the beneficial effects of this application are as follows:

[0032] The technical solution of this application enables accurate and rapid design of sacrificial anodes for ships. It avoids errors during the design process that could result in too few or too many sacrificial anodes, or excessive precision in their arrangement. This reduces corrosion of the ship's structural steel plates during navigation, ensuring the strength of the ship's structure and critical equipment, extending the ship's service life, and mitigating risks in the shipbuilding industry. Furthermore, it avoids resource waste caused by redundant design. This application enhances the automation and intelligence of external outfitting sacrificial anode design and arrangement, reducing ship design costs. Attached Figure Description

[0033] Figure 1 This is a flowchart of a ship sacrificial anode design method based on a three-dimensional model, according to an embodiment of the present invention.

[0034] Figure 2 This is a flowchart of step S3 in the ship sacrificial anode design method based on a three-dimensional model according to an embodiment of the present invention.

[0035] Figure 3 This is a flowchart of step S4 in the ship sacrificial anode design method based on a three-dimensional model according to an embodiment of the present invention. Detailed Implementation

[0036] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] See Figure 1 According to a first aspect of this application, a method for designing sacrificial anodes for ships based on a three-dimensional model is provided, comprising the following steps:

[0041] S1. Determine the sacrificial anode arrangement area in the three-dimensional model of the ship and calculate the water immersion area of ​​the sacrificial anode arrangement area.

[0042] S2. Determine the theoretical number of sacrificial anodes to be arranged within the structural area based on the immersion area value.

[0043] S3. Based on the sacrificial anode theory, the number of sacrificial anodes is arranged according to the structural characteristics within the structural region, and the number of sacrificial anodes is allocated within the structural region.

[0044] S4 arranges sacrificial anodes in the structural region based on the number of sacrificial anodes allocated within the structural region.

[0045] In one embodiment, the structural feature objects include at least: structural plates and reinforcing materials.

[0046] In one implementation, step S1 further includes the following:

[0047] This embodiment takes the sacrificial anode design of a certain type of ship's ballast tank as an example, and determines the space occupied by the ship's ballast tank in the current three-dimensional model design system environment. Based on the currently specified space range, the submerged area value within the current space range is calculated.

[0048] In calculating the immersion area, firstly, based on a specified spatial range, all structural feature objects such as structural panels and profiles that interfere with this range are identified. Then, according to the type of structural feature object, the largest topological surface is obtained sequentially, and the sum of these topological surfaces is used as the theoretical value of the immersion area. When the structural feature object is a structural panel, only the top and bottom topological surfaces are used for calculation. When the structural feature object is a reinforcing member, all topological surfaces other than the two end faces of the profile are used for calculation.

[0049] In one implementation, step S2 further includes the following:

[0050] The theoretical number of sacrificial anodes is adjusted based on information such as ship type, sacrificial anode selection, and route.

[0051] In one implementation, such as Figure 2 As shown, step S3 also includes the following:

[0052] S31. Based on the spatial location of the current structural area, determine the various scenario forms required for the arrangement of sacrificial anodes.

[0053] It should be noted that due to differences in ship design and various scenarios including different locations of flooded compartments, information such as the allocation method, arrangement rules, and arrangement reference characteristics of sacrificial anodes may differ in different scenarios.

[0054] For example: if the current structural layout area is a ballast tank, it will be arranged based on the structural features of the major ribs; if the current structural layout area is a forepeak / sternpeak tank, it will be arranged based on the structural features of the decks and major ribs within the structural area.

[0055] S32. Based on different scene forms and structural features, obtain the structural feature objects in all scene forms.

[0056] S33. Group all structural feature objects and sort the multiple groups of structural feature objects.

[0057] It should be noted that all structural feature objects are first-level grouped according to rib number, name, or attribute information. Structural plates that meet the requirements and reinforcing members spatially related to the structural plates are then grouped into one group, completing the second-level grouping of structural feature objects. The structural feature objects in each group are then sorted according to their geometric characteristics or the spatial position of their main components.

[0058] Specifically, based on the structural feature objects such as structural plates and reinforcing materials obtained in step S32, the structural plates with the same reference surface are grouped according to the structural plate reference surface, and all structural reinforcing material objects on the structural plates are obtained according to spatial position or interference type; after the current structural plates and reinforcing materials are grouped, they are sorted from largest to smallest according to the total area value of the existing structural plates in each group.

[0059] S34. Allocate the number of sacrificial anodes for each group of structural feature objects in sequence according to the sorting in step S33.

[0060] The theoretical arrangement quantity is used as the total number of allocations, and the number of sacrificial anodes is cyclically allocated to multiple groups of structural feature objects in order of sorting. The number of sacrificial anodes allocated each time is 1, until the existing allocation quantity is 0.

[0061] In one embodiment, in step S32, redundant structural features such as structural plates and reinforcing materials are eliminated based on information such as the type and spatial location of the structural model.

[0062] It should be noted that, based on the spatial range specified in step S1, some structural objects that do not meet the requirements are excluded. First, it is determined whether the current structural feature completely encompasses the spatial range. If it does not completely encompass the spatial range, the current structural feature is discarded; otherwise, it is retained. Then, based on the spatial range in step S1, the rib feature surfaces of the structural system within the current spatial range are obtained. It is determined whether the reference surface of the current structural plate is the current rib feature surface. If the reference surface is the rib feature surface, the structural plate is retained; otherwise, it is discarded. At the same time, it is determined whether the current structural plate type is the specified type. If it is the specified type, the structural plate is retained; otherwise, it is discarded. Finally, the stiffeners on each structural plate are obtained sequentially. It is determined whether the current stiffener has contact with any structural plate. If the interference type is contact, the current stiffener is retained and recorded; otherwise, it is discarded.

[0063] In one implementation, such as Figure 3 As shown, step S4 also includes the following:

[0064] S41. Based on the number of sacrificial anodes allocated to each group and their structural characteristics, the sacrificial anodes in each group are initially located according to the principle of equal distribution.

[0065] It should be noted that, firstly, the structural plate material from a set of structural feature objects is obtained, along with a specified topological surface on that plate material, and these multiple topological surfaces are then combined. Next, the area value of the combined surface is calculated, and the surface is uniformly divided into equal sections according to the number of sacrificial anodes, resulting in multiple sections with the same area value. Finally, the center point and its mathematical coordinates are obtained for each section according to the midpoint placement rule, and these multiple center points are considered as the initial positioning reference points for the sacrificial anode placement of this set of structural feature objects.

[0066] S42. Based on the initial location and combined with structural features, obtain the final positioning reference point for the sacrificial anode.

[0067] It should be noted that the process involves acquiring all reinforcing material objects within a segmented surface, while simultaneously measuring the distance between the initial positioning reference point of the sacrificial anode and each reinforcing material. The nearest reinforcing material is then used as the arrangement reference point for that segmented surface. Next, the geometric features of the reinforcing material are acquired, and topological calculations are performed on the geometric structural feature objects to obtain information such as the orientation of the reinforcing material and the center point of the topological surface in contact with the structural plate. Finally, this center point is used as the final positioning reference point for the sacrificial anode.

[0068] S43. Based on the positioning information of the final positioning reference point of the sacrificial anode, arrange the sacrificial anodes.

[0069] Based on the final positioning reference point obtained in step S42, a sacrificial anode positioning and placement reference element is created, and the corresponding sacrificial anode model is called for positioning and placement.

[0070] According to a second aspect of this application, a ship sacrificial anode design system based on a three-dimensional model is also provided, including a memory and a processor. The memory stores a computer program, which, when executed by the processor, implements the ship sacrificial anode design method based on a three-dimensional model provided in the first aspect.

[0071] In summary, the technical solution of this application enables accurate and rapid design of sacrificial anodes for ships. It avoids errors in the design process, preventing an insufficient or excessive number of sacrificial anodes, thus reducing corrosion of the ship's structural steel plates during navigation, ensuring structural strength, and extending the ship's operational lifespan. Furthermore, it avoids resource waste caused by redundant design. It also ensures precise placement of the sacrificial anodes, preventing their design from interfering with welding or maintenance work, and guaranteeing sufficient welding space for structural steel plates and adequate maintenance space for the ship. This application enhances the automation and intelligence of external outfitting sacrificial anode design and layout, reducing ship design costs.

[0072] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for designing a sacrificial anode for a ship based on a three-dimensional model, characterized by, Includes the following steps: S1. Determine the sacrificial anode arrangement area in the three-dimensional model of the ship and calculate the water immersion area of ​​the sacrificial anode arrangement area. S2. Determine the theoretical number of sacrificial anodes within the structural area based on the submerged area value; adjust the theoretical number of sacrificial anodes based on the ship type, sacrificial anode selection, and route information; S3. Based on the theoretical arrangement of the sacrificial anodes and the structural characteristics within the structural region, the number of sacrificial anodes is allocated within the structural region; S31. Based on the spatial location of the current structural area, determine the various scenario forms required for the arrangement of sacrificial anodes; S32. Based on the different scene forms and structural features, obtain the structural feature objects in all the scene forms; S33. Group all the structural feature objects and sort the multiple groups of structural feature objects; S34. Allocate the number of sacrificial anodes for each group of structural feature objects according to the sorting in step S33. S4 arranges sacrificial anodes in the structural region based on the number of sacrificial anodes allocated within the structural region.

2. The method of designing a sacrificial anode for a ship based on a three- dimensional model according to claim 1, characterized in that, In step S33, the grouping includes at least the following: All the structural feature objects are grouped into primary groups according to rib number, name, or attribute information; structural plates that meet the requirements and reinforcing materials that are spatially related to the structural plates are selected into a group to complete the secondary grouping of the structural feature objects.

3. The method of designing a sacrificial anode for a ship based on a three- dimensional model according to claim 2, wherein, In step S33, the sorting includes at least the following: Sort according to the geometric features of the structural feature objects in each group or the spatial location information of their main components.

4. The ship sacrificial anode design method based on a three-dimensional model according to claim 3, characterized in that, In step S34, the quantity allocation includes at least the following: The theoretical arrangement quantity is used as the total number of allocations, and the number of sacrificial anodes is cyclically allocated to multiple groups of structural feature objects according to the sorting order. The number of sacrificial anodes allocated each time is 1, until the existing allocation quantity is 0.

5. The ship sacrificial anode design method based on a three-dimensional model according to claim 4, characterized in that, Step S4 also includes the following: S41. Based on the number of sacrificial anodes allocated to each group and their structural characteristics, the sacrificial anodes in each group are initially located according to the principle of equal distribution. S42. Based on the initial positioning position and combined with structural features, obtain the final positioning reference point of the sacrificial anode; S43. Based on the positioning information of the final positioning reference point of the sacrificial anode, arrange the sacrificial anodes.

6. A ship sacrificial anode design system based on a three-dimensional model, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that, when executed by the processor, implements the ship sacrificial anode design method based on a three-dimensional model as described in any one of claims 1 to 5.

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