A method for generating an extreme waterplane, a ship and an offshore platform

Abstract

The present invention belongs to the technical field of ships, and discloses a method for generating an extreme waterplane, a ship and an offshore platform. Among them, the method for generating an extreme waterplane obtains the extreme waterplane in the form of points. Specifically, when it is necessary to obtain the extreme waterplane, a reference plane is first established; a reference point group is established based on the reference plane; then, according to each waterplane, the height of each reference point in the reference point group is corrected along the hull height direction to obtain a target point group, and then the extreme waterplane is generated based on the target point group. It can avoid generating the extreme waterplane by overlapping, trimming and splicing multiple waterplane planes, making the steps of generating the extreme waterplane simple and the time-consuming for generating the extreme waterplane short.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly to a method for generating an extreme waterplane, a ship and an offshore platform. Background Art

[0002] Currently, in the design of ships and offshore platforms, it is necessary to obtain the waterplane plane data from the stability calculation results, so as to create an extreme waterplane using the waterplane plane, and use the extreme waterplane as a reference for the structural design of the hull, pipeline layout, openings such as doors, breather heads, and vents. However, due to the different ship types, subdivision complexities of different ships, and different rules and specifications to be satisfied, the extreme waterplanes of different ships are different.

[0003] In the prior art, the method for calculating the extreme waterplane needs to obtain dozens to millions of waterplane planes to generate the extreme waterplane. Specifically, the obtained multiple waterplane planes are superimposed, and as the continuous mutual shearing and splicing between the planes, the final extreme waterplane is trimmed. This method for calculating the extreme waterplane, as the number of waterplane planes increases, the complexity of trimming increases, the time consumed becomes longer and longer, and the success rate of trimming also decreases. When the number of waterplane planes reaches 100,000 or more, this method can hardly successfully create the extreme waterplane. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for generating an extreme waterplane, a ship and an offshore platform, so as to solve the problems that in the prior art, as the number of waterplane planes increases, the complexity of trimming increases, the time consumed becomes longer and longer, and the success rate of trimming also decreases.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A method for generating an extreme waterplane, which includes:

[0007] Establish a reference plane;

[0008] Establish a reference point group based on the reference plane;

[0009] Obtain waterplane planes, where the number of waterplane planes is N, and N is a positive integer greater than 1;

[0010] Successively correct the reference heights of each reference point in the reference point group according to the N waterplane planes to obtain a target point group;

[0011] Generate an extreme waterplane based on the target point group.

[0012] Preferably, the reference heights of the reference points in the reference point group are corrected according to one of the waterplane planes to obtain a target point group, which specifically includes the following steps;

[0013] Along the height direction of the hull, it is judged whether there is a reference point in the reference point group whose reference height is less than the height of the waterplane plane;

[0014] If there is a reference point in the reference point group whose reference height is less than the height of the waterplane plane, the reference height of the reference point is raised to the height where the waterplane plane is located;

[0015] If the reference heights of the reference points in the reference point group are all greater than or equal to the height of the waterplane plane, the reference heights of the reference points remain unchanged.

[0016] Preferably, the reference point group includes M reference points, and M is a positive integer greater than 3;

[0017] The M reference points are irregularly distributed in the area where the reference plane is located, or the M reference points are arrayed in the area where the reference plane is located.

[0018] Preferably, the reference heights of the M reference points are the same, or at least one of the reference points among the M reference points has a different height.

[0019] Preferably, along the height direction of the hull, the M reference points are all located below the reference plane.

[0020] Preferably, the reference plane is the water surface.

[0021] Preferably, the target point group generates an extreme waterplane by creating a grid.

[0022] Preferably, the target point group generates an extreme waterplane by creating a curved surface.

[0023] A ship uses the above extreme waterplane generation method to generate an extreme waterplane.

[0024] An offshore platform uses the above extreme waterplane generation method to generate an extreme waterplane.

[0025] Advantages of the present invention:

[0026] The object of the present invention is to provide a method for generating an extreme waterplane, a ship and an offshore platform. Among them, the method for generating an extreme waterplane obtains the extreme waterplane in the form of points. Specifically, when it is necessary to obtain the extreme waterplane, a reference plane is first established; a reference point group is established based on the reference plane; then, according to each waterplane, the height of each reference point in the reference point group is corrected along the hull height direction to obtain a target point group, and then the extreme waterplane is generated based on the target point group, which can avoid generating the extreme waterplane by overlapping, trimming and splicing multiple waterplane planes, making the steps of generating the extreme waterplane simple and the time-consuming for generating the extreme waterplane short. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the flow chart of the method for generating an extreme waterplane provided by the specific embodiment of the present invention Figure 1 ;

[0028] Figure 2 is the flow chart of the method for generating an extreme waterplane provided by the specific embodiment of the present invention Figure 2 ;

[0029] Figure 3 is the distribution of the reference point group in the method for generating an extreme waterplane provided by the specific embodiment of the present invention Figure 1 ;

[0030] Figure 4 is the distribution of the reference point group in the method for generating an extreme waterplane provided by the specific embodiment of the present invention Figure 2 ;

[0031] Figure 5 is the curve graph generated by the number of waterplane planes and the time-consuming for generating the extreme waterplane.

[0032] In the figure:

[0033] 1. Reference plane;

[0034] 2. Reference point group. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0036] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0038] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] The present invention provides a method for generating an extreme waterplane. This method for generating an extreme waterplane can avoid generating the extreme waterplane by overlapping, trimming, and splicing multiple waterplane planes, making the steps of generating the extreme waterplane simple and the time-consuming for generating the extreme waterplane short.

[0040] As Figure 1 and Figure 2 shown, this method for generating an extreme waterplane includes the following steps.

[0041] S100. Set up a reference plane 1.

[0042] Specifically, in this embodiment, the reference plane 1 is the water surface. The water surface refers to the water surface when the ship is sailing normally. As an alternative, the reference plane 1 is the bottom surface of the hull. The bottom surface refers to the bottom surface of the hull when the ship is sailing normally. As an alternative, the reference plane 1 is the bottom surface of the offshore platform. The bottom surface of the offshore platform refers to the bottom surface of the offshore platform when it is working normally.

[0043] Among them, the reference plane 1 is: centered on the ship, it only needs to cover the entire range of the ship.

[0044] S200. Set up a reference point group 2 based on the reference plane 1.

[0045] Specifically, the reference point group 2 includes M reference points, where M is a positive integer greater than 3; as Figure 3 shown, the M reference points are irregularly distributed within the area where the reference plane 1 is located, or, as Figure 4 shown, the M reference points are arrayed within the area where the reference plane 1 is located.

[0046] Specifically, the horizontal distance range between any two reference points is: 0.5 m to 1.5 m. It can be understood that the horizontal distance range between any two reference points can also be adaptively adjusted according to conditions such as the ship type, the complexity of the compartment division, and different requirements to meet regulations and specifications. Specifically, the horizontal distance between any two reference points can be one of 0.5 m, 0.6 m, 0.7 m, 0.8 m, 0.9 m, 1.0 m, 1.1 m, 1.2 m, 1.3 m, 1.4 m, 1.5 m, etc. Among them, the smaller the distance between two reference points, the longer the time required to generate the target point group, and the more accurate the result of the limiting waterplane generated based on the target point group, that is, it is closer to the true limiting waterplane; the larger the distance between two reference points, the shorter the time required to generate the target point group, and the relatively lower the accuracy of the result of the limiting waterplane generated based on the target point group. Exemplarily, in this embodiment, the horizontal distance between any two reference points is 0.8 m.

[0047] Specifically, along the height direction of the hull, the M reference points are all located below the reference plane 1. Among them, when the reference plane 1 is the water surface, the M reference points are all located below the water surface. As an alternative, when the reference plane 1 is the bottom surface of the hull, the M reference points are also all located below the water surface. As an alternative, when the reference plane 1 is the bottom surface of an offshore platform, the M reference points are also all located below the water surface.

[0048] S300. Obtain waterplane planes, where the number of waterplane planes is N, and N is a positive integer greater than 1.

[0049] Among them, obtaining the waterplane planes belongs to the prior art and will not be elaborated here.

[0050] S400. Successively correct the reference heights of each reference point in the reference point group 2 according to the N waterplane planes to obtain a target point group.

[0051] Specifically, correcting the reference heights of each reference point in the reference point group 2 according to one of the waterplane planes to obtain a target point group includes the following steps, as Figure 2 shown.

[0052] S401. Along the height direction of the hull, determine whether there is a reference height of a reference point in the reference point group 2 that is less than the height of the waterplane.

[0053] If there is a reference height of a reference point in the reference point group 2 that is less than the height of the waterplane, execute S402.

[0054] If the reference heights of the reference points in the reference point group 2 are all greater than or equal to the height of the waterplane, execute S403.

[0055] It can be understood that along the height direction of the hull, there are reference points in the reference point group 2 that are higher than the waterplane, reference points that are lower than the waterplane, and reference points that fall on the waterplane.

[0056] S402. Raise the reference height of the reference point to the height of the waterplane.

[0057] Specifically, only raise the part of the reference points in the reference point group 2 that are less than the height of the waterplane to the height position of the corresponding points mapped to the waterplane along the height direction of the hull by the reference points.

[0058] S403. The reference height of the reference point remains unchanged.

[0059] Among them, use each reference point obtained by correcting the reference point group 2 with the current waterplane as a new reference point, and use the reference height of each reference point obtained by correcting the reference point group 2 with the current waterplane as a new reference height to generate a new reference point group 2.

[0060] Repeat the execution of S401 to S403 until each reference point in the reference point group 2 is corrected according to all N waterplanes to obtain the target point group.

[0061] Compared with the prior art, it can avoid generating the extreme waterplane by overlapping, trimming and splicing multiple waterplanes, making the steps of generating the extreme waterplane simple and the time-consuming for generating the extreme waterplane short.

[0062] S500. Generate the extreme waterplane according to the target point group.

[0063] Among them, the extreme waterplane can be generated by creating a grid for the target point group; the extreme waterplane can also be generated by creating a surface for the target point group.

[0064] Among them, the methods of creating a grid and creating a surface through the point group are prior arts and will not be elaborated here.

[0065] Among them, Figure 5 the a curve in is the curve of the number of waterplanes input by the extreme waterplane generation method in the prior art and the time-consuming for generating the extreme waterplane,Figure 5 The b curve in is the curve of the number of waterplane planes input by the extreme water surface generation method of the present invention and the time-consuming for generating the extreme waterplane. It can be clearly seen that as the number of waterplane planes increases, the time required to generate the extreme waterplane by the extreme water surface generation method in the present invention is significantly reduced compared to the time required to generate the extreme waterplane by the extreme water surface generation method in the prior art.

[0066] The present invention also provides a ship, which applies the above extreme waterplane generation method. The steps are simple and can effectively shorten the time-consuming for generating the extreme waterplane.

[0067] The present invention also provides an offshore platform, which applies the above extreme waterplane generation method. The steps are simple and can effectively shorten the time-consuming for generating the extreme waterplane.

[0068] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A method for generating an extreme waterplane, characterized in that Including: Establish a reference plane (1); Establish a reference point group (2) based on the reference plane (1); Obtain waterplane planes, where the number of the waterplane planes is N, and N is a positive integer greater than 1; Successively correct the reference heights of each reference point in the reference point group (2) according to the N waterplane planes to obtain a target point group; Generate a limiting waterplane according to the target point group.

2. The method for generating an extreme waterplane according to claim 1, wherein Correct the reference heights of each reference point in the reference point group (2) according to one of the waterplane planes to obtain a target point group, which specifically includes the following steps: Along the height direction of the hull, determine whether there is a reference point in the reference point group (2) whose reference height is less than the height of the waterplane plane; If there is a reference point in the reference point group (2) whose reference height is less than the height of the waterplane plane, raise the reference height of the reference point to the height where the waterplane plane is located; If the reference heights of the reference points in the reference point group (2) are all greater than or equal to the height of the waterplane plane, the reference heights of the reference points remain unchanged.

3. The method for generating an extreme waterplane according to claim 1, wherein The reference point group (2) includes M reference points, and M is a positive integer greater than 3; the M reference points are irregularly distributed in the area where the reference plane (1) is located, or the M reference points are arrayed in the area where the reference plane (1) is located.

4. The method for generating an extreme waterplane according to claim 3, characterized in that The reference heights of the M reference points are the same, or at least one of the M reference points has a different height.

5. The extreme waterplane generation method according to claim 3, wherein, Along the height direction of the hull, the M reference points are all located below the reference plane (1).

6. The method for generating an extreme waterplane according to any one of claims 1-5, characterized in that The reference plane (1) is the water surface.

7. The extreme waterplane generation method according to any one of claims 1-5, characterized in that The target point group generates a limiting waterplane by creating a grid.

8. The extreme waterplane generation method according to any one of claims 1-5, characterized in that, The target point group generates a limiting waterplane by creating a surface.

9. A ship, characterized in that, Apply the limiting waterplane generation method according to any one of claims 1-8.

10. An offshore platform, characterized in that, Apply the limiting waterplane generation method according to any one of claims 1-8.

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