Ship including bow having flat plates

Abstract

A ship according to an embodiment of the present invention comprises a hull having a bow. The bow may comprise: a plurality of flat plates arranged vertically with respect to the bottom surface of the hull; and a plurality of curved plates connecting at least a portion of the flat plates and the bottom surface.

Description

A vessel including a bow section with a reputation applied

[0001] The present invention relates to a vessel including a bow portion having a flat surface applied thereto.

[0002]

[0003] Resistance is a major factor that degrades the performance of moving machinery and equipment. Ships are exposed to numerous resistances, including energy loss due to pressure changes in the fluid surrounding the hull during propulsion, wave resistance generated by the bow, eddy resistance generated by propellers at the stern, and frictional resistance caused by friction between the hull surface and the flowing fluid. Therefore, extensive development has been conducted to reduce this resistance.

[0004] Conventional ships have attempted to increase the propulsion performance and fuel efficiency of ships by reducing the resistance acting on the ship. To this end, a bulbous bow-like structure was applied to the bow, and a streamlined outer plate was applied by linearly connecting each coordinate that constitutes the outer plate of the hull, thereby reducing the frictional resistance and wave resistance of the ship due to fluid.

[0005] As in the past, ships with a spherical bow are designed to have optimal pressure distribution and wave profile at the design draft and design speed. However, if the design draft and design speed are exceeded, the problem of increased resistance of the ship may occur.

[0006]

[0007] In order to solve at least some of the above problems, the present invention aims to provide a ship in which the bow portion of the hull is implemented using a plurality of flat plates so that the wave shape can maintain a similar shape when the ship is operating at various speeds.

[0008] The purpose of the present invention is not limited to the purposes mentioned above, and other purposes not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0009]

[0010] According to one embodiment of the present invention for achieving the above object, a ship includes a hull having a bow portion; wherein the bow portion may include a plurality of flat plates arranged perpendicular to a bottom surface of the hull and a plurality of curved plates connecting at least a portion of the plurality of flat plates and the bottom surface.

[0011] In one embodiment, the plurality of plates includes a plurality of starboard-side plates forming the starboard side of the bow section and a plurality of port-side plates forming the port side of the bow section, and the plurality of starboard-side plates and the plurality of port-side plates can be symmetrically arranged with respect to the center line of the hull.

[0012] In one embodiment, the plurality of flat plates may extend from the plurality of curved plates and be arranged from a first height or higher relative to the bottom surface of the hull.

[0013] In one embodiment, the plurality of plates may be arranged at least a second height from the structural draft line of the hull.

[0014] In one embodiment, the second height may be greater than the first height.

[0015] In one embodiment, the plurality of plates may be arranged at least a second height from the design draft line of the hull.

[0016] In one embodiment, the design draft line may be lower than the structural draft line of the hull.

[0017] In one embodiment, the second height may be 4 m.

[0018] In one embodiment, the plurality of plates may be arranged such that their widthwise edges are perpendicular to the bottom surface of the hull.

[0019] In one embodiment, the plurality of right-side flat plates and the plurality of left-side flat plates may have a shape in which the plurality of flat plates are each continuously connected, but two adjacent flat plates are connected while forming an obtuse angle.

[0020] In one embodiment, the hull further includes a central parallel section and a stern section positioned rearward of the central parallel section, and the bow section may be positioned forward of the central parallel section.

[0021] In one embodiment, the central parallel portion is a portion of the hull having a maximum cross-section, and both transverse side portions may be parallel to the centerline of the hull.

[0022] In one embodiment, the plurality of curved plates may form a bilge of the hull.

[0023] According to one embodiment of the present invention for achieving the above object, a hull includes a central parallel portion; a stern portion positioned at the rear of the central parallel portion; and a bow portion positioned at the front of the central parallel portion; wherein the bow portion may include a plurality of flat plates arranged perpendicular to a bottom surface and a plurality of curved plates connecting at least a portion of the plurality of flat plates and the bottom surface.

[0024] In one embodiment, the plurality of flat plates may extend from the plurality of curved plates and be positioned between a first height from the baseline and a second height from the waterline.

[0025]

[0026] According to one embodiment of the present invention, a vessel is provided with a plurality of flat plates extending vertically to the bow portion of the hull, thereby allowing the wave form to maintain a similar shape at various speeds.

[0027] The effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly recognized by those skilled in the art from the description below.

[0028]

[0029] Figure 1 is a perspective view of a vessel according to one embodiment of the present invention.

[0030] Figure 2 is a side view of a vessel according to one embodiment of the present invention.

[0031] Figure 3 is a plan perspective view of the bow portion of a ship according to one embodiment of the present invention.

[0032] Figure 4 is a bottom perspective view of the bow portion of a ship according to one embodiment of the present invention.

[0033] Figure 5 is a front view of the bow portion of a ship according to one embodiment of the present invention.

[0034]

[0035] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated and described in detail in the drawings. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0036] While terms such as "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component." The term "and / or" includes any combination of multiple related items described herein or any one of multiple related items described herein.

[0037] The terms "~bu, ~part, ~section, etc." may be used to describe various components, but the components should not be limited by the terms. The terms may refer not only to components that are physically / visibly distinct, but also to terms that describe the function or composition of a part even if the distinction / division is not clearly defined.

[0038] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0039] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0040] In the description below, the terms first and second, etc. may be used to describe various components, but these components are not limited in order, size, location, or importance by the terms first and second, etc., and are named only for the purpose of distinguishing one component from another.

[0041] Hereinafter, with reference to the attached drawings, a preferred embodiment of the present invention will be described in more detail.

[0042]

[0043] Figure 1 is a perspective view of a vessel according to one embodiment of the present invention.

[0044] Figure 2 is a side view of a vessel according to one embodiment of the present invention.

[0045] Figure 1 may be a perspective view looking at the starboard part of the ship (1), and Figure 2 may be a side view showing the starboard part of the ship (1).

[0046] FIG. 1 and FIG. 2 are intended to explain a bow portion (130) formed of a flat plate, and it can be understood that other elements provided on the ship (1) are omitted and only the hull (100) is illustrated.

[0047] Although not shown, other components may be additionally arranged inside and / or outside the hull (100) depending on the type of ship (1), and the type of ship (1) is not particularly limited. For example, the ship (1) according to one embodiment of the present invention may correspond to any one of a container ship, an oil tanker, a gas ship, and a bulk carrier, and preferably may be a container ship.

[0048] Referring to FIGS. 1 and 2, a hull (100) of a ship (1) according to one embodiment may include a central parallel portion (110), a bow portion (130) positioned forward of the central parallel portion (110) (e.g., in the +x-axis direction), and a stern portion (120) positioned rearward of the central parallel portion (110) (e.g., in the -x-axis direction).

[0049] The hull (100) may have a shape that is symmetrical on both sides with respect to a center line (CL) extending along the longitudinal direction. For example, the starboard and port sides of the hull (100) may be symmetrical with respect to the center line (CL).

[0050] The hull (100) may be formed into a shape in which a plurality of outer plates are connected. For example, the central parallel portion (110), the bow portion (130), and the stern portion (120) of the hull (100) each include a plurality of outer plates forming a side surface, a bottom surface, and / or a top surface, and the plurality of outer plates may be combined to form a predetermined shape. In this case, the plurality of outer plates may include flat plates and curved plates.

[0051] The central parallel portion (110) is located in the middle portion of the hull (100) and may be the portion with the widest cross-section (i.e., cross-section) in the width direction (e.g., y-axis direction). For example, the central parallel portion (110) may extend to a predetermined length along the longitudinal direction (e.g., x-axis direction) of the hull (100) while maintaining a predetermined cross-sectional shape.

[0052] The central parallel portion (110) may be arranged so that both sides are symmetrical with respect to the center line (CL) of the hull (100) and are parallel to each other. For example, the central parallel portion (110) may have a constant distance (e.g., width) between both sides along the longitudinal direction of the hull (100) and a constant cross-sectional area.

[0053] The central parallel section (110) is not located exactly in the center of the entire hull (100), but refers to a section located between the bow section (130) and the stern section (120). For example, the hull (100) may have a shape in which a bow section (130) is located in front of the central parallel section (110), whose width becomes narrower as it goes forward, and a stern section (120) is located in the rear, whose width becomes narrower as it goes rearward.

[0054] According to the illustrated embodiment, the central parallel portion (110) may be a shape that extends to a predetermined length along the longitudinal direction of the hull (100). However, the shape of the hull (100) is not limited to the illustrated shape, and depending on the type of ship (1), the central parallel portion (110) may be formed shorter or may be formed as a boundary line between the bow portion (130) and the stern portion (120). For example, oil tankers and gas ships (LNG, LPG) have a large shape, so the central parallel portion (110) is formed between the bow portion (130) and the stern portion (120) to be a predetermined length or longer to clearly distinguish them, but in the case of slender ships such as container ships, the central parallel portion (110) may be very short or may be formed with only one cross-section that separates the bow portion (130) and the stern portion (120).

[0055] The bow section (130) may be formed by a plurality of flat plates (140) extending parallel to the height direction (e.g., z-axis direction) of the hull (100) to form a hull structure forming both sides. For example, the bow section (130) may include a plurality of flat plates (140) connected to form both sides of the hull (100) and a plurality of curved plates (150) connecting the plurality of flat plates (140) and the bottom surface of the hull (100).

[0056] A plurality of flat plates (140) and a plurality of curved plates (150) can be arranged so that the bow section (130) is symmetrical with respect to the center line (CL). The plurality of flat plates (140) and the plurality of curved plates (150) can form the starboard and port sides of the bow section (130).

[0057] The shape of the bow member (130) composed of a plurality of flat plates (140) and a plurality of curved plates (150) is described in more detail with reference to FIGS. 3 to 5 below.

[0058]

[0059] Figure 3 is a plan perspective view of the bow portion of a ship according to one embodiment of the present invention.

[0060] Figure 4 is a bottom perspective view of the bow portion of a ship according to one embodiment of the present invention.

[0061] Figure 5 is a front view of the bow portion of a ship according to one embodiment of the present invention.

[0062] Fig. 3 is an enlarged perspective view of the bow section (130) of the hull (100) illustrated in Figs. 1 and 2. Fig. 4 is a perspective view of the bow section (130) illustrated in Fig. 3 as viewed in the -z-axis direction. Fig. 5 is a front view of the bow section (130) illustrated in Fig. 3 as viewed in the +x-axis direction.

[0063] Referring to FIGS. 3 and 4, a bow portion (130) of a hull (100) according to one embodiment may be formed in a form in which a plurality of flat plates (140) are connected along the longitudinal direction of the hull (100), and a plurality of curved plates (150) are connected to each of the plurality of flat plates (140). The plurality of curved plates (150) may be joined to the plurality of flat plates (140) by welding or the like. However, according to various embodiments, the plurality of flat plates (140) and the plurality of curved plates (150) may be integrally formed by processing a single plate.

[0064] The plurality of plates (140) may include a plurality of starboard-side plates (e.g., plates to the left of the centerline (CL) with reference to FIGS. 3 and 4 ) connected to form the starboard side of the hull (100) and a plurality of port-side plates (e.g., plates to the right of the centerline (CL) with reference to FIGS. 3 and 4 ) connected to form the starboard side of the hull (100). The bow portion (130) may be formed by connecting the plurality of starboard-side plates and the plurality of port-side plates symmetrically with respect to the centerline (CL).

[0065] Each of the plurality of flat plates (140) is arranged symmetrically with respect to the center line (CL) with a starboard side flat plate and a plurality of port side flat plates forming a pair, but the distance between them may increase as it goes toward the stern (120).

[0066] A plurality of flat plates (140) may be arranged perpendicular to the bottom surface (160) of the hull (100), and a plurality of curved plates (150) may connect the plurality of flat plates (140) and the bottom surface (160) or connect one or more pairs of starboard-side flat plates and port-side flat plates (e.g., 141, 142, 143) among the plurality of flat plates (140). The bottom surface of the hull (100) may be formed by connecting a plurality of outer plates, and may be oriented in the -z-axis direction based on the drawing.

[0067] The plurality of flat plates (140) may extend with the same width along the height direction (e.g., z-axis direction) perpendicular to the bottom surface (160) of the hull (100). The plurality of flat plates (140) may be arranged such that their width-direction edges are perpendicular to the bottom surface (160) of the hull (100). The plurality of flat plates (140) may be arranged such that their width-direction edges are parallel to the height direction. The plurality of flat plates (140) may have a rectangular shape.

[0068] The plurality of curved plates (150) may be referred to as a bilge as they are curved portions connecting the bottom (160) of the hull (100) and the side surfaces (e.g., the plurality of flat plates (140)) of the hull (100).

[0069] According to FIGS. 3 and 4, each of the plurality of plates (140) is illustrated as being formed using a single plate. However, the illustrated form is merely exemplary and is not limited thereto, and according to various embodiments, at least some of the plurality of plates (140) may be configured such that a plurality of sub-plates are connected (e.g., by welding, etc.) to form a single plate.

[0070] The plurality of plates (140) may include a pair of first plates (141) that are connected while forming a predetermined included angle to form a bow (or bow edge) (131). For example, a first plate (141a) on the starboard side and a first plate (141b) on the port side may be connected while forming an acute angle corresponding to the shape of the bow (130) that becomes wider toward the stern (120). The bow (131) may be formed by the edges of the first plate (141a) on the starboard side and the first plate (141b) on the port side that are connected to each other.

[0071] According to the illustrated embodiment, the starboard-side first plate (141a) and the port-side first plate (141b) can be connected by bending the edge portions where they are connected to each other at a predetermined curvature. Accordingly, the bow (131) of the bow section (130) can have a rounded shape. However, the illustrated embodiment is exemplary, and the starboard-side first plate (141a) and the port-side first plate (141b) can also be connected in an unbent shape so that the bow (131) of the bow section (130) does not become rounded.

[0072] To illustrate the illustrated form as an example, the plurality of plates (140) can be configured as a total of 18 plates, with 9 left-side plates and 9 right-side plates forming a pair each.

[0073] For example, a plurality of plates (140) may include a pair of first plates (141) connected to form a player, a pair of second plates (142) connected to a pair of first plates (141) while forming a predetermined included angle, a pair of third plates (143) connected to a pair of second plates (142) while forming a predetermined included angle with a pair of second plates (142), a pair of fourth plates (144) connected to a pair of third plates (143) while forming a predetermined included angle, a pair of fifth plates (145) connected to a pair of fourth plates (144) while forming a predetermined included angle, a pair of sixth plates (146) connected to a pair of fifth plates (145) while forming a predetermined included angle, a pair of seventh plates (147) connected to a pair of sixth plates (146) while forming a predetermined included angle, and a pair of seventh plates (147) connected to a pair of seventh plates (147) while forming a predetermined included angle. It may include a pair of eighth plates (148) connected while forming, and a pair of ninth plates (149) connected while forming a predetermined angle between the pair of eighth plates (148).

[0074] Here, the predetermined angle may be an obtuse angle for the shape of the bow section (130) that becomes wider as it goes toward the stern section (120).

[0075] The plurality of curved plates (150) correspond to the plurality of flat plates (140), and include a first curved plate (151) connecting a pair of first flat plates (141), a second curved plate (152) connecting a pair of second flat plates (142), a third curved plate (153) connecting a pair of third flat plates (143), a pair of fourth curved plates (154) connecting a pair of fourth flat plates (144) to the bottom surface (160), a pair of fifth curved plates (155) connecting a pair of fifth flat plates (145) to the bottom surface (160), a pair of sixth curved plates (156) connecting a pair of sixth flat plates (146) to the bottom surface (160), a pair of seventh curved plates (157) connecting a pair of seventh flat plates (147) to the bottom surface (160), and a pair of eighth flat plates (148) connecting the bottom surface (160). It may include a pair of ninth curved plates (159) connecting the eighth curved plate (158) and a pair of ninth flat plates (149) to the bottom surface (160).

[0076] A pair of ninth plates (149) may be connected to the central parallel portion (110) of the hull (100). At least some of the pair of first plates (141) to the pair of ninth plates (149) may be formed with different areas.

[0077] Meanwhile, the illustrated form and the description thereof are merely examples of the hull (100) of the present invention and do not limit the embodiments of the present invention. The number, shape, and / or connection structure of the plurality of flat plates (140) and the plurality of curved plates (150) may be varied based on the size, type, shape, etc. of the vessel (1). Preferably, the number of flat plates (140) constituting the bow section (130) may not exceed 100.

[0078] Hereinafter, with reference to FIG. 5, a description will be given of an area where multiple flat plates (140) are applied in the bow section (130). According to FIGS. 3 to 5, the multiple flat plates (140) are illustrated as extending vertically from the multiple curved plates (150) to the bottom surface (160) of the hull (100) and applied to the upper end of the bow section (130). However, this is merely a schematic illustration for convenience of explanation and corresponds to one of various embodiments of the present invention. For example, the multiple flat plates (140) may be applied only to a certain area along the height direction of the bow section (130).

[0079] Referring to FIG. 5, a baseline (BL), a design draft line (WL1), and a structural draft line (WL2) can be defined for the hull (100).

[0080] The baseline (BL) refers to a line that is parallel to the bottom (160) of the hull (100) and serves as a reference for the height of the hull (100). The design draft line (WL1) refers to a design draft line, a draft line at which the fluid performance of the ship (1) is optimal, and refers to a draft line that serves as a reference for the overall design of the ship (1). The structural draft line (WL2) refers to a scantling draft line, a draft line at the maximum load that can be carried considering the structural strength of the ship (1). Generally, the design draft line (WL1) is lower than the structural draft line (WL2), and in some cases, the design draft line (WL1) and the structural draft line (WL2) may be the same.

[0081] A plurality of reputations (140) can be applied from a first height (D1) or higher from the baseline (BL). Here, the first height (D1) may be about 0.1 m, but is not limited thereto.

[0082] The plurality of flat plates (140) may extend at least from the structural draft line (WL2) to a second height (D2). For example, the plurality of flat plates (140) may extend from the plurality of curved plates (150) to a position higher than the structural draft line (WL2) by a second height (D2). Here, the second height (D2) may be about 4 m, but is not limited thereto. The second height (D2) from the structural draft line (WL2) may mean a maximum range affected by the fluid force of water in the height direction of the bow portion (130) (i.e., a maximum range that water touches when the ship (1) is operating).

[0083] In a preferred embodiment, the plurality of plates (140) may be applied to an area between a first height (D1) from the baseline (BL) and a second height (D2) from the structural draft line (WL2). However, in the embodiment, the second height (D2) from the structural draft line (WL2) means a minimum height to which the plurality of plates (140) are applied, and the plurality of plates (140) may extend beyond the second height (D2) from the structural draft line (WL2).

[0084] Meanwhile, it is a preferred embodiment that a plurality of flat plates (140) are applied between the first height (D1) from the baseline (BL) and the second height (D2) from the structural draft line (WL2), but the present invention is not limited thereto.

[0085] According to various embodiments, the plurality of plates (140) may extend at least from the design draft line (WL1) to a second height (D2). For example, the plurality of plates (140) may extend from the plurality of curved plates (150) to a position higher than the design draft line (WL1) by a second height (D2). In this case, the area to which the plurality of plates (140) are applied may be between the first height (D1) from the baseline (BL) and the second height (D2) from the design draft line (WL1).

[0086] A vessel (1) according to an embodiment of the present invention can maintain wave resistance performance even in operating conditions that exceed the design draft and design speed by implementing the hull angle of the bow section (130) with a plurality of flat plates (140). In other words, the wave profile can maintain a similar shape at various speeds. In addition, since the bow section (130) is implemented with a plurality of flat plates (140), the bending processing is reduced, and thus the manufacturing of the hull (100) can be relatively easy compared to when the bow section (130) is streamlined.

[0087]

[0088] Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. A hull having a bow section; including; The above players, Comprising a plurality of flat plates arranged perpendicular to the bottom surface of the hull and a plurality of curved plates connecting at least a portion of the plurality of flat plates and the bottom surface, shipping.

2. In paragraph 1, The above multiple reputations are, Includes a plurality of starboard side plates forming the starboard side of the bow section and a plurality of port side plates forming the port side of the bow section, The plurality of starboard side plates and the plurality of port side plates are arranged symmetrically based on the center line of the hull. shipping.

3. In paragraph 1, The above multiple reputations are, Extending from the above plurality of curved plates, but arranged from a first height or higher based on the bottom surface of the hull, shipping.

4. In paragraph 3, The above multiple reputations are, At least arranged from the structural draft line of the above hull to the second height, shipping.

5. In paragraph 4, The above second height is greater than the above first height, shipping.

6. In paragraph 3, The above multiple reputations are, At least positioned from the design draft line of the above hull to the second height, shipping.

7. In paragraph 6, The above design draft line is lower than the structural draft line of the above hull. shipping.

8. In paragraph 4 or paragraph 6, The second height is 4m, shipping.

9. In paragraph 1, The above multiple reputations are, The width-wise corners are arranged perpendicular to the bottom of the hull, shipping.

10. In paragraph 2, The above plurality of right-side flat plates and the above plurality of left-side flat plates are, A shape in which multiple plates are connected continuously, but two adjacent plates are connected by forming an obtuse angle. shipping.

11. In paragraph 1, The above hull, Further comprising a central parallel section and a stern section located at the rear of the central parallel section, The above-mentioned player part is located in front of the central parallel part, shipping.

12. In paragraph 11, The above central parallel section is, A part of the above hull with the largest cross-section, and both transverse sides being parallel to the center line of the above hull, shipping.

13. In paragraph 1, The above plurality of curved plates form the bilge of the hull, shipping.

14. Central parallel section; The stern portion located at the rear of the central parallel portion; and Including a bow portion located in front of the central parallel portion; The above players, A plurality of flat plates arranged perpendicular to the bottom surface and a plurality of curved plates connecting at least a portion of the plurality of flat plates and the bottom surface, hull.

15. In paragraph 14, The above multiple reputations are, Extending from the above plurality of curved plates, and positioned between a first height from the baseline and a second height from the waterline, hull.

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