KR20100003504A - Twin bow bulb shape structure of ships - Google Patents

Twin bow bulb shape structure of ships Download PDF

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KR20100003504A
KR20100003504A KR1020080063436A KR20080063436A KR20100003504A KR 20100003504 A KR20100003504 A KR 20100003504A KR 1020080063436 A KR1020080063436 A KR 1020080063436A KR 20080063436 A KR20080063436 A KR 20080063436A KR 20100003504 A KR20100003504 A KR 20100003504A
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South Korea
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bow
ship
twin
shape
resistance
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KR1020080063436A
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Korean (ko)
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KR101011186B1 (en
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최영복
김성표
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대우조선해양 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/06—Shape of fore part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/46—Stems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Instructional Devices (AREA)
  • Toys (AREA)

Abstract

PURPOSE: A twin bow bulb-shaped structure of a ship is provided to reduce the resistance of tidal wave and maximize the area of a ship cargo space. CONSTITUTION: A twin bow bulb-shaped structure of a ship comprises two spherical bow shape parts(10a,10b). The spherical bow shape part is inclined in transverse direction of the bow hull form of the ship. The spherical bow shape part has continuous shapes toward the upper part of the design draft. The spherical bow shape part has continuous shapes toward the bow in consideration of the interference of ice pieces and the resistance of tidal wave. The central line of the spherical bow forms a fixed angle with the central line of the ship.

Description

선박의 트윈선수 벌브 형상 구조{Twin bow bulb shape structure of ships}Twin bow bulb shape structure of ships

본 발명은 선박의 트윈선수 벌브 형상 구조에 관한 것이다. 더욱 상세하게는 선박의 선수 화물창 면적의 감소를 최소화할 수 있도록 선수 앞쪽의 선형 폭을 극대화함과 더불어 조파 저항의 최소화 및 운항조건에 따른 선형의 최적화를 위한 트윈선수 벌브 형상 구조에 관한 것이다.The present invention relates to a twin bow bulb shape structure of a ship. More specifically, the present invention relates to a twin bow bulb structure for maximizing the linear width in front of the bow so as to minimize the reduction in the bow cargo hold area of the ship, minimizing the sowing resistance and optimizing the linearity according to the operating conditions.

선박의 초기설계단계에서 가장 중요한 것은 계획하고 있는 선형의 저항 및 추진 성능을 신속히 파악하는 것이며, 나아가서는 저항이 최소가 되며 추진 효율이 우수한 선형을 찾아내는 일이라 할 수 있다.The most important thing in the initial design stage of the ship is to quickly identify the resistance and propulsion performance of the planned linear, and furthermore, to find the linear with the lowest resistance and excellent propulsion efficiency.

선박의 저항을 최소화하기 위하여서는 선수부의 형상이 최소 조파 저항을 일으키는 형상이 되도록 하는데 착안하게 되며, 추진성능을 향상시키기 위하여서는 선미부의 형상이 추진기 면에서의 반류 분포가 균일하게 나타나는 형상이 되도록 착안하게 된다.In order to minimize the resistance of the ship, the shape of the bow is to be the shape that causes the minimum harmonic resistance, and in order to improve the propulsion performance, the shape of the stern is designed so that the return distribution on the propeller surface is uniform. Done.

더구나 최근 미래의 교통수단으로 초고속선 등과 같이 조파 저항을 크게 받 는 선형의 출현으로 조파 저항 해석에 관한 관심이 고조되고 있으며, 이에 대한 많은 연구가 수행되고 있다.In addition, the recent interest in harmonic resistance analysis is increasing due to the emergence of a linear wave receiving resistance such as high speed lines as a means of transportation in the future, and many studies have been conducted.

특히, 일반 상선에 있어서 조파 저항을 제어하기 위한 대표적인 수단으로서 구상선수 형상의 선수선형을 채택하는 것이 일반화되어있다. 이러한 기존의 선수 형상은 선박의 폭이 급하게 줄어드는 형상 때문에 선수 쪽에 제일 가까운 화물창의 크기가 제한을 받게 된다.In particular, it is common to adopt a bow linear shape of a spherical bow as a representative means for controlling the wave resistance in a normal merchant ship. This conventional bow shape is limited by the size of the cargo hold closest to the bow due to the shape of the ship is rapidly reduced in width.

도 1 및 도 2에 도시된 바와 같이, 종래의 단일 구상선수 형상(5)의 선형은 비교적 고속선박에서 조파 저항을 최소화하는데 매우 적합한 형상이지만, 상대적으로 조파 저항이 전 저항에 차지하는 비중이 작은 비교적 중속 이하의 선박에서는 저항감소 효과가 떨어지는 반면에 화물창 크기의 제약이 상대적으로 큰 단점이 있었다.As shown in Figs. 1 and 2, the linear shape of the conventional single bulb bow shape 5 is a shape that is very suitable for minimizing the harmonic resistance in a relatively high speed vessel, but relatively the relative proportion of the harmonic resistance to the total resistance is relatively small. In the case of medium speed ships, the effect of reducing the resistance was lowered, but the limitation of cargo hold size was relatively large.

즉, 도 3과 같이 종래 LNG 선박의 최대 폭을 갖는 위치에서의 외판(4)에서 볼 때, 1번 화물창의 선수측 격벽 형상(1)에 대하여 1번 화물창의 선수측 격벽 위치에서의 선형 형상(2)과 선수측 격벽 면적(3)의 각각 차지하는 비율이 상대적으로 떨어지는 단점이 있으며, 또한 조파 저항을 최소화하는데 한계가 있었다. That is, when viewed from the outer plate 4 at the position having the maximum width of the conventional LNG vessel as shown in Fig. 3, the linear shape at the bow side bulkhead position of the cargo hold No. 1 with respect to the bow side bulkhead shape 1 of the cargo hold No. 1 Each of the ratios (2) and bow side bulkhead area (3) is relatively inferior, and there is a limit in minimizing the harmonic resistance.

이에, 본 발명은 상기한 문제점을 해결하기 위한 것으로서 본 발명은 선수 부분의 선폭을 최대화하는 형상으로 유지하면서도 조파 저항을 최소화 할 수 있는 트윈선수 벌브 형상 구조를 채택함으로써 화물창의 면적극대화 및 조파 저항의 최소화하는데 그 목적이 있다.Accordingly, the present invention is to solve the above problems, the present invention adopts a twin bow bulb shape structure that can minimize the harmonic resistance while maintaining the shape of the line portion of the bow portion to maximize the width of the cargo hold to maximize the area and The purpose is to minimize.

상기한 본 발명의 목적을 달성하기 위한 기술적 사상으로서 본 발명에 의하면, 선박의 선수 선형에 폭 방향으로 경사진 2개의 구상선수 형상(10a)(10b)으로 설계된 트윈선수 벌브 형상 구조로 구성되어, 선박 화물창의 면적을 극대화함과 더불어 항해 시 조파 저항을 감소시키고, 극지 운항 성능을 향상시키는 것을 특징으로 하는 선박의 트윈선수 벌브 형상 구조를 제시한다.According to the present invention as a technical idea for achieving the above object of the present invention, it consists of a twin bow bulb shape structure designed with two spherical bow shape (10a) (10b) inclined in the width direction to the bow linear of the ship, The present invention proposes a twin bow bulb structure of a ship characterized by maximizing the area of the cargo hold and reducing the sowing resistance during navigation and improving the polar navigation performance.

본 발명에 의하면, 상기 2개의 구상선수 형상(10a)(10b)은 설계흘수의 위 방향으로 연속된 형상을 갖되, 조파 저항 및 얼음조각의 간섭을 감안하여 선수 방향으로 연장된 형상을 갖는 것을 특징으로 한다.According to the present invention, the two spherical bow shapes 10a and 10b have a continuous shape in the direction above the design draft, and have a shape extending in the bow direction in consideration of the wave resistance and the interference of the ice sculpture. It is done.

상술한 바와 같이 본 발명에 의하면, 선박 선수 부분의 선폭을 최대화하는 형상으로 유지하면서도 조파 저항을 최소화할 수 있는 트윈선수 벌브 형상 구조를 적용함으로써 LNG 선박 1번 화물창의 크기를 극대화하여 1번 화물창의 볼륨을 약 25% 늘릴 수 있다. 또한, 본 발명은 트윈선수 벌브 형상구조의 특징상 극지방을 운항할 수 있도록 쇄빙 특성(icebreaking capability)를 고려한 최적의 설계가 가능하다.According to the present invention as described above, by maximizing the size of the cargo hold No. 1 cargo tank by applying a twin bow bulb shape structure that can minimize the harmonic resistance while maintaining the shape of the ship bow portion to maximize the line width You can increase the volume by about 25%. In addition, the present invention is an optimal design considering the icebreaking capability (icebreaking capability) to operate the polar region due to the characteristics of the twin bow bulb shape structure.

이하, 본 발명의 실시 예에 대한 구성 및 그 작용을 첨부한 도면을 참조하면서 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

도 4 및 도 5는 본 발명에 따른 선박의 트윈선수 벌브 형상 구조를 나타낸 사시도 및 측면도이다. 도 6은 본 발명에 따른 선박의 트윈선수 벌브 격벽 단면적을 나타낸 측면도이다. 4 and 5 are a perspective view and a side view showing the twin bow bulb shape structure of the ship according to the present invention. Figure 6 is a side view showing the twin bow bulb bulkhead cross-sectional area of the ship according to the present invention.

도 4 및 도 5을 살펴보면, 본 발명은 LNG 선박의 선수 선형에 폭 방향으로 경사진 2개의 구상선수 형상(10a)(10b)으로 설계함으로써 선박의 선수 부분의 선폭을 최대화하는 형상으로 유지하면서 조파 저항을 최소화할 수 있는 트윈선수 벌브 형상 구조를 적용하였다.Referring to Figures 4 and 5, the present invention is designed by two spherical bow shape (10a) (10b) inclined in the width direction to the bow linear of the LNG vessel while maintaining the shape to maximize the line width of the bow portion of the ship sowing The twin bow bulb shape structure is applied to minimize the resistance.

이러한 구조에 의해 도 6과 같이, 본 발명의 실시 예로서 제시된 150k급 LNG선박에서 1번 화물창의 선수측 격벽의 면적(13)을 약 79% 증가시켜 최종적으로는 1번 화물창의 볼륨을 약 25% 증가시킬 수 있다.With this structure, as shown in FIG. 6, the area 13 of the bow side bulkhead of the cargo hold No. 1 in the 150k class LNG ship presented as an embodiment of the present invention is increased by about 79%, finally increasing the volume of the cargo hold No. 25 by about 25%. Can be increased by%.

여기서, 부호 11은 1번 화물창의 선수측 격벽 형상을 나타내고, 부호 12는 1번 화물창의 선수측 격벽 위치에서의 선형 형상을 나타내며, 부호 14는 선박의 최대 폭을 갖는 위치에서의 외판을 나타낸다.Here, reference numeral 11 denotes the bow side bulkhead shape of the cargo hold No. 1, reference numeral 12 denotes a linear shape at the bow side bulkhead position of the cargo hold No. 1, and reference numeral 14 denotes an outer shell at the position having the maximum width of the ship.

따라서, 본 발명은 폭 방향으로 경사진 2개의 구상선수 형상(10a)(10b)으로 설계함으로써 일반 항해시의 조파 저항 감소뿐만 아니라 극지 운항 성능도 매우 우수한 형상을 갖게 된다.Therefore, the present invention is designed with two spherical bow shapes 10a and 10b that are inclined in the width direction, so that the polar navigation performance as well as the reduction of the sowing resistance during normal sailing are very excellent.

도 7은 본 발명에 따른 선박의 트윈선수 벌브 형상을 나타낸 단면도이고, 도 8은 본 발명에 따른 선박의 트윈선수 벌브 형상 선도를 나타낸 단면도이다.7 is a cross-sectional view showing a twin bow bulb shape of the ship according to the present invention, Figure 8 is a cross-sectional view showing a twin bow bulb shape diagram of the ship according to the present invention.

도 7 및 도 8을 살펴보면, 본 발명은 선박의 선수 선형에 폭 방향으로 경사진 2개의 구상선수 형상(10a)(10b)으로 설계된 트윈선수 벌브 형상 구조에서 구상선수의 중심선(16)이 선박의 중심선(15)과 이루는 수직각도(17)로 이루어져 있다.Referring to Figures 7 and 8, the present invention is a twin bow bulb shape structure designed in the shape of two bulbous bows (10a, 10b) inclined in the width direction to the bow linear of the ship, the center line 16 of the bulbous bow is the It consists of a vertical angle (17) forming a center line (15).

다시 말해, 2개의 구상선수 형상(10a)(10b)의 사이 골짜기 즉, 선박의 중심선(15)을 포함하는 프로파일의 형상은 조파 저항 관점에서 최적화되어야 하며, 극지운항선박의 경우 깨어진 얼음조각을 잘 배출할 수 있는 형상으로 설계되어야 한다.In other words, the shape of the valley between the two bulbous bow shapes 10a and 10b, i.e. the profile including the centerline 15 of the ship, should be optimized in terms of the wave resistance, and in the case of polar flying vessels, the broken ice piece is well It must be designed in such a way that it can be ejected.

따라서, 종래 기술에서는 상대적으로 조파 저항이 전 저항에 차지하는 비중이 작은 비교적 중속 이하의 선박에서는 저항감소 효과가 떨어지는 반면에 화물창 크기의 제약이 상대적으로 큰 단점이 있었으나, 본 발명에 의하면 쇄빙 특성(Icebreaking capability)를 고려하여 트윈선수 벌브의 구상선수 형상(10a)(10b)은 설계흘수 위쪽으로 연속된 형상을 갖되 조파 저항 및 얼음조각의 간섭을 감안한 높이까지 선수 방향으로 연장된 형상을 갖도록 설계되었다.Therefore, in the prior art, the resistance reduction effect is inferior in the ship of relatively medium speed or less, where the sowing resistance occupies the entire resistance, while the limitation of the cargo hold size is relatively large. However, according to the present invention, icebreaking characteristics (Icebreaking) In consideration of capability, the bulbous bow shapes 10a and 10b of the twin bow bulbs are designed to have a continuous shape upward of the design draft but extend in the bow direction to a height in consideration of the interference of the sowing resistance and the ice sculpture.

상술한 바와 같이, 본 발명의 바람직한 실시 예로서 선박의 트윈선수 벌브 형상구조에 대해 설명하였으나, 본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능 한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 기술적 범위 내에 포함된다 할 수 있다.As described above, the twin bow bulb shape structure of the vessel has been described as a preferred embodiment of the present invention, but the present invention is not limited to the above-described specific preferred embodiment, which departs from the gist of the invention as claimed in the claims. Without this, any person having ordinary skill in the art to which the present invention pertains may make various modifications, and such changes may be included within the technical scope of the claims.

도 1 및 도 2는 종래 선박의 선수 형상 구조를 나타낸 사시도 및 측면도이다.1 and 2 are a perspective view and a side view showing the bow-shaped structure of a conventional vessel.

도 3은 종래 선박의 선수 격벽 단면적을 나타낸 측면도이다. 3 is a side view showing the bow bulkhead cross-sectional area of the conventional vessel.

도 4 및 도 5는 본 발명에 따른 선박의 트윈선수 벌브 형상 구조를 나타낸 사시도 및 측면도이다.4 and 5 are a perspective view and a side view showing the twin bow bulb shape structure of the ship according to the present invention.

도 6은 본 발명에 따른 선박의 트윈선수 벌브 격벽 단면적을 나타낸 측면도이다. Figure 6 is a side view showing the twin bow bulb bulkhead cross-sectional area of the ship according to the present invention.

도 7은 본 발명에 따른 선박의 트윈선수 벌브 형상을 나타낸 단면도이다.7 is a cross-sectional view showing the twin bow bulb shape of the ship according to the present invention.

도 8은 본 발명에 따른 선박의 트윈선수 벌브 형상 선도를 나타낸 단면도이다.8 is a cross-sectional view showing a twin bow bulb shape diagram of a ship according to the present invention.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

10a, 10b: 구상선수 형상10a, 10b: bulbous athlete shape

11: 1번 화물창의 선수측 격벽 형상11: Fore bulkhead shape of cargo hold 1

12: 1번 화물창의 선수측 격벽 위치에서의 선형 형상12: Linear shape at the fore bulkhead position of Cargo 1

13: 1번 화물창의 선수측 격벽 면적13: Fore bulkhead area of cargo hold 1

14: 선박의 최대 폭을 갖는 위치에서의 외판14: shell plating at the position with the maximum breadth of the ship

15: 선박의 중심선15: centerline of the ship

16: 구상선수의 중심선16: centerline of the athlete

17: 구상선수의 중심선이 선박의 중심선과 이루는 수직각도17: Vertical angle of the center line of the bulbous bow with the center line of the ship

Claims (2)

선박의 선수 선형에 폭 방향으로 경사진 2개의 구상선수 형상(10a)(10b)으로 설계된 트윈선수 벌브 형상 구조로 구성되어, 선박 화물창의 면적을 극대화함과 더불어 항해 시 조파 저항을 감소시키고, 극지 운항 성능을 향상시키는 것을 특징으로 하는 선박의 트윈선수 벌브 형상 구조.It consists of twin bow-bulb-shaped structure designed with two bulbous bow shapes (10a) and (10b) inclined in the width direction to the bow linearity of the ship, maximizing the cargo hold area and reducing the sowing resistance during voyage. Twin bow bulb shape structure of a ship characterized by improving the navigation performance. 제 1 항에 있어서, 상기 2개의 구상선수 형상(10a)(10b)은 설계흘수의 위 방향으로 연속된 형상을 갖되, 조파 저항 및 얼음조각의 간섭을 감안하여 선수 방향으로 연장된 형상을 갖는 것을 특징으로 하는 선박의 트윈선수 벌브 형상 구조.The method according to claim 1, wherein the two bulbous bow shapes (10a, 10b) have a shape that is continuous in the direction above the design draft, and has a shape extending in the bow direction in consideration of the interference of the sowing resistance and the ice sculpture. Twin bow bulb shape structure of the ship characterized by the above-mentioned.
KR1020080063436A 2008-07-01 2008-07-01 Twin bow bulb shape structure of LNG ships KR101011186B1 (en)

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CN104192262A (en) * 2014-09-01 2014-12-10 中国船舶工业集团公司第七〇八研究所 Stern shape structure of ice navigation ship
KR20200041459A (en) 2018-10-12 2020-04-22 대우조선해양 주식회사 Wedge structure for reducing ice resistance in arctic vessel
JP2020132027A (en) * 2019-02-22 2020-08-31 ジャパンマリンユナイテッド株式会社 Bow shape and ship

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