KR20120108734A - Moon pool equipped device for with reducing energy of a flowing seawater - Google Patents

Moon pool equipped device for with reducing energy of a flowing seawater Download PDF

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KR20120108734A
KR20120108734A KR1020110026978A KR20110026978A KR20120108734A KR 20120108734 A KR20120108734 A KR 20120108734A KR 1020110026978 A KR1020110026978 A KR 1020110026978A KR 20110026978 A KR20110026978 A KR 20110026978A KR 20120108734 A KR20120108734 A KR 20120108734A
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curved portion
flow
seawater
flow energy
curved
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KR1020110026978A
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Korean (ko)
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KR101444505B1 (en
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문승환
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현대중공업 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
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Earth Drilling (AREA)

Abstract

PURPOSE: A moon pool with a seawater flow energy reducing part is provided to enhance the resistance performance of a drill ship and to stabilize the internal seawater surface of a moon pool by reducing friction with first and second curved parts of a flow energy reducing part and the flow energy of seawater. CONSTITUTION: A moon pool with a seawater flow energy reducing part comprises a flow energy reducing part(200). The flow energy reducing part comprises a first curved part(210) and a second curved part(220). The first curved part reduces impact applied to a hull and the resistance due to seawater flowing in a stem part by forming a curved portion in a stem edge part of the moon pool in a stem direction. The second curved part has a curved portion, which is curved in the opposite direction of the first curved portion, to reduce flow energy by guiding the flow of the seawater crushed in the first curved part.

Description

해수의 유동에너지 저감부가 구비된 문풀{Moon pool equipped device for with reducing energy of a flowing seawater}Moon pool equipped device for with reducing energy of a flowing seawater}

본 발명은 해수의 유동에너지 저감부가 구비된 문풀에 관한 것으로, 문풀의 선미부 모서리에 단면의 형태가 S형태로 형성되는 유동에너지 저감부를 형성하여, 해수의 유동 흐름에 따른 에너지를 저감시켜 선체에 발생되는 진동이나 오버플로잉 현상을 저감시켜줄 수 있는 해수의 유동에너지 저감부가 구비된 문풀에 관한 것이다.
The present invention relates to a door pool provided with a flow energy reduction portion of the seawater, by forming a flow energy reduction portion formed in the form of the cross-section S shape at the edge of the stern portion of the moon pool, to reduce the energy according to the flow of seawater to the hull The present invention relates to a door pool provided with a flow energy reduction unit of seawater capable of reducing vibration and overflowing generated.

일반적으로 드릴십에는 시추 파이프 및 장비를 해저면으로 내려 보내기 위해 문풀(moon pool)이 형성되어 있다. Drillships typically have moon pools for drilling pipes and equipment down to the sea floor.

이런 문풀은 시추작업 등을 위해서는 필수 불가결한 것이지만, 드릴십의 주행시 매우 강한 유동 교란이 발생할 수 있다.These door pools are indispensable for drilling operations, but very strong flow disturbances may occur when driving the drillship.

상기 유동 교란은 문풀의 선수부 끝단에서 박리되는 볼텍스와 자유 수면 사이의 상호 작용에 의해 발생하는 것으로, 문풀 내 자유 수면을 불안정하게 하고 저항의 시간 변동량을 증가시켜 드릴십의 저항 성능을 나쁘게 한다.The flow disturbance is caused by the interaction between the vortex and the free surface peeled off at the bow end of the door pool, which destabilizes the free surface in the door pool and increases the time variation of the resistance, thereby deteriorating the resistance of the drillship.

도 1 은 종래의 문풀을 나타낸 예시도로서, 선체의 외부 유동(S10)은 선수부(10)에서 선미부(11)로 이동한다.1 is an exemplary view showing a conventional door pool, the outer flow (S10) of the hull moves from the bow portion 10 to the stern portion (11).

이때 문풀(100)의 선수부 모서리(110)에서는 유동이 박리되며 전단층의 불안정으로 인해 볼텍스(V10)가 생성된다.At this time, the flow is separated from the bow corner 110 of the door pool 100, and the vortex V10 is generated due to the instability of the shear layer.

상기 볼텍스(V10)는 유동의 흐름에 의해 문풀(100)의 선미부 모서리(120)에 부딪히게 됨으로써 강한 압력 교란이 발생하여 문풀(10)에 작용하는 저항의 시간 변동량을 증가시킨다.Since the vortex V10 hits the stern edge 120 of the door pool 100 by the flow of the flow, strong pressure disturbance occurs, thereby increasing the amount of time variation of the resistance acting on the door pool 10.

또한 선미부 모서리(120)에 충돌한 볼텍스(V10)에 의해 문풀 안으로 유입되는 유동(S11)이 발생되어 도 1 과 같이 문풀 내 자유수면(W10)을 교란시켜 자유수면 형태가 매우 불안정한 문제점이 있다.In addition, the flow (S11) is introduced into the door pool by the vortex (V10) impinged on the edge of the stern 120 is generated, disturbing the free water surface (W10) in the door pool as shown in FIG. .

또한 상기 문풀 안으로 유입되는 유동(S11)이 수직방향으로 진동할 때, 선박 또는 해양구조물이 진동을 일으켜 구조적으로 악영향을 미치는 문제점이 있다.In addition, when the flow (S11) flowing into the door pool vibrates in the vertical direction, there is a problem that the ship or offshore structure vibrates to structurally adversely affect.

또한 문풀 내부에서 문풀 안으로 유입되는 유동(S11)에 의해 펌핑 현상이 발생되고, 이런 펌핑 현상과 선방의 운동이 공진하게 될 때 선박의 진동이 가중되어 선박 또는 문풀(100) 내부 벽면에 심각한 타격을 주게 된다.In addition, the pumping phenomenon is generated by the flow (S11) flowing into the door pool from the inside of the door pool, when the pumping phenomenon and the forward motion is resonant, the vibration of the ship is aggravated and serious damage to the inner wall of the ship or door pool (100) Is given.

또한 문풀(100) 내부 유체의 유동으로 인한 선박의 선상으로 오버 플로잉(over flowing) 현상으로 인해 작업자의 안전 및 작업 능률을 악화시킬 수 있는 요인으로 작용될 수 있다.In addition, due to the overflow of the ship due to the flow of the fluid inside the door pool 100 (over flowing) may be a factor that may worsen the safety and work efficiency of the operator.

문풀(100)로 인한 선박 이동중의 저항 증가는 문풀(100)이 없는 선박에 비하여 1.5 내지 2.0배까지 증가하는 것으로 보고 되어 있으며, 이로 인해 선박의 속도가 저하되고 연료소모가 증가하게 된다.The increase in resistance during ship movement due to the door pool 100 is reported to increase by 1.5 to 2.0 times compared to the ship without the door pool 100, which causes the speed of the ship to decrease and fuel consumption to increase.

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, 문풀의 선미부 모서리 단면을 S형태로 형성하여 문풀의 선수부 측에서 이동하는 해수의 유속을 억제하고 해수의 흐름을 안정적으로 유도하여 유동에너지를 감소시켜줌으로써 선박의 진동으로 인한 선체의 손상을 최소화시켜줄 수 있도록 하고, 선박의 저항 성능이 향상 되도록 하는 해수의 유동에너지 저감부가 구비된 문풀을 제공함에 있다.
An object of the present invention for solving the above problems, by forming the stern edge cross section of the door pool in the S shape to suppress the flow rate of sea water moving from the bow side of the door pool and stably induce the flow of the sea water flow energy It is possible to minimize damage to the hull due to the vibration of the ship by reducing, and to provide a door pool equipped with a flow energy reduction portion of the sea water to improve the resistance performance of the ship.

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명은, 시추장비를 해저면으로 내려 보내기 위해 시추선이나 해양구조물에 형성되는 문풀에 있어서, 문풀의 선미 모서리부분에 선수 방향으로 만곡부를 형성하여 선수부에서 이동되는 해수에 의한 저항을 감소시켜주고 선체에 가해지는 충격이 저감되도록 하는 제1만곡부와, 상기 제1만곡부의 상부에 제1만곡부와 역방향으로 만곡부가 형성되어 제1만곡부에 부딪힌 해수 유동을 유도하여 유동에너지를 감소시켜주는 제2만곡부로 이루어진 유동에너지 저감부; 를 포함하여 구성되는 것을 특징으로 한다.The present invention to achieve the object as described above and to perform the problem for removing the conventional defects, in the door pool formed on the drilling vessel or offshore structure to send the drilling equipment down to the sea floor, the bow at the stern edge of the door pool The first curved portion is formed in the direction to reduce the resistance by the sea water moved from the bow portion to reduce the impact on the hull, and the curved portion is formed in the upper portion of the first curved portion in the opposite direction to the first curved portion is formed Flow energy reduction unit consisting of a second curved portion to reduce the flow energy by inducing the seawater flow hit the 1 curved portion; And a control unit.

또한 상기 제2만곡부의 끝단에서 해저방향으로 돌출되도록 형성되어 제2만곡부를 경유해 문풀내 자유수면으로 이동되는 해수의 유동을 억제하여 문풀 내 자유수면의 유동을 저감시켜주는 해수유동 억제턱; 을 더 포함하여 구성되는 것을 특징으로 한다.In addition, it is formed so as to protrude in the sea bottom direction at the end of the second curved portion seawater flow inhibiting jaw to reduce the flow of free water in the door pool by inhibiting the flow of sea water moved to the free surface in the door pool via the second curved portion; Characterized in that further comprises.

또한 상기 제2만곡부의 곡률반경(R2)은 제1만곡부의 곡률반경(R1)의 1.2 ~ 1.8배의 범위내로 형성되는 것을 특징으로 한다.
In addition, the radius of curvature R2 of the second curved portion is characterized in that formed in the range of 1.2 to 1.8 times the radius of curvature R1 of the first curved portion.

이상에서 설명한 바와 같이 본 발명에 의하면, 유동에너지 저감부의 제1만곡부와 제2만곡부를 통해 마찰을 줄여주고 해수의 유동 에너지를 저감시켜줌으로서, 드릴십의 저항 성능을 개선하고, 문풀의 내부로 유입되는 해수의 유동을 감소시켜 문풀 내부의 해수면을 안정화시킬 수 있으며, 오버 플로잉 현상을 최소화 하여 작업자의 안전한 작업이 가능하여 작업능률을 향상시킬 수 있는 매우 유용한 발명이다.
As described above, according to the present invention, by reducing the friction and reducing the flow energy of the seawater through the first curved portion and the second curved portion of the flow energy reduction portion, to improve the resistance performance of the drillship, which is introduced into the inside of the door pool It is a very useful invention that can reduce the flow of sea water to stabilize the sea level inside the door pool, and can improve the work efficiency by minimizing the overflow phenomenon and safe working of the worker.

도 1 은 종래의 문풀을 나타낸 예시도,
도 2 는 본 발명에 의한 문풀의 형태를 나타낸 예시도,
도 3 은 본 발명의 문풀에 의한 유동 특성을 나타낸 예시도,
도 4 는 본 발명에 의한 문풀의 제2만곡부에 해수유동 억제턱을 더 형성한 상태를 나타낸 예시도,1 is an exemplary view showing a conventional moon pool,
Figure 2 is an exemplary view showing the form of the moon pool according to the present invention,
Figure 3 is an exemplary view showing the flow characteristics by the moonpool of the present invention,
4 is an exemplary view showing a state in which the seawater flow suppressing jaw is further formed in the second curved portion of the door pool according to the present invention;

이하 본 발명의 실시 예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다. 또한 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

도 2 는 본 발명에 의한 문풀의 형태를 나타낸 예시도, 도 3 은 본 발명의 문풀에 의한 유동 특성을 나타낸 예시도로서, 도 4 는 본 발명에 의한 문풀의 제2만곡부에 해수유동 억제턱을 더 형성한 상태를 나타낸 예시도로서,Figure 2 is an exemplary view showing the shape of the door pool according to the present invention, Figure 3 is an exemplary view showing the flow characteristics by the door pool of the present invention, Figure 4 is a seawater flow suppressing jaw in the second curved portion of the door pool according to the present invention As an illustration showing the further formed state,

도면에서와 같이 시추파이프 및 장비를 해저면으로 내려 보내기 위해 시추선이나 해양구조물에 문풀(100)이 형성되어 있다.As shown in the figure, the door pool 100 is formed in the drilling vessel or offshore structure to send the drilling pipe and equipment to the sea floor.

상기 문풀(100)의 선미부 모서리(120)부분에는 단면의 형태가 S형태로 형성되어 선수부 모서리(110)에서 이동되는 해수의 유동에너지를 감소시켜주는 유동에너지 저감부(200)가 형성되어 있다.The stern edge 120 of the door pool 100 is formed with a S-shaped cross-section is formed a flow energy reduction unit 200 to reduce the flow energy of the sea water moved from the bow corner 110 .

상기 유동에너지 저감부(200)는, 문풀(100)의 선미부 모서리(120)부분에서 선수부 방향으로 만곡부를 형성하여 선수부에서 이동되는 해수에 의한 저항을 감소시켜주고 선체에 가해지는 충격이 저감되도록 하는 제1만곡부(210)와, 상기 제1만곡부(210)의 상부에서 제1만곡부(210)와 역방향으로 만곡부가 형성되어 제1만곡부(210)에 부딪혀 문풀(100) 내부로 유입되는 해수의 흐름을 유도하여 해수의 유동에너지를 감소시켜주는 제2만곡부(220)를 포함하여 구성된다.The flow energy reduction unit 200, by forming a curved portion in the bow direction at the stern edge 120 of the door pool 100 to reduce the resistance by the sea water moved from the bow portion and to reduce the impact on the hull The first curved portion 210 and the curved portion formed in the opposite direction to the first curved portion 210 from the upper portion of the first curved portion 210 is hit by the first curved portion 210 of the seawater flowing into the door pool 100 It comprises a second curved portion 220 for inducing the flow to reduce the flow energy of the sea water.

한편 상기 제2만곡부(220)의 곡률반경(R2)은 제1만곡부(210)의 곡률반경(R1)보다 크게 형성하되, 1.2 ~ 1.8배의 범위 내로 형성하여 제1만곡부(210)에 부딪혀 유도되는 해수의 유동에너지가 효과적으로 저감될 수 있도록 한다.Meanwhile, the radius of curvature R2 of the second curved portion 220 is formed to be larger than the radius of curvature R1 of the first curved portion 210, but is formed within a range of 1.2 to 1.8 times to induce a collision with the first curved portion 210. The flow energy of the seawater can be effectively reduced.

즉 제1만곡부(210)에 부딪힌 해수는 제1만곡부(210)의 외면을 타고 제2만곡부(220)로 안내되고 제2만곡부(200)의 내부로 안내된 해수는 제1만곡부(210)의 곡률반경(R1)보다 큰 곡률반경(R2)을 가지는 제2만곡부(220) 내면을 따라 이동하면서 유동에너지가 급격히 감소되어 문풀(100) 내부의 해수면이 안정화 되는 것이다.That is, the seawater that hit the first curved portion 210 is guided to the second curved portion 220 by riding on the outer surface of the first curved portion 210 and the seawater guided into the second curved portion 200 is the first curved portion 210. The flow energy is drastically reduced while moving along the inner surface of the second curved portion 220 having the radius of curvature R2 greater than the radius of curvature R1, thereby stabilizing the sea level inside the door pool 100.

한편 본 발명은 도 4 에서와 같이 상기 제2만곡부(220)의 상부 끝단에서 해저방향으로 돌출되도록 형성되어 제2만곡부(220)의 내부로 유입된 해수가 제2만곡부(220) 외부로 유출될 경우 부딪히게 함으로써 문풀 내 자유수면(W10)의 유동을 효과적으로 억제해주는 해수유동 억제턱(230)을 포함하여 구성된다.On the other hand, the present invention is formed so as to protrude in the sea bottom direction from the upper end of the second curved portion 220 as shown in Figure 4 is to be introduced into the interior of the second curved portion 220 to flow out of the second curved portion 220 In this case, it comprises a seawater flow inhibiting jaw 230 to effectively inhibit the flow of the free surface (W10) in the door pool by hitting.

이렇게 해수유동 억제턱(230)을 제2만곡부(220)의 상부에 형성함으로써 제2만곡부(220)의 내면을 따라 이동하는 해수가 제2만곡부(220)의 외부로 누출될 경우 해수유동 억제턱(230)에 부딪혀 속도가 저하되고 이로 인해 해수의 유동에너지가 감소됨으로써 문풀 내 자유수면(W10)이 안정화되는 것이다.
When the seawater flow inhibiting jaw 230 is formed above the second curved portion 220, the seawater moving along the inner surface of the second curved portion 220 leaks to the outside of the second curved portion 220. It hits 230 and the speed is lowered, thereby reducing the flow energy of seawater, thereby stabilizing the free water surface W10 in the door pool.

이와 같이 구성되는 본 발명의 문풀(100)을 통한 해수의 유동에너지 감소 과정을 설명하면, 선박이 주행할 경우 문풀(100)의 선수부(10)에서 문풀(100)의 선미부(11) 방향으로 선체의 외부 유동(S10)이 형성된다.Referring to the flow energy reduction process of the seawater through the door pool 100 of the present invention configured as described above, when the ship is traveling from the bow 10 of the door pool 100 toward the stern 11 of the door pool 100 An outer flow S10 of the hull is formed.

이때 선수부 모서리(110)에서 해수의 유동이 박리되어 볼텍스(V10)가 생성되며, 이러한 볼텍스(V10)는 유동 흐름에 의해 선미부 모서리(120) 형성된 유동에너지 저감부(200)에 부딪히게 된다.At this time, the flow of sea water is separated from the bow corner 110 to generate the vortex V10, and the vortex V10 is hit by the flow energy reduction unit 200 formed by the stern edge 120 by the flow of the flow.

보다 상세히 설명하면, 볼텍스(V10)는 해수의 유동 흐름에 의해 유동에너지 저감부(200)의 제1만곡부(210)에 부딪혀 일부는 제1만곡부(210)의 외면을 따라 제2만곡부(220)로 이동되며, 나머지는 문풀(10) 외측으로 흘러나가게 된다.In more detail, the vortex (V10) hits the first curved portion 210 of the flow energy reduction unit 200 by the flow of sea water, and part of the second curved portion 220 along the outer surface of the first curved portion 210. It is moved to, and the rest will flow out of the door pool (10).

즉 제1만곡부(210)의 만곡된 형상에 의해 볼텍스(V10)가 문풀(100)의 외부로 다량 유출되기 때문에 선박의 저항성능이 향상되고, 문풀(100) 외부로 유출되지 않은 해수는 제2만곡부(220)의 내부로 안내되는 것이다.That is, since a large amount of vortex V10 flows out of the door pool 100 due to the curved shape of the first curved part 210, resistance performance of the ship is improved, and seawater that does not flow out of the door pool 100 is second. It is guided to the interior of the curved portion 220.

이렇게 문풀(100) 안으로 유입되는 유동은 제2만곡부(220)의 내부면을 통해 이동하면서 유동에너지가 저감된 상태로 제2만곡부(220)의 외부로 누출됨으로써 문풀 내 자유수면(W10)이 안정화 된다.The flow flowing into the door pool 100 moves through the inner surface of the second curved portion 220 while leaking to the outside of the second curved portion 220 in a state in which the flow energy is reduced, thereby stabilizing the free water surface W10 in the door pool. do.

또한 제2만곡부(220)의 내부로 유입된 해수가 제2만곡부(220)의 외부로 누출될 경우 해수유동 억제턱(230)에 부딪히면서 제2만곡부(220)의 외부로 누출되기 때문에 유동에너지의 감소 효율이 보다 향상된다.
In addition, when the seawater introduced into the second curved portion 220 leaks to the outside of the second curved portion 220, the seawater flow is impeded to the outside of the second curved portion 220 while colliding with the flow restraining jaw 230. The reduction efficiency is further improved.

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 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10) : 선수부 (11) : 선미부
(100) : 문풀 (110) : 선수부 모서리
(120) : 선미부 모서리 (200) : 유동에너지 저감부
(210) : 제1만곡부 (220) : 제2만곡부
(230) : 해수유동 억제턱 (S10) : 선체의 외부 유동
(S11) : 문풀 안으로 유입되는 유동 (V10) : 볼텍스
(W10) : 문풀 내 자유수면(10): bow part (11): stern part
100: Moonpool 110: bow corner
120: stern edge 200: flow energy reduction
(210): first curved portion 220: second curved portion
230: seawater flow restriction jaw (S10): the outer flow of the hull
(S11): Flow flowing into the door pool (V10): Vortex
(W10): Free Sleep in Moonpool

Claims (3)

시추장비를 해저면으로 내려 보내기 위해 시추선이나 해양구조물에 형성되는 문풀에 있어서,
문풀의 선미 모서리부분에 선수 방향으로 만곡부를 형성하여 선수부에서 이동되는 해수에 의한 저항을 감소시켜주고 선체에 가해지는 충격이 저감되도록 하는 제1만곡부와, 상기 제1만곡부의 상부에 제1만곡부와 역방향으로 만곡부가 형성되어 제1만곡부에 부딪힌 해수 유동을 유도하여 유동에너지를 감소시켜주는 제2만곡부로 이루어진 유동에너지 저감부; 를 포함하여 구성되는 것을 특징으로 하는 해수의 유동에너지 저감부가 구비된 문풀.
In the door pool formed on the drilling vessel or offshore structure to send the drilling equipment to the sea floor,
A first curved portion formed at a stern edge of the moon pool in a bow direction to reduce resistance due to seawater moving from the bow portion and to reduce the impact on the hull; a first curved portion formed on the upper portion of the first curved portion; A flow energy reduction unit formed of a second curved portion formed in a reverse direction to reduce the flow energy by inducing seawater flows hitting the first curved portion; Moon pool provided with a flow energy reduction unit of the sea water, characterized in that comprising a.
제 1 항에 있어서,
상기 제2만곡부의 끝단에서 해저방향으로 돌출되도록 형성되어 제2만곡부를 경유해 문풀 내 자유수면으로 이동되는 해수의 유동을 억제하여 문풀 내 자유수면의 유동을 저감시켜주는 해수유동 억제턱; 을 더 포함하여 구성되는 것을 특징으로 하는 해수의 유동에너지 저감부가 구비된 문풀.
The method of claim 1,
A seawater flow suppressing jaw that is formed to protrude in the sea bottom direction from the end of the second curved portion and reduces the flow of the free surface in the moonpool by inhibiting the flow of seawater moving to the free surface in the moonpool via the second curved portion; Moonful provided with a flow energy reduction portion of the seawater, characterized in that further comprises.
제 1 항에 있어서,
상기 제2만곡부의 곡률반경(R2)은 제1만곡부의 곡률반경(R1)의 1.2 ~ 1.8배의 범위내로 형성되는 것을 특징으로 하는 해수의 유동에너지 저감부가 구비된 문풀.
















The method of claim 1,
The curvature radius (R2) of the second curved portion is a door pool with a flow energy reduction portion of the sea water, characterized in that formed in the range of 1.2 to 1.8 times the curvature radius (R1) of the first curved portion.
















KR1020110026978A 2011-03-25 2011-03-25 Moon pool equipped device for with reducing energy of a flowing seawater KR101444505B1 (en)

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Publication number Priority date Publication date Assignee Title
CN111791981A (en) * 2020-07-03 2020-10-20 中国船舶工业集团公司第七0八研究所 Device for reducing resistance of moon pool of ocean engineering ship

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KR20000004703A (en) * 1998-06-30 2000-01-25 이해규 Resistance reducing device of moonpool unit of ship
KR20000025585A (en) * 1998-10-13 2000-05-06 이해규 Reducing device for resistance of moon pool in ship
JP2001106172A (en) 1999-10-06 2001-04-17 Ishikawajima Harima Heavy Ind Co Ltd Frictional resistance reduced-ship
KR20110027404A (en) * 2009-09-10 2011-03-16 삼성중공업 주식회사 Floating marine structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111791981A (en) * 2020-07-03 2020-10-20 中国船舶工业集团公司第七0八研究所 Device for reducing resistance of moon pool of ocean engineering ship

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