JP2015077967A - Free surface type roll reduction tank - Google Patents

Free surface type roll reduction tank Download PDF

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JP2015077967A
JP2015077967A JP2014211665A JP2014211665A JP2015077967A JP 2015077967 A JP2015077967 A JP 2015077967A JP 2014211665 A JP2014211665 A JP 2014211665A JP 2014211665 A JP2014211665 A JP 2014211665A JP 2015077967 A JP2015077967 A JP 2015077967A
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reduction tank
free water
fluid
raised bottom
roll reduction
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ビョンホン ジュン
Byoung-Hoon Jung
ビョンホン ジュン
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HD Hyundai Heavy Industries Co Ltd
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Hyundai Heavy Industries Co Ltd
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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 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses
    • B63B39/03—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses by transferring liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Rolling Contact Bearings (AREA)
  • Sewage (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a free surface type roll reduction tank, and more specifically, a free surface type roll reduction tank which has an elevated bottom face formed to enable a smaller amount of fluid to provide the same level of roll reduction effect.SOLUTION: A free surface type roll reduction tank 100 comprises: a tank body 110 to provide a closed space to accommodate a free surface fluid 150; and an elevated bottom face 130 formed on a bottom of the tank body in a protruding geometry to enable an outer side to accommodate a larger amount of fluid.

Description

本発明は、自由水面型横揺れ低減タンクに関するものであって、より詳細には、隆起した底面を形成し、より少ない流体の量で同等水準の横揺れ低減効果をもたらす自由水面型横揺れ低減タンクに関するものである。 The present invention relates to a free water type roll reduction tank, and more particularly, a free water type roll reduction that forms a raised bottom surface and provides an equivalent level of roll reduction effect with a smaller amount of fluid. It is about the tank.

一般に、横揺れ低減タンクは、外部から動力が伝達されず、別途の制御を行わない受動型（ｐａｓｓｉｖｅ ｔｙｐｅ）と、外部の動力または制御が加えられる能動型（ａｃｔｉｖｅ ｔｙｐｅ）とに区分することができる。
受動型の場合には、１９１１年、フラーム（Ｆｒａｈｍ）がＵチューブタイプの横揺れ低減タンクを開発し、スティグター（Ｓｔｉｇｔｅｒ）がこれを理論的に究明して解析を行うことにより、多くの船舶に適用されてきた。
本発明に関連する先行文献としては、大韓民国公開特許第１０−２０１１−０１０１８７０号（公開日：２０１１年９月１６日）があり、前記先行文献には、横揺れ低減型船舶および船舶の横揺れ制御方法に関する技術が開示されている。 In general, the roll reduction tank is divided into a passive type in which power is not transmitted from the outside and no separate control is performed, and an active type in which external power or control is applied. it can.
In the case of the passive type, in 1911, Frahm developed a U-tube type roll reduction tank, and Stigter theoretically investigated and analyzed it, and in many ships, Has been applied.
As a prior document related to the present invention, there is Korean Published Patent No. 10-2011-0101870 (publication date: September 16, 2011), which includes a roll-reducing ship and a roll of a ship. A technique related to a control method is disclosed.

大韓民国公開特許第１０−２０１１−０１０１８７０号明細書Korean Published Patent No. 10-2011-0101870

本発明の目的は、より少ない量の流体を用いて横揺れ低減効果を発揮することができる自由水面型横揺れ低減タンクを提供することである。 An object of the present invention is to provide a free water surface type rolling reduction tank capable of exerting a rolling reduction effect using a smaller amount of fluid.

本発明は、自由水面流体を収容する密閉空間を提供するタンク本体と、前記タンク本体の底に突出した形態で形成され、外側により多量の流体が収容されるようにする隆起底面とを含むことを特徴とする、自由水面型横揺れ低減タンクを提供する。
前記隆起底面は、左右対称の形状を有し、水平状態で中心から外側にいくほど前記タンク本体に収容される流体の水深が深くなるように形成されることが好ましい。
この時、前記隆起底面は、中心から外側にいくほど下方傾斜した傾斜面に形成されるか、中心から外側にいくほど水深が深くなる曲面に形成されてよい。
また、前記隆起底面は、中心部に隆起平面を備え、中心部の流体収容量を減少させることができる。
この時、前記隆起平面の両側に傾斜面を備えるか、曲面を備えることができる。
一方、前記隆起底面は、凸の曲面と凹の曲面とを含んで形成されてもよい。 The present invention includes a tank body that provides a sealed space for storing a free water surface fluid, and a raised bottom surface that is formed in a protruding shape at the bottom of the tank body and that accommodates a larger amount of fluid on the outside. A free water surface type rolling reduction tank is provided.
Preferably, the raised bottom surface has a symmetrical shape and is formed such that the depth of fluid contained in the tank main body becomes deeper from the center toward the outside in a horizontal state.
At this time, the raised bottom surface may be formed as an inclined surface inclined downward as it goes outward from the center, or may be formed as a curved surface whose water depth becomes deeper as it goes outward from the center.
In addition, the raised bottom surface has a raised flat surface in the center, and can reduce the amount of fluid contained in the center.
At this time, an inclined surface may be provided on both sides of the raised plane, or a curved surface may be provided.
Meanwhile, the raised bottom surface may include a convex curved surface and a concave curved surface.

本発明にかかる自由水面型横揺れ低減タンクは、荷重作用点をタンクの形状によって外側部分に位置位させることにより、同じ重量でより向上した横揺れ低減効果を達成することができ、より少ない重量で同等水準の横揺れ低減効果をもたらす。 The free water surface type rolling reduction tank according to the present invention can achieve the improved rolling reduction effect with the same weight by positioning the load acting point on the outer part by the shape of the tank, and the weight is less. Will bring about the same level of rolling reduction effect.

一般的な自由水面型横揺れ低減タンクを示す図である。It is a figure which shows a general free water surface type rolling reduction tank. 本発明の第１実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 1st Embodiment of this invention. 本発明の第２実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 2nd Embodiment of this invention. 本発明の第３実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 3rd Embodiment of this invention. 本発明の第４実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 4th Embodiment of this invention. 本発明の第５実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 5th Embodiment of this invention. 本発明の第６実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 6th Embodiment of this invention. 本発明の第７実施形態にかかる自由水面型横揺れ低減タンクを示す図である。It is a figure which shows the free water surface type rolling reduction tank concerning 7th Embodiment of this invention.

以下、本発明にかかる自由水面型横揺れ低減タンクに関して詳細に説明する。
本発明の利点および特徴、そしてそれらを達成する方法は、添付した図面と共に、詳細に後述する実施形態を参照すれば明確になるであろう。しかし、本発明は、以下に開示される実施形態に限定されるものではなく、互いに異なる多様な形態で実現され、単に本実施形態に限定されるものではなく、互いに異なる多様な形態で実現され、単に本実施形態は本発明の開示が完全になるようにし、本発明の属する技術分野における通常の知識を有する者に発明の範疇を完全に知らせるために提供されるものであり、本発明は請求項の範疇によってのみ定義される。 Hereinafter, the free water surface type rolling reduction tank according to the present invention will be described in detail.
Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and is realized in various forms different from each other. The present invention is not limited to the present embodiments, and is realized in various forms different from each other. The embodiments are merely provided so that the disclosure of the present invention will be complete, and for those who have ordinary knowledge in the technical field to which the present invention belongs to fully inform the scope of the invention. Defined only by the scope of the claims.

図１は、一般的な自由水面型横揺れ低減タンクを示す図である。
一般に、自由水面型横揺れ低減タンク１０は、海上構造物の船体２０の内部で左右舷方向に左右対称の形態で形成される。また、自由水面型横揺れ低減タンク１０は、内部に流体１５を収容する密閉空間を形成し、流体１５は自由水面を有するように貯留される。
船体２０との関係において、自由水面型横揺れ低減タンク１０は、船体２０の回転中心３０に対して左右対称の形態で配置される。また、自由水面型横揺れ低減タンク１０は、図示のように、船体２０の回転中心３０に対して上部に位置することができるが、これに限らず、船体２０の形状などに応じてタンクの位置が変更可能である。 FIG. 1 is a diagram illustrating a general free water surface type rolling reduction tank.
In general, the free water surface type rolling reduction tank 10 is formed in a symmetrical form in the left-right direction within the hull 20 of an offshore structure. Moreover, the free water surface type rolling reduction tank 10 forms the sealed space which accommodates the fluid 15 inside, and the fluid 15 is stored so that it may have a free water surface.
In relation to the hull 20, the free water surface type rolling reduction tank 10 is arranged in a bilaterally symmetrical form with respect to the rotation center 30 of the hull 20. Further, as shown in the figure, the free-water surface roll reduction tank 10 can be positioned above the rotation center 30 of the hull 20, but is not limited to this, and the tank of the tank can be changed according to the shape of the hull 20. The position can be changed.

図２は、本発明の第１実施形態にかかる自由水面型横揺れ低減タンクを示す図である。本発明の第１実施形態にかかる自由水面型横揺れ低減タンク１００は、自由水面流体１５０を収容する密閉空間を提供するタンク本体１１０と、タンク本体１１０の底に突出した形態で形成され、前記タンク本体１１０の中心部よりは外側部により多量の流体が収容されるようにする隆起底面１３０とを含む。
前記隆起底面１３０は、タンク本体１１０とは別途に製作され、前記タンク本体１１０の底面に付着する形態となっていてもよく、前記タンク本体１１０の底面と一体に製作されてもよい。
前記タンク本体１１０は、流体を収容する密閉空間を提供する。流体は、前記タンク本体１１０の内部に自由水面を有するように貯留され、横揺れによってモーメントを発生させる。 FIG. 2 is a view showing the free water surface rolling reduction tank according to the first embodiment of the present invention. The free water surface rolling reduction tank 100 according to the first embodiment of the present invention is formed with a tank body 110 that provides a sealed space for storing a free water surface fluid 150, and a shape protruding from the bottom of the tank body 110, And a raised bottom surface 130 that allows a larger amount of fluid to be accommodated in the outer portion than in the central portion of the tank body 110.
The raised bottom surface 130 may be manufactured separately from the tank body 110 and may be attached to the bottom surface of the tank body 110, or may be manufactured integrally with the bottom surface of the tank body 110.
The tank body 110 provides a sealed space for containing a fluid. The fluid is stored inside the tank body 110 so as to have a free water surface, and generates a moment by rolling.

自由水面型横揺れ低減タンク１００は、タンク本体１１０の横揺れモーメントと自由水面運動によって発生する、前記タンク本体１１０の内部に収容された流体１５０のモーメントとの位相差によって、船体の横揺れを低減させる役割を果たす。
本発明は、横揺れ低減タンク１００の形状に変化を与えて、より少ない流体の量でより大きなモーメントを発生可能にするためのものである。より具体的には、流体の荷重作用点を外側に移動させる隆起底面１３０の形状を提供するためのものである。
隆起底面１３０は、左右対称の形状を有する。これは、左右方向の横揺れに対して均一な低減効果を達成するためのものである。
また、隆起底面１３０は、タンク本体１１０が水平を維持した状態で、中心の水深が外側の水深より低くなるように形成されることが好ましい。すなわち、中心の底面が上部に向かって隆起した形態を有することが好ましい。
隆起底面１３０は、様々な形態を有することができるが、図２の場合、中心から外側にいくほど下方傾斜した傾斜面に形成されたことを示すものである。
本発明にかかる自由水面型横揺れ低減タンク１００は、隆起底面１３０の形状によって中心部と外側部に貯留される流体の流量が異なるようにすることにより、流体による荷重の作用点が一般的な横揺れ低減タンクに比べて外側に移動することで、より少ない量の流体を用いて横揺れ低減効果を達成することができる。 The free water surface-type roll reduction tank 100 causes the hull to roll due to the phase difference between the roll moment of the tank body 110 and the moment of the fluid 150 contained in the tank body 110 generated by the free water surface motion. Play a role in reducing.
The present invention is to change the shape of the roll reduction tank 100 so that a larger moment can be generated with a smaller amount of fluid. More specifically, it is to provide the shape of the raised bottom surface 130 that moves the load application point of the fluid outward.
The raised bottom surface 130 has a symmetrical shape. This is to achieve a uniform reduction effect with respect to the lateral roll.
In addition, the raised bottom surface 130 is preferably formed so that the water depth at the center is lower than the water depth at the outside in a state where the tank main body 110 is kept horizontal. That is, it is preferable that the bottom surface of the center has a form in which it protrudes toward the upper part.
The raised bottom surface 130 may have various forms, but in the case of FIG. 2, it indicates that the raised bottom surface 130 is formed as an inclined surface that is inclined downward as it goes outward from the center.
In the free water surface type rolling reduction tank 100 according to the present invention, the flow point of the fluid stored in the central portion and the outer portion differs depending on the shape of the raised bottom surface 130, so that the action point of the load by the fluid is general. By moving outward compared to the roll reduction tank, the roll reduction effect can be achieved using a smaller amount of fluid.

図３は、本発明の第２実施形態にかかる自由水面型横揺れ低減タンクを示す図であり、図４は、本発明の第３実施形態にかかる自由水面型横揺れ低減タンクを示す図である。
図３の第２実施形態は、隆起底面１３１が凸の曲面形状に形成された形態を示すものであり、図４の第３実施形態は、隆起底面１３２が凹の曲面に形成された形態を示すものである。 FIG. 3 is a diagram illustrating a free water surface type rolling reduction tank according to a second embodiment of the present invention, and FIG. 4 is a diagram illustrating a free water surface type rolling reduction tank according to a third embodiment of the present invention. is there.
3 shows a form in which the raised bottom surface 131 is formed in a convex curved surface shape, and the third embodiment in FIG. 4 shows a form in which the raised bottom surface 132 is formed in a concave curved surface. It is shown.

図５は、本発明の第４実施形態にかかる自由水面型横揺れ低減タンクを示す図である。図５の第４実施形態は、隆起底面の中心部に隆起平面１３３を備えた形態を示すものである。隆起平面１３３が中心部に形成されることにより、中心部に貯留可能な流体の流量が減少し、これにより、流体の荷重作用点が外側に移動する効果を得る。   FIG. 5 is a view showing a free water surface rolling reduction tank according to a fourth embodiment of the present invention. The fourth embodiment in FIG. 5 shows a form in which a raised flat surface 133 is provided at the center of the raised bottom surface. By forming the raised plane 133 at the center, the flow rate of the fluid that can be stored in the center is reduced, thereby obtaining the effect of moving the load application point of the fluid to the outside.

図６は、本発明の第５実施形態にかかる自由水面型横揺れ低減タンクを示す図であり、図７は、本発明の第６実施形態にかかる自由水面型横揺れ低減タンクを示す図である。
図６の第５実施形態は、隆起平面１３３の外側に傾斜面１３４が連結された形態で形成された隆起底面を示すものであり、図７の第６実施形態は、隆起平面１３３の外側に曲面１３５が連結された形態で形成された隆起底面を示すものである。
図８は、本発明の第７実施形態にかかる自由水面型横揺れ低減タンクを示す図である。
第７実施形態は、中央部に凸の曲面１３６とその両側の凹の曲面１３７とによって隆起底面が形成された形態を示すものである。
以上、本発明にかかる自由水面型横揺れ低減タンクは、多様な形態の隆起底面を用いて外側部に相対的に多い流体が貯留されるようにすることにより、モーメントの作用点を外側に移動させる効果をもたらす。
結果的に、一定水準の横揺れ低減効果のために必要な流体の量を減少させることにより、全体の重量を減少させることができる効果をもたらす。 FIG. 6 is a view showing a free water surface roll reduction tank according to a fifth embodiment of the present invention, and FIG. 7 is a view showing a free water surface roll reduction tank according to a sixth embodiment of the present invention. is there.
The fifth embodiment of FIG. 6 shows a raised bottom surface formed by connecting the inclined surface 134 to the outside of the raised plane 133, and the sixth embodiment of FIG. The raised bottom surface formed in the form where the curved surface 135 was connected is shown.
FIG. 8 is a view showing a free water surface rolling reduction tank according to a seventh embodiment of the present invention.
7th Embodiment shows the form by which the protruding bottom face was formed by the convex curved surface 136 in the center part, and the concave curved surface 137 of the both sides.
As described above, the free-water-type roll reduction tank according to the present invention moves the action point of the moment to the outside by storing a relatively large amount of fluid in the outer portion using the raised bottom surface in various forms. Bring about an effect.
As a result, by reducing the amount of fluid required for a certain level of roll reduction effect, the overall weight can be reduced.

添付した図面を参照して本発明の実施形態を説明したが、本発明は、上記の実施形態に限定されるものではなく、互いに異なる多様な形態に変形可能であり、本発明の属する技術分野における通常の知識を有する者は、本発明の技術的思想や必須の特徴を変更することなく他の具体的な形態で実施可能であることを理解することができる。そのため、以上に述べた実施形態は、すべての面で例示的なものであり、限定的ではないと理解しなければならない。   Although the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, and can be modified in various forms different from each other, and the technical field to which the present invention belongs. Those skilled in the art can understand that the present invention can be implemented in other specific forms without changing the technical idea and essential features of the present invention. Therefore, it should be understood that the above-described embodiment is illustrative in all aspects and not restrictive.

１０：自由水面型横揺れ低減タンク
１５：流体
２０：船体
３０：回転中心
１００：自由水面型横揺れ低減タンク
１１０：タンク本体
１３０、１３１、１３２：隆起底面
１３３：隆起平面
１３４：傾斜面
１３５：曲面
１３６：凸の曲面
１３７：凹の曲面
１５０：流体 10: Free water type roll reduction tank 15: Fluid 20: Hull 30: Center of rotation 100: Free water type roll reduction tank 110: Tank main bodies 130, 131, 132: Raised bottom surface 133: Raised plane 134: Inclined surface 135: Curved surface 136: Convex curved surface 137: Concave curved surface 150: Fluid

Claims (8)

自由水面流体を収容する密閉空間を提供するタンク本体と、
前記タンク本体の底に突出した形態で形成され、外側により多量の流体が収容されるようにする隆起底面とを含むことを特徴とする、自由水面型横揺れ低減タンク。 A tank body that provides a sealed space for containing a free surface fluid;
A free water surface type rolling reduction tank, characterized in that it includes a raised bottom surface that is formed in a protruding shape at the bottom of the tank body and accommodates a larger amount of fluid on the outside. 前記隆起底面は、
左右対称の形状を有し、水平状態で中心から外側にいくほど前記タンク本体に収容される流体の水深が深くなるように形成されることを特徴とする、請求項１に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
2. The free water surface type according to claim 1, wherein the free water surface type has a symmetrical shape, and is formed such that a water depth of the fluid stored in the tank body becomes deeper from the center toward the outside in a horizontal state. Roll reduction tank. 前記隆起底面は、
中心から外側にいくほど下方傾斜した傾斜面に形成されることを特徴とする、請求項２に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
3. The free water surface roll reduction tank according to claim 2, wherein the free water surface type rolling reduction tank is formed on an inclined surface that is inclined downward as it goes outward from the center. 前記隆起底面は、
中心から外側にいくほど水深が深くなる曲面に形成されることを特徴とする、請求項２に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
The free water surface type rolling reduction tank according to claim 2, wherein the free water surface type rolling reduction tank is formed into a curved surface in which the water depth becomes deeper from the center toward the outside. 前記隆起底面は、
中心部に隆起平面を備え、中心部の流体収容量を減少させることを特徴とする、請求項１に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
The free-water-type roll reduction tank according to claim 1, further comprising a raised flat surface at a central portion to reduce a fluid capacity of the central portion. 前記隆起底面は、
前記隆起平面の両側に傾斜面を備えることを特徴とする、請求項５に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
6. The free water surface type roll reduction tank according to claim 5, further comprising inclined surfaces on both sides of the raised plane. 前記隆起底面は、
前記隆起平面の両側に曲面を備えることを特徴とする、請求項５に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
The free-water-type roll reduction tank according to claim 5, wherein curved surfaces are provided on both sides of the raised plane. 前記隆起底面は、
凸の曲面と凹の曲面とを含むことを特徴とする、請求項２に記載の自由水面型横揺れ低減タンク。 The raised bottom surface is
The free water type roll reduction tank according to claim 2, comprising a convex curved surface and a concave curved surface.
JP2014211665A 2013-10-16 2014-10-16 Free surface type roll reduction tank Pending JP2015077967A (en)

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