WO2012057112A1 - 浮体の動揺低減装置 - Google Patents

浮体の動揺低減装置 Download PDF

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Publication number
WO2012057112A1
WO2012057112A1 PCT/JP2011/074508 JP2011074508W WO2012057112A1 WO 2012057112 A1 WO2012057112 A1 WO 2012057112A1 JP 2011074508 W JP2011074508 W JP 2011074508W WO 2012057112 A1 WO2012057112 A1 WO 2012057112A1
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WO
WIPO (PCT)
Prior art keywords
floating body
plate
reduction device
plate member
pair
Prior art date
Application number
PCT/JP2011/074508
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
義人 安藤
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to US13/807,083 priority Critical patent/US20130098281A1/en
Priority to EP11836245.8A priority patent/EP2634081A1/en
Priority to CN2011800322495A priority patent/CN102971210A/zh
Priority to KR1020127034022A priority patent/KR20130029096A/ko
Priority to RU2012157074/11A priority patent/RU2012157074A/ru
Priority to BR112012033454A priority patent/BR112012033454A2/pt
Publication of WO2012057112A1 publication Critical patent/WO2012057112A1/ja

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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
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • 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
    • 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
    • B63B2035/448—Floating hydrocarbon production vessels, e.g. Floating Production Storage and Offloading vessels [FPSO]
    • 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
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B2039/067—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels

Definitions

  • the present invention relates to an apparatus for reducing the fluctuation of a floating body.
  • a technology for mooring a floating body on water and using it for various purposes has been put into practical use or researched.
  • FLNG Floating LNG
  • FPSO Floating Production Storage & Offloading unit
  • a floating body floats on the ocean, and the natural gas recovered from the submarine gas field is liquefied and LNG (Liquid Natural Gas). Produce and accumulate.
  • LNG Liquid Natural Gas
  • the accumulated LNG is transported to the port by an LNG ship.
  • the floating body is shaken by waves generated on the surface of the sea. Fluctuation of the floating body is undesirable for work on the floating body.
  • a technique for suppressing the fluctuation of the floating body is required.
  • Patent Document 1 Japanese Patent Laid-Open No. 2004-161051
  • Japanese Patent Laid-Open No. 2004-161051 Japanese Patent Laid-Open No. 2004-161051
  • the fluctuation reducing device includes a pair of plate-like members attached to both ends in the width direction of the bottom of the floating body.
  • Each of the pair of plate-like members has a plurality of through holes arranged in the longitudinal direction in the longitudinal direction of the floating body.
  • each of the pair of plate-like members of the vibration reduction device are in close contact with the bottom of the floating body.
  • the pair of plate-like members of the vibration reduction device are attached to the floating body by a support member so that a gap is formed between the floating body and the floating body.
  • the sway reduction device includes a control unit that controls the opening areas of the plurality of through holes.
  • each of the pair of plate-like members includes a first plate member and a second plate member fixed to the floating body.
  • the first plate member and the second plate member are overlapped so that the first hole formed in the first plate member and the second hole formed in the second plate member overlap.
  • the control unit slides the first plate material along the second plate material.
  • a floating body includes the above-described vibration reduction device.
  • the present invention provides a technique that can further reduce the fluctuation of the floating body. Furthermore, a technique is provided that makes it possible to effectively reduce the shaking according to the situation of the shaking of the floating body.
  • FIG. 1 is a perspective view of a floating body.
  • FIG. 2 is a front view of the floating body.
  • FIG. 3 is a front view of the floating body.
  • FIG. 4 is a front view of the floating body.
  • FIG. 5 is a front view of the floating body.
  • FIG. 6 is a side view of the floating body.
  • FIG. 7 shows members constituting the sway reduction device.
  • FIG. 8 shows a sway reduction device.
  • FIG. 9 shows a sway reduction device.
  • FIG. 1 and 2 show a floating body in the first embodiment of the present invention.
  • 1 is a perspective view
  • FIG. 2 is a front view seen from the bow side.
  • the floating body 1 is a box whose longitudinal direction is the ship length direction connecting the bow 3 and the stern 2.
  • the longitudinal direction is depicted as the Y axis.
  • it is required to reduce rolling (rolling) which is a rotational motion around the Y axis.
  • the sway reduction device is attached to both ends of the floating body 1 in the width direction, that is, in the X-axis direction perpendicular to the longitudinal direction in the horizontal plane.
  • the sway reduction device includes a pair of elongated plate-like members.
  • the longitudinal direction of each plate 4 is parallel to the front-rear direction (in many cases, the longitudinal direction) of the floating body 1.
  • the long side of the plate 4 is attached in contact with the bottom of the floating body 1.
  • the plate 4 is attached so as to protrude downward from the bottom of the floating body 1 in the vertical direction.
  • a large number of holes (through holes) 5 are formed side by side in the longitudinal direction of the plate 4.
  • the Z axis is perpendicular to the X axis and the Y axis.
  • Such a floating body is used floating on the water.
  • the floating body is shaken by the influence of the wave incident on the floating body 1. Rolling may occur as one of the main fluctuations.
  • the plate 4 is periodically shaken in the roll direction with respect to water.
  • water enters and exits the holes 5 of the plate 4 attached to the ship bottom.
  • a vortex is generated downstream of the water flow in the hole 5 and the wave energy is attenuated.
  • the rolling of the floating body is suppressed.
  • the floating body can be more effectively suppressed.
  • FIG. 3 is a front view showing a first modification of the first embodiment.
  • a plate 4-1 having a hole 5-1 is used as in FIGS. 1 and 2, but the direction is different.
  • the plate 4-1 is attached to both side ends of the bottom surface of the floating body 1 so that its main surface is horizontal. Such a configuration can also suppress fluctuations. Even if the plate is attached so as to have an oblique angle intermediate between FIGS. 1 and 2 and FIG. 3, there is an effect.
  • FIG. 4 is a front view showing a second modification of the first embodiment.
  • the plate 4-2 includes two elongated plate-like members, a first portion 4-2-1 and a second portion 4-2-2.
  • the first portion 4-2-1 protrudes vertically downward from the bottom of the floating body 1.
  • the second portion 4-2-2 protrudes outward from the floating body 1 from the lower end of the first portion 4-2-1 with the main surface as a horizontal plane.
  • the holes 5-2 are formed in the first part 4-2-1 and the second part 4-2-2 so as to be aligned in the longitudinal direction.
  • FIG. 5 is a front view showing a third modification of the first embodiment.
  • the plate 4-3 is composed of two elongated plate-like members, a first portion 4-3-1 and a second portion 4-3-2.
  • the first portion 4-3-1 protrudes outward from the bottom of the floating body 1 with the main surface as a horizontal plane.
  • the second part 4-3-2 protrudes vertically downward from the outer end of the first part 4-3-1.
  • the holes 5-3 are formed in the first portion 4-3-1 and the second portion 4-3-2 so as to be aligned in the longitudinal direction. Also by these modified examples, the floating body 1 can be prevented from shaking.
  • FIG. 6 shows a floating body according to the second embodiment of the present invention.
  • the long side of the plate 4 is in close contact with the bottom surface of the floating body 1 without a gap
  • the long side 4a of the plate 4 and the bottom surface 1a of the floating body 1 are between.
  • a gap 6 is provided.
  • the plate 4 is attached to the floating body 1 via a support member 7. With such a configuration, water passes not only through the hole 5 but also through the gap 6. By creating a vortex on the downstream side of the water that has passed through the gap 6, wave energy is attenuated and rolling of the floating body is suppressed.
  • the same modification examples as in FIGS. 3 to 5 can be adopted with respect to the shape of the plate 4.
  • the size of the holes and gaps that efficiently attenuate the wave energy varies depending on the wavelength of the incident wave.
  • the first embodiment or the second embodiment is selected so as to suit the size of the hole / gap.
  • the plate 4 since the plate 4 can be directly attached to the bottom surface of the floating body 1, it is easy to obtain high strength with a small number of members. In particular, the plate 4 is required to have a high strength because of a large wave resistance.
  • FIG. 7 and 8 are side views showing the sway reduction device according to the third embodiment of the present invention.
  • a mechanism for variably controlling the opening area is added to the holes 5, 5-1, 5-2, 5-3 in the first embodiment or the second embodiment.
  • FIG. 7 and FIG. 8 show an example of a configuration that enables the control.
  • a first plate member 8-1 and a second plate member 8-2 which are a pair of plates having the same shape, are prepared.
  • FIG. 7 shows the first plate member 8-1 and the second plate member 8-2 before assembling the vibration reduction device.
  • a plurality of holes 9-1 arranged in the longitudinal direction are formed in the first plate member 8-1.
  • a plurality of holes 9-2 arranged in the longitudinal direction are formed in the second plate member 8-2.
  • the pitch of the holes 9-1 and the pitch of the holes 9-2 are the same.
  • the first plate member 8-1 and the second plate member 8-2 are attached to each other so that their planar shapes overlap.
  • the first plate member 8-1 and the second plate member 8-2 are slidable in the longitudinal direction.
  • the relative displacement L1 in the longitudinal direction between the first plate member 8-1 and the second plate member 8-2 can be controlled by a control unit (not shown).
  • the control unit can control the displacement L1 to a set value by a drive mechanism such as an actuator, and can fix the displacement L1 at the set value.
  • a hole 10 is formed in a portion where the hole 9-1 and the hole 9-2 overlap.
  • the hole 10 corresponds to the hole 4 in the first embodiment and the second embodiment.
  • the displacement L1 the size of the hole 10 can be changed.
  • Such a sway reduction device is attached to both side ends of the bottom of the floating body 1 in the width direction, for example, like a plate 4 shown in FIGS.
  • one of the pair of plate members for example, the second plate member 8-2 is fixed to the floating body 1.
  • the operator controls the displacement L1 by sliding the first plate member 8-1 along the second plate member 8-2 remotely from the top of the floating body 1 or the like according to the state of the waves.
  • the hole 10 can be made to have a size suitable for reducing shaking according to the situation such as the swing period of the floating body.
  • FIG. 9 shows another example for controlling the size of the hole. Similar to FIGS. 7 and 8, a first plate member 11-1 and a second plate member 11-2 having a plurality of through holes arranged in the longitudinal direction are prepared. The first plate member 11-1 and the second plate member 11-2 are overlapped and attached so as to be slidable in the vertical direction when attached to each other. The size of the hole 12 can be adjusted by controlling the relative displacement L2 in the vertical direction.
PCT/JP2011/074508 2010-10-29 2011-10-25 浮体の動揺低減装置 WO2012057112A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US13/807,083 US20130098281A1 (en) 2010-10-29 2011-10-25 Rolling reduction apparatus of floating structure
EP11836245.8A EP2634081A1 (en) 2010-10-29 2011-10-25 Rocking-reduction device for floating body
CN2011800322495A CN102971210A (zh) 2010-10-29 2011-10-25 浮体的摇动降低装置
KR1020127034022A KR20130029096A (ko) 2010-10-29 2011-10-25 부체의 동요 저감 장치
RU2012157074/11A RU2012157074A (ru) 2010-10-29 2011-10-25 Устройство уменьшения бортовой качки плавающего объекта
BR112012033454A BR112012033454A2 (pt) 2010-10-29 2011-10-25 aparelho de redução de oscilação, e, estrutura flutuante

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-244092 2010-10-29
JP2010244092A JP2012096601A (ja) 2010-10-29 2010-10-29 浮体の動揺低減装置

Publications (1)

Publication Number Publication Date
WO2012057112A1 true WO2012057112A1 (ja) 2012-05-03

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PCT/JP2011/074508 WO2012057112A1 (ja) 2010-10-29 2011-10-25 浮体の動揺低減装置

Country Status (8)

Country Link
US (1) US20130098281A1 (ko)
EP (1) EP2634081A1 (ko)
JP (1) JP2012096601A (ko)
KR (1) KR20130029096A (ko)
CN (1) CN102971210A (ko)
BR (1) BR112012033454A2 (ko)
RU (1) RU2012157074A (ko)
WO (1) WO2012057112A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015099093A1 (ja) * 2013-12-27 2015-07-02 三菱重工業株式会社 動揺低減装置及びこれを備えた浮体

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Publication number Priority date Publication date Assignee Title
US9238501B1 (en) * 2013-12-17 2016-01-19 The United States Of America As Represented By The Secretary Of The Navy Bilge keel with porous leading edge
KR101690999B1 (ko) * 2014-11-11 2016-12-29 삼성중공업 주식회사 횡동요감소장치
JP6415314B2 (ja) * 2014-12-26 2018-10-31 三菱重工業株式会社 動揺低減装置及びこれを備えた浮体
JP6527346B2 (ja) * 2015-02-13 2019-06-05 三菱重工業株式会社 動揺低減装置及びこれを備えた浮体
CN105109615B (zh) * 2015-08-31 2017-10-27 许庆松 防倾覆双体船
FR3088893A1 (fr) * 2018-11-23 2020-05-29 Safier Ingenierie Jupe pour structure flottante
CN111391981A (zh) * 2020-03-18 2020-07-10 刘江平 浮垫
CN112224361A (zh) * 2020-10-22 2021-01-15 中国人民解放军海军航空大学 海上救生漂浮担架

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JPH03204391A (ja) * 1989-12-29 1991-09-05 Taiyo Gijutsu Kaihatsu Kk ポンツーン
JPH0471988A (ja) * 1990-07-11 1992-03-06 Taiyo Gijutsu Kaihatsu Kk ポンツーン
JP2002037184A (ja) * 2000-05-16 2002-02-06 Mitsubishi Heavy Ind Ltd 浮体の動揺低減装置およびこれを備えた浮体
JP2004016105A (ja) 2002-06-17 2004-01-22 Toa:Kk 精白米の加工方法
JP2004161051A (ja) 2002-11-11 2004-06-10 Mitsubishi Heavy Ind Ltd 浮体の動揺低減装置及びこれを備えた浮体

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03204391A (ja) * 1989-12-29 1991-09-05 Taiyo Gijutsu Kaihatsu Kk ポンツーン
JPH0471988A (ja) * 1990-07-11 1992-03-06 Taiyo Gijutsu Kaihatsu Kk ポンツーン
JP2002037184A (ja) * 2000-05-16 2002-02-06 Mitsubishi Heavy Ind Ltd 浮体の動揺低減装置およびこれを備えた浮体
JP2004016105A (ja) 2002-06-17 2004-01-22 Toa:Kk 精白米の加工方法
JP2004161051A (ja) 2002-11-11 2004-06-10 Mitsubishi Heavy Ind Ltd 浮体の動揺低減装置及びこれを備えた浮体

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015099093A1 (ja) * 2013-12-27 2015-07-02 三菱重工業株式会社 動揺低減装置及びこれを備えた浮体
JPWO2015099093A1 (ja) * 2013-12-27 2017-03-23 三菱重工業株式会社 動揺低減装置及びこれを備えた浮体

Also Published As

Publication number Publication date
EP2634081A1 (en) 2013-09-04
KR20130029096A (ko) 2013-03-21
JP2012096601A (ja) 2012-05-24
RU2012157074A (ru) 2014-06-27
CN102971210A (zh) 2013-03-13
BR112012033454A2 (pt) 2016-11-22
US20130098281A1 (en) 2013-04-25

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