WO2017166786A1 - 一种用于液货舱的稳液装置 - Google Patents

一种用于液货舱的稳液装置 Download PDF

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Publication number
WO2017166786A1
WO2017166786A1 PCT/CN2016/102213 CN2016102213W WO2017166786A1 WO 2017166786 A1 WO2017166786 A1 WO 2017166786A1 CN 2016102213 W CN2016102213 W CN 2016102213W WO 2017166786 A1 WO2017166786 A1 WO 2017166786A1
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WIPO (PCT)
Prior art keywords
liquid
cargo tank
sloshing
cargo
floating body
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PCT/CN2016/102213
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English (en)
French (fr)
Inventor
柴松
董晓程
茅鑫花
安文新
魏华清
沈建荣
陈其中
Original Assignee
惠生（南通）重工有限公司
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Application filed by 惠生（南通）重工有限公司 filed Critical 惠生（南通）重工有限公司
Publication of WO2017166786A1 publication Critical patent/WO2017166786A1/zh
Priority to US16/148,389 priority Critical patent/US10815052B2/en

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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 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/52—Anti-slosh devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • 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
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • 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
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/016—Preventing slosh
    • 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

Definitions

  • the invention relates to a liquid stabilization device, in particular to a liquid stabilization device for use in a cargo tank.
  • the device is installed in the cargo hold of a ship that transports or holds liquid cargo to reduce the impact of sloshing of liquid cargo such as liquefied natural gas or liquefied petroleum gas.
  • Liquefied natural gas is obtained by cooling natural gas to a very low temperature (about -163 ° C). Since the volume of liquefied gas is only about 1/600 of the volume of gaseous natural gas, it is very suitable for long-distance maritime transportation.
  • a liquefied gas carrier designed to transport liquefied gas across the sea and transport the liquefied gas to the desired location on land or designed to transport liquefied gas across the sea to the desired location on land and regasify the liquefied gas for onshore use
  • the liquefied gas floating regasification storage devices are each equipped with a storage tank or a cargo tank capable of withstanding the low temperature state of the liquefied gas.
  • Sloshing refers to the movement of liquid in a cargo tank caused by the movement of a ship or floating structure that occurs in various maritime conditions. If the interior of the cargo tank is only partially loaded with liquid, the sloshing caused by the movement of the liquid may severely impact the side walls and ceiling of the cargo hold, which is called a sloshing impact.
  • FIG. 1 is a cutaway perspective view depicting a conventional cargo tank designed to reduce sloshing impact.
  • a technique of forming an upper beveled surface and a lower beveled surface inclined at about 45° is employed at the upper and lower sides of the lateral side walls of the cargo hold to reduce sloshing.
  • the formation of a beveled surface as described above at the cargo tank can reduce the sloshing load to some extent by changing the shape of the cargo hold.
  • the technique of forming a beveled surface at the cargo tank as shown in FIG. 1 can only reduce the sloshing impact in certain specific loading states, and therefore requires another method to achieve various loading states. Safely withstand the tanks that slosh the impact load.
  • the storage space in the cargo hold becomes small due to the existence of the beveled surface, and the storage capacity of the cargo is also reduced.
  • the inner bulkheads are usually made of special low-temperature resistant materials and processed through complicated processes, so the design of the anti-sway device is as much as possible. Reduce the transformation and processing involved in the bulkhead.
  • the technical problem to be solved by the present invention is to provide a sloshing impact device which can safely withstand the sloshing shock of the cargo tank under various loading conditions, and at the same time, the device can make the cargo tank no longer use conventional
  • the beveled surface effectively reduces the sloshing impact and can load more cargo than the same level of cargo tank.
  • a liquid stabilization device for a cargo tank of the present invention includes a guiding structure, the guiding structure is provided with a positioning floating body, and the positioning floating body is provided with an anti-sloshing member, and the anti-sloshing member Set up A non-continuous baffle with a fixed angle.
  • the positioning floating body can move up and down on the guiding structure.
  • the anti-sloshing member is disposed on two sides of the positioning floating body, and the anti-sloshing member is disposed perpendicular to the guiding structure.
  • the discontinuous baffle and the anti-sloshing member are disposed at the same horizontal plane.
  • the positioning floating body is made of metal or glass fiber.
  • the guiding structure is a rectangular cylinder.
  • the non-continuous baffles are arranged at the same pitch.
  • the fixed angle is 25 to 65 degrees.
  • the liquid stabilization device of the invention has two advantages over the prior device. One is that the cargo tank is no longer inclined to increase the loading capacity of the cargo tank, and the second is to enable the cargo tank to be loaded under various loading conditions. Avoid liquid cargo impact.
  • Figure 1 is a cross-sectional view of a conventional cargo tank, where 1 is a cargo hold, 2 is a top wall, 3 is an upper beveled face, 4 is a side wall, and 5 is a lower beveled face;
  • Figure 2 is a front cross-sectional view showing the liquid holding device of the present invention installed in a cargo tank;
  • Figure 3 is a side cross-sectional view showing the liquid holding device of the present invention installed in a cargo tank;
  • Figure 4 is a top cross-sectional view showing the liquid holding device of the present invention installed in a cargo tank;
  • Figure 5 is a partially enlarged perspective view of the liquid holding device of the present invention.
  • the liquid holding device according to the present invention is suitable for use in any tank containing liquefied natural gas.
  • any tank containing liquefied natural gas For ease of description, the case where the liquid holding device is applied to a conventional film type cargo tank will be described.
  • the liquid holding device for a cargo tank is provided with a positioning floating body 10 and a guiding structure 11 which has buoyancy so that the member can move in correspondence with the movement of the liquid cargo caused by the movement of the ship. , creating resistance against the movement of liquid cargo.
  • the guiding structure 11 not only allows the positioning float 10 to float with the liquid, but also limits the rotation of the sloshing member 12, ensuring that it maintains a vertical relationship with the side wall of the cargo hold when the cargo hold is tilted, and suppresses sloshing of the liquid at a more effective angle.
  • the liquid holding device of the cargo tank may include a guiding structure 11 and an anti-sloshing member 12.
  • the guiding structure 11 is mounted and fixed to the front and rear walls of the cargo hold and includes a buoyant positioning floating body 10 that allows the positioning floating body 10 to rise to the surface of the stored liquid while being restrained by the positioning floating body
  • the swaying member 12 is held on the liquid surface by means of the positioning float 10 to suppress sloshing of the liquid cargo.
  • the anti-sloshing member 12 is maintained relatively perpendicular to the side wall of the cargo hold to ensure a more effective relative angle when suppressing liquid sloshing.
  • the guiding structure 11 can be mounted on the front and rear walls of the cargo hold and includes a positioning float 10 for providing buoyancy to retain the anti-sloshing member 12 on the surface of the liquid cargo.
  • the positioning float 10 can be formed from metal or fiberglass having a very low deformation rate at low temperatures, and sufficient buoyancy is generated by locating the proper shape of the float 10. Any material or shape is suitable as long as the positioning float is capable of generating sufficient buoyancy to hold the entire sloshing impact device above the liquid cargo.
  • the anti-sloshing member 12 applied to the embodiment may be provided with a fixed angle non-continuous baffle 121 having a fixed angle and a suitable spacing.
  • the shape of these baffles is not limited to a specific shape such as a rectangular shape and an elliptical shape, and any shape is applicable as long as the baffle can suppress the flow of the liquid cargo during the movement of the liquid cargo.
  • the resistance of the fluid movement can be adjusted by changing the size of the baffle, the thickness of the baffle, and the angle and spacing of the baffle, and can be appropriately set.
  • the anti-sloshing member 12 may be formed of a material having a specific gravity smaller than that of the liquefied gas. In this case, the positioning float 10 in the above example can be reduced, and the anti-sloshing member 12 can be floated on the surface of the liquid cargo in a different manner from the embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

一种用于液货舱的稳液装置，包括引导结构（11），引导结构上设置有定位浮体（10），定位浮体上设置有防晃荡构件（12），防晃荡构件上设置有固定角度的非连续挡板（121）。稳液装置不再使液货舱采用斜削面结构，增大了液货舱装载容量，并且能够使液货舱在各种装载状态下避免液体货物冲击。

Description

一种用于液货舱的稳液装置 技术领域
本发明涉及一种稳液装置，尤其涉及一种用于液货舱中的稳液装置。该装置安装在运输或盛装液体货物的船舶的货舱中，用于减小诸如液化天然气或液化石油气等液体货物的晃荡所产生的冲击力。
背景技术
通过将天然气冷却到极低的温度(大约-163℃)来获得液化天然气，由于液化气的体积仅为气态天然气体积的约1/600，因此十分适合于长距离海上运输。
设计成跨海运输液化气并且将液化气传送到陆上所需位置的液化气运输船或者设计成将液化气跨海运输到陆上所需位置并且将液化气再气化以供陆上使用的液化气浮式再气化存储装置均装配有储罐或液货舱，该液货舱能够耐受液化气的低温状态。
如果装配有液货舱的船舶在航行或停泊时发生运动，那么液货舱中的液体也会发生运动，从而导致对液货舱的顶壁和侧壁产生晃荡冲击。由于晃荡冲击，可能会对该货舱的结构及绝热材料造成损坏。
晃荡是指由在各种海运状况中发生的船舶或浮式结构的运动而引起的液货舱中液体的运动。如果液货舱的内部仅部分装载有液体，那么由液体的运动引起的晃荡可能严重地冲击货舱的侧壁和顶棚，这被称为晃荡冲击。
图1是描述设计成减小晃荡冲击的常规液货舱的剖切立体图。
参考图1，在传统的设计中通过采用货舱的横向侧壁的上侧和下侧处形成以大约45°倾斜的上斜削面和下斜削面的技术，以减小晃荡。在液货舱处如上形成斜削面通过改变货舱的形状而可在一定程度上减小晃荡载荷。
然而，如图1所示在液货舱处形成斜削面的技术仅在某些特定装载状态下能够起到减小晃荡冲击的作用，因此需要一种其它的方法来实现各种装载状态下均能够安全地耐受晃荡冲击负载的液货舱。
此外，在如上形成斜削面以减少晃荡冲击的情况下，货舱中的储存空间由于斜削面的存在而变小，其货物的存储能力也随之减小。
特别地，对于装载液化天然气或液化石油气的液货舱，为满足低温液体的保温需要，其内侧舱壁通常采用特殊的耐低温材料并经过复杂工艺制成，因此防晃装置的设计因尽可能减少涉及舱壁的改造和加工。
发明内容
本发明所要解决的技术问题是提供一种减晃荡冲击装置，该装置可以使液货舱在各种装载状态下都能安全地承受晃荡冲击，同时，该装置可以使液货舱可以不再使用常规的斜削面而有效地减少晃荡冲击，与同一级别的液货舱相比能够装载更多的货物。
为了解决上述技术问题，本发明的一种用于液货舱的稳液装置，包括引导结构，所述引导结构上设置有定位浮体，所述定位浮体上设置有防晃荡构件，所述防晃荡构件上设 置有固定角度的非连续挡板。
上述技术方案的进一步改进方案，所述定位浮体可在引导结构上上下移动。
上述技术方案的进一步改进方案，所述防晃荡构件设置在定位浮体的两侧，防晃荡构件与引导结构垂直设置。
上述技术方案的进一步改进方案，所述非连续挡板与防晃荡构件设置在同一水平面。
上述技术方案的进一步改进方案，所述定位浮体为金属或玻璃纤维材质。
上述技术方案的进一步改进方案，所述引导结构为矩形柱体。
上述技术方案的进一步改进方案，所述非连续挡板之间按照相同的间距排列。
上述技术方案的进一步改进方案，所述固定角度为25至65度。
本发明的稳液装置较现有装置而言具有两方面的优势，一是不再使液货舱采用斜削面结构，增大了液货舱装载容量，二是能够使液货舱在各种装载状态下避免液体货物冲击。
附图说明
图1为常规的液货舱的剖面图，其中1为货舱，2为顶壁，3为上斜削面，4为侧壁，5为下斜削面；
图2为本发明稳液装置安装在液货舱内的主视剖面图；
图3为本发明稳液装置安装在液货舱内的侧视剖面图；
图4为本发明稳液装置安装在液货舱内的俯视剖面图；
图5为本发明稳液装置局部放大立体图。
具体实施方式
在下文中，将参考附图详细地描述本发明的示例性实施方式。
根据本发明的稳液装置适用于盛装液化天然气的任何罐。为了便于描述，将针对稳液装置被应用于常规薄膜式货舱的情况。
根据本发明的用于液货舱的稳液装置设置有定位浮体10和引导结构11定位，定位浮体10具有浮力而使得该构件可在与由船舶的运动引起的液体货物的运动对应地运动的同时，产生阻力对抗液体货物的运动。引导结构11不仅使定位浮体10可随液体浮动，同时还能限制减晃荡构件12的转动，确保其在货舱倾斜时保持与货舱侧壁的垂直关系，以更加有效的角度抑制液体的晃荡。在下文更详细地描述本发明的所述实施方式。
参考图2、图3和图4，液货舱的稳液装置可包括引导结构11和防晃荡构件12。引导结构11被安装固定在货舱的前壁及后壁上，并且包括具有浮力的定位浮体10，所述浮力允许该定位浮体10升高到所储存的液体的表面，而受定位浮体约束的防晃荡构件12借助定位浮体10被保持在液面上，以抑制液体货物的晃荡。同时，受定位浮体10与引导结构11的限制，防晃荡构件12被保持在与货舱侧壁的相对垂直，以保证在抑制液体晃荡时具有更加有效的相对角度。
参考图5，引导结构11可安装在货舱的前壁及后壁上，并且包括：定位浮体10，所述定位浮体用于提供浮力从而将防晃荡构件12保持在液体货物的表面上。
当定位浮体10沿引导结构11上升或下降时，可能频繁地发生定位浮体10的内表面与引导结构11的外表面之间的接触。将定位浮体10的内表面或引导结构11的外表面涂覆聚四氟乙烯会降低由定位浮体10与引导结构11之间的接触产生的摩擦。
在所述的实施方式中，定位浮体10可由在低温情况下变形率极低的金属或玻璃纤维形成，通过定位浮体10的适当形状来产生足够的浮力。只要定位浮体能够产生足够的浮力使整个减晃荡冲击装置保持在液体货物上方，任何材料或形状都是适用的。
参考图5，应用到所述实施方式的防晃荡构件12可设置有固定角度的非连续挡板121，所述挡板具有固定的角度和适当的间距。这些挡板的形状并不局限于诸如矩形和椭圆形等具体形状，并且只要在液体货物运动期间该挡板能够抑制液体货物的流动，任何形状都是适用的。
如果防晃荡构件12形成为具有上述挡板的结构，就可通过改变挡板的尺寸、构成挡板的厚度、以及挡板的角度和间距，调整流体运动的阻力大小，并且可合适地设置防晃荡构件12的晃荡衰减效率及防晃荡构件12的强度。因此，本实施方式可根据货舱的容量、形式以及所储存的货物的种类来更有效地抑制晃荡。
作为另一示例，虽然在附图中未示出，但是防晃荡构件12可由比重比液化气的比重小的材料形成。在该情况下，可缩小上述示例中的定位浮体10，并且能以与在本发明的所述实施方式中不同的方式来实现使防晃荡构件12在液体货物表面上漂浮。

Claims (8)

  1. 一种用于液货舱的稳液装置，其特征在于：包括引导结构，所述引导结构上设置有定位浮体，所述定位浮体上设置有防晃荡构件，所述防晃荡构件上设置有固定角度的非连续挡板。
  2. 如权利要求1所述的一种用于液货舱的稳液装置，其特征在于：所述定位浮体可在引导结构上上下移动。
  3. 如权利要求1或2所述的一种用于液货舱的稳液装置，其特征在于：所述防晃荡构件设置在定位浮体的两侧，防晃荡构件与引导结构垂直设置。
  4. 如权利要求3所述的一种用于液货舱的稳液装置，其特征在于：所述非连续挡板与防晃荡构件设置在同一水平面。
  5. 如权利要求4所述的一种用于液货舱的稳液装置，其特征在于：所述定位浮体为金属或玻璃纤维材质。
  6. 如权利要求5所述的一种用于液货舱的稳液装置，其特征在于：所述引导结构为矩形柱体。
  7. 如权利要求6所述的一种用于液货舱的稳液装置，其特征在于：所述非连续挡板之间按照相同的间距排列。
  8. 如权利要求7所述的一种用于液货舱的稳液装置，其特征在于：所述固定角度为25至65度。
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