WO2014155843A1 - 低温液体タンク - Google Patents
低温液体タンク Download PDFInfo
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- WO2014155843A1 WO2014155843A1 PCT/JP2013/082743 JP2013082743W WO2014155843A1 WO 2014155843 A1 WO2014155843 A1 WO 2014155843A1 JP 2013082743 W JP2013082743 W JP 2013082743W WO 2014155843 A1 WO2014155843 A1 WO 2014155843A1
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- Prior art keywords
- support portion
- liquid tank
- height
- inner support
- cryogenic liquid
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- 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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
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- 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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/022—Land-based bulk storage containers
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- 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
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
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- 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
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
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- 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
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
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- 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)
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0329—Foam
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
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- 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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0646—Aluminium
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
- F17C2260/011—Improving strength
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- 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
- F17C2270/0134—Applications for fluid transport or storage placed above the ground
- F17C2270/0136—Terminals
Definitions
- the present invention relates to a cryogenic liquid tank.
- This application claims priority based on Japanese Patent Application No. 2013-071115 filed in Japan on March 29, 2013, the contents of which are incorporated herein by reference.
- LNG (Liquefied Natural Gas) tanks and LPG (Liquefied Petroleum Gas) tanks and other tanks that store cryogenic liquids include a reservoir for storing cryogenic liquids and a support that supports the reservoir.
- the support portion includes a heat insulating material.
- a heat insulating material is included in the support portion that supports the storage tank, and therefore, a water foam or cyclopentane foam heat insulating material is used as the heat insulating material. In some cases, similar problems arise.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to prevent a large load from being applied to the bottom during use in a low-temperature liquefaction tank.
- the present invention adopts the following configuration as means for solving the above-described problems.
- a first aspect according to the present invention is a cryogenic liquid tank comprising a storage tank having a bottom part formed by joining a plurality of bottom plates, and a support part that supports the bottom part, wherein the support part is a part of the storage tank.
- the initial height of the upper surface of the inner support portion is set higher than the initial height of the upper surface of the outer support portion.
- the inner support portion has a height setting plate that defines an initial height of the upper surface of the inner support portion.
- a fourth aspect according to the present invention is the heat resistant board according to the third aspect, wherein the height setting plate is disposed above the heat insulating material.
- a corner portion of the outer support portion on the inner support portion side is chamfered.
- the heat insulating material is a hard plastic foam.
- the initial height of the upper surface of the inner support portion forms the bottom of the storage tank by the difference between the upper surface height of the inner support portion and the upper surface height of the outer support portion during the lifetime of the cryogenic liquid tank.
- the maximum bending stress acting on the bottom plate is set so as not to exceed the allowable bending stress of the bottom plate. Therefore, according to the present invention, during the lifetime of the cryogenic liquid tank, the difference between the height of the upper surface of the inner support portion and the height of the upper surface of the outer support portion is large enough to affect the bottom plate. Don't be. Therefore, according to the present invention, in the low-temperature liquefaction tank, it is possible to prevent a large load from being applied to the bottom during use.
- FIG. 2B is an enlarged view of the region shown in FIG. 2A after the useful life has elapsed. It is an enlarged view in the modification of an LNG tank.
- FIG. 3B is an enlarged view of the region shown in FIG. 3A after the useful life has elapsed.
- cryogenic liquid tank according to the present invention will be described with reference to the drawings.
- the scale of each member is appropriately changed in order to make each member a recognizable size.
- an LNG tank will be described as a low temperature liquid tank.
- FIG. 1 is a cross-sectional view schematically showing a schematic configuration of the LNG tank 1 of the present embodiment.
- the LNG tank 1 of the present embodiment is a ground-type metal double shell tank, and includes a base plate 2, an outer tub 3, a bottom cooling mechanism 4 (supporting portion), and an inner tub 5. (Storage tank), a blanket 6 and a side cold insulator 7 are provided.
- the base plate 2 is a disk-shaped member made of concrete that supports the outer tub 3, the bottom refrigeration mechanism 4, the inner tub 5, the blanket 6, and the side refrigeration material 7.
- the outer tub 3 is a cylindrical container made of carbon steel, and is erected on the base plate 2 so as to surround the bottom refrigeration mechanism 4, the inner tub 5, the blanket 6, and the side refrigeration material 7.
- the bottom cooling mechanism 4 is disposed below the inner tank 5 so as to support the inner tank 5 inside the outer tank 3.
- the bottom cooling mechanism 4 is a member corresponding to the support portion in the present invention, and details thereof will be described later.
- the inner tank 5 is a cylindrical container in which LNG is stored, and is erected on the bottom cooling mechanism 4.
- the inner tank 5 includes a bottom 5a and side walls 5b made of nickel steel, an annular plate 5c (see FIGS. 2A and 2B) connecting the bottom 5a and the side walls 5b, and a ceiling made of aluminum steel and supported by being suspended. 5d.
- the bottom 5a of the inner tank 5 is formed by joining a plurality of bottom plates 5a1 (see FIGS. 2A and 2B) made of nickel steel.
- the annular plate 5c is a part of the inner tub 5 as described above, but functions as a part of the support portion of the present invention in the present embodiment.
- the blanket 6 is disposed so as to cover the side wall 5b of the inner tub 5 from the outside, and has a cold keeping function and absorbs thermal deformation of the inner tub 5.
- the side cold insulator 7 is filled between the blanket 6 and the outer tub 3 and is made of, for example, pearlite.
- the bottom cooling mechanism 4 includes an outer peripheral portion 4a disposed below the side wall 5b of the inner tub 5, and a central portion 4b disposed inside the outer peripheral portion 4a. .
- the outer peripheral portion 4 a supports the annular plate 5 c of the inner tub 5, is a portion made of concrete, and is provided annularly along the side wall 5 b of the inner tub 5.
- the central portion 4b is formed by a heat insulating layer 4b1 installed on the base plate 2 and a plurality of calcium silicate plates 4b2 provided on the heat insulating layer 4b1.
- the heat insulating layer 4b1 is a member for preventing heat input from the ground to the inner tub 5, and in this embodiment, is made of a hard plastic foam that causes creep due to a load from above, unlike concrete or bubble glass. More specifically, the heat insulating layer 4b1 is formed of a rigid urethane foam, a rigid polyisocyanurate foam, or a rigid polyvinyl chloride foam.
- the calcium silicate plate 4b2 is a heat-resistant board, and its upper surface 4b3 is a support surface of the bottom plate 5a1 that forms the bottom 5a of the inner tank 5. These calcium silicate plates 4b2 prevent thermal influence on the lower heat insulating layer 4b1 when the bottom plates 5a1 are welded together during construction of the LNG tank 1.
- the bottom 5a of the inner tank 5 (ie, the bottom plate 5a1) is in contact with the upper surface 5c1 of the annular plate 5c at the edge of the inner tank 5, and is silicic acid at the center of the inner tank 5. It abuts on the upper surface 4b3 of the calcium plate 4b2. That is, the bottom part 5a of the inner tub 5 is supported by the bottom part cooling mechanism 4 and the annular plate 5c.
- the structure including the bottom cooling mechanism 4 and the annular plate 5c is referred to as a support portion 10.
- the outer peripheral part of this support part 10 consists of the outer peripheral part 4a and the annular plate 5c of the bottom part cooling mechanism 4, and supports the edge part of the inner tank 5 including the side wall 5b of the inner tank 5.
- an outer peripheral portion of the support portion 10 is referred to as an outer support portion 11.
- the central portion of the support portion 10 is composed of the central portion 4 b of the bottom cooler mechanism 4.
- such a central portion of the support portion 10 is referred to as an inner support portion 12.
- the LNG tank 1 of the present embodiment includes an outer support portion 11 that supports the edge of the inner tub 5 including the side wall 5b of the inner tub 5, and a heat insulating layer 4b1 made of a heat insulating material that creeps when a load is applied. And an inner support portion 12 disposed inside the outer support portion 11.
- FIG. 2A shows a state immediately after completion of construction of the LNG tank 1 of the present embodiment.
- the initial height of the upper surface 12a of the inner support portion 12 that is, the calcium silicate plate 4b2
- the upper surface 11a of the outer support portion 11 the upper surface of the annular plate 5c. It is set higher than the height of 5c1).
- the bottom cooling mechanism 4 since the bottom cooling mechanism 4 includes a heat insulating layer 4b1 made of hard plastic foam, the heat insulating layer 4b1 receives a load from above due to the weight of LNG stored in the inner tank 5. Cause creep.
- the heat insulation layer 4b1 is gradually compressed by long-term use, and the upper surface 12a of the inner side support part 12 sinks.
- the upper surface 12a of the inner support portion 12 is positioned below the upper surface 11a of the outer support portion 11 as shown in FIG. 2B.
- the degree to which the upper surface 12a of the inner support portion 12 sinks is obtained by experiment or simulation. Based on the value, the initial height of the upper surface 12a of the inner support portion 12 is set so that the bottom plate 5a1 is not greatly affected. Specifically, the difference between the height of the upper surface 12 a of the inner support portion 12 and the height of the upper surface 11 a of the outer support portion 11 is obtained from the amount of sedimentation of the upper surface 12 a of the inner support portion 12.
- the maximum bending stress acting on the bottom plate 5a1 is obtained, and the allowable bending stress of the bottom plate 5a1 (there is no need to repair the bottom plate 5a1 during the service life of the LNG tank 1). Stress).
- the initial height of the upper surface 12a is set so that the maximum bending stress does not exceed the allowable bending stress of the bottom plate 5a1.
- the initial height is naturally determined by the maximum bending stress acting on the bottom plate 5a1 due to the difference between the height of the upper surface 12a of the inner support portion 12 and the height of the upper surface 11a of the outer support portion 11 in the initial stage. It is set not to exceed the allowable bending stress of 5a1.
- the initial height of the upper surface 12a of the inner support portion 12 is equal to the height of the upper surface 12a of the inner support portion 12 and the outer support portion 11 during the lifetime of the LNG tank 1.
- the maximum bending stress acting on the bottom plate 5a1 is set so as not to exceed the allowable bending stress of the bottom plate 5a1 due to the difference from the height of the upper surface 11a. Therefore, according to the LNG tank 1 of the present embodiment, the difference between the height of the upper surface 12a of the inner support portion 12 and the height of the upper surface 11a of the outer support portion 11 during the lifetime of the LNG tank 1 is the bottom plate 5a1. It will not be so large as to affect Therefore, according to the LNG tank 1 of the present embodiment, it is possible to prevent a large load from being applied to the bottom portion 5a of the inner tank 5 during use of the LNG tank 1.
- the initial height of the upper surface 12a of the inner support portion 12 is, for example, a change in the thickness of the constituent elements of the inner support portion 12 (that is, the heat insulating layer 4b1 and the calcium silicate plate 4b2 in the present embodiment) or the basic version. 2 can be adjusted by raising the bottom. Further, the height of the upper surface 12 a of the inner support portion 12 may be adjusted by newly installing a height setting plate for defining the height on the inner support portion 12. However, since it is easy to adjust the thickness of the calcium silicate plate 4b2, the calcium silicate plate 4b2 is preferably used as the height setting plate.
- FIG. 3A it is possible to adopt a configuration in which the corner portion 11b of the outer support portion 11 on the inner support portion 12 side is chamfered.
- FIG. 3B even when the upper surface 12a of the inner support portion 12 sinks and becomes lower than the upper surface 11a of the outer support portion 11, the outer support portion 11 corners can be prevented from hitting the bottom plate 5a1, and high stress can be prevented from acting locally on the bottom plate 5a1.
- the outer side support part 11 consists of the outer peripheral part 4a and the annular plate 5c of the bottom part cooling mechanism 4, and supports the bottom plate 5a1 with the upper surface of the annular plate 5c, and the annular plate 5c, bottom plate 5a1, and The structure which welded by overlapping is adopted.
- the present invention is not limited to this.
- the bottom plate 5a1 is directly supported on the upper surface of the outer peripheral portion 4a of the bottom cooling mechanism 4, and the bottom plate 5a1 and the annular plate 5c are butted against each other and welded. It can also be adopted.
- the bottom plate 5 a 1 is supported on the upper surface of the outer peripheral portion 4 a of the bottom cold-retaining mechanism 4. Therefore, an outer side support part is comprised only by the outer peripheral part 4a of the bottom part cold-retaining mechanism 4, and the upper surface of the outer peripheral part 4a becomes an upper surface of an outer side support part.
- the structure which the inner side support part 12 consists of the heat insulation layer 4b1 which consists of hard urethane foam, and the calcium silicate board 4b2 is employ
- the present invention is not limited to this, and the inner support portion 12 may have a different structure.
- the structure which includes the 2nd heat insulation layer which consists of foam glass etc. in the inner side support part 12 is also employable.
- the structure of the inner side support part 12 changes, the component which has a surface which supports the bottom plate 5a1 is also changed.
- the structure which the heat insulation layer 4b1 consists of a rigid urethane foam demonstrated.
- rigid urethane foam any foamed plastic can be used as a heat insulating layer.
- the cryogenic liquid tank of the present invention can also be applied to LPG tanks and other cryogenic liquid tanks.
- the initial height of the upper surface of the inner support portion is not necessarily higher than the initial height of the upper surface of the outer support portion.
- the initial height of the upper surface of the inner support portion may be the same as the initial height of the upper surface of the outer support portion.
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Abstract
Description
本願は、2013年3月29日に日本に出願された特願2013-071115号に基づき優先権を主張し、その内容をここに援用する。
なお、以下の図面においては、各部材を認識可能な大きさとするために、各部材の縮尺を適宜変更している。また、本実施形態においては、低温液体タンクとしてLNGタンクを挙げて説明する。
このような場合には、ボトムプレート5a1が底部保冷機構4の外周部4aの上面に支持される。そのため、外側支持部が底部保冷機構4の外周部4aのみで構成され、外周部4aの上面が外側支持部の上面となる。
2 基礎版、
3 外槽、
4 底部保冷機構、
4a 外周部、
4b 中央部、
4b1 断熱層(断熱材)、
4b2 ケイ酸カルシウム板(高さ設定プレート)、
4b3 上面、
5 内槽(貯槽)、
5a 底部、
5a1 ボトムプレート、
5b 側壁、
5c アニュラプレート、
5c1 上面、
5d 天井、
6 ブランケット、
7 側部保冷材、
10 支持部、
11 外側支持部、
11a 上面、
11b 角部、
12 内側支持部、
12a 上面
Claims (9)
- 複数のボトムプレートが接合されてなる底部を有する貯槽と、前記底部を支持する支持部とを備える低温液体タンクであって、
前記支持部は、
前記貯槽の側壁を含む前記貯槽の縁部を支持する外側支持部と、
荷重が付与されることによりクリープする断熱材を含むと共に前記外側支持部の内側に配置される内側支持部とを備え、
前記内側支持部の上面の初期高さは、低温液体タンクの耐用期間中において、内側支持部の上面の高さと外側支持部の上面の高さとの差によって前記ボトムプレートに作用する最大曲げ応力が前記ボトムプレートの許容曲げ応力を超えないように設定されている
低温液体タンク。 - 前記内側支持部の上面の初期高さは、前記外側支持部の上面の初期高さよりも高く設定されている請求項1に記載の低温液体タンク。
- 前記内側支持部は、前記内側支持部の上面の初期高さを規定する高さ設定プレートを有する請求項1に記載の低温液体タンク。
- 前記内側支持部は、前記内側支持部の上面の初期高さを規定する高さ設定プレートを有する請求項2に記載の低温液体タンク。
- 前記高さ設定プレートは、前記断熱材の上方に配置される耐熱ボードである請求項3に記載の低温液体タンク。
- 前記高さ設定プレートは、前記断熱材の上方に配置される耐熱ボードである請求項4に記載の低温液体タンク。
- 前記外側支持部の、前記内側支持部側の角部が面取りされている請求項1~6のいずれかに記載の低温液体タンク。
- 前記断熱材は、硬質プラスチックフォームである請求項1~6のいずれかに記載の低温液体タンク。
- 前記断熱材は、硬質プラスチックフォームである請求項7に記載の低温液体タンク。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2903385A CA2903385C (en) | 2013-03-29 | 2013-12-05 | Low temperature liquid tank |
MYPI2015703214A MY185807A (en) | 2013-03-29 | 2013-12-05 | Low temperature liquid tank |
KR1020157022941A KR101777363B1 (ko) | 2013-03-29 | 2013-12-05 | 저온 액체 탱크 |
CN201380074812.4A CN105074319B (zh) | 2013-03-29 | 2013-12-05 | 低温液体箱 |
PH12015501911A PH12015501911A1 (en) | 2013-03-29 | 2015-08-28 | Low temperature liquid tank |
US14/850,424 US10480714B2 (en) | 2013-03-29 | 2015-09-10 | Low temperature liquid tank |
Applications Claiming Priority (2)
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JP2013071115A JP6155758B2 (ja) | 2013-03-29 | 2013-03-29 | 低温液体タンク |
JP2013-071115 | 2013-03-29 |
Related Child Applications (1)
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US14/850,424 Continuation US10480714B2 (en) | 2013-03-29 | 2015-09-10 | Low temperature liquid tank |
Publications (1)
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WO2014155843A1 true WO2014155843A1 (ja) | 2014-10-02 |
Family
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PCT/JP2013/082743 WO2014155843A1 (ja) | 2013-03-29 | 2013-12-05 | 低温液体タンク |
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US (1) | US10480714B2 (ja) |
JP (1) | JP6155758B2 (ja) |
KR (1) | KR101777363B1 (ja) |
CN (1) | CN105074319B (ja) |
CA (1) | CA2903385C (ja) |
MY (1) | MY185807A (ja) |
PH (1) | PH12015501911A1 (ja) |
TW (1) | TWI599738B (ja) |
WO (1) | WO2014155843A1 (ja) |
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WO2017146086A1 (ja) * | 2016-02-24 | 2017-08-31 | 株式会社Ihi | 低温液体タンク |
EP2725282B1 (en) * | 2011-06-24 | 2019-03-06 | Japan Marine United Corporation | Liquefied gas tank |
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JP6036605B2 (ja) | 2013-08-23 | 2016-11-30 | 株式会社Ihi | 地上式低温タンク |
EP4306843A1 (en) * | 2021-03-08 | 2024-01-17 | Kawasaki Jukogyo Kabushiki Kaisha | Triple-wall tank |
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Also Published As
Publication number | Publication date |
---|---|
JP2014194256A (ja) | 2014-10-09 |
PH12015501911A1 (en) | 2016-01-04 |
KR101777363B1 (ko) | 2017-09-11 |
CA2903385C (en) | 2018-03-06 |
KR20150110740A (ko) | 2015-10-02 |
CN105074319A (zh) | 2015-11-18 |
JP6155758B2 (ja) | 2017-07-05 |
CN105074319B (zh) | 2018-05-01 |
TWI599738B (zh) | 2017-09-21 |
US20150377415A1 (en) | 2015-12-31 |
CA2903385A1 (en) | 2014-10-02 |
TW201437536A (zh) | 2014-10-01 |
US10480714B2 (en) | 2019-11-19 |
MY185807A (en) | 2021-06-09 |
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