CN116670023A - Multi-layer shell tank and ship - Google Patents

Multi-layer shell tank and ship Download PDF

Info

Publication number
CN116670023A
CN116670023A CN202080108209.3A CN202080108209A CN116670023A CN 116670023 A CN116670023 A CN 116670023A CN 202080108209 A CN202080108209 A CN 202080108209A CN 116670023 A CN116670023 A CN 116670023A
Authority
CN
China
Prior art keywords
tank
heat insulating
insulating material
planar heat
layered
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202080108209.3A
Other languages
Chinese (zh)
Inventor
下田太一郎
冨永晴彦
黑田和宏
田中森
岩崎英和
神﨑大辅
樫藤瑞纪
细野隆道
加野大地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Motors Ltd
Original Assignee
Kawasaki Jukogyo KK
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 Kawasaki Jukogyo KK filed Critical Kawasaki Jukogyo KK
Publication of CN116670023A publication Critical patent/CN116670023A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • 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
    • 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
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0329—Foam
    • F17C2203/0333—Polyurethane
    • 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
    • F17C2203/0337—Granular
    • F17C2203/0341—Perlite
    • 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
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • 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
    • F17C2203/0631—Three or more walls
    • 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
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0192—Details of mounting arrangements with external bearing means
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/227—Assembling processes by adhesive means
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/228—Assembling processes by screws, bolts or rivets
    • 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
    • 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
    • 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
    • F17C2260/013—Reducing manufacturing time or effort
    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/031—Dealing with losses due to heat transfer
    • F17C2260/033—Dealing with losses due to heat transfer by enhancing insulation
    • 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
    • F17C2270/0107—Wall panels
    • 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

Abstract

The multilayer shell can has: an inner tank for storing liquefied gas; one or more layers of outer tanks arranged outside the inner tank with a gap therebetween so as to surround the inner tank; and a planar heat insulating material fixed to the outer surface of the inner tank, the inner surface of the outer tank, and 2 or more surfaces out of the outer surfaces of the outer tank so as to cover the surfaces, and having high heat insulating performance on the tank wall without depending on making the space between the inner tank and the outer tank a high vacuum.

Description

Multi-layer shell tank and ship
Technical Field
The present invention relates to a multi-layer tank and a ship equipped with the multi-layer tank.
Background
Conventionally, a multi-layer can is known as a cargo can. The multi-layer tank has a plurality of tanks including an inner tank for storing low-temperature fluid-like cargo such as liquefied gas and an outer tank for covering the inner tank. It is known that a vacuum space is formed in the inter-tank region of the multi-layer case can in order to improve heat insulation. Patent document 1 discloses a double-shell tank mounted on a ship.
The double-shell can disclosed in patent document 1 has: an inner tank for storing liquefied gas; an outer tank surrounding the inner tank and forming a vacuum space with the inner tank; at least one metal sheet attached to the inner tank so that at least a part thereof faces the bottom surface of the inner tank; an adsorption material for gas molecules, which is placed on the metal sheet; and a heat insulating sheet covering the inner tank and the metal sheet. The heat insulating sheet includes alternately stacked radiation shielding films and sheet-like spacers having a small thermal conductivity.
Prior art literature
Patent literature
Patent document 1: international publication WO2019/078048
Disclosure of Invention
Problems to be solved by the invention
In the double-shell tank of patent document 1, the high vacuum between the inner tank and the outer tank prevents radiant heat from entering and natural convection, thereby achieving a high heat insulating effect. However, it takes time to evacuate the space between the tanks having a large volume, which may be one of the main causes of the prolonged time taken for manufacturing and maintenance. In addition, the groove wall needs to have a sufficient thickness in order to have vacuum resistance, which may be one of the main causes of increasing the weight of the can. In addition, since a plurality of reinforcing members need to be added to the can, the structure is complicated, and thus, the manufacturing is difficult.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a multilayer shell tank for storing liquefied gas, which has high heat insulating performance without depending on a high vacuum between an inner tank and an outer tank.
Means for solving the problems
A multilayer can according to an embodiment of the present invention is characterized by comprising: an inner tank for storing liquefied gas; one or more layers of outer grooves disposed outside the inner groove with a gap therebetween so as to surround the inner groove; and a planar heat insulating material fixed to the outer surface of the inner tank, the inner surface of the outer tank, and 2 or more surfaces among the outer surface of the outer tank so as to cover the surfaces, and that blocks heat conduction and heat convection, and that fills a gas between the tanks.
In addition, a ship according to an aspect of the present invention is characterized by comprising: a hull; and the multi-layer shell tank is mounted on the ship body.
According to the multi-layer shell tank and the ship having the above-described structure, the heat conduction and the heat convection are blocked by the two or more heat insulating layers made of the planar heat insulating material, so that the tank wall of the multi-layer shell tank can have sufficiently high heat insulating performance even when the space between the tanks is filled with the gas.
Effects of the invention
According to the present invention, in the multi-layered shell tank for storing liquefied gas, it is possible to have high heat insulating performance without depending on making the space between the inner tank and the outer tank high in vacuum.
Drawings
Fig. 1 is a side view showing the overall structure of a ship on which a multi-layered shell tank according to an embodiment of the present invention is mounted.
Fig. 2 is a cross-sectional view illustrating a structure of a multi-layered tank mounted on a ship.
Fig. 3 is a cross-sectional view of the multi-layered can of example 1.
Fig. 4 is a view for explaining a method of fixing a planar heat insulating material.
Fig. 5 is a cross-sectional view of a multilayer shell tank of example 1 in which a granular heat insulating material is filled between tanks.
Fig. 6 is a sectional view of the multilayer case can of example 2.
Fig. 7 is a sectional view of the multilayer case can of example 3.
Fig. 8 is a cross-sectional view of the multilayer case can of example 4.
Fig. 9 is a sectional view of the multilayer case can of example 5.
Fig. 10 is a cross-sectional view of the multilayer case can of example 6.
Detailed Description
Fig. 1 shows a ship 1 on which a multi-layer hull tank 3 according to an embodiment of the present invention is mounted. The ship 1 has a hull 2 and 2 multi-layer tanks 3 mounted on the hull 2. The multi-layer shell tank 3 is a cargo tank for cryogenic fluid transfer. In the present embodiment, the multi-layered shell tanks 3 are arranged in the ship length direction, but may be arranged in the ship width direction when the ship width is wide. The number of the multi-layer tank 3 mounted on the hull 2 may be 1 or 3 or more.
The 2 multi-layered shell cans 3 have substantially the same configuration. In the present embodiment, the multi-layer can 3 is configured as a double-layer can. As shown in fig. 2, each multi-layered shell tank 3 includes an inner tank 4 storing cargo and an outer tank 5 enclosing the inner tank 4. The inner tank 4 and the outer tank 5 are substantially equally separated from each other, and a tank space 30 in the thickness direction of the tank wall is formed between the inner tank 4 and the outer tank 5. The insulation construction of the tank wall of the multi-layer shell tank 3 will be described in detail later.
The cargo may be liquefied petroleum gas (LPG, about-45 ℃), liquefied ethylene gas (LEG, about-100 ℃), liquefied natural gas (LNG, about-160 ℃), liquefied oxygen (LO 2, about-180 ℃), liquefied hydrogen (LH 2, about-250 ℃) and liquefied helium (LHe, about-270 ℃) among others. However, the cargo need not necessarily be a liquid, but may be a gas.
The inner tank 4 includes a horizontally long cylindrical inner tank body 41 and an inner tank roof 42 protruding upward from the inner tank body 41. In the present embodiment, the axial direction of the inner tank body 41 is parallel to the ship length direction. In the present embodiment, the axial direction of the inner tank ceiling 42 is parallel to the vertical direction, but may be slightly inclined with respect to the vertical direction.
The outer tank 5 includes a cylindrical outer tank main body portion 51 long in the horizontal direction and an outer tank top 52 protruding upward from the outer tank main body portion 51. The outer tank main body 51 surrounds the inner tank main body 41. The outer channel roof 52 encloses the inner channel roof 42. The axial direction of the outer tank main body 51 is parallel to the ship length direction as in the inner tank main body 41, and the axial direction of the outer tank top 52 is parallel to the vertical direction as in the inner tank top 42. However, the inner tank body 41 and the outer tank body 51 need not necessarily have a cylindrical shape long in the horizontal direction, and may have a cylindrical shape long in the vertical direction. Alternatively, the inner tank body 41 and the outer tank body 51 may have a spherical shape, or may have a cubic shape or a rectangular parallelepiped shape.
2 cargo tanks 21 are formed on the hull 2 to be opened upward. The cargo tanks 21 are arranged in the ship's length direction, and the cargo tanks 21 are separated from each other by a partition wall 22. Further, the lower portion of the multi-layered shell tank 3 is inserted into the inside of each cargo tank 21.
A pair of saddles 25 separated from each other in the ship length direction are provided inside each cargo tank 21. The saddle 25 supports the outer tank main body 51 of the outer tank 5 of the multilayer case 3. Further, a pair of support members 35 for supporting the inner tank body 41 are provided between the inner tank 4 and the outer tank 5 of the multi-layer tank 3. In the present embodiment, the support member 35 is provided at the same position as the saddle 25, but the support member 35 may be provided at a position different from the saddle 25.
A tank cover 6 is disposed above each of the multilayer case tanks 3. Each tank cover 6 covers the corresponding multi-layer shell tank 3 from above, and a holding space 7 filled with an inert gas is formed between the tank cover and the hull 2. The outer tank body 51 of the outer tank 5 is located below the tank cover 6, and the outer tank roof 52 penetrates the tank cover 6.
[ Heat insulation Structure of multilayer Shell tank 3 ]
Here, the heat insulation structure of the multilayer case 3 having the above-described structure will be described. Fig. 3 is a sectional view of a multilayer case can 3 of example 1. As shown in fig. 3, the multi-layered shell can 3 has: an inner tank 4 for storing liquefied gas; one or more outer tanks 5 disposed outside the inner tank 4 so as to surround the inner tank 4 with a gap therebetween; and a planar heat insulating material 9 that is provided so as to cover 2 or more surfaces among the outer surface of the inner tank 4, the inner surface of the outer tank 5, and the outer surface of the outer tank 5, and that blocks heat radiation, heat conduction, and heat convection.
The planar heat insulating material 9 has a panel shape. The planar heat insulating material 9 has a thickness of 0.01 to 1 time the gap between the inner tank 4 and the outer tank 5 (1 st outer tank 5A) disposed immediately outside thereof. The planar heat insulating material 9 may be a multi-layered panel in which a plate-like base material is sandwiched between heat insulating materials. However, the planar heat insulating material 9 is not limited to a planar shape, and may be a planar shape. Examples of such a planar heat insulating material 9 include a foamed polyurethane plate, an aerogel sheet, and sheet glass wool.
The planar heat insulating material 9 is fixed to the surface of the inner tank 4 or the outer tank 5 by a fixing member. As shown in fig. 4, a metal substrate 81 is bonded to the inner groove 4 (or the outer groove 5) by welding or the like. The stud bolts 82 are joined to the base plate 81 by screw structures, welding, or the like. The material of the stud bolts 82 is not particularly limited, but is preferably a material having a low thermal conductivity such as Glass Fiber Reinforced Plastic (GFRP). The stud bolts 82 are inserted through holes provided in the planar heat insulating material 9, and then screwed into nuts 83. In this example, the stud 82 and the nut 83 correspond to a fixing member. However, the planar heat insulating material 9 may be fixed to the surface of the inner tank 4 or the outer tank 5 by a self-adhesive function by an adhesive or a foamed polyurethane.
The space 30 (space 30A between the 1 st outer tank 5A) between the inner tank 4 and the outer tank 5 (space 5A) disposed immediately outside the inner tank 4 is filled with a low-temperature gas (for example, a gas obtained by gasifying liquefied gas of cargo). The gas filling the 1 st inter-tank 30A may be gas flowing in from the gas vaporized in the inner tank 4 by communicating the inner tank 4 with the 1 st inter-tank 30A.
The pressure of the 1 st cell 30A is 1kPa or more. The pressure of the 1 st cell 30A is sufficiently higher than that of the conventional vacuum heat insulation. The pressure of the 1 st cell 30A may be 1kPa or more and may be negative with respect to the atmospheric pressure. In this case, the vacuum degree of the 1 st cell 30A is sufficiently lower than that of the conventional vacuum heat insulation.
A gap 31 in the thickness direction of the tank wall of the multilayer case tank 3 is provided between the 1 st grooves 30A. The planar insulating material 9 is not present in the void 31. The gap 31 is used as a space for work and has a sufficient size for work. The gap 31 may be used for arrangement of piping. The size of the tank wall of the gap 31 in the thickness direction is, for example, 0.1 to 0.99 times the gap between the grooves 30. When the gap 31 is enlarged, the operator can enter the gap 31 at the time of the construction to perform the work of fixing the planar heat insulating material 9 to the inner tank 4 and the outer tank 5. In addition, during maintenance, an operator can enter the gap 31 to inspect the planar heat insulator 9 or perform maintenance on the planar heat insulator 9. In the present embodiment, the planar heat insulating material 9 is fixed to the surface of the inner tank 4 or the outer tank 5 by the fixing material, and therefore, it is particularly useful to provide the gap 31 for moving the planar heat insulating material 9 or processing the fixing material. On the other hand, when the planar heat insulating material 9 and the void 31 are increased, the outer tank 5 is increased in size, and there is a case where the installation space or the tank weight is increased, which affects the cost. In the multilayer can 3, the thickness of the planar heat insulating material 9 and the distance between the grooves 30 and the gaps 31 can be flexibly selected according to the required heat insulating performance and the limitation of the installation space.
As shown in fig. 5, the gap 31 between the 1 st grooves 30A may be filled with a granular heat insulating material 95 such as perlite. This can further improve the heat insulating performance of the multilayer case 3.
An example of the arrangement of the planar heat insulating material 9 in the multilayer can 3 will be described below. Preferably, the planar heat insulating material 9 includes: a 1 st planar heat insulating material provided so as to cover any one of the inner surface of the 1 st outer tank 5A and the outer surface of the 1 st outer tank 5A, which are disposed immediately outside the inner tank 4, of the outer tanks 5; and a 2 nd planar heat insulating material provided so as to cover the outer surface of the inner tank 4 and the inner surface of the outer tank 5 and the surface of the outer tank 5, which is not covered with the 1 st planar heat insulating material.
The heat insulating properties of the 1 st and 2 nd planar heat insulating materials may be different from each other depending on the place where the planar heat insulating material 9 is disposed. By appropriately adjusting the types and thicknesses of the 1 st and 2 nd planar heat insulating materials in accordance with the 1 st and 2 nd cells 30A and 30B having different temperature and atmosphere conditions, the multilayered shell can 3 can have sufficiently high heat insulating performance even if the cells 30 of the multilayered shell can 3 are not in high vacuum.
< 1 st example >
The multi-layered shell tank 3A shown in fig. 3 is a double-layered shell tank having an inner tank 4 and an outer tank 5. The planar heat insulating material 9 is fixed to the outer surface of the inner tank 4 so as to cover the outer surface of the inner tank 4. The planar heat insulating material 9 is fixed to the outer surface of the outer tank 5 so as to cover the outer surface of the outer tank 5.
< 2 nd example >
The multi-layered shell tank 3B shown in fig. 6 is a double-layered shell tank having an inner tank 4 and an outer tank 5. The planar heat insulating material 9 is fixed to the inner surface of the outer tank 5 so as to cover the inner surface of the outer tank 5. The planar heat insulating material 9 is fixed to the outer surface of the outer tank 5 so as to cover the outer surface of the outer tank 5.
< example 3 >
The multi-layered shell tank 3C shown in fig. 7 is a double-layered shell tank having an inner tank 4 and an outer tank 5. The planar heat insulating material 9 is fixed to the inner surface of the inner tank 4 so as to cover the outer surface of the inner tank 4. The planar heat insulating material 9 is fixed to the inner surface of the outer tank 5 so as to cover the inner surface of the outer tank 5. The planar heat insulating material 9 is fixed to the outer surface of the outer tank 5 so as to cover the outer surface of the outer tank 5.
< example 4 >
The multi-layered shell tank 3D shown in fig. 8 is a three-layered shell tank having an inner tank 4 and a double-layered outer tank 5. The double-layered outer tank 5 is composed of a 1 st outer tank 5A disposed immediately outside the inner tank 4 and a 2 nd outer tank 5B disposed outside the 1 st outer tank 5A. The space 30 between the 1 st outer tank 5A and the 2 nd outer tank 5B (space 30B between the 2 nd tanks) is filled with an inert gas (for example, nitrogen gas or the like) having a boiling point higher than that of the gas filled in the 1 st space 30A.
In the multi-layered shell tank 3D, the planar heat insulating material 9 is fixed to the outer surface of the inner tank 4 so as to cover the outer surface of the inner tank 4. The planar heat insulating material 9 is fixed to the outer surface of the 1 st outer groove 5A so as to cover the outer surface of the 1 st outer groove 5A. The planar heat insulating material 9 is fixed to the outer surface of the 2 nd outer groove 5B so as to cover the outer surface of the 2 nd outer groove 5B. In the multilayer case 3D, instead of the planar heat insulator 9 covering the outer surface of the 1 st outer tank 5A, the planar heat insulator 9 may be fixed to the inner surface of the 1 st outer tank 5A so as to cover the inner surface of the 1 st outer tank 5A. In the multilayer can 3D, instead of the planar heat insulating material 9 covering the outer surface of the 2 nd outer tank 5B, the planar heat insulating material 9 may be fixed to the inner surface of the 2 nd outer tank 5B so as to cover the inner surface of the 2 nd outer tank 5B.
< example 5 >
The multi-layered shell tank 3E shown in fig. 9 is a three-layered shell tank having an inner tank 4 and a double-layered outer tank 5 (1 st outer tank 5A and 2 nd outer tank 5B). In the multilayer case 3E, the planar heat insulating material 9 is fixed to the inner surface of the 1 st outer tank 5A so as to cover the inner surface of the 1 st outer tank 5A. The planar heat insulating material 9 is fixed to the outer surface of the 1 st outer groove 5A so as to cover the inner surface of the 1 st outer groove 5A. In the multilayer case 3E, at least one of the outer surface of the inner tank 4, the inner surface of the 2 nd outer tank 5B, and the outer surface of the 2 nd outer tank 5B may be covered with the planar heat insulating material 9, in addition to the inner surface and the outer surface of the 1 st outer tank 5A being covered with the planar heat insulating material 9.
< example 6 >
The multi-layered shell tank 3F shown in fig. 10 is a three-layered shell tank having an inner tank 4 and a double-layered outer tank 5 (1 st outer tank 5A and 2 nd outer tank 5B). In the multilayer case 3F, the planar heat insulating material 9 is fixed to the inner surface of the 1 st outer tank 5A so as to cover the inner surface of the 1 st outer tank 5A. The planar heat insulating material 9 is fixed to the inner surface of the 2 nd outer tank 5B so as to cover the inner surface of the 2 nd outer tank 5B. In the multilayer case 3F, instead of the planar heat insulating material 9 covering the inner surface of the 1 st outer tank 5A, the planar heat insulating material 9 may be fixed to the outer surface of the 1 st outer tank 5A so as to cover the outer surface of the 1 st outer tank 5A. In the multilayer case 3F, instead of the planar heat insulating material 9 covering the inner surface of the 2 nd outer tank 5B, the planar heat insulating material 9 may be fixed to the outer surface of the 2 nd outer tank 5B so as to cover the outer surface of the 2 nd outer tank 5B. In the multilayer shell tank 3F, instead of the planar heat insulating material 9 covering the inner surface of the 2 nd outer tank 5B, the planar heat insulating material 9 may be fixed to the outer surface of the inner tank 4 so as to cover the outer surface of the inner tank 4.
[ summary ]
As described above, the multilayer case can 3 of the present embodiment includes: an inner tank 4 for storing liquefied gas; one or more outer tanks 5 disposed outside the inner tank 4 with a gap therebetween so as to surround the inner tank 4; and a planar heat insulating material 9 fixed to 2 or more surfaces among the outer surface of the inner tank 4, the inner surface of the outer tank 5, and the outer surface of the outer tank 5 so as to cover the surfaces, and that blocks heat conduction and heat convection, and that fills the space 30 with gas.
The following arrangement can be exemplified as the arrangement of the planar heat insulating material 9 in the case where the outer tank 5 is provided as a single layer.
(example 1) the planar heat insulating material 9 is provided so as to cover the outer surface of the inner tank 4 and the inner surface of the outer tank 5.
(example 2) the planar heat insulating material 9 is provided so as to cover both the outer surface of the inner tank 4 and the outer surface of the outer tank 5.
(example 3) the planar heat insulating material 9 is provided so as to cover both the inner surface of the outer tank 5 and the outer surface of the outer tank 5.
(example 4) the planar heat insulating material 9 is provided so as to cover three surfaces of the outer surface of the inner tank 4, the inner surface of the outer tank 5, and the outer surface of the outer tank 5.
The ship 1 of the present embodiment is characterized by having a hull 2 and a multi-layer tank 3 mounted on the hull 2.
According to the multi-layer shell tank 3 and the ship 1 having the above-described structure, heat conduction and heat convection are blocked by the two heat insulating layers made of the planar heat insulating material 9, so that even if the space 30 is filled with gas, the tank wall of the multi-layer shell tank 3 can have sufficiently high heat insulating performance. In the multilayer shell tank 3 having the above-described structure, since the planar heat insulator 9 is fixed to the surface of the inner tank 4 or the outer tank 5, even if the inner tank 4 and the outer tank 5 thermally shrink, positional displacement or misalignment of the planar heat insulator 9 with respect to the surface to which the planar heat insulator 9 is attached is less likely to occur, and the reliability of the heat insulating performance of each portion of the tank wall can be improved.
In the multilayer case 3 having the above-described structure, the pressure between the inner tank 4 and the tank 30 (1 st tank 30A) of the outer tank 5 (1 st outer tank 5A) disposed immediately outside the inner tank 4 may be 1kPa or more.
The pressure of the 1 st cell 30A may be negative with respect to the atmospheric pressure. Thereby, the tank wall of the multi-layer shell tank 3 can have higher heat insulating performance.
In the multilayer case 3 having the above-described structure, the planar heat insulating material 9 may be a planar shape.
In the multilayer case 3 having the above-described structure, the planar heat insulator 9 may be fixed to the surface covered with the planar heat insulator 9 by a fixing member (stud 82 and nut 83).
In this way, the planar heat insulating material 9 is fixed by the fixing material, and thus the mounting and dismounting are relatively easy, and the site work can be simplified.
In the multilayer case 3 having the above-described structure, the space 30 may have a space 31 for working in the thickness direction. Here, the void 31 is a space in the space 30 which is not occupied by the planar heat insulating material 9 and through which an object other than gas (for example, an operator or piping) can pass.
By providing the gap 31 in the space 30 in this way, the operator can perform the installation work, piping work, and the like of the planar heat insulator 9 by using the gap 31 at the time of construction, and the operator can perform the inspection of the planar heat insulator 9 by introducing an inspection device into the gap 31 at the time of maintenance, the replacement work of the planar heat insulator 9 by using the gap 31, and the like.
In the multilayer case can 3 having the above-described structure, the planar heat insulating material 9 preferably includes: a 1 st planar heat insulating material provided so as to cover any one of the inner surface of the 1 st outer tank 5A and the outer surface of the 1 st outer tank 5A, which are disposed immediately outside the inner tank 4, of the outer tanks 5; and a 2 nd planar heat insulating material provided so as to cover the surface of the inner tank 4, the inner surface of the outer tank 5, and the surface of the outer tank 5 that is not covered with the 1 st planar heat insulating material.
Thus, the heat insulation is particularly emphasized inside and outside the 1 st outer tank 5A.
While the preferred embodiments of the present invention have been described above, it is possible to include the present invention in a form in which the specific structure and/or the details of the functions of the above-described embodiments are changed without departing from the gist of the present invention. The above-described configuration can be modified as follows, for example.
For example, in the above-described embodiment, the multi-layered shell tank 3 is mounted on the ship 1, but the structure of the multi-layered shell tank 3 may be applied to a tank for storing liquefied gas that is provided on the ground.
Description of the reference numerals
1: a vessel; 2: a hull; 3. 3A to 3F: a multi-layer shell can; 4: an inner tank; 5: an outer groove; 5A: a 1 st outer groove; 9: a planar heat insulating material; 30: the grooves are formed; 31: a void.

Claims (11)

1. A multi-layer shell can having:
an inner tank for storing liquefied gas;
one or more layers of outer grooves disposed outside the inner groove with a gap therebetween so as to surround the inner groove; and
a planar heat insulating material fixed to 2 or more surfaces among the outer surface of the inner tank, the inner surface of the outer tank, and the outer surface of the outer tank so as to cover the surfaces, and that blocks heat conduction and heat convection,
the space between the grooves is filled with a gas.
2. The multi-layered can of claim 1 wherein,
the pressure between the inner tank and the outer tank disposed immediately outside the inner tank is 1kPa or more.
3. The multi-layered can according to claim 1 or 2, wherein,
the planar heat insulating material is in a planar shape.
4. A multi-layered shell can according to any one of claim 1 to 3, wherein,
the planar heat insulating material is fixed to a surface covered with the planar heat insulating material by a fixing member.
5. The multi-layered can according to any one of claim 1 to 4, wherein,
the grooves each have a gap for working in the thickness direction of the tank wall.
6. The multi-layered can according to any one of claims 1 to 5, wherein,
the planar heat insulating material comprises:
a 1 st planar heat insulating material provided so as to cover any one of an inner surface of the 1 st outer tank and an outer surface of the 1 st outer tank, the inner surface being disposed immediately outside the inner tank, of the outer tanks; and
and a 2 nd planar heat insulating material provided so as to cover the surface of the inner tank, the surface of the outer tank, and the surface of the outer tank, which is not covered with the 1 st planar heat insulating material.
7. The multi-layered can according to any one of claims 1 to 5, wherein,
the outer groove is a layer of the outer groove,
the planar heat insulating material is disposed so as to cover the outer surface of the inner tank and the inner surface of the outer tank.
8. The multi-layered can according to any one of claims 1 to 5, wherein,
the outer groove is a layer of the outer groove,
the planar heat insulating material is provided so as to cover both the outer surface of the inner tank and the outer surface of the outer tank.
9. The multi-layered can according to any one of claims 1 to 5, wherein,
the outer groove is a layer of the outer groove,
the planar heat insulating material is disposed so as to cover both the inner surface of the outer tank and the outer surface of the outer tank.
10. The multi-layered can according to any one of claims 1 to 5, wherein,
the outer groove is a layer of the outer groove,
the planar heat insulating material is provided so as to cover three surfaces of the outer surface of the inner tank, the inner surface of the outer tank, and the outer surface of the outer tank.
11. A watercraft, having:
a hull; and
the multi-layered shell tank according to any one of claims 1 to 10 mounted on the hull.
CN202080108209.3A 2020-12-28 2020-12-28 Multi-layer shell tank and ship Pending CN116670023A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/049136 WO2022144971A1 (en) 2020-12-28 2020-12-28 Multi-shell tank and vessel

Publications (1)

Publication Number Publication Date
CN116670023A true CN116670023A (en) 2023-08-29

Family

ID=82260363

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080108209.3A Pending CN116670023A (en) 2020-12-28 2020-12-28 Multi-layer shell tank and ship

Country Status (5)

Country Link
EP (1) EP4269225A1 (en)
JP (1) JPWO2022144971A1 (en)
KR (1) KR20230119006A (en)
CN (1) CN116670023A (en)
WO (1) WO2022144971A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10141595A (en) * 1996-11-05 1998-05-29 Ishikawajima Harima Heavy Ind Co Ltd Low temperature liquefied gas storage tank
KR101865210B1 (en) * 2013-06-21 2018-06-07 카와사키 주코교 카부시키 카이샤 Liquefied gas-storing tank and liquefied gas transport vessel
JP6364694B2 (en) * 2014-07-10 2018-08-01 三菱造船株式会社 Carrier ship
CN111213003B (en) 2017-10-16 2021-09-21 川崎重工业株式会社 Double-shell tank and ship

Also Published As

Publication number Publication date
WO2022144971A1 (en) 2022-07-07
JPWO2022144971A1 (en) 2022-07-07
KR20230119006A (en) 2023-08-14
EP4269225A1 (en) 2023-11-01

Similar Documents

Publication Publication Date Title
KR101337644B1 (en) Insulation structure and liquefied natural gas storage tank including the same
CN111213003B (en) Double-shell tank and ship
EP2812624B1 (en) Tank container for transport and storage of cryogenic liquefied gases
EP3904196B1 (en) Ship
KR20150107101A (en) Cargo tank structuer and setting up method of the same
KR100924099B1 (en) Cargo containment system of lng ship and construction method thereof
CN116670023A (en) Multi-layer shell tank and ship
KR20110133887A (en) Heat insulation structure for cryogenic liquid storage tank
JP5968985B2 (en) Tank support structure and ship
KR102469993B1 (en) Handling device for insulation panel
KR102651474B1 (en) Insulation System of Liquefied Natural Gas Storage Tank
KR20140021198A (en) Insulation system for membrane type lng cargo tank
TW202314156A (en) Storage installation for liquefied gas
KR20170034548A (en) Insulation Box Of Cargo Tank And Manufacturing Method Of The Same
JPH04258598A (en) Vacuum type heat insulating panel for super low temperature cargo storage tank
JP2022133232A (en) double shell liquid hydrogen tank
KR101788748B1 (en) Insulation Structure For LNG Carrier
KR20240058875A (en) Storage facilities for liquefied gas
TW202405336A (en) Wall for a sealed and thermally insulating tank
KR20240052773A (en) Storage facilities for liquefied gas
KR20220039242A (en) Cargo of liquefied natural gas
KR101739982B1 (en) Lng storage tank and insulation box thereof
KR20230153288A (en) Tank wall traversed by a sealed fluid-discharge conduit
KR20230001605A (en) Insulation structure of cargo tank
KR20210047541A (en) Vacuum Insulation System of Liquefied Gas Storage Tank

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination