WO2021260946A1 - Réservoir à double coque - Google Patents

Réservoir à double coque Download PDF

Info

Publication number
WO2021260946A1
WO2021260946A1 PCT/JP2020/025366 JP2020025366W WO2021260946A1 WO 2021260946 A1 WO2021260946 A1 WO 2021260946A1 JP 2020025366 W JP2020025366 W JP 2020025366W WO 2021260946 A1 WO2021260946 A1 WO 2021260946A1
Authority
WO
WIPO (PCT)
Prior art keywords
tank
inner tank
heat insulating
shell
double
Prior art date
Application number
PCT/JP2020/025366
Other languages
English (en)
Japanese (ja)
Inventor
貴裕 山口
聡 堀野
哲 山口
友巳 熊野
Original Assignee
川崎重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 川崎重工業株式会社 filed Critical 川崎重工業株式会社
Priority to CN202080102360.6A priority Critical patent/CN115720615A/zh
Priority to EP20941713.8A priority patent/EP4174360A4/fr
Priority to KR1020237001203A priority patent/KR20230024370A/ko
Priority to PCT/JP2020/025366 priority patent/WO2021260946A1/fr
Publication of WO2021260946A1 publication Critical patent/WO2021260946A1/fr

Links

Images

Classifications

    • 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
    • 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
    • B65D88/00—Large containers
    • B65D88/02—Large containers rigid
    • B65D88/04—Large containers rigid spherical
    • 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
    • F17C3/08—Vessels not under pressure with provision for thermal insulation by vacuum spaces, e.g. Dewar flask
    • 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
    • B65D90/02—Wall construction
    • B65D90/022—Laminated structures
    • 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
    • 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
    • F17C2203/0337—Granular
    • 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
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • 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
    • F17C2260/03—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

Definitions

  • the present invention relates to the structure of a double-shell tank including an outer tank and an inner tank.
  • a double-shell tank has been known as a tank for storing a low-temperature liquid.
  • a double-shell tank is generally formed between an inner tank that substantially contains a low-temperature liquid, an outer tank that covers the inner tank from the outside at a predetermined interval, and an inner tank and an outer tank. It is provided with a heat insulating layer.
  • the heat insulating layer is formed of, for example, a granular heat insulating material filled between the inner tank and the outer tank, and pearlite is used as the granular heat insulating material.
  • the granular heat insulating material is filled so as to fill the space between the inner tank and the outer tank with the inner tank empty. Therefore, when a low-temperature liquid is supplied to the inner tank and the inner tank heat shrinks, the distance between the inner tank and the outer tank widens, and the granular heat insulating material filled between the inner tank and the outer tank can settle. There is sex. When the granular heat insulating material is settled, a space where the granular heat insulating material does not exist is created at the top of the double-shell tank, and the thickness of the heat insulating layer at the top of the tank is reduced.
  • the heat insulating property of the portion deteriorates. Due to the deterioration of heat insulation, the cold heat of the inner tank is transmitted to the outer tank, which may cause frost on the outer tank and cause corrosion of the outer tank. Further, if the amount of heat input to the inner tank increases due to the deterioration of the heat insulating property, the amount of boil-off gas of the low-temperature liquid increases, and the pressure in the inner tank may become excessive.
  • an inner heat insulating layer made of an elastic material (glass wool) that can be expanded and contracted in the radial direction of the inner tank and an outer heat insulating layer made of a filler (pearlite) are used. It has a heat insulating layer consisting of two layers, inside and outside. In this double-shell tank, the gap generated in the heat insulating layer due to the heat shrinkage of the inner tank is filled with the expanded elastic material, and the sedimentation of the filler is suppressed.
  • the present invention has been made in view of the above circumstances, and an object thereof is to form a heat insulating layer between an inner tank and an outer tank by a granular heat insulating material, and to form granules due to shrinkage deformation of the inner tank. It is an object of the present invention to provide a double-shell tank capable of maintaining a heat insulating layer having an appropriate thickness at the top of the tank even after the heat insulating material has settled.
  • the double shell tank according to one aspect of the present invention is A spherical shell-shaped inner tank with a storage unit that stores liquid in a sealed state,
  • the outer tank that covers the inner tank and A granular heat insulating material that is filled in the space surrounded by the outer wall of the inner tank and the inner wall of the outer tank to form a heat insulating layer is provided.
  • the size of the top gap between the inner tank and the outer tank when the inner tank is empty is the size of the bottom gap between the inner tank and the outer tank, and the size of the bottom gap between the inner tank and the outer tank is the same as the empty state of the inner tank and the inner tank. It is characterized in that the value is equal to or more than the value obtained by adding the level difference of the granular heat insulating material from the state in which the tank contains the liquid.
  • the size of the top gap is larger than the size of the bottom gap, a heat insulating layer thicker than the bottom of the tank is formed on the top of the tank when the inner tank is empty. Then, when the low-temperature liquid is supplied to the inner tank and the inner tank contracts, the gap between the inner tank and the outer tank widens, and the granular heat insulating material filled between the inner tank and the outer tank sinks. Even when the granular heat insulating material is settled, a heat insulating layer having a sufficient thickness is maintained at the top of the tank.
  • the heat insulating layer is formed between the inner tank and the outer tank by the granular heat insulating material, and the tank is set even after the granular heat insulating material has settled due to the shrinkage deformation of the inner tank. It can be compatible with maintaining a heat insulating layer of appropriate thickness on the top.
  • the outer tank may have a spherical shell shape, and the center of the outer tank may be located above the center of the inner tank.
  • both the outer tank and the inner tank have a spherical shell shape with excellent strength, but the gap between the tops of the inner tank and the outer tank is formed.
  • the size can be made larger than the size of the bottom gap between the inner tank and the outer tank.
  • the outer tank is composed of a lower hemisphere shell portion, an upper hemisphere shell portion, and a tubular body portion connecting the lower hemisphere shell portion and the upper hemisphere shell portion.
  • the center of the tank and the center of the lower hemisphere shell portion may coincide with each other.
  • a heat insulating layer of a certain thickness is formed around it.
  • a heat insulating layer thicker than the heat insulating layer below the equator of the inner tank is formed around the equator.
  • the outer tank has a shape similar to that of a spherical shell, and the outer tank can be provided with sufficient strength.
  • the outer tank comprises a main body portion having a spherical shell shape and a dome portion provided at the top of the main body portion and filled with the granular heat insulating material, and serves as the center of the inner tank. It may be aligned with the center of the main body.
  • the dome portion filled with the granular heat insulating material is provided at the top of the main body portion of the outer tank, the inner tank contracts and deforms and is filled between the inner tank and the main body portion of the outer tank. Even if the granular heat insulating material is settled, the settling amount is supplemented by the granular heat insulating material filled in the dome portion. Therefore, even when the granular heat insulating material is settled, a heat insulating layer having a sufficient thickness is maintained at the top of the tank.
  • a heat insulating layer is formed between the inner tank and the outer tank by the granular heat insulating material, and an appropriate thickness is applied to the top of the tank even after the granular heat insulating material has settled due to the shrinkage deformation of the inner tank. It is possible to provide a double-shell tank that is compatible with retaining a heat insulating layer.
  • FIG. 1 is a cross-sectional view showing the overall configuration of an empty double-shell tank according to the first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a double-shell tank showing a state in which a low-temperature liquid is supplied to the inner tank shown in FIG.
  • FIG. 3 is a cross-sectional view showing the overall configuration of an empty double-shell tank according to the second embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a double-shell tank showing a state in which a low-temperature liquid is supplied to the inner tank shown in FIG.
  • FIG. 5 is a cross-sectional view showing the overall configuration of an empty double-shell tank according to a third embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a double-shell tank showing a state in which a low-temperature liquid is supplied to the inner tank shown in FIG.
  • FIG. 1 is a cross-sectional view showing the overall configuration of an empty double-shell tank 1A according to the first embodiment of the present invention
  • FIG. 2 shows a low-temperature liquid 7 being supplied to the inner tank 2 shown in FIG. It is sectional drawing of the double shell tank 1A which shows the state.
  • the double-shell tank 1A shown in FIGS. 1 and 2 is a tank for storing a low-temperature liquid 7 such as liquid hydrogen, liquid nitrogen, and liquefied natural gas.
  • the double shell tank 1A is installed on the hull, on the ground, or the like while being supported by a skirt or a support (not shown).
  • the double-shell tank 1A includes an inner tank 2, an outer tank 3 that covers the inner tank 2, a granular heat insulating material 4 that is filled between the inner tank 2 and the outer tank 3 to form a heat insulating layer, and an inner tank 2.
  • a vacuum pump 6 for evacuating the space between the outer tank 3 and the outer tank 3 is provided.
  • the inner tank 2 has a hollow spherical shell shape, and is formed by welding, for example, a large number of SUS panels. Inside the inner tank 2, a storage unit 21 for storing the low temperature liquid 7 in a closed state is formed.
  • the inner tank 2 can tolerate shrinkage deformation and deformation recovery due to the temperature difference between the normal temperature at the time of tank construction and the low temperature at the time of accommodating the low temperature liquid 7.
  • the outer tank 3 has a hollow spherical shell shape that is one size larger than the inner tank 2, and is formed by welding, for example, a large number of steel plates.
  • the diameter of the outer tank 3 is larger than the diameter of the inner tank 2.
  • the inner tank 2 is supported by the outer tank 3 by a rod or the like (not shown) connecting between the outer wall of the inner tank 2 and the inner wall of the outer tank 3.
  • the granular heat insulating material 4 is packed in a compact state in the space surrounded by the outer wall of the inner tank 2 and the inside of the outer tank 3.
  • the granular heat insulating material 4 is, for example, granular pearlite.
  • a known granular heat insulating material other than pearlite may be adopted.
  • the space between the inner tank 2 and the outer tank 3 filled with the granular heat insulating material 4 is forcibly exhausted by the vacuum pump 6 and is almost in a vacuum state.
  • top gap G2 the gap between the inner wall of the outer tank 3 and the outer wall of the inner tank 2 on the tank center line C.
  • the inner tank 2 and the outer tank 3 are arranged so that the top gap G2 is larger than the bottom gap G1. That is, the inner tank 2 and the outer tank 3 are arranged so that the center 3c of the outer tank 3 is located above the center 2c of the inner tank 2.
  • the center 3c of the outer tank 3 is the center of the spherical shell shape of the outer tank 3, and the center 2c of the inner tank 2 is the center of the spherical shell shape of the inner tank 2.
  • the size L2 of the top gap G2 in the state where the inner tank 2 is empty accommodates the state where the inner tank 2 is empty (FIG. 1) and the low temperature liquid 7 in the size L1 of the bottom gap G1. It is equal to or greater than the value obtained by adding the level difference ⁇ L of the granular heat insulating material 4 from the state (FIG. 2). That is, the following equation 1 holds.
  • the "state in which the inner tank 2 contains the low temperature liquid 7" may be a state in which the low temperature liquid 7 is contained in the storage unit 21 up to a predetermined full load level (or up to an arbitrary reference liquid level). .. L2> L1 + ⁇ L ... (Equation 1)
  • the level difference ⁇ L that is, the amount of sedimentation of the granular heat insulating material 4) can be obtained by calculation or simulation.
  • the double-shell tank 1A includes a spherical shell-shaped inner tank 2 in which a storage portion 21 for storing the low-temperature liquid 7 in a sealed state is formed inside, and an inner tank 2.
  • the outer tank 3 to be covered and the granular heat insulating material 4 which is filled in the space surrounded by the outer wall of the inner tank 2 and the inner wall of the outer tank 3 to form a heat insulating layer are provided.
  • the size L2 of the top gap G2 between the inner tank 2 and the outer tank 3 is the size L1 of the bottom gap G1 between the inner tank 2 and the outer tank 3, and the inner tank 2 is empty and the inner tank 2 is empty. It is equal to or greater than the value obtained by adding the level difference ⁇ L of the granular heat insulating material 4 from the state in which the low temperature liquid 7 is contained.
  • the heat insulating layer is formed between the inner tank 2 and the outer tank 3 by the granular heat insulating material 4, and the shrinkage deformation of the inner tank 2 is caused. Therefore, even after the granular heat insulating material 4 has settled, it is possible to maintain a heat insulating layer having an appropriate thickness L2'at the top of the tank at the same time.
  • the outer tank 3 has a spherical shell shape, and the center 3c of the outer tank 3 is located above the center 2c of the inner tank 2.
  • both the outer tank 3 and the inner tank 2 have a spherical shell shape having excellent strength, but the inner tank 2 and the inner tank 2
  • the size L2 of the top gap G2 with the outer tank 3 can be made larger than the size L1 of the bottom gap G1 between the inner tank 2 and the outer tank 3.
  • FIG. 3 is a cross-sectional view showing the overall configuration of the empty double-shell tank 1B according to the second embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the double shell tank 1B showing a state in which the low temperature liquid 7 is supplied to the inner tank 2 shown in FIG.
  • the same or similar members as those of the above-mentioned first embodiment are designated by the same reference numerals in the drawings, and detailed description thereof will be omitted.
  • the double-shell tank 1B includes a spherical shell-shaped inner tank 2 in which a storage unit 21 for storing the low-temperature liquid 7 in a sealed state is formed inside.
  • the outer tank 3 that covers the inner tank 2 and the granular heat insulating material 4 that is filled in the space surrounded by the outer wall of the inner tank 2 and the inner wall of the outer tank 3 to form a heat insulating layer are provided.
  • the outer tank 3 includes a lower hemisphere shell portion 31, an upper hemisphere shell portion 32, and a tubular body portion 33 that connects the lower hemisphere shell portion 31 and the upper hemisphere shell portion 32 in the vertical direction.
  • the diameters of the lower hemisphere shell portion 31, the upper hemisphere shell portion 32, and the body portion 33 are equal, and the value thereof is larger than the diameter of the inner tank 2.
  • the inner tank 2 and the outer tank 3 are arranged so that the center 2c of the inner tank 2 and the center 31c of the lower hemisphere shell portion 31 coincide with each other.
  • the inner tank 2 is supported by the outer tank 3 by a rod or the like (not shown) connecting between the outer wall of the inner tank 2 and the inner wall of the outer tank 3.
  • the outer tank 3 connects the lower hemisphere shell portion 31, the upper hemisphere shell portion 32, the lower hemisphere shell portion 31 and the upper hemisphere shell portion 32. It is composed of a tubular body portion 33, and the center 2c of the inner tank 2 and the center 31c of the lower hemispherical shell portion 31 coincide with each other.
  • a heat insulating layer having a certain thickness is formed around the equator below the equator of the inner tank 2, and above the equator of the inner tank 2, the surrounding area is below the equator of the inner tank 2.
  • a heat insulating layer thicker than the heat insulating layer is formed. In this way, the size L2 of the top gap G2 between the inner tank 2 and the outer tank 3 becomes the size L1 of the bottom gap G1 between the inner tank 2 and the outer tank 3, and the inner tank 2 is empty and inside.
  • a double-shell tank 1B having a value equal to or greater than the value obtained by adding the level difference ⁇ L of the granular heat insulating material 4 from the state in which the tank 2 contains the low-temperature liquid 7 is realized with a simple structure.
  • the inner tank 2 has a spherical shell shape and the outer tank 3 is not a spherical shell, the shape can be similar to that of a spherical shell, and the outer tank 3 can be provided with sufficient strength.
  • FIG. 5 is a cross-sectional view showing the overall configuration of the empty double-shell tank 1C according to the third embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of the double shell tank 1C showing a state in which the low temperature liquid 7 is supplied to the inner tank 2 shown in FIG.
  • the same or similar members as those of the above-mentioned first embodiment are designated by the same reference numerals in the drawings, and detailed description thereof will be omitted.
  • the double shell tank 1C includes a spherical shell-shaped inner tank 2 in which a storage unit 21 for storing the low temperature liquid 7 in a sealed state is formed inside.
  • the outer tank 3 that covers the inner tank 2 and the granular heat insulating material 4 that is filled in the space surrounded by the outer wall of the inner tank 2 and the inner wall of the outer tank 3 to form a heat insulating layer are provided.
  • the outer tank 3 is composed of a main body portion 35 having a spherical shell shape and a dome portion 36 provided at the top of the main body portion 35.
  • the shape of the dome portion 36 is not particularly limited, but may be, for example, a shape in which the pod is turned upside down. Assuming that the dome portion 36 does not exist, the volume of the void generated at the top of the main body portion 35 due to the sedimentation of the granular heat insulating material 4 of the main body portion 35 due to the contraction deformation of the inner tank 2 is defined as ⁇ V.
  • the volume of the dome portion 36 is larger than ⁇ V. That is, the dome portion 36 is filled with the granular heat insulating material 4 having a volume larger than ⁇ V.
  • the inner tank 2 and the outer tank 3 are arranged so that the center 2c of the inner tank 2 and the center 35c of the main body 35 coincide with each other.
  • the inner tank 2 is supported by the outer tank 3 by a rod or the like (not shown) connecting between the outer wall of the inner tank 2 and the inner wall of the outer tank 3.
  • the outer tank 3 is composed of a main body portion 35 having a spherical shell shape and a dome portion 36 provided at the top of the main body portion 35.
  • the center 2c of the tank 2 and the center 35c of the main body 35 coincide with each other.
  • a dome portion 36 filled with a granular heat insulating material 4 is provided at the top of the three main outer tanks of the outer tank 3.
  • the size L2 of the top gap G2 between the inner tank 2 and the outer tank 3 becomes the size L1 of the bottom gap G1 between the inner tank 2 and the outer tank 3, and the inner tank 2 is empty and inside.
  • a double-shell tank 1B having a value equal to or greater than the value obtained by adding the level difference ⁇ L of the granular heat insulating material 4 from the state in which the tank 2 contains the low-temperature liquid 7 is realized with a simple structure.
  • 1A, 1B, 1C Double shell tank 2: Inner tank 2c: Center of inner tank 3: Outer tank 3c: Center of outer tank 4: Granular heat insulating material 6: Vacuum pump 7: Low temperature liquid 21: Storage section 31: Bottom Hemispherical shell 31c: Center of lower hemisphere shell 32: Upper hemisphere shell 33: Body 35: Main body 35c: Center of main body 36: Dome C: Tank center line G1: Bottom gap G2: Top gap ⁇ L: Level difference

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Réservoir à double coque comprenant : un réservoir interne en forme de coque sphérique formé à l'intérieur de celui-ci avec une section de stockage qui stocke un liquide dans un état scellé ; un réservoir externe qui recouvre le réservoir interne ; et un matériau d'isolation thermique granulaire qui remplit l'espace entouré par la paroi externe du réservoir interne et la paroi interne du réservoir externe, pour former une couche d'isolation thermique. De plus, la taille d'un espace de partie supérieure entre le réservoir interne et le réservoir externe est supérieure ou égale à la valeur obtenue en ajoutant, à la taille de l'espace de partie inférieure entre le réservoir interne et le réservoir externe, la différence de niveau du matériau d'isolation thermique granulaire entre un état dans lequel le réservoir interne est vide et un état dans lequel le réservoir interne contient un liquide.
PCT/JP2020/025366 2020-06-26 2020-06-26 Réservoir à double coque WO2021260946A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202080102360.6A CN115720615A (zh) 2020-06-26 2020-06-26 双层壳罐
EP20941713.8A EP4174360A4 (fr) 2020-06-26 2020-06-26 Réservoir à double coque
KR1020237001203A KR20230024370A (ko) 2020-06-26 2020-06-26 이중각 탱크
PCT/JP2020/025366 WO2021260946A1 (fr) 2020-06-26 2020-06-26 Réservoir à double coque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/025366 WO2021260946A1 (fr) 2020-06-26 2020-06-26 Réservoir à double coque

Publications (1)

Publication Number Publication Date
WO2021260946A1 true WO2021260946A1 (fr) 2021-12-30

Family

ID=79282158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/025366 WO2021260946A1 (fr) 2020-06-26 2020-06-26 Réservoir à double coque

Country Status (4)

Country Link
EP (1) EP4174360A4 (fr)
KR (1) KR20230024370A (fr)
CN (1) CN115720615A (fr)
WO (1) WO2021260946A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024093425A1 (fr) * 2022-11-02 2024-05-10 乔治洛德方法研究和开发液化空气有限公司 Réservoir de stockage de liquide

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0625194U (ja) * 1992-07-17 1994-04-05 株式会社アイ・エイチ・アイ プランテック 二重殻球形タンクの支持構造
JPH07243590A (ja) * 1994-03-03 1995-09-19 Teisan Kk 断熱二重容器
JPH116600A (ja) * 1997-06-19 1999-01-12 Ishikawajima Harima Heavy Ind Co Ltd 低温タンク
US20030029877A1 (en) * 2001-07-30 2003-02-13 Mathur Virendra K. Insulated vessel for storing cold fluids and insulation method
JP2013238285A (ja) 2012-05-16 2013-11-28 Sasebo Heavy Industries Co Ltd 液体貯蔵タンク
JP2016016806A (ja) * 2014-07-10 2016-02-01 三菱重工業株式会社 運搬船
KR20180029170A (ko) * 2016-09-09 2018-03-20 삼성중공업 주식회사 액화가스 화물창

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386958A (en) * 1942-01-08 1945-10-16 Pittsburgh Des Moines Company Spherical type insulated container for liquefied gases
JPS50111018U (fr) * 1974-02-21 1975-09-10
RU180823U1 (ru) * 2017-10-24 2018-06-25 Общество с ограниченной ответственностью "Научно-технический комплекс "Криогенная техника" Резервуар с компенсацией усадки вакуумно-перлитной теплоизоляции

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0625194U (ja) * 1992-07-17 1994-04-05 株式会社アイ・エイチ・アイ プランテック 二重殻球形タンクの支持構造
JPH07243590A (ja) * 1994-03-03 1995-09-19 Teisan Kk 断熱二重容器
JPH116600A (ja) * 1997-06-19 1999-01-12 Ishikawajima Harima Heavy Ind Co Ltd 低温タンク
US20030029877A1 (en) * 2001-07-30 2003-02-13 Mathur Virendra K. Insulated vessel for storing cold fluids and insulation method
JP2013238285A (ja) 2012-05-16 2013-11-28 Sasebo Heavy Industries Co Ltd 液体貯蔵タンク
JP2016016806A (ja) * 2014-07-10 2016-02-01 三菱重工業株式会社 運搬船
KR20180029170A (ko) * 2016-09-09 2018-03-20 삼성중공업 주식회사 액화가스 화물창

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4174360A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024093425A1 (fr) * 2022-11-02 2024-05-10 乔治洛德方法研究和开发液化空气有限公司 Réservoir de stockage de liquide

Also Published As

Publication number Publication date
KR20230024370A (ko) 2023-02-20
CN115720615A (zh) 2023-02-28
EP4174360A1 (fr) 2023-05-03
EP4174360A4 (fr) 2024-03-20

Similar Documents

Publication Publication Date Title
US5542255A (en) High temperature resistant thermal insulation for cryogenic tanks
AU2011211009A1 (en) Cryogenic tank
WO2021260946A1 (fr) Réservoir à double coque
JPH08295394A (ja) 極低温液化ガス用の低温タンク
WO2017146086A1 (fr) Réservoir de liquide cryogénique
KR101599243B1 (ko) 이중각 압력탱크 및 그 이퀄라이징 방법
JP2022186098A (ja) 多重殻タンク
JP7261007B2 (ja) 二重殻タンク
CN212565283U (zh) 一种低温夹套式敞口双壁内罐及储罐
CN212617593U (zh) 一种lng储罐及lng罐顶结构
JP2021092316A (ja) 二重殻球形液体水素タンク
US3221916A (en) Design of an all plastic cryogenic storage chamber
KR20120127244A (ko) 액화천연가스 저장용기의 구조
JP7498848B2 (ja) 三重殻タンク
WO2021260947A1 (fr) Réservoir et récipient à double coque
KR101403621B1 (ko) 액화천연가스 저장용기의 구조 및 제작방법
JP7178262B2 (ja) 二重殻タンク
KR20220122417A (ko) 초저온 액화수소 저장탱크의 단열구조
WO2023248480A1 (fr) Réservoir de stockage de gaz liquéfié à basse température
KR20040073362A (ko) 잠수함
JPH1194198A (ja) 竪型断熱低温タンク
EP4269864A1 (fr) Réservoir triple paroi
JP3456044B2 (ja) 極低温液化ガス貯蔵タンク
JP2023089850A (ja) 液化ガス貯蔵タンク
KR20230168621A (ko) 화물창의 단열구조

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20941713

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20237001203

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020941713

Country of ref document: EP

Effective date: 20230126

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: JP