WO2019012709A1 - Structure de réservoir placée sur un pont, navire, procédé d'installation de réservoir et procédé d'inspection - Google Patents

Structure de réservoir placée sur un pont, navire, procédé d'installation de réservoir et procédé d'inspection Download PDF

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Publication number
WO2019012709A1
WO2019012709A1 PCT/JP2017/037567 JP2017037567W WO2019012709A1 WO 2019012709 A1 WO2019012709 A1 WO 2019012709A1 JP 2017037567 W JP2017037567 W JP 2017037567W WO 2019012709 A1 WO2019012709 A1 WO 2019012709A1
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WIPO (PCT)
Prior art keywords
tank
grid
lattice
deck
opening
Prior art date
Application number
PCT/JP2017/037567
Other languages
English (en)
Japanese (ja)
Inventor
亨尚 渡部
浩友 大塚
智 宮崎
Original Assignee
三菱造船株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱造船株式会社 filed Critical 三菱造船株式会社
Priority to KR1020197032149A priority Critical patent/KR102246400B1/ko
Priority to CN201780090524.6A priority patent/CN110612250B/zh
Publication of WO2019012709A1 publication Critical patent/WO2019012709A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • 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
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/002—Storage in barges or on ships
    • 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • 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
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • 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
    • 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
    • F17C2201/01—Shape
    • F17C2201/0128—Shape spherical or elliptical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/018—Supporting feet
    • 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 a deck-placement tank structure, a ship, and a method of installing and checking a tank.
  • Priority is claimed on Japanese Patent Application No. 2017-136911, filed July 13, 2017, the content of which is incorporated herein by reference.
  • Patent Literature 1 and Patent Literature 2 describe a ship in which a fuel tank of liquefied natural gas is installed on an upper deck.
  • the tank structure described in Patent Document 1 supports the fuel tank from below by using a grid-like frame body which is disposed to be separated upward from the upper deck by a plurality of saddles.
  • the present invention provides a deck-placement tank structure, a vessel, and a method of installing and checking a tank, which can improve the workability such as installation and inspection.
  • a decking tank structure includes a plurality of saddles, a grid member, a plurality of supports, a tank, an upper cover, and a plurality of lower covers.
  • a plurality of saddles are spaced apart to project from the deck of the vessel.
  • the grid material is supported from below by the plurality of saddles, and forms a grid in plan view.
  • a plurality of supports are disposed on the top surface of the grid material.
  • the tank is supported from below by a plurality of supports, and the liquefied gas is contained therein.
  • the upper cover is supported by the grid material and covers the side and upper side of the tank.
  • the plurality of lower covers form a closed space together with the upper cover by being attached so as to close the lattice-like opening of the lattice material.
  • the lower cover can close the lattice-like opening of the lattice material.
  • the lower cover attached so as to close the opening of the grid material and the grid material surrounding the opening are provided.
  • And may be provided with a recess that opens upward.
  • the heat insulating material covering the surface of the tank may be provided. At least one of the surface of the tank and the heat insulating material may include a groove for guiding the liquefied gas leaked from the tank to the recess.
  • the support according to the first to third aspects may be provided with a heat insulating block and a height adjustment member.
  • the heat protection block has a lower thermal conductivity than the tank and the grid material.
  • the height adjustment member adjusts the height of the upper surface of the heat shield block.
  • the tank according to any one of the first to fourth aspects has a shape of any one of a rectangular tank, a cylindrical tank, and a spherical tank, LNG or LPG may be accommodated as the liquefied gas.
  • the lower cover may be attached to and detached from the lattice-like opening. Therefore, while being able to install easily the square tank for LNG and LPG, a cylindrical tank, and a spherical tank, it can inspect easily.
  • a ship is provided with the deck storage tank structure according to the first to fifth aspects.
  • a tank for containing liquefied gas can be easily installed on the upper deck located above the cargo space or the like. As a result, reduction in cargo space and living space can be suppressed.
  • the method of installing a tank includes a supporting portion installing step, a tank installing step, an adjusting step, a closing step, a hull side saddle attaching step, a lattice material side saddle attaching step, including.
  • a support part installation process installs a plurality of support parts on the upper surface of a lattice material which makes a lattice shape by plane view.
  • a tank in which the liquefied gas is stored is installed on the support portion so as to be supported from below by the plurality of support portions.
  • the adjusting step the clearance between the support portion and the tank is adjusted through the grid-like opening of the grid material.
  • the lattice-like openings of the lattice material are sealed by the lower cover.
  • a plurality of saddles supporting the grid material from below are mounted on the hull.
  • the lattice material side saddle attachment process attaches the plurality of saddles to the lattice material.
  • the tank installation method may be such that the grid material side saddle installation process is performed after the hull side saddle installation process. .
  • the tank installation method may be such that the grid material side saddle installation process is performed after the hull side saddle installation process.
  • the tank installation method may be such that the hull side saddle installation process is performed after the grid material side saddle installation process. .
  • the saddle attached to the lattice can be attached to the hull. Therefore, for example, since the lattice material side saddle attachment process can be performed outside the ship, it is possible to shorten the time for putting the ship in the dock when installing a tank on a ship or the like in service.
  • the tank installation method is such that the hull side saddle installation process is performed after at least the support installation process and the tank installation process. It is good.
  • the assembled assembly is lifted with a crane or the like, The saddle can be fixed to the hull after it has been moved onto the deck of the ship. Therefore, when installing in the ship etc. which are in service, the period which docks a ship can be shortened further.
  • an inspection method includes a plurality of saddles, a lattice material, a plurality of supports, a tank, an upper cover, and a plurality of lower covers. It is an inspection method.
  • a plurality of saddles are spaced apart to project from the deck of the vessel.
  • the grid material is supported from below by the plurality of saddles, and forms a grid in plan view.
  • a plurality of supports are disposed on the top surface of the grid material.
  • the tank is supported from below by a plurality of supports, and the liquefied gas is contained therein.
  • the upper cover is supported by the grid material and covers the side and upper side of the tank.
  • the plurality of lower covers form a closed space together with the upper cover by being attached so as to close the lattice-like opening of the lattice material.
  • the inspection method of the deck placement tank structure includes a lower cover removal process, an inspection process, and a reclose process.
  • the lower cover removing step a part of the lower cover of the plurality of lower covers attached so as to close the lattice-like opening of the lattice material is removed from the lattice material.
  • the inspection process the inside of the sealed space is inspected through the opening from which the lower cover is removed.
  • the reclosing step the opening is sealed again by the lower cover removed in the lower cover removing step.
  • FIG. 1 It is a perspective view showing a schematic structure of a vessel in an embodiment of this invention. It is the perspective view which expanded tank structure 1A in the embodiment of this invention. It is a perspective view of a saddle, a lattice material, and a tank body. It is the perspective view which looked at the lattice material of the state supported by the said saddle from upper direction. It is the perspective view which looked at the tank structure in the embodiment of this invention from the lower part. It is a side view of the tank structure in an embodiment of this invention. It is a flowchart of the installation method of the tank structure in embodiment of this invention. It is explanatory drawing of the adjustment process in the installation method of the said tank structure. It is a flowchart of the inspection method in embodiment of this invention.
  • FIG. 1 is a perspective view showing a schematic configuration of a ship according to an embodiment of the present invention.
  • the ship 2 of this embodiment is provided with a hull 8, an upper structure 9, and a tank structure (deck placement tank structure) 1A.
  • the ship 2 illustrated in this embodiment is a ship such as a tanker transporting oil.
  • an upper structure 9 and a tank structure 1 ⁇ / b> A are disposed on an upper deck (deck) 10 that is an exposed deck of the hull 8.
  • the superstructure 9 has a living area and a bridge, and is disposed closer to the stern in the ship's forward direction than the cargo space for storing the oil, which is the cargo.
  • the tank structure 1A is disposed adjacent to the bow side of the upper structure 9.
  • Two tank structures 1A in this embodiment are arranged side by side in the ship width direction.
  • the upper surfaces of the tank structures 1A are disposed below the bridge in order to ensure visibility from the bridge of the upper structure 9.
  • FIG. 2 is an enlarged perspective view of a tank structure in the embodiment of the present invention.
  • FIG. 3 is a perspective view of a saddle, a grid and a tank body.
  • FIG. 4 is a perspective view of the grid member supported by the saddle as viewed from above.
  • the tank structure 1 ⁇ / b> A includes a saddle 3, a lattice member 4, a support 5 ⁇ / b> A, a tank body 6 ⁇ / b> A, and a tank cover 7.
  • the saddle 3 is provided to project upward from the upper deck 10.
  • a plurality of saddles 3 are provided at intervals, respectively, and support the lattice material 4 from below.
  • the saddle 3 illustrated in this embodiment has an X-shaped cross section.
  • the lower end portion of the saddle 3 is fixed to, for example, a strength member (not shown) or the like that is attached to the lower surface of the upper deck 10 and extends in the ship width direction or the ship success direction.
  • the saddle 3 in this embodiment has a length of about 2 m from the upper deck 10 to the upper end thereof.
  • the lattice material 4 is formed in a lattice shape.
  • the grid member 4 is supported from below by the plurality of saddles 3 described above. More specifically, the lattice material 4 is disposed in a posture parallel to the upper deck 10, and the upper end portion of the saddle 3 is fixed to the lower surface thereof.
  • the grid material 4 in this embodiment is formed of, for example, an H-shaped steel or an I-shaped steel.
  • the lattice material 4 includes an outer frame portion 15, a longitudinal beam portion 16, and a transverse beam portion 17.
  • the outer frame portion 15 forms a rectangular outer frame.
  • the outer frame portion 15 in this embodiment is provided with a pair of longitudinal members 15a extending in the direction of the ship's success and a pair of transverse members 15b extending in the direction of the ship's width.
  • the longitudinal beam portions 16 are formed to extend in the ship's forward direction, and a plurality of longitudinal beam portions 16 are provided inside the outer frame portion 15 at intervals in the ship width direction.
  • the cross beam portion 17 is formed to extend in the width direction of the ship, and a plurality of cross beam portions 17 are provided inside the outer frame portion 15 at intervals in the direction of the ship.
  • the longitudinal beam portion 16 and the transverse beam portion 17 intersect with each other on the inner side of the outer frame portion 15. In this embodiment, although the case where five vertical beam portions 16 and three horizontal beam portions 17 are provided is illustrated, the number of vertical beam portions 16 and horizontal beam portions 17 is not limited to the above number.
  • a plurality of support portions 5A are arranged on the upper surface 4u of the lattice material 4.
  • the support portions 5A illustrated in this embodiment are disposed at the intersections of the longitudinal beam portions 16 and the transverse beam portions 17, respectively.
  • the upper surfaces 5a of the plurality of support portions 5A are disposed to abut on the lower surface 6a (see FIG. 8) of the tank body 6A.
  • the support 5 ⁇ / b> A includes a heat shield block 20.
  • the heat shield block 20 is formed of a synthetic resin such as a phenol resin, or a material having a thermal conductivity lower than that of the tank body 6A and the grid member 4 such as wood. In this manner, the support portion 5A suppresses the heat conduction from the tank body 6A at extremely low temperature to the grid member 4 while supporting the tank body 6A from below.
  • the tank main body (tank) 6A accommodates, for example, liquefied natural gas (LNG), which is a fuel for a ship to travel therein.
  • LNG liquefied natural gas
  • the tank body 6A in this embodiment is a rectangular tank provided with a trunk top 21 for carrying a load of liquefied natural gas or the like in the upper center thereof.
  • the tank body 6A is supported from below by the plurality of support portions 5A described above.
  • the tank body 6A is formed of a metal such as an aluminum alloy which does not break brittlely against the cryogenic temperature of the liquefied natural gas.
  • the tank main body 6A in this embodiment is covered with a heat insulating material 40 (see FIG. 8) such as polyurethane, except for a portion in contact with the support 5A described above.
  • FIG. 5 is a perspective view of the tank structure in the embodiment of the present invention as viewed from below.
  • the tank cover 7 is disposed so as to cover the above-described tank body 6A, and forms a sealed space around the tank body 6A.
  • the tank cover 7 includes an upper cover 22 and a lower cover 23 (see FIG. 5).
  • the upper cover 22 is supported by the grid member 4 and covers the side and upper side of the tank body 6A. More specifically, the upper cover 22 includes an upper wall 22a and a side wall 22b.
  • the upper wall portion 22a is formed in a rectangular plate shape covering the upper side of the tank main body 6A.
  • the side wall portions 22 b are each formed in a tubular shape having a rectangular cross section extending downward from the four sides of the upper wall portion 22 a. In the upper cover 22 formed in this manner, the opening edge 22c facing downward is fixed to the outer frame portion 15 of the grid member 4 by welding or the like over the entire circumference.
  • a plurality of lower covers 23 are provided and attached so as to respectively close a plurality of grid-like openings 4 a (see FIG. 4) formed by the grid material 4.
  • the plurality of lower covers 23 together with the upper cover 22 form a closed space isolated from the outside around the tank body 6A. More specifically, a closed space is formed by the lower cover 23, the upper cover 22 and the lattice material 4.
  • the lower cover 23 illustrated in this embodiment is formed in a rectangular plate shape slightly larger than the opening 4a.
  • the entire periphery of each outer peripheral portion 23a of the plurality of lower covers 23 is fixed to the lower surface of the grid member 4 at the periphery of the opening 4a by welding or the like. In other words, the openings 4 a of the grid material 4 are respectively sealed from below by the lower cover 23.
  • the lower cover 23 closes the opening 4 a of the grid member 4 from the lower side to form a recess 50 (see FIG. 6) that opens upward together with the grid member 4 on the periphery of the lower cover 23.
  • FIG. 5 the case where the lower cover 23 which closes one opening 4a and the lower cover 23 which closes two openings 4a is illustrated.
  • the configuration of the lower cover 23 is not limited to the above configuration.
  • one opening 4a may be closed by a plurality of lower covers 23, or three or more openings 4a may be closed by a single lower cover 23.
  • FIG. 6 is a side view of the tank structure in the embodiment of the present invention.
  • the surface of the tank main body 6A is in close contact with the inner surface of the heat insulating material 40 covering the surface.
  • At least one of the surface of the tank main body 6A and the inner surface of the heat insulating material 40 has a groove 41.
  • the groove 41 guides the leaked liquefied natural gas, for example, when the liquefied natural gas gradually leaks from the tank body 6A. More specifically, the liquefied natural gas leaked from the tank main body 6A is guided to a predetermined recess 50A among the plurality of recesses 50 formed by the grid member 4 and the lower cover 23 described above.
  • the groove portions 41 exemplified in this embodiment are formed in a lattice shape so as to extend vertically and horizontally, and are slightly inclined so that the liquefied natural gas can be moved by its own weight toward the predetermined concave portion 50A. It is formed.
  • the predetermined concave portion 50A may be provided with a cover member formed of a material which is hard to break easily at low temperature.
  • a part of the lattice material 4 forming the predetermined concave portion 50A or the lower cover 23 forming the predetermined concave portion 50A may be formed of a material which is less likely to be brittlely broken at a low temperature.
  • groove part 41 should just be a shape which can guide liquefied natural gas to predetermined crevice 50A, and is not restricted to the above-mentioned shape.
  • FIG. 7 is a flow chart of a method of installing a tank structure in an embodiment of the present invention.
  • FIG. 8 is an explanatory view of the adjustment process in the method of installing the tank structure.
  • the installation method of the tank structure 1A a case where the installation work is mainly performed on the upper deck 10 will be described as an example.
  • a hull-side saddle mounting step (step S01) is performed.
  • a plurality of saddles 3 are installed at intervals so as to protrude from the upper deck 10 of the ship 2.
  • a lattice material side saddle attaching process (step S02) is performed.
  • the grid material 4 in a grid shape in plan view is mounted on the saddle 3 so as to be supported from below by a plurality of saddles 3 installed in the hull side saddle mounting process.
  • the saddle 3 is fixed so as not to be separated from the lattice material 4.
  • the lattice material 4 is installed in a posture to be disposed on a virtual plane parallel to the upper deck 10.
  • a support portion installation step (step S03) of installing the plurality of support portions 5A on the upper surface of the grid member 4 is performed.
  • the plurality of support portions 5A are respectively disposed in a predetermined arrangement spaced apart from each other in the ship success direction and the ship width direction so that the load of the tank body 6A is dispersed.
  • step S04 a tank installation process
  • the tank body 6A is installed on the support 5A so as to be supported from below by the plurality of supports 5A.
  • the tank body 6A is installed so that the heat shield block 20 of the support portion 5A abuts on the lower surface 6a of the tank body 6A.
  • the heat insulating material 40 is attached to the tank body 6A.
  • the upper cover 22 is installed, and the opening edge 22c of the upper cover 22 and the outer frame portion 15 of the lattice material are fixed by welding or the like.
  • step S05 the adjustment process
  • the clearance between the support portion 5A and the tank main body 6A is adjusted through the lattice-shaped openings 4a of the lattice material 4.
  • an operator performs adjustment work on a scaffold or the like assembled below the grid member 4.
  • a gap may be generated between the heat-insulation block 20 of the support portion 5A and the lower surface 6a of the tank body 6A only by installing the tank body 6A. Therefore, in this adjustment step, the height position of the heat insulating block 20 is adjusted such that all the heat insulating blocks 20 of the plurality of support portions 5A are in contact with the lower surface 6a of the tank body 6A.
  • the method shown in FIG. 8 can be exemplified.
  • a shim plate 53 having a thickness corresponding to the gap is inserted as a height adjustment member between the heat shield block 20 and the grid member 4 from the side on which the rib 52 is not disposed.
  • the height position of the heat insulating block 20 is adjusted such that the upper surface of the heat insulating block 20 (in other words, the upper surface 5a of the support 5A) is in contact with the lower surface 6a of the tank body 6A.
  • step S06 the closing step
  • the grid-like openings 4 a of the grid material 4 are closed by the lower cover 23. More specifically, on a scaffold or the like assembled below the grid member 4, the worker blocks all of the plurality of openings 4 a from below with the plurality of lower covers 23. At this time, the entire periphery of the lower cover 23 is fixed to the grid member 4 by welding or the like so that the opening 4 a is sealed by the lower cover 23. Thus, a sealed space is formed between the tank cover 7 and the tank body 6A. Then, the scaffolding assembled below the lattice material 4 is disassembled, and the installation work of the tank structure 1A is completed.
  • FIG. 9 is a flowchart of the inspection method in the embodiment of the present invention.
  • the lower cover removing step step S10 is performed.
  • the lower cover removing step a part of the lower cover 23 among the plurality of lower covers 23 attached so as to close the grid-like opening 4 a of the grid 4 is removed from the grid 4. More specifically, the lower cover 23 closing the opening 4a near the inspection point is removed.
  • a scaffold etc. are assembled below the grating
  • step S11 an inspection process
  • the inside of the sealed space is inspected visually, for example, through the opening 4a from which the lower cover 23 is removed. At this time, a worker may enter the inside of the tank cover 7 through the opening 4a.
  • repair work may be carried out as it is.
  • step S12 the re-closing step
  • the opening 4a from which the lower cover 23 has been removed in the lower cover removal step is again sealed by the lower cover 23.
  • the lower cover 23 may be reused after being removed. For example, when the lower cover 23 is broken due to the removal, a new lower cover 23 may be used. Then, the scaffold or the like assembled below the grid member 4 is disassembled to complete the inspection.
  • the clearance adjustment between the support portion 5A and the tank main body 6A is performed through the lattice-shaped opening 4a, and finally the lattice material 4 is formed by the lower cover 23.
  • the grid-like opening 4a can be closed.
  • the recess 50 formed by the grid member 4 and the lower cover 23 can be used as a container for receiving the liquefied natural gas leaked from the tank body 6A. As a result, it is possible to suppress an increase in the number of parts as compared to the case where a container for receiving liquefied natural gas is separately provided.
  • the clearance adjustment operation when performing the clearance adjustment operation, it can be performed from the lower side through the grid-like opening 4a. Furthermore, the clearance between the heat shield block 20 and the tank main body 6A can be easily confirmed visually or the like from the opening 4a. And by adopting the above-mentioned tank structure 1A, a square tank for liquefied natural gas can be easily installed on the upper deck 10 or the like.
  • the timing at which the saddle 3 is attached to the lattice 4 is not limited to the timing in the above-described embodiment.
  • FIG. 10 is a flowchart of a method of installing the tank structure in the first modified example of the embodiment of the present invention.
  • the same steps as those of the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.
  • a support portion installation step step S03
  • a tank installation step step S04
  • an adjustment step step S05
  • a closing step Step S06
  • a hull side saddle mounting process (step S01) is performed to attach the saddle 3 to the hull so that the saddle 3 protrudes from the upper deck.
  • the grid material side saddle mounting step (step S02) of attaching the plurality of saddles 3 attached to the hull to the grid material 4 is performed so that the grid material 4 is supported from below by the plurality of saddles Finish installation of.
  • step S01 the case of performing the hull side saddle mounting step (step S01) and the lattice material side saddle mounting step (step S02) after the closing step (step S06) has been described, but the hull side saddle mounting step (step S06)
  • the closing step (step S06) may be performed after step S01) and the grid material side saddle attaching step (step S02).
  • the hull side saddle attachment process (step S01) is performed after the support portion installation step (step S03), the tank installation step (step S04), etc. has been described
  • the hull side saddle attachment step (step S01) It may be performed in parallel with the installation step (step S03), the tank installation step (step S04), and the like.
  • FIG. 11 is a flowchart of a method of installing a tank structure in a second modification of the embodiment of the present invention.
  • the same steps as those of the embodiment described above are denoted by the same reference numerals, and redundant description will be omitted.
  • the support portion installation step step S03
  • the tank installation step step S04
  • the adjustment step step S05
  • the closing step Step S06
  • the grid material side saddle mounting step (step S02) for attaching the saddle 3 to the grid material 4 is performed so that the saddle 3 protrudes downward from the grid material 4.
  • the lattice material side saddle attaching process (step S02) in the second modification may be any configuration as long as it is performed before the hull side saddle attaching process (step S01).
  • a support portion installation process (step S03), a tank It may be performed before the installation step (step S04) and the like, or may be performed in parallel with the support portion installation step (step S03), the tank installation step (step S04) and the like.
  • step S01 for fixing the tank structure, and the installation of the tank structure is completed.
  • the saddle 3 is fixed to the hull such as aggregate so that the grid member 4 is disposed apart from the upper deck 10.
  • the grid material side saddle mounting process (step S02) and the saddle hull side saddle mounting process (step S01) are performed after the closing process (step S06), but the grid material side saddle mounting is performed.
  • the closing step (step S06) may be performed after the step (step S02) or the saddle hull side saddle attaching step (step S01).
  • a tank structure 1B in the third modification includes a saddle 3, a lattice member 4, a support portion 5B, a tank body (cylindrical tank) 6B, and a tank cover 7. .
  • a tank structure 1B in the third modification includes a saddle 3, a lattice member 4, a support portion 5B, a tank body (cylindrical tank) 6B, and a tank cover 7. .
  • only the lower cover 23 is shown among the tank covers 7, and illustration of the upper cover 22 is abbreviate
  • the upper cover 22 may have the same shape as that of the above-described embodiment, or may have another shape according to the tank body 6B.
  • the saddle 3 is provided to project upward from the upper deck 10.
  • a plurality of saddles 3 are provided at intervals, respectively, and support the lattice material 4 from below.
  • the saddle 3 illustrated in the third modified example of this embodiment is formed to have an H-shaped cross section, and the lower end portion thereof is, for example, the ship width direction or the ship success direction attached to the lower surface of the upper deck 10. It is fixed to a strength member (not shown) etc.
  • the saddle 3 in the third modification also has a length from the upper deck 10 to the upper end thereof of about 2 m.
  • the grid material 4 is formed in a grid shape as in the above-described embodiment.
  • the grid member 4 is supported from below by the plurality of saddles 3 described above.
  • the lattice material 4 includes an outer frame portion 15, a longitudinal beam portion 16, and a transverse beam portion 17.
  • the support 5 ⁇ / b> B is installed on the upper surface 17 u of the cross beam 17 of the lattice material 4.
  • Two support portions 5B illustrated in the third modification are provided at intervals in the extending direction of the longitudinal beam portion 16.
  • the plurality of support portions 5B include a support portion main body 5Ba and a contact portion 5Bb.
  • the support portion main body 5Ba extends upward from the upper surface 17u of the cross beam portion 17, and has a recess 60 corresponding to the shape of the tank main body 6B.
  • the recess 60 in this third modification is formed in an arc shape having a radius of curvature slightly larger than the radius of the tank body 6B when viewed in the extending direction of the longitudinal beam portion 16.
  • the contact portion 5Bb is formed to abut on the tank body 6B.
  • the contact portion 5Bb is formed in an arc shape along the recess 60 as viewed from the extending direction of the vertical beam portion 16, and is formed in a plate shape spreading on both sides in the thickness direction of the support portion main body 5Ba.
  • the supporting portion 5B has a heat more than the tank main body 6B and the grid member 4 between the supporting portion main body 5Ba and the abutting portion 5Bb or between the abutting portion 5Bb and the tank main body 6B.
  • a heat shield made of a low conductivity material is provided.
  • Examples of the material having a thermal conductivity lower than that of the tank main body 6B and the lattice 4 may include synthetic resins such as phenol resin, and wood.
  • the support portion 5B suppresses the heat conduction from the tank body 6B at extremely low temperature to the grid member 4 while supporting the tank body 6B from below.
  • the tank body (tank) 6B accommodates liquefied natural gas (LNG), which is a fuel for a ship to travel, in its inside.
  • LNG liquefied natural gas
  • the tank body 6B in this embodiment is a cylindrical tank.
  • the tank main body 6B has a spherical surface in which both ends in the direction of the axis O protrude outward.
  • the tank body 6B is supported from below by the plurality of support portions 5B described above.
  • the tank body 6B is formed of a metal such as an aluminum alloy which does not break brittlely at the cryogenic temperature of the liquefied natural gas, as in the embodiment described above.
  • the tank main body 6B is covered with a heat insulating material 40 (see FIG. 8) such as polyurethane, except for a portion in contact with the support portion 5B described above.
  • illustration of the trunk top 21 is abbreviate
  • the leaked liquefied gas moves downward along the outer peripheral surface of the tank main body 6B. Then, they gather at the straight lowermost part along the axis O.
  • a pipe or the like reaching a predetermined recessed portion 50A (see FIG. 6) in a part of the lowermost portion, the liquefied gas collected at the lowermost portion is guided to the predetermined recessed portion 50A.
  • the liquefied gas can be stored in a predetermined recess 50A.
  • the tank body 6B is a cylindrical tank
  • a spherical tank may be used.
  • the “spherical tank” is not limited to a spherical shape, but has a shape in which the vicinity of the equatorial portion is formed in a cylindrical or truncated cone shape, or a shape including an elliptical curved surface or the like in at least a part of the cross section. It may be.
  • the leaked liquefied gas travels along the outer surface of the spherical tank to the lowest point, for example, by its own weight. Fall down. That is, in the case of the spherical tank, if the above-described predetermined recess 50A (see FIG. 6) is disposed immediately below the lowest point, liquefied gas can be stored in the predetermined recess 50A.
  • the present invention is not limited to the configurations of the embodiment and the modifications described above, and design changes can be made without departing from the scope of the invention.
  • the shape of the support portion 5A may be any structure capable of suppressing heat transfer between the tank main body 6A and the lattice material 4 and capable of height adjustment, and is not limited to the shape of the embodiment described above.
  • the support portion 5A is disposed at the intersection of the longitudinal beam portion 16 and the transverse beam portion 17 is exemplified.
  • the support portion 5A may be provided at a place other than where the longitudinal beam portion 16 and the transverse beam portion 17 intersect.
  • the case where fixation of lattice material 4 to saddle 3 and fixation of tank cover 7 to lattice material 4 were performed by welding was illustrated.
  • these fixing methods are not limited to welding, and may be adhesion, for example.
  • the groove portion 41 is formed in at least one of the heat insulator 40 and the tank main body 6A has been described.
  • the groove 41 may be provided as appropriate, and may be omitted.
  • a gap may be provided between the heat insulating material 40 and the tank main body 6A.
  • the opening 4a of the lattice material 4 is closed from below by the lower cover 23 .
  • the configuration is not limited to this as long as the configuration can close the opening 4a.
  • the opening 4a of the grid member 4 may be closed from above.
  • the tank bodies 6A and 6B contain the LNG.
  • LPG etc. may be sufficient as the liquefied gas which tank main body 6A, 6B accommodates.
  • the ship 2 illustrated the tanker which transports oil. However, it is not limited to this ship type. For example, other types of ships, such as a liquefied gas carrier vessel and a liquefied gas supply vessel, may be used.
  • the present invention can be applied to a deck-placement tank structure, a vessel, a method of installing and checking a tank, and a method of checking the same. According to the present invention, it is possible to improve the workability such as installation and inspection.
  • 1A, 1B Tank Structure 2 Ship 3 Saddle 4 Grid Material 4a Opening 5A, 5B Support 6A, 6B Tank Body (Tank) 6a Lower surface 7 Tank cover 8 Hull 9 Upper structure 10 Upper deck 15 Outer frame 15a Vertical member 15b Horizontal member 16 Vertical beam 17 Horizontal beam 20 Heat shield block 20a Upper surface 21 Trunk top 22 Upper cover 22a Upper wall 22b Side wall 22c Opening Edge 23 Lower cover 40 Thermal insulation 41 Groove 50, 50A Recess 52 Rib 53 Shim plate 60 Recess

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

Abstract

Structure de réservoir (1A) disposée sur un pont comprenant : une pluralité de selles (3); un élément de treillis (4) ; une pluralité de parties de support (5A) ; un réservoir (6A) ; un couvercle supérieur (22) ; et une pluralité de couvercles inférieurs (23). La pluralité de selles (3) sont pourvues d'espaces entre elles de façon à faire saillie à partir d'un pont supérieur d'un navire. L'élément de treillis (4) est supporté par au-dessous par la pluralité de selles (3) et a une forme de treillis sur une vue en plan. La pluralité de parties de support (5A) sont agencées sur une surface supérieure de l'élément de treillis (4). Le réservoir (6) est supporté par au-dessous par la pluralité de parties de support (5A) et un gaz liquéfié est logé à l'intérieur de celui-ci. Le couvercle supérieur (22) est supporté par l'élément de treillis et recouvre les côtés et la partie supérieure du réservoir. La pluralité de couvercles inférieurs (23) sont fixés de façon à fermer des ouvertures de treillis (4a) de l'élément de treillis (4), formant ainsi un espace fermé avec le couvercle supérieur (22).
PCT/JP2017/037567 2017-07-13 2017-10-17 Structure de réservoir placée sur un pont, navire, procédé d'installation de réservoir et procédé d'inspection WO2019012709A1 (fr)

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CN201780090524.6A CN110612250B (zh) 2017-07-13 2017-10-17 置于甲板上的储罐结构、船舶、储罐的安装方法及检验方法

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JP2017136911A JP6609828B2 (ja) 2017-07-13 2017-07-13 デッキ置きタンク構造、船舶、タンクの据え付け方法及び点検方法
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JP7412214B2 (ja) * 2020-02-20 2024-01-12 三菱造船株式会社 液化ガスタンク、船舶
CN114074746B (zh) * 2020-08-20 2023-03-24 江南造船(集团)有限责任公司 一种具有多向限位支撑装置的液货船
CN115056942B (zh) * 2022-07-08 2024-01-19 上海外高桥造船有限公司 船舶卫生单元的调平方法、装置、设备及存储介质
CN115807723A (zh) * 2022-12-06 2023-03-17 哈尔滨工程大学 一种船用高速柴油机辅机轻量化天然气箱

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JPS5931596U (ja) * 1982-08-25 1984-02-27 日立造船株式会社 バラストタンクの防熱構造
JP2013530865A (ja) * 2010-05-19 2013-08-01 デウ シップビルディング アンド マリーン エンジニアリング カンパニー リミテッド 甲板上部に燃料タンクを有する浮遊式構造物
JP2014162430A (ja) * 2013-02-27 2014-09-08 Mitsubishi Heavy Ind Ltd デッキ置きタンク構造およびその据え付け方法

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KR101131537B1 (ko) * 2009-04-02 2012-04-04 현대중공업 주식회사 액화가스 운반선 및 그 건조방법
KR20120014505A (ko) * 2010-08-09 2012-02-17 바칠라캐빈 (주) 캐빈 유닛의 천정 패널 시스템

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JPS5931596U (ja) * 1982-08-25 1984-02-27 日立造船株式会社 バラストタンクの防熱構造
JP2013530865A (ja) * 2010-05-19 2013-08-01 デウ シップビルディング アンド マリーン エンジニアリング カンパニー リミテッド 甲板上部に燃料タンクを有する浮遊式構造物
JP2014162430A (ja) * 2013-02-27 2014-09-08 Mitsubishi Heavy Ind Ltd デッキ置きタンク構造およびその据え付け方法

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CN110612250B (zh) 2021-12-14
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KR102246400B1 (ko) 2021-04-30
KR20190132680A (ko) 2019-11-28
JP6609828B2 (ja) 2019-11-27

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