WO2021172164A1 - Fuel tank and ship - Google Patents
Fuel tank and ship Download PDFInfo
- Publication number
- WO2021172164A1 WO2021172164A1 PCT/JP2021/006137 JP2021006137W WO2021172164A1 WO 2021172164 A1 WO2021172164 A1 WO 2021172164A1 JP 2021006137 W JP2021006137 W JP 2021006137W WO 2021172164 A1 WO2021172164 A1 WO 2021172164A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- storage
- barrier
- fuel
- fuel tank
- piping
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
- B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
- B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0221—Fuel storage reservoirs, e.g. cryogenic tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
-
- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
-
- 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
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/066—Fluid distribution for feeding engines for propulsion
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
- Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
Definitions
- This disclosure relates to a fuel tank and a ship on which the fuel tank is mounted.
- the fuel tank mounted on a ship may be provided with a storage unit for storing liquefied gas such as liquefied natural gas (LNG) and liquefied propane gas (LPG).
- a pipe for injecting liquefied gas into the storage unit and discharging the liquefied gas from the storage unit is connected to the storage unit.
- Patent Document 1 discloses a ship including a storage unit for storing liquefied gas and a pipe for circulating the liquefied gas stored in the storage unit toward the main engine.
- the storage section When mounting a fuel tank on a ship, the storage section is often placed on the saddle in consideration of heat shrinkage due to low-temperature liquefied gas. Further, in the extending direction of the pipe, it is necessary to provide a barrier that airtightly covers up to the valve (first valve) provided at the position closest to the storage portion on the pipe. A space called a tank connection space (TCS) is formed in this barrier. Even if liquefied gas leaks from the connection between the fuel tank and the first valve, it is stored in the TCS.
- TCS tank connection space
- the piping may extend downward from the bottom of the storage section. This makes it possible to utilize the gravity of the liquefied gas when discharging the liquefied gas, and it is known that the number of installed pumps can be reduced.
- the barrier in order to airtightly cover up to the first valve with the barrier as described above, the barrier also extends from the bottom of the storage portion, that is, it has a suspended structure.
- the barrier needs to be airtight.
- the barrier is also required to have a structure that prevents significant deformation even when the low-temperature and high-pressure liquefied gas leaked from the storage portion is stored.
- the present disclosure has been made in view of the above-mentioned problems, and by configuring the storage unit at a lower cost and lighter weight in a fuel tank mounted on a ship and having a pipe extending from the bottom of the storage unit. ,
- the purpose is to provide a fuel tank that can ensure more soundness.
- the fuel tank according to the present disclosure is a fuel tank mounted on a ship, and the fuel is stored in a storage portion and extends downward from the bottom of the storage portion.
- the barrier portion is installed below the storage portion in the barrier portion installation portion which is a part of the ship.
- the barrier portion can be supported from below by the barrier portion installation portion. can.
- the wall portion can be constructed at a lower cost and lighter weight than when the barrier portion is not installed in the barrier portion installation portion and is hung in the storage portion, so that the fuel tank is sounder. Sex can be ensured.
- FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is the schematic which showed the structure of the fuel tank which concerns on some embodiments of this disclosure. It is the schematic which showed the structure of the fuel tank which concerns on 1st modification of 1st Embodiment of this disclosure. It is the schematic which showed the structure of the fuel tank which concerns on the 2nd modification of 1st Embodiment of this disclosure. It is a figure which showed the structure of the barrier part which concerns on the 3rd modification of 1st Embodiment of this disclosure, and is the figure which enlarged a part of the structure of the fuel tank for the explanation of the wall part.
- the configuration of the fuel tank 1 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 and 2.
- the fuel tank 1 is mounted on the ship 100.
- the fuel tank 1 includes a storage unit 2, a piping unit 4, a first valve 6, and a barrier portion 8.
- the direction from the stern of the ship 100 to the bow is the front, and the direction from the bow to the stern of the ship 100 is the rear.
- a storage space 3 is formed inside the storage unit 2, and the fuel F is stored in the storage space 3 (see FIG. 2).
- a storage unit 2 has a cylindrical shape extending in the front-rear direction, and has a single-shell structure.
- the storage unit 2 is placed on two saddles 10A and 10B arranged side by side in the front-rear direction.
- a heat insulating material 14 is arranged between the storage unit 2 and the two saddles 10A and 10B.
- the saddles 10A and 10B are installed on the upper deck 12 (wall portion installation portion) of the hull 7 of the ship 100.
- the upper deck 12 is the uppermost deck that constitutes the main part of the hull.
- the fuel F stored in the storage unit 2 can be used for navigation of the ship 100, and liquefied gas of LNG or LPG is exemplified.
- the storage unit 2 is fixed to the rear saddle 10A (fixed saddle) located on the rear side.
- the fixing means for example, a structure in which a convex portion is provided in the lower portion of the storage portion 2 and sandwiched from the front and rear of the rear saddle 10A, a structure in which both are fixed by bolts, and the like are adopted. Further, the storage unit 2 is in contact with the front saddle 10B (contact saddle) located on the front side.
- the saddle for fixing the storage unit 2 is not limited to the rear saddle 10A, and may be the front saddle 10B.
- the fixed saddle extends from below the storage section 2 of the piping section 4 to the contact saddle in consideration of the influence of stress generated on the piping section 4 due to the displacement of the storage section 2 in the front-rear direction due to heat shrinkage. It is desirable that the saddle is close to the location.
- the piping portion 4 extends downward from the bottom portion 5 (lower wall surface) of the storage portion 2.
- the piping section 4 can connect the storage section 2 (bottom 5 of the storage section 2) and the fuel adjusting section 20.
- the fuel adjusting unit 20 performs processing such as compression, vaporization, and pressure adjustment on the fuel F supplied from the storage unit 2 (fuel tank 1), and then supplies the fuel F to an engine (not shown).
- the first valve 6 is the one closest to the storage section 2 in the extending direction D in which the piping section 4 extends from the bottom portion 5 of the storage section 2 among one or more valves provided in the piping section 4.
- the first valve 6 can adjust the flow amount of the fuel F flowing through the piping portion 4.
- the barrier portion 8 is formed in a box shape by the barrier, and a storage space 9 (tank connection space) is formed inside the barrier portion 8.
- the barrier portion 8 airtightly covers from the bottom portion 5 of the storage portion 2 to at least the first valve 6.
- the barrier portion 8 is installed below the storage portion 2 on the upper deck 12 (wall portion installation portion) which is a part of the ship 100. That is, in the first embodiment, the barrier portion 8 airtightly covers the first valve 6 and the portion of the piping portion 4 located above the upper deck 12. In the first embodiment, a part of the upper deck 12 can be made to function as a barrier of the barrier portion 8.
- the upper surface (installation surface) of the upper deck 12 facing the bottom portion 5 of the storage portion 2 at the location where the barrier portion 8 is installed can function as one surface of the box-shaped body.
- the barrier portion 8 is made of an appropriate material according to the temperature of the fuel F stored in the storage portion 2.
- the fuel F is LNG, it is composed of stainless steel, 9% nickel steel, etc., which are particularly excellent in low temperature toughness.
- the fuel F is LPG, it is composed of a low-temperature steel material or the like, which is relatively low in cost.
- the barrier portion 8 may be installed on the barrier portion installation body 13 (wall portion installation portion) in which at least a part thereof is arranged on the upper deck 12.
- the barrier portion installation body 13 is, for example, a stand installed on the upper deck 12. At this time, a part of the barrier portion installation body 13 can also function as a barrier of the barrier portion 8.
- the wall portion 8 since the wall portion 8 is installed on the upper deck 12 of the ship 100 or the wall portion installation body 13 below the storage unit 2, the wall portion 8 can be supported from below. .. Further, a part of the upper deck 12 and the barrier portion installation body 13 can be used as the barrier portion 8. Therefore, it is possible to provide the fuel tank 1 which can ensure the soundness of the storage unit 2 at a lower cost and lighter weight than when the barrier portion 8 is suspended from the storage unit 2.
- the piping unit 4 is a piping for discharging the fuel F from the storage unit 2, but the present disclosure is not limited to this embodiment.
- the piping unit 4 may be a pipe for injecting the fuel F into the storage unit 2, or may be a pipe configured to enable both injection and discharge of the fuel F into the storage unit 2.
- the two saddles 10A and 10B are installed on the upper deck 12 of the hull 7 of the ship 100, but the present disclosure is not limited to this embodiment. The same applies when at least one of the two saddles 10A and 10B is provided on the structure provided on the upper deck 12. Further, although saddles 10A and 10B have shown two cases in the first embodiment, the present disclosure is not limited to this embodiment.
- the barrier portion 8 is located between the rear saddle 10A and the front saddle 10B in the front-rear direction, but the present disclosure is not limited to this embodiment.
- the barrier portion 8 may be positioned other than between the two saddles 10A and 10B.
- the barrier portion 8 is configured to cover a single piping portion 4, but the present disclosure is not limited to this embodiment.
- the barrier portion 8 may be configured to cover a plurality of piping portions 4.
- the fuel tank 1 according to the first modification of the first embodiment of the present disclosure will be described with reference to FIG.
- the barrier portion 8 is installed on the upper deck 12, but the present disclosure is not limited to the first embodiment.
- the same components as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
- the wall portion 8 is installed on the lower deck 22 (wall portion installation portion) of the hull 7 of the ship 100.
- the lower deck 22 is a deck located below the upper deck 12.
- both the upper deck 12 and the lower deck 22 are collectively referred to as decks. That is, a part of the barrier portion 8 is inserted inside the hull 7.
- the capacity of the storage unit 2 is preferably as large as possible in order to secure the navigation distance of the ship 100, for example.
- the diameters of the first valve 6 and the piping portion 4 are also increased.
- the volume required for the storage space 9 also increases, and it is necessary to provide a large barrier portion 8.
- the volume required for the storage space 9 also changes depending on the pressure resistance and temperature resistance of the storage unit 2. In particular, when the storage unit 2 has a high pressure resistance, when the fuel F leaks. Since the amount of leakage may increase, it is necessary to further increase the volume of the storage space 9.
- the heights (vertical dimensions) of the two saddles 10A and 10B are increased in order to increase the size of the storage portion 2 and the barrier portion 8, that is, when the storage portion 2 is raised, for example, the hull 7 is shaken. At that time, the acceleration of the storage unit 2 in the ship width direction becomes large. Therefore, conventionally, in addition to the two saddles 10A and 10B, another support member for supporting the storage unit 2 may be provided, or the two saddles 10A and 10B may be reinforced. However, according to the configuration of the first modification, even if the storage portion 2 and the barrier portion 8 are enlarged, a part of the barrier portion 8 is inserted into the hull 7, so that the storage portion 2 is not raised.
- the barrier portion 8 is installed on the lower deck 22, but the present disclosure is not limited to this embodiment. The same applies when it is installed on a wall-breaking portion installation body (wall-prevention portion installation portion) (not shown) provided on the lower deck 22.
- An installation stand or the like is exemplified as a wall installation body. Further, a part of the barrier of the barrier portion 8 is similarly established even when the lower deck 22 or the barrier portion installation body is used.
- the fuel tank 1 according to the second modification of the first embodiment of the present disclosure will be described with reference to FIG.
- the second modified example further limits the configuration of the barrier portion 8 described in the first modified example, but the other configurations are the same as the configurations described in the first modified example.
- those having the same constituent requirements as the first modification are designated by the same reference numerals, and detailed description thereof will be omitted.
- the second modification may further limit the configuration of the barrier portion 8 described in the first embodiment.
- the barrier portion 8 is configured such that the area of the cross section (hereinafter referred to as the cross section S) orthogonal to the vertical direction is the smallest in the connecting portion 24 in which the barrier portion 8 and the storage portion 2 are connected. Will be done.
- the barrier portion 8 is composed of a small diameter portion 8a and a large diameter portion 8b.
- the small diameter portion 8a is a portion that is connected to the bottom portion 5 of the storage portion 2 and extends downward from the bottom portion 5 of the storage portion 2 while maintaining the shape of the cross section S of the small diameter portion 8a.
- the large-diameter portion 8b is a portion that expands the area of the cross section S of the small-diameter portion 8a and extends downward from the tip of the small-diameter portion 8a.
- the stress generated at the connection portion between the storage portion 2 and the barrier portion 8 can be reduced.
- the present disclosure is not limited to the second modification as long as the area of the cross section S is the smallest at the connecting portion 24.
- the small diameter portion 8a may be configured such that the area of the cross section S increases toward the bottom, such as in a tapered shape.
- the fuel tank 1 according to the third modification of the first embodiment of the present disclosure will be described with reference to FIG.
- the third modified example further limits the configuration of the barrier portion 8 described in the second modified example, but the other configurations are the same as the configurations described in the second modified example.
- the third modification may further limit the configuration of the barrier portion 8 described in the first embodiment and the first modification.
- the barrier portion 8 is divided into an upper barrier portion 26 and a lower barrier portion 28 located below the upper barrier portion 26.
- the small diameter portion 8a is divided into an upper portion 8c and a lower diameter portion 8d
- the upper portion 8c of the small diameter portion 8a is the upper barrier portion 26
- the lower diameter portion 8a and the large diameter portion 8b are the lower barrier portion. It is configured as a part 28. That is, the upper wall portion 26 (the upper portion 8c of the small diameter portion 8a) has a smaller cross-sectional area orthogonal to the vertical direction than a part of the lower barrier portion 28 (large diameter portion 8b).
- the piping portion 4 is formed with a first valve flange portion 27 for attaching the first valve 6 described above, which is located inside the barrier portion 8.
- the first valve flange portion 27 of the piping portion 4 can be positioned below the second flange portion 32.
- the flange portion 27 for the first valve of the piping portion 4 is located in the large diameter portion 8b of the barrier portion 8.
- the portion of the piping portion 4 on the upstream side in the extending direction D from the flange portion 27 for the first valve will be referred to as the upstream piping portion 4a.
- the small diameter portion 8a maintains the shape of the cross section S, but the upper portion 8c and the lower portion 8d of the small diameter portion 8a may have different cross-sectional shapes.
- the upper barrier portion 26 may be smaller than the area of the smallest cross section of the cross sections orthogonal to the vertical direction of the lower barrier portion 28.
- the outer diameter of the first valve flange portion 27 may be equal to or larger than the inner diameter of the lower portion 8d of the small diameter portion 8a of the barrier portion 8.
- the first flange portion 30 is formed at the lower end portion of the upper barrier portion 26, and the second flange portion 32 is formed at the upper end portion of the lower barrier portion 28. Then, the second flange portion 32 is fixed to the first flange portion 30 by fastening the first flange portion 30 and the second flange portion 32 with a fastening member such as a bolt 33.
- the position where the first flange portion 30 is formed is not limited to the lower end portion of the upper barrier portion 26.
- the first flange portion 30 is formed at an arbitrary position of the upper barrier portion 26.
- the position where the second flange portion 32 is formed is not limited to the upper end portion of the lower barrier portion 28.
- the second flange portion 32 is formed at an arbitrary position of the lower barrier portion 28.
- the upper barrier portion 26 and the lower barrier portion 28 can be easily separated. Therefore, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the piping portion 4, the first valve 6 and the barrier portion 8 with respect to the storage portion 2.
- the first valve flange portion 27 of the piping portion 4 below the second flange portion 32, it is possible to increase the maintenance efficiency of the first valve 6.
- the cross section S of the upper portion 8c of the small diameter portion 8a can be reduced to near the cross section of the piping portion 4, the stress generated at the connection portion between the storage portion 2 and the barrier portion 8 can be reduced as much as possible.
- the fuel tank 1 according to the fourth modification of the first embodiment of the present disclosure will be described with reference to FIG. 7.
- the fourth modified example further limits the configuration of the barrier portion 8 described in the third modified example, but the other configurations are the same as the configurations described in the third modified example.
- a joint 34 that can be expanded and contracted in the vertical direction is provided between the first flange portion 30 and the second flange portion 32.
- the joint 34 is, for example, a bellows having a bellows shape in which a plurality of mountain folds 35 and valley folds 36 are alternately formed.
- the upper end portion of the joint 34 is fastened to the first flange portion 30 by a fastening member such as a bolt 38.
- the lower end of the joint 34 is fastened to the second flange 32 by a fastening member such as a bolt 40.
- the joint 34 is made of a metal, an organic material (eg, rubber, resin) or the like.
- the displacement generated in the lower wall portion 28 due to the hull shaking or the like is absorbed by the joint 34. Therefore, the stress generated at the connection point between the storage portion 2 and the barrier portion 8 can be further reduced. Further, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the piping portion 4, the first valve 6 and the barrier portion 8 with respect to the storage portion 2.
- the joint 34 is not limited to the bellows structure. Other means may be used as long as it is a stretchable joint such as a sleeve type telescopic pipe joint.
- the fuel tank 1 according to the fifth modification of the first embodiment of the present disclosure will be described with reference to FIG.
- the fifth modified example further limits the configuration of the piping portion 4 described in the fourth modified example, but the other configurations are the same as the configurations described in the fourth modified example.
- the fifth modification may further limit the configuration of the piping portion 4 described in the first embodiment and the first to third modifications.
- one end 42 of the piping unit 4 on the storage unit 2 side is located in the storage unit 2 (inside the storage space 3).
- the airtight flange portion 44 formed at one end 42 of the piping portion 4 is configured so that an airtightness test flange (not shown) that can make the storage space 3 airtight can be attached and detached.
- the airtight flange portion 44 is configured to be attached with a first strainer 45 configured so that foreign matter mixed in the fuel F can be removed by the flow of the fuel F.
- the first strainer 45 is fastened to the airtight flange portion 44 by a fastening member such as a bolt 47.
- the first strainer 45 may be directly attached to one end 42 of the piping portion 4.
- one end 42 of the piping portion 4 is located in the storage portion 2, even if particulate foreign matter is mixed in the fuel F, it is inserted into the storage portion 2.
- a part of the piping section 4 is blocking the movement of foreign matter in the storage section 2, and it is possible to prevent the foreign matter from being discharged from the storage section 2.
- the first valve 6 is often attached to the flange portion 27 for the first valve. Then, after the first valve 6 is attached, the airtightness of the upstream piping portion 4a is tested. This airtightness test is performed by pressurizing the inside of the upstream piping portion 4a with a gas pumped by a pump or the like, but since the upstream piping portion 4a communicates with the storage space 3, the conventional airtightness test is performed. Then, it was necessary to inject gas into the entire storage space 3, which took a lot of time.
- the airtightness test flange by attaching the airtightness test flange to the airtightness flange portion 44 at the time of the airtightness test, the airtightness of the upstream piping portion 4a is tested without injecting gas into the storage space 3. can do. Therefore, the time required to perform the airtightness test can be significantly reduced.
- the first strainer 45 is attached to the airtight flange portion 44, when the fuel F is discharged from the storage portion 2, foreign matter is discharged from the storage portion 2 together with the fuel F. Can be suppressed.
- the fuel tank 1 according to the sixth modification of the first embodiment of the present disclosure will be described with reference to FIG.
- the sixth modification further limits the configuration of the bottom portion 5 of the storage unit 2 described in the fifth modification, but the other configurations are the same as those described in the fifth modification.
- the sixth modification may further limit the configuration of the bottom portion 5 of the storage unit 2 described in the first embodiment and the first to fourth modifications.
- the bottom portion 5 of the storage portion 2 is provided with a recessed portion 50 for partitioning the depressed space 48 by sinking from a part 46a of the inner surface 46 of the bottom portion 5 of the storage portion 2.
- One end 42 of is located in the depressed space 48.
- the airtight flange portion 44 and the first strainer 45 are also located in the depressed space 48.
- the depressed portion 50 includes a lower wall portion 52 that surrounds the depressed space 48 from below, and a side wall portion 54 that extends upward from the peripheral edge of the lower wall portion 52 and surrounds the depressed space 48 from a direction intersecting the vertical direction. , Equipped with.
- the lower wall portion 52 is penetrated by the piping portion 4.
- An upper barrier portion 26 is connected to the side wall portion 54, and a first flange portion 30 is formed on the outer peripheral edge of the upper barrier portion 26.
- one end 42 of the piping portion 4 When one end 42 of the piping portion 4 is configured to be located in the storage portion 2, the water level of the fuel F capable of discharging the fuel F from the storage portion 2 rises. Therefore, not all the fuel F can be discharged from the storage unit 2, and a part of the fuel F may remain in the storage unit 2.
- the configuration of the sixth modification since one end 42 of the piping portion 4 is located in the depressed space 48 partitioned by being depressed from a part 46a of the inner surface 46 of the bottom portion 5, the fuel F Most of the fuel can be discharged from the storage unit 2, and the amount of fuel F remaining in the storage unit 2 can be made very small.
- a second strainer 56 is further configured to cover the depressed space 48 from above and remove foreign matter mixed in the fuel F by the flow of the fuel F. It may be included.
- a second strainer flange portion 58 is formed on the inner surface of the side wall portion 54. Then, the second strainer 56 is fixed on the second strainer flange portion 58 by fastening the second strainer 56 and the second strainer flange portion 58 with a fastening member such as a bolt 60.
- the second strainer 56 since the second strainer 56 covers the depressed space 48 from above, it prevents foreign matter from moving to the depressed space 48 when the fuel F is discharged from the storage unit 2, and the storage unit 2 It is possible to prevent foreign matter from being discharged together with the fuel F. If the depressed portion 50 for partitioning the depressed space 48 is provided at the bottom 5 of the storage portion 2, the second strainer 56 can be provided so as to cover the depressed space 48 from above. It is not limited to another embodiment of the sixth modification. That is, the airtight flange portion 44 and the first strainer 45 are not indispensable configurations for providing the second strainer 56.
- the fuel tank (1) is a fuel tank mounted on a ship (100), and has a storage portion (2) for storing fuel (F) and a bottom portion (5) of the storage portion. ), And a valve (6) first provided in the pipe portion in the direction in which the pipe portion extends from the bottom of the storage portion to the pipe portion (4) through which the fuel flows downward.
- a barrier portion (8) that airtightly covers from the bottom portion (5) of the storage portion to at least the valve is provided, and the barrier portion is below the storage portion and is a part of the ship. It is installed in the installation section (12, 13, 22).
- the wall portion is installed below the storage portion and at the wall portion installation portion which is a part of the ship, so that the barrier portion can be supported from below.
- the wall portion can be constructed at a lower cost and lighter weight than when the barrier portion is not installed in the barrier portion installation portion and is hung in the storage portion, so that the fuel tank is sounder. Sex can be ensured.
- the barrier portion installation portion includes an installation surface facing the bottom portion of the storage portion, and a part of the barrier portion is the installation. It consists of faces.
- a part of the barrier portion installation portion can function as the barrier portion.
- the barrier portion installation portion is a deck (12, 22).
- the storage unit is a plurality of saddles (10A, 10B) installed in the barrier installation unit.
- the plurality of saddles include a fixed saddle (10A) fixed to the storage portion and an abutting saddle (10B) abutting the storage portion, and the piping portion is the same. It extends downward from the bottom of the storage section, which is closer to the fixed saddle than the tangent saddle.
- the displacement of the bottom of the storage portion is smaller when it is closer to the fixed saddle than to the contact saddle, so that the stress generated in the piping portion can be reduced.
- the barrier portion has a cross-sectional area orthogonal to the vertical direction of the barrier portion and the storage portion. It is configured to be the smallest at the connection portion (24) to which and is connected.
- the barrier portion is located below the upper barrier portion (26) and the upper barrier portion. It is divided into two parts, a lower barrier portion (28), a first flange portion (30) is formed on the upper barrier portion, and a second flange portion (32) is formed on the lower barrier portion. One flange portion is configured to be fixed to the second flange portion.
- the upper barrier portion and the lower barrier portion can be easily separated. Therefore, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the barrier portion.
- the upper barrier portion has a smaller cross-sectional area orthogonal to the lower barrier portion in the vertical direction.
- the cross section of the upper barrier portion can be reduced to near the cross section of the piping portion, so that the stress generated at the connection portion between the storage portion and the barrier portion can be reduced as much as possible. ..
- a stretchable joint (34) is provided between the first flange portion and the second flange portion. Be done.
- the displacement generated in the lower wall portion due to the hull shaking or the like is absorbed by the joint, so that the stress generated at the connection portion between the storage portion and the barrier portion can be further reduced.
- one end (42) of the piping portion on the storage portion side is located in the storage portion. ..
- the piping portion is attached to one end of the piping portion on the storage portion side so that foreign matter mixed in the fuel can be removed by the flow of the fuel.
- the first strainer since the first strainer is attached to one end of the piping portion, it is possible to suppress the discharge of foreign matter together with the fuel from the storage portion when the fuel is discharged from the storage portion. Can be done. Alternatively, when injecting fuel into the storage unit, it is possible to prevent foreign matter from being injected into the storage unit together with the fuel from the piping unit.
- the bottom portion of the storage portion is recessed from a part (46a) of the inner surface (46) of the bottom portion.
- a recessed portion (50) for partitioning the depressed space (48) is provided, and one end of the piping portion on the storage portion side is located in the depressed space.
- one end of the piping section is configured to be located inside the storage section, the water level of fuel that can discharge fuel from the storage section rises. Therefore, not all the fuel can be discharged from the storage unit, and a part of the fuel may remain in the storage unit.
- one end of the piping portion is located in the depressed space partitioned by being depressed from a part of the inner surface of the bottom portion, most of the fuel is stored from the storage portion. It can be discharged and the amount of fuel remaining in the storage can be reduced.
- a second strainer configured to cover the depressed space from above and remove foreign matter mixed in the fuel by the flow of the fuel (12). 56) is included.
- the second strainer covers the depressed space from above, so that when the fuel is discharged from the storage portion, foreign matter is prevented from moving to the depressed space, and the fuel is discharged from the storage portion. At the same time, it is possible to suppress the discharge of foreign matter.
- when injecting fuel into the storage unit it is possible to prevent foreign matter from entering a space other than the depressed space in the storage unit.
- the ship (100) is equipped with the fuel tank according to any one of (1) to (12) above.
- the storage section in a fuel tank in which a pipe extends from the bottom of the storage section, the storage section can be constructed at a lower cost and lighter weight to ensure more soundness. Ships can be provided.
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Abstract
In the present invention, a fuel tank mounted in a ship comprises: a storage unit in which fuel is stored; a piping unit that extends downward from the bottom of the storage unit, fuel circulating in the piping unit; a valve initially provided to the piping unit in the direction in which the piping unit extends from the bottom of the storage unit; and a protective wall part that enables airtight coverage to be provided from the bottom of the storage unit to at least the valve, the protective wall part being installed below the storage unit in a protective-wall-part-installation part, which is a part of the ship.
Description
本開示は、燃料タンク、及び燃料タンクが搭載される船舶に関する。
This disclosure relates to a fuel tank and a ship on which the fuel tank is mounted.
船舶に搭載される燃料タンクには、液化天然ガス(LNG)や液化プロパンガス(LPG)等の液化ガスを貯蔵するための貯蔵部が設けられる場合がある。貯蔵部には、貯蔵部内に液化ガスを注入したり、貯蔵部内から液化ガスを排出したりするための配管が接続されている。特許文献1には、液化ガスを貯蔵する貯蔵部と、貯蔵部に貯蔵された液化ガスが主機に向かって流通する配管と、を備える船舶が開示されている。
The fuel tank mounted on a ship may be provided with a storage unit for storing liquefied gas such as liquefied natural gas (LNG) and liquefied propane gas (LPG). A pipe for injecting liquefied gas into the storage unit and discharging the liquefied gas from the storage unit is connected to the storage unit. Patent Document 1 discloses a ship including a storage unit for storing liquefied gas and a pipe for circulating the liquefied gas stored in the storage unit toward the main engine.
船舶に燃料タンクを搭載する場合には、低温の液化ガスによる熱収縮を考慮して、貯蔵部はサドル上に載置することが多い。また、配管の延在方向において、配管上で最も貯蔵部に近い位置に設けられる弁(第1弁)までを気密に覆う防壁を設ける必要がある。この防壁内にはタンクコネクションスペース(TCS)と呼ばれる空間が形成されている。万一、燃料タンクと第1弁の接続部から液化ガスが漏洩したとしても、TCS内に格納される。
When mounting a fuel tank on a ship, the storage section is often placed on the saddle in consideration of heat shrinkage due to low-temperature liquefied gas. Further, in the extending direction of the pipe, it is necessary to provide a barrier that airtightly covers up to the valve (first valve) provided at the position closest to the storage portion on the pipe. A space called a tank connection space (TCS) is formed in this barrier. Even if liquefied gas leaks from the connection between the fuel tank and the first valve, it is stored in the TCS.
配管は、貯蔵部の底部から下方に向かって延在している場合がある。これにより、液化ガスの排出時に液化ガスの重力を利用することが可能となり、ポンプの設置台数を削減できることが知られている。この場合、上述したように第1弁までを防壁で気密に覆うために、防壁も貯蔵部の底部から延在する、即ち吊り下げ構造となることとなる。防壁は気密性を担保する必要がある。また、防壁は貯蔵部から漏洩した低温・高圧の液化ガスを格納した際にも有意な変形を防止する構造とすることも求められる。このためには、防壁は肉厚を厚くすると共に防壁同士を堅固に組み合わせる必要がある、また、貯蔵部の下方にTCSを設ける空間が必要となることで、サドルを固定する床面等から貯蔵部の載置位置までの高さが高くなる。貯蔵部の大容量化に伴い、TCSの容量も大きくする必要があるため、前記高さは更に高くする必要もある。船体動揺に伴い貯蔵部等が受ける加速度は、前記高さが高いほど大きくなる。よって、貯蔵部や配管等の健全性を確保するためには、貯蔵部の支持構造をより強靱にする必要がある。つまり、特許文献1のような構成において求められる対応は、燃料タンクの高コスト化、重量化に繋がることとなる。
The piping may extend downward from the bottom of the storage section. This makes it possible to utilize the gravity of the liquefied gas when discharging the liquefied gas, and it is known that the number of installed pumps can be reduced. In this case, in order to airtightly cover up to the first valve with the barrier as described above, the barrier also extends from the bottom of the storage portion, that is, it has a suspended structure. The barrier needs to be airtight. In addition, the barrier is also required to have a structure that prevents significant deformation even when the low-temperature and high-pressure liquefied gas leaked from the storage portion is stored. For this purpose, it is necessary to increase the wall thickness of the barrier and to firmly combine the barriers with each other, and since a space for providing a TCS is required below the storage portion, it is stored from the floor surface or the like where the saddle is fixed. The height to the mounting position of the part becomes higher. As the capacity of the storage unit is increased, the capacity of the TCS also needs to be increased, so that the height needs to be further increased. The higher the height, the greater the acceleration received by the storage unit or the like due to the shaking of the hull. Therefore, in order to ensure the soundness of the storage section and piping, it is necessary to make the support structure of the storage section stronger. That is, the measures required in the configuration as in Patent Document 1 lead to higher cost and weight of the fuel tank.
本開示は、上述の課題に鑑みてなされたものであって、船舶に搭載され、貯蔵部の底部から配管が延在する燃料タンクにおいて、より廉価で且つ軽量にて貯蔵部を構成することで、より健全性を確保することができる燃料タンクを提供することを目的とする。
The present disclosure has been made in view of the above-mentioned problems, and by configuring the storage unit at a lower cost and lighter weight in a fuel tank mounted on a ship and having a pipe extending from the bottom of the storage unit. , The purpose is to provide a fuel tank that can ensure more soundness.
上記目的を達成するため、本開示に係る燃料タンクは、船舶に搭載される燃料タンクであって、燃料が貯蔵される貯蔵部と、前記貯蔵部の底部から下方に延在し、前記燃料が流通する配管部と、前記貯蔵部の前記底部から前記配管部が延在する方向において最初に前記配管部に設けられる弁と、前記貯蔵部の前記底部から少なくとも前記弁までを気密可能に覆う防壁部と、を備え、前記防壁部は、前記貯蔵部よりも下方で、前記船舶の一部である防壁部設置部に設置される。
In order to achieve the above object, the fuel tank according to the present disclosure is a fuel tank mounted on a ship, and the fuel is stored in a storage portion and extends downward from the bottom of the storage portion. A barrier that airtightly covers the circulating piping, the valve that is first provided in the piping in the direction in which the piping extends from the bottom of the storage, and at least the valve from the bottom of the storage. The barrier portion is installed below the storage portion in the barrier portion installation portion which is a part of the ship.
本開示の燃料タンクによれば、防壁部は、貯蔵部よりも下方で、船舶の一部である防壁部設置部に設置されるので、防壁部を防壁部設置部で下方から支持することができる。このため、防壁部が防壁部設置部に設置されず、貯蔵部に吊り下げられる場合と比較して、廉価で且つ軽量にて防壁部を構成することが可能となるため、より燃料タンクの健全性を確保することができる。
According to the fuel tank of the present disclosure, since the wall portion is installed below the storage portion and at the wall portion installation portion which is a part of the ship, the barrier portion can be supported from below by the barrier portion installation portion. can. For this reason, the wall portion can be constructed at a lower cost and lighter weight than when the barrier portion is not installed in the barrier portion installation portion and is hung in the storage portion, so that the fuel tank is sounder. Sex can be ensured.
以下、本開示の実施の形態による燃料タンク、及びこの燃料タンクが搭載される船舶について、図面に基づいて説明する。かかる実施の形態は、本開示の一態様を示すものであり、この開示を限定するものではなく、本開示の技術的思想の範囲内で任意に変更可能である。
Hereinafter, the fuel tank according to the embodiment of the present disclosure and the ship on which the fuel tank is mounted will be described with reference to the drawings. Such an embodiment shows one aspect of the present disclosure, does not limit the disclosure, and can be arbitrarily modified within the scope of the technical idea of the present disclosure.
<第1実施形態>
図1及び図2を参照して、本開示の第1実施形態に係る燃料タンク1の構成について説明する。図1に示すように、燃料タンク1は、船舶100に搭載されるものである。この燃料タンク1は、貯蔵部2と、配管部4と、第1弁6と、防壁部8と、を備える。本開示では、船舶100の船尾から船首に向かう方向を前方とし、船舶100の船首から船尾に向かう方向を後方とする。 <First Embodiment>
The configuration of thefuel tank 1 according to the first embodiment of the present disclosure will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the fuel tank 1 is mounted on the ship 100. The fuel tank 1 includes a storage unit 2, a piping unit 4, a first valve 6, and a barrier portion 8. In the present disclosure, the direction from the stern of the ship 100 to the bow is the front, and the direction from the bow to the stern of the ship 100 is the rear.
図1及び図2を参照して、本開示の第1実施形態に係る燃料タンク1の構成について説明する。図1に示すように、燃料タンク1は、船舶100に搭載されるものである。この燃料タンク1は、貯蔵部2と、配管部4と、第1弁6と、防壁部8と、を備える。本開示では、船舶100の船尾から船首に向かう方向を前方とし、船舶100の船首から船尾に向かう方向を後方とする。 <First Embodiment>
The configuration of the
貯蔵部2は、内部に貯蔵空間3が形成され、この貯蔵空間3内に燃料Fが貯蔵されるものである(図2参照)。このような貯蔵部2は、前後方向に延びる円筒形状を有しており、一重殻構造で構成されている。貯蔵部2は、前後方向に沿って並んで配置される2つのサドル10A,10Bに載置されている。貯蔵部2と2つのサドル10A,10Bとの間には、断熱材14が配置されている。サドル10A,10Bは、船舶100の船体7の上甲板12(防壁部設置部)上に設置されている。ここで上甲板12とは、船体の主要部を構成する最上層の全通甲板である。貯蔵部2に貯蔵される燃料Fは船舶100の航行のために使用可能なものであり、LNGやLPGの液化ガスが例示される。
A storage space 3 is formed inside the storage unit 2, and the fuel F is stored in the storage space 3 (see FIG. 2). Such a storage unit 2 has a cylindrical shape extending in the front-rear direction, and has a single-shell structure. The storage unit 2 is placed on two saddles 10A and 10B arranged side by side in the front-rear direction. A heat insulating material 14 is arranged between the storage unit 2 and the two saddles 10A and 10B. The saddles 10A and 10B are installed on the upper deck 12 (wall portion installation portion) of the hull 7 of the ship 100. Here, the upper deck 12 is the uppermost deck that constitutes the main part of the hull. The fuel F stored in the storage unit 2 can be used for navigation of the ship 100, and liquefied gas of LNG or LPG is exemplified.
貯蔵部2は、後方側に位置する後方サドル10A(固定サドル)に固定されている。本固定手段は、例えば、貯蔵部2の下部に凸部を設けて後方サドル10Aの前後から挟み込む構造や、両者をボルトによって固定する構造などが採られる。また、貯蔵部2は、前方側に位置する前方サドル10B(当接サドル)と当接している。尚、貯蔵部2を固定するサドルは、後方サドル10Aに限定されず、前方サドル10Bでも構わない。固定サドルは、熱収縮に伴う前後方向への貯蔵部2の変位に伴い配管部4に生じる応力の影響を考慮して、当接サドルよりも配管部4の貯蔵部2の下方から延在する箇所に近いサドルであることが望ましい。
The storage unit 2 is fixed to the rear saddle 10A (fixed saddle) located on the rear side. As the fixing means, for example, a structure in which a convex portion is provided in the lower portion of the storage portion 2 and sandwiched from the front and rear of the rear saddle 10A, a structure in which both are fixed by bolts, and the like are adopted. Further, the storage unit 2 is in contact with the front saddle 10B (contact saddle) located on the front side. The saddle for fixing the storage unit 2 is not limited to the rear saddle 10A, and may be the front saddle 10B. The fixed saddle extends from below the storage section 2 of the piping section 4 to the contact saddle in consideration of the influence of stress generated on the piping section 4 due to the displacement of the storage section 2 in the front-rear direction due to heat shrinkage. It is desirable that the saddle is close to the location.
配管部4は、貯蔵部2の底部5(下壁面)から下方に延在する。配管部4は、貯蔵部2(貯蔵部2の底部5)と燃料調整部20とを接続可能となっている。燃料調整部20は、貯蔵部2(燃料タンク1)から供給された燃料Fに、圧縮、気化、調圧などの処理を行った後、不図示のエンジンに供給する。
The piping portion 4 extends downward from the bottom portion 5 (lower wall surface) of the storage portion 2. The piping section 4 can connect the storage section 2 (bottom 5 of the storage section 2) and the fuel adjusting section 20. The fuel adjusting unit 20 performs processing such as compression, vaporization, and pressure adjustment on the fuel F supplied from the storage unit 2 (fuel tank 1), and then supplies the fuel F to an engine (not shown).
第1弁6は、配管部4に設けられた一つ以上の弁のうち、貯蔵部2の底部5から配管部4が延在する延在方向Dにおいて最も貯蔵部2に近いものである。第1弁6は、配管部4を流通する燃料Fの流通量を調節可能である。
The first valve 6 is the one closest to the storage section 2 in the extending direction D in which the piping section 4 extends from the bottom portion 5 of the storage section 2 among one or more valves provided in the piping section 4. The first valve 6 can adjust the flow amount of the fuel F flowing through the piping portion 4.
防壁部8は、防壁により箱状に形成されており、その内部に格納空間9(タンクコネクションスペース)を形成している。防壁部8は、貯蔵部2の底部5から少なくとも第1弁6までを気密可能に覆っている。防壁部8は、貯蔵部2よりも下方で、船舶100の一部である上甲板12(防壁部設置部)に設置される。つまり、第1実施形態では、防壁部8は、第1弁6と、配管部4のうち上甲板12より上方に位置する部分を気密可能に覆っている。第1実施形態においては、上甲板12の一部を防壁部8の防壁として機能させることもできる。具体的には、防壁部8を設置した箇所における貯蔵部2の底部5に面する上甲板12の上面(設置面)を箱状体の一面として機能させることができる。また、この防壁部8は、貯蔵部2に貯蔵される燃料Fの温度に応じて適切な材料で構成されている。例えば、燃料FがLNGである場合には特に低温靭性に優れるステレンス鋼、9%ニッケル鋼などで構成される。また、燃料FがLPGである場合には比較的低コストである低温用鋼材などで構成される。尚、図3に示すように、幾つかの実施形態では、防壁部8は少なくともその一部を上甲板12に配した防壁部設置体13(防壁部設置部)に設置しても構わない。この防壁部設置体13は、例えば、上甲板12の上に設置した台である。この際、防壁部設置体13の一部を防壁部8の防壁として機能させることもできる。
The barrier portion 8 is formed in a box shape by the barrier, and a storage space 9 (tank connection space) is formed inside the barrier portion 8. The barrier portion 8 airtightly covers from the bottom portion 5 of the storage portion 2 to at least the first valve 6. The barrier portion 8 is installed below the storage portion 2 on the upper deck 12 (wall portion installation portion) which is a part of the ship 100. That is, in the first embodiment, the barrier portion 8 airtightly covers the first valve 6 and the portion of the piping portion 4 located above the upper deck 12. In the first embodiment, a part of the upper deck 12 can be made to function as a barrier of the barrier portion 8. Specifically, the upper surface (installation surface) of the upper deck 12 facing the bottom portion 5 of the storage portion 2 at the location where the barrier portion 8 is installed can function as one surface of the box-shaped body. Further, the barrier portion 8 is made of an appropriate material according to the temperature of the fuel F stored in the storage portion 2. For example, when the fuel F is LNG, it is composed of stainless steel, 9% nickel steel, etc., which are particularly excellent in low temperature toughness. Further, when the fuel F is LPG, it is composed of a low-temperature steel material or the like, which is relatively low in cost. As shown in FIG. 3, in some embodiments, the barrier portion 8 may be installed on the barrier portion installation body 13 (wall portion installation portion) in which at least a part thereof is arranged on the upper deck 12. The barrier portion installation body 13 is, for example, a stand installed on the upper deck 12. At this time, a part of the barrier portion installation body 13 can also function as a barrier of the barrier portion 8.
第1実施形態によれば、防壁部8は、貯蔵部2よりも下方で、船舶100の上甲板12または防壁部設置体13に設置されるので、防壁部8を下方から支持することができる。更に、上甲板12や防壁部設置体13の一部を防壁部8として利用することもできる。このため、防壁部8が貯蔵部2に吊り下げられる場合よりも、廉価で且つ軽量にて貯蔵部2の健全性を確保することができる燃料タンク1を提供することが可能となる。
According to the first embodiment, since the wall portion 8 is installed on the upper deck 12 of the ship 100 or the wall portion installation body 13 below the storage unit 2, the wall portion 8 can be supported from below. .. Further, a part of the upper deck 12 and the barrier portion installation body 13 can be used as the barrier portion 8. Therefore, it is possible to provide the fuel tank 1 which can ensure the soundness of the storage unit 2 at a lower cost and lighter weight than when the barrier portion 8 is suspended from the storage unit 2.
尚、第1実施形態では、配管部4は、貯蔵部2から燃料Fを排出するための配管であったが、本開示はこの実施形態に限定されない。配管部4は、貯蔵部2に燃料Fを注入するための配管であってもよいし、貯蔵部2への燃料Fの注入・排出の両方が可能に構成される配管であってもよい。また、第1実施形態では2つのサドル10A,10Bは、船舶100の船体7の上甲板12上に設置されているとしたが、本開示はこの実施形態に限定されない。上甲板12上に設けられた構造物の上に2つのサドル10A,10Bの少なくとも一方が設けられる場合も同様に成り立つ。更に、第1実施形態ではサドル10A,10Bは2つの場合を示したが、本開示はこの実施形態に限定されない。貯蔵部2の前後方向寸法に応じて任意の員数を設けることでも構わない。更に、第1実施形態では、防壁部8は、前後方向において、後方サドル10Aと前方サドル10Bとの間に位置しているとしたが、本開示はこの実施形態に限定されない。防壁部8は2つのサドル10A,10Bの間以外に位置させても構わない。更に、第1実施形態では、防壁部8は、単一の配管部4を覆うように構成されているとしたが、本開示はこの実施形態に限定されない。防壁部8は、複数の配管部4を覆うように構成されてもよい。
In the first embodiment, the piping unit 4 is a piping for discharging the fuel F from the storage unit 2, but the present disclosure is not limited to this embodiment. The piping unit 4 may be a pipe for injecting the fuel F into the storage unit 2, or may be a pipe configured to enable both injection and discharge of the fuel F into the storage unit 2. Further, in the first embodiment, the two saddles 10A and 10B are installed on the upper deck 12 of the hull 7 of the ship 100, but the present disclosure is not limited to this embodiment. The same applies when at least one of the two saddles 10A and 10B is provided on the structure provided on the upper deck 12. Further, although saddles 10A and 10B have shown two cases in the first embodiment, the present disclosure is not limited to this embodiment. An arbitrary number of members may be provided according to the dimensions of the storage unit 2 in the front-rear direction. Further, in the first embodiment, the barrier portion 8 is located between the rear saddle 10A and the front saddle 10B in the front-rear direction, but the present disclosure is not limited to this embodiment. The barrier portion 8 may be positioned other than between the two saddles 10A and 10B. Further, in the first embodiment, the barrier portion 8 is configured to cover a single piping portion 4, but the present disclosure is not limited to this embodiment. The barrier portion 8 may be configured to cover a plurality of piping portions 4.
(第1変形例)
図4を参照して、本開示の第1実施形態の第1変形例に係る燃料タンク1について説明する。第1実施形態では、防壁部8は、上甲板12上に設置されていたが、本開示は第1実施形態に限定されない。第1変形例において、第1実施形態の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (First modification)
Thefuel tank 1 according to the first modification of the first embodiment of the present disclosure will be described with reference to FIG. In the first embodiment, the barrier portion 8 is installed on the upper deck 12, but the present disclosure is not limited to the first embodiment. In the first modification, the same components as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
図4を参照して、本開示の第1実施形態の第1変形例に係る燃料タンク1について説明する。第1実施形態では、防壁部8は、上甲板12上に設置されていたが、本開示は第1実施形態に限定されない。第1変形例において、第1実施形態の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (First modification)
The
図4に示すように、防壁部8は、船舶100の船体7の下方甲板22(防壁部設置部)上に設置されている。ここで下方甲板22とは、上甲板12よりも下層に位置する甲板である。便宜上、上甲板12と下方甲板22を共に甲板と総称する。つまり、防壁部8の一部が船体7の内部に挿入されている。貯蔵部2の容量は、例えば、船舶100の航行距離を確保するために可能な限り大きくすることが好ましい。この際、第1弁6や配管部4の配管直径なども大型化することとなる。この場合、格納空間9に要求される容積も大きくなり、大型の防壁部8を設ける必要がある。尚、格納空間9に要求される容積は、貯蔵部2の有する耐圧性や耐温性によっても変化する、特に、貯蔵部2が高い耐圧性を有する場合には、燃料Fが漏洩した際の漏洩量が多くなる可能性があるため、格納空間9の容積をさらに大きくする必要がある。
As shown in FIG. 4, the wall portion 8 is installed on the lower deck 22 (wall portion installation portion) of the hull 7 of the ship 100. Here, the lower deck 22 is a deck located below the upper deck 12. For convenience, both the upper deck 12 and the lower deck 22 are collectively referred to as decks. That is, a part of the barrier portion 8 is inserted inside the hull 7. The capacity of the storage unit 2 is preferably as large as possible in order to secure the navigation distance of the ship 100, for example. At this time, the diameters of the first valve 6 and the piping portion 4 are also increased. In this case, the volume required for the storage space 9 also increases, and it is necessary to provide a large barrier portion 8. The volume required for the storage space 9 also changes depending on the pressure resistance and temperature resistance of the storage unit 2. In particular, when the storage unit 2 has a high pressure resistance, when the fuel F leaks. Since the amount of leakage may increase, it is necessary to further increase the volume of the storage space 9.
貯蔵部2や防壁部8を大型化するために2つのサドル10A,10Bの高さ(上下方向の寸法)を大きくすると、つまりは貯蔵部2が嵩上げされると、例えば、船体7が動揺したときの貯蔵部2の船幅方向への加速度が大きくなる。このため、従来では、2つのサドル10A,10Bに追加して貯蔵部2を支持する別の支持部材を設けたり、2つのサドル10A,10Bを補強したりする場合がある。しかしながら、第1変形例の構成によれば、貯蔵部2や防壁部8が大型化したとしても、防壁部8の一部が船体7の内部に挿入されるので、貯蔵部2は嵩上げされず、上述したような支持部材の設置や2つのサドル10A,10Bの補強を行わなくて済む。また、2つのサドル10A,10Bの高さを小さくすることができる。このため、本実施形態においては貯蔵部2を大容量化させた場合においても、廉価で且つ軽量にて貯蔵部2の健全性を確保することができる燃料タンク1を提供することが可能となる。
When the heights (vertical dimensions) of the two saddles 10A and 10B are increased in order to increase the size of the storage portion 2 and the barrier portion 8, that is, when the storage portion 2 is raised, for example, the hull 7 is shaken. At that time, the acceleration of the storage unit 2 in the ship width direction becomes large. Therefore, conventionally, in addition to the two saddles 10A and 10B, another support member for supporting the storage unit 2 may be provided, or the two saddles 10A and 10B may be reinforced. However, according to the configuration of the first modification, even if the storage portion 2 and the barrier portion 8 are enlarged, a part of the barrier portion 8 is inserted into the hull 7, so that the storage portion 2 is not raised. It is not necessary to install the support member and reinforce the two saddles 10A and 10B as described above. Further, the heights of the two saddles 10A and 10B can be reduced. Therefore, in the present embodiment, even when the capacity of the storage unit 2 is increased, it is possible to provide the fuel tank 1 which is inexpensive and lightweight and can ensure the soundness of the storage unit 2. ..
尚、第1変形例では、防壁部8は下方甲板22上に設置されるとしたが、本開示はこの実施形態に限定されない。下方甲板22に設けられた不図示の防壁部設置体(防壁部設置部)に設置する場合でも同様に成り立つ。防壁部設置体としては設置台などが例示される。また、防壁部8の防壁の一部は、下方甲板22や防壁部設置体を使用する場合でも同様に成立する。
In the first modification, the barrier portion 8 is installed on the lower deck 22, but the present disclosure is not limited to this embodiment. The same applies when it is installed on a wall-breaking portion installation body (wall-prevention portion installation portion) (not shown) provided on the lower deck 22. An installation stand or the like is exemplified as a wall installation body. Further, a part of the barrier of the barrier portion 8 is similarly established even when the lower deck 22 or the barrier portion installation body is used.
(第2変形例)
図5を参照して、本開示の第1実施形態の第2変形例に係る燃料タンク1について説明する。第2変形例は、第1変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第1変形例で説明した構成と同じである。第2変形例において、第1変形例の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。尚、第2変形例は第1実施形態で説明した防壁部8の構成をさらに限定したものであってもよい。 (Second modification)
Thefuel tank 1 according to the second modification of the first embodiment of the present disclosure will be described with reference to FIG. The second modified example further limits the configuration of the barrier portion 8 described in the first modified example, but the other configurations are the same as the configurations described in the first modified example. In the second modification, those having the same constituent requirements as the first modification are designated by the same reference numerals, and detailed description thereof will be omitted. The second modification may further limit the configuration of the barrier portion 8 described in the first embodiment.
図5を参照して、本開示の第1実施形態の第2変形例に係る燃料タンク1について説明する。第2変形例は、第1変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第1変形例で説明した構成と同じである。第2変形例において、第1変形例の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。尚、第2変形例は第1実施形態で説明した防壁部8の構成をさらに限定したものであってもよい。 (Second modification)
The
図5に示すように、防壁部8は、上下方向に直交する断面(以下、断面Sとする)の面積が防壁部8と貯蔵部2とが接続する接続部分24で最も小さくなるように構成される。本実施形態では、防壁部8は、小径部8a及び大径部8bで構成されている。小径部8aは、貯蔵部2の底部5に接続され、小径部8aの断面Sの形状を維持して貯蔵部2の底部5から下方に延びる部分である。大径部8bは、小径部8aの断面Sの面積を拡げて小径部8aの先端から下方に延びる部分である。
As shown in FIG. 5, the barrier portion 8 is configured such that the area of the cross section (hereinafter referred to as the cross section S) orthogonal to the vertical direction is the smallest in the connecting portion 24 in which the barrier portion 8 and the storage portion 2 are connected. Will be done. In the present embodiment, the barrier portion 8 is composed of a small diameter portion 8a and a large diameter portion 8b. The small diameter portion 8a is a portion that is connected to the bottom portion 5 of the storage portion 2 and extends downward from the bottom portion 5 of the storage portion 2 while maintaining the shape of the cross section S of the small diameter portion 8a. The large-diameter portion 8b is a portion that expands the area of the cross section S of the small-diameter portion 8a and extends downward from the tip of the small-diameter portion 8a.
第2変形例の構成によれば、熱収縮や船体動揺によって貯蔵部2の底部5が変位した際に、貯蔵部2と防壁部8の接続箇所に生じる応力を低減することができる。尚、断面Sの面積が接続部分24で最も小さくなるのであれば、本開示は第2変形例に限定されない。例えば、小径部8aは、テーパー状など、下方に向かうにつれて断面Sの面積が大きくなるように構成されてもよい。
According to the configuration of the second modification, when the bottom portion 5 of the storage portion 2 is displaced due to heat shrinkage or hull shaking, the stress generated at the connection portion between the storage portion 2 and the barrier portion 8 can be reduced. The present disclosure is not limited to the second modification as long as the area of the cross section S is the smallest at the connecting portion 24. For example, the small diameter portion 8a may be configured such that the area of the cross section S increases toward the bottom, such as in a tapered shape.
(第3変形例)
図6を参照して、本開示の第1実施形態の第3変形例に係る燃料タンク1について説明する。第3変形例は、第2変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第2変形例で説明した構成と同じである。尚、第3変形例は第1実施形態や第1変形例で説明した防壁部8の構成をさらに限定したものであってもよい。 (Third modification example)
Thefuel tank 1 according to the third modification of the first embodiment of the present disclosure will be described with reference to FIG. The third modified example further limits the configuration of the barrier portion 8 described in the second modified example, but the other configurations are the same as the configurations described in the second modified example. The third modification may further limit the configuration of the barrier portion 8 described in the first embodiment and the first modification.
図6を参照して、本開示の第1実施形態の第3変形例に係る燃料タンク1について説明する。第3変形例は、第2変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第2変形例で説明した構成と同じである。尚、第3変形例は第1実施形態や第1変形例で説明した防壁部8の構成をさらに限定したものであってもよい。 (Third modification example)
The
図6に示すように、防壁部8は、上側防壁部26と上側防壁部26より下方に位置する下側防壁部28とに2分割されている。本実施形態では、小径部8aが上部8cと下部8dとに2分割されており、小径部8aの上部8cが上側防壁部26として、小径部8aの下部8dと大径部8bが下側防壁部28として構成されている。つまり、上側防壁部26(小径部8aの上部8c)は、下側防壁部28の一部(大径部8b)より上下方向に直交する断面の面積が小さい。また、配管部4には、防壁部8内に位置し、上述した第1弁6を取り付けるための第1弁用フランジ部27が形成されている。ここで、配管部4の第1弁用フランジ部27は、第2フランジ部32よりも下方に位置させることができる。本実施形態では、配管部4の第1弁用フランジ部27は、防壁部8の大径部8b内に位置している。以下では、配管部4のうち第1弁用フランジ部27より延在方向Dの上流側の部分を上流側配管部4aとする。尚、本実施形態では、小径部8aは断面Sの形状を維持しているが、小径部8aの上部8cと下部8dとで互いに異なる断面の形状を有していてもよい。この場合、上側防壁部26は、下側防壁部28の上下方向に直交する断面のうち最も小さい断面の面積より小さくてもよい。また、幾つかの実施形態では、不図示ではあるが、第1弁用フランジ部27の外径は、防壁部8の小径部8aの下部8dの内径以上であってもよい。
As shown in FIG. 6, the barrier portion 8 is divided into an upper barrier portion 26 and a lower barrier portion 28 located below the upper barrier portion 26. In the present embodiment, the small diameter portion 8a is divided into an upper portion 8c and a lower diameter portion 8d, the upper portion 8c of the small diameter portion 8a is the upper barrier portion 26, and the lower diameter portion 8a and the large diameter portion 8b are the lower barrier portion. It is configured as a part 28. That is, the upper wall portion 26 (the upper portion 8c of the small diameter portion 8a) has a smaller cross-sectional area orthogonal to the vertical direction than a part of the lower barrier portion 28 (large diameter portion 8b). Further, the piping portion 4 is formed with a first valve flange portion 27 for attaching the first valve 6 described above, which is located inside the barrier portion 8. Here, the first valve flange portion 27 of the piping portion 4 can be positioned below the second flange portion 32. In the present embodiment, the flange portion 27 for the first valve of the piping portion 4 is located in the large diameter portion 8b of the barrier portion 8. In the following, the portion of the piping portion 4 on the upstream side in the extending direction D from the flange portion 27 for the first valve will be referred to as the upstream piping portion 4a. In the present embodiment, the small diameter portion 8a maintains the shape of the cross section S, but the upper portion 8c and the lower portion 8d of the small diameter portion 8a may have different cross-sectional shapes. In this case, the upper barrier portion 26 may be smaller than the area of the smallest cross section of the cross sections orthogonal to the vertical direction of the lower barrier portion 28. Further, in some embodiments, although not shown, the outer diameter of the first valve flange portion 27 may be equal to or larger than the inner diameter of the lower portion 8d of the small diameter portion 8a of the barrier portion 8.
上側防壁部26の下端部には第1フランジ部30が形成され、下側防壁部28の上端部には第2フランジ部32が形成される。そして、ボルト33等の締結部材によって第1フランジ部30と第2フランジ部32とを締結することで、第2フランジ部32は第1フランジ部30に固定されている。尚、第1フランジ部30が形成される位置は、上側防壁部26の下端部に限定されない。第1フランジ部30は、上側防壁部26の任意の位置に形成される。同様に、第2フランジ部32が形成される位置は、下側防壁部28の上端部に限定されない。第2フランジ部32は、下側防壁部28の任意の位置に形成される。
The first flange portion 30 is formed at the lower end portion of the upper barrier portion 26, and the second flange portion 32 is formed at the upper end portion of the lower barrier portion 28. Then, the second flange portion 32 is fixed to the first flange portion 30 by fastening the first flange portion 30 and the second flange portion 32 with a fastening member such as a bolt 33. The position where the first flange portion 30 is formed is not limited to the lower end portion of the upper barrier portion 26. The first flange portion 30 is formed at an arbitrary position of the upper barrier portion 26. Similarly, the position where the second flange portion 32 is formed is not limited to the upper end portion of the lower barrier portion 28. The second flange portion 32 is formed at an arbitrary position of the lower barrier portion 28.
第3変形例の構成によれば、上側防壁部26と下側防壁部28を容易に分離することができる。このため、貯蔵部2に対する配管部4、第1弁6及び防壁部8の初期組み立て時及びメンテナンス時の作業効率を高くすることができる。特に、配管部4の第1弁用フランジ部27を第2フランジ部32よりも下方に位置させることで、第1弁6のメンテナンス効率を高くすることが可能となる。更に、小径部8aの上部8cにおける断面Sを配管部4の断面近くまで小さくできるため、貯蔵部2と防壁部8の接続箇所に生じる応力を可能な限り低減することが可能となる。
According to the configuration of the third modification, the upper barrier portion 26 and the lower barrier portion 28 can be easily separated. Therefore, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the piping portion 4, the first valve 6 and the barrier portion 8 with respect to the storage portion 2. In particular, by locating the first valve flange portion 27 of the piping portion 4 below the second flange portion 32, it is possible to increase the maintenance efficiency of the first valve 6. Further, since the cross section S of the upper portion 8c of the small diameter portion 8a can be reduced to near the cross section of the piping portion 4, the stress generated at the connection portion between the storage portion 2 and the barrier portion 8 can be reduced as much as possible.
(第4変形例)
図7を参照して、本開示の第1実施形態の第4変形例に係る燃料タンク1について説明する。第4変形例は、第3変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第3変形例で説明した構成と同じである。 (Fourth modification)
Thefuel tank 1 according to the fourth modification of the first embodiment of the present disclosure will be described with reference to FIG. 7. The fourth modified example further limits the configuration of the barrier portion 8 described in the third modified example, but the other configurations are the same as the configurations described in the third modified example.
図7を参照して、本開示の第1実施形態の第4変形例に係る燃料タンク1について説明する。第4変形例は、第3変形例で説明した防壁部8の構成をさらに限定したものであるが、それ以外の構成は第3変形例で説明した構成と同じである。 (Fourth modification)
The
図7に示すように、第1フランジ部30と第2フランジ部32との間には、上下方向に伸縮自在な継ぎ手34が設けられる。継ぎ手34は、例えばベローズであって、複数の山折り部35及び谷折り部36が交互に形成される蛇腹形状を有するものである。また、継ぎ手34の上端部は、ボルト38等の締結部材によって第1フランジ部30と締結されている。同様に、継ぎ手34の下端部は、ボルト40等の締結部材によって第2フランジ部32と締結されている。継ぎ手34は金属や有機材(例:ラバー、樹脂)等で構成される。
As shown in FIG. 7, a joint 34 that can be expanded and contracted in the vertical direction is provided between the first flange portion 30 and the second flange portion 32. The joint 34 is, for example, a bellows having a bellows shape in which a plurality of mountain folds 35 and valley folds 36 are alternately formed. Further, the upper end portion of the joint 34 is fastened to the first flange portion 30 by a fastening member such as a bolt 38. Similarly, the lower end of the joint 34 is fastened to the second flange 32 by a fastening member such as a bolt 40. The joint 34 is made of a metal, an organic material (eg, rubber, resin) or the like.
第4変形例の構成によれば、船体動揺等による下側防壁部28に生じる変位は継ぎ手34で吸収される。このため、貯蔵部2と防壁部8の接続箇所に生じる応力をより低減することができる。また、貯蔵部2に対する配管部4、第1弁6及び防壁部8の初期組み立て時及びメンテナンス時の作業効率を高くすることもできる。尚、継ぎ手34はベロー構造体に限定されない。例えばスリーブ型伸縮管継手など、伸縮自在な継ぎ手であれば他の手段であっても構わない。
According to the configuration of the fourth modification, the displacement generated in the lower wall portion 28 due to the hull shaking or the like is absorbed by the joint 34. Therefore, the stress generated at the connection point between the storage portion 2 and the barrier portion 8 can be further reduced. Further, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the piping portion 4, the first valve 6 and the barrier portion 8 with respect to the storage portion 2. The joint 34 is not limited to the bellows structure. Other means may be used as long as it is a stretchable joint such as a sleeve type telescopic pipe joint.
(第5変形例)
図8を参照して、本開示の第1実施形態の第5変形例に係る燃料タンク1について説明する。第5変形例は、第4変形例で説明した配管部4の構成をさらに限定したものであるが、それ以外の構成は第4変形例で説明した構成と同じである。尚、第5変形例は第1実施形態や第1変形例~第3変形で説明した配管部4の構成をさらに限定したものであってもよい。 (Fifth modification)
Thefuel tank 1 according to the fifth modification of the first embodiment of the present disclosure will be described with reference to FIG. The fifth modified example further limits the configuration of the piping portion 4 described in the fourth modified example, but the other configurations are the same as the configurations described in the fourth modified example. The fifth modification may further limit the configuration of the piping portion 4 described in the first embodiment and the first to third modifications.
図8を参照して、本開示の第1実施形態の第5変形例に係る燃料タンク1について説明する。第5変形例は、第4変形例で説明した配管部4の構成をさらに限定したものであるが、それ以外の構成は第4変形例で説明した構成と同じである。尚、第5変形例は第1実施形態や第1変形例~第3変形で説明した配管部4の構成をさらに限定したものであってもよい。 (Fifth modification)
The
図8に示すように、配管部4の貯蔵部2側の一端42は、貯蔵部2内(貯蔵空間3内)に位置する。配管部4の一端42に形成された気密用フランジ部44は、貯蔵空間3を気密にすることができる気密試験用フランジ(不図示)を着脱可能であるように構成される。また、この気密用フランジ部44は、燃料Fの流通によって燃料Fに混入する異物を除去可能に構成された第1ストレーナ45が取り付けられるように構成される。本実施形態では、第1ストレーナ45は、ボルト47等の締結部材によって気密用フランジ部44と締結されている。尚、第1ストレーナ45は配管部4の一端42に直接取り付けられてもよい。
As shown in FIG. 8, one end 42 of the piping unit 4 on the storage unit 2 side is located in the storage unit 2 (inside the storage space 3). The airtight flange portion 44 formed at one end 42 of the piping portion 4 is configured so that an airtightness test flange (not shown) that can make the storage space 3 airtight can be attached and detached. Further, the airtight flange portion 44 is configured to be attached with a first strainer 45 configured so that foreign matter mixed in the fuel F can be removed by the flow of the fuel F. In the present embodiment, the first strainer 45 is fastened to the airtight flange portion 44 by a fastening member such as a bolt 47. The first strainer 45 may be directly attached to one end 42 of the piping portion 4.
第5変形例の構成によれば、配管部4の一端42は貯蔵部2内に位置しているので、燃料Fに粒子状の異物が混入されていたとしても、貯蔵部2内に挿入されている配管部4の一部が貯蔵部2内の異物の移動を堰き止め、異物が貯蔵部2から排出されることを抑制することができる。
According to the configuration of the fifth modification, since one end 42 of the piping portion 4 is located in the storage portion 2, even if particulate foreign matter is mixed in the fuel F, it is inserted into the storage portion 2. A part of the piping section 4 is blocking the movement of foreign matter in the storage section 2, and it is possible to prevent the foreign matter from being discharged from the storage section 2.
ところで、船舶100に燃料タンク1を搭載するときに、第1弁6が第1弁用フランジ部27に取り付けられることが多い。そして、第1弁6の取り付け後に、上流側配管部4aの気密性が試験される。この気密試験は、ポンプなどによって圧送されたガスで上流側配管部4aの内部を加圧することで行われるが、上流側配管部4aは貯蔵空間3と連通しているため、従来からの気密試験では貯蔵空間3全体にガスを注入する必要があり、多くの時間を要していた。しかしながら、第5変形例によれば、気密試験時に、気密用フランジ部44に気密試験用フランジを取り付けることで、貯蔵空間3にガスを注入することなく、上流側配管部4aの気密性を試験することができる。このため、気密試験を行うのに必要となる時間を大幅に減らすことができる。
By the way, when the fuel tank 1 is mounted on the ship 100, the first valve 6 is often attached to the flange portion 27 for the first valve. Then, after the first valve 6 is attached, the airtightness of the upstream piping portion 4a is tested. This airtightness test is performed by pressurizing the inside of the upstream piping portion 4a with a gas pumped by a pump or the like, but since the upstream piping portion 4a communicates with the storage space 3, the conventional airtightness test is performed. Then, it was necessary to inject gas into the entire storage space 3, which took a lot of time. However, according to the fifth modification, by attaching the airtightness test flange to the airtightness flange portion 44 at the time of the airtightness test, the airtightness of the upstream piping portion 4a is tested without injecting gas into the storage space 3. can do. Therefore, the time required to perform the airtightness test can be significantly reduced.
また、第5変形例の構成によれば、気密用フランジ部44に第1ストレーナ45が取り付けられるので、貯蔵部2から燃料Fを排出する際に、貯蔵部2から燃料Fとともに異物が排出されることを抑制することができる。
Further, according to the configuration of the fifth modification, since the first strainer 45 is attached to the airtight flange portion 44, when the fuel F is discharged from the storage portion 2, foreign matter is discharged from the storage portion 2 together with the fuel F. Can be suppressed.
(第6変形例)
図9を参照して、本開示の第1実施形態の第6変形例に係る燃料タンク1について説明する。第6変形例は、第5変形例で説明した貯蔵部2の底部5の構成をさらに限定したものであるが、それ以外の構成は第5変形例で説明した構成と同じである。尚、第6変形例は第1実施形態や第1変形例~第4変形で説明した貯蔵部2の底部5の構成をさらに限定したものであってもよい。 (6th modification)
Thefuel tank 1 according to the sixth modification of the first embodiment of the present disclosure will be described with reference to FIG. The sixth modification further limits the configuration of the bottom portion 5 of the storage unit 2 described in the fifth modification, but the other configurations are the same as those described in the fifth modification. The sixth modification may further limit the configuration of the bottom portion 5 of the storage unit 2 described in the first embodiment and the first to fourth modifications.
図9を参照して、本開示の第1実施形態の第6変形例に係る燃料タンク1について説明する。第6変形例は、第5変形例で説明した貯蔵部2の底部5の構成をさらに限定したものであるが、それ以外の構成は第5変形例で説明した構成と同じである。尚、第6変形例は第1実施形態や第1変形例~第4変形で説明した貯蔵部2の底部5の構成をさらに限定したものであってもよい。 (6th modification)
The
図9に示すように、貯蔵部2の底部5には、貯蔵部2の底部5の内面46の一部46aから陥没することで陥没空間48を区画する陥没部50が設けられ、配管部4の一端42は陥没空間48内に位置する。図9に示した実施形態では、気密用フランジ部44及び第1ストレーナ45も陥没空間48内に位置している。
As shown in FIG. 9, the bottom portion 5 of the storage portion 2 is provided with a recessed portion 50 for partitioning the depressed space 48 by sinking from a part 46a of the inner surface 46 of the bottom portion 5 of the storage portion 2. One end 42 of is located in the depressed space 48. In the embodiment shown in FIG. 9, the airtight flange portion 44 and the first strainer 45 are also located in the depressed space 48.
陥没部50は、陥没空間48を下方から囲う下壁部52と、この下壁部52の周縁から上方に向かって延在し陥没空間48を上下方向とは交差する方向から囲う側壁部54と、を備える。下壁部52は配管部4によって貫通されている。側壁部54には上側防壁部26が接続されており、この上側防壁部26の外周縁に第1フランジ部30が形成されている。
The depressed portion 50 includes a lower wall portion 52 that surrounds the depressed space 48 from below, and a side wall portion 54 that extends upward from the peripheral edge of the lower wall portion 52 and surrounds the depressed space 48 from a direction intersecting the vertical direction. , Equipped with. The lower wall portion 52 is penetrated by the piping portion 4. An upper barrier portion 26 is connected to the side wall portion 54, and a first flange portion 30 is formed on the outer peripheral edge of the upper barrier portion 26.
配管部4の一端42が貯蔵部2内に位置するように構成されると、貯蔵部2から燃料Fを排出することができる燃料Fの水位が上がる。このため、貯蔵部2から全ての燃料Fを排出することができず、燃料Fの一部が貯蔵部2に残ってしまう虞がある。この点、第6変形例の構成によれば、配管部4の一端42は、底部5の内面46の一部46aから陥没することで区画された陥没空間48内に位置するので、燃料Fの大部分を貯蔵部2から排出することができ、貯蔵部2に残る燃料Fの量を非常に小さくすることができる。
When one end 42 of the piping portion 4 is configured to be located in the storage portion 2, the water level of the fuel F capable of discharging the fuel F from the storage portion 2 rises. Therefore, not all the fuel F can be discharged from the storage unit 2, and a part of the fuel F may remain in the storage unit 2. In this regard, according to the configuration of the sixth modification, since one end 42 of the piping portion 4 is located in the depressed space 48 partitioned by being depressed from a part 46a of the inner surface 46 of the bottom portion 5, the fuel F Most of the fuel can be discharged from the storage unit 2, and the amount of fuel F remaining in the storage unit 2 can be made very small.
図10に示すように、第6変形例の別の実施形態では、陥没空間48を上方から覆い、燃料Fの流通によって燃料Fに混入する異物を除去可能に構成された第2ストレーナ56をさらに含んでもよい。本実施形態では、側壁部54の内面には第2ストレーナ用フランジ部58が形成されている。そして、ボルト60のような締結部材によって第2ストレーナ56と第2ストレーナ用フランジ部58とを締結することで、第2ストレーナ56は第2ストレーナ用フランジ部58上に固定されている。
As shown in FIG. 10, in another embodiment of the sixth modification, a second strainer 56 is further configured to cover the depressed space 48 from above and remove foreign matter mixed in the fuel F by the flow of the fuel F. It may be included. In the present embodiment, a second strainer flange portion 58 is formed on the inner surface of the side wall portion 54. Then, the second strainer 56 is fixed on the second strainer flange portion 58 by fastening the second strainer 56 and the second strainer flange portion 58 with a fastening member such as a bolt 60.
このような構成によれば、第2ストレーナ56は陥没空間48を上方から覆うので、貯蔵部2から燃料Fを排出する際に、異物が陥没空間48に移動することを防止し、貯蔵部2から燃料Fとともに異物が排出されることを抑制することができる。尚、貯蔵部2の底部5に陥没空間48を区画する陥没部50が設けられるのであれば、陥没空間48を上方から覆うように第2ストレーナ56を設けることが可能であるため、本開示は第6変形例の別の実施形態に限定されない。つまり、気密用フランジ部44や第1ストレーナ45は第2ストレーナ56を設けるための必須の構成とはなっていない。
According to such a configuration, since the second strainer 56 covers the depressed space 48 from above, it prevents foreign matter from moving to the depressed space 48 when the fuel F is discharged from the storage unit 2, and the storage unit 2 It is possible to prevent foreign matter from being discharged together with the fuel F. If the depressed portion 50 for partitioning the depressed space 48 is provided at the bottom 5 of the storage portion 2, the second strainer 56 can be provided so as to cover the depressed space 48 from above. It is not limited to another embodiment of the sixth modification. That is, the airtight flange portion 44 and the first strainer 45 are not indispensable configurations for providing the second strainer 56.
上記各実施形態に記載の内容は、例えば以下のように把握される。
The contents described in each of the above embodiments are grasped as follows, for example.
(1)本開示に係る燃料タンク(1)は、船舶(100)に搭載される燃料タンクであって、燃料(F)が貯蔵される貯蔵部(2)と、前記貯蔵部の底部(5)から下方に延在し、前記燃料が流通する配管部(4)と、前記貯蔵部の前記底部から前記配管部が延在する方向において最初に前記配管部に設けられる弁(6)と、前記貯蔵部の底部(5)から少なくとも前記弁までを気密可能に覆う防壁部(8)と、を備え、前記防壁部は、前記貯蔵部よりも下方で、前記船舶の一部である防壁部設置部(12、13、22)に設置される。
(1) The fuel tank (1) according to the present disclosure is a fuel tank mounted on a ship (100), and has a storage portion (2) for storing fuel (F) and a bottom portion (5) of the storage portion. ), And a valve (6) first provided in the pipe portion in the direction in which the pipe portion extends from the bottom of the storage portion to the pipe portion (4) through which the fuel flows downward. A barrier portion (8) that airtightly covers from the bottom portion (5) of the storage portion to at least the valve is provided, and the barrier portion is below the storage portion and is a part of the ship. It is installed in the installation section (12, 13, 22).
上記(1)に記載の構成によれば、防壁部は、貯蔵部よりも下方で、船舶の一部である防壁部設置部に設置されるので、防壁部を下方から支持することができる。このため、防壁部が防壁部設置部に設置されず、貯蔵部に吊り下げられる場合と比較して、廉価で且つ軽量にて防壁部を構成することが可能となるため、より燃料タンクの健全性を確保することができる。
According to the configuration described in (1) above, the wall portion is installed below the storage portion and at the wall portion installation portion which is a part of the ship, so that the barrier portion can be supported from below. For this reason, the wall portion can be constructed at a lower cost and lighter weight than when the barrier portion is not installed in the barrier portion installation portion and is hung in the storage portion, so that the fuel tank is sounder. Sex can be ensured.
(2)幾つかの実施形態では、上記(1)に記載の構成において、前記防壁部設置部は、前記貯蔵部の前記底部に面する設置面を含み、前記防壁部の一部は前記設置面から構成される。
(2) In some embodiments, in the configuration described in (1) above, the barrier portion installation portion includes an installation surface facing the bottom portion of the storage portion, and a part of the barrier portion is the installation. It consists of faces.
上記(2)に記載の構成によれば、防壁部設置部の一部を防壁部として機能させることができる。
According to the configuration described in (2) above, a part of the barrier portion installation portion can function as the barrier portion.
(3)幾つかの実施形態では、上記(1)又は(2)に記載の構成において、前記防壁部設置部は、甲板(12、22)である。
(3) In some embodiments, in the configuration described in (1) or (2) above, the barrier portion installation portion is a deck (12, 22).
上記(3)に記載の構成によれば、甲板に防壁部を設置することは比較的容易なので、廉価で且つ軽量にて防壁部を構成することを容易に実現することができる。
According to the configuration described in (3) above, it is relatively easy to install the barrier portion on the deck, so that it is possible to easily construct the barrier portion at low cost and light weight.
(4)幾つかの実施形態では、上記(1)から(3)の何れか1つに記載の構成において、前記貯蔵部は、前記防壁部設置部に設置された複数のサドル(10A、10B)に載置されており、前記複数のサドルは、前記貯蔵部と固定される固定サドル(10A)と前記貯蔵部に当接する当接サドル(10B)とを含み、前記配管部は、前記当接サドルよりも前記固定サドルに近い前記貯蔵部の前記底部から下方に延在している。
(4) In some embodiments, in the configuration according to any one of (1) to (3) above, the storage unit is a plurality of saddles (10A, 10B) installed in the barrier installation unit. ), The plurality of saddles include a fixed saddle (10A) fixed to the storage portion and an abutting saddle (10B) abutting the storage portion, and the piping portion is the same. It extends downward from the bottom of the storage section, which is closer to the fixed saddle than the tangent saddle.
上記(4)に記載の構成によれば、貯蔵部の底部の変位は当接サドルよりも固定サドルに近い方が小さいので、配管部に生じる応力を小さくすることができる。
According to the configuration described in (4) above, the displacement of the bottom of the storage portion is smaller when it is closer to the fixed saddle than to the contact saddle, so that the stress generated in the piping portion can be reduced.
(5)幾つかの実施形態では、上記(1)から(4)の何れか1つに記載の構成において、前記防壁部は、上下方向に直交する断面の面積が前記防壁部と前記貯蔵部とが接続する接続部分(24)で最も小さくなるように構成される。
(5) In some embodiments, in the configuration according to any one of (1) to (4) above, the barrier portion has a cross-sectional area orthogonal to the vertical direction of the barrier portion and the storage portion. It is configured to be the smallest at the connection portion (24) to which and is connected.
上記(5)に記載の構成によれば、熱収縮や船体動揺によって貯蔵部の底部が変位した際に、貯蔵部と防壁部の接続箇所に生じる応力を低減することができる。
According to the configuration described in (5) above, it is possible to reduce the stress generated at the connection point between the storage portion and the barrier portion when the bottom portion of the storage portion is displaced due to heat shrinkage or hull shaking.
(6)幾つかの実施形態では、上記(1)から(5)の何れか1つに記載の構成において、前記防壁部は、上側防壁部(26)と前記上側防壁部より下方に位置する下側防壁部(28)とに2分割され、前記上側防壁部には第1フランジ部(30)が形成され、前記下側防壁部には第2フランジ部(32)が形成され、前記第1フランジ部は前記第2フランジ部に固定可能に構成される。
(6) In some embodiments, in the configuration according to any one of (1) to (5) above, the barrier portion is located below the upper barrier portion (26) and the upper barrier portion. It is divided into two parts, a lower barrier portion (28), a first flange portion (30) is formed on the upper barrier portion, and a second flange portion (32) is formed on the lower barrier portion. One flange portion is configured to be fixed to the second flange portion.
上記(6)に記載の構成によれば、上側防壁部と下側防壁部を容易に分離することができる。このため、防壁部の初期組み立て時及びメンテナンス時の作業効率を高くすることができる。
According to the configuration described in (6) above, the upper barrier portion and the lower barrier portion can be easily separated. Therefore, it is possible to improve the work efficiency at the time of initial assembly and maintenance of the barrier portion.
(7)幾つかの実施形態では、上記(6)に記載の構成において、上側防壁部は、下側防壁部より上下方向に直交する断面の面積が小さい。
(7) In some embodiments, in the configuration described in (6) above, the upper barrier portion has a smaller cross-sectional area orthogonal to the lower barrier portion in the vertical direction.
上記(7)に記載の構成によれば、上側防壁部の断面を配管部の断面近くまで小さくできるため、貯蔵部と防壁部の接続箇所に生じる応力を可能な限り低減することが可能となる。
According to the configuration described in (7) above, the cross section of the upper barrier portion can be reduced to near the cross section of the piping portion, so that the stress generated at the connection portion between the storage portion and the barrier portion can be reduced as much as possible. ..
(8)幾つかの実施形態では、上記(6)又は(7)に記載の構成において、前記第1フランジ部と前記第2フランジ部との間には、伸縮自在な継ぎ手(34)が設けられる。
(8) In some embodiments, in the configuration described in (6) or (7) above, a stretchable joint (34) is provided between the first flange portion and the second flange portion. Be done.
上記(8)に記載の構成によれば、船体動揺等による下側防壁部に生じる変位は継ぎ手で吸収されるので、貯蔵部と防壁部の接続箇所に生じる応力をより低減することができる。
According to the configuration described in (8) above, the displacement generated in the lower wall portion due to the hull shaking or the like is absorbed by the joint, so that the stress generated at the connection portion between the storage portion and the barrier portion can be further reduced.
(9)幾つかの実施形態では、上記(1)から(8)の何れか1つに記載の構成において、前記配管部の前記貯蔵部側の一端(42)は、前記貯蔵部内に位置する。
(9) In some embodiments, in the configuration according to any one of (1) to (8) above, one end (42) of the piping portion on the storage portion side is located in the storage portion. ..
上記(9)に記載の構成によれば、配管部の一端は貯蔵部内に位置しているので、燃料に粒子状の異物が混入されていたとしても、貯蔵部から燃料を排出する際に、貯蔵部内に挿入されている配管部の一部が異物の移動を堰き止め、貯蔵部から異物が排出されることを抑制することができる。
According to the configuration described in (9) above, since one end of the piping section is located in the storage section, even if particulate foreign matter is mixed in the fuel, when the fuel is discharged from the storage section, the fuel is discharged. A part of the piping portion inserted in the storage portion can block the movement of foreign matter and prevent the foreign matter from being discharged from the storage portion.
(10)幾つかの実施形態では、上記(9)に記載の構成において、前記配管部の前記貯蔵部側の一端に取り付けられ、前記燃料の流通によって前記燃料に混入する異物を除去可能に構成された第1ストレーナ(45)を含む。
(10) In some embodiments, in the configuration described in (9) above, the piping portion is attached to one end of the piping portion on the storage portion side so that foreign matter mixed in the fuel can be removed by the flow of the fuel. Includes the first strainer (45).
上記(10)に記載の構成によれば、配管部の一端に第1ストレーナが取り付けられるので、貯蔵部から燃料を排出する際に、貯蔵部から燃料とともに異物が排出されることを抑制することができる。又は、貯蔵部に燃料を注入する際に、配管部から燃料とともに異物が貯蔵部内に注入されることを抑制することができる。
According to the configuration described in (10) above, since the first strainer is attached to one end of the piping portion, it is possible to suppress the discharge of foreign matter together with the fuel from the storage portion when the fuel is discharged from the storage portion. Can be done. Alternatively, when injecting fuel into the storage unit, it is possible to prevent foreign matter from being injected into the storage unit together with the fuel from the piping unit.
(11)幾つかの実施形態では、上記(9)又は(10)に記載の構成において、前記貯蔵部の前記底部には、前記底部の内面(46)の一部(46a)から陥没することで陥没空間(48)を区画する陥没部(50)が設けられ、前記配管部の前記貯蔵部側の一端は前記陥没空間内に位置する。
(11) In some embodiments, in the configuration described in (9) or (10) above, the bottom portion of the storage portion is recessed from a part (46a) of the inner surface (46) of the bottom portion. A recessed portion (50) for partitioning the depressed space (48) is provided, and one end of the piping portion on the storage portion side is located in the depressed space.
配管部の一端が貯蔵部内に位置するように構成されると、貯蔵部から燃料を排出することができる燃料の水位が上がる。このため、貯蔵部から全ての燃料を排出することができず、燃料の一部が貯蔵部に残ってしまう虞がある。しかしながら、上記(11)に記載の構成によれば、配管部の一端は、底部の内面の一部から陥没することで区画された陥没空間内に位置するので、燃料の大部分を貯蔵部から排出することができ、貯蔵部内に残る燃料の量を小さくすることができる。
If one end of the piping section is configured to be located inside the storage section, the water level of fuel that can discharge fuel from the storage section rises. Therefore, not all the fuel can be discharged from the storage unit, and a part of the fuel may remain in the storage unit. However, according to the configuration described in (11) above, since one end of the piping portion is located in the depressed space partitioned by being depressed from a part of the inner surface of the bottom portion, most of the fuel is stored from the storage portion. It can be discharged and the amount of fuel remaining in the storage can be reduced.
(12)幾つかの実施形態では、上記(11)に記載の構成において、前記陥没空間を上方から覆い、前記燃料の流通によって前記燃料に混入する異物を除去可能に構成された第2ストレーナ(56)を含む。
(12) In some embodiments, in the configuration described in (11) above, a second strainer configured to cover the depressed space from above and remove foreign matter mixed in the fuel by the flow of the fuel (12). 56) is included.
上記(12)に記載の構成によれば、第2ストレーナは陥没空間を上方から覆うので、貯蔵部から燃料を排出する際に、異物が陥没空間に移動することを防止し、貯蔵部から燃料とともに異物が排出されることを抑制することができる。又は、貯蔵部に燃料を注入する際に、貯蔵部内において異物が陥没空間以外の空間に侵入することを抑制することができる。
According to the configuration described in (12) above, the second strainer covers the depressed space from above, so that when the fuel is discharged from the storage portion, foreign matter is prevented from moving to the depressed space, and the fuel is discharged from the storage portion. At the same time, it is possible to suppress the discharge of foreign matter. Alternatively, when injecting fuel into the storage unit, it is possible to prevent foreign matter from entering a space other than the depressed space in the storage unit.
(13)幾つかの実施形態では、船舶(100)は、上記(1)から(12)の何れか1つに記載の燃料タンクを搭載する。
(13) In some embodiments, the ship (100) is equipped with the fuel tank according to any one of (1) to (12) above.
上記(13)に記載の構成によれば、貯蔵部の底部から配管が延在する燃料タンクにおいて、より廉価で且つ軽量にて貯蔵部を構成することで、より健全性を確保することができる船舶を提供することができる。
According to the configuration described in (13) above, in a fuel tank in which a pipe extends from the bottom of the storage section, the storage section can be constructed at a lower cost and lighter weight to ensure more soundness. Ships can be provided.
1 燃料タンク
2 貯蔵部
3 貯蔵空間
4 配管部
4a 上流側配管部
5 貯蔵部の底部
6 第1弁(弁)
7 船体
8 防壁部
9 格納空間
10A 後方サドル(固定サドル)
10B 前方サドル(当接サドル)
12 上甲板(防壁部設置部)
14 断熱材
20 燃料調整部
22 下方甲板(防壁部設置部)
26 上側防壁部
27 第1弁用フランジ部
28 下側防壁部
30 第1フランジ部
32 第2フランジ部
34 継ぎ手
35 山折り部
36 谷折り部
44 気密用フランジ部
45 第1ストレーナ
46 貯蔵部の底部の内面
48 陥没空間
50 陥没部
56 第2ストレーナ
100 船舶
D 延在方向
F 燃料 1Fuel tank 2 Storage section 3 Storage space 4 Piping section 4a Upstream piping section 5 Bottom of storage section 6 First valve (valve)
7Hull 8 Barrier 9 Storage space 10A Rear saddle (fixed saddle)
10B front saddle (contact saddle)
12 Upper deck (wall installation part)
14Insulation material 20 Fuel adjustment part 22 Lower deck (wall part installation part)
26Upper barrier 27 First valve flange 28 Lower barrier 30 First flange 32 Second flange 34 Joint 35 Mountain fold 36 Valley fold 44 Airtight flange 45 First strainer 46 Bottom of storage Inner surface 48 Sink space 50 Sink 56 Second strainer 100 Ship D Extension direction F Fuel
2 貯蔵部
3 貯蔵空間
4 配管部
4a 上流側配管部
5 貯蔵部の底部
6 第1弁(弁)
7 船体
8 防壁部
9 格納空間
10A 後方サドル(固定サドル)
10B 前方サドル(当接サドル)
12 上甲板(防壁部設置部)
14 断熱材
20 燃料調整部
22 下方甲板(防壁部設置部)
26 上側防壁部
27 第1弁用フランジ部
28 下側防壁部
30 第1フランジ部
32 第2フランジ部
34 継ぎ手
35 山折り部
36 谷折り部
44 気密用フランジ部
45 第1ストレーナ
46 貯蔵部の底部の内面
48 陥没空間
50 陥没部
56 第2ストレーナ
100 船舶
D 延在方向
F 燃料 1
7
10B front saddle (contact saddle)
12 Upper deck (wall installation part)
14
26
Claims (13)
- 船舶に搭載される燃料タンクであって、
燃料が貯蔵される貯蔵部と、
前記貯蔵部の底部から下方に延在し、前記燃料が流通する配管部と、
前記貯蔵部の前記底部から前記配管部が延在する方向において最初に前記配管部に設けられる弁と、
前記貯蔵部の前記底部から少なくとも前記弁までを気密可能に覆う防壁部と、を備え、
前記防壁部は、前記貯蔵部よりも下方で、前記船舶の一部である防壁部設置部に設置される、ことを特徴とする燃料タンク。 A fuel tank mounted on a ship
A storage area where fuel is stored and
A piping section extending downward from the bottom of the storage section and through which the fuel flows,
A valve first provided in the pipe portion in a direction extending from the bottom portion of the storage portion to the pipe portion.
A barrier portion that airtightly covers from the bottom portion of the storage portion to at least the valve is provided.
A fuel tank characterized in that the barrier portion is installed below the storage portion and at a barrier portion installation portion that is a part of the ship. - 前記防壁部設置部は、前記貯蔵部の前記底部に面する設置面を含み、
前記防壁部の一部は前記設置面から構成される、ことを特徴とする請求項1に記載の燃料タンク。 The wall portion installation portion includes an installation surface facing the bottom portion of the storage portion.
The fuel tank according to claim 1, wherein a part of the barrier portion is composed of the installation surface. - 前記防壁部設置部は甲板である、ことを特徴とする請求項1又は2に記載の燃料タンク。 The fuel tank according to claim 1 or 2, wherein the barrier portion installation portion is a deck.
- 前記貯蔵部は、前記防壁部設置部に設置された複数のサドルに載置されており、
前記複数のサドルは、前記貯蔵部と固定される固定サドルと前記貯蔵部と当接する当接サドルとを含み、
前記配管部は、前記当接サドルよりも前記固定サドルに近い前記貯蔵部の前記底部から下方に延在している、ことを特徴とする請求項1から3の何れか一項に記載の燃料タンク。 The storage portion is mounted on a plurality of saddles installed in the barrier portion installation portion.
The plurality of saddles include a fixed saddle fixed to the storage portion and an abutting saddle abutting the storage portion.
The fuel according to any one of claims 1 to 3, wherein the piping portion extends downward from the bottom portion of the storage portion closer to the fixed saddle than the contact saddle. tank. - 前記防壁部は、上下方向に直交する断面の面積が前記防壁部と前記貯蔵部とが接続する接続部分で最も小さくなるように構成される、ことを特徴とする請求項1から4の何れか一項に記載の燃料タンク。 Any of claims 1 to 4, wherein the barrier portion is configured such that the area of the cross section orthogonal to the vertical direction is the smallest at the connection portion where the barrier portion and the storage portion are connected. The fuel tank described in item 1.
- 前記防壁部は、上側防壁部と前記上側防壁部より下方に位置する下側防壁部とに2分割され、
前記上側防壁部には第1フランジ部が形成され、
前記下側防壁部には第2フランジ部が形成され、
前記第1フランジ部は前記第2フランジ部に固定可能に構成される、ことを特徴とする請求項1から5の何れか一項に記載の燃料タンク。 The barrier portion is divided into an upper barrier portion and a lower barrier portion located below the upper barrier portion.
A first flange portion is formed on the upper barrier portion, and the upper barrier portion is formed with a first flange portion.
A second flange portion is formed on the lower barrier portion, and a second flange portion is formed.
The fuel tank according to any one of claims 1 to 5, wherein the first flange portion is configured to be fixed to the second flange portion. - 前記上側防壁部は、前記下側防壁部より上下方向に直交する断面の面積が小さい、ことを特徴とする請求項6に記載の燃料タンク。 The fuel tank according to claim 6, wherein the upper barrier portion has a smaller cross-sectional area orthogonal to the lower barrier portion in the vertical direction.
- 前記第1フランジ部と前記第2フランジ部との間には、伸縮自在な継ぎ手が設けられる、ことを特徴とする請求項6又は7に記載の燃料タンク。 The fuel tank according to claim 6 or 7, wherein a stretchable joint is provided between the first flange portion and the second flange portion.
- 前記配管部の前記貯蔵部側の一端は、前記貯蔵部内に位置する、ことを特徴とする請求項1から8の何れか一項に記載の燃料タンク。 The fuel tank according to any one of claims 1 to 8, wherein one end of the piping portion on the storage portion side is located in the storage portion.
- 前記配管部の前記貯蔵部側の一端に取り付けられ、前記燃料の流通によって前記燃料に混入する異物を除去可能に構成された第1ストレーナを含む、ことを特徴とする請求項9に記載の燃料タンク。 The fuel according to claim 9, further comprising a first strainer attached to one end of the piping portion on the storage portion side and configured to be able to remove foreign matter mixed in the fuel by the flow of the fuel. tank.
- 前記貯蔵部の前記底部には、前記底部の内面の一部から陥没することで陥没空間を区画する陥没部が設けられ、
前記配管部の前記貯蔵部側の一端は前記陥没空間内に位置する、ことを特徴とする請求項9又は10に記載の燃料タンク。 The bottom portion of the storage portion is provided with a recessed portion that divides the recessed space by sinking from a part of the inner surface of the bottom portion.
The fuel tank according to claim 9 or 10, wherein one end of the piping portion on the storage portion side is located in the depressed space. - 前記陥没空間を上方から覆い、前記燃料の流通によって前記燃料に混入する異物を除去可能に構成された第2ストレーナを含む、ことを特徴とする請求項11に記載の燃料タンク。 The fuel tank according to claim 11, further comprising a second strainer that covers the depressed space from above and is configured to be able to remove foreign substances mixed in the fuel by the flow of the fuel.
- 請求項1から12の何れか一項に記載の燃料タンクを搭載した、ことを特徴とする船舶。 A ship equipped with the fuel tank according to any one of claims 1 to 12.
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KR1020227022520A KR20220106201A (en) | 2020-02-28 | 2021-02-18 | fuel tanks, and ships |
CN202180009939.2A CN114981160B (en) | 2020-02-28 | 2021-02-18 | Fuel tank and ship |
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JP2020033058A JP7379211B2 (en) | 2020-02-28 | 2020-02-28 | fuel tanks and ships |
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- 2021-02-18 KR KR1020227022520A patent/KR20220106201A/en not_active Application Discontinuation
- 2021-02-18 WO PCT/JP2021/006137 patent/WO2021172164A1/en active Application Filing
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KR20220106201A (en) | 2022-07-28 |
CN114981160A (en) | 2022-08-30 |
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