CN115884921A - Tank deck structure and ship - Google Patents

Tank deck structure and ship Download PDF

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Publication number
CN115884921A
CN115884921A CN202180052614.2A CN202180052614A CN115884921A CN 115884921 A CN115884921 A CN 115884921A CN 202180052614 A CN202180052614 A CN 202180052614A CN 115884921 A CN115884921 A CN 115884921A
Authority
CN
China
Prior art keywords
tank
deck
disposed
ship
flange portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202180052614.2A
Other languages
Chinese (zh)
Inventor
望月良平
木元真哉
横泽均
永田良典
阿部信洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Marine United Inc
Original Assignee
IHI Marine United Inc
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Filing date
Publication date
Application filed by IHI Marine United Inc filed Critical IHI Marine United Inc
Publication of CN115884921A publication Critical patent/CN115884921A/en
Pending legal-status Critical Current

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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 
    • 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
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • 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
    • F17C2205/0103—Exterior arrangements
    • 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
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0367—Arrangements in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/018—Adapting dimensions
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

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

Abstract

The invention provides a tank deck structure and a ship, which can reduce the protruding amount of a tank deck to other areas. The tank top structure (2) according to the present embodiment includes: a deck (3) that forms a part of a tank holding area (13) of the storage tank (11) and that is provided with an opening (31) through which the tank top (12) is inserted; a flange section (4) extending from the circumferential surface section of the tank deck (12) so as to be disposed between the tank (11) and the deck (3); and an expansion joint (5) disposed so as to seal between the deck (3) and the flange (4).

Description

Tank deck structure and ship
Technical Field
The present invention relates to a tank deck structure and a ship, and more particularly to a tank deck structure and a ship suitable for a ship having a tank for storing liquefied gas.
Background
In recent years, from the viewpoint of environmental protection, liquefied gases such as Liquefied Natural Gas (LNG) and Liquefied Petroleum Gas (LPG) have been attracting attention as alternative fuels for heavy oil. For example, patent document 1 discloses a configuration in which a fuel tank is disposed in an upper structure disposed on an upper deck of a hull.
As a ship having a tank for storing liquefied gas, a liquefied gas carrier is known. For example, a liquefied gas carrier described in patent document 2 includes a tank holding area formed in a hull and a tank disposed in the tank holding area independently of the hull. In this independent type tank, a tank top for connecting piping in the tank and piping on the ship side is required by regulation.
The tank deck is often disposed in a state of protruding toward other areas such as the upper deck. In addition, the can holding area needs to be regularly surrounded with an airtight partition wall. In addition, the tank containing the liquefied gas contracts at low temperatures, and therefore, it is necessary to absorb the displacement. Then, as described in patent document 2, an expansion joint (bellows) is often disposed in the abutting portion between the tank deck and the hull.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2020-50135
Patent document 2: japanese patent laid-open publication No. 2011-7320
Disclosure of Invention
Problems to be solved by the invention
As described in patent document 1, there is also a method of disposing a fuel tank on the upper deck, but from the viewpoint of installation space problems and weather resistance, it is sometimes preferable to dispose a fuel tank in the hull. When the fuel tank is disposed in the hull, the tank deck is required when the independent system described in patent document 2 is adopted.
However, in the tank deck structure described in patent document 2, since the expansion joint (bellows) is disposed in a portion of the tank deck protruding to other region, there is a problem that the tank deck tends to be high.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a tank deck structure and a ship that can reduce the amount of protrusion of a tank deck to other areas.
Means for solving the problems
According to the present invention, there is provided a tank deck structure including a tank deck disposed at an upper portion of a tank that accommodates liquefied gas, the tank deck structure including: a deck that forms a part of a tank holding area for storing the tank and has an opening formed at a position corresponding to the tank top; a flange portion extending from a circumferential surface portion of the tank deck so as to be disposed between the tank and the deck; and an expansion joint disposed to seal between the deck and the flange portion.
The flange portion may be disposed so as to have a gap in which the expansion joint is disposed between the flange portion and the deck in a normal temperature state of the tank.
The deck may include a bracket disposed on a lower surface of a peripheral edge portion of the opening and connected to the expansion joint.
The tank holding area may be formed in the hull, and the deck may be disposed below the upper deck.
The tank holding area may be formed below the residential area or may be formed in front of the cabin.
The tank may be a fuel tank using the liquefied gas as a propellant.
Further, according to the present invention, there is provided a ship including any of the tank deck structures described above.
Effects of the invention
According to the tank deck structure and the vessel according to the present invention, the flange portion is disposed between the tank and the deck, and the expansion joint is disposed between the deck and the flange portion, whereby the expansion joint can be disposed below the deck, and the amount of protrusion of the tank deck to other areas can be reduced.
Drawings
Fig. 1 is an overall configuration diagram illustrating a ship according to an embodiment of the present invention.
Fig. 2 is a sectional view of the ship shown in fig. 1, (a) is an X-X sectional view, and (B) is a Z-Z sectional view.
Fig. 3 is an enlarged view of a portion a of the can top structure at normal temperature.
Fig. 4 is an enlarged view of a portion a of the top structure in a low temperature state.
Fig. 5 is an enlarged view of a portion a showing a modification of the can top structure shown in fig. 3.
Fig. 6 is an overall configuration diagram showing a modification of the ship shown in fig. 1.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to fig. 1 to 6. Here, fig. 1 is an overall configuration diagram showing a ship according to an embodiment of the present invention. Fig. 2 is a sectional view of the ship shown in fig. 1, (a) is an X-X sectional view, and (B) is a Z-Z sectional view. Fig. 3 is an enlarged view of a portion a of the can top structure at normal temperature. Fig. 4 is an enlarged view of a portion a of the tank top structure in a low temperature state.
As shown in fig. 1, a ship 1 according to an embodiment of the present invention includes a tank deck structure 2 including a tank deck 12 disposed above a tank 11 that stores liquefied gas, and the tank deck structure 2 includes: a deck 3 that forms a part of the tank holding area 13 of the storage tank 11 and includes an opening 31 formed at a position corresponding to the tank top 12; a flange portion 4 extending from a peripheral surface portion of the tank top 12 so as to be disposed between the tank 11 and the deck 3; and an expansion joint 5 disposed to seal between the deck 3 and the flange 4.
Fig. 1 shows a side view of the ship 1, but for convenience of explanation, a hull in which a part of the tank holding region 13 is disposed is partially cut away.
The ship 1 is, for example, a container ship, but may be any ship as long as it can form the tank holding area 13, and may be another cargo ship, a working ship, a fishing ship, a special ship, a naval ship, or the like. The ship 1 includes a residential area 15 disposed on the upper deck 14, for example. The tank holding area 13 is formed below the residential area 15, for example.
In the case where the ship 1 is a container ship, a space for loading containers cannot be formed below the residential area 15. Therefore, by disposing the tank holding area 13 below the residential area 15, the tank 11 can be disposed in the hull while suppressing a decrease in loading efficiency of the loading/unloading worker.
The tank holding area 13 is formed in the hull of the ship 1, and is composed of four partition walls 16 that divide the hold in the front-rear-left-right direction, a bottom plate 17 disposed in the partition walls 16, and the deck 3 disposed below the upper deck 14.
A tank connecting space 18 for connecting the piping of the tank 11 and the piping on the hull side is formed above the tank holding area 13. Further, a plurality of support blocks 11b that slidably support the bottom surface of the tank 11 are disposed on the bottom plate 17.
The tank 11 is, for example, a tank of an independent type separated from a hull. The tank 11 contains liquefied gas such as Liquefied Natural Gas (LNG) or Liquefied Petroleum Gas (LPG). The tank 11 in the present embodiment is a fuel tank using liquefied gas as propellant. The tank 11 is made of aluminum, for example, and a heat insulator (not shown) is disposed on the outer portion Zhou Zhengmian.
The tank 11 is, for example, a substantially rectangular parallelepiped shape as a whole, but is not limited to this shape. The tank 11 in the present embodiment has a shape that is long in the ship width direction and short in the ship length direction. Although not shown, the tank 11 may have a shape that is long in the ship length direction and short in the ship width direction.
The tank top 12 is formed in a cylindrical shape on the upper surface 11a of the tank 11 so as to communicate with the tank 11. The tank deck 12 is a portion that forms a space for connecting the pipes in the tank 11 and the pipes on the ship side. For example, as shown in fig. 3, the can top 12 has a height h from the upper surface 11a of the can 11 and is formed so as to protrude into the adjacent can connecting space 18 in the upper region.
Since the tank 11 is contracted in a low-temperature state in which liquefied gas is contained therein, the tank top 12 is preferably formed on a center line of the tank 11 in the ship width direction. The position of the can top 12 is arbitrarily set according to the can shape and the amount of shrinkage.
The deck 3 is a steel plate welded to the partition walls 16. The deck 3 has an opening 31 formed at a position where the tank top 12 is disposed. The opening 31 is formed in a shape through which the top 12 can be inserted, and is formed, for example, so that an inner edge portion has a certain gap from the circumferential surface of the top 12.
The deck 3 has an annular bracket 32 disposed on the lower surface of the peripheral edge of the opening 31. For example, as shown in fig. 3, the bracket 32 has a cylindrical portion extending downward from the lower surface of the deck 3 and a flange portion extending horizontally from the lower end of the cylindrical portion.
The tank 11 is disposed in the tank holding area 13 with a predetermined gap from the partition wall 16 and the deck 3. For example, as shown in fig. 3, a gap g is provided between the upper surface 11a of the tank 11 and the deck 3 in a normal temperature state. The flange portion 4 extending in the horizontal direction is disposed over the entire circumference of the can top 12.
For example, as shown in fig. 3, flange portion 4 is disposed so as to be located in gap g between deck 3 and upper surface 11a of tank 11 and below bracket 32. The flange portion of the bracket 32 and the flange portion 4 are arranged to overlap (overlap) each other in the vertical direction.
An expansion joint 5 is disposed between the flange portion of the bracket 32 and the flange portion 4. That is, flange 4 is disposed so as to have a gap in which expansion joint 5 can be disposed between deck 3 and upper surface 11a of tank 11 in the normal temperature state of tank 11.
The expansion joint 5 has, for example, a cylindrical shape having a bellows-shaped peripheral surface along the axial direction. The expansion joint 5 is, for example, a bellows made of a thermosetting elastomer such as synthetic rubber or silicone rubber. By disposing the expansion joint 5 between the bracket 32 and the flange portion 4, the gap g formed between the deck 3 and the upper surface 11a of the tank 11 can be sealed.
Both end portions of the expansion joint 5 are fixed to the bracket 32 and the flange portion 4 by fasteners such as bolts and nuts. An adhesive, a sealing material, a heat insulating material, a shaped steel, or the like may be provided at the fastening portion. The structure of the fastening portion of the expansion joint 5 is not limited to the above structure.
When the liquefied gas of an extremely low temperature is charged into the tank 11, the tank 11 contracts. For example, as shown in fig. 4, a gap g' between the deck 3 and the upper surface 11a of the tank 11 in the low temperature state of the tank 11 is larger than a gap g in the normal temperature state. The expansion amount of the gap g' is absorbed by the expansion of the expansion joint 5.
In the present embodiment, since the expansion joint 5 is disposed below the deck 3, a load is generated in the expansion joint 5 in the tensile direction when the tank 11 is shifted from the normal temperature state to the low temperature state. In the tank top of the tank disposed in the conventional liquefied gas carrier, since the expansion joint is disposed above the deck, a load is generated in the compression direction at the expansion joint when the tank is shifted from the normal temperature state to the low temperature state.
Therefore, in the conventional tank deck, it is necessary to secure a sufficient amount of compressive deformation in the expansion joint, and the expansion joint tends to be lengthened. In contrast, in the present embodiment, since a load acts in the tensile direction at low temperatures, the expansion joint 5 can be set to a minimum necessary length.
In addition, in the conventional tank deck, since the deck is disposed below the flange portion so as to prevent rainwater or seawater from entering the flange portion, the opening portion cannot pass through the flange portion during the construction of the deck, and an operation of constructing the deck with the outer edge of the flange portion cut off and then welding the outer edge of the flange portion is performed.
In contrast, in the present embodiment, since the tank holding area 13 is disposed in the hull, rainwater and seawater are less likely to enter the flange portion 4, and the deck 3 can be disposed above the flange portion 4. Therefore, the roof 12 can be inserted through the opening 31 of the deck 3 without cutting the outer edge of the flange portion 4, and the construction period can be shortened.
Next, a modification of the can top structure 2 according to the present embodiment will be described with reference to fig. 5. Here, fig. 5 is an enlarged view of a portion a showing a modification of the can top structure shown in fig. 3. The same components as those of the tank top structure 2 shown in fig. 3 are denoted by the same reference numerals, and redundant description thereof is omitted.
In the tank deck structure 2 shown in fig. 3, the top of the tank deck 12 is higher than the deck 3, and the tank deck 12 is inserted into the opening 31, but as shown in fig. 5, the top of the tank deck 12 may be configured to be lower than the deck 3. In this case, as shown in the drawing, the flange portion 4 may be formed to extend from the peripheral surface portion of the top portion of the can top 12.
Next, a modification of the ship 1 according to the present embodiment will be described with reference to fig. 6. Here, fig. 6 is an overall configuration diagram showing a modification of the ship shown in fig. 1. The same components as those of the ship 1 shown in fig. 1 are denoted by the same reference numerals, and redundant description thereof is omitted.
In the ship 1 shown in fig. 1, the case where the tank holding area 13 is disposed below the residential area 15 has been described, but the tank holding area 13 may be disposed in front of the nacelle 19 as shown in fig. 6.
When the tank 11 is a fuel tank, the tank holding region 13 is formed at a position adjacent to the nacelle 19, whereby the length of the piping can be shortened, and the space in the hull can be effectively utilized.
The arrangement of the tank holding area 13 is not limited to the lower part of the living area 15 or the front part of the nacelle 19, and may be other places as long as it is inside the hull (lower than the upper deck 14).
According to the tank deck structure 2 according to the present embodiment described above, the flange portion 4 is disposed between the tank 11 and the deck 3, and the expansion joint 5 is disposed between the deck 3 and the flange portion 4, whereby the expansion joint 5 can be disposed below the deck 3, and the amount of protrusion of the tank deck 12 to other areas (for example, the tank connecting space 18) can be reduced.
In the above-described embodiments (including the modifications), the case where the tank 11 is a fuel tank is assumed, but the tank 11 may be a tank that can store liquefied gas and that can be disposed in a ship body, or may be a tank other than a fuel tank.
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
Description of the reference numerals
Vessel 1, 2-tank deck structure, 3-deck, 4-flange part, 5-expansion joint, 11-tank, 11a upper surface, 11 b-support block, 12-tank deck, 13-tank holding area, 14-upper deck, 15-residential area, 16-partition wall, 17-floor, 18-tank connecting space, 19-cabin, 31-opening part, 32-bracket

Claims (7)

1. A tank deck structure including a tank deck disposed on an upper portion of a tank that accommodates liquefied gas, the tank deck structure comprising:
a deck that forms a part of a tank holding area for storing the tank and has an opening formed at a position corresponding to the tank top;
a flange portion extending from a circumferential surface portion of the tank deck so as to be disposed between the tank and the deck; and
and an expansion joint disposed to seal between the deck and the flange portion.
2. The roof construction of claim 1 wherein,
the flange portion is disposed so as to have a gap in which the expansion joint can be disposed between the flange portion and the deck in a normal temperature state of the tank.
3. The top construction of claim 1,
the deck includes a bracket disposed on a lower surface of a peripheral edge portion of the opening and connected to the expansion joint.
4. The roof construction of claim 1 wherein,
the tank holding area is formed in the hull, and the deck is disposed below the upper deck.
5. The roof construction of claim 4,
the tank holding area is formed below the populated area or in front of the cabin.
6. The roof construction of claim 1 wherein,
the tank is a fuel tank using the liquefied gas as a propellant.
7. A ship, characterized in that it comprises a ship body,
a can top structure according to any one of claims 1 to 6.
CN202180052614.2A 2020-08-26 2021-08-24 Tank deck structure and ship Pending CN115884921A (en)

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JP2020-142368 2020-08-26
JP2020142368A JP7083007B2 (en) 2020-08-26 2020-08-26 Tank dome structure and ships
PCT/JP2021/030906 WO2022045095A1 (en) 2020-08-26 2021-08-24 Tank dome structure and ship

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CN115884921A true CN115884921A (en) 2023-03-31

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JP (1) JP7083007B2 (en)
KR (1) KR20230052973A (en)
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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5426266B2 (en) 2009-05-25 2014-02-26 ジャパンマリンユナイテッド株式会社 Dome structure of liquefied gas tank
US10183728B2 (en) * 2014-01-23 2019-01-22 Bechtel Hydrocarbon Technology Solutions, Inc. Method for conversion of a vessel for use as floating liquefied natural gas facility
KR20170020992A (en) * 2015-08-17 2017-02-27 대우조선해양 주식회사 Method of installation of gas-dome
KR20170138282A (en) * 2016-06-07 2017-12-15 현대중공업 주식회사 Container ship
JP6704026B2 (en) 2018-09-27 2020-06-03 今治造船株式会社 Ship
CN109703701B (en) * 2019-01-25 2020-03-24 太平洋海洋工程（舟山）有限公司 Cabin opening sealing device capable of adapting to displacement of natural gas storage tank

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JP2022038077A (en) 2022-03-10
KR20230052973A (en) 2023-04-20
WO2022045095A1 (en) 2022-03-03
EP4206065A1 (en) 2023-07-05

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