WO2013024661A1 - タンク支持構造及び浮体構造物 - Google Patents
タンク支持構造及び浮体構造物 Download PDFInfo
- Publication number
- WO2013024661A1 WO2013024661A1 PCT/JP2012/068452 JP2012068452W WO2013024661A1 WO 2013024661 A1 WO2013024661 A1 WO 2013024661A1 JP 2012068452 W JP2012068452 W JP 2012068452W WO 2013024661 A1 WO2013024661 A1 WO 2013024661A1
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- WIPO (PCT)
- Prior art keywords
- tank
- support
- disposed
- support structure
- support block
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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- 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)
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- 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
- F17C2203/01—Reinforcing or suspension means
- F17C2203/014—Suspension means
- F17C2203/015—Bars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0631—Three or more walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0102—Applications for fluid transport or storage on or in the water
- F17C2270/0105—Ships
Definitions
- the present invention relates to a tank support structure and a floating structure, and more particularly to a tank support structure and a floating structure for supporting a tank that thermally contracts or expands in a tank housing portion having an inclined surface or a multistage surface.
- the tanks that store these liquid cargo are independent of the floating structure.
- the independent tank type used is widely used (see, for example, Patent Document 1 and Patent Document 2).
- liquefied gas for example, LNG
- the liquefied gas fuel tank is removed from the hull as in the case of the liquid cargo. It is planned to adopt an independent tank system.
- floating structures that are sailing or moored are subject to heaving that swings linearly up and down, swaying that swings linearly from side to side, surging that swings linearly back and forth, and heading around the center.
- a complex motion in which these motions are intertwined occurs. Therefore, it is important to stably support the tank in the independent tank type tank that can move relative to the floating structure.
- FIGS. 5 and 6 of Patent Document 1 disclose a structure in which a tank is supported by a bearing sheet, a floating chock (anti-floating chock), and a rolling chock (anti-rolling chock).
- the bearing seat is a support structure that supports the vertical load of the tank
- the rolling chock is a support structure that supports the horizontal load when the tank swings laterally due to rolling of the hull.
- the floating chock is a support structure that suppresses the floating of the tank during flooding.
- the load due to the movement of the floating structure caused by the weight of the floating structure and the above-described influence of the wave is mainly supported by the bearing seat and the rolling chock (anti-rolling chock).
- the bearing seat is disposed at the bottom of the hull
- the rolling chock (anti-rolling chock) is disposed at the ceiling and bottom of the hull.
- a support structure includes a hold support surface configured to cooperate with a tank support surface.
- Each of the support surfaces extends in the direction of thermal movement of the tank, and extends at an intermediate angle between the horizontal direction and the vertical direction so as to suppress lateral movement of the tank relative to the hold.
- the cooperating tank support surface and the hold support surface extend in the direction toward the center of the base of the tank along the direction of heat transfer.
- the vertical load of the tank is supported by a support member disposed at the bottom of the accommodating portion. Therefore, when the tank accommodating part is arranged in a narrow part such as the bow part or when an area sufficient to support the tank bottom part cannot be secured due to the arrangement relationship with other equipment, the tank described above is used. Support structure cannot be adopted. If they were to be adopted as they were, the tank had to be designed in accordance with the accommodating portion having a small area, resulting in problems such as a decrease in volumetric efficiency and a complicated support structure.
- the tank when a low-temperature liquefied gas such as LPG or LNG is sealed in the tank, the tank is thermally contracted or thermally expanded, so the tank support structure must be able to cope with the thermal contraction or thermal expansion of the tank. .
- the present invention has been devised in view of the above-described problems, and can cope with thermal contraction and thermal expansion of a tank even when the tank housing portion has an inclined surface or a multi-stage surface, and has a volumetric efficiency.
- An object of the present invention is to provide a tank support structure and a floating structure that can improve the above.
- a tank support structure for a tank mounted on a housing portion formed in a floating structure, an inclined surface or a multistage surface formed on a side surface portion of the housing portion, and the inclined surface or the multistage surface
- a plurality of support bases disposed on the bottom surface of the tank including a portion facing the inclined surface or the multistage surface, and a plurality of support blocks disposed on the support base;
- a support block bottom surface disposed on the support base portion of the support block, and a support surface supporting the support block of the support base portion, the two contacts with the tank in each of the support blocks
- a tank support structure characterized by having a plane parallel to a plane including a line segment connecting points and a straight line passing through a fixed point of the tank and parallel to the line segment.
- a floating structure having a main body part supported on water by buoyancy and an accommodating part formed on the main body part and mounted with a tank.
- the tank includes the accommodating part.
- a bottom surface of the tank including an inclined surface or a multistage surface formed on a side surface of the tank, a plurality of support bases disposed on the inclined surface or the multistage surface, and a portion facing the inclined surface or the multistage surface.
- the support surface that supports each of the support blocks is parallel to a plane including a line segment that connects two contact points with the tank in each of the support blocks, and a straight line that passes through the fixed point of the tank and is parallel to the line segment.
- a locking base portion disposed at the center of the bottom surface of the housing portion, and a member disposed at the center of the bottom surface of the tank and disposed on the locking base portion.
- the fixed point may be formed by locking the locking block to the locking base portion.
- the fixed point includes at least one locking base portion arranged along a center line direction of the floating structure, and at least one locking base portion along a width direction perpendicular to the center line direction. May be formed at the intersection of the center line direction and the width direction.
- At least one of the two contact points may be a contact point between the support block and the tank farthest from the fixed point.
- the support surface may be formed wider than the bottom surface of the support block in the tilt direction.
- the bottom surface of the tank may be formed such that the area of the portion facing the inclined surface or the multistage surface is larger than the portion facing the bottom surface of the housing portion.
- the tank may have a frame body portion that locks the support block. Further, the tank includes a leg portion protruding downward, and the support block is disposed on the leg portion, and the support block bottom surface and the support surface are formed with the leg portion as a part of the tank. It may be.
- the tank may have a side wall portion having a certain width along the center line direction of the floating structure or a side wall portion having a width changing along the center line direction of the floating structure.
- the side surface portion of the housing portion has an inclined surface or a multistage surface
- the support block bottom surface and the support surface have two contact points between the support block and the tank.
- the tank accommodating portion has an inclined surface or a multi-stage surface
- the bottom surface of the tank can be disposed along the inclined surface or the multistage surface, and the volumetric efficiency can be improved.
- the support block bottom surface and the support surface are formed in the direction of movement along the thermal contraction and thermal expansion of the tank, the tank can be supported while following the thermal contraction and thermal expansion of the tank.
- FIG. 1A It is an enlarged view of a tank support structure. It is operation
- FIG. 7B It is a figure which shows the fixed point in a taper tank, and has shown the positional relationship of two contact points and a fixed point. It is a figure which shows the fixed point in a taper tank, and has shown the modification of the positional relationship of two contact points and a fixed point. It is a whole block diagram of the floating structure in the tank support structure which concerns on 6th embodiment of this invention. It is a whole top view of the floating structure in the tank support structure concerning a 6th embodiment of the present invention. It is CC sectional drawing in FIG. 7B.
- FIG. 1 is a view showing a tank support structure according to the first embodiment of the present invention
- FIG. 1A is a sectional view
- FIG. 1B is an overall configuration of a floating structure having the tank support structure shown in FIG. 1A.
- FIG. 2 is an explanatory view of a tank support structure
- FIG. 2A is an enlarged view
- FIG. 2B is an operation explanatory view.
- the tank support structure according to the first embodiment of the present invention is a tank support structure for a tank 3 mounted on a storage portion 2 formed on a floating structure 1, as shown in FIG.
- the support base portion is disposed on the bottom surface portion 31 of the tank 3 including the inclined surface 21 formed on the side surface portion, the plurality of support base portions 22 disposed on the inclined surface 21, and the portion facing the inclined surface 21.
- a plane S including a straight line Lf parallel to Having rows surface see FIG. 5C). That is, the plane S includes a perpendicular line Lc dropped from the first contact point C to the straight line Lf and a perpendicular line Lc ′ dropped from the second contact point C ′ to the straight line Lf.
- the positional relationship among the line segment CC ′, the fixed point F, the straight line Lf, the perpendicular line Lc ′, and the plane S will be described later with reference to FIG. 5C.
- the tank 3 is a so-called parallel tank including a side wall portion 35 having a certain width along the center line direction Lm of the floating structure 1.
- the floating structure 1 has a main body 5 that is supported on water by buoyancy, and a housing 2 that is formed in the main body 5 and on which the tank 3 is mounted.
- the illustrated floating structure 1 is, for example, a self-standing square type LNG ship.
- the floating structure 1 may be an oil transport ship, an LPG ship, a chemical tanker, or the like as long as it is a ship having a self-supporting square tank 3, or a self-supporting square type LNG offshore floating facility (for example, FPSO).
- the floating structure 1 may be a vessel such as a container ship, a crude oil tanker, a general cargo ship, or a passenger ship having a liquefied gas fuel tank that stores a liquefied gas (for example, LNG) that is a propulsion fuel.
- a vessel such as a container ship, a crude oil tanker, a general cargo ship, or a passenger ship having a liquefied gas fuel tank that stores a liquefied gas (for example, LNG) that is a propulsion fuel.
- LNG liquefied gas
- FIG. 1A is a cross-sectional view taken along line AA in FIG. 1B, for example.
- the hull (main body part 5) in the bow part (for example, the AA line part) is formed so that the width of the ship bottom part becomes narrow, and as shown in FIG. And has a substantially V-shaped side surface.
- the accommodating portion 2 has a bottom surface portion 23 that constitutes a substantially horizontal plane disposed below the tank 3, and the tank 3 is supported in a horizontal direction at a substantially central portion (bottom surface central portion) of the bottom surface portion 23.
- a locking base 24 is disposed.
- the locking base portion 24 includes, for example, a support base 24a that supports the vertical load of the tank 3, a pair of protrusions 24b formed on the support base 24a along the center line extending in the longitudinal direction of the floating structure 1, Have The locking base portion 24 restrains the movement of the tank 3 in the center line direction Lm while restraining the locking block 6 by the protruding portion 24b, thereby restricting the movement in the horizontal direction (tank width direction) and on the straight line Lf.
- the fixed point F is formed.
- the latching base part 24 should just be comprised so that it can respond
- the locking base portion 24 may be configured to be able to support a horizontal load due to rolling of the floating structure 1.
- a plurality of support bases that support the vertical load of the tank 3 may be disposed on both sides of the locking base part 24 on the bottom surface part 23 of the housing part 2. Similar to the support structure, an anti-floating chock or an anti-rolling chock may be disposed on the upper portion of the tank 3.
- the accommodating part 2 formed in the bow part has a small area of the bottom part 23, and the locking base part 24 arranged on the bottom part 23 supports the vertical load of the tank 3. Can not do it.
- the accommodating portion 2 has an inclined surface 21 having a larger area than the bottom surface portion 23. Therefore, the bottom surface portion 31 of the tank 3 is also formed such that the area of the portion facing the inclined surface 21 (inclined portion 31a) is larger than the portion facing the bottom surface portion 23 of the accommodating portion 2 (horizontal portion 31b).
- the vertical load of the tank 3 can be supported by using the inclined surface 21 of the accommodating portion 2.
- the tank 3 is a tank for storing liquid cargo such as petroleum, LPG, LNG, and the like.
- LNG is a liquid obtained by cooling gaseous natural gas to a temperature of about ⁇ 160 ° C. or lower and needs to be maintained at a low temperature. Therefore, a panel-like heat insulating material (not shown) is stretched around the outer periphery of the tank 3.
- the tank 3 is an independent tank constructed independently from the hull (main body portion 5), and is placed inside the accommodating portion 2.
- the tank 3 may be a liquefied gas fuel tank that stores liquefied gas (for example, LNG) as propulsion fuel in a normal ship such as a container ship, a crude oil tanker, a general cargo ship, or a passenger ship.
- a support base portion 22 is formed on the inclined surface 21 of the housing portion 2, and a support surface 22 a is formed on the surface of the support base portion 22.
- the inclined portion 31 a in the bottom surface portion 31 of the tank 3 has an inclined surface substantially parallel to the inclined surface 21 of the accommodating portion 2.
- a frame body portion 32 that locks the support block 4 is disposed on the bottom surface portion 31 (inclined portion 31 a) of the tank 3.
- the horizontal portion 31 b in the bottom surface portion 31 of the tank 3 has a horizontal plane substantially parallel to the bottom surface portion 23 of the storage portion 2.
- a frame body portion 33 that locks the locking block 6 is disposed on the bottom surface portion 31 (horizontal portion 31 b) of the tank 3.
- the frame parts 32 and 33 are formed in an annular shape that surrounds the outer periphery of the support block 4, and have recesses that are open at the bottom.
- the support block 4 and the locking block 6 are made of, for example, square wood, and are fitted and locked by being pushed into the frame portions 32 and 33.
- the support block 4 includes a support block bottom surface 41 that contacts the support surface 22 a of the support base portion 22, and a support block top surface 42 that contacts the bottom surface portion 31 (inclined surface) of the tank 3.
- the support block 4 can use the thing similar to the conventional support block suitably, for example, what was comprised with the raw material with low heat conductivity, such as rubber
- the tank 3 is thermally contracted or thermally expanded by the contained material, but the fixed point F is a point on the hull center axis M in the bottom surface portion 31 (horizontal portion 31b) of the tank 3. That is, the fixed point F is a point where the position does not shift even when the tank 3 is thermally contracted or thermally expanded. Therefore, all the points on the wall surface of the tank 3 are thermally contracted or thermally expanded toward the fixed point F.
- the first contact point C is set, for example, as a contact point between the support block 4 and the tank 3 that is farthest from the fixed point F.
- any point for example, an intermediate point or the nearest point on the support block upper surface 42 may be set.
- the first contact point C may be set to a point on the upper surface 42 of the support block farthest from the fixed point F.
- the second contact point C ′ may be set to an end point on the side including the first contact point C of the support block upper surface 42 (see FIG. 5C).
- a plane that includes the perpendicular Lc and extends in the center line direction Lm (direction perpendicular to the paper surface) of the floating structure 1 is considered.
- the line segment CC ′ is set parallel to the side wall portion 35
- the support surface 22a of the support base part 22 and the support block bottom face 41 of the support block 4 are formed so that it may become a surface parallel to the plane containing the perpendicular Lc (a sectional view corresponds with the straight line Lp). That is, the perpendicular line Lc and the straight line Lp have a parallel relationship with each other.
- the support surface 22a is formed wider than the support block bottom surface 41 in the perpendicular Lc direction (that is, the inclined direction).
- the support block bottom surface 41 of the support block 4 has a width Wb in the perpendicular Lc direction
- the support surface 22a of the support base 22 has a width Ws in the perpendicular Lc direction, and has a relationship of Ws> Wb. is doing.
- the support block bottom surface 41 of the support block 4 has a width Wb ′ in the center line direction Lm
- the support surface 22a of the support base portion 22 has a width Ws ′ in the center line direction Lm direction
- Ws ′> Wb ′ See FIG. 5C).
- the vertical load of the tank 3 can be supported by the support base portion 22 via the support block 4. And even if it is a case where the accommodating part 2 of the tank 3 has the inclined surface 21, the bottom face part 31 (inclined part 31a) of the tank 3 can be arrange
- anti-rolling chock may be omitted.
- the tank 3 when the tank 3 is thermally contracted or expanded, as shown in FIG. 2B, the tank 3 moves.
- the case of thermal contraction is indicated by a solid line
- the case of thermal expansion is indicated by a one-dot chain line.
- the bottom surface portion 31 of the tank 3 thermally contracts or expands toward the fixed point F, and as a result, has a shape that expands and contracts in the width direction of the tank 3.
- the support block upper surface 42 is restrained by the frame body portion 33
- the support block 4 moves between the solid line or the alternate long and short dash line as shown in the figure, and the support block bottom surface 41 is the support base portion. 22 slides on the support surface 22a.
- the support block bottom surface 41 and the support surface 22a are formed in the direction of movement along the thermal contraction and thermal expansion of the tank 3, the tank 3 is moved while following the thermal contraction and thermal expansion of the tank 3. Can be supported.
- FIG. 3 is a figure which shows the tank support structure which concerns on other embodiment of this invention
- FIG. 3A has shown 2nd embodiment
- FIG. 3B has shown 3rd embodiment
- 4A and 4B are diagrams showing a tank support structure according to another embodiment of the present invention.
- FIG. 4A shows a fourth embodiment
- FIG. 4B shows a fifth embodiment.
- the tank 3 shown in these drawings is assumed to be a parallel tank as in the first embodiment.
- symbol is attached
- the tank 3 includes a leg portion 34 protruding downward, the support block 4 is disposed on the leg portion 34, and the leg portion 34 is attached to the tank 3.
- the support block bottom surface 41 and the support surface 22a are formed as a part.
- the leg portion 34 that protrudes downward in the vertical direction from the inclined portion 31 a of the bottom surface portion 31 is welded and disposed, and the lower surface of the leg portion 34 is formed in a substantially horizontal plane, so The support block 4 can be easily formed.
- the frame body portion 33 for locking the support block 4 is disposed on the lower surface or the side surface of the leg portion 34.
- the leg part 34 is comprised by the raw material of the same quality as the raw material which forms the tank 3, for example.
- the shapes of the support block bottom surface 41 and the support surface 22a are set by the same method as that of the first embodiment described above, with the leg portion 34 regarded as a part of the tank 3. That is, the support block bottom surface 41 and the support surface 22a of the support base portion 22 are line segments connecting two contact points (first contact point C and second contact point C ′) with the tank 3 in each of the support blocks 4. It becomes a plane parallel to the plane S including CC ′ and a straight line Lf passing through the fixed point F of the tank 3 and parallel to the line segment CC ′.
- the support block bottom surface 41 and the support surface 22a of the support base 22 have two contact points (first contact point C and second contact point C ′) at the same height (horizontal position),
- first contact point C and second contact point C ′ at the same height (horizontal position)
- segment CC ′ is set in parallel to the side wall portion 35, it is formed so as to have a plane including the perpendicular line Lc and parallel to a plane extending in the center line direction Lm (the sectional view coincides with the straight line Lp).
- the support block bottom surface 41 and the support surface 22a of the support base 22 include a straight line connecting the first contact point C and the fixed point F, and a straight line connecting the second contact point C ′ and the fixed point F. In other words, it can be said to have a plane parallel to the plane including the plane (this plane coincides with the plane S).
- the tank support structure according to the third embodiment shown in FIG. 3B includes a multistage surface 25 formed on the side surface portion of the accommodating portion 2 and a plurality of support base portions 22 arranged on the multistage surface 25. It is.
- the accommodating part 2 has the multistage surface 25
- the bottom face part 31 of the tank 3 has the part (multistage part 31c) which opposes the multistage surface 25 as shown in figure.
- the support base portion 22 may be arranged at each step portion, You may make it arrange
- the multistage surface 25 of the accommodating portion 2 and the multistage portion 31c of the tank 3 facing each other have substantially horizontal surfaces.
- the support block bottom surface 41 and the support surface 22a have two contact points (the first contact points C1, C2 and the second contact point C1 ′) with the tank 3 in each of the support blocks 4. , C2 ′) and a plane parallel to planes S1, S2 including line segments C1C1 ′, C2C2 ′ and straight lines Lf1, Lf2 passing through the fixed point F of the tank 3 and parallel to the line segments C1C1 ′, C2C2 ′. Formed to have.
- the support block bottom surface 41 and the support surface 22a have two contact points (first contact points C1, C2 and second contact points C1 ′, C2 ′) at the same height (horizontal position),
- first contact points C1, C2 and second contact points C1 ′, C2 ′ at the same height (horizontal position)
- the minutes C1C1 ′ and C2C2 ′ are set in parallel with the side wall portion 35, they have planes including the straight lines Lc1 and Lc2 and parallel to the plane extending in the center line direction Lm (the sectional view coincides with the straight lines Lp1 and Lp2). Formed as follows.
- first contact points C1, C2 and second contact points C1 ′, C2 ′ in each of the support blocks 4 have the same height (horizontal position) in each, and line segments C1C1 ′, When C2C2 ′ is set parallel to the side wall portion 35, the straight line Lf1 and the straight line Lf2 coincide.
- the support block bottom surface 41 and the support surface 22a of the support base 22 at a certain position are a straight line connecting the first contact point C1 and the fixed point F, and a straight line connecting the second contact point C1 'and the fixed point F.
- the support block bottom surface 41 and the support surface 22a of the support base portion 22 at other positions are fixed to the first contact point C2 and fixed to the plane including the plane (this plane coincides with the plane S1). In other words, it has a plane parallel to a plane including the straight line connecting the point F and the straight line connecting the second contact point C2 ′ and the fixed point F (this plane coincides with the plane S2).
- the first contact point C is C1
- the perpendicular Lc is Lc1
- the second contact point C 'is C1' the perpendicular Lc 'is Lc1'
- the plane S is It shall be read as S1.
- a support base portion 26 that supports the vertical load of the tank 3 is disposed on the bottom surface portion 23, and the tank 3 You may make it arrange
- the tank support structure according to the fourth embodiment shown in FIG. 4A assumes a case where the container 2 has a multistage surface 25 in the hull (main body 5) in which the bottom of the floating structure 1 is formed wide. Is. That is, the tank support structure according to the fourth embodiment is similar to the third embodiment in that the multistage surface 25 formed on the side surface portion of the accommodating portion 2 and the plurality of support base portions 22 arranged on the multistage surface 25 are provided. And have.
- the support block bottom surface 41 and the support surface 22a are line segments connecting two contact points (first contact points C1, C2 and second contact points C1 ', C2') with the tank 3 in each of the support blocks 4.
- C1C1 ′, C2C2 ′ and a straight line Lf1, Lf2 passing through the fixed point F of the tank 3 and parallel to the line segments C1C1 ′, C2C2 ′ are formed to have a plane parallel to the planes S1, S2.
- the support block bottom surface 41 and the support surface 22a have two contact points (first contact points C1, C2 and second contact points C1 ′, C2 ′) at the same height (horizontal position),
- first contact points C1, C2 and second contact points C1 ′, C2 ′ at the same height (horizontal position)
- the minutes C1C1 ′ and C2C2 ′ are set in parallel with the side wall portion 35, they have planes including the straight lines Lc1 and Lc2 and parallel to the plane extending in the center line direction Lm (the sectional view coincides with the straight lines Lp1 and Lp2). Formed as follows.
- first contact points C1, C2 and second contact points C1 ′, C2 ′ in each of the support blocks 4 have the same height (horizontal position) in each, and line segments C1C1 ′, When C2C2 ′ is set parallel to the side wall portion 35, the straight line Lf1 and the straight line Lf2 coincide.
- the support block bottom surface 41 and the support surface 22a of the support base 22 at a certain position are a straight line connecting the first contact point C1 and the fixed point F, and a straight line connecting the second contact point C1 'and the fixed point F.
- the support block bottom surface 41 and the support surface 22a of the support base portion 22 at other positions are fixed to the first contact point C2 and fixed to the plane including the plane (this plane coincides with the plane S1). In other words, it has a plane parallel to a plane including the straight line connecting the point F and the straight line connecting the second contact point C2 ′ and the fixed point F (this plane coincides with the plane S2).
- the first contact point C is C1
- the perpendicular Lc is Lc1
- the plane S is It shall be read as S1.
- the floating structure 1 may have a multi-stage surface 25 as shown in the figure other than the bow or stern due to the relationship in arrangement of piping and other inboard equipment and the shape of cargo to be loaded. .
- the multi-step surface 25 is easily formed.
- the area of the bottom surface portion 23 of the housing portion 2 may not be large enough to support the tank 3. If it does so, the shape of the tank 3 had to be made small according to the area of the bottom face part 23 of the accommodating part 2, and it became the cause of reducing volumetric efficiency.
- the outer shape of the tank 3 is designed in accordance with the shape of the housing portion 2 even when the housing portion 2 has the multi-stage surface 25.
- the bottom surface portion 31 (multistage portion 31c) of the tank 3 with the multistage surface 25 it is possible to improve the volumetric efficiency and relax the design constraints.
- the tank support structure according to the fifth embodiment shown in FIG. 4B is inclined without forming the bottom surface portion 31 of the tank 3 in multiple stages when the accommodating portion 2 has the multiple stage surfaces 25. This case is assumed (when the inclined portion 31a is formed).
- the bottom surface portion 31 (inclined portion 31a) of the tank 3 is directed downward. What is necessary is just to arrange
- the accommodating portion 2 has the inclined surface 21 and the multi-step surface 25, and the bottom surface portion 23 is sufficient to support the vertical load of the tank 3. Even when the area cannot be secured, the vertical load of the tank 3 can be supported by using the inclined surface 21 and the multistage surface 25. And the shape of the tank 3 can be formed along the inclined surface 21 and the multistage surface 25, and volumetric efficiency can be improved. In addition, by appropriately combining the embodiments, even in the housing portion 2 having a complicated shape, it is possible to form and arrange a tank 3 with high volumetric efficiency that matches the shape of the housing portion 2.
- FIG. 5 is a diagram showing a fixed point in a parallel tank
- FIG. 5A is a case where the depth is wide
- FIG. 5B is a case where the depth is narrow
- FIG. 5C is a positional relationship between two contact points and a fixed point.
- 6A and 6B are diagrams showing a fixed point in the tapered tank.
- FIG. 6A shows a positional relationship between two contact points and a fixed point when FIG. 6A shows a case where the depth is wide
- FIG. 6B shows a case where the depth is narrow
- FIG. FIG. 6D shows a modification of the positional relationship between two contact points and a fixed point.
- each figure has shown the horizontal sectional view of the main-body part 5, and the tank 3 and the support base part 22 are shown with the broken line for convenience of explanation.
- FIG. 5A to 5C show a case where the tank 3 is a parallel tank having parallel side wall portions 35.
- the fixed point F is formed by the locking base portion 24.
- at least a pair of locking base portions 24 are disposed along the center line direction Lm of the floating structure 1, and at least a pair of the locking base portions 24 along the width direction Lw perpendicular to the center line direction Lm.
- a fixed point F is formed at the intersection of the center line direction Lm and the width direction Lw.
- the locking base portion 24 arranged along the center line direction Lm regulates the movement in the width direction Lw while allowing the movement of the tank 3 in the center line direction Lm.
- the locking base portion 24 arranged along the width direction Lw restricts the movement of the tank 3 in the center line direction Lm while allowing the movement of the tank 3 in the width direction Lw direction.
- the fixed point F is generally the center point of the bottom surface of the tank 3. Placed in.
- the fixed point F can be formed at an arbitrary position depending on the type and posture of the floating structure 1, the arrangement position of the tank 3, and the like.
- three or more locking base portions 24 may be arranged in each of the center line direction Lm and the width direction Lw.
- At least one locking base portion 24 is disposed along the center line direction Lm of the floating structure 1.
- a fixed point F is set at the intersection of the center line direction Lm and the width direction Lw. You may make it form.
- the fixed point F can be set at an arbitrary position by the locking base portion 24 that restricts the movement of the tank 3 in the center line direction Lm or the width direction Lw.
- a part or all of the support base portion 22 that supports the support block 4 disposed on the tank bottom surface portion 31 facing the inclined surface or the multi-section of the accommodating portion 2 is fixed to the locking base portion 24. You may make it replace with.
- the support block bottom surface 41 and the support surface 22a are connected to the tank 3 in each of the support blocks 4.
- the plane S includes a perpendicular line Lc dropped from the first contact point C to the straight line Lf and a perpendicular line Lc ′ dropped from the second contact point C ′ to the straight line Lf.
- the straight line Lf is in the direction of the center line as shown in the figure. It matches Lm.
- the plane S coincides with a plane including a straight line connecting the first contact point C and the fixed point F and a straight line connecting the second contact point C ′ and the fixed point F.
- the support block bottom surface 41 and the support surface 22a of the support base portion 22 at other positions are two contact points (first contact point C2 and second contact point C2 ') with the tank 3 in each of the support blocks 4.
- the straight line Lf2 is in the direction of the center line as shown in the figure. It matches Lm.
- the plane S2 coincides with a plane including a straight line connecting the first contact point C2 and the fixed point F and a straight line connecting the second contact point C2 ′ and the fixed point F.
- the support block 4 and the support base portion 22 are illustrated as being arranged four each on the left and right for convenience of explanation, but the arrangement (number of matrixes) and the number of the support block 4 and the support base portion 22 are illustrated. It is not limited to what was done.
- the fixed point F is formed by the locking base portion 24.
- at least a pair of locking base portions 24 are disposed along the center line direction Lm of the floating structure 1, and at least a pair of the locking base portions 24 along the width direction Lw perpendicular to the center line direction Lm.
- a fixed point F is formed at the intersection of the center line direction Lm and the width direction Lw.
- the locking base portion 24 arranged along the center line direction Lm regulates the movement in the width direction Lw while allowing the movement of the tank 3 in the center line direction Lm.
- the locking base portion 24 arranged along the width direction Lw restricts the movement of the tank 3 in the center line direction Lm while allowing the movement of the tank 3 in the width direction Lw direction.
- the fixed point F is, for example, the center of the tank 3. It arrange
- the fixed point F can be formed at an arbitrary position depending on the type and posture of the floating structure 1.
- the side wall portion 35 of the tapered tank is generally formed in accordance with the shape of the main body portion 5, may be a tapered surface, or may be curved along the main body portion 5. Furthermore, even when the main body 5 has a parallel shape as shown in FIG. 5A, a tapered tank as shown in FIG. 6A may be used depending on the structure inside the main body 5. In addition, considering the rotation of the tank 3 and the horizontal load of the tank 3, three or more locking base portions 24 may be arranged in each of the center line direction Lm and the width direction Lw.
- At least one locking base portion 24 is disposed along the center line direction Lm of the floating structure 1.
- a fixed point F is set at the intersection of the center line direction Lm and the width direction Lw. You may make it form.
- the fixed point F can be set at an arbitrary position by the locking base portion 24 that restricts the movement of the tank 3 in the center line direction Lm or the width direction Lw.
- a part or all of the support base portion 22 that supports the support block 4 disposed on the tank bottom surface portion 31 facing the inclined surface or the multi-section of the accommodating portion 2 is fixed to the locking base portion 24. You may make it replace with.
- the support block 4 and the support base 22 are, for example, the side wall 35 of the tank 3. It is arranged in the direction along.
- the support block bottom surface 41 and the support surface 22a define two contact points (first contact point C and second contact point C ′) with the tank 3 in each of the support blocks 4. It has a plane parallel to the plane S including the connecting line segment CC ′ and a straight line Lf passing through the fixed point F of the tank 3 and parallel to the line segment CC ′.
- the plane S includes a perpendicular line Lc dropped from the first contact point C to the straight line Lf and a perpendicular line Lc ′ dropped from the second contact point C ′ to the straight line Lf. Further, the plane S coincides with a plane including a straight line connecting the first contact point C and the fixed point F and a straight line connecting the second contact point C ′ and the fixed point F.
- the support block 4 and the support base portion 22 may be arranged in a direction along the center line direction Lm and the width direction Lw.
- the support block bottom surface 41 and the support surface 22a have two contact points (the first contact point C and the second contact point) with the tank 3 in each of the support blocks 4. C ′) and a plane parallel to the plane S including the straight line Lf passing through the fixed point F of the tank 3 and parallel to the line segment CC ′. That is, the plane S includes a perpendicular line Lc dropped from the first contact point C to the straight line Lf and a perpendicular line Lc ′ dropped from the second contact point C ′ to the straight line Lf.
- the straight line Lf is the center line as shown in the figure. It coincides with the direction Lm.
- the plane S coincides with a plane including a straight line connecting the first contact point C and the fixed point F and a straight line connecting the second contact point C ′ and the fixed point F.
- the support block 4 and the support base portion 22 are illustrated as being arranged on the right side of the drawing for convenience of explanation, but the arrangement of the support block 4 and the support base portion 22 (the number of matrices) is illustrated. ) And the number are not limited to those illustrated.
- FIG. 7 is a diagram showing a tank support structure according to a sixth embodiment of the present invention
- FIG. 7A is an overall configuration diagram of the floating structure
- FIG. 7B is an overall configuration plan view of the floating structure
- FIG. 7C is a cross-sectional view taken along the line CC in FIG. 7B.
- symbol is attached
- compartments (accommodating portions 2) that are long in the front-rear direction and short in the width direction are arranged.
- the main body 5 constituting the outer shell of the compartment (accommodating portion 2) has a streamline shape in which the bottom portion is gradually inclined upward, and the compartment (accommodating portion 2) is
- positioned in this division (accommodating part 2) also has a horizontal bottom face and an inclined bottom face so that it may have a horizontal bottom face and an inclined bottom face so that the shape of the main-body part 5 may be followed.
- the tank 3 in the first embodiment is divided into two parts.
- a tank 3 having a shape is used.
- the bottom surface portion 31 of the tank 3 includes a horizontal portion 31 b that faces the bottom surface portion 23 of the storage portion 2, and an inclined portion 31 a that faces the inclined surface 21 formed on the side surface of the storage portion 2.
- the locking base portion 24 is set so that the fixed point F is set to the bottom surface portion 31 (horizontal portion 31 b) of the tank 3. Is placed.
- the tank support structure according to the first embodiment has been described as a reference, but the configurations according to the second to fifth embodiments may be applied as appropriate.
- vertical load means a load that acts in the vertical direction when the floating structure 1 is supported on a still water surface.
- Total load means a load acting in the horizontal direction when the floating structure 1 is supported on a still water surface.
- the present invention is not limited to the above-described embodiment, and the present invention can be applied even when the accommodating portion 2 has the inclined surface 21 and the tank 3 has a multistage surface.
- various changes can be made without departing from the scope.
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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
Description
2 収容部
3 タンク
4 支持ブロック
5 本体部
6 係止ブロック
21 傾斜面
22 支持基礎部
22a 支持面
24 係止基礎部
25 多段面
31 底面部
32,33 枠体部
34 脚部
35 側壁部
41 支持ブロック底面
Claims (10)
- 浮体構造物に形成された収容部に搭載されるタンクのタンク支持構造において、
前記収容部の側面部に形成された傾斜面又は多段面と、該傾斜面又は該多段面上に配置された複数の支持基礎部と、前記傾斜面又は前記多段面と対峙する部分を含む前記タンクの底面部に配置されるとともに前記支持基礎部上に配置される複数の支持ブロックと、を備え、
前記支持ブロックの前記支持基礎部上に配置される支持ブロック底面と、前記支持基礎部の前記支持ブロックを支持する支持面とは、前記支持ブロックのそれぞれにおける前記タンクとの二つの接触点を結ぶ線分と、前記タンクの不動点を通り前記線分に平行な直線と、を含む平面に平行な面を有する、
ことを特徴とするタンク支持構造。 - 前記収容部の底面中央部に配置された係止基礎部と、前記タンクの底面中央部に配置されるとともに前記係止基礎部上に配置される係止ブロックと、を有し、前記不動点は、前記係止基礎部に前記係止ブロックを係止させることによって形成される、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記不動点は、前記浮体構造物の中心線方向に沿って少なくとも一つの前記係止基礎部が配置され、前記中心線方向と垂直な幅方向に沿って少なくとも一つの前記係止基礎部が配置されることによって、前記中心線方向と前記幅方向との交点に形成される、ことを特徴とする請求項2に記載のタンク支持構造。
- 前記二つの接触点のうち少なくとも一つは、前記不動点から最も離れた前記支持ブロックと前記タンクとの接触点である、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記支持面は、傾斜方向に前記支持ブロック底面よりも幅広に形成されている、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記タンクの底面部は、前記傾斜面又は前記多段面と対峙する部分の面積が、前記収容部の底面部と対峙する部分よりも大きく形成されている、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記タンクは、前記支持ブロックを係止する枠体部を有する、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記タンクは、下方に向かって突出した脚部を備え、該脚部に前記支持ブロックが配置され、前記脚部を前記タンクの一部として前記支持ブロック底面及び前記支持面を形成する、ことを特徴とする請求項1に記載のタンク支持構造。
- 前記タンクは、前記浮体構造物の中心線方向に沿って一定の幅を有する側壁部又は浮体構造物の中心線方向に沿って幅が変化する側壁部を有する、ことを特徴とする請求項1に記載のタンク支持構造。
- 浮力により水上に支持される本体部と、該本体部に形成されるとともにタンクが搭載される収容部と、を有する浮体構造物において、
前記タンクは、請求項1~請求項9のいずれかに記載のタンク支持構造により、前記収容部に搭載されている、ことを特徴とする浮体構造物。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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PL12823600T PL2743172T3 (pl) | 2011-08-12 | 2012-07-20 | Konstrukcja podporowa zbiornika i konstrukcja pływająca |
BR112014003047A BR112014003047A2 (pt) | 2011-08-12 | 2012-07-20 | estrutura de suporte de tanque para um tanque, e, construção flutuante |
KR1020147006591A KR101579227B1 (ko) | 2011-08-12 | 2012-07-20 | 탱크 지지 구조 및 부체 구조물 |
EP12823600.7A EP2743172B1 (en) | 2011-08-12 | 2012-07-20 | Tank support structure and floating construction |
CN201280050097.6A CN103874628B (zh) | 2011-08-12 | 2012-07-20 | 储罐支撑结构及浮体结构物 |
US14/238,406 US9010262B2 (en) | 2011-08-12 | 2012-07-20 | Tank support structure and floating construction |
ES12823600.7T ES2661537T3 (es) | 2011-08-12 | 2012-07-20 | Estructura de soporte de tanque y construcción flotante |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2011176833A JP5732347B2 (ja) | 2011-08-12 | 2011-08-12 | タンク支持構造及び浮体構造物 |
JP2011-176833 | 2011-08-12 |
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WO2013024661A1 true WO2013024661A1 (ja) | 2013-02-21 |
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PCT/JP2012/068452 WO2013024661A1 (ja) | 2011-08-12 | 2012-07-20 | タンク支持構造及び浮体構造物 |
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US (1) | US9010262B2 (ja) |
EP (1) | EP2743172B1 (ja) |
JP (1) | JP5732347B2 (ja) |
KR (1) | KR101579227B1 (ja) |
CN (1) | CN103874628B (ja) |
BR (1) | BR112014003047A2 (ja) |
ES (1) | ES2661537T3 (ja) |
PL (1) | PL2743172T3 (ja) |
WO (1) | WO2013024661A1 (ja) |
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CN104554635A (zh) * | 2013-10-29 | 2015-04-29 | (株)健洋船舶设计 | 独立液货舱用支承装置及具备该装置的运输船 |
EP2985219A4 (en) * | 2013-04-08 | 2016-12-07 | Nobuyoshi Morimoto | LIQUID NATURAL GAS VEHICLES |
EP2985218A4 (en) * | 2013-04-12 | 2016-12-07 | Nobuyoshi Morimoto | MÉTHANIER OR CARRIER OF LPG GAS |
RU2658192C2 (ru) * | 2013-04-12 | 2018-06-19 | Нобуеси Моримото | Судно для спг или снг |
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CN106143794B (zh) * | 2015-03-25 | 2018-04-17 | 江南造船(集团)有限责任公司 | A型独立液货舱止浮装置中环氧树脂的敷设方法 |
CN106143793B (zh) * | 2015-03-25 | 2018-05-15 | 江南造船(集团)有限责任公司 | 液化气船防横摇支承结构的限位框中环氧树脂敷设方法 |
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JP6788020B2 (ja) * | 2015-12-30 | 2020-11-18 | コリア シップビルディング アンド オフショア エンジニアリング カンパニー リミテッド | 液化ガス運搬船 |
CN106143806B (zh) * | 2016-08-29 | 2018-05-22 | 上海斯达瑞船舶海洋工程服务有限公司 | 一种船用独立液罐的支撑装置 |
CN108116622B (zh) * | 2017-11-22 | 2019-12-20 | 上海船舶研究设计院(中国船舶工业集团公司第六0四研究院) | 独立液货舱限位组件及船舶 |
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CN103874628B (zh) | 2016-08-17 |
PL2743172T3 (pl) | 2018-05-30 |
EP2743172B1 (en) | 2017-12-06 |
EP2743172A1 (en) | 2014-06-18 |
US20140190393A1 (en) | 2014-07-10 |
EP2743172A4 (en) | 2015-07-22 |
KR101579227B1 (ko) | 2015-12-21 |
JP2013039866A (ja) | 2013-02-28 |
CN103874628A (zh) | 2014-06-18 |
KR20140050099A (ko) | 2014-04-28 |
JP5732347B2 (ja) | 2015-06-10 |
US9010262B2 (en) | 2015-04-21 |
ES2661537T3 (es) | 2018-04-02 |
BR112014003047A2 (pt) | 2017-03-07 |
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