EP2896868B1 - Contenant sous pression de stockage de marchandises liquides - Google Patents

Contenant sous pression de stockage de marchandises liquides Download PDF

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Publication number
EP2896868B1
EP2896868B1 EP13795986.2A EP13795986A EP2896868B1 EP 2896868 B1 EP2896868 B1 EP 2896868B1 EP 13795986 A EP13795986 A EP 13795986A EP 2896868 B1 EP2896868 B1 EP 2896868B1
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EP
European Patent Office
Prior art keywords
reinforcing
pressure vessel
plate
reinforcing elements
liquids
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.)
Not-in-force
Application number
EP13795986.2A
Other languages
German (de)
English (en)
Other versions
EP2896868A4 (fr
EP2896868A1 (fr
Inventor
Myung-Sup Lee
Dong-Dae Lee
Wha-Soo Kim
Byeong-Jae NOH
Sang-Beom SHIN
Byung-Ki Choi
Dae-Soo Kim
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.)
HD Hyundai Heavy Industries Co Ltd
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Hyundai Heavy Industries Co Ltd
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Filing date
Publication date
Application filed by Hyundai Heavy Industries Co Ltd filed Critical Hyundai Heavy Industries Co Ltd
Publication of EP2896868A1 publication Critical patent/EP2896868A1/fr
Publication of EP2896868A4 publication Critical patent/EP2896868A4/fr
Application granted granted Critical
Publication of EP2896868B1 publication Critical patent/EP2896868B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing 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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/08—Integral reinforcements, e.g. ribs
    • 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
    • F17C2203/01—Reinforcing or suspension means
    • F17C2203/011—Reinforcing means
    • F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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, in general, to a pressure vessel for storing liquids in bulk, and more particularly, to a pressure vessel for storing liquids in bulk which forms a space for storing liquids by combining a plurality of first reinforcing plates each having a creased cross-sectional structure formed by groove parts and ridge parts with at least one second reinforcing plate having a flat plate cross-sectional structure.
  • an LNG carrier is used to transport liquids in bulk, such as liquefied natural gas, from a producing base to a terminal of an accepting base.
  • the LNG carrier is typically provided with pressure vessels for storing liquids therein.
  • FIG. 1 is a front view illustrating the construction of a related art pressure vessel for storing liquefied natural gas (LNG).
  • FIG. 2 is a perspective view illustrating the construction of a reinforcing plate that constitutes the related art pressure vessel.
  • LNG liquefied natural gas
  • a plurality of reinforcing plates 10 are combined with each other such that a sealed space S for storing liquids is formed in the pressure vessel V.
  • each of the reinforcing plates 10 comprises an external plate 11 having a flat plate structure, and a plurality of reinforcing elements 12 that are mounted to the inner surface of the external plate 11, wherein the function of the reinforcing elements 12 is intended to prevent the external plate 11 from being structurally deformed by a temperature difference generated in the vessel when loading and unloading liquids or by an external force.
  • the reinforcing elements 12 also provide the desired structural strength of the pressure vessel.
  • the reinforcing elements 12 comprise a plurality of first reinforcing elements 12a that extend along the axial directions of the external plate, and second reinforcing elements 12b that extend such that they cross the first reinforcing elements 12a at right angles.
  • FIG. 3 is a view illustrating an example of bending moment that is induced in the external plate by an internal pressure of the pressure vessel.
  • FIG. 4 is a view illustrating a reduction in the effective width of the external plate, wherein the effective width may be reduced by the cross-section and shear lag effects of the reinforcing elements which may be induced by the internal pressure of the pressure vessel.
  • the external plate 11 is configured to have a simple flat plate structure, so the bending moment of FIG. 3 is induced in the external plate 11. Accordingly, it is required to arrange the first reinforcing elements 12a at intervals less than 1m.
  • the pressure vessel In the related art pressure vessel, it is required to arrange the first reinforcing elements 12a at intervals less than 1m, so the pressure vessel is problematic in that the numbers of the first and second reinforcing elements 12a and 12b of the pressure vessel are increased, thereby increasing the production cost and weight of the pressure vessel and reducing the storage capacity of the pressure vessel.
  • the stress distribution on the flat plate type external plate 11 is uneven, and the height H of the first reinforcing elements 12a is low, so the modulus of section of the first reinforcing elements 12a is low. Further, shear lag effects are generated in the external plate, so the structural strength and rigidity of the reinforcing plates are reduced deteriorating the functional efficiency of the reinforcing plates used as structural elements.
  • the present applicant developed a reinforcing plate for pressure vessels which has an improved structure.
  • the reinforcing plate developed by this applicant is disclosed in Korean Patent Application No. 2011-0106218 .
  • FIG. 5 is a perspective view illustrating the construction of a reinforcing plate having a creased cross-sectional structure.
  • an external plate 21 that has a creased structure is provided, in which a plurality of ridge parts 21a are formed in the creased external plate, with first reinforcing elements 22a mounted to the respective ridge parts 21a of the external plate 21.
  • the above-mentioned reinforcing plate for pressure vessels is advantageous in that a bending stress that may be induced in the external plate due to the cross-sectional shape of the creased external plate 21 can be changed to a hoop stress, and the bending stress can be reduced in comparison with the related art reinforcing plate having the flat plate type external plate 11. Further, the height of each of the first reinforcing elements is increased by the height of the ridge part of the external plate, so the structural strength and rigidity of the reinforcing plate can be increased and the functional efficiency of the reinforcing plate used as a structural element can be improved.
  • the pressure vessel that is formed using the reinforcing plates each having the creased external plate is problematic in that liquids stagnate in the groove parts 22a of a reinforcing plate that forms the bottom of the pressure vessel, so the liquids cannot easily flow.
  • the liquids that stagnate in the groove parts of the reinforcing plate may not be unloaded causing problems.
  • Patent Document 1 Korean Patent Application Publication No. 10-2011-0106218 (2011.09.28 28).
  • WO2008133785A1 discloses a liquid-tight, self-supporting storage container including a support frame fixedly attached to at least one top panel, at least one bottom assembly, and a plurality of corrugated side panels, wherein the support frame is externally disposed around the storage container and configured to operably engage at least a portion of a hull of a marine vessel.
  • US2975927A discloses a storage tank facilitating the complete drainage of the tank.
  • KR20120001995A discloses a liquid gas storage and transporting tank, with heat insulation connected to the outer panel and multiple steel strengthening parts installed at inner surface of the panel.
  • an object of the present invention is to provide a pressure vessel for storing liquids in bulk, which is formed by combining reinforcing plates that have a creased cross-sectional structure having groove parts and ridge parts, and in which part of the surfaces of the pressure vessel is formed using reinforcing plates having a flat plate cross-section, so liquids can easily flow in the pressure vessel and the pressure vessel can be easily produced.
  • Another object of the present invention is to provide a pressure vessel for storing liquids in bulk, the bottom of which is formed using a reinforcing plate having a flat plate cross-section, so, when unloading liquids from the pressure vessel, the liquids can be easily discharged from the pressure vessel without stagnating in specific parts of the pressure vessel.
  • a further object of the present invention is to provide a pressure vessel for storing liquids in bulk, in which, when the pressure vessel is used in a ship having a double-bottomed hull structure, the pressure vessel is configured such that the lower end of a sidewall thereof is shaped as an inclined structure corresponding to the double-bottomed hull structure, thereby realizing a maximum volume capacity of the pressure vessel, and the inclined part is formed at a corner, at which a bottom reinforcing plate having a flat structure meets two side reinforcing plates having a creased structure, in such a way that the inclined part is inclined upward to the two side reinforcing plate, thereby allowing the three reinforcing plates to be naturally and efficiently combined with each other.
  • the present invention provides a pressure vessel for storing liquids in bulk, according to the independent claim 1.
  • the pressure vessel may further comprise: a second outer reinforcing element 150 installed outside a first reinforcing plate 100a constituting left/right side walls V1 of the pressure vessel such that the second outer reinforcing element 150 forms a structure continued to a first outer reinforcing element 140c installed on a first reinforcing plate 100c constituting a ceiling wall V3 of the pressure vessel.
  • the pressure vessel may further comprise: a face part 131 installed on an end of each of the second inner reinforcing elements 130 so as to increase the strength of the end of the second inner reinforcing element, the face part being formed by two rows of face parts.
  • connection reinforcing element 250 may comprise a plate that extends along a curvature of the groove part 101 while maintaining a constant width.
  • the external plate 210 of the second reinforcing plate may comprise an inclined plate that can collect liquids by allowing the liquids to flow down to a desired place when unloading liquids.
  • a lower end 100-1 of a first reinforcing plate 100a constituting left/right side walls V1 of the pressure vessel may be inclined inward to an interior of the pressure vessel, and a three-face connecting element 300 may be installed at a corner of the pressure vessel, at which two first reinforcing plates 100a and 100b and the second reinforcing plate 200 meet each other, wherein the three-face connecting element 300 may extend from the second reinforcing plate 200 to the two first reinforcing plates 100a and 100b while being inclined upward, so the two first reinforcing plates 100a and 100b and the second reinforcing plate 200 can be connected to each other by the three-face connecting element.
  • groove parts 101' provided on front and rear ends of a first reinforcing plate 100a constituting left/right side walls V1 of the pressure vessel are configured to form a radius of curvature different from that of other groove parts 101.
  • the present invention when manufacturing the pressure vessel for storing liquids in bulk using reinforcing plates having a creased cross-sectional structure, part of the pressure vessel is formed using a reinforcing plate having a flat plate cross-sectional structure, thereby forming a structural environment capable of allowing stored liquids to efficiently flow in the pressure vessel.
  • the present invention when forming the bottom of the pressure vessel using the reinforcing plate having the flat plate cross-sectional structure, the present invention can prevent liquids from stagnating in specific parts of the pressure vessel when unloading the liquids from the pressure vessel, so the present invention is advantageous in that liquid unloading can be more efficiently performed.
  • Another advantage of the present invention resides in that this invention can improve the manufacturing and maintenance efficiency of the pressure vessel.
  • Still another advantage of the present invention resides in that, when using the pressure vessel in a ship having a double-bottomed structure, the lower ends of part of the reinforcing plates are configured to be inclined, and a three-face connecting element is provided at a corner at which two reinforcing plates, each having a creased cross-sectional structure, meet one reinforcing plate having a flat plate cross-sectional structure, so the present invention can realize a natural and efficient combination of the three reinforcing plates, can protect the pressure vessel from stress concentration, and can provide a structurally stable pressure vessel.
  • a further advantage of the present invention resides in that the reinforcing plates having the creased cross-sectional structure and the reinforcing plate having the flat plate cross-sectional structure are combined with each other using first, second and third bottom reinforcing elements in such a way that the reinforcing plates can maintain structural continuity and the connection reinforcing elements can efficiently distribute stress, so the present invention can realize improved structural stability of the pressure vessel.
  • FIG. 6 is a perspective illustrating the interior construction of a pressure vessel according to a preferred embodiment of the present invention.
  • FIG. 7 is a perspective illustrating the exterior construction of the pressure vessel according to the preferred embodiment of the present invention.
  • FIG. 8 is a perspective illustrating the exterior construction of the pressure vessel according to the preferred embodiment of the present invention, which is viewed from another angle.
  • FIG. 9 is a perspective view illustrating the construction of a pressure vessel fabricated using only external plates.
  • FIG. 10 is a front view illustrating the construction of an external plate of a second reinforcing plate having an inclined structure.
  • FIG. 11 is a detailed view illustrating the installation structure of a connection reinforcing element according to the present invention.
  • FIG. 12 is a perspective view illustrating the construction of a corner at which two first reinforcing plates and one second reinforcing plate meet each other.
  • FIG. 13 is a perspective view illustrating the installation structure of a three-face connecting element according to the present invention.
  • FIG. 14 is a plan view illustrating the connected structure of two neighboring first reinforcing elements.
  • the pressure vessel for storing liquids in bulk includes a plurality of first reinforcing plates 100 having a creased cross-sectional structure, and at least one second reinforcing plate 200 having a flat plate cross-sectional structure.
  • the present invention can improve the manufacturing and maintenance efficiency of the pressure vessel.
  • the present invention also provides a structural environment that can allow stored liquids to efficiently flow in the pressure vessel without stagnating in specific parts of the pressure vessel, so, when unloading liquids from the pressure vessel, the liquids can be easily discharged from the pressure vessel.
  • FIG. 6 a quarter of the pressure vessel is shown so as one to illustrate the interior construction of the pressure vessel in detail, so only a left side wall, a front wall and a the ceiling wall of the pressure vessel are shown in the drawing.
  • the right side wall and the rear wall are symmetric to the left side wall and the front wall, respectively, so the right side wall and the rear wall are not shown in the drawing.
  • the left/right side walls are designated by reference character V1
  • the front/rear walls are designated by V2
  • the ceiling wall is designated by V3
  • a bottom wall is designated by V4.
  • Each of the first reinforcing plates 100 is configured such that a groove part 101 and a ridge part 102 are repeatedly arranged and form a creased cross-sectional structure.
  • the left/right side walls V1, the front/rear walls V2 and the ceiling wall V3 are formed using the first reinforcing plates 100.
  • first reinforcing plate 100 comprises an external plate 110, a first inner reinforcing element 120, a second inner reinforcing element 130, and a first outer reinforcing element 140.
  • the external plate 110 is configured such that the groove part 101 and the ridge part 102 are repeatedly arranged and form the creased cross-sectional structure.
  • the cross-sectional shape of the groove part 101 may be configured as a concave tile shape, an arc shape, a semicircular shape, a semi-elliptical shape, a trapezoidal shape or a polygonal shape.
  • the first inner reinforcing element 120 is installed along the ridge part 102 of the external plate 110, thereby having an extension structure extending along the ridge part 102.
  • the first inner reinforcing element 120 may be installed on each of the plurality of ridge parts 102 of the external plate 110, so the first inner reinforcing element 120 comprises a plurality of elements.
  • the first inner reinforcing element 120 has a structure protruding inward in the pressure vessel.
  • the first inner reinforcing element 120 may be formed as an angle steel having a T-shaped or an L-shaped cross-section.
  • the second inner reinforcing element 130 is installed on the inner surface of the external plate 110 such that the second inner reinforcing element 130 crosses the plurality of first inner reinforcing elements 120.
  • the second inner reinforcing element 130 comprises a plurality of second inner reinforcing elements 130 that are arranged such that they are spaced apart from each other at regular intervals.
  • a face part 131 that is formed by two rows of face parts is installed on the inner end of each of the second inner reinforcing elements 130 so as to increase the strength of the inner end.
  • the first outer reinforcing element 140 is arranged such that it extends along the second inner reinforcing element 130 at a location outside the external plate 110.
  • the first outer reinforcing element 140 comprises a plurality of first outer reinforcing elements 140 in the same manner as that described for the second inner reinforcing element 130.
  • the plurality of groove parts 101 and the plurality of ridge parts 102 which are provided on the first reinforcing plate 100, are connected to each other both by the second inner reinforcing elements 130 and by the first outer reinforcing elements 140.
  • the first reinforcing plate 100 can avoid deformation caused by a temperature difference generated in the pressure vessel according to unloading of liquids or by an external force applied thereto.
  • the groove parts and the ridge parts function as reinforcing elements, so the reinforcing plate can efficiently avoid axial deformation.
  • the reinforcing plate cannot efficiently resist width-directional deformation, so the groove parts and the ridge parts may expand or contract due to a temperature difference generated in the pressure vessel according to unloading of liquids or by an external force applied thereto.
  • the plurality of groove parts 101 and the plurality of ridge parts 102 are connected to each other using both the second inner reinforcing elements 130 and the first outer reinforcing elements 140 as described above, so the first reinforcing plate 100 can avoid deformation caused by expansion and contraction thereof and can provide a pressure vessel having structural stability.
  • the cross-sectional shape of the external plate 110 of the first reinforcing plate 100 having the above-mentioned construction is configured as a concave tile shape, an arc shape, a semicircular shape or a semi-elliptical shape
  • the bending stress that acts in the external plate 110 due to the pressure of liquids stored in the pressure vessel is changed into hoop stress.
  • the cross-sectional shape of the external plate 110 is configured as a trapezoidal shape or a polygonal shape, the bending stress that acts in the external plate 110 due to the pressure of liquids stored in the pressure vessel can be reduced.
  • the height of the first inner reinforcing element 120 is increased by the height of the ridge part 102, so the present invention is advantageous in that it increases the structural strength and rigidity of the reinforcing plate and reduces the shear lag effects that may be generated in the external plate 110.
  • the construction and operational effects of the first reinforcing plate 100 are disclosed in Korean Patent Application Publication No. 2011-0106218 , so a further detailed description of the construction and operational effects of the first reinforcing plate 100 will be omitted from this description.
  • the second reinforcing plate 200 which is an element having a flat plate cross-sectional structure, is used to form the pressure vessel in cooperation with the first reinforcing plate 100.
  • the second reinforcing plate 200 is used to form the bottom wall V4 of the pressure vessel.
  • the second reinforcing plate 200 having the above-mentioned function comprises an external plate 210, a first bottom reinforcing element 220, a second bottom reinforcing element 230, a third bottom reinforcing element 240, and a connection reinforcing element 250.
  • the external plate 210 is configured as a flat plate cross-sectional structure.
  • the external plate 210 may be configured as an inclined plate that can efficiently collect liquids by allowing the liquids to flow down to a desired place when unloading liquids.
  • the external plate 210 is configured as a V-shaped inclined structure, in which the left and right parts of the external plate 210 are inclined downward to the center of the external plate 210 to form a V-shaped cross-section, so liquids that remain in the left and right parts of the pressure vessel efficiently flow down to the center so as to be collected in the center (see FIG. 10 ).
  • the first bottom reinforcing element 220 is installed on the inner surface of the external plate 210 such that the element 220 extends to the left and right parts of the external plate 110.
  • the first bottom reinforcing element 220 is installed so as to form a structure continued to part of the first inner reinforcing element 120a that is installed on the first reinforcing plate 100a constituting the left/right side walls V1 of the pressure vessel.
  • a plurality of flow holes 221 are formed through the first bottom reinforcing element 220, so liquids can flow through the flow holes 221.
  • the first bottom reinforcing element 220 comprises a plurality of first bottom reinforcing elements 220 such that they are connected to the respective first inner reinforcing elements 120a that are provided on the first reinforcing plate 100a constituting the left/right side walls V1.
  • the second bottom reinforcing element 230 is installed on the inner surface of the external plate 210 such that the second bottom reinforcing element 230 extends to the front and back and crosses the first bottom reinforcing element 220 so as to form a latticed reinforcing structure.
  • the second bottom reinforcing element 230 is installed to form a structure continued to the first inner reinforcing element 120b that is installed on the first reinforcing plate 100b constituting the front/rear walls V2 of the pressure vessel.
  • the second bottom reinforcing element 230 comprises a plurality of second bottom reinforcing elements 230 such that they are connected to the plurality of first inner reinforcing elements 120b that are provided on the first reinforcing plate 100b constituting the front/rear walls V2.
  • the third bottom reinforcing element 240 is installed on the inner surface of the external plate 210 such that the third bottom reinforcing element 240 forms a structure parallel to the second bottom reinforcing element 230.
  • the end of the third bottom reinforcing element 240 is connected to the groove part 101 of the first reinforcing plate 100b that constitutes the front/rear walls V2 of the pressure vessel.
  • the third bottom reinforcing element 240 comprises a plurality of third bottom reinforcing elements 240 such that at least one third bottom reinforcing element 240 can be placed between two neighboring second bottom reinforcing elements 230.
  • FIG. 6 a structure in which two third bottom reinforcing elements 240 are installed between two neighboring second bottom reinforcing elements 230 is illustrated.
  • connection reinforcing element 250 is installed on the groove part 101 of the first reinforcing plate 100b that forms the front/rear walls V2.
  • the connection reinforcing element 250 connects the ends of the third bottom reinforcing elements 240 to each other, and connects two neighboring first inner reinforcing elements 120 to each other.
  • connection reinforcing element 250 functions to distribute stress that concentrates on the junction between the third bottom reinforcing element 240 and the first reinforcing plate 100b.
  • the connection reinforcing element 250 comprises a plate that extends along the curvature of the groove part 101 while maintaining a constant width (see FIG. 11 ).
  • a second outer reinforcing element 150 may be installed on an outer surface of the first reinforcing plate 100a that constitutes the left/right side walls V1 of the pressure vessel.
  • the second outer reinforcing element 150 has a structure that is continued to the first outer reinforcing element 140c that is installed on the first reinforcing plate 100c constituting the ceiling wall V3 of the pressure vessel.
  • the lower end 100-1 of the first reinforcing plate 100a constituting the left/right side walls V1 of the pressure vessel be configured to form an inclined structure that is inclined inward to the interior of the pressure vessel such that the lower end 100-1 corresponds to the double-bottomed structure of a ship.
  • an inferior quality structure may be formed at a corner of the pressure vessel, at which the first reinforcing plate 100a constituting the left/right side walls V1, the first reinforcing plate 100b constituting the front/rear walls V2, and the second reinforcing plate 200 constituting the bottom wall V4 meet each other, as shown in FIG. 12 , so the corner may be difficult to repair or maintain and a stress may concentrate on the corner to cause a structural defect (see FIG. 12 ).
  • a three-face connecting element 300 is installed at the corner of the pressure vessel, at which two first reinforcing plates 100a and 100b and one second reinforcing plate 200 meet each other, so the two first reinforcing plates 100a and 100b and the second reinforcing plate 200 can be connected to each other at the corner so as to form a natural and efficient structure.
  • the three-face connecting element 300 is installed in such a way that it is inclined upward from the second reinforcing plate 200 both to the first reinforcing plate 100a constituting the left/right side walls V1 and to the first reinforcing plate 100b constituting the front/rear walls V2.
  • respective groove parts 101 of two neighboring first reinforcing plates 100a and 100b can be naturally, efficiently connected to each other using the three-face connecting element 300 (see FIG. 13 ).
  • respective groove parts 101' which are provided on the front and rear ends of the first reinforcing plate 100a constituting the left/right side walls V1 of the pressure vessel may be configured to form a radius of curvature different from that of the other groove parts 101 (see FIG. 14 ).
  • the left/right side walls V1, the front/rear walls V2 and the ceiling wall V3 are formed using the first reinforcing plates 100 having the creased cross-sectional structure. Accordingly, the bending stress that acts in the external plate 110 of the first reinforcing plate 100 can be changed to a hoop stress or can be efficiently reduced by the cross-sectional shape of the external plate 110, thereby improving the structural stability of the pressure vessel.
  • the height of the first inner reinforcing element 120 is increased by the height of the ridge part 102, and the stress is evenly distributed on the external plate having the creased cross-sectional structure without generating shear lag effects that may be generated in the external plate having the flat plate cross-sectional structure, so the present invention efficiently increases the effective width of the first inner reinforcing element 120 and increases the structural strength of the first inner reinforcing element 120. Therefore, in comparison with the related art pressure vessel using the reinforcing plates having the flat plate cross-sectional structure, the present invention can increase the interval between the reinforcing elements and reduces the number of reinforcing elements used in the pressure vessel, thereby reducing the production cost and the raw material cost of the pressure vessel.
  • the present invention can realize easy production, repair and maintenance of the pressure vessel.
  • desired structural continuity at the junction between the first reinforcing plate 100 and the second reinforcing plate 200 can be realized using the first inner reinforcing element 120 and the second inner reinforcing element 130.
  • the stress that may be generated in the junction between the first inner reinforcing element 120 and the first reinforcing plate 100b can be evenly distributed using the connection reinforcing element 250, so the pressure vessel of the present invention can realize desired structural stability.
  • the present invention is advantageous in that it can easily produce a pressure vessel and can prevent stress from concentrating on the corner due to an inferior quality structure of the corner.
  • first reinforcing plate 101 groove part 102: ridge part 110: external plate 120: first inner reinforcing element 130: second inner reinforcing element 140: first outer reinforcing element 150: second outer reinforcing element 200: second reinforcing plate 210: external plate 220: first bottom reinforcing element 221: flow holes 230: second bottom reinforcing element 240: third bottom reinforcing element 250: connection reinforcing element 300: three-face connecting element

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Claims (7)

  1. Réservoir sous pression pour stocker des liquides en vrac, comprenant :
    une pluralité de premières plaques de renforcement (100) ayant une structure plissée en section transversale formées en agençant de manière répétée une pluralité de parties de renfoncement (101) et par une pluralité de parties de nervure (102), les premières plaques de renforcement (100) étant combinées ensemble et formant des parois latérales gauche et droite (V1), des parois latérales avant et arrière (V2), et une paroi supérieure (V3) du réservoir sous pression pour stocker des liquides ; et
    au moins une seconde plaque de renforcement (200) combinée avec les premières plaques de renforcement (100) et formant une paroi inférieure (V4) du réservoir sous pression, l'une seconde plaque de renforcement (200) ayant une structure de plaque plate en section transversale ; et
    une plaque extérieure (110), dans laquelle la partie de renfoncement (101) et la partie de nervure (102) sont agencées de manière répétée, formant ainsi la structure plissée en section transversale ; et
    une pluralité de premiers éléments de renforcement intérieurs (120) ;
    caractérisé en ce que la pluralité de premiers éléments de renforcement intérieurs (120) installés sur la partie de nervure (102) de telle manière que les premiers éléments de renforcement intérieurs (120) sont montés sur la partie de nervure (102) respective sur une surface intérieure de la plaque extérieure (110) et font saillie vers l'intérieur dans un intérieur du réservoir sous pression ;
    une pluralité de seconds éléments de renforcement intérieurs (130) installés sur la surface intérieure de la plaque extérieure (110) de telle manière que les seconds éléments de renforcement intérieurs (130) croisent la pluralité de premiers éléments de renforcement intérieurs (120) ; et
    une pluralité de premiers éléments de renforcement extérieurs (140) installés à l'extérieur de la plaque extérieure (110) de telle manière que les premiers éléments de renforcement extérieurs forment une structure s'étendant le long des seconds éléments de renforcement intérieurs (130) ; et
    la seconde plaque de renforcement (200) comprend :
    une plaque extérieure (210) ayant une structure de plaque plate en section transversale ;
    une pluralité de premiers éléments de renforcement inférieurs (220) installés sur une surface intérieure de la plaque extérieure (210) de telle manière que les premiers éléments de renforcement inférieurs forment une structure continuant jusqu'à des premiers éléments de renforcement intérieurs (120a) installés sur une première plaque de renforcement (100a) constituant les parois latérales gauche et droite (V1) du réservoir sous pression, les premiers éléments de renforcement inférieurs ayant une pluralité de trous d'écoulement (221) pour permettre à des liquides de s'écouler à travers les premiers éléments de renforcement inférieurs ;
    une pluralité de seconds éléments de renforcement inférieurs (230) installés sur la surface intérieure de la plaque extérieure (210) de telle manière que les seconds éléments de renforcement inférieurs croisent les premiers éléments de renforcement inférieurs (220) de façon à former une structure de renforcement en treillis et forment une structure se continuant jusqu'à des premiers éléments de renforcement intérieurs (120b) qui sont installés sur une première plaque de renforcement (100b) constituant les parois latérales avant/arrière V2 du réservoir sous pression ;
    une pluralité de troisièmes éléments de renforcement inférieurs (240) installés sur la surface intérieure de la plaque extérieure (210) de telle manière que les troisièmes éléments de renforcement inférieurs forment une structure parallèle aux seconds éléments de renforcement inférieurs (230), et sont connectés à la partie de renfoncement (101) de la première plaque de renforcement (100b) constituant les parois latérales avant/arrière (V2) du réservoir sous pression ; et
    un élément de renforcement de connexion (250) installé sur la partie de renfoncement (101) de la première plaque de renforcement (100b) constituant les parois latérales avant/arrière (V2) de telle manière que l'élément de renforcement de connexion relie des extrémités des troisièmes éléments de renforcement inférieurs (240) ensemble, et connecte deux premiers éléments de renforcement intérieurs voisins (120b) ensemble.
  2. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, comprenant en outre :
    un second élément de renforcement extérieur (150) installé à l'extérieur d'une première plaque de renforcement (100a) constituant des parois latérales gauche et droite (V1) du réservoir sous pression de telle manière que le second élément de renforcement extérieur (150) forme une structure se continuant jusqu'à un premier élément de renforcement extérieur (140c) installé sur une première plaque de renforcement (100c) constituant une paroi supérieure (V3) du réservoir sous pression.
  3. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, comprenant en outre :
    une partie de face (131) installée sur une extrémité de chacun des seconds éléments de renforcement intérieurs (130) de façon à augmenter une résistance de l'extrémité du second élément de renforcement intérieur, la partie de face étant formée par deux rangées de parties de face.
  4. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, dans lequel l'élément de renforcement de connexion (250) comprend une plaque qui s'étend le long d'une courbure de la partie de renfoncement (101) tout en maintenant une largeur constante.
  5. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, dans lequel la plaque extérieure (210) comprend une plaque inclinée qui peut collecter des liquides en permettant aux liquides de s'écouler vers le bas vers un emplacement souhaité lors de l'évacuation des liquides.
  6. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, dans lequel
    une extrémité inférieure (100-1) d'une première plaque de renforcement (100a) constituant des parois latérales gauche et droite (V1) du réservoir sous pression est inclinée vers l'intérieur vers un intérieur du réservoir sous pression, et un élément de connexion à trois faces (300) est installé en un coin du réservoir sous pression, au niveau duquel deux premières plaques de renforcement (100a et 100b) et la seconde plaque de renforcement (200) se rencontrent,
    dans lequel l'élément de connexion à trois faces (300) s'étend depuis la seconde plaque de renforcement (200) vers les deux premières plaques de renforcement (100a et 100b) tout en étant incliné vers le haut, de telle manière que les deux premières plaques de renforcement (100a et 100b) et la seconde plaque de renforcement (200) sont connectées ensemble par l'élément de connexion à trois faces.
  7. Réservoir sous pression pour stocker des liquides en vrac selon la revendication 1, dans lequel des parties de renfoncement (101') placées sur des extrémités avant et arrière d'une première plaque de renforcement (100a) constituant des parois latérales gauche et droite (V1) du réservoir sous pression sont configurées pour former un rayon de courbure différent de celui d'autres parties de renfoncements (101).
EP13795986.2A 2012-08-16 2013-08-14 Contenant sous pression de stockage de marchandises liquides Not-in-force EP2896868B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120089260A KR101464405B1 (ko) 2012-08-16 2012-08-16 액체화물 저장용 압력용기
PCT/KR2013/007357 WO2014027850A1 (fr) 2012-08-16 2013-08-14 Contenant sous pression de stockage de marchandises liquides

Publications (3)

Publication Number Publication Date
EP2896868A1 EP2896868A1 (fr) 2015-07-22
EP2896868A4 EP2896868A4 (fr) 2015-11-25
EP2896868B1 true EP2896868B1 (fr) 2019-03-13

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ID=50101329

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EP13795986.2A Not-in-force EP2896868B1 (fr) 2012-08-16 2013-08-14 Contenant sous pression de stockage de marchandises liquides

Country Status (6)

Country Link
EP (1) EP2896868B1 (fr)
JP (1) JP5736517B2 (fr)
KR (1) KR101464405B1 (fr)
CN (1) CN103765076B (fr)
BR (1) BR112013026548B1 (fr)
WO (1) WO2014027850A1 (fr)

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Also Published As

Publication number Publication date
EP2896868A4 (fr) 2015-11-25
EP2896868A1 (fr) 2015-07-22
BR112013026548A2 (pt) 2016-12-27
BR112013026548B1 (pt) 2021-07-20
KR20140022998A (ko) 2014-02-26
JP5736517B2 (ja) 2015-06-17
KR101464405B1 (ko) 2014-11-21
WO2014027850A1 (fr) 2014-02-20
JP2014532150A (ja) 2014-12-04
CN103765076A (zh) 2014-04-30
CN103765076B (zh) 2015-12-30

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