US3811593A - Double wall cargo tank having insulating secondary barrier - Google Patents

Double wall cargo tank having insulating secondary barrier Download PDF

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Publication number
US3811593A
US3811593A US00110042A US11004271A US3811593A US 3811593 A US3811593 A US 3811593A US 00110042 A US00110042 A US 00110042A US 11004271 A US11004271 A US 11004271A US 3811593 A US3811593 A US 3811593A
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US
United States
Prior art keywords
adjacent
thermally insulating
primary barrier
insulating panels
panels
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.)
Expired - Lifetime
Application number
US00110042A
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English (en)
Inventor
T Bridges
P Lalangas
C Sjostrom
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MC MILLEN J ASS Inc
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MC MILLEN J ASS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MC MILLEN J ASS Inc filed Critical MC MILLEN J ASS Inc
Priority to US00110042A priority Critical patent/US3811593A/en
Priority to BE778431A priority patent/BE778431A/xx
Priority to DE19722203641 priority patent/DE2203641A1/de
Priority to NO182/72A priority patent/NO131216C/no
Priority to SE7200885A priority patent/SE383712B/xx
Priority to NL7201120A priority patent/NL7201120A/xx
Priority to FR7202776A priority patent/FR2123488B1/fr
Priority to GB394772A priority patent/GB1338757A/en
Priority to ES399254A priority patent/ES399254A1/es
Priority to IT19863/72A priority patent/IT946968B/it
Application granted granted Critical
Publication of US3811593A publication Critical patent/US3811593A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/06—Picture frames
    • A47G1/0605—Picture frames made from extruded or moulded profiles, e.g. of plastic or metal
    • A47G1/0611—Picture frames made from extruded or moulded profiles, e.g. of plastic or metal the profiles having clamping action; Elongated clips
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/06—Picture frames
    • A47G1/10—Corner clips or corner-connecting appliances for frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • 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
    • F17C2203/0629—Two walls
    • 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
    • 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

  • ABSTRACT A double wall tank for transporting cryogenic materials by ship.
  • the inner wall of the tank, the primary barrier takes the form of an integral metallic corrugated structure.
  • the outer wall of the tank, the secondary barrier takes the form of a plurality of insulating panels structurally connected to the inner wall of the tank through the means of external webs and is in liquid and gas-tight relation to external face plates. There are disclosed several types of insulating panels, several procedures for attaching the panels to the external face plates, and several procedures for securing adjacent panels to one another.
  • inner and outer tank walls are both corrugated.
  • corrugations significantly increase the strength of the tank and allow for inspection of the tank walls from between the walls. without significant increase in the overall tank dimensions. But the two corrugated walls also significantly increase the complexity of the tank. The fabrication of the wallcorrugations is difficult.
  • each of themetallic double wall tanks known to the prior-art requires an insulation layer to prevent the cryogenic temperature of the; housed cargo from reaching the hull of the ship. This further increases the weight of the tank. increases the complexity of the tank, and increases the cost of the tank.
  • the present invention relates to a double wall tank for the transportation of cryogenic materials by ship.
  • Theinner wall of the tank, the primary barrier is metallic, is corrugated, and is identical with that barrier described above with reference to the prior art.
  • the inventive tank is provided with internal webs, internal face plates, etc. These members are also identical with those used in the prior art tank described above.
  • the outer wall of the tank, the secondary barrier takes the form of a plurality of interconnected insulating panels each forming liquid and gas-tight seals with its neighboring panels and with two external face plates on which the panels are mounted. The external face plates are rigidly connectedto the inner wall of the tank.
  • External webs extend from the primary barrier to the secondary barrier of the inventive tank.
  • the surface of the external web associating with the primary barrier as in the prior art tank described above, is shaped to mate with the corrugations of the primary barrier.
  • the surface of the external web associating with the secondary barrier is, however, linear.
  • Yet another object of the present invention is to provide a double wall cargo tank whose secondary barrier is defined by a plurality of insulating panels which are BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a vertical cross-section showing an example of a prior art double wall cargo tank
  • FIG. 3 is a cross-section similar to FIG. 1, but illustrating the inventive double wall cargo tank
  • FIG. 6 is a horizontal cross-section throughthe walls of an inventive cargo tan'k illustrating one manner of securing the insulating panels to the face plates;
  • FIG. 9 is a cross-section taken along line 99 of FIG. 8 showing one manner of attaching adjacent insulating panels
  • FIG. 11 is also a view similar to FIG. 9, but showing a further method of joining adjacent panels
  • FIG. 14 is an enlarged cross-section showing still another securing procedure.
  • FIGS. 1 and 2 the prior art double wall cargo tank disclosed in the US. patent ap plication noted above will be described.
  • the cargo area is shown generally at 10 and is defined by a primary barrier 12 rigidly supported by a secondary barrier 14.
  • the primary barrier 12 is strengthened by a number of 1 internal webs 16, each having a stiffening face plate 18.
  • An interbarrier diaphragm 20 rigidly connects the primary barrier 12 to the secondary barrier l4.
  • a layer of insulation 22 thermally isolates the hull of the ship from the cryogenic material housed within the tank, and insulation blocks 24, inserted in the corrugations of the outer barrier 14, enhance the effect of the insulation layer 22.
  • the cargo area is indicated generally at 26 and is bounded by a metallic corrugated primary barrier 28.
  • the primary barrier 28 is strengthened by a number of internal-webs 30 which, in turn, are stiffened by internal face plates 32.
  • the inventive tank differs from those tanks known to the prior art in that the secondary barrier of the inventive tank is defined by the internal surfaces of a plurality of insulating panels 34 and the internal surfaces of the external face plates 36, the face plates 36 being held rigid with respect to the primary barrier 28 through the means of a plurality of external webs 38.
  • the external surfaces of the face plates 36 are covered by insulating pads 40 so as to ensure a break in the thermal path between the cryogenic cargo and the hull of the ship.
  • FIG. 5 the configuration and construction of a typical insulating panel 34 may be seen, as well as the association of the insulating panel with a pair of external webs 38 and their face plates 36.
  • the con nection between the insulating panel 34 and the face plates 36 has been eliminated for purposes of clarity.
  • the insulating panel 34 comprises a relatively rigid shell 39 filled with insulating material 42.
  • the shell 39 at its ends, defines ears 44' whose extremities are spaced apart a distance less than the distance between adjacent external webs 38 but greater than the distance between the adjacent edges of the external face plates 36.
  • the thickness of the ears 44 is less than that of the insulating panel 34 at its center, in this manner adding to the ease with which the panel 34 may be secured in place.
  • FIG. 7 the ease with which the insulating panels 34 may be positioned is demonstrated.
  • One ear 44 of a panel 34 is first positioned between the face plate 36 and the primary barrier 38, adjacentthe external web 38. This allows ready access for the other car 44 to the region between the primarybarrier 28 and its adjacent face plate 36'. Then, the insulating panel34 is secured to the face plates, as will be explained below.
  • An insulating panel 34 is shown in solid lines during an intermediate stage of insertion.
  • FIG. 7 also shows, in phantom, the position of several insulating panels 34 ready for affixation to their face plates 36.
  • the heads48 of the bolts 46 are shaped so as to prevent rotation of the bolts in the insulating panels 34.
  • washers 50 are embedded in the insulating panel 34, abutting the heads 48 of the bolts 46, and preventing lateral movement of the bolts.
  • a clamp 52- is positioned over the threaded end of each'bolt 46 and overlaps the external surface of the face plate 36.
  • a nut 54 is then tightly threaded ,onto each bolt 46 thereby securely clamping the respective insulating panels 34 to their face plates 36.
  • insulatingpads 40 are positioned between adjacent insulating panels 34.just over the externalsurfaces of the respective face plates.
  • the insulating pads 40 are provided with a number of bores passing therethrough equal to the number of bolts 46. The bores are located in the vicinity of the nuts 54 and allow ready access to the nuts for purposes of affixing or removing insulating panels. Then insulating plugs 58 are fit in each bore in the panels 34, after the nuts are tightened,
  • the insulating panels 34 and the insulating pads 40 serves as an additional precaution against vapor reaching the space between the primary and secondary barriers.
  • FIG. 8 a view of the inventive double wall cargo tank from outside the secondary barrier, several insulating panels34 are shown attached to their respective face plates 36.
  • Each insulating panel 34 is provided with three, for example, recesses located near its lower edge.
  • Each panel is also provided with three bolts 64 located near its upper edge and adapted to align with the recesses 62 in the adjacent panel.
  • Each bolt has a head 66 to prevent rotational movement, and each is associated with a washer 68 to prevent lateral movement.
  • Each bolt 64 in one insulating panel 34 is adapted tp pass through a thin region 70, in the adjacent insulating panel, extending into the respective recess 62 therein. Then, a washer '72 is positioned over the bolt 64 and is fastened in place by means of a nut 74.
  • the nut 74 acting between adjacent insulating panels 34, brings adjacent panels together and hence ensures a liquid and gas-tight seal therebetween.
  • a gasket 76 is provided between adjacent insulating panels.
  • the outer wall of the inventive tank forms a structurally sound and liquid and gasimpervious barrier.
  • the tank is strong, light, compact, inexpensive, and relatively easy to construct.
  • each panel facing the primary barrier is tapered at 78.
  • the tapered edges 78 are adapted to mate with an insulating pad 80 having a bolt 82 solidly embedded therein.
  • the head 84 of the bolt 82 prevents the bolt from rotating in the pad 80 and a washer 86 prevents the bolt from experiencing lateral movement.
  • the threaded end of the bolt 82 extends from the tapered end of the pad 80 and lies between the respective insulating panels 34.
  • 'Bolt 82 is provided with a washer 88 and'a nut 90 introduced through a bore defined in the united panels 34.
  • An insulating plug 92 is then fit over the bolt 82 so as to break the thermal path between the cryogenic cargo and the hull of the ship.
  • a gasket arrangement 94 is positioned intermediate the panels 34 and the pad 80.
  • FIG. II illustrates a further method of uniting adjacent panels 34.
  • angled, or wedge-shaped, recesses 96 are carved out of the corner of adjacent panels, with the recesses lying on the outboard side of the. panels.
  • An insulating pad 98, cut in the shape of two integral-wedges, 100 associates with the adjacent insulating panels 34.
  • the respective wedges 100 of the insulating pad 9 8' are received by the angled recesses 96 in the respective insulating panels 34 and serve to draw the adjacent panels toward one another.
  • Each panel 34 is provided with a number of bolts 102 having heads 104 and washers 106 associated therewith, the heads and washers serving the same purposes as described above.
  • the threaded ends of bolts 102 extend from the insulating panels 34 and into the insulating pad 98.
  • the pad 98 is provided with a series of bores 108 adapted to align with and to receive the threaded ends of the bolts 102.
  • Washers 110 are fit over the bolts 102, the bolts ultimately receiving nuts 112 for securing adjacent insulating panels 34.
  • Small insulating plugs 114 cover the bolts 102 and break the thermal path between the cryogenic cargo and the hull of the ship.
  • a gasket 1l6 ensures a liquid and gasimperviousjunction between adjacent insulating panels 34.
  • FIG. 12 still a further arrangement for securing adjacent insulating panels 34 is illustrated. This arrangement is much like that described with reference to FIG. 9 and hence only the differences will here be described.
  • FIG. 9 and notwithstanding the presence of gasket 76, there is a potential planar heat flow path. This cannot be tolerated when dealing with shipboard Cryogenics.
  • the attachment arrangement illustrated in FIG. 12 serves to eliminate the planar heat flow path and to reduce the potential danger of heat transfer between adjacent insulating panels 34.
  • Each insulating panel 34 shown in FIG. 12, is provided at its upper edge with an upstanding tongue 118.
  • FIGS. 3 through 7 the insulating panels extend a substantial distance on both sides of the face plates. Therefore, a certain width of insulation is wasted in the area of the face plates.
  • FIGS. 13 through 15 two further embodiments of the present invention are illustrated, which embodiments substantially increase the effectiveness of a given width of insulation.
  • each insulating panel 124 is shown attached to a pair of face plates 36.
  • Each side of each insulating panel is provided, in the regions of its face plates. with a depression I27 ofa depth substantially equal to the width of a face plate 36.
  • the depressions 127 are adapted to mate with respective face plates.
  • a metallic plate I28 is welded to the innermost surface of each end of the face plates 36, lying flush with the face plates and the insulating panels 124 and hence serving to increase the structural bearing surface for the panels.
  • a series of bolts 126 extend through each face plate 36, and through a portion of each insulating panel 124.
  • each panel 124 is provided with mating bores to allow for the insertion of washers 130 and nut 132. When the nuts 132 are tightened, the insulating panels 124 are held secure with respect to their respective face plates 136.
  • Insulating plugs 134 fill the bores in the insulating panels 124 and cover the bolts 126, while insulating pads 136 are provided between adjacent insulating panels 124 serving to ensure the continuity of the insulation.
  • Gaskets 137 serve to guarantee a liquid and gastight seal.
  • FIGS. 14 and 15 another embodiment of the present invention will be described.
  • This embodiment maximizes the effect of a given width of insulation, more so even than the embodiment illustrated in FIG. 13.
  • two adjacent insulating panels are shown generally at 138.
  • the FIG. 14 cross-section is taken in an area where the corners of four insulating panels meet. See FIG. 15.
  • the insulating panels 138 are defined by a body ofinsulating material 140 sandwiched between a pair of plywood face plates 142. With this embodiment of the invention, the insulating panels 138 are preferably rectangular.
  • a spacer block 144 as of wood. is positioned at each junction of four insulating panels 138.
  • a bolt 146 whose nut 148 is prevented from rotating by means of a stop 151 is inserted through the face plate 36 and through the wooden spacer block 144.
  • a metallic cup 150 whose bottom 152 has a bore allowing the threaded end of the bolt 146 to pass therethrough, is fit between mating insulating panels 138.
  • the sides of the metallic cup 150, in cross-section, are square.
  • the top of the cup is flared outwardly and takes the form ofa flange 154 which is square in elevation.
  • the sidesof the cup 150 are sized so as to contact mating insulating panels 138 and to maintain the spacing therebetween; while the flange 154 is sized so as to overlap and unite adjacent insulating panels.
  • a nut 156 is secured on the threaded end of the bolt 146, from the inside of the cup 150, and maintains adjacent insulating panels 138 in their proper positions.
  • Wood cover plates 158 are then screwed onto the plywood face plates 142, immediately above the cups 150, of the insulating panels 138.
  • Gaskets 160 are provided between the insulating panels 138 and the face plates 36, thus ensuring the integrity of the liquid and gas-tight seal.
  • the cups 150 are used both in the corners and along the edges of the panels 138.
  • the wood spacer blocks 144 are used only in corners.
  • face plates 138 extend only in the vertical direction, for example, spacings exist between insulating panels 138 along their adjacent horizontal surfaces. Accordingly, a wood backing is provided between the horizontal edges of adjacent insulating panels. This' is necessary in view of the need for insulation between the hull of the ship and the cryogenic cargo.
  • insulation is foamed between adjacent panels 138 in both the vertical and the horizontal directions after the panels are secured in place. In this manner, a uniform layer of insulation is provided.
  • Each insulating panel 138 is approximately four feet by eight feet.
  • eight foot boards 162 are positioned along the length of the panels 138 at their edges and at their mid-sections. These boards increase the strength of the panels and assist in directing forces along the faces of the insulating panels.
  • a double wall tank for the transportation of cryogenie materials by ship comprising: a liquid and gas-impervious primary barrier defining a cargo space; 'a plurality of webs rigidly connected to the outer surface of said primary barrier and extending away from said cargo space; a plurality of thermally insulating panels spaced from said primary barrier and attached together to form a liquid and gas-impervious secondary barrier which will withstand the pressures developed by the cargo in the event of rupture in said primary barrier, said insulating panels being attached directly to said webs so that said insulating panels are supported by said webs.
  • each thermally insulating panel is attached to a pair of adjacent webs in a liquid and gas-impervious manner.
  • each thermally insulating panel is attached to a pair of adjacent webs in one direction; and wherein adjacent thermally insulating panels are attached to each other in a second direction transverse to said first direction.
  • each thermally insulating panel is of .a length less than the distance between adjacent webs but greater than the distance between adjacent edges of neighboring external face plates; wherein each thermally insulating panel is provided with a pair of ears adapted to abut the surfaces of neighboring face plates adjacent the primary barrier; means for securing said thermally insulating panels to said face plates; and means for interrupting the thermal path between the primary barrier and the surfaces of the thermally insulating panels remote from said primary barrier in the regionof the face plates and intermediate adjacent thermally insulating panels.
  • adjacent thermally insulating panels are attached to each other by: an elongated fastening member integral with one thermally insulating panel, having one end extending toward the adjacent thermally insulating panel and crossing the boundary between thermally insulating panels; and means associated with said adjacent thermally insulating panel integral with said fastening member.
  • said fastening member takes the form of a bolt whose head is fixedly attached to said one thermally insulating panel, and whose threaded end extends into a recess defined in said adjacent thermally insulating panel, and a nut threaded onto said bolt so as to securely attach said'one thermally insulating panel to said adjacent thermally insulating panel, the recess in said adjacent thermally insulating panel lying on the surface of said panel remote from said primary barrier and being of a dimension sufficient to allow operation on said nut.
  • adjacent thermally insulating panels are attached to each other by: tapered edges defined in adjacent surfaces of adjacent thermally insulating panels, said tapered edges facing the primary barrier; an insulating pad adapted to wedge between the tapered edges of said adjacent thermally insulating panels; an elongated fastening member integral with said insulating pad, and having a portion thereof extending from said insulating pad into the junction between adjacent thermally insulating panels; and means for urging the respective surfaces of said adjacent thermally insulating panels remote from said primary barrier toward said insulating pad.
  • adjacent thermally insulating panels are attached to each other by: respective angled recesses defined in adjacent surfaces of adjacent thermally insulating panels, said angled recesses facing away from said primary barrier; an insulating pad in the form of two integral wedges, the shape of said pad and its wedges adapted to mate with'said angled recesses in said'adjacent thermally insulating panels; fastening members integral with each of said adjacent thermally insulating panels extending into said insulating pad; and means for urging said insulating pad toward said primary barrier.
  • adjacent thermally insulating panels are attached to each other by: an elongated fastening member integral with one thermally insulating panel, having one end extending toward the adjacent thermally panel and crossing the boundary between thermally insulating panels; and means associated with said adjacent thermally insulating panel integral with said fastening member.
  • said fastening member takes the form of a bolt whose head is fixedly attached to said one thermally insulating panel, and whose threaded end extends into a recess defined in said adjacent thermally insulating panel, and a nut threaded onto said bolt so as to securely attach said one thermally insulating panel to said adjacent thermally insulating panel, the recess in said adjacent thermally insulating panel lying on the surface of said adjacent thermally insulating panel remote from said primary barrier and being of a dimension sufficient to allow operations on said nut.
  • adjacent thermally insulating panels are attached to each other by: tapered edges defined in adjacent surfaces of adjacent thermally insulating panels, said tapered edges facing the primary barrier; an insulating pad adapted to wedge between the tapered edges of said adjacent thermally insulating panels; an elongated fastening member integral with said insulating pad, and having a portion thereof extending from said insulating pad into the junction between adjacent thermally insulating panels; and means for urging the respective surfaces of said adjacent thermally insulating panels remote from said primary barrier toward said insulating pad.
  • adjacent thermally insulating panels are attached to each other by: respective angled recesses defined in adjacent surfaces of adjacent thermally insulating panels, said angled recesses facing away from said primary barrier; an insulating pad in the form of two integral wedges, the shape of said pad and its wedges adapted to mate with said angled recesses in said adjacent thermally insulating panels; when said panels are in contact with one another; fastening members integral with each of said adjacent thermally insulating panels extending into said angled insulating pad; and means for urging said insulating pad toward said primary barrier.
  • each thermally insulating panel is supported by and extends between a pair of adjacent-external face plates, said thermally insulating panels being supported on the surfaces of the external face plates remote from said primary barrier and being spaced apart; means for maintaining the spacing between adjacent thermally insulating panels at the junctions between the corners of four panels; and fastening means positioned between and serving to maintain the spacing between thermally insulating panels.
  • each of said fastening means comprises: a cup-shaped member having side walls for maintaining the spacing between adjacent insulating panels, the side walls being square in cross section, and having an outwardly extending flange at the upper region thereof for contacting the surfaces of adjacent thermally insulating panels remote from said primary barrier and being square in plan; and means for generating a compressive force between the surfaces of adjacent thermally insulating panels remote from said primary barrier and surfaces of adjacent thermally insulating panels adjacent said primary barrier.
  • the cargo tank recited in claim 1 and further comprising: an external face plate rigidly connected to the extremity of each of said webs remote from said primary barrier, the plane of each of said face plates being substantially parallel to the plane of the adjacent primary barrier; means for attaching each of said thermally insulating panels to a pair of adjacent face plates in a liquid and gas-impervious manner; and wherein the secondary barrier is defined by the surface of thethermally insulating panels adjacent said primary barrier and the surfaces of said face plates adjacent said primary barrier.
  • each thermally insulating panel is attached to a pair of adjacent face plates in one direction; and wherein adjacent thermally insulating panels are attached to each other in a second direction transverse to said first direction.
  • each of said fastening means comprises: a bearing member for contacting the surfaces of adjacent thermally insulating panels remote from said primary barrier;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
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US00110042A 1971-01-27 1971-01-27 Double wall cargo tank having insulating secondary barrier Expired - Lifetime US3811593A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00110042A US3811593A (en) 1971-01-27 1971-01-27 Double wall cargo tank having insulating secondary barrier
BE778431A BE778431A (fr) 1971-01-27 1972-01-24 Reservoir de chargement a double paroi et a barriere isolante secondaire
NO182/72A NO131216C (enrdf_load_html_response) 1971-01-27 1972-01-26
SE7200885A SE383712B (sv) 1971-01-27 1972-01-26 Dubbelveggig tank for transport av kylmaterial med fartyg
DE19722203641 DE2203641A1 (de) 1971-01-27 1972-01-26 Doppelwandiger Frachtbehälter mit isolierender Sekundärsperre
NL7201120A NL7201120A (enrdf_load_html_response) 1971-01-27 1972-01-27
FR7202776A FR2123488B1 (enrdf_load_html_response) 1971-01-27 1972-01-27
GB394772A GB1338757A (en) 1971-01-27 1972-01-27 Cryogenic cargo tanks
ES399254A ES399254A1 (es) 1971-01-27 1972-01-27 Perfeccionamientos en depositos de doble pared para el transporte de materiales criogenos.
IT19863/72A IT946968B (it) 1971-01-27 1972-01-27 Serbatoio da carico a doppia pare te avente uno schermo secondario isolante

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Application Number Priority Date Filing Date Title
US00110042A US3811593A (en) 1971-01-27 1971-01-27 Double wall cargo tank having insulating secondary barrier

Publications (1)

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US3811593A true US3811593A (en) 1974-05-21

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US00110042A Expired - Lifetime US3811593A (en) 1971-01-27 1971-01-27 Double wall cargo tank having insulating secondary barrier

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US (1) US3811593A (enrdf_load_html_response)
BE (1) BE778431A (enrdf_load_html_response)
DE (1) DE2203641A1 (enrdf_load_html_response)
ES (1) ES399254A1 (enrdf_load_html_response)
FR (1) FR2123488B1 (enrdf_load_html_response)
GB (1) GB1338757A (enrdf_load_html_response)
IT (1) IT946968B (enrdf_load_html_response)
NL (1) NL7201120A (enrdf_load_html_response)
NO (1) NO131216C (enrdf_load_html_response)
SE (1) SE383712B (enrdf_load_html_response)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US3972166A (en) * 1974-08-23 1976-08-03 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Heat insulation structure for liquefied gas storage tank
US3978808A (en) * 1973-09-11 1976-09-07 John J. Mcmullen Associates, Inc. Double wall cargo tank for transporting cryogenics
US4015742A (en) * 1974-08-19 1977-04-05 L. & C. Steinmuller Gmbh Anchorage of a lining in a cast iron reactor pressure vessel
US4155482A (en) * 1975-11-03 1979-05-22 Owens-Corning Fiberglas Corporation Insulated cryogenic liquid container
FR2515780A1 (fr) * 1981-11-04 1983-05-06 Moss Rosenberg Verft As Dispositif d'isolation thermique etanche entre deux elements de structure
US4548154A (en) * 1983-07-11 1985-10-22 Hitachi Zosen Corporation Double hulled ship with longitudinal reinforcements
US4660491A (en) * 1983-07-22 1987-04-28 Hitachi Zosen Corporation Double hull ship without reinforcing transverse members between the inner and outer hull platings
US4674430A (en) * 1983-07-11 1987-06-23 Hitachi Zosen Corporation Ship without transverse reinforcing members between the inner and outer hull plating
US5918806A (en) * 1997-05-08 1999-07-06 North American Steel Tie Corp. Electrically insulated railway cross tie
US6170420B1 (en) 1998-12-15 2001-01-09 Maritrans, Inc. Rebuilt double hull vessel and method of rebuilding a single hull vessel into a double hull vessel
US20020157347A1 (en) * 2000-02-09 2002-10-31 Didier Fumez Manufacture and Method of Installing, Notably Construction Panels Formed in a Closed Mold
US6637359B1 (en) 1998-12-15 2003-10-28 Maritrans Inc. System and method for internally fitting a new inner hull to an existing outer hull to form a rebuilt double hull vessel
US20050204982A1 (en) * 2004-03-18 2005-09-22 Neu Richard W Double-hull ore carrying vessel conversion from single-hull oil tanker and method of performing the same
US20060117566A1 (en) * 2004-12-08 2006-06-08 Yang Young M Method for manufacturing liquid tank and ship with liquid tank
US7204195B2 (en) 2004-12-08 2007-04-17 Korea Gas Corporation Ship with liquid tank
US20070246473A1 (en) * 2006-04-20 2007-10-25 Korea Gas Corporation Lng tank and vehicle with the same
US20080016788A1 (en) * 2004-05-20 2008-01-24 Gulati Kailash C Lng Containment System And Method Of Assembling Lng Containment System
EP1894832A1 (en) * 2006-09-01 2008-03-05 Nieuwenhuijsen Groep B.V. Method for manufacturing and converting a ship, and a ship and container
US20080053993A1 (en) * 2006-09-01 2008-03-06 Korea Gas Corporation Structure for liquefied natural gas storage tank
US20100160309A1 (en) * 2007-03-13 2010-06-24 Tony Siu Inhibitors of janus kinases and/or 3-phosphoinositide-dependent protein kinase-1
US20110076092A1 (en) * 2008-05-02 2011-03-31 Samsung Heavy Ind.Co., Ltd. Apparatus for fixing an insulation panel of a cargo and insulation panel thereof
US20120012473A1 (en) * 2009-04-14 2012-01-19 Adnan Ezzarhouni Termination of the secondary membrane of an lng tank
US20130292391A1 (en) * 2012-05-02 2013-11-07 Jhonny Ramon Ramirez Dala External Insulation System for Tanks and the Like
US9365266B2 (en) 2007-04-26 2016-06-14 Exxonmobil Upstream Research Company Independent corrugated LNG tank
US20160273709A1 (en) * 2012-11-13 2016-09-22 Nli Innovation As Support assembly
CN112550607A (zh) * 2020-12-01 2021-03-26 沪东中华造船(集团)有限公司 一种双相不锈钢槽型舱壁制作方法

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Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3978808A (en) * 1973-09-11 1976-09-07 John J. Mcmullen Associates, Inc. Double wall cargo tank for transporting cryogenics
US3899989A (en) * 1973-10-10 1975-08-19 Nat Building Ind Marine panel hanging assembly
US4015742A (en) * 1974-08-19 1977-04-05 L. & C. Steinmuller Gmbh Anchorage of a lining in a cast iron reactor pressure vessel
US3972166A (en) * 1974-08-23 1976-08-03 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Heat insulation structure for liquefied gas storage tank
US4155482A (en) * 1975-11-03 1979-05-22 Owens-Corning Fiberglas Corporation Insulated cryogenic liquid container
FR2515780A1 (fr) * 1981-11-04 1983-05-06 Moss Rosenberg Verft As Dispositif d'isolation thermique etanche entre deux elements de structure
US4674430A (en) * 1983-07-11 1987-06-23 Hitachi Zosen Corporation Ship without transverse reinforcing members between the inner and outer hull plating
US4548154A (en) * 1983-07-11 1985-10-22 Hitachi Zosen Corporation Double hulled ship with longitudinal reinforcements
US4660491A (en) * 1983-07-22 1987-04-28 Hitachi Zosen Corporation Double hull ship without reinforcing transverse members between the inner and outer hull platings
US5918806A (en) * 1997-05-08 1999-07-06 North American Steel Tie Corp. Electrically insulated railway cross tie
US6170420B1 (en) 1998-12-15 2001-01-09 Maritrans, Inc. Rebuilt double hull vessel and method of rebuilding a single hull vessel into a double hull vessel
US6357373B1 (en) 1998-12-15 2002-03-19 Maritrans Inc. Rebuilt double hull vessel and method of rebuilding a single hull vessel into a double hull vessel
US6637359B1 (en) 1998-12-15 2003-10-28 Maritrans Inc. System and method for internally fitting a new inner hull to an existing outer hull to form a rebuilt double hull vessel
US20020157347A1 (en) * 2000-02-09 2002-10-31 Didier Fumez Manufacture and Method of Installing, Notably Construction Panels Formed in a Closed Mold
US6871461B2 (en) * 2000-02-09 2005-03-29 Groupe P.A.D.F., Inc. Manufacture and method of installing, notably construction panels formed in a closed mold
US7077071B2 (en) 2004-03-18 2006-07-18 Neu Richard W Double-hull ore carrying vessel conversion from single-hull oil tanker and method of performing the same
US20050204982A1 (en) * 2004-03-18 2005-09-22 Neu Richard W Double-hull ore carrying vessel conversion from single-hull oil tanker and method of performing the same
US20080016788A1 (en) * 2004-05-20 2008-01-24 Gulati Kailash C Lng Containment System And Method Of Assembling Lng Containment System
US8387334B2 (en) 2004-05-20 2013-03-05 Exxonmobil Upstream Research Company LNG containment system and method of assembling LNG containment system
US7837055B2 (en) 2004-05-20 2010-11-23 Exxonmobil Upstream Research Company LNG containment system and method of assembling LNG containment system
US20110023408A1 (en) * 2004-05-20 2011-02-03 Gulati Kailash C LNG Containment System and Method of Assembling LNG Containment System
US20110023404A1 (en) * 2004-05-20 2011-02-03 Gulati Kailash C LNG Containment System and Method Of Assembling LNG Containment System
US7171916B2 (en) 2004-12-08 2007-02-06 Korea Gas Corporation Ship with liquid tank
US7204195B2 (en) 2004-12-08 2007-04-17 Korea Gas Corporation Ship with liquid tank
US20060117566A1 (en) * 2004-12-08 2006-06-08 Yang Young M Method for manufacturing liquid tank and ship with liquid tank
US7325288B2 (en) * 2004-12-08 2008-02-05 Korea Gas Corporation Method for manufacturing liquid tank and ship with liquid tank
US7717288B2 (en) 2004-12-08 2010-05-18 Korea Gas Corporation Liquid tank system
US20060118018A1 (en) * 2004-12-08 2006-06-08 Yang Young M Modular walls for use in building liquid tank
US7597212B2 (en) 2004-12-08 2009-10-06 Korea Gas Corporation Modular walls for use in building liquid tank
US20060131304A1 (en) * 2004-12-08 2006-06-22 Yang Young M Liquid tank system
US20060118019A1 (en) * 2004-12-08 2006-06-08 Yang Young M Ship with liquid tank
US20070246473A1 (en) * 2006-04-20 2007-10-25 Korea Gas Corporation Lng tank and vehicle with the same
US7819273B2 (en) 2006-04-20 2010-10-26 Korea Gas Corporation Liquid natural gas tank with wrinkled portion and spaced layers and vehicle with the same
US7717289B2 (en) * 2006-09-01 2010-05-18 Korea Gas Corporation Anchor for liquefied natural gas storage tank
US20100018225A1 (en) * 2006-09-01 2010-01-28 Korea Gas Corporation Structure for liquefied natural gas storage tank
US20080053993A1 (en) * 2006-09-01 2008-03-06 Korea Gas Corporation Structure for liquefied natural gas storage tank
EP1894832A1 (en) * 2006-09-01 2008-03-05 Nieuwenhuijsen Groep B.V. Method for manufacturing and converting a ship, and a ship and container
US7938287B2 (en) * 2006-09-01 2011-05-10 Korea Gas Corporation Structure for liquefied natural gas storage tank
US20100160309A1 (en) * 2007-03-13 2010-06-24 Tony Siu Inhibitors of janus kinases and/or 3-phosphoinositide-dependent protein kinase-1
US9365266B2 (en) 2007-04-26 2016-06-14 Exxonmobil Upstream Research Company Independent corrugated LNG tank
US20110076092A1 (en) * 2008-05-02 2011-03-31 Samsung Heavy Ind.Co., Ltd. Apparatus for fixing an insulation panel of a cargo and insulation panel thereof
US8776707B2 (en) 2008-05-02 2014-07-15 Samsung Heavy Ind. Co., Ltd. Apparatus for fixing an insulation panel of a cargo and insulation panel thereof
US20120012473A1 (en) * 2009-04-14 2012-01-19 Adnan Ezzarhouni Termination of the secondary membrane of an lng tank
US9291308B2 (en) * 2009-04-14 2016-03-22 Gaztransport & Technigaz LNG container with a connecting device which connects a secondary impermeable barrier to a load bearing structure
US20130292391A1 (en) * 2012-05-02 2013-11-07 Jhonny Ramon Ramirez Dala External Insulation System for Tanks and the Like
US9255737B2 (en) * 2012-05-02 2016-02-09 Jhonny Ramon Ramirez Dala External insulation system for tanks and the like
US20160097195A1 (en) * 2012-05-02 2016-04-07 Jhonny Ramon Ramirez Dala External Insulation System for Tanks and the Like
US20160273709A1 (en) * 2012-11-13 2016-09-22 Nli Innovation As Support assembly
CN112550607A (zh) * 2020-12-01 2021-03-26 沪东中华造船(集团)有限公司 一种双相不锈钢槽型舱壁制作方法

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DE2203641A1 (de) 1972-08-17
GB1338757A (en) 1973-11-28
FR2123488A1 (enrdf_load_html_response) 1972-09-08
IT946968B (it) 1973-05-21
NO131216B (enrdf_load_html_response) 1975-01-13
SE383712B (sv) 1976-03-29
FR2123488B1 (enrdf_load_html_response) 1975-08-29
NO131216C (enrdf_load_html_response) 1975-04-23
BE778431A (fr) 1972-07-24
ES399254A1 (es) 1974-12-01

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