US3899988A - Ships equipped with pressurized cargo tanks supported on continuous shells - Google Patents

Ships equipped with pressurized cargo tanks supported on continuous shells Download PDF

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Publication number
US3899988A
US3899988A US393896A US39389673A US3899988A US 3899988 A US3899988 A US 3899988A US 393896 A US393896 A US 393896A US 39389673 A US39389673 A US 39389673A US 3899988 A US3899988 A US 3899988A
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United States
Prior art keywords
tray
skirt
combination
tank
platform
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Expired - Lifetime
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US393896A
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English (en)
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Jaime Torroja Menendez
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Sener Tecnica Industrial y Naval SA
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Sener Tecnica Industrial y Naval SA
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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
    • B63B25/14—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed pressurised
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/082—Mounting arrangements for vessels for large sea-borne storage vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/01—Reinforcing or suspension means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/901—Liquified gas content, cryogenic

Definitions

  • ABSTRACT A continuous, suitably stiffened skirt is attached by its bottom edge to the top of the double bottom of a ship and beneath the shell or shells which constitutethe support for each cargo tank.
  • the top edge of the skirt which has the same circumference as the bottom edge of the internal one of the shells which form the cargo tank support and is opposite the same, is attached to a suitably stiffened platform, preferably horizontal, which extends between top edge and the inner shell of the ships hull.
  • PATENTEB AUG-1 9 I975 SIIIZT 5 BF 5 SHIPS EQUIPPED WITH PRESSURIZED CARGO TANKS SUPPORTED ON CONTINUOUS SHELLS BACKGROUND OF THE INVENTION
  • the present invention relates to improvements in ships equipped with pressurized independent cargo tanks, designed especially for the transportation of liquefied gases.
  • LNG liquefied natural gas
  • the other design is basically a maritime version of the well tried approach according to which the tank is supported upon a continuous envelope which is a Solid of-revolution. Its chief characteristic is the special design of the equatorial portion which links the supporting frame to the top and bottom hemispheres of the tank.
  • the present assignee has developed a type of support or bracket, which is described in Spanish Patent No. 40l ,734, which comprises a peripheral structure attached to the tank and to a certain extent forming part of the wall thereof, and two continuous skirts or shells which are unreinforced, attached by one of their edges to said peripheral structure and by the other to the ships structure.
  • a continuous, suitably stiffened skirt attached by its bottom edge of the top of the double bottom of the ship, and at its top edge, which has the same circumference as the bottom edge of the internal one of the shells which form the tank support and is opposite the same, there is attached a suitably stiffened platform, preferably horizontal, which extends between the top edge and the inner shell of the hull.
  • a suitably stiffened platform preferably horizontal, which extends between the top edge and the inner shell of the hull.
  • the vertical forces are transmitted from the tank support to the skirt as normal forces and to the flat plates as shear forces along the whole length of the weld seams. From these the loads are then distributed to the floors, webframes, longitudinal girders, transverse bulkheads and the other structural elements of the ship.
  • the horizontal dynamic forces are transmitted from the tank support to the ships structure principally as shear forces which are distributed over the whole of the horizontal platform. With this disposition, the ships structure retains its simple constitution and at the same time no stress concentrations are induced into the tank support or the ships structure.
  • brackets fitted with faceplates and intermediate stiffeners. These brackets are coplanar with the aforementioned plates. The brackets are fixed to the skirt by the outside edge and by the lower edge to the top of the double bottom.
  • a small skirt may be put under the platform and opposite the external shell of the support, with a smaller height than that of the skirt and joined by its upper edge to the platform.
  • This small skirt is also joined to the abovementioned plates on the lines of intersection of the plates and skirt by means of intermediate parts.
  • the internal edge of the platform will be slightly inside the upper edge of the skirt.
  • an intermediate deck can be put between the ships inner and outer shells, facing the platform.
  • the disposition of the platform can permit the suppression of the double bottom'of the ship in the zone outside the skirt, away from the proximity of the lower edge of the skirt.
  • the lower edges of the said flat plates are then joined to the faceplates of the floors and longitudinal girders. For the same reason one can dispense with the inner shell of the ship, at least in the zones situated below the platform, the external edges of the said flat plates facing the floors being then joined to the face plates of the transverse web frames.
  • the skirt can have either a conical or cylindrical shape.
  • the cylindrical shape is the better so long as the shape of the ship permits its use.
  • the double bottom zone resembles, under each tank, a flat grillage that has a rectangular shape if there are brackets on the inside of the skirt, and a circular one if not.
  • This grillage is supported throughout its entire perimeter and is subjected to hydraulic pressure which acts upon its lower face.
  • the flat plates between the skirt and the platform transmit the forces to the transverse webframes as shear forces and to the floors and longitudinal girders as compression forces.
  • the brackets on the inside of the skirt improve the distribution of the loads and reduce the spans of the double bottom panels.
  • a drip tray is placed beneath the tank which is independent of the ships structure and of the tank support.
  • This system allows the mounting of the tank and its support and corresponding tray in a single operation.
  • the assembly can be suspended, in which case the tray is fixed to the support, at least during the mounting stage, or alternatively the assembly can be floated by flooding the dock where the ship is being built, in which case the upper edge of the tray must stay above the flotation level of the assembly.
  • the mounting of the tanks by flotation with their corresponding support and tray can be done without a great deal of water in the construction dock, before assembling the part of the platform and skirts situated between each two consecutive tanks in order that through this gap the tanks can float to their respective locations. Once the tank is in position the platform and small skirts can be completed and then the next tank can be mounted.
  • the tray can be constructed without stiffeners and be kept without danger of buckling during the operation of floating the assembly, at least the surface of the central part of the said tray should be parallel to the lower external surface of the tank, so that the support between tank and tray is achieved through the corresponding insulation over an area of sufficient magnitude.
  • the rest of the tray may have a conical shape, tangential to the surface of the central zone.
  • the tray will be provided with insulation either below or above it.
  • the tray will be constructed from a metallic material, capable of resisting the low temperature of the dripping liquid, preferably the same material as the tank.
  • the insulating layer should be protected during the flotation by a water-proof film, for example, a plastic-based film.
  • the tray may be constructed from a material which does not resist low temperatures, preferably' normal steel, since the insulating layer will protect it from the aforementioned low temperatures.
  • the insulation layer must have a tight covering able to withstand the low temperatures of the dripping liquid.
  • the tight covering of the insulation layer when placed on the upper face of the tray, can be constituted of one or two superimposed layers of tight material.
  • the layer of tight material can be bonded to the insulating layer covering it completely, or can be independent of it, and be attached in sealed fashion along the whole of its free edge to the insulating layer or to the drip tray and in this way achieve a tight assembly defined below by the tray and above by the tight layer. Also this tight layer can be joined to the insulating layer at its centre; This system allows the detection of leaks and cracks at any time in the tight layer and in the tray by means of introducing gas under pressure without having to penetrate the limited space between the tray and the tank to make a visual inspection.
  • the tight covering is formed by two superimposed layers then they will be separate from the insulating layer and be joined at their free edges, forming a bag whose tightness can easily be checked by introducing gas under pressure.
  • the bag thus formed will be attached at its contour to the tray and rest on the insulating layer. Also, in this case the two layers can be joined together, at a series of intermediate points, thus reducing the volume of gas needed to test the water tightness, and to the insulating layer.
  • the deformation of the layer or layers, which might be caused by the pressurized gas will be confined to the defined space between the tank and the tray.
  • the layer or layers that form the tight covering must be of a material that will withstand the low temperatures of any escaping liquid, for example, Mylar, reinforced or not with glass-fiber cloth.
  • the insulating layer may be continuous or made of performed parts or panels.
  • the layer can be formed of an expanded polyurethane, polyvinyl chloride, polystyrene, or any other suitable material that meets the thermal requirements and presents a certain resistance to compression.
  • the insulating layer is formed by prefabricated pieces or panels, these will have a reduced surface area and so shrinkage caused by low temperatures, away from the upper face, will not produce grooves of excessive width which might cause bending stresses in the layer on layers of the tight covering when these layers have to withstand the liquid pressure coming from a possible leak in the tank.
  • the insulating layer is continuous, grooves will be machined in it in at least two different directions. These grooves should not penetrate the whole thickness of the material and should define intermediate portions that can contract under the low temperatures without giving rise to the formation of excessively wide intermediate grooves which would result in bending stresses in the layer or layers of the tight covering caused by the pressure of the escaping liquid caught in the tray. These grooves, machined in the surface of the insulating layer, will be filled at room temperature with pre-compressed insulating material, for example, glass-wool or rock-wool which will continue to fill out the grooves when the latter widen due to the shrinkage of the intermediary portions.
  • pre-compressed insulating material for example, glass-wool or rock-wool which will continue to fill out the grooves when the latter widen due to the shrinkage of the intermediary portions.
  • the insulating layer may also be provided with a reinforcing cloth or netting of high mechanical characteristics embedded in the mass of the insulating layer immediately below the bottom of the grooves to avoid the appearance of cracks below said bottom.
  • the tray is provided with a brim around its periphery pointing upwards and/or towards the inside.
  • the total collection of any leaks is assured by means of a deflecting plate which extends from the internal one of the shells forming the tank support and pours inside the free edge of the retaining brim of the tray.
  • the tray is also provided with a continuous exterior stiffening ring that may be situated on the free edge of the tray, preferably corresponding with the retaining brim or in an intermediate annular zone.
  • This ring will normally function in compression. The purpose of this ring is to absorb membrane stresses that are produced in the tray due to its own weight, the weight of the collected liquid, and the vertical accelerations. Once installed in the ship, the tray will be freely supported on a discrete number of supports through the stiffening ring.
  • the stiffening ring will also have external projections running down or preferably outwards which will cooperate with lateral retention elements independent of the ring, to avoid the general displacements of the tray in any perpendicular direction to the axis of revolution of the tank, but allowing any movement of the tray parallel to the axis of revolution of the tank, as well as expansions and contractions of a radial nature.
  • An insulating material is provided between the stiffening ring and the supports as well as between the afore-mentioned projections and the retention elements. This material should have sufficient resistance in compression to bear the weight of the tray and collected liquid and also the accelerations parallel and perpendicular to the axis of revolution of the tank. This material may not exist if the insulating layer of the tray has been placed on the upper face.
  • the tray supports and the lateral retention elements may be joined to the internal shell of the tank support or to the pedestal structure. In either case the tray supports and the lateral retention elements may be either independent of each other or joined. If the supports are joined to the pedestal structure they will be joined to the brackets placed on the inside of the skirt or will go directly to the skirt if these brackets have not been installed or are of reduced dimensions.
  • main supports there are other secondary supports that can either be independent or combined with the main supports or lateral retention elements. These supports are used to install jacks which allow the tray to be taken up and lowered to test the upper face of the tray and the insulation of the tank, having first of all removed any insulating material placed among the main supports and the stiffening ring.
  • FIG. 1 is a perspective view that partially shows the structure of the pedestal, the structure of the ship, and the lower part of the support.
  • FIG. 2 is a partial plan view of the ship.
  • FIG. 3 is a section on the line III-III of FIG. 2.
  • FIG. 4 is a similar view to FIG. 3 showing a variant embodiment.
  • FIG. 5 is a section on line V-V of FIG. 2.
  • FIG. 6 is a section on the line VIVI of FIG. 2.
  • FIG. 7 is a partial, schematic diametral section through the tank resting on its support with drip tray below.
  • FIG. 8 is a scaled-up detail of the supports of the drip-tray.
  • FIG. 9 is a view in the direction A of FIG. 8.
  • FIG. 10 is a section on the line X-X of FIG. 9.
  • FIG. 11 is similar view to FIG. 8 showing a variant embodiment.
  • FIG. 12 is a view similar to FIG. 1, but showing an embodiment of the invention in which portions of the double bottom and inner shell are omitted.
  • tank 1 is mounted on the ship 2 by means of a support made up of a peripheral structure 3, which forms a part of the tank shell 1. From this peripheral structure 3, two skirts or shells 4 and 5 go out. These skirts are stiffened at their lower part but not at the top. These skirts are used to transmit the corresponding forces to the ships structure.
  • the pedestal for the support of shells 4 and 5 is made up as shown in FIG. 1 of a horizontal platform 6 and a continuous reinforced skirt 7 that runs between the platform 6 and the double bottom of the ship, the skirt being joined by its lower edge to the double bottom 8 and by its upper edge the platform 6.
  • the upper edge of the skirt 7 is of the same perimeter as the lower edge of the internal shell 4 of the tank support and faces said lower edge of the shell 4.
  • the platform 6 runs between the upper edge of the skirt 7 and the inner shell 9 of the hull.
  • FIGS. 1 and 2 Between platform 6 and the skirt 7, there are some flat plates 10 mounted perpendicularly to the base plane of the ship. These are represented by dotted lines. These plates are stiffened and face the floors and longitudinal girders. These plates 10 are welded by their inside edge of the skirt 7, by their upper edge to the platform 6, and by their lower edge to the top 8 of the double bottom. On their outside edge, the plates facing the floors are welded to the inner shell of the ship 9, and the outside edges of the places facing the longitudinal girders are welded either to the skirt of the adjacent corresponding tank or to the extreme transverse bulkheads in the cargo area.
  • the skirt or external shell 5 of the tank support may reach the platform 6 or is bottom edge may be spaced away therefrom.
  • a secondary small skirt 11 as shown in FIG. 3.
  • This small skirt faces the afore-mentioned external shell 5 of the support.
  • This secondary skirt has a height substantially smaller than that of the main skirt and is joined by its upper edge to platform 6.
  • the secondary skirt 11 is also joined to the flat plates 10 at the lines of intersection with the same.
  • This secondary skirt is joined to the main skirt using intermediate parts 12 to which are joined the vertical stiffeners 12' of the skirt.
  • the internal edge of the platform 6 will be situated slightly inside the main skirt 7.
  • brackets 13 As shown in FIGS. 2 and 5 on the inside of the skirt 7 there are a series of brackets 13 having faceplates 14 and intermediate stiffeners 13'. for FIGS. 4 and 5 the stiffeners of the hull, outer shell, double bottom, etc. are not shown as these would be standard.
  • FIG. 5 which is a vertical section taken on the line VV of FIG. 2, shows the arrangement of these brackets 13, their faceplates l4 and the stiffeners 13'.
  • FIG. 5 shows the arrangement of the plates 10 facing the longitudinal girders. Plates 10 are between two consecutive skirts 7 and 7 having a common platform 6.
  • FIG. 6 which is a vertical section taken on the line VIVI of FIG. 2, the arrangement is also shown of the flat plates 10, in this case facing the floors, which by their external edges are welded to the inner shell 9 of the ship.
  • the stiffening elements of the plates are shown as dotted lines 15, while the stiffening elements of the platform 6 are shown by numeral l5.
  • FIG. 6 there can be seen the whole of the double bottom 8 and the, ships inner shell 9, in the area situated below the platform 6.
  • the part of the double bottom and inner shell situated below the said platform can be suppressed in which case these parts are not reinforced, and then the floors, longitudinal girders and transverse webframes terminate in faceplates to which the corresponding edges of the flat plates 10 are welded.
  • the double bottom is deleted the lower edges of the flat plates 10 are welded to the faceplate of the corresponding floor.
  • the inner shell 9 of the ship is omitted, the external edges of the flat plates 10 facing the floors are welded to the faceplates of the transverse web frames. See FIG. 12.
  • the inner shell 9 is discontinuous below the horizontal platform 6, degrading into the faceplates 40 of the webframes 42. Also, except for an annular extension 44, the top of the double bottom 8 degrades into the faceplates 46 of the double bottom floors 48.
  • the skirt 7 may be cylindrical, as shown in FIG. 3, or take the form of an inverted cone as shown in FIG. 4 in order to match the shape of the bow and stem of the ship. If the outer one of the shells 5 that form part of the tank support does not reach the platform 6, the small skirt 11 shown in FIG. 3 is not used, but instead only the main skirt 7, complying with the afore-said requirements, with its stiffeners l2.
  • FIG. 7 there is a tray 17 below the tank 1 which is used to catch any leaks of transported liquid.
  • This tray 17 is independent of the structure of the ship and of the tank support.
  • a peripheral rim 18 is added to prevent the liquid caught in the tray from being split by the motions of the ship .
  • This rim extends upwards and/or inwards. The collection of any leakage from the tray 17 is assured by means of a deflecting plate 19 that extends from the internal shell of the support into the inside of the free edge of the surrounding retention rim 18.
  • the tray 17 has an exterior continuous stiffening ring 20 that may be placed at the free edge of the tray as illustrated in FIG. 11, in which case it will correspond with the retaining rim 18 or be located in an intermediate annular zone as shown in FIGS. 7 and 8.
  • the purpose of this ring which would normally work under compression is to absorb the membrane stresses which are produced in the tray by its own weight, the weight of the collected liquid, and the vertical accelerations.
  • the tray is mounted on supports 21 which can be joined to the brackets 13 or to the skirt 7 in the case where the structure of the pedestal is not fitted with such brackets or the brackets are of small dimension, or, alternatively, to the internal one of the two shells that comprise the support, this depending on whether the stiffening ring 20 is situated in an intermediate zone of the tray or at its free edge.
  • the main support 21 is made up of a continuous platform 22 with reinforcement 23 at its free edge and supporting elements 24 situated at intervals coniciding with the brackets 25 which are coplanar with the brackets 13.
  • Reinforcing ring 20 has a continuous band 26 and also a small continuous skirt 27 which are perpendicular to one another and reinforced with brackets 28 and 29. Extending from the ring 20 there are some projections 30 having an inverted profile section 31 between which and the platform 22 of the main support 21 there is an insulating material 32 of sufficient compressive strength to withstand the weight of the tray, the collected liquid, and the accelerations parallel and perpendicular to the axis of revolution of the tank. On both sides of each projection 30 there is a guide 33 which prevents lateral displacement of the tray but does allow axial displacement and radial expansion.
  • the secondary supports which, in this case, are constituted by the same platform 22 used for the main support with a bottom reinforcement 34. Between this secondary support and the rim 35 of the ring there are jacks 36 that allow the elevation or lowering of the tray after extraction of the filling material 32 for inspecting the upper face of the tray at any given moment.
  • the secondary supports may be independent of the main supports 21.
  • the guides 23 can be independent of the supports 21. The stiffening ring 20 would then have projections housed between the guides 23 to prevent lateral displacements of the tray.
  • the supports take the form of a table or platform 22' joined to the internal shell 4 of the tank support which also has reinforcements 23'.
  • the lateral retention is also obtained by means of guides of the same nature as those illustrated in FIG. 9.
  • the jacks 36' are placed between the frame 37, shown by dotted lines, and the band 26'.
  • the main supports and the lateral retention elements or guides 23 can be joined to the internal shell of the tank support or to the pedestal structure. In both cases, the supports and the lateral retention elements can either be joined together or be independent. In the same way, the secondary supports can be independent or can be combined with the main supports or lateral retention elements.
  • the tray 17 will have an insulating layer 38 which, although in the described example is on the upper face of the tray, could equally well be located on the lower face.
  • the insulating layer will have a tight covering 39 able to withstand the low temperatures of any leaks from the tank. Consequently, the tray can be made from a normal steel or some other noncryogenic material.
  • the tray should be made of a metallic material capable of resisting the low temperatures of the liquid and preferably be of the same material as the tank itself.
  • the tight covering 39 can be formed by one or two layers.
  • the tight covering is tightly connected to the drip tray along its whole periphery, so that the existence of leaks can be detected by introducing gas under pressure between the two elements.
  • the tight covering 39 is made up of two independent layers, these are joined together at their periphery so as to form a bag which, in its turn, will be joined to the tray along its periphery.
  • This system makes it possible to determine, in case of a lask of the gas introduced between the tray and the adjacent tight covering, whether the leak is in the tray or in the lower layer of the tight covering. Shrinkage of the tight covering 39 will be absorbed by the portions of said tight covering which reproduce the shape of the knuckle between tray 17 and the surrounding retention rim 18.
  • the tray is independent of the tank allows said tank together with its support and corresponding tray to be assembled in a single operation. This is done either by lifting the assembly in which case the tray is attached to the support, at least during assembly operations, or by floating the assembly after having flooded the dock where the ship is being constructed.
  • the upper edge of the tray should be above the Waterline of the assembly and if the insulating layer is on the lower face of the tray it should be protected by a water-proof film.
  • the tray 17 can be constructed without stiffeners and made thin, without risk of buckling, during flotation of the assembly, at least the surface of the central part of the tray should be parallel to the bottom external surface of the tank so that the support area between tank and tray will be of sufficient magnitude.
  • the rest of the tray can have a conical shape as shown in FIG. 7 tangential to the surface of the central zone.
  • the tray is independent from the structure of the ship and outside the tank support, it can be built separately from the ship and installed jointly with the tank and the tank support.
  • the support system for the tray is of a simple design thus assuring perfect functioning and allowing inspection of both upper and lower faces.
  • the corresponding insulating material will be located so that in all conditions the structure of the ship will be protected against low temperatures.
  • a number of flat plates positioned between the platform and said skirt perpendicular to the base plane of said ship, said plates being stiffened and facing the floors and longitudinal girders and being welded by their internal and upper edges to said skirt and said platform, respectively, and by their bottom edge to the top of said double bottom, the external edges of said plates being welded to the inner shell of the ship, with the plates facing the floors, and to the skirt of an adjacent tank or to the end transverse bulkhead of the cargo tank zone, with the plates facing the longitudinal girders, a tray positioned under the tank independent of the structure of the ship and of the structure of the support, said tray having an insulating layer and a stiffening ring and being designed to catch possible small leaks of transported liquid, and a continuous leak deflection plate joined by its external edge to the inner shell of the tank support, the free edge of said tray being positioned next to the inner shell of the tank support below said deflec tion plate.

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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)
US393896A 1972-09-02 1973-09-04 Ships equipped with pressurized cargo tanks supported on continuous shells Expired - Lifetime US3899988A (en)

Applications Claiming Priority (1)

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ES72406340A ES406340A1 (es) 1972-09-02 1972-09-02 Perfeccionamientos en buques dotados de tanques de carga independientes del tipo de presion, apoyados en cascaras continuas.

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US3899988A true US3899988A (en) 1975-08-19

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US (1) US3899988A (es)
JP (1) JPS571476B2 (es)
BR (1) BR7306633D0 (es)
DE (1) DE2342509C3 (es)
ES (1) ES406340A1 (es)
FR (1) FR2197761B1 (es)
GB (1) GB1438357A (es)
IT (1) IT990278B (es)
PL (1) PL86313B1 (es)
SE (1) SE404681B (es)
SU (1) SU645539A3 (es)
YU (1) YU203373A (es)

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US4064005A (en) * 1975-05-12 1977-12-20 Commissariat A L'energie Atomique Device for supporting a nuclear boiler
US4090460A (en) * 1975-10-20 1978-05-23 Hitachi Shipbuilding & Eng. Co., Ltd. Spherical tank supporting system for low temperature liquified gas storage tank carrying vessel
US4099649A (en) * 1975-05-22 1978-07-11 Gaz-Transport Apparatus for transporting fluids at low temperature
US4233921A (en) * 1978-01-31 1980-11-18 Sener Ingenieria Y Sistemas, S.A. Transport vessels having liquid gas storage tanks
US5727492A (en) * 1996-09-16 1998-03-17 Marinex International Inc. Liquefied natural gas tank and containment system
US20070186834A1 (en) * 2006-02-14 2007-08-16 Electric Boat Corporation Method and apparatus for off-hull manufacture and installation of a semi-membrane lng tank
US20080083246A1 (en) * 2006-10-06 2008-04-10 Aker Kvaerner, Inc. Gas Conditioning Method and Apparatus for the Recovery of LPG/NGL(C2+) From LNG
US20080210305A1 (en) * 2004-09-21 2008-09-04 Aker Kvaerner, Inc. Liquified Natural Gas Sump For a Gravity Based Structure
US20080223858A1 (en) * 2007-03-16 2008-09-18 Jordan David L Universal support arrangement for semi-membrane tank walls
US20100012014A1 (en) * 2008-07-09 2010-01-21 John Randolph Holland Systems and methods for supporting tanks in a cargo ship
CN105333307A (zh) * 2014-08-14 2016-02-17 丹阳市利旺车辆部件有限公司 低温气瓶内胆纵向支撑件
US10065850B2 (en) 2012-08-01 2018-09-04 Gp Strategies Corporation Multiple pump system

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Publication number Priority date Publication date Assignee Title
JPS5251686A (en) * 1975-10-20 1977-04-25 Hitachi Zosen Corp Low temperature liquified gas carrying vessel
JPS5251685A (en) * 1975-10-20 1977-04-25 Hitachi Zosen Corp Low temperature liquified gas carring vessel
JPH052371U (ja) * 1991-06-26 1993-01-14 日本航空電子工業株式会社 コンタクト
JP5139902B2 (ja) * 2008-07-16 2013-02-06 川崎重工業株式会社 荷液運搬船

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US3312076A (en) * 1966-01-18 1967-04-04 James S Clarke Drip pan lng tank
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US3770158A (en) * 1971-05-24 1973-11-06 Technigaz Device for protecting the environment of a tank against failures thereof

Cited By (22)

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US4064005A (en) * 1975-05-12 1977-12-20 Commissariat A L'energie Atomique Device for supporting a nuclear boiler
US4099649A (en) * 1975-05-22 1978-07-11 Gaz-Transport Apparatus for transporting fluids at low temperature
US4090460A (en) * 1975-10-20 1978-05-23 Hitachi Shipbuilding & Eng. Co., Ltd. Spherical tank supporting system for low temperature liquified gas storage tank carrying vessel
US4233921A (en) * 1978-01-31 1980-11-18 Sener Ingenieria Y Sistemas, S.A. Transport vessels having liquid gas storage tanks
US5727492A (en) * 1996-09-16 1998-03-17 Marinex International Inc. Liquefied natural gas tank and containment system
US20080210305A1 (en) * 2004-09-21 2008-09-04 Aker Kvaerner, Inc. Liquified Natural Gas Sump For a Gravity Based Structure
US20090151618A1 (en) * 2006-02-14 2009-06-18 Nassco Method and apparatus for off-hull manufacture and installation of a semi-membrane lng tank
US7748336B2 (en) 2006-02-14 2010-07-06 General Dynamics National Steel and Shipping Company Method and apparatus for off-hull manufacture and installation of a semi-membrane LNG tank
US7469650B2 (en) 2006-02-14 2008-12-30 National Steel And Shipping Company Method and apparatus for off-hull manufacture and installation of a semi-membrane LNG tank
US20070186834A1 (en) * 2006-02-14 2007-08-16 Electric Boat Corporation Method and apparatus for off-hull manufacture and installation of a semi-membrane lng tank
US8499581B2 (en) 2006-10-06 2013-08-06 Ihi E&C International Corporation Gas conditioning method and apparatus for the recovery of LPG/NGL(C2+) from LNG
US20080083246A1 (en) * 2006-10-06 2008-04-10 Aker Kvaerner, Inc. Gas Conditioning Method and Apparatus for the Recovery of LPG/NGL(C2+) From LNG
US7896188B2 (en) 2007-03-16 2011-03-01 National Steel And Shipbuilding Company Universal support arrangement for semi-membrane tank walls
US20110132912A1 (en) * 2007-03-16 2011-06-09 Jordan David L Universal support arrangement for semi-membrane tank walls
US8430263B2 (en) 2007-03-16 2013-04-30 General Dynamics Nassco Universal support arrangement for semi-membrane tank walls
US20080223858A1 (en) * 2007-03-16 2008-09-18 Jordan David L Universal support arrangement for semi-membrane tank walls
US9022245B2 (en) 2007-03-16 2015-05-05 National Steel And Shipbuilding Company Universal support arrangement for semi-membrane tank walls
US20100012014A1 (en) * 2008-07-09 2010-01-21 John Randolph Holland Systems and methods for supporting tanks in a cargo ship
US8245658B2 (en) * 2008-07-09 2012-08-21 John Randolph Holland Systems and methods for supporting tanks in a cargo ship
US10065850B2 (en) 2012-08-01 2018-09-04 Gp Strategies Corporation Multiple pump system
US10836627B2 (en) 2012-08-01 2020-11-17 Cryogenic Industries, Llc Multiple pump system
CN105333307A (zh) * 2014-08-14 2016-02-17 丹阳市利旺车辆部件有限公司 低温气瓶内胆纵向支撑件

Also Published As

Publication number Publication date
ES406340A1 (es) 1973-12-01
PL86313B1 (en) 1976-05-31
IT990278B (it) 1975-06-20
SE404681B (sv) 1978-10-23
JPS4967385A (es) 1974-06-29
AU5928573A (en) 1975-02-20
DE2342509B2 (de) 1980-07-24
DE2342509C3 (de) 1981-06-11
SU645539A3 (ru) 1979-01-30
JPS571476B2 (es) 1982-01-11
DE2342509A1 (de) 1974-03-07
FR2197761B1 (es) 1976-09-17
FR2197761A1 (es) 1974-03-29
BR7306633D0 (pt) 1974-07-11
YU203373A (en) 1982-08-31
GB1438357A (en) 1976-06-03

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