DE1684740A1 - Roof or cover structure for hollow containers - Google Patents

Description

$ 90 2 12 / lei

WILLIAM HAMILTON, of Mill Brae, Old Guildford Hoad, Frimley Green, Camberley, Surrey (England)

"Roof or cover structure for hollow containers"

The invention "relates to a roof cover structure for refrigerated containers and is particularly directed to a sealed roof termination capable of superatmospheric To withstand pressure in the containers or to control them.

The roof termination structure according to the invention is special suitable for providing a lightweight end cover for containers of large surface area in the plane, wherein it does not require any intermediate support and, for example, containers can be mentioned in the training as large round cavities, which are excepted in the ground, these containers for the storage of.-liquefied

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Natural gas can be used. Bas soil around such cavities around is frozen, and over a leveled thickness, and is for the most part kept frozen by the liquefied natural gas. The roofs or end covers for such Containers are designed as wäraieisolierte structures that supported on .the bottom around the opening to the cavity; in a way that seals against the pressure of the gas that evaporates from the liquefied natural gas, provides whose boiling point is slightly lower than the ambient temperature is located, with control valves or outlet openings in front to prevent excessive Pressures under the large-area roofs or end covers = gen occur.

The roof termination structure according to the invention has a dome or ceiling made of impermeable sheet metal material on, furthermore a massive support ring made of impermeable Material in the nature of concrete that is in the area of the edge. the dome or the ceiling is provided and arranged next to it is, with such a dimension that it is on the Surface on the surrounding edge of the container rests, ultimately Einrichtimg, the gas-tight seals between the dome or ceiling and the support ring and between the support ring and the surface on the surrounding edge of the container provides, as well as a device that the dome or the ceiling is firmly anchored on the circumference of the support ring.

The mass of the concrete support ring, in turn impermeable,

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is; ; jross enough to hold down the dome or ceiling against any pressure that with likelihood usually occurs can be found inside the container.

In the case of a roof structure that is designed to it with a storage container trained in the ground used for liquefied natural gas is the dome or the ceiling is lined with a heat-insulating material, around the heat flow from the outside according to the contents of the container to limit.

The structure according to the invention also has precautionary travel a device that coincides with the outer circumference of the support X ^ inges closes and extends below the level of the support ring, furthermore a continuous channel, the is open at the top, such a channel being used to hold water and thereby a water seal to bring about, through which the escape of gas below the support ring is prevented.

The invention is by way of an exemplary embodiment in accompanying drawings. namely in the application as a roof structure for a storage container, which is designed as a cavity in the ground, of about 150 feet in diameter and about 150 feet in depth, for storage of liquefied natural gas, with the walls eii ^ es such containers are usually frozen over a reasonable thickness of at between IC ur.d 20? i; si.

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Figure Λ a sectional view, showing a cavity container and the basic arrangement of the roof structure according to the invention,

Figure 2 is a sectional view on a larger scale - - = of the support ring and the connections between the curved end and the support ring,

FIG. 3 is a sectional view also in a larger one Scale of a gas seal as an embodiment in the roof structure according to the invention,

Figure 4- is a schematic view of part of a truss structure for supporting the arched Roof cover,

Figure 5 is a view of one way of connecting the heat insulating material to the underside - · the truss structure,

Figure 6 is a perspective view of the exploded Parts for connecting the thermal insulation material to the truss structure, and

Figure 7 is a plan view of part of the truss structure with the thermal insulation material arranged thereon.

1098 16/0689 BAD OBlGiNAL

Referring to the drawings, FIG. 1 is a Storage container shown in the training as a large cylindrical cavity 1, which is excluded in the underground, a typical cavity size being 130 feet in diameter and is 130 feet in depth. "The earth walls 20 of the cavity are frozen to a reasonable thickness, typically 10 to 20 feet. "

The ground around the cavity 1 is leveled, and it is a layer of sand 2 applied to it (ans screeded), corresp. . ™ sifted.

On the sand 2 there are one or a number of layers made of thermal insulation and gas impermeable material 3 arranged in the manner known under the trade name ONAZOTE is known, and on the length thus formed is A solid support ring made of concrete is placed on it, usually iron-proven concrete, with a rectangular cross-section.

A dome or cover is formed of a plurality of profiled Λ th aluminum sheet or sheets of aluminum alloy which are welded together intersecting bars at their edges into a unitary circular whole, and the joining of the sheets 5 rests on a roof framework structure of themselves hollow 6 of aluminum or, aluminum alloy. Individual bars essentially lie on large circles of a sphere; towards _T part of the surface of the same the dome 5 is aligned »

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The hollow beams, usually rectangular. Cross-section, are provided with incisions or at the crossing points cut, as shown at 7 i * i of Figure 4, uzl zu allow them to interlock crosswise by lap joints (halving joints) to provide substantially smooth upper and lower surfaces 8 and 9 for the truss construction to ensure. Thin reinforced plates in = the way they are shown at 10 can be welded, riveted or otherwise attached below the intersection points 7 of the bars.

The outside diameter of the circular dome or ceiling 5 is larger than the outside diameter of the framework construction.

The dome-shaped sheet metal 5 rests freely on the framework support structure, and the latter is fastened to the concrete support ring 4 by means of double-ended, radially directed anchor bolts 11 (Figure 2) made of corrosion-resistant steel. The anchor bolts engage on one side in threaded holes in thrust bearing components or plugs 12. These are fitted and fastened in the ends of the hollow beams 6 of the framework and provided with external shoulders 13 in abutting contact with the edge of the hollow beams 6. On the other side access the anchor bolts in the inside and in the opposite sense threaded sleeves 14 · * These are arranged at one of its ends rotatably ^y on corrosion steel pivot pins 15, which are supported by a bar support member 16 made of aluminum alloy =. LeOberes is

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welded to a base plate 17 made of aluminum alloy, which in turn is supported on the more frequent surface of the concrete support ring 4, specifically in the neighborhood of the inner circumference thereof, and which itself is firmly connected to the concrete support ring with the aid of rails or rods 18 made of aluminum alloy, which are welded to the base plate 17 and cast or screwed into your concrete support ring 4-. The arrangement is such Concrete support ring M- domes, acting as pressure components against "the weight of the truss-6 and the dome-shaped sheet 5 that rests on it, and the dimensions and arrangements of the components are preferably determined so that the compressive forces are directed almost through the intersection of the diagonals of 'radial cross-sections of the in cross-section; right-angled concrete support ring. .

In the concrete support ring 4 ″ - a plate 19 made of corrosion-free steel is embedded on the outside of the beam support components 16 and the base plate 17 made of aluminum alloy, in such a way that it - with its upper part from the upper surface of the concrete support ring 4 This plate forms a continuous steel ring around the cabbage chamber. ■ '-.-.'

On the outside of the Netallringes 19 and _in: the same iNachbarschaft the upper edge, a plurality vpn profiiier-

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th connections 21 welded; the apart from each other around the cavity spaced around and radially outward extend with the top edges of the connectors facing outwards are inclined. On the upper edges of the metal ring 9 and the connection 21 is welded to an all-round continuous flange plate 22, the upper surface of which is essentially coincides with part of the surface of a cone.

w At the edge of the assembled aluminum alloy sheet 5, which forms the dome or the ceiling, is welded on a continuous and thick one. Edge strips 23 made of aluminum alloy, and this edge strip sits on the top surface of the flange plate 22 described above on below Interposition of a continuous impermeable sealing ring 24-, the edge strip 23, the sealing ring 24 and the. Flange plate 22 are screwed together by corrosion-free Steel bolts and screws 25 · --.-.-. .- ■

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Tie rods or bolts 26 made of corrosion-free steel can: are provided, which at one end by welding with. , the outer edge of the flange plate 22 and with the .. outer Edges of some or all of the terminals 21 are connected and the. are embedded or anchored on their exterior =, End in the concrete support ring 4, an arrangement both outwards as downward force components in the. to the Flansehplatte and on the edge strips 23 and on the Kuppeloder Provides tension exerted on the ceiling plate 5, which is welded to it is.

T09816 / 0689 BADORVGINAL:

Thermal insulation material in sheet form can be placed at the bottom the dome or ceiling 5, e.g. Attachment to the underside of the beams 6 of the framework of the roof structure ·. -,

For this purpose, blocks 27 »Figures 5, 6 and 7» plastic material are attached at suitable intervals to the undersides of the beams 6 of the framework and are fixed in position with the aid of fastening members 28 which are attached to W

are riveted to the sides of the beams 6 and have hooked ends 29 which are in sliding engagement with slots 30 in the sides of the blocks 27 such that the blocks 27 can adjust to some extent along the beams. Of thin films existing sheets or layers of insulating material 31, which are formed at the corners thereof such that they hisinpassen between the blocks 27, the beams 6 are mounted against the lower sides, lie against one another the adjacent edges, such as in which m

Figure 7 is shown. The arcs or layers 31 restrained by metal or other strips · 32 made of below against the connecting lines between the bordering ones. Arches or layers 31 are attached and held by further profiled fastening components 33 »the hook-like Parts 34- seated in further slot-like Recesses 35 in cLen .Seiten of the blocks 27 engage.

Gas can freely move behind the layers of insulation material 31 happen in such a way that the possibility of the formation of a

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between the upper and lower sides of the insulation in the roof dome 5 is turned off. The same insulation material can also be attached against the inside upper surface of the concrete support 4, as is shown at 36 in Figure 2, and may also be continued to form the above-described layer 3 of insulation material between the underside of the concrete support ring 4 and the bottom around the entrance to the cavity.

On the lower part of the radially outward facing surface of the massive concrete support ring 4 can be an enclosing, continuous, corrosion-free steel band 37 »FIG. 3, be attached that is attached by corrosion-free steel bolts or by nozzles 38 embedded in the concrete, with waterproof sealing rings 39 between - ~ the screws 40 and the tape 37 are turned on.

The continuous corrosion-free steel strip 37 is of such a vertical type. Height that it extends below the concrete support ring 4 and the layers of insulating material 3 and the sieved sand 2 below the concrete support ring, and also extends a short distance above the lower surface of the concrete support ring. In use, a channel 41 is cut into the ground, immediately outside the concrete support _ring , usually after the ground is frozen. That can happen in this channel

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lower end of the continuous corrosion-free steel strip 37 are introduced.

The outer wall of the gutter 4-1 is with aluminum sheet 4-2 lined, treads with corrugated aluminum sheets Weld joints and clean sand get into the ground of the channel introduced between the inner and outer Linings, .that by the continuous corrosion-free Steel band and through the welded aluminum sheets

4-2 are formed, and below the base of the go through- ~ the corrosion-free steel strip 37,

The depth of the lining components 37 "and 4-2 is so that if water is introduced between them, a sealing water seal, e.g. of the order of 48 Customs, received ". It should be noted that at least the moistened sand in the lower part of the channel freezes and so that the water seal is maintained.

A continuous ring 4-3 made of aluminum can be attached to the upper Edge of corrugated aluminum lining 4-2 to be attached, to stiffen them.

Such a water seal is effective from the point of view to the prevention of losses or "flow through." Gas from inside the container 1 between "the 'Ground" and the Underside of the massive concrete support ring 4, wihfen'd "the above described arrangement for connecting the "Kuppel'einheltbSer Ceiling. 5 i & it cLeni concrete support ring 4- in a similar way

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is full in preventing leakage or through-flow of gas over the concrete support ring 4.

The invention is not limited to the following claims. It includes all features from the above description and the drawing that are based on the State of the art are also inventive.

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Claims (1)

Claims ίΐ) Roof closure structure for a HohT container, marked by a dome or ceiling made of impermeable sheet metal material (5), by a solid support ring (4) impermeable material, such as concrete, located in the area of the edge of the dome or ceiling and below it is arranged and has such a dimension that it corresponds to the surface of the surrounding edge of the loading holder (1) is able to rest, also by a device, the gas-tight seals between the dome or Provides cover and the support ring and between the support ring and the surface on the surrounding edge of the container, as well through a facility. which is the perimeter of the dome or ceiling fixes on the support ring. 2. Roof termination structure according to claim 1, characterized by a truss arrangement of beams (6) of arched design, which spans the entrance to the cavity (-1) and is attached at its periphery to the support ring (4), and by an impermeable arched cladding flexible sheet material (5) »that freely on the truss arrangement rests and on the circumference with a gas-tight connection device to a continuous ^ impermeable Ring (19) is connected, which is in sealed and
Engagement with the support ring * (4 -) / on the outside of the circumference the truss arrangement is located. 1098 16/0689 " - 13 - 3. Roof closure structure according to claim 2, daaurcli gekena- ^e "indicates that the device for defining the Fael ^ - werkanordnun ^ g on the support ring (4) has metal plates (17) which are" attached "to inlets (rods 18) ( fixed to wood), which extend upwards from the support ring '(4), and that the device further comprises anchoring bolts (11) which are arranged under pressure between the outer ends of the beams (6) of the truss arrangement and the metal plates (17) are. 4. Roof termination structure according to claim 3 »characterized in that the anchoring bolts (11) at one end threaded with the metal plates (17) Sleeves (14) are connected, which are arranged for pivoting on the metal plates (17) about axes (15) which transverse ^; are directed to the longitudinal direction of the associated beams (6) of the truss arrangement. · 5. Roof termination structure according to claim 2, characterized in that that a flange plate (22), which consists of a continuous hanging that is connected to part of the surface of a cone .. coincides with the upper edge of the continuous impermeable ring (19) is welded and that the sere edge of the curved cover plate (5) with screwed to the continuous conical ring (22) is "C, where an impermeable seal (24) is interposed to provide a gas-tight connection. 1098 16/068 9 - 14 - 6. Roof closure structure according to claim i, characterized .draws that a channel (41) in the bottom on the outside i ^ yojd Style ring. (A-) is provided, which doze beneath. -.Support-ring-extends that a first-all around dui-chsehende Metal plate (37) on the outer surface of the support ring (4) is attached, which is located at its lower edge ■ extends into the channel (41), and that a second all around continuous metal plate (42) arranged as a lining for the outer wall of the inner wall (41) is that with its upper. "edge, located above the level .. the lower edge of the stütsrir-oes (4) is located, and that the lined gutter (41) da ^ u. serves to absorb water around a seal against gas leakage between the. Underside of the support ring (4) and the reason vorzuöhejj which surrounds the entrance to the cavity (1). * Roof closure structure according to any one of claims 2 to 6, characterized in that the sheet material (31) for ■ : U the thermal insulation is attached to the framework structure below the dome-shaped ceiling unit. 1 09 816/0889 _BAD - 15 -