DE1223860B - Container for storing or transporting low-boiling liquefied gases at around atmospheric pressure - Google Patents

Description

GERMAN

PATENT OFFICE

EDITORIAL

'' German class: 17 g - 4

Number: 1223 860

File number: S 863121 a / 17 g

Filing date: July 22, 1963

Open date: September 1, 1966

The invention relates to a container for storing or transporting low-boiling liquefied gases at approximately atmospheric pressure, consisting of an outer casing with supporting elements attached to its inner walls The interior is liquid-tight and liquid-tight, which are connected to one another keep thermally insulated panels enclosing the container at a distance from the outer housing.

It relates to the inner tank formed by the plates and in particular to the training the mounting of the panels on the support elements, which are attached to the inner walls of the outer housing are.

The known inner containers are constructed in such a way that the thermally insulated wall elements forming individual elements, such as wall panels or insulating layers one after the other with the help of auxiliary structures for assembly on the supporting elements be attached. So it is known to. First of all, an inner formwork is attached to the supporting elements attach and then apply insulation layers and finally another sheet metal jacket. These The type of construction of the inner tank on site means a complex construction in terms of assembly, especially since the walls of the inner tank must be appropriately arranged and well supported before they be combined with one another to form a tight tank vessel. The use of prefabricated panels is hardly possible. .

The aim of the invention is to create a construction of the inner container which avoids the above disadvantages, in that the inner tank is formed by prefabricated thermally insulated composite walls. die in place and place can be easily attached to the support elements attached to the outer housing.

According to the invention, this is achieved in a container of the type mentioned above in that the support elements consist of horizontally extending bars, on which spring catches are provided, which with the Plates fastened hook supports cooperate, the hook ends when sliding the. Hook supports slide on the bars under the spring catches, so that they snap into place behind the hook ends.

The advantage of this design is that heat-insulated panels can be of any construction and any Arrangement of the insulation can be prefabricated and made without difficulty and special aids Can be assembled on the spot to form an inner tank. A storage container constructed according to the invention is also particularly well suited for the transport of liquids because it is subject to bending and torsion loads can take in well.

Container for storage or transport
low-boiling liquefied gases at approx
Atmospheric pressure. ■

Applicant:

.'Shell Internationale. Research Maatschappij N.V., The Hague:

Representative:

Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse
and Dr. E. v. Pechmann, patent attorneys,
Munich 9, Schweigerstr. 2

Named as inventor:

Lionel Roy Prew,

Surbiton, Surrey (UK)

Claimed priority:
Great Britain July 24, 1962 (28 439,
28437)

The composite panels are attached to the outer housing individually by those engaging the support elements Hook supports held both in a horizontal and in a vertical position.

In an expedient embodiment of the storage container according to the invention, these are the support elements forming bars arranged in pairs, with a vertical bar between the bars of each pair Distance is provided so that each plate is supported stably on two support elements.

A particularly elastic connection between the plates and the supporting elements of the outer housing can be achieved by this, (leave the spring catches are arranged on one of the beams and the hook supports attached to the plates on the other Bars of the bar pair can be pushed open. For example, if the rigid outer casing is a Ship's hull, the inner tank is supported after the unification of its panels in such a way that stresses and loads resulting from the structure or movement of the ship transferred to the inner tank.

If the inner tank is used to hold liquefied gases, in particular low-boiling liquefied gases, then it is due to the structure according to the invention, a relative movement between the inner tank and the rigid

609 658/85

20th

ren outer shell possible to compensate for the heat-induced expansion or contraction of the inner tank.

In order to save "for low-boiling gases through the support or mounting structure To form thermal bridges between the inner tank and the outer container, which leads to the embrittlement of the material which the outer container is constructed, could lead, it is advantageous that the supporting elements forming Beams are made of wood .. An increase in the insulation effect can also be achieved in a simple manner cause padding, for example made of glass fibers, to be arranged between the plates and the beams are, which has the further advantage that the plates by means of the spring catches and hook supports are pressed against the beams with prestress.

The heat transfer resistance between the inner tank and the outer housing can also be increased by using plates built up in layers. Advantageous are -Major se layer plates consist of two flat, mutually parallel spaced jacket plates which by means connected to them ^ ^iWeIrplatte: · are held apart. The thermal insulation formed by the air cushion between the two plates can be improved by corrugated sheets made of a glass fiber reinforced polyester laminate, whereby / the heat conduction between the cladding sheets is reduced; A 2.25% nickel steel is preferably used as the outer jacket sheet with which the liquid to be stored comes into contact, as this does not become brittle even at very low temperatures'

It is advantageous if the jacket plate opposite the outer housing is also covered with a heat-insulating one Material, such as glass wool mats, to be covered, creating the free space between the jacket plate and the outer housing well used and the assembly of the inner tank is facilitated. In order to assemble the on this To avoid damaging the insulation applied to the cladding sheet and to prevent it from being damaged during the The heat-insulating material loses its structural strength due to vibrations a. non-corrosive, preferably galvanized Wire mesh covered. '. "'

The. Invention is explained in more detail with reference to an embodiment shown in the drawings tert. It shows

Inside of the inner hull 3 with the help of ■ support elements supported by the. loads that occur in the inner walls of the tank 5 can also be transferred to the ship's hull.
The composite plate shown in FIG. 2, from which the inner tank 5 is constructed, comprises two parallel, spaced-apart jacket plates 11 and 12, of which at least the former is made of a metal that does not embrittle even at low temperatures, for example a 2, 25% nickel steel. The metal sheets are connected at a distance from one another by a corrugated sheet 13 arranged between them. This corrugated sheet 13 is made of metal, e.g. B. nickel steel, or made of non-metal, ζ. Β. Made of polyester laminate reinforced with fiberglass, and is shaped into flattened zigzag waves (angle of inclination 60 °). The cladding sheet metal part 12 and 12 are connected to the corrugated sheet 13 by means of an adhesive made of heat-bonding epoxy resin. Binding can be carried out particularly firmly through combined waxing and pressure treatment. A heat-insulating layer, for example glass mat 14, is at least partially glued to the outer surface of the jacket sheet 12, which faces the outer housing in the installed state, with the aid of a bituminous mastic adhesive. The mats 14 are arranged in such a way that the areas 15 of the jacket sheet 12, in which the bars 20 attached to the outer housing engage, remain uncovered; they are by a gal ·; vanized wire mesh 16 covered .. Other suitable thermal insulation are asbestos, veneered balsa wood (raft construction), diatomaceous earth, "foamed" glass, .glass wool, .Kqrkmehl, plastic foam, for example; Polyurethane or polyester foam, slag wool, honeycomb paper or perlite. The thermal insulation rail can also be attached to the sheet metal, for example, by means of welded-on dowels. . :

The walls of the inner tank 5 are made of composite panels produced according to FIG. 2, the arrangement and support of which is shown in FIG. Along the Inner fuselage 3 are supporting elements in the form of horizontal wooden beams 20, which are attached to the Wan? th 23 of the inner hull 3 with the help of wooden spacers 21 and screw bolts 22 held are. The heads of the bolts 22 are sunk into the beams 20. Between the inner tank 5 and the A pad 25 made of glass fibers is arranged on the front side of the bars 20.

The horizontal bars 20 are paired with different

4 °

45

Fig. 1 is a cross section through a ship's hull 50 tical distance from each other on the inner hull angeals outer casing that holds an inner tank for storage. Between them and the spacers 21 Ehering and transporting a liquefied gas sind.die Federraster 24 clamped. This grid 24

consist of a splayed metal strip made of spring steel, the end section of which is inclined outwards and is directed downwards. Hook supports 26 are provided on the plates forming the walls of the inner tank 5 attached from an I-shaped metal strip made of cold-resistant 2.25% nickel steel. The hook supports can be riveted to the jacket plate 12! The hook end 28 is through a bend formed obliquely inwards.

The panels forming the walls of the inner tank are assembled as follows: '. ·

The hook support 26 is raised on the beam 20

if ballast water can be absorbed. Inside and the plate construction against the half of the inner fuselage 3 an inner insulating pad 25 is pushed at a distance that the hook end 28

having,

Fi g., 2 is a perspective view of a part of a composite panel, as they.zurHerstellung the walls of the inner tank according to Fi g. 1 can be used, and Fi g. 3 the sub-area A in FIG. 1.

According to FIG. 1, the rigid outer housing consists of an outer hull 2 and an inner hull. 3 of a double-shell hull 1; both body parts are made of metal plates. The inner hull _T 3 and the outer body 2 are spaced from each other, so that between the two shells, a gap 4 is formed, in which given ·

tank 5 arranged in which liquefied gas is stored can be. The inner tank 5 is against the hook support 26 under the spring razor 24 through slides and thereby this one behind the hook end

I 223

locks in place so that the plate is fixed in place. The hook support 26 is through the pad 25, which is seeks to expand, held in engagement with the spring catch 24. The fastened to the jacket plate 12 Glass wool mats 14 nestle tightly between the cushions 25, the beams 20 and the hook supports 26, so that good thermal insulation is ensured.

The plates for the ceiling of the inner tank 5 are inserted and fixed in the same way as that Panels for the side walls.

The bottom of the tank 5 is also made of the in F i g. 2 plates shown, only that here the Glass wool mats 14 can be replaced by a layer of polyurethane foam, which is the jacket sheet 12 completely covered and serves both as thermal insulation and as a support for the weight of the tank content is transferred to the inner hull 3. The bottom of the tank 5 is not attached to the inner hull 3.

After inserting the panels for the ceiling that Side walls and the bottom, the plates are connected to one another in a liquid-tight manner, for example welded.

If necessary, a heat exchange medium can be used in the space between the jacket plates 11 and 12 let it circulate. For the supply and discharge of such a liquid or gaseous medium then appropriate lines are to be provided, which, if the corrugated sheet 13 down and up over extends beyond the walls can be attached to the upper end of the walls. Appropriately the webs forming transverse surfaces of the corrugated sheet are then pierced, so that the heat exchange medium can flow through the space between the jacket plates 11 and 12 unhindered.

Claims (10)

Claims: 35 1. Containers for storing or transporting low-boiling liquefied gases at around atmospheric pressure, consisting of an outer housing, on the inner walls of which supporting elements are attached, which are liquid-tight and liquid-tight interconnected, the interior of the container enclosing thermally insulated Hold plates at a distance from the outer housing, characterized in that the support elements consist of horizontally extending There are bars (20) on which spring catches (24) are provided which are attached to the plates (11, 12, 13) attached hook supports (26) cooperate, the hook ends (28) when pushed the hook supports (26) slide through on the bars (20) under the spring catches (24), whereby snap them into place behind the hook ends (28). 2. Container according to claim 1, characterized in that the bars (20) are arranged in pairs with a vertical distance between the bars of each pair. 3. Container according to claim 1 or 2, characterized in that the spring catches (24) each arranged on one of the beams (20) and the hook supports attached to the plates (11, 12, 13) (26) can be pushed onto the other bar (20) of the bar pair. 4. Container according to one of claims 1 to 3, characterized in that the spring catch (24) made of splayed metal strips and the hook supports (26) made of L-shaped metal strips exist, wherein the hook end (28) is formed by a bend. 5. Container according to one of claims 1 to 4, characterized in that the bars (20) from Made of wood. 6. Container according to one of claims 1 to 5, characterized in that between the plates (11, 12, 13) and the bar (20) upholstery (25) made of glass fibers are arranged. 7. Container according to one of claims 1 to 6, characterized in that the plates (11, 12, 13) are built up in layers. 8. Container according to claim 7, characterized in that the plates (11, 12, 13) in per se known way of two flat, parallel spaced apart sheet metal cladding (11, 12) exist which are spaced apart by a corrugated sheet (13) connected to the jacket sheets are held from each other, the corrugated sheet (13) made of a reinforced with fiberglass Polyester laminate and the cladding sheets (11, 12) consist of 2.25% nickel steel. 9. A container according to claim 8, characterized in that at least a part of the outer Housing opposite cladding sheet (12) with a heat insulating material, such as Glass wool mats (14), is coated. 10. Container according to claim 9, characterized in that the heat insulating material is covered by a galvanized wire mesh (16). Considered publications:
British Patent Nos. 812375, 897 049,
900268. 1 sheet of drawings 609 658/85 8.66 © Bundesdruckerei Berlin