EP2238383B1 - Pressure container for a transport container arrangement - Google Patents

Abstract

The present invention concerns a pressure container (1) with a jacket comprising partial cylindrical jacket shells (2, 4) that are located parallel next to each other and define a bead (8, 10) in the longitudinal direction. The end faces thereof are closed off by a curved bottom (16, 18), wherein between the partial cylindrical shells (2, 4) a tractive element designed in particular as a flat wall (6; 6a, 6b) is arranged, the upper or lower edge (12, 14) of which extends into or penetrates the upper or lower bead region (8, 10). There is furthermore provided a shell element (42) running in the longitudinal direction and connecting the jacket shells (2, 4) and the tractive element (6), being firmly connected at least in sections to the jacket shells (2, 4) and to the particularly beveled edge (12, 12a; 14, 14a) of the tractive element (6), so that a girder structure is formed in the bead region (8, 10). The invention further relates to a transport container arrangement, particularly a tank container unit (100) having a pressure container (1) according to the invention.

Description

The present invention relates to a pressure vessel with a parallel, a longitudinally extending bead defining, juxtaposed part-cylindrical shell shell shell constructed whose front ends are each closed with a curved bottom. Pressure vessel with part-circular cylindrical shells whose cross-section is reminiscent of a lying eight, are for example from DE-A-36 06 247 , of the DE-A-31 25 963 of the DE-A-29 51 554 and the EP-1 067 326 B1 known. Such pressure vessels are particularly suitable for road vehicle transport containers, such as fankwagenaufliegeroder for tank container arrangements in which containers are required to exploit a space with reduced height particularly effective and at the same time to ensure high pressure resistance with low, weight-saving material use.

The best pressure resistance offers a circular cylindrical cross-section, which, however, only insufficiently exploits a rectangular construction space cross-section with horizontally extending longitudinal sides. Such a construction space cross-section with reduced height is filled, for example, with a plurality of juxtaposed, pressure-resistant, full-circle cylindrical containers ( Fig. 10 ). Even with such an arrangement still occur high space losses. Case-shaped, elliptical ( Fig. 11 ) or oval cross sections ( Fig. 12 ) do not offer the required pressure resistance.

Therefore, pressure vessels have been developed according to the preamble of claim 1. These offer significant advantages in terms of space utilization compared to fully cylindrical pressure vessels and are technically suitcase-shaped or oval tank sections, which are used in particular for petroleum products superior; However, they offer a poorer space utilization. Especially for long pressure vessels, it is helpful and sometimes necessary to provide tension elements between the partially cylindrical shells in order to couple the beads together by printing technology. It is a flat wall trained tension element which projects into the upper or lower bead area or passes through this, particularly easy to manufacture (see, eg EP 1067 326 A2, which is considered the closest to Technick). The partially cylindrical shells are, for example, attached to each other opposite to this wall and connected or welded to this.

It is the object of such a pressure vessel with a shell of partially circular cylindrical shells with respect to their space utilization and / or to improve their compressive strength on.

This object is achieved by a pressure vessel according to claim 1, wherein a shell element is provided, which connects the shell shells, and the tension element together. This shell element then closes the bead area - at the top as a roof element and at the bottom as a bottom element - and forms with these elements or the enclosed areas a profile support structure in the gusset area, which additionally acts to stabilize both against internal and external pressure loads and against envelope loads.

For applications where a double jacket is required, for example, for containers that are to be suitable for the storage of dangerous goods, without special structural measures such as drip pans are available, the measure is used according to claim 2.

By extending in the longitudinal direction bulges (meaning a cylindrical / prismatic curvature around a longitudinal axis) or edging, the dimensional stability of the shell elements is further increased (claim 3).

According to claim 4 is provided, the area which results from the different opening contours of the curved bottom and the shell (the shell shells) to close with a plane, perpendicular to the tank longitudinal axis gusset element.

An additional stabilization occurs when, according to claim 5, the gusset elements are each also connected to the front ends of the tension element.

Printing technology and manufacturing technology, such a gusset element according to claim 6 is advantageous; especially if it is with an outer contour area of the inner Circumferential contour of the curved bottom follows, so can be used in this, and has an inner contour region which projects inwardly beyond the bead region into the interior of the container, so that the end wall peripheral contour of the jacket shell always runs on the facing surface of the gusset element. Thus, the coat formed from the shells with its front ends in each case to the open end of the curved bottoms, in which the corresponding gusset elements are inserted flush mounted, are clean, without requiring additional passport or notching would be required. At the same time, the contour regions meet at an acute angle in the crest or sole regions of the shell shells and there provide a pressure-technically advantageous reinforcement, which absorbs the stress peaks present there, caused by the internal pressure of the container.

According to claim 7, the reinforcement is further improved and the stress peaks are further degraded, if at the ends of the gusset elements respectively rib-like extensions are provided which go beyond the common peripheral contour of the bottom and shell shell substantially following the apex or sole region, in which the voltage spike occur.

According to claim 8, the shell shells on differently curved peripheral portions. In particular, the curvatures-in the upper and lower bead regions-that is, with a wider radius of curvature-are executed than the curvatures of the peripheral sections which connect the upper apex to the lower sole region of the shell shells and form the lateral belt regions of the container. By this measure, the depth of the bead, which is formed at the interface between the longitudinally extending part-cylindrical shell shells, reduce and thus increase the useful volume of the pressure vessel, without the compressive strength would be substantially reduced. At the same time it is easier to connect a curved bottom whose opening spans this smaller bead area, since the cross-sectional difference between the opening cross-section of the bottom and that of the shell is reduced.

In addition, the curvatures in the upper and lower bead area can also be varied relative to one another. That is, the bead depth is different at the bottom of the tank than at the top. A stronger curvature - narrower radius - leads to a lower bead and a lower curvature - larger radius - to a shallower bead. A flatter bead in the lower area, for example, for the complete emptying of the adjacent Sole areas of the individual shell shells be helpful. A deeper bead, however, gives such a pressure vessel in this area a higher dimensional stability, so that it can be stored, for example, along the tank soles extending saddle profiles - for example, the side members of a semitrailer or the loading skids for a hook lift system.

According to claim 9, it is also possible to provide circumferentially different wall thicknesses.

Claim 10 relates to a transport container assembly which is provided with a pressure vessel according to the invention.

Figur 1

eine perspektivische Ansicht eines erfindungsgemäßen Druckbehälters,

Figur 2

eine perspektivische Querschnittsansicht (Schnitt A-A) des Druckbehälters aus Figur 1,

Figur 3

eine perspektivische Längsschnittdarstellung (Schnitt B-B) des in Figur 1 dargestellten Druckbehälters,

Figur 4

eine perspektivische Ansicht des Druckbehälters aus Fig. 1, bei dem ein Stirnboden weggelassen ist,

Figur 5

eine perspektivische Darstellung des in Figur 4 dargestellten Behälters ohne die Zwickelbleche,

Figur 6

eine perspektivische Darstellung einer Mittelwand mit geneigten Zwickelelementen,

Figur 7

die Ansicht eines alternativen Zwickelelements in zwei Ausführungsalternativen,

Figur 8

eine schematische Darstellung zwei alternativer Querschnittsausführungen des zylindrischen Tankabschnitts

Figur 9

eine Tankcontainereinheit mit einem erfindungsgemäßen Behälter,

Figur 10

einen doppelzylindrischen Querschnitt nach dem Stand der Technik,

Figur 11

einen elliptischen (linke Hälfte) und einen kofferförmigen (rechte Hälfte) Querschnitt nach dem Stand der Technik, und

Figur 12

einen ovalen Querschnitt nach dem Stand der Technik.

Embodiments of the present invention will be described below with reference to the drawings. It shows

FIG. 1

a perspective view of a pressure vessel according to the invention,

FIG. 2

a perspective cross-sectional view (section AA) of the pressure vessel FIG. 1 .

FIG. 3

a perspective longitudinal sectional view (section BB) of in FIG. 1 illustrated pressure vessel,

FIG. 4

a perspective view of the pressure vessel Fig. 1 in which a forehead bottom is omitted,

FIG. 5

a perspective view of the in FIG. 4 represented container without the gusset plates,

FIG. 6

a perspective view of a middle wall with inclined gusset elements,

FIG. 7

the view of an alternative gusset element in two alternative embodiments,

FIG. 8

a schematic representation of two alternative cross-sectional embodiments of the cylindrical tank portion

FIG. 9

a tank container unit with a container according to the invention,

FIG. 10

a double-cylindrical cross-section according to the prior art,

FIG. 11

an elliptical (left half) and a box-shaped (right half) cross-section according to the prior art, and

FIG. 12

an oval cross-section according to the prior art.

The in the FIGS. 1 to 5 illustrated pressure vessel 1 comprises two part-cylindrical shell shells 2, 4, which, as in the Figures 2 and 5 recognizable, are welded in the longitudinal direction with a trained as a flat wall 6 tension member. The flat wall 6 has the same length as the part-cylindrical shell shells 2 and 4.

Each of the jacket shells 2, 4 comprises differently curved peripheral sections 2a, 2b, 2c and 4a, 4b, 4c, respectively. The peripheral portions 2a and 4a extend from the seam with the flat wall 6 to the apex line 7 of the respective shell shells 2 and 4. Starting from the apex lines, the peripheral portions 2b and 4b respectively extend to the lower sole lines 9 of the shell shells 2, 4, of which the peripheral portions 2c and 4c extend to the flat wall 6. In this case, the circumferential portions 2b and 4b in the belt area have a radius of curvature of 600-1300 mm, while the upper and lower peripheral portions 2a, 2c and 4a, 4c have a radius of curvature of 600-3000 mm.

These radius ranges are for tank containers or vehicles with a max. Width of 2600 mm specified. Other dimensions may result in correspondingly different radius ranges and ratios, which are then adapted to the actual external dimensions of the tank containers or vehicles (rail, truck).

The peripheral portions 2a and 4a form an upper bead portion 8 and the peripheral portions 2c and 4c have a lower bead portion 10. The upper end 12 and the lower end 14 of the flat wall 6 protrude into the bead areas 8 and 10; the lower end 14 to the level defined by the sole lines 9 of the shells 2 and 4 and the upper end 12 beyond the plane defined by the crests 7 of the shells 2 and 4 level. Both ends 12 and 14 are provided for stabilization with a fold 12a and 14a. The flat wall 6 is provided with a passage opening 50, which is reinforced with a collar 52.

The ends of the shell shells 2 and 4 are closed with curved bottoms 16 and 18 ( Fig. 1 and 3 ), which in turn via a connected end ring 20 in a container frame 22 (FIG. FIG. 1 and 9 ) can be inserted.

For compensating and closing the cross-sectional difference between the bead regions 8 and 10 and the oval bottom cross-section, there are provided in each case gusset elements 24 and 26 which are arranged as flat sheets transverse to the longitudinal direction. In the illustrated embodiment, the lower gusset elements 26 are each provided with an outer contour region 28 ( Fig. 4 ), which follows the straight inner peripheral contour portion of the curved bottom 16 and 18 and extends between the two sole lines 9 of the part-cylindrical shell shells 2 and 4. An inner contour region 30 runs within the circumferential contours of the circumferential sections 2c and 4c which define the bead region 10. The outer contour region 28 and the inner contour regions 30 extend approximately at an acute angle to one another and meet in the ends 32 which lie in the region of the sole regions (sole lines 9).

At the upper gusset element 24, the outer contour region 34 likewise follows the straight upper circumferential contour section of the bottoms 16 and 18 and, with its inner inner contour regions 36, extends to the ends 38, which terminate analogously to the lower gusset elements 26 in the vertex regions (apex lines 7). While the lower gusset elements 26 is arranged completely within the bottom contour 1, the outer contour region 34 of the upper gusset element 24 protrudes beyond the bottom contour and extends outside thereof approximately at the same height as the fold 12a.

Fig. 6 shows an embodiment (tank shells 2, 4, not shown) in which gusset elements 24a, 26a are provided which also extend transversely to the container but are inclined in the longitudinal direction. Such an execution allows it as a tension element Serving flat wall 6 to shorten areas and thus saving material and weight. At the upper out of the tank gusset element 24a of the outer contour region 34a is bent, which is so coupled to the fold 12a and the end 12 of the flat wall 6 (welded).

In the shell shells 2 and 4 openings 40 are provided in the typical container connections such as manhole, filling connections, ventilation connections, safety valve connections are used (see Fig. 4 ).

In the container vertex, an additional shell element 42 is provided, which is at least partially welded at its side edges 44 in the apex areas with the shell shells 2 and 4 and at its front ends 46 with the upper gusset elements 24. In the middle of the shell element 42 extends in the longitudinal direction of an edging 47, which comes to lie approximately on the fold 12a and is fixed on this via hole welds 48. Thus, the peripheral portions 2a, 4a, the upper end 12 of the flat wall 6 with the fold 12a and the shell member 42 form a stabilizing longitudinal support unit which is closed at its end by the upper gusset elements 24 and thus additionally stabilized.

The jacket shells 2 and 4 surrounds in the illustrated embodiment ( FIG. 1 . 2 and 4 ) a double jacket 5, each of which ends in the upper region (approximately at the maximum level) of the pressure vessel 1 and the sole areas 2b, 4c and thus also the lower bead area 10, between the sole lines 9 extending completely encloses completely. This double jacket 5 prevents damage to the shells 2 and 4, the escape of cargo. It can be supplemented by (not shown) additional outdoor floors, which then also form a double jacket in the region of the curved floors 16 and 18. In the lower region, the double jacket 5 can also be connected to the folded edge 14a at the lower end 14 of the flat wall 6 for further stabilization via hole welds. A similar fixation can also take place in the sole regions via intermediate layers (eg double sheets) inserted there on the outer side of the shell shells 2 and 4, so that here as well a stabilizing carrier element is realized in the lower bead region 10.

In FIG. 5 is the double jacket 5 omitted. In a non-illustrated embodiment, a flat, curved or beveled shell element can be arranged in the lower bead region 10, which then defines a similar support structure as the upper shell element 42.

In the illustrated embodiment, the ends 32, 38 of the gusset members 24 and 26 extend in the sole and crest regions of the shells 2 and 4, respectively, which also form the transitions at which the straight peripheral portions of the plates 16 and 18 merges into the curved peripheral portions , This point is therefore particularly critical in terms of printing technology. In order to further reduce the voltage peaks occurring there, in particular in the case of internal pressure, the embodiment according to FIG FIG. 7 a rib-like extension 132a, 132b is shown, which go beyond the common circumferential contour of bottoms 16, 18 and shell shells 2, 4 beyond the apex lines 7.

In the embodiment a (left), the gusset element 24 is enlarged overall and projects with the region 132a over the left-hand crest line 7. In the embodiment b (right), only one lug 132b is provided which protrudes beyond the crest line 7.

In Fig. 8 further cross-sectional variants are outlined, in which the cylindrical shell region, which comprises the shell shells 2, 4 and the flat wall 6, are made of one (version A) and two (version B) pieces, in the respective planar regions 6; 6a 6b are bent against the curved shell shells 2, 4, and the shell ends are respectively welded to the edge lines 102, 104. The two-part embodiment B comprises two shell elements 2, 4 each having a planar portion 6a, 6b. In this construction as well, the shell shell ends on the crease lines 102, 104 and the planar portions 6a, 6b are welded to each other in the longitudinal direction of the container (along the joint 106).

There are also embodiments (not shown) in which the shell shells not only have independent radii of curvature, but in which circumferentially different wall thicknesses are provided. This can be compensated in the other (larger) radii of curvature usually higher compressive stresses. This stress-resistant design allows further weight savings or higher pressure loads.

In such containers, which are provided with a double jacket 5, this outer jacket 5 can also be used as an effective component for receiving pressure loads. Prerequisite for this is a force-transmitting coupling between inner container and outer container. This is done for example via a provided between the inner and outer walls support grid (not shown), which point or line allows a power transmission between the container walls. At particularly sensitive points, additional gusset plates for coupling (not shown) can also be provided, which allow a particularly effective removal of the load peaks occurring on the inner wall into the outer wall.

FIG. 9 shows the pressure vessel 1, in a tank container unit 100, in which it is coupled via the end rings 20 with this. The illustrated tank container unit 100 is suitable for a hook lift and comprises loading skids 101 and an aggregate space 102 as well as a - folding terrain unit 103, so that the unit shown can be used as a largely self-sufficient supply unit.

Other variants and embodiments of the present invention will become apparent to those skilled in the scope of the claims.

Claims (10)

1. A pressure container (1) with a casing which is built up from parallel, partially cylindrical casing shells (2, 4) arranged adjacent to each other and defining a corrugation (8, 10) extending in the longitudinal direction and the front ends of which are closed in each case by a convex base (16, 18), and a traction element, which is designed in particular in the form of a flat wall (6; 6a, 6b) and the upper and lower edges (12, 14) of which project respectively into the upper and lower corrugation areas (8, 10) or pass through them, is arranged between the partially cylindrical shells (2, 4), characterized in that a shell element (42) is provided which connects the casing shells (2, 4) and the traction element (6) and extends in the longitudinal direction and which is connected in a fixed manner at least locally to the casing shells (2, 4) and to the edge (12, 12a; 14, 14a) - in particular bevelled - of the traction element (6), so that a carrier structure is formed in the corrugation area (8, 10).
2. A pressure container (1) according to claim 1, in which the shell element (42) is a component of an outer casing (36) which surrounds the casing (2, 4) at least in part and is joined to the latter in a sealed manner.
3. A pressure container (1) according to claim 1 or 2, wherein the shell element (42) has a convexity or an edging (47) extending in the longitudinal direction.
4. A pressure container (1) according to claim 2 or 3, in which an opening contour of the convex base (16, 18) extends differently in the corrugation area than that of the casing shells (2, 4) and the area defined in this way is closed by means of a flat triangle element (24; 26) extending in a plane at a right angle to the longitudinal axis of the tank.
5. A pressure container (1) according to claim 4, in which the triangle element (24; 26) is connected to an end face of the traction element (6; 6a, 6b) and of the shell element in a fixed manner.
6. A pressure container (1) according to claim 4 or 5, in which the triangle element (24; 26) has an external contour region (28; 34), which follows the internal peripheral contour of the convex base (16, 18) in the corrugation area (8, 10), and an internal contour region (30; 36), which extends inside the peripheral contour of the casing shell (2, 4) in the corrugation area (8, 10), wherein the two contour areas (28; 34; 30; 36) converge in ends (32; 38) situated in the apex or foot area (7, 9) and extend substantially at an acute angle with respect to each other.
7. A pressure container (1) according to claim 4, 5 or 6, in which the ends (32; 38) of the triangle element have a rib-like extension (132a; 132b) which, following the common peripheral contour of the base (16, 18) and the casing shell (2, 4), extend beyond the apex or foot area (7, 9).
8. A pressure container (1) according to any one of the preceding claims, in which at least one casing shell (2, 4) has differently curved peripheral portions (2a, 2b, 2c; 4a, 4b, 4c), in particular a peripheral portion (2a, 2c; 4a, 4c) in the upper and lower corrugation area (8, 10) and a peripheral portion (2b; 4b) between an apex and a foot area (7, 9), wherein the peripheral portion (2b; 4b) between the apex and the foot area is curved to a greater degree than a peripheral portion (2a, 2c; 4a, 4c) in the upper and lower corrugation area (8, 10) and/or the peripheral portion (2a; 4a) in the upper corrugation area (8) is curved to a greater or lesser degree than the peripheral portion (2c; 4c) in the lower corrugation area (10).
9. A pressure container according to claim 8, in which peripheral portions (2a, 2b, 2c; 4a, 4b, 4c) are provided with different wall thicknesses.
10. A conveying container arrangement, in particular a tank container unit (100) with a pressure container (1) according to any one of the preceding claims.

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