DE202015009501U1 - Pressure vessel or pressure line - Google Patents

Abstract

A pressure vessel (100; 200; 300) for storing a fluid or pressure conduit for conducting a fluid comprising a first wall (1) and a second wall (2) enclosed by the first wall (1); the second wall (2) enclosing a volume (21) for storing or conducting the fluid; wherein the first wall (1) has at least one planar section (1a); and wherein the second wall (2) in the region of the planar portion (1a) of the first wall (1) has at least one cambered portion (2a) which is curved towards the volume (21) enclosed by the second wall (2).

Description

The invention relates to a pressure vessel for storing a fluid and a pressure conduit for conducting a fluid having a first wall, a second wall enclosed by the first wall and a volume enclosed by the second wall for storing or directing the fluid.

Up to now, pressure vessels or pressure lines with a round cross section have been used predominantly for storing and guiding fluids, since in this case a pressure force exerted on the wall of the container or line by an overpressure in the storage or guide volume acts perpendicular to the wall, so that the wall is evenly loaded.

In many applications, however, it is desirable or even necessary to insert the pressure vessel or the pressure line into a non-circular geometry. For example, pressure lines with a round cross section are often accommodated in a shaft with a rectangular cross section, or spherical pressure vessels are arranged in a parallelepipedic storage or transport volume. In the cases mentioned, the available volume of the shaft, the storage or the transport volume can not be used optimally for receiving the pressure line or the pressure vessel with a round cross section. This necessarily leads to efficiency losses.

However, adapting the shape of the pressure vessel or pressure line to the non-circular geometry of the well, transport or storage volume is usually impractical because pressure vessels or pressure lines of non-circular cross-section due to the high pressure forces inside the container or the Line can sometimes be greatly deformed. This can lead to material fatigue or even leaks.

The present invention is therefore an object of the invention to provide a pressure vessel and a pressure line with at least partially non-circular cross-section, which undergo the smallest possible deformation by pressure forces inside the container or the conduit and are as stable and durable as possible.

This object is achieved by a pressure vessel and by a pressure line according to claim 1. Particular embodiments are described in the subclaims.

So proposed are a pressure vessel for storing a fluid and a pressure line for conducting a fluid. The fluid is z. As a gas, a liquefied gas or a liquid. The pressure vessel and the pressure line each comprise at least:
a first wall and a second wall enclosed by the first wall;
wherein the second wall encloses a volume for storing or directing the fluid;
wherein the first wall has at least one flat portion or a flat portion; and
wherein the second wall in the region of the planar portion of the first wall has at least one cambered portion or a cambered area, which is curved towards the volume enclosed by the second wall.

The fact that the first wall has at least one flat portion, the pressure vessel or the pressure line can be easily adapted to a variety of geometries or inserted into a variety of geometries with efficient use of the available space, in the case of a pressure line, for example, in a Shaft with a polygonal (eg rectangular) cross section and in the case of a pressure vessel, for example in a storage or transport volume with a polygonal (eg rectangular) cross section. Characterized in that the second wall in the region of the planar portion of the first wall has a cambered portion which is curved towards the enclosed by the second wall storage or guide volume, the second wall in the cambered area in comparison to a non-cambered second wall absorb a greater pressure force exerted by an overpressure in the storage or guide volume on the second wall, without the pressure vessel or the pressure line being noticeably deformed.

In the case of the pressure vessel, the inner second wall completely encloses the storage volume in all spatial directions. The second wall then forms a closed container from which the fluid can not escape. Likewise, the outer first wall in the case of the pressure vessel completely surrounds the inner second wall in all spatial directions. The first wall also forms a preferably completely closed outer container, in the interior of which the inner container formed by the second wall is arranged.

In contrast, the proposed pressure line is designed in the manner of an at least partially non-round tube, wherein the second wall forms an inner wall of the tube and wherein the first wall forms an outer wall of the tube. The pressure line thus has at least one inlet opening and one outlet opening. The fluid can then flow in through the inlet opening into the pressure line and through the Outlet outlet flow out of the pressure line. In the case of the pressure line, therefore, the guide volume for guiding the fluid is preferably completely enclosed by the inner second wall only parallel to a plane, the plane usually being oriented perpendicular to the flow direction of the fluid through the pressure line. Accordingly, in the case of the pressure line, the inner second wall is completely enclosed by the outer first wall only parallel to the said plane. The direction of flow is typically parallel to the planar surface plane of the planar portion of the first wall. The second wall encloses the guide volume so normally at least perpendicular to the plane surface plane of the flat portion of the first wall media-tight. Likewise, the first wall normally encloses the second wall perpendicular to the planar surface plane of the planar portion of the first wall.

The first wall and / or the second wall can / can be formed in one or more parts. The first wall and / or the second wall can enclose the enclosed storage or guide volume in a media-tight manner. The first wall and / or the second wall may be formed of any material or comprise any material suitable for the purpose described herein. For example, the first wall and / or the second wall may comprise a metal or a plastic or may be formed from a metal or a plastic.

The cambered portion of the second wall and the planar portion of the first wall may be formed and arranged relative to each other such that a pressure exerted by an overpressure in the storage volume on the cambered portion of the second wall pressing force while maintaining the crowning over a Edge region of the cambered portion of the second wall in the first wall can be introduced. Preferably, the pressure force can be introduced into the first wall via an edge region of the planar section of the first wall.

The edge region of the cambered portion of the second wall, via which the pressure force can be introduced into the first wall, can completely or at least partially enclose or surround the cambered portion. For example, the edge region of the cambered portion, via which the compressive force can be introduced into the first wall, limit the cambered portion on two opposite sides of the cambered portion. Preferably, the cambered portion is continuously curved towards the storage volume or guide volume enclosed by the second wall, so that the pressure force can only be introduced into the first wall via the edge region of the cambered portion of the second wall. Preferably, the cambered portion of the second wall and the planar portion of the first wall are formed and arranged relative to each other such that the compressive force is additionally introduced only along the edge region of the planar portion of the first wall in the first wall. For example, the cambered portion of the second wall may be formed such that the cambered portion is continuously curved in the portion of the cambered portion other than the peripheral portion of the cambered portion. Thus, the compressive force exerted on the cambered portion can be introduced into the first wall in particular such that the compressive force in the flat portion only causes an effective tensile stress within and along the surface of the flat portion, without the planar portion or the first wall thereby noticeably is deformed.

Along the edge region of the cambered portion, the second wall may be continuous or at least partially joined or connected to the first wall, preferably only along the edge region of the cambered portion and not otherwise, different from the edge region of the cambered portion of the cambered portion. Preferably, the edge portion of the cambered portion along an edge portion of the planar portion of the first wall is joined or joined to the first wall, preferably only along the edge portion of the planar portion and not otherwise from the edge portion of the planar portion other than the flat portion. Depending on which material the first and the second wall are formed, is for joining the first wall with the second wall a variety of joining techniques into consideration. For example, the first wall and the second wall may be glued, welded, soldered, riveted or screwed. It is not necessary that the first wall and the second wall are in direct contact with each other. It is also conceivable that the first wall and the second wall are connected to each other via further layers or elements which are arranged between the first wall and the second wall.

The joining of the second wall with the first wall along the edge region of the cambered portion can give additional stability to the pressure vessel or the pressure line. In particular, this compound can contribute to the fact that the crowning retains its curved shape when a pressure force is exerted on the crowning by an overpressure in the storage or guide volume. With this arrangement, the pressing force exerted on the cambered portion in particular be introduced into the first wall such that the compressive force only causes an effective within and along the surface of the flat portion tensile stress, without the flat portion or the first wall is thereby appreciably deformed.

The first wall can form or have at least one inner edge on an inner side of the first wall facing the second wall, wherein the first wall is angled toward the second wall along the inner edge and wherein the inner edge of the first wall limits or at least the planar portion of the first wall partially limited. Typically, the inner edge is straight. The inner edge of the first wall may, for. B. be identical to the aforementioned edge region of the planar portion of the first wall or at least partially coincide with the aforementioned edge region of the planar portion of the first wall.

The second wall can then form or have an outer edge on one of the first wall facing outer side of the second wall, wherein the outer edge of the second wall limits the cambered portion of the second wall or at least partially limited. The outer edge of the second wall may, for. B. identical to the aforementioned edge region of the cambered portion or at least partially coincide with the aforementioned edge region of the cambered portion. Typically, this outer edge of the second wall is also formed.

The outer edge of the second wall bounding the cambered portion or at least partially delimiting can then be accommodated in a form-fitting manner in the inner edge of the first wall or in the region of the inner edge of the first wall. Thus, a pressure exerted by an overpressure in the storage or guide volume on the cambered portion of the second wall compressive force while maintaining the crown on the outer edge of the second wall and on the inner edge of the first wall in the first wall can be introduced. In this arrangement as well, the compressive force exerted on the cambered portion can be introduced into the first wall in particular in such a way that the compressive force causes only an effective tensile stress within and along the surface of the flat portion, without the flat portion or the first wall appreciably thereby is deformed.

The outer edge of the second wall and the inner edge of the first wall need not necessarily be in direct contact. For example, it is conceivable that a spacer is arranged in the region of the inner edge of the first wall between the first and the second wall. In this case, a compressive force exerted on the cambered section by an overpressure in the storage or guide volume can be introduced into the first wall via the spacer.

The first wall can also form or have two inner edges on the inner wall of the first wall facing the second wall, which delimit or at least partially delimit the planar section of the first wall on mutually opposite sides of the planar section, the first wall along the inner edges is angled towards the second wall. These inner edges can coincide continuously or at least partially with the aforementioned edge region of the flat portion. Usually, the inner edges of the first wall are aligned parallel to each other.

The second wall may then have two outer edges on one of the first wall facing the outer side of the second wall, wherein the outer edges each limit the cambered portion of the second wall on opposite sides of the cambered portion or at least partially limit. These outer edges may coincide continuously or at least partially with the aforementioned edge region of the cambered portion. The outer edges of the second wall are usually aligned parallel to each other and parallel to the inner edges of the first wall.

These outer edges of the second wall, which border or delimit the cambered area on opposite sides of the cambered area, may be received in a form-fitting manner in the inner edges of the first wall or in the region of the inner edges of the first wall, which cover the planar section of the first wall on opposite sides of the flat section. Thus, a pressure exerted by an overpressure in the storage or guide volume on the cambered portion of the second wall compressive force while maintaining the crown on the outer edges of the second wall and on the inner edges of the first wall in the first wall be introduced. Again, the compressive force exerted on the cambered portion in this arrangement can be introduced into the first wall such that the compressive force causes only an effective tension within and along the surface of the planar portion without appreciably deforming the planar portion or first wall becomes.

As previously described, the outer edges of the second wall and the inner edges The first wall in this case, not necessarily be in direct contact. For example, it is conceivable that in each case a spacer is arranged in the region of the inner edges of the first wall between the first and the second wall. Thus, a compressive force exerted on the cambered section by an overpressure in the storage or guide volume can also be introduced into the first wall via the spacer or the spacers.

Preferably, the cambered portion between the two outer edges, each delimiting or delimiting the cambered portion at opposite sides of the cambered portion, respectively, is continuously curved toward the storage or guide volume. In this case, a compressive force exerted on the cambered portion by an overpressure in the storage volume is typically only along the outer edge of the second wall which surrounds the cambered portion and only over the inner edge of the first wall bounding or enclosing the planar portion of the first wall Wall in which the outer edges of the second wall are received, introduced into the first wall. Again, the compressive force exerted on the cambered portion may then be introduced into the first wall such that the compressive force causes only a tensile stress effective within and along the surface of the planar portion without appreciably deforming the planar portion or first wall thereby. A component of the compressive force oriented perpendicularly to the planar surface plane of the planar section is therefore introduced into the first wall only in the edge region of the planar section or only along the inner edges of the first wall in this case. Thus, it is avoided that the flat portion is bulged due to the pressing force perpendicular to the plane plane of the flat portion.

The first wall may have a plurality of planar sections. In this case, each two adjacent planar sections may be joined together on an inner side of the first wall facing the second wall along an inner edge of the first wall or merge into one another and enclose an angle along this inner edge and be angled relative to one another towards the second wall. Typically, the inner edges of the first wall or at least some of them are aligned parallel to each other.

In addition, the second wall may have a plurality of cambered portions, which are each arched to the volume. In this case, each two adjacent cambered portions may be joined together on an outer side of the second wall facing the first wall along an outer edge of the second wall or merge into one another. Each of the cambered portions of the second wall is thus usually bordered on two opposite sides by an outer edge of the second wall or limited or at least partially limited. Preferably, the cambered portions between the outer edges of the second wall, from which they are bounded, each arched through to the enclosed by the second wall storage or Leitvolumen out.

The outer edges of the second wall or at least some of them are typically aligned parallel to each other. Usually, the inner edges of the first wall are aligned in particular parallel to the outer edges of the second wall.

The outer edges of the second wall bordering or embossing the cambered sections can then also be received in each case in a form-fitting manner in one of the inner edges of the first wall or in the region of one of the inner edges of the first wall. As described above, even with such an arrangement, pressure forces exerted on the cambered portions of the second wall by an overpressure in the storage or guide volume can be introduced into the first wall in such a way that the compressive forces cause only an effective tension within and along the surfaces of the planar portions without noticeably deforming the first wall. In particular, it is avoided that the flat portions are bulged perpendicular to their respective plane plane.

The first wall may have a plurality of mutually joined or merging into each other flat portions which are arranged such that the first wall forms a polygon in cross-section, preferably a regular polygon. The cross section is thereby preferably determined along a sectional plane which is aligned perpendicular to the planar sections of the first wall. In the case of the pressure line, the planar portions of the first wall are preferably arranged such that their plane planes are aligned parallel to the flow direction of the fluid through the pressure line.

The second wall may be formed in each case double-walled at least in the cambered portion or in the cambered portions. The second wall then has, in the cambered section, an inner wall facing the storage or guide volume and an outer wall facing the first wall. It can then be cambered both the inner wall and the outer wall of the cambered portion and arched in each case to the volume enclosed by the second wall be. Alternatively, in the double-walled embodiment of the cambered portion only the storage or guide volume facing inner wall of the second wall cambered and curved towards the volume, while the first wall facing the outer wall is flat and z. B. over its entire surface or at least partially approaches the first wall. The double-walled design of the second wall can, for. B. the thermal insulation of the fluid and / or the mechanical stabilization of the cambered portion be beneficial.

In the double-walled embodiment of the cambered portion or the cambered portions, the inner wall and the outer wall of the second wall may include a cavity. This cavity may be filled with a filling material, preferably completely. The filling material may additionally serve for the thermal insulation of the fluid and / or the mechanical stabilization of the inner wall of the cambered portion. The filling material may comprise a foamed material, e.g. As an aluminum-containing foam or a foamed plastic.

For mechanical stabilization of the cambered portion, the second wall may be supported in the cambered portion on one of the first wall facing the outside of the second wall by one or more stabilizing webs. In this case, the stabilizing webs preferably extend along a direction of a maximum curvature of the cambered section, since the material of the second wall is usually subjected to the greatest stress along this direction. Alternatively or additionally, the stabilizing webs may also extend along other directions. For example, the stabilizing webs may form a honeycomb-like structure. Usually, the stabilizing webs are aligned perpendicular to the planar surface plane of the respective planar portion of the first wall, in the region of which they are arranged to stabilize the cambered portion.

Additionally or alternatively, one or more beads in the second wall may be formed in the cambered portion to increase the rigidity of the camber. These beads then preferably extend along a direction of maximum curvature of the cambered portion.

Additionally or alternatively, the cambered portion or the cambered portions of the second wall at one of the memory or

Guide volume facing the inside of the second wall to stabilize the crowning each be supported by one or more webs, or reach through the memory or guide volume. For example, each two cambered sections may be interconnected by such a bridge.

Specific embodiments of the proposed pressure vessel and the proposed pressure line are shown in the figures and will be explained in more detail with reference to the following description. It shows:

1 a pressure vessel according to the invention in a sectional view;

2 an embodiment of a side wall portion of a pressure vessel according to the invention in a sectional view;

3 a perspective top view of the side wall part 2 ;

4 a side wall portion of the pressure vessel 1 in a sectional view with indicated power flow directions;

5 a further embodiment of a side wall portion of a pressure vessel according to the invention in a sectional view;

6 a perspective top view of the side wall part 5 ;

7 a further embodiment of a side wall portion of a pressure vessel according to the invention in a sectional view with a web for stabilizing the side wall portion;

8th a further embodiment of a pressure vessel according to the invention in a sectional view with webs according to 7 ;

9 a further embodiment of a side wall portion of a pressure vessel according to the invention in a sectional view with a web for stabilizing the side wall portion;

10 a perspective top view of the side wall part 9 ;

11 a further embodiment of a side wall portion of a pressure vessel according to the invention in a sectional view with a bead for stabilizing the side wall portion;

12 a perspective top view of the side wall part 11 ;

13 a further embodiment of a pressure vessel according to the invention in a sectional view; and

14 a further embodiment of a pressure vessel according to the invention in a sectional view.

1 shows a pressure vessel according to the invention 100 in cross-section, wherein the cross-sectional plane is an xy-plane passing through an x-axis 18 and a y-axis 19 is spanned. The x-axis 18 , the y-axis 19 and a z-axis 20 put up a right-handed Cartesian coordinate system.

The pressure vessel 100 includes a first wall 1 with a plurality of flat sections 1a , In the xy plane shown here has the first wall 1 a square cross section. In alternative embodiments, the container may have a different cross section, e.g. B. another polygonal cross-section. Along the z-direction 20 should be the xy-section of the container 100 be constant. Two opposing flat sections 1a are therefore aligned parallel to each other. There are two of the flat sections 1a aligned parallel to the xz plane, and the remaining two of the planar sections 1a are aligned parallel to the yz plane. The flat sections 1a the first wall 1 here each have a rectangular shape.

The flat sections 1a rich in edges 15 the first wall 1 each adjacent to each other and touch each other along the edges 15 , The edges 15 each run in a straight line along the z-direction 20 , ie perpendicular to the plane of the 1 , Here are the flat sections 1a formed as separate panels along the edges 15 are joined together.

For example, it is the flat sections 1a around metal plates that run along the edges 15 welded together. Likewise, it is conceivable that the first wall 1 is formed in one piece and along the edges 15 for the formation of the flat sections 1a is deformed. In alternative embodiments, the first wall 1 be formed of a different material, for. B. plastic.

Not explicitly shown here are two more planar sections 1a the wall 1 that the container 100 each along the z-direction 20 complete, leaving the first wall 1 a storage volume 21 completely encloses to store a fluid in all directions. For example, the wall can 1 have a cubic shape. Preferably, the wall is 1 designed such that it the storage volume 21 Media-tight encloses. The fluid may, for. As a gas, a liquefied gas or a liquid. The container 100 may be configured such that it can store a fluid at a pressure of at least 10 bar or at least 100 bar, without the container 100 undergoes a noticeable deformation. For introducing the fluid into the storage volume 21 and for discharging the fluid from the storage volume 21 can the container 100 have one or more valves (not shown) via which optionally a fluid connection between the storage volume 21 and an exterior of the container 100 can be produced. Alternatively or additionally, the container 100 have on at least one side a media-tight sealable lid.

The first wall 1 encloses a second wall 2 , The second wall 2 is thus within the first wall 1 arranged. The second wall 2 in turn encloses the storage volume 21 media-tight in all spatial directions. The second wall 2 Thus, in turn, forms a sealed inner container which is within the first wall 1 formed outer container is formed and the storage volume 21 Media-tight encloses or encloses. The second wall 2 includes a plurality of cambered portions 2a , each to the storage volume 21 are arched out. Each of the domed sections 2a the second wall 2 is in each case in the range of one of the flat sections 1a the first wall 1 arranged. Together, the flat sections form 1a with the cambered sections associated with them 2a each side wall parts of the pressure vessel 100 ,

For example, the domed sections 2a shaped in each case in the manner of a cylinder jacket section and to the storage volume 21 arched (see eg 3 . 6 . 10 and 12 ). In alternative embodiments, the cambered portions 2a otherwise arched towards the storage volume. For example, the crown may also be parabolic or hyperbolic. Likewise, in alternative embodiments, the crown may not only be arched in the xy plane, as in the present embodiment. In addition, the crown may also be curved in a plane that is perpendicular to the xy plane, z. In the xz plane. For example, the curvature may be at least partially spherical.

Here and below, only one pressure vessel will be explicitly described for the sake of simplicity. However, a person skilled in the art will be immediately aware that the proposed pressure line can be designed in a very analogous manner as the pressure vessel 100 , Such a pressure line differs from the pressure vessel 100 z. B. only in that they like a tube with square or otherwise polygonal cross-section along the z-direction 20 each is open, leaving a fluid along the z-direction 20 in the guide volume 21 is guided and the pressure line along the z-direction 20 can flow through.

The domed sections 2a of the pressure vessel 100 out 1 rich in edges 22 the first wall 2 each adjacent to each other and touch each other along the edges 22 , The edges 22 each run in a straight line along the z-direction 20 , Here are the domed sections 2a formed as separate panels along the edges 22 are joined together. For example, the domed sections are domed metal plates along the edges 22 welded together. Likewise, it is conceivable that the second wall 2 is formed in one piece and along the edges 22 for the formation of the domed sections 2a is deformed. In alternative embodiments, the second wall may be formed of a different material, e.g. B. plastic.

On one of the second wall 2 facing inside 23 the first wall 1 is through each of the edges 15 the first wall 1 one inner edge each 15a formed (the associated reference numerals 15a are in 1 just for the sake of clarity outside the first wall 1 shown). The inner edges 15a the first wall 1 each run along the z-direction 20 , The inner edges 15a form on the inside 23 the first wall 1 each one edge region of the planar sections 1a , Each of the flat sections 1a becomes laterally through two of the inner edges 15a limited, the two have the same flat section 1a bounding inner edges 15a each on two opposite sides of this section 1a are arranged. The two same flat section 1a bounding inner edges 15a are each aligned parallel to each other. Along each of the inner edges 15a are each two level sections 1a the first wall 1 that face each other at this inner edge 15a touch or the at this inner edge 15a merge into each other, relative to each other to the second wall 2 bent down. In 1 close the flat sections 1a the first wall 1 on the inside 23 the first wall 1 in the area of the inner edges 15a each an angle of 90 degrees.

On one of the first wall 1 facing outside 24 the second wall 2 form the edges 22 the second wall 2 one outer edge each 22a , The outer edges 22a the second wall 2 each run along the z-direction 20 , The outer edges 22a each form an edge region of the domed sections 2a , Each of the domed sections 2a will be on the outside 24 the second wall 2 laterally through two of the outer edges 22a limited, the two have the same domed section 2a limiting outer edges 22a each on two opposite sides of this domed section 2a are arranged. The two same domed section 2a limiting outer edges 22a are each aligned parallel to each other.

In the embodiment of 1 is each of the outer edges 22a the second wall 2 each form-fitting in one of the inner edges 15a or in the area of one of the inner edges 15a the first wall 1 added. Here are the first wall 1 and the second wall 2 along the inner edges 15a the first wall 1 and along the outer edges 22a the second wall 2 additionally joined together. For example, the first wall 1 and the second wall 2 along the inner edges 15a the first wall 1 and along the outer edges 22a the second wall 2 each welded together, soldered, glued, bolted, riveted or the like.

In addition, the domed sections 2a between the two outer edges 22a that the respective domed section 2a on opposite sides of this cambered portion 2a limit, always to the storage volume 21 arched out. The domed sections 2a So only in the range of the outer edges 22a to the first wall 1 approach. This has the consequence that one by an overpressure of the in the storage volume 21 stored fluid on the cambered sections 2a exerted pressure force 25 in each case only or substantially only over the outer edges 22a the second wall 2 and only in the area of the inner edges 15a the first wall 1 in the first wall 1 can be introduced. The pressure force 25 is by this arrangement in the first wall 1 initiated that the compressive force 25 in the flat sections 1a the first wall 1 only one within and along the surface of the respective planar section 1a effective tension 26 causes. There is thus no deformation of the flat sections 1a perpendicular to the plane plane of the respective planar section 1a ,

2 shows a modified embodiment of a side wall portion of the pressure vessel 100 out 1 in a sectional view along the xy plane. Here and below are recurring features in each case provided with the same reference numerals. The illustrated side wall part again comprises a flat section 1a the first wall 1 and one in the area of the flat section 1a arranged domed section 2a the second wall 2 , The side wall part according to 2 differs from the sidewall parts according to 1 in that the second wall 2 in the area of the domed section 2a at least partially double-walled running with a storage volume 21 facing domed inner wall 3a and one of the first wall 1 facing outer wall 3b who is trained here.

The inner wall 3a and the outer wall 3b are along two joints 5 put together along the z-direction 20 run. For example, the inner wall 3a and the outer wall 3b along the joints 5 welded, soldered or glued. The inner wall 3a and the outer wall 3b include a cavity that is completely filled with a filler material 4 is filled. The filling material 4 comprises a foamed material, e.g. B. a foamed plastic. The filling material serves for improved thermal insulation of the storage volume 21 stored fluid and the mechanical stabilization, especially the domed inner wall 3a , The flat surface plane of the flat outer wall 3b is parallel to the plane plane of the flat section 1a the first wall 1 aligned. The outer wall 3b is not enough for the flat section 1a the first wall 1 approach, but is spaced from this. 3 shows a perspective top view of the side wall part 2 ,

4 shows an xy cross section of one of the side wall parts of the pressure vessel 100 out 1 with marked power flow lines. Shown is in particular the by an overpressure in the storage volume 21 on the domed section 2a the second wall 2 exerted pressure force 25 , In addition, the inside and along the plane plane of the flat section 1a the first wall 1 effective tension 26 represented by the initiation of the compressive force 25 in the first wall 1 in the area of the edges 15 the first wall is caused. It is clearly recognizable that the pressure force 25 only in the area of the edges 15 the first wall 1 , ie in the edge area of the flat section 1a in the first wall 1 is initiated. Inside the flat section 1a So in one of the by the edges 15 given edge region of the flat section 1a different area of the flat section 1a , acts perpendicular to the flat plane of the flat section 1a no component of the pressure force 25 on the flat section 1a , This will be a bulging of the flat section 1a perpendicular to the planar plane of the flat section 1a due to the pressure force 25 avoided.

5 shows a further modification of the side wall part 2 again in a sectional view along the xy plane. Again, the second wall 2 in the area of the domed section 2a double-walled with an inner wall 3a and an outer wall 3b , In contrast to the embodiment of 2 are in 3 however, both the storage volume 21 facing inner wall 3a as well as the first wall 1 facing outer wall 3b cambered. Again, that's from the inside wall 3a and the outer wall 3b completely enclosed cavity with the filling material 4 completed. The inner wall 3a and the outer wall 3b each extend along the entire length of the planar section 1a along the x-direction 18 , The inner wall 3a and the outer wall 3b are along the x-direction 18 each continuous to the volume 21 arched out. The inner wall 3a and the outer wall 3b the second wall 2 each extend only in the edge region of the planar section 1a passing through the plane section 1a laterally delimiting edges 15 is given to the first wall 1 approach. 6 shows a perspective top view of the side wall part 5 ,

7 again shows a side wall portion of a pressure vessel according to the invention with a flat portion 1a the first wall 1 and one in the area of the flat section 1a arranged domed section 2a the second wall 2 , In a central area of the domed section 2a in which the domed section 2a has a maximum curvature is at one of the storage volume 21 facing side of the second wall 2 at a connection point 8th a footbridge 7 attached, the mechanical stabilization of the domed section 2a serves.

8th shows an xy cross-section of another embodiment of the pressure vessel 100 out 1 wherein two opposing cambered portions 2a the second wall 2 each by a bridge 7 are connected. The bridges 7 are each at a connection point 8th with the domed sections 2a connected and form a connecting cross. The bridges 7 grab it by the storage volume 21 therethrough.

9 shows a further embodiment of a side wall portion of a pressure vessel according to the invention with a flat portion 1a the first wall 1 and one in the area of the flat section 1a arranged domed section 2a the second wall 2 , In the area of the domed section 2a has the side wall element at the first wall 1 facing outside 24 the second wall for stabilizing the cambered portion 2a a stabilization bar 9 up here along the x-direction 18 extends. Along the x-direction 18 indicates the cambered area 2a a maximum curvature. The jetty 9 is perpendicular to the plane plane of the flat section 1a aligned. To the domed section 2a there is the jetty 9 according to the domed section 2a arched and sufficient for mechanical support of the domed section 2a continuous to the outside 24 of the domed section 2a approach. To the flat section 1a there is the jetty 9 also flat or straight. That the flat section 1a facing straight end of the dock 9 is parallel to the flat section 1a aligned and spaced from this. 10 shows a perspective top view of the side wall part 9 with a plurality of stabilizing bars 9 which are aligned parallel to each other and each along the x-direction 18 extend. In alternative embodiments, on the outside 24 of the domed section 2a Stabilizing webs may be provided, which are arranged in a different manner than the webs 9 according to the 9 and 10 , For example, stabilizing webs may be provided with a honeycomb structure. The side walls of these honeycombs formed by the webs are then preferably like the webs 9 each perpendicular to the plane plane of the planar section 1a aligned.

11 shows a further embodiment of a side wall portion of a pressure vessel according to the invention with a flat portion 1a the first wall 1 and one in the area of the flat section 1a arranged domed section 2a the second wall 2 , In the domed section 2a is a bead to increase the stiffness of the crown 12 in the second wall 2 formed here along the x-direction 18 extends, in which the curvature of the domed section 2a is maximum. 12 shows a perspective top view of the side wall part 11 with a plurality of beads 12 in the second wall, with the beads 12 are aligned parallel to each other and each along the x-direction 18 extend.

13 shows an xy cross section of another embodiment of a pressure vessel according to the invention 200 , Shown again are the first wall 1 with flat sections 1a and the second wall 2 with cambered sections 2a , From the pressure vessel 100 according to 1 differs the pressure vessel 200 according to 13 in that between the first wall 1 and the second wall 2 in the area of the inner edges 15a the first wall 1 spacers 16 are arranged. The outer edges 22a the second wall 2 are only about the spacers 16 in operative connection with the first wall 1 , In this way, the on the cambered sections 22a exerted pressure force 25 only over the outer edges 22a the second wall 2 , about the spacers 16 and only over the inner edges 15a in the first wall 1 initiated. On the inside 23 the first wall is between the spacers 16 one insulation each 17 arranged, the thickness of each of the thickness of the spacers 16 equivalent.

Finally shows 14 a further embodiment of a pressure vessel according to the invention 14 , This differs from the pressure vessel according to 1 in that the first wall 1 is formed in the xy-cross section as a regular triangle. The first wall 1 thus has only three planar sections in the xy cross section 1a on, each other at the edges 15 touch the first wall. Accordingly, the second wall 2 in xy cross-section only three domed sections 2a on.

One skilled in the art will immediately appreciate that the features of the containers 100 . 200 . 300 shown embodiments of the 2 - 14 quite analogously to corresponding embodiments of the proposed pressure line are transferable. The pressure pipe differs from the tanks 100 . 200 . 300 then z. B. in each case only in that the pressure line in the manner of a tube in each case along the z-direction 20 is open.

Claims (15)

Pressure vessel ( 100 ; 200 ; 300 ) for storing a fluid or pressure line for conducting a fluid, comprising a first wall ( 1 ) and one of the first wall ( 1 ) enclosed second wall ( 2 ); the second wall ( 2 ) a volume ( 21 ) encloses for storing or for conducting the fluid; the first wall ( 1 ) at least one flat section ( 1a ) having; and wherein the second wall ( 2 ) in the area of the planar section ( 1a ) of the first wall ( 1 ) at least one domed section ( 2a ) facing the second wall ( 2 ) enclosed volume ( 21 ) is arched. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to claim 1, wherein the cambered portion of the second wall ( 2 ) and the planar section ( 1a ) of the first wall ( 1 ) are designed and arranged so that one by an overpressure in the volume ( 21 ) on the domed section ( 2a ) of the second wall ( 2 ) applied compressive force ( 25 ) while maintaining the crowning only over an edge region of the domed section ( 2a ) of the second wall ( 2 ) and only over an edge region of the planar section ( 1a ) of the first wall ( 1 ) in the first wall ( 1 ) can be introduced. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to claim 1 or 2, wherein the first wall ( 1 ) on one of the second wall ( 2 ) facing inside ( 23 ) of the first wall ( 1 ) at least one inner edge ( 15a ), wherein the first wall ( 1 ) along the inner edge ( 15a ) to the second wall ( 2 ) and wherein the inner edge ( 15a ) of the first wall ( 1 ) the flat section ( 1a ) of the first wall ( 1 ) limited or at least partially limited; the second wall ( 2 ) on one of the first wall ( 1 ) facing outside ( 24 ) of the second wall ( 2 ) an outer edge ( 22a ) or has, wherein the outer edge ( 22a ) of the second wall ( 2 ) the domed section ( 2a ) of the second wall ( 2 ) limited or at least partially limited; and wherein the outer edge ( 22a ) of the second wall ( 2 ) positively in the inner edge ( 15a ) of the first wall ( 1 ), so that one by an overpressure in volume ( 21 ) on the domed section ( 2a ) of the second wall ( 2 ) applied compressive force ( 25 ) while maintaining the crown over the outer edge ( 22a ) of the second wall ( 2 ) and over the inner edge ( 15a ) of the first wall ( 1 ) in the first wall ( 1 ) can be introduced. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the first wall ( 1 ) on one of the second wall ( 2 ) facing inside ( 23 ) of the first wall ( 1 ) two inner edges ( 15a ), wherein the inner edges ( 15a ) the flat section ( 1a ) of the first wall ( 1 ) on opposite sides of the planar section ( 1a ) in each case limit or at least partially limit and wherein the first wall ( 1 ) along the inner edges ( 15a ) each to the second wall ( 2 ) is angled; the second wall ( 2 ) on one of the first wall ( 1 ) facing outside ( 24 ) of the second wall ( 2 ) two outer edges ( 22a ), wherein the outer edges ( 22a ) the domed section ( 2a ) of the second wall ( 2 ) on opposite sides of the domed section ( 2a ) limit or at least partially limit; and wherein the outer edges ( 22a ) of the second wall ( 2 ) in the inner edges ( 15a ) of the first wall ( 1 ), so that one by an overpressure in the volume on the cambered portion ( 2a ) of the second wall ( 2 ) applied compressive force ( 25 ) while maintaining the crown over the outer edges ( 22a ) of the second wall ( 2 ) and over the inner edges ( 15a ) of the first wall ( 1 ) in the first wall ( 1 ) can be introduced. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to claim 4, wherein the cambered portion ( 2a ) between the two outer edges ( 22a ), which the domed section ( 2a ) on opposite sides of the cambered portion ( 2a ), or limit them at least in regions, to the volume ( 21 ) is arched. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the first wall ( 1 ) a plurality of planar sections ( 1a ), wherein each two adjacent planar sections ( 1a ) of the first wall ( 1 ) on one of the second wall ( 2 ) facing inside ( 23 ) of the first wall ( 1 ) along an inner edge ( 15a ) of the first wall ( 1 ) are joined together or merge into one another and along this inner edge ( 15a ) enclose an angle and to the second wall ( 2 ) are angled; the second wall ( 2 ) a plurality of domed sections ( 2a ), each to the volume ( 21 ) are curved, each two adjacent cambered portions ( 2a ) on one of the first wall ( 1 ) facing outside ( 24 ) of the second wall ( 2 ) along an outer edge ( 22a ) of the second wall ( 2 ) are joined together or merge; and wherein the outer edges ( 22a ) of the second wall ( 2 ) in each case form-fitting in one of the inner edges ( 15a ) of the first wall ( 1 ) are included. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the first wall ( 1 ) a plurality of mutually joined or merging planar sections ( 1a ), which are arranged such that the first wall ( 1 ) forms a polygon in cross section, preferably a regular polygon, the cross section being determined along a sectional plane perpendicular to the planar sections ( 1a ) of the first wall ( 1 ) is aligned. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the second wall ( 2 ) along an edge region of the domed section ( 2a ) completely or at least partially with the first wall ( 1 ) is joined together. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the second wall ( 2 ) at least in the domed section ( 2a ) is double-walled and a volume-facing inner wall ( 3a ) and one of the first wall ( 1 ) facing outer wall ( 3b ) having. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to claim 9, wherein in the domed section ( 2a ) of the second wall ( 2 ) both the inner wall ( 3a ) as well as the outer wall ( 3b ) of the second wall ( 2 ) are cambered and each from the second wall ( 2 ) enclosed volume ( 21 ) are arched out. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to claim 9, wherein in the domed section ( 2a ) of the second wall ( 2 ) the volume ( 21 ) facing inner wall ( 3a ) of the second wall ( 2 ) and the volume ( 21 ) is curved and where in the domed section ( 2a ) of the second wall ( 2 ) of the first wall ( 1 ) facing outer wall ( 3b ) of the second wall ( 2 ) at least partially to the first wall ( 1 ), preferably along the entire outer wall ( 3b ). Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of claims 9 to 11, wherein one of the inner wall ( 3a ) and the outer wall ( 3b ) of the second wall ( 2 ) completely enclosed cavity with a filling material ( 4 ) is filled, preferably completely filled. Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the second wall ( 2 ) in the domed section ( 2a ) on one of the first wall ( 1 ) facing outside ( 24 ) of the second wall ( 2 ) by one or more stabilizing webs ( 9 ), whereby the stabilizing webs ( 9 ) preferably along a direction of maximum curvature of the cambered portion (FIG. 2a ). Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein in the domed section ( 2a ) of the second wall ( 2 ) to increase the rigidity of the crowning one or more beads ( 12 ) in the second wall ( 2 ) are formed, wherein the beads ( 12 ) preferably along a direction of maximum curvature of the cambered portion (FIG. 2a ). Pressure vessel ( 100 ; 200 ; 300 ) or pressure line according to one of the preceding claims, wherein the second wall ( 2 ) at least two volume-facing cambered portions ( 2a ), each to the volume ( 21 ) are curved, the domed sections ( 2a ) for stabilizing the crowns by one or more by volume ( 21 ) passing through webs ( 7 ) are interconnected.

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