DE8300882U1 - pressure vessel - Google Patents

Description

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III 111

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pressure vessel

The innovation relates to a pressure vessel consisting of at least two interconnected container parts, which are provided with a protective lining on the inside.

In particular, the innovation relates to the connection of these two container parts. This connection can namely cannot be brought about by welding, that this too damage to the inner, protective lining of the container parts, thereby reducing the usefulness and The service life of the container would be severely impaired.

The innovation aims to create a pressure vessel in which the container parts are only mechanically connected to one another are without the protective, inner lining of the container parts attacked or damaged, but a reliable and pressure-resistant connection is achieved.

The solution to this problem is a pressure vessel of the type described in the introduction according to the invention in such a way that the container parts are bent outward at their edges to be connected to each other by about 180 °, that in the area of the connection an inner overlapping sleeve is arranged in the container that a ring is made between the bent edges elastic material is arranged, and that at least one, essentially C-shaped ver j Binding element engages with a body part and with end edges bent over approximately 180 °, the body part with a!

i is provided inwardly directed fold, which is provided by axial J

Compression of the connecting element during assembly ' is generated. '

Due to the inwardly directed fold in the connecting element or in the body part of this connecting element, the gripping bent edges or end edges on the container parts as well as on the connecting element stably and firmly against each other pressed, whereby the cold deformation of the connecting element simultaneously increases the hardness in the material this connecting element (increase in the hardness of the material by cold deformation) occurs and this increase in hardness dem Connection element gives additional stability. The substantially C-shaped connecting element can consist of a exist single annular element, which extends over the entire circumference or almost over the entire circumference of the pressure vessel extends, or it can consist of several parts, each of which has a certain arc length of the circumferential line of the Pressure vessel at the connection point, preferably covers an arc length of at least 30 °.

Preferably, the inner overlap sleeve is provided with a radially outwardly directed bead which has a stop for forms the two bent edges of the container parts. In this way, the overlap sleeve is fixed inside the container and the two container parts can easily be pushed from the bead onto the overlapping sleeve on both sides. It is then it is not necessary to fix the overlap sleeve, for example by spot welding, so that it is then separated can be provided with a protective cladding or with a protective covering.

The innovation is explained in more detail below with reference to the figures.

Show it:

1 shows in cross section a pressure vessel according to the innovation;

FIG. 2 shows, in an enlarged representation, the connection between the two container parts of the container according to FIG. 1;

FIG. 3 shows a representation similar to FIG. 2, but in one

previous work phase during the connection or during the assembly of the two container parts to one another.

In the exemplary embodiment shown in the figures, the pressure vessel consists of two cylindrical vessel parts 1 and 2, which are made, for example, by welding or deep drawing and of which the container part 1 is welded connection pieces 3 has. The container parts 1 and 2 are both on the inside and on the outside with a protective Cladding or layer, for example provided with a layer of lacquer which is at least 30 ″ thick, and which is applied, for example, by a dipping process. Such pressure vessels are used, for example, as air pressure vessels for Brake systems used by trucks and have a capacity of 20 - 40 liters. The work pressure that such a Is exposed to pressure vessel, is usually 8.5 bar, so that the two container parts 1 and 2 to each other connect are that this connection can withstand a high pressure and when the connection is established, the protective inner lacquer layer is not attacked.

For this purpose, an inner overlap sleeve 4 is provided in the interior of the pressure vessel at the connection point, which one Has bead 5 protruding radially outward. The edges of the container parts 1 and 2 to be connected are over approx. 180 ° bent. The container parts are on both sides of the overlap sleeve 4 pushed on, the bent edges of the Container parts 1 and 2 rest against the bead 5. The bent edges of the container parts 1 and 2 are connected by a connecting element 6, which is essentially C-shaped and has end edges bent inwardly over approximately 180 ° 7 and 8 is provided and a body or base part 9 has. The body part 9 has an inwardly directed Provided fold 10, which is generated by the fact that the connecting element 6 is axially compressed during the assembly of the container parts 1 and 2, as shown later with reference to FIG

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is explained. The connecting element 6 can consist of one extending over the entire circumference of the pressure vessel annular band or consist of several parts, each part covering a portion of the container circumference. A ring 11 made of elastic material is arranged between the opposite edges of the container parts 1 and 2, which is enclosed between the fold 10 and the bead 5 in the radial direction of the pressure vessel. This ring consists for example of rubber, preferably of butyl rubber.

In the figure 3 is a phase during the assembly of the connecting element 6 shown. The two container parts 1 and 2 are pushed onto the overlap sleeve 4 on both sides of the bead 5, the ring 11 being arranged between the bent edges of the container parts 1 and 2. Both container parts 1 and 2 are pressed against the bead 5, so that the connecting element 6 with its bent end edges 7 and 8 can be pushed over the bent edges of the container parts 1 and 2. With the subsequent release or release of the Container parts 1 and 2 these are pushed apart again by the elastic action of the ring 11, the bent over Rims of the container parts 1 and 2 engage in the bent end edges 7 and 8 of the connecting element 6, as shown in FIG Figure 3 is shown. An annular auxiliary tool 12 is then placed around the connecting element 6, which fits exactly around the connecting element 6. Thereafter, the bent end edges 7 and 8 of the connecting element 6 exerted an axial compressive force in the direction of the two arrows P. This compressive force is such that the bent edges of the container parts 1 and 2 come to rest against the bead 5 and the body or base part 9 of the connecting element 6 buckles inwards, so that the fold 10 shown in FIG. 2 is produced. The auxiliary tool 12 is then removed, whereby the Connection between the container parts 1 and 2 has come about.

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The cold deformation of the body or base part 9 occurs a hardening of the material (increase in hardness by cold deformation), whereby a particularly high strength for the Connection is achieved. The inward kinking of the base part also means that this part is exposed to smaller tensile forces is. The ring 11 made of elastic material is therefore very firmly enclosed by the fold 10, the bent edges the container parts 1 and 2 and the bead 5, so that a good seal of the connection is guaranteed and even at higher Press no leakage occurs.

The connection shown is exclusively of a mechanical nature, so no welding or welding operations are necessary that could attack the inner lining or lead to the formation of corrosion. The fact, the fact that no welding is necessary also means that the container parts are made of weaker material can be. When welding, an additional corrosion allowance of approximately 1 mm must be assumed. The connection according to the innovation therefore means an additional weight saving of approx. 30%, which is especially true today in the Automotive industry is particularly important. For the container parts 1 and 2, a wall thickness of 1.7 mm is sufficient, the wall thickness of the connecting element 6 should be at least 2 mm. It turns out that the pressure vessel according to the innovation even is particularly dimensionally stable when using these relatively thin materials.

Although the connection described here is applied to a pressure vessel for cerebral air, it is clear to a person skilled in the art that this connection can also be used for pipes and the like, and always when a mechanically stable and pressure-resistant connection without welding is desired.

Claims (2)

ι ι t) t III 1 Real protection claims Pressure vessel consisting of at least two interconnected container parts, which inside with a protective Covering provided sir, d, characterized in that the container parts (1, 2) to be connected to one another Edges are bent outwards by approx. 180, so that an inner overlap sleeve is in the area of the connection (4) is arranged in the container that a ring (11) made of elastic material between the bent edges is arranged, and that over the bent edges at least one, essentially C-shaped connecting element (6) with a body part (9) and bent over about 180 ° End edges (7, 8) engages, the body part (9) being provided with an inwardly directed fold (10) which passes through axial compression of the connecting element (6) generated during assembly; is.. 2. Pressure vessel according to claim 1, characterized in that the inner overlap sleeve (4) with one to the outside directed bead (5) is provided, which has a stop for the two bent edges of the container parts (1, 2) forms.