DE2129133A1 - Detachable flange connection - Google Patents

Description

The invention relates to a releasable flange connection optimal sealing properties, especially for high vacuum pipelines suitable is.

The sealing properties of the flange connection according to the invention are based primarily on the fact that at least one plastically deformable packing and at least one elastic deformable packing one behind the other in the direction of the pressure drop are arranged over the surface to be sealed.

The term "high vacuum pipelines" in this context includes also waveguides and cables, e.g. waveguides for conducting electromagnetic vibrations and cables Electrical energy management *

The material used for the plastic packing can be lead, for example. However, other ca-

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materials with comparable properties are used for this purpose.

For the sake of brevity, in this context only to be referred to lead "

Because of the measures mentioned above, it is now possible have become to use lead packings as sealing devices. This is due to the fact that it is necessary to seal well with blanks it is essential to precisely maintain the correct degree of compression and plastic deformation of the lead. This Of course, lead only needs to be compressed slightly in order to achieve the deformation required for sealing. Therefore, the compression distance is small for this purpose. By doing the compression distance of the elastic jaw is equal to the compression distance is dimensioned for the plastic packing, it can be achieved that both packs to form at the same time be depressed by a seal.

The flange connection is preferably carried out so that the elastic, deformable packing comprises at least one conical or approximately conical Hing, which at its respective opposite Hands in projecting hands of the parts of the ! Flange connections that are to be connected to each other, is included "

A packing ring of this type can, for example, consist of a thin Hung can be made from soft aluminum. The compression can be done particularly effectively in two stages.

The second stage of this compression is an aluminum ring this kind folded as ea shown in cross section so that one of the sealing edges comes to lie opposite the gap to be sealed

JTir a good functioning of the seal, it is desirable

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that the elastic, deformable packing over a deformation allows a greater distance than the plastic packing.

In many! Cases it is advantageous if the assembly and separation of the flange connection of the type described with little or no displacement of the parts of the pipeline to be connected or disconnected with respect to one another can be carried out in the direction of the pipeline.

For this reason, according to the invention, those which can be molded are plastic Pack and the elastically deformable pack approximately the same surface area of the splash joint so that when the ropes of the joint are in engagement with each other be brought, only a small or practically no displacement of the interacting parts in the direction of the pipeline are required.

In particular, when each elastically deformable pack is arranged around the plastically deformable pack in such a way that the elastically deformable pack from the outside for the purpose of removal is accessible with a tool that the elastically deformable pack can be divided into two parts, the advantage achieved that no shift in the direction of the pipeline for the purpose of separation is necessary. The conical packing ring can be cut through with a cutting or sawing tool or sawed through, whereupon it is also possible to move the connected flanges in the transverse direction.

A shift in the direction of the pipeline for the purpose of Assembling or separating can also be reduced by the fact that not just one packing ring, but a number of. concentric rings are used, each of which has a small dimension in the direction of the pipeline. In this case can have a number of conical rings with the edges after one

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modified embodiment are brought into connection, that the following ring is in the opposite direction.

In the following, “for example,” becomes preferred embodiment the invention explained in more detail with reference to the "accompanying drawing.

Fig. 1 shows a cross section of an inventive

"Splash connection;

Pig. Fig. 2 is a cross-section of a flange connection "in which only a slight displacement of the connection flange parts in the direction of the pipeline is required for the purpose of assembly or separation;

Pig. Figure 5 shows a modification of the Pig compound. 2, which can be achieved with the help of a cutting or sawing tool;

Pig. Figure 4 is an embodiment of the splash joint with multiple packing rings of resilient material;

Pig. Figure 5 is a modification of the Pig splash joint. 4, in which the conical, elastic Paokungrings are in contact with each other with their edges.

Pig. 1 shows an embodiment of a splash connection at the one splash 1 and one splash 2 sealing in opposite one another Position can be brought into connection with one another with the aid of two fastening screws 3 and 4. The one to be sealed Surface which lies between the puddles 1 and 2 is traversed by a pair of pipes 5 and 6. the Outlet "e 7 and 8 of these pipelines and their porting in the Plansch 1 are mainly deformable with the help of a plastic Pack 9 sealed, which is in the space between the bottom of the recessed recess 10 in the puddle 2 and the Surface 11 of the protruding part 12 of the flange 1 included is.

In the case of the plastically deformable Paokung there are passage openings

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provided, which correspond to the paths of the pipelines 5 and 6.

Opposite the underside of the flange 2, an elastically deformable packing 13 is provided, which consists of a conical There is packing ring 14, which with its upper Diohtkante, 15 against the corner point of an annular recess 16 in the tubular protruding part 17 of the flange 2 is pressed. The lower edge 18 of the conical packing ring 14 is pressed into the corner through the cylindrical, outer projection 19 of part 12 and the top 20 of a filling ring 21 is formed, which preferably has an inclined surface corresponding to the recess 16.

Fig. 2 shows a modification of the arrangement of Fig. 1, "where essentially the same reference numerals are used are. In this case, two flanges 1 and 2 are again provided. The figure shows that it is possible to use the elastically deformable packing, which in this case is denoted by 23, to be provided in such a way that it lies very precisely in the same plane as the plastically deformable packing 9.

FIG. 3 illustrates a third embodiment which differs from the embodiment of FIG. 2 in that a ring 24 is provided on the outside of the flange 2 so that that it can be screwed upwards on a thread 25. When the ring 24 is screwed up, the gap 26 is released so that a saw or cutting tool can saw through of the elastically deformable packing ring 27 can be used. After this has been done, the flange 2 be moved horizontally with respect to the flange 1.

Fig. 4 shows a further embodiment modification, wherein between the flanges 1 and 2, which in turn have an outer ring 24, not just one, but three elastically deformable packing rings 28 are provided.

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Pig. Finally, FIG. 5 shows that the packing rings are also provided in the form of elastically deformable packing rings 29 which touch with their edges 50.,

In this embodiment it is still possible to use the rings 29 to rest loosely against each other or to form a packing ring with. Summarize connecting folds.

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Claims (6)

Claims Detachable plan view connection with very good sealing properties, in particular for high vacuum pipelines, characterized in that at least a plastically deformable packing and at least one elastically deformable packing in series in the direction of the Druckabfäles arranged over the surface to be sealed are. 2. Splash connection according to claim 1, characterized in that that the elastically deformable packing comprises at least one conical or approximately conical ring which is attached to its opposite edges in recesses of the parts of the splash connection that are connected to one another should, is included. 3. Splash connection according to claim 1, characterized in that that the elastically deformable packing can be compressed over a greater distance than the plastic one Pack. 4. Splash connection according to claim 1, characterized in that that the plastically deformable packing and the elastically deformable Pack are arranged practically on the same surface of the splash joint, so that when parts of the Connection are brought into engagement with each other, no or only slight displacements of the connected parts in Direction of the pipeline are required. 5. Splash connection according to claim 4, characterized in that ' that each elastically deformable packing around the plastically 109884/1640 deformable package is arranged around so that the
elastically deformable pack is accessible from the outside and can be separated with a tool that can divide the elastically deformable pack into two parts. 6. Flange connection according to claim 2, characterized in that a number of conical rings which are mutually with each other
touch the edges, arranged so that each ring
with the next ring in the opposite direction. 109884/1640