DE2429218A1 - PIPE CONNECTION WITH SEAL - Google Patents

Description

Walter's yeast! Kreuzlingen / TG. (Switzerland)

Pipe connection with seal.

Tüs are known pipe connections with seals that have a chamber form with multi-part walls, which are made with a sealing ring compressible or elastic material is filled, its Volume in the unloaded state "is greater than the volume the chamber when their '-randteile are connected to each other. These known pipe connections have two disadvantages: on the one hand the compression pressure in the axial direction of the pipes is not adjustable and on the other hand they are suitable, even if more provided as a chamber with sealing ring, only for connection of pipes of the same diameter, since in these known pipe connections, even if they have several chambers, these always overlap in the radial direction. . ■

However, in industrial systems in which lines are used that convey media under high pressures, it is desirable both to connect the individual pipes of the lines to one another by means of seals with adjustable contact pressure, and to connect such sealing connections not only to pipes of the same diameter, but also to be able to attach to those with different diameters. '

409882/0409

This object is achieved by the present invention by means of a pipe connection with a seal, which has one or two karaner or earmer filled with a sealing ring, teJ. ie ^ bz-, ί. de ^ en, bic ^ i the tolerances ^ old, the pipes connecting below the inner K & rur. or, form the inner chamber walls and the chamber bzv :. Kaxinern radially outwards by at least one connecting piece surrounding the pipes, is or are and which is characterized in that means are provided which deform the sealing ring of each chamber by axial pressure and thereby rs-en \ the pipe or pipes press.

In the drawing, from which further details emerge, are various embodiments of the pipe connection according to the invention shown for example:

Fig. 1 is a partial axial section through a pipe connection, which connects and seals two pipes of different diameters.

Fig. 2 is a plan view of this pipe joint and

• Fig. 3 a cross section of the same along the line A - A in Fig. I,

Fig. 4 shows a pipe connection in a partial axial section, which is also suitable for two pipes of different diameters, but with the contact pressure of the seal for each pipe Is individually adjustable.

Fig. 5 is, in the same representation, an embodiment for connecting and sealing two tubes of the same diameter.

Figures 6 and 7 finally show in a Axialschnitt- and in a cross section along the line B -. B in Figure 6, nor a white tere embodiment of the pipe joint, the same for tubes diameter is determined..

409882/0409

In Figs. 1 to 3, 1 is the tube of larger diameter, in whose ¹ ^ JnOe the end of the smaller tube 2 is inserted a little way: Lifting the two tubes 1 and 2, a connecting piece 3 is pushed into the recesses of which sealing rings 4 and 5 are inserted, which are longer in the axial direction than the connecting piece 3, "so that they protrude from this. From both sides, disc-shaped closing pieces 6 and 7 are pushed over the tubes 1 and 2, which are attached to the protruding end faces of the sealing rings 4, 5. The locking pieces 6 and 7 are connected to one another by at least two tensioning members 8, three screw bolts with nuts 10 in the example shown.

The outer surfaces of the tubes 1, 2 form the inner walls of the two chambers for the Dicirfcungsringe 4 » 5 · The outer walls are formed by the connecting piece 3, which is more or less graduated according to the two pipe diameters. On the front side, the two chambers are also closed off by the connecting piece 3 on the sides facing one another, while the frontal closure on the axially outwardly lying sides is formed by the two locking pieces 6 and 7.

This pipe connection can be assembled in the following way: First, the closure piece 6, the sealing ring 4 and the connecting piece 3 is pushed over the end of the tube 1 until the inner shoulder 9 of the connecting piece 3 rests against the end face of the tube 1. Then the sealing ring 5 and the locking piece 7 pushed over the end of the tube 2 and this so far inserted into the tube 1 until the position shown in Fig. 1 is reached is, wherein the sealing ring 5 comes to lie in the closure piece 3. Finally, the three bolts 8 are through Bores of the locking pieces 6 and 7 inserted and by means of the Nuts IC screwed. Since the sealing rings 4 and 5 via the connector 3 protrude axially, they are tightened by the cutters. 10 on the three screw bolts 8 by means of the locking pieces 6 and 7 compress and thus on the one hand as.

409882/0409

-A-

binding piece 3 and on the other hand to the outer walls of the pipes 1 and 2, the more the nuts IO are tightened, the more effective the seal. The consequence of this is that the medium which flows through the pipes 1, 2, through none of the between the individual parts of the pipe connection with each other and existing between the parts of the pipe connection and the pipes 1, 2 " Column can emerge. The sealing contact of the sealing rings 4, 5 on the chamber walls and the effective closure of the Tolerance gap can be adapted to the pressure prevailing in the pipes by tightening the nuts 10 accordingly.

The embodiment shown in Fig. 4 corresponds essentially of the embodiment according to FIGS. 1 to 3. Here, too, there are two Tubes 11 and 12 plugged into one another, via which a connecting piece 13. Is pushed, in its radially offset recesses seal; rings 14 and 15 lie, the end faces of which are in contact with the locking pieces 16 and 17, the latter by screw bolts 18 and their nuts 20 are connected to one another.

Since this embodiment, however, primarily for the connection is determined by pipes, of which at least one of a sensitive material, such as. B. glass or plastic, "was it is desirable to be able to regulate the contact pressure of the sealing rings 14, 15 for each of the tubes 11, 12 individually. To that end is here a pressure ring 21 is provided which is attached to an outer shoulder 22 of the connecting piece opposite the inner shoulder 19 13 applies and can be screwed to the screw bolt 18 by additional nuts 23. This enables the through the pressure exerted on the sealing ring 14 by the locking piece 16 is higher than the pressure exerted on the sealing ring 15 is exercised.

In the embodiment shown in Fig. 5, the tubes 31, 32 same diameter. In this case it is therefore sufficient to have a

409882/0409

Provide a single chamber, the inner wall of which through the outer surfaces of the tubes 31, 32 and their outer wall is formed by a connecting piece 33. The sealing ring 34 could also be in this Pail protrude in the axial direction over the connecting piece 33 and by locking pieces 35, 36 by means of the screw bolts 37 and whose nuts 38 are pressed together. In contrast to the However, the two embodiments described above are two here Intermediate rings 39, 40 are provided, both these intermediate rings and the locking pieces 3.5 »36 bevels directed towards one another 41, 42 and 431 44 ', in which clamping profile rings 45, 46 are inserted. By tightening the screw bolts 37, the locking pieces 35 ', 36 first act on the * clamp profile rings 45, 46 and only over this and the intermediate rings 39, 40 on the sealing ring 34. This has the consequence that in addition to the Installation of the sealing ring 34 also through the clamping profile rings 45, 46 a pressure on the pipe walls is achieved.

In the same way in all other embodiments such profiled clamping profile rings with and without intermediate rings are provided. "

The embodiment according to FIGS. 6 and 7 is intended for the connection of two tubes in which the mutual axial Position should also be secured - i.e. via the fixation addition, which is caused by the contact pressure of the sealing ring. Such security could of course also be achieved by that the locking pieces are welded to the pipe, on which they are postponed. However, this would delay assembly and accordingly make repair work more expensive and difficult. The embodiment according to FIGS. 6 and 7 therefore provides that on each of the tubes 51, 52, together with the closure piece

one or more parts

53, 54 »a / clamping ring 55, 56, preferably with a roughened or corrugated Inner surface, pushed on and clamped immovably on the pipe by means of the clamping screw 57, 58.

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The assembly is then carried out in a similar way to the embodiment according to Pig , which is 55 56 provided for the clamping screw 57 _f 58, abzuschlieesen compared with yours. gasket ring 62. the end of the sealing ring 62 outside to now forms the connecting piece 63. If the prepared tube ends from both sides in the sealing ring 62 is inserted and the bolt 64 Tightened by means of the chucks 65, the pipes 51, 52 are pulled together, since the screw bolts 64 act on the clamping rings 55, 56 via the locking pieces 53, 54 and these are immovably connected to the pipes 51, 52 by their clamping effect.

In this embodiment, the closure pieces 53, 54 much thinner, e.g. B. made of pressed sheet steel. Your outer angled edge 66, 67 provides the necessary stiffening. In order to improve this even further, the inner edge 68, as shown in the case of the lower closure piece 63, can also be flanged will. It goes without saying that the clamping rings described above and their attachment also for pipe connections according to Figs. 1 to 4 can be used, which are intended for connecting pipes of different diameters.

409882/0403

Claims (9)

Claims | 1.JPipe joint with seal, one or two with one Sealing ring filled chamber "or chambers" in the "or, apart from the tolerance gap, the pipes to be connected the inner chamber wall or the inner chamber walls "form and the chamber "or chambers radially outwards through at least one the connecting piece surrounding the pipes is or are, characterized in that means are provided which the sealing ring (4, 5f 14, 15134; 62 of each chamber through axia-. len pressure deform and thereby against the pipe (1, 2; 11, 12). "or press the tubes (31, 32j 51, 52). 2. Pipe connection according to. Claim 1, characterized in that the middle axial locking pieces (6, 7} 16, 17; 35, 36) are for the chamber or chambers that close it at the front and are held together by clamping members (8, 10; 18, 20, - 23i 37, 38; 64, 65). 3. Pipe connection according to claim 1, characterized in that the connecting piece (3J 13) is stepped inwardly is different to adapt to pipes (l, 2j 11, 12) Diameter. . · 4 · Pipe connection according to "Claim 3» characterized in that that the connecting piece (13) has a shoulder (22) on the outside, on which a pressure ring (21), which is connected to the clamping element (18, 23) cooperates, attacks. 5. Pipe connection according to claim 1, characterized in that that between the sealing ring (4, 5i 14, 15; 34) and the closures tttcken (6, 7; 16, 17; 35, 36) intermediate rings (39, 40) are arranged. 409882/0409 _ 8th 6. Pipe connection according to claim 5 »characterized, that between .the sealing ring (4, 5j 14, 15; 34) or the Intermediate ring or the intermediate rings (39, 40) and the locking pieces (6, 7; 16, 17 | 35, 36) clamping profile rings (45, 46) - are inserted. 7. Pipe connection according to claim 6, characterized in that. the locking pieces (6, 7} 16, 17 - 35, 36) and / or the intermediate rings (39, 40) have mutually directed bevels ($ 1, 42j 43, 44) to accommodate the clamping profile rings (45, 46). 8. Pipe connection according to claim 1, characterized in that for each pipe (51, 52) in addition to the closure piece. (53, 54) a clamping ring (55, 56) is provided, which - can be slid and clamped on the pipe. 9. Pipe connection according to claim 8, characterized in that a cover washer (59, 60) is provided between the clamping ring (55, 56) and the sealing ring (62). 409882/0409 Blank page