DE1885741U - PIPE WITH ENDS THICKENED BY RINGS OR PIECES OF PIPE. - Google Patents

Description

The subject of the invention "consists of pipes, e.g. for the production of lines coupled with one another or with units ^ and for grooving the coupling: lungsnute or for any other reason to the Ends need to be thickened. Such thickenings have hitherto been relatively thin-walled at the ends Pipes in the form of rings or pipe pieces pushed onto the pipe ends or welded soldered on.

Postal checking account: Mönchen 165624 Bank: Dresdner Bank Munich 52010

Ii 26 20i / 47f 6365

This kind of connection between the individual resp. Pipe sections and the pipe ends is not corrosion-resistant and also does not allow the use of different ones that cannot be welded or soldered to one another Metals for the tubes on the one hand and the Verdiekungsringe on the other hand.

To avoid these disadvantages is the purpose of the present invention, which is achieved in that the pipe ends thickening rings or pieces of pipe that are pushed onto or into or onto and into the pipe ends, under ring serration are connected to one another in a pressure-tight manner by means of pressure.

Depending on their intended use, these pipe ends can be thickened can then be adapted to the respective purpose, e.g. as a pipe groove coupling connection, e.g. by piercing a coupling groove or by other processing.

According to the invention, the tubes and by pressing rings or pipe sections fastened on or in their ends consist of different metals, since no consideration is given to their weldability or solderability needs to take. For example, for fuel lines certain pipes made of an aluminum alloy and those on the pipe ends e.g. as lut rings for pipe groove coupling covers pressed on rings or pipe pieces made of rustproof

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consist of high-strength steel, lan receives pipes as a result of relatively low weight, so they look can be easily transported and laid to fuel lines and those connected to them at their ends in a pressure-tight manner Hat rings for the Sohrnutkupplungen of high strength and are insensitive to corrosion.

Further details of the invention are based on this below the drawing showing some exemplary embodiments. The drawing shows the end of a tube with a vertical groove according to the present invention Sectional (3? Ig.i) and ends of the pipe end parts in section (lig, 2-4).

lach Pig.1 are the ends of a tube T pushed through Rings or pipe pieces 2 thickened on their inner surface have parallel annular grooves 3. The rings or pipe sections 2 are preferably made of stainless high-strength steel, while the pipes 1 are made of an aluminum alloy, for example can exist.

For the purpose of fastening the rings or pipe sections 2, these are held in a jig from the outside non-deformable. Then the end of the pipe 1 is then pressed from the inside to the outside by means of a suitable pipe roller deformed until the parallel inner grooves of the rings or Rohrstüeke 2 from the metal of the pipe end "la completely and filled in pressure-tight. This connection between the pipe end and

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Thickening ring or pipe piece is only through. Destruction ' one or the other part can be canceled.

In the embodiment according to üg.1 that is with the pipe end 1a connected thickening piece (ring 2) with a Annular groove 4 provided for a pipe groove coupling.

Figures 2 and 4 show that to any other Purposes more or less thick-walled rings "or pipe pieces or 6 in the manner described on the ends 1a of the pipes 1 can be attached.

If necessary, as! Ig.3 indicates, the end 1a of the Tube 1 can also be thickened by two rings or pieces of pipe 7 or 8 in such a way that one ring, 7 »and the other ring, 8, is pushed into the pipe end 1a. There are ring grooves 3 on the inner surface of the outer ring or pipe section 7 and annular grooves 3a on the outside jacket surface of the inner ring or pipe section 8 is arranged. The inner ring 8 can also have a weakly conical: outer jacket as indicated in Fig. 3. Also in this ! all is pressed by the inner or outer ring 8 or 7 or both rings are deformed at the same time so that the metal of the pipe end 1a is in the annular grooves 3 and 3a, filling this pressure-resistant, squeezed. In this fastening. supply form can, if necessary, both the pipe and the Outer ring 7 and also the inner ring 8 each from. consist of another metal.

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Claims (4)

P.A. 768 297 * 11/28/63 -5 - L 26 20i / 47f 6365 S c Ii u t ζ a η s ρ r ü c h e 1. Tube with thickened by rings. · Or Rohrstüeke ends, characterized in that the Pipe ends (1a) thickening rings or pipe sections (2,5,6,7,8) on or in "or on and in the pipe ends (1a) are pushed and provided with annular grooves with which the pipe ends are toothed pressure-tight by pressing are. . 2. Pipe according to Claim 1, characterized in that that the outside by ring grooves on the pipe ends (1a) "attached rings or pipe pieces as Provide Uutrings for pipe groove couplings with an annular groove (4) are. 3. Tube according to claim 1, characterized thereby ei chn e t that the one with the pipe ends (1a) with annular groove teeth rings or pipe sections connected in a pressure-resistant manner (2,5,6,7,8) consist of a "different metal than the tubes (1). ~ ~ ".. _- 4. Tube according to claims 1, 2 and 3, thereby g e k e η η ze i chn e t that on or in or on and in the Pipe ends (1a) of a pipe (1) made of aluminum alloy Rings or pipe pieces made of another metal, e.g. made of stainless high-strength steel with ring groove teeth are fastened pressure-tight by pressing.