DE350608C - Pipe connection with wedge-shaped press pieces - Google Patents

Description

GERMAN EMPIRE

ISSUED
ON MARCH 23, 1922

REICH PATENT OFFICE

PATENT LETTERING

- M 350608 CLASS 47f GROUP

Mannesmannröhren-Werke in Düsseldorf. Pipe connection with wedge-shaped press pieces. Patented in the German Empire from June 27, 1919 onwards.

In the case of flange connections of pipes, machining has hitherto been required in most cases made of the pipe ends. There was either a flange as an abutment for the flanges are made or a collar is screwed on, soldered on or welded on. In all of these operations, however, the pipe material was more or less adversely affected and thereby a weakening of the pipe end that is currently most stressed brought about. Increasing the diameter at the end of the pipe also increases the Space requirement of the pipes during transport. Damage to the flange or collar of the

The pipes that were laid also required the pipes to be replaced, as the ones in the ground were lying pipes could not attach new flanges or the like.

It has already been proposed to split on smooth tubes, externally wedge-shaped Put on rings or semicircular shells, flange them through internally conical sprues to press onto the pipes and then use ίο the flange screws to make a connection to manufacture.

With this device, the semicircular nestles evenly everywhere Shells completely excluded because of the rigidity of the shells. These are therefore only available few places, so that a secure connection that can withstand greater stresses so that is not attainable.

Should PROPOSALS for other \ ^T slotted ao wedge-shaped rings with the interposition of a soft sealing sleeve are placed on the pipes. Here, too, a firm connection cannot be achieved, since the soft intermediate link prevents the sleeves from resting firmly on the tubes and then cannot withstand even greater stresses.

The present flanges, collars or the like avoiding pipe connection is characterized in that that the known wedge-shaped, resilient by incisions as pressed pieces Made rings are used, but they sit directly on the pipes and when tightening the flanges suck the Connect pipe circumference.

As a result, in contrast to the known proposals, one that has not yet been achieved intimate connection between the tubes and wedge rings created that made them so solid on the pipes that the connection withstands the heaviest loads, does not diverges, but on the contrary, with greater tension on the flanges, tighter and tighter will. .

In the drawing, such a pipe connection is shown in one embodiment Fig. Ι shown partly in view, partly in section.

Fig. 2 shows one of the wedge rings used and Fig. 3 shows a detail.

The ends of the smooth tube α are placed against one another blunt, to each tube is a spring-b made by incisions wedge ring \ could, if necessary, consist of several parts, the 'overlap at the joints, slid. Flanges c sit on these wedge rings b, which are united by screw bolts d and can be brought closer to one another by tightening the nuts. During this movement, the wedge rings b are slightly reduced in diameter and thus pressed onto the tubes with great force, so that a perfectly firm connection is created between the rings and the tubes.

^: As a result, as the flanges approach, they take the pipes with them and tightly press the ends between which a gasket e is attached. The sealing joint is covered by a wedge ring that extends over it, as shown on the right-hand side of Fig. 1, ₃ , whereby the seal is held in place and the pipes are centered at the same time.

If necessary, as Fig. 3 shows, another die in a recess in the wedge ring Joint covering seal / can be attached.

In the case of the present pipe connection, any processing and weakening of the pipe ends is eliminated continue, the healthy pipe material is retained, the connection is not thereby only better, but also cheaper.

The connection can be retrofitted anywhere, even on pre-assembled lines will. If the pipe breaks, only the damaged piece needs to be cut out the ends of the pipe that is still good are then connected to the present one without removing it Provide a connection and at the same time insert a new adapter. Previously, the damaged pipe had to be removed and sent to the factory, which means a lot of time lost, costs and operational disruptions were incurred. ,

Another advantage of the new connection is that it can now be used smooth tubes a far easier dispatch by name to ship with much less Space requirement than before. The connecting parts can be packed in boxes and stow the 'smooth pipes tightly. Any reworking at the point of installation, as well as subsequent work Rolling up of collars or the like is now eliminated.

Claims (1)

Patent claim: Pipe connection with wedge-shaped pressing pieces that go through the tightening flanges the pipes are pressed, characterized in that wedge-shaped, known as pressed pieces, by incisions spring-made rings are used that sit directly on the tubes and when tightening the flanges, firmly attach themselves to the pipe circumference. For this purpose ι flowers drawings.