DD204981A1 - TUBE FITTING WITH MOTION COMPENSATION - Google Patents

Abstract

The invention relates to a compensating screw, with the help of which it is possible to compensate for the axis line and angle deviations occurring when laying the pipes when connecting the pipe ends. According to the invention, the pipe fitting consists of a sleeve, which has saw thread at both ends and ball pans, which serve to receive spherical caps and double-sealing rings, are incorporated in both end faces. During assembly, the pipe connection is pushed in the untensioned state on the one riser, then applied well distributed on the second riser to be connected u. then screwed together hermetically by a cap nut. The invent. is applicable in pipeline construction for the installation of water and heating systems as well as in mechanical engineering.

Description

Title of the invention

Pipe fitting with motion compensation

Field of application of the invention

The invention "relates to a flexible, detachable pipe fitting for connecting risers, in particular in housing ·

Characteristic of the known technical solutions

The connection of the riser in industrial housing construction requires a considerable manual and time-consuming effort · Currently, the riser strands, which are galvanized in steel or black, in the individual floors by means of long sleeve and lock nut, screw with union nut and flanges, or , connected by welding »The riser strings made of PVC-H are connected by means of a long sleeve, inserted round ring or · folding technique · All these types of connection do not allow length compensation«

In the connection of the connection points of pipelines and in particular in the prefabricated kitchen Badzellen and also in the assembly of the various devices to be connected to the Rohrnetsnets devices, such as water meters, fittings, gas meters, etc., cause already deviations of a few millimeters between the axis lines of the pipe ends to be connected or a few "angles"_; ichungen., Schwj.erigkeit.eia ,. during assembly · While a certain amount of expansion is still possible with PVC-H riser cages thanks to the inserted round ring over the not additionally bonded beaded sleeve «

In these cases, the quality of the connection is impaired and the hermetic seal is no longer ensured.

There are known detachable pipe joints of pipes of the same and different nominal diameter, which have a relatively rigid connecting element and in which the compensation of the types of movement is extremely low ·

In Hungarian patent application 124 066, the invention relates to fittings which are bolted to the pipes. This compound can be said to be rigid, i. no stress and strain compensation is possible »Leakage may occur at the weld seams«

Another invention is explained in the publication 2006 845 (FRG), which is similar in principle to the Hungarian patent application 124 066. The invention shows a movable intermediate piece, which is attached by means of welding, screwing and splashing to the pipes to be joined. The seal of the pipes to be joined is achieved by O-rings, if necessary by flat gasket. Centering for the correct screw connection is not guaranteed ♦ This means that no optimal stress-free sealing effect can be achieved «

In the patent 60 4 64 DDR is a compensating pipe in line special design, which can compensate for changes in length only »In the patent 112 305 DDR a flexible pipe joint is shown with bellows. The flexible pipe connection has the advantage over all other models that it ensures the compensation of movement types properly. However, due to its stainless steel construction, this model is extremely costly and also very sensitive to installation.

A disadvantage of the hitherto used pipe joints is that they work on the principle of static friction and therefore have only a limited axial balancing, i. There are often limited exercise options available.

A major disadvantage of various variants is that relatively many items are used, which complicate an overhead assembly very »Due to the deviations of a few millimeters between the axis lines of the pipe ends to be connected often a few meters of already installed or installed pipe must be solved and again after connection be attached «

This procedure causes additional costs and impairs the quality of the assembly ·

Object of the invention

The object of the invention is to provide a detachable and reusable pipe connection which compensates or compensates for the occurring inaccuracies of the assembly in the subsequent connection of separately mounted or "laid pipe sections, so that a simple hermetic sealing of the pipe system is ensured.

Explanation of the essence of the invention

The invention has for its object to develop an intermediate piece that is suitable for the adjustable absorption of Moatageungeaauig & eiten that receives the axial, angular and lateral movements, easy to install, is susceptible to interference and flexible. The invention is intended to have the advantages of the previously known compounds, but avoid the Hachteile this »

According to the invention this object is achieved by the new pipe fitting of a sleeve 1, which has a saw thread 2 at both ends, consists * In both end faces so-called ball pans 3 are incorporated »In these ball pans 3 is made of wear-resistant plastic material Kugelkalottenring 4 or 7 inserted »The parts are produced from temperature-resistant and pressure-resistant plastic material from domestic sources using the injection molding process * In the injection molding process, the parts can be produced efficiently and inexpensively without any subsequent IT work, fully automatically and therefore economically ·

embodiment

The invention; will be explained below with reference to an embodiment "In the accompanying drawings show:

Pig · 1: a version of the pipe connection for connecting pipes with the same characteristic, in section

Pig · 2: Plague point representation, pre-assembled

Pig. 3 J plunger point representation, mounted

Pig.4 + 5 ' Puncture scheme for tube expansion positions.

The pipe fitting consists of a sleeve 1, which has a saw thread 2 at both ends. In both end faces so-called ball pans 3 are incorporated »In this ball cups 3 made of plastic material Kugelkalottenring 4 or 7 is inserted, - in which a double sealing ring 5 is located. The Kugelkalottenringe 4 and 7 have at their ends in each case a cylindrical diameter and act as a centering ring 4.1 or 7 »1 on the pipes to be connected. As a result, it is forcibly ensured that the double sealing ring 5 always maintains the prescribed sealing position due to the position of the pipe,

A jamming or distortion of the sealing element by oblique pipes 10 and 11 can thus not occur and the operation of the double sealing ring is similar to those of the known O-rings or circular rings ·

As a sealing element acts a double sealing ring 5 made of elastic material which is in .dem Kugelkalottenring 4 or «"., The Dichtlider 5 «1 of the double sealing ring 5 have a special profile and make the corresponding movements with expansion of the pipeline, ie that the Dampers 5.1 migrate along with the movement of the tube · (see FIGS. 4 and 5) Abrasion is largely avoided by this entrainment and accompanying movement of the elastic sealing lips 5.1. The groove situated between the elastic sealing lips 5 is formed as a fat chamber 9 and thus acts Lubricating during large movements of the pipes and thereby avoiding any wear «

One side of the pipe fitting is designed as a pest point. The Kugelkalottenring 7 is slotted on one side (two or four times) and the · inner bore 8 formed as a clamping or cutting ring. The Kugelkalottenring 7 has a larger radius than the ball socket 3 of the sleeve. 1, so that when tightening the nut 6, a clamping of the tube 11 takes place. The firmer the cap nut 6 is tightened, the firmer the clamping and sealing action on the tube 11 and the wider the sealing surface of lying in the ball socket 3 of the sleeve 1 Kalottenringes 7 (see Figure 3) · The property of the universal motion compensation the pipe fitting remains intact ·

When manufacturing the pipe fitting is to be noted that the Kugelkalottenring 4 or · 7, a slightly larger radius than the ball socket 3 of the sleeve 1, so that when tightening the nut 6, an additional sealing effect is achieved »The pipe connection can be solved as often be, the sealing effect is not lost. The invention has good properties in terms of ease of installation and _{Korrqsionssiche:} Sa fe ty. The material used in the production of the pipe fitting compared to conventional types is much lower.

Claims (4)

invention claim 1 · Pipe fitting with motion compensation for connection of pipelines and for accommodating axial line deviations between the already installed pipelines, characterized in that the pipe fitting consists of a sleeve (1) with union nuts (6), molded saw threads (2) and incorporated ball pans (3) Admission of spherical cap rings made of wear-resistant plastic material (4,7) admits · 2 » Pipe fitting according to item 1, characterized in that the Kugelkalottenringe (4,7) have a larger radius than the ball socket (3), one-sided multiple slotted and the inner bore (8) formed as a clamping and cutting ring and inside the U-shaped Profils double sealing rings (5) are arranged » 3 · Pipe fitting according to point 1 and 2 characterized in that the double sealing rings (5) consist of elastic material and between the sealing lids (5 · 1) a hat is designed as a fat chamber · 4 · Pipe fitting according to items 1, 2 and 3, characterized in that in the Kugelkalottenringen (4,7) centering rings (4 · 1, 7 · Ό are arranged.