WO2016139004A1

WO2016139004A1 - Connection arrangement

Info

Publication number: WO2016139004A1
Application number: PCT/EP2016/050643
Authority: WO
Inventors: Daniel Dorn; Anne-Carina May
Original assignee: Contitech Techno-Chemie Gmbh
Priority date: 2015-03-04
Filing date: 2016-01-14
Publication date: 2016-09-09
Also published as: DE102015203851A1

Abstract

The invention relates to a connection arrangement (10, 10') for connecting two pipe portions (12,12', 14, 14'), a first pipe portion (12, 12') and a second pipe portion (14, 14'), in a fluid-permeable and hose-free manner. In a mounted state, the second pipe portion (14, 14') is received in an axially movable manner in the first pipe portion (12, 12') partly at the end face, and the second pipe portion (14, 14') has at least one seal seat (16, 16') arranged within the first pipe portion (12, 12') for receiving at least one seal element (22, 22'). According to the invention, the first pipe portion (12, 12') has a first axial stop (26, 26') and a second axial stop (28, 28'), each of which is integrally formed with the first pipe portion (12, 12'), in a mounted state in order to restrict the movement of the second pipe portion (14, 14').

Description

description

joint assembly

The invention relates to a connection arrangement for tubeless fluid-permeable connection of two pipe sections according to the preamble of claim 1.

For connecting fluid-carrying pipelines with each other or with a

fluid-giving or fluid-receiving aggregate are a variety of

Pipe joints and couplings known. The connections and couplings for connecting pipes, for example, have to compensate for varying expansions and contractions during operation, and moreover, a tolerance compensation is often required during assembly of the pipelines.

For the connection of two pipes, for example, from DE 19740356 Cl a pipe quick coupling for sealingly connecting two pipes is known, which has a arranged on the outside of a tube annular cage in which an annular coil spring is arranged, which in axially interleaved tubes via a flaring on End of the other tube snaps and connects the two tubes together. It is in a thickening of a pipe a

Seal arrangement provided in the form of annular grooves and O-ring seals. The thickening of the one tube is displaceable over a considerable distance with a sliding fit in the receiving tube. The arranged on the one tube annular cage with the annular coil spring is also displaced with its inner diameter on the outer circumference of the tube. Although this tube quick coupling allows tolerance compensation in the axial direction, but the tube ends of the two tubes designed in this way are expensive and expensive to manufacture. In addition, increased care is required during assembly, since, for example, the annular cage already before the assembly and production of a pipe must already be arranged on the recorded pipe end, as slipping over the free end of the pipe is not possible. Furthermore, couplings are known in which to compensate for tolerances in the use of piping or connections to units hose assemblies as flexible intermediate elements, for example, between a pipe and a

Aggregate, are used. Thus, for example, a fluid-conducting unit can be connected to a fluid-emitting unit, through which the fluid flows through a

application-specific length is transportable. However, in order to achieve a tolerance-compensating connection to a fluid-absorbing unit, a hose is usually connected between the fluid-carrying pipe and the connection to the fluid-absorbing unit, which is flexible enough, the necessary

Ensure tolerance compensation. The disadvantage here, however, in addition to the increased cost of the additional components required, the hose pieces, the increased

Assembly costs, which is required for installation of the hose pieces.

It is therefore an object of the invention to provide a connection arrangement for fluid-permeable connection of two pipe sections, which allows a simplified assembly and a reduction of manufacturing costs.

The object is achieved according fiction, by a connection arrangement for tubeless fluid-permeable connection of two pipe sections with the features

Claim 1 solved. Advantageous developments are described in the subclaims.

A connection arrangement for tubeless fluid-permeable connection of two pipe sections, with a first pipe section and a second pipe section, wherein the second pipe section is partially axially displaceably received in an assembled state partially end in the first pipe section, and the second pipe section at least one arranged within the first pipe section seal seat for Receiving at least one sealing element. According to the invention, the first Pipe section in an assembled state for limiting the movement of the second pipe section on a first axial stop and a second axial stop, which are each formed integrally with the first pipe section. The seal seat of the second pipe section is for receiving at least one

Sealing element formed, wherein the seal seat in an assembled state of the connection assembly within the first pipe section, in particular translationally in the axial direction along a longitudinal axis of the first and / or second pipe section, is displaceable. The at least one sealing element ensures a

Fluid-tightness of the assembled connection sanordnung, whereas a release of the connection arrangement, in particular in the axial direction, is avoided by contacting the second pipe section with the first or second axial stop. A tolerance compensation in the axial direction of the connection arrangement is adjustable by the distance of the first axial stop and the second axial stop to each other. A rotational tolerance compensation, in particular about a longitudinal axis of the first and / or second pipe section around, can be made possible by Lospassung the second pipe section within the first pipe section, wherein the tightness of the connection arrangement is further ensured by the at least one sealing element. Due to the one-piece design of the first axial stop and the second

Axialanschlages the first pipe section, a permanent connection arrangement can be made, which ensures a reliable connection of the first pipe section and the second pipe section. It can by the one-piece

Forming the axial stops with the first pipe section additional components can be saved, whereby a more cost-effective and simplified assembly of the connection arrangement can be made possible.

In a preferred embodiment of the invention, the second axial stop at a free end of the first pipe section by a reduction of the inner diameter of the first pipe section, in particular by forming, is formed. In the region of the second axial stop, a wall thickness of the first pipe section in

Remain substantially constant, the second axial stop, for example, by a Forming process can be produced. This can be effected, for example, by rolling, squeezing and / or pressing the free end of the first pipe section. The inner diameter of the first pipe section at the free end is smaller than an outer diameter of the seal seat of the second pipe section, whereby a positive second axial stop can be formed at the free end of the first pipe section. By integrally with the first pipe section

trained second axial stop can be a permanent, thread-free

Connection arrangement can be produced, which at the same time at least one translational and / or rotational tolerance compensation, for example, in the axial direction along or around a longitudinal axis, around.

In a further preferred embodiment of the invention, the second

Pipe section, in particular in the region of the at least one seal seat, a substantially constant wall thickness. On the second pipe section can end, in an assembled state of the connection arrangement within the first

Pipe section a plurality of sealing seats arranged to receive a plurality of sealing elements. The at least one sealing seat can be produced, for example, by forming, wherein the wall thickness remains substantially constant. By producing the at least one seal seat by reshaping manufacturing process cost-effective production of the second pipe section can be made possible.

In a particularly preferred embodiment of the invention, the at least one sealing seat has a respective annular formed first and second, in particular formed by forming, bead for the axial support of a sealing element. A sealing seat for receiving a sealing element has in each case in the axial direction two mutually adjacent beads, between which a

Sealing element can be added. By the first and the second bead, the sealing element can be supported in the axial direction with a displacement of the second pipe section within the first pipe section. A bead can also be assigned to two adjacent sealing seats. In this case, the bead between two adjacent sealing elements may be arranged and support them in the axial direction. The Producing the first and the second bead to support a sealing element and to form a seal seat by forming allows a cost-effective production of the seal seat. In a further preferred embodiment of the invention, the second pipe section is arranged tiltable relative to the first pipe section in an assembled state.

In this case, the outer diameter of the second pipe section, in particular in the region of the second axial stop and / or the free end of the first pipe section, and the inner diameter of the first pipe section in the region of the second axial stop are formed such that the inner diameter of the second axial stop and / or the free End of the first pipe section is larger than an outer diameter of the second pipe section and smaller than an outer diameter of the seal seat. As a result, the second pipe section and the first pipe section are in the region of the second

Axialanschlages in the radial direction, in particular by an annular gap, spaced from each other, whereby a tilting of the second pipe section can be made possible within the first pipe section. Due to the tiltable connecting arrangement, an additional tolerance compensation can be made possible in addition to the translatory and rotary. In a further preferred embodiment of the invention, the beads of the at least one sealing seat have different outer diameters. The second bead, for example, which is formed adjacent to the second axial stop, may have a larger outer diameter than the first bead, which is arranged facing the first axial stop of the first pipe section. Thereby, a tilt angle of the second pipe section within the first pipe section around the second bead around can be increased. By the first bead, which may have a smaller outer diameter than the second bead, while a secure holding the at least one sealing element and contacting the first axial stop is ensured. This allows the tolerance compensation by tilting the second

Pipe section against the first pipe section to be further increased. In a further preferred embodiment of the invention, a region of the first pipe section for receiving the second pipe section is produced by forming. The first pipe section can be in the area for receiving the second

Pipe section, in particular between the first axial stop and the second axial stop, have a substantially constant wall thickness. By producing the receiving region of the second pipe section by reshaping manufacturing processes, in particular expansion, is a particularly cost-effective

Production of the first pipe section possible. In a particularly preferred embodiment of the invention, the first

Pipe section and the second pipe section, in particular in the region of at least one seal seat, substantially the same inner diameter. As a result, constrictions can be avoided, which lead to the disturbance of the fluid transport, so that line losses can be avoided.

In a particularly preferred embodiment of the invention, the sealing element is designed in the form of an O-ring. This can be cost-effective industrial

Standard components are used, which allow a cost-effective production of the connection arrangement.

In a particularly preferred embodiment of the invention, the first pipe section is an aggregate connection, in particular in the form of a sleeve or a ring piece connection. The first pipe section can be directly connected, for example, with a fluid-emitting or fluid-absorbing unit. The first pipe connection can be designed in the form of a sleeve which, for example, can have a thread for a screw connection to an aggregate at an end opposite the free end. In a first pipe section in the form of a ring piece connection, in an assembled state, an annular region of the ring piece connection can surround a pipe, for example an aggregate, to be connected in a fluid-permeable manner radially on the outside, wherein a fluid is enclosed, for example, by a radial opening of the pipe and through the ring piece connection can flow. As a result, a, in particular of an aggregate, detachable connection arrangement can be formed.

Furthermore, the invention relates to a connection system with at least two connection arrangements as described above. The connection system can be designed in the form of a coupling for tubeless fluid-permeable connection of at least two pipe sections. In this connection, connection arrangements can each be arranged with their first pipe sections fluid-permeable to one another. The first pipe sections of the connection arrangements can be formed in one piece. This has the advantage that a reliable tubeless connection of, in particular second, pipe sections is made possible with a tolerance compensation.

An embodiment and further advantages of the invention are explained below in connection with the following figures. It shows:

Fig. 1: a partially sectional view of an inventive

Connecting arrangement in an assembled state;

Fig. 2 is a partial sectional view of a connection arrangement with the second

Pipe section at the second axial stop;

3 shows a partial sectional view of a connection arrangement with the second

Pipe section at the first axial stop;

4 shows a connection system which comprises two connection arrangements; and Fig. 5: a connection arrangement with a first pipe section in the form of a

Ring piece connection.

In Fig. 1, a connection assembly is shown in an assembled state, wherein the connection assembly 10 has a first pipe section 12 and a second pipe section 14, wherein the second pipe section is received with a free end within the first pipe section 12. The second pipe section 14 has at its free end within the first pipe section 12 a seal seat 16, which by an end arranged first bead 18 and an axially thereto spaced apart second bead 20 is formed. The first bead 18 and the second bead 20 form a shoulder in the radial outward direction, wherein between the first bead 18 and the second bead 20 a sealing element 22 in the form of an O-ring is arranged. The first bead 18 and the second bead 20 are annularly formed about a second longitudinal axis 24 of the second pipe section 14 around. The second pipe section 14 has in the region of the seal seat 16 a substantially unchanged wall thickness, wherein the seal seat 16 may be produced for example by forming. In the exemplary embodiment illustrated, the first bead 18 and the second bead 20 each have an outer diameter that substantially corresponds to an inner diameter of the first tubular section 12 in the region of the sealing seat 16.

The first pipe section 12 has adjacent to the first bead 18, a first

Axial stop 26 in the form of a radially inwardly formed offset.

Furthermore, the first pipe section 12 at a free end 32, the first

Axial stop 26 opposite, in particular adjacent to the second bead 20, a second axial stop 28. The second axial stop 28 is characterized by a

Reduction of the inner diameter of the first pipe section 12 in the region of the second axial stop 28 is formed. By thus formed constriction at the free end 32 of the first pipe section 12 an axial captive against the withdrawal of the second pipe section 14 is formed. The second axial stop 28 and / or the reduction in the inner diameter at the free end 32 of the first pipe section 12 can be produced inexpensively by forming, for example. In this way, the weight of the connection assembly 10 can also be kept low, since neither material thickening is necessary, nor extra components. The inner diameter of the second axial stop 28 is smaller than that

Outer diameter of the second bead 20 of the second pipe section 14. In the region of the second axial stop 28, the first pipe section 12 has a substantially constant wall thickness. A displacement of the second tube section 14 along the second longitudinal axis 24, which is arranged coaxially to a first longitudinal axis 30 of the first tube section 12 in the illustrated embodiment, is limited by the first axial stop 26 and the second axial stop 28 of the first tube section 12. The achievable in the axial direction translational tolerance compensation can be adjusted by the distance between the first axial stop 26 and the second axial stop 28 in the form of the length compensation d.

In Fig. 2, the second pipe section 14 is shown displaced in the axial direction such that the second bead 20 contacts the second axial stop 28, and thus the

Movement of the second pipe section 14 in the axial direction, in particular along the second longitudinal axis 24, limited. By having an inner diameter of the first

Pipe section 12 in the region of the second axial stop 28 and / or the free end 32 is greater than the outer diameter of the second pipe section 14 in this area, the second pipe section 14 and the first pipe section 12 by a circumferential, annular gap in the radial direction spaced from one another arranged. This allows tilting of the second pipe section 14 relative to the first pipe section 12. When the second pipe section 14 is tilted, a tilt angle (not shown) is formed between the second longitudinal axis 24 of the second pipe section 14 and the first longitudinal axis 30 of the first pipe section 12. The illustrated in Fig. 2 second pipe section 14 is not tilted to the first

Tube section 12 shown. The second pipe section 14 can be displaced in the axial direction by the length compensation d until the second pipe section 14 comes into contact with the first axial stop 26 (FIG. 3). In this case, the second pipe section 14 contacts the front end with its first axial stop 26 in the form of an inwardly directed radial shoulder. The first pipe section 12 can be designed as a sleeve, for example, which can be connected to a fluid-emitting or fluid-absorbing unit, in particular with its own free end 32 opposite end. A connection system 34 comprising two connection arrangements 10, 10 'is shown in FIG. The connection arrangements 10, 10 'each have a first pipe section 12, 12' and a second pipe section 14, 14 '. The two

Connecting assemblies 10, 10 'are each arranged with the first pipe sections 12, 12' to each other, wherein the first pipe sections 12, 12 'fluidly connected to each other and are integrally formed. The first pipe sections 12, 12 'are arranged in one piece, coaxial, mirrored opposite one another. This makes it possible to produce a fluid-permeable, tolerance-compensating connection between two tubes, in particular two second tube sections 14, 14 '. The two second pipe sections 14, 14 'each have two sealing elements 22, 22', which are arranged adjacent to first and second beads 18, 18 ', 20, 20'. Each connection arrangement 10, 10 'has two sealing elements 22, 22', wherein the sealing elements 22, 22 'in each case in a sealing seat 16, 16' are arranged and stored. An axial displacement of the second pipe sections 14, 14 'is limited in each case by first axial stops 26, 26' and second axial stops 28, 28 'of the first pipe sections 12, 12'. The second

Axial stops 28, 28 'are each formed by a narrowing of the free ends 32, 32' in the radial direction.

An embodiment of the connection arrangement 10 with a first pipe section 12 in the form of an annular connection structure, a so-called ring piece connection 36, is shown in FIG. The ring piece connection 36 is designed to be rotationally symmetrical about an axis 38. On the inside is the ring piece connection 36

fluidly connected to the second pipe section 14. This allows a fluid-permeable connection of the second pipe section 14 via the first pipe section 12 by means of the Ringstück- connection 36 done. The second tube section 14 has two axially spaced second beads 20, on which two sealing elements 22 are arranged. One adjacent to the first axial stop 26 of the first

Tube section 12 arranged sealing element 22 may be a first bead of the second pipe section 14, which can cooperate with the first axial stop 26 to limit the axial displacement of the second pipe section 14. In the opposite direction, directed outward, an axial displacement of the second tube section 14 bounded by the second axial stop 28, which can cooperate with a second bead 20 arranged adjacent thereto. The second axial stop 28 is formed by a radial narrowing of the free end 32, for example by forming.

LIST OF REFERENCE NUMBERS

(Part of the description)

10, 10 'connection arrangement

12, 12 'first pipe section

14, 14 'second pipe section

16, 16 'seal seat

18, 18 'first bead

20, 20 'second bead

22, 22 'sealing element

24 second longitudinal axis

26, 26 'first axial stop

28, 28 'second axial stop

30 first longitudinal axis

32, 32 'free end

34 Connection s ys tem

36 ring piece connection

38 axis d length compensation

A axial direction

Claims

claims

1. Connecting arrangement for the tubeless, fluid-permeable connection of two pipe sections (12, 12 ', 14, 14'), with a first pipe section (12, 12 ') and a second pipe section (14, 14'), wherein the second pipe section (14, 14 ') is axially displaceably received in an assembled state partially endwise in the first pipe section (12, 12'), and the second pipe section (14, 14 ') has at least one seal seat (16, 16) disposed within the first pipe section (12, 12') , 16 ') for receiving at least one sealing element (22, 22'),

characterized in that

the first pipe section (12, 12 ') in a mounted state for limiting the movement of the second pipe section (14, 14') has a first axial stop (26, 26 ') and a second axial stop (28, 28'), each in one piece are formed with the first pipe section (12, 12 ').

2. Connecting arrangement according to claim 1, characterized in that the second axial stop (28, 28 ') at a free end (32, 32') of the first pipe section (12, 12 ') by a reduction of the inner diameter of the first

Pipe section (12, 12 '), in particular by forming, is formed.

3. Connecting arrangement according to claim 1 or 2, characterized in that the second pipe section (14, 14 '), in particular in the region of the at least one sealing seat (16, 16'), has a substantially constant wall thickness.

4. Connecting arrangement according to one of the preceding claims, characterized

characterized in that the at least one seal seat (16, 16 ') has a respective annular formed first and second, in particular formed by forming, bead (18, 18', 20, 20 ') for the axial support of a sealing element (22, 22') ,

5. Connecting arrangement according to one of the preceding claims, characterized

characterized in that in an assembled state, the second pipe section (14, 14 ') is arranged tiltable relative to the first pipe section (12, 12').

6. Connecting arrangement according to one of the preceding claims, characterized

in that the beads (18, 18 ', 20, 20') of the at least one

Seal seat (16, 16 ') have different outer diameter.

7. Connecting arrangement according to one of the preceding claims, characterized

in that a region of the first pipe section (12, 12 ') for receiving the second pipe section (14, 14') is produced by deformation.

8. Connecting arrangement according to one of the preceding claims, characterized

characterized in that the first pipe section (12, 12 ') and the second pipe section (14, 14'), in particular in the region of the at least one sealing seat (16, 16 '), have substantially the same inner diameter.

9. Connecting arrangement according to one of the preceding claims, characterized

in that the sealing element (22, 22 ') is designed in the form of an O-ring.

10. Connecting arrangement according to one of the preceding claims, characterized

in that the first pipe section (12, 12 ') is an aggregate connection, in particular in the form of a sleeve or a ring piece connection (38).

11. Connection system (34) with at least two connection arrangements (10, 10 ') according to one of claims 1 to 10.