DE202005008213U1 - Line connection for pipeline has at least one resting surface of expanded part of one line part made to spherical shape - Google Patents

Abstract

The line connection between two parts (1, 2) of a pipeline has radial expansions, over which a shaped muff (3) fits, pressing the two parts against each other. At least one resting surface (1.2, 2.2) of the expansion (1.1, 2.1) of one line part is made to a spherical shape. The center point of the radius of the spherical resting surface may be on the axes or extensions of the corresponding line part.

Description

The Invention relates to a line connection between two line parts, wherein the conduit parts have radial extensions, which of a Clamp overlapped are, whereby the line parts are pressed against each other.

Such conduit connections are known, for example, the one part of a housing, such as a motor housing, with a tubular nozzle, which has an extension in the form of a flared flange, and the other conduit part is a pipeline, for example, an exhaust pipe. Such a line connection is for example from the DE 203 17 425 U1 known.

adversely in these line connections is that the line parts to be connected must be exactly aligned, i.e. their axes must match and left connections of the axes, as they always can not occur can be compensated. this leads to to do that at an angular misalignment of the axes of the Leads the clamping forces the seated clamp does not act evenly over the entire circumference, rather lateral forces and bending moments are generated, which in particular, when the connection changing temperature load cycles is exposed to leaks quickly to lead can.

Of the The invention is therefore based on the object, a generic line connection to the effect continue to develop that also angle deviations of the connecting Conduit parts these can be mounted easily and reliably balanced as well the line connection permanently ensures a high density.

According to the invention said task in a line connection of the aforementioned Sort of solved by that at least one contact surface the extension of a line part a dome-shaped contour having.

Thereby that the free investment area one of the extensions or flange parts of the conduit parts dome-shaped is, is a certain angular offset of the interconnected Pipe parts possible.

According to a highly preferred Embodiment of the invention is provided that the center of curvature the dome-shaped Contour is on the axis of the corresponding line part. hereby the tightness of the connection is supported.

In an alternative preferred embodiment may be provided that an extension with dome-shaped contact surface as solid bead is formed and / or that an extension with dome-shaped contact surface as profiled pipe section is formed.

In Another alternative embodiment may be provided that the a convex dome-shaped contact surface of a line part facing contact surface of the other line part with one of the convex dome-shaped Plant area corresponding Innenkalotte is formed or that at the dome-shaped contact surface of the a line part fitting extension of a second line part is designed to widen conically.

to increase the contact pressure and thus the tightness can be provided that the extension of a line part with an annular bead is trained and / or that the overarching clamp on their Extending or distributing an annular, multiple punctiform or several semi-annular Has beads.

So far is provided that faces away from the dome-shaped contact surface backward side the extension of a line part is tapered conically, the profile clamp sits firmly on the beveled conical backward side the extension provided on line part. In contrast, is the profile clamp in an embodiment in which facing away from the dome-shaped contact surface backward side the extension of a line part also formed dome-shaped is, movable to the corresponding line part.

Farther can increase the tightness be provided that a seal between the dome-shaped contact surface of the a line part and the contact surface of the extension of the other Conduit parts is present, either the seal as an annular gasket out is or the seal as an annular seal with a circular cross-section is formed, which rests in an annular recess in one of the contact surfaces.

Further Advantages and features of the invention will become apparent from the claims and from the description below, in the embodiments of the invention are explained in detail with reference to the drawings. Showing:

1 a first embodiment of the cable connection according to the invention with matched, dome-shaped contact surfaces and cross clamp;

2 an object of the 1 corresponding compound, wherein the clamp has one or more beads;

3 a further embodiment of the line connection according to the invention with a radially extending bead with dome-shaped contact surface of the first line part and conical contact surface of the other line part and cross-clamp;

4 an embodiment accordingly 3 , wherein the conical region of the other line part has a bead directed towards the dome-shaped contact surface of the first contact part.

5 an embodiment similar to that of 3 with a flat seal;

6 likewise an embodiment similar to that of 3 with a seal having a circular cross-section;

7 a further embodiment of the line connection according to the invention, similar to that of 3 , wherein the radial extension of the one tube is also formed dome-shaped on the side facing away from the other tube;

8th an embodiment similar to the 7 However, wherein the dome-shaped configuration of a connecting part is not solid, but designed as a profile;

9 a further embodiment of the invention with radial clearance;

10 an embodiment similar to that of 3 , wherein the conically angled bearing surface of the other line part is pressed annularly by a nose of the clamp;

11 an embodiment in which the tube is formed with a profiled dome and the connection conical;

12 an embodiment similar to that of 11 , in which the connection is provided with an inner dome.

The conduit connection according to the invention has two hollow tubular conduit parts to be connected to one another, a first conduit part 1 and a second conduit part 2 , on. The first line part 1 For example, may be formed on a housing, such as a motor housing, while the second conduit part 2 a continuation pipe is.

The line parts according to the invention all have at the two mutually facing ends of the parts 1 . 2 radial expansions 1.1 . 2.1 on top of a bell 3 overstretched and pressed against each other, so that the two parts 1 . 2 As a result, be held firmly together axially. In one embodiment of the 1 indicates the extension 1.1 of the first line part 1 at its the extension 2.1 of the second line part 2 facing end face a dome-shaped rounded contact surface 1.2 Rounding off, wherein the center M of the radius of curvature R on the axis A of the line part 1 lies. Furthermore, also in the embodiment of the 1 the extension 2.1 of the line part 2 one on the dome-shaped contact surface 1.2 adapted dome-shaped contour, wherein the center M 'of the radius R' of the contact surface 2.2 on the extension of the axis A 'of the line part 2 lies. In the inserted position of the two cables 1 . 2 the axes A, A 'match.

Due to the dome-shaped design of the plant surfaces 1.2 . 2.2 the extensions 1.1 . 2.1 can the pipe parts 1 . 2 to some extent occupy angular displacements in which the axes A, A 'no longer coincide or are aligned.

The extension 1.1 indicates at its the contact surface 1.2 side facing away from a conically tapered contact surface 1.3 for the clamp 3 up there with a thigh 3.2 is applied.

The above also applies essentially to the embodiment of 2 which essentially coincides with that of 1 coincides and in which only the clamp an annular or a plurality of punctiform beads 3.1 has, whereby the contact pressure is increased.

In the embodiment of 3 is just the extension 1.1 with a dome-shaped contact surface 1.2 provided while the flared terminal end 2.1 of the pipe 2 is substantially flared. Nevertheless, here too, the two parts of the line 1 . 2 due to the dome-shaped free contact surface 1.2 of the extension part 1.1 To a limited extent with angular positions of the axes A, A 'are interconnected.

The design of the 4 is essentially the same as the 3 match. Here is only on the conical extension of the line part 2 an annular bead 2.3 (For sealing reasons) provided on the dome-shaped contact surface 1.2 the extension 1.1 of the line part 1 is applied. This also allows a higher contact pressure and therefore a more reliable seal can be achieved.

The design of the 5 essentially corresponds to the 3 , apart from that between the extension 2.1 of the line part 2 and the extension 1.1 of the line part 1 an annular flat gasket 4.1 is arranged at the conical extension 2.1 of the line part 2 is applied.

The design of the 6 essentially corresponds to the 3 , although here in the free investment area 1.2 the extension 1.1 an annular recess 1.6 is formed, in which a ring seal 4.2 partially inserted with circular cross-section, which is attached to the conical extension 2.1 of the line part 2 attached, which by the clamp 3 against the ring seal 4.2 is pressed.

The design of the 7 essentially corresponds to the 3 with the modification that the rear bearing surface 1.3 the extension 1.1 here also dome-shaped, wherein the center M '' of the dome radius R '' is preferably on the extension of the axis A. This makes it the clamp 3 possible, in a way Angularversatz the axes A, A 'to be connected line parts 1 . 2 to follow.

In the embodiment of 8th correspond to the pipe parts 1 . 2 those of 7 , The outer contour of the extension 1.1 of the line part 1 is the same as in the 7 formed here, but not as a solid part, but as a profile-shaped extension 1.1 ,

In the embodiment of 9 corresponds to the formation of the line part 1 essentially the one of 3 , Also, the tube points 2 a cone-shaped extension 2.1 on, however, on their outside with an axis-parallel turn 2.4 is provided, which to the axial outer wall 1.4 the extension 1.1 has a certain radial play. The clamp 3 lies with a nose 3.5 at the end of her thigh 3.2 at the extension 1.1 opposite side of the extension 2.1 at.

In the embodiment of 10 is the free investment area 1.2 the extension 1.1 of the line part 1 again dome-shaped, while the back of the extension 1.1 as a cylinder wall 1.5 is formed. The extension 2.1 of the pipe part 2 could also be conical here, but is directed substantially radially. These deviations from the previous embodiments is the contour of the clamp 3 adapted to its on the cylinder wall 1.5 adjoining thigh 3.3 extends substantially radially inwardly while the leg 3.2 in the area of the pipe part 2 its extension 2.1 engages behind and with a nose 3.5 at the extension 2.1 attacks.

In the embodiment of 11 is deviating from the previous embodiments, the line part 2 with an extension 2.1 formed in the form of a torus. The extension 1.1 of the pipe 1 has one of the contact surface 2.2 the ring bead extension 2.1 facing concave conical face 1.2 on, on the contact surface 2.2 is applied. The opposite this back 1.3 the extension 1.1 is to the front 1.2 arranged in parallel. The clamp 3 overlaps with conical thighs 3.2 . 3.3 the two extensions 2.1 . 1.1 and squeeze the parts 1 . 2 so against each other.

In the embodiment of 12 is the free front 1.2 the extension 1.1 formed with an inner dome whose shape and radius of the profile-like extension 2.1 of the pipe 2 follows.

1

line part

1.1

extension

1.2

contact surface

1.3

backward side

1.4

outer wall

1.5

cylinder

1.6

annular recess

2

line part

2.1

extension

2.2

contact surface

2.3

Beading (the extension 2.1 )

2.4

axially parallel turn

3

clamp

3.1

Beading (the clamp 3 )

3.2

leg

3.3

leg

3.5

nose

4.1

gasket

4.2

annular seal

A, A '

axes

M, M ', M' '

Focus

R R ', R' '

radius

Claims (13)

Line connection between two line parts, wherein the line parts have radial extensions, which are overlapped by a profile clamp, whereby the line parts are pressed against each other, characterized in that at least one contact surface ( 1.2 . 2.2 ) of the extension ( 1.1 . 2.1 ) of a line part ( 1 . 2 ) has a dome-shaped contour. A line connection according to claim 1, characterized in that the center point (M, M ') of the radius (R, R') of the at least one dome-shaped bearing surface ( 1.2 . 2.2 ) on the axes (A, A ') and the extensions of the corresponding line part. Line connection according to claim 1 or 2, characterized in that an extension ( 1.1 ) with dome-shaped contact surface ( 1.2 ) is formed as a solid bead. Line connection according to one of the preceding claims, characterized in that an extension ( 1.2 . 2.2 ) with dome-shaped contact surface ( 1.1 . 2.1 ) is formed as a profiled pipe section. Cable connection according to one of the preceding claims, characterized in that the one convex dome-shaped contact surface ( 1.2 . 2.2 ) of a line part ( 1 . 2 ) facing contact surface ( 2.2 . 1.2 ) of the other line part ( 2 . 1 ) with one of the convex dome-shaped contact surface ( 2.2 . 1.2 ) is formed corresponding inner calotte. Cable connection according to one of the preceding claims, characterized in that the at the dome-shaped plant surface ( 1.2 . 2.2 ) of a line part ( 1 ) extension ( 2.1 . 1.1 ) of a second line part ( 2 ) is conically widening. Cable connection according to one of the preceding claims, characterized in that the extension ( 2.1 ) of a line part ( 2 ) with an annular bead ( 2.3 ) is trained. Cable connection according to one of the preceding claims, characterized in that the overarching clamp ( 3 ) extending over its circumference or distributes an annular, a plurality of punctiform or a plurality of part-annular beads ( 3.1 ) having. Cable connection according to one of the preceding claims, characterized in that the dome-shaped contact surface ( 1.2 . 2.2 ) facing away from the rear side ( 1.3 ) of the extension ( 1.1 ) of a line part ( 1 ) is tapered conical. Cable connection according to one of claims 1 to 8, characterized in that the dome-shaped contact surface ( 1.2 . 2.2 ) facing away from the rear side ( 1.3 ) of the extension ( 1.1 . 2.1 ) of a line part ( 1 . 2 ) is also formed dome-shaped. Cable connection according to one of the preceding claims, characterized by a seal between the dome-shaped contact surface ( 1.2 ) of a line part ( 1 ) and the contact surface ( 2.2 ) of the extension ( 2.1 ) of the other line part ( 2 ). Cable connection according to claim 11, characterized in that the seal as an annular flat gasket ( 4.1 ) is trained. Cable connection according to claim 11, characterized in that the seal as an annular seal ( 4.2 ) is formed with a circular cross-section, which in an annular recess in one of the plant surfaces ( 1.2 . 2.2 ) is present.