DE19503346C2 - Pipe component - Google Patents

Description

The invention relates to a tubular component for the end Fixing on a pipe, especially a gas pipe Plastic, according to the characteristics in the preamble of the An saying 1.

To connect pipelines with each other or the over gear on other pipeline components, such as wise house connection fittings, pipe branches or Redu ornaments, to enable, these end with equipped with a flange connection.

A common pipe connection, especially for gas pipes nets made of plastic pipes is from DE-PS 29 11 708 known. With this design there is a flange set in the respective pipe end while enlarging the Pressed in outside diameter of the tube. The flan set points in the outside of his cylindrical mare zens a variety of circumferential Grooves on. After the flange insert is inserted, a sleeve is deformed by deforming the pipe material  the pipe end pressed towards the flange insert. The tube material displaced by the sleeve is in the grooves of the flange insert are pressed and the Flange insert set.

The known construction has the disadvantage that the pipe material under high mechanical stress tends to flow away during the press-in process. As a result the required tightness is not always guaranteed will. It also comes from the press-in process in the tube size material to tensions under which the material strength suffers.

From DE-OS 26 26 302 a connector for Pipes, which is a metallic pipe component and comprises a part made of synthetic resin. The pipe component has a connection section and an adapter section on. The adapter section is in areas with towards open recesses. The synthetic resin partially encloses and forms the adapter section to attach a tubular connection area for a of the pipe. The synthetic resin is in the hardened state stood glassy-amorphous, insoluble and infusible. An on welding of plastic pipes by heating do not follow. The resin would burn NEN or the pipe end destroyed. A dense and span a smooth transition is not possible.

The invention is based on the prior art Task to create a pipe component, which a stress-free transition from pipe to pipe construction guaranteed and not susceptible to corrosion.

According to the invention, this object is achieved in those listed in the characterizing part of claim 1 Characteristics.  

Form further advantageous embodiments of the invention Subject matter of claims 2 to 17.

The core of the invention is the measure, the wall of the adapter section with recesses and the adapter section in a jacket made of a thermopla embedding plastic. The advantage is Polyethylene jacket. This becomes more practical Injected around the adapter section. This encloses the jacket sealing the adapter section. This prevents the penetration of moisture or a gas emerges from the network into the atmosphere.

To connect the jacket to the adapter section to improve the pipe component, at least one off Take as the wall of the adapter section on the ge Entire thickness penetrating recess can be designed.

The recesses provided in adapter sections can NEN be designed differently. In a simple one These are shaped by the wall of the adapter section penetrating holes made. These can rule moderate or irregular over the length and / or the um beginning of the adapter section can be arranged distributed. In principle, the recess is also conceivable to train like a labyrinth in order to define the man further improve on the adapter section.

In a preferred embodiment, at least one is you tion between the adapter section and the jacket structure.

The adapter section can have recesses in its outer Have surface to the contact or liability of the To promote coats. The jacket is so with the adapter  cut mortised. The same goal is achieved by exception in the inner surface of the nozzle.

An optimal definition of the jacket is by Ausneh in the outer and inner surface of the Adapter section reached. In this way, the Kon tact area between the jacket and the adapter section determined depending on the pipeline construction requirements will.

If high longitudinal or torsional forces are expected, it is as possible, the pipe component with a corresponding number of Ver Hooking or mortising options in the form of off equipments for the coat. In cooperation with the recesses is an axial and radial fix ensures the jacket, which both pull and also pressure loads in the axial direction of the tube as also resists torsion. That means, the jacket is both against occurring longitudinal forces also secured against torsional forces.

The pipe is connected to the jacket of the pipe component. The connection is non-positive and / or positive ensures a stress-free transition from pipe construction part on the pipe, the tightness of the connection ge is guaranteed. To weaken the material of the pipe it does not come.

The jacket expediently overlaps the tube end by one right measure. This overlap dimension ensures the secure and tight connection of the pipe to the jacket. In practice, there is an overlap measure, wel ches corresponds approximately to the jacket thickness.

Furthermore, the tubular component according to the invention is also sufficient highest requirements with regard to corrosion  protection, since contact of metallic components with the medium is largely prevented by the jacket becomes.

The thickness of the jacket is expedient in a double tube wall thickness executed. But there are also other coats thick possible.

An outer sheathing and an in nere sheathing of the adapter section is formed, wherein the recesses and / or recesses completely with the jacket material are filled so that the jacket hooked in the recesses. This ensures both a positive as well as a positive connection of the Jacket with the adapter section.

The coat provides an inner and outer coating of the Adapter section and ensures a good Kor protection against corrosion. A contact of the pumped in the pipe Medium with the connection section or the adapterab cut can be prevented in this way.

Connection section and adapter section as one component can be made of cast iron. Casting is inexpensive and has proven itself in use in pipeline construction.

In practice, the connection section can be a screw be over. For the transition to the next pipeline component, such as a steel tube, has the Screw connection via a connecting thread. This can it is an internal or an external thread.

In another embodiment, the connection from cut from a flange and the adapter section from formed a tubular nozzle.  

As already mentioned, the pipe component with its man tel on the pipe. Although different ver binding techniques are possible sees an advantageous Embodiment a welding connection, such as for example by mirror or socket welding. This connection technique is particularly favorable if the pipe is made of polyethylene.

It is possible to make the outer and inner recesses through recesses in the wall of the adapter section to manufacture. Here are, for example, checkerboard-like Deepening possible.

The outer and also the inner recesses can also be annular grooves running parallel to each other. These are easy to manufacture. A one or more of these ring grooves can also be used for mounting of seals.

It is also possible to use both the inner and the to form outer recesses as helical grooves.

An advantageous embodiment of the invention The basic idea is that at least one seal is on the outer surface of the adapter portion is. Two O-rings have proven to be useful.

The seals can be placed on the outer circumference of the Adap rest on the section and tightly span it so that they are embedded by the coat.

However, it can be used to secure the position of the seals to arrange them in ring grooves.

It is also possible to have at least one seal on the in neren surface of the adapter section. This  can also be embedded in the coat or in a Groove.

Another advantageous embodiment provides that on the inner and outer surface of the adap ter section each provided at least one seal is. This ensures that even if one Seal still provides adequate protection from you Moisture entry or a gas leak is.

A further developing the general idea of the invention Embodiment is seen in that the seal in one attached to the inside diameter of the adapter section fit ring is embedded. The ring is in the area of sealing opening on the connection side of the connection section inserted into the adapter section. This can be and / or non-positively, for example by gluing, he consequences. The coat is close to the ring. Before the ring also partially consists of polyethylene. The This can be done with the coat - for example in the mirror welding process - be connected.

Because the seal in the welded ring additionally by no spirals or channels in the adap is relieved, this seal ensures the tightness of the pipe component even if one of the arranged on the outer periphery of the adapter section Seals would fail.

Basically, it is also possible to use one or more Seals in grooves in the connection area of the Adap to accommodate the interior section and by means of to fix a ring. The ring is then again with connected to the coat.  

At the connection section and / or at the adapter section additional abutments in the form of elevations or recesses Fungments are provided, which the sheathing of the Adap easier and a supplementary fixation of the coat. This can be done ring-shaped or segment-like elevations or Act deepening.

In practice there is an option in the connection section provide annular receiving groove. This is when opening spray the jacket with the plastic material fills. This summarizes the connection-side end of the jacket in the receiving groove. With this embodiment, the Fact that art material of the jacket after spraying in a certain Shrinking volume. Because that grips the connection-side end of the jacket into the receiving groove, there is also a sealing transition between the man tel and the connection or adapter section reached.

Furthermore, an annular collar can be provided on the connection section hen be, which one after the coating process is rolled and thus ensures that the gap between Connection element and jacket is pushed away. To this Additional sealing is provided. Farther the corrosion in the transition area from the jacket to the Connection section suppressed.

The invention is based on in the drawings gene described embodiments described in more detail ben. Show it:

Fig. 1 is a vertical longitudinal section through a pipe connected to a pipe member;

Fig. 2 is a tube member having an inner ring and these sealing of inserted;

Figure 3 also in vertical longitudinal section a tubular component with recesses in the inner surface of the socket.

Figure 4 is the representation of the flange with angeglie derstutzen of Fig. 3.

Fig. 5 is a vertical longitudinal section a pipe member having recesses in the outer and in the inner surface of the sleeve;

Fig. 6 is the representation of the flange and the Stut zens of Fig. 5;

FIG. 7 is a side view of the representation of FIG. 6 along the line AD;

Fig. 8 is an enlarged representation of the detail X of FIG. 6;

Fig. 9 in section a detail of figure 7 along the line EE.

FIG. 10 is also a vertical longitudinal section another embodiment of a tubular member;

Fig. 11 again in vertical longitudinal section from an imple mentation form of a tubular component;

Fig. 12 shows another embodiment of a pipe construction part;

Fig. 13 in vertical longitudinal section an embodiment of a tubular component with screw connection;

FIG. 14 shows an enlarged view of section Y of FIG. 13;

Fig. 15 also in vertical longitudinal section a further embodiment of a tubular component with screw connection and

Fig. 16 in vertical longitudinal section of a pipe member with welding technology transition to the next pipeline component.

Fig. 1 shows a pipe part 1, which is the end attached to a pipe 2 made of polyethylene. The pipe component 1 comprises a connecting portion in the form of a flange 3 and an adapter section attached thereto in the form of a tubular connecting piece 4 , which is embedded in a jacket 5 , which is also made of polyethylene.

The flange 3 with its nozzle 4 is made of cast iron. In the sleeve 4 are distributed over the circumference of the connecting piece 4 recesses 6, 6 are arranged '. These break through the wall of the nozzle 4 over its entire thickness D _A.

The recesses 6 , 6 'are filled with the material of the jacket 5 . In this way, the jacket 5 is non-positively and positively connected to the nozzle 4 .

On the outer surface 7 and on the inner surface 8 of the nozzle 4 , the jacket 5 lies close to the nozzle 4 and thus forms an outer coating 9 and an inner coating 10 , which ensure good corrosion protection.

A seal in the form of an O-ring 12 is arranged on the flange-side opening 11 of the connector 4 . The O-ring 12 is received by a groove 13 in the inner surface 7 and is firmly enclosed by the jacket 5 .

Furthermore, two O-rings 14 , 15 are known in FIG. 1. These lie in mutually parallel annular grooves 16, 17 of the nozzle. 4

The O-rings 14 , 15 are arranged in a length section 18 of the connector 4 , which lies between the flange 3 and the beginning of the first recesses 6 '. In this way, gas circulations between the jacket 5 and the nozzle 4 or the flange 3 can be prevented.

At the output end 19 of the pipe component 1 , the pipe 2 is connected to the jacket 5 by welding. The jacket 5 has a step 21 in this area and overlaps the tube end 20 by a dimension U. The overlap dimension U corresponds to at least twice the tube wall thickness S.

The thickness D _{1 of} the jacket 5 is at least double the tube wall thickness S.

Furthermore, the center lines 124 of holes (not shown) in the flange 3 are indicated in FIG. 1, via which the coupling of the individual pipes in a pipe network or the transition to other pipe components takes place.

In FIG. 2, a tubular member 22 is illustrated, embedded in which a seal 23 in a groove 24 of an inner ring 25. The inner ring 25 is inserted at the flanschsei term opening 26 of the nozzle 27 in this. With the jacket 28 , the inner ring 25 made of polyethylene is welded. Even if the seals 29, 30 on the outer surface 31 of the sleeve 27 would turn, ensures the tightness of the seal 23, the casing 28 opposite the socket 27th

Otherwise, the tubular component 22 according to FIG. 2 is constructed like the tubular component 1 of FIG. 1.

The tubular component 32 of FIG. 3 has a socket 33 with recesses 34 , which has in its inner surface 35 parallel annular grooves 36 (see also FIG. 4).

The sealing of the jacket 37 with respect to the socket 33 is carried out here by the material of the jacket 37 itself. This fills the annular grooves 36 and thus forms a la byrinth-like seal.

The pipe 38 is glued to the jacket 37 , here too an overlap dimension U _{1 is} maintained, which ensures a material-appropriate transition from the jacket 37 to the pipe 38 , so that a secure and intimate, stress-free connection is achieved.

The flange-side opening 39 of the connecting piece 33 is chamfered relative to the central longitudinal axis L by an angle α of 10 °, so that the opening 39 enlarges slightly outwards. This measure makes the incorporation of intermediate rings easier and also a coupling process is easier.

In the region of the opening 39 on the flange, the flange 40 has a stop 41 . On the inside of the stop 41 , the jacket 37 comes into sealing contact with the system.

The outer surface 42 of the connecting piece 33 is inclined away from the flange 40 towards the central longitudinal axis L by an angle β of 3 °.

From Fig. 5, a tube member 43 in turn shows a flange 44 and an associated thereto Stut zen 45th The nozzle 45 has cutouts 46 distributed over its circumference (cf. FIGS. 6 and 7). Both in the inner surface 47 and in the outer surface 48 of the nozzle 45 recesses 49 and 50 are hen vorgese. The recesses 46 and also the recesses 49 , 50 are completely filled by the jacket 51 .

On the side of the nozzle 45 facing away from the flange, two O-rings 52 , 53 are placed in ring grooves 54 , 55 in its outer surface 48 . These ensure the tightness of the jacket 51 with respect to the nozzle 45 .

The jacket 51 forms an outer coating 56 and an inner coating 57 of the connector 45 . The inner loading 57 closes flush with the flange opening 58 . The outer coating 56 lies tightly in the region of the transition 59 from the flange 44 to the nozzle 45 .

The tube 60 is welded to the jacket 51 in a manner which ensures a tension-free and tight transition. For this purpose, the jacket 51 and the tube 60 overlap by a dimension U ₂ , which corresponds to at least twice the tube wall thickness S. The jacket 51 also has at least a thickness D ₂ of twice the tube wall thickness S.

The inside diameter I _{R of} the tube 60 and the inside diameter I _M of the tube component 43 correspond to one another, so that a flush, turbulence-free transition from the tube component 43 to the tube 60 is ensured.

FIGS. 6 and 7 show the flange 44 and the nozzle 45 of the tubular member 43 of Fig. 5.

In particular, from Fig. 6 it can be seen that the nozzle 45 through the inner recesses 49 and the outer recesses 50 in section has a wavy configuration (see also Fig. 8 with the detail representation X of FIG. 6).

The recesses 49 , 50 are formed by annular grooves which merge into one another via curved longitudinal sections 61 . The groove opening N _Ö is slightly wider than the groove deepest N _T. Between the individual recesses 49 are areas 125 which have such a dimension N _B that between the recesses 49 in the inner surface 47 and the recesses 50 in the outer surface 48 in the area marked W in FIG sufficient wall thickness of the nozzle, it remains.

FIG. 7 shows a section through FIG. 6 along the line AD.

The arrangement of the cutouts 46 in the connecting piece 45 can be seen from this.

In the exemplary embodiment, they are marked with γ th angle 25.5 °, the angle δ 70.5 °, the angle ϕ 22.5 ° and the angles µ 45 °.

Furthermore, it can be seen in Fig. 7 that in the flange on a pitch circle offset by the angle µ eight holes 62 are arranged gene (see also Fig. 9). Via the holes 62 , the flange 44 can be screwed by means of bolts to a next flange or other pipe line components.

Fig. 10 shows an embodiment of a pipe construction part 63 with a flange 64 and a union 65. The nozzle 65 is broken through by cutouts 66 . Further out there are recesses 67 and 68 in the outer surface 69 and the inner surface 70 of the connector 65, respectively. A jacket 71 made of polyethylene surrounds the nozzle 65 tightly.

An abutment 72 is formed on the flange 64 . The Wi derlager 72 serves as a stop for the jacket 71 and un supports the connection of the jacket 71 with the nozzle 65 and the flange 64th Furthermore, the abutment 71 acts as a guide during the molding process of the Stut zens 65 with the jacket 71st

In the outer surface 69 two seals 73 are embedded.

In the area of the flange-side opening 74 of the nozzle 65 is 65 is arranged a Watched ring to the inner diameter I _S of the nozzle 75 of polyethylene. The ring 75 forms a sealing seat for two seals 76 , which are incorporated in ring grooves 77 of the flange 74 .

With the tube 78 made of polyethylene, the jacket 71 is again connected by welding. In the Ausführungsbei FIG game. 10 is the amount of overlap U ₃ at least three times as large as the wall thickness of the pipe S 78th The ratio of the inner diameter I _D to the outer diameter I _A is greater than or equal to 1: 1.5. The jacket thickness D ₃ be at least twice the tube wall thickness S at the marked point.

In the embodiment of FIG. 11, a seal 79 is embedded in a ring 80 . The ring 80 is adapted to the inner diameter I _{D1 of} the flange 81 or the connecting piece 82 and forms a sealing seat for the seal 79 . The ring 80 is firmly welded to the jacket 83 made of polyethylene. Characterized in that the seal 79 is firmly enclosed on all sides, and is relieved by no channels or derglei chen, the tightness of the jacket 83 ge compared to the nozzle 82 even in the event of a failure of the lines 84 , which zens in the outer surface 85 of the Stut 82 are provided.

Further, 11 the recesses 86 and the inner recesses 87 and the outer recesses 88 are visible in the FIG., Which are completely filled during encapsulation of the connecting piece 82 with polyethylene. In this way, the jacket 83 is fixed both axially and radially.

At the end, a gas pipe 89 is in turn welded to the jacket 83 .

The tubular component 90 shown in FIG. 12 speaks largely the tubular component 63 of FIG. 10. The connecting section is also formed here by a flange 91 ge. An annular receiving groove 92 is present in the flange 91 . Furthermore, the flange 91 has an abutment in the form of an annular collar 93 . The connection-side end 94 of the jacket 95 fits into the receiving groove 92 . The ring collar 93 can be rolled up after the injection process of the man 95 . That is, it is bent in the direction of the central longitudinal axis L of the tubular component 90 . In this way, the gap in the transition region between the sheath 95 and flange 91 is minimized. Furthermore, an additional sealing effect is achieved, so that corrosion in the transition area is also suppressed.

From Fig. 13, a pipe member 96 is shown with a terminal portion in the form of a screw terminal 97th The adapter connection 98 connects to the screw connection 97 . The adapter connection 98 is broken through by cutouts 99 . Furthermore, the adapter connection 98 from recesses 100 , 101 in its outer and inner upper surface. The recesses 99 and the recesses 100 , 101 are filled out of the plastic material of the jacket 102 .

The screw connection 97 has a receiving groove 103 . The connection-side end 104 of the jacket 102 engages in this and is fixed by means of an annular collar 105 (see also FIG. 14). It can also be seen here that the recess 100 'is undercut, whereby an additional abutment effect is achieved.

In the screw terminal 97 , a ring 106 is arranged inside. This includes two O-rings 107 , which are in the ring grooves 108 of the screw connection 197 .

On the connection side, the screw connection 97 has a connecting thread 109 with which the connection to a steel tube 110 can be made. For this purpose, the steel tube 110 has a corresponding external thread 111 .

The pipe components 112 and 113 shown in FIGS . 15 and 16 correspond in principle to the embodiment of the pipe component 96 , as shown in FIG. 13.

However, the pipe component 112 has a screw connection 114 with an adapter head 115 and a threaded part 116 . The threaded part 116 is provided with an external thread 117 , via which the coupling to a steel tube 118 with a corresponding internal thread 119 takes place.

The pipe component 113 of FIG. 16 has a stepped adapter head 120 with a step 121 which is fitted onto the steel pipe 122 to be connected to the pipe component 113 . As a result, a nozzle-shaped welding ring 123 is formed on the adapter head 120 . The steel pipe 122 is connected to the pipe component 113 by welding.

Reference list

1

Pipe component

2nd

pipe

3rd

flange

4th

Support

5

coat

6

Recess

6 '

Recess

7

outer surface of

4th

8th

inner surface of

4th

9

outer coating of

4th

10th

inner coating of

4th

11

Opening of

4th

12th

O-ring

13

Ring groove

14

O-ring

15

O-ring

16

Groove

17th

Groove

18th

Longitude of

4th

19th

End of

1

20th

Pipe end

21

step

22

Pipe component

23

poetry

24th

Groove

25th

Inner ring

26

flange-side opening

27

Support

28

coat

29

poetry

30th

poetry

31

outer surface

32

Pipe component

33

Support

34

Recess

35

inner surface of

33

36

Ring groove

37

coat

38

pipe

39

opening

40

flange

41

attack

42

outer surface

43

Pipe component

44

flange

45

Support

46

Recess

47

inner surface

48

outer surface

49

Recess

50

Recess

51

coat

52

O-ring

53

O-ring

54

Ring groove

55

Ring groove

56

outer coating

57

inner coating

58

Flange opening

59

Transition area from

44

on

45

60

pipe

61

Length section

62

drilling

63

Pipe component

64

flange

65

Support

66

Recess

67

Recess

68

Recess

69

outer surface

70

inner surface

71

coat

72

Abutment

73

poetry

74

Opening of

65

75

ring

76

Seals

77

Ring grooves in

64

78

pipe

79

poetry

80

ring

81

flange

82

Support

83

coat

84

Seals

85

outer surface

86

Recesses

87

Recess inside

88

Recess outside

89

pipe

90

Pipe component

91

flange

92

Groove

93

Ring collar

94

connection end of

95

95

coat

96

Pipe component

97

Screw connection

98

Adapter connection

99

Recesses

100

Recesses

100

'Recess

101

Recesses

102

coat

103

Groove

104

End of

102

105

Ring collar

106

ring

107

O-ring

108

Ring groove

109

Connecting thread

110

Steel tube

111

External thread

112

Pipe component

113

Pipe component

114

Screw connection

115

Adapter head

116

Threaded part

117

External thread

118

Steel tube

119

inner thread

120

Adapter head

121

step

122

Steel tube

123

Welding ring

124

Center line

125

Area
I _R

Inside diameter of

60

I _M

Inside diameter of

43

I _D

Inside diameter of

63

I _D

1 inside diameter of

82

I _S

Inside diameter of

65

I _A

outer diameter
U

1 overlap dimension
U

2 dimension of overlap
U

3 overlap dimension
S pipe wall thickness
D _A

Thickness of

4th

D

1 thickness of

5

D

2 thickness of

51

D

3 thickness
L central longitudinal axis
α angle
β angle
γ angle
δ angle
ϕ angle
µ angle
_Nope

Slot opening
N _T

Groove depth
W wall thickness of

45

N _B

axial length of

125

Claims (17)

1. Pipe component for fixing at the end of a pipe ( 2 , 38 , 60 , 78 , 89 ), in particular a plastic gas pipe, which has a connecting section ( 3 , 40 , 44 , 64 , 81 , 91 , 97 , 114 , 120 ) and has a tubular adapter section ( 4 , 27 , 33 , 45 , 65 , 82 , 98 ), the wall of the adapter section ( 4 , 27 , 33 , 45 , 65 , 82 , 98 ) partially with recesses ( 36 , 49 , 50 , 67 , 68 , 87 , 88 , 100 , 101 ), characterized in that the adapter section ( 4 , 27 , 33 , 45 , 65 , 82 , 98 ) seals into a tube ( 2 , 38 , 60 , 78 ) connectable sprayed-on jacket ( 5 , 28 , 37 , 51 , 71 , 83 , 95 , 102 ) made of thermoplastic material and at least one recess as the wall of the adapter section ( 4 , 27 , 33 , 45 , 65 , 82 , 98 ) on the entire thickness (D _A ) penetrating recess ( 6 , 6 ', 34 , 46 , 66 , 86 , 99 ) is designed. 2. Pipe component according to claim 1, characterized in that the adapter section ( 4 , 27 , 45 , 65 , 82 , 98 ) including at least one seal ( 12 , 14 , 15 , 23 , 29 , 30 , 52 , 53 , 73 , 76 , 79 , 84 , 107 ) is embedded in the jacket ( 5 , 28 , 51 , 71 , 83 , 95 , 102 ). 3. Pipe component according to claim 1 or 2, characterized in that the adapter section ( 45 , 65 , 82 ) has recesses ( 50 , 67 , 88 , 100 ) in its outer surface ( 48 , 69 , 85 ). 4. Pipe component according to claim 1 or 2, characterized in that the adapter section ( 33 , 45 , 65 , 82 ) has recesses ( 36 , 49 , 68 , 87 , 101 ) in its inner surface ( 35 , 47 , 70 ). 5. Pipe component according to claim 1 or 2, characterized in that the adapter section ( 45 , 65 , 82 ) recesses ( 49 , 50 , 67 , 68 , 87 , 88 , 100 , 101 ) in its outer surface ( 48 , 69 , 85 ) and in its inner surface ( 36 , 49 , 68 , 87 ). 6. Pipe component according to one of claims 1 to 5, characterized in that at least one seal ( 14 , 15 , 29 , 30 , 52 , 53 , 73 , 84 ) on the outer surface ( 7 , 31 , 48 , 69 , 85 ) of the adapter section ( 4 , 27 , 45 , 65 , 82 ) is provided. 7. Pipe component according to one of claims 1 to 5, characterized in that at least one seal ( 12 , 23 , 76 , 79 , 107 ) on the inner surface ( 8 , 70 ) of the adapter section ( 4 , 27 , 65 , 82 , 98 ) is provided. 8. Pipe component according to one of claims 1 to 5, characterized in that on the inner surface 8 , 70 ) and on the outer surface ( 7 , 31 , 69 , 85 ) of the adapter section ( 4 , 27 , 65 , 82 ) in each case at least a seal ( 12 , 14 , 15 , 23 , 29 , 30 , 73 , 76 , 79 , 84 ) is provided. 9. Pipe component according to one of claims 7 or 8, characterized in that the seal ( 13 , 76 , 79 ) in a to the inner diameter of the adapter section ( 27 , 65 , 82 ) adapted ring ( 25 , 75 , 80 , 106 ) is embedded, which in the area of the connection-side opening ( 26 , 74 ) of the connection section ( 27 , 65 , 82 ) is sealed in this and inserted with the jacket ( 28 , 71 , 83 , 102 ). 10. Pipe component according to one of claims 1 to 9, characterized in that the outer and / or inner recesses ( 36 , 49 , 50 , 67 , 68 , 87 , 88 ) are mutually parallel ring grooves. 11. Pipe component according to one of claims 1 to 9, characterized in that the outer and / or inner recesses as helical grooves are formed. 12. Pipe component according to one of claims 1 to 9, characterized in that the outer and / or inner recesses as chess board-like depressions are formed. 13. Pipe component according to one of claims 1 to 12, characterized in that the jacket ( 5 , 28 , 37 , 51 , 71 , 83 , 95 , 102 ) with the tube ( 2 , 38 , 60 , 78 , 89 ) connected by welding is. 14. Pipe component according to one of claims 1 to 13, characterized in that the connecting section ( 97 , 114 ) has a Verbindungsge thread ( 109 , 117 ). 15. Pipe component according to one of claims 1 to 14, characterized in that the connecting section is a flange ( 3 , 40 , 44 , 64 , 81 , 91 ) and the adapter section is a socket ( 4 , 27 , 33 , 45 , 65 , 82 ) is. 16. Pipe component according to one of claims 1 to 15, characterized in that the connecting section ( 91 , 97 ) has an annular receiving groove ( 92 , 103 ) for the connection-side end ( 94 , 104 ) of the jacket. 17. Pipe component according to one of claims 1 to 16, characterized in that the connecting section ( 64 , 91 , 97 , 114 , 120 ) has a Wi derlager ( 72 , 93 , 105 ) for the jacket ( 71 , 95 , 102 ) .