DE202005005016U1 - Pipe joint system with a pipe connector - Google Patents

Abstract

Tube connection system (1) with a pipe connector (2), a supply pipe (3) and a branch pipe (4), wherein the pipe connector (2) has a curved saddle (5) and a Pipe socket (6) surrounded by the saddle (5) and in the center (7) of the saddle (5) is arranged, wherein the curvature (8) of the saddle (5) to the contour (9) of the supply pipe (3) and the Pipe neck (6) adapted to the diameter (d) of the branch pipe (4) and is connected medium-tight with the surrounding saddle material and wherein the saddle (5) has a heating coil (10), which in a Saddle material is embedded and two electrical connection elements (11 and 12) for a detachable power supply in the edge region (13) of the saddle (5).

Description

The The invention relates to a composite pipe system with a pipe connector, a supply pipe and a branch pipe. The pipe connector points for this Pipe system a curved Saddle and a tube approach, which surrounded by the saddle and is arranged in the center of the saddle. The curvature of the Saddle is adapted to the contour of the supply pipe, and the pipe socket is adapted to the diameter of the branch pipe. Furthermore, the Saddle of the pipe connector connected to the pipe socket media-tight.

Tube composite systems with pipe connectors, which is a supply pipe with a branch pipe connect, usually use one on an opening welded to the supply pipe Pipe neck that over Pipe connecting means, such as sealing elements and sleeves, with the branch pipe solvable and is connected medium-tight. If dispensed with the solubility can, then in such piping systems, the branch pipe directly, without the interposition of a pipe connector, on an opening of the Supply pipe welded medium-tight.

such Pipe joint systems, however, have as a weak point the transition from the supply pipe to the branch pipe, since this point, in particular when firmly welded is leaking and / or brittle and repairs may be required. Another Problem with supply pipes is to install later branch pipes, if, for example, a fresh water supply line via a Branch pipe is to be connected with a new or additional household. The same problems occur in the Abwasserent supply, in the new plots to be connected to a central sewage collection pipe via branch pipes.

at These applications have the need, either an old pipe connection in the composite pipe system, or a new pipe joint for a To create pipe system. This need also applies the attachment of a pipe connector in the composite pipe system, the later can be used from the inside when a break occurred is, or if the composite pipe system from the outside is not accessible, or a cuff on the endangered Place from the outside is applied, if by appropriate exposure of the composite pipe system the Junction accessible is.

task The invention is a pipe joint system with a pipe connector to meet the above need, and opens the possibility to both mounted from the inside in a branch area of the composite pipe system to be, as well as from the outside to complete such a composite pipe system.

These Task is with the independent claim 1 solved. Advantageous developments of the invention will become apparent from the dependent Protection claims.

According to the invention is a Pipe connector or a composite pipe system with a pipe connector created, which has a supply pipe and a branch pipe. The pipe connector has a curved saddle and a pipe socket on. The pipe socket is surrounded by the saddle and in the center of the saddle arranged. The curvature of the saddle is adapted to the contour of the supply pipe and the pipe socket is adapted to the diameter of the branch pipe. Furthermore, pipe socket and saddle are connected medium-tight over the saddle material. The saddle of this pipe connector has a heating coil, the embedded in a saddle material and the two electrical connection elements for one detachable power supply has in the edge region of the saddle.

One Such pipe connector or such a composite pipe system with a pipe connector has the advantage that it is extremely flexible. The pipe connector With his saddle can both from the inside into a supply line be used, for example, a break point between the supply pipe and branch pipe later But it can also be applied from the outside to a to create a new branch connection. Furthermore, it is possible the Insert pipe connector from the inside and the pipe socket from an opening of the To protrude supply pipe, then the pipe assembly system complete by applying a branch pipe.

Of the special advantage of this pipe connector or pipe system It is that the saddle has a heating coil, so that the surface of the Saddle, the curvature the supply pipe is adapted by the heating coil in such a way heated can be that the saddle material softens and a cohesive contour true Connection with the supply pipe is received. Thus, the pipe connector or the composite pipe system advantageously the possibility on, a medium-tight connection between the saddle and the supply pipe, both in outdoor installation, as also to provide for indoor mounting and a pipe socket available too either completely rebuild an existing branch pipe seals, or allows, that a new branch pipe slidable on the pipe socket placed and sealed.

One particular aspect of the invention relates to a pipe connector, the a curved one Saddle and has a pipe socket. The pipe socket is of the Saddle surrounded and preferably arranged in the center of the saddle. The curvature the saddle is adapted to the contour of a supply pipe or can be adapted to it and the pipe socket is to the diameter adapted to a branch pipe. Furthermore, the pipe socket and saddle are media-tight over the Saddle material connected. The saddle of this pipe connector points a Heizwendel which is embedded in a saddle material and the two electrical connection elements for a separable power supply in Having edge region of the saddle.

In a preferred embodiment the invention is for an internal assembly the curvature of the Saddle of the inner contour of the supply pipe and the outer diameter the tube approach the inner diameter of the branch pipe slidable customized. This is advantageously made possible by means of an internal assembly to create a pipe socket that goes over the saddle and over one cohesive Connection in the area of the heating coil of the saddle with the supply line medium-tight connected, so the transition to a branch pipe media density is provided, or on the approach a new branch pipe is placed.

A another alternative embodiment of the Invention looks for an outdoor installation before that the curvature the saddle of the outer contour the supply pipe is adjusted while the inner diameter of the pipe socket to the outer diameter the branch pipe is slidably associated. In this case is the saddle of the pipe connector cohesively with the outside connected to the supply pipe, and after the heating coil activated was, and the pipe socket surrounds the branch pipe from the outside.

Around To create a secure compound, it is advantageous if the material to be connected to the saddle of the supply pipe the same thing as the material of the pipe connector. For this The purpose is advantageously to use the materials polyethylene (PE), Polypropylene (PP) or Polyvenyldifluorid (PVDF) used. These Materials have the advantage of having thermoplastic properties exhibit and when heated a sticky surface form, with the under contact pressure, a media-tight and cohesive connection of the saddle surface in the area of the heating coil with the inner or outer surface of the Supply pipe can be created.

In a further embodiment The invention relates to the supply pipe and / or the branch pipe a PE-HD material on. This cured polyethylene has the advantage a high dimensional stability and yet has thermoplastic properties such that it easily welded to the heated saddle of the pipe connector cohesively.

Preferably the pipe joint system has a supply pipe consisting of a Composite tube is made, wherein the composite tube an outer protective sheath and an inner tube made of PE-HD. In this case it is from Advantage to perform an internal assembly of the saddle, since the inner tube in his thermoplastic properties corresponds to the heatable saddle.

has a supply pipe a circular or oval cross section, so the curvature of the saddle of the pipe connector be adapted in each case. This means, that the pipe connector is not only used for round supply pipes can be, but also for oval cross sections is suitable.

Preferably, the supply pipe axis and the branch pipe axis at a standard angle. These standardized angles are defined in the German Industrial Standards, in order to limit the variety of possible fittings for such composite pipe systems. In a further embodiment of the invention, a round supply pipe profile has an inner diameter D between 150 mm ≦ D ≦ 1500 mm and preferably between 200 mm ≦ D ≦ 1000 mm. Furthermore, an oval supply pipe, an inner extension DN in a range between
555/750 mm DN 900/1350 mm
exhibit.

Matching to these supply pipe sizes, the branch pipes have an inner diameter d between them
50 mm d 250 mm,
and preferably between 80 mm d 200 mm.

The Material of the saddle of the pipe connector is embedded in the area Heating coil with the material of the connecting pipe in the mounted Condition media-tight and materially connected. This media density and cohesive Connection can be achieved even if the saddle is not from the outside the supply pipe is applied, but by a vending machine is also used from the inside. The heating coil itself points to it an embedded in the material of the saddle heating wire. This heating wire can be coated with polyethylene, polypropylene and / or polyvinyl difluoride be before it is embedded in the material of the saddle.

Furthermore, it is provided that the Rohran set of the pipe connector has an annular bead or recess for receiving a sealing element, wherein the bead is embossed for internal mounting in the outer shell and for external mounting in the inner wall of the pipe socket. This has the advantage that a corresponding sealing element such as an O-ring for a slidable seal between the pipe socket and the branch pipe can provide.

Instead of Such sealing elements can also be the saddle and / or the pipe socket a coating of a bonding agent, preferably a thermoplastic, have, wherein this adhesion promoter on the supply pipe or the branch pipe facing surface of the pipe connector arranged is. Such a bonding agent, in particular of a thermoplastic, facilitates medium-tight joining between the supply pipe and the saddle of the pipe connector.

at a further preferred embodiment invention, the saddle and / or the pipe socket can be a sealing and / or compensating material to the supply pipe or to the branch pipe out of natural or synthetic fabric or knitted fabric. such knitted or woven plastic or natural gaskets on the branch pipe have the advantage that a large-area sealing can be done, in contrast to the above-mentioned O-ring seal.

In a further preferred embodiment the pipe connector or the composite pipe system has at least one Temperature measuring sensor in the saddle material for monitoring the integral connection process between saddle and supply pipe material. Such temperature measuring sensors are preferably made of thermocouples, which are inexpensive with their thin leads wires and easily embedded in the plastic of the saddle material I can.

Preferably the pipe connector is a one-piece Injection molded part, leaving the saddle and pipe socket in an injection molding process can be produced. Another embodiment of the pipe connector looks a one-piece, machined Part before. In this case, the pipe connector is made of a solid material produced.

Thereby is according to a preferred application the possibility created, for example, pipe connector in a supply pipe by means of a robotic vehicle on a transport element to the to be rehabilitated household connection to transport. At the to be rehabilitated Domestic connection is then by means of compressed air on the flexible transport element The inner saddle of the pipe connector is positioned so that the inner saddle for welding is pressed against the supply pipe inside. In this position the flexible transport element remains until the welding by means of Current flow through the heating coil of the inner saddle is completed.

To the welding and the refurbishment of the inlet drives the robot with the transport element in the initial position, i. usually back to the starting shaft of a composite pipe system, and the Pipe connector now remains in cohesive welded state with the supply pipe in the position of the branch of the pipe joint system.

Consequently can in this particular application of the pipe connector with a Inner caliper connecting household connection ducts to main or secondary collectors made of a PE-HD material. The inner pipe connector can thus advantageously in a trenchless installation process using special robotic vehicles in combination with the transport element and any video surveillance to be assembled.

The The invention will now be described with reference to the accompanying figures.

1 shows a schematic cross section through a composite pipe system, according to the invention;

2 shows a schematic longitudinal section through a composite pipe system, according to 1 ;

3 shows a schematic plan view of a pipe connector according to the invention;

4 shows a schematic perspective view of the pipe connector, according to 3 ;

5 shows a schematic longitudinal section through a pipe connector, according to 4 ;

6 shows a schematic cross section through a pipe connector, according to 5 ;

7 shows a schematic plan view of a pipe connector, according to 6 ,

1 shows a schematic cross section through a composite pipe system 1 , an embodiment of the invention. In this embodiment of the invention is an internal assembly, wherein in the supply pipe 3 with an inner diameter D via a machine, a pipe connector according to the invention 2 in a circular opening 24 of the supply pipe 3 is installed. Out of the opening 24 protrudes a pipe socket 6 of the pipe connector 2 out, on which a branch pipe 4 is attached. This is indicated by the pipe socket 6 a ring shaped bead 19 on, in which a sealing element 20 in the form of an O-ring is inserted. The pipe approach 6 has this bead 19 on his outer coat 21 on, which has a diameter d.

This diameter d of the pipe socket 6 is smaller than the inner diameter D of the supply pipe 3 , The pipe connector 2 has a curvature 8th on that to the contour 9 of the supply pipe 3 is adjusted. This curvature 8th belongs to a saddle 5 of the pipe connector 2 in which a heating coil 10 is integrated, with heating wires 18 in the material of the saddle 5 are embedded. By heating the saddle 5 with the help of the heating coil 10 becomes a media-tight and cohesive connection between the curvature 8th of the saddle 5 and the inner contour 14 of the supply pipe 3 created. The outer contour 15 of the supply pipe 3 can be covered in this interior assembly of soil without it interferes with the construction of the composite pipe system. The center 7 of the saddle 5 simultaneously forms the center or the axis 17 of the branch pipe 4 , It is worth noting that the inner wall 22 of the pipe socket 6 of the pipe connector 2 is completely smooth, so the media flow is not essential due to the installation of the sealing pipe connector 2 in the pipe system 1 is disturbed.

2 shows a schematic longitudinal section through a composite pipe system 1 , of the 1 , In this embodiment of the invention, the axis stands 17 of the pipe socket 6 perpendicular to the axis 16 of the supply pipe 3 , so that an angle α = 90 ° results between the tube axes. In this embodiment of the invention, the diameter D of the supply pipe 3 355 mm with a wall thickness w of the supply pipe 3 of about 20 mm. The opening 24 in the supply pipe 3 corresponds in its diameter to the outer diameter d of 125 mm of the pipe socket 6 , The pipe approach 6 goes in the area of the inner wall of the supply pipe 3 in the saddle 5 over, with the pipe socket 6 and the saddle 5 the one-piece pipe connector 2 form, which is produced by injection molding for this embodiment of the invention.

The thickness z of the saddle 5 is about 2 mm, with the saddle 5 on a width b of 40 mm the heating coil 10 having, at a distance of about 35 mm to the opening 24 is arranged. The lateral extent 1 of the saddle 5 is about 80 mm and the total diameter k of the saddle 5 is in this embodiment of the invention 285 mm. Thus, the saddle seals 5 large area the inner contour 14 of the supply pipe 3 opposite the supply media in the area of the heating coil 10 from.

3 shows a schematic plan view of a pipe connector 2 according to the invention. This pipe connector 2 is ring-shaped, and has a saddle 5 with an outer wreath, passing through a heating coil 10 is occupied. This heating coil 10 consists of heating wires 18 that over the electrical connection elements 11 and 12 can be supplied with electricity.

Another inner ring of the saddle, which has a width of about 35 mm, ensures that the heater is a sufficient distance from the opening 24 , of the supply pipe, not shown here, complies. Through the opening 24 extends the pipe socket 6 with his outer coat 21 and its inner wall 22 , The pipe approach 6 is in the center 7 of the saddle 5 arranged so that the axis 17 of the branch pipe, which is on the pipe socket 6 can be set, coincides with this center.

4 shows a schematic, perspective view of the pipe connector 2 , according to 3 , In this perspective view it becomes clear that the saddle 5 with its curvature 8th can lean against the contour of the supply pipe. In contrast to the previous embodiments of the invention, the tube approach shown here 6 no annular bead, which can accommodate an O-ring, but has a sealing and / or compensation material 25 made of natural or synthetic fabric or knitted fabric, and the pipe socket 6 completely surrounds. On the saddle 5 is as an additional bonding agent 23 a coating of a thermoplastic applied when heated by the heating coil 10 that causes sticking to the inner wall of the supply pipe. The heating coil 10 is via the electrical connection elements 11 and 12 supplied with power during assembly, with the connecting elements 11 and 12 Plugs are that can be disconnected after a joining process of the power supply.

5 shows a schematic longitudinal section through a pipe connector 2 , according to 4 , The dimensions correspond to the orders of magnitude, as they already were 2 are disclosed. In addition, components with the same functions as in 2 marked with the same reference numerals and not discussed separately, so that a more detailed description of the 5 unnecessary.

6 shows a schematic cross section through a pipe connector 2 , according to 5 , where the functions and dimensions of this pipe connector 2 the pipe connector in 1 correspond and components with the same functions as in 1 are denoted by like reference numerals and will not be discussed again.

7 shows a schematic plan view of a pipe connector 2 , according to 6 , where too Here is another comment is unnecessary, since this 7 the in 3 shown pipe connector 2 equivalent.

1

Tube connection system

2

pipe connectors

3

supply pipe

4

branch pipe

5

saddle

6

pipe extension

7

center of the saddle

8th

Curvature of the saddle

9

contour of the supply pipe

10

heating coil

11

connecting element

12

connecting element

13

border area

14

inner contour of the supply pipe

15

outer contour of the supply pipe

16

Supply pipe axis

17

Branch pipe axis

18

heating wire

19

Beading

20

sealing element

21

outer sheath of the pipe socket

22

inner wall of the pipe socket

23

bonding agent

24

opening

25

balancing and sealing material

α

angle between the tube axes

a

distance the heating coil from the opening in the supply

pipe

b

width the heating coil

d

diameter the branch pipe or the pipe socket

D

Inner diameter of the supply pipe

k

diameter of the saddle

l

extension of the saddle

w

Wall thickness

z

thickness of the saddle

Claims (20)

Pipe system ( 1 ) with a pipe connector ( 2 ), a supply pipe ( 3 ) and a branch pipe ( 4 ), wherein the pipe connector ( 2 ) a curved saddle ( 5 ) and a pipe socket ( 6 ), from the saddle ( 5 ) and in the center ( 7 ) of the saddle ( 5 ), wherein the curvature ( 8th ) of the saddle ( 5 ) to the contour ( 9 ) of the supply pipe ( 3 ) and the pipe socket ( 6 ) to the diameter (d) of the branch pipe ( 4 ) and medium-tightly connected to the surrounding saddle material and wherein the saddle ( 5 ) a heating coil ( 10 ), which is embedded in a saddle material and two electrical connection elements ( 11 and 12 ) for a separable power supply in the edge region ( 13 ) of the saddle ( 5 ) having. Pipe assembly system according to claim 1, characterized in that for internal assembly, the curvature ( 8th ) of the saddle ( 5 ) of the inner contour ( 14 ) of the supply pipe ( 3 ) and the outer diameter of the pipe socket ( 6 ) the inner diameter (d) of the branch pipe ( 4 ) is slidably adjusted. Pipe joint system according to claim 1, characterized in that for external mounting the curvature ( 8th ) of the saddle ( 5 ) of the outer contour ( 15 ) of the supply pipe ( 3 ) and the inner diameter (D) of the pipe socket ( 6 ) the outer diameter of the branch pipe ( 4 ) is slidably adjusted. Pipe joint system according to one of the preceding claims, characterized in that the pipe connector ( 2 ) has one of the materials PE, PP or PVDF. Pipe joint system according to one of the preceding claims, characterized in that the supply pipe ( 3 ) and / or the branch pipe ( 4 ) PE-HD. Pipe joint system according to one of the preceding claims, characterized in that the supply pipe ( 3 ) has a composite pipe with a protective jacket and an inner tube made of PE-HD. Pipe joint system according to one of the preceding claims, characterized in that the supply pipe ( 3 ) has a circular or oval cross section, to which the curvature ( 8th ) of the saddle ( 5 ) is adjusted. Pipe joint system according to one of the preceding claims, characterized in that the supply pipe axis ( 16 ) and the branch pipe axis ( 17 ) have a standardized angle (α) to each other. Pipe joint system according to claim 8, characterized in that a round supply pipe ( 3 ) has an inner diameter (D) between 150 mm D 1500 mm, preferably between 200 mm D 1000 mm. Pipe assembly system according to claim 8, characterized in that an oval supply pipe ( 3 ) has an internal extension (DN) between 555/750 mm DN 900/1350 mm. Pipe joint system according to claim 8, characterized in that the branch pipe ( 4 ) an inner diameter (d) wi 50 mm d 250 mm, preferably between 80 mm d 200 mm. Pipe joint system according to one of the preceding claims, characterized in that the material of the saddle ( 5 ) of the pipe connector ( 2 ) in the area of the embedded heating coil ( 10 ) with the material of the supply pipe ( 3 ) is connected in the assembled state media-tight and cohesively. Pipe assembly system according to one of the preceding claims, characterized in that the heating coil ( 10 ) one in the material of the saddle ( 5 ) embedded heating wire ( 18 ) having. Pipe assembly system according to one of the preceding claims, characterized in that the heating coil ( 10 ) one in the material of the saddle ( 5 ) embedded with PE, PP or PVDF sheathed heating wire ( 18 ) having. Pipe joint system according to one of the preceding claims, characterized in that the pipe socket ( 6 ) an annular bead ( 19 ) for receiving a sealing element ( 20 ), wherein the bead ( 19 ) for internal mounting in the outer jacket ( 21 ) and for external mounting in the inner wall ( 22 ) of the pipe socket ( 6 ) is imprinted. Pipe joint system according to one of the preceding claims, characterized in that the saddle ( 5 ) and / or the pipe socket ( 6 ) a coating of a bonding agent ( 23 ), preferably a thermoplastic, on the supply pipe ( 3 ) or the branch pipe ( 4 ) facing surfaces. Pipe joint system according to one of the preceding claims, characterized in that the saddle ( 5 ) and / or the pipe socket ( 6 ) a sealing and / or compensating material to the supply pipe ( 3 ) or to the branch pipe ( 4 ) out of natural or plastic fabric or knitted fabric. Pipe joint system according to one of the preceding Claims, characterized in that temperature measuring sensors in the saddle material for moni monitoring of the cohesive Connection process are embedded. Pipe joint system according to one of the preceding claims, characterized in that the pipe connector ( 2 ) is a one-piece injection molded part. Pipe joint system according to one of the preceding claims, characterized in that the pipe connector ( 2 ) is a one-piece machined part.