DE102009020942A1 - Pipe connection system for e.g. chemical application, has pressing supports resting on respective support plates and used for transmission of tensile force into pressure forces that are adjustable relative to each other - Google Patents

Abstract

The system has a groove clamping support (2) and a collar clamping support (3) each provided with a pressure support plate (9). A pressing element (5) includes two pressing supports (11) and runs externally around the groove clamping support and the collar clamping support, such that the pressing supports rest on the respective pressure support plates in a flat manner and are used for transmission of tensile force originated from the pressing element into pressure forces. The forces are adjustable relative to each other, and the pressing element includes multiple connecting elements (7).

Description

The The invention relates to a pipe connection system according to the preamble of claim 1. Such pipe connection systems are used for joining used by pipes.

piping need to be reliable in many areas of technology be joined together and their tightness even in mechanical and guarantee thermal loads.

To various pipe connection systems are known whose use mainly based on their field of application. This is the case, for example, in the field of large-scale chemistry Welded connections and flange connections, in the MCR technology often cutting ring fittings and in the analysis and laboratory technology mainly solder joints and clamp connections used.

there have welded and soldered joints first the disadvantage that for mounting the welding and solder joints special welding or soldering equipment as well appropriate craftsmanship skills are necessary. Furthermore are the assemblies of welded and soldered joints associated with a high cost and difficult to be solved again. In addition, these assemblies are in potentially explosive environments not feasible.

flange, which do not have the aforementioned disadvantages, are only at larger pipe diameters applicable. In addition, each must a flange welded to one of the pipe ends to be joined be, which increases the manufacturing cost of such pipes.

Compression Fittings however, they can only be used once, since the first time Screw these cutting ring fittings the cutting rings be attached to the respective pipe end form-fitting, the surface of the pipe ends being damaged becomes. In addition, the union nuts after the first Do not use the cutting ring fittings over the Peel off the respective pipe ends, as the separating ring is form-fitting connected to the pipe end. For cutting ring fittings is but especially of disadvantage that between the cutting rings and the Rohinnenseite a too large dead space is formed.

From the DE 196 64 652 A1 is also known a pipe connection system, which consists of a double threaded connector which is pushed over the gap between two pipe ends and on both sides has an external thread and a smooth end face, two union nut and two sealing rings. In this case, the two union nuts inside a cone, which presses a sealing ring against the end face and the surface of the pipe ends and this is to connect mechanically stable and hydraulically tight.

From Disadvantage of this pipe connection system, however, is that at an axial tensile load, the pipe ends easily from the double threaded connector pull out so that this pipe connection system does not that's for sure.

Furthermore, from the DE 201 19 672 U1 a pipe connection system for connecting two identical equipped with pipe sockets pipe coupling parts known which consists of a connecting nipple, at least two sealing elements and a pipe coupling clamp, in which the geometry and the outer diameter of the connecting nipple are matched to the pipe sleeves and the pipe coupling clamp the pipe coupling parts on flanges and surrounds the connecting nipple and / or the pipe ends inside and / or inside the pipe have at least one rear engagement, which should allow a reliable removal of the connecting nipple from the pipe sleeve.

adversely but at this pipe connection system is that with the connecting nipple an additional component is needed, which the Increased manufacturing cost of this Rohrverbin training system. moreover becomes larger during assembly of the pipe coupling clamp Freedom of work needed, which is why this pipe connection system can be used only limited.

From decisive disadvantage is that between the connecting nipple and the end faces of the pipe ends of the pipe inside until the respective sealing element a relatively large dead space available in which it is in promotion of chemically reactive media in the pipes to unwanted deposits and chemical reactions can come into this dead space.

Of the The invention is therefore based on the object, a generic To develop pipe connection system, on the one hand, even with axial tensile load the pipe ends reliably seals and on the other hand small and is handy, has a simple structure, requires little installation freedom and virtually no dead space between the pipe inside and sealing element having.

These The object is achieved by the characterizing features of claim 1 solved. Expedient embodiments emerge the dependent claims 2 to 12.

Remove the new pipe connection system gen mentioned the disadvantages of the prior art.

Advantageous when using the new pipe connection system it is that a Nutklemmstutzen and a collar clamp each one on their have respective circumference extending print run and a pressing element has two pressing conditions and externally to the Nutklemmstutzen and the collar clamp runs because As a result, the press rests plane surface on the respective print run rest and for transmitting power from the pressing element outgoing tensile force in two mutually directed compressive forces are suitable.

From It is an advantage if the pressing element consists of two pressing shells and consists of a plurality of connecting elements, wherein the connecting elements in particular Screws are. This will make a simple assembly of the pipe connection system allows.

From particular advantage is when the pressing shells through the connecting elements are compressible, including the press shell several through holes and the pressing shell have a plurality of threaded holes. Thereby seals the pipe connection system even with axial tensile load reliable from the pipe ends.

Advantageous is also when the pressing member from a pressing shell, a press holder and a plurality of connecting elements, wherein the press holder having a support arm with a through hole, because so that the pipe connection system for fastening and / or support of pipes to be connected to a wall and / or a Soil is usable. It is also conceivable, this through hole with an internal thread for screwing in a fixing screw to provide.

From Advantage is further, if the Nutklemmstutzen and / or the collar clamping each at a pipe end, to a pipe connection or on a Rohranschlusssensorstutzen are arranged, because thereby the Pipe connection system can be used flexibly.

there it is advantageous if the pipe connection piece and the pipe connection sensor socket in their respective dimensions are designed such that they have clamping surfaces for attachment to retaining elements. It allows in the cross section of the pipe connection piece or of the pipe connection sensor nozzle circular shapes in the direction of rotation any clamping of the clamping surface between 0 offer up to 360 °.

Also is advantageous if the pipe connection sensor nozzle a flow channel and a sensor unit, wherein the flow channel on the one hand in the collar and on the other hand in a connection opening opens, wherein the connection opening an internal thread for securing suitable leads and through the Sen soreinheit and at the same time into at least one more Connection opening opens, wherein in a connection opening a sensor is attached.

The new pipe connection system is now intended to two embodiments be explained.

To demonstrate:

1 : Exploded view of the pipe connection system in a first embodiment,

2 : Exploded view of the pipe connection system in a second embodiment,

3 : Schematic representation of a pipe connecting piece with a groove clamping piece,

4 : Schematic representation of a pipe connecting piece with a collar clamping piece,

5 : Sectional view of the pipe connecting piece with the groove clamping piece,

6 : Sectional view of the pipe connecting piece with the collar clamping piece,

7 : Schematic representation of a pipe connection sensor nozzle,

8th : Sectional view of the pipe connection sensor nozzle,

9 : Schematic representation of an application of the pipe connection system in a side view and

10 : Schematic representation of the application of the pipe connection system in a spatial view.

The new pipe connection system consists in a first embodiment according to the 1 from one at a pipe end 1 positively and positively fastened groove clamping piece 2 and one at a second pipe end 1 likewise frictionally and positively fastened collar clamp 3 , one between the Nutklemmstutzen 2 and the collar clamp 3 arranged sealing ring 4 as well as an externally around the Nutklemmstutzen 2 and the collar clamp 3 arranged Pressele ment 5 , wherein the pressing element 5 again from two pressing shells 6 . 6 ' and fasteners 7 composed.

In this case have the Nutklemmstutzen 2 and the collar clamp 3 one each to the outer shape of the sealing ring 4 adapted sealing ring holder 8th , wherein the Nutklemmstutzen 2 about 80% and the collar clamp 3 about 20% of the sealing ring 4 take up. The outer dimensions of the Nutklemmstutzens 2 and the collar clamp 3 are also coordinated so that they form a positive groove / collar connection in the assembled state. Furthermore, have the Nutklemmstutzen 2 and the collar clamp 3 one each over the respective circumference of the pipe ends 1 running print run 9 on.

The two pressing shells 6 . 6 ' of the pressing element 5 each have a Klemmstutzenaufnahme 10 each with a press rest 11 on, with the Klemmstutzenaufnahmen 10 are formed such that the Nutklemmstutzen 2 and the collar clamp 3 in the assembled state completely and positively in the Klemmstutzenaufnahmen 10 fit. Here are the Pressauflagen 11 on the respective opposite print run 9 plane surface.

In addition, possess the pressing shell 6 at least two through holes 12 each with a further print run 13 as well as the pressing shell 6 ' at least two threaded holes 14 , wherein the diameters of the through holes 12 slightly larger than the outer diameter of the fasteners 7 is and the thread size of the threaded holes 14 the external thread of the connecting element 7 equivalent.

In the handling of the new pipe connection system according to the first embodiment, the sealing ring 4 in a sealing ring receptacle 8th of Nutklemmstutzens 2 or the collar clamp 3 placed. Thereafter, the Nutklemmstutzen 2 and the collar clamp 3 put together so that they form a positive groove / circular connection. Subsequently, the two pressing shells 6 . 6 ' of the pressing element 5 so around the groove clamping 2 and the collar clamp 3 placed that completely and positively in the Klemmstutzenaufnahmen 10 fit. Last are the fasteners 7 through the through holes 12 the pressing shell 6 pushed and into the threaded holes 14 the pressing shell 6 ' Turned until the fasteners 7 over the print run 13 and the threaded holes 14 the pressing shells 6 . 6 ' contract. The pressing shells press 6 . 6 ' about her press pads 11 on the respective opposite print run 13 of the groove clamp 2 and the collar clamp 3 , which also causes the Nutklemmstutzen 2 and the collar clamp 3 pressed against each other. At the same time while the sealing ring 4 compressed so that an effective seal between the Nutklemmstutzen 2 and the collar clamp 3 the pipe ends 1 is achieved, with virtually no dead space between the pipe inside and sealing ring 4 arises.

The new pipe connection system has in a second embodiment according to the 2 instead of the pressing shell 6 ' of the pressing element 5 a press holder 15 , In this case, the press holder 15 one like the pressing shell 6 ' configured clamp neck receptacle 10 with the press rest 11 as well as two threaded holes 14 on.

In addition, has the press holder 15 a support arm 16 with a through hole 17 , wherein the through hole 17 for attachment to a in the 2 not shown frame is used.

Alternatively, it is also conceivable, the press holder 15 instead of the support arm 16 equipped with a suspension spindle for ceiling suspension.

Alternatively, in the new pipe connection system according to the 3 and 4 a pipe end 1 through a pipe connection 18 . 18 ' be replaced, with the pipe connection 18 in the 3 the groove clamp 2 and the pipe connection 18 ' in the 4 the collar clamp 3 exhibit.

Inside the pipe connection 18 . 18 ' is in accordance with the 5 and 6 a flow channel 19 , on the other hand, in the groove clamp 2 ( 5 ) or Bundklemmstutzen 3 ( 6 ) and on the other hand into a connection opening 20 empties. In this case, the connection opening 20 an internal thread for securing suitable supply or discharge lines.

Alternatively, in the new pipe connection system according to the 7 and 8th a pipe end 1 also by a pipe connection sensor socket 21 be replaced, the pipe connection sensor socket 21 also the collar clamp 3 , the flow channel 19 and the connection opening 20 having. In addition, the pipe connection sensor socket has 21 a sensor unit 22 through which the flow channel 19 passes and at the same time in four further connection opening 20 ' opens, with in this connection opening 20 ' one sensor each 23 is attached.

As a sensor 23 Any suitable sensor types, such as a pressure, temperature, pH or concentration sensor can be used.

Alternatively, the pipe connection sensor socket can 21 instead of the collar clamp 3 also with a groove clamp 2 be executed.

The application of the new pipe connection system should be in accordance with 9 and 10 at a metering device 24 be explained.

The dosing device 24 includes a tubular frame 25 standing on a rail 26 is set up. The tubular frame 25 in turn consists of several vertically and horizontally arranged support tubes 27 , which by means of angle clamps 28 are attached to each other non-positively.

On the vertical support tubes 27 are each such a further angle clamp 28 attached that the respective support tube 27 one pipe connection piece each 18 . 18 ' supported. Between these pipe connection pieces 18 . 18 ' are in the flow direction successively a filter 29 , a dosing pump 30 and a volumetric flow meter 31 arranged, with the pipe ends 1 between the pipe connection piece 18 . 18 ' and the filter 29 or the volume flow meter 31 as well as between the filter 29 and the dosing pump 30 each by means of pressing shells 6 . 6 ' according to the 1 connected to each other.

The pipe ends 1 between the metering pump 30 and the volume flow meter 31 are by means of the pipe connection system 6 ' according to the 2 connected together, with the support arm 16 over a support 32 opposite the rail 26 supported.

On the horizontal support tube 27 is about another angle clamp 28 a regulator 33 suspended, with both the metering pump 30 as well as with the volume flow meter 31 electrically connected.

In function of the dosing device 24 is through the dosing pump 30 suction side via pipe connection 18 and the filter 29 aspirated and on the pressure side via the volume flow meter 31 and the other pipe connection 18 from the metering device 24 pressed. In this case, the flow rate of the metering pump 30 over the volume flow meter 31 and the regulator 33 regulated. Since the pipe connection system almost no dead space between the pipe inside and sealing ring 4 has, is regulation of the flow rate of the metering pump 30 fast and dynamic.

Of particular advantage when combining the new pipe connection system with the tubular frame 25 It is that by the use of the circular cross-section support tubes 27 , Pipe connection 18 . 18 ' or pipe connection sensor socket 21 in conjunction with the angle clamps 28 In contrast to a Cartesian connection system, every space point is reachable. This makes the new pipe connection system in combination with the pipe frame 25 particularly flexible.

It is also conceivable between the two pressing shells 6 . 6 ' and / or between the pressing shell 6 ' and the press holder 15 to arrange a joint, whereby both pressing shells 6 . 6 ' or the pressing shell 6 ' and the press holder 15 are pivotally connected to each other. By a one-piece design of the pressing element 5 the assembly of the pipe connection system is further simplified.

1

pipe end

2

Nutklemmstutzen

3

Bund clamp connection

4

seal

5

press member

6 6 '

Press shell

7

connecting element

8th

Sealing ring receiving

9

circulation

10

Clamping stub mounting

11

Press edition

12

Through Hole

13

circulation

14

threaded hole

15

Press bracket

16

support arm

17

Through Hole

18 18 '

Pipe connection

19

flow channel

20 20 '

port opening

21

Pipe connection sensor nozzle

22

sensor unit

23

sensor

24

metering

25

tubular frame

26

rail

27

support tube

28

Angle pipe clamp

29

filter

30

metering

31

Flow meter

32

support

33

regulator

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19664652 A1 [0007]
• - DE 20119672 U1 [0009]

Claims (12)

Pipe connection system, characterized in that - a Nutklemmstutzen ( 2 ) and a collar clamp ( 3 ) each have a running over their respective circumference print edition ( 9 ) and - a pressing element ( 5 ) two press runs ( 11 ) and externally in such a way around the Nutklemmstutzen ( 2 ) and the collar clamp ( 3 ), that the press pads ( 11 ) plane on the respective print run ( 9 ) and for transmitting force one of the pressing element ( 5 ) Outgoing tensile force in two successive directed compressive forces are suitable. Pipe connection system according to claim 1, characterized in that the pressing element ( 5 ) from two pressing shells ( 6 . 6 ' ) and a plurality of connecting elements ( 7 ) consists. Pipe connection system according to claim 2, characterized in that the pressing shells ( 6 . 6 ' ) by the connecting elements ( 7 ) are compressible, including the pressing shell ( 6 ) several through holes ( 12 ) and the pressing shell ( 6 ' ) several threaded holes ( 14 ), wherein the inner diameter of the threaded holes ( 14 ) on the outer diameter of the connecting elements ( 7 ) are tuned. Pipe connection system according to claim 1, characterized in that the pressing element ( 5 ) from a press shell ( 6 ), a press mount ( 15 ) and a plurality of connecting elements ( 7 ), wherein the press holder ( 15 ) a support arm ( 16 ) with a through hole ( 17 ) having. Pipe connection system according to claim 4, characterized in that the pressing shell ( 6 ) and the press holder ( 15 ) by connecting elements ( 7 ) are compressible, including the pressing shell ( 6 ) several through holes ( 12 ) and the press holder ( 15 ) several threaded holes ( 14 ), wherein the inner diameter of the threaded holes ( 14 ) on the outer diameter of the connecting elements ( 7 ) are tuned. Pipe connection system according to claim 3, characterized in that the pressing shells ( 6 . 6 ' ) each a Klemmstutzenaufnahme ( 10 ) exhibit. Pipe connection system according to claim 5, characterized in that the pressing shell ( 6 ) and the press position ( 15 ) each a Klemmstutzenaufnahme ( 10 ) exhibit. Pipe connection system according to claim 6 or 7, characterized in that the Klemmstutzenaufnahme ( 10 ) two press runs ( 11 ). Pipe connection system according to one of the preceding claims, characterized in that the groove clamping piece ( 2 ) and / or the collar clamp ( 3 ) each at a pipe end ( 1 ), on a pipe connection ( 18 ) or at a pipe connection sensor socket ( 21 ) are arranged. Pipe connection system according to claim 9, characterized in that pipe connection pieces ( 18 ) and the pipe connection sensor socket ( 21 ) are formed in their respective dimensions such that they have clamping surfaces for attachment to holding elements. Pipe connection system according to claim 10, characterized in that the pipe connection piece ( 18 ) a flow channel ( 19 ), on the one hand in the Nutklemmstutzen ( 2 ) or in the collar clamp ( 3 ) and on the other hand into a connection opening ( 20 ), wherein the connection opening ( 20 ) has an internal thread for fixing suitable supply or discharge lines. Pipe connection system according to claim 11, characterized in that the pipe connection sensor socket ( 21 ) a flow channel ( 19 ) and a sensor unit ( 22 ), in which the flow channel ( 19 ) - on the one hand in the collar clamp ( 3 ) and on the other hand into a connection opening ( 20 ), wherein the connection opening ( 20 ) has an internal thread for fastening suitable supply lines and - by the sensor unit ( 22 ) and simultaneously into at least one further connection opening ( 20 ' ), wherein in a connection opening ( 20 ' ) a sensor ( 23 ) is attached.