AT515540A4 - Connecting part for a pipeline - Google Patents

Abstract

The invention relates to a connection part for a pipeline, comprising a housing (1) with at least one insertion opening (2) for introducing at least one tube (3), and at least one sleeve (4), which crosses over the tube (3), preferably a cone a screw or bayonet thread, wherein for securing the tube (3) in the insertion opening (2) with a conical actuating surface (5) on the inner circumference of the sleeve (4) cooperating Zugsicherung is provided, the Zugsicherung a substantially annular clamp ( 6) and a, the terminal (6) embracing conical fixing ring (20), and the terminal (6) is designed as a preferably broken ring and at its outer periphery at least one, with the conical actuating surface (5) of the sleeve (4). cooperating conical pressure surface (8), wherein the fixing ring (20) with the sleeve (4) and the clamp (6) is engaged. The invention further relates to a pipeline with such a connection part

Description

Ansehlussteil for a pipeline

The invention relates to a Ansehlussteil for a pipeline.

Anchiussteiie for pipes are known in the art, which comprise a housing with at least one insertion opening for importing at least one tube and at least one, the tube-spanning sleeve, the sleeve is formed on the two such Anschiussteilen regularly as a cone with a screw or bayonet thread. To attach the Anschiussteils on the pipeline, the pipe is inserted into the Ansehlussteil. To fix the tube in the insertion opening, pull retainers are known, which cooperate with a conical actuating surface on the inner circumference of the sleeve. As a result, the inserted tube is secured against axial tensile loading.

Such connection fittings are widespread as accessories, in particular as plug-in fittings and connections for pipelines. The tension lock is forced apart when the pipe is pushed in and pushes against the actuating surface of the sleeve on the one hand and against the outer circumference of the inserted pipe on the other hand. Due to the conical, the inner cross-section of the sleeve against the direction of insertion of the tube tapered actuating surface, the Zugsicherung counteracts axial removal of the tube, as the removal of the tube, the Zugsicherung is moved and pushes more against the outer periphery of the pipe.

However, there is the problem that, when inserting the tube into the sleeve, the tension lock jams and does not come into contact with the actuating surface of the sleeve on its circumferential surface. As a result, the pull-out strength is reduced and in the worst case, the attachment part leaks.

The object of the invention is thus, inter alia, an Anschiusstei! which is easily and sturdily mountable and in particular makes it possible to achieve a good seal of the pipeline against the excess or excess transported medium, and at the same time a good tensile strength against axial stresses of the pipeline.

These and other objects are achieved according to the invention by a connector according to claim 1 of the appended claims. The attachment part comprises a housing with at least one insertion opening, at least one sleeve which extends across the tube, wherein a tension lock is provided which cooperates with a conical engagement surface on the inner circumference of the sleeve.

According to the invention, the Zugsicherung the Anschlusstells comprises a plurality of parts, namely at least one substantially annular clamp and a, the clamp encompassing conical fixing ring. According to the invention, the clamp is designed as a ring and comprises on its outer periphery at least one likewise conical pressure surface cooperating with the conical actuating surface of the sleeve. The clamp is preferably designed as a broken ring. The clamp according to the invention can also be designed as a continuous ring without interruption.

The clamp engages the outer surface of the tube as the tube is inserted. The cooperation of the conical pressure surface of the clamp with the conical actuating surface of the sleeve causes the securing against axial tensile loads of the pipeline. The fixing ring is resiliently engaged with the sleeve and the clamp so that the clamp is centered within the sleeve.

The fixation may for this purpose have fixing means which at least partially restrict the movement of the clamp. The fixation center! can counteract twisting of the clamp, but allowing axial displacement of the clamp. The movement of the clamp can be limited by the fixing ring in at least four degrees of freedom, preferably in five degrees of freedom. It can thereby be achieved that the clamp remains movable only in one or two degrees of freedom. This effectively prevents the clamp from shifting or creeping when inserting the tube across the direction of insertion.

According to the invention, it can be provided that the fixing ring comprises a sleeve, wherein inward of the circumference of the sleeve inwardly projecting spring elements, in particular spring pockets are provided. The spring elements can resiliently cooperate with the outer periphery of the clamp. For this purpose, exemptions may be provided on the outer circumference of the clamp, in which the spring elements are spring-engaged. The spring member serves to help the clamp in position and to push in the direction of the insertion opening, thereby achieving centering of the clamp relative to the sleeve. If the tube is inserted into the insertion opening, then the clamp moves axially and the spring tabs spring back.

According to the invention it can be provided that on the outer circumference of the clamp a variety, separated by the exemptions, pressure jaws are provided whose outer surfaces form the conical printed matters of the terminal. However, the clamp can also be executed without pressure jaws and reliefs, but as a circumferential conical ring, so that the spring elements act directly on the conical pressure surface.

According to the invention it can be provided that the clamp is designed as a broken ring with an opening whose dimension in the axial direction of the ring is substantially constant. According to the invention it can be provided that the position of the fixing ring is fixed inside the sleeve by a stop on the actuating surface.

According to the invention it can be provided that a conical terminal chamber is provided adjacent to the stop in the socket for receiving the clamp, wherein the pressure surface of the clamp preferably cooperates exclusively with the actuating surface within the clamp chamber. According to the invention, the clamping surface in the region of the clamp chamber can have a different surface structure Slope as outside of the terminal chamber. According to the invention it can be provided that the clamp has an inner diameter which is less than the diameter of the insertion opening,

This ensures that the clamp is forced apart during assembly and engages with its Elgenspannung in the tube. In addition, the clamp is held in position, in particular centered, by the spring pockets of the fixing ring, which act on the outer circumference of the clamp or on the free positions on the outer circumference of the clamp. It may preferably be provided that a diameter-expanding insertion fiber is provided at an end face of the clamp for inserting the tube.

During assembly, the clamp captures the tube with the lead-in chamfer and is guided over the spring tabs that fit into the clamp's exits. Due to the breakthrough in the ring of the clamp, the clamp can expand in diameter, thereby generating the residual stress of the clamp on the pipe. As the pressure in the pipe increases, the axial force on the pipe increases. The clamp moves along the conical actuation surface, resulting in a diameter reduction. Preferably, but not necessarily on the inner periphery of the clamp arranged Rückhaitemlttei engage deeper into the tube and ensure the train safety.

According to the invention, it may be provided that the clamp has restraining means on its inner periphery for engagement with the outer surface of the tube, which may be an assembly or teeth.

According to the invention it can be provided that at least one sealing ring is arranged in a sealing chamber between the housing and the sleeve, which is preferably tapered at least on one side by a Anspredfianke. The seal chamber and sealing ring ensure that the inside of the port side is sealed and no media can escape from the end of the tube.

The taper of the contact edge is preferably executed such that in the direction of insertion of the tube, the expansion of the sealing chamber decreases. The sealing chamber may in particular have a conical taper in the insertion direction. As a result, as the pressure increases, the sealing ring becomes more compressed and seals better.

According to the invention, it can be provided that an annular Aufdrehsicherung is provided, which abuts against a stop of the housing and is engaged via peripheral connection elements, in particular snap hook, with exemptions of the sleeve. For easy disassembly of the anti-rotation lock, at least one groove may be provided on the outer circumference of the sleeve.

According to the invention, it can be provided that a receiving chamber for receiving a joint seal is provided on an inner periphery of an insertion opening of the sleeve. The receiving chamber can be made parallel to the longitudinal axis of the sleeve or conical. The conical design, in which the diameter of the receiving chamber decreases in the direction opposite to the direction of insertion, has the advantage that the pressure of the lip seal is increased as the pressure inside the pipeline increases.

According to the invention, it can be provided that the lip seal has an inner diameter which is smaller. as the inner diameter of the insertion opening.

According to the invention, it can be provided that the lip seal has a cross-section with two outwardly projecting press lips and an inwardly protruding stripping lip, so that when the pipe is inserted into the insertion opening, the press lips are pressed together and contaminants on the pipe are removed by the release lip. This double-acting seal geometry allows for easier deformation the seal at the Rohrmonfage and thus requires less mounting forces. In addition, the deformation of the lip seal increases the density. The lip seal also acts as a dust shield against external environmental conditions such as groundwater or sand. The upward seal is also the main seal of the fitting and counteracts leakage of the interior pressurized medium.

According to the invention it can be provided that the lip seal has at its inner circumference a bead and an inlet bevel in order to facilitate the insertion of the tube into the insertion opening.

Eifindungsgemäß can be provided that at least a transversely extending Führursgsrippe and at least one preferably circumferential pipe stop is provided inside the housing

According to the invention it can be provided that the housing and the sleeve are connected or connectable via a screw connection, a bayonet connection or a double bayonet connection.

The double bayonet can be offset or in a row, with the bayonet bar running parallel or with a pitch in the form of a thread. Also on the housing can be provided a Einführfase for easier insertion of the sleeve. The connection of the housing with the sleeve is then durchsine combination of axial movement and rotational movement.

According to the invention it can be provided that the stop member is ausgeleefert in the assembled state, whereby the user only has to insert the tube into the Bezuböfinung the Anschlussfeiis.

The invention further extends to a pipeline having an attachment according to the invention.

The invention will now be explained in more detail with reference to a non-exclusive embodiment. Show it

Fig. 1a 1c: schematic representations of the attachment file;

2 shows a schematic representation of the attachment part in the mounted state;

Fig. 3a ™ 3d: schematic representations of the sleeve;

Figures 4a-4c are schematic illustrations of the housing;

Fig. 5a-5c are schematic illustrations of the fixing ring;

Fig. 6a - 6c: schematic representations of the clamp;

7a-7c are schematic representations of the direction of the upward direction;

Fig. 1a to 1c show schematic representations of an embodiment of an inventive Anschiussteils in the form of a plug-in fitting. The connecting part comprises a housing 1 with two insertion openings 2 for insertion and connecting two pipes, at both ends of the housing 1, the insertion openings 2 cross-sleeves 4 are arranged. In order to prevent inadvertent release of the sleeves 4, 4 annular Aufdrehsicherungen 13 are arranged frontally of both sleeves. The delivery of the connecting part is preferably carried out in the illustrated state gemgehaulen state; the user only has to insert the two pipe ends into the insertion openings 2; the fixation is carried out automatically by the pull fuses inside the connection part.

Fig. 1 b shows a cross section through the embodiment according to the invention of the attachment part in the longitudinal direction. The housing 1 is connected on both sides with a respective sleeve 4 and has two insertion openings 2 for the insertion of the tube ends, The insertion direction of the tubes is indicated by arrows.

The connection of the sleeve 4 with the housing 1 via a bayonet connection, wherein subsequent to the bayonet connection for sealing sealing rings 10 in-sealing chambers 11 between the housing 1 and sleeve 4 are provided. The sealing chambers 11 are designed such that they have a pressure flank 12, which tapers the sealing chambers in the insertion direction of the tubes. As a result, when the pressurized medium exits, the ring 10 is pushed and compressed in the direction of insertion, thereby increasing the sealing effect.

The end face subsequent to the sleeve 4 annular Aufdrehsicherungen 13 are provided. These abut against a stop 27 of the housing and are connected to the sleeves 4 überssesseifige connecting elements. This prevents inadvertent opening of the bayonet closure between the housing and the sleeve 4.

In the region of the insertion opening 2, a receiving chamber 15 is provided on the inner periphery of the sleeve 4, in which a lip seal 16 is located. The cap seal 16 has an inner circumference smaller than the inner circumference of the insertion opening of the sleeve 4.

For fixation of the tube in the insertion opening 2 a Zugsicherung is provided on the inner circumference of the sleeve 4, which comprises a substantially annular clamp 6a and a, the terminal 6 encompassing conical fixing ring 20. The fixing ring 20 has at its periphery inwardly projecting spring pockets 21 through which the fixing ring 20 is engaged with the clamp 8. In addition, the fixing ring 20 rests against a stop 25 of the sleeve 4, and is thereby substantially fixed in position inside the sleeve 4. At its other end, the fixing ring is fixed by the position of the housing 1. This results in the effect according to the invention that the spring tabs 21 of the position-fixing ring 20 center the clamp 6 and press the clamp 6 against the insertion direction of the tube.

Fig. 1c shows an exploded view of the embodiment of the Ansehlussteiis, Dargesfellt is the housing 1 with the sealing ring 10, the anti-rotation 13, the sleeve 4, the fixation 20, the terminal 6, and a lip seal 16, Also shown are the snap hook 14 of the anti-rotation 13, which engage with unshown reliefs 23 on the inner periphery of the sleeve 4 to prevent inadvertent disassembly of the sleeve. For targeted disassembly of the anti-rotation 13 a groove 22 is provided on the outer circumference of the sleeve 4.

The tension protection in the form of the terminal 6 and the terminal cross-fixing ring 20 is designed such that the spring tabs 21 of the fixing ring 20 resiliently engage in positions 34 on the outer circumference of the terminal 8. However, other embodiments of the invention are also contemplated in which the clamp 8 has no pressure jaws 31 and reliefs 34 and the spring tabs 21 press directly against the conical pressure surface 8 of the clamp.

On the outer circumference of the clamp 6, there are preferably provided a plurality of pressure jaws 31 separated from one another by the free positions 34, the outer surfaces of which form the conical pressure surfaces 8 which cooperate with the conical actuating surface 5 of the sleeve 4.

Fig. 2 shows a cross-section through the connecting arrow in the longitudinal direction in the assembled state, two tubes 3 are inserted into the Einsehuböffnungen 2 of Anschiussteiis. The suppression 16ungen are compressed and cause an efficient sealing of the pipes against environmental influences, as well as a seal against the outflow of the internally pressurized medium.

The clamp 6 is pressed by the spring tabs 21 of the fixing ring 20 against the pipe and against the insertion direction of the pipe 3 indicated by arrows, whereby the conical pressure surfaces 8 of the clamp 6 is pressed against the conical actuating surface 5 of the sleeve 4.

The clamp 8 preferably has at its inner circumference Rückhaiternittei with which it engages in the outer circumference of the tube 3. When the pipe 3 is now pressed or pulled against the direction of insertion by axial load, the clamp 6 moves with the pipe and the conical pressure surfaces 8 of the clamp 8 force fit against the conical actuating surface 5 of the sleeve 4, thereby effectively counteracting axial removal of the pipe 3 cast is. Also visible in this illustration are the sealing ring 18 and the anti-rotation device 13. A central tube impact 19 prevents the tube 3 from being pushed in too far.

Comparing Fig. 1b with Fig. 2, the effect of the spring tabs 21 of the fixing ring 20 can be seen. These ensure that the position of the clamp 8 is fixed inside the sleeve 4 during insertion of the tube 3 and centered so that the clamp 8 can not twist or tilt inside the sleeve,

In alternative embodiments of the invention, no pressure jaws 31 and free positions 34 are provided, so that the clamp 8 is protected against twisting by the spring tabs 21 of the fixing ring 20 only against tilting, but not against twisting.

To facilitate insertion of the tube 3 into the clamp 8, this has an insertion chamfer 9 at its periphery facing the insertion opening. The inner circumference of the clamp 8 is smaller than the inner circumference of the insertion opening 2 of the socket 4, the clamp 8 being in the form of a broken ring in this embodiment is, whose diameter is expanding during the import of the tube 3

3a to 3d show schematic representations of the sleeve 4 with a double bayonet thread. The sleeve 4 has in its interior bayonet threaded ridges 24, which cooperate with corresponding bayonet threaded ridges on the outer circumference of the housing 1, in the region of the insertion opening 2, a receiving chamber 15 is provided for the Uppendichtung 18.

The diameter of the shoe opening 2 is given by the smallest internal diameter of the sleeve 4 and of the housing 1. Also visible in the illustrations is the stop 25 in the form of an edge for the fixing ring 20. Directly adjacent to the stop 25 is the clamping carriage 26. In the assembled state The fixing ring 20 is located entirely outside the clamp chamber 28, and the clamp 8 is located at least partially in the clamp chamber 28. In the clamp chamber 28 there is provided the conical actuation surface 5 of the sleeve which cooperates with the conical pressure surface 8 of the clamp 8. In order to achieve a higher friction and thus a better adhesion between the actuating surface 5 and the Druckfiäche 8, it can be provided that the Betsfigungsfläche 5 and / or Druckfiäche 8 is roughened.

On the outer, the housing 1 facing the circumference of the sleeve 4 is also a groove 22 for disassembly of Aufrehsicherung angeordnei. Thus, the anti-rotation 13 can be disassembled by a suitable tool, such as a screwdriver.

4a to 4c are illustrations of the housing 1. This has at both insertion openings 2 via bayonet webs 24, which cooperate with the bayonet threaded ridges of the sleeve 4. In the middle part of the housing 1, two annular stops 27 are provided for the muffs 4. The stop 2? serves as a stop for the anti-rotation 13, the snap hooks 14 engage in the notches 28. On the other side of the abutment 27, the sealing chamber 11 for accommodating the sealing ring 10 is arranged on both sides of the housing 1, the sealing chamber 11 merging into the abutment 27 via an inclined abutting edge 12. On the inner circumference of the housing 1 Führungsrippsn 29 are arranged for guiding the tube 3 to be inserted. Furthermore, a pipe stop 19 is provided inside the housing 1.

5a to 5c show a schematic representation of the fixing ring 20. This comprises a sleeve 30 with a conical outer surface, wherein from the periphery of the sleeve 30 inwardly projecting spring tabs 21 are provided. These spring bags 21 engage inFreistellungen 34 on the outer circumference of the terminal 8 resiliently.

6a to 6c show schematic representations of the terminal 6, this is designed substantially annular. The ring is divided by a breakthrough 7. On the outer circumference of the clamp 6, a plurality of pressure jaws 31 are provided in this embodiment, which are preferably separated by exemptions 34. The exemptions 34 are marked in the illustrations. The outer surfaces of the pressure jaws 31 form the conical pressure surfaces 8 which cooperate with the conical actuating surface 5 of the sleeve 4,

In other embodiments of the invention, the clamp 6 is designed as a preferably broken ring with a conical outer actuating surface 8, so that the spring tabs 21 of the fixing ring 20 act directly against the actuating surface 8.

At one end face of the clamp 6, a diameter-expanding insertion phase 9 is provided to facilitate the insertion of the tube 3. The inner diameter of the clamp 8 is less than the diameter of the insertion opening 2 in the non-frangible state, thereby pressing the clamp 6 apart during the insertion of the tube 3.

Retaining means may be provided on the inner circumference of the clamp 8 for engagement with the outer surface 3 of the tube 3.

Figs. 7a to 7c are schematic views of the lip seal 18 disposed in the receiving chamber 15 of the sleeve 4. Figs. The suppression 18 has an inner diameter which, in the unmounted state, is less than the inner diameter of the insertion opening 2. In order to facilitate the insertion of the tube, the overhang is designed with an insertion bevel 32, which merges into a bead 33.

The upset seal 16 has two outwardly projecting press lips 17 and an inwardly projecting wiper lip 18. As the tube 3 is inserted into the viewing port 2, the press lips 17 are compressed and contaminants on the tube are removed by the wiper lip 18. The primary seal 16 serves primarily to seal against the outflow of the pressurized medium inside.

The invention is not limited to the embodiments according to the invention but extends to all connecting parts within the scope of the following patent claims as well as to pipelines with such connecting parts. In particular, the invention is not limited to the use of the fitting as a fitting between two pipes, but also includes tees, fittings, and other accessories.

Squeeze box 1 Housing 2 Insertion opening 3 Pipe 4 Sleeve 5 Conical operating surface of the socket 8 Terminal 7 Opening 8 Conical pressure surface of the terminal 9 Insertion chamfer 10 Sealing ring 11 Sealing chamber. 12 contact press 13 anti-rotation lock 14 snap hook 15 receiving chamber 16 uplift seal 17 press lips 18 wiper lip 19 pipe adapter 20 fixation 21 spring tab 22 groove for disassembling the anti-rotation lock 23 release for snap hooks 24 bayonet threaded rests 25 stop for fixing ring 28 terminal chamber 27 stop for sleeve 28 latch for snap hooks 29 guide ribs 30 sleeve 31 Compression jaws 32 Insertion slope 33 Bead 34 Exemptions on the clamp

Claims (18)

1. Ansehiussteii for a pipeline, comprising a) a housing (1) with at least one insertion opening (2) for importing at least one tube (3) T and b) at least one, the tube (3) cross-sleeve (4), preferably a cone with a screw or bayonet thread, c) wherein for securing the tube (3) in the insertion opening (2) with a conical Betätigungsstläche (5) on the inner circumference of the sleeve (4) cooperating Zugsicherung is provided, characterized in that i) the Zugsicherung a substantially annular clamp (8) and a conical flattening ring (20) encompassing the clamp {8}, and i!) the clamp {8} is designed as a preferably broken ring and at its outer circumference at least one, with the conical actuating fold (5 Ui), wherein the fixing ring (20) engages with the sleeve (4) and the clamp (6), the sleeve (4) comprising cooperating, conical pressure surface (8) Ui). 2. Anschlussteii according to claim 1, characterized in that the fixing ring (20) comprises a sleeve (30), wherein from the periphery of the sleeve (30) inwardly projecting spring elements, in particular spring tabs (21) are provided which are connected to the outer periphery of the clamp (8) springy interaction, A connector according to claim 2, characterized in that the spring elements resiliently engage in recesses (34) on the outer circumference of the clamp (8). 4. Anschiussteil according to claim 3, characterized in that at the outer circumference of the terminal (6) at least two, by the exemptions (34) are provided separate, pressure jaws (31) whose outer surfaces form at least a portion of the conical pressure surface (8). Connector according to one of Claims 1 to 4, characterized in that the clamp (6) is designed as a broken ring with an opening (?). 6. Ansehiussieii according to one of claims 1 to 5, characterized in that the days of the fixing ring (20) in the interior of the sleeve (4) by a stop (25) is fixed on the actuating surface (5). 7. Anchiussteil according to claim 8, characterized in that adjacent the stop (25) in the sleeve (4) a conical terminal chamber (26) for receiving the clamp (8) is provided, wherein the pressure surface (8) of the terminal (6) exclusively within the clamping chamber (26) cooperates with the actuating surface (5). An attachment according to claim 7, characterized in that the seating surface (5) in the region of the clamping chamber (26) has a different surface structure or pitch than outside the clamping chamber (26). 9. Anchiussteil according to any one of claims 1 to 8, characterized in that the clamp (8) has an inner diameter which is less than the diameter of the Einsehuböffnung (2), wherein at one end of the terminal (6) for introducing the tube (3) a diameter-expanding Einführfase (9) is provided. Attachment part according to any one of Claims 1 to 8, characterized in that the clamp (8) has, at its inner circumference, a retainer groove for engagement with the outer surface of the tube (3). 11. Connecting part according to one of claims 1 to 10, characterized in that between the housing {1} and the sleeve (4) at least one sealing ring (10) in a sealing chamber {11} angeordnei which at least on a soap preferably by a Anspressflanke (12 ) is tapered 12. Anschiussieil according to one of claims 1 to 11, characterized in that an annular anti-rotation device (13) is provided on a stop (27) of the housing (1) onuegf and about peripheral connection elements, in particular snap hooks (14), with exemptions (23 ) of the sleeve (4) is engaged, wherein at least one groove (22) is provided for dismantling the anti-rotation lock (13) on the outer circumference of the sleeve (4). An attachment according to any one of Claims 1 to 12, characterized in that, subsequent to an insertion opening (2) of the sleeve (4), at its inner periphery a receiving chamber (15) for receiving a seal against the outlet of the pressurized medium, Lippendschiung (18) is provided. 14. Anschiussieil according to claim 13, characterized in that the tulip seal (18) aufwelst an inner diameter which is smaller than the inner diameter of the insertion opening (2), 15. Anschiussieil according to claim 13 or 14f, characterized in that the lip seal (18) has a cross section with two outwardly projecting pressure lips (17) and an inwardly projecting wiper lip (18), so that upon insertion of the tube (3) into the shoe opening (2 ) the pressure lips (17) are pressed together and impurities on the tube (3) are removed by the remainder (18), 16, Anschlusstel! according to any one of claims 13 to 15f, characterized in that the updrafting direction (16) has at its inner periphery a channel (33) and an insertion slope (32) to facilitate the insertion of the tube {3} into the insertion opening (2). 17, connection tas! according to any one of Claims 1 to 16, characterized in that at least one transverse rib (29) extending in the interior of the housing (1) and at least one preferably circumferential tubular rib (19) are provided 18, pipe with a connection part according to one of the preceding claims,