DE202020100379U1 - Sealing device having sealing insert - Google Patents

Abstract

Sealing device (1) for sealing a pipeline arrangement (2), which has two pipeline units (4) having a pipeline central axis (3) and a clamping device (5), wherein a pipeline unit (4) has a pipeline outer surface (8), a pipeline end face (9 ) and a pipe (6) having a pipe outer diameter (10) and a pipe stub (7) having a pipe stub inner diameter (11), and the pipe stub (7) has a flange portion (13) having a flange portion end face (12) and a pipe portion inner surface (14) ) having pipe section (15), and wherein the clamping device (5) axially clamps the flange sections (13) of the pipe stubs (7) of the two pipeline units (4) with one another, the sealing device (1) in its position of use having an axially between the flange section end faces ( 12) the pipe socket (7) has arranged seal (32), thereby characterized in that the sealing device (1) has a sealing insert (23) arranged in the seal (32) which is configured to define a minimum axial distance (25) between the two pipeline units (4).

Description

The invention relates to a sealing device for sealing a pipeline arrangement, which has two pipeline units having a pipeline central axis and a clamping device, wherein a pipeline unit comprises a pipe having a pipe outer surface, a pipe end face and a pipe outer diameter and a pipe socket having a pipe socket inside diameter, and the pipe socket has a pipe socket Flange section end face having a flange section and a pipe section having a pipe section inner surface, and wherein the clamping device axially braces the flange sections of the pipe sockets of the two pipeline units together, the sealing device in its position of use having a seal arranged axially between the flange section end faces of the pipe sockets.

Sealing devices in the most varied of embodiments, in particular in the form of O-rings, have long been part of the prior art. The disadvantage of this sealing device is that when a pipe arrangement is braced by means of a tensioning device, the seal can be damaged if the contact pressure is too great.

The object of the invention is therefore to provide a sealing device in which damage to the seal due to excessive contact pressure is prevented or at least minimized and the disadvantages of the prior art are eliminated.

In the case of a sealing device of the type mentioned at the beginning, this object is achieved in that the sealing device has a sealing insert arranged in the seal, which is configured to define a minimum axial distance between the two pipeline units. The setting of an axial minimum distance by means of the seal comprising a sealing insert between the two pipeline units is advantageous since the maximum contact pressure of the sealing surface can be specified or adjusted. The excessively high contact pressure which causes damage to the seal is also prevented or at least minimized by the seal insert arranged in the seal. Ideally, when tensioning a pipeline arrangement by means of a tensioning device, the seal is always subjected to exactly the same contact pressure.

The sealing insert preferably has a rectangular or cruciform or circular or oval cross section.

More preferably, the seal is designed in particular as a flat seal or profile seal or O-ring.

The sealing device is expediently designed in accordance with DIN 32676 in particular for clamping sockets.

The sealing insert preferably has a sealing insert end face designed as a stop. A sealing insert end face designed as a stop enables a simple implementation to limit the minimum distance between the two pipeline units to be braced.

According to a further advantageous embodiment of the sealing device, the sealing device has a data carrier which is arranged in the seal and which comprises an electronic data memory that can be written or written to with seal-specific information. The writable, preferably rewritable, data memory of the data carrier enables flexible data management directly on the sealing device and enables seal-specific information to be identified at any time. The seal-specific information on the data carrier, in particular on the RFID transponder, can be changed, deleted or supplemented at any time. In particular, product, maintenance, production or service data are available at any time as seal-specific information directly on the sealing device.

• - Datenträger, die ausschließlich auslesbar sind und die individuell durch den Lieferanten einmalig beschrieben werden, wobei es jedoch nicht möglich ist, nachträglich dichtungsspezifische Informationen hinzuzufügen, zu löschen oder zu überschreiben. Bspw. wird hier das Herstellungsdatum sowie die Eigenschaften der Dichtungsvorrichtung als dichtungsspezifische Information herstellerseitig aufgespielt.
• - Datenträger sind einmalig hersteller- oder kundenseitig beschreibbar und beliebig oft auslesbar. Hierdurch hat der Kunde die Möglichkeit bspw. das Datum des Einbaus der Dichtungsvorrichtung in einer Anlage oder dergleichen als weitere dichtungsspezifische Information auf den Datenträger zu spielen. Vorteilhaft ist hierbei, dass nach dem einmaligen Aufspielen der dichtungsspezifischen Informationen nur noch das Auslesen ermöglicht wird. Somit wird ein fälschliches oder absichtliches Ändern der dichtungsspezifischen Informationen verhindert, wodurch die Qualität der Anlage verbessert wird.
• - Datenträger, die ein unbeschränktes hersteller- oder kundenseitiges Beschreiben und Auslesen des Datenspeichers des Datenträgers erlauben. Auch möglich ist durch das Setzen eines Schreibschutzes ein Sperren der Datenträger sowohl für das Beschreiben und/oder Auslesen.

Three different data carriers can advantageously be used:

• - Data carriers that can only be read out and that are individually written to once by the supplier, although it is not possible to subsequently add, delete or overwrite seal-specific information. For example, the date of manufacture and the properties of the sealing device are recorded here as seal-specific information by the manufacturer.
• - Data carriers can be written once by the manufacturer or by the customer and read out as often as required. In this way, the customer has the option, for example, of playing the date on which the sealing device was installed in a system or the like as further seal-specific information on the data carrier. The advantage here is that after the seal-specific information has been uploaded once, only reading is possible. This prevents the seal-specific information from being incorrectly or intentionally changed, which improves the quality of the system.
• - Data carriers that allow unlimited writing and reading of the data storage medium by the manufacturer or customer. By setting write protection, it is also possible to lock the data carrier for both writing and / or reading.

The sealing device is preferably used in pipeline construction in plant construction, in the bio, pharmaceutical, chemical or food industries or in the sanitary sector.

The data carrier is particularly preferably designed as a part of the sealing insert. The data carrier thus forms part of the sealing insert. This protects the data carrier from mechanical influences and damage to the greatest possible extent.

In this regard, the data memory of the data carrier can be read out, in particular without contact. The data carrier of the sealing device is preferably designed as an RFID transponder. The visual contact-free communication between the RFID transponder and the read / write system offers a high level of insensitivity to contamination, for example by being attached to protected areas, invisible integration into existing products and simplified process optimization. In addition, every data carrier has a unique assignment due to its serial number, which is only assigned once worldwide. This guarantees the exact allocation on the individual product level and a complete product individualization. It is also possible to read several RFID transponders at the same time in one work step, which speeds up work processes.

According to a further advantageous embodiment of the sealing device, the seal is configured to form a defined transition between the two pipe units braced together so that residues of the medium flowing through the pipe arrangement or the media flowing through the pipe arrangement do not accumulate.

According to an additional advantageous development of the sealing device, the seal has a sealing jacket surface which extends radially around a sealing device central axis and on which a sealing section having the data carrier is arranged. As a result, the data carrier, in particular the data carrier designed as an RFID transponder, can be read out in an improved manner when the sealing device is in use. The clamping device is designed as a hinge clamp and the sealing section is or is preferably guided to the outside by a hinge clamp joint of the clamping device. The seal is advantageously made from rubber, preferably from nitrile rubber or perforated rubber, silicone, polyethylene or polytetrafluoroethylene.

The object is preferably achieved by a pipeline system comprising a pipeline arrangement and a sealing device according to one of Claims 1 to 13.

1. a) Einbringen des Dichtungseinsatzes in ein Werkzeug,
2. b) Vergießen des Werkzeugs mit Dichtungswerkstoff und
3. c) Ausbringen der hergestellten Dichtungsvorrichtung aus dem Werkzeug.

The sealing insert arranged in the seal is preferably encapsulated with the seal of the sealing device, the method comprising the following steps:

1. a) inserting the sealing insert into a tool,
2. b) Potting the tool with sealing material and
3. c) Removal of the sealing device produced from the tool.

This method allows the sealing device having a sealing insert to be produced quickly and inexpensively. The method carried out is advantageously an injection molding method or a compression molding method. The sealing device is expediently designed in particular for clamping sockets according to DIN 32676. In step a), a sealing insert comprising the data carrier is preferably introduced into the tool. This has the advantage that the seal-specific information of the sealing device can be read out at any time.

According to a further advantageous embodiment, the sealing device produced by the method is a sealing device according to one of claims 1 to 14.

• 1 eine Schnittdarstellung einer Rohrleitung und eines Rohrstutzens,
• 2 eine Schnittdarstellung der Rohrleitung und des Rohrstutzens, wobei der Rohrstutzen axial auf die Rohrleitung aufgesteckt ist,
• 3 eine Schnittdarstellung einer Rohrleitungseinheit,
• 4 eine Schnittdarstellung von zwei Rohrleitungseinheiten, wobei zwischen den Rohrleitungseinheiten eine Dichtung angeordnet ist,
• 5 eine einen Ausschnitt A im Bereich von zwei miteinander verspannten Rohrleitungseinheiten aufweisende Schnittdarstellung eines Ausführungsbeispiels einer Rohrleitungsanordnung,
• 6 eine Detailansicht des in 5 dargestellten Ausschnitts A im Bereich der zwei miteinander verspannten Rohrleitungseinheiten,
• 7 eine Draufsicht auf eine eine Dichtung und einen Datenträger aufweisende Dichtungsvorrichtung mit Detailausschnitt B,
• 8 eine Seitenansicht einer eine Dichtung und einen Datenträger aufweisenden Dichtungsvorrichtung,
• 9 eine Detaildarstellung des in 7 gezeigten Detailausschnitts B,
• 10 eine Draufsicht auf eine weitere eine Dichtung und einen Datenträger aufweisende Dichtungsvorrichtung und
• 11 eine schematische Darstellung unterschiedlicher, bevorzugter Querschnitte eines Dichtungseinsatzes.

The invention is explained in more detail below with reference to the accompanying drawing, which shows

• 1 a sectional view of a pipeline and a pipe socket,
• 2 a sectional view of the pipeline and the pipe socket, wherein the pipe socket is pushed axially onto the pipe,
• 3 a sectional view of a pipeline unit,
• 4th a sectional view of two pipeline units, a seal being arranged between the pipeline units,
• 5 a sectional view of an exemplary embodiment of a pipeline arrangement having a detail A in the area of two pipe units braced together,
• 6th a detailed view of the in 5 Section A shown in the area of the two pipe units braced together,
• 7th a plan view of a sealing device having a seal and a data carrier with detail section B,
• 8th a side view of a sealing device having a seal and a data carrier,
• 9 a detailed representation of the in 7th shown detail section B,
• 10 a plan view of a further sealing device having a seal and a data carrier;
• 11 a schematic representation of different, preferred cross-sections of a sealing insert.

Unless otherwise stated, the following description relates to all the embodiments of a sealing device according to the invention illustrated in the drawing 1 for sealing a pipeline arrangement 2 .

The pipeline arrangement 2 has two a pipe central axis 3 having pipeline units 4th and a tensioning device 5 on. The pipeline units 4th include a pipeline 6th and a pipe socket 7th , with pipeline 6th and pipe socket 7th on the pipe center axis 3 are aligned.

The pipeline 6th has a pipe outer surface 8th , a pipe face 9 and a pipe outer diameter 10 on. Also is the pipeline 6th formed according to a specification with respect to a pipe length and a pipe bend, wherein in the illustrated embodiment a straight pipe 6th is used. In other non-illustrated embodiments, the pipe length and the pipe bend are designed differently.

The pipe socket 7th has a pipe socket inside diameter 11 and has a flange section face 12 comprehensive flange section 13 and one a pipe section inner surface 14th having pipe section 15th . In the flange section face 12 of the flange section 13 is a groove 16 to partially accommodate a sealing device 1 educated.

In addition, the pipe section has the inner surface 14th a structure 18th in the form of surveys 19th on. The pipe section inner surface 14th corresponds to the inner surface of the pipe socket 17th .

The pipe socket 7th is in the axial direction of the pipe center axis 3 axially on the pipeline 6th attached. Flange section face 12 and pipe face 9 are aligned flush with each other. In the embodiment shown, the pipe outer diameter is 10 and the pipe socket inside diameter 11 same size.

In another non-illustrated embodiment, the pipe outer diameter is 10 the pipeline 6th larger than the pipe socket inside diameter 11 of the pipe socket 7th . Thus, when the pipe socket is pushed on axially 7th on the pipeline 6th an interference fit is created. Such a press fit creates a non-positive connection of the pipeline 6th and pipe socket 7th here.

The pipeline unit 4th includes one on a pipeline 6th axially attached pipe socket 7th . In contrast to the in 2 The arrangement shown is in the 3 in the pipeline unit 4th the pipeline 6th by radial expansion, in particular of the pipe walls, in the pipe socket 7th by means of a press fit 20th fixed. The pipe socket 7th is therefore frictional with the pipeline 6th connected. Other conventional connection options, such as pipe socket welding 7th and pipeline 6th are possible in other embodiments, but not illustrated here.

The radial expansion is achieved by means of a tool, in particular a roll-in tool, and is also used as an adhesion expansion of the pipeline 6th designated. After the radial expansion is a cross-sectional area of the pipeline 6th in the area of the expansion larger than an original cross-sectional area of the pipeline 6th . This is due to the radial expansion of the pipeline 6th the expanded pipe inner diameter 21st in the area of an overlap of pipe sockets 7th and pipeline 6th larger than the original pipe diameter 22nd .

Through on the pipe section inner surface 14th arranged structure 18th in the form of surveys 19th is made by expanding the pipeline 6th in addition to a non-positive connection between the pipeline, there is also a positive connection 6th and pipe socket 7th produced. The structure 18th can also be designed in a different shape, for example as a groove or the like.

In other embodiments, not shown, the pipeline is before the radial expansion 6th the pipe section inner surface 14th and / or the pipe outer surface 8th at least partially structured.

Axially between the pipeline units 4th is a seal insert 23 having sealing device 1 arranged.

5 shows a section A in the area of two pipe units braced together 4th having a sectional view of an embodiment of a pipeline arrangement 2 .

The pipeline arrangement 2 has one axially between the on the flange portions 13 formed flange section end faces 12 the pipe socket 7th arranged sealing device 1 on. The sealing device 1 is configured to have a defined transition 24 between the two pipe units clamped together 4th to train. The defined transition 24 is caused by the tensioning on the sealing device 1 acting contact forces formed.

A detailed view of the in section A described below 5 in the area of the two pipe units clamped together 4th shows the defined transition 24 enlarged. Through the defined transition 24 there is an accumulation of residues or an accumulation of solids through the pipeline arrangement 2 flowing medium or through the pipeline arrangement 2 flowing media is reduced or does not take place.

In addition, the sealing device 1 a sealing insert 23 on. Through the seal insert 23 becomes a minimum axial distance 25th between the two pipeline units 4th defined so that the two pipe units 4th when tensioning the pipeline arrangement 2 Contact forces are exposed to the due to the seal insert 23 defined, axial minimum distance 25th are set.

The cross section is preferred 26th of the sealing insert 23 cross-shaped. Other preferred cross-sections 26th are for example in 11 shown and have a rectangular or circular or oval cross-section 26th on. Other exemplary embodiments not illustrated here have different cross sections 26th . Inside the seal insert 23 can be another reinforcement structure 27 , for example. A metal and / or wood core, be embedded in the sealing insert 23 gives a higher strength.

The pipeline arrangement 2 is made by means of a clamping device 5 axially clamped. To do this, the flange sections 13 the pipe socket 7th of the two pipeline units 4th by means of a clamping device 5 axially clamped together. In the illustrated embodiment, the tensioning device is 5 advantageously as a hinge clamp 28 educated. By acting as a joint bracket 28 trained clamping device 5 can the on the sealing device 13 acting contact pressure, which corresponds to a contact pressure based on the surface, in addition, z. B. by the hinge bracket 28 closing wing nut or the like. The clamping device 5 can also be designed as a flange-screw connection.

Alternatively, standard parts, such as, for example, measuring instruments, valves and flaps or the like, can also be used as a pipeline unit 4th serve and with another second pipeline unit 4th together a pipeline arrangement 2 form.

The seal insert 23 the sealing device 1 has one as a stop 29 trained seal insert face 30th . Through the seal insert 23 is or will thus be between the two pipeline units 4th a minimum axial distance 25th definable or defined. The pipe end faces 9 and / or the flange section end faces 12 limits in the tensioned state of the pipeline arrangement 2 to the seal insert end faces 30th of the sealing insert 23 the sealing device 1 at. This will be the minimum distance 25th between the two pipeline units 4th the pipe arrangement 2 and thus also on the sealing device 1 acting contact forces precisely adjusted.

The by means of the sealing insert 23 defined contact forces defined transition 24 is preferably designed so that the curvature 31 compared to an inside pipe diameter 21st forms an obtuse angle α. The obtuse angle α particularly preferably has an angle α between 100 ° and 170 °, very particularly preferably between 120 ° and 150 °. This ensures that residues from the pipeline arrangement 2 medium flowing through or the pipeline arrangement 2 flowing media can be reduced or prevented.

The sealing device 1 features one in a seal 32 arranged data carrier 33 , the electronic data memory that can be written or written to with seal-specific information 34 includes. The data carrier is preferred 33 the sealing device 1 as an RFID transponder 35 educated. The data store 34 of the data carrier 33 is thus writable and / or readable in an improved manner, in particular contactlessly, for example with a non-illustrated RFID reading and / or writing device. In particular, product, maintenance, production or service data are available at any time as seal-specific information directly on the sealing device. For example, on the disk 33 the production date, the next maintenance date, the condition of the seal itself, the date of the last inspection, etc.

The seal 32 is preferably designed as a flat seal, with materials such as. B. elastomers, pressed fiber, aramid fiber, carbon fiber, mineral fiber, metal, copper are available. Also jacketed sealing devices 1 , in particular sheathed flat seals, are preferred, these comprising a core covered by a PTFE or metal sheath, preferably steel or corrosion-resistant nickel alloys (any flat gasket material, e.g. fiber composite, PTFE, etc.). The sheathing protects the core against chemical attack from the medium to be sealed. The seal is preferred 32 made of rubber, particularly preferably of nitrile rubber or perforated rubber, silicone, polyethylene or polytetrafluoroethylene.

The seal 32 the sealing device 1 has a radial center axis about a seal assembly 36 extending sealing surface 37 on which one the disk 33 having sealing section 38 is arranged. That is seal section 38 is designed in the form of a pan handle. In the state of use, the pipe center axes correspond 3 and sealing device center axis 36 . In a non-illustrated embodiment, for example, the sealing section is missing 38 so that the disk 33 in poetry 32 is arranged. Also other arrangements in the sealing device 1 are possible and conceivable.

In a further preferred embodiment, the data carrier is 33 as part of the seal insert 23 educated. Such an embodiment is exemplified in 10 shown. This gives the advantages of using a seal 23 and disk 33 connectable to each other. In addition, it is easy to remove the data carrier 33 then no longer possible when in use.

The clamping device 5 is useful as a hinge bracket 28 formed and the sealing portion 38 is through a joint clamp joint of the clamping device 5 outwards.

1. a) Einbringen des Dichtungseinsatzes 23 in ein Werkzeug,
2. b) Vergießen des Werkzeugs mit Dichtungswerkstoff und
3. c) Ausbringen der hergestellten Dichtungsvorrichtung 1 aus dem Werkzeug.

The sealing insert arranged in the seal is preferred 23 with the seal 32 the sealing device 1 encapsulated, the method comprising the following steps:

1. a) Insertion of the sealing insert 23 in a tool,
2. b) Potting the tool with sealing material and
3. c) Removal of the sealing device produced 1 from the tool.

This method allows the one sealing insert to be produced quickly and inexpensively 23 having sealing device 1 . The method carried out is advantageously an injection molding method or a compression molding method.

A data carrier is preferred in step a) 33 extensive sealing use 23 introduced into the tool. This has the advantage that the seal-specific information of the sealing device 1 can be read out at any time.

It is also preferred in the 4th and 5 a pipeline system 39 shown, the piping system 39 a sealing device 1 and a pipeline arrangement 2 includes. Sealing device 1 and piping arrangement 2 are preferably designed according to the description of the figures.

Claims (14)

Sealing device (1) for sealing a pipeline arrangement (2), which has two pipeline units (4) having a pipeline central axis (3) and a clamping device (5), wherein a pipeline unit (4) has a pipeline outer surface (8), a pipeline end face (9 ) and a pipe (6) having a pipe outer diameter (10) and a pipe stub (7) having a pipe stub inner diameter (11), and the pipe stub (7) has a flange portion (13) having a flange portion end face (12) and a pipe portion inner surface (14) ) having pipe section (15), and wherein the clamping device (5) axially clamps the flange sections (13) of the pipe stubs (7) of the two pipeline units (4) with one another, the sealing device (1) in its position of use having an axially between the flange section end faces ( 12) the pipe socket (7) has arranged seal (32), thereby characterized in that the sealing device (1) comprises a sealing insert (23) which is arranged in the seal (32) and which is configured to define a minimum axial distance (25) between the two pipeline units (4). Sealing device (1) according to Claim 1 , characterized in that the sealing insert (23) has a rectangular or cruciform or circular or oval cross section (26). Sealing device (1) according to Claim 1 or 2 , characterized in that the sealing insert (23) of the seal (32) of the sealing device (1) has a sealing insert end face (30) designed as a stop (29). Sealing device (1) according to one of the preceding claims, characterized in that the sealing device (1) has a data carrier (33) arranged in the seal (32) which comprises an electronic data memory (34) that can be written or written to with seal-specific information. Sealing device (1) according to Claim 4 , characterized in that the data carrier (33) is designed as part of the sealing insert (23). Sealing device (1) according to Claim 4 or 5 , characterized in that the data memory (34) of the data carrier (33) can be read out. Sealing device (1) according to one of the Claims 4 to 6th , characterized in that the data memory (34) of the data carrier (33) can be read out contactlessly. Sealing device (1) according to one of the Claims 4 to 7th , characterized in that the data carrier (33) of the sealing device (1) is designed as an RFID transponder (35). Sealing device (1) according to one of the preceding claims, characterized in that the seal (32) is configured to form a defined transition (24) between the two pipe units (4) clamped to one another, so that residues of the pipe arrangement ( 2) flowing medium or the media flowing through the pipeline arrangement (2) does not take place. Sealing device (1) according to one of the preceding claims, characterized in that the seal (32) has a sealing jacket surface (37) which extends radially around a sealing device central axis (36) and on which a sealing section (38) containing the data carrier (33) is arranged . Sealing device (1) according to Claim 9 , characterized in that the clamping device (5) is designed as a hinge clamp (28) and the sealing section (38) can be or is guided outwards by a hinge clamp joint of the clamping device (5). Sealing device (1) according to one of the preceding claims, characterized in that the seal (32) is made from rubber, preferably from nitrile rubber or perforated rubber, silicone, polyethylene or polytetrafluoroethylene. Sealing device (1) according to one of the preceding claims, characterized in that the seal (32) is designed as a flat seal or profile seal or O-ring. Pipeline system (39) comprising a pipeline arrangement (2) and a sealing device (1) according to one of the Claims 1 to 13 .

Images