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DE3818582A1 - Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes - Google Patents

Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes

Info

Publication number
DE3818582A1
DE3818582A1 DE19883818582 DE3818582A DE3818582A1 DE 3818582 A1 DE3818582 A1 DE 3818582A1 DE 19883818582 DE19883818582 DE 19883818582 DE 3818582 A DE3818582 A DE 3818582A DE 3818582 A1 DE3818582 A1 DE 3818582A1
Authority
DE
Germany
Prior art keywords
profile
flange
pipe
connecting element
polygonal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19883818582
Other languages
German (de)
Inventor
Hans Ludwig
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRINKMANN HEINRICH ANLAGENVERP
Original Assignee
BRINKMANN HEINRICH ANLAGENVERP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BRINKMANN HEINRICH ANLAGENVERP filed Critical BRINKMANN HEINRICH ANLAGENVERP
Priority to DE19883818582 priority Critical patent/DE3818582A1/en
Publication of DE3818582A1 publication Critical patent/DE3818582A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/12—Flanged joints specially adapted for particular pipes
    • F16L23/14—Flanged joints specially adapted for particular pipes for rectangular pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/14—Flanged joints

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes, comprising a load-bearing member which is provided with a flange and is intended for fitting, in particular welding, to the pipe end, in the case of which the load-bearing member (3) is formed by a grooved profile strip having a length corresponding approximately to the edge length of the polygonal pipe (1), and the flange (2) is formed by a flange profile which is undercut with respect to the load-bearing member (3) and is essentially in the form of a quarter round bar which matches up with the flange profile of the opposite pipe to form a half profile, undercut on both sides, the two flange profiles being held against one another by means of a slit bracing pipe (7) which has a slightly smaller internal diameter and/or radius of curvature than the flange profile (2). The load-bearing member (3) may be formed by an angle profile or a U-profile of an opening width corresponding to the thickness of the pipe wall, on one side cheek of which the flange profile (2) is fitted integrally in a flush manner. The quarter profile is provided with a transverse grooving at its two ends, in extension of the undercuts (4) of the two adjacent connecting elements. <IMAGE>

Description

Die Erfindung geht aus von einer Flanschverbindung gemäß dem Ober­ begriff des Patentanspruches 1.The invention is based on a flange connection according to the Ober Concept of claim 1.

Bei der Installation von Entlüftungsanlagen in der chemischen Indu­ strie kommt es - neben der Chemikalienbeständigkeit - insbesondere auf eine absolut flüssigkeitsdichte Herstellung der Entlüftungsrohre an, um einen Austritt von sich eventuell bildendem Kondensat und Abtropfen in die Arbeitsräume absolut auszuschließen. Aus diesem Grunde werden Entlüftungs­ leitungen für diesen Zweck heute aus Rohrstücken aus hochwertigem, chemi­ kalienbeständigem Kunststoff montiert, die bisher entweder durch direktes stumpfes Verschweißen der Rohrenden oder durch Verschweißen eines Flansch­ rahmens beidseitig an den Rohrenden und anschließendes Verschrauben unter Einlegen einer Dichtung miteinander verbunden werden. Das beim Stumpf­ schweißen von Kunststoffrohren auftretenden Probleme sind allgemein hin­ länglich bekannt, aus welchem Grunde im allgemeinen die Flanschverbindung bevorzugt wird, die jedoch einen außerordentlich hohen Montageaufwand erfordert. Dies hat seine Ursache darin, daß das Anschweißen des Flansch­ rahmens zur Gewährleistung der geforderten Dichtigkeit mit mehreren - min­ destens zwei - Schweißnähten erfolgen muß und ein Schraubenabstand von maximal 70 mm verlangt wird, was bei den Größen der für den genannten Zweck eingesetzten Rohre das Setzen einer Vielzahl von Schrauben erfor­ dert. Dasselbe gilt selbstverständlich auch im Falle der Notwendigkeit des Austausches eines Rohrstückes bei Auftreten eines Schadens.When installing ventilation systems in the chemical industry, it is - in addition to chemical resistance - particularly important that the ventilation pipes are manufactured absolutely liquid-tight in order to absolutely prevent any condensate from forming and dripping into the work rooms. For this reason, ventilation pipes for this purpose are now assembled from pipe sections made of high-quality, chemical-resistant plastic, which have so far been connected either directly by butt welding the pipe ends or by welding a flange frame on both sides of the pipe ends and then screwing in with a seal. The problems encountered in the butt welding of plastic pipes are generally well known, for which reason the flange connection is generally preferred, but which requires an extremely high amount of assembly work. This is due to the fact that the flange frame has to be welded on to ensure the required tightness with several - at least two - weld seams and a screw spacing of a maximum of 70 mm is required, which sets the size of the pipes used for the purpose mentioned a variety of screws required. The same applies of course also in the case of the need to replace a pipe section when damage occurs.

Der vorliegenden Erfindung liegt als Aufgabe die Schaffung einer Ver­ bindung für mehreckige Kunststoffrohre zugrunde, die eine einfache Montage der Leitung ermöglicht und eine absolut dichte Verbindung von Rohrstücken gewährleistet. Diese Aufgabe wird mit einer Verbindung mit den im Patent­ anspruch 1 wiedergegebenen Merkmalen gelöst.The present invention has for its object to provide a Ver binding for polygonal plastic pipes that are easy to assemble enables the pipe and an absolutely tight connection of pipe sections guaranteed. This task is done with a link to that in the patent claim 1 reproduced features solved.

Weitere Ausführungsformen und Vorteile ergeben sich aus der nachfol­ genden Beschreibung, in der die Erfindung anhand der beiliegenden Zeich­ nung beispielsweise erläutert ist. Es zeigenFurther embodiments and advantages result from the following the description in which the invention with reference to the accompanying drawing voltage is explained for example. Show it

Fig. 1 eine Rohrverbindung gemäß Erfindung im Schnitt, Fig. 1 shows a pipe joint according to the invention in section;

Fig. 2 eine andere Ausführungsform eines Verbindungsprofils, Fig. 2 shows another embodiment of a connecting profile,

Fig. 3 eine Teilseitenansicht des Flanschprofils im Endbereich. Fig. 3 is a partial side view of the flange profile in the end region.

Das in der Zeichnung - Fig. 1 - wiedergegebene Verbindungselement zur luft- und flüssigkeitsdichten Verbindung von mehreckigen, insbesondere viereckigen Rohren 1 aus Kunststoff besteht aus einem mit einem Flansch 2 versehenen, der Anbringung, insbesondere Verschweißen mit dem Rohrende be­ stimmten Träger 3 dadurch gekennzeichnet, daß der Träger 3 von einer ge­ kehlten Profilleiste mit einer etwa der Kantenlänge des Mehrkantrohres 1 entsprechenden Länge und der Flansch 2 von einem mit dem Rohr 1 eine Hin­ terschneidung 4 einschließenden, im wesentlichen die Form eines sich mit dem Flanschprofil des Gegenrohres zu einem beidseitig hinterschnittenen Halbprofil ergänzenden Viertel-Rundstabes gebildet ist, die mittels eines geschlitzten Spannrohres 7 gegeneinander gehalten sind, das einen gering­ fügig geringeren Innendurchmesser bzw. Krümmungsradius als das Flansch­ profil 2 aufweist.The - shown in the drawing - Fig. 1 - connecting element for airtight and liquid-tight connection of polygonal, in particular square tubes 1 made of plastic consists of a flange 2 provided, the attachment, in particular welding to the tube end be certain carrier 3 characterized, that the carrier 3 from a ge kehlten profiled strip with an approximately the side length of the polygonal tube 1 corresponding length and the flange 2 inclusive of one with the tube 1 a Hin terschneidung 4, substantially the shape of a to a both sides undercut with the flange section of the counter tube Half profile complementary quarter-round rod is formed, which are held against each other by means of a slotted tension tube 7 , which has a slightly smaller inner diameter or radius of curvature than the flange profile 2 .

Im Falle der in Fig. 1 wiedergegebenen Ausführungsform ist der Träger 3 von einem - in achsparalleler Richtung überschiebbaren - U-profil einer der Stärke der Rohrwandung entsprechenden Öffnungsweite gebildet ist, an dessen einer Seitenwange das Flanschprofil 2 materialschlüssig bündig angebracht ist, er kann jedoch auch in der in Fig. 2 wiedergegebenen Weise von einem - seitlich einschiebbaren - Winkelprofil 6 gebildet sein, dessen Innenschenkel bündig mit der Innenfläche des Rohres endet, so daß eine nicht unterbrochene Ebene gebildet wird, über die eventuell aus dem ge­ führten Gas ausfallendes Kondensat bei entsprechend schwach geneigter Mon­ tage des Rohres ungehindert abfließen und gesammelt aufgefangen werden kann. Das Viertelprofil ist - siehe Fig. 3 - an seinen beiden Enden in (nach der Montage) Verlängerung der Hinterschneidungen 4 der beiden be­ nachbarten Verbindungselemente mit einer Querkehlung 5 versehen.In the case of the embodiment shown in FIG. 1, the carrier 3 is formed by a U-profile which can be pushed over in the axially parallel direction and has an opening width corresponding to the thickness of the tube wall, on one side wall of which the flange profile 2 is flush with the material, but it can also in the manner shown in Fig. 2 by a - laterally insertable - be formed angle profile 6 , whose inner leg ends flush with the inner surface of the tube, so that an uninterrupted plane is formed, over which condensate possibly precipitating out of the gas at accordingly slightly inclined days of the pipe can flow freely and can be collected. The quarter profile is - see Fig. 3 - provided at its two ends in (after assembly) extension of the undercuts 4 of the two adjacent connecting elements with a cross groove 5 .

Die Montage gestaltet sich außerordentlich einfach. Es wird das Ver­ bindungprofil 2, 3 auf das Rohrende aufgesetzt und mittels einer Schweiß­ naht mit dem Rohrkörper verbunden. Nach stirnseitigem Gegeneinanderlegen der Flansche 2 erfolgt die Verbindung durch einfaches Überschieben des Spannrohres 7 über das so gebildete Halbprofil. Hierbei wird einerseits durch die Querkehlung 5 des beidseitig benachbarten Profils in Verlän­ gerung der Hinterschneidung das ungehinderte Überschieben auch bei Auf­ bringung eines geschlosenen Rahmens auf das Rohrende ermöglicht und andererseits die feste Verbindung dadurch hergestellt, daß sich das einen kleineren Krümmungsradius als das Flanschprofil aufweisende Spannrohr sowohl im Bereich der Hinterschneidung bzw. auf der inneren Profilseite als auch in der Klemmrohrmitte in zwei Linien zu einer stabilen Verbindung fest um den Flansch spannt.The assembly is extremely simple. The connection profile 2 , 3 is placed on the pipe end and welded to the pipe body. After the flanges 2 have been placed against one another on the end face, the connection is made by simply sliding the tensioning tube 7 over the half-profile formed in this way. Here, on the one hand by the cross groove 5 of the mutually adjacent profile in lengthening of the undercut, the unimpeded pushing is also possible when fitting a closed frame to the pipe end and, on the other hand, the fixed connection is established by the fact that the clamping pipe has a smaller radius of curvature than the flange profile in the area of the undercut or on the inner profile side as well as in the middle of the clamping tube in two lines to form a stable connection firmly around the flange.

Claims (4)

1. Verbindungselement zur luft- und flüssigkeitsdichten Verbindung von mehreckigen, insbesondere viereckigen Rohren aus Kunststoff, bestehend aus einem mit einem Flansch versehenen, der Anbringung, insbesondere Ver­ schweißen mit dem Rohrende bestimmten Träger, dadurch gekennzeichnet, daß der Träger (3) von einer gekehlten Profilleiste mit einer etwa der Kanten­ länge des Mehrkantrohres (1) entsprechenden Länge und der Flansch (2) von einem gegenüber dem Träger (3) hinterschnittenen und im wesentlichen die Form eines sich mit dem Flanschprofil des Gegenrohres zu einem beidseitig hinterschnittenen Halbprofil ergänzenden Viertel-Rundstabes gebildet ist, die mittels eines geschlitzten Spannrohres (7) gegeneinander gehalten sind, das einen geringfügig geringeren Innendurchmesser bezw. Krümmungs­ radius als das Flanschprofils (3) aufweist.1. Connecting element for airtight and liquid-tight connection of polygonal, in particular square pipes made of plastic, consisting of a flange provided, the attachment, in particular welding with the pipe end certain carrier, characterized in that the carrier ( 3 ) of a grooved Profile bar with a length approximately corresponding to the edges of the polygonal tube ( 1 ) and the flange ( 2 ) of an undercut with respect to the support ( 3 ) and essentially the shape of a quarter-round rod which complements the flange profile of the counter tube to form a half-profile undercut on both sides is formed, which are held against each other by means of a slotted tensioning tube ( 7 ) which bezw a slightly smaller inner diameter. Radius of curvature than the flange profile ( 3 ). 2. Verbindungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Träger (2) von einem U-profil einer der Stärke der Rohrwandung entspre­ chenden Öffnungsweite gebildet ist, an dessen einer Seitenwange das Flanschprofil (3) materialschlüssig bündig angebracht ist.2. Connecting element according to claim 1, characterized in that the carrier ( 2 ) is formed by a U-profile one of the thickness of the pipe wall corre sponding opening width, on one side wall of which the flange profile ( 3 ) is flush with the material. 3. Verbindungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Träger (3) von einem Winkelprofil (6) gebildet ist, dessen Innenschenkel bündig mit der Innenfläche des Rohres endet.3. Connecting element according to claim 1, characterized in that the carrier ( 3 ) is formed by an angle profile ( 6 ), the inner leg of which ends flush with the inner surface of the tube. 4. Verbindungselement nach einem der Ansprüche 1 bis 3, dadurch ge­ kennzeichnet, daß das Viertelprofil an seinen beiden Enden in Verlängerung der Hinterschneidungen (4) der beiden benachbarten Verbindungselemente mit einer Querkehlung (5) versehen ist.4. Connecting element according to one of claims 1 to 3, characterized in that the quarter profile is provided at its two ends in extension of the undercuts ( 4 ) of the two adjacent connecting elements with a cross groove ( 5 ).
DE19883818582 1988-06-01 1988-06-01 Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes Withdrawn DE3818582A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883818582 DE3818582A1 (en) 1988-06-01 1988-06-01 Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883818582 DE3818582A1 (en) 1988-06-01 1988-06-01 Connecting element for the air-tight and fluid-tight connection of polygonal, in particular square, plastic pipes

Publications (1)

Publication Number Publication Date
DE3818582A1 true DE3818582A1 (en) 1989-12-07

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333918A (en) * 1993-03-23 1994-08-02 Crout James O Unitary brazed tubing fitting assembly with deformed sealing web
AT401295B (en) * 1992-02-28 1996-07-25 Hesonwerk Luft Und Wassertechn VENTILATION CHANNEL
US6895670B1 (en) * 2003-03-13 2005-05-24 Rasp, Inc. Method of attaching a self-aligning flange to a vacuum pipe and forming a large diameter extruded pipe
US20140265311A1 (en) * 2013-03-14 2014-09-18 Composite Fluid Transfer, LLC Inner coupler for joining non-metallic pipe method and system
CN108980488A (en) * 2018-09-26 2018-12-11 中建七局第二建筑有限公司 Flange and construction for air hose connection
CN110925171A (en) * 2018-09-20 2020-03-27 安徽美芝制冷设备有限公司 Cylinder head assembly and compressor
DE202020106632U1 (en) 2020-11-19 2022-02-24 Mz Plastic Gmbh Plastic ventilation duct system with flange connection
US12005630B2 (en) 2021-09-30 2024-06-11 Composite Fluid Transfer LLC Method for manufacturing a reinforced composite pipe using compression techniques

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918501U (en) * 1964-05-08 1965-06-24 Kunststoff Fabrik Gebrueder An PIPE MADE OF PLASTIC AND OVERFLOW RING AS A PIPE CONNECTION.
CH429332A (en) * 1964-10-02 1967-01-31 Rollmaplast Ag Plastic pipe with pipe coupling part
CH538626A (en) * 1970-12-09 1973-06-30 Sandvikens Jernverks Ab Pipe connection
GB1451190A (en) * 1972-06-08 1976-09-29 English Clays Lovering Pochin Coupling arrangements between pipes
DE2900773A1 (en) * 1979-01-10 1980-07-17 Thyssen Plastik Anger Kg Plastics pipe flanged coupling - has ring with indentations on face away from join with sloping surface between
DE3005790A1 (en) * 1979-02-23 1980-09-04 Fischer Ag Georg PIPE COUPLING

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1918501U (en) * 1964-05-08 1965-06-24 Kunststoff Fabrik Gebrueder An PIPE MADE OF PLASTIC AND OVERFLOW RING AS A PIPE CONNECTION.
CH429332A (en) * 1964-10-02 1967-01-31 Rollmaplast Ag Plastic pipe with pipe coupling part
CH538626A (en) * 1970-12-09 1973-06-30 Sandvikens Jernverks Ab Pipe connection
GB1451190A (en) * 1972-06-08 1976-09-29 English Clays Lovering Pochin Coupling arrangements between pipes
DE2900773A1 (en) * 1979-01-10 1980-07-17 Thyssen Plastik Anger Kg Plastics pipe flanged coupling - has ring with indentations on face away from join with sloping surface between
DE3005790A1 (en) * 1979-02-23 1980-09-04 Fischer Ag Georg PIPE COUPLING

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401295B (en) * 1992-02-28 1996-07-25 Hesonwerk Luft Und Wassertechn VENTILATION CHANNEL
US5333918A (en) * 1993-03-23 1994-08-02 Crout James O Unitary brazed tubing fitting assembly with deformed sealing web
US6895670B1 (en) * 2003-03-13 2005-05-24 Rasp, Inc. Method of attaching a self-aligning flange to a vacuum pipe and forming a large diameter extruded pipe
US20140265311A1 (en) * 2013-03-14 2014-09-18 Composite Fluid Transfer, LLC Inner coupler for joining non-metallic pipe method and system
CN110925171A (en) * 2018-09-20 2020-03-27 安徽美芝制冷设备有限公司 Cylinder head assembly and compressor
CN108980488A (en) * 2018-09-26 2018-12-11 中建七局第二建筑有限公司 Flange and construction for air hose connection
DE202020106632U1 (en) 2020-11-19 2022-02-24 Mz Plastic Gmbh Plastic ventilation duct system with flange connection
US12005630B2 (en) 2021-09-30 2024-06-11 Composite Fluid Transfer LLC Method for manufacturing a reinforced composite pipe using compression techniques

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