DE2352571C2 - Connection of a gas pipeline made of polyethylene with a metal gas pipeline - Google Patents
Connection of a gas pipeline made of polyethylene with a metal gas pipelineInfo
- Publication number
- DE2352571C2 DE2352571C2 DE2352571A DE2352571A DE2352571C2 DE 2352571 C2 DE2352571 C2 DE 2352571C2 DE 2352571 A DE2352571 A DE 2352571A DE 2352571 A DE2352571 A DE 2352571A DE 2352571 C2 DE2352571 C2 DE 2352571C2
- Authority
- DE
- Germany
- Prior art keywords
- connection
- gas
- polyethylene
- wall
- pipe section
- 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.)
- Expired
Links
Classifications
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- 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
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
- B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
- B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
- B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
- B29C66/52296—Joining tubular articles involving the use of a socket said socket comprising sealing elements, e.g. gaskets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
- B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
-
- 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
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
5555
Die Erfindung betrifft ein Anschlußstück zum unlösbaren, verdrehungssicheren Verbinden einer aus Polyäthylen bestehenden Gasrohrleitung mit einer metalli- sehen Gasrohrleitung kleineren Durchmessers, insbesondere für die Installation einer Gas-Hauseinführung.The invention relates to a connector for the permanent, twist-proof connection of a gas pipeline made of polyethylene with a metallic see gas pipeline of smaller diameter, especially for the installation of a gas house entry.
Bekanntlich werden in neuerer Zeit für die Gasversorgung in steigendem Umfang Rohrleitungen aus Polyäthylen verwendet, die im Erdboden verlegt werden. Hierbei stellt sich das Problem der Verbindung dieser Rohrleitungen mit bereits installierten metallischen Gasrohren, z. B. bei den Hauseinführungen. Gemäß denAs is well known, pipelines made of polyethylene, which are laid in the ground, are used to an increasing extent for the gas supply. This poses the problem of connecting these pipelines with already installed metallic ones Gas pipes, e.g. B. at the house lead-ins. According to the
bekanntgewordenen Vorschlägen werden hierfür übliche metallische Klemmverschraubungen benutzt, wie sie auch in Wasserleitusgsanlagen zum Verbinden von Kunststoffrohren mit Stahlrohren angewendet werden. Auch beim Einbau von Absperrorganen in ganzgeschweißter Ausführung mit Anschweißenden werden bisher Klemmverbindungen bzw. Flanschverbindungen verwendet Derartige Verbindungen haben jedoch den Nachteil, daß sie im Hinblick auf die Betriebssicherheit lösbar und nicht längskraftschlüssig sind. Bei Zagbeanspruchung ist ein Herausziehen des Stahl- bzw. PÄ-Rohres möglich. Hierbei kann eine Gasundichtheit an der Klemmverschraubung eintreten, z. B. bei der Installation oder Montage im Keller.known proposals are used for this purpose conventional metallic compression fittings, such as they are also used in water piping systems for connecting plastic pipes with steel pipes. Even when installing shut-off devices in fully welded design with weld-on ends previously used clamping connections or flange connections Such connections have the Disadvantage that they are detachable and not restrained in terms of operational safety. In the event of stressful stress, the steel or PÄ pipe can be pulled out. This can result in a gas leak enter the compression fitting, z. B. during installation or assembly in the basement.
Diese Nachteile werden mit der Erfindung vermieden. Sie hat sich zur Aufgabe gestellt, eine Verbindung zwischen einer Gasrohrleitung aus Polyäthylen und einer solchen aus Metall zu schaffen, die außer den Voraussetzungen für einen sicheren Betrieb der Gasleitungen auch denjenigen für eine einfache Montage bei der Installation einer Gas-Hauseinführung entsprichtThese disadvantages are avoided with the invention. She has set herself the task of establishing a connection to create between a gas pipeline made of polyethylene and one made of metal, except for the Requirements for safe operation of the gas lines also include those for easy installation corresponds to the installation of a gas house entry
Gelöst wird diese Aufgabe durch ein Anschlußstück, welches erfindungsgemäß in Form einer Übergangsmuffe aus Polyäthylen ausgebildet ist deren eines Anschlußende zum Verschweißen mit dem Ende der Polyäthylen-Gasrohrleitung dient und in deren anderem Anschlußende ein zum Verschweißen oder Verschrauben mit dem Ende des metallischen Gasrohres dienendes metallisches Rohrstück mit Preßsitz angeordnet ist welches den gleichen Durchmesser wie das hieran anzuschließende Gasrohr und an seinem dem Polyäthylen-Gasrohr zugewendeten Ende einen flanschartig ausgebildeten Dichtkegel aufweist der sich mit seiner konischen Dichtfläche an einem ringförmigen Vorsprung der Muffeninnenwand gasdicht anlegtThis object is achieved by a connector which, according to the invention, is designed in the form of a transition sleeve made of polyethylene, one end of which is used for welding to the end of the polyethylene gas pipeline and the other Connection end is arranged with a press fit for welding or screwing to the end of the metal gas pipe which has the same diameter as the gas pipe to be connected and a flange-like end at its end facing the polyethylene gas pipe has formed sealing cone which rests gas-tight with its conical sealing surface on an annular projection of the inner wall of the socket
Diese Einrichtung gewährleistet eine unlösbare und vor allen Dingen längskraftschlüssige Verbindung, bei der eine Beschädigung während der Montage weitgehend ausgeschlossen ist Durch die besondere Anordnung und Ausbildung des kurzen metallischen Rohrstückes innerhalb der Übergangsmuffe ist die Gasdichtigkeit der Verbindung sichergestelltThis facility ensures a permanent and, above all, restrained connection which is largely excluded from damage during assembly. The special arrangement and design of the short metal pipe section within the transition sleeve ensures that the connection is gas-tight
Mit dem weiteren Merkmal sieht die Erfindung vor, daß die Übergangsmuffe in ihrem das metallische Rohrstück aufnehmenden Anschlußende ein das Rohrstück umschließendes hülsenförmig ausgebildetes und mit der Innenwand des Anschlußendes verschweißtes Einsatzstück aus Polyäthylen aufweist, welches sich gegen den ringförmigen Vorsprung abstützt und gegen die Außenfläche des metallischen Rohrstücks durch mindestens einen in seinem Umfang eingebetteten O-Ring aus einem wärme- sowie erdgasbeständigen Werkstoff abgedichtet ist Damit wird außer einer weiteren Verbesserung der Dichtigkeit erreicht daß eine Polyäthylen-Übergangsmuffe bestimmter Abmessung für Hauseinführungs-Gasrohre unterschiedlicher Durchmesser verwendet werden kann, indem in dem Anschlußende der Muffe nur ein Einsatzstück entsprechenden Innendurchmessers angeordnet wird, was sich im Hinblick auf die Montage, Lagerhaltung u. dgl. wirtschaftlich auswirktWith the further feature, the invention provides that the transition sleeve in its the metallic Pipe section receiving connection end a sleeve-shaped and enclosing the pipe section with the inner wall of the connection end welded insert made of polyethylene, which is supported against the annular projection and against the outer surface of the metallic pipe section by at least one embedded in its circumference O-ring made of a heat and natural gas resistant material is sealed Polyethylene transition sleeve of certain dimensions for house entry gas pipes of different sizes Diameter can be used by only an insert of corresponding inner diameter is arranged in the connection end of the sleeve, which is in terms of assembly, warehousing and the like
So kann beispielsweise das Anschlußende mit dem Stirnende des Polyäthylen-Gasrohres nach dem Heizelement-Stumpfschweißverfahren verbunden werden. Eine Verbindung durch Einschieben des Rohres in das Muffenende und somit eine Verschweißung mit der Muffeninnenwand, z. B. nach dem Polyfusions-Schweißverfahren, ist im Hinblick auf die Verarbeitung kleine-For example, the connection end can be connected to the front end of the polyethylene gas pipe by the heating element butt welding process. A connection by pushing the pipe into the socket end and thus welding to the Socket inner wall, z. B. after the polyfusion welding process, is with regard to the processing small-
rer Dimensionen (ζ. B. Hauszuleitungen) einer Heizelement-Stumpfschweißung vorzuziehen. Für eine vereinfachte Montage wird erfindungsgemäß weiterhin vorgeschlagen, eine für das Verbinden der Enden thermoplastischer Kunststoffrohre bekannte Elektroschweißmuffe in der V/eise zu verwenden, daß in der Innenwand mindestens eines Anschlußendes der Übergcngsmuffe eine zum Verschweißen mit dem Ende des Polyäthylen-Gasrohres und/oder des Einsatzstückes dienende Heizdrahtwicklung in an sich bekannter Weise eingebettet istrer dimensions (e.g. house supply lines) of a heating element butt weld preferable. For a simplified assembly it is further proposed according to the invention that an electrofusion socket known for joining the ends of thermoplastic pipes to be used in such a way that in the inner wall at least one connection end of the transition sleeve one used for welding to the end of the polyethylene gas pipe and / or the insert Heating wire winding is embedded in a manner known per se
Ein weiteres Merkmal der Erfindung sieht vor, daß das metallische Rohrstück mit einer Verschraubung an der Übergangsmuffe befestigt ist Dadurch wird der gasdichte Preßsitz des kurzen metallischen Rohrstücks innerhalb des Anschlußendes und außerdem die Verdrehungssicherheit der Verbindung bei Her Montage, und im Betrieb verstärktAnother feature of the invention provides that the metallic pipe section with a screw connection the transition sleeve is attached This creates the gas-tight interference fit of the short metal pipe section within the connection end and also the security against twisting of the connection when assembling, and reinforced in operation
Schließlich wird mit der Erfindung für die Installation einer Mauerdurchführung empfohlen, daß die Übergangsmuffe von einem mit einer Wandplatte verschweißten Schutzrohr umgeben und mit der Verschraubung des metallischen Rohrstücks an der Wandplatte befestigt istFinally, with the invention for installation a wall duct recommended that the transition sleeve surrounded by a protective tube welded to a wall plate and with the screw connection of the metallic pipe section is attached to the wall plate
In den Zeichnungen sind zwei Ausführungsbeispiele der Erfindung im Längsschnitt dargestellt Es zeigtIn the drawings, two exemplary embodiments of the invention are shown in longitudinal section
A b b. 1 ein Anschlußstück mit dem Polyäthylen- und dem Metall-Gasrohr,A b b. 1 a connection piece with the polyethylene and the metal gas pipe,
A b b. 2 die Anordnung des Anschlußstücks bei einer Mauerdurchführung undA b b. 2 the arrangement of the connector in a wall duct and
A b b. 3 und 4 jeweils ein Ende des metallischen Rohrstücks.A b b. 3 and 4 each have one end of the metallic pipe section.
Das Anschlußstück ist aus der Polyäthylen-Übergangsmuffe 1 gebildet, deren Anschlußende 2 zur Aufnahme des Endes des aus Polyäthylen bestehenden Gaszuführungsrohres 3 dient und in dessen Innenwand die zum Verschweißen vorgesehene Heizdrahtwicklung 4 eingebettet ist. Die Anschlüsse für die Stromzufuhr sind nicht dargestellt In dem Anschlußende 5, dessen Wand dicker als das Anschlußende 2 ist, ist das metallische Rohrstück 6 mit Preßsitz angeordnet Dieses weist an seinem Ende den flanschartigen Dichtkegel 7 auf, der sich einerseits mit seiner konischen Dichtfläche 8 gegen den ringförmigen V01 sprung 9 der Muffeninnenwand und andererseits mit seiner Außenfläche 10 gegen das Stirnende des Polyäthylen-Gasrohres 3 abstützt In der Innenwand des Anschlußendes 5 sind zur Abdichtung die O-Ringe 11 und 12 eingebettet. Diese bestehen aus einem bis 2800C wärmebeständigen synthetischen Kautschuk (»Viton«). An dem freien Ende 13 des Rohrstücks 6 wird das nicht dargestellte metallische Gasrohr, welches den gleich großen Durchmesser wie das Rohrstück hat, gasdicht angeschraubt oder angeschweißt Die Verschraubung 14 dient zur verdrehungssicheren Befestigung des Rohrstücks 6.The connection piece is formed from the polyethylene transition sleeve 1, the connection end 2 of which is used to receive the end of the gas supply pipe 3 made of polyethylene and the heating wire winding 4 provided for welding is embedded in the inner wall of the latter. The connections for the power supply are not shown.In the connection end 5, the wall of which is thicker than the connection end 2, the metal pipe section 6 is arranged with a press fit the annular V01 jump 9 of the socket inner wall and on the other hand with its outer surface 10 is supported against the front end of the polyethylene gas pipe 3. In the inner wall of the connection end 5, the O-rings 11 and 12 are embedded for sealing. These consist of a synthetic rubber (»Viton«) which is heat-resistant up to 280 ° C. The metal gas pipe (not shown), which has the same diameter as the pipe section, is screwed or welded gas-tight to the free end 13 of the pipe section 6. The screw connection 14 is used to secure the pipe section 6 against rotation.
Bei dem in A b b. 2 dargestellten Ausführungsbeispiel weist das Anschlußende 5 der Muffe 1 den gleichen Innendurchmesser wie das Anschlußende 2 auf. Zur gasdichten Aufnahme des Rohrstücks 6 dient hier das aus Polyäthylen bestehende, hülsenförmige Einsatzstück 15, welches mitteis der in der Innenwand des Anschlußendes eingebetteten Heizdrahtwicklung 16 elektrisch verschweißt istIn the case of the in A b b. 2, the connection end 5 of the sleeve 1 has the same Inner diameter like the connection end 2. The serves here for the gas-tight reception of the pipe section 6 made of polyethylene, sleeve-shaped insert 15, which middle of the in the inner wall of the connection end embedded heating wire winding 16 is electrically welded
Für die Installation einer Mauerdurchführung ist die Rohrverbindung von dem Schutzrohr 17 umgeben, welches mit der an der Innenwand der Mauer angebrachten Platte 18 verschweißt ist Die Befestigung der Übergangsmuffe an der Wandplatte erfolgt mit der Verschraubung 14.For the installation of a wall duct is the Pipe connection surrounded by the protective tube 17, which is attached to the on the inner wall of the wall Plate 18 is welded. The transition sleeve is attached to the wall plate with the Screw connection 14.
Das freie Ende des Rohrstücks 6 ist mit dem Gewinde 19 zum Verschrauben mit dem Gasrohr versehen (A b b. 3), oder es weist für eine Verschweißung die Fase 20 (Abb. 4) auf.The free end of the pipe section 6 is provided with the thread 19 for screwing to the gas pipe (A b b. 3), or it has the bevel 20 (Fig. 4) for welding.
Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2352571A DE2352571C2 (en) | 1973-10-17 | 1973-10-17 | Connection of a gas pipeline made of polyethylene with a metal gas pipeline |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2352571A DE2352571C2 (en) | 1973-10-17 | 1973-10-17 | Connection of a gas pipeline made of polyethylene with a metal gas pipeline |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2352571B1 DE2352571B1 (en) | 1974-10-24 |
DE2352571C2 true DE2352571C2 (en) | 1975-06-12 |
Family
ID=5895928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2352571A Expired DE2352571C2 (en) | 1973-10-17 | 1973-10-17 | Connection of a gas pipeline made of polyethylene with a metal gas pipeline |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2352571C2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL182906C (en) * | 1975-10-17 | 1988-06-01 | Draka Polva Bv | DRAWN RESISTANT TRANSITION COUPLING FOR A METAL AND PLASTIC TUBE PART. |
DE3160387D1 (en) * | 1980-05-23 | 1983-07-07 | Fischer Ag Georg | House-inlet for medium conduits, especially for gas and water conduits |
US4508368A (en) * | 1982-03-01 | 1985-04-02 | R & G Sloane Mfg. Co., Inc. | Plastic pipe joint |
US5150922A (en) * | 1989-01-11 | 1992-09-29 | Osaka Gas Co., Ltd. | Electrofusion joint and hot water supply header using the same |
WO1992018322A1 (en) * | 1991-04-19 | 1992-10-29 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Pipe joint member |
GB2264765B (en) * | 1992-02-27 | 1995-04-12 | British Gas Plc | Method of lining a pipeline |
IL101297A (en) * | 1992-03-19 | 1993-07-31 | Plasson Maagan Michael Ind Ltd | Adaptor for use with electrofusion fittings |
WO1995016557A2 (en) * | 1993-12-15 | 1995-06-22 | Tokushu, Kogyo Kabushikigaisha | Electrofusion fastening apparatus |
EP0744573A1 (en) * | 1995-05-24 | 1996-11-27 | KE-KELIT Kunststoffwerk Gesellschaft m.b.H. | Connector for pipes or hoses comprising a metal support element coated with a weldable plastic |
DE102022104515A1 (en) * | 2022-02-25 | 2023-08-31 | Frank Gmbh | Electrofusion socket for welding and method for connecting two pieces of pipe with subsequent medium |
-
1973
- 1973-10-17 DE DE2352571A patent/DE2352571C2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2352571B1 (en) | 1974-10-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 | ||
EGA | New person/name/address of the applicant | ||
8339 | Ceased/non-payment of the annual fee |