DE3512331C1 - Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection - Google Patents

Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection

Info

Publication number
DE3512331C1
DE3512331C1 DE3512331A DE3512331A DE3512331C1 DE 3512331 C1 DE3512331 C1 DE 3512331C1 DE 3512331 A DE3512331 A DE 3512331A DE 3512331 A DE3512331 A DE 3512331A DE 3512331 C1 DE3512331 C1 DE 3512331C1
Authority
DE
Germany
Prior art keywords
connecting sleeve
pipe
connection
pipe connection
sleeve
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
Application number
DE3512331A
Other languages
German (de)
Inventor
Heinz 4330 Mülheim Unewisse
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE3512331A priority Critical patent/DE3512331C1/en
Priority to DE8686730034T priority patent/DE3661963D1/en
Priority to EP86730034A priority patent/EP0198789B1/en
Priority to AT86730034T priority patent/ATE40454T1/en
Priority to JP61043897A priority patent/JPS61233286A/en
Application granted granted Critical
Publication of DE3512331C1 publication Critical patent/DE3512331C1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions

Abstract

1. A pipe connection for the localised laying of thin-walled line pipes made of corrosion-resistant or high-alloy rustproof steel for water and heating installations, with a deformable connecting sleeve (2), also thin-walled, which is pushed onto the pipe ends (11, 12) and is made of the same type of material, the ends of which are formed as tori and have a sealing ring (3) disposed therein, surround the pipe ends (11, 12) with a press fit, and which has a copper working part (1) serving for cathodic protection against corrosion and which is in electrically conductive contact with an area of the pipe ends (11, 12) and the connecting sleeve (2), characterised in that a copper ring (1) is disposed inside the connecting sleeve (2) on the outer end of each pipe end (5).

Description

3030th

Die Erfindung betrifft eine Rohrverbindung gemäß Oberbegriff des Patentanspruchs 1 und eine Verbindungshülse für diese Rohrverbindung.The invention relates to a pipe connection according to the preamble of claim 1 and a connecting sleeve for this pipe connection.

Bei einer derartigen, aus der DE-OS 33 03 505 bekannten Rohrverbindung dient eine zwischen der Außenfläche des Rohrendes und der es umschließenden Innenfläche der Verbindungshülse angeordnete Kupferhülse als kathodischer Korrosionsschutz.In such, from DE-OS 33 03 505 known A pipe connection is used between the outer surface of the pipe end and the one surrounding it Copper sleeve arranged on the inner surface of the connecting sleeve as cathodic corrosion protection.

Der Erfindung liegt die Aufgabe zugrunde, eine Rohrverbindung der gattungsgemäßen Art so auszubilden, daß mit wesentlich geringerem Kupferaufwand ein gleichwertiger kathodischer Korrosionsschutz erreicht wird.The invention is based on the object of designing a pipe connection of the generic type in such a way that that an equivalent cathodic corrosion protection is achieved with significantly less copper expenditure will.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß im Inneren der Verbindungshülse am äußeren Ende eines jeden Rohrendes ein Kupferring angeordnet ist.This object is achieved according to the invention in that in the interior of the connecting sleeve at the outer end a copper ring is arranged at each pipe end.

Die Verbindungshülse für die Rohrverbindung ist in weiterer Ausbildung des Erfindungsgegenstandes im mittleren Teil mit einer ringförmigen Eindrückung versehen, wobei im Innern der Verbindungshülse vor der ringförmigen Eindrückung an jeder Seite der Kupferring angeordnet ist.The connecting sleeve for the pipe connection is in a further development of the subject matter of the invention central part provided with an annular indentation, with the inside of the connecting sleeve in front of the annular indentation is arranged on each side of the copper ring.

Der hiermit zu erzielende Vorteil besteht darin, daß ein kathodischer Korrosionsschutz mit geringem Aufwand, nämlich dem Einsetzen eines Kupferringes, vor jedem Rohrende erreicht werden kann. Ein solcher Kupferring wird auf jeder Seite in die Verbindungshülse bis an den ringförmigen Anschlag hineingeschoben. Daran anschließend wird die Verbindungshülse auf ein Rohrende bis zum Anschlag an den Kupferring aufgeschoben und dann das andere Rohrende in die Verbindungshülse bis zum Anschlag an den anderen Kupferring hineingeschoben.The advantage to be achieved with this is that cathodic corrosion protection with little effort, namely the insertion of a copper ring, which can be achieved in front of each pipe end. Such a The copper ring is pushed into the connecting sleeve on each side up to the ring-shaped stop. The connecting sleeve is then pushed onto one end of the pipe up to the stop on the copper ring and then the other end of the pipe into the connecting sleeve up to the stop on the other copper ring pushed in.

Die in der Verbindungshülse vorhandenen Kupferringe bewirken einen aktiven elektrochemischen, kathodisehen Korrosionsschutz des nichtrostenden Stahles, da Kupfer in dem in Frage kommenden Wasser, insbesondere Leitungswasser, ein negativeres, unedleres Korro-The copper rings present in the connecting sleeve produce an active electrochemical, cathodic effect Corrosion protection of the stainless steel, especially because of the copper in the water in question Tap water, a more negative, less noble corrosive

Claims (2)

1 sionspotential als der nichtrostende Stahl hat. Patentansprüche: Die Erfindung wird an Hand der Zeichnung nachfolgend näher erläutert.1 has sion potential than stainless steel. Claims: The invention is explained in more detail below with reference to the drawing. 1. Rohrverbindung für die ortsgebundene Verle- Fig. 1 zeigt einen Längsschnitt durch ein Rohrende, gung dünnwandiger Leitungsrohre aus korrosions- 5 eine Verbindungshülse und zwei Backen und beständigem bzw. hochlegiertem nichtrostenden F i g. 2 die Anordnung der F i g. 1 im Querschnitt. Stahl für Wasser- und Heizungsinstallationen, mit Die Rohrverbindung wird durch eine Verbindungseiner verformbaren, auf die Rohrenden aufgescho- hülse 2 mit zwei Rohrenden 5 gebildet, von denen in benen gleichfalls dünnwandigen Verbindungshülse F i g. 1 nur die eine, die rechte Seite dargestellt ist. Dichaus artgleichem Werkstoff, deren als Ringsicken aus- 10 tungsringe 3 sind im Innern der an beiden Enden gebilgebildete Enden mit einem hierin angeordneten deten Ringwülste 7 eingesetzt. Mit Backen 4, 6 einer Dichtring die Rohrenden mit Preßsitz umschließen, nicht dargestellten Preßzange ist die Ringwulst 7 der und die ein zum kathodischen Korrosionsschutz die- Verbindungshülse 2 auf das Rohrende aufgedrückt, wonendes, mit einem Bereich des Rohrendes und der bei vorteilhaft eine sechseckige Innenform der Backen Verbindungshülse in elektrisch leitendem Kontakt 15 und 6 eine entsprechende form- und kraftschlüssige stehendes Werkstück aus Kupfer aufweist, da- Verbindung herstellt und gesichert wird, daß der Dich-1. Pipe connection for fixed installation Fig. 1 shows a longitudinal section through a pipe end, supply of thin-walled line pipes made of corrosion- 5 a connecting sleeve and two jaws and resistant or high-alloy stainless steel F i g. 2 shows the arrangement of FIGS. 1 in cross section. Steel for water and heating installations, with The pipe connection is formed by a connection of a deformable sleeve 2, slipped onto the pipe ends, with two pipe ends 5, of which in benen likewise thin-walled connecting sleeve F i g. 1 only the one, the right side is shown. You out material of the same type, the rings 3 of which are designed as ring beads and are inside the formed at both ends Ends with a deten annular beads 7 arranged therein are used. With jaws 4, 6 one Sealing ring enclose the pipe ends with a press fit, pressing pliers (not shown) is the annular bead 7 and the one for cathodic corrosion protection die-connecting sleeve 2 pressed onto the pipe end, with a region of the pipe end and advantageously a hexagonal inner shape of the jaws Connecting sleeve in electrically conductive contact 15 and 6 a corresponding form-fitting and force-fitting has a standing workpiece made of copper, there- a connection is established and secured that the sealing 'durch gekennzeichnet, daß im Innern der tungsring 3 eine zuverlässige Abdichtung zwischen dem'characterized in that inside the processing ring 3 a reliable seal between the Verbindungshülse (2) am äußeren Ende eines jeden Rohrende 5 und der Verbindungshülse 2 gewährleistet.Connecting sleeve (2) at the outer end of each pipe end 5 and the connecting sleeve 2 guaranteed. Rohrendes (5) ein Kupferring (1) angeordnet ist. Die Verbindungshülse 2 ist etwa in der Mitte mit einerPipe end (5) a copper ring (1) is arranged. The connecting sleeve 2 is approximately in the middle with a 2. Verbindungshülse für die Rohrverbindung nach 20 ringförmigen Eindrückung 8 versehen. Vor dieser EinAnspruch 1, dadurch gekennzeichnet, daß die Ver- drückung 8 ist innen an jeder Seite der Verbindungshülbindungshülse (2) im mittleren Teil mit einer ringför- se ein Kupferring 1 eingesetzt, gegen den die Stirnfläche migen Eindrückung (8) versehen ist und im Innern des Rohrendes 5 geschoben wird.2. Connection sleeve for the pipe connection after 20 annular indentation 8 provided. Before this objection 1, characterized in that the compression 8 is inside on each side of the connecting sleeve binding sleeve (2) in the middle part with an annular shape a copper ring 1 is inserted against which the end face moderate indentation (8) is provided and is pushed inside the pipe end 5. der Verbindungshülse (2) vor der ringförmigen Ein- , the connecting sleeve (2) in front of the annular inlet, drückung (8) an jeder Seite der Kupferring (1) ange- 25 Hierzu 1 Blatt Zeichnungenpressure (8) on each side of the copper ring (1). 25 1 sheet of drawings ordnet ist.is arranged.
DE3512331A 1985-04-03 1985-04-03 Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection Expired DE3512331C1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE3512331A DE3512331C1 (en) 1985-04-03 1985-04-03 Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection
DE8686730034T DE3661963D1 (en) 1985-04-03 1986-02-27 Pipe junction and connector sleeve for use therewith
EP86730034A EP0198789B1 (en) 1985-04-03 1986-02-27 Pipe junction and connector sleeve for use therewith
AT86730034T ATE40454T1 (en) 1985-04-03 1986-02-27 PIPE CONNECTION AND CONNECTING SLEEVES FOR MAKING THE SAME.
JP61043897A JPS61233286A (en) 1985-04-03 1986-02-28 Pipe joint and coupling sleeve for forming pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3512331A DE3512331C1 (en) 1985-04-03 1985-04-03 Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection

Publications (1)

Publication Number Publication Date
DE3512331C1 true DE3512331C1 (en) 1986-08-21

Family

ID=6267297

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3512331A Expired DE3512331C1 (en) 1985-04-03 1985-04-03 Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection
DE8686730034T Expired DE3661963D1 (en) 1985-04-03 1986-02-27 Pipe junction and connector sleeve for use therewith

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8686730034T Expired DE3661963D1 (en) 1985-04-03 1986-02-27 Pipe junction and connector sleeve for use therewith

Country Status (4)

Country Link
EP (1) EP0198789B1 (en)
JP (1) JPS61233286A (en)
AT (1) ATE40454T1 (en)
DE (2) DE3512331C1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE139017T1 (en) * 1988-05-25 1996-06-15 Nussbaum & Co Ag R PRESS CONNECTION ARRANGEMENT, FITTING AND METHOD OF MANUFACTURING
DE3901562C1 (en) * 1989-01-17 1990-03-08 Mannesmann Ag, 4000 Duesseldorf, De
DE4025317A1 (en) * 1990-08-07 1992-02-13 Mannesmann Ag USE OF A PRESS FITTING TO MAKE AN UNLOADABLE CONNECTION OF THIN-WALLED TUBES
DE19543092C2 (en) * 1995-11-18 1998-04-30 Novopress Gmbh Process for producing a pipe connection and coupling device for producing a pipe connection
EP0913612B1 (en) 1997-11-03 2003-04-02 NOVOPRESS GMBH PRESSEN UND PRESSWERKZEUGE & CO. KG. Procedure for connecting a pipe with a pipe coupling, a coupling between a pipe and a pipe coupling and a pipe coupling therefor
DE19749748C1 (en) * 1997-11-03 1999-04-08 Novopress Gmbh Joining pipe end to pipe coupling by compression
DE102004020478B3 (en) * 2004-04-26 2005-11-17 Vulkan Lokring-Rohrverbindungen Gmbh & Co. Kg Pipe connection with defined sealing effect
NO321352B1 (en) * 2004-07-02 2006-05-02 Statoil Asa Remote controlled joint system for underwater pipelines
JP7015954B1 (en) * 2021-04-28 2022-02-03 株式会社三五 Press caulking die

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303505A1 (en) * 1983-01-31 1984-08-02 Mannesmann AG, 4000 Düsseldorf PRESSFITTING WITH COPPER SLEEVE FOR CATHODICAL CORROSION PROTECTION

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725280A1 (en) * 1977-06-01 1978-12-14 Mannesmann Roehren Werke Ag Pipe connection system for thin metal pipes - uses compressible sleeve with conical section and ring collars
JPS5725227A (en) * 1980-07-21 1982-02-10 Nisshin Steel Co Ltd Joining method of stainless steel pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303505A1 (en) * 1983-01-31 1984-08-02 Mannesmann AG, 4000 Düsseldorf PRESSFITTING WITH COPPER SLEEVE FOR CATHODICAL CORROSION PROTECTION

Also Published As

Publication number Publication date
JPS61233286A (en) 1986-10-17
EP0198789B1 (en) 1989-01-25
EP0198789A2 (en) 1986-10-22
ATE40454T1 (en) 1989-02-15
EP0198789A3 (en) 1987-06-03
DE3661963D1 (en) 1989-03-02

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Legal Events

Date Code Title Description
8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee