DE2828076A1 - Electrical insulating flange for heating pipes - has tube fitting closely in pipe and centring washer between pipe flanges - Google Patents
Electrical insulating flange for heating pipes - has tube fitting closely in pipe and centring washer between pipe flangesInfo
- Publication number
- DE2828076A1 DE2828076A1 DE19782828076 DE2828076A DE2828076A1 DE 2828076 A1 DE2828076 A1 DE 2828076A1 DE 19782828076 DE19782828076 DE 19782828076 DE 2828076 A DE2828076 A DE 2828076A DE 2828076 A1 DE2828076 A1 DE 2828076A1
- Authority
- DE
- Germany
- Prior art keywords
- insulating
- pipe
- flanges
- washer
- heating pipes
- 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- Withdrawn
Links
Classifications
-
- 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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/02—Electrically insulating joints or couplings
- F16L25/026—Electrically insulating joints or couplings for flanged joints
Abstract
Description
Isolierstüc! für LeitungsrohreIsolierstüc! for line pipes
Beim Verlegi3n von Leitungsrohren, insbesondere Fernheizungaroh:#en, müssen die einzelnen Leitungsabschnitte voneinander durch eine elektrische Trennung isoliert werden.When laying line pipes, especially district heating the individual line sections must be electrically isolated from one another to be isolated.
Die Verwendung von Isolierflanschen mit Innen- bzw.The use of insulating flanges with internal or
AuBenemaill:erung oder Beschichtung ist teuer und problematisch, da beim Verbinden der Flansche die auftretender Durskkräfte, die auf das Flanschpaar einwirken, cift Haarrisse in der Emailkerung oder Beschichtung verursachen und damit keine elektrische Trennung mehr vorhanden ist.External enameling or coating is expensive and problematic because of that when connecting the flanges, the impact forces that occur on the pair of flanges act, cause cift hairline cracks in the enamel or coating and thus there is no longer any electrical separation.
Da bei herkömmlichen Isolierflanschverbindungen Dichtungen verwendet werden, die keine Rückstelleigenschaft haben und somit die Temperaturunterschiede (Längenausdehnungen) nicht ausgeglichen werden können, werden die meisten Flanschverbindungen oft undicht.As seals are used in conventional insulating flange connections that have no reset property and thus the temperature differences (Linear expansion) cannot be compensated, most of the flange connections are often leaking.
Die Erfindung meines Isolierflansches hat folgende Wirkungsweise und wird anhand der Zeichnung besprochen: Die Dichtwirkung der Runddichtringe Teil 5/6 beruht auf axialer oder radialer Verformung ihrer Querschnitte in eingebautem Zustand. Diese Verformung wird durch entsprechende Auslegung des Einbauraumes erreicht. Die hierdurch entstehende Reaktionskraft ergibt die fUr die Abdichtung erforderliche Anpreßkraft, welche durch den Mediumsdruck zusätzlich unterstützt wird. In diesem Falle der Flanschverbindung mit elektrischer Trennung müssen zwei Runddichtringe zum Einsatz kommen, da das Medium (HeiBwasser) den hierfür vorgesehenen Isoliereinsatz (3/4) beidseitig mit Druck beaufschlagt.The invention of my insulating flange has the following mode of action and is discussed based on the drawing: The sealing effect of the O-rings, part 5/6 is based on axial or radial deformation of their cross-sections when installed. This deformation is achieved by designing the installation space accordingly. the the resulting reaction force results in the necessary for the seal Contact pressure, which is additionally supported by the medium pressure. In this In the case of a flange connection with electrical separation, two O-rings must be used are used because the medium (hot water) has the insulating insert provided for this purpose (3/4) pressurized on both sides.
Um ein Verspannen, Verkanten-oder UerquEtschen der Runddichtringe zu verhindern, wird die Zentrierisolieranlaufscheibe (4) als Anlaufacheibe des Flanschpaares (1/2) verwendet. Die elektrische Trennung der Schrauben (12) mit dem Flanschpaar (1/2) wird durch Isolierhülsen (7) und Scheibe mit Dichtung (8/C) gewährleistet.To prevent tensioning, tilting or squeezing of the O-rings To prevent this, the centering isolating thrust washer (4) is used as a thrust washer for the pair of flanges (1/2) used. The electrical separation of the screws (12) with the flange pair (1/2) is ensured by insulating sleeves (7) and washer with seal (8 / C).
Der neue Isolierflanach trennt die Aufgaben, daß die Abdichtung mit Runddichtringen und die mechanische Beanspruchung der Längenänderung bei Temperaturschwankungen in den Rohrleitungen besser aufgenommen werden und die Funktion der Abdichtung und Längenänderung der Elemente (1/2/10/11 und 12) nicht doppelt belastet wird.The new Isolierflanach separates the tasks that the sealing with O-rings and the mechanical stress of the change in length with temperature fluctuations be better absorbed in the pipelines and the function of sealing and Change in length of the elements (1/2/10/11 and 12) is not loaded twice.
Beim Betrieb der Rohrleitungastrecke (10/11) gelangt natürlich Flüssigkeit in den Spalt zwiscnen dem Leitungsrohr (10) und dem Isolierrohr (3), jedoch kann kein elektrischer Strom in das Rohrinnere weiterfließen, da durch Runddichtring (6) und Isolierrohr (3) keine Stromüberbrückung vorhanden ist. Die Länge des Isolierrohres# wird so lange gemacht, daß praktisch kein Strom mehr fließt. In der Praxis beieutet dies, daß die axiale Länge des Isolierrohres (3) drei- bis fünfmal länger ist als der Nenndurchmesser des Rohres.When the pipeline section (10/11) is in operation, liquid naturally comes in in the gap between the conduit pipe (10) and the insulating pipe (3), but can No electrical current can flow into the inside of the pipe because of the O-ring (6) and insulating tube (3) there is no current bridging. The length of the insulating tube # is made so long that practically no more current flows. This means in practice this is that the axial length of the insulating tube (3) is three to five times longer than the nominal diameter of the pipe.
Ein weiterer Vorteil ist, daß keine Fehlzentrierung des Flanschpaares möglich ist und damit iie plangenauen Dichtflächen gegen die Runddichtringe parallel gepreßt werden müssen.Another advantage is that there is no mis-centering of the flange pair is possible and thus iie precisely planar sealing surfaces parallel to the O-rings have to be pressed.
Ein weiterer Vorteil ist die RUckstellkr#ft der Runddichtringe (5/6) und die Verwendung von muswechselbarem Isolierrohr mit Bund (3), die keine Überbrückung von elektrischen Strömen zulassen-und somit der Problematik auf einfache und billige Weiss Rechnung tragen.Another advantage is the restoring force of the O-rings (5/6) and the use of removable insulating tube with collar (3) that does not require bridging allow electrical currents - and thus the problem in a simple and cheap way Weiss take into account.
LeerseiteBlank page
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782828076 DE2828076A1 (en) | 1978-06-27 | 1978-06-27 | Electrical insulating flange for heating pipes - has tube fitting closely in pipe and centring washer between pipe flanges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782828076 DE2828076A1 (en) | 1978-06-27 | 1978-06-27 | Electrical insulating flange for heating pipes - has tube fitting closely in pipe and centring washer between pipe flanges |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2828076A1 true DE2828076A1 (en) | 1980-02-14 |
Family
ID=6042840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19782828076 Withdrawn DE2828076A1 (en) | 1978-06-27 | 1978-06-27 | Electrical insulating flange for heating pipes - has tube fitting closely in pipe and centring washer between pipe flanges |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2828076A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0310773A1 (en) * | 1987-10-08 | 1989-04-12 | Auzinger, Johann | Break down resistant connection with differentiated rubberised sorts in the flange region of pipe-lines |
DE4344360A1 (en) * | 1993-12-24 | 1995-07-06 | Idt Ind Und Dichtungstechnik G | Manhole protection and sealing ring for enamelled steel boilers |
DE202014001538U1 (en) | 2014-02-06 | 2014-03-25 | Alfred Wilhelm Schlemenat | Connecting arrangement for achieving optimum tightness requirements |
CN105042229A (en) * | 2015-05-25 | 2015-11-11 | 张家港华日法兰有限公司 | Remote control flange |
CN107035927A (en) * | 2016-11-30 | 2017-08-11 | 广东顺德太昌客车空调有限公司 | A kind of new energy car electric air-conditioning pipeline insulation joint |
EP4047254A1 (en) | 2021-02-23 | 2022-08-24 | Strüder Rohr-, Regel- und Meßanlagen GmbH | Flange connection, flange seal and method for installing a new flange seal |
-
1978
- 1978-06-27 DE DE19782828076 patent/DE2828076A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0310773A1 (en) * | 1987-10-08 | 1989-04-12 | Auzinger, Johann | Break down resistant connection with differentiated rubberised sorts in the flange region of pipe-lines |
DE4344360A1 (en) * | 1993-12-24 | 1995-07-06 | Idt Ind Und Dichtungstechnik G | Manhole protection and sealing ring for enamelled steel boilers |
DE202014001538U1 (en) | 2014-02-06 | 2014-03-25 | Alfred Wilhelm Schlemenat | Connecting arrangement for achieving optimum tightness requirements |
DE102014001582A1 (en) | 2014-02-06 | 2015-08-06 | Alfred Wilhelm Schlemenat | Connecting arrangement for achieving optimum tightness requirements |
CN105042229A (en) * | 2015-05-25 | 2015-11-11 | 张家港华日法兰有限公司 | Remote control flange |
CN107035927A (en) * | 2016-11-30 | 2017-08-11 | 广东顺德太昌客车空调有限公司 | A kind of new energy car electric air-conditioning pipeline insulation joint |
EP4047254A1 (en) | 2021-02-23 | 2022-08-24 | Strüder Rohr-, Regel- und Meßanlagen GmbH | Flange connection, flange seal and method for installing a new flange seal |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |