DE899738C - Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material - Google Patents

Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material

Info

Publication number
DE899738C
DE899738C DES22612A DES0022612A DE899738C DE 899738 C DE899738 C DE 899738C DE S22612 A DES22612 A DE S22612A DE S0022612 A DES0022612 A DE S0022612A DE 899738 C DE899738 C DE 899738C
Authority
DE
Germany
Prior art keywords
building material
ferritic
austenitic
sealing ring
flange seal
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
DES22612A
Other languages
German (de)
Inventor
Hans Memmel
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES22612A priority Critical patent/DE899738C/en
Application granted granted Critical
Publication of DE899738C publication Critical patent/DE899738C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/12Flanged joints specially adapted for particular pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)

Description

Bei den sehr hohen Temperaturen, die für nettzeitliche Kraftwerke zur Erzielung ;günstiger Wirkungsgr.adie erforderlich sind, ist man an den Stellen, die den höchsten Temperaturen ausgesetzt sind, gezwungen, ferritischen Stahl durch austenitisch@en Stahl zu :ersetzen. Neben anderen Problemen, die sich hierdurch ergeben, ist besonders. eines zu beachten, nämlich die stark voneinander abweichenden Ausdehnungsbeiwerte von austenit.ischen und ferri.tischen Baustoffen. Das führt u. a. dazu, @daß man die Verb.indungsmittel zwischen solchen Baubeilen nicht mehr in der sonst üblichen Weise ausbilden kann, wie sie auf Grund annähernd gleicher Ausdehnungsbeiwerte der zu verbindenden Teile entwickelt worden sind. Bei: ,der Flans@ch,dichtwng ist .dabei, noch folgendes, zu beachten: Die Flanschdichtung ist nicht immer der :gleichen Temperatur ausgesetzt, sondern es muß mit Temperaturschwankungen des durchströmenden Mittels -gerechnet werden, :die auf die Dichtung zurückwirken. Gegenüber Temperaturerhöhuingen und -absenkungen verhält sich aber der austenitische Baustoff anders als,der ferritische, so daß leicht,die Gefahr von Undichtheiten entsteht. Wollte man zur Abdichtung die sonst üblichen Mittel verwenden, so würde man nur zu unbefriedigenden Ergebnissen gelangen.At the very high temperatures that are required for nice-time power plants to achieve; favorable efficiency, which are required, one is at the points those exposed to the highest temperatures, forced through ferritic steel austenitic steel to: replace. Among other problems that arise as a result surrender is special. one thing to consider, namely the strongly differing ones Expansion coefficients of austenitic and ferritic building materials. Leading i.a. in addition, @ that one no longer uses the connecting means between such building axes can train in the usual way, as they are due to approximately the same Expansion coefficients of the parts to be connected have been developed. In the Flans @ ch, Dichtwng, the following must also be observed: The flange seal is not always exposed to the same temperature, but must be subject to temperature fluctuations of the medium flowing through: which have an effect on the seal. In relation to temperature increases and decreases, however, the austenitic one behaves Building material other than, the ferritic, so that easily, the risk of leakage arises. If you wanted to use the usual means for sealing, you would one can only get unsatisfactory results.

Die Erfindung beschäftigt sich mit,der Aufgabe, hierfür günstigere Voraussetzungen zu schaffen, und zwar ist das dadurch möglich, daß @che Dichtung als, Ring aus austenitdschem Baustoff ausgebildet ist, -der wärmebeweglich an,dien ferritischen Baubeil angeschweißt ist.The invention is concerned with, the task of this more favorable To create prerequisites, and that is possible because @che poetry is designed as a ring made of austenitic building material, which is heat-movable ferritic component is welded.

Die Erfindung sei, an Hand der beiden Ausführungsbeispiele der Fig. i und 2 erläutert. In der Fig. it bedeutet F ein Rohr aus austenitischem Werkstoff, das über einen Flanschring A gegen,den ferritischen Bauteil T unter Zwischenlage einer Dichtung verspannt werden soll. Für diesen Zweck ist ein Ring R aus austenitis,chem Baustoff eingelegt, der sich einerseits gegen ,die Fläche S am Baubeil T und andererseits ;gegen die Fläche D am Rohr F anlegt. Dabei ist :die Ringfläche D zweckmäßig kugelig ausgebildet. Der eigentliche Ring R geht in eine elastische Welle W über, die bei C mit dem Bauteil T verschweißt ist. Wesentlich ist, daß die Schweißnaht C und die Stützfläche S in derselben Ebene angeordnet - sind; damit Beanspruchungen der Schweißnaht infolge der Wärmedehnung im Ring R vermieden werden.The invention will be explained with reference to the two exemplary embodiments in FIGS. In the figure, F denotes a tube made of austenitic material, which is to be braced against the ferritic component T via a flange ring A with the interposition of a seal. For this purpose, a ring R made of austenite, chemical building material is inserted, which on the one hand rests against the surface S on the component T and on the other hand against the surface D on the pipe F. The ring surface D is expediently spherical. The actual ring R merges into an elastic wave W, which is welded to component T at C. It is essential that the weld seam C and the support surface S are arranged in the same plane; so that stresses on the weld seam as a result of the thermal expansion in the ring R are avoided.

Bei. der Ausführung nach Fig. 2, die im wesentli:chen denselben Aufbau wie Fig. I zeigt, ist eine Änderung insofern, vorgenommen, als :der Teil W düreh einen kegelförmigen Teil W' ersetzt ist, der gegen eine Kegelfläche S' gedrückt wird. Hierbei ist noch bemerkenswert, @daß die Neigung der Kegelfläche so gewählt wird-, daß idile axiale Wärmedehnung ,des Dichtringes ausgeglichen wird, um eine Überbeanspruchung .der Schraubverbindung zu vermeiden.At. the embodiment according to FIG. 2, which essentially have the same structure As shown in Fig. I, a change is made in that: the part W rotates a conical part W 'is replaced which is pressed against a conical surface S' will. It is also noteworthy that the inclination of the conical surface is chosen in this way that idile axial thermal expansion of the sealing ring is compensated for by a Avoid overstressing the screw connection.

Die beiden Ausführungsformen lassen erkennen, daß bei der neuen; Art der Dichtung Un:dichtheiten infolge der verschiedenen Ausdehnungsbeiwerte von austenitischem und- fer.ritischem Baustoff nicht mehr zu -befürchten sind, @da die Ausbildung des Ringes ein :dauerndes Anliegen, der Dichtungsflächen gewährleistet.The two embodiments show that in the new; Art the seal leaks as a result of the various expansion coefficients of austenitic and ferritic building material are no longer to be feared, @ because the formation of the Ring: constant concern that guarantees sealing surfaces.

Claims (3)

PATENTANSPRÜCHE-i. Flan.schdichtung für den Ansehluß eines Rohres aus. austenntis,chem Baustoff an einen Teil aus ferritisahem Baustoff mit einem zwisehen den Bauteilen .liegenden., iduroh Anpressung wirkenden Dichtungsring, dadurch gekennzeichnet, @daß der Dichtungsring (R) aus austenitiechem Baustoff besteht und wärmebeweglich in den ferritischen iBhuteil (T) eingeschweißt ist (bei C). PATENT CLAIMS-i. Flange seal for connecting a pipe the end. austenntis, chem building material to a part made of ferritis-related building material with a between the components. lying., iduroh pressure acting sealing ring, thereby characterized @ that the sealing ring (R) consists of austenitic building material and heat-movable into the ferritic cover part (T) is welded (at C). 2. Dichtung nach Anspruch i, dadurch gekennzeichnet, daß der äußere Kranz des Dichtungsringes (R) na-oh Art einer elastischen Welle (W) ausgebildet ist. 2. Seal according to claim i, characterized in that the outer rim of the sealing ring (R) na-oh kind of elastic wave (W) is formed. 3. Dichtung nach Anspruch i, dadurch gekennzeichnet, daß der Dichtungsring (R) zur Erzielung der Wärmebeweglichkeit in einer Kegelfläche (S') gegen den ferritischem Bauteil (T) abgestützt ist. q.. Dichtung nach Anspruch. i und 2, dadurch gekennzeichnet, daß die Schweißnaht (C) in der Ebene der Stützfläche (S) liegt. Angezogene Druckschriften: Deutsche Patentschrift Nr. 72319522. 3. Seal according to claim i, characterized in that the sealing ring (R) is supported against the ferritic component (T) in order to achieve the thermal mobility in a conical surface (S '). q .. seal according to claim. i and 2, characterized in that the weld seam (C) lies in the plane of the support surface (S). Referenced publications: German patent specification No. 72319522.
DES22612A 1951-04-06 1951-04-06 Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material Expired DE899738C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES22612A DE899738C (en) 1951-04-06 1951-04-06 Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES22612A DE899738C (en) 1951-04-06 1951-04-06 Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material

Publications (1)

Publication Number Publication Date
DE899738C true DE899738C (en) 1953-12-14

Family

ID=7476999

Family Applications (1)

Application Number Title Priority Date Filing Date
DES22612A Expired DE899738C (en) 1951-04-06 1951-04-06 Flange seal for connecting a pipe made of austenitic building material to a part made of ferritic building material

Country Status (1)

Country Link
DE (1) DE899738C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295936B (en) * 1964-12-10 1969-05-22 Le Nii Khim Maschinos Pipe seal
DE10064261A1 (en) * 2000-12-22 2002-07-04 Alstom Switzerland Ltd Flexible seal for gap between components subjected to thermal stress comprises base with circular cross-section which fits into groove in first component and lip which is at acute angle to its surface and rests against second component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723952C (en) * 1940-11-05 1942-08-14 Siemens Ag Labyrinth disc for centrifugal machines, especially steam or gas turbines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723952C (en) * 1940-11-05 1942-08-14 Siemens Ag Labyrinth disc for centrifugal machines, especially steam or gas turbines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295936B (en) * 1964-12-10 1969-05-22 Le Nii Khim Maschinos Pipe seal
DE10064261A1 (en) * 2000-12-22 2002-07-04 Alstom Switzerland Ltd Flexible seal for gap between components subjected to thermal stress comprises base with circular cross-section which fits into groove in first component and lip which is at acute angle to its surface and rests against second component

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