DE3123060A1 - Pipe for high temperatures - Google Patents
Pipe for high temperaturesInfo
- Publication number
- DE3123060A1 DE3123060A1 DE19813123060 DE3123060A DE3123060A1 DE 3123060 A1 DE3123060 A1 DE 3123060A1 DE 19813123060 DE19813123060 DE 19813123060 DE 3123060 A DE3123060 A DE 3123060A DE 3123060 A1 DE3123060 A1 DE 3123060A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- pipes
- stress
- layers
- tubes
- 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- Withdrawn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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/032—Joints between tubes and vessel walls, e.g. taking into account thermal stresses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
Rohre für hohe Tempersturen.Tubes for high temperatures.
Rohre, wie sie z.B. in Dampferzeuger- oder Nuklearanlagen eingebaut und dort hohen Beanspruchungen durch Warme,Druck und Strahlung ausgesetzt sind, erleiden gelegentlich Risse zumal dann, wenn wegen icherheitsauflagen die Wandstarken sehr überdimensioniert sind.Pipes, such as those installed in steam generator or nuclear systems and are exposed there to high stresses due to heat, pressure and radiation, occasionally suffer cracks, especially when the wall thickness is due to safety requirements are very oversized.
Denn ein Rohr, welches in seiner Wandung ein Temperaturgefälle quer zur Achse aufweist, wird sich, vorzugsweise in seiner Längsrichtung, unterschiedlich ausdehnen wollen.Because a pipe that has a temperature gradient across its wall has to the axis, is, preferably in its longitudinal direction, different want to expand.
Da es dies nur im ganzen kann, entstehen Spannungen in der Wandung, diezusammen mit anderen so groß werden können, daß sich Risse bilden. Um dies zu vermeiden, wird allenthalben nach besseren Werkstoffen Ausschau gehalten.Since it can only do this as a whole, tensions arise in the wall, which, together with others, can grow so large that cracks form. To do this avoid, better materials are on the lookout everywhere.
In Ergänzung dieser Bemühungen empfiehlt die vorliegende Erfindung Rohranordnungen, bei denen die oben gen. Spannungen dadurch wesentlich abgebaut werden, daß die Wandung aus mindestens zwei übereinander liegenden Schichten angefertigt wird, die sich axial zueinander verschieben können. Dadurch wird die oben beschriebene "Dehnungsspannung" in dem Umfang abgebaut und die Rißgefahr vermindert,wie Schichten vorhanden sind. Wegen der nunmehr geringeren Beanspruchung des Materials könnte dieses auch weniger hochwertig sei.In addition to these efforts, the present invention recommends Pipe arrangements in which the above-mentioned tensions are significantly reduced that the wall is made of at least two superimposed layers that can move axially to each other. This will make the above described "Tensile stress" is reduced to the extent and the risk of cracking is reduced, such as layers available. Because of the now lower stress on the material this is also less high quality.
In den Abbildungen sindeinige Ausführungsbeispiele schematisch dargestellt.Some exemplary embodiments are shown schematically in the figures.
Abb. 1 zeigt zwei ineinander gesteckte Rohre. Das innere 1 ist zwischen zwei Anschlußstücken 2 und 3 fest und dicht befestigt. Das äußere Rohr 4 ist verschiebbar auf dem inneren an einem Anschlußstück 3 befestigt, aber zu dem Anschlußstück 2 hält es einen "Dehnungsabstand" 5 ein.Fig. 1 shows two tubes inserted one inside the other. The inner 1 is between two fittings 2 and 3 firmly and tightly attached. The outer tube 4 is displaceable attached on the inner to a connector 3, but to the connector 2 it maintains an "expansion distance" 5.
Das Änschlußstäck besitzt über dem Ende des Rohres 4 einen Stüt#ring 6.The connecting piece has a support ring over the end of the tube 4 6th
In Abb.2 ist das Rohr 1 ebenfalls zwischen zwei Anschlußstücken 3 fest und dicht befestigt. Auf dem Rohr 1 ist ein Metallband 7 so aufgewickelt und an den Anschlußstücken befestigt, daß flehnungsabstande 5 eingehalten werden.In Fig. 2, the pipe 1 is also between two connecting pieces 3 firmly and tightly attached. On the tube 1, a metal band 7 is wound up and attached to the connecting pieces that flehnung distances 5 are observed.
In Abb. 3 wurden als Beispiel 4 Rohre gewählt, die untereinander längsverschiebbar mit dem Anschlußstück 2 verbunden sind. Doch nur Rohr 1 ist mit dem Anschlußstück 2 fest und dicht befestigt. Am anderen nicht dargestellten Ende sind die Rohre 1 und 4 wie in Abb.1 fest und dicht an einem Anschlußstück 3 befestigt.In Fig. 3, 4 pipes were chosen as an example, which can be moved longitudinally among each other are connected to the connector 2. But only pipe 1 is with the connector 2 firmly and tightly attached. At the other end, not shown, are the tubes 1 and 4 firmly and tightly attached to a connection piece 3 as in FIG.
Iffl otützansatz 6 des Anschlußstückes 2 sind die Rohre 4 so angeordnet, daß jedes einen Dehnungsabstand 5 einhält und mit den Dichtringen 8 (Asbest und/oder Kohlenstofffaser) untereinander und mit Rohr 1 abgedichtet sind.Iffl otützansatz 6 of the connection piece 2, the pipes 4 are arranged so that each maintains an expansion distance 5 and with the sealing rings 8 (asbestos and / or Carbon fiber) are sealed with each other and with tube 1.
Eine weitere Ausführung empfiehlt sich, wenn die beiden Kontaktstellen der Anschlußstücke Festpunkte im Raum sind.Another execution is recommended if the two contact points the connection pieces are fixed points in the room.
Dann ist an beiden Enden eine Ausführupg wie Abb. 4 möglich, wo Rohr 1 ebenso wie die Rohre 4 an beiden Enden längsverschiebbar mit Dehnunsabständen 5 und Dichtringen 8 im Stützansatz 6 des Anschlußstückes 2 gelagert sind.Then a design like Fig. 4 is possible at both ends, where pipe 1 as well as the tubes 4 can be longitudinally displaced at both ends with expansion spacings 5 and sealing rings 8 are mounted in the support extension 6 of the connection piece 2.
Diese dann zweifachflexible Anordnung ist besonders dann vorteilhaft, wenn die Kontaktstellen zwar stabile Festpunkte (-ebenen) darstellen, jedoch,wie zumeist,durch Beanspruchungen in Grenzen sich verschieben können. Auch für den Ein- und Ausbau der Rohre bringt diese flexible Anordnung Vorteile.This arrangement, which is then doubly flexible, is particularly advantageous when if the contact points represent stable fixed points (levels), but how mostly, can shift within limits due to stress. Also for the and expansion of the pipes, this flexible arrangement brings advantages.
Weiter wird hier neben dem Dehnungsabstand 5 für mehrere Dichtringe 8 der Abstand 9 gezeigt, der sich aus der Ringbreite und einem Dehnungsabstand 5 zusammen setzt0 Dadurch wird das Einlegen der Ringe leichter und der Stützansatz 6 braucht nur, wie mit Teil 10, einmal geteilt zu werden.Next is next to the expansion distance 5 for several sealing rings 8 shows the distance 9, which results from the ring width and an expansion distance 5 This makes inserting the rings easier and the support attachment 6 only needs to be divided once, as with part 10.
Im übrigen kann jede vorteilhafte Kombination der beschriebenen Beispiele angewandt werden.In addition, any advantageous combination of the examples described can be used can be applied.
L e e r s e i t eL e r s e i t e
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813123060 DE3123060A1 (en) | 1981-06-11 | 1981-06-11 | Pipe for high temperatures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813123060 DE3123060A1 (en) | 1981-06-11 | 1981-06-11 | Pipe for high temperatures |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3123060A1 true DE3123060A1 (en) | 1983-01-13 |
Family
ID=6134385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19813123060 Withdrawn DE3123060A1 (en) | 1981-06-11 | 1981-06-11 | Pipe for high temperatures |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3123060A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10131524B4 (en) * | 2001-07-02 | 2004-04-15 | Vattenfall Europe Generation Ag & Co. Kg | Heating surface of a steam generator with numerous heating surface tubes through which a cooling medium flows and which run approximately parallel to one another |
DE10319451A1 (en) | 2003-04-30 | 2004-11-25 | Iwka Balg- Und Kompensatoren-Technologie Gmbh | Piping for recycling of exhaust gas recirculation in an internal combustion engines, like in motor vehicles, comprises at least one section with at least two solid layers with smooth surfaces |
-
1981
- 1981-06-11 DE DE19813123060 patent/DE3123060A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10131524B4 (en) * | 2001-07-02 | 2004-04-15 | Vattenfall Europe Generation Ag & Co. Kg | Heating surface of a steam generator with numerous heating surface tubes through which a cooling medium flows and which run approximately parallel to one another |
DE10319451A1 (en) | 2003-04-30 | 2004-11-25 | Iwka Balg- Und Kompensatoren-Technologie Gmbh | Piping for recycling of exhaust gas recirculation in an internal combustion engines, like in motor vehicles, comprises at least one section with at least two solid layers with smooth surfaces |
DE10319451B4 (en) | 2003-04-30 | 2018-08-30 | Boa Balg- Und Kompensatoren-Technologie Gmbh | pipeline |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |