DE923488C - Rolled connection of tubes, in particular boiler tubes, in plates, drums, flanges or the like. - Google Patents
Rolled connection of tubes, in particular boiler tubes, in plates, drums, flanges or the like.Info
- Publication number
- DE923488C DE923488C DEST3747A DEST003747A DE923488C DE 923488 C DE923488 C DE 923488C DE ST3747 A DEST3747 A DE ST3747A DE ST003747 A DEST003747 A DE ST003747A DE 923488 C DE923488 C DE 923488C
- Authority
- DE
- Germany
- Prior art keywords
- small grooves
- connection according
- rolled
- tubes
- rolled connection
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/104—Connection of tubes one with the other or with collectors, drums or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
Die Erfindung beitrifft eine Walzverbindung von Rohren, insbesondere Kesselrohren, in Platten, Trommeln, Flanschen od. dgl.The invention relates to a rolling connection of pipes, in particular Boiler tubes, in plates, drums, flanges or the like.
Mit dem Häherwerden der Betriieb,sdrücke von Dampfkesselanlagen u. dgl. ist man seit langem bestrebt, durch besondere Maßnahmen eine höhere Beanspruchung der Walzstellen zu erreichen. So hat man z. B. beim Einwalzen von Kesselrohren in Trommeln oder Sammler die sogenannte Haftaufweitung erhöht und hierdurch die Dichtigkeit der Walzstellen bei immer höheren Drücken entsprechend häufigem Lastwechsel bis zu. einem gewissen Grad erreicht. Man hat auch die Bohrungen, in welche die Rohre eingewalzt werden, zunächst mit einer Nut und später mit mehreren Nuten versehen, in welche sich, das Rohrmaterial beim Einwalzen hineindrückt. Außerdem hat man dem Bohrungen verschiedene Formen, z. B. konische Form, gegeben, oder man, hat die Rohrenden beim Einwalzen Rufgebördelt. Ferner hat man eine höhere Beanspruchungsfähigkeit erzielt durch das Einbringen von sogenannten Sprengringen.With the increase in the number of operations, pressures of steam boiler systems and the like The like. Efforts have long been made to increase the stress by taking special measures to reach the rolling stations. So one has z. B. when rolling boiler tubes in Drums or collectors increase the so-called adhesion expansion and thereby the tightness of the rolling points at higher and higher pressures corresponding to frequent load changes up to to. reached a certain degree. One also has the bores into which the pipes are rolled in, initially provided with a groove and later with several grooves, into which the pipe material presses during rolling. Besides, you have that Different shapes of holes, e.g. B. conical shape, given, or you have the pipe ends Ruffled when rolling in. Furthermore, you have a higher load capacity achieved by inserting so-called snap rings.
Bei hochbeanspruchten Walzstellen. sind die Ergebnisse infolge der immer höher werdenden Drücke und Beanspruchungen bisher jedoch noch nicht befriedigend. So sind z. B. der Haftaufweitung dadurch- Grenzen gesetzt, daß bei zu großer Haftaufweitung die Gefahr der Bildung von Rundrissen im Rohr entsteht, da die Dehnungsfähilgkeit infolge der Kaltverformung abnimmt.For highly stressed rolling points. are the results as a result of The ever increasing pressures and stresses, however, have not yet been satisfactory. So are z. B. the expansion of liability thereby- set limits that if the expansion of liability is too large the risk of the formation of round cracks in the pipe arises because of the ability to expand decreases as a result of cold deformation.
Die Erfindung besteht nun darin, daß die Bohrung, in welche das Rohr eingewalzt wird, vor dem Einwalzen mit einer Hauptnut und außerdem mit einer oder mehreren Kleinrillen verseben wird. Die Bedeutung des Erfindungsgedankens ist durch Versuche bestätigt worden, bei; denen sich zeigte, daß eine Walzstelle, deren. Bohrung beispielsweise mit einer Hauptnut und daneben mit einer Kleinrille versehen ist, die in einer ganz kleitnen kerbförmigen Riefe besteht, schon bei verhältnismäßig niedrigerer Haftaufweitung essne wesentliche höhere Beanspruchung aushält als bei allen bisher bekannten Bohrungsformen. Infolge der erfindungsgemäßen Verwendung von Kleinrillen bleibt demgemäß ein relativ großer Sicherheitsbereich der zur Verfügung stehenden Dehnung erhalten, ohne daß man auf die Verwendung von Sprengringen angewiesen, ist.The invention consists in that the bore in which the pipe is rolled in, before rolling with a main groove and also with an or several small grooves will be sunk. The meaning of the inventive idea is through Attempts have been confirmed at; which it was found that a rolling station, their. drilling For example, it is provided with a main groove and a small groove next to it, which consists in a very small notch-shaped groove, even at relatively lower adhesion expansion can withstand significantly higher stress than with all known bore shapes. As a result of the use according to the invention of small grooves accordingly remains a relatively large safety area of the available standing elongation without having to rely on the use of snap rings, is.
Der angestrebte Erfolg der Erfindung ist schon erreicht, wenn. man außer einer Hauptnut nur eine kleine kerbiartige Rille in der Bohrung anbringt. Diese braucht dabei nicht über den ganzen Umfang der Bohrung zu, verlaufen, sondern kann auch unterbrochen sein. Man kann auch unterbrochene Teilkleinrillen in verschiedenen Abständen von der Hauptnut gegeneinander versetzt anbringen. Ferner kann man der oder den Kleinrillen verschiedene Formen geben. Beispielsweise hat es sich als vorteilhaft erwiesen, die eine Flanke der Kleinrille senkrecht zur Wandung der Bohrung verlaufen zu lassen. Es ist aber auch möglich, die Flanken unter gleichen Winleeln anzuordnen, so daß sieh eine spitzwinklige Rille ergibt. Andererseits kann man auch die Kleinriffle entweder im Grunde oder an einer oder beiden Oberkanten mit Radius ausbilden. Wichtig ist vor allem, daß die Kleinrille im Verhältnis zur Hauptnut ganz geringfügige Abmessungen aufweist.The desired success of the invention has already been achieved when. man in addition to a main groove, only a small notch-like groove is made in the bore. This does not need to run over the entire circumference of the bore, but can also be interrupted. You can also have interrupted partial small grooves in different Make the distances from the main groove offset from one another. You can also use the or give the small grooves different shapes. For example, it has been found to be beneficial proven that a flank of the small groove run perpendicular to the wall of the hole allow. But it is also possible to arrange the flanks under the same angles, so that it results in an acute-angled groove. On the other hand, you can also do the Kleinriffle either basically or on one or both upper edges with a radius. Important is above all that the small groove in relation to the main groove very small dimensions having.
In der Zeichnung sind einige Ausführungsbeispiele der Erfindung dargestellt.Some exemplary embodiments of the invention are shown in the drawing.
Abb. r zeigt eine Hauptnut r im Trommelwandmaterial 2, zu der in einem gewissen Abstand eine Kleinrille 3, mit von der Hauptnut abliegender, senkrecht zur Bohrung verlaufender Flanke 4 und winklng verlaufender Flanke 5, angebracht ist.Fig. R shows a main groove r in the drum wall material 2, to which in one a certain distance a small groove 3, with remote from the main groove, perpendicular to the bore extending flank 4 and angularly extending flank 5 attached is.
In Abb. 2 sind scharfkantige Kleinrillen 3 zu beiden Seiten der Hauptnut dargestellt.In Fig. 2 there are sharp-edged small grooves 3 on both sides of the main groove shown.
In Abb, 3 sind die Kleinrillen in ihrem Grunde mit einem Radiltis versehen.In Fig. 3 the small grooves are at the bottom with a radiltis Mistake.
Abb. 4 zeigt Kleinrillen, die oben abgerundet sind und im Grunde spitz verlaufen.Fig. 4 shows small grooves that are rounded at the top and basically pointy get lost.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST3747A DE923488C (en) | 1951-08-17 | 1951-08-17 | Rolled connection of tubes, in particular boiler tubes, in plates, drums, flanges or the like. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST3747A DE923488C (en) | 1951-08-17 | 1951-08-17 | Rolled connection of tubes, in particular boiler tubes, in plates, drums, flanges or the like. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE923488C true DE923488C (en) | 1955-02-14 |
Family
ID=7453311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST3747A Expired DE923488C (en) | 1951-08-17 | 1951-08-17 | Rolled connection of tubes, in particular boiler tubes, in plates, drums, flanges or the like. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE923488C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1023059B (en) * | 1954-06-28 | 1958-01-23 | Separator Ab | Pipeline connection piece for the connection plate of plate heat exchangers |
EP0034549A2 (en) * | 1980-02-15 | 1981-08-26 | VALLOUREC Société Anonyme dite. | Rolling-in process and tool for use in carrying out this process |
DE3302762A1 (en) * | 1982-08-11 | 1984-02-16 | Kokan Kako Co., Ltd., Yokohama, Kanagawa | Method for fixing a component on the outer circumference of a tube |
DE102007017876A1 (en) * | 2007-04-13 | 2008-10-30 | Sew-Eurodrive Gmbh & Co. Kg | Oil catching device, gearbox and method |
DE102007020453A1 (en) * | 2007-04-27 | 2008-11-06 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox, has pipe system for lubricating oil provided in interior of housing, and chamber provided in housing wall, where three pipes for lubricating oil opens out into chamber which is formed with recess |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE406622C (en) * | 1924-11-29 | Otto Leissner Dr | Method and device for fastening boiler tubes | |
DE713673C (en) * | 1935-11-13 | 1941-11-13 | Karl Gromus Ing | Pipe socket for welding to the end of boiling or smoke pipes |
-
1951
- 1951-08-17 DE DEST3747A patent/DE923488C/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE406622C (en) * | 1924-11-29 | Otto Leissner Dr | Method and device for fastening boiler tubes | |
DE713673C (en) * | 1935-11-13 | 1941-11-13 | Karl Gromus Ing | Pipe socket for welding to the end of boiling or smoke pipes |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1023059B (en) * | 1954-06-28 | 1958-01-23 | Separator Ab | Pipeline connection piece for the connection plate of plate heat exchangers |
EP0034549A2 (en) * | 1980-02-15 | 1981-08-26 | VALLOUREC Société Anonyme dite. | Rolling-in process and tool for use in carrying out this process |
EP0034549B1 (en) * | 1980-02-15 | 1983-10-26 | VALLOUREC Société Anonyme dite. | Rolling-in process and tool for use in carrying out this process |
DE3302762A1 (en) * | 1982-08-11 | 1984-02-16 | Kokan Kako Co., Ltd., Yokohama, Kanagawa | Method for fixing a component on the outer circumference of a tube |
DE102007017876A1 (en) * | 2007-04-13 | 2008-10-30 | Sew-Eurodrive Gmbh & Co. Kg | Oil catching device, gearbox and method |
DE102007017876B4 (en) * | 2007-04-13 | 2021-06-24 | Sew-Eurodrive Gmbh & Co Kg | Oil catcher, gearbox and procedure |
DE102007020453A1 (en) * | 2007-04-27 | 2008-11-06 | Sew-Eurodrive Gmbh & Co. Kg | Gearbox, has pipe system for lubricating oil provided in interior of housing, and chamber provided in housing wall, where three pipes for lubricating oil opens out into chamber which is formed with recess |
DE102007020453B4 (en) * | 2007-04-27 | 2012-05-16 | Sew-Eurodrive Gmbh & Co. Kg | Transmission, lubricant circulation system and transmission series |
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