DE1602370A1 - Method and device for the production of double pipes - Google Patents

Method and device for the production of double pipes

Info

Publication number
DE1602370A1
DE1602370A1 DE19671602370 DE1602370A DE1602370A1 DE 1602370 A1 DE1602370 A1 DE 1602370A1 DE 19671602370 DE19671602370 DE 19671602370 DE 1602370 A DE1602370 A DE 1602370A DE 1602370 A1 DE1602370 A1 DE 1602370A1
Authority
DE
Germany
Prior art keywords
beads
pressure
pipe
production
offset
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.)
Pending
Application number
DE19671602370
Other languages
German (de)
Inventor
Joseph Reimann
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.)
Reisholz Stahl & Roehrenwerk
Original Assignee
Reisholz Stahl & Roehrenwerk
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 Reisholz Stahl & Roehrenwerk filed Critical Reisholz Stahl & Roehrenwerk
Publication of DE1602370A1 publication Critical patent/DE1602370A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

Verfahren und Vorrichtung zur Herstellung von Doppelrohren Gegenstand der Erfindung ist ein Verfahren und eine Vorrichtung zur Herstellung von Doppelrohren, z.B. für Wärmetauscher, Dampfüberhitzer u.a.. bei denen das Zentrieren des Innen-rohres durch die stellenweise umgeformte Wand des Mantelrohres erfolgt. Method and device for the production of double tubes The subject of the invention is a method and a device for the production of double tubes, eg for heat exchangers, steam superheaters, etc. in which the centering of the inner tube takes place through the wall of the jacket tube, which is deformed in places.

Doppel- bzw. Mantelrohre, durch Abstandhalter verschiedener Ausführung-voneinander getrennt, sind-seit langem bekannt (DRP 193 158, DRP 816 464, DAS 1 1.37 276" DRGm 1 495 28o, DBGM 1 695 383). Double or jacket pipes, separated from one another by spacers of different designs, have been known for a long time (DRP 193 158, DRP 816 464, DAS 1 1.37 276 "DRGm 1 495 28o, DBGM 1 695 383).

Nachteilig bei der bekannten Herstellung ist einmal der fertigungstechnische Aufwand; ferner die einzusetzenden Abstandhalter, die zwischen Innen- und Mantelrohr vorwiegend durch Schweißen befestigt werden müssen, was insbesondere bei dünnwandigen, druckführenden Rohren (Wärmetauscher.-Damptüberhitzer) zusätzliche So.hwach.ste-lle-n..ergibt.One disadvantage of the known production is the technical production Expenditure; also the spacers to be used between the inner pipe and the jacket pipe mainly have to be fastened by welding, which is particularly important in the case of thin-walled, pressurized pipes (heat exchanger.-steam superheater) additional So.hwach.ste-lle-n .. gives.

Aufgabe der Erfindung ist die Herstellung von genau-Aentrierten Doppelrohren ohne gesonderte Abstandhalter.The object of the invention is the production of precisely-aentred double tubes without separate spacers.

Es wird erfindungsgemäß'vorgeschlagen.' in dem Mär#telrohr' in beliebigen, d.h. den Erfordernissen angepaßten Abständen.. Sicken einzuformen., -- die -beIspielsweise um 1200-.versetzt- s-Indi; Das Einformen der Sicken erfolgt z.B. _durch eine Vorrichtung, mit der um 1200 versetzte, in hydraulisch bewegte Kglben eingesetzte, auswechselbare Druckstempel so weit In die Rohrwand eingepreßt werden, daß das Innenrohir saugend, etwa einem Hafteitz entsprechend, in das Mantelrohr eingeschoben werden kann. Die genaue Tiefeneinstellung erfolgt durch eine verstellbare Arretierung de's Kolbenhubes..,Durch einen mechanischen Vorschub.. beispielnweise über Führungsrollen wird das Mantelrohr kontinuierlich um den gewünschten Sickenabstand vorgeschoben.It is "proposed" according to the invention. to form in the Mär # telrohr 'in any, ie the requirements adapted intervals .. beads., - the -for example, by 1200-.staggered- s-Indi; The corrugations are formed, for example, by means of a device with which replaceable plungers, offset by 1200 and inserted in hydraulically moved buckets, are pressed so far into the pipe wall that the inner pipe can be pushed into the casing pipe in a sucking manner, approximately in accordance with adhesion. The exact depth setting is done by an adjustable locking of the piston stroke .., By a mechanical feed .. for example by means of guide rollers, the jacket pipe is continuously advanced by the desired bead spacing.

Wenn es für die Durchführung des Mediums zwischen Innen- und Mantelrohr erforderlich ist, kann das Rohr beim Vorschub um eine beliebige Gradzahl verdreht werden. Hi.erdurch entstehen schraubenlinienförmig versetzte Sicken, die den Durchfluß des Mediums entsprechend beeinflussen. Die Anordnung kann auch so erfolgen, daß die drei Sicken nicht in einer Ebene, sondern in Längsrichtung versetzt liegen. In dem erfindungsgemäß hergestellten Doppelrohr sind die eingeformten Sicken so toleriert, daß das Innenrohr ohne zu vibrieren von den Sicken gehalten wird, aber ohne großen Kraftaufwand, unter Nutzung der Elastizität beider Rohre, eingeschoben und herausgezogen werden kann. Diese Anordnung ist besonders bei der Montage oder bei Reparaturen vorteilhaft. Ein weiterer Vorteil gegenüber bekannten Mantelrohren liegt in dem großen lichten Durchgang für das Medium, der nur gering durch die eingeformten Sicken beeinträchtigt wird.If it is for the implementation of the medium between the inner and jacket pipe is required, the pipe can be rotated by any number of degrees while it is being advanced will. This results in helically offset beads that facilitate the flow affect the medium accordingly. The arrangement can also be made so that the three beads are not in one plane, but offset in the longitudinal direction. In the double tube produced according to the invention, the molded beads are like this tolerates that the inner tube is held by the beads without vibrating, but inserted without great effort, using the elasticity of both tubes and can be pulled out. This arrangement is particularly useful when assembling or advantageous for repairs. Another advantage over known jacket pipes lies in the large clear passage for the medium, which is only slightly through the molded Beading is affected.

In der beigefügten Zeichnung ist die erfindungsgemäße Vorrichtung und das Doppelrohr schematisch dargestellt. - Es zeigen: Fig. 1 eine Vorderansicht der Vorrichtung mit eingeführtem Mantelrohr nach dem Einpressen der Druckstempel, Fig. 2 einen Querschnitt des Mantelrohres mit eingeschobenem, durch Sicken gehaltenen Innenrohr. In der in Fig. 1 gezeigten Vorrichtung werden in das Mante1r.ohr (1) durch drei um 1200 versetzte Druckstempel (2), die durch hydraulische Kolben (3) bewegt werden, Sicken (4) eingepreßt, die das Innenrohr (5) halten.In the accompanying drawing, the device according to the invention and the double pipe are shown schematically. - It show: Fig. 1 is a front view of the device with inserted Jacket pipe after pressing in the pressure stamp, Fig. 2 shows a cross section of the jacket pipe with inserted, Inner tube held by beads. In the device shown in Fig. 1 , beads (4), which hold the inner tube (5), are pressed into the Mante1r.ohr (1) by three plungers (2) offset by 1200 and moved by hydraulic pistons (3) .

Bei dem Verfahren zur Herstellung des Doppelrohres wird das_ Mantelrohr (1) auf einer geeigneten, nicht gezeigten Zuführung in den Preß- bzw. Walzenkopf eingeführt. In vorausbestimmten Abständen wird die Hydraulik betätigt und die Druckstempel (2) bzw. Walzen werden gleichmäßig und konzentrisch, in das Mant61-rohr (1) gepreßt.In the method for producing the double tube, the jacket tube (1) is introduced into the press or roller head on a suitable feeder (not shown). The hydraulic system is actuated at predetermined intervals and the pressure stamps (2) or rollers are pressed evenly and concentrically into the Mant61 tube (1).

Claims (2)

Patentansprüche: 1. Verfahren zur Herstellung von Doppelrohren, z.B. für Wärmetauscher bzw. D-amp:tüberhitzer., dadurch gekennzeichnet, daß das Innenrohr (5) schwingungsfrei durch Einformen von mindestens drei uffi 120 0 versetzten Sicken (4) in dem Mantelrohr zentriert wird. Claims: 1. Process for the production of double pipes, e.g. for heat exchangers or D-amp: tüberhitzer., Characterized in that the inner pipe (5) is centered vibration-free by molding at least three 120 0 offset beads (4) in the jacket pipe . 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Sicken (4) in Schraubenlinien auf dem Umfang des Mantelrohres (1) eingeformt werden, 3. Verfahren nach'den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das Einformen der Sicken (4) durch Walzen erfolgt. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß der Arbeitsablauf automatisch und programmgesteuert abläuft. 5.'Vorrichtung des Verfahrens nach den Ansprüchen 1-bis'4" gekennzeichnet durch mindestens drei um 1200 versetzte hydraulische Druckkolben (3), worin die Druckstempel (2) eingesetzt sind und eine Rohrvorschubeinrichtung, die längs und radial verstellbai# ist. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Bewegung der Druckstempel (2) konzentrisch erfolgt. 7. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß anstelle des Druckstempels (2)-eine Druckrolle angeordnet ist.2. The method according to claim 1, characterized in that the beads (4) are molded in helical lines on the circumference of the jacket tube (1) , 3. Method nach'den claims 1 and 2, characterized in that the molding of the beads (4 ) is done by rolling. 4. The method according to claims 1 to 3, characterized in that the workflow runs automatically and under program control. 5. Device of the method according to claims 1-4 "characterized by at least three hydraulic pressure pistons (3) offset by 1200, in which the pressure rams (2) are inserted and a pipe feed device which is longitudinally and radially adjustable . Device according to claim 5, characterized in that the movement of the pressure stamps (2) takes place concentrically 7. Device according to claim 5, characterized in that a pressure roller is arranged instead of the pressure stamp (2).
DE19671602370 1967-12-04 1967-12-04 Method and device for the production of double pipes Pending DE1602370A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST027631 1967-12-04

Publications (1)

Publication Number Publication Date
DE1602370A1 true DE1602370A1 (en) 1970-08-06

Family

ID=7461505

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671602370 Pending DE1602370A1 (en) 1967-12-04 1967-12-04 Method and device for the production of double pipes

Country Status (1)

Country Link
DE (1) DE1602370A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369034A1 (en) * 1976-10-28 1978-05-26 Gen Electric METHOD OF MANUFACTURING A CONCENTRIC TUBE HEAT EXCHANGER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2369034A1 (en) * 1976-10-28 1978-05-26 Gen Electric METHOD OF MANUFACTURING A CONCENTRIC TUBE HEAT EXCHANGER

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