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DE450232C - The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside - Google Patents

The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside

Info

Publication number
DE450232C
DE450232C DEL60054D DEL0060054D DE450232C DE 450232 C DE450232 C DE 450232C DE L60054 D DEL60054 D DE L60054D DE L0060054 D DEL0060054 D DE L0060054D DE 450232 C DE450232 C DE 450232C
Authority
DE
Germany
Prior art keywords
outside
ribs
smooth
screw
shaped ribs
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
DEL60054D
Other languages
German (de)
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.)
OTTO LEISSNER DR
Original Assignee
OTTO LEISSNER DR
Publication date
Priority to DEL60054D priority Critical patent/DE450232C/en
Application granted granted Critical
Publication of DE450232C publication Critical patent/DE450232C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes or flue ways

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Außen mit schraubenförmigen Rippen versehenes und innen glattes Vorwärmerrohr. Die Erfindung bezieht sich auf Vorwärmerrohre, die außen mit schraubenförmigen Rippen versehen und innen glatt sind. Während man bisher die 'schraubenförmigen Rippen für solche Rohre getrennt hergestellt und mit dem Röhrenkörper durch Gießvorgang verbunden hat, wobei sich das flüssige Metall mit den Rippen verschweißt, sind gemäß vorliegender Erfindung Rippen und Rohr in einem Gußgange aus einem Stück gegossen. Das Vorwärmerrohr bildet daher mit den schraubenförmigen Rippen einen einheitlichen Gußkörper. Hierdurch wird, abgesehen von der besseren Wärmeleitung, ,eine höhere Festigkeit und Versteifung der Rohre in der Längsrichtung gegen Bruchgefahr erzielt.Preheater tube with helical ribs on the outside and smooth on the inside. The invention relates to preheater tubes that have helical ribs on the outside and are smooth inside. While so far the 'helical ribs manufactured separately for such tubes and with the tube body by casting connected, with the liquid metal being welded to the ribs, are according to According to the present invention, ribs and tube are cast in one piece from a single casting. The preheater tube therefore forms a unitary one with the helical ribs Cast body. As a result, apart from the better heat conduction, a higher Strength and stiffening of the pipes in the longitudinal direction against the risk of breakage achieved.

Auf der Zeichnung sind in Abb. i bis 3 einige Ausführungsbeispiele der Erfindung dargestellt.In the drawing, some exemplary embodiments are shown in FIGS. 1 to 3 of the invention shown.

In i@.bb. i ist a das Economiserrohr, das außen mit schraubenförmig verlaufenden, mit dem Rohr .aus einem Stück bestehenden Rippen b versehen ist, während es innen glatt ist, um Ablagerungen von Kesselstein mit den üblichen Mitteln, die zum Reinigen von Rohren dienen, entfernen zu können.In i @ .bb. i is a the economiser pipe that is helical on the outside with extending, with the tube. One-piece ribs b is provided while it is smooth inside to remove scale deposits with the usual means that serve to clean pipes to be able to remove.

Bei der Ausführungsform nach Abb. 2 der Zeichnung ist das Economiserrohr a gleichfalls mit schraubenförmigen Rippen, b versehen, jedoch hat hier die schraubenförmige Rippe b eine zu Abb. i entgegengesetzt geAichtete Steigung.In the embodiment according to Fig. 2 of the drawing, the economiser pipe is a also has helical ribs, b, but here has the helical one Rib b has a slope opposite to Fig. I.

In Abb. 3 sind zwei Economiserrohre a dargestellt, deren schraubenförmige Rippen b, die, wie gezeichnet, von gleichgerichteter Steigung sind, jedoch auch entgegengesetzt gerichtete Steigung haben können, zum Teil ineinandergreifen.In Fig. 3 two economiser tubes a are shown, their helical Ribs b, which, as shown, are of the same slope, but also oppositely directed slope can have, interlocking in part.

Anstatt einer eingängigen Schraubenrippe können auch mehrgängige Schraubenrippen vorgesehen sein.Instead of a single-thread screw rib, multi-thread screw ribs can also be used be provided.

Claims (3)

PATENTANSPRÜCHE: i. Außen mit schraubenförmigen Rippen versehenes und innen glattes Vorwärmerrohr, dadurch gekennzeichnet, daß das Rohr mit den Rippen aus einem Stück gegossen ist. PATENT CLAIMS: i. The preheater tube provided with helical ribs on the outside and smooth on the inside, characterized in that the tube with the ribs is cast in one piece. 2. Economiserrohr nach Anspruch i, dadurch gekennzeichnet, daß die schraubenförmigen Rippen bei je zwei benachbarten Röhren abwechselnd rechts- und linksgängig gestellt sind. 2. economiser pipe according to claim i, characterized in that that the helical ribs on every two adjacent tubes alternate to the right and are left-handed. 3. Economiserrohr nach Anspruch i und 2, dadurch gekennzeichnet, daß die Rippen benachbarter Rohre einander übergreifen. 3. economiser pipe according to claim i and 2, characterized in that the ribs of adjacent pipes overlap one another.
DEL60054D The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside Expired DE450232C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL60054D DE450232C (en) The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL60054D DE450232C (en) The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside

Publications (1)

Publication Number Publication Date
DE450232C true DE450232C (en) 1927-10-03

Family

ID=7280001

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL60054D Expired DE450232C (en) The preheater pipe is provided with screw-shaped ribs on the outside and smooth on the inside

Country Status (1)

Country Link
DE (1) DE450232C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714879A1 (en) * 1987-05-05 1988-11-24 Reininger Klaus Dieter Apparatus for utilising waste-gas heat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714879A1 (en) * 1987-05-05 1988-11-24 Reininger Klaus Dieter Apparatus for utilising waste-gas heat

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