DE17837C - Spirally corrugated boiler tubes for steam boilers and processes for producing the same - Google Patents
Spirally corrugated boiler tubes for steam boilers and processes for producing the sameInfo
- Publication number
- DE17837C DE17837C DENDAT17837D DE17837DA DE17837C DE 17837 C DE17837 C DE 17837C DE NDAT17837 D DENDAT17837 D DE NDAT17837D DE 17837D A DE17837D A DE 17837DA DE 17837 C DE17837 C DE 17837C
- Authority
- DE
- Germany
- Prior art keywords
- same
- processes
- producing
- boiler tubes
- steam boilers
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- F22B37/12—Forms of water tubes, e.g. of varying cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMTPATENT OFFICE
Vor den gewöhnlichen cylindrischen Siederöhren haben diese schraubenförmig gewellten Siederöhren nach Ansicht des Erfinders folgende Vorzüge: Sie liefern eine gröfsere Heizfläche, werden ferner in. den Kesselendplatten nicht so leicht leck, da die Schwankungen in der Längenausdehnung der Röhren weniger energisch auf die Endplatten wirken, und schliefslich setzt sich weniger Flugasche in den Röhren ab, da der Strom der Heizgase wirbeiförmig in den Röhren wirkt und besser die festen Theile entfernt oder mitreifst, als der directe Zug durch die bisher benutzten geraden Heizröhren.In front of the usual cylindrical boiler tubes, these have helically undulating ones Boiler tubes, according to the inventor, have the following advantages: They provide a larger heating surface, will also not leak so easily in the boiler end plates because of the fluctuations in the linear expansion the tubes act less forcefully on the endplates, and eventually settles less fly ash in the tubes, as the flow of the heating gases is vortex-shaped in the tubes acts and removes or rips away the solid parts better than the direct pull through them hitherto used straight heating tubes.
Die Enden der Röhren werden cylindrisch auf den gröfsten Durchmesser belassen, um die Röhren einziehen zu können.The ends of the tubes are left cylindrical to the largest diameter, around the To be able to pull in tubes.
Fig. 3 stellt ein Stück eines solchen Heizrohres dar. Das Ende A ist cylindrisch. Der übrige Theil B zeigt die schraubenförmig gestalteten Wellenzüge des Rohres.Fig. 3 shows a piece of such a heating tube. The end A is cylindrical. The rest of Part B shows the helical wave trains of the tube.
Die Herstellung der Röhren erfolgt in der durch Fig. 1 und 2 erläuterten Weise. Ein eiserner oder stählerner Dorn D vom Durchmesser des Rohres im Lichten wird mit den verlangten Schraubengängen des fertigen Rohres versehen. Das ursprünglich glatte Rohr wird darüber geschoben und an einem Ende durch Schraubenbolzen e e oder anderweitig befestigt. Das Rohr wird nun mit dem Dorn zwischen die Spitzen einer Drehbank gebracht und ein auf dem Bett der Bank aufstehender Support F mit Hülfe der drei Rollen m m und η mit gewölbter Oberfläche an dem Rohr befestigt. Die Rollen sind mit Hülfe von drehbaren Zapfen s am Support gelagert, und zwar in solcher Weise, dafs zwei Rollen m m an einer Seite des Rohres in einem Abstande eines Gewindeganges, die dritte Rolle η dagegen gegenüber in der Mitte zwischen den Rollen m m sitzen. Die Rolle η wird mittelst der Schraube Η gegen das Rohr angeprefst, wodurch die drei Rollen das Rohr einwärts in die Züge des Domes pressen. Wird letzterer nun durch Hülfe eines Mitnehmers in langsame Drehung gesetzt, so gleitet der Support am Rohr entlang, und die Rollen, welche sich dabei etwas schräg einstellen, drücken die Rohrwand in die Gänge des Dornes hinein und erzeugen die schraubenförmige Gestalt des Rohres. The tubes are manufactured in the manner illustrated by FIGS. 1 and 2. An iron or steel mandrel D the diameter of the pipe in the clear is provided with the required screw threads of the finished pipe. The originally smooth tube is pushed over it and fastened at one end by screw bolts ee or otherwise. The pipe is now brought with the mandrel between the tips of a lathe and a support F standing on the bed of the bench is attached to the pipe with the aid of the three rollers mm and η with a curved surface. The rollers are mounted on the support with the aid of rotatable pins s , in such a way that two rollers mm sit on one side of the pipe at a distance of one thread, while the third roller η sits opposite in the middle between the rollers mm. The roller η is pressed against the pipe by means of the screw Η , whereby the three rollers press the pipe inwards into the trains of the dome. If the latter is now set in slow rotation with the aid of a driver, the support slides along the pipe, and the rollers, which are slightly inclined, push the pipe wall into the threads of the mandrel and create the helical shape of the pipe.
Nachdem die Windungen bis auf den Dorn niedergeprefst sind, werden die Schrauben e e gelöst und das Rohr über das eine verjüngte Ende des Dornes von demselben herunter gedreht. After the windings have been pressed down to the mandrel, the screws ee are loosened and the tube is rotated down from the mandrel via the one tapered end of the mandrel.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE17837C true DE17837C (en) |
Family
ID=294756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT17837D Active DE17837C (en) | Spirally corrugated boiler tubes for steam boilers and processes for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE17837C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094775B (en) * | 1956-07-16 | 1960-12-15 | Calumet & Hecla | Heat exchanger tube with a corrugated tube inserted inside an outer tube and in contact with it |
-
0
- DE DENDAT17837D patent/DE17837C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1094775B (en) * | 1956-07-16 | 1960-12-15 | Calumet & Hecla | Heat exchanger tube with a corrugated tube inserted inside an outer tube and in contact with it |
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