DE442558C - Heating pipe steam generator, especially for high pressure - Google Patents

Heating pipe steam generator, especially for high pressure

Info

Publication number
DE442558C
DE442558C DEM96280D DEM0096280D DE442558C DE 442558 C DE442558 C DE 442558C DE M96280 D DEM96280 D DE M96280D DE M0096280 D DEM0096280 D DE M0096280D DE 442558 C DE442558 C DE 442558C
Authority
DE
Germany
Prior art keywords
boiler
steam generator
temperature
heating
high pressure
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
DEM96280D
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.)
WILHELM MATHIESEN DR
Original Assignee
WILHELM MATHIESEN DR
Publication date
Priority to DEM96280D priority Critical patent/DE442558C/en
Application granted granted Critical
Publication of DE442558C publication Critical patent/DE442558C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B9/00Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (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

Heizrohr-Dampferzeuger, insbesondere für hohen Druck. Es ist bekannt, einen Heizrohrkessel an jedem Ende mit einer drucksicheren Kammer zu versehen; die eine Kammer bildet aber den Brennraum, so daß in dieser Kaininer eine Temperatur herrscht, die weit über der Temperatur des Kesseldampfes liegt. Infolge der großen Temperaturverschiedenheit treten in der Wand des Kesselbodens große Wärmespannungen auf, die für den Kesselboden schädlich sind.Heating tube steam generator, especially for high pressure. It is known, to provide a heating tube boiler at each end with a pressure-proof chamber; the but a chamber forms the combustion chamber, so that there is a temperature in this chamber prevails, which is far above the temperature of the boiler steam. As a result of the great If there is a difference in temperature, great thermal stresses occur in the wall of the boiler bottom that are harmful to the boiler bottom.

Zur Vermeidung dieser Wärmespannungen soll nach der Erfindung in den beiden Endkammern die gleiche Temperatur vorhanden sein wie im Kessel, dann ist keiner der beiden Kesselböden irgendwelchen Wärmespannungen ausgesetzt.To avoid these thermal stresses, according to the invention, in the both end chambers must have the same temperature as in the boiler neither of the two boiler bottoms is exposed to any thermal stress.

In Abb. i der Zeichnung ist der senkrechte Schnitt eines aufrecht stehenden Kessels, in Abb. a ein teilweiser Horizontalschnitt dargestellt. Abb. 3 stellt einen senkrechten Längsschnitt durch einen liegenden Kessel und Abb. 4 einen Querschnitt dar.In Fig. I of the drawing, the vertical section of a is upright standing boiler, in Fig. a a partial horizontal section is shown. Fig. 3 shows a vertical longitudinal section through a lying boiler and fig. 4 a cross-section.

Erreicht wird der Zweck der Erfindung dadurch, daß die Beheizung des Kessels lediglich in den Heizrohren geschieht, wie aus der Zeichnung (Abb. i und 3) ersichtlich ist, und däß die in die Kammer a eintretende Verbrennungsluft durch Vorwärmung auf die Dampftemperatur gebracht wird. Die Heizgase, die durch die Heizrohre strömen, geben die Wärme so weit an den Kessel ab, daß sie beim Verlassen der Heizrohre, also bei ihrem Eintritt in die Abgasekammer b die gleiche Temperatur haben wie der Kesseldampf. Dies würde unter normalen Verhältnissen zu große Austauschflächen erfordern, bei der Feuerung unter Druck aber, die hier vorgesehen sein kann, d. h. bei einem Überdruck von beispielsweise 3 Atm. in den Brennräumen, werden die Austauschflächen im ganzen sehr klein, so daß die Temperaturgleichheit ohne eine allzu große Länge der Rohre zu erzielen ist. Es kann die Rohrlänge indes auch dadurch verkürzt werden, daß die Heizgase bei ihrem Austritt aus den Rohren gedrosselt werden, wie aus Abb. i zu ersehen ist, wo c eine Platte mit kleineren Öffnungen darstellt. Nach dem Durchfluß durch diese Öffnungen dehnen sich die Heizgase aus und verlieren dadurch an Wärme.The purpose of the invention is achieved in that the heating of the Boiler only happens in the heating pipes, as shown in the drawing (Fig. I and 3) can be seen, and that the combustion air entering chamber a passes through Preheating is brought to the steam temperature. The heating gases coming through the heating pipes flow, give off the heat to the boiler to such an extent that when it leaves the heating pipes, so when they enter the exhaust gas chamber b have the same temperature as the Boiler steam. Under normal conditions, this would require exchange areas that are too large, when firing under pressure, however, which can be provided here, d. H. at a Overpressure of, for example, 3 atm. in the combustion chambers are the exchange surfaces on the whole very small, so that the temperature equality without too great a length of the pipes is to be achieved. The pipe length can also be shortened by that the hot gases are throttled when they exit the pipes, as shown in Fig. i can be seen where c represents a plate with smaller openings. After the flow The heating gases expand through these openings and lose heat as a result.

Die Herabsetzung der Temperatur der Heizgase läßt sich auch dadurch erzielen, daß in die Abgasekammer Frischluft von niedrigerer Temperatur eingeführt wird, was mit Hilfe des Zuflußrohres d unter einer entsprechenden Mischurig der Gase erfolgen kann.The lowering of the temperature of the heating gases can also be achieved thereby achieve that fresh air is introduced at a lower temperature into the exhaust gas chamber is what with the help of the inlet pipe d under a corresponding Mischurig the Gases can take place.

Obwohl eine völlige Gleichheit der Temperatur in den betreffenden drei Räumen jede Wärmespannung in den Kesselböden vollständig ausschaltet, so werden im Betrieb doch Abweichungen vorkommen können. Solange diese Abweichungen keine Wärmespannungen hervorrufen, die bei der Berechnung der Wandstärken zu berücksichtigen sind, solange ist praktisch Wärmegleichheit vorhanden.Although a complete equality of temperature in the concerned three rooms completely eliminates any thermal stress in the boiler floors There may be deviations in operation. As long as these deviations are not Cause thermal stresses, which must be taken into account when calculating the wall thicknesses are, as long as there is practically equality of heat.

Claims (1)

PATENTANSPRÜCHE: i. Heizrohr-Dampferzeuger, insbesondere für hohen Druck, mit an jedem Ende des Kessels angeordneter drucksicherer Kammer, dadurch gekennzeichnet, daß die Beheizung des Kessels lediglich in den Heizrohren geschieht und durch Vorwärmung der Verbrennungsluft und Herabminderung der Temperatur der Heizgase in beiden Kammern praktisch die gleiche Temperatur erzielt wird, wie sie im Kessel herrscht. a. Heizrohr-Dampferzeuger nach Anspruch i, bei dem an Stelle der Herabminderung der Temperatur der Heizgase eine Erhöhung des Druckes im Brennraum stattfindet.PATENT CLAIMS: i. Heating tube steam generator, especially for high Pressure, with pressure-proof chamber arranged at each end of the boiler, thereby characterized in that the boiler is only heated in the heating pipes and by preheating the combustion air and reducing the temperature of the Heating gases in both chambers practically the same temperature is achieved as they prevails in the boiler. a. Heating tube steam generator according to claim i, in which in place the lowering of the temperature of the heating gases an increase in the pressure in the combustion chamber takes place.
DEM96280D Heating pipe steam generator, especially for high pressure Expired DE442558C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM96280D DE442558C (en) Heating pipe steam generator, especially for high pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM96280D DE442558C (en) Heating pipe steam generator, especially for high pressure

Publications (1)

Publication Number Publication Date
DE442558C true DE442558C (en) 1927-04-04

Family

ID=7323213

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM96280D Expired DE442558C (en) Heating pipe steam generator, especially for high pressure

Country Status (1)

Country Link
DE (1) DE442558C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1129517B (en) * 1955-10-25 1962-05-17 Foster Wheeler Ltd Direct fired heater
US4886337A (en) * 1987-08-31 1989-12-12 DantecElectronik, Medicinsk OG Videnskabeligt Måleudstyr A/S Manipulator device for the transfer of laser light into an optical fiber
DE19638851C1 (en) * 1996-09-21 1998-02-26 Oschatz Gmbh Steam generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1129517B (en) * 1955-10-25 1962-05-17 Foster Wheeler Ltd Direct fired heater
US4886337A (en) * 1987-08-31 1989-12-12 DantecElectronik, Medicinsk OG Videnskabeligt Måleudstyr A/S Manipulator device for the transfer of laser light into an optical fiber
DE19638851C1 (en) * 1996-09-21 1998-02-26 Oschatz Gmbh Steam generator

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