DE3200027A1 - Chimney with variable end cross-section - Google Patents

Chimney with variable end cross-section

Info

Publication number
DE3200027A1
DE3200027A1 DE19823200027 DE3200027A DE3200027A1 DE 3200027 A1 DE3200027 A1 DE 3200027A1 DE 19823200027 DE19823200027 DE 19823200027 DE 3200027 A DE3200027 A DE 3200027A DE 3200027 A1 DE3200027 A1 DE 3200027A1
Authority
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Germany
Prior art keywords
chimney
section
waste gas
cross
exit
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.)
Ceased
Application number
DE19823200027
Other languages
German (de)
Inventor
Gerd Dr.-Ing. 5100 Aachen Ehrhardt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19823200027 priority Critical patent/DE3200027A1/en
Publication of DE3200027A1 publication Critical patent/DE3200027A1/en
Ceased legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J11/00Devices for conducting smoke or fumes, e.g. flues 
    • F23J11/02Devices for conducting smoke or fumes, e.g. flues  for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L13/00Construction of valves or dampers for controlling air supply or draught

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chimneys And Flues (AREA)

Abstract

In known collecting chimneys, waste gases from a number of sources are guided upwards either in a collecting pipe or in separate pipes which are held by a support pipe which is not flowed through. The collecting pipe has the disadvantage that the exit speed of the waste gases then becomes too low if one or a number of waste gas sources stop. The separately guided pipes mostly have a relatively large pressure loss coefficient and are together with the support pipe considerably more expensive than the collecting pipe. These disadvantages are eliminated in the chimney (Fig. 1) according to the invention in that the waste gas pipes of the individual waste gas sources already end slightly above the chimney root in a collector and in that the collecting pipe has a variable end cross-section which is reduced in the event of stoppage of one or a number of waste gas sources to such an extent that the exit speed does not fall below a minimum permitted value. The exit cross-section is produced with lamellae of an iris diaphragm or with trapezoidal plates which are rotatable about horizontal axes, and can be adjusted automatically according to the speed required. <IMAGE>

Description

Schornstein mit Vercflderbarem Endquerschnitt Chimney with a condensable end section

Die vorliegende Erfindung betrifft einen Schornstein mit veränderbaren Endquerschnitt zur Vermeidung zu geringer Austrittsgeschwindigkeit.The present invention relates to a chimney with changeable End cross-section to avoid excessively low exit velocity.

Die Austrittsgeschwindigkeiteines Abgases aus einem Schornstein ist dann zu gering, wenn das Abgas eine Inversionsschicht nicht durchdringen kann oder wenn es im Windschatten des Schornsteines nach unten strömt. Zu geringe Austrittsgeschwindigkeiten entstehen durch zu geringen Volumenstrom und/oder zu großen Austrittsquerschnitt.The exit velocity of an exhaust gas from a chimney is too low if the exhaust gas cannot penetrate an inversion layer or when it flows down in the lee of the chimney. Exit speeds too low arise due to insufficient volume flow and / or too large an outlet cross-section.

Bekannt sind Schornsteine mit Ventilator, der bei. zu geringem Volumenstrom des Abgases zusätzlich Luft durch den Schornstein fördert. Nachteile dieses Verfahrens sind neben der Temperaturabsenkung die Investitions- und Betriebskosten für den Ventilator und die zugehörigen Antriebs- und Pegeleinrichtungen.Chimneys with a fan are known. too low volume flow of the exhaust gas also promotes air through the chimney. Disadvantages of this procedure are, in addition to the temperature reduction, the investment and operating costs for the Fan and the associated drive and level devices.

Bekannt sind ferner Saramelachornateine mit achsparallelen senkrechten Abgasleitungen, in denen die Abgase jeweils nur einer Ablasquelle strömen. Beim Ausfall einer oder mehrerer Quellen ändert sich die Austrittsgeschwindigkeit aus den Abgasleitungen der brin Quellen nicht, liachtelle dieses Verfahrens sind die hohen Investitionskosten für die ochführung der einzelnen Abbasteitungen und für das sie tragende Gerüst oder für die sie umhüllende tragende Röhre, in der sie verankert werden.Saramelachornateine with axially parallel perpendiculars are also known Exhaust pipes in which the exhaust gases flow from only one exhaust source at a time. At the If one or more sources fail, the exit velocity changes the exhaust pipes Don't bring sources, liachtelle this procedure are the high investment costs for the implementation of the individual digging lines and for the framework that supports them or for the supporting tube that surrounds them, in which they are anchored.

Die Erfindung bezweckt die Schaffung von Schornsteinen, deren Caseustrittsgeschsindigkeit nicht zu gering werden kann, und zwar unter Ausschaltung der oben genannten Nachteile der bekannten Verfahren. Der diese Aufgabe lösende Schornstein zeichnet sich durch einen veränderbaren Endquerschnitt aus, der bei sind kendem Volu.menstrom so veikleinert wird, daß die Gasaustrittst geschwindigkeit ihren Mindestwert, der von Wetter- und Gasdaten und von der Schornsteinhöhe abhängt, nicht unterschreitet. Der erfindungemße Schornstein vermeidet den oben genannten Ventilator. Die Abgasleitungen meiirerer Abgasquellen enden beim erfirudungsgemåßen Schornstein an dessen unterem Ende in einem Sammler, Dadurch wird das oben genannte tragende Gerüst vermieden, und die röhre dient nicht mehr zum Tragen einzelner Abgasleituen sondern als dic die Abgas in die Höhe führende Röhre.The aim of the invention is to create chimneys whose case exit speed cannot become too small, with elimination of the disadvantages mentioned above the known procedures. The chimney that solves this task is characterized by a variable end cross-section, which is so reduced when the volume flow is lower that the gas outlet speed is its minimum value, that of the weather and Gas data and depends on the chimney height. The inventive Chimney avoids the fan mentioned above. The exhaust pipes meiirerer Flue gas sources end in the chimney according to the invention at its lower end in a collector, this avoids the aforementioned supporting structure, and the The pipe is no longer used to carry individual exhaust pipes but as the exhaust gas tube leading upwards.

Infolge der durch die Querschnittsver;inderung beim erfindungsgemäßen Schornstein verursachten konvektiven Beschleunigung des Abgases sind der Potentialkern des austretenden Gasstrahles länger und seine Breitenzunahme geringer als bei herkömmlichen Schornsteinen. Zudem erhält der Abgasstrahl beim erfindungsgemäßen Schornstein einen höheren Austrittsimpuls und hält sich auch aus diese Grund länger als der aus einem herkömmlichen Schornstein austretende Strahl.As a result of the change in cross section in the invention The convective acceleration of the exhaust gas caused by the chimney is the potential core of the exiting gas jet is longer and its increase in width is less than with conventional ones Chimneys. In addition, the exhaust gas jet in the chimney according to the invention receives a higher exit impulse and lasts longer than the one for this reason conventional chimney escaping jet.

Die Erfindung wird anhand zweier Ausführungsbeispiele in den Figuren 1, 2 und 3 nähererläutert. Fig. 1 und Fig. 2 zeigen den erfindungsbemäßen Schornstein in Längsschnitten, Fig. 3 ist eine Aufsicht auf Fig. 2.The invention is illustrated by means of two exemplary embodiments in the figures 1, 2 and 3 explained in more detail. Fig. 1 and Fig. 2 show the chimney according to the invention in longitudinal sections, FIG. 3 is a plan view of FIG. 2.

Die Abgasleitungen 2 von beispielsweise vier Abgasquellen münden in den Sammler 3 und enden mit ihren Rohrbögen. An den Sammler 3 schließt sich kurz hinter dem Ende der Abgasleitungen 2 die Röhre 1 an, deren lichter Querschnitt gleich der Summe der lichten Querschnitte der Ab;aslei.tungen 2 ist und daher kleiner ist als der lichte Q«erechnitt des Sammlers 3 Hiedurch werden die Druckverluste, die durch die Vermischung der in der Regel mit unterschiedlichen Geschwindigkeiten aus en Abgasleitungen 2 austretenden Gase entstehen, gering gehalten Die Röhre 1 weist an oberen Ende einen veranderbaren Strömungsquerschnitt auf, der in Fig 1 durch Lamellen 4 einer Irisblende 5 und in FigD 2 durch um Achsen 7 drehbare trapezförmige Platten 6, die mit G;gengvewichten 8 oder mit Federn 9 versehen sind, einstellbar ist Beim Nachlassen des Volumenstromes, beispielsweise durch den Wegfall einer Abga.aquelle bedingt, wird die Mindestau6trittsgeschwiWdigkeit durch Querschnittsverninderung mittels der Lamellen 4 oder der drehbaren Platten 6 wieder eingestellt Die Austrittsgeschwindigkeit kann mit einer nicht eingezeichneten Sonde, zoBe Anemometer oder Staurohr, gemessen und mit dem Mindestwert verglichen werden Ein von einer Regeleinrichtung angesteuerter Motor verstellt dann die Lamellen 4 oder dreht die Platten 6. Werden die Platten 6 mit Gegengewichten 8 oder mit Federn 9 so versehen, daß sich bei maximalem Volumenstrom der Querschnitt entsprechend der Mindestaustrittsgeschwindigkeit einstellt, so neigen sich die Platten 6 bei nachlassendem Volumenstrom nach innen, sodaß die Mindestaustrittsgeschwindigkeit infolge des reduzierten Strömungsquerschnittes weitestgehend erhalten bleibt. Bei der Regelung mit Hilfe der Platten 6 entzieht die Abschirmung 10 die Platten 6 dem störenden Einfluß des Windes.The exhaust pipes 2 of, for example, four exhaust gas sources open into the collector 3 and end with their pipe bends. The collector 3 is short-circuited behind the end of the exhaust pipes 2, the tube 1, whose clear cross-section is the same the sum of the clear cross-sections of the ducts is 2 and therefore smaller is as the clear cross section of the collector 3 by mixing them up, usually at different speeds en exhaust pipes 2 emerging gases, kept low The pipe 1 has at the upper end a variable flow cross-section, which in Fig. 1 by Lamellae 4 of an iris diaphragm 5 and, in FIG. 2, by trapezoidal ones rotatable about axes 7 Plates 6, which are provided with counterweights 8 or with springs 9, adjustable is when the volume flow decreases, for example due to the omission of an exhaust source conditionally, the minimum entry speed is determined by a reduction in the cross-section by means of the lamellas 4 or the rotatable plates 6 adjusted again. The exit speed can be measured with a probe not shown, e.g. anemometer or pitot tube and compared with the minimum value A controlled by a control device The motor then adjusts the slats 4 or rotates the plates 6. The plates 6 with counterweights 8 or with springs 9 so that at maximum volume flow the cross-section adjusts according to the minimum exit speed, so incline the plates 6 move inwards when the volume flow decreases, so that the minimum exit velocity is largely retained due to the reduced flow cross-section. at the control with the help of the plates 6, the shield 10 removes the plates 6 from the disturbing influence of the wind.

3 Figuren 5 Patentansprüche3 Figures 5 claims

Claims (2)

Patentansprüche Schornstein für eine oder mehrere Abgasquellen, d a d u r c h -( g e k e n n z e i c h n e t, daß die Abgasleitungen (2) kurz hinter der Einführung in den Sammler (3) enden, daß der lichte Querschnitt der Röhre (1) etwa gleich der Summe der lichten Querschnitte der Abgasleitungen (2) ist und daß der Strömungequerschnitt am Schornsteinende einstellbar ist.Chimney for one or more exhaust gas sources, d a d u r c h - (g e k e n n n z e i c h n e t that the exhaust pipes (2) just behind the introduction into the collector (3) end so that the clear cross-section of the tube (1) is approximately equal to the sum of the clear cross-sections of the exhaust pipes (2) and that the flow cross-section at the end of the chimney is adjustable. 2. Schornstein nach Anspruch 1, d a d u r c h g e k e n n z e i c hn e t, daß der Strömungsquerschnitt am Schornsteinende durch Lamellen (4) einer Irisbiende (5) oder durch um Achsen (7) drehbare trapezförmige Platten (6) einstellbar ist.2. Chimney according to claim 1, d a d u r c h g e k e n n z e i c hn e t that the flow cross-section at the end of the chimney by lamellae (4) a Iris diaphragm (5) or adjustable by trapezoidal plates (6) that can be rotated about axes (7) is. i. Schornstein nach Ansprüchen 1 und 2, d a d u r c h g e -k e n n z e i c h n e t, daß die Austrittsgeschwindigkeit gemessen und durch motorbetätigte Änderung des Strömungsquerschnittes am Schornsteinende auf einen Wert geregelt wird, der größer oder gleich dem der Mindestaustrittsgeschwindigkeit ist. i. Chimney according to claims 1 and 2, d a d u r c h g e -k e n It does not indicate that the exit velocity is measured and operated by motor Change of the flow cross-section at the end of the chimney is regulated to a value, which is greater than or equal to the minimum exit speed. Schornstein nach AnsprUchen 1 und 2, d a d u r c h g e -k e n n z e i c h n e t, daß die Platten (6) mit Gegengewichten (7) oder mit Federn (9) so versehen sind, daß sie bei nach lassendem Volumenstrom durch selbstätige Verkleinerung des Strömungaquerschnittes am Schornsteineinde die Austrittsgeschwindigkeit auf einen Wert regeln, der größer oder gleich dem der Windestaustrittsgeschwindigkeit ist. Chimney according to claims 1 and 2, d u r c h g e -k e n n z e i c h n e t that the plates (6) with counterweights (7) or with springs (9) so are provided that they are automatically reduced when the volume flow decreases of the flow cross-section at the chimney bark on the exit velocity regulate a value that is greater than or equal to that of the windest exit speed is. Schornstein nach AnsprUchen 1, 3 und 4, d a d u r c h g e -k e n n z e i c h n e t, daß die Platten (6) durch eine Abschirmung (10) dem störenden Einfluß des Windes entzogen werden. Chimney according to claims 1, 3 and 4, d u r c h g e -k e n n z e i c h n e t that the plates (6) by a shield (10) the disruptive Influence of the wind are withdrawn.
DE19823200027 1982-01-02 1982-01-02 Chimney with variable end cross-section Ceased DE3200027A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823200027 DE3200027A1 (en) 1982-01-02 1982-01-02 Chimney with variable end cross-section

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Application Number Priority Date Filing Date Title
DE19823200027 DE3200027A1 (en) 1982-01-02 1982-01-02 Chimney with variable end cross-section

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DE3200027A1 true DE3200027A1 (en) 1983-07-14

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909884A1 (en) * 1988-03-31 1989-10-12 Vaillant Joh Gmbh & Co Exhaust system of a burner-heated device and device for testing the functional capability of an exhaust sensor arranged in such an exhaust system
CN103353119A (en) * 2013-06-27 2013-10-16 青岛华瑞丰机械有限公司 Device for increasing smoke emission height of chimney
DE102015100685A1 (en) * 2015-01-19 2016-07-21 Fr. Lürssen Werft Gmbh & Co. Kg Apparatus and method for removing exhaust gas from an exhaust system
CN113915632A (en) * 2021-09-08 2022-01-11 贵州省习水鼎泰能源开发有限责任公司 Flue assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203412B (en) * 1957-02-25 1965-10-21 Licentia Gmbh Device built into a chimney opening to change the outflow speed of gases and fumes
US4232595A (en) * 1978-06-15 1980-11-11 Jefco Laboratories, Incorporated Exhaust system for smokestack

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203412B (en) * 1957-02-25 1965-10-21 Licentia Gmbh Device built into a chimney opening to change the outflow speed of gases and fumes
US4232595A (en) * 1978-06-15 1980-11-11 Jefco Laboratories, Incorporated Exhaust system for smokestack

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Z.: "Technische Mitteilungen" 57.Jg., H.12, 1964, S.581-589 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909884A1 (en) * 1988-03-31 1989-10-12 Vaillant Joh Gmbh & Co Exhaust system of a burner-heated device and device for testing the functional capability of an exhaust sensor arranged in such an exhaust system
DE3909884C2 (en) * 1988-03-31 1995-02-09 Vaillant Joh Gmbh & Co Device for checking the functionality of an exhaust gas sensor arranged in an exhaust gas duct of a burner-heated device
CN103353119A (en) * 2013-06-27 2013-10-16 青岛华瑞丰机械有限公司 Device for increasing smoke emission height of chimney
DE102015100685A1 (en) * 2015-01-19 2016-07-21 Fr. Lürssen Werft Gmbh & Co. Kg Apparatus and method for removing exhaust gas from an exhaust system
DE102015100685B4 (en) * 2015-01-19 2017-08-03 Fr. Lürssen Werft Gmbh & Co. Kg Device, ship's chimney and ship with such a device and method for discharging exhaust gas from an exhaust system
CN113915632A (en) * 2021-09-08 2022-01-11 贵州省习水鼎泰能源开发有限责任公司 Flue assembly

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