EP2985529B1 - Verbrennungssystem und Verfahren zum Betrieb davon - Google Patents

Verbrennungssystem und Verfahren zum Betrieb davon Download PDF

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Publication number
EP2985529B1
EP2985529B1 EP14180981.4A EP14180981A EP2985529B1 EP 2985529 B1 EP2985529 B1 EP 2985529B1 EP 14180981 A EP14180981 A EP 14180981A EP 2985529 B1 EP2985529 B1 EP 2985529B1
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EP
European Patent Office
Prior art keywords
gas
burner
phase
combustion
burners
Prior art date
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Application number
EP14180981.4A
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English (en)
French (fr)
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EP2985529A1 (de
Inventor
Piet Blaauwwiekel
Radovan Bakos
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.)
Garrett Motion SARL
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Honeywell Technologies SARL
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Publication date
Application filed by Honeywell Technologies SARL filed Critical Honeywell Technologies SARL
Priority to EP14180981.4A priority Critical patent/EP2985529B1/de
Publication of EP2985529A1 publication Critical patent/EP2985529A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J11/00—Devices for conducting smoke or fumes, e.g. flues 
    • F23J11/12—Smoke conduit systems for factories or large buildings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2211/00—Flue gas duct systems
    • F23J2211/20—Common flues for several combustion devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/02—Controlling two or more burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/04—Gas or oil fired boiler
    • F24D2200/043—More than one gas or oil fired boiler

Definitions

  • the present patent application relates to a combustion system and to a method for operating a combustion system.
  • Combustion systems comprising a plurality of gas burners and a common exhaust pipe for the plurality of gas burners are known from the prior art.
  • DE 10 2010 054 807 A1 discloses a combustion system comprising a plurality of gas burners and a common exhaust pipe for the plurality of gas burners, wherein all gas burners are positioned within a common combustion chamber so that the combustion system provides a single boiler having several gas burners.
  • gas and air are provided to the gas burners by fans sucking in the gas and the air.
  • the gas becomes combusted resulting in exhaust gas that flows into the common exhaust pipe.
  • burner-off phases of the gas burners of the combustion system no gas and air are provided to the gas burners.
  • the gas burners of the combustion system will only combust gas in case all fans are running.
  • EP 2 428 732 A2 discloses a combustion system comprising a single boiler with a single gas burner being positioned in the combustion chamber of the boiler.
  • An exhaust gas sensor is assigned to an exhaust pipe of the boiler. The signal provided by the exhaust gas sensor is used to perform a combustion adaption for the gas burner.
  • a combustion system according to the preamble of claim 1 is disclosed in US 2010/0330512 A1 .
  • a combustion system according to the preamble of claim 2 is disclosed in NL 6610804 .
  • the combustion system is defined in claim 1 or in claim 2.
  • the invention allows a combustion adaption for a combustion system comprising a plurality of gas burners based on a signal provided by a common exhaust sensor. It is no longer necessary to have for each gas burner of the combustion system an individual exhaust sensor. The number of exhaust gas sensors and thereby the costs for a combustion system comprising a plurality of gas burners can be reduced.
  • the invention relates to a combustion system and to a method for operating a combustion system.
  • Figures 1 and 2 both show a first embodiment of a combustion system 10 according to the present invention.
  • the combustion system 10 of Figures 1 and 2 comprises a plurality of gas burners 11a, 11b, 11c.
  • Each gas burner 11a, 11b, 11c is is positioned within an individual combustion chamber 12a, 12b, 12c so that the combustion systems 10 comprises a plurality of boilers 13a, 13b, 13c each having one gas burner 11a, 11b, 11c.
  • the combustion system 10 further comprises a common exhaust pipe 14 for the plurality of gas burners 11a, 11b, 11c.
  • Each boiler 13a, 13b, 13c communicates with the common exhaust pipe 14 in such a way that exhaust gas resulting from a combustion of gas with the combustion chamber 12a, 12b, 12c of the respective boiler 13a, 13b, 13c is directed into the common exhaust pipe 14.
  • air can be provided to the same for pre-purge and post-purge to clean the respective combustion chamber 12a, 12b, 12c before and after a burner-on phase.
  • a valve 17a, 17b, 17c is assigned to each boiler 13a, 13b, 13c so that in a burner-off phase of the respective gas burner 11a, 11b, 11c the combustion chamber 12a, 12b, 12c of the respective boiler 13a, 13b, 13c can be separated from the common exhaust pipe 14 by closing the respective valve 17a, 17b, 17c.
  • the respective valve 17a, 17b, 17c is opened allowing the exhaust gas to flow into the common exhaust pipe 14.
  • a burner-off phase of a boiler 13a, 13b, 13c the respective valve 17a, 17b, 17c is closed preventing a back flow of exhaust gas from the common exhaust pipe 14 into the combustion chamber 12a, 12b, 12c of the respective boiler 13a, 13b, 13c.
  • a transitional phase when only air can may be provided to the combustion chamber 12a, 12b, 12c for pre-purge and post-purge purposes the respective valve 17a, 17b, 17c is opened allowing to clean the respective combustion chamber 12a, 12b, 12c.
  • the combustion system 10 shown in Figures 1 and 2 further comprises a common controller 15 for all gas burners 11a, 11b, 11c or all boilers 13a, 13b, 13c. Such a controller controls each boiler 13a, 13b, 13c individually.
  • a common exhaust gas sensor 16 is assigned to the common exhaust pipe 14.
  • the exhaust gas sensor 16 analyses the exhaust gas.
  • the exhaust gas sensor 16 can be a CO-sensor or CO e -sensor or O 2 -sensor.
  • the exhaust gas sensor 16 provides a signal to the controller 15.
  • the signal provided by the common exhaust gas sensor 16 is not used by the controller 15 for a combustion adaption.
  • the signal provided by the common exhaust gas sensor 16 can be used for other functions of the controller like safety functions.
  • the signal provided by the common exhaust gas sensor 16 is used for an combustion adaption only at the gas burner being in the burner-on phase.
  • the signal provided by the common exhaust gas sensor 16 will be used for an combustion adaption at all gas burners of the combustion system 10.
  • a full adaption can be performed for the gas burner being in a burner-on phase while for the other gas burners being in a burner-off phase a preliminary adaption using the results of the full adaption can be performed.
  • the signal provided by the common exhaust gas sensor is not used for combustion adaption.
  • FIGS 3 and 4 both show a second embodiment of a combustion system 10 according to the present invention.
  • the combustion system 10 of Figures 3 and 4 differs from the combustion systems of Figures 1 and 2 only by the feature that in Figure 3 and 4 each boiler 13a, 13b, 13c is controlled by an individual controller 15a, 15b, 15c.
  • the controller 15a receives the signal from with the exhaust gas sensor 16 and acts as a master controller for the other controllers 15b, 15c.
  • the combustion system 10 of Figures 3 and 4 corresponds to the combustion systems of Figures 1 and 2 .
  • the signal provided by the common exhaust gas sensor 16 is used by the controllers 15a, 15c, 15c for a combustion adaption at least at the gas burner 11a or 11b or 11c being in the burner-on phase.
  • the signal provided by the common exhaust gas sensor 16 is not used by the controllers 15a, 15b, 15c for a combustion adaption.
  • FIG. 5 shows a third embodiment of a combustion system 20 according to the present invention.
  • the combustion system 20 of Figure 5 comprises a plurality of gas burners 21a, 21b positioned within a common combustion chamber 22 so that the combustion system 20 provides a single boiler 23 having several gas burners 21a, 21b positioned in the common combustion chamber 22.
  • the combustion system 20 further comprises a common exhaust pipe 24 for the plurality of gas burners 21a, 21b.
  • Each gas burner 21a, 21b of the boiler 23 communicates with the common exhaust pipe 24 in such a way that exhaust gas resulting from combustion of gas at the respective gas burners 21a, 21b is directed into the common exhaust pipe 24.
  • a valve 27a, 27b is assigned to each gas burner 21a, 21b.
  • the respective valve 27a, 27b is opened so that gas and air can be provided to the respective gas burner 21a, 21b by the respective fan 28a, 28b.
  • the respective valve 27a, 27b is closed preventing a back flow of exhaust gas from the common combustion camber 22 in the direction of the respective fan 28a, 28b of the respective gas burner 21a, 21b.
  • the combustion system 20 shown in Figure 5 further comprises controllers 25a, 25b for the gas burners 21a, 21b. Each controller 25a, 25b controls the respective gas burner 21a, 21b individually.
  • the two controllers 25a, 25b can be part of a single controller controlling both gas burners 21a, 21b.
  • a common exhaust gas sensor 26 is assigned to the common exhaust pipe 24.
  • the exhaust gas sensor 26 analyses the exhaust gas.
  • the exhaust gas sensor 26 can be a CO-sensor or COe-sensor or O2-sensor.
  • the exhaust gas sensor 26 provides a signal to the controllers 25a, 25b.
  • the signal provided by the common exhaust gas sensor 26 is not used for a combustion adaption.
  • the invention uses a system architecture for a cascade of parallel running gas burners using one exhaust gas sensor to provide combustion adaption.
  • the exhaust gas sensor is assigned to a common exhaust pipe of the gas burners. Only when a single gas burner is running, the signal provided by the common exhaust gas sensor is used for combustion adaption.
  • the invention allows a reduction of costs of such combustion systems.
  • the combustion adaption can be performed when only a single gas burner is in a burner-on phase. It is possible to passively wait for such an operation status of the combustion system. Alternatively, it is possible that the respective controller actively initiates such an operation status of the combustion system in defined time intervals or based on events trigged by an internal algorithm. The respective controller knows the state of other gas burners and ensures that other gas burners are not interfering with the gas burner performing optimization procedure, so that the valves are closed, no pre-purge or post-purge is running and there is sufficient timeout after these actions to guarantee no in-mix of air or other gases into the common exhaust pipe during the sensor signal of the common exhaust gas sensor is used for the combustion adaption.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Architecture (AREA)
  • Regulation And Control Of Combustion (AREA)

Claims (7)

  1. Verbrennungssystem (10), aufweisend eine Vielzahl von Gasbrennern (11a, 11b, 11c) und ein gemeinsames Abgasrohr (14) für die Vielzahl von Gasbrennern, wobei während Brenner-Ein-Phasen eines jeweiligen Gasbrenners (11a, 11b, 11c) Gas durch denselben verbrannt wird, wodurch Abgas entsteht, das in das gemeinsame Abgasrohr (14) strömt, und wobei während Brenner-Aus-Phasen eines jeweiligen Gasbrenners (11a) kein Gas durch denselben verbrannt wird,
    wobei jeder Gasbrenner (11a, 11b, 11c) in einem einzelnen Brennraum (12a, 12b, 12c) so positioniert ist, dass das Verbrennungssystem (10) eine Vielzahl von Kesseln (13a, 13b, 13c) bereitstellt,
    wobei jeder Gasbrenner (11a, 11b, 11c) und dadurch jeder Kessel (13a, 13b, 13c) in der Brenner-Ein-Phase des jeweiligen Gasbrenners das Abgas in das gemeinsame Abgasrohr (14) leitet,
    wobei das Verbrennungssystem ferner Folgendes aufweist:
    ein jedem Kessel (13a, 13b, 13c) zugeordnetes Ventil (17a, 17b, 17c), so dass in einer Brenner-Aus-Phase des jeweiligen Gasbrenners (11a, 11b, 11c) der Brennraum (12a, 12b, 12c) des jeweiligen Kessels (13a, 13b, 13c) von dem gemeinsamen Abgasrohr (14) getrennt werden kann, indem das jeweilige Ventil (17a, 17b, 17c) geschlossen wird, und eine jedem Gasbrenner (11a, 11b, 11c) zugeordnete Steuerung (15a, 15b, 15c),
    dadurch gekennzeichnet, dass
    dem gemeinsamen Abgasrohr (14) ein gemeinsamer Abgassensor (16) zugeordnet ist,
    in einem Betriebszustand des Verbrennungssystems (10), in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern (11a, 11b, 11c) in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, die Steuerung (15a, 15b, 15c) des Gasbrenners, der sich in der Brenner-Ein-Phase befindet, dazu ausgestaltet ist, das von dem gemeinsamen Abgassensor (16) bereitgestellte Signal für eine Verbrennungsanpassung zu nutzen.
  2. Verbrennungssystem, aufweisend eine Vielzahl von Gasbrennern (21a, 21b) und ein gemeinsames Abgasrohr (24) für die Vielzahl von Gasbrennern, wobei während Brenner-Ein-Phasen eines jeweiligen Gasbrenners (21a, 21b) Gas durch denselben verbrannt wird, wodurch Abgas entsteht, das in das gemeinsame Abgasrohr (24) strömt, und wobei während Brenner-Aus-Phasen eines jeweiligen Gasbrenners (21a, 21b) kein Gas durch denselben verbrannt wird,
    wobei die Gasbrenner (21a, 21b) so in einem gemeinsamen Brennraum (22) positioniert sind, dass das Verbrennungssystem (20) einen einzelnen Kessel (23) bereitstellt, der mehrere Gasbrenner (21a, 21b) aufweist,
    wobei jedem Gasbrenner (21a, 21b) ein Ventil (27a, 27b) zugeordnet ist, so dass in einer Brenner-Aus-Phase des jeweiligen Gasbrenners (21a, 21b) das dem jeweiligen Gasbrenner (21a, 21b) zugeordnete Ventil (27a, 27b) geschlossen werden kann,
    wobei dem gemeinsamen Abgasrohr (24) ein gemeinsamer Abgassensor (26) zugeordnet ist,
    gekennzeichnet durch
    eine Vielzahl von Steuerungen (25a, 25b), um die Gasbrenner (21a, 21b) zu steuern,
    wobei die jeweilige Steuerung (25a, 25b) auf eine solche Weise ausgestaltet ist, dass das dem jeweiligen Gasbrenner (21a, 21b) zugeordnete Ventil (27a, 27b) geschlossen werden kann, wodurch ein Zurückströmen von Abgas über den jeweiligen Gasbrenner (21a, 21b) verhindert wird,
    wobei die jeweilige Steuerung (25a, 25b) auf eine solche Weise ausgestaltet ist, dass in einem Betriebszustand des Verbrennungssystems (20), in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern (21a, 21b) in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von dem gemeinsamen Abgassensor (26) bereitgestellte Signal zumindest an dem Gasbrenner, der sich in der Brenner-Ein-Phase befindet, für eine Verbrennungsanpassung genutzt wird.
  3. Verbrennungssystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in einem Betriebszustand des Verbrennungssystems, in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von dem gemeinsamen Abgassensor bereitgestellte Signal nur an dem Gasbrenner, der sich in der Brenner-Ein-Phase befindet, für eine Verbrennungsanpassung genutzt wird.
  4. Verbrennungssystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in einem Betriebszustand des Verbrennungssystems, in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von dem gemeinsamen Abgassensor bereitgestellte Signal an allen Gasbrennern des Verbrennungssystems für eine Verbrennungsanpassung genutzt wird.
  5. Verfahren zum Betrieb eines Verbrennungssystems (10; 20) nach einem der Ansprüche 1 bis 4, wobei in einem Betriebszustand des Verbrennungssystems (10; 20), in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern (11a, 11b, 11c; 21a, 21b) in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von einem dem gemeinsamen Abgasrohr (14; 24) zugeordneten gemeinsamen Abgassensor (16; 26) bereitgestellte Signal zumindest an dem Gasbrenner, der sich in der Brenner-Ein-Phase befindet, für eine Verbrennungsanpassung genutzt wird.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass in einem Betriebszustand des Verbrennungssystems (10; 20), in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern (11a, 11b, 11c; 21a, 21b) in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von dem gemeinsamen Abgassensor (16; 26) bereitgestellte Signal nur an dem Gasbrenner, der sich in der Brenner-Ein-Phase befindet, für eine Verbrennungsanpassung genutzt wird.
  7. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass in einem Betriebszustand des Verbrennungssystems (10; 20), in dem sich nur ein einzelner Gasbrenner aus der Vielzahl von Gasbrennern (11a, 11b, 11c; 21a, 21b) in einer Brenner-Ein-Phase befindet, während sich alle anderen Gasbrenner in einer Brenner-Aus-Phase befinden, das von dem gemeinsamen Abgassensor (16; 26) bereitgestellte Signal an allen Gasbrennern des Verbrennungssystems für eine Verbrennungsanpassung genutzt wird.
EP14180981.4A 2014-08-14 2014-08-14 Verbrennungssystem und Verfahren zum Betrieb davon Active EP2985529B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018006493A1 (de) * 2018-08-17 2020-02-20 Truma Gerätetechnik GmbH & Co. KG Anordnung mit zwei Brennern
JP2020030016A (ja) * 2018-08-24 2020-02-27 株式会社ノーリツ 燃焼装置

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Publication number Priority date Publication date Assignee Title
NL6610804A (de) * 1966-04-07 1968-02-02
KR101000724B1 (ko) * 2008-05-20 2010-12-14 주식회사 경동네트웍 배기가스 역류를 방지하기 위한 멀티보일러 및 그 제어방법
DE102010044762A1 (de) 2010-09-08 2012-03-08 Honeywell Technologies S.A.R.L. Vorrichtung zur Kalibrierung einer Gasbrennerregelung
DE102010054807B4 (de) 2010-12-16 2015-07-02 Honeywell Technologies Sarl Verfahren zum Betreiben einer Gasbrennervorrichtung
JP5742553B2 (ja) * 2011-07-28 2015-07-01 株式会社ノーリツ 燃焼装置

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