EP2985529B1 - Système de combustion et son procédé de fonctionnement - Google Patents

Système de combustion et son procédé de fonctionnement 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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EP14180981.4A
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German (de)
English (en)
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EP2985529A1 (fr
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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Priority to EP14180981.4A priority Critical patent/EP2985529B1/fr
Publication of EP2985529A1 publication Critical patent/EP2985529A1/fr
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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. Système de combustion (10) comprenant une pluralité de brûleurs à gaz (11a, 11b, 11c) et un tuyau d'échappement commun (14) à la pluralité de brûleurs à gaz, dans lequel pendant les phases d'allumage d'un brûleur à gaz respectif (11a, 11b, 11c), le gaz est brûlé par celui-ci, entraînant un gaz d'échappement qui circule dans le tuyau d'échappement commun (14), et dans lequel pendant les phases d'extinction d'un brûleur à gaz respectif (11a), aucun gaz n'est brûlé par celui-ci,
    dans lequel chaque brûleur à gaz (11a, 11b, 11c) est positionné à l'intérieur d'une chambre de combustion individuelle (12a, 12b, 12c) de sorte que le système de combustion (10) possède une pluralité de chaudières (13a, 13b, 13c),
    dans lequel chaque brûleur à gaz (11a, 11b, 11c) et donc chaque chaudière (13a, 13b, 13c) dirige, pendant la phase d'allumage du brûleur à gaz respectif, le gaz d'échappement dans le tuyau d'échappement commun (14) ;
    le système de combustion comprenant en outre une soupape (17a, 17b, 17c) attribuée à chaque chaudière (13a, 13b, 13c) de sorte que pendant une phase d'extinction du brûleur à gaz respectif (11a, 11b, 11c), la chambre de combustion (12a, 12b, 12c) de la chaudière respective (13a, 13b, 13c) peut être séparée du tuyau d'échappement commun (14) par fermeture de la soupape respective (17a, 17b, 17c), et un contrôleur (15a, 15b, 15c) attribué à chaque brûleur à gaz (11a, 11b, 11c),
    caractérisé en ce qu'un capteur de gaz d'échappement commun (16) est attribué au tuyau d'échappement commun (14),
    dans un état de fonctionnement du système de combustion (10) dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz (11a, 11b, 11c) est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le contrôleur (15a, 15b, 15c) du brûleur à gaz qui est dans la phase d'allumage est conçu pour utiliser le signal fourni par le capteur de gaz d'échappement commun (16) pour une adaptation de la combustion.
  2. Système de combustion comprenant une pluralité de brûleurs à gaz (21a, 21b) et un tuyau d'échappement commun (24) pour la pluralité de brûleurs à gaz, dans lequel pendant les phases d'allumage d'un brûleur à gaz respectif (21a, 21b), le gaz est brûlé par celui-ci, entraînant un gaz d'échappement qui circule dans le tuyau d'échappement commun (24), et dans lequel pendant les phases d'extinction d'un brûleur à gaz respectif (21a, 21b), aucun gaz n'est brûlé par celui-ci,
    dans lequel les brûleurs à gaz (21a, 21b) sont positionnés à l'intérieur d'une chambre de combustion commune (22) de sorte que le système de combustion (20) possède une seule chaudière (23) comportant plusieurs brûleurs à gaz (21a, 21b),
    dans lequel une soupape (27a, 27b) est attribuée à chaque brûleur à gaz (21a, 21b) de sorte que dans une phase d'extinction du brûleur à gaz respectif (21a, 21b), la soupape (27a, 27b) attribuée au brûleur à gaz respectif (21a, 21b) peut être fermée,
    dans lequel un capteur de gaz d'échappement commun (26) est attribué au tuyau d'échappement commun (24), caractérisé par
    une pluralité de contrôleurs (25a, 25b) destinés à commander les brûleurs à gaz (21a, 21b),
    dans lequel le contrôleur respectif (25a, 25b) est conçu de sorte que la soupape (27a, 27b) attribuée au brûleur à gaz respectif (21a, 21b) puisse être fermée, empêchant ainsi un retour du gaz d'échappement dans le brûleur à gaz respectif (21a, 21b),
    dans lequel le contrôleur respectif (25a, 25b) est conçu de sorte que dans un état de fonctionnement du système de combustion (20) dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz (21a, 21b) est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par le capteur de gaz d'échappement commun (26) est utilisé pour une adaptation de la combustion au moins dans le brûleur à gaz qui est dans la phase d'allumage.
  3. Système de combustion selon la revendication 1 ou 2, caractérisé en ce que dans un état de fonctionnement du système de combustion dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par le capteur de gaz d'échappement commun est utilisé pour une adaptation de la combustion uniquement dans le brûleur à gaz qui est dans la phase d'allumage.
  4. Système de combustion selon la revendication 1 ou 2, caractérisé en ce que dans un état de fonctionnement du système de combustion dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par le capteur de gaz d'échappement commun est utilisé pour une adaptation de la combustion dans tous les brûleurs à gaz du système de combustion.
  5. Procédé de fonctionnement d'un système de combustion (10 ; 20) selon l'une quelconque des revendications 1 à 4, dans lequel
    dans un état de fonctionnement du système de combustion (10 ; 20) dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz (11a, 11b, 11c ; 21a, 21b) est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par un capteur de gaz d'échappement commun (16 ; 26) attribué au tuyau d'échappement commun (14 ; 24) est utilisé pour une adaptation de la combustion au moins dans le brûleur à gaz qui est dans la phase d'allumage.
  6. Procédé selon la revendication 5, caractérisé en ce que dans un état de fonctionnement du système de combustion (10 ; 20) dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz (11a, 11b, 11c ; 21a, 21b) est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par le capteur de gaz d'échappement commun (16 ; 26) est utilisé pour une adaptation de la combustion uniquement dans le brûleur à gaz qui est dans la phase d'allumage.
  7. Procédé selon la revendication 5, caractérisé en ce que dans un état de fonctionnement du système de combustion (10 ; 20) dans lequel un seul brûleur à gaz de la pluralité de brûleurs à gaz (11a, 11b, 11c ; 21a, 21b) est dans une phase d'allumage tandis que tous les autres brûleurs à gaz sont dans une phase d'extinction, le signal fourni par le capteur de gaz d'échappement commun (16 ; 26) est utilisé pour une adaptation de la combustion dans tous les brûleurs à gaz du système de combustion.
EP14180981.4A 2014-08-14 2014-08-14 Système de combustion et son procédé de fonctionnement Active EP2985529B1 (fr)

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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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NL6610804A (fr) * 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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