EP0014611A1 - Installation for recuperating heat from the flue gases of a thermal combustion generator for ensuring the functioning of the generator in emergencies - Google Patents

Installation for recuperating heat from the flue gases of a thermal combustion generator for ensuring the functioning of the generator in emergencies Download PDF

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Publication number
EP0014611A1
EP0014611A1 EP80400073A EP80400073A EP0014611A1 EP 0014611 A1 EP0014611 A1 EP 0014611A1 EP 80400073 A EP80400073 A EP 80400073A EP 80400073 A EP80400073 A EP 80400073A EP 0014611 A1 EP0014611 A1 EP 0014611A1
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Prior art keywords
installation
boiler
supply
generator
turbine
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EP80400073A
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German (de)
French (fr)
Inventor
Edmond Girard
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Messier SA
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Messier SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F01K3/185—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters using waste heat from outside the plant

Definitions

  • the invention relates to an installation for recovering heat energy from the fumes of a combustion thermal generator, to ensure emergency operation of the generator, by means of a low temperature steam engine.
  • the most common installations comprising a combustion thermal generator, such as thermal treatment or cooking installations equipped with a combustion oven, household waste incineration plants equipped with an incinerator, or even heating installations equipped with a boiler in which the combustion of a fuel heats a fluid, for example water, circulating in a balloon contained in the boiler and flowing from there to radiators arranged in the premises to have the disadvantage that their operation is interrupted in the event of a failure in the supply of the various equipment which must consume energy to ensure the operation of the installation, such as fuel pump, burner, circulation pump or accelerator, as well as a draft fan, which are most often supplied directly from the electrical distribution network.
  • a combustion thermal generator such as thermal treatment or cooking installations equipped with a combustion oven, household waste incineration plants equipped with an incinerator, or even heating installations equipped with a boiler in which the combustion of a fuel heats a fluid, for example water, circulating in a balloon contained in the boiler and flowing from there to radiators arranged in the premises to have the disadvantage that their operation is interrupted in the event of
  • an installation according to one of the well-known types presented above the thermal generator of which is provided with a burner, and the fuel supply of which is ensured by a loading or supply device, and which also includes an airisi draft fan that a heat recovery exchanger arranged in the flue gas and combustion gas evacuation duct of the heat generator, is characterized in that the heat exchanger contains a boiler of working fluid of a low temperature steam engine to which it transmits heat energy collected in the smoke to drive a turbine, the output shaft of which delivers mechanical energy available to supply the loading or supply device, the burner and the fan in the event of interruption of the supply from the electrical distribution network.
  • the combustion thermal generator of an installation according to the invention can be a combustion furnace of a cooking or thermal treatment installation, or even an incinerator of an incineration installation, for example of household waste, but in a particular application case, the combustion thermal generator and the loading or supply device are respectively a boiler and its supply pump for a water heating installation heated in a tank placed in the boiler and supplying radiators thanks to an accelerator also driven, in normal condition from the electrical distribution network, and, in backup, from the available energy on the turbine output shaft.
  • the exchanger is crossed by the pipe of the hot water circuit coming from the tank located in the boiler, and an accumulator is preferably provided to supply, by means of two independent circuits, on the one hand, a pump of circulation of the steam engine as well as the accelerator of the hot water circuit, and, on the other hand, the supply pump, the burner, the draft fan, as well as a cooling fan for the condenser of the steam engine, the second circuit being supplied only when the power delivered by the turbine is sufficient.
  • an alternator can be driven, either directly by the turbine shaft, or by means of a hydraulic motor powered by a pump itself driven by the turbine.
  • a rectifier block is interposed between, on the one hand, the alternator and the electrical distribution network, and, on the other hand, the accumulator.
  • this installation comprises, on the one hand, a low temperature steam engine, block 1, in a closed circuit, having as the working fluid a refrigerant, this steam engine, of a type known per se , comprising, connected in series one after the other, a boiler 2, a turbine 3 constituting the engine of the steam, a condenser 4 and a circulation pump 5, and, on the other hand, a heating installation of a type also known, comprising a boiler 7, provided with a burner supplied with fuel from a tank 6 by a feed pump 8, and enclosing a balloon 10 of water thus heated and circulating in radiators 15 thanks to an accelerator 14.
  • the exchanger 12 is also traversed by the outlet pipe of the hot water tank 10, which is connected, downstream of the exchanger 12 and of the accelerator 14, to the radiators 15, thus ensuring the heating of the premises, the outlet pipe of these radiators 15 going to close the loop of heating by returning to the hot water tank 10.
  • the electrical distribution network supplies the various organs consuming energy, in this case the circulation and supply pumps 5 and 8 , the accelerator 14, the burner 9 as well as the fans 13 and 19.
  • the pump 8 supplies fuel to the burner 9 of the boiler 7, the water in the tank 10 reaches its operating temperature and circulates at across the previously described circuit; the fumes released by the boiler 7 pass through the exchanger 12 and envelop the boiler 2 of the low temperature steam engine.
  • the heat energy collected by the boiler 2 vaporizes the working fluid which is then transmitted to the turbine 3 delivering mechanical energy, itself transformed into electrical energy by means of a alternator 16 delivering through a block rectifier 18, in an accumulator 17 storing this energy in order to be able to retransmit it possibly to the devices to be driven.
  • the boiler 7 of the installation may be in one of the following two situations: either at its normal operating speed, or at idle or even at standstill , if the various radiators 15 of the installation are hot enough to meet the heating needs. In both case, when the failure on the network occurs, the organs such as pumps 5 and 8, burner 9, accelerator 14 and fans 13 and 19, are no longer supplied.
  • the boiler 2 continues to receive a certain calorific energy, on the one hand, from the fumes of the combustion in progress, and, on the other hand, from the hot water pipe, sufficient to ensure the drive of the turbine 3, which transmits its energy to the alternator 16, which flows into the rectifier 18 and then into the accumulator 17, which, as a result, can replace the faulty distribution network to supply both circuits 20 and 21, all the bodies ensuring the continuity of the proper functioning of the installation.
  • the working fluid of the low-temperature steam engine receives in the boiler 2, heat energy from the hot water of the heating circuit. heating, which constitutes a reserve, and in particular that contained in the balloon. 10.
  • the turbine 3 is then driven, but at too low a speed for the power delivered to be sufficient to drive the entire installation. Since, moreover, driving the entire installation from the accumulator would exhaust the latter before the power delivered by the turbine is sufficient to continue restarting the installation, provision is made the accumulator only initially supplies the accelerator 14 and the circulation pump 5 through the circuit 20, so that the hot water in the heating circuit transfers as much energy as possible calorific to boiler 2, and that the rotation speed of the turbine 3 be increased.
  • the accumulator supplies simultaneously, by the two circuits 20 and 21, not only the accelerator 14 and the pump 5, but also the pump 8, the burner 9 and the fan 13 of the boiler as well as the fan 19 for cooling the air condenser 4 of the steam engine 1.
  • the installation is thus able to autonomously ensure its restart and its operation until the main supply by the network can again be ensured.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

By means of the exchanger (12), heat energy available in the smoke of the thermocombustion generator (7) is recovered in order to transmit it to the boiler (2) of a low-temperature steam engine (1), the motor fluid of which drives an engine (3) converting this heat energy into mechanical energy, itself converted into electrical, hydraulic or pneumatic energy by respective use of an alternator (16), a pump or a compressor, thus making it possible to provide an emergency supply for the various members driving the thermal generator (7) and requiring energy consumption for their proper operation in the event of a breakdown or failure of their main supply. The invention is used in installations equipped with boilers, furnaces or incinerators.

Description

L'invention concerne une installation de récupération d'énergie calorifique des fumées d'un générateur thermique à combustion, pour assurer le fonctionnement en secours du générateur, au moyen d'une machine à vapeur à basse température.The invention relates to an installation for recovering heat energy from the fumes of a combustion thermal generator, to ensure emergency operation of the generator, by means of a low temperature steam engine.

Les installations les plus courantes comprenant un générateur thermique à combustion, telles que les installations de traitement thermique ou de cuisson équipées d'un four de combustion, les usines d'incinération des ordures ménagères équipées d'un incinérateur, ou encore les installations de chauffage équipées d'une chaudière dans laquelle la combustion d'un carburant assure le chauffage d'un fluide, par exemple de l'eau, circulant dans un ballon contenu dans la chaudière et s'écoulant de là vers des radiateurs disposés dans les locaux à chauffer, présentent comme inconvénient que leur fonctionnement est interrompu en cas de panne dans l'alimentation des divers équipements devant consommer de l'énergie pour assurer le fonctionnement de l'installation, tels que pompe de carburant, brûleur, pompe de circulation ou accélérateur, ainsi que ventilateur de tirage, lesquels sont le plus souvent alimentés directement à partir du réseau électrique de distribution.The most common installations comprising a combustion thermal generator, such as thermal treatment or cooking installations equipped with a combustion oven, household waste incineration plants equipped with an incinerator, or even heating installations equipped with a boiler in which the combustion of a fuel heats a fluid, for example water, circulating in a balloon contained in the boiler and flowing from there to radiators arranged in the premises to have the disadvantage that their operation is interrupted in the event of a failure in the supply of the various equipment which must consume energy to ensure the operation of the installation, such as fuel pump, burner, circulation pump or accelerator, as well as a draft fan, which are most often supplied directly from the electrical distribution network.

Par la présente invention, on se propose de remédier à cet inconvénient, par l'application d'une machine à vapeur basse température, d'un type connu en soi, à la récupération d'énergie calorifique des fumées du générateur thermique à combustion d'une telle installation, pour assurer le fonctionnement en secours de cette dernière, selon un régime autonome.By the present invention, it is proposed to remedy this drawback, by the application of a low temperature steam engine, of a type known per se, to the recovery of heat energy from the flue gases of the thermal combustion generator d 'such a installation, to ensure emergency operation of the latter, according to an autonomous regime.

A cet effet, une installation selon l'un des types bien connus présentés ci-dessus, dont le générateur thermique est muni d'un brûleur, et dont l'alimentation en carburant est assurée par un dispositif de chargement ou d'alimentation, et qui comprend également un ventilateur de tirage airisi qu'un échangeur de récupération calorifique disposés dans le conduit d'évacuation des fumées et gaz de combustion du générateur thermique, se caractérise en ce que l'échangeur thermique renferme un bouilleur de fluide moteur d'une machine à vapeur basse température auquel il transmet de l'énergie calorifique recueillie dans les fumées pour entraîner une turbine dont l'arbre de sortie délivre une énergie mécanique disponible pour alimenter en secours le dispositif de chargement ou d'alimentation, le brûleur et le ventilateur en cas d'interruption de l'alimentation à partir du réseau électrique de distribution. Le générateur thermique à combustion d'une installation selon l'invention peut être-un four à combustion d'une installation de cuisson ou de traitement thermique, ou encore un incinérateur d'une installation d'incinération par exemple d'ordures ménagères, mais dans un cas particulier d'application, le générateur thermique à combustion et le dispositif de chargement ou d'alimentation sont respectivement une chaudière et sa pompe d'alimentation d'une installation de chauffage à eau chauffée dans un ballon disposé dans la chaudière et alimentant des radiateurs grâce à un accélérateur également entraîné, en condition normale à partir du réseau électrique de distribution, et, en secours, à partir de l'énergie disponible sur l'arbre de sortie de la turbine.To this end, an installation according to one of the well-known types presented above, the thermal generator of which is provided with a burner, and the fuel supply of which is ensured by a loading or supply device, and which also includes an airisi draft fan that a heat recovery exchanger arranged in the flue gas and combustion gas evacuation duct of the heat generator, is characterized in that the heat exchanger contains a boiler of working fluid of a low temperature steam engine to which it transmits heat energy collected in the smoke to drive a turbine, the output shaft of which delivers mechanical energy available to supply the loading or supply device, the burner and the fan in the event of interruption of the supply from the electrical distribution network. The combustion thermal generator of an installation according to the invention can be a combustion furnace of a cooking or thermal treatment installation, or even an incinerator of an incineration installation, for example of household waste, but in a particular application case, the combustion thermal generator and the loading or supply device are respectively a boiler and its supply pump for a water heating installation heated in a tank placed in the boiler and supplying radiators thanks to an accelerator also driven, in normal condition from the electrical distribution network, and, in backup, from the available energy on the turbine output shaft.

De plus, l'échangeur est traversé par la conduite du circuit d'eau chaude provenant du ballon situé dans la chaudière, et un accumulateur est de préférence prévu pour alimenter, au moyen de deux circuits indépendants, d'une part, une pompe de circulation de la machine à vapeur ainsi que l'accélérateur du circuit d'eau chaude, et, d'autre part, la pompe d'alimentation, le brûleur, le ventilateur de tirage, ainsi qu'un ventilateur de refroidissement du condenseur de la machine à vapeur, le deuxième circuit n'étant alimenté que lorsque la puissance délivrée par la turbine est suffisante.In addition, the exchanger is crossed by the pipe of the hot water circuit coming from the tank located in the boiler, and an accumulator is preferably provided to supply, by means of two independent circuits, on the one hand, a pump of circulation of the steam engine as well as the accelerator of the hot water circuit, and, on the other hand, the supply pump, the burner, the draft fan, as well as a cooling fan for the condenser of the steam engine, the second circuit being supplied only when the power delivered by the turbine is sufficient.

Si l'on désire que l'alimentation en secours soit électrique, on peut entraîner un alternateur, soit directement par l'arbre de la turbine, soit par l'intermédiaire d'un moteur hydraulique alimenté par une pompe elle-même entraînée par la turbine.If it is desired that the emergency power supply be electric, an alternator can be driven, either directly by the turbine shaft, or by means of a hydraulic motor powered by a pump itself driven by the turbine.

Dans le cas d'une telle alimentation de secours électrique, un bloc redresseur est interposé entre, d'une part, l'alternateur et le réseau électrique de distribution, et, d'autre part, l'accumulateur. L'invention sera mieux comprise à l'aide d'un exemple particulier de réalisation qui sera décrit, à titre non limitatif, en référence à la figure unique, représentant schématiquement une installation de chauffage.In the case of such an emergency power supply, a rectifier block is interposed between, on the one hand, the alternator and the electrical distribution network, and, on the other hand, the accumulator. The invention will be better understood using a particular embodiment which will be described, without limitation, with reference to the single figure, schematically representing a heating installation.

En référence à la figure unique, cette installation comprend, d'une part, une machine à vapeur basse température, bloc 1, en circuit fermé, ayant comme fluide moteur un fluide frigorigène, cette machine à vapeur, d'un type en soi connu, comportant, montés en série à la suite l'un de l'autre, un bouilleur 2, une turbine 3 constituant le moteur de la machine à vapeur, un condenseur 4 et une pompe de circulation 5, et, d'autre part, une installation de chauffage d'un type également connu, comprenant une chaudière 7, munie d'un brûleur alimenté en carburant à partir d'une cuve 6 par une pompe d'alimentation 8, et renfermant un ballon 10 d'eau ainsi réchauffée et circulant dans des radiateurs 15 grâce à un accélérateur 14.With reference to the single figure, this installation comprises, on the one hand, a low temperature steam engine, block 1, in a closed circuit, having as the working fluid a refrigerant, this steam engine, of a type known per se , comprising, connected in series one after the other, a boiler 2, a turbine 3 constituting the engine of the steam, a condenser 4 and a circulation pump 5, and, on the other hand, a heating installation of a type also known, comprising a boiler 7, provided with a burner supplied with fuel from a tank 6 by a feed pump 8, and enclosing a balloon 10 of water thus heated and circulating in radiators 15 thanks to an accelerator 14.

Les fumées et gaz chauds résultant de la combustion à l'intérieur de la chaudière et qualifiés ci-après par le terme général de fumées, sont évacués par une cheminée 11 dans laquelle est disposé un échangeur 12 de récupération de l'énergie calorifique de ces fumées, contenant lui-même le bouilleur 2 de la machine à vapeur basse température, les fumées étant ensuite aspirées par un ventilateur de tirage 13 placé à l'intérieur de la cheminée 11. L'échangeur 12 est également traversé par la conduite de sortie du ballon d'eau chaude 10, laquelle est reliée, en aval de l'échangeur 12 et de l'accélérateur 14, aux radiateurs 15, assurant ainsi le chauffage des locaux, la conduite de sortie de ces radiateurs 15 allant fermer la boucle de chauffage en retournant au ballon d'eau chaude 10.The hot fumes and gases resulting from the combustion inside the boiler and described below by the general term of fumes, are evacuated by a chimney 11 in which is arranged an exchanger 12 for recovering the heat energy of these flue gases, itself containing the boiler 2 of the low temperature steam engine, the fumes then being sucked in by a draft fan 13 placed inside the chimney 11. The exchanger 12 is also traversed by the outlet pipe of the hot water tank 10, which is connected, downstream of the exchanger 12 and of the accelerator 14, to the radiators 15, thus ensuring the heating of the premises, the outlet pipe of these radiators 15 going to close the loop of heating by returning to the hot water tank 10.

Un alternateur 16, entraîné par l'arbre de sortie de la turbine 3, et transformant donc l'énergie mécanique produite par cette turbine 3 en énergie électrique, est relié à un bloc redresseur de courant 18 également connecté au réseau électrique de distribution ; ce bloc redresseur 18 alimente en courant continu un accumulateur 17 qui va stocker une certaine quantité d'énergie tout en alimentant par les deux circuits 20 et 21 indépendants respectivement l'accélérateur 14 et la pompe de circulation d'une part, et, d'autre part, le brûleur 9, la pompe d'alimentation 8, le ventilateur de tirage 13 ainsi qu'un second ventilateur 19 refroidissant le condenseur 4 de la machine à vapeur basse température, de type condenseur aérien.An alternator 16, driven by the output shaft of the turbine 3, and therefore transforming the mechanical energy produced by this turbine 3 into electrical energy, is connected to a current rectifier block 18 also connected to the electrical distribution network; this rectifier block 18 supplies direct current to an accumulator 17 which will store a certain amount of energy while supplying by the two independent circuits 20 and 21 respectively the accelerator 14 and the circulation pump on the one hand, and, on the other hand, the burner 9, the feed pump 8, the draft fan 13 as well as a second fan 19 cooling the condenser 4 of the low temperature steam engine, of condenser type air.

En conditicn normale d'utilisation, le fonctionnement de l'installation se déroule de la façon suivante : le réseau électrique de distribution alimente les divers organes consommant de l'énergie, en l'occurence les pompes de circulation et d'alimentation 5 et 8, l'accélérateur 14, le brûleur 9 ainsi que les ventilateurs 13 et 19. De ce fait, la pompe 8 alimente en carburant le brûleur 9 de la chaudière 7, l'eau du ballon 10 atteint sa température d'utilisation et circule au travers du circuit précédemment décrit ; les fumées dégagées par la chaudière 7 traversent l'échangeur 12 et enveloppent le bouilleur 2 de la machine à vapeur basse température. L'énergie calorifique recueillie par le bouilleur 2 vaporise le fluide moteur qui est ensuite transmis à la turbine 3 délivrant de l'énergie mécanique, elle-même transformée en énergie électrique au moyen d'un alternateur 16 débitant, au travers d'un bloc redresseur 18, dans un accumulateur 17 emmagasinant cette énergie pour pouvoir la retransmettre éventuellement aux appareils à entraîner.Under normal conditions of use, the operation of the installation proceeds as follows: the electrical distribution network supplies the various organs consuming energy, in this case the circulation and supply pumps 5 and 8 , the accelerator 14, the burner 9 as well as the fans 13 and 19. As a result, the pump 8 supplies fuel to the burner 9 of the boiler 7, the water in the tank 10 reaches its operating temperature and circulates at across the previously described circuit; the fumes released by the boiler 7 pass through the exchanger 12 and envelop the boiler 2 of the low temperature steam engine. The heat energy collected by the boiler 2 vaporizes the working fluid which is then transmitted to the turbine 3 delivering mechanical energy, itself transformed into electrical energy by means of a alternator 16 delivering through a block rectifier 18, in an accumulator 17 storing this energy in order to be able to retransmit it possibly to the devices to be driven.

En cas de panne de l'alimentation principale par le réseau, la chaudière 7 de l'installation peut se trouver dans l'une des deux situations suivantes : soit à son régime normal d'utilisation, soit au ralenti ou même à l'arrêt, si les divers radiateurs 15 de l'installation sont suffisamment chauds pour satisfaire aux besoins de chauffage. Dans les deux cas, lorsque la panne sur le réseau intervient, les organes tels que pompes 5 et 8, brûleur 9, accélérateur 14 et ventilateurs 13 et 19, ne sont plus alimentés. Cependant, dans le premier cas, le bouilleur 2 continue de recevoir une certaine énergie calorifique, d'une part, des fumées de la combustion en cours, et, d'autre part, de la conduite d'eau chaude, suffisante pour assurer l'entraînement de la turbine 3, laquelle transmet son énergie à l'alternateur 16, qui débite dans le redresseur 18 puis dans l'accumulateur 17, qui, de ce fait, peut se substituer au réseau de distribution défaillant pour alimenter, par les deux circuits 20 et 21, tous les organes assurant la continuité du bon fonctionnement de l'installation. Dans le second cas, en l'absence d'une combustion suffisamment importante dans la chaudière 7, le fluide moteur de la machine à vapeur basse température reçoit dans le bouilleur 2, de l'énergie calorifique provenant de l'eau chaude du circuit de chauffage, qui constitue une réserve, et notamment de celle contenue dans le ballon.10. La turbine 3 est alors entraînée, mais à un régime trop faible pour que la puissance délivrée soit suffisante à l'entraînement de l'ensemble de l'installation. Comme, de plus, l'entraînement de l'ensemble de l'installation à partir de l'accumulateur épuiserait ce dernier avant que la puissance délivrée par la turbine ne soit suffisante pour continuer la remise en route de l'installation, il est prévu que l'accumulateur n'assure dans un premier temps que l'alimentation de l'accélérateur 14 et de la pompe de circulation 5 par le circuit 20, de sorte que l'eau chaude du circuit de chauffage transfère le plus possible d'énergie calorifique au bouilleur 2, et que le régime de rotation de la turbine 3 soit augmenté. Au-delà d'un certain seuil, correspondant à une énergie délivrée suffisante pour entraîner l'ensemble de l'installation, l'accumulateur alimente simultanément, par les deux circuits 20 et 21, non seulement l'accélérateur 14 et la pompe 5, mais aussi la pompe 8, le brûleur 9 et le ventilateur 13 de la chaudière ainsi que le ventilateur 19 de refroidissement du condenseur aérien 4 de la machine à vapeur 1.In the event of a failure of the main supply by the network, the boiler 7 of the installation may be in one of the following two situations: either at its normal operating speed, or at idle or even at standstill , if the various radiators 15 of the installation are hot enough to meet the heating needs. In both case, when the failure on the network occurs, the organs such as pumps 5 and 8, burner 9, accelerator 14 and fans 13 and 19, are no longer supplied. However, in the first case, the boiler 2 continues to receive a certain calorific energy, on the one hand, from the fumes of the combustion in progress, and, on the other hand, from the hot water pipe, sufficient to ensure the drive of the turbine 3, which transmits its energy to the alternator 16, which flows into the rectifier 18 and then into the accumulator 17, which, as a result, can replace the faulty distribution network to supply both circuits 20 and 21, all the bodies ensuring the continuity of the proper functioning of the installation. In the second case, in the absence of sufficient combustion in the boiler 7, the working fluid of the low-temperature steam engine receives in the boiler 2, heat energy from the hot water of the heating circuit. heating, which constitutes a reserve, and in particular that contained in the balloon. 10. The turbine 3 is then driven, but at too low a speed for the power delivered to be sufficient to drive the entire installation. Since, moreover, driving the entire installation from the accumulator would exhaust the latter before the power delivered by the turbine is sufficient to continue restarting the installation, provision is made the accumulator only initially supplies the accelerator 14 and the circulation pump 5 through the circuit 20, so that the hot water in the heating circuit transfers as much energy as possible calorific to boiler 2, and that the rotation speed of the turbine 3 be increased. Beyond a certain threshold, corresponding to an energy delivered sufficient to drive the entire installation, the accumulator supplies simultaneously, by the two circuits 20 and 21, not only the accelerator 14 and the pump 5, but also the pump 8, the burner 9 and the fan 13 of the boiler as well as the fan 19 for cooling the air condenser 4 of the steam engine 1.

L'installation est ainsi en mesure d'assurer de façon autonome sa remise en route et son fonctionnement jusqu'à ce que l'alimentation principale par le réseau puisse à nouveau être assurée.The installation is thus able to autonomously ensure its restart and its operation until the main supply by the network can again be ensured.

Claims (7)

1/ Installation comprenant un générateur thermique à combustion, muni d'un brûleur (9) et alimenté en carburant par un dispositif de chargement ou d'alimentation, ainsi qu'un échangeur thermique (12) et un ventilateur (13), disposés dans un conduit d'évacuation des fumées (11), le dispositif de chargement ou d'alimentation, le brûleur (9) et le ventilateur (13) étant entraînés en condition normale à partir du réseau électrique de distribution, caractérisée en ce que l'échangeur thermique (12) renferme un houilleur (2) de fluide moteur d'une machine à vapeur basse température (1) auquel il transmet de l'énergie calorifique recueillie dans les fumées pour entraîner une turbine (3) dont l'arbre de sortie délivre une énergie mécanique disponible pour alimenter en secours le dispositif de chargement ou d'alimentation (8), le brûleur (9) et le ventilateur (13) en cas d'interruption de l'alimentation à partir du réseau électrique de distribution.1 / Installation comprising a combustion thermal generator, provided with a burner (9) and supplied with fuel by a loading or supply device, as well as a heat exchanger (12) and a fan (13), arranged in a smoke evacuation duct (11), the loading or supply device, the burner (9) and the fan (13) being driven in normal condition from the electrical distribution network, characterized in that the heat exchanger (12) contains a boiler (2) of working fluid of a low temperature steam engine (1) to which it transmits heat energy collected in the fumes to drive a turbine (3) whose output shaft delivers mechanical energy available to back up the loading or supply device (8), the burner (9) and the fan (13) in the event of interruption of the supply from the electrical distribution network. 2/ Installation selon la revendication 1, caractérisée en ce que le générateur thermique à combustion et le dispositif de chargement ou d'ali- mention sont respectivement une chaudière (7) et sa pompe d'alimentation (8) d'une installation de chauffage, à eau chauffée dans un ballon (10) disposé dans la chaudière (7) et alimentant des radiateurs (15) grâce à un accélérateur (14) également entraîné, en condition normale,à partir du réseau électrique de distribution, et, en secours, à partir de l'énergie disponible sur l'arbre de sortie de la turbine (3).2 / installation according to claim 1, characterized in that the combustion thermal generator and the loading or supply device are respectively a boiler (7) and its supply pump (8) of a heating installation , with water heated in a tank (10) arranged in the boiler (7) and supplying radiators (15) by means of an accelerator (14) also driven, in normal condition, from the electrical distribution network, and, in emergency , from the energy available on the turbine output shaft (3). 3/ Installation selon la revendication 2, caractérisée en ce que l'échangeur (12) est traversé par la conduite du circuit d'eau chaude provenant du ballon (10) situé dans la chaudière (7).3 / Installation according to claim 2, characterized in that the exchanger (12) is crossed by the pipe of the hot water circuit coming from the tank (10) located in the boiler (7). 4/ Installation selon les revendications 2 et 3, caractérisée en ce qu'un accumulateur (17) alimente, au moyen de deux circuits indépendants (20,21), d'une part, la pompe de circulation (5) de la machine à vapeur (1) ainsi que l'accélérateur (14) du circuit d'eau chaude et, d'autre part, la pompe d'alimentation (8), le brûleur (9), le ventilateur de tirage (13), ainsi qu'un ventilateur de refroidissement (19) du condenseur (4) de la machine à vapeur (1), le deuxième circuit (21) n'étant alimenté que lorsque la puissance délivrée par la turbine (3) est suffisante.4 / Installation according to claims 2 and 3, characterized in that an accumulator (17) supplies, by means of two independent circuits (20,21), on the one hand, the circulation pump (5) of the machine steam (1) as well as the accelerator (14) of the hot water circuit and, on the other hand, the supply pump (8), the burner (9), the draft fan (13), as well as 'a cooling fan (19) of the condenser (4) of the steam engine (1), the second circuit (21) being supplied only when the power delivered by the turbine (3) is sufficient. 51 Installation selon l'une des revendications 2 à 4, caractérisée en ce qu'un alternateur (16), situé sur l'arbre de sortie de la turbine (3), assure l'alimentation électrique de l'installation.51 Installation according to one of claims 2 to 4, characterized in that an alternator (16), located on the output shaft of the turbine (3), ensures the electrical supply of the installation. 61 Installation selon la revendication 5, caractérisée en ce qu'un bloc redresseur de courant (18) est relié, d'une part, à l'alternateur (16) et au réseau électrique de distribution, et, d'autre part, à l'accumulateur (17).61 Installation according to claim 5, characterized in that a current rectifier block (18) is connected, on the one hand, to the alternator (16) and to the electrical distribution network, and, on the other hand, to the accumulator (17). 7/ Installation selon la revendication 1, caractérisée en ce que le générateur thermique à combustion est un four à combustion ou un incinérateur.7 / Installation according to claim 1, characterized in that the combustion thermal generator is a combustion furnace or an incinerator.
EP80400073A 1979-01-31 1980-01-17 Installation for recuperating heat from the flue gases of a thermal combustion generator for ensuring the functioning of the generator in emergencies Withdrawn EP0014611A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7902482 1979-01-31
FR7902482A FR2448039A1 (en) 1979-01-31 1979-01-31 APPLICATION OF A LOW TEMPERATURE STEAM MACHINE TO THE RECOVERY OF CALORIFIC ENERGY FROM THE FUMES OF A COMBUSTION THERMAL GENERATOR TO ENSURE THE RELIEF OPERATION OF THE GENERATOR, AND INSTALLATION THUS OBTAINED

Publications (1)

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EP0014611A1 true EP0014611A1 (en) 1980-08-20

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EP80400073A Withdrawn EP0014611A1 (en) 1979-01-31 1980-01-17 Installation for recuperating heat from the flue gases of a thermal combustion generator for ensuring the functioning of the generator in emergencies

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EP (1) EP0014611A1 (en)
BR (1) BR8000363A (en)
FR (1) FR2448039A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499622A1 (en) * 1981-02-11 1982-08-13 Clesid Sa Converter off-gas heat recovery installation - includes steam turbine for driving off-gas withdrawal fan

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567404A (en) * 1942-06-11 1945-02-13 Oerlikon Maschf Improvements in or relating to turbine power plant
CH460815A (en) * 1966-04-29 1968-08-15 Basf Ag Process and device for utilizing heat from industrial plants and application of the process
FR1537390A (en) * 1966-09-29 1968-08-23 Ass Elect Ind Steam turbine starting device in a gas turbine installation
US3945210A (en) * 1974-06-07 1976-03-23 Rodina Energy R & D Corporation Energy recovery
FR2359383A1 (en) * 1976-07-21 1978-02-17 Messier Fa Utilisation of waste heat from steam plant - uses exhaust steam to drive vapour cycle machine delivering to condenser with heat exchanger supplying central heating system radiator
GB1509040A (en) * 1975-12-24 1978-04-26 Tsung Hsien Kuo Generating power
GB1530126A (en) * 1975-12-22 1978-10-25 Oxley A Methods of and means for the storage of surplus energy

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB567404A (en) * 1942-06-11 1945-02-13 Oerlikon Maschf Improvements in or relating to turbine power plant
CH460815A (en) * 1966-04-29 1968-08-15 Basf Ag Process and device for utilizing heat from industrial plants and application of the process
FR1537390A (en) * 1966-09-29 1968-08-23 Ass Elect Ind Steam turbine starting device in a gas turbine installation
US3945210A (en) * 1974-06-07 1976-03-23 Rodina Energy R & D Corporation Energy recovery
GB1530126A (en) * 1975-12-22 1978-10-25 Oxley A Methods of and means for the storage of surplus energy
GB1509040A (en) * 1975-12-24 1978-04-26 Tsung Hsien Kuo Generating power
FR2359383A1 (en) * 1976-07-21 1978-02-17 Messier Fa Utilisation of waste heat from steam plant - uses exhaust steam to drive vapour cycle machine delivering to condenser with heat exchanger supplying central heating system radiator

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Publication number Publication date
BR8000363A (en) 1980-09-30
FR2448039A1 (en) 1980-08-29

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