EP0058356A1 - Element of a feed-water heater of a steam boiler and feed-water heater - Google Patents

Element of a feed-water heater of a steam boiler and feed-water heater Download PDF

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Publication number
EP0058356A1
EP0058356A1 EP82100845A EP82100845A EP0058356A1 EP 0058356 A1 EP0058356 A1 EP 0058356A1 EP 82100845 A EP82100845 A EP 82100845A EP 82100845 A EP82100845 A EP 82100845A EP 0058356 A1 EP0058356 A1 EP 0058356A1
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EP
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Prior art keywords
steam
tubes
bundle
section
water heater
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EP82100845A
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German (de)
French (fr)
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EP0058356B1 (en
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Bernard Andrieux
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Delas Weir SA
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Delas Weir SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
    • 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
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines

Definitions

  • the present invention relates to a feed water heater for a steam production boiler of an electrical energy production installation.
  • steam power plants include a steam condenser which receives and condenses the exhaust steam from the low pressure turbine and heaters placed on the boiler's feed water circuit, these being supplied by steam drawn from the turbine at different pressure levels.
  • the first low pressure cylindrical heaters are most often placed in the sleeve of the condenser which connects the exhaust pipes of the turbine to the body of the condenser which contains the tubular condensing bundle .
  • the heaters are installed horizontally inside the condenser sleeve and perpendicular to the axis of the turbine and are supplied with extracting steam by pipes directly connecting the turbine to said heaters, pipes which are also confined inside- of the cuff.
  • the shape of the heaters, generally cylindrical, and the arrangement of the withdrawal conduits supplying the heaters means that the assembly remains relatively bulky and does not allow good passage of the exhaust steam from the turbine to the tube bundle of the condenser, in particular because of the draw-off lines constituting obstacles on the passage of this vapor and therefore increase the pressure losses.
  • the object of the present invention is to overcome these drawbacks and relates to a feed water heater element for a steam production boiler of an electrical energy production installation comprising an alternator driven by a turbine comprising at least one low pressure body, said heater element consisting of a bundle of tubes and being located inside a cuff connecting said low pressure body to the con vapor denser located under this low pressure body, the tubes of said heater element being supplied with water from the condenser extraction circuit and the outer surface of the tubes being supplied with steam from a withdrawal of the low pressure body, the bundle of tube being substantially horizontal and perpendicular to the axis of the turbine, the bundle of tubes having a narrow and elongated section whose length is arranged substantially vertically, the bundle of tubes being enclosed in an envelope channeling the vapor around the bundle and receiving steam withdrawal pipes, characterized in that said envelope has, in the connection region of the steam supply pipes, one section of which one of the sides deviates progressively from the bottom to the top of the corresponding side of one of the two substantially vertical sides of the narrow
  • the supply of steam through the upper part of the envelope is carried out between said side of the envelope and the corresponding side of the narrow and elongated section of the tube bundle.
  • the invention also relates to a water heater characterized in that it comprises two separate water heater elements as above, placed at the same level and supplied with withdrawal steam of the same thermodynamic level at piping means from a pressure base body with central intake and two symmetrical exhausts.
  • the two said separate water heater elements are supplied with withdrawal steam of a first thermodynamic level, a second heater being located outside of said sleeve and being supplied with steam. withdrawal of a second thermodynamic level, by pipes passing between the two said elements.
  • the withdrawal pipes connect the said low pressure body on the upper face of said casing in a substantially rectilinear manner, and the section of the casing and tube bundle assembly is slightly inclined relative to the vertical so as to facilitate the flow of condensate on the side opposite to the steam supply.
  • the water heater element comprises a bundle 1 of tubes which, in the assembly described, are tubes bent in a U shape and therefore whose inlet 2 and outlet 3 , as seen in Figure 3 are located on the same side, and a water box 4 realizing the separation between the inlet 2 and the outlet 3.
  • the section of the bundle 1 of tubes is narrow and elongated, substantially rectangular, the greater length being placed vertically.
  • the tubes are supplied with water by the condenser extraction circuit and the outside wall of the tubes is supplied with withdrawal steam by withdrawal pipes.
  • the bundle 1 of tubes is enclosed in an envelope 6 which channels the vapor around the bundle of tubes. This envelope 6 does not have the same section over the entire length of the heater.
  • the latter In the region of the connection of the withdrawal pipes 5 with the casing, the latter has a section as shown by the reference 7 in FIG. 1, that is to say essentially such that one of the sides of the envelope, the one on the right in the figure, progressively departs from the bottom upwards, on the corresponding side of the section of the bundle 1 of tubes. Beyond the region of connection of the withdrawal pipes 5 with the casing 6, this has a section 8 which has the same shape, according to a slightly larger homothetic ratio than the cross-section of the tube bundle.
  • the admission of steam via the withdrawal pipes 5 takes place from above the part 7 of the envelope 6 between the sloping wall of this part 7 and the bundle 1 of tubes.
  • draw-off level S1 comprising two elements A and B similar to the element in FIG. 1. These elements A and B are supplied by draw-off pipes 5 coming from draw-offs similarly thermodynamic level S1. Each element A or B is supplied by two pipes 5 as shown in FIG. 4. These elements are arranged perpendicular to the axis 10 of the turbine.
  • the figures also show pipes 22 for drawing off a second thermodynamic level S2 passing between the elements A and B but in this case, these pipes lead to a heater (not shown) placed outside the sleeve 15.
  • the very shape of the bundle, narrow and elongated, leaves a large space for the passage of exhaust vapor, all the more so since the bulge of the envelope 6 at 7 exists only over a part only of the length of the bundle. Furthermore, the internal supply of the withdrawal steam heater is excellent without it being necessary to extend this bulge 7 over the entire length.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Elément de réchauffeur d'eau d'alimentation d'une chaudière de production de vapeur d'une installation de production d'énergie électrique comprenant un alternateur entraîné par une turbine comportant au moins un corps basse pression (9), ledit élément de réchauffeur (A) étant un élément de réchauffeur tubulaire situé à l'intérieur de la manchette (15) reliant ledit corps basse pression au condenseur (14) de vapeur situé sous ce corps basse pression, les tubes dudit élément de réchauffeurs étant alimentés en eau provenant du circuit d'extraction du condenseur, et la surface extérieure des tubes étant alimenté en vapeur provenant d'un soutirage du corps basse pression, le faisceau de tube étant sensiblement horizontal et perpendiculaire à l'axe (10) de la turbine, le faisceau (1) de tubes dudit élément ayant une section étroite et allongée dont la longueur est disposée sensiblement verticalement, le faisceau de tube étant enfermé dans une enveloppe (6) canalisant la vapeur autour du faisceau et reçevant les canalisations (5) de soutirage de vapeur, caracterisé en ce que ladite enveloppe a, dans la région des canalisations d'alimentation en vapeur de soutirage, une section (7) dont l'un des côtés s'écarte prgressivement en partant du base vers le haut du côté correspondant de l'un des deux côtés sensiblement verticaux de la section etroite et allongée dudit faisceau (1) de tubes, et au dela de cette region, une section qui suit avec un espace pour le passage de la vapeur, le profil du contour de la section du faisceau de tubes, l'alimentation en vapeur se faisant par le dessus de ladite enveloppe.Feed water heater element of a steam production boiler of an electrical energy production installation comprising an alternator driven by a turbine comprising at least one low pressure body (9), said heater element ( A) being a tubular heater element located inside the sleeve (15) connecting said low pressure body to the steam condenser (14) located under this low pressure body, the tubes of said heater element being supplied with water from the condenser extraction circuit, and the external surface of the tubes being supplied with steam coming from a withdrawal of the low pressure body, the tube bundle being substantially horizontal and perpendicular to the axis (10) of the turbine, the bundle ( 1) of tubes of said element having a narrow and elongated section whose length is arranged substantially vertically, the tube bundle being enclosed in an envelope (6) channeling the vapor around the beam and receiving the vapor withdrawal pipes (5), characterized in that said envelope has, in the region of the steam supply pipes, a section (7) one of the sides of which deviates gradually from starting from the base upwards on the corresponding side of one of the two substantially vertical sides of the narrow and elongated section of said bundle (1) of tubes, and beyond this region, a section which follows with space for the passage of the vapor, the profile of the contour of the section of the bundle of tubes, the vapor supply being made from above said envelope.

Description

La présente invention concerne un réchauffeur d'eau d'alimentation d'une chaudière de production de vapeur d'une installation de production d'énergie électrique.The present invention relates to a feed water heater for a steam production boiler of an electrical energy production installation.

On sait que les centrales électriques à vapeur comprennent un condenseur de vapeur qui reçoit et condense la vapeur d'échappement de la turbine basse pression et des réchauffeurs placés sur le circuit d'eau alimentaire de la chaudière, ceux-ci étant alimentés par de la vapeur soutirée à la turbine à différents niveaux de pression.It is known that steam power plants include a steam condenser which receives and condenses the exhaust steam from the low pressure turbine and heaters placed on the boiler's feed water circuit, these being supplied by steam drawn from the turbine at different pressure levels.

Afin de faciliter l'installation de la salle des machines, les premiers réchauffeurs basse pression de forme cylindrique sont, le plus souvent, disposés dans la manchette du condenseur qui relie les échappements de la turbine au corps du condenseur qui contient le faisceau tubulaire de condensation.In order to facilitate the installation of the engine room, the first low pressure cylindrical heaters are most often placed in the sleeve of the condenser which connects the exhaust pipes of the turbine to the body of the condenser which contains the tubular condensing bundle .

Les réchauffeurs sont installés horizontalement à l'intérieur de la manchette du condenseur et perpendiculairement à l'axe de la turbine et sont alimentés en vapeur de soutirage par des tuyauteries reliant directement la turbine auxdits réchauffeurs, tuyauteries qui sont également confinées à l'intérieur- de la manchette.The heaters are installed horizontally inside the condenser sleeve and perpendicular to the axis of the turbine and are supplied with extracting steam by pipes directly connecting the turbine to said heaters, pipes which are also confined inside- of the cuff.

Cependant, dans ces dispositions connues, la forme des réchauffeurs, généralement cylindriques, et la disposition des conduits de soutirage alimentant les réchauffeur font que l'ensemble reste relativement encombrant et ne permet pas un bon passage de la vapeur d'échappement de la turbine vers le faisceau tubulaire du condenseur à cause notamment des conduites de soutirage constituant des obstacles sur le passage de cette vapeur et augmentent donc les pertes de charge.However, in these known arrangements, the shape of the heaters, generally cylindrical, and the arrangement of the withdrawal conduits supplying the heaters means that the assembly remains relatively bulky and does not allow good passage of the exhaust steam from the turbine to the tube bundle of the condenser, in particular because of the draw-off lines constituting obstacles on the passage of this vapor and therefore increase the pressure losses.

La présente invention a pour but de pallier ces inconvénients et a pour objet un élément de réchauffeur d'eau d'alimentation d'une chaudière de production de vapeur d'une installation de production d'énergie électrique comprenant un alternateur entraîné par une turbine comportant au moins un corps basse pression, ledit élément de réchauffeur étant constitué d'un faisceau de tubes et étant situé à l'intérieur d'une manchette reliant ledit corps basse pression au condenseur de vapeur situé sous ce corps basse pression, les tubes dudit élément de réchauffeur étant alimentés en eau provenant du circuit d'extraction du condenseur et la surface extérieure des tubes étant alimentée en vapeur provenant d'un soutirage du corps basse pression, le faisceau de tube étant sensiblement horizontal et perpendiculaire à l'axe de la turbine, le faisceau de tubes ayant une section étroite et allongée dont la longueur est disposée sensiblement verticalement, le faisceau de tubes étant enfermé dans une enveloppe canalisant la vapeur autour du faisceau et recevant les canalisations de soutirage de vapeur, caractérisé en ce que ladite enveloppe a, dans la région de raccordement des canalisations d'alimentation en vapeur de soutirage, une section dont l'un des côtés s'écarte progressivement en partant du bas vers le haut du côté correspondant de l'un des deux côtés sensiblement verticaux de la section étroite et allongée dudit faisceau de tubes, et au delà de cette région, une section qui suit, avec un espace pour le passage de la vapeur, le profil de la section du faisceau de tubes, l'alimentation en vapeur se faisant par le dessus de ladite enveloppe.The object of the present invention is to overcome these drawbacks and relates to a feed water heater element for a steam production boiler of an electrical energy production installation comprising an alternator driven by a turbine comprising at least one low pressure body, said heater element consisting of a bundle of tubes and being located inside a cuff connecting said low pressure body to the con vapor denser located under this low pressure body, the tubes of said heater element being supplied with water from the condenser extraction circuit and the outer surface of the tubes being supplied with steam from a withdrawal of the low pressure body, the bundle of tube being substantially horizontal and perpendicular to the axis of the turbine, the bundle of tubes having a narrow and elongated section whose length is arranged substantially vertically, the bundle of tubes being enclosed in an envelope channeling the vapor around the bundle and receiving steam withdrawal pipes, characterized in that said envelope has, in the connection region of the steam supply pipes, one section of which one of the sides deviates progressively from the bottom to the top of the corresponding side of one of the two substantially vertical sides of the narrow and elongated section of said bundle of tubes, and beyond this reg ion, a section which follows, with a space for the passage of steam, the profile of the section of the tube bundle, the steam supply being made from above said envelope.

Selon une caractéristique d'une mise en oeuvre préférée de la présente invention, l'alimentation en vapeur par la partie supérieure de l'enveloppe est réalisée entre ledit côté de l'enveloppe et le côté correspondant de la section étroite et allongée du faisceau tubulaire.According to a characteristic of a preferred implementation of the present invention, the supply of steam through the upper part of the envelope is carried out between said side of the envelope and the corresponding side of the narrow and elongated section of the tube bundle. .

L'invention a aussi pour objet un réchauffeur d'eau caractérisé en ce qu'il comprend deux éléments séparés de réchauffeur d'eau tels que ci-dessus, placés au même niveau et alimentés par de la vapeur de soutirage de même niveau thermodynamique au moyens de canalisations provenant d'un corps base pression à admission centrale et à deux échappements symétriques.The invention also relates to a water heater characterized in that it comprises two separate water heater elements as above, placed at the same level and supplied with withdrawal steam of the same thermodynamic level at piping means from a pressure base body with central intake and two symmetrical exhausts.

Selon une réalisation préférée de l'invention les deux dits éléments séparés de réchauffeur d'eau sont alimentés par de la vapeur de soutirage d'un premier niveau thermodynamique, un second réchauffeur étant situé à l'extérieur de ladite manchette et étant alimenté en vapeur de soutirage d'un second niveau thermodynamique, par des conduites passant entre les deux dits éléments .According to a preferred embodiment of the invention, the two said separate water heater elements are supplied with withdrawal steam of a first thermodynamic level, a second heater being located outside of said sleeve and being supplied with steam. withdrawal of a second thermodynamic level, by pipes passing between the two said elements.

Avantageusement, les canalisations de soutirage relient ledit corps basse pression à la face supérieure de ladite enveloppe d'une manière sensiblement rectiligne, et la section de l'ensemble enveloppe et faisceau de tubes est légèrement inclinée par rapport à la verticale de manière à faciliter l'écoulement des condensats du côté opposé à l'alimentation de vapeur.Advantageously, the withdrawal pipes connect the said low pressure body on the upper face of said casing in a substantially rectilinear manner, and the section of the casing and tube bundle assembly is slightly inclined relative to the vertical so as to facilitate the flow of condensate on the side opposite to the steam supply.

L'invention sera explicitée ci-après plus en détail à la lumière de la description d'un exemple de réalisation de l'invention en regard du dessin annexé dans lequel :

  • La figure 1 représente schématiquement en coupe un élément de réchauffeur d'eau selon l'invention.
  • La figure 2 donne une représentation générale montrant la situation d'un réchauffeur d'eau selon l'invention par rapport à la turbine et ou condenseur.
  • La figure 3 est une vue de côté de la figure 1.
  • La figure 4 est une coupe selon IV-IV de la figure 3.
The invention will be explained below in more detail in the light of the description of an embodiment of the invention with reference to the appended drawing in which:
  • Figure 1 shows schematically in section a water heater element according to the invention.
  • FIG. 2 gives a general representation showing the situation of a water heater according to the invention with respect to the turbine and or condenser.
  • Figure 3 is a side view of Figure 1.
  • Figure 4 is a section on IV-IV of Figure 3.

En se reportant à la figure 1 l'élément de réchauffeur d'eau selon l'invention comporte un faisceau 1 de tubes qui, dans l'ensemble décrit, sont des tubes cintrés en U et donc dont l'entrée 2 et la sortie 3, comme on le voit sur la figure 3 sont situées du même côté, et une boîte à eau 4 réalisant la séparation entre l'entrée 2 et la sortie 3. La section du faisceau 1 de tubes est étroite et allongée, sensiblement rectangulaire, la plus grande longueur étant placée verticalement. Les tubes sont alimentés en eau par le circuit d'extraction du condenseur et la paroi extérieure des tubes est alimentée en vapeur de soutirage par des canalisations de soutirage. Le faisceau 1 de tubes est enfermé dans une enveloppe 6 qui canalise la vapeur autour du faisceau de tubes. Cette enveloppe 6 n'a pas la même section sur toute la longueur du réchauffeur. Dans la région du raccordement des canalisations de soutirage 5 avec l'enveloppe, celle-ci a une section telle que le montre le repère 7 de la figure 1 c'est-à-dire essentiellement telle que l'un des côtés de l'enveloppe, celui de droite sur la figure, s'écarte progressivement en partant du bas vers le haut, du côté correspondant de la section du faisceau 1 de tubes. Au delà de la région de raccordement des canalisations 5 de soutirage avec l'enveloppe 6, celle-ci a une section 8 qui a la même forme, selon un rapport homothétique un peu plus grand, que la section du faisceau de tubes. L'admission de vapeur par les conduites de soutirage 5 a lieu par le dessus de la partie 7 de l'enveloppe 6 entre la paroi en pente de cette partie 7 et le faisceau 1 de tubes.Referring to FIG. 1, the water heater element according to the invention comprises a bundle 1 of tubes which, in the assembly described, are tubes bent in a U shape and therefore whose inlet 2 and outlet 3 , as seen in Figure 3 are located on the same side, and a water box 4 realizing the separation between the inlet 2 and the outlet 3. The section of the bundle 1 of tubes is narrow and elongated, substantially rectangular, the greater length being placed vertically. The tubes are supplied with water by the condenser extraction circuit and the outside wall of the tubes is supplied with withdrawal steam by withdrawal pipes. The bundle 1 of tubes is enclosed in an envelope 6 which channels the vapor around the bundle of tubes. This envelope 6 does not have the same section over the entire length of the heater. In the region of the connection of the withdrawal pipes 5 with the casing, the latter has a section as shown by the reference 7 in FIG. 1, that is to say essentially such that one of the sides of the envelope, the one on the right in the figure, progressively departs from the bottom upwards, on the corresponding side of the section of the bundle 1 of tubes. Beyond the region of connection of the withdrawal pipes 5 with the casing 6, this has a section 8 which has the same shape, according to a slightly larger homothetic ratio than the cross-section of the tube bundle. The admission of steam via the withdrawal pipes 5 takes place from above the part 7 of the envelope 6 between the sloping wall of this part 7 and the bundle 1 of tubes.

Dans les figures 2, 3 et 4, on voit une turbine basse pression 9 d'axe 10 à deux échappements symétriques 11 et 12, placée dans une boîte d'échappement 13. La boite d'échappement 13 est reliée à un corps de condenseur 14 par une manchette 15. A l'intérieur du corps de condenseur 14 sont placés deux faisceaux de tubes du condenseur dont on a représenté les sections 16 et 17. Les tubes 18 sont alimentés en eau de la source froide par des boites à eau 19 et 20. Des plaques entretoises 21 maintiennent les tubes.In Figures 2, 3 and 4, we see a low pressure turbine 9 of axis 10 with two symmetrical exhausts 11 and 12, placed in an exhaust box 13. The exhaust box 13 is connected to a condenser body 14 by a sleeve 15. Inside the condenser body 14 are placed two bundles of condenser tubes of which sections 16 and 17 have been shown. The tubes 18 are supplied with water from the cold source by water boxes 19 and 20. Spacer plates 21 hold the tubes.

Dans la manchette 15 est placé un réchauffeur d'eau de niveau de soutirage S1 comportant deux éléments A et B semblables à l'élément de la figure 1. Ces éléments A et B sont alimentés par des canalisations de soutirage 5 provenant de soutirages de même niveau thermodynamique S1. Chaque élément A ou B est alimenté par deux canalisations 5 comme le montre la figure 4. Ces éléments sont disposés perpendiculairement à l'axe 10 de la turbine.In the sleeve 15 is placed a water heater with draw-off level S1 comprising two elements A and B similar to the element in FIG. 1. These elements A and B are supplied by draw-off pipes 5 coming from draw-offs similarly thermodynamic level S1. Each element A or B is supplied by two pipes 5 as shown in FIG. 4. These elements are arranged perpendicular to the axis 10 of the turbine.

Les figures montrent également des canalisations 22 de soutirage d'un second niveau thermodynamique S2 passant entre les éléments A et B mais dans ce cas, ces canalisations aboutissent à un réchauffeur non représenté placé à l'extérieur de la manchette 15.The figures also show pipes 22 for drawing off a second thermodynamic level S2 passing between the elements A and B but in this case, these pipes lead to a heater (not shown) placed outside the sleeve 15.

Ces figures permettent de bien voir et comprendre l'intérêt de la structure et de la disposition du réchauffeur selon l'invention, en effet on constate que l'ensemble est particulièrement ramassé, les tuyauteries restant sous la turbine dans une zone ne gênant pas le passage de la vapeur d'échappement, les canalisations de soutirage ont un tracé particulièrement simple diminuant les pertes de charge.These figures make it possible to see and understand the advantage of the structure and the arrangement of the heater according to the invention, in fact it can be seen that the assembly is particularly picked up, the pipes remaining under the turbine in an area which does not interfere with the passage of the exhaust steam, the withdrawal pipes have a particularly simple layout reducing the pressure losses.

La forme même du faisceau, étroite et allongée, laisse une large place au passage de la vapeur d'échappement d'autant plus que le renflement de l'enveloppe 6 en 7 n'existe que sur une partie seulement de la longueur du faisceau. Par ailleurs, l'alimentation interne du réchauffeur en vapeur de soutirage est excellente sans qu'il soit nécessaire de prolonger ce renflement 7 sur toute la longueur.The very shape of the bundle, narrow and elongated, leaves a large space for the passage of exhaust vapor, all the more so since the bulge of the envelope 6 at 7 exists only over a part only of the length of the bundle. Furthermore, the internal supply of the withdrawal steam heater is excellent without it being necessary to extend this bulge 7 over the entire length.

Claims (6)

1/ Elément (A, B) de réchauffeur d'eau d'alimentation d'une chaudière de production de vapeur d'une installation de production d'énergie électrique comprenant un alternateur entraîné par une turbine comportant au moins un corps basse pression (9), ledit élément de réchauffeur (A) constitué d'un faisceau de tubes et étant situé à l'intérieur d'une manchette (15) reliant ledit corps basse pression au condenseur (14) de vapeur situé sous ce corps basse pression, les tubes dudit élément de réchauffeur étant alimentés en eau provenant du circuit d'extraction du condenseur, et la surface extérieure des tubes étant alimentée en vapeur provenant d'un soutirage du corps basse pression, le faisceau de tubes étant sensiblement horizontal et perpendiculaire à l'axe (10) de la turbine, le faisceau (1) de tubes ayant une section étroite et allongée dont la longueur est disposée sensiblement verticalement, le faisceau de tubes étant enfermé dans une enveloppe (6) canalisant la vapeur autour du faisceau et recevant les canalisations (5) de soutirage de vapeur, caractérisé en ce que ladite enveloppe a, dans la région de raccordement des canalisations d'alimentation en vapeur de soutirage, une section (7) dont l'un des côtés s'écarte progressivement en partant du bas vers le haut du côté correspondant de l'un des deux côtés sensiblement verticaux de la section étroite et allongée dudit faisceau (1) de tubes, et au delà de cette région, une section qui suit, avec un espace pour le passage de la vapeur, le profil du contour de la section du faisceau de tubes, l'alimentation en vapeur se faisant par le dessus de ladite enveloppe.1 / Element (A, B) for the feed water heater of a steam production boiler of an electrical energy production installation comprising an alternator driven by a turbine comprising at least one low pressure body (9 ), said heater element (A) consisting of a bundle of tubes and being located inside a sleeve (15) connecting said low pressure body to the steam condenser (14) located under this low pressure body, the tubes of said heater element being supplied with water from the condenser extraction circuit, and the outer surface of the tubes being supplied with steam from a withdrawal of the low pressure body, the bundle of tubes being substantially horizontal and perpendicular to the axis (10) of the turbine, the bundle (1) of tubes having a narrow and elongated section the length of which is arranged substantially vertically, the bundle of tubes being enclosed in an envelope (6) channeling the vapor around the beam au and receiving the steam withdrawal pipes (5), characterized in that said envelope has, in the connection region of the steam supply pipes, a section (7) from which one of the sides deviates gradually from the bottom to the top of the corresponding side of one of the two substantially vertical sides of the narrow and elongated section of said bundle (1) of tubes, and beyond this region, a section which follows, with space for the passage of steam, the profile of the contour of the section of the tube bundle, the steam supply being made from above said envelope. 2/ Elément de réchauffeur d'eau selon la revendication 1, caractérisé en ce que l'alimentation en vapeur par la partie supérieure de l'enveloppe (6) est réalisée entre ledit côté de l'enveloppe et le côté correspondant de la section étroite et allongée dudit faisceau.2 / water heater element according to claim 1, characterized in that the steam supply through the upper part of the envelope (6) is carried out between said side of the envelope and the corresponding side of the narrow section and elongated from said beam. 3/ Réchauffeur d'eau selon la revendication 2, caractérisé en ce qu'il comprend deux éléments séparés (A, B) de réchauffeur d'eau selon la revendication 2, placés au même niveau et alimentés par de la vapeur de soutirage de même niveau thermodynamique au moyen de canalisations (5) provenant d'un corps basse pression (9) à admission centrale et à deux échappements symétriques (11, 12).3 / A water heater according to claim 2, characterized in that it comprises two separate elements (A, B) of a water heater according to claim 2, placed at the same level and supplied with withdrawal steam likewise thermodynamic level by means of pipes (5) coming from a low pressure body (9) with central intake and two symmetrical exhausts (11, 12). 4/ Réchauffeur d'eau selon la revendication 3, caractérisé en ce que les deux dits éléments séparés (A, B), de réchauffeur d'eau sont alimentés par de la vapeur de soutirage d'un premier niveau thermodynamique S1 et en ce qu'un second réchauffeur situé à l'extérieur de ladite manchette (15) est alimenté en vapeur de soutirage d'un second niveau thermodynamique S2 par des conduites (22) passant entre les deux dits éléments (A, B).4 / A water heater according to claim 3, characterized in that the two so-called separate elements (A, B) of the water heater are supplied by withdrawal steam of a first thermodynamic level S1 and in that 'A second heater located outside said sleeve (15) is supplied with withdrawal steam from a second thermodynamic level S2 by conduits (22) passing between the two said elements (A, B). 5/ Réchauffeur d'eau selon l'une des revendications 3 ou 4, caractérisé en ce que les canalisations de soutirage relient ledit corps basse pression à la face supérieure de ladite enveloppe d'une manière sensiblement rectiligne.5 / water heater according to one of claims 3 or 4, characterized in that the withdrawal pipes connect said low pressure body to the upper face of said casing in a substantially rectilinear manner. 6/ Réchauffeur d'eau selon l'une des revendications précédentes, caractérisé en ce que la section de l'ensemble enveloppe et faisceau de tubes est légèrement inclinée par rapport à la verticale de manière à faciliter l'écoulement des condensats du côté opposé à l'alimentation de vapeur.6 / water heater according to one of the preceding claims, characterized in that the section of the envelope and tube bundle assembly is slightly inclined relative to the vertical so as to facilitate the flow of condensate on the side opposite to the steam supply.
EP82100845A 1981-02-06 1982-02-05 Element of a feed-water heater of a steam boiler and feed-water heater Expired EP0058356B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8102382 1981-02-06
FR8102382A FR2499677B1 (en) 1981-02-06 1981-02-06 ELEMENT OF WATER HEATER FOR SUPPLY OF A BOILER AND WATER HEATER

Publications (2)

Publication Number Publication Date
EP0058356A1 true EP0058356A1 (en) 1982-08-25
EP0058356B1 EP0058356B1 (en) 1984-06-13

Family

ID=9254927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100845A Expired EP0058356B1 (en) 1981-02-06 1982-02-05 Element of a feed-water heater of a steam boiler and feed-water heater

Country Status (4)

Country Link
US (1) US4433546A (en)
EP (1) EP0058356B1 (en)
DE (1) DE3260224D1 (en)
FR (1) FR2499677B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651276B1 (en) * 1989-08-28 1991-10-25 Alsthom Gec CONCRETE CONDENSER FOR TURBINE WITH AXIAL EXHAUST AND TURBINE PROVIDED WITH SUCH A CONDENSER.
SE501307C2 (en) * 1993-05-19 1995-01-09 Abb Stal Ab Methods and apparatus for moisture removal at low pressure turbine
DE10033691A1 (en) 2000-07-11 2002-01-24 Alstom Power Nv Condenser neck used to feed steam from steam turbine to condenser has two level cover plates and two side walls that widen in flow direction of steam and have favorable shape with respect to flow technology

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR465428A (en) * 1913-08-30 1914-04-16 Knorr Bremse Ag Boiler feed water heater
DE325567C (en) * 1916-02-12 1920-09-15 Vickers Electrical Co Ltd Feed water preheater arrangement for condensing steam turbines
DE549433C (en) * 1929-04-17 1932-04-27 Asea Ab Condensing steam turbine with two condensers and a preheater
US3406749A (en) * 1967-02-02 1968-10-22 Ingersoll Rand Co Steam manifold for condensers
DE1813939A1 (en) * 1968-12-11 1970-06-25 Gutehoffnungshuette Sterkrade Heat exchangers, in particular feed water preheaters
DE2358349A1 (en) * 1973-04-13 1974-10-31 Hamon Sobelco Sa TWO-STAGE LOW PRESSURE PREHEATER

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR465428A (en) * 1913-08-30 1914-04-16 Knorr Bremse Ag Boiler feed water heater
DE325567C (en) * 1916-02-12 1920-09-15 Vickers Electrical Co Ltd Feed water preheater arrangement for condensing steam turbines
DE549433C (en) * 1929-04-17 1932-04-27 Asea Ab Condensing steam turbine with two condensers and a preheater
US3406749A (en) * 1967-02-02 1968-10-22 Ingersoll Rand Co Steam manifold for condensers
DE1813939A1 (en) * 1968-12-11 1970-06-25 Gutehoffnungshuette Sterkrade Heat exchangers, in particular feed water preheaters
DE2358349A1 (en) * 1973-04-13 1974-10-31 Hamon Sobelco Sa TWO-STAGE LOW PRESSURE PREHEATER

Also Published As

Publication number Publication date
FR2499677B1 (en) 1985-09-27
EP0058356B1 (en) 1984-06-13
FR2499677A1 (en) 1982-08-13
DE3260224D1 (en) 1984-07-19
US4433546A (en) 1984-02-28

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