EP0195442A1 - Apparatus for separating moisture from and for reheating steam - Google Patents

Apparatus for separating moisture from and for reheating steam Download PDF

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Publication number
EP0195442A1
EP0195442A1 EP86103772A EP86103772A EP0195442A1 EP 0195442 A1 EP0195442 A1 EP 0195442A1 EP 86103772 A EP86103772 A EP 86103772A EP 86103772 A EP86103772 A EP 86103772A EP 0195442 A1 EP0195442 A1 EP 0195442A1
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EP
European Patent Office
Prior art keywords
steam
under pressure
superheated
bundle
tubes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP86103772A
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German (de)
French (fr)
Inventor
Pascal Alias
Anne-Marie Goguey
Jacques Marjollet
Alain Quaranta
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.)
Stein Industrie SA
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Stein Industrie SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stein Industrie SA filed Critical Stein Industrie SA
Publication of EP0195442A1 publication Critical patent/EP0195442A1/en
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • F22B37/266—Separator reheaters

Definitions

  • the object of the present invention is to provide a device for drying and superheating steam making it possible to treat very high flow rates of steam, but remaining of an acceptable size and of a moderate cost price.
  • the device according to the invention is characterized in that it comprises from the top to the bottom of its part forming a heat exchanger, and in series on the path of the superheated steam under pressure, a first bundle with straight tubes inside of which the superheated steam under pressure is cooled to its saturation temperature, then a U-tube bundle inside which the saturated steam under pressure is condensed.
  • Figure 1 shows the exchanger in longitudinal axial section.
  • FIG. 2 represents the exchanger in section along the axis II-II of FIG. 1.
  • FIG. 3 represents the exchanger in section along the axis III-III of FIG. 1.
  • the steam to be dried and overheated enters the horizontal exchanger 1 through the openings 2 and 3, arranged in its lower part. It is distributed along the exchanger by members schematically shown in 4 and 5, such as those which have been the subject of patent FR-B-2 442 069 of the Applicant. It then rises towards the sets of lateral separating members 6 and 7, and central 8 and 9, as shown by the arrows.
  • These separating members are, for example, bundles of parallel corrugated sheets between which the steam flows leaving its water droplets, which run along the sheets, and are collected in gutters, from which the water is evacuated by a conduit such as 10 and tubing such as 11A, 11B, 11C, 11D.
  • the dry steam then passes through a set of tubular bundles generally designated by 12, then is sent overheated for use by the pipes 13, 14.
  • the superheat steam under high pressure is introduced into the exchanger through the tube 15. It enters the bent tubes allowing the expansion 16, then passes into the right part of the tube bundle 17, along which it cools to its temperature of saturation. It arrives in the collection chamber 18, from where it is distributed, as indicated by the arrow 19, in a bundle of U-shaped tubes 20. Arrived at the opposite end of the exchanger, the steam returns, as indicated by arrows 25, 26, 27, towards the part lower 28 of the U-shaped tubes. The steam under pressure gradually condenses as it passes through the bundle of U-shaped tubes. The condensed water is collected in the collecting chamber 29, separated from the chamber 18 by the partition 30, then is evacuated through conduit 31.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The apparatus, which has a horizontal axis, comprises, arranged parallel to its axis and symmetrically in relation to its longitudinal plane of symmetry: a) in its lower part, separator members (6, 7, 8, 9) eliminating the water b) in its upper part, bundles of superheating tubes (17, 20), in which steam superheated under pressure is cooled, then condensed in heat exchange with the steam to be superheated. It comprises from the top to the bottom of its part (12), forming a heat exchanger, and in series on the trajectory of the steam under pressure, a first bundle (17) of straight tubes for cooling this steam to its saturation temperature, then a bundle (20, 28) of U-shaped tubes, in which this steam is condensed. <IMAGE>

Description

La présente invention concerne un dispositif de séchage et de surchauffe de vapeur, d'axe longitudinal, notamment pour l'alimentation en vapeur d'eau d'une turbine de détente, comportant, disposés parallèlement à son axe et symétriquement par rapport à son plan de symétrie longitudinal,

  • a/ dans sa partie irférieure, des organes séparateurs éliminant l'eau de la vapeur humide à surchauffer,
  • b/ dans sa partie supérieure, des faisceaux de tubes constituant les surchauffeurs, dans lesquels de la vapeur surchauffée sous pression est refroidie, puis condensée en échange de chaleur avec la vapeur séchée à surchauffer.
The present invention relates to a steam drying and superheating device, with a longitudinal axis, in particular for supplying water vapor to an expansion turbine, comprising, arranged parallel to its axis and symmetrically with respect to its plane. longitudinal symmetry,
  • a / in its lower part, separating members eliminating the water from the humid steam to be overheated,
  • b / in its upper part, bundles of tubes constituting the superheaters, in which superheated steam under pressure is cooled, then condensed in exchange for heat with the dried steam to be superheated.

Le document EP-B-005 225 au nom de la Demanderesse décrit un dispositif échangeur de ce genre, dans lequel les organes séparateurs d'élimination de l'eau sont surmontés de faisceaux de tubes en U à l'intérieur desquels de la vapeur surchauffée sous pression se refroidit à sa température de saturation, puis se condense, en assurant la surchauffe de la vapeur séchée à pression plus faible.The document EP-B-005 225 in the name of the Applicant describes an exchanger device of this kind, in which the separating bodies for removing water are topped with bundles of U-shaped tubes inside which superheated steam under pressure cools to its saturation temperature, then condenses, overheating the dried steam at lower pressure.

Un tel dispositif nécessite toutefois des faisceaux de grande longueur lorsque le débit de vapeur sèche à surchauffer est très élevé. Ceci entraine des difficultés de fabrication et de transport, et un encombrement longitudinal très important. Si d'autre part l'on divisait le débit de vapeur à sécher et surchauffer entre deux dispositifs de séchage et surchauffe en parallèle, le coût de l'appareillage serait notablement augmenté.However, such a device requires very long bundles when the flow rate of dry vapor to be overheated is very high. This leads to manufacturing and transport difficulties, and a very large longitudinal bulk. If, on the other hand, the flow of steam to be dried and superheated is divided between two drying and superheating devices in parallel, the cost of the apparatus would be significantly increased.

La présente invention a pour but de procurer un dispositif de séchage et de surchauffe de vapeur permettant de traiter des débits très élevés de vapeur, mais restant d'un encombrement acceptable et d'un prix de revient modéré.The object of the present invention is to provide a device for drying and superheating steam making it possible to treat very high flow rates of steam, but remaining of an acceptable size and of a moderate cost price.

Le dispositif selon l'invention est caractérisé en ce qu'il comprend du haut vers le bas de sa partie formant échangeur de chaleur, et en série sur le trajet de la vapeur surchauffée sous pression, un premier faisceau à tubes droits à l'intérieur desquels la vapeur surchauffée sous pression est refroidie à sa température de saturation, puis un faisceau à tubes en U à l'intérieur desquels la vapeur saturée sous pression est condensée.The device according to the invention is characterized in that it comprises from the top to the bottom of its part forming a heat exchanger, and in series on the path of the superheated steam under pressure, a first bundle with straight tubes inside of which the superheated steam under pressure is cooled to its saturation temperature, then a U-tube bundle inside which the saturated steam under pressure is condensed.

Il est décrit ci-après, à titre d'exemple et en référence aux figures du dessin annexé, un dispositif de séchage et de surchauffe de la vapeur d'eau d'alimentation d'une turbine de détente dans une centrale de production d'énergie, selon l'invention.It is described below, by way of example and with reference to the figures of the appended drawing, a device for drying and superheating the steam supply water to an expansion turbine in a production plant of energy according to the invention.

La figure 1 représente l'échangeur en coupe axiale longitudinale.Figure 1 shows the exchanger in longitudinal axial section.

La figure 2 représente l'échangeur en coupe selon l'axe II-II de la figure 1.FIG. 2 represents the exchanger in section along the axis II-II of FIG. 1.

La figure 3 représente l'échangeur en coupe selon l'axe III-III de la figure 1.FIG. 3 represents the exchanger in section along the axis III-III of FIG. 1.

La vapeur d'eau à sécher et surchauffer pénètre dans l'échangeur horizontal 1 par les ouvertures 2 et 3, disposées dans sa partie inférieure. Elle est répartie le long de l'échangeur par des organes représentés schématiquement en 4 et 5, tels que ceux ayant fait l'objet du brevet FR-B-2 442 069 de la Demanderesse. Elle s'élève ensuite vers les jeux d'organes séparateurs latéraux 6 et 7, et centraux 8 et 9, comme représenté par les flèches. Ces organes séparateurs sont par exemple des paquets de tôles ondulées parallèles entre lesquelles s'écoule la vapeur en abandonnant ses gouttelettes d'eau, qui ruissellent le long des tôles, et sont recueillies dans des gouttières, d'où l'eau est évacuée par un conduit tel que 10 et des tubulures telles que 11A, 11B, 11C, 11D.The steam to be dried and overheated enters the horizontal exchanger 1 through the openings 2 and 3, arranged in its lower part. It is distributed along the exchanger by members schematically shown in 4 and 5, such as those which have been the subject of patent FR-B-2 442 069 of the Applicant. It then rises towards the sets of lateral separating members 6 and 7, and central 8 and 9, as shown by the arrows. These separating members are, for example, bundles of parallel corrugated sheets between which the steam flows leaving its water droplets, which run along the sheets, and are collected in gutters, from which the water is evacuated by a conduit such as 10 and tubing such as 11A, 11B, 11C, 11D.

La vapeur sèche traverse alors un ensemble de faisceaux tubulaires désigné de manière générale par 12, puis est envoyée surchauffée à l'utilisation par les tubulures 13, 14.The dry steam then passes through a set of tubular bundles generally designated by 12, then is sent overheated for use by the pipes 13, 14.

La vapeur de surchauffe sous pression élevée est introduite dans l'échangeur par la tubulure 15. Elle pénètre dans les tubes coudés permettant la dilatation 16, puis passe dans la partie droite du faisceau tubulaire 17, le long duquel elle se refroidit à sa température de saturation. Elle parvient dans la chambre de collecte 18, d'où elle se répartit, comme indiqué par la flèche 19, dans un faisceau de tubes en U 20. Parvenue à l'extrémité opposée de l'échangeur, la vapeur revient, comme indiqué par les flèches 25, 26, 27, vers la partie inférieure 28 des tubes en U. La vapeur sous pression se condense progressivement au fur et à mesure de son passage dans le faisceau de tubes en U. L'eau condensée est recueillie dans la chambre de collecte 29, séparée de la chambre 18 par la cloison 30, puis est évacuée par le conduit 31.The superheat steam under high pressure is introduced into the exchanger through the tube 15. It enters the bent tubes allowing the expansion 16, then passes into the right part of the tube bundle 17, along which it cools to its temperature of saturation. It arrives in the collection chamber 18, from where it is distributed, as indicated by the arrow 19, in a bundle of U-shaped tubes 20. Arrived at the opposite end of the exchanger, the steam returns, as indicated by arrows 25, 26, 27, towards the part lower 28 of the U-shaped tubes. The steam under pressure gradually condenses as it passes through the bundle of U-shaped tubes. The condensed water is collected in the collecting chamber 29, separated from the chamber 18 by the partition 30, then is evacuated through conduit 31.

Claims (1)

Dispositif de séchage et de surchauffe de vapeur, d'axe horizontal, notamment pour l'alimentation en vapeur d'eau d'une turbine de détente, comportant, disposés parallèlement à son axe et symétriquement par rapport à son plan de symétrie longitudinal, a/ dans sa partie inférieure, des organes séparateurs (6, 7, 8, 9, figure 1) éliminant l'eau de la vapeur humide à surchauffer, b/ dans sa partie supérieure, des faisceaux de tubes (17, 20, 28) constituant les surchauffeurs, dans lesquels de la vapeur surchauffée sous pression est refroidie, puis condensée en échange de chaleur avec la vapeur séchée à surchauffer,
caractérisé en ce qu'il comprend du haut vers le bas de sa partie formant échangeur de chaleur, et en série sur le trajet de la vapeur surchauffée sous pression, un premier faisceau (17) à tubes droits à l'intérieur desquels la vapeur surchauffée sòus pression est refroidie à sa température de saturation, puis un faisceau (20, 28) à tubes en U à l'intérieur desquels la vapeur saturée sous pression est condensée.Steam drying and superheating device, with a horizontal axis, in particular for supplying water vapor to an expansion turbine, comprising, arranged parallel to its axis and symmetrically with respect to its longitudinal plane of symmetry, a / in its lower part, separating members (6, 7, 8, 9, FIG. 1) eliminating the water from the humid steam to be overheated, b / in its upper part, bundles of tubes (17, 20, 28) constituting the superheaters, in which superheated steam under pressure is cooled, then condensed in exchange for heat with the dried steam to be superheated,
characterized in that it comprises from the top to the bottom of its part forming a heat exchanger, and in series on the path of the superheated steam under pressure, a first bundle (17) with straight tubes inside which the superheated steam when the pressure is cooled to its saturation temperature, then a bundle (20, 28) of U-tubes inside which the saturated vapor under pressure is condensed.
EP86103772A 1985-03-22 1986-03-20 Apparatus for separating moisture from and for reheating steam Ceased EP0195442A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8504301 1985-03-22
FR8504301A FR2579299B1 (en) 1985-03-22 1985-03-22 DISP

Publications (1)

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EP0195442A1 true EP0195442A1 (en) 1986-09-24

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EP86103772A Ceased EP0195442A1 (en) 1985-03-22 1986-03-20 Apparatus for separating moisture from and for reheating steam

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EP (1) EP0195442A1 (en)
JP (1) JPS61225505A (en)
FR (1) FR2579299B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2530257A3 (en) * 2011-05-30 2017-12-20 Robert Bosch Gmbh Waste heat usage assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2165578A5 (en) * 1971-12-17 1973-08-03 Bbc Brown Boveri & Cie
US4016835A (en) * 1975-08-01 1977-04-12 Southwestern Engineering Company Moisture separator-reheater
GB1479840A (en) * 1976-02-27 1977-07-13 English Electric Co Ltd Steam reheaters
DE2917498A1 (en) * 1978-05-19 1979-11-22 Skoda Np SURFACE HEAT EXCHANGER
FR2453356A1 (en) * 1979-04-07 1980-10-31 Balcke Duerr Ag Steam generator superheater reheat arrangement - has tube nest preceded by heating surface around which reheat steam flows

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148523A (en) * 1974-10-25 1976-04-26 Koshuha Netsuren Kk PURESUTORESUTOKONKURIITOYOKOZAI OYOBISONO SEIZOHOHO
JPS586305A (en) * 1981-06-30 1983-01-13 株式会社日立製作所 Reheater

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2165578A5 (en) * 1971-12-17 1973-08-03 Bbc Brown Boveri & Cie
US4016835A (en) * 1975-08-01 1977-04-12 Southwestern Engineering Company Moisture separator-reheater
GB1479840A (en) * 1976-02-27 1977-07-13 English Electric Co Ltd Steam reheaters
DE2917498A1 (en) * 1978-05-19 1979-11-22 Skoda Np SURFACE HEAT EXCHANGER
FR2453356A1 (en) * 1979-04-07 1980-10-31 Balcke Duerr Ag Steam generator superheater reheat arrangement - has tube nest preceded by heating surface around which reheat steam flows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2530257A3 (en) * 2011-05-30 2017-12-20 Robert Bosch Gmbh Waste heat usage assembly

Also Published As

Publication number Publication date
JPS61225505A (en) 1986-10-07
FR2579299A1 (en) 1986-09-26
FR2579299B1 (en) 1987-05-07

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Inventor name: QUARANTA, ALAIN