EP0373554A1 - Superheater tube bundle for a horizontal steam separator-reheater - Google Patents

Superheater tube bundle for a horizontal steam separator-reheater Download PDF

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Publication number
EP0373554A1
EP0373554A1 EP89122813A EP89122813A EP0373554A1 EP 0373554 A1 EP0373554 A1 EP 0373554A1 EP 89122813 A EP89122813 A EP 89122813A EP 89122813 A EP89122813 A EP 89122813A EP 0373554 A1 EP0373554 A1 EP 0373554A1
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EP
European Patent Office
Prior art keywords
frame
oblique
tubes
superheated steam
orifice
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Granted
Application number
EP89122813A
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German (de)
French (fr)
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EP0373554B1 (en
Inventor
Alain Charbonnel
Jean-Claude Foucher
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Stein Industrie SA
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Stein Industrie SA
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Publication date
Application filed by Stein Industrie SA filed Critical Stein Industrie SA
Publication of EP0373554A1 publication Critical patent/EP0373554A1/en
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Publication of EP0373554B1 publication Critical patent/EP0373554B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/005—Steam superheating characterised by heating method the heat being supplied by steam

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

Faisceau de surchauffe pour séparateur-surchauffeur de vapeur horizontal, comprenant un réseau de tubes parallèles disposés selon un maillage en quinconce à l'intérieur d'un cadre (3, 4), symétrique par rapport à son plan de symétrie, délimitant dans sa partie inférieure un orifice d'accès de la vapeur à surchauffer, et dans sa partie supérieure un orifice d'évacuation de la vapeur surchauffée. Le cadre (3, 4) est de forme polygonale, et au moins deux des côtés obliques (11, 13, 15, 17 ; 12, 14, 16, 18) du polygone sont parallèles aux segments obliques formés par le maillage des tubes.Superheat beam for horizontal vapor separator-superheater, comprising a network of parallel tubes arranged in a staggered mesh inside a frame (3, 4), symmetrical with respect to its plane of symmetry, delimiting in its part lower an orifice for access to the superheated steam, and in its upper part an orifice for discharging the superheated steam. The frame (3, 4) is polygonal, and at least two of the oblique sides (11, 13, 15, 17; 12, 14, 16, 18) of the polygon are parallel to the oblique segments formed by the mesh of the tubes.

Description

La présente invention concerne un faisceau de surchauffe pour séparateur-surchauffeur de vapeur horizontal, disposé notamment entre deux étages d'une turbine de détente, comprenant un réseau de tubes parallèles disposés selon un maillage en quinconce à l'inté­rieur d'un cadre de forme polygonale, symétrique par rapport à son plan de symétrie, délimitant dans sa partie inférieure un orifice d'accès de la vapeur à surchauffer et dans sa partie supérieure un orifice d'évacuation de la vapeur surchauffée.The present invention relates to an overheating bundle for a horizontal steam separator-superheater, arranged in particular between two stages of an expansion turbine, comprising a network of parallel tubes arranged in a staggered mesh inside a shaped frame polygonal, symmetrical with respect to its plane of symmetry, delimiting in its lower part an orifice for access to the superheated steam and in its upper part an orifice for discharging the superheated steam.

On a déjà proposé dans le document US-A-4485069 un faisceau de surchauffe de ce genre, dont les tubes sont disposés à l'intérieur d'un cadre cylindrique de section droite circulaire suspendu par des attaches en queue d'aronde dans un cadre externe également circulaire relié à la structure d'ensemble du séparateur-surchauffeur.Document US-A-4485069 has already proposed such an overheating bundle, the tubes of which are arranged inside a cylindrical frame of circular cross section suspended by dovetail fasteners in a frame. also circular external connected to the overall structure of the separator-superheater.

Dans un tel faisceau, les rangées latérales obliques extrêmes des tubes en quinconce ne peuvent être complètes, du fait que les segments obliques extrêmes sur lesquels ces tubes devraient se placer viennent couper à leurs extrêmités le cadre cylindrique et que l'on ne peut disposer des tubes à proximité immédiate de ce cadre. Ceci entraîne certains vides sur les côtés du faisceau, et par suite une tendance de la vapeur à surchauffer à s'écouler préférentiellement sur les côtés, où la résistance à son écoulement est la plus faible. Il en résulte un réchauffage inégal de cette vapeur, et par ailleurs le nombre de tubes du faisceau n'est pas optimal par rapport à la section droite occupée par celui-ci.In such a bundle, the extreme oblique lateral rows of the staggered tubes cannot be complete, owing to the fact that the extreme oblique segments on which these tubes should be placed cut the cylindrical frame at their ends and that one cannot have the tubes in the immediate vicinity of this frame. This results in some voids on the sides of the bundle, and therefore a tendency for the steam to overheat to flow preferentially on the sides, where the resistance to its flow is weakest. This results in uneven heating of this vapor, and moreover the number of tubes of the bundle is not optimal with respect to the cross section occupied by it.

On a aussi proposé dans le brevet US-3326280 un échangeur de chaleur horizontal de réchauffage et de vaporisation d'un fluide circulant autour d'un faisceau de tubes de circulation d'un gaz subissant un refroidissement et une condensation, ces tubes étant disposés selon un maillage rectangulaire à l'intérieur d'un cadre de forme polygonale.There has also been proposed in patent US-3326280 a horizontal heat exchanger for reheating and vaporizing a fluid circulating around a bundle of gas circulation tubes undergoing cooling and condensation, these tubes being arranged according to a rectangular mesh inside a polygonal frame.

Dans un tel échangeur, le nombre de tubes du faisceau, et par suite la surface d'échange de chaleur par unité de section droite, sont aussi relativement limités.In such an exchanger, the number of tubes of the bundle, and consequently the heat exchange surface per unit of cross section, are also relatively limited.

La présente invention a pour but de procurer un faisceau de surchauffe pour séparateur-surchauffeur de vapeur horizontal qui présente un remplissage homogène de la section droite de son cadre et un nombre de tubes par unité de section droite optimal, et qui évite toute tendance de la vapeur à surchauffer à s'écouler préférentiellement le long de son cadre.The object of the present invention is to provide an overheating bundle for a horizontal vapor separator-superheater which has a homogeneous filling of the cross section of its frame and an optimal number of tubes per unit of cross section, and which avoids any tendency of the steam to be overheated to flow preferentially along its frame.

Le faisceau selon l'invention est caractérisé en ce qu'au moins deux des côtés obliques du cadre de forme polygonale sont parallèles aux segments obliques formés par le maillage des tubes.The beam according to the invention is characterized in that at least two of the oblique sides of the polygonal frame are parallel to the oblique segments formed by the mesh of the tubes.

Le cadre comporte en outre de préférence deux côtés verticaux latéraux.The frame also preferably has two lateral vertical sides.

Les côtés obliques inférieurs ou supérieurs du cadre se terminent avantageusement chacun par un court segment horizontal, et il est disposé alors latéralement et respectivement au-dessus ou au-dessous de ces segments des tôles obliques venant s'appuyer tangentiellement sur eux, de façon à s'opposer à tout contournement du cadre du faisceau de tubes par la vapeur à surchauffer.The lower or upper oblique sides of the frame advantageously each end in a short horizontal segment, and it is then arranged laterally and respectively above or below these segments of oblique sheets coming to bear tangentially on them, so as to oppose any circumvention of the tube bundle frame by the steam to be overheated.

Il est décrit ci-après, à titre d'exemple et en référence a la figure unique du dessin annexé, un faisceau de surchauffe pour séparateur-surchauffeur de vapeur selon l'invention, vu en section droite.It is described below, by way of example and with reference to the single figure of the accompanying drawing, an overheating bundle for a steam separator-superheater according to the invention, seen in cross section.

Ce faisceau est contenu à l'intérieur d'un cadre rectangulaire dont les cloisons latérales 1 et 2 sont représentées, relié de façon rigide à la virole du séparateur-surchauffeur, non représentée.This bundle is contained within a rectangular frame, the side partitions 1 and 2 of which are shown, rigidly connected to the shell of the separator-superheater, not shown.

Les tubes de surchauffe, étant en épingle à cheveux, sont coupés deux fois par le plan de la figure, ou sont donc représentés les éléments des faisceaux supérieur 3 et inférieur 4.The superheating tubes, being a hairpin, are cut twice by the plane of the figure, or are therefore represented the elements of the upper 3 and lower 4 bundles.

Ces éléments du faisceau comportent chacun une poutrelle centrale 5, 6 venant reposer par ses bords sur des appuis latéraux 7, 9 et 8, 10 respectivement, solidaires des cloisons latérales 1, 2.These elements of the bundle each comprise a central beam 5, 6 coming to rest by its edges on lateral supports 7, 9 and 8, 10 respectively, integral with the lateral partitions 1, 2.

Les éléments du faisceau sont contenus dans des cadres 3 et 4 de forme hexagonale irrégulière, comportant des côtés obliques 11, 13, 15, 17 et 12, 14, 16, 18 respectivement, et des côtés verticaux 19, 21, et 20, 22. Ces cadres délimitent des ouvertures de passage inférieures et supérieures pour la vapeur à surchauffer à travers chacun des éléments du faisceau. Les côtés obliques du cadre sont parallèles aux segments formés par les tubes en quinconce, de sorte que les rangées extrêmes de tubes sont à une distance constante du cadre et que l'on obtient un taux d'occupation maximal de la section droite des cadres par les tubes. On évite ainsi par ailleurs tout écoulement préférentiel de la vapeur le long des cadres, source d'hétérogénéité de la surchauffe.The elements of the bundle are contained in frames 3 and 4 of irregular hexagonal shape, having oblique sides 11, 13, 15, 17 and 12, 14, 16, 18 respectively, and vertical sides 19, 21, and 20, 22 These frames delimit passage openings lower and upper for the steam to be superheated through each of the elements of the bundle. The oblique sides of the frame are parallel to the segments formed by the staggered tubes, so that the extreme rows of tubes are at a constant distance from the frame and that a maximum occupancy rate of the cross section of the frames is obtained by the tubes. This also avoids any preferential flow of steam along the frames, a source of heterogeneity in overheating.

Pour éviter tout écoulement préférentiel de la vapeur à surchauf­fer le long de la surface externe des cadres 3, 4, les côtés obliques supérieurs 11, 13 du cadre supérieur 3 et inférieurs 16, 18 du cadre inférieur 4 se prolongent par de courts segments horizontaux 23, 25 et 24, 26, auxquels se raccordent tangentiellement des tôles obliques 27, 29 et 28, 30, fixées par boulonnage sur des pattes 31, 33 et 32, 34 soudées sur les cloisons latérales 1, 2.To avoid any preferential flow of the steam to be superheated along the external surface of the frames 3, 4, the upper oblique sides 11, 13 of the upper frame 3 and lower 16, 18 of the lower frame 4 are extended by short horizontal segments 23 , 25 and 24, 26, to which tangentially oblique sheets 27, 29 and 28, 30 are connected, bolted to lugs 31, 33 and 32, 34 welded to the side partitions 1, 2.

L'invention s'applique en particulier aux séparateurs-surchauf­feurs de centrales de production d'énergie et/ou de vapeur à turbines de détente de vapeur à plusieurs étages.The invention applies in particular to separator-superheaters of power plants for production of energy and / or steam with multi-stage steam expansion turbines.

Claims (3)

1/ Faisceau de surchauffe pour séparateur-surchauffeur de vapeur horizontal, comprenant un réseau de tubes parallèles disposés selon un maillage en quinconce à l'intérieur d'un cadre (3, 4) de forme polygonale, symétrique par rapport à son plan de symétrie, délimitant dans sa partie inférieure un orifice d'accès de la vapeur à surchauf­fer, et dans sa partie supérieure un orifice d'évacuation de la vapeur surchauffée,
caractérisé en ce qu'au moins deux des côtés obliques (11, 13, 15, 17 ; 12, 14, 16, 18) du cadre de forme polygonale sont parallèles aux segments obliques formés par le maillage des tubes.1 / Superheat beam for horizontal vapor separator-superheater, comprising a network of parallel tubes arranged in a staggered mesh inside a frame (3, 4) of polygonal shape, symmetrical with respect to its plane of symmetry , delimiting in its lower part an orifice for access to the superheated steam, and in its upper part an orifice for discharging the superheated steam,
characterized in that at least two of the oblique sides (11, 13, 15, 17; 12, 14, 16, 18) of the polygonal frame are parallel to the oblique segments formed by the mesh of the tubes. 2/ Faisceau selon la revendication 1, caractérisé en ce que le cadre comporte en outre deux côtés verticaux latéraux (19, 21 ; 20, 22).2 / beam according to claim 1, characterized in that the frame further comprises two lateral vertical sides (19, 21; 20, 22). 3/ Faisceau selon l'une des revendications 1 ou 2, caractérisé en ce que les côtés obliques inférieurs ou supérieurs du cadre (15, 17 ; 16, 18) se terminent par un court segment horizontal (23, 25 ; 24, 26), et en ce qu'il est disposé latéralement et respecti­vement au-dessus ou au-dessous des segments horizontaux des tôles obliques (27, 29 ; 28, 30) venant s'appuyer tangentiellement sur eux, de façon à s'opposer à tout contournement du cadre du faisceau de tubes par la vapeur à surchauffer.3 / A beam according to one of claims 1 or 2, characterized in that the lower or upper oblique sides of the frame (15, 17; 16, 18) end in a short horizontal segment (23, 25; 24, 26) , and in that it is arranged laterally and respectively above or below the horizontal segments of the oblique sheets (27, 29; 28, 30) coming to bear tangentially on them, so as to oppose everything bypassing the tube bundle frame with superheated steam.
EP89122813A 1988-12-15 1989-12-11 Superheater tube bundle for a horizontal steam separator-reheater Expired - Lifetime EP0373554B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816557 1988-12-15
FR8816557A FR2640727B1 (en) 1988-12-15 1988-12-15 OVERHEATER BEAM FOR HORIZONTAL STEAM SEPARATOR-SUPERHEATER

Publications (2)

Publication Number Publication Date
EP0373554A1 true EP0373554A1 (en) 1990-06-20
EP0373554B1 EP0373554B1 (en) 1993-09-01

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ID=9372992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122813A Expired - Lifetime EP0373554B1 (en) 1988-12-15 1989-12-11 Superheater tube bundle for a horizontal steam separator-reheater

Country Status (7)

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US (1) US4977861A (en)
EP (1) EP0373554B1 (en)
JP (1) JP2728961B2 (en)
KR (1) KR0140892B1 (en)
CA (1) CA2005593C (en)
ES (1) ES2044034T3 (en)
FR (1) FR2640727B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112013374A (en) * 2020-09-04 2020-12-01 哈尔滨汽轮机厂辅机工程有限公司 Vertical MSR structure of marine floating pile

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2714264B2 (en) * 1991-01-29 1998-02-16 株式会社東芝 Moisture separation heater
WO2006044448A2 (en) * 2004-10-13 2006-04-27 York International Corporation Falling film evaporator
WO2008080085A2 (en) * 2006-12-21 2008-07-03 Johnson Controls Technology Company Falling film evaporator with a hood and a flow distributor
EP2232167A1 (en) 2008-01-11 2010-09-29 Johnson Controls Technology Company Heat exchanger
US20110056664A1 (en) * 2009-09-08 2011-03-10 Johnson Controls Technology Company Vapor compression system
US10209013B2 (en) 2010-09-03 2019-02-19 Johnson Controls Technology Company Vapor compression system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326280A (en) * 1962-11-22 1967-06-20 Air Liquide Heat exchanger with baffle structure
GB1384312A (en) * 1971-03-27 1975-02-19 Babcock & Wilcox Ltd Vapour drier heaters
US4382467A (en) * 1978-08-17 1983-05-10 American Precision Industries Inc. Heat exchanger of the tube and plate type
US4485069A (en) * 1982-01-20 1984-11-27 Westinghouse Electric Corp. Moisture separator reheater with round tube bundle
US4714054A (en) * 1986-04-02 1987-12-22 Westinghouse Electric Corp. Moisture trap for a moisture separator reheater

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553867B1 (en) * 1983-10-19 1985-12-27 Stein Industrie STEAM SUPERHEATER SEPARATOR AND MOUNTING METHOD THEREOF
FR2579298B1 (en) * 1985-03-22 1987-05-07 Stein Industrie DEVICE FOR DRYING AND OVERHEATING VAPOR BY HEAT EXCHANGE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326280A (en) * 1962-11-22 1967-06-20 Air Liquide Heat exchanger with baffle structure
GB1384312A (en) * 1971-03-27 1975-02-19 Babcock & Wilcox Ltd Vapour drier heaters
US4382467A (en) * 1978-08-17 1983-05-10 American Precision Industries Inc. Heat exchanger of the tube and plate type
US4485069A (en) * 1982-01-20 1984-11-27 Westinghouse Electric Corp. Moisture separator reheater with round tube bundle
US4714054A (en) * 1986-04-02 1987-12-22 Westinghouse Electric Corp. Moisture trap for a moisture separator reheater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112013374A (en) * 2020-09-04 2020-12-01 哈尔滨汽轮机厂辅机工程有限公司 Vertical MSR structure of marine floating pile

Also Published As

Publication number Publication date
KR900010298A (en) 1990-07-07
CA2005593A1 (en) 1990-06-15
US4977861A (en) 1990-12-18
EP0373554B1 (en) 1993-09-01
JP2728961B2 (en) 1998-03-18
FR2640727A1 (en) 1990-06-22
CA2005593C (en) 1999-07-27
JPH02251003A (en) 1990-10-08
KR0140892B1 (en) 1998-07-01
FR2640727B1 (en) 1991-08-16
ES2044034T3 (en) 1994-01-01

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