EP0379115B1 - Superheater tube bundle for a horizontal steam separator-reheater - Google Patents
Superheater tube bundle for a horizontal steam separator-reheater Download PDFInfo
- Publication number
- EP0379115B1 EP0379115B1 EP90100717A EP90100717A EP0379115B1 EP 0379115 B1 EP0379115 B1 EP 0379115B1 EP 90100717 A EP90100717 A EP 90100717A EP 90100717 A EP90100717 A EP 90100717A EP 0379115 B1 EP0379115 B1 EP 0379115B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- superheater
- steam separator
- separator
- reheater
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 description 5
- 239000011888 foil Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details or component parts thereof
-
- 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
Definitions
- the present invention relates to a superheating bundle for a vapor separator-superheater with horizontal tubes arranged inside a rectangular frame.
- Document FR-A-2485144 describes a foil sealing between two enclosures included in a common shell, under pressures and at different temperatures, comprising a first branch fixed against a partition separating the enclosures and a second branch forming an angle with the first and resting elastically on an internal wall of the shell.
- a sealing foil is not exposed to vibrations in the event of a sealing defect, like rectangular frames of superheating bundles for a vapor separator-superheater, where the steam flow rates are high and where the vapor flows at high speed along the edges of the frame in the event of leakage and causes significant vibrations detrimental to the mechanical strength and aggravating the leakage.
- a sealing member for a heat exchanger with horizontal tubes has been proposed in document US-A-1803035, composed of several elastic strips fixed at one end using a clamping strip on a longitudinal partition and s 'each pressing at its other end on the cylindrical shell of the exchanger.
- Such a device does not dampen vibrations in the event of a leak, the blades all being rigidly supported at each end.
- the object of the present invention is to provide an overheating beam capable of absorbing the vibrations which may appear in the event of a leak in the edges of its frame, and therefore of reducing the bypassing of steam, and which can be mounted on the separator-superheater in the factory.
- the superheating bundle according to the invention is characterized in that its rectangular frame is not rigidly connected to the structure of the separator-superheater, and in that it is provided on each edge with two superimposed elastic blades forming a flexible skirt, generally square, fixed by the end of a small side on each edge of the upper part of the frame, the external blade coming to rest by its long side on a side plate rigidly connected to the structure, and the internal blade, having a short side shorter than the external blade, coming to rest by its large side on the internal face of the external blade.
- Figure 1 shows the beam in section perpendicular to its axis.
- Figure 2 shows on a larger scale the detail II of Figure 1, constituted by the elastic blades forming a connecting skirt between the internal frame and the external frame rigidly connected to the structure.
- the set of tubular superheating bundles 5, 6, consisting of tubes distributed in a triangular network, is contained in the rectangular frame 4, itself held inside the rigid frame formed by the side plates 2, 3 rigidly connected to the cylindrical outer shell.
- the bundles 5, 6 are constituted for example by hairpin tubes, connected to tubular plates on the same side of the plane of the figure.
- the bundles 5, 6 are separated from each other by a plate 11 perforated with steam passage holes.
- the internal frame 4 is elastically connected to the external frame 2, 3 rigidly connected to the ferrule, by systems of flexible angled blades 7, 8 forming a flexible skirt, the short sides of which are fixed by bolting at 9, 10 on the upper part of the frame 4 and whose long sides press on the internal faces of the plates 2, 3.
- the sealing skirt preferably comprises on each side two blades 7A, 7B, bolted together at 9 on the upper part of the frame 4, and whose inner blade 7B has a short side shorter than the blade external 7A, and comes to bear by its large side on the internal face of this external blade.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Separating Particles In Gases By Inertia (AREA)
- Gasket Seals (AREA)
- Joints Allowing Movement (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
La présente invention concerne un faisceau de surchauffe pour séparateur-surchauffeur de vapeur à tubes horizontaux disposés à l'intérieur d'un cadre rectangulaire.The present invention relates to a superheating bundle for a vapor separator-superheater with horizontal tubes arranged inside a rectangular frame.
On connaît notamment par le document EP-A-0005225 de la demanderesse un séparateur-surchauffeur de vapeur de ce genre, d'axe horizontal, comportant au-dessus des séparateurs de l'eau entraînée par la vapeur des faisceaux rectangulaires de surchauffe de cette vapeur par échange de chaleur avec de la vapeur sous pression plus élevée. Ces faisceaux sont maintenus dans des cadres reliés rigidement à des poutres transversales à l'axe du séparateur-surchauffeur.Particularly known from document EP-A-0005225 of the applicant a steam separator-superheater of this kind, of horizontal axis, comprising above the water separators entrained by the vapor rectangular bundles of superheating of this steam by heat exchange with steam under higher pressure. These bundles are held in frames rigidly connected to beams transverse to the axis of the separator-superheater.
Ils n'assurent pas une étanchéité parfaite à l'encontre du contournement du faisceau tubulaire par la vapeur le long des côtés latéraux du cadre. Ils ne peuvent être installés dans le séparateur-surchauffeur que sur chantier, par exemple en les faisant rouler sur des rails fixés à la partie inférieure du cadre rigide.They do not provide a perfect seal against the circumvention of the tube bundle by steam along the lateral sides of the frame. They can only be installed in the separator-superheater on site, for example by rolling them on rails fixed to the lower part of the rigid frame.
Il est décrit dans le document FR-A-2485144 un clinquant d'étanchéité entre deux enceintes comprises dans une virole commune, sous des pressions et à des températures différentes, comprenant une première branche fixée contre une cloison séparant les enceintes et une seconde branche formant un angle avec la première et s'appuyant élastiquement sur une paroi interne de la virole. Un tel clinquant d'étanchéité n'est pas exposé à des vibrations en cas de défaut d'étanchéité, comme des cadres rectangulaires de faisceaux de surchauffe pour séparateur-surchauffeur de vapeur, où les débits de vapeur sont élevés et où la vapeur s'écoule à grande vitesse le long des bords du cadre en cas de défaut d'étanchéité et entraîne des vibrations importantes nuisibles à la tenue mécanique et aggravant le défaut d'étanchéité.Document FR-A-2485144 describes a foil sealing between two enclosures included in a common shell, under pressures and at different temperatures, comprising a first branch fixed against a partition separating the enclosures and a second branch forming an angle with the first and resting elastically on an internal wall of the shell. Such a sealing foil is not exposed to vibrations in the event of a sealing defect, like rectangular frames of superheating bundles for a vapor separator-superheater, where the steam flow rates are high and where the vapor flows at high speed along the edges of the frame in the event of leakage and causes significant vibrations detrimental to the mechanical strength and aggravating the leakage.
Il a été proposé dans le document US-A-1803035 un organe d'étanchéité pour échangeur de chaleur à tubes horizontaux, composé de plusieurs lames élastiques fixées par une extrémité à l'aide d'une lame de serrage sur une cloison longitudinale et s'appuyant chacune par son autre extrémité sur la virole cylindrique de l'échangeur. Un tel dispositif ne permet pas d'amortir les vibrations en cas de défaut d'étanchéité, les lames étant toutes en appui rigide à chaque extrémité.A sealing member for a heat exchanger with horizontal tubes has been proposed in document US-A-1803035, composed of several elastic strips fixed at one end using a clamping strip on a longitudinal partition and s 'each pressing at its other end on the cylindrical shell of the exchanger. Such a device does not dampen vibrations in the event of a leak, the blades all being rigidly supported at each end.
La présente invention a pour but de procurer un faisceau de surchauffe susceptible d'absorber les vibrations pouvant apparaître en cas de défaut d'étanchéité sur les bords de son cadre, et dès lors de réduire les contournements de vapeur, et pouvant être monté sur le séparateur-surchauffeur en usine.The object of the present invention is to provide an overheating beam capable of absorbing the vibrations which may appear in the event of a leak in the edges of its frame, and therefore of reducing the bypassing of steam, and which can be mounted on the separator-superheater in the factory.
La faisceau de surchauffe selon l'invention est caractérisé en ce que son cadre rectangulaire n'est pas relié rigidement à la structure du séparateur-surchauffeur, et en ce qu'il est muni sur chaque bord de deux lames élastiques superposées formant jupe flexible, en forme générale d'équerre, fixées par l'extrémité d'un petit côté sur chaque bord de la partie supérieure du cadre, la lame externe venant s'appuyer par son grand côté sur une plaque latérale reliée rigidement à la structure, et la lame interne, présentant un petit côté plus court que la lame externe, venant appuyer par son grand côté sur la face interne de la lame externe.The superheating bundle according to the invention is characterized in that its rectangular frame is not rigidly connected to the structure of the separator-superheater, and in that it is provided on each edge with two superimposed elastic blades forming a flexible skirt, generally square, fixed by the end of a small side on each edge of the upper part of the frame, the external blade coming to rest by its long side on a side plate rigidly connected to the structure, and the internal blade, having a short side shorter than the external blade, coming to rest by its large side on the internal face of the external blade.
Il est décrit ci-après, à titre d'exemple et en référence aux figures du dessin annexé, un faisceau de surchauffe selon l'invention.It is described below, by way of example and with reference to the figures of the accompanying drawing, an overheating bundle according to the invention.
La figure 1 représente le faisceau en coupe perpendiculaire à son axe.Figure 1 shows the beam in section perpendicular to its axis.
La figure 2 représente à plus grande échelle le détail II de la figure 1, constitué par les lames élastiques formant jupe de liaison entre le cadre interne et le cadre externe relié rigidement à la structure.Figure 2 shows on a larger scale the detail II of Figure 1, constituted by the elastic blades forming a connecting skirt between the internal frame and the external frame rigidly connected to the structure.
L'ensemble des faisceaux tubulaires de surchauffe 5, 6, constitués de tubes répartis selon un réseau triangulaire, est contenu dans le cadre rectangulaire 4, lui-même maintenu à l'intérieur du cadre rigide formé par les plaques latérales 2, 3 reliées rigidement à la virole externe cylindrique. Les faisceaux 5,6 sont constitués par exemple par des tubes en épingle à cheveux, reliés à des plaques tubulaires d'un même côté du plan de la figure. Les faisceaux 5, 6 sont séparés l'un de l'autre par une plaque 11 perforée de trous de passage de la vapeur.The set of
Le cadre interne 4 est relié élastiquement au cadre externe 2, 3 relié rigidement à la virole, par des systèmes de lames souples en équerre 7, 8 formant jupe flexible, dont les petits côtés sont fixés par boulonnage en 9, 10 sur la partie supérieure du cadre 4 et dont les grands côtés viennent appuyer sur les faces internes des plaques 2, 3.The
Ces lames assurent l'étanchéité entre les plaques 2, 3 d'une part, et le cadre 4 d'autre part, et permettent les dilatations et contractions relatives du cadre 4.These blades seal between the
Comme représenté en figure 2, la jupe d'étanchéité comporte de chaque côté de préférence deux lames 7A, 7B, boulonnées ensemble en 9 sur la partie supérieure du cadre 4, et dont la lame interne 7B présente un petit côté plus court que la lame externe 7A, et vient appuyer par son grand côté sur la face interne de cette lame externe.As shown in Figure 2, the sealing skirt preferably comprises on each side two
Claims (1)
- A superheat bundle for a horizontal tube steam separator-superheater, in which the tubes are disposed inside a rectangular frame, the bundle being characterized in that the rectangular frame (4) is not rigidly connected to the structure of the separator-superheater, and in that it is provided with two superposed resilient blades (7A, 7B) along each of its margins forming a generally L-shaped flexible skirt, being fixed (9) at the end of a short side to each margin of the top portion of the frame, the outer blade (7A) bearing via its long side against a side plate (3) which is rigidly connected to said structure, with the short side of the inner blade (7B) being shorter than that of the outer blade, thereby enabling the long side of the inner blade to bear against the inside face of the outer blade.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8900595A FR2641848B1 (en) | 1989-01-19 | 1989-01-19 | OVERHEATING HARNESS FOR VAPOR SEPARATOR-SUPERHEATER WITH HORIZONTAL TUBES |
| FR8900595 | 1989-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0379115A1 EP0379115A1 (en) | 1990-07-25 |
| EP0379115B1 true EP0379115B1 (en) | 1994-05-04 |
Family
ID=9377859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90100717A Expired - Lifetime EP0379115B1 (en) | 1989-01-19 | 1990-01-15 | Superheater tube bundle for a horizontal steam separator-reheater |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5042432A (en) |
| EP (1) | EP0379115B1 (en) |
| JP (1) | JP2761272B2 (en) |
| KR (1) | KR0160984B1 (en) |
| CA (1) | CA2007936C (en) |
| ES (1) | ES2052976T3 (en) |
| FR (1) | FR2641848B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633641B (en) * | 2014-12-25 | 2017-05-03 | 哈尔滨锅炉厂有限责任公司 | Re-heater flue intermediate separation plate sealing device and installation method |
| JP6955949B2 (en) * | 2017-09-29 | 2021-10-27 | 三菱パワー株式会社 | Heat exchanger seal structure and heat exchanger |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1803035A (en) * | 1930-06-30 | 1931-04-28 | Westinghouse Electric & Mfg Co | Heat exchanger |
| FR2116645A5 (en) * | 1970-12-02 | 1972-07-21 | Babcock Atlantique Sa | |
| FR2485144A1 (en) * | 1980-06-19 | 1981-12-24 | Stein Industrie | Sealing strip joining one curved and one flat surface - has W=shaped profile with two contact points maintained during expansion of curved surface |
| US4485069A (en) * | 1982-01-20 | 1984-11-27 | Westinghouse Electric Corp. | Moisture separator reheater with round tube bundle |
| JPH0718532B2 (en) * | 1985-03-20 | 1995-03-06 | 株式会社東芝 | Moisture separation reheater |
| FR2579298B1 (en) * | 1985-03-22 | 1987-05-07 | Stein Industrie | DEVICE FOR DRYING AND OVERHEATING VAPOR BY HEAT EXCHANGE |
| KR910002216B1 (en) * | 1985-03-29 | 1991-04-08 | 가부시끼가이샤 도시바 | Moisture Separation Reheater |
| US4759555A (en) * | 1985-07-25 | 1988-07-26 | Eg&G Pressure Science, Inc. | Split ring seal with slip joint |
| US4714054A (en) * | 1986-04-02 | 1987-12-22 | Westinghouse Electric Corp. | Moisture trap for a moisture separator reheater |
-
1989
- 1989-01-19 FR FR8900595A patent/FR2641848B1/en not_active Expired - Fee Related
-
1990
- 1990-01-15 EP EP90100717A patent/EP0379115B1/en not_active Expired - Lifetime
- 1990-01-15 ES ES90100717T patent/ES2052976T3/en not_active Expired - Lifetime
- 1990-01-16 US US07/465,662 patent/US5042432A/en not_active Expired - Lifetime
- 1990-01-17 CA CA002007936A patent/CA2007936C/en not_active Expired - Fee Related
- 1990-01-18 JP JP2009460A patent/JP2761272B2/en not_active Expired - Lifetime
- 1990-01-18 KR KR1019900000566A patent/KR0160984B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5042432A (en) | 1991-08-27 |
| JPH02263002A (en) | 1990-10-25 |
| FR2641848A1 (en) | 1990-07-20 |
| JP2761272B2 (en) | 1998-06-04 |
| CA2007936A1 (en) | 1990-07-19 |
| KR0160984B1 (en) | 1999-01-15 |
| FR2641848B1 (en) | 1991-08-16 |
| ES2052976T3 (en) | 1994-07-16 |
| KR900011962A (en) | 1990-08-02 |
| EP0379115A1 (en) | 1990-07-25 |
| CA2007936C (en) | 1999-09-28 |
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