EP0051200B1 - Dispositif de répartition d'un mélange de deux phases, en particulier un mélange eau-vapeur dans les chaudières à circulation forcée - Google Patents

Dispositif de répartition d'un mélange de deux phases, en particulier un mélange eau-vapeur dans les chaudières à circulation forcée Download PDF

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Publication number
EP0051200B1
EP0051200B1 EP81108508A EP81108508A EP0051200B1 EP 0051200 B1 EP0051200 B1 EP 0051200B1 EP 81108508 A EP81108508 A EP 81108508A EP 81108508 A EP81108508 A EP 81108508A EP 0051200 B1 EP0051200 B1 EP 0051200B1
Authority
EP
European Patent Office
Prior art keywords
distributor
baffle plate
inlet pipe
drum
diameter
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
Application number
EP81108508A
Other languages
German (de)
English (en)
Other versions
EP0051200A1 (fr
EP0051200B2 (fr
Inventor
Egon Schneider
Wolfgang Dipl.-Ing. Köhler
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.)
Siemens AG
Original Assignee
Kraftwerk Union AG
Siemens AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6115577&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0051200(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kraftwerk Union AG, Siemens AG filed Critical Kraftwerk Union AG
Priority to AT81108508T priority Critical patent/ATE4002T1/de
Publication of EP0051200A1 publication Critical patent/EP0051200A1/fr
Application granted granted Critical
Publication of EP0051200B1 publication Critical patent/EP0051200B1/fr
Publication of EP0051200B2 publication Critical patent/EP0051200B2/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F22B37/62—Component parts or details of steam boilers specially adapted for steam boilers of forced-flow type
    • F22B37/70—Arrangements for distributing water into water tubes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85938—Non-valved flow dividers

Definitions

  • the invention relates to a distributor for two-phase mixtures, in particular water-steam mixtures in once-through boilers, with a distributor drum into which an inlet pipe leads and from which several outlet pipes arranged at an angle to the direction of the inlet pipe start.
  • Such distributors are provided, for example, between different boiler areas, where after a first heating in relatively large pipe cross sections, a transfer to superheater areas with pipes of a larger number but smaller cross sections takes place.
  • the distribution to the drain pipes should be as uniform as possible to avoid negative effects, for example overheating in weakly charged boiler areas. So far, this task has not been completely satisfactorily achieved. Similar distribution problems with uneven two-phase mixtures can also exist in chemical companies, flow laboratories, etc.
  • the distributor drum has a flat baffle plate which is perpendicular to the direction of the inlet pipe and the edge of which leads symmetrically and smoothly to the outlet pipes.
  • baffle plate is a circular disc which is arranged in a rotationally symmetrical distributor drum opposite the cylindrical feed pipe.
  • the baffle plate it is also conceivable to design the baffle plate as a regular polygon with relatively few drain pipes, in the corners of which the drain pipes lie.
  • the edge leading smoothly to the drain pipes is intended to prevent the liquid component evenly distributed on the baffle plate by the deflection from becoming uneven again due to disturbances, for example corners at the edge.
  • the edge can lead obliquely, in particular curved, to the drain pipes.
  • corners with acute-angled walls should be avoided, while corners with obtuse angles of, for example, more than 135 ° are permissible because they practically no longer interfere.
  • a rotationally symmetrical arrangement of the distributor is particularly advantageous for large numbers of pipes with eight or more pipes on a distributor drum.
  • the diameter of the circular disk should be larger than the diameter of the inlet pipe, for example 1.2 to 2 times.
  • the same dimensions are chosen accordingly.
  • the distance between the baffle plate and the mouth of the inlet pipe must be at least so large that the baffle plate has no blocking effect with an undesirably high flow resistance. It is a good value, for example, if the distance is approximately as large as the diameter of the inlet pipe.
  • the invention can be carried out in such a way that the baffle plate and the outlet pipes are arranged in one half and the inlet pipe in the other half of the ball and that the two halves are flanged together or are welded.
  • the side of the baffle plate facing away from the inlet pipe can be adapted to the spherical shape of the distributor drum in order to obtain a uniform support.
  • the plate with the distributor drum which may be stressed by vibrations, as will be explained in more detail later.
  • the baffle plate is formed by a flat wall area of the distributor drum. So here the baffle plate is not an additional component but a specially shaped area of the distributor drum itself. This region can be an integral part of the wall of the distributor drum, which is manufactured as a forged piece, for example. However, it can also be formed by a welded-in floor with a special material if required.
  • the distributor 1 belongs to a once-through boiler with fossil fuel. It sits between a first heating zone charged with feed water and a second heating zone in which further evaporation and / or overheating takes place. For this reason, a water-steam mixture comes from the first heating zone at a pressure of, for example, 90 to 160 bar in an inlet pipe 2 in the direction of arrow 3.
  • the water flows at a speed of, for example, 2 to 6 m / s along the wall of tube 2 while the steam runs at a speed of 15 to 20 m / s primarily in the middle of the circular pipe cross-section.
  • the tube 2 has a diameter d of, for example, 360 mm. It protrudes by approximately this diameter into a spherical distributor drum 4, which is welded together at 7 from two hemispheres 5 and 6.
  • the ball diameter is 700 mm.
  • a flat circular disk is arranged as a baffle plate 10 in a rotationally symmetrical manner with respect to the axis 8 of the inlet pipe 2 shown in dash-dotted lines, which also passes through the center of the ball 4.
  • the baffle plate 10 is exactly opposite the inlet line 2. Their plane forms a right angle with the vertical axis 8 of the inlet pipe 2, the axis 8 passing through the center of the circle of the baffle plate 10.
  • the edge 12 of the baffle plate is welded to the wall of the underside 6 of the drum 4, a smooth transition being created.
  • the angle 14 formed at the weld 13 is far larger than an acute angle at 150 °. This results in a smooth transition from the baffle plate 10 to drain pipes 15, which are arranged symmetrically around the circumference on the lower part 6 of the drum, as shown in FIG. 2.
  • the diameter D of the baffle plate 10, at 460 mm, is more than 1/4 larger than the diameter d of the inlet pipe 2. This ensures that a widening jet, which is indicated by the arrows 16, also has one for the uniform spreading sufficient distance from the edge 12 meets the impact plate 10.
  • the diameter D can also be chosen to be larger, for example 2d.
  • the distance A of the baffle plate 10 from the mouth 18 of the inlet pipe 2 is suitably 1 to 4 times the diameter d.
  • the value is not critical and can also be selected to be smaller, in particular at low flow velocities, for example 0.8d, if this does not cause undesired throttling of the flow.
  • the water of the two-phase mixture supplied asymmetrically in the inlet pipe 2 due to pipe elbows or for other reasons is distributed uniformly over the flat surface of the baffle plate 10. This also results in an even distribution between the eight drain pipes 15 distributed around the edge of the lower part 6. This means that the other areas of a superheater zone (not shown) in the boiler connected to the drain pipes 15 are evenly supplied with liquid and steam in the desired manner, such as is represented by the arrows 19. This prevents local overheating there.
  • Another embodiment of the invention in which the plate opposite the inlet pipe 2 at right angles and symmetrically is formed by the wall of the distributor drum 4 itself, can be thought of as omitting the spherical region 20 below the baffle plate 10.
  • the side of the baffle plate 10 derived from the tube 2 with the hatched area 21 can also be adapted to the spherical shape of the half 6.
  • baffle plate 10 can also be designed and arranged in such a way that its optionally curved edge extends directly to the drain pipes 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (7)

1. Dispositif de répartiton d'un mélange à deux phases, notamment de mélanges d'eau et de vapeur dans des chaudières à circulation forcée, comprenant un tambour de répartition dans lequel arrive un tuyau d'entrée et dont partent plusieurs tuyaux de sortie faisant un angle par rapport à la direction du tuyau d'entrée, caractérisé en ce que le tambour de répartition (4) présente une plaque de rebondissement plane (10) qui est à angle droit avec la direction du tuyau d'entrée (2) et dont le bord (12) mène symétriquement et sans obstacle aux tuyaux de sortie (15).
2. Dispositif de répartition suivant la revendication 1, caractérisé en ce que la plaque de rebondissement (10) est un disque circulaire qui est disposé dans un tambour de répartition (4) présentant une symétrie de rotation par rapport au tuyau d'entrée cylindrique (2).
3. Dispositif de répartition suivant la revendication 2, caractérisé en ce que le diamètre (D) du disque circulaire (10) est supérieur au diamètre (d) du tuyau d'entrée (2).
4. Dispositif de répartition suivant la revendication 2 ou 3, caractérisé en ce que la distance (A) entre la plaque de rebondissement (10) et l'embouchure (18) du tuyau d'entrée (2) est à peu près aussi grande que le diamètre de celui-ci (d).
5. Dispositif de répartition suivant l'une des revendications 1 à 4, ayant un tambour de répartition de forme sphérique, caractérisé en ce que la plaque de rebondissement (10) et les tuyaux de sortie (15) sont disposés dans l'une des moitiés (6) et le tuyau d'entrée (2) dans l'autre moitié (5) de la sphère, et en ce que les deux moitiés (5, 6) sont bridées ou soudées ensemble.
6. Dispositif de répartition suivant la revendication 5, caractérisé en ce que le côté de la plaque de rebondissement (10) qui est éloigné du tuyau d'entrée (2) est adapté à la forme sphérique du tambour de répartition (4).
7. Dispositif de répartition suivant l'une des revendications 1 à 5, caractérisé en ce que la plaque de rebondissement (10) est formée par une région de paroi plane du tambour de répartition (4).
EP81108508A 1980-10-30 1981-10-19 Dispositif de répartition d'un mélange de deux phases, en particulier un mélange eau-vapeur dans les chaudières à circulation forcée Expired EP0051200B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108508T ATE4002T1 (de) 1980-10-30 1981-10-19 Verteiler fuer zweiphasengemische, insbesondere wasser-dampf-mischungen in zwangsdurchlaufkesseln.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3040927A DE3040927C1 (de) 1980-10-30 1980-10-30 Verteiler fuer Zweiphasengemische,insbesondere Wasser-Dampf-Mischungen in Zwangsdurchlaufkesseln
DE3040927 1980-10-30

Publications (3)

Publication Number Publication Date
EP0051200A1 EP0051200A1 (fr) 1982-05-12
EP0051200B1 true EP0051200B1 (fr) 1983-06-29
EP0051200B2 EP0051200B2 (fr) 1988-07-20

Family

ID=6115577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108508A Expired EP0051200B2 (fr) 1980-10-30 1981-10-19 Dispositif de répartition d'un mélange de deux phases, en particulier un mélange eau-vapeur dans les chaudières à circulation forcée

Country Status (8)

Country Link
US (1) US4593653A (fr)
EP (1) EP0051200B2 (fr)
JP (1) JPS57104005A (fr)
AT (1) ATE4002T1 (fr)
CA (1) CA1167737A (fr)
DE (1) DE3040927C1 (fr)
DK (1) DK149717C (fr)
ZA (1) ZA817499B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123261A1 (de) * 1981-06-12 1982-12-30 Volkswagenwerk Ag, 3180 Wolfsburg Vorrichtung zur gleichmaessigen verteilung einer 2phasen-stroemung
DE3145573C2 (de) * 1981-11-17 1985-03-28 L. & C. Steinmüller GmbH, 5270 Gummersbach Massenstromverteileinrichtung zum Aufteilen eines Wasser-Dampf-Gemisches
JPH0612165B2 (ja) * 1985-09-06 1994-02-16 三菱重工業株式会社 気液二相流体分配器
US4907619A (en) * 1988-06-15 1990-03-13 Delta Conveying Inc. Flow proportioner apparatus
US6945266B2 (en) * 2001-10-19 2005-09-20 Metallic Power, Inc. Manifold for fuel cell system
US6679280B1 (en) * 2001-10-19 2004-01-20 Metallic Power, Inc. Manifold for fuel cell system
DE10330659B3 (de) * 2003-07-08 2004-12-23 Gea Energietechnik Gmbh Abdampfleitung für Dampfkraftanlagen
MX2010012015A (es) * 2008-05-06 2010-12-01 Fluor Tech Corp Metodos y aparatos para separar un flujo de fases multiples.
US8726663B2 (en) * 2010-01-05 2014-05-20 General Electric Company Combined cycle system employing phase change material
EP2712663A1 (fr) 2012-10-01 2014-04-02 Basf Se Appareil de procédé, notamment colonne, comprenant une arrivée horizontale pour un fluide, notamment écoulements à deux phases et unité de déviation pour le fluide
CN109340758B (zh) * 2018-09-03 2020-08-21 江西国财中洁新能环境产业有限公司 一种高效的垃圾热解装置
CN111895846B (zh) * 2020-06-11 2021-12-07 中海石油气电集团有限责任公司 一种圆盘式气液两相流体均布装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US629520A (en) * 1898-12-10 1899-07-25 Robert Ludwig Mond Method of heating liquids.
US1599726A (en) * 1920-12-08 1926-09-14 Donald V H Smith Tubulous steam generator
US1650632A (en) * 1925-04-30 1927-11-29 Gen Electric Electrode steam boiler
US1887147A (en) * 1929-01-28 1932-11-08 Int Comb Eng Corp Regulating system for high capacity boilers
US2239895A (en) * 1938-12-15 1941-04-29 Riley Stoker Corp Waste heat boiler
US2299849A (en) * 1940-07-19 1942-10-27 Thomas J Rees Steam generating plant
US3048373A (en) * 1957-08-30 1962-08-07 Phillips Petroleum Co Heat exchange apparatus and method
GB871561A (en) * 1959-04-21 1961-06-28 Andre Huet Improvements in or relating to fluid distributing systems
FR1419832A (fr) * 1964-10-21 1965-12-03 Siemens Ag Dispositif de distribution pour des systèmes tubulaires de chaudières à circulation forcée
US3338218A (en) * 1965-10-22 1967-08-29 Foster Wheeler Corp Once-through boiler downcomer flow distribution system
FR1505376A (fr) * 1966-06-03 1967-12-15 Du Pont Appareil perfectionné de division d'un courant de fluide visqueux
FR2210273A5 (fr) * 1972-12-06 1974-07-05 Gutehoffnungshuette Sterkrade
US3899000A (en) * 1973-09-20 1975-08-12 Atlantic Richfield Co Liquid-vapor distributor
JPS577989Y2 (fr) * 1977-07-12 1982-02-16
US4333629A (en) * 1980-03-11 1982-06-08 Pepsico, Inc. Floating manifold for multi-cavity injection mold

Also Published As

Publication number Publication date
JPH0220883B2 (fr) 1990-05-11
EP0051200A1 (fr) 1982-05-12
DK477281A (da) 1982-05-01
EP0051200B2 (fr) 1988-07-20
ZA817499B (en) 1982-10-27
US4593653A (en) 1986-06-10
ATE4002T1 (de) 1983-07-15
JPS57104005A (en) 1982-06-28
DK149717C (da) 1987-03-30
DK149717B (da) 1986-09-15
DE3040927C1 (de) 1981-10-15
CA1167737A (fr) 1984-05-22

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