EP0005225B1 - Dispositif de séchage et de surchauffe de vapeur - Google Patents

Dispositif de séchage et de surchauffe de vapeur Download PDF

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Publication number
EP0005225B1
EP0005225B1 EP79101215A EP79101215A EP0005225B1 EP 0005225 B1 EP0005225 B1 EP 0005225B1 EP 79101215 A EP79101215 A EP 79101215A EP 79101215 A EP79101215 A EP 79101215A EP 0005225 B1 EP0005225 B1 EP 0005225B1
Authority
EP
European Patent Office
Prior art keywords
steam
casing
separators
water
cylindrical
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
EP79101215A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0005225A1 (fr
Inventor
Roger Bessouat
Jacques Marjollet
Gérard Palacio
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
Original Assignee
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 EP0005225A1 publication Critical patent/EP0005225A1/fr
Application granted granted Critical
Publication of EP0005225B1 publication Critical patent/EP0005225B1/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
    • F22B37/02—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 present invention relates to a steam drying and superheating device, in particular intended for supplying water vapor to a high power turbine, and comprising, inside a cylindrical shell of horizontal axis, arranged parallel to said axis and symmetrically on either side of a longitudinal vertical plane of symmetry of the shell a / in its lower part, a pair of separators eliminating water from the emulsion of water and superheater steam b / in its upper part, a superheater consisting of a bundle of removable tubes.
  • the present invention aims to remedy this drawback, and to provide a steam drying and superheating device which reduces to a very large extent this asymmetric deformation and in any event avoids the appearance of excessive stresses.
  • the device according to the invention is characterized in that it further comprises channels allowing part of the emulsion of water and steam introduced at the base of the shell to rise on either side of the separators and superheaters in the vicinity of the inner surface of the shell, then descend between them to lead to the inlet of the separators in the vicinity of the plane of symmetry.
  • the single figure shows a cross section of the device at the height of the humid steam inlet and superheated steam evacuation pipes, with partial cutaway in the area of the downpipes of the wet steam fraction.
  • the left half of the lower part of the figure represents the section at the height of the humid steam inlet pipe, and the right part a view of the device for removing the water separated towards a purge.
  • the exchanger comprises an external ferrule 1 made of carbon steel resting on cradles such as 1A.
  • the wet steam inlet pipe 2 opens onto a horizontal grid 3.
  • a deflector 4 deflects laterally along arrow 5 the flow of wet steam, so as to prevent it for the most part going towards the central zone separators.
  • Part of the steam passes as represented by arrow 6 towards this central zone, and another part flows laterally as represented by arrow 7.
  • the flow of wet vapor from the central zone then passes through perforated sheets 8, 9, symmetrically inclined on either side of the longitudinal vertical plane of symmetry, which homogenize the distribution of the wet steam between separators 10 constituted for example by staggered rows of parallel corrugated sheet packages.
  • the drying devices formed by the separators are arranged removable tube bundles constituting the superheaters such as 14, the dried steam rising vertically through them.
  • These superheater bundles are held in frames such as 15, fixed by transverse beams 16. They are preferably pinned bundles fixed at a longitudinal end of the device to tubular plates limiting chambers for supplying steam at higher pressure. and evacuation of condensed water.
  • the superheated steam finally rises in the direction of the arrows 17 towards the upper generator of the device from which it is sent for use, for example an expansion turbine, from pipes such as 18.
  • the lower half of the shell 1, in contact with high-speed wet steam, which would otherwise be subject to erosion-corrosion, is provided with an internal coating 19 of stainless steel.
  • Part of the wet steam does not pass directly into the separators and superheaters, but rises along the wall internal of the ferrule, as indicated by arrow 20, so as to maintain the latter at a temperature which is not too high. For this purpose, it circulates above the level of the superheaters between the shell 1 and a cylindrical casing 21 coaxial with the cylindrical shell delimiting the superheated steam chamber. Its speed being lower, it is no longer necessary to provide the internal wall of the shell with a coating of stainless steel.
  • the wet steam then passes through conduits passing through the access passage of the superheated steam to the pipes such as 18 towards the central chimneys such as 22, into which it descends, then into the space 23 between the two series of superheater bundles, provided with tie rods 24 for fixing the transverse beams 16. Finally, it arrives along the path indicated by the arrows 25 in the rows of separators such as 10, where it joins the steam passed through the perforated sheets 8, 9, the spacing between these sheets and the separators being more important at their inlet area, to take account of the additional steam flow.
  • the water stopped in the separators 10 flows down from the latter and collects in troughs such as 26, from where it is brought by channels 27 towards the center of the lower part of the shell.
  • the invention is particularly advantageous for drying and overheating water vapor from an expansion turbine of a large power plant, before it is sent to a lower pressure turbine. But it is suitable for any installation where you want to dry and overheat a steam before sending it to use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Separating Particles In Gases By Inertia (AREA)
EP79101215A 1978-04-28 1979-04-23 Dispositif de séchage et de surchauffe de vapeur Expired EP0005225B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7812634 1978-04-28
FR7812634A FR2424477A1 (fr) 1978-04-28 1978-04-28 Dispositif echangeur de sechage et de surchauffe de vapeur

Publications (2)

Publication Number Publication Date
EP0005225A1 EP0005225A1 (fr) 1979-11-14
EP0005225B1 true EP0005225B1 (fr) 1981-04-15

Family

ID=9207712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101215A Expired EP0005225B1 (fr) 1978-04-28 1979-04-23 Dispositif de séchage et de surchauffe de vapeur

Country Status (9)

Country Link
US (1) US4250841A (it)
EP (1) EP0005225B1 (it)
BE (1) BE875415A (it)
CA (1) CA1125116A (it)
CH (1) CH628132A5 (it)
DE (1) DE2960260D1 (it)
ES (1) ES479969A1 (it)
FR (1) FR2424477A1 (it)
IT (1) IT1118980B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579298B1 (fr) * 1985-03-22 1987-05-07 Stein Industrie Dispositif de sechage et de surchauffe de vapeur par echange de chaleur
DE3522428A1 (de) * 1985-06-22 1987-01-02 Steinmueller Gmbh L & C Vorrichtung zum trocknen und ueberhitzen von dampf
DE3531054C1 (de) * 1985-08-30 1986-11-06 L. & C. Steinmüller GmbH, 5270 Gummersbach Vorrichtung zum Trocknen von Nassdampf und anschliessendem UEberhitzen des getrockneten Dampfes
CN101907375A (zh) * 2008-01-11 2010-12-08 江森自控科技公司 热交换器
DE102017005550A1 (de) 2017-06-13 2018-12-13 Olaf Berberich Verfahren für ein persönliches digitales System(PDS)
CN112090245A (zh) * 2020-10-12 2020-12-18 上海核工程研究设计院有限公司 一种汽水分离再热器用汽水分离单元

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE423309C (de) * 1923-12-25 1925-12-29 Heinrich Lanz Fa Abhitzekessel mit UEberhitzer
US1897722A (en) * 1929-03-30 1933-02-14 Dahmen Karl Sound recording and reproducing means
US3411486A (en) * 1967-04-13 1968-11-19 Foster Wheeler Corp Temperature matching header
US3574303A (en) * 1968-09-30 1971-04-13 Westinghouse Electric Corp Moisture separator reheater for pressurized vapor
FR2224031A6 (it) * 1973-03-30 1974-10-25 Stein Industrie
FR2327487A1 (fr) * 1975-10-07 1977-05-06 Fives Cail Babcock Appareil pour secher et surchauffer de la vapeur
FR2346636A1 (fr) * 1976-03-30 1977-10-28 Stein Industrie Dispositif echangeur de surchauffe de vapeur d'eau a deux enveloppes coaxiales et a axe horizontal

Also Published As

Publication number Publication date
CH628132A5 (fr) 1982-02-15
FR2424477B1 (it) 1982-03-05
IT1118980B (it) 1986-03-03
IT7967900A0 (it) 1979-04-27
EP0005225A1 (fr) 1979-11-14
CA1125116A (fr) 1982-06-08
US4250841A (en) 1981-02-17
BE875415A (fr) 1979-10-09
ES479969A1 (es) 1980-01-01
FR2424477A1 (fr) 1979-11-23
DE2960260D1 (en) 1981-05-07

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