EP2394030A2 - Filtre à vapeur et procédé de réalisation d'un filtre à vapeur - Google Patents

Filtre à vapeur et procédé de réalisation d'un filtre à vapeur

Info

Publication number
EP2394030A2
EP2394030A2 EP10704342A EP10704342A EP2394030A2 EP 2394030 A2 EP2394030 A2 EP 2394030A2 EP 10704342 A EP10704342 A EP 10704342A EP 10704342 A EP10704342 A EP 10704342A EP 2394030 A2 EP2394030 A2 EP 2394030A2
Authority
EP
European Patent Office
Prior art keywords
sieve
steam
screen
vapor
axial direction
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.)
Withdrawn
Application number
EP10704342A
Other languages
German (de)
English (en)
Inventor
Rüdiger BACKASCH
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
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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2394030A2 publication Critical patent/EP2394030A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/14—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces arranged in a star shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
    • 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
    • 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
    • F22B37/263—Valves with water separators
    • 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
    • F22B37/265—Apparatus for washing and purifying steam

Definitions

  • the present invention relates to a vapor sieve and to a process for producing a vapor sieve. Furthermore, the invention relates to the use of such a vapor sieve.
  • Steam sieves are required, for example, in steam turbine plants in order to expel foreign bodies in the steam exhaust ducts, which could otherwise damage the rotor blades and guide vanes of the steam turbine in question.
  • the vapor sieve has a sleeve-like shape with a cylindrical or conical screen surface, which is traversed by the vapor in the radial direction.
  • Such known steam strainers are described, for example, in DE 1 184 355 and DE 1 198 833.
  • steam sieves are often provided for installation in installation environments with more or less fixed or limited space.
  • steam sieves are often structurally integrated in the housing of a steam valve, which serves to control a steam flow of the system.
  • the dependent claims relate to advantageous developments of the invention, which may be provided individually or in combination. The developments of the vapor sieve can be used in an analogous manner for further development of the manufacturing process.
  • a screen surface of substantially cylindrical or conical shape and with a plurality of screen openings for the radial passage of steam is provided, wherein the screen surface is corrugated.
  • the corrugation or unevenness of the sieve surface has the consequence that the area effectively available for sieving the vapor is increased, for example, in particular larger than a contour circumscribed by the vapor sieve (eg cylinder or cone).
  • the vapor sieve has a larger screen area compared to an ideal cylindrical or conical shape.
  • the screen surface is larger by at least a factor of 1.5, preferably by at least a factor of 2, than the cylinder or conical surface circumscribed by the screen surface.
  • the screen surface is corrugated in the circumferential direction of the vapor sieve.
  • the screen surface is corrugated in the axial direction.
  • the screen surface is corrugated or zigzag-shaped corrugated.
  • corrugation can in principle also be be provided in the circumferential direction and / or in the axial direction.
  • an embodiment is preferred in which substantially the entire screen surface is corrugated in a uniform manner, ie, for. B. over the entire screen surface in the circumferential direction and / or axial direction.
  • the screen surface is composed of Siebphilabitesen that are corrugated in different ways, ie z. B. with a circumferentially corrugated Siebphilabites and another, corrugated in the axial direction section.
  • the substantially entire screen surface in a uniform manner corrugated.
  • the steam sieve comprises a plurality of screen plates, which are lined up in a zigzag manner in the circumferential direction of the vapor sieve annularly and connected to each other. This can be done in manufacturing technology simple way a corrugated in the circumferential direction of the screen surface (or Sieb lakeabites).
  • this can be used without further identical screen plates, z. B. may have an identical rectangular contour (to produce, for example, a steam sieve with a cylindrical shape).
  • the vapor sieve comprises a plurality of sieve plate rings, which are lined up in the axial direction of the vapor sieve and connected to each other, wherein at least a portion of the sieve plate rings forms sheet metal surfaces oriented obliquely to the axial direction.
  • a sieve surface or screen surface section
  • z. B. identical screen plate rings are used, for.
  • the screen plates or screen plate rings required in the embodiments described above are preferably made of a metallic material (eg steel).
  • the connection fertil of the screen plates or screen plate rings with each other can, for. B. may be provided as a weld, gluing, screwing etc.
  • all screen plates or screen plate rings on the finished steam sieve are each provided with screen openings for the passage of steam.
  • screen plates provided with screen openings or Siebblechringen can be provided that the screen openings claim at least 40% of the respective sheet metal surface.
  • the vapor sieve is composed of a plurality of vapor sieve components, which each form part of the sieve surface of the vapor sieve, as described, for example, in US Pat. B. is the case, in particular in the above-described embodiments with the screen plates or Siebblechringen, so it is generally preferred, the desired screen openings already in the manufacture of the steam sieve components of these (eg., By water jet cutting, laser cutting, milling, etc.) train. Particularly in the case of a highly corroded sieve surface on the finished steam sieve, in practice it tends to be rather difficult to subsequently form the openings.
  • a plurality of screen plates are lined up in a zigzag manner and connected to each other and / or that a plurality of screen plate rings are lined up in the axial direction and connected to each other, wherein at least a part of the screen plate rings obliquely to the axial direction has oriented sheet surfaces.
  • the vapor sieve according to the invention or a vapor sieve produced according to the invention can for example represent a component of a steam valve and / or be used in a steam turbine plant.
  • FIG. 1 is a schematic plan view of a vapor sieve according to a first embodiment
  • FIG. 2 is a schematic side view of a vapor sieve according to a second embodiment
  • FIG. 3 is a perspective view of a vapor sieve according to a third embodiment
  • FIG. 4 shows a radial section through the vapor sieve of FIG. 3, FIG.
  • FIG. 5 is a perspective view of a vapor sieve according to a fourth embodiment
  • Fig. 6 is an axial section through the steam sieve of
  • Fig. 7 is a perspective (partially sectioned) view of a vapor sieve according to a fifth embodiment
  • 8 and 9 are perspective (partially sectioned) views of a z.
  • Fig. 1 illustrates a vapor sieve 10 having a screen surface 12 of substantially cylindrical shape and having a plurality of screen openings 14 for the radial passage of steam.
  • a steam passage from the outside inwards is symbolized by way of example.
  • the steam sieve 10 could also be used as a sieve in the radial direction from inside to outside.
  • a peculiarity of the steam sieve 10 is that the screen surface 12 does not extend in the circumferential direction exactly along the "ideal" cylindrical shape 16 shown in FIG. 1, but is corrugated in the circumferential direction to increase the effective screen area.
  • the screen surface 12 is zigzag corrugated in the circumferential direction, whereby the screen surface 12 is larger by about a factor of 2 than the cylinder surface 16 circumscribed by the screen surface 12.
  • the screen surface 12 30 outwardly directed teeth (and accordingly also 30th inwardly directed teeth).
  • This number of teeth is of course to be understood only as an example and can be varied in practice. For many applications is low z.
  • B. a preferably evenly distributed over the circumference te number of bulges (and corresponding indentations) of at least 20, for example in a range of 20 to 100.
  • the shape and dimensioning of the bulges and indentations can be varied in practice, as long as this is accompanied by a noticeable increase in the effective sieve area.
  • the corrugation of the screen surface 12 could instead of zigzag also z.
  • B. wave-shaped or otherwise (with at least partially not exactly in the circumferential direction extending surface portions) may be provided.
  • Fig. 2 illustrates a steam sieve 10a having a screen surface 12a which, as in the first embodiment, is again provided with a plurality of screen openings 14a for the passage of steam and has an overall substantially cylindrical shape 16a.
  • the screen surface 12a is not corrugated in the circumferential direction but in the axial direction.
  • this zigzag-like "folding" of the outer surface of the steam strainer 10a again results in an advantageous minimization of the flow losses when using the steam strainer.
  • the screen surface 12a has in the illustrated embodiment 12 radially outwardly directed teeth, plus two "half teeth” at the two ends of the vapor sieve 10a, and accordingly 13 radially inwardly directed teeth.
  • the number, shape and dimensioning of these prongs can again be adapted to the specific application.
  • the screen surfaces 12 and 12a can each be formed from a workpiece or formed by a composition of a plurality of workpieces.
  • FIG. 3 shows a steam sieve 10 b according to a further exemplary embodiment, in which a multi-part screen surface 12 b is corrugated in the circumferential direction.
  • a peculiarity of the steam sieve 10b is that, to form the sieve surface 12b, a plurality of sieve plates 20b having the sieve openings 14b are lined up in a zigzag manner in the circumferential direction in a ring shape and are connected to one another.
  • the individual screen plates 20b were each made of a metallic material (eg, steel sheet with a thickness of approximately 2 to 8 mm), wherein the screen openings 14b were already formed during this production (eg laser-cut).
  • the screen openings 14b occupy about 50% of the respective screen plate surface and are preferably provided (as shown) as elongated, mutually parallel slots (slot width, for example, in the range of a few mm, slot length, for example, a few cm).
  • slot width for example, in the range of a few mm, slot length, for example, a few cm
  • Age- natively could also be a breadboard arrangement z.
  • B. circular holes can be provided.
  • connection of adjacent screen plates 20b is accomplished in the illustrated embodiment by a weld on the axially extending plate edges.
  • the steam sieve 10b at the axial end faces also comprises end rings 22b and 24b, which are also made of a metallic material and connected by welding to the screen plates 20b.
  • end rings 22b and 24b shown here as open rings one of these termination components could also be "closed” as a cover plate.
  • FIG. 4 is a radial sectional view of the vapor sieve 10b and again clearly shows the corrugation of the sieve surface 12b in the circumferential direction. It is clear that the simple rectangular contour of the individual screen plates 20b represents a particularly easy way of realizing the "folding" of the screen surface 12b in practice. Deviating from this, however, it is also possible to use screen plates with a different shape design, in particular non-planar plates.
  • FIG. 5 shows a steam sieve 10c according to a further embodiment, in which a sieve surface 12c with slot-shaped sieve openings 14c is corrugated in the axial direction.
  • the screen surface 12c is made up of a plurality of prefabricated components, which were already provided with the screen openings 14c during their production.
  • These components are a plurality of identically formed screen plate rings 30c each having a conical shape, which, for. B. made of a steel material and are connected to the finished steam sieve 10c by welding together.
  • planar end rings 22c and 24c are again provided and connected to the respectively adjacent screen plate rings 30c.
  • Fig. 6 shows the juxtaposition of the individual screen plate rings 30c and the end rings 22c and 24c again in an axial sectional view. It can be seen that in the illustrated embodiment 16 identical screen plate rings 30c are lined up in an alternating orientation in the axial direction. At the contact points of the screen plate rings 30b with each other and to the end rings 20c and 24c towards these steam sieve components are welded together.
  • the screen plate rings 30c could be used as semi-finished z.
  • other mechanical or thermomechanical methods eg., Water jet cutting, laser cutting, etc.
  • Embodiment screen mesh rings are produced, which are identically dimensioned at their axial end faces (eg., Annular with identical diameter), but between them are designed to form a corrugation (as viewed in the axial direction varying diameter).
  • An example of such a screen plate ring would be z.
  • FIG. 7 shows a steam sieve 10d (partial sectional view) according to a further embodiment.
  • conical sieve plate rings 30d are not lined up in an alternating orientation in the axial direction, but such conical sieve plate rings 30d are lined up alternately with flat sieve plate rings 30d 'in the axial direction.
  • the surface of the flat rings 30d ' is in this case oriented in the radial direction of the vapor sieve 10d.
  • the connection of the components 30d and 30d ' may, for. B. be realized again by a weld.
  • a screen surface 12d which is zigzag-shaped in the axial direction results.
  • the screen surface 12d does not have a radial plane of symmetry.
  • the zigzag form of corrugation is here "sawtooth-shaped".
  • screen openings 14d are introduced only in the conical screen plate rings 30d, but not in the flat screen plate rings 30d '. Due to this peculiarity, the radial passage of steam through the screen surface 12d inevitably results in a certain directional effect in the corresponding axial direction. If the steam sieve 10d, for example, flows through from the outside to the inside, then the steam flowing out on the inside of the sieve surface 12d is directed axially downwards in FIG. 7, which can be advantageous in the case of a removal of the vapor in this direction (eg B. to reduce internal turbulence).
  • connection of the individual screening sheet metal rings required in the exemplary embodiments according to FIGS. 5 and 6 as well as in FIG. 7 can also be achieved by means of a suitable shaping
  • Plug connection be accomplished, so that if necessary can be dispensed with a welding at this point.
  • axial clamping of the stack of screen plate rings formed in the axial direction can also be provided, for example by a screw connection, by means of which the two end-side termination components (eg components 22c and 24c in FIGS Final sieve plate rings 3Od 'in Fig. 7) in the axial direction to each other to be loaded or secured.
  • Figs. 8 and 9 illustrate a conceivable manner of manufacturing a screen plate ring 30e (Fig. 9), e.g. B. for the steam strainers according to FIGS. 5 to 7 can be used.
  • Fig. 8 shows (partially cut) an intermediate product 32e of this production, namely a sheet metal circular ring 32e, the z. B. was provided by separation from a corresponding metal tube and subsequent introduction of screen openings 14e.
  • the screen plate ring 30e shown in Fig. 9 was then produced by finishing (e.g., turning).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un filtre à vapeur (10) présentant une surface de filtrage (12) de forme sensiblement cylindrique ou conique (16) et une pluralité d'ouvertures de filtrage (14) permettant le passage radial de vapeur. Selon l'invention, pour permettre l'obtention d'une résistance à l'écoulement comparativement plus faible d'un filtre à vapeur (10) de ce type, la surface de filtrage (12) est ondulée. En conséquence de l'ondulation de la surface de filtrage (12), la surface réellement disponible pour réaliser le filtrage de la vapeur est accrue, ce qui permet de réduire la résistance à l'écoulement. L'invention concerne également un procédé de réalisation d'un filtre à vapeur (10) de ce type.
EP10704342A 2009-02-03 2010-01-29 Filtre à vapeur et procédé de réalisation d'un filtre à vapeur Withdrawn EP2394030A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910007240 DE102009007240A1 (de) 2009-02-03 2009-02-03 Dampfsieb sowie Verfahren zur Herstellung eines Dampfsiebes
PCT/EP2010/051061 WO2010089250A2 (fr) 2009-02-03 2010-01-29 Filtre à vapeur et procédé de réalisation d'un filtre à vapeur

Publications (1)

Publication Number Publication Date
EP2394030A2 true EP2394030A2 (fr) 2011-12-14

Family

ID=42317365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10704342A Withdrawn EP2394030A2 (fr) 2009-02-03 2010-01-29 Filtre à vapeur et procédé de réalisation d'un filtre à vapeur

Country Status (3)

Country Link
EP (1) EP2394030A2 (fr)
DE (1) DE102009007240A1 (fr)
WO (1) WO2010089250A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077938B4 (de) 2011-06-22 2016-09-22 Siemens Aktiengesellschaft Dampfsiebanordnung und Verwendung einer Dampfsiebanordnung
CN102489059B (zh) * 2011-12-08 2014-04-09 成都华西工业气体有限公司 一种自清洗过滤器
EP2745909A1 (fr) * 2012-12-20 2014-06-25 Siemens Aktiengesellschaft Crible à vapeur
DE102016220636A1 (de) 2016-10-20 2018-04-26 Siemens Aktiengesellschaft Dampfsieb und Verfahren zur Herstellung eines Dampfsiebes
EP3459612A1 (fr) * 2017-09-22 2019-03-27 Siemens Aktiengesellschaft Filtre à vapeur pour vanne de prise de vapeur
CN111482013B (zh) * 2020-03-16 2021-10-29 江苏东方滤袋股份有限公司 一种褶皱除尘滤袋

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH609880A5 (en) * 1976-09-20 1979-03-30 Pierre De Castella Gaseous fluid purifier
WO2000006954A1 (fr) * 1998-07-30 2000-02-10 Minnesota Mining And Manufacturing Company Systeme de filtration pour systemes de chauffage, de ventilation et de refroidissement
WO2000064561A2 (fr) * 1999-04-23 2000-11-02 Kappa Arbeitsschutz & Umwelttechnik Gmbh Dispositif pour extraire des particules liquides et/ou solides finement dispersees d'un courant gazeux
DE102004032609A1 (de) * 2004-07-05 2006-02-09 Kramski Gmbh Bauteil mit ausgeprägter Kühl- und Filterleistung

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Publication number Priority date Publication date Assignee Title
GB290703A (en) * 1927-10-10 1928-05-24 Cockburns Ltd Improvements in or relating to steam separators and the like
DE1184355B (de) 1963-12-03 1964-12-31 Escher Wyss Gmbh Dampfsieb zum Abfangen von Fremdkoerpern
DE1198833B (de) 1964-05-08 1965-08-19 Goerlitzer Maschb Veb Dampfsieb fuer Dampfturbinen
DE2128897C3 (de) * 1971-06-11 1978-11-23 L. & C. Steinmueller Gmbh, 5270 Gummersbach Vorrichtung zum Abscheiden von in einem Gasstrom enthaltener Flüssigkeit
JP3488589B2 (ja) * 1997-02-10 2004-01-19 株式会社共立 エアークリーナ
DE10345925A1 (de) * 2003-10-02 2005-05-04 Opel Adam Ag Partikelfilter für einen Verbrennungsgasstrom mit induktivem Regenerationsverfahren
EP1806168A1 (fr) * 2006-01-04 2007-07-11 Siemens Aktiengesellschaft Tamis à vapeur
JP2007330913A (ja) * 2006-06-16 2007-12-27 Daiwa Kagaku Kogyo Kk 焼酎粕の処理方法及び処理装置
GB0704633D0 (en) * 2007-03-09 2007-04-18 Spirax Sarco Ltd A float operated mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH609880A5 (en) * 1976-09-20 1979-03-30 Pierre De Castella Gaseous fluid purifier
WO2000006954A1 (fr) * 1998-07-30 2000-02-10 Minnesota Mining And Manufacturing Company Systeme de filtration pour systemes de chauffage, de ventilation et de refroidissement
WO2000064561A2 (fr) * 1999-04-23 2000-11-02 Kappa Arbeitsschutz & Umwelttechnik Gmbh Dispositif pour extraire des particules liquides et/ou solides finement dispersees d'un courant gazeux
DE102004032609A1 (de) * 2004-07-05 2006-02-09 Kramski Gmbh Bauteil mit ausgeprägter Kühl- und Filterleistung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010089250A2 *

Also Published As

Publication number Publication date
WO2010089250A3 (fr) 2011-03-24
WO2010089250A2 (fr) 2010-08-12
DE102009007240A1 (de) 2010-08-12

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