EP3014150A1 - Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape - Google Patents

Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape

Info

Publication number
EP3014150A1
EP3014150A1 EP14786813.7A EP14786813A EP3014150A1 EP 3014150 A1 EP3014150 A1 EP 3014150A1 EP 14786813 A EP14786813 A EP 14786813A EP 3014150 A1 EP3014150 A1 EP 3014150A1
Authority
EP
European Patent Office
Prior art keywords
valve
contact surface
seat contact
valve seat
valve cover
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Withdrawn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
EP14786813.7A
Other languages
German (de)
English (en)
Inventor
Ralf Bell
Isabell Böer
Thomas Fischer
Giuseppe Gaio
Raimund Heinze
Markus Legenbauer
Damian Razowski
Thomas Riedel
Stanislaw Ruda
Ralf Ziwes
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
Priority to EP14786813.7A priority Critical patent/EP3014150A1/fr
Publication of EP3014150A1 publication Critical patent/EP3014150A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/02—Controlling, e.g. stopping or starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K25/00—Details relating to contact between valve members and seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements

Definitions

  • the invention relates to a valve for shutting off and / or regulating the flow of fluid streams comprising a valve housing, a arranged in the valve housing valve diffuser with a valve seat contact surface, and a Ven ⁇ til emotions which is arranged movably in the valve housing, wherein the valve body and the Valve seat contact surface at least when the flow of Fluidströ ⁇ men are in contact with each other. Furthermore, the invention relates to a method for finishing such a valve.
  • Such valves generally include a Ventilge ⁇ housing and arranged within the valve housing valve diffuser flows through the incoming steam.
  • the mass flow is adjusted by means of a valve body, which is designed to be movable in the direction of the valve diffuser. In a completely closed position, the valve body abuts a valve seat contact surface which is connected to the valve diffuser. In an open position a flow passage ⁇ surface is formed between the valve body and the valve seat contact surface which is directly correlated with the mass flow through the valve.
  • valve body When closed, the valve body abuts against the valve seat contact surface and forms a contact surface.
  • This contact surface is more heavily loaded by the joints of the valve body when closing. Therefore, apart from signs of wear caused by steam erosion, this area is also subject to wear due to mechanical loads.
  • the contact area Gepan ⁇ cert on the valve seat contact area which for example, by Stellite.
  • the surface of the valve seat is often required due to solid-state erosion and steam erosion.
  • a first object of the invention is therefore to provide an improved valve which avoids the above-mentioned problems.
  • Another, second task is the specification of a method for finishing such a valve.
  • the first object is achieved with the specification of a valve for shutting off and / or regulating the flow of fluid streams, comprising a valve housing, a arranged in the valve housing valve diffuser with a valve seat contact surface, and a valve body which is movably disposed in the valve housing, wherein the Valve ⁇ body and the valve seat contact surface, at least in the off ⁇ blocking the flow of fluid flows in a contact with each other, and wherein the valve body also has a valve cover with a valve cover thickness.
  • the valve cover with the valve cover thickness, which is provided with a material addition and the valve body together form a first, in particular maximum lift and that at a Abtragung the worn portion of the valve seat contact surface, the valve cover thickness, so ablatable, so that the first, in particular maximum stroke equal ⁇ or remains the same except for minor deviations remains and / or the valve housing, the Ventilsitzfulnessflä ⁇ che, the valve cover with the valve cover thickness and Ven ⁇ til emotions, which is provided with a material addition, together form a first, in particular maximum lift and that at a removal of the worn portion of the valve seat contact surface of the valve body so abradable that the first, in particular maximum stroke, remains the same or remains the same
  • the second object is achieved by specifying ei ⁇ nes for post-processing of a valve, with a valve body, and with a valve seat contact surface, which consists of a reinforcing alloy, in particular chromium-based, and wherein the valve body, also a valve cover, with egg ⁇ ner valve cover thickness which is ver see with a material addition ⁇ which consists of any one of the above claims, wherein said valve seat contact surface becomes worn in use, so that at least one area is corresponds with a wear and wherein at least the worn region of the Ven ⁇ tilsitzbib constitutional and wherein the Ventilkör ⁇ also has a valve cover with a valve cover thickness ⁇ , with which the valve body is attached to a valve housing and wherein the valve housing, the valve seat contact surface, the valve cover with the valve cover thickness and the valve body together a first, in particular maxi form stroke and that when removing the worn portion of the valve seat contact surface, the valve cover thickness is removed so that the first, in particular maximum stroke
  • valve body also has a valve cover with a valve cover thickness with which the valve body is attached to a valve housing and wherein the Ventilgeophu ⁇ se, the valve seat contact surface, the valve cover with the valve cover thickness and the valve body, which is provided with a Ma ⁇ material addition together form a first, in particular maximum stroke and that when removing the worn portion of the valve seat contact surface of the valve body is removed so that the first, in particular maximum stroke remains the same or at least remains almost constant.
  • valve such that it has a valve seat contact surface made of a reinforcing alloy which is in contact with the valve body.
  • a valve seat contact surface made of the reinforced material eg stellite
  • This valve seat contact surface is designed ge ⁇ ometrisch so that the area of the contact surface is provided when new with addition of material.
  • the Materi ⁇ alzugabe is removed during a revision. The material removal can be done in several revisions.
  • This valve seat contact surface can therefore be repaired independently of findings after each revision, ie the worn area of the valve seat contact surface can be removed independently of findings after each revision. This saves a lot of time as tests are not considered necessary from the outset.
  • the valve body also has a valve cover with a valve cover thickness.
  • the valve cover is designed as a flange. Before ⁇ geous enough, the valve cover is in the valve cover thickness reducible. This can be done, for example, by grinding.
  • valve housing, the valve seat contact surface, the Ventilde- disgust with a valve cover thickness and the valve body together form a first, in particular maximum stroke, wherein when ablating the worn portion of the valve seat contact surface, the valve cover thickness is ablatable so that the first, in particular maximum stroke remains the same or at least almost the same.
  • valve housing which is ablatable Ven ⁇ tilsitztive representation, which together form the valve cover with a Ventilde ⁇ ckeldicke and the valve body comprises a first, in particular maximum stroke, and wherein at removal of the worn portion of the valve seat contact surface of the valve body can, for the first, in particular ma ⁇ maximum stroke remains the same or at least almost constant.
  • the position of the valve cover can be adjusted if necessary to adjust the stroke of the valve to the post-processed contour of the valve seat. This is done, for example, by mechanical processing of the valve cover whose Ventilde ⁇ ckeldicke (ie, the wall thickness of the valve cover) in Neuzu ⁇ stand is made correspondingly thicker. Alternatively or in addition to the post-processing of the valve cover, the removal of material to adjust the stroke can also be done on the valve body. The flow through the valve thus remains the same, ie the flow coefficient remains the same. This guarantees, for example, safe operation of the system in which the valve is used.
  • the valve seat contact surface of a Le ⁇ alloy on a cobalt-chromium base is a cobalt-chromium base.
  • the valve seat contact surface consists of stellite. This is due to its high wear and temperature resistance ⁇ speed, especially for use in power plants.
  • the valve seat contact surface is designed as an exchange ⁇ bare socket. After a maximum number of processes, material removal is no longer possible. For this case, then the replacement of the socket with the appropriate adjustment of the valve cover, so that an adjustment of the stroke is possible again. Thus, a complete replacement of the diffuser or the valve seat is thus not necessary here. Likewise, it is not necessary to carry out the dismantling of the complete valve from the turbine. This reduces the service life of such a valve.
  • the armor of the valve body can be performed, for example, usually only in a smaller thickness.
  • a jack on the other hand can be executed entirely from a reinforcing layer and thus allows the post-processing of the contour without an applied Panze ⁇ tion, as would be the case with the valve body, complete ERS ⁇ wear.
  • valve is provided in a system and the post-processing is carried out in a revision of the system.
  • the FIGURE shows a cross-sectional view of a erfindungsge ⁇ MAESSEN valve 1.
  • the valve 1 comprises a valve housing 2 and within the valve housing 2 a substantially rotati ⁇ onssymmetrisch trained valve diffuser 3.
  • an axis of symmetry 4 is located.
  • the valve diffuser 3 is substantially rotationally symmetrical to this symmetry axle 4 is formed.
  • Within the valve diffuser 3 a conically shaped inner shell region 6 is formed, through which a steam with comparatively high temperature and high pressure flows during operation.
  • the valve diffuser 3 is fixed to the housing 2.
  • the Venetildiffusor 3 comprises a valve seat contact surface 8, which is arranged at the Ventildiffusorrotary 7 and is designed for contacting with a valve body 5.
  • the valve body 5 and the valve seat contact surface 8 are in contact with each other at least at the shutoff of the flow of fluid streams.
  • the valve seat contact surface 8 is now composed of egg ⁇ ner reinforcing alloy, in particular chromium-based, wherein said valve seat contact surface 8 is subject to a United ⁇ wear during operation so that at least a portion is formed with a tear.
  • a revision at least the worn region of the valve seat contact surface will now ⁇ wear 8 bring.
  • the valve seat contact surface 8 is executed ⁇ out that a removal is possible. That is, when new, a material allowance is provided, which is shown in FIG. Thus, the worn areas can be removed in several revisions. Thus, an exchange of the valve or the valve diffuser 3 is no longer necessary.
  • the valve body 5 also has a valve cover 13 with a valve cover thickness 14. Through the valve cover 13, the valve body 5 may be secured to the valve housing 2.
  • the valve cover 13 may be designed as a flange. Thereby, the valve cover 13 in the valve cover thickness 14 is easily reducible, i. abradable.
  • the valve housing 2, the valve seat contact surface 8, the Ven ⁇ tildeckel 13 with a valve cover thickness 14 and the valve ⁇ body 5 together form a first, in particular a maximum stroke.
  • the valve cover thickness 14 can be removed so that this first, in particular maximum, stroke remains the same or at least remains virtually the same. That is, the worn area is, for example, at a location 16 around a NEN amount 17 removed, the valve cover 13 is just ⁇ if reduced by an amount 17 to a wall thickness 20. So ⁇ remains the first, in particular maximum stroke of the same or almost the same. In this case, the valve cover thickness 14 can be reduced by mechanical processing.
  • the Ventilde ⁇ ckel 13 is therefore performed correspondingly thicker in the valve cover thickness 14 in the new state.
  • the valve cover 13 can be ground, for example. This means that at the same time after each removal of material in the valve seat contact surface 8, the position of the Ventilde ⁇ Article 13 is adjusted if necessary to adjust the stroke of the valve 1 to the post-processed contour.
  • the valve body 5 in a different place, for example, be reduced directly at the contact surface with the valve seat contact surface 8 in order to produce the ers ⁇ th, and in particular maximum stroke can again.
  • the valve seat contact surface 8 may be an alloy on a cobalt-chromium basis, in particular a stellite.
  • valve seat contact surface 8 is configured as an exchangeable bushing (not shown).
  • the bushing now has contact with the valve body 5. After a maximum number of processing material removal from the socket is no longer possible. For this case, then the replacement of the socket with the appropriate adjustment of the valve cover 13, so that an adjustment of the first, in particular maximum stroke is again possible.
  • the processing of the clock Ventilsitzkon ⁇ surface 8 and the valve cover 13 and the valve body 5 does not require the dismantling of the complete valve from the turbine. According to the invention, replacement of a complete housing 2 and / or diffuser 3 is therefore no longer necessary.
  • the revision can be better planned in advance, as the mecha ⁇ African machining always takes place regardless of the findings.
  • the valve seat contact surface 8 can therefore be repaired after each re ⁇ vision regardless of findings. This saves a great deal of time since tests for the finding are classified as unnecessary from the outset and are therefore no longer necessary. A complex, expensive and health-endangering renovation is eliminated. If the valve seat contact surface 8 of a replaceable sleeve, this can be simplified to be ⁇ exchanged without long downtime.
  • the armoring of a valve body of the prior art can usually be carried out only in a small thickness.
  • valve seat contact surface 8 can be performed completely with ver ⁇ strengthened material and thus allows the post-processing of the contour without any applied armor, as would be the case with the valve body of the prior art, completely remove.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne une soupape (1), selon le préambule de la revendication 1, une surface de contact du siège de soupape (8) comprenant un alliage renforcé, en particulier à base de chrome, la surface de contact du siège de soupape (8) étant soumise, en fonctionnement, à une usure, de telle manière qu'il se forme au moins une zone présentant une usure, et un boîtier de soupape (2), la surface de contact du siège de soupape (8), un couvercle de soupape (13) présentant une épaisseur (14) de couvercle de soupape, qui est pourvu d'une addition de matériau, et le corps de soupape (5) formant, conjointement, une première course, notamment maximale; lors d'une ablation de la zone usée de la surface de contact du siège de soupape (8), l'épaisseur (14) de couvercle de soupape peut être érodée, de façon que la première course, notamment maximale demeure constante ou ne soit constante qu'à de faibles écarts, et/ou le boîtier de soupape (2), la surface de contact du siège de soupape (8), le couvercle de soupape (13) présentant l'épaisseur (14) de couvercle de soupape, et le corps de soupape (5), qui est pourvu d'une addition de matériau, forment, conjointement, une première course, notamment maximale et, lors d'une ablation de la zone usée de la surface de contact du siège de soupape (8), le corps de soupape (5) peut être érodé, de façon que la première course, notamment maximale, demeure constante ou ne soit constante qu'à de faibles écarts.
EP14786813.7A 2013-09-24 2014-09-23 Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape Withdrawn EP3014150A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14786813.7A EP3014150A1 (fr) 2013-09-24 2014-09-23 Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13185752.6A EP2851587A1 (fr) 2013-09-24 2013-09-24 Soupape pour l'arrêt et/ou la régulation du débit de flux de fluide et procédé de réusinage d'une telle soupape
PCT/EP2014/070217 WO2015044125A1 (fr) 2013-09-24 2014-09-23 Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape
EP14786813.7A EP3014150A1 (fr) 2013-09-24 2014-09-23 Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape

Publications (1)

Publication Number Publication Date
EP3014150A1 true EP3014150A1 (fr) 2016-05-04

Family

ID=49303727

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13185752.6A Withdrawn EP2851587A1 (fr) 2013-09-24 2013-09-24 Soupape pour l'arrêt et/ou la régulation du débit de flux de fluide et procédé de réusinage d'une telle soupape
EP14786813.7A Withdrawn EP3014150A1 (fr) 2013-09-24 2014-09-23 Soupape pour la fermeture et/ou le réglage du débit d'écoulement de fluides, et procédé pour le traitement ultérieur d'une telle soupape

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13185752.6A Withdrawn EP2851587A1 (fr) 2013-09-24 2013-09-24 Soupape pour l'arrêt et/ou la régulation du débit de flux de fluide et procédé de réusinage d'une telle soupape

Country Status (3)

Country Link
US (1) US20160208930A1 (fr)
EP (2) EP2851587A1 (fr)
WO (1) WO2015044125A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180216738A1 (en) * 2017-02-02 2018-08-02 Fisher Controls International Llc Control valves having integral trim
CA3095117A1 (fr) * 2018-03-28 2019-10-03 S.P.M. Flow Control, Inc. Extremite de fluide a siege de soupape integre
US11828380B2 (en) 2021-07-23 2023-11-28 Fisher Controls International Llc Valve bodies and methods of manufacturing the same

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US2258230A (en) * 1939-09-14 1941-10-07 Gen Electric Valve
US2297535A (en) * 1941-04-11 1942-09-29 Westinghouse Electric & Mfg Co Governing valve for prime movers
US3080144A (en) * 1959-12-24 1963-03-05 Blaw Knox Co Anti-scoring valve
US3724813A (en) * 1971-05-07 1973-04-03 Masoneilan Int Inc Valve with removable seating means
US3979105A (en) * 1973-10-01 1976-09-07 Rockwell International Corporation Valve with improved flow passage
FR2461864A1 (fr) * 1979-07-19 1981-02-06 Centre Techn Ind Mecanique Soupape anti-vibrations
US4444220A (en) * 1981-02-02 1984-04-24 Willis Division Of Smith International, Inc. High pressure valve
US4413646A (en) * 1981-05-01 1983-11-08 Exxon Research And Engineering Co. Streamline coal slurry letdown valve
DE3137710A1 (de) * 1981-09-22 1983-04-07 Kraftwerk Union AG, 4330 Mülheim Stellventil, insbesondere zur steuerung und regelungvon dampfturbinen
DE3137687A1 (de) * 1981-09-22 1983-04-07 Kraftwerk Union AG, 4330 Mülheim Stellventil, insbesondere zur steuerung und regelung von dampfturbinen
US4383553A (en) * 1981-10-19 1983-05-17 Exxon Research And Engineering Co. Visbreaker letdown valve
JPS61201965A (ja) * 1985-03-04 1986-09-06 Hitachi Ltd 耐浸食性蒸気弁
BR9300292A (pt) * 1993-01-27 1994-08-16 Petroleo Brasileiro Sa Aperfeiçoamento em sede de válvulas de orifício
US6666433B1 (en) * 2000-06-27 2003-12-23 Dresser-Rand Company Grooved valve seat with inlay
US7137612B2 (en) * 2003-09-04 2006-11-21 Whittaker Corporation High recovery metering valve
US7004448B2 (en) * 2004-07-19 2006-02-28 M-I Llc Trim insert for choke assembly
US8051874B2 (en) * 2006-09-13 2011-11-08 Fisher Controls International Llc Replaceable outlet liner for control valve
EP2843273A1 (fr) * 2013-08-29 2015-03-04 Siemens Aktiengesellschaft Diffuseur de soupape pour une soupape

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Title
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See also references of WO2015044125A1 *

Also Published As

Publication number Publication date
US20160208930A1 (en) 2016-07-21
WO2015044125A1 (fr) 2015-04-02
EP2851587A1 (fr) 2015-03-25

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