EP0075212A2 - Soupape de réglage en particulier pour la commande et la régulation de turbines à vapeur - Google Patents

Soupape de réglage en particulier pour la commande et la régulation de turbines à vapeur Download PDF

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Publication number
EP0075212A2
EP0075212A2 EP82108334A EP82108334A EP0075212A2 EP 0075212 A2 EP0075212 A2 EP 0075212A2 EP 82108334 A EP82108334 A EP 82108334A EP 82108334 A EP82108334 A EP 82108334A EP 0075212 A2 EP0075212 A2 EP 0075212A2
Authority
EP
European Patent Office
Prior art keywords
valve
valve housing
flow
diffuser
housing
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.)
Ceased
Application number
EP82108334A
Other languages
German (de)
English (en)
Other versions
EP0075212A3 (fr
Inventor
Otto Dipl.-Ing. Von Schwerdtner
Hans Dipl.-Ing. Judtih
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union 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 Kraftwerk Union AG filed Critical Kraftwerk Union AG
Publication of EP0075212A2 publication Critical patent/EP0075212A2/fr
Publication of EP0075212A3 publication Critical patent/EP0075212A3/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines

Definitions

  • the invention relates to a control valve, in particular for controlling and regulating steam turbines, according to the preamble of patent claim 1.
  • Control valves of this type which are known, for example, from Siemens magazine 41 (1967), supplement “Steam turbines of great output", pages 75 and 76, are intended, on the one hand, to ensure a desired throttle characteristic by changing the stroke position of the valve body and, on the other hand, in the fully open, i.e. cause the lowest possible gradient losses when driven.
  • the adjustment forces should be kept small with regard to the limits of the dimensions and the performance of the associated actuators. In the single-seat valves mostly used in steam turbine construction, the adjusting forces are reduced by the selection of a relatively small diameter of the valve body. In the narrowest cross section behind the valve seat, high flow velocities result even when the control valve is fully open.
  • the invention is therefore based on the object of providing a control valve in which the alternating forces which excite the valve body to vibrate are minimized.
  • the invention is based on the knowledge that the flow behind the throttle point and in the diffuser can be stabilized by a swirl and that such a swirl of the flow can be imposed by an arrangement of the inlet connector offset relative to the longitudinal axis of the valve housing.
  • the centrifugal effect emanating from the swirl forces the flow outwards and prevents the flow from detaching from the diffuser wall.
  • the strength of the swirl imposed on the flow must be limited.
  • the eccentric offset of the inlet connector is in the order of 10-50% of its inside diameter.
  • valve housing 1 of the control valve is only partially shown.
  • the steam flow indicated by arrows S enters the valve housing 1 through a lateral inlet connection 2, flows through an annular cross section formed between the cone lip 31 of a valve body 3 and a valve seat 4 and emerges downwards from the valve housing 1, the outlet region being designed as a diffuser 5 is.
  • the cross-sectional profile of the control valve can be interpreted as a convergent-divergent channel, the valve seat 4 being located in the convergent channel part in front of the narrowest cross-section f and the divergent channel part being formed by the diffuser 5.
  • the contour of the convergent-divergent channel in the area of the valve seat 4, the narrowest cross section f and the initial area of the divergent channel part is formed by a valve seat bushing 6 made of wear-resistant material and inserted into the valve housing 1.
  • the valve body 3 is designed as a piston and is guided in the axial direction within a valve guide 7 designed as a cylinder and fixedly arranged in the valve housing 1.
  • the stroke position of the valve body 3, which determines the throttling of the steam flow S, is adjusted in the direction of the longitudinal axis L of the valve housing 1 by means of a valve spindle 8 which is positively connected to the valve body 3 by an actuator not shown in the drawing.
  • the steam flow S behind the valve seat 4 and in the diffuser 5 should be stabilized. This is achieved with the help of a swirl imposed on the steam flow S, which is indicated by a helical arrow D.
  • the swirl D prevents detachment from the wall of the diffuser 5 by the centrifugal action exerted on the steam flow S.
  • the center axis M of the inlet connector 2 is not directed in the radial direction toward the longitudinal axis L of the valve housing 1, as is usually the case, but is oriented in such a way that that there is an offset designated e relative to the longitudinal axis L.
  • This eccentric offset e then results in an asymmetrical inflow with respect to the valve housing 1 and thus the swirl D shown in FIG. 1.
  • the strength of the swirl D is limited to avoid additional gradient losses. This limitation takes place via a corresponding dimensioning of the eccentric offset e, which in the exemplary embodiment shown is approximately 15% of the inner diameter D i of the inlet connector 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)
EP82108334A 1981-09-22 1982-09-09 Soupape de réglage en particulier pour la commande et la régulation de turbines à vapeur Ceased EP0075212A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813137702 DE3137702A1 (de) 1981-09-22 1981-09-22 Stellventil, insbesondere zur steuerung und regelung von dampfturbinen
DE3137702 1981-09-22

Publications (2)

Publication Number Publication Date
EP0075212A2 true EP0075212A2 (fr) 1983-03-30
EP0075212A3 EP0075212A3 (fr) 1983-07-06

Family

ID=6142333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108334A Ceased EP0075212A3 (fr) 1981-09-22 1982-09-09 Soupape de réglage en particulier pour la commande et la régulation de turbines à vapeur

Country Status (3)

Country Link
EP (1) EP0075212A3 (fr)
JP (1) JPS5865905A (fr)
DE (1) DE3137702A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093653A1 (fr) * 2002-05-03 2003-11-13 Alstom Technology Ltd Turbine a vapeur
WO2007024138A1 (fr) 2005-08-23 2007-03-01 Typhonix As Dispositif d'etrangleur
US8622075B2 (en) 2008-01-25 2014-01-07 Typhonix As Fluid flow control valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402516C2 (de) * 1993-07-05 1997-11-20 Voith Gmbh J M Vorrichtung und Verfahren zur verstopfungsfreien Drosselung einer fluiden Suspensionsströmung
DE29708459U1 (de) * 1997-05-13 1997-07-17 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Schnellreinigungsventil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE391407C (de) * 1924-03-06 English Electric Co Ltd Ventil zur Steuerung des Durchtritts von unter Druck stehender Fluessigkeit in einen nicht mit Fluessigkeit gefuellten Raum
FR726825A (fr) * 1931-01-13 1932-06-03 Soupape
US2598187A (en) * 1948-10-08 1952-05-27 Swartwout Co Valve
US3037519A (en) * 1958-12-19 1962-06-05 Mcevoy Co Globe valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE550090C (de) * 1930-11-26 1932-05-13 Johann Zagorski Dr Ing Ventilgehaeuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE391407C (de) * 1924-03-06 English Electric Co Ltd Ventil zur Steuerung des Durchtritts von unter Druck stehender Fluessigkeit in einen nicht mit Fluessigkeit gefuellten Raum
FR726825A (fr) * 1931-01-13 1932-06-03 Soupape
US2598187A (en) * 1948-10-08 1952-05-27 Swartwout Co Valve
US3037519A (en) * 1958-12-19 1962-06-05 Mcevoy Co Globe valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003093653A1 (fr) * 2002-05-03 2003-11-13 Alstom Technology Ltd Turbine a vapeur
US7223065B2 (en) 2002-05-03 2007-05-29 Alstom Technology Ltd Steam turbine
WO2007024138A1 (fr) 2005-08-23 2007-03-01 Typhonix As Dispositif d'etrangleur
CN101242904B (zh) * 2005-08-23 2012-09-26 泰福尼克斯公司 阻风门装置
US8770228B2 (en) 2005-08-23 2014-07-08 Typhonix As Choke valve device
US8622075B2 (en) 2008-01-25 2014-01-07 Typhonix As Fluid flow control valve

Also Published As

Publication number Publication date
EP0075212A3 (fr) 1983-07-06
DE3137702A1 (de) 1983-05-05
JPS5865905A (ja) 1983-04-19

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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PUAL Search report despatched

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Effective date: 19830727

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18R Application refused

Effective date: 19840729

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JUDTIH, HANS, DIPL.-ING.

Inventor name: VON SCHWERDTNER, OTTO, DIPL.-ING.