EP0808992B1 - Radialdrehschieber zur Steuerung des Dampfdurchsatzes bei einer Dampfturbine - Google Patents

Radialdrehschieber zur Steuerung des Dampfdurchsatzes bei einer Dampfturbine Download PDF

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Publication number
EP0808992B1
EP0808992B1 EP97108100A EP97108100A EP0808992B1 EP 0808992 B1 EP0808992 B1 EP 0808992B1 EP 97108100 A EP97108100 A EP 97108100A EP 97108100 A EP97108100 A EP 97108100A EP 0808992 B1 EP0808992 B1 EP 0808992B1
Authority
EP
European Patent Office
Prior art keywords
rotary ring
rotary
ring
steam
control
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 - Lifetime
Application number
EP97108100A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0808992A2 (de
EP0808992A3 (de
Inventor
Richard Geist
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.)
Alstom SA
Original Assignee
Alstom 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 Alstom SA filed Critical Alstom SA
Publication of EP0808992A2 publication Critical patent/EP0808992A2/de
Publication of EP0808992A3 publication Critical patent/EP0808992A3/de
Application granted granted Critical
Publication of EP0808992B1 publication Critical patent/EP0808992B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/167—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes of vanes moving in translation
    • 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
    • F01D17/143—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 the shiftable member being a wall, or part thereof of a radial diffuser

Definitions

  • the invention relates to a radial rotary slide valve according to the preamble of claim 1.
  • Radial rotary valves are used to control the steam throughput in a steam turbine. With an immobile fixed ring and one concentric on it rotating ring, its angular position by a servo motor is changeable, it is possible to control slots provided in both rings more or less open or close.
  • a radial rotary valve is known from US Pat. No. 3,127,909, in which by rotating one elastic band opened relative to the rotary valve housing of the rotary valve or can be closed.
  • the elastic band lies on a cylindrical surface of the Housing, which has inlet openings that are distributed over the circumference.
  • the elastic band has corresponding inlet openings.
  • An axial rotary slide valve is known from DE 44 25 344 A1, in which the control profiles are made of profile heads assigned to the rotating ring and profile ends assigned to the fixed ring exist and by their position to each other that belong to a steam channel Open or close control slots.
  • the object of the invention is therefore a radial rotary valve according to the preamble of To create claim 1, in which it is possible to optimize the width of the sliding gap and that Risk of clamping the system, which is extremely dangerous for turbine operation avoid or at least significantly reduce.
  • the turbine housing is split into a top and bottom part by a parting line also fixed and rotating ring in a radial rotary valve basically divided.
  • the rotating ring part and rotating ring part are not rigid, but are connected to one another by suitable connecting means such that the distance from at least two opposite ends of these two ring halves is changeable. This makes it possible to change the inner diameter of the rotating ring, and it can provide the sliding play between the rotating ring and the fixed ring required for rotary movements be adjusted.
  • control profiles determine the type of control slots that in turn lead to the steam channel belong and opened or closed according to the direction of the rotating ring become. It is advantageous to give the control profiles an aerodynamic shape.
  • the profile heads are assigned to the fixed ring, while the profile ends in Fixed ring. The overall profile then comes with a full control slot opening Validity.
  • connecting means that are equipped with appropriate tools, are preferably adjustable by actuating screw elements. This would be it is possible to optimize the required sliding play in each individual case.
  • FIGS. 1 to 3 there is a radial rotary valve 1, 2 with its Fixed ring 1 and its outer rotating ring 2 arranged concentrically to it. Both the turbine housing 3 and the radial rotary valve 1, 2 are along a parting line 16 divided into upper and lower parts.
  • control profiles 4 the profile heads 4a of which are the rotary ring 2 and whose profile ends 4b are assigned to the fixed ring 1.
  • control slots 17 which belong to the steam channel 5 and in the present representations are fully open.
  • profile heads 4a and profile ends 4b form-fit one another and form their aerodynamically optimized shape provides only a relatively low resistance for the in Steam direction 7 flowing through from the steam duct front part 5a to the steam duct rear part 5b Steam. From here, the steam reaches the blades of the Turbine rotor 6.
  • the profile heads 4a can face each other move the profile ends 4b so far that the control slots 17 are completely closed become. With a reduced cross section of the control slots 17, the shape of the Control profiles 4 then no longer play such a large role.
  • A is used for rotatably adjusting the rotating ring 2 relative to the fixed ring 1 Servo motor, not shown, which acts on the rotary ring 2 via a link lever 10.
  • a link fork 11 with fork tines at the end of the link lever 10 11a, 11b, in which inwardly pointing bolts 12 are fastened, which are in the area the parting line 16 engage in corresponding bores in the rotating ring 2.
  • an increase in the inner diameter should only take place if the Dynamic friction exceeds a predetermined limit, then this value to decrease an appropriate amount.
  • an appropriately dimensioned Compression spring 15 is provided, which is gripped by the head of a collar screw 14 and against a collar 19 of the rotating ring upper part 2a is pressed. Since the collar screw 14 in a threaded bush 13 of the rotating ring lower part 2b is screwed in, the rotating ring upper part 2a and lower ring part 2b of the compression spring 15 with its own spring force held together. Only if there is friction between the rotating ring 2 and the fixed ring 1 occurs that exceeds this spring force increases when the link lever is actuated 10 the gap in the area of the parting line 16 so far that the sliding friction drops and a rotary movement becomes possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Sliding Valves (AREA)
EP97108100A 1996-05-24 1997-05-20 Radialdrehschieber zur Steuerung des Dampfdurchsatzes bei einer Dampfturbine Expired - Lifetime EP0808992B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19620949A DE19620949A1 (de) 1996-05-24 1996-05-24 Radialdrehschieber zur Steuerung des Dampfdurchsatzes bei einer Dampfturbine
DE19620949 1996-05-24

Publications (3)

Publication Number Publication Date
EP0808992A2 EP0808992A2 (de) 1997-11-26
EP0808992A3 EP0808992A3 (de) 1999-07-07
EP0808992B1 true EP0808992B1 (de) 2003-03-26

Family

ID=7795214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108100A Expired - Lifetime EP0808992B1 (de) 1996-05-24 1997-05-20 Radialdrehschieber zur Steuerung des Dampfdurchsatzes bei einer Dampfturbine

Country Status (4)

Country Link
US (1) US5799927A (ja)
EP (1) EP0808992B1 (ja)
JP (1) JPH1082470A (ja)
DE (2) DE19620949A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6176300A (en) * 2000-05-23 2001-12-03 Heru Prasanta Wijaya Diaphragmed air valve system
US7097421B2 (en) * 2004-10-08 2006-08-29 United Technologies Corporation Vernier duct blocker
PL2014876T3 (pl) 2007-07-10 2012-11-30 Siemens Ag Suwak obrotowy do sterowania przepływem pary w turbinie parowej
IT1401665B1 (it) * 2010-08-31 2013-08-02 Nuova Pignone S R L Sistema di azionamento per turbomacchina e metodo.
GB201308680D0 (en) * 2013-05-14 2013-06-26 Imp Innovations Ltd A flow control device for a turbocharger
US9803557B2 (en) * 2015-01-20 2017-10-31 United Technologies Corporation Gas turbine engine and blocker door assembly
US10030544B2 (en) * 2015-10-06 2018-07-24 Nuovo Pignone S.R.L. Extracting steam from a turbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127909A (en) * 1962-07-18 1964-04-07 Honeywell Regulator Co Rotary gate valve

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666618A (en) * 1949-07-29 1954-01-19 Bendix Aviat Corp Rotary throttle blade design
DD44684A3 (ja) * 1962-12-22 1966-03-25
US3860357A (en) * 1973-10-01 1975-01-14 Lewis M D Grainger Rotary steam engine
DD202745A1 (de) * 1981-07-08 1983-09-28 Karl Speicher Steuereinrichtung fuer einen dampf- oder gasstrom einer turbomaschine
DE8609300U1 (de) * 1986-04-05 1986-05-22 Viesel, Manfred, 7432 Bad Urach Spannvorrichtung für Schneckenmäntel
US4884944A (en) * 1988-09-07 1989-12-05 Avco Corporation Compressor flow fence
DE4214775A1 (de) * 1992-05-04 1993-11-11 Abb Patent Gmbh Dampfturbine mit einem Drehschieber
KR950006278Y1 (ko) * 1993-01-25 1995-08-05 이성환 대공간용 냉,난방 공조 환기장치
DE4425344C2 (de) * 1994-07-18 2001-05-23 Abb Patent Gmbh Drehschieber mit mindestens einem Axialnadeldrehkranz als drehbewegliches Lagerelement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127909A (en) * 1962-07-18 1964-04-07 Honeywell Regulator Co Rotary gate valve

Also Published As

Publication number Publication date
EP0808992A2 (de) 1997-11-26
EP0808992A3 (de) 1999-07-07
JPH1082470A (ja) 1998-03-31
US5799927A (en) 1998-09-01
DE19620949A1 (de) 1997-11-27
DE59709597D1 (de) 2003-04-30

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