EP0808992A2 - Valve à manchon rotatif pour le contrÔle du débit de vapeur d'une turbine à vapeur - Google Patents

Valve à manchon rotatif pour le contrÔle du débit de vapeur d'une turbine à vapeur Download PDF

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Publication number
EP0808992A2
EP0808992A2 EP97108100A EP97108100A EP0808992A2 EP 0808992 A2 EP0808992 A2 EP 0808992A2 EP 97108100 A EP97108100 A EP 97108100A EP 97108100 A EP97108100 A EP 97108100A EP 0808992 A2 EP0808992 A2 EP 0808992A2
Authority
EP
European Patent Office
Prior art keywords
rotating ring
ring
slide valve
steam
valve according
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.)
Granted
Application number
EP97108100A
Other languages
German (de)
English (en)
Other versions
EP0808992B1 (fr
EP0808992A3 (fr
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
ABB Patent GmbH
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 ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0808992A2 publication Critical patent/EP0808992A2/fr
Publication of EP0808992A3 publication Critical patent/EP0808992A3/fr
Application granted granted Critical
Publication of EP0808992B1 publication Critical patent/EP0808992B1/fr
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 valve according to the preamble of claim 1.
  • Radial rotary valves are used to control the steam throughput in a steam turbine. With an immovable fixed ring and a rotating ring concentrically arranged on it, the angular position of which can be changed by a servo motor, it is possible to open or close the control slots provided in both rings more or less.
  • valves are almost exclusively used to control steam withdrawals, although rotary valves are relatively simple in comparison and also have some other advantages.
  • the sliding conditions are problematic, under which the rotating ring on the fixed ring has to be displaceable in each case.
  • the pressure ratios generated by static steam forces are of essential importance, since they are responsible for the friction between the parts sliding on each other. While axial rotary valves are fully affected by this problem, radial rotary valves result from this Static steam forces automatically counteract static relief of the external rotating ring.
  • the object of the invention is therefore to provide a radial rotary valve according to the preamble of claim 1, in which it is possible to optimize the width of the sliding gap and to avoid or at least significantly reduce the risk of clamping the system, which is extremely dangerous for turbine operation.
  • the fixed and rotating ring are basically divided in a radial rotary valve.
  • the upper part of the rotating ring and the lower part of the rotating ring are connected to one another in such a way that they are connected by suitable connecting means the distance from at least two opposite ends of these two ring halves is variable. This is a change in the rotating ring
  • a particularly advantageous development of the subject matter of the invention provides that the connecting means cooperate with at least one spring element which normally holds the two parts of the rotating ring tightly together, but which automatically increases the sliding play under the action of clamping forces.
  • a collar screw engages here, which is screwed into a threaded bushing of the rotating ring half. With its head, the collar screw engages a compression spring, which is supported on a collar of the other rotating ring half.
  • a linkage lever producing the connection to the servo motor ends at a linkage fork, to the fork tines of which an inward-pointing pin is attached and that these two pins are centered on Engage the parting joint in a hole, half of which is recessed in the top and bottom of the bezel.
  • control profiles determine the type of control slots, which in turn belong to the steam channel and are opened or closed according to the direction of rotation of the rotating ring. It is advantageous to give the control profiles an aerodynamic shape.
  • the profile heads are assigned to the fixed ring, while the profile ends lie in the fixed ring. The overall profile then comes into play when the control slot is fully open.
  • FIGS. 1 to 3 there is a radial rotary slide valve 1, 2 with its fixed ring 1 and its external rotary ring 2 arranged concentrically to it. Both the turbine housing 3 and the radial rotary slide valve 1, 2 are divided into upper and lower parts along a joint 16.
  • Control slots 17 which belong to the steam channel 5 and are fully open in the present representations, lie between the control profiles.
  • profile heads 4a and profile ends 4b lie positively on one another and, due to their aerodynamically optimized shape, form only a relatively low resistance for the steam flowing in the steam direction 7 from the steam duct front part 5a to the steam duct rear part 5b. From here, the steam then reaches the rotor blades of the turbine rotor 6.
  • the profile heads 4a can shift relative to the profile ends 4b to such an extent that the control slots 17 are completely closed. With a reduced cross section of the control slots 17, the shape of the control profiles 4 then no longer plays such a large role.
  • a servomotor (not shown), which acts on the rotary ring 2 via a link lever 10, is used for the rotationally movable adjustment of the rotary ring 2 relative to the fixed ring 1.
  • the articulation lever 10 there is an articulation fork 11 with fork tines 11a, 11b, in which inwardly pointing bolts 12 are fastened, which engage in the bores in the rotary ring 2 in the area of the parting joint 16.
  • a tensile force emanating from the servo motor would pull the lower ring part 2b away from the upper ring part 2a, while the conditions would be reversed with a compressive force.
  • the inner diameter of the rotating ring 2 or the gap lying in the parting line 16 would increase.
  • the internal diameter should only be increased if the sliding friction exceeds a predetermined limit value, in order then to reduce this value to an appropriate amount.
  • a correspondingly dimensioned compression spring 15 is provided, which is gripped by the head of a collar screw 14 and pressed against a collar 19 of the rotating ring part 2a. Since the collar screw 14 is screwed into a threaded bushing 13 of the lower ring part 2b, the upper ring part 2a and the lower ring part 2b are pressed by the compression spring 15 with their own spring force held together.

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 Valve à manchon rotatif pour le contrôle du débit de vapeur d'une turbine à vapeur Expired - Lifetime EP0808992B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=7795214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108100A Expired - Lifetime EP0808992B1 (fr) 1996-05-24 1997-05-20 Valve à manchon rotatif pour le contrôle du débit de vapeur d'une turbine à vapeur

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160084156A1 (en) * 2013-05-14 2016-03-24 Imperial Innovations Limited Variable flow-restricting turbine assembly for a turbocharger, corresponding turbocharger engine and vehicle, and operating method

Families Citing this family (6)

* 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.
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 (6)

* 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
DD44684A3 (fr) * 1962-12-22 1966-03-25
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
US5409351A (en) * 1992-05-04 1995-04-25 Abb Patent Gmbh Steam turbine with a rotary slide
DE4425344A1 (de) * 1994-07-18 1996-01-25 Abb Patent Gmbh Drehschieber mit mindestens einem Axialnadeldrehkranz als drehbewegliches Lagerelement

Family Cites Families (4)

* 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
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
KR950006278Y1 (ko) * 1993-01-25 1995-08-05 이성환 대공간용 냉,난방 공조 환기장치

Patent Citations (6)

* 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
DD44684A3 (fr) * 1962-12-22 1966-03-25
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
US5409351A (en) * 1992-05-04 1995-04-25 Abb Patent Gmbh Steam turbine with a rotary slide
DE4425344A1 (de) * 1994-07-18 1996-01-25 Abb Patent Gmbh Drehschieber mit mindestens einem Axialnadeldrehkranz als drehbewegliches Lagerelement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160084156A1 (en) * 2013-05-14 2016-03-24 Imperial Innovations Limited Variable flow-restricting turbine assembly for a turbocharger, corresponding turbocharger engine and vehicle, and operating method
US10161302B2 (en) * 2013-05-14 2018-12-25 Imperial Innovations Limited Variable flow-restricting turbine assembly for a turbocharger, corresponding turbocharger engine and vehicle, and operating method

Also Published As

Publication number Publication date
EP0808992B1 (fr) 2003-03-26
EP0808992A3 (fr) 1999-07-07
US5799927A (en) 1998-09-01
DE19620949A1 (de) 1997-11-27
DE59709597D1 (de) 2003-04-30
JPH1082470A (ja) 1998-03-31

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