EP1062408B1 - Installation de turbine a vapeur - Google Patents

Installation de turbine a vapeur Download PDF

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Publication number
EP1062408B1
EP1062408B1 EP99915504A EP99915504A EP1062408B1 EP 1062408 B1 EP1062408 B1 EP 1062408B1 EP 99915504 A EP99915504 A EP 99915504A EP 99915504 A EP99915504 A EP 99915504A EP 1062408 B1 EP1062408 B1 EP 1062408B1
Authority
EP
European Patent Office
Prior art keywords
steam
inlet valve
rotary cylinder
housing
turbine plant
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
EP99915504A
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German (de)
English (en)
Other versions
EP1062408A1 (fr
Inventor
Paul Girbig
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 EP1062408A1 publication Critical patent/EP1062408A1/fr
Application granted granted Critical
Publication of EP1062408B1 publication Critical patent/EP1062408B1/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
    • F01D17/141—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 steam turbine system, the Steam turbine is connected upstream of a steam collection space, wherein to control the introduction of steam into the steam collecting space a steam inlet valve is provided.
  • a steam turbine plant is usually used for generation electrical energy or to drive a machine used. This is done in an evaporator circuit working medium guided in the steam turbine system, usually a water-water / steam mixture, in an evaporator evaporated. The steam generated thereby relaxes while performing work in the steam turbine and then becomes one Capacitor or a working machine. That in the condenser Condensed working medium is then fed through a feed water pump fed back to the evaporator.
  • nozzle group control Control valves controlling the introduction of Steam in a steam collection room.
  • the opening and closing of the Control valves are usually made by a spindle system or by a hydraulic drive.
  • the control valves With a spindle system the control valves are arranged in a in the steam collecting space Suspended beam that can be moved by two spindles is.
  • the control valves can be hydraulic single drives exhibit. Actuate the hydraulic individual drives usually the individual control valves via a linkage.
  • control valves require particularly high actuating forces, as they close against the steam flow direction are. High positioning forces in turn slow down the positioning speed of the control valves and thus have an adverse effect on the control goods of the control valves.
  • spindles of the spindle system or the linkage of the hydraulic Systems usually through a stuffing box passed through the housing of the steam collection space. There actuation of the respective by the corresponding stuffing boxes Nozzle group regulation takes place, there are losses of steam cannot be avoided with a majority of Stuffing boxes can be particularly large.
  • FR-A-341 546 is a controller of the control valves by means of electromagnetic regulated vapor pressure known.
  • the invention is therefore based on the object of a steam turbine system of the type mentioned above with a steam inlet valve specify that allows a particularly high level of regulation and the loss of steam is particularly low.
  • the steam inlet valve the steam turbine plant as a shut-off device in has a housing arranged rotating roller, a in Steam inlet provided in the housing via a in the rotating roller arranged channel with a steam outlet provided in the housing is connectable.
  • the invention is based on the consideration that a particular high control quality for a steam inlet valve Steam turbine plant is accessible by this for special low actuating forces is designed. Particularly low Actuating forces are possible if the steam inlet valve is such is designed to perform positioning movements in one direction the steam flow direction are largely avoided. This can be reached in a particularly simple manner by the steam inlet valve not for linear, but rather for rotary positioning movements is designed. This is as a shut-off device of the steam inlet valve is provided a rotating roller. At a such an arrangement is also the number of required Seals particularly low. The steam inlet valve thus has particularly low losses of steam.
  • the channel is advantageously on the surface of the rotary roller guided.
  • a steam inlet valve designed in this way is namely particularly flexible to meet different requirements adaptable.
  • the Channel length can be that the steam inlet even at different Positions of the rotating roller can be connected to the steam outlet is.
  • the rotating roller enclosing housing made in one piece.
  • the Rotary roller through a single access opening in the housing introduced, which is arranged at a free end of the rotary roller End plate is sealed from the environment.
  • the end plate of the steam inlet valve is advantageously executed such that they on the housing of the rotating roller facing side has a crenellated profile. At the Sealing point emerging steam must then be a special one long way to the surroundings, reducing the risk of unwanted steam discharge kept particularly low is.
  • the steam inlet valve advantageously has a spring system that mechanically pretensions the rotary roller.
  • the steam inlet valve for particularly short Fast closing tents suitable and closes in the event of a failure of the system controlling the rotary movement of the rotary roller independently. This results in steam losses due to an accident preventable.
  • the steam to be introduced into the steam collecting space can - depending according to operating mode and conditions - particularly strong impurities exhibit. So that the steam inlet valve against such Impurities is insensitive, it advantageously has a rotating roller, the surface of which consists of a ceramic material. Because a ceramic material has a particularly low liability for contamination of the Vapor and is particularly insensitive to large ones Temperature changes.
  • the steam inlet valve can ensure steam quality with a permanent high-frequency interference signal as Actuating signal are applied, a smooth movement of the Valve ensures.
  • the channel advantageously has one through one Starting point and by an end point of the channel with respect defined the arc angle of the turning roller axis, the larger is as 180 °. In other words, the channel extends over more than half the circumference of the turning roller. In this configuration there are many combinations of one Channel cross section with a steam inlet and / or outlet possible.
  • the steam inlet valve a plurality of channels on the Surface of a common rotating roller are arranged. in this connection is a steam inlet with one assigned to it Steam outlet can be connected via one channel each.
  • the targeted One or more channels can be opened.
  • the arc angles of the channels are advantageously such configured that in a first position of the rotary roller steam flows through the first channel and in a second Position of the rotating roller of the first and a second channel of Steam can flow through.
  • the steam inlet valve opens the channels gradually, which gives a particularly high degree of flexibility when feeding Steam is possible in the steam collection room.
  • the steam inlet valve is advantageously to a steam plenum connected that of a steam turbine of a steam turbine plant is connected upstream. Because of its special high regulation quality and its particularly low risk of Loss of steam is the steam inlet valve for this particularly suitable.
  • the advantages achieved with the invention are in particular in that in the steam turbine system with one Steam collection space upstream due to steam inlet valve the rotary roller provided as a shut-off device the risk of Steam losses are kept particularly low. Also points the steam inlet valve has particularly low actuating forces because it is designed for rotary positioning movements. This points the steam inlet valve has a particularly high actuating speed and thus a particularly high level of regulation. The special low actuating forces also allow the Use of an electrical control mechanism for the steam inlet valve. So there is no hydraulic Adjustment system possible, which is always a due to the hydraulic oils potential source of fire in the steam turbine plant.
  • the steam turbine system 2 comprises a steam turbine 4 with coupled generator 6 and in a water-steam cycle 8 one of the steam turbine 4 downstream Condenser 10 and a steam generator 12.
  • the steam turbine 4 consists of a first pressure stage or a high pressure part 4a and a further level or a middle and Low-pressure part 4b, the generator via a common shaft 14 6 drive.
  • the steam generator 12 is on the steam outlet side at the steam inlet 18 of the high pressure part 4a of the steam turbine 4 connected.
  • the steam outlet 20 of the high pressure part 4a of the steam turbine 4 is via an overflow line 22 to the steam inlet 24 of the medium and low pressure part 4b of the steam turbine 4th connected.
  • the steam outlet 26 of the medium and low pressure part 4b of the steam turbine 4 is on via a steam line 28 connected the capacitor 10. This is via a feed water line 30, in which a feed water pump 32 and a Feed water tank 34 are connected to the steam generator 12 connected so that a closed water-steam cycle 8 arises.
  • the steam turbine system 2 is used to control the introduction of steam D into the high pressure part 4a and the medium and low pressure part 4b of the steam turbine 4 designed.
  • the steam turbine system 2 is used to control the introduction of steam D into the high pressure part 4a and the medium and low pressure part 4b of the steam turbine 4 designed.
  • the connecting the steam generator 12 and the steam turbine 4 Steam line 36 in a steam inlet valve 38 the input side the as the housing of the turbine of the high pressure part 4a Steam turbine 4 upstream steam collection chamber 40 is.
  • a steam inlet valve is in the overflow line 22 42 switched, the input side as the housing of Turbine of the medium and low pressure part 4b of the steam turbine 4 trained steam collection space 44 is connected upstream.
  • the steam inlet valves 38, 42 are approximately identical in construction and by means of an electrical control signal with a high frequency Interference signal is applied, controllable. Therefor are the steam inlet valves 38, 42 each via a control line 46 or 48 connected to a control unit 50.
  • the steam inlet valve 38 directly attached to the vapor collection space 40.
  • the steam inlet valve 38 passes through the steam inlet valve 38 the steam line 36 forth steam D.
  • the steam inlet valve 38 has three steam inlets 54 and three in its housing 52 Steam outlets 56.
  • the steam outlets 56 of the steam inlet valve 38 each open into a chamber 40a, 40b or 40c of the steam collecting space 40.
  • a turbine 58 is arranged, one rotor 60 and a number of turbine blades 62 includes.
  • the steam inlet valve 42 is approximately the same Way on as the housing of the turbine of the medium and low pressure part 4b of the steam turbine 4 formed steam collecting space 44 arranged.
  • the steam inlet valve 38 includes a housing 52.
  • the one-piece Housing 52 is three steam inlets 54 and three steam outlets 56 arranged.
  • a rotating roller 64 is in the housing 52 arranged, the surface 66 of a crenellated profile has, which is not shown in Figure 3, and consists of ceramic material K.
  • the rotating roller 64 is can be introduced into the housing 52 via an access opening 68. With its end 64a arranged inside the housing 52 the rotating roller 64 in a conical arranged in the housing 52 trained bearing element 70 stored. Not in the case 52 bearing end 64b of the rotating roller 64 is an end plate 72 arranged. As shown in detail in FIG.
  • the rotating roller 64 has three channels 80 in its surface 66, 82 and 84 on, through which the steam inlets 54 with them assigned steam outlets 56 can be connected. there tapers each in a manner not shown Cross section of channels 8C, 82 and 84 along the steam path.
  • the arc angle 86, 88, 90 are chosen so that they each are greater than 180 °.
  • steam can flow through channel 80 and
  • the channel 80 is in a second position of the rotating roller 64 and the channel 82 through which steam D can flow and in a third
  • the position of the rotary roller 64 is the channel 80, the channel 82 and the channel 84 through which steam D can flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Sliding Valves (AREA)
  • Taps Or Cocks (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Claims (12)

  1. Installation (2) de turbine à vapeur, en aval de la turbine (4) à vapeur de laquelle est prévue une chambre (40, 44) de collecte de la vapeur, une vanne (38, 42) d'entrée de la vapeur étant raccordée du côté de l'entrée à la chambre (40, 44) de collecte de la vapeur et étant destinée à commander l'introduction de vapeur (D) dans la chambre (40, 44) de collecte de la vapeur, caractérisée en ce que la vanne (38, 42) d'entrée de la vapeur comprend un rouleau (64) tournant servant d'organe d'obturation et monté dans une enveloppe (52) et une entrée (54) pour la vapeur prévue dans l'enveloppe (52) peut communiquer par un canal (80) ménagé dans le rouleau (64) tournant avec une sortie (56) pour la vapeur, qui est prévue dans l'enveloppe (52).
  2. Installation (2) de turbine à vapeur suivant la revendication 1, dans laquelle le canal (80) de la vanne (38, 42) d'entrée de la vapeur passe le long de la surface (66) du rouleau (64) tournant.
  3. Installation (2) de turbine à vapeur suivant la revendication 1 ou 2, dans laquelle l'enveloppe (52) de la vanne (38, 42) d'entrée de la vapeur est réalisée en une seule pièce, le rouleau (64) tournant étant introduit dans l'enveloppe (52) par une seule ouverture (68) d'accès et une chambre intérieure de l'enveloppe (52) étant rendue étanche vis à vis de l'environnement par une plaque (72) d'extrémité montée à l'extrémité (64b) libre du rouleau (64) tournant.
  4. Installation (2) de turbine à vapeur suivant la revendication 3, dans laquelle la plaque (72) d'extrémité de la vanne (38, 42) d'entrée de la vapeur a, du côté (72a) tourné vers l'enveloppe (62) du rouleau (64) tournant, un profil (74) en forme de créneau.
  5. Installation (2) de turbine à vapeur suivant la revendication 3 ou 4, dans laquelle l'extrémité (64a) disposée à l'intérieur de l'enveloppe (52) du rouleau (64) tournant de la vanne (38, 42) d'entrée de la vapeur est montée dans un élément (70) formant palier qui est prévu dans l'enveloppe (52) et qui est conique.
  6. Installation (2) de turbine à vapeur suivant l'une des revendications 1 à 5, dans laquelle le rouleau (64) tournant de la vanne (38, 42) d'entrée de la vapeur est précontraint mécaniquement par un système (78) à ressort.
  7. Installation (2) de turbine à vapeur suivant l'une des revendications 1 à 6, dans laquelle la surface (66) du rouleau (64) tournant de la vanne (38, 42) d'entrée de la vapeur est en un matériau (K) céramique.
  8. Installation (2) de turbine à vapeur suivant l'une des revendications 1 à 7, dans laquelle il est appliqué un signal parasite permanent au signal de réglage de la vanne (38, 42) d'entrée de la vapeur.
  9. Installation (2) de turbine à vapeur suivant l'une des revendications 2 à 8, dans laquelle le canal (80) de la vanne (38, 42) d'entrée de la vapeur a une section transversale qui se rétrécit.
  10. Installation (2) de turbine à vapeur suivant l'une des revendications 1 à 9, dans laquelle it est prévu sur la surface (66) du rouleau (64) tournant de la vanne (38, 42) d'entrée de la vapeur une multiplicité de canaux (80, 82, 84), respectivement une entrée (54) pour la vapeur pouvant communiquer par chaque canal (80, 82, 84) avec une sortie (56) pour la vapeur qui lui est associée.
  11. Installation (2) de turbine à vapeur suivant l'une des revendications 1 à 10, dans laquelle l'angle (86, 88, 90) d'arc respectif des canaux (80, 82, 84), cet angle étant défini par un point (86a, 88a, 90a) initial et par un point (86b, 88b, 90b) final du canal (80, 82, 84) de la vanne (38, 42) d'entrée de la vapeur par rapport à l'axe du rouleau tournant, est supérieur à 180°.
  12. Installation (2) de turbine à vapeur suivant la revendication 11, dans laquelle les angles (86, 88, 90) d'arc des canaux (80, 82, 84) de la vanne (38, 42) d'entrée de la vapeur sont choisis de façon à ce que, dans une première position du rouleau (64) tournant, de la vapeur (D) puisse passer dans un premier canal (80) et, dans une deuxième position du rouleau (64) tournant, de la vapeur (D) puisse passer dans le premier canal (80) et dans un deuxième canal (82).
EP99915504A 1998-03-11 1999-03-05 Installation de turbine a vapeur Expired - Lifetime EP1062408B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19810580 1998-03-11
DE19810580A DE19810580A1 (de) 1998-03-11 1998-03-11 Dampfeinlaßventil
PCT/DE1999/000603 WO1999046483A1 (fr) 1998-03-11 1999-03-05 Installation de turbine a vapeur

Publications (2)

Publication Number Publication Date
EP1062408A1 EP1062408A1 (fr) 2000-12-27
EP1062408B1 true EP1062408B1 (fr) 2002-08-07

Family

ID=7860538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99915504A Expired - Lifetime EP1062408B1 (fr) 1998-03-11 1999-03-05 Installation de turbine a vapeur

Country Status (7)

Country Link
US (1) US6336330B1 (fr)
EP (1) EP1062408B1 (fr)
JP (1) JP4287592B2 (fr)
CN (1) CN1119504C (fr)
AT (1) ATE221954T1 (fr)
DE (2) DE19810580A1 (fr)
WO (1) WO1999046483A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021928A1 (de) * 2005-06-02 2007-11-15 Lutz Giechau Vorrichtung zur Erzeugung mechanischer Energie
DE102005040380B3 (de) * 2005-08-25 2006-07-27 Gea Energietechnik Gmbh Kondensationsverfahren
EP1813779A1 (fr) 2006-01-31 2007-08-01 Siemens Aktiengesellschaft Vanne de turbine à vapeur
CN107905858B (zh) * 2017-11-17 2023-06-30 中国大唐集团科学技术研究院有限公司火力发电技术研究所 末级安全流量监测与控制系统及方法
EP3489470A1 (fr) * 2017-11-22 2019-05-29 Siemens Aktiengesellschaft Système de commande de turbine pour une turbine à vapeur et turbine à vapeur

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE158534C (fr) *
FR341546A (fr) * 1904-03-23 1904-08-10 Postel Vinay Ets Perfectionnements à la commande électrique des valves de turbines
DE582436C (de) * 1931-03-08 1933-08-15 Siemens Schuckertwerke Akt Ges Einrichtung zum schnellen Regeln von Kraftmaschinen
DE1773770U (de) * 1953-01-27 1958-09-11 Licentia Gmbh Steuerorgan fuer hydraulisch betaetigte schnellschlussvorrichtungen, insbesondere bei dampf- oder gasturbinen.
AT250400B (de) * 1964-08-13 1966-11-10 Simmering Graz Pauker Ag Steuerventil für Kraftmaschinen
FR1542987A (fr) * 1967-10-20 Conception nouvelle des robinets à boisseau
US3602261A (en) * 1969-03-27 1971-08-31 Westinghouse Electric Corp Stream turbine control valve structure
US4103592A (en) * 1975-12-19 1978-08-01 General Electric Company Valve operator
US4040600A (en) * 1976-01-15 1977-08-09 General Electric Company Shut-off valve
US4881718A (en) * 1987-11-27 1989-11-21 Jamesbury Corporation Ball control valve
US6070605A (en) * 1999-01-25 2000-06-06 General Electric Co. Steam turbine valve disk vibration reducer

Also Published As

Publication number Publication date
JP2002506167A (ja) 2002-02-26
US6336330B1 (en) 2002-01-08
DE59902264D1 (de) 2002-09-12
JP4287592B2 (ja) 2009-07-01
CN1297509A (zh) 2001-05-30
WO1999046483A1 (fr) 1999-09-16
DE19810580A1 (de) 1999-09-16
CN1119504C (zh) 2003-08-27
EP1062408A1 (fr) 2000-12-27
ATE221954T1 (de) 2002-08-15

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