EP2161416B1 - Rotordrehvorrichtung für eine Dampfturbine - Google Patents

Rotordrehvorrichtung für eine Dampfturbine Download PDF

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Publication number
EP2161416B1
EP2161416B1 EP09166715.4A EP09166715A EP2161416B1 EP 2161416 B1 EP2161416 B1 EP 2161416B1 EP 09166715 A EP09166715 A EP 09166715A EP 2161416 B1 EP2161416 B1 EP 2161416B1
Authority
EP
European Patent Office
Prior art keywords
rotor
turning device
steam turbine
drive pinion
exposed
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.)
Not-in-force
Application number
EP09166715.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2161416A2 (de
EP2161416A3 (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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to PL09166715T priority Critical patent/PL2161416T3/pl
Publication of EP2161416A2 publication Critical patent/EP2161416A2/de
Publication of EP2161416A3 publication Critical patent/EP2161416A3/de
Application granted granted Critical
Publication of EP2161416B1 publication Critical patent/EP2161416B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/34—Turning or inching gear
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F01D25/26—Double casings; Measures against temperature strain in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/60—Control system actuates means
    • F05D2270/64—Hydraulic actuators

Definitions

  • the invention relates to a rotor rotating device for a steam turbine and a steam turbine having a rotor and the rotor rotating device, with which the rotor is drivable.
  • a steam turbine as used for example in a large-scale industrial chemical plant or in a power plant, is fed with live steam, which has a temperature of for example 500 ° C.
  • the rotor of the steam turbine is in contact with the live steam during operation of the steam turbine, so that the rotor is heated up accordingly when starting up the steam turbine.
  • the supply from the live steam to the steam turbine is inhibited, so that after the rotor has run out, the rotor cools slowly to an ambient temperature level.
  • the rotor has such a large mass, so that, as soon as the rotor has run down when leaving, the rotor bends because of its high temperature. This sagging has such a strong imbalance when restarting that the steam turbine must be switched off.
  • the remedy is provided by a rotor turning device with which, when the steam turbine is shut down, it is slowly further rotated immediately after the rotor has come to a standstill, so that the bending of the rotor is prevented.
  • a conventional rotor turning device is in Fig. 4 shown, with a rotor shaft 1 is driven.
  • the rotor shaft 1 has at one of its longitudinal ends a drive pinion 3, which is provided with an external toothing 4.
  • the rotor turning device has a pivot pinion 24 which can be coupled with the external toothing 4 of the drive pinion 3. Further, the rotor rotating device on a gear 25 and an electric motor 26, with which the pivot pinion 24 is driven.
  • the rotor turning device has a pivot arm 15 which is pivotally mounted on the bearing housing 2 with a Schwenkarmlager 16.
  • a lever 17 is attached to the pivot arm 15 on which a lifting piston 19 engages with a push rod 20 at a joint 21.
  • a displacement force can be applied to the pivoting arm 15, whereby the pivoting pinion 24 can be moved towards the drive pinion 3 and finally brought into engagement with the external toothing 4 of the drive pinion 3.
  • the electric motor 26 If the electric motor 26 is supplied with energy, it drives the gearbox 25, which in turn rotates the swivel pinion 4. Characterized the drive pinion 3 is driven, whereby the rotor shaft 1 is rotated about its axis of rotation 23.
  • the rotor shaft 1 can be rotated, so that a bending of the rotor shaft 1 is prevented due to temperature differences in the shaft.
  • the disadvantage however, that the rotor turning device is complex and space consuming in the construction.
  • the rotor turning device on many items, so that the rotor turning device is cost and maintenance intensive.
  • US 4643637 A is a remote-controlled latch for a gear disclosed.
  • US 3021719 A describes a device for transmitting a slow rotation to a rotor.
  • Object of the invention is to provide a rotor rotating device for a steam turbine and a steam turbine with a rotor which is driven by the rotor rotating device, wherein
  • the rotor turning device is simple, space-saving and inexpensive in construction.
  • the rotor rotating device according to the invention for a steam turbine whose rotor has a drive pinion on which the Ro-tor can be driven with the rotor rotating device, has a hydraulically driven external gear motor having at least two externally meshing gears and the housing einhausendes housing, and a coupling device with which the rotor rotating device, when mounted on the steam turbine, with the drive pinion can be coupled wherein the housing has a recess with which one of the gear wheels is exposed such that the exposed gear is engaged with the rotor gear coupled to the drive gear, whereby the drive gear is driven by the exposed gear.
  • the steam turbine according to the invention has a rotor and the rotor rotating device, wherein the rotor has a drive pinion with external teeth, in which the exposed gear with its teeth is engageable.
  • the rotor turning device according to the invention has a construction which is more compact than a conventional rotor turning device. Further, the rotor rotating device according to the invention has less moving components than a conventional rotor turning device, so that the rotor rotating device according to the invention is safe and easy to operate and inexpensive to purchase and low maintenance. Furthermore, advantageously, the rotor rotating device with the drive pinion can already be coupled, if the rotor has not come to a standstill, for example when the steam turbine is shut down. In addition, with the rotor rotating device according to the invention an advantageously large torque can be transmitted to the rotor and the rotor can be rotated at an advantageously high speed, which would not be achievable with a conventional rotor turning device.
  • the drive pinion does not necessarily have to be provided at a free end of the rotor in the rotary rotor device according to the invention, whereby, for example, a clutch for driving a machine can advantageously be provided on each of the two shaft ends of the rotor.
  • the housing preferably has a Hydraulikfluid micturinal through which hydraulic fluid for driving the gears hydraulic fluid is flowable.
  • the external gear motor is further preferably configured such that when the hydraulic fluid flows through the hydraulic fluid flow passage in the one direction, the exposed gear rotates in one direction and when the hydraulic fluid flows in the other direction through the hydraulic fluid flow channel, the exposed gear engages in the one direction other direction turns.
  • the uncovered gear is preferably, when the rotor rotating device is mounted on the steam turbine, movable with the clutch device radially to the drive pinion.
  • both are in engagement with their external teeth, with the exposed gear being in the plane of the drive sprocket.
  • the exposed gear is to be moved away from the drive pinion so far that the exposed gear is no longer engaged with the drive pinion.
  • the exposed gear is applied radially when engaging the drive pinion, it is harmless if either the exposed gear or the drive pinion are not at a standstill and / or their external teeth are not exactly on the gap. Rather, the exposed gear and / or the drive pinion can rotate during engagement, so that the external teeth of the exposed gear and the drive pinion can engage.
  • the coupling device preferably has a drive device and a pivoting arm, which is pivotably mounted on a Schwenkarmlager and at one longitudinal end the external gear motor is mounted, wherein the drive means on the pivot arm for pivoting the same engages.
  • the drive device preferably has a reciprocating piston which can be operated with hydraulic fluid. The radial movement of the external gear motor can be easily accomplished with the swivel arm, so that the exposed gearwheel can be coupled to the drive gearwheel or decoupled from the drive gearwheel during a corresponding swiveling movement of the swivel arm.
  • the steam turbine to a hydraulic fluid circuit, with which the external gear motor and the reciprocating piston is operable.
  • the hydraulic fluid circuit can be provided, with which both the external gear motor and the hydraulic piston can be operated.
  • a separate drive for driving the exposed gear need not be provided for the uncovered gear, whereby the rotor rotating device according to the invention advantageously has only a few components.
  • the recess preferably engages when the exposed gear meshes with the drive pinion, the drive pinion. Further, it is preferable that on the bearing housing, the rotor rotating device is supported and a stopper is provided, with which, when the rotor rotating device abuts the stop, the position of the rotor rotating device is set in the coupling state. As a result, it is prevented by means of the stopper that both the exposed gear is pressed too strongly onto the drive pinion and / or the housing strikes against the recess on the drive pinion. Thus, wear of the external gear motor when engaging in the drive pinion is advantageously prevented.
  • a steam turbine has a rotor shaft 1 and a bearing housing 2. At a shaft end of the rotor shaft 1, a drive pinion 3 is attached, which is provided with an external toothing 4. Fixedly mounted on the bearing housing 2 is a rotor turning device 5.
  • the rotor turning device 5 has an external gear motor 6, which has in each case a front-toothed drive gearwheel 7 and a counter gearwheel 8.
  • the gears 7 and 8 are arranged side by side meshing with each other in a housing 9.
  • bearings 10 for pivot bearings of the gears 7 and 8 are provided in the housing 9 .
  • a hydraulic oil inlet channel 11 and a hydraulic oil outlet channel 12 is formed, wherein the hydraulic oil outlet channel 12 is formed the hydraulic oil outlet channel 11 and in alignment with this.
  • both the hydraulic oil inflow passage 11 and the hydraulic oil discharge passage 12 are formed parallel to the tangential direction of the gears 7 and 8 in the range of their meshing.
  • the housing 9 has a recess 13 which exposes the drive gear 7 at a portion of its outer toothing in a region which is arranged facing away from the counter gear 8.
  • the recess 13 is dimensioned so that the toothing 14 of the drive gear 7 can be in engagement with the external toothing 4 of the drive pinion 3 when the drive pinion 3 engages in the recess 13.
  • the rotor turning device 5 has a swivel arm 15 with a swivel arm bearing 16 which, fixed to the bearing housing 2, supports the swivel arm 15 in a pivotable manner.
  • the external gear motor 6 is fastened with its housing 9.
  • Fig. 1 and 2 Seen to the left of the Schwenkarmlager 16 of the pivot arm 15 is extended with a lever 17 which has a handle 18 at its free-standing longitudinal end.
  • the rotor rotating device 5 has a reciprocating piston 19 which is mounted on the bearing housing 2. Coupled to the reciprocating piston 19, a push rod 20 is provided, which acts on a hinge 21 on the lever 17.
  • a thrust can be transmitted to the lever 17 via the push rod 20 and the joint 21, which in Fig. 1 and 2 in the vertical direction. Due to the thrust force, the swing arm 15 is pivoted about the swing arm bearing 16 so that when the pushing force is downward, the outside gear motor 6 moves away from the drive gear 3 and when the pushing force is upward, the outside gear motor 6 moves toward the drive gear 3 becomes.
  • the pushing force can be applied manually to the handle 18 on the lever 17.
  • the thrust force is to be applied to the lever 17 so that the external gear motor 6 is lifted from the drive pinion 3, whereby the external gear 4 of the drive pinion 3 with the teeth 14 of the drive gear 7 is disengaged. Furthermore, then the drive pinion 3 is no longer engaged with the recess 13, so that the rotor shaft 1 can either be at a standstill or optionally can rotate by the operation of the steam turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gear Transmission (AREA)
EP09166715.4A 2008-09-09 2009-07-29 Rotordrehvorrichtung für eine Dampfturbine Not-in-force EP2161416B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09166715T PL2161416T3 (pl) 2008-09-09 2009-07-29 Urządzenie do obracania wirnika turbiny parowej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008046347A DE102008046347A1 (de) 2008-09-09 2008-09-09 Rotordrehvorrichtung für eine Dampfturbine

Publications (3)

Publication Number Publication Date
EP2161416A2 EP2161416A2 (de) 2010-03-10
EP2161416A3 EP2161416A3 (de) 2013-04-17
EP2161416B1 true EP2161416B1 (de) 2014-09-17

Family

ID=41508409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09166715.4A Not-in-force EP2161416B1 (de) 2008-09-09 2009-07-29 Rotordrehvorrichtung für eine Dampfturbine

Country Status (4)

Country Link
EP (1) EP2161416B1 (pl)
JP (1) JP5546185B2 (pl)
DE (1) DE102008046347A1 (pl)
PL (1) PL2161416T3 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101339A1 (de) 2017-01-25 2018-07-26 Voith Patent Gmbh Verfahren zum Betreiben eines Antriebsstranges zum drehzahlvariablen Antreiben einer Arbeitsmaschine und Antriebsstrang

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011080836A1 (de) 2011-08-11 2013-02-14 Siemens Aktiengesellschaft Rotordreheinrichtung
WO2013124979A1 (ja) * 2012-02-22 2013-08-29 三菱重工コンプレッサ株式会社 ターニング装置、および、回転機械
JP6058167B2 (ja) 2014-01-28 2017-01-11 三菱重工コンプレッサ株式会社 ターニング装置及び回転機械
WO2016182461A1 (en) 2015-05-13 2016-11-17 General Electric Company Rotor turning system and method
DE102015212402A1 (de) * 2015-07-02 2017-01-05 Siemens Aktiengesellschaft Andrehvorrichtung für eine sich im Stillstand befindliche Gasturbine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021719A (en) * 1960-07-21 1962-02-20 Westinghouse Electric Corp Rotor turning gear control apparatus
DE2405721A1 (de) * 1974-02-06 1975-08-14 Bhs Bayerische Berg Rotordrehvorrichtung fuer eine arbeitsund kraftmaschine
JPS5910711A (ja) * 1982-07-12 1984-01-20 Hitachi Ltd タ−ニング装置の昇圧装置
US4643637A (en) * 1985-09-13 1987-02-17 Elliott Turbomachinery Co., Inc. Remote operated turning gear engager
JPS63113106A (ja) * 1986-10-31 1988-05-18 Toshiba Corp 蒸気タ−ビンのタ−ニング装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101339A1 (de) 2017-01-25 2018-07-26 Voith Patent Gmbh Verfahren zum Betreiben eines Antriebsstranges zum drehzahlvariablen Antreiben einer Arbeitsmaschine und Antriebsstrang
WO2018137916A1 (de) 2017-01-25 2018-08-02 Voith Patent Gmbh Verfahren zum betreiben eines antriebsstranges zum drehzahlvariablen antreiben einer arbeitsmaschine und antriebsstrang
US10876612B2 (en) 2017-01-25 2020-12-29 Voith Patent Gmbh Method for operating a drive train for driving a working machine with variable rotation speed and drive train

Also Published As

Publication number Publication date
JP5546185B2 (ja) 2014-07-09
JP2010065700A (ja) 2010-03-25
EP2161416A2 (de) 2010-03-10
DE102008046347A1 (de) 2010-03-11
EP2161416A3 (de) 2013-04-17
PL2161416T3 (pl) 2015-03-31

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