EP0042469B1 - Turbomachine, en particulier turbine à gaz chaud avec stator ajustable en hauteur pour influencer continuellement le jeu du joint à labyrinthe - Google Patents

Turbomachine, en particulier turbine à gaz chaud avec stator ajustable en hauteur pour influencer continuellement le jeu du joint à labyrinthe Download PDF

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Publication number
EP0042469B1
EP0042469B1 EP81101816A EP81101816A EP0042469B1 EP 0042469 B1 EP0042469 B1 EP 0042469B1 EP 81101816 A EP81101816 A EP 81101816A EP 81101816 A EP81101816 A EP 81101816A EP 0042469 B1 EP0042469 B1 EP 0042469B1
Authority
EP
European Patent Office
Prior art keywords
pressure
housing
rotor shaft
support
actuated
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
Application number
EP81101816A
Other languages
German (de)
English (en)
Other versions
EP0042469A1 (fr
Inventor
Edmund Owsianny
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg 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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to AT81101816T priority Critical patent/ATE8168T1/de
Publication of EP0042469A1 publication Critical patent/EP0042469A1/fr
Application granted granted Critical
Publication of EP0042469B1 publication Critical patent/EP0042469B1/fr
Expired 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
    • F01D11/025—Seal clearance control; Floating assembly; Adaptation means to differential thermal dilatations
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S248/00—Supports
    • Y10S248/901—Support having temperature or pressure responsive feature

Definitions

  • the invention relates to a turbomachine, in particular a hot gas turbine, in which the machine housing is mounted such that it can be adjusted in height on variable support devices with respect to the rotor shaft.
  • the problem of alignment is also based on DE-AS 2 325 642, which is concerned with facilitating and improving the relative alignment of the power turbine rotor in the power turbine housing.
  • DE-AS 2 325 642 which is concerned with facilitating and improving the relative alignment of the power turbine rotor in the power turbine housing.
  • a suspension of the turbine on two pivots and a support of the gas generator on a movable support structure are proposed.
  • a similar suspension is also shown in DE-OS 2 617 024.
  • the housing of the turbine stator is suspended in a freely stretchable manner by means of radially directed bolts on flanges of the outer housing of the engine.
  • a multi-housing or multi-part machine set for example a turbo group consisting of a helium high-temperature turbine with a compressor and a generator
  • a turbo group consisting of a helium high-temperature turbine with a compressor and a generator
  • height-adjustable and axially movable supports are arranged between the foundation and the turbo group which act on claws on the side of the turbo group and should be hydraulically or mechanically height-adjustable. At least four such height-adjustable supports are provided for each machine housing.
  • a gas or steam turbine in which the machine housing outside of the area of the inlet and outlet side rotor shaft bearings, which are supported by bearing blocks arranged on the foundation, is to be mounted in height-adjustable manner independently of these on supporting devices with respect to the rotor shaft.
  • the turbine housing is supported in an articulated manner on the frame by supporting devices in that its ends are designed as balls and are mounted in ball sockets of the housing or the frame.
  • the support devices are designed as tubular rods through which a heat or refrigerant is passed.
  • the height adjustment of the support devices is to be carried out by changing the length due to temperature, namely by heating or cooling by means of the heating or holding means passed through the tubular rods.
  • the device according to US-A-3 764 098 is used to determine and check the weight distribution of a turbine for its support. It aims at housing alignment and simultaneous weight distribution check. In this respect, this device represents an assembly aid before commissioning.
  • DE-A-2 557 805 relates to a machine set consisting of e.g. B. from a turbine, an electrical machine and a pump, the rotor of which has a radial bearing relative to the foundation at three or more points apart.
  • Two of the radial bearings are designed as centering bearings, which determine the position of the rotor relative to the foundation men, while the other radial bearings are designed as radially displaceable bearings by means of an actuator.
  • the invention has for its object to provide an embodiment of the storage for turbomachines, in particular hot gas turbines that are subject to high thermal loads, which allows the problems described above to be met in a satisfactory manner.
  • the invention therefore relates to such a turbomachine, in particular a hot gas turbine, in which the machine housing is mounted outside of the region of the rotor shaft bearings on the inlet and outlet side, which are supported by means of bearing blocks arranged on the foundation, and are height-adjustable independently of these on variable support devices with respect to the rotor shaft.
  • the support device is attached in the region of the rotor shaft bearing and is designed as volume-variable pressure-actuated cushions such that the machine housing is connected to the foundation via crossbeams is height-adjustable by means of support sleeves supported on pressure-actuated pads, the pressure-actuated pads being arranged in ring grooves formed between the support sleeves and the support sleeves formed on studs with play, and that for automatic continuous influencing of the labyrinth seal play of the turbomachine, measurement sensors are assigned to each measurement sensor via control signal lines
  • the positioner is connected, which controls the electrohydraulic transducers assigned to the inlet and outlet sides via control lines and thereby the feed hr or the discharge of pressure medium via the lines to or from the annular spaces of the pressure-operated cushion support devices, and that a gas-loaded pressure medium reservoir or a pump unit with a zero
  • At least one hydraulic pressure cushion enclosed in a sealed annular space is arranged between each support sleeve and the sleeve surrounding it, which carries the machine housing via crossbeams, and is provided with separate supply and discharge lines for the pressure medium.
  • This design and arrangement of the volume-variable pressure-actuated upholstery can, in particular, achieve the further advantage that a better fine adjustment of the labyrinth seal play is possible and, as a result, a considerable amount of sealing medium can be saved, which, if the seal play is enlarged, due to the necessary greater radial play of the stuffing boxes would be required.
  • the bearing blocks of the rotor shaft are supported in a height-adjustable manner with respect to the foundation by means of volume-variable pressure-actuated cushions.
  • This arrangement together with the hydraulic mounting of the machine housing makes it considerably easier to adjust these parts mutually and in a horizontal position and to align them with any other machine units of a turbo group.
  • the vibration damping for both the housing and the turbine runner is significantly improved.
  • the turbine runs more smoothly and the foundation is relieved of vibrations. Even in the case of changes in shape and position of the foundation itself, the ideal position of the machine housing and the turbo rotor can always be achieved with the double adjustment option of the pressure-operated cushion bearing.
  • the resulting changes in shape are automatically and continuously compensated by appropriate adjustment of the machine housing relative to the rotor shaft so that the required labyrinth seal play and thus the radial play of the glands can be kept very tight, so that considerable Savings in sealing medium result.
  • a machine housing 1 of a turbo group is shown, which is shown in the upper part as a longitudinal section and in the lower part as a longitudinal view. Furthermore, the entry-side and exit-side bearing points with the designations I and 11 as well as a bearing point 111 of the subsequent machine housing are shown.
  • rotor shaft is designated 3
  • the indicated rotor bears the designation 24.
  • the machine housing 1 is supported on the cross member 15 in a manner not shown. There are also the stuffing boxes 23, the sensors 21 and the base plates 2 indicated. With 7 are the hydraulic pressure pad para-t Neillungssysteme designates which support the beams and with these the machine housing. 1
  • FIGS. 2 and 3 show details at C and D.
  • the machine housing 1 is supported on the cross member 15, which (FIGS. 4, 5) are supported hydraulically adjustable in height relative to the bearing block 5.
  • the rotor shaft 3 is sealed by means of the labyrinth seals 22, the sealing gap s of which is to be kept constant in all operating states of the machine.
  • an automatically effective labyrinth seal play setting is provided according to the invention, in which the measured value x is scanned by a respective sensor 21, which are arranged on the inlet and outlet sides of the thermally elastic labyrinth seal 22. These sensors continuously measure the change in gap x between the rotor and the seal.
  • the measured value x is transferred according to the invention by means of a transmission system (FIG. 6) to the hydraulic support in such a way that to compensate for gap changes, the pressure-actuated cushion 8 (FIG. 5) is fed with additional pressure medium or is removed.
  • FIG. 4 Further details of the arrangement are shown in FIG. 4.
  • the bearing block 5 is supported on the foundation 2 by means of pressure-actuated pads P1 enclosed in cylinders for vibration damping.
  • the bearing block 5 carries the rotor shaft bearing 4.
  • cross members 15 are arranged by means of the hydraulic pressure medium support according to the invention, on which the machine housing 1, not shown, is supported.
  • the pressure-operated cushion supports are indicated in Fig. 4 with the designations 7 and 13, 14. Details of these support systems can be found in FIG. 5.
  • Each of the cross members 15 shown in FIG. 4 is held by white pressure-operated cushion support systems, as shown in FIG. 5.
  • the support sleeve 7 is screwed into the crossmember 15 by means of a thread 20. This is closed by means of the cover 7a and is supported against the support sleeve 12 by the pressure-actuated cushion P enclosed in the annular space 8.
  • the annular space 8 is sealed off from the support sleeve 12 by means of the seals 18, 19.
  • a line 10 opens into the annular space 8, by means of which pressure oil can be supplied or discharged.
  • Up to the stop nut 16 the support sleeve 12 is moved into a maximum permissible end limit.
  • the upper nut 16 counters the lower stop nut 16.
  • the support sleeve 12 is guided on the stud 6, which is screwed into the bearing block 5.
  • the support sleeve 12 is supported on the bearing block 5 in a self-adjusting manner via the spherical shell 13 resting on the bearing block 5 and the ball head 14.
  • an annular space 9 is provided, which is sealed off from the support sleeve 12 by means of the seal 17.
  • leakage oil which passes between the support sleeve 7 and the support sleeve 12 collects from the annular space 8 and is discharged via the line 11.
  • FIG. 6 An electro-hydraulic circuit for carrying out the automatic sealing gap size control is shown in FIG. 6 as an example.
  • the dimension x as a deviation from a set value is continuously measured by the sensors 21 on the inlet and outlet sides by scanning the rotor shaft 3 and is given as a control signal via the lines 25 to positioners 26 processing the control signals.
  • the supply or discharge of pressure oil via the lines 10 to the annular spaces 8, which contain the pressure-actuated pads P is controlled via the lines 33 and the electro-hydraulic converters 27.
  • the pressure medium is generated by a motor-driven pressure medium pump 29, 30 and is sucked out of the storage container 28 and fed to the electrohydraulic converters 27 via the lines 32 and discharged back to the container 28 via the lines 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (4)

1. Turbomachine, notamment turbine à gaz chaud, dans laquelle le carter de la machine est monté en étant réglable en hauteur par rapport à l'arbre du rotor, sur des dispositifs de supports modifiables, machine caractérisée en ce que dans le cas d'un carter (1) de machine qui est muni des deux côtés vis à vis de l'arbre du rotor d'un joint d'étanchéité en labyrinthe alimenté par un fluide d'étanchement, les dispositifs de supports sont rapportés au voisinage des paliers (4) de l'arbre de rotor et revêtent la forme de coussins (P) de volume variable actionnés par la pression, le carter (1) de ta. machine étant monté réglable en hauteur par rapport aux fondations (2) par l'intermédiaire de traverses (15) au moyen de douilles porteuses (7) prenant appui sur des coussins (P) actionnés par la pression, les coussins (P) actionnés par la pression étant disposée dans des gorges annulaires (8) ménagées entre les douilles porteuses (7) et des douilles de supports (12) guidées avec du jeu sur des axes (6), tandis que pour influencer automatiquement de façon continue le jeu des joints d'étanchéité en labyrinthe de la turbomachine, des détecteurs (21) sont reliés par l'intermédiaire de canalisations de signaux de commande (25) à un régulateur de position (26) associé à chacun des détecteurs (21), et qui, par l'intermédiaire de canalisations de commande (33) commandent respectivement des convertisseurs électro-hydrauliques (27) associés au côté entrée et au côté sortie et règlent ainsi l'amenée du fluide sous pression par l'intermédiaire des canalisations (10) aux chambres annulaires (8) des dispositifs de supports à coussins actionnés par la pression, ou bien extraient ce fluide de ces chambres annulaires, cependant que comme source de fluide sous pression, pour la mise à disposition de fluide sous pression à un niveau de pression constamment le même et suffisant, un accumulateur de fluide sous pression sous coussin de gaz ou bien un ensemble de pompage (29,30) est utilisé.
2. Turbomachine selon la revendication 1, caractérisé en ce que les douilles de supports (12) prennent appui sur le support de palier (5) au moyen de paliers sphériques à auto-positionnement, constitués d'une coquille sphérique (13) et d'une tête sphérique (14).
3. Turbomachine selon les revendications 1 et 2, caractérise en ce qu'entre chaque douille de support (12) et la douille porteuse (7) qui l'entoure et qui porte, par l'intermédiaire de la traverse (15) le carter (1) de la machine, est disposé respectivement, au moins un coussin sous pression hydraulique (P) enfermé dans une chambre annulaire étanchée (8), ce coussin étant muni de canalisations distinctes d'amenée et d'évacuation (10, 11) pour le fluide sous pression.
4. Turbomachine selon la revendication 1, caractérisé en ce que les supports de paliers (5) de l'arbre (3) du rotor sont supportés en étant réglables en hauteur vis-à-vis des fondations (2) au moyen de coussins (P1) à volume variable actionnés par la pression.
EP81101816A 1980-06-19 1981-03-12 Turbomachine, en particulier turbine à gaz chaud avec stator ajustable en hauteur pour influencer continuellement le jeu du joint à labyrinthe Expired EP0042469B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101816T ATE8168T1 (de) 1980-06-19 1981-03-12 Stroemungsmaschine, insbesondere heissgasturbine, bei der das gehaeuse hoehenverstellbar gelagert ist zur selbsttaetigen kontinuierlichen beeinflussung des labyrinthdichtungsspieles.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3022861 1980-06-19
DE3022861A DE3022861C2 (de) 1980-06-19 1980-06-19 Strömungsmaschine, insbesondere Heißgasturbine, und Verfahren zur selbsttätigen kontinuierlichen Beeinflussung des Labyrinthdichtugsspieles der Strömungsmaschine

Publications (2)

Publication Number Publication Date
EP0042469A1 EP0042469A1 (fr) 1981-12-30
EP0042469B1 true EP0042469B1 (fr) 1984-06-27

Family

ID=6104917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101816A Expired EP0042469B1 (fr) 1980-06-19 1981-03-12 Turbomachine, en particulier turbine à gaz chaud avec stator ajustable en hauteur pour influencer continuellement le jeu du joint à labyrinthe

Country Status (6)

Country Link
US (1) US4405283A (fr)
EP (1) EP0042469B1 (fr)
JP (2) JPS5728808A (fr)
AT (1) ATE8168T1 (fr)
DE (2) DE3022861C2 (fr)
ES (2) ES8204053A1 (fr)

Families Citing this family (11)

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US4759262A (en) * 1987-05-11 1988-07-26 The Dow Chemical Company Apparatus for restraining rotary motion of a motor component
JP2888655B2 (ja) * 1991-02-28 1999-05-10 株式会社東芝 軸流タービンの軸封装置
WO2002077417A2 (fr) * 2001-03-26 2002-10-03 Pebble Bed Modular Reactor (Proprietary) Limited Procede de fonctionnement d'une turbine et turbine a gaz
EP1249579A1 (fr) * 2001-04-11 2002-10-16 Siemens Aktiengesellschaft Turbine à vapeur
US7368827B2 (en) * 2006-09-06 2008-05-06 Siemens Power Generation, Inc. Electrical assembly for monitoring conditions in a combustion turbine operating environment
US7656135B2 (en) * 2007-01-05 2010-02-02 General Electric Company Method and apparatus for controlling rotary machines
US20130073172A1 (en) * 2011-09-15 2013-03-21 Bret Dwayne Worden Detection system and method
DE102016108463A1 (de) * 2016-05-09 2017-11-09 Man Diesel & Turbo Se Labyrinthdichtung
CN107448611B (zh) * 2017-09-27 2024-05-24 孟金来 可调密封间隙的迷宫密封装置
US11939070B2 (en) 2020-02-21 2024-03-26 General Electric Company Engine-mounting links that have an adjustable inclination angle
US11970279B2 (en) 2020-02-21 2024-04-30 General Electric Company Control system and methods of controlling an engine-mounting link system

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Also Published As

Publication number Publication date
US4405283A (en) 1983-09-20
ES503177A0 (es) 1982-05-01
EP0042469A1 (fr) 1981-12-30
ES8204052A1 (es) 1982-05-01
JPS6325283Y2 (fr) 1988-07-11
ES503176A0 (es) 1982-05-01
DE3022861C2 (de) 1983-12-08
ES8204053A1 (es) 1982-05-01
ATE8168T1 (de) 1984-07-15
DE3164373D1 (en) 1984-08-02
DE3022861A1 (de) 1981-12-24
JPS6018203U (ja) 1985-02-07
JPS5728808A (en) 1982-02-16

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