EP0266581A1 - Vireur pour turbomachines - Google Patents

Vireur pour turbomachines Download PDF

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Publication number
EP0266581A1
EP0266581A1 EP87114873A EP87114873A EP0266581A1 EP 0266581 A1 EP0266581 A1 EP 0266581A1 EP 87114873 A EP87114873 A EP 87114873A EP 87114873 A EP87114873 A EP 87114873A EP 0266581 A1 EP0266581 A1 EP 0266581A1
Authority
EP
European Patent Office
Prior art keywords
shaft
oil
overrunning clutch
bearing
hydraulic
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
EP87114873A
Other languages
German (de)
English (en)
Other versions
EP0266581B1 (fr
Inventor
Heinrich Dr. Oeynhausen
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
Priority to AT87114873T priority Critical patent/ATE50825T1/de
Publication of EP0266581A1 publication Critical patent/EP0266581A1/fr
Application granted granted Critical
Publication of EP0266581B1 publication Critical patent/EP0266581B1/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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/34—Turning or inching gear

Definitions

  • the present invention relates to a device for rotating the shaft of a turbo set according to the preamble of claim 1, and methods for operating such a shaft rotating device.
  • DE-PS 975 646 describes a simple shaft turning device with blades driven by pressure oil and placed on a clutch, but which has the disadvantage of considerable oil consumption when starting up and during operation.
  • hydromotors for breaking loose and rotating shafts.
  • the integration into the various supply and control systems is also described. While the basic structure of a drive system with a hydraulic motor is known from DE-AS 19 56 178, the mechanical arrangement of a hydraulic motor and an overrunning clutch is described in DE-PS 27 32 036, these two components being arranged next to a shaft and by means of gearwheels these are engaged. On the one hand, this arrangement requires a lot of space to the side of the shaft and, in addition, an additional bearing for the hydraulic motor and gears.
  • the object of the present invention is the space-saving arrangement of a shaft rotation in alignment with the shaft device and the integration of this shaft turning device in the oil supply systems that are necessary for starting. Additional bearings should be avoided if possible.
  • the drive system is a hydraulic motor with an integrated connecting gear, a so-called hydraulic gear motor, which has become standard in the meantime.
  • a hydraulic gear motor is attached to the end wall of the front bearing housing with the interposition of a commercially available overrunning clutch, the overrunning clutch the shaft of the turbo set via the shaft of an auxiliary unit, for. B. via the main oil pump also arranged in the front bearing housing, couples with the shaft of the hydraulic gear motor or separates these shafts.
  • the hydraulic geared motor is connected to the oil supply of the shaft lifting system, which is necessary anyway.
  • the shaft lifting system allows the shaft to float into the lower area of the shaft bearing by supplying it under high pressure, for example 180 bar, which only makes it possible to rotate the shaft.
  • high pressure for example 180 bar
  • the start-up process is particularly easy, since the hydraulic motor also starts when the shaft is floating.
  • an adjustable throttle can be provided, which initially allows the full pressure of the oil system to reach the hydraulic motor when the shaft breaks loose, but then prevents it from rotating too quickly. Possibly.
  • a so-called flow control valve can also be used instead of the throttle, which has the advantage that the engine speed remains approximately constant in all load conditions.
  • the engine speed increases or decreases with changes in load.
  • the shaft rotating device can be separated from the shaft lifting system if necessary, e.g. B. to carry out adjustment work.
  • the oil supply line of the hydraulic geared motor should be connected to the lubricating oil system of the turbo set, preferably via an adjustable throttle and a check valve.
  • the hydraulic gear motor In the event of an overhaul, when the hydraulic gear motor is no longer needed, it may be necessary, as is known per se, to let the hydraulic motor continue to rotate in order to prevent bearing damage. This can be achieved by connecting to the lubricating oil system, which has only a low pressure of, for example, 2 bar.
  • the idle speed can be preselected by suitable setting of a throttle.
  • the additional hydrostatic bearing of the foremost bearing which serves for centering, can generally be fed from the oil supply of the shaft lifting system, without extensive further changes being required.
  • the foremost bearing is then hydrostatically centered, which ensures that the overrunning clutch functions properly.
  • Claims 9, 10 and 11 relate to methods for operating the previously described device with its various configurations.
  • the simplicity of the processes to be triggered enables the start-up process to be automated without any problems, since the function of the hydraulic geared motor completely depends on the systems which are already required and does not require any special control measures.
  • Fig. 1 the connection of a shaft rotating device to the foremost end of a shaft 1 of a turbo set is shown in a longitudinal axial section.
  • the foremost unit on the shaft assembly of the turbo set is the main oil pump 2, the outlines of which are indicated.
  • the foremost bearing 3 of the shaft 1 is a bearing of the main oil pump 2, but this is not of critical importance for the principle of the invention.
  • This foremost bearing 3 of the shaft 1 like the other bearings, is provided with an oil inlet 5, so that hydrodynamic lubrication of the shaft is possible by feeding oil into the bearing part 3a.
  • this bearing is provided with an additional bearing part 3b and an oil feed 4, which serve for hydrostatic centering.
  • the inner ring 6 of the overrunning clutch is fastened, preferably screwed tight with a nut 9.
  • the outer ring 7 of the overrunning clutch can be connected to the inner ring via clamping bodies 8, the clamping bodies rotating with the inner ring 6 and, in the event of overtaking, at higher speeds of the Swing the inner ring 6 in so that no wear occurs on the outer ring 7 and the clamping bodies 8.
  • the outer ring 7 is connected to the shaft 14, preferably a profile shaft, via a corresponding profile shaft flange 13 and a retaining ring 10, screwed in the case shown. Retaining ring 10 and profile shaft flange 13 are supported by ball bearings 11 in a housing 12.
  • the housing 12 itself is connected to the housing of the foremost bearing on the shaft 1 via the bearing housing and is so attached or screwed on that relative movements between the two are not possible.
  • the hydraulic motor 16 with its integrated gear 15 is also firmly screwed to the housing 12 of the overrunning clutch, so that both are carried by the housing 12 of the overrunning clutch without additional mounting.
  • the oil supply to the hydraulic motor 16 takes place via an oil supply line 17, and the disposal via an oil drain line 18.
  • the leakage oil of the hydraulic transmission motor initially supplies the integrated transmission 15 internally and from there reaches the overrunning clutch via a leak oil outlet 19 and an oil line 20, which has an oil supply 21 inside to the profile shaft flange.
  • the profile shaft flange 13 in turn has an oil collecting collar 22, in which the incoming oil is collected under the influence of gravity and is fed through oil drain holes 23 to the clamping bodies 8 and the ball bearings 11 until it reaches an outlet, not shown.
  • Overrunning clutches which can be used in the present case, are relatively sensitive to eccentricities of inner ring 6 and outer ring 7.
  • a clutch used in tests switched perfectly up to eccentricities between outer and inner ring of 0.25 mm (concentricity deviation 0.5 mm) . Since manufacturing tolerances of parts 3, 2, 12, 11 and 10 must also be taken into account, the actual eccentricity must always be less than about half the bearing clearance between 1 and 3. On the other hand, bearing damage due to eccentric clutch engagement is prevented.
  • the max. Bearing play is limited to 0.4 mm by the increasing oil consumption.
  • a hydrostatic, self-centering bearing 3b additionally integrated in the foremost bearing 3 can, however, center the shaft end with the inner 6 of the overrunning clutch so well that no eccentricities above the tolerance limit occur during normal bearing wear. Since the entire shaft rotating device otherwise fully follows all movements of the front bearing housing, further factors need not be taken into account.
  • the oil supply 30 of the shaft lifting system which has a pressure of about 180 bar, for example, feeds on the one hand the feed lines 31, 32 to the individual bearings of the shaft 1 and on the other hand the oil feed line 33, 17 to the hydraulic motor 16.
  • the adjustable throttle valves 34, 37 allow the Adjust the distribution of the oil quantities between the pump bearing and the hydraulic motor, with the full pressure reaching the hydraulic motor when starting.
  • a pressure measuring device 35 and a shut-off valve 36 for shutting off the hydraulic motor can be provided.
  • the oil supply line 17 of the hydraulic motor can additionally be connected to the lubricating oil circuit 38 of the turboset via a check valve 40 and an adjustable throttle 39, which, for example, has a pressure of approximately 2 bar.
  • the present invention is characterized by a particularly simple, space-saving design and requires small additional control and regulating elements when starting up.
  • Hydraulic geared motor and overrunning clutch can be commercially available components, whereby for different torques differently strong, but otherwise identical hydraulic motors with corresponding overrunning clutches can be used. It is relatively easy to replace the hydraulic motor while the shaft is running, and retrofitting to the system with existing turbo sets is only possible with little effort.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
EP87114873A 1986-10-23 1987-10-12 Vireur pour turbomachines Expired - Lifetime EP0266581B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87114873T ATE50825T1 (de) 1986-10-23 1987-10-12 Wellendrehvorrichtung fuer turbosaetze und verfahren zu ihrem betrieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863636115 DE3636115A1 (de) 1986-10-23 1986-10-23 Wellendrehvorrichtung fuer turbosaetze und verfahren zu ihrem betrieb
DE3636115 1986-10-23

Publications (2)

Publication Number Publication Date
EP0266581A1 true EP0266581A1 (fr) 1988-05-11
EP0266581B1 EP0266581B1 (fr) 1990-03-07

Family

ID=6312338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114873A Expired - Lifetime EP0266581B1 (fr) 1986-10-23 1987-10-12 Vireur pour turbomachines

Country Status (4)

Country Link
EP (1) EP0266581B1 (fr)
AT (1) ATE50825T1 (fr)
DE (2) DE3636115A1 (fr)
IN (1) IN167380B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299326A1 (fr) * 1987-07-15 1989-01-18 Siemens Aktiengesellschaft Vireur à roue libre hydromécanique
EP2757230A1 (fr) 2013-01-16 2014-07-23 Alstom Technology Ltd Procédé pour la rotation d'un rotor de turbomachine et appareil de rotation pour appliquer ce procédé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107725126A (zh) * 2017-08-23 2018-02-23 佛山市轩宸机电设备有限公司 一种汽轮机电磁式液压盘车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1295544A (fr) * 1961-04-28 1962-06-08 Alsacienne Constr Meca Dispositif de virage pour le lancement de gros rotors de machines
FR1341662A (fr) * 1962-09-20 1963-11-02 Rateau Soc Dispositif de virage pour turbines à vapeur et machines similaires
DE2627032A1 (de) * 1976-06-16 1977-12-29 Kraftwerk Union Ag Anordnung zur druckoelversorgung von wellendrehvorrichtungen
DE2732036C2 (de) * 1977-06-24 1985-08-22 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Dreheinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1295544A (fr) * 1961-04-28 1962-06-08 Alsacienne Constr Meca Dispositif de virage pour le lancement de gros rotors de machines
FR1341662A (fr) * 1962-09-20 1963-11-02 Rateau Soc Dispositif de virage pour turbines à vapeur et machines similaires
DE2627032A1 (de) * 1976-06-16 1977-12-29 Kraftwerk Union Ag Anordnung zur druckoelversorgung von wellendrehvorrichtungen
DE2732036C2 (de) * 1977-06-24 1985-08-22 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Dreheinrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299326A1 (fr) * 1987-07-15 1989-01-18 Siemens Aktiengesellschaft Vireur à roue libre hydromécanique
EP2757230A1 (fr) 2013-01-16 2014-07-23 Alstom Technology Ltd Procédé pour la rotation d'un rotor de turbomachine et appareil de rotation pour appliquer ce procédé
US9970328B2 (en) 2013-01-16 2018-05-15 Ansaldo Energia Ip Uk Limited Method for barring a rotor of a turbomachine and barring apparatus for conducting such method

Also Published As

Publication number Publication date
ATE50825T1 (de) 1990-03-15
EP0266581B1 (fr) 1990-03-07
DE3636115A1 (de) 1988-04-28
IN167380B (fr) 1990-10-20
DE3761835D1 (de) 1990-04-12

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