US3752427A - Support arrangement for a turbomachine - Google Patents

Support arrangement for a turbomachine Download PDF

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Publication number
US3752427A
US3752427A US00232421A US3752427DA US3752427A US 3752427 A US3752427 A US 3752427A US 00232421 A US00232421 A US 00232421A US 3752427D A US3752427D A US 3752427DA US 3752427 A US3752427 A US 3752427A
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US
United States
Prior art keywords
casing
support
claw
tiltable
discs
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
US00232421A
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English (en)
Inventor
H Bellati
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
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Publication of US3752427A publication Critical patent/US3752427A/en
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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing

Definitions

  • This invention relates to a support arrangement for a turbo-machine having a casing, divided in a substantially horizontal plane, the arrangement comprising claw members on the upper and lower parts of said casing having abutment surfaces facing said plane and bearing on casing supports anchored in the foundations.
  • turbo-machines having casings between the'claw and the support is ensured and instawhich bear movably by means of claws on a foundation or on bearing pedestals in order to compensate for thermal expansion of the casing.
  • the weight of the turbo-machine is generally sufficient at least to compensate for the force derived from the torque of the turbine and tending to raise the claws and it is therefore generally possible to prevent the claws lifting from the abutment surface of the bearing and ensure permanent support.
  • increasing unit ratings of turbines, particularly steam turbines results in an increaseof the torque so that the restoring torque derived from, the turbine weight may no longer be sufficient to ensure that the claws continue to bear reliably and permanently on the supports.
  • the casing of the turbine remains in an unstable state and frequent load changes or vibrations may result in damage which endangers the casing and the anchoring of the turbine in the foundation.
  • the present invention provides a support arrangement for a turbo-machine having a casing divided in a substantially horizontal plane, comprising claw members on the upper and lower parts of said casing, the claw members having the abutment surfaces facing said substantially horizontal plane and bearing on casing supports anchored in foundations wherein tilting discs biased by diaphragm springs are interposed between the abutment surface of a claw of the lower casing part and a stressing bar rigidly mounted on a casing support.
  • a guide bolt may be provided on the tilting discs, said guide bolt being associated with a vibration damper disposed on the stressing bar.
  • An arrangement according to the invention has thev advantage that the support means for the claws are adjustable and are resiliently constructed. When the casing is in a state akin to vibration or is subject to a lifting force on one side, permanent non-positive connection bility of the system is substantially avoided.
  • FIG. 1 is an elevation partly in section of a support arrange-ment for a steam turbine casing
  • FIG. 2 is a plan view of the support arrangement
  • FIG. 3 is a vertical section showing details of one of the claws.
  • a claw l of an upper part 7 of a steam turbine casing 8 bears on a support 9 through an interposed sliding disc 10.
  • the claw 1 is disposed in the vicinity of a casing flange ll andis laterally offset to a claw 2, mounted on aflange 12 of the lower part of the turbine, casing 8, and extending into a recess 13 of the support 9.
  • the support9 is attached by means of tie bolts 14 to a foundation l5, with wedges 16 being provided for centering purposes.
  • a bearing l7'of the'steam turbine shaft is shown as being integral with the support 9 but could also be separate therefrom and be mounted on'a separate bearing pedestal.
  • the claw 2 of the lower part of the turbine casing is fixed in the horizontal position by means of a stressing bar 3, bridging the recess 13, the stressing bar 3 being provided with stressing bolts 18 which locate the bar on the support 9.
  • FIG. 3 shows the stressing bar 3, mounted by means of the stressing bolts 18 on the support 9, on an enlarged scale.
  • the claw 2, associated with the lower part of the turbine casing 8, is disposed on the recess 13 of the support 9 and is adjusted in the cold state to have a clearance 8 between the stressing bar 3 and the abutment surface 2a of the claw 2.
  • Two tiltable discs 4 and 5 having conically chamfered surfaces which roll against one another are provided in a recess of the stressing bar 3, diaphragm springs. 19, which areprestressed, being disposed between the tiltable disc 4 and the stressing bar 3.
  • a guide bolt 6, associated with a conventional vibration damper not shown, is disposed on one tilting disc, preferably disc 4' which is closest to the stressing bar 3. Accordingly, vibrations on the support resulting from operation of the turbine are either completely suppressed or are attenuated at least to the extent whereby any harmful effects on the claw supports are substantially eliminated.
  • the tiltable discs 4, 5 are constructed as annular cylindrical discs, one side of the cross-section being progressively chamfered relative to the circumference.
  • the chamfering on the tiltable discs maybe replaced by other shapes, for example by a lenticular or spherical construction of the cross-sectional surfaces of the components which roll upon each other.
  • a support arrangement for a turbo-machine having a casing divided in a substantially horizontal plane comprising claw members on the upper and lower parts of said casing, said claw members having abutment surfaces facing said substantially horizontal plane and bearing on casing supports anchored in foundations, and tiltable discs biased by diaphragm springs inter posed between the abutment surface of a claw of the on the stressing bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Vibration Prevention Devices (AREA)
US00232421A 1971-03-11 1972-03-07 Support arrangement for a turbomachine Expired - Lifetime US3752427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH369071A CH528668A (de) 1971-03-11 1971-03-11 Turbomaschinenabstützeinrichtung

Publications (1)

Publication Number Publication Date
US3752427A true US3752427A (en) 1973-08-14

Family

ID=4261418

Family Applications (1)

Application Number Title Priority Date Filing Date
US00232421A Expired - Lifetime US3752427A (en) 1971-03-11 1972-03-07 Support arrangement for a turbomachine

Country Status (6)

Country Link
US (1) US3752427A (xx)
JP (1) JPS5420603B1 (xx)
CH (1) CH528668A (xx)
FR (1) FR2129568A5 (xx)
GB (1) GB1374920A (xx)
SE (1) SE377824B (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151970A (en) * 1974-05-31 1979-05-01 Escher Wyss Aktiengesellschaft Mounting of tubular turbines
US5104289A (en) * 1990-10-25 1992-04-14 Westinghouse Electric Corp. Turbine having support arrangement for minimizing humping
US5133641A (en) * 1991-02-01 1992-07-28 Westinghouse Electric Corp. Support arrangement for optimizing a low pressure steam turbine inner cylinder structural performance
EP0911948A2 (de) * 1997-10-02 1999-04-28 ABBPATENT GmbH Elektrische Grossmaschine
US20100224664A1 (en) * 2007-09-19 2010-09-09 Takayuki Hishinuma Compressor
EP3039267A1 (en) * 2013-08-29 2016-07-06 Dresser Rand Company Support assembly for a turbomachine
CN107002506A (zh) * 2014-12-01 2017-08-01 三菱日立电力系统株式会社 蒸汽涡轮壳体

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411960A1 (fr) * 1977-12-14 1979-07-13 Creusot Loire Fixation sur socle du stator d'une turbomachine
US10612420B2 (en) * 2016-11-17 2020-04-07 General Electric Company Support structures for rotors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1678968A (en) * 1927-03-01 1928-07-31 Westinghouse Electric & Mfg Co Turbine-cylinder support
US1682317A (en) * 1928-08-28 Turbine support
US3039645A (en) * 1960-08-29 1962-06-19 Babcock & Wilcox Co Pressure vessel closure
US3533710A (en) * 1968-05-08 1970-10-13 Westinghouse Electric Corp Turbine valve assembly erection
US3630635A (en) * 1970-09-10 1971-12-28 Gen Electric Turbine casing with raised horizontal joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682317A (en) * 1928-08-28 Turbine support
US1678968A (en) * 1927-03-01 1928-07-31 Westinghouse Electric & Mfg Co Turbine-cylinder support
US3039645A (en) * 1960-08-29 1962-06-19 Babcock & Wilcox Co Pressure vessel closure
US3533710A (en) * 1968-05-08 1970-10-13 Westinghouse Electric Corp Turbine valve assembly erection
US3630635A (en) * 1970-09-10 1971-12-28 Gen Electric Turbine casing with raised horizontal joint

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151970A (en) * 1974-05-31 1979-05-01 Escher Wyss Aktiengesellschaft Mounting of tubular turbines
US5104289A (en) * 1990-10-25 1992-04-14 Westinghouse Electric Corp. Turbine having support arrangement for minimizing humping
US5133641A (en) * 1991-02-01 1992-07-28 Westinghouse Electric Corp. Support arrangement for optimizing a low pressure steam turbine inner cylinder structural performance
EP0911948A2 (de) * 1997-10-02 1999-04-28 ABBPATENT GmbH Elektrische Grossmaschine
EP0911948A3 (de) * 1997-10-02 2000-11-08 ABBPATENT GmbH Elektrische Grossmaschine
US20100224664A1 (en) * 2007-09-19 2010-09-09 Takayuki Hishinuma Compressor
EP3039267A1 (en) * 2013-08-29 2016-07-06 Dresser Rand Company Support assembly for a turbomachine
EP3039267A4 (en) * 2013-08-29 2017-03-29 Dresser Rand Company Support assembly for a turbomachine
US10767660B2 (en) 2013-08-29 2020-09-08 Dresser-Rand Company Support assembly for a turbomachine
CN107002506A (zh) * 2014-12-01 2017-08-01 三菱日立电力系统株式会社 蒸汽涡轮壳体
CN107002506B (zh) * 2014-12-01 2019-08-13 三菱日立电力系统株式会社 蒸汽涡轮壳体

Also Published As

Publication number Publication date
SE377824B (xx) 1975-07-28
DE2115638B2 (de) 1977-05-26
GB1374920A (en) 1974-11-20
DE2115638A1 (de) 1972-09-21
CH528668A (de) 1972-09-30
JPS5420603B1 (xx) 1979-07-24
FR2129568A5 (xx) 1972-10-27

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