US3832087A - Axial turbine combined with reverse turbine - Google Patents

Axial turbine combined with reverse turbine Download PDF

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Publication number
US3832087A
US3832087A US00406557A US40655773A US3832087A US 3832087 A US3832087 A US 3832087A US 00406557 A US00406557 A US 00406557A US 40655773 A US40655773 A US 40655773A US 3832087 A US3832087 A US 3832087A
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United States
Prior art keywords
turbine
reverse
main
turbine housing
reverse turbine
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
US00406557A
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English (en)
Inventor
P Lohonen
O Karlsson
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ABB Stal AB
Original Assignee
Stal Laval Turbin AB
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Publication date
Application filed by Stal Laval Turbin AB filed Critical Stal Laval Turbin AB
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Publication of US3832087A publication Critical patent/US3832087A/en
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    • 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
    • F01D13/00—Combinations of two or more machines or engines
    • F01D13/006—Combinations of two or more machines or engines one being a reverse turbine
    • 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
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/02—Adaptations for driving vehicles, e.g. locomotives
    • F01D15/04—Adaptations for driving vehicles, e.g. locomotives the vehicles being waterborne vessels

Definitions

  • PAIE-NTEMuszmn SHEET 2 BF 2 ill AXIAL TURBINE COMBINED WITH REVERSE TURBINE BACKGROUND OF THE INVENTION For many installations, it is necessary to provide both forward and reverse turbines. In marine turbines, for example, the main turbine for forward propulsion must be accompanied by a reverse turbine to enable the ship to back, since it is normally not possible to reverse a single turbine. In such cases, the reverse turbine is usually located on an extension of the main turbine shaft at the outlet end of the main turbine. If the ship is provided with both high and low pressure turbines, the reverse turbine is normally positioned on the low pressure turbine so that it is in direct communication with the condenser.
  • the present invention provides an arrangement for suspension of the reverse turbine housing within the outlet portion of the main turbine housing in combined turbine installations, in a manner which avoids the de' velopment of potentially damaging asymmetry and outof-true distortion from thermally induced movements in the turbine structure.
  • a symmetrical system of supporting plates or vanes is mounted within, and secured to, the outlet portion of the main turbine housing.
  • the reverse turbine housing, or its outlet end portion is attached to and suspended within the symmetrical plate system.
  • a framework of connecting struts joins the reverse turbine stator housing and its outlet end portion symmetrically and circumferentially around their outer periphery.
  • This arrangement provides symmetrical suspension of the reverse turbine, unaffected by thermal variations in the turbines, and, by structurally unloading the open inspection shaft of the main turbine, permits lighter construction and more freedom in the placement of this shaft, thereby making possible a shorter more compact turbine unit.
  • FIG. 4 is a longitudinal sectional view of a modified embodiment of this invention.
  • FIG. 5 is a cross-sectional view of the embodiment of FIG. 4.
  • End portion 5 is provided with an opening and a seal for turbine shaft 21 and carries shaft bearing 6.
  • Supporting struts 4 may bend with temperature fluctuations between reverse turbine housing 2 and outlet end piece 5, but their centering effect will be maintained by their symmetrical configuration.
  • Bearing 6 for rotor shaft .21 may be reached, even while the turbine is in operation, through inspection chamber 14 on an open shaft 10, which is sealed against end portion 5 carrying bearing 6.
  • This construction leaving shaft 10 unloaded, nonforce-absorbing, and connected to condenser wall 11 through expandable bellows 15, ensures that all forces and torque from the reverse turbine and rotor bearing 6 are transmitted to outlet portion 1 through support plates 3.
  • the combined turbine unit is capable of making rapid load alterations without jeopardizing the centering between stationary and rotating parts, and stresses on the stationary parts are minimized.
  • the vertical dividing plane of the turbine unit defined by flanges 12 between outlet portion 1 and con denser wall 11 and flanges 13 between open shaft 10 and outlet portion 5, is positioned so that turbine rotor shaft 21 can be lifted without disturbing condenser 11, open shaft 10 and inspection chamber 14.
  • prior art construction required shaft 10 to be strong, heavy, and large enough to be load-bearing and to be mounted within outlet portion 1; the arrangement according to this invention permits lighter construction of shaft 10 and its placement in condenser portion 11, resulting in a considerably shorter, more compact turbine unit.
  • FIGS. 4 and 5 differs from the construction of FIGS. l-3 in that outlet end portion 5 rather than reverse turbine housing 2 is suspended in support plates 3.
  • the framework of struts 4 still symmetrically connects elements 2 and 5.
  • FIGS. 4 and 5 Since end portion absorbs the side forces on hearing 6, the arrangement of FIGS. 4 and 5 gives more direct support against these side forces, which are transmitted through support plates 3 to outer supports 17 positioned directly below plate 3 and resting against the foundation of the turbine unit.
  • FIGS. 4 and 5 correspond to those previously described for FIGS. l3 and are designated by the same reference characters.
  • the reverse turbine housing being formed of a major stator portion and an outlet end portion, said major portion and said outlet end portion circumferentially connected by a symmetrical framework of support struts;
  • Main axial turbine combined with reverse turbine according to claim 1 further comprising an inspection chamber mounted on said outlet end portion of the reverse turbine housing, said inspection chamber being in communication with the outside through an open shaft flexibly attached to the outlet portion of the main turbine' housing by expandable connecting means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)
US00406557A 1972-10-20 1973-10-15 Axial turbine combined with reverse turbine Expired - Lifetime US3832087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13563/72A SE369091B (de) 1972-10-20 1972-10-20

Publications (1)

Publication Number Publication Date
US3832087A true US3832087A (en) 1974-08-27

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ID=20297608

Family Applications (1)

Application Number Title Priority Date Filing Date
US00406557A Expired - Lifetime US3832087A (en) 1972-10-20 1973-10-15 Axial turbine combined with reverse turbine

Country Status (5)

Country Link
US (1) US3832087A (de)
JP (1) JPS4973503A (de)
DE (1) DE2350464C3 (de)
GB (1) GB1438582A (de)
SE (1) SE369091B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764083A (en) * 1985-08-19 1988-08-16 Hitachi, Ltd. Discharge ring supporting structure of adjustable-blade axial-flow turbine
US5083040A (en) * 1990-06-07 1992-01-21 General Electric Company Integrated turbine generator
US20110000222A1 (en) * 2007-08-31 2011-01-06 General Electric Company Gas turbine rotor-stator support system
US9494044B1 (en) * 2014-04-02 2016-11-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Turbo-electric compressor/generator using Halbach arrays
CN107725119A (zh) * 2017-12-06 2018-02-23 中国船舶重工集团公司第七0三研究所 一种高压腔室的嵌套式汽封平衡结构
CN107956515A (zh) * 2017-12-06 2018-04-24 中国船舶重工集团公司第七0三研究所 一种双层缸船用汽轮机正倒车汽缸合缸一体化结构
CN114542212A (zh) * 2022-03-09 2022-05-27 中国船舶重工集团公司第七0三研究所 一种新型船用汽轮机倒车汽缸

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US725184A (en) * 1903-01-13 1903-04-14 Albert Cromwell Steam-turbine.
US1243131A (en) * 1913-01-23 1917-10-16 Giuseppe Belluzzo Steam-turbine.
US1315153A (en) * 1919-09-02 Reversing-tttrbihe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1315153A (en) * 1919-09-02 Reversing-tttrbihe
US725184A (en) * 1903-01-13 1903-04-14 Albert Cromwell Steam-turbine.
US1243131A (en) * 1913-01-23 1917-10-16 Giuseppe Belluzzo Steam-turbine.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764083A (en) * 1985-08-19 1988-08-16 Hitachi, Ltd. Discharge ring supporting structure of adjustable-blade axial-flow turbine
US5083040A (en) * 1990-06-07 1992-01-21 General Electric Company Integrated turbine generator
US20110000222A1 (en) * 2007-08-31 2011-01-06 General Electric Company Gas turbine rotor-stator support system
US9494044B1 (en) * 2014-04-02 2016-11-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Turbo-electric compressor/generator using Halbach arrays
CN107725119A (zh) * 2017-12-06 2018-02-23 中国船舶重工集团公司第七0三研究所 一种高压腔室的嵌套式汽封平衡结构
CN107956515A (zh) * 2017-12-06 2018-04-24 中国船舶重工集团公司第七0三研究所 一种双层缸船用汽轮机正倒车汽缸合缸一体化结构
CN107725119B (zh) * 2017-12-06 2024-01-12 中国船舶重工集团公司第七0三研究所 一种高压腔室的嵌套式汽封平衡结构
CN114542212A (zh) * 2022-03-09 2022-05-27 中国船舶重工集团公司第七0三研究所 一种新型船用汽轮机倒车汽缸

Also Published As

Publication number Publication date
DE2350464B2 (de) 1979-03-29
DE2350464C3 (de) 1979-11-29
SE369091B (de) 1974-08-05
JPS4973503A (de) 1974-07-16
GB1438582A (en) 1976-06-09
DE2350464A1 (de) 1974-05-02

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