GB918522A - Improvements in turbines and in the manufacture thereof - Google Patents

Improvements in turbines and in the manufacture thereof

Info

Publication number
GB918522A
GB918522A GB567861A GB567861A GB918522A GB 918522 A GB918522 A GB 918522A GB 567861 A GB567861 A GB 567861A GB 567861 A GB567861 A GB 567861A GB 918522 A GB918522 A GB 918522A
Authority
GB
United Kingdom
Prior art keywords
blades
machining
ring
outlet
inlet
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
GB567861A
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.)
Goetaverken AB
Original Assignee
Goetaverken AB
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 Goetaverken AB filed Critical Goetaverken AB
Publication of GB918522A publication Critical patent/GB918522A/en
Expired legal-status Critical Current

Links

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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • 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
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
    • F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
    • F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining
    • 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
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/961—Preventing, counteracting or reducing vibration or noise by mistuning rotor blades or stator vanes with irregular interblade spacing, airfoil shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Hydraulic Turbines (AREA)

Abstract

918,522. Elastic-fluid turbines. GOTAVERKEN A.B. Feb. 15, 1961 [Feb. 17, 1960], No. 5678/61. Class 110 (3). In a turbine comprising guide blades fixed to the turbine casing and a shroud ring encircling the blades, the blade roots are joined to an inner ring-shaped member fastened to the casing, and the inlet area is adjusted by reducing the guide blade height and by machining the inner diameter of the shroud ring to correspond. The guide blades 6, Fig. 1, are fixed to an inner part 4 of the turbine casing by means of an inner ring 7 which, as shown in Fig. 3, may be formed in sectors each comprising four blades. The inlet area of the flow passages 15 between the blades 6 can be adjusted to the required value by machining the blades to decrease their height. The shroud ring 9 surrounding the blades 6 and a guiding-piece 10 at the inlet 3 may have sufficient thickness to allow them to be machined to match the adjusted blade height. Alternatively, if the reduced blade height is confined to three alternative sizes only, the shroud ring 9 and the guiding-piece 10 may be made in a range of three different sizes, each size mainly corresponding to one of the three alternative blade heights. By the correct choice of ring and guiding-piece it is possible to make a fine adjustment with little machining. Tho shroud ring 9 may be provided with corresponding members 11 at the outlet. As shown in Fig. 3, the area of the flow passages 15 decreases towards the outlet ends of the blades, and the outlet area can consequently be increased by machining the trailing edges of the blades as at 16 to increase the outlet width of the passages 15 from a width 17 to a width 18. A consequential increase of the clearance between the blades 6 and the rotor is avoided by providing distancepieces between the ring 7 and the casing part 4 or by providing the part 4 with a machining allowance. If the blades 6 are arranged in sectors, the machining of the different sectors may be varied to vary the outlet area around the circumference, for example to allow for the inlet chamber being of volute form, to allow for local constrictions, or to take account of conditions in the vicinity of the inlet conduit.
GB567861A 1960-02-17 1961-02-15 Improvements in turbines and in the manufacture thereof Expired GB918522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE158860 1960-02-17

Publications (1)

Publication Number Publication Date
GB918522A true GB918522A (en) 1963-02-13

Family

ID=20258471

Family Applications (1)

Application Number Title Priority Date Filing Date
GB567861A Expired GB918522A (en) 1960-02-17 1961-02-15 Improvements in turbines and in the manufacture thereof

Country Status (3)

Country Link
CH (1) CH381017A (en)
ES (1) ES264649A1 (en)
GB (1) GB918522A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130379A (en) * 1977-04-07 1978-12-19 Westinghouse Electric Corp. Multiple side entry root for multiple blade group
US4616975A (en) * 1984-07-30 1986-10-14 General Electric Company Diaphragm for a steam turbine
US5271714A (en) * 1992-07-09 1993-12-21 General Electric Company Turbine nozzle support arrangement
EP1010857A1 (en) * 1998-12-16 2000-06-21 ABB Alstom Power (Schweiz) AG Modular steam turbine with standard blading
ITTO20090522A1 (en) * 2009-07-13 2011-01-14 Avio Spa TURBOMACCHINA WITH IMPELLER WITH BALLED SEGMENTS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130379A (en) * 1977-04-07 1978-12-19 Westinghouse Electric Corp. Multiple side entry root for multiple blade group
US4616975A (en) * 1984-07-30 1986-10-14 General Electric Company Diaphragm for a steam turbine
US5271714A (en) * 1992-07-09 1993-12-21 General Electric Company Turbine nozzle support arrangement
EP1010857A1 (en) * 1998-12-16 2000-06-21 ABB Alstom Power (Schweiz) AG Modular steam turbine with standard blading
US6308407B1 (en) 1998-12-16 2001-10-30 Abb Alstom Power (Schweiz) Ag Method of manufacturing a plurality of steam turbines for use in various applications
ITTO20090522A1 (en) * 2009-07-13 2011-01-14 Avio Spa TURBOMACCHINA WITH IMPELLER WITH BALLED SEGMENTS

Also Published As

Publication number Publication date
CH381017A (en) 1964-08-15
ES264649A1 (en) 1961-06-16

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