GB582825A - Improvements in or relating to turbines - Google Patents

Improvements in or relating to turbines

Info

Publication number
GB582825A
GB582825A GB1472544A GB1472544A GB582825A GB 582825 A GB582825 A GB 582825A GB 1472544 A GB1472544 A GB 1472544A GB 1472544 A GB1472544 A GB 1472544A GB 582825 A GB582825 A GB 582825A
Authority
GB
United Kingdom
Prior art keywords
rotor
passage
blades
shaft
housing
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
GB1472544A
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.)
Ljungstroms Angturbin AB
Original Assignee
Ljungstroms Angturbin 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 Ljungstroms Angturbin AB filed Critical Ljungstroms Angturbin AB
Priority to GB1472544A priority Critical patent/GB582825A/en
Publication of GB582825A publication Critical patent/GB582825A/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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • 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
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
    • F01D11/16—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means
    • F01D11/18—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing by self-adjusting means using stator or rotor components with predetermined thermal response, e.g. selective insulation, thermal inertia, differential expansion

Abstract

582,825. Elastic-fluid turbines. WATSON, F. (Aktiebolaget Ljungstroms Angturbin). Aug. 2, 1944, No. 14725. [Class 110 (iii)] In a gas or steam turbine, the rotor blades are formed, at least on the high pressure side of the turbine, of a material having high strength at operating temperatures, and the rotor and the guide blade carrying member, such as the turbine housing, are made of a material having a lower coefficient of expansion and a higher heat conductivity than the rotor blade material. The rotor blades may be of austenitic steel containing a high percentage of nickel and chromium and preferably also containing tungsten ; the rotor and housing may be of martensitic steel containing 0.75 to 2.5 per cent. of chromium and 0.3 to 1.0 per cent. of molybdenum. The rotor 10 comprises discs 12, having an inner axial passage 14, and welded together as at 16, 18. The shaft 34, which is provided with radial and thrust bearings 35 is connected to the rotor through a conical member 32 formed integrally with the shaft and with a disc 12. The shaft 44, which is journalled in a bearing 42, is similarly connected to the rotor. Packing is provided at 36, 38, 60. Cooling medium, such as air from the air compressor supplying air for-combustion, may be supplied via passage 46, annular chamber 48, orifices 50, and channels 51, 52 to a space 54, from which it flows via passages 22 to each rotor space 20 in turn, finally entering the passage 14, from which it flows via passages 56, 58 into passage 30 to join the current of driving fluid. The guide blades 26 are carried by rings 27, which are of greater axial width than the guide blades in order to protect the housing 28 from the hot working medium, and may be made of the same material as the rotor blades. The inlet may be provided with a sheet metal lining 31. A further embodiment is described in which the rotor is made with an integral blade carrier, suitable passages for cooling being bored in the solid rotor. Baffle inserts may be provided to reduce -the area of the rotor passage so as to increase the rate of flow of cooling medium.
GB1472544A 1944-08-02 1944-08-02 Improvements in or relating to turbines Expired GB582825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1472544A GB582825A (en) 1944-08-02 1944-08-02 Improvements in or relating to turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1472544A GB582825A (en) 1944-08-02 1944-08-02 Improvements in or relating to turbines

Publications (1)

Publication Number Publication Date
GB582825A true GB582825A (en) 1946-11-28

Family

ID=10046373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1472544A Expired GB582825A (en) 1944-08-02 1944-08-02 Improvements in or relating to turbines

Country Status (1)

Country Link
GB (1) GB582825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936189A (en) * 2009-06-30 2011-01-05 株式会社日立制作所 Turbine rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101936189A (en) * 2009-06-30 2011-01-05 株式会社日立制作所 Turbine rotor
US8596982B2 (en) 2009-06-30 2013-12-03 Hitachi, Ltd. Turbine rotor

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