GB761187A - Improvements in or relating to bladed wheels for use with elastic fluids - Google Patents

Improvements in or relating to bladed wheels for use with elastic fluids

Info

Publication number
GB761187A
GB761187A GB23426/54A GB2342654A GB761187A GB 761187 A GB761187 A GB 761187A GB 23426/54 A GB23426/54 A GB 23426/54A GB 2342654 A GB2342654 A GB 2342654A GB 761187 A GB761187 A GB 761187A
Authority
GB
United Kingdom
Prior art keywords
plate
holes
blades
edges
hub
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
GB23426/54A
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.)
Garrett Corp
Original Assignee
Garrett Corp
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 Garrett Corp filed Critical Garrett Corp
Publication of GB761187A publication Critical patent/GB761187A/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
    • F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
    • F01D5/043—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type
    • F01D5/045—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the axial inlet- radial outlet, or vice versa, type the wheel comprising two adjacent bladed wheel portions, e.g. with interengaging blades for damping vibrations

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

761,187. Elastic-fluid turbines; centrifugal compressors. GARRETT CORPORATION. Aug. 12, 1954 [Sept. 11, 1953], No. 23426/54. Classes 110 (1) and 110 (3). A bladed wheel for use with elastic fluids comprises a number of adjacent axially connected rotatable hub portions, each having extending blade portions arranged to be in direct overlapping engagement, in the direction of rotation, with blade portions of the adjacent hub portions. An inward-flow turbine rotor comprises a back-plate 11, Fig. 1, having a cylindrical extension 13 over which is fitted a similar extension 14 of a separate hub 15. Pins 21 are inserted in alternate holes 23 before assembly and are subsequently driven into alternate holes 24 by means of a tool inserted through openings 22 and the unused holes 23, 24. Slight projections (not shown) on the cylindrical surfaces of the pins 21 ensure a tight fit in the holes 23, 24. Blades 12 and 16, integral with the back-plate 11 and hub 15 respectively, abut each other at edges 17 and 18, Figs. 1 and 3, which are disposed at an angle of about 45 degrees to the plane A of rotation. The interengagement of the edges 17, 18 damps the vibration of the blades 12, 16. A thick stationary ring 28 absorbs heat from the peripheral part of the back-plate 11, while the inner part of the back-plate 11 is heated by hot working gas entering the openings 22. As a result, thermal stresses in the back-plate due to unequal heating at starting are reduced. When the flow of gas is shut off, the ring 28 radiates heat to the peripheral part of the back-plate 11 and prevents it from cooling too rapidly in comparison with the inner part of the back-plate. A labyrinth seal provided by annular ribs 12b, 12c and annular grooves 29, 30 prevents excessive flow of hot gas along the back of the backplate 11. In a modification, Fig. 6, the blades 35, 36 are offset, with their edges 44, 45 set at an acute angle to each other so as to overlap between the points 42 and 43. The invention may be applied to compressors.
GB23426/54A 1953-09-11 1954-08-12 Improvements in or relating to bladed wheels for use with elastic fluids Expired GB761187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US761187XA 1953-09-11 1953-09-11

Publications (1)

Publication Number Publication Date
GB761187A true GB761187A (en) 1956-11-14

Family

ID=22130034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23426/54A Expired GB761187A (en) 1953-09-11 1954-08-12 Improvements in or relating to bladed wheels for use with elastic fluids

Country Status (1)

Country Link
GB (1) GB761187A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958905A (en) * 1975-01-27 1976-05-25 Deere & Company Centrifugal compressor with indexed inducer section and pads for damping vibrations therein
US4125344A (en) * 1975-06-20 1978-11-14 Daimler-Benz Aktiengesellschaft Radial turbine wheel for a gas turbine
US4183719A (en) * 1976-05-13 1980-01-15 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (MAN) Composite impeller wheel with improved centering of one component on the other
US5730582A (en) * 1997-01-15 1998-03-24 Essex Turbine Ltd. Impeller for radial flow devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958905A (en) * 1975-01-27 1976-05-25 Deere & Company Centrifugal compressor with indexed inducer section and pads for damping vibrations therein
US4125344A (en) * 1975-06-20 1978-11-14 Daimler-Benz Aktiengesellschaft Radial turbine wheel for a gas turbine
US4183719A (en) * 1976-05-13 1980-01-15 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (MAN) Composite impeller wheel with improved centering of one component on the other
US5730582A (en) * 1997-01-15 1998-03-24 Essex Turbine Ltd. Impeller for radial flow devices

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