US1345642A - Blade-mounting - Google Patents

Blade-mounting Download PDF

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Publication number
US1345642A
US1345642A US241433A US24143318A US1345642A US 1345642 A US1345642 A US 1345642A US 241433 A US241433 A US 241433A US 24143318 A US24143318 A US 24143318A US 1345642 A US1345642 A US 1345642A
Authority
US
United States
Prior art keywords
blade
tongues
mounting
rivets
joint
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
US241433A
Other languages
English (en)
Inventor
Henry F Schmidt
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric 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
Priority to GB114826D priority Critical patent/GB114826A/en
Priority claimed from US15897717A external-priority patent/US1289278A/en
Priority to FR489485A priority patent/FR489485A/fr
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US241433A priority patent/US1345642A/en
Application granted granted Critical
Publication of US1345642A publication Critical patent/US1345642A/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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3053—Fixing blades to rotors; Blade roots ; Blade spacers by means of pins

Definitions

  • This invention relates to blade mounting and particularly to that form of blade mounting used in fluid turbines and the like, and has for an object to produce a new and. improved blade mounting which is especially adapted to be employed in attaching blades to moving blade carrying elements.
  • Turbine blades have frequently been mounted by inserting their shanks in a groove in the blade carrying element and by then securing each blade shank in place titi with one or more locking members such as rivets.
  • the ordinary construction consists in a single groove in the blade carrying element and a single tongue on the blade'shank so that the rivets are in double shear.
  • the blade shank straddled a single tongue on the blade carrying element.
  • the size of the rivet or rivets is limited by the pitch of the blades and. consequently by the amount of material which may be left in the shank.
  • the number of rivets of a rea sonable size is limited for the same reason.
  • FIG. T have illustrated a portion of a blade carrying element 5 and a portion of a blade 6, which is mounted on the blade carrying element 5.
  • the shank of the blade 6 is shown as provided with three tongues 7, 8 and 9, which fit into grooves in the blade carrying element 5 and cooperate with two tongues 10 and 11, formed on the blade carrying element 5.
  • the central tongue 8 of the blade shank is shown longer than the two side tongues 7 and 9, so that an inner locking member or rivet 12 passes through only the central tongue 8 and is therefore only in double shear.
  • An outer locking member or rivet 13 passes through the tongues 'l', 10, 11. and 9 and is there fore in quadruple shear.
  • tongues 7 and 9 constitutes the essential difference between the construction disclosed in the above mentioned application and the present construction.
  • the outer flanges or tongues are reinforced against spreading Without the use of additional rivets and 0011- sequently the construction is simple and rigid. 7
  • a blade mounting comprising a blade shank provided with at least three tongues adapted to interleave with at least two tongues provided upon a blade carrying element, the free ends of the outer tongues having interlocking engagement with the adjacent portion of the inner tongues for preventing lateral displacement of the outer tongues, and means for preventim separation of the joint in a longitudinal direction.
  • a blade mounting comprising a shank element forming a multiple tongue groove joint with a blade carrying element, one of the said elements being provided with at least three tongues adapted to interleave with at least two tongues provided upon the other element, the free ends of the outer tongues having interlocking engagement with the adjacent portion of the inner tongues for preventing lateral displacement of the outer tongues, and means for preventing longitudinal separation of the 'oint.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Insertion Pins And Rivets (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
US241433A 1917-03-31 1918-06-22 Blade-mounting Expired - Lifetime US1345642A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB114826D GB114826A (enrdf_load_stackoverflow) 1917-03-31
FR489485A FR489485A (fr) 1917-03-31 1918-03-27 Montage des lames de turbines à vapeur
US241433A US1345642A (en) 1917-03-31 1918-06-22 Blade-mounting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15897717A US1289278A (en) 1917-03-31 1917-03-31 Blade-mounting.
US241433A US1345642A (en) 1917-03-31 1918-06-22 Blade-mounting

Publications (1)

Publication Number Publication Date
US1345642A true US1345642A (en) 1920-07-06

Family

ID=26855544

Family Applications (1)

Application Number Title Priority Date Filing Date
US241433A Expired - Lifetime US1345642A (en) 1917-03-31 1918-06-22 Blade-mounting

Country Status (3)

Country Link
US (1) US1345642A (enrdf_load_stackoverflow)
FR (1) FR489485A (enrdf_load_stackoverflow)
GB (1) GB114826A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307775A (en) * 1964-09-04 1967-03-07 Rolls Royce Compressors for gas turbine jet propulsion engines
US4135849A (en) * 1977-01-21 1979-01-23 Westinghouse Electric Corp. Pinned root turbine blade providing maximum friction damping
US5062769A (en) * 1989-11-22 1991-11-05 Ortolano Ralph J Connector for turbine element
US5100296A (en) * 1990-04-09 1992-03-31 Westinghouse Electric Corp. Steam turbine integral control stage blade group
CN107687445A (zh) * 2016-08-04 2018-02-13 通用电气公司 叶轮组件、改变叶轮的方法和将叶片安装至叶轮的方法
US20220412216A1 (en) * 2019-12-10 2022-12-29 Safran Aircraft Engines Turbine rotor wheel for an aircraft turbomachine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3307775A (en) * 1964-09-04 1967-03-07 Rolls Royce Compressors for gas turbine jet propulsion engines
US4135849A (en) * 1977-01-21 1979-01-23 Westinghouse Electric Corp. Pinned root turbine blade providing maximum friction damping
US5062769A (en) * 1989-11-22 1991-11-05 Ortolano Ralph J Connector for turbine element
US5100296A (en) * 1990-04-09 1992-03-31 Westinghouse Electric Corp. Steam turbine integral control stage blade group
CN107687445A (zh) * 2016-08-04 2018-02-13 通用电气公司 叶轮组件、改变叶轮的方法和将叶片安装至叶轮的方法
US20220412216A1 (en) * 2019-12-10 2022-12-29 Safran Aircraft Engines Turbine rotor wheel for an aircraft turbomachine
US11788423B2 (en) * 2019-12-10 2023-10-17 Safran Aircraft Engines Turbine rotor wheel for an aircraft turbomachine

Also Published As

Publication number Publication date
GB114826A (enrdf_load_stackoverflow)
FR489485A (fr) 1919-02-08

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