US1149658A - Turbine-blading. - Google Patents

Turbine-blading. Download PDF

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Publication number
US1149658A
US1149658A US79277413A US1913792774A US1149658A US 1149658 A US1149658 A US 1149658A US 79277413 A US79277413 A US 79277413A US 1913792774 A US1913792774 A US 1913792774A US 1149658 A US1149658 A US 1149658A
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US
United States
Prior art keywords
slots
packing
roots
blade
grooves
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
US79277413A
Inventor
William J A London
George Hunter Plaine
Robert C Allen
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.)
TERRY STEAM TURBINE Co
Original Assignee
TERRY STEAM TURBINE Co
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 TERRY STEAM TURBINE Co filed Critical TERRY STEAM TURBINE Co
Priority to US79277413A priority Critical patent/US1149658A/en
Application granted granted Critical
Publication of US1149658A publication Critical patent/US1149658A/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
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/326—Locking of axial insertion type blades by other 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
    • 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
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • 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
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing

Definitions

  • a denotes the body of the rotor, the periphery of Which is transversely slotted at regular intervals, as indicated at b.
  • a setting tool spreads the roots and packing pieces into the grooves so that they lap the walls of the .grooves at'either side of the slots, securely locking the blades against either radial or lateral displacement.
  • a blade cannot move respectively to the packing piece owing to the fact that the contacting faces between the blade root and packing piece are of irregular shape.
  • This construc- "tion produces a very secure fastening of the blades to the body of the rotor, and one which is quite inexpensive. It is also possible to replace a broken or. worn blade with little trouble, as compared with the security and strength of the built-up structure.
  • outer ends of the blades may be shrouded in any desired manner as isusual in structures of this sort.
  • a blade fastening device the combination with a rotor body having transverse slots in its periphery, and grooves in its sides intersecting said slots above their bottom, of blades provided with roots of irregular cross-section fitting in said sl0ts, packing strips filling said slots at one side of'said roots, said roots and packing stripsbeing interlocked with the walls of said grooves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

W. J. A. LONDON, G. H. PLAINE & R. C. ALLEN.
APPLICATION FILED OCT-1, 1913.
WITNESSES.-
TURBINE BLADING.
Patented Aug. 10, 1915..
i Hi I INVENTORJ Wjlliam JA. Lqmdon qeorge if. Plazne:
RoberiC'.A Lien: BY
J1EE 4% F84; ATTORNEY.
ED ESTATES PATENT WILLIAM .A. LONDON, GEORGE HUNT-ER PLAINE, AND ROBERT C. ALLEN, OF HART- roan, CONNECTICUT, ASSIGNORS TO THE TERRY STEAM TURBINE COMPANY, or
HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.
TURBINE-BLADING.
Specification of Letters Patent.
Patented Aug. 10,1915.
Application filed October 1, 1913. Serial No. 792,774.
To all whom it may concern:
Be it known that we, WILLIAM J. A. LoN- DON and GEORGE .HUNTER PLAINE, subjects of the King of England, and residents of Hartford, county of- Hartford, State of Connecticut, and ROBERT C. ALLEN, a citizen of the United States, and resident of Hartford, county of Hartford, State of Connecticut, have invented certain new and use- Referring to the drawings, a denotes the body of the rotor, the periphery of Which is transversely slotted at regular intervals, as indicated at b. In each face of the rotor near its edge is a circumferential groove 0.
(1 denotes a blade or vane, and e the root which is fiat on its front face and of irregular formation on its rear face. The thickness of'the root is less than the width of the slot in which it fits, and a packing piece 7 is fitted into the slot back of the root, the front face of the packing piece being shaped to correspond with the rear face of the root, andthe rear face of the packing piece being flat to fill in the slot. The edges of the packing piece and root extend into the grooves c on the front and rear face of the rotor.
After all the blades have been assembled with their packing pieces, a setting tool spreads the roots and packing pieces into the grooves so that they lap the walls of the .grooves at'either side of the slots, securely locking the blades against either radial or lateral displacement. Of course a blade cannot move respectively to the packing piece owing to the fact that the contacting faces between the blade root and packing piece are of irregular shape. This construc- "tion produces a very secure fastening of the blades to the body of the rotor, and one which is quite inexpensive. It is also possible to replace a broken or. worn blade with little trouble, as compared with the security and strength of the built-up structure.
Of course it is understood thatthe outer ends of the blades may be shrouded in any desired manner as isusual in structures of this sort.
\Ve claim as our invention:
1. In a blade-fastening d'evice, thecornbination with a rotor body having transverse peripheral slots, and grooves in the sides intersecting the slots, of blades whose roots are located in the slots and packing strips located in the slots at one side of the roots, said roots and-packing strips being upset to interlock with the walls of the grooves.
2. In a blade fastening device, the combination with a rotor body having transverse slots in its periphery, and grooves in its sides intersecting said slots above their bottom, of blades provided with roots of irregular cross-section fitting in said sl0ts, packing strips filling said slots at one side of'said roots, said roots and packing stripsbeing interlocked with the walls of said grooves.
3. In a blade fastening device, the com' bination with a rotor body having transverse peripheral slots with straight walls,
of blade roots and packing strips fitting'in and filling said slots,the contacting faces of said roots and packing strips being of irregular contour, the edges of said roots and packing strips being displaced within the grooves to interlock with the walls thereof. 7 y
4. In a blade fastening devicgthe com bination with a rotor body having traits verse peripheral slots and grooiljes in the sides intersecting the slots, of .blade roots I and packing strips fitti'=g in and filling said slots, said packing Sti'iPS being split and rolled over to interlock with the walls of the grooves.
VILLIAM J. A. LONDON. GEORGE HUNTER PLAINE. ROBERT C. ALLEN.
Witnesses:
ARTHUR E. JoNns, BENJ. BowNn.
US79277413A 1913-10-01 1913-10-01 Turbine-blading. Expired - Lifetime US1149658A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US79277413A US1149658A (en) 1913-10-01 1913-10-01 Turbine-blading.

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US79277413A US1149658A (en) 1913-10-01 1913-10-01 Turbine-blading.

Publications (1)

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US1149658A true US1149658A (en) 1915-08-10

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638312A (en) * 1946-12-13 1953-05-12 Int Harvester Co Turbine wheel
US2667327A (en) * 1950-06-14 1954-01-26 Westinghouse Electric Corp Rotor construction
US2761648A (en) * 1951-09-18 1956-09-04 A V Roe Canada Ltd Rotor blade locking device
US2786648A (en) * 1950-04-04 1957-03-26 United Aircraft Corp Blade locking device
US3073096A (en) * 1959-02-09 1963-01-15 Carrier Corp Apparatus for treating air

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638312A (en) * 1946-12-13 1953-05-12 Int Harvester Co Turbine wheel
US2786648A (en) * 1950-04-04 1957-03-26 United Aircraft Corp Blade locking device
US2667327A (en) * 1950-06-14 1954-01-26 Westinghouse Electric Corp Rotor construction
US2761648A (en) * 1951-09-18 1956-09-04 A V Roe Canada Ltd Rotor blade locking device
US3073096A (en) * 1959-02-09 1963-01-15 Carrier Corp Apparatus for treating air

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