WO2013150336A1 - Method of securing of blades in blade ring with securing wire - Google Patents

Method of securing of blades in blade ring with securing wire Download PDF

Info

Publication number
WO2013150336A1
WO2013150336A1 PCT/IB2012/051645 IB2012051645W WO2013150336A1 WO 2013150336 A1 WO2013150336 A1 WO 2013150336A1 IB 2012051645 W IB2012051645 W IB 2012051645W WO 2013150336 A1 WO2013150336 A1 WO 2013150336A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
securing
ring
blade ring
blades
Prior art date
Application number
PCT/IB2012/051645
Other languages
French (fr)
Inventor
Vlastimil Sedlacek
Original Assignee
Vlastimil Sedlacek
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 Vlastimil Sedlacek filed Critical Vlastimil Sedlacek
Priority to PCT/IB2012/051645 priority Critical patent/WO2013150336A1/en
Priority to BR212012016715U priority patent/BR212012016715U2/en
Priority to CN2012800006365A priority patent/CN102869890A/en
Publication of WO2013150336A1 publication Critical patent/WO2013150336A1/en

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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/14—Two-dimensional elliptical
    • F05D2250/141—Two-dimensional elliptical circular

Definitions

  • the invention concerns a method of securing stator blades in a blade ring.
  • Blades in a blade ring must be fixed after insertion in place. At present there are two most common methods of this fixation.
  • the first is based on the fact that the blade ring material is about 10% thicker than the required final thickness of the blade ring body.
  • the reinforced circular material is used for turning a ring of square profile (securing ring).
  • a groove is turned in the rest of the blade ring reaching as far as the bodies of the inserted blades.
  • the turned square profile is inserted in the groove to fix the blades (fig. 2).
  • Disadvantages of this method include the fact that the securing ring is made of the blade ring body, which result in plenty of waste. In addition this process is time-consuming and technology intensive, which makes the fixation of the blades in the blade ring body more expensive.
  • the second known method (fig. 3) is fixation of the blades in the blade ring with a lock pin.
  • each blade must be co-drilled with the blade for the lock pin to be inserted in the matching ring and blade holes.
  • This method is also time-consuming and the individual steps are demanding for the worker.
  • the method of fixation of a blade in a blade ring with a securing wire comprises a groove milled in the blade body during its manufacture and corresponding to the diameter of the circular profile of the securing wire. Then a groove is turned in the blade ring body corresponding to the diameter of the securing wire, starting openings are drilled and blade profiles are cut in the blade ring, then the blades with the turned grooves are inserted in the blade ring and finally the securing wire is placed in position (fig. 1).
  • fig. 1 shows fixation of the blades with the securing wire using this method
  • fig. 2 shows blade securing with a securing ring made of the blade ring body
  • fig. 3 shows blade securing in the blade ring with lock pins.
  • the method of securing a blade in a blade ring with a securing wire is implemented as follows: When a blade 1 is made a groove is milled in the blade body 1 corresponding to the diameter of the circular profile of the securing wire 3, then a groove is turned in the blade ring 2 with the diameter corresponding to the securing wire diameter 3, then starting openings are drilled and blade profiles I are cut in the blade ring 2, then the blades 2 with the milled grooves are inserted in the ring and finally the securing wire 3 is placed in position resulting from winding a bar with circular profile into the circle shape.
  • the body of the blade ring 2 is about 10% thinner, therefore the thickness of the material for the blade ring manufacture 2 corresponds to the final thickness of the ring 2.
  • a groove is turned into this body with the inner diameter corresponding to the diameter of the circular profile of the securing wire 3.
  • the blades are then fixed by pushing this securing wire 3 into the groove passing both the blade body I and the blade ring body 2.
  • Manufacture of the securing wire 3 comprises winding the wire and not cutting the wire from the material for the blade ring manufacture.
  • the invention may be used for fixation of all types of turbine and compressor stator blades to prevent their move.

Landscapes

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

Abstract

A method of securing a blade in a blade ring comprising the following: When a blade is made a groove is milled in the blade body corresponding to the diameter of the circular profile of the securing wire, then a groove is turned in the blade ring with the diameter corresponding to the securing wire diameter, then starting openings are drilled and blade profiles are cut in the blade ring, then the blades with the milled grooves are inserted in the ring and finally the securing wire is placed in position resulting from winding a bar with circular profile into the circle shape.

Description

Method of Securing of Blades in Blade Ring with Securing Wire Technical Fields
The invention concerns a method of securing stator blades in a blade ring. Background Arts
Blades in a blade ring must be fixed after insertion in place. At present there are two most common methods of this fixation.
The first is based on the fact that the blade ring material is about 10% thicker than the required final thickness of the blade ring body. The reinforced circular material is used for turning a ring of square profile (securing ring). A groove is turned in the rest of the blade ring reaching as far as the bodies of the inserted blades. The turned square profile is inserted in the groove to fix the blades (fig. 2). Disadvantages of this method include the fact that the securing ring is made of the blade ring body, which result in plenty of waste. In addition this process is time-consuming and technology intensive, which makes the fixation of the blades in the blade ring body more expensive.
The second known method (fig. 3) is fixation of the blades in the blade ring with a lock pin. In this case each blade must be co-drilled with the blade for the lock pin to be inserted in the matching ring and blade holes. This method is also time-consuming and the individual steps are demanding for the worker.
Disclosure of Invention
The method of fixation of a blade in a blade ring with a securing wire pursuant to this invention comprises a groove milled in the blade body during its manufacture and corresponding to the diameter of the circular profile of the securing wire. Then a groove is turned in the blade ring body corresponding to the diameter of the securing wire, starting openings are drilled and blade profiles are cut in the blade ring, then the blades with the turned grooves are inserted in the blade ring and finally the securing wire is placed in position (fig. 1).
The advantages of the solution pursuant to this invention above all include the fact that the blade ring need not be clamped and turned again, being completely finished after the first operation, and that the securing wire is common consumer goods with minimum manufacturing costs. This represents a big economic asset consisting in material and time saving while turning the blade ring.
Brief Description of Drawings
The technical solution will be explained in detail with the help of a drawing where fig. 1 shows fixation of the blades with the securing wire using this method, fig. 2 shows blade securing with a securing ring made of the blade ring body, and fig. 3 shows blade securing in the blade ring with lock pins.
Made for Carrying out the Invention
The method of securing a blade in a blade ring with a securing wire is implemented as follows: When a blade 1 is made a groove is milled in the blade body 1 corresponding to the diameter of the circular profile of the securing wire 3, then a groove is turned in the blade ring 2 with the diameter corresponding to the securing wire diameter 3, then starting openings are drilled and blade profiles I are cut in the blade ring 2, then the blades 2 with the milled grooves are inserted in the ring and finally the securing wire 3 is placed in position resulting from winding a bar with circular profile into the circle shape.
The body of the blade ring 2 is about 10% thinner, therefore the thickness of the material for the blade ring manufacture 2 corresponds to the final thickness of the ring 2. A groove is turned into this body with the inner diameter corresponding to the diameter of the circular profile of the securing wire 3. The blades are then fixed by pushing this securing wire 3 into the groove passing both the blade body I and the blade ring body 2. Manufacture of the securing wire 3 comprises winding the wire and not cutting the wire from the material for the blade ring manufacture.
Industrial Applicability
The invention may be used for fixation of all types of turbine and compressor stator blades to prevent their move.

Claims

P A T E N T C L A I M S
1. A method of fixation of a blade in a blade ring with a securing wire characterised in that during the blade (1) manufacture a groove is milled in the blade body (1) corresponding to the diameter of the circular profile of the securing wire (3), then a groove is turned in the blade ring (2) corresponding to the diameter o the securing wire (3), then starting openings are drilled and blade (1) profiles are cut in the blade ring (2), then the blades (1) with the milled grooves are inserted in the ring and finally the securing wire (3) is placed in position, obtained by winding a bar with circular profile.
PCT/IB2012/051645 2012-04-04 2012-04-04 Method of securing of blades in blade ring with securing wire WO2013150336A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/IB2012/051645 WO2013150336A1 (en) 2012-04-04 2012-04-04 Method of securing of blades in blade ring with securing wire
BR212012016715U BR212012016715U2 (en) 2012-04-04 2012-04-04 "method for attaching paddle ring paddles with gripping wire"
CN2012800006365A CN102869890A (en) 2012-04-04 2012-04-04 Method for fixing blade a blade ring by using fixed cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2012/051645 WO2013150336A1 (en) 2012-04-04 2012-04-04 Method of securing of blades in blade ring with securing wire

Publications (1)

Publication Number Publication Date
WO2013150336A1 true WO2013150336A1 (en) 2013-10-10

Family

ID=47447738

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/051645 WO2013150336A1 (en) 2012-04-04 2012-04-04 Method of securing of blades in blade ring with securing wire

Country Status (3)

Country Link
CN (1) CN102869890A (en)
BR (1) BR212012016715U2 (en)
WO (1) WO2013150336A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1606029A (en) * 1926-11-09 Eouse electric
US2445154A (en) * 1944-03-04 1948-07-13 Ingersoll Rand Co Blade mounting
FR1145452A (en) * 1956-01-30 1957-10-25 Snecma Turbo-machine housing
DE10346240A1 (en) * 2003-10-06 2005-04-21 Alstom Technology Ltd Baden Component, e.g. blade, for gas turbine consists of two components connected via intermediate gap with metal oxide coating on one surface, to interrupt heat transfer from one component to second one
DE10346263A1 (en) * 2003-10-06 2005-04-28 Alstom Technology Ltd Baden Turbine blade root fastening has form-locking component constructed as separate component with regard to blade root and blade carrier and engages simultaneously in longitudinal slots in first and second anchoring contours
DE102004006706A1 (en) * 2004-02-11 2005-08-25 Mtu Aero Engines Gmbh Damping arrangement for vanes, especially for vanes of a gas turbine or aircraft engine, comprises a spring element in the form of a leaf spring arranged between an inner shroud of the vanes and a seal support
US20100061845A1 (en) * 2006-10-28 2010-03-11 Daniela Turzing Guiding device of a flow machine and guide vane for such a guiding device
EP2412929A1 (en) * 2009-03-26 2012-02-01 IHI Corporation Cmc turbine stator vane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697284B1 (en) * 1992-10-27 1995-01-27 Europ Propulsion Method for manufacturing a turbine wheel with inserted blades and wheel obtained by the method.
EP2022944A1 (en) * 2007-07-27 2009-02-11 Siemens Aktiengesellschaft Blade fixation in a circumferential groove by means of a curable ceramic mass
US8894370B2 (en) * 2008-04-04 2014-11-25 General Electric Company Turbine blade retention system and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1606029A (en) * 1926-11-09 Eouse electric
US2445154A (en) * 1944-03-04 1948-07-13 Ingersoll Rand Co Blade mounting
FR1145452A (en) * 1956-01-30 1957-10-25 Snecma Turbo-machine housing
DE10346240A1 (en) * 2003-10-06 2005-04-21 Alstom Technology Ltd Baden Component, e.g. blade, for gas turbine consists of two components connected via intermediate gap with metal oxide coating on one surface, to interrupt heat transfer from one component to second one
DE10346263A1 (en) * 2003-10-06 2005-04-28 Alstom Technology Ltd Baden Turbine blade root fastening has form-locking component constructed as separate component with regard to blade root and blade carrier and engages simultaneously in longitudinal slots in first and second anchoring contours
DE102004006706A1 (en) * 2004-02-11 2005-08-25 Mtu Aero Engines Gmbh Damping arrangement for vanes, especially for vanes of a gas turbine or aircraft engine, comprises a spring element in the form of a leaf spring arranged between an inner shroud of the vanes and a seal support
US20100061845A1 (en) * 2006-10-28 2010-03-11 Daniela Turzing Guiding device of a flow machine and guide vane for such a guiding device
EP2412929A1 (en) * 2009-03-26 2012-02-01 IHI Corporation Cmc turbine stator vane

Also Published As

Publication number Publication date
CN102869890A (en) 2013-01-09
BR212012016715U2 (en) 2017-09-26

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