EP1980366B1 - Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles - Google Patents

Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles Download PDF

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Publication number
EP1980366B1
EP1980366B1 EP07007545A EP07007545A EP1980366B1 EP 1980366 B1 EP1980366 B1 EP 1980366B1 EP 07007545 A EP07007545 A EP 07007545A EP 07007545 A EP07007545 A EP 07007545A EP 1980366 B1 EP1980366 B1 EP 1980366B1
Authority
EP
European Patent Office
Prior art keywords
blasting
blade
seal
cubicle
blasting device
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.)
Active
Application number
EP07007545A
Other languages
German (de)
English (en)
Other versions
EP1980366A1 (fr
Inventor
Falko Hoelzel
Jean Müller
Michael Pape
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP07007545A priority Critical patent/EP1980366B1/fr
Priority to AT07007545T priority patent/ATE448908T1/de
Priority to DE502007002038T priority patent/DE502007002038D1/de
Priority to US12/082,434 priority patent/US7596978B2/en
Publication of EP1980366A1 publication Critical patent/EP1980366A1/fr
Application granted granted Critical
Publication of EP1980366B1 publication Critical patent/EP1980366B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass

Definitions

  • the present invention relates to a blasting device for blasting a part of a turbine blade having a blade root, a blade platform and an airfoil, with a blast cabin having an insertion opening, a blasting device for discharging accelerated blasting material into the blast cabin, and a support for the turbine blade. wherein a seal is provided which seals a gap between the holder and the airfoil in the region of the insertion opening and thus prevents the escape of the dust emerging from the blasting cabin during blasting.
  • Such a jet device is in the US 2006/0021410 A1 described.
  • This device is intended to radiate the blade root and the blade root facing side of the blade platform of a turbine blade.
  • it has a blasting cabin, which is provided with an insertion opening, through which the part of the turbine blade to be blasted can be introduced into the blasting cubicle.
  • a holder is provided, which fixes the turbine blade in the inserted state.
  • the holder is provided with seals which seal a gap formed between the blade platform and the holder from the outside of the cabin.
  • a major problem when blasting turbine blades is that the resulting dust can escape from the cabin and get onto the ceramic coating of the airfoil. This affects their function and life.
  • seals are provided to prevent the escape of dust from the chamber.
  • the seals are attached to the lower end of the bracket and thus designed for a cabin outside sealing of the gap.
  • this construction does not provide sufficient security that the cabin is completely sealed dust-tight.
  • the seal according to the invention is arranged on the inside of the cabin, the penetration of dust into the gap is already effectively prevented. In this way it is ensured that no dust from the cabin can get to the blade.
  • the holder may have a contact surface against which the surface of the blade platform pointing out of the blasting cubicle rests at least partially. It is advantageous that the turbine blade undergoes additional stabilization in the holder.
  • the holder may also be designed to receive the turbine blade suspended vertically. In this case, gravity contributes to the stabilization of the turbine blade in the holder.
  • the attachment shields the seal against the blasting material present in the cabin. As a result, in particular the life of the seal is increased because it is no longer worn during the blasting process.
  • both components can be connected to each other by a fastening device.
  • a fastening device For example, screws or clamping means of various types are suitable.
  • the intermediate seal is compressed and thus pressed into the gap between the holder and the blade platform, whereby the degree of sealing is further increased.
  • the seal is attached to the attachment. As a result, a quick, precise and simultaneous arrangement of the essay and the seal is possible. In addition, slipping of the seal is prevented. In order to facilitate the replacement and maintenance of the seal, it may in particular be removably attached to the attachment.
  • the part of the turbine blade to be radiated can be formed at least from its blade root and optionally from regions of the blade root facing side of the blade platform.
  • the blasting device may have a covering element which rests against the underside of the blade base which is overhead when suspended. If the turbine blade has cooling air holes, the associated air inlet openings of the cooling air channels are located in the underside of the blade root. Since the cooling air ducts are often provided with sensitive coatings, it is necessary to prevent the ingress of dust during the blasting process. According to this embodiment of the invention, the air inlet openings are closed by the cover.
  • clamping elements that allow a distortion of the cover with the attachment and / or the holder.
  • the cover is fixed in its spatial position and on the other hand clamped the turbine blade in the holder.
  • a coarse-pored foam can be used as the sealing material. This material is particularly suitable because it ensures both a high density and on the other hand has sufficient resistance and thus a long life.
  • the seal can be 1 to 15 mm thick. If the seal is less than 1 mm thick, there is a risk of insufficient sealing, whereas seals with a thickness of more than 15 mm are susceptible to wear. It has been found that thicknesses of 2 to 10 mm and in particular 5 mm are suitable for ensuring a high level of tightness with at the same time low wear.
  • a suction device may also be provided. This removes the resulting dust continuously from the cabin.
  • FIG. 1 a schematic representation of a blasting device 1 according to the invention for blasting a part of a turbine blade 2 is shown.
  • the turbine blade 2 consists of a blade root 3, a blade platform 4 and an airfoil 5.
  • the blasting device 1 has a blasting cabin 6, a blasting device, not shown, for dispensing accelerated blasting material and a holder 7 for the turbine blade 2.
  • an insertion opening 8 is formed, through which the airfoil 5 of the turbine blade 2 is guided.
  • the holder 7 is arranged enclosing the insertion opening 8 inside the blasting cubicle 6, wherein it receives the turbine blade 2 suspended vertically.
  • a contact surface 9 is formed on the holder 7, on which the area of the blade platform 4 pointing from the blasting cubicle 6 abuts in regions.
  • a gap 10 is formed between the holder 7 and the blade platform 4, which extends to the insertion opening 8.
  • This gap 10 is cabin inside sealed by a seal 11, which consists of a coarse-pored foam and 1 to 15 mm thick.
  • the blasting device 1 also has an attachment 12, which overlaps the blade platform 4 and the seal 11 on the inside of the cabin.
  • the seal 11 is protected from the blasting, which increases their life.
  • the seal 11 may be detachably attached to the attachment 12.
  • the holder 7 and the attachment 12 can be connected to each other via a fastening device, not shown.
  • a cover 13 On the upper underside of the blade root 3 is a cover 13 at. It is clamped over here designed as a spring holder clamping elements 14 with the article 12 and thus fixed in its spatial position. In this case, the cover 13 closes not shown, formed in the blade root 3, air inlet openings.
  • a blasting material is emitted into the blasting cubicle 6 at high speed from the blasting device in order to deliver accelerated blasting material.
  • This blasting material impinges on the uncovered areas of the blade root 3 and the blade platform 4.
  • dust is formed, which is prevented by the cover 13 of it, however, penetrate into the air inlet openings of the cooling air ducts.
  • the seal 11 prevents the dust from penetrating into the gap 10, so that the blast cabin 6 as a whole is sealed against the environment in a dustproof manner. This ensures that no dust from the blasting cabin 6 can reach the blade 5.

Claims (12)

  1. Dispositif ( 1 ) de projection pour effectuer une projection sur une partie d'une aube ( 2 ) d'une turbine,
    qui a une emplanture ( 3 ) d'aube, une plateforme ( 4 ) d'aube et une lame ( 5 ) d'aube,
    comprenant une cabine ( 6 ) de projection qui a une ouverture ( 8 ) de chargement,
    un dispositif de projection pour émettre du produit de projection accélérée dans la cabine ( 6 ) de projection et une fixation ( 7 ) de l'aube ( 2 ) de turbine,
    dans laquelle il est prévu une étanchéité ( 11 ) qui rend étanche un intervalle ( 10 ) entre la fixation ( 7 ) et la plateforme ( 4 ) de l'aube dans la partie de l'ouverture ( 8 ) de chargement et empêche ainsi de la poussière créée par la projection de sortir de la cabine ( 6 ) de projection,
    caractérisée en ce que
    l'étanchéité ( 11 ) rend étanche l'intervalle ( 10 ) à partir du côté intérieur de la cabine.
  2. Installation ( 1 ) de projection suivant la revendication 1,
    caractérisée en ce que
    la fixation ( 7 ) a une surface ( 9 ) de contact à laquelle la surface de la plateforme de l'aube, éloignée de la cabine ( 6 ) de projection, s'applique au moins en partie.
  3. Installation ( 1 ) de projection suivant la revendication 2,
    caractérisée en ce que la fixation ( 7 ) est constituée pour recevoir l'aube ( 2 ) de turbine suspendue verticalement.
  4. Installation ( 1 ) de projection suivant l'une des revendications précédentes,
    caractérisée en ce qu'elle a une coiffe ( 12 ) qui recouvre du côté intérieur de la chambre la plateforme ( 4 ) de l'aube et l'étanchéité ( 11 ).
  5. Installation ( 1 ) de projection suivant la revendication 4,
    caractérisée en ce que la coiffe ( 12 ) et la fixation ( 7 ) sont assemblées ensemble par un dispositif de fixation.
  6. Installation ( 1 ) de projection suivant la revendication 4,
    caractérisée en ce que l'étanchéité ( 11 ) est fixée sur la coiffe ( 12 ), notamment en pouvant être retirée.
  7. Installation ( 1 ) de projection suivant l'une des revendications précédentes,
    caractérisée en ce que la partie de l'aube ( 2 ) de la turbine destinée à recevoir une projection est formée au moins par son emplanture ( 3 ) d'aube et le cas échéant par des parties du côté de la plateforme de l'aube, qui est tourné vers l'emplanture ( 3 ) de l'aube.
  8. Installation ( 1 ) de projection suivant la revendication 7,
    caractérisée en ce qu'il est prévu un élément ( 13 ) de recouvrement qui s'applique au côté inférieur de l'emplanture ( 3 ) de l'aube, des ouvertures d'entrée d'air présentent éventuellement dans l'emplanture ( 3 ) de l'aube étant ainsi fermées.
  9. Installation ( 1 ) de projection suivant la revendication 8,
    caractérisée en ce qu'il est prévu des éléments ( 14 ) de blocage pour bloquer l'élément ( 13 ) de recouvrement avec la coiffe ( 12 ) et/ou la fixation ( 7 ).
  10. Installation ( 1 ) de projection suivant l'une des revendications précédentes,
    caractérisée en ce que l'étanchéité ( 11 ) est en une matière mousse à pores grossiers.
  11. Installation ( 1 ) de projection suivant l'une des revendications précédentes,
    caractérisée en ce que
    l'étanchéité ( 11 ) a une épaisseur de 1 à 15 mm,
    notamment de 2 à 10 mm et
    de préférence notamment de 5 mm.
  12. Installation ( 1 ) de projection suivant l'une des revendications précédentes,
    caractérisée en ce que il est prévu dans la cabine ( 6 ) de projection un dispositif d'aspiration de la poussière créée lors de la projection.
EP07007545A 2007-04-12 2007-04-12 Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles Active EP1980366B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP07007545A EP1980366B1 (fr) 2007-04-12 2007-04-12 Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles
AT07007545T ATE448908T1 (de) 2007-04-12 2007-04-12 Anlagen- und vorrichtungskonzept für eine shotpeeninganlage zum verfestigen von gasturbinen laufschaufelfüssen
DE502007002038T DE502007002038D1 (de) 2007-04-12 2007-04-12 Anlagen- und Vorrichtungskonzept für eine Shotpeeninganlage zum Verfestigen von Gasturbinen Laufschaufelfüssen
US12/082,434 US7596978B2 (en) 2007-04-12 2008-04-11 Blasting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07007545A EP1980366B1 (fr) 2007-04-12 2007-04-12 Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles

Publications (2)

Publication Number Publication Date
EP1980366A1 EP1980366A1 (fr) 2008-10-15
EP1980366B1 true EP1980366B1 (fr) 2009-11-18

Family

ID=38382639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07007545A Active EP1980366B1 (fr) 2007-04-12 2007-04-12 Concept d'installation et de dispositif pour une installation de grenaillage destinée à la solidification de turbines de gaz de pieds d'aubes mobiles

Country Status (4)

Country Link
US (1) US7596978B2 (fr)
EP (1) EP1980366B1 (fr)
AT (1) ATE448908T1 (fr)
DE (1) DE502007002038D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502007001920D1 (de) * 2006-05-26 2009-12-17 Siemens Ag Strahlvorrichtung
EP2187005B1 (fr) * 2008-11-14 2015-04-01 Siemens Aktiengesellschaft Procédé de fabrication d'une fixation d'aube de turbine pour un dispositif de détermination de la quantité d'écoulement

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4530861A (en) * 1983-12-19 1985-07-23 General Electric Company Method and apparatus for masking a surface of a blade member
US5792267A (en) * 1997-05-16 1998-08-11 United Technologies Corporation Coating fixture for a turbine engine blade
FR2801236B1 (fr) * 1999-11-18 2001-12-21 Snecma Procede et machine de grenaillage par ultrasons de pieces sur une roue
FR2814099B1 (fr) * 2000-09-21 2002-12-20 Snecma Moteurs Grenaillage transversal par ultrassons des aubes sur un rotor
FR2816537B1 (fr) * 2000-11-16 2003-01-17 Snecma Moteurs Procede et installation de grenaillage par ultrasons des alveoles annulaires d'attache d'aubes sur un rotor
FR2816636B1 (fr) * 2000-11-16 2003-07-18 Snecma Moteurs Grenaillage des sommets des aubes refroidies
FR2816536B1 (fr) * 2000-11-16 2003-01-17 Snecma Moteurs Procede et dispositif de grenaillage par ultrasons des alveoles "axiales" d'attache des aubes sur un rotor
US6863927B2 (en) * 2002-09-27 2005-03-08 General Electric Aviation Service Operation Ptd. Ltd. Method for vapor phase aluminiding of a gas turbine blade partially masked with a masking enclosure
US20060021410A1 (en) * 2004-07-30 2006-02-02 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Shot, devices, and installations for ultrasonic peening, and parts treated thereby
EP1762303B1 (fr) * 2005-09-09 2012-10-17 Siemens Aktiengesellschaft Procédé pour préparer des aubes de turbine en vue de leur revêtement par pulvérisation et support pour fixer de telles aubes
FR2907360B1 (fr) * 2006-10-20 2009-05-22 Sonats Soc Des Nouvelles Appli Procedes et installations de grenailles.

Also Published As

Publication number Publication date
EP1980366A1 (fr) 2008-10-15
US7596978B2 (en) 2009-10-06
DE502007002038D1 (de) 2009-12-31
ATE448908T1 (de) 2009-12-15
US20080295557A1 (en) 2008-12-04

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