Securing blade assortment

Patent metadata

Field	Value
Publication number	US-9695699-B2
Application number	US-201414248067-A
Country	US
Kind code	B2
Filing date	Apr 8, 2014
Priority date	Apr 9, 2013
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A securing plate assortment including multiple different securing plates, the securing plates having different geometric codings. A turbine and method is also disclosed.

First claim

What is claimed is:

1. A securing plate assortment for a blade assembly of a gas turbine, comprising:
a plurality of different securing plates, wherein the different securing plates have a first flange, a second flange, and a connecting web, and wherein the different securing plates have respective different geometric codings situated in respective coding areas;
wherein, in each of the different securing plates, the first flange or the second flange has the respective coding area;
and wherein each respective coding area is situated on a first surface of the first or second flange facing away from the blade assembly and/or on an edge joining the first surface with a surface facing the blade assembly; and
wherein the different geometric codings include codings on or through the first surface, or codings on the edge.

2. The securing plate assortment as recited in claim 1 wherein the geometric codings differ in terms of number or shape or size of recesses or elevations.

3. The securing plate assortment as recited in claim 1 wherein different securing plates have the respective coding areas situated so as to correspond to each other, whose codings differ in terms of the number or shape or size of recesses or elevations.

4. A gas turbine comprising a securing plate assortment as recited in claim 1 and at least two turbine stages on which different securing plates are situated, each having different geometric codings.

5. The securing plate assortment as recited in claim 1 wherein each of the different securing plates include a functional area for supporting or securing the blade assembly and the respective coding area.

6. The securing plate assortment as recited in claim 5 wherein the respective coding area is situated differently from the functional area.

7. The securing plate assortment as recited in claim 6 wherein the respective coding area is spaced apart from the functional area.

8. The securing plate assortment as recited in claim 1 wherein at least one of the flanges or the connecting web of a first securing plate of the plurality of different securing plates having a functional area designed differently than the corresponding functional area of a second securing plate of the plurality of different securing plates.

9. The securing plate assortment as recited in claim 8 wherein the connecting webs of different securing plates have different longitudinal extensions or widths.

10. The securing plate assortment as recited in claim 8 wherein the connecting web of the first securing plates has a further coding area.

11. A method for assembling a blade assembly of a gas turbine, comprising selecting one of the securing plates from the securing plate assortment as recited in claim 1 based on the geometric coding and joining the selected securing plate to the blade assembly.

12. The method as recited in claim 11 further comprising assigning securing plates having different geometric coding to different mounting sites on the turbine; and joining the selected securing plate to the assigned mounting site on the turbine.

13. The method as recited in claim 11 wherein, prior to joining the blade assembly and securing plate with respect to each other, checking whether a securing plate assigned to the blade assembly was mounted.

14. The method as recited in claim 11 wherein the gas turbine includes at least two turbine stages assigned different securing plates.

Assignees

• MTU Aero Engines AG

Inventors

• Pernleitner Martin
• Stanka Rudolf
• Schill Manfred

Classifications

• F01D5/32 Primary

  Locking, e.g. by final locking blades or keys · CPC title

• F05D2230/60

  Assembly methods · CPC title

• F01D5/323 Primary

  Locking of axial insertion type blades by means of a key or the like parallel to the axis of the rotor · CPC title