Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

TMF Free Cooled Airfoil

IP.com Disclosure Number: IPCOM000198711D
Original Publication Date: 2010-Aug-23
Included in the Prior Art Database: 2010-Aug-23
Document File: 4 page(s) / 345K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Airfoil walls of vanes of e.g. turbines often have thermo-mechanical fatigue (TMF) problems. To solve this problem laser sintering technology can be used to manufacture the inner geometry according to figures 1 to 5 where a number of thermal joints is placed at chosen sections to avoid thermal stresses caused by the temperature difference between the outer wall and the inner wall.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 97% of the total text.

Page 1 of 4

TMF Free Cooled Airfoil

Idea: Janos Szijarto, SE-Finspong

Airfoil walls of vanes of e.g. turbines often have thermo-mechanical fatigue (TMF) p this problem laser sintering technology can be used to manufactu
figures 1 to 5 where a number of thermal joints is placed at chosen sections to avo caused by the temperature difference between the outer wall and the inner wall.

The main advantage is that this solutio

not limit the life of the product. The thermal joints ca

            roblems. To solve re the inner geometry according to id thermal stresses

                        n offers the possibility to use a tight cooling channel geometry, which gives high cooling airflows and increases the cooling effectiveness. Hence, TMF problems will
n be placed at sections given from MI-calculations. In addition, low weight airfoils can be designed.

Figure 1: TMF free cooled airfoil

© SIEMENS AG 2010 file: 2010J09156.doc page: 1

[This page contains 3 pictures or other non-text objects]

Page 2 of 4

Figure 2: Cooling air distribution of the TMF free cooled airfoil

© SIEMENS AG 2010 file: 2010J09156.doc page: 2

[This page contains 3 pictures or other non-text objects]

Page 3 of 4

Figure 3: Thermal joint function at hot condition

Figure 4: Thermal joint function at cold condition

© SIEMENS AG 2010 file: 2010J09156.doc page: 3

[This page contains 4 pictures or other non-text objects]

Page 4 of 4

Figure 5: Cold to hot transformation of the thermal joint function

© SIEMENS AG 2010 file: 2010J09156.doc page: 4

[This pag...