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Swirler profile shaped wings

IP.com Disclosure Number: IPCOM000201304D
Original Publication Date: 2010-Nov-10
Included in the Prior Art Database: 2010-Nov-10
Document File: 1 page(s) / 105K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

In industrial turbomachines swirler are used to swirl the intermixture of gases. Until now swirler wings produced using a pressed rectangular plate welded together with a pipe. These are then welded together with other parts into the swirler. The constant thickness and oval shape of the plate lead to high local tensions and limited lifetime. Furthermore the design results in a relatively less stiffness and aerodynamic losses.

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Swirler profile shaped wings

Idea: Daniel Lörstad, Ph.D., SE-Finspång

In industrial turbomachines swirler are used to swirl the intermixture of gases. Until now swirler wings produced using a pressed rectangular plate welded together with a pipe. These are then welded together with other parts into the swirler. The constant thickness and oval shape of the plate lead to high local tensions and limited lifetime. Furthermore the design results in a relatively less stiffness and aerodynamic losses.

A novel solution is proposed, where material thickness variation and shape distribution within specified ranges is used in order to reduce local tensions. Figure 1 shows the previous design in comparison to the proposed design.

An advantage of the proposed solution is the increased component stiffness. In addition the aerodynamic pressure losses around and inside the struts are reduced. Due to thicker wings that resist production deviation and weld effects better than previous design, the tolerances of the final component are improved.

Figure 1: Previous swirler design compared with the new design

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