Analysis of Influence Factors on Sealing Effect of W-shaped Metal Seal Ring in Aero Engine

Abstract

In a certain pressure difference and the seal surface of the mechanical surface hologymorp, the W-shaped seal ring sealing effect is closely related with the flange seal area. Reasonable select the seal ring structure parameters and increase the area between seal ring and flange can achieve the purpose of improving seal effect. By using the finite element analysis software ABAQUS the influence of main structural parameters and pre-tightening amount on the sealing area of W-ring and flange are simulated. Results show that the outer radius, pre-tightening amount and wall thickness can influence the sealing area between the parts and flange. The wall thickness and the outer radius of the seal ring are of greater influence for the contact area between the seal ring and flange. In the design process the seal effect and stiffness elasticity should be considered and the wall thickness and outer radius size should be reasonable selected.

Keywords

• aero engine
• w-shaped metal seal ring
• seal effect
• seal area