Seal Characteristics and Leakage Model of Metallic Large-Diameter Lenticular Gasket

Author:

Gong Hai Xia1,An Shao Jun1,Liu Yang2,Xu Qing Jiang1

Affiliation:

1. School of Mechanical and Electronical Engineering, Harbin Engineering University, Harbin, 15001, China

2. Harbin Engineering University

Abstract

Through studying on the application principle of existing metal lenticular gasket, the structure design was finished, and design methods and calculating models of lenticular gasket larger than 6inch diameter were attained. Seal mechanism of the lenticular gasket and contact mechanics of the flange joint was analyzed by using finite element method. Stress state, contact width and contact deformation parameters of the lenticular gasket on working was obtained. Based on the analyzing results, leakage forecast model of metal lenticular gasket was presented. In the influencing factors of actual working state, such as inner pressure, outer pressure, medium viscosity, and surface roughness and so on, surface roughness is important, so surface machining precision of an in-use large-diameter lenticular gasket should be improved as far as possible. The conclusions will lay foundation for the future engineering application of large-diameter lenticular gasket.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference8 articles.

1. API RP17A. Design and operation of subsea production systems—General requirements and recommendations(API, Washington, 2006), pp.33-34.

2. ASME B16. 5. Pipe flanges and flanged fittings(ASME, New York, 2009): pp.222-223.

3. ASME . Alternative rules for construction of pressure vessels(ASME, New York, 2007): p.4. 334-4. 336.

4. API 5L. Specification for Line Pipe(API, Washington, 2004): pp.36-45.

5. DIN 2696. Lenticular ring joint gaskets for flanged joints(DIN, Berlin, 1999): pp.2-12.

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