Paper Title:
Investigation into Leakage Behavior of Bolted Flanged Connection with Octagonal Gasket
  Abstract

Structural strength and leakage failures are two types of main failures of the bolted flanged connection with octagonal gasket, and they are related to the gasket contact stress and gasket effective contact width to a great extent. The deformation behavior of connection subjected to various bolt loads and medium pressures is studied by numerical simulation. The distribution of the gasket actual contact stress, the change of the gasket average contact stress and gasket effective contact width are discussed. The relationship among the gasket average contact stress, the gasket effective contact width, bolt load and medium pressure are obtained. A model for predicting the leakage rate of the sealing connection with octagonal gasket is developed. Research indicates that the gasket actual contact stress distributes non-uniformly, and at gasket outer flank it is much larger than that at gasket inner flank. Both the gasket average contact stress and the gasket effective contact width increase with increasing bolt load and medium pressure. The leakage rate is largely related to working conditions, gasket contact stress, gasket effective contact area, and so on. The leakage rate decreases with increasing gasket effective contact area and gasket average contact stress, and it increases linearly with increasing medium pressure. The leakage through the octagonal gasket connection shows the characteristic of the laminar flow of incompressible viscous fluid.

  Info
Periodical
Advanced Materials Research (Volumes 44-46)
Edited by
Z.Y. Shen, M.N. James, W.D. Li, and Y.X. Zhao
Pages
165-171
DOI
10.4028/www.scientific.net/AMR.44-46.165
Citation
H. Q. Zhou, B. Q. Gu, "Investigation into Leakage Behavior of Bolted Flanged Connection with Octagonal Gasket", Advanced Materials Research, Vols. 44-46, pp. 165-171, 2008
Online since
June 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xin Wang, Xue Xia Liu, Xu Yang Cao, Feng Zhou, Yang Zhou, Di Wu
Chapter 3: Advanced Manufacturing Technology (1)
Abstract:By reasonable assumption and considering the friction, contact, preload intensity, load eccentricity, bolt bending, and other nonlinear...
1564
Authors: Wen Jian Yang, Xiao Ming Huang, Guo Liang Xu, Xiang Kui Lv
Chapter 2: Fluid Mechanics and its Applications
Abstract:To investigate the influence of the roughness characteristics of the metallic gasket on the gas leakage rate, a mathematical model of a rough...
162