Detail publikace

Leakage cause analysis of a flange joint designed according to standards

LOŠÁK, P. LÉTAL, T. BUZÍK, J. NAĎ, M.

Originální název

Leakage cause analysis of a flange joint designed according to standards

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

The design of flanges is linked to the use of relevant standards; in the chemical, petrochemical and energy industries. The modern standards EN 13445 [1], which are focused on design of unfired pressure vessels, are often used to design flanges. There is a danger of possible flange joints leakages in operation. Whether the flange connection is designed with standardized parts where the calculation is not necessary or it is designed by strength calculation according to this standard, such procedure does not ensure that the flange joint is sealed, as will be shown in the article. This situation is, for example, a leak due to insufficient contact pressure on the sealing surfaces. The flange joint undergoes several load-bearing operations. When assembling, the cold flange connection is tightened to the specified pretension. When operating media is introduced, there may be significant changes in stress distribution due to thermal expansion, presenting a transient state between assembly and nominal operation. When temperature stabilizes, the force in the bolts decreases and in this condition, leaks may occur when the flange connection design is inadequate. The aim of this paper is to perform analyses of industrial flange joint designed according to EN 13445 [1], with the priority to analyze flange joint operational conditions and to identify the most probable cause of the leak. Complex structural behavior of the joint will be thoroughly investigated using FEM (finite element method).

Klíčová slova

leakage, flange

Autoři

LOŠÁK, P.; LÉTAL, T.; BUZÍK, J.; NAĎ, M.

Vydáno

5. 9. 2017

Nakladatel

Institute of Metals and Technology, Ljubljana, Slovenia

Místo

Ljubljana

ISBN

978-961-94088-1-0

Kniha

25th INTERNATIONAL CONFERENCE ON MATERIALS AND TECHNOLOGY

Číslo edice

1

Strany od

123

Strany do

123

Strany počet

1

BibTex

@misc{BUT140612,
  author="Pavel {Lošák} and Tomáš {Létal} and Jiří {Buzík} and Martin {Naď}",
  title="Leakage cause analysis of a flange joint designed according to standards",
  booktitle="25th INTERNATIONAL CONFERENCE ON MATERIALS
AND TECHNOLOGY",
  year="2017",
  edition="1",
  pages="123--123",
  publisher="Institute of Metals and Technology, Ljubljana, Slovenia",
  address="Ljubljana",
  isbn="978-961-94088-1-0",
  note="abstract"
}