The study on seal detection of high pressure flange based on metal magnetic memory technology

Author

Jiashun Hu ; Wenyong Sun ; Yongtao Zhao ; Wencai Liu

Author_Institution

CNPC Res. Inst. of Safety & Environ. Technol., Beijing, China

fYear

2014

fDate

20-23 June 2014

Firstpage

229

Lastpage

232

Abstract

High strength flange are widely used in the petroleum and petrochemical industries, flange seal failure may lead to leakage and unexpected incidents. Currently, the flange seal detection in-service lacks an effective method. A lot of tests to study magnetic force behavior and characteristics of flange bolts have been conducted. In test, the bolt axial, radial magnetic field under the tensile stress is analyzed, and force magnetic models for high strength bolt with four different materials are established. Furthermore, an effective detection method for flange seal based on the results of stress detection of bolt has been presented in this paper.

Keywords

fasteners; flanges; high-pressure effects; mechanical testing; petroleum industry; seals (stoppers); tensile strength; bolt axial; flange bolts; flange seal detection; flange seal failure; force magnetic models; high pressure flange; high strength flange; leakage; magnetic force; metal magnetic memory technology; petrochemical industries; petroleum industries; radial magnetic field; stress detection; tensile stress; Fasteners; Flanges; Force; Materials; Safety; Seals; Stress; Bolt; Flange Seal; Metal Magnetic Memory; Stress inspection; Test;

fLanguage

English

Publisher

ieee

Conference_Titel

Nondestructive Evaluation/Testing (FENDT), 2014 IEEE Far East Forum on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-4731-7

Type

conf

DOI

10.1109/FENDT.2014.6928269

Filename

6928269