Experimental inspection of pressure drop rate due to failure in gas transportation pipelines on valve actuator

Mehdi Mahmoodi¹ Mofid Gorji² Naser Meighani³

1) Ph.D., Student, Faculty of Mechanical Engineering, Babol University of Science and Technology,
2) Professor, Faculty of Mechanical Engineering, Babol University of Science and Technology,
3) Head of Design and Engineering Department, Kiasa Company

IOI Code : XYGD-BCHZG
Publication : The 5th International conference of Sciences and Engineering(5icesconf.com)
Abstract :
    Actuators with line break detection system are installed on gas and oil pipelines for several reasons such as zones with no access to national electricity network or impassable conditions or area which need to create passive defence conditions or the protection of ecosystems such as rivers and forests and etc. In this paper, the effect of characteristics parameter such as pipeline pressure drop rate due to line break or line failure on differential pressure between two sides of diaphragm valve in LBD system experimentally was investigated by nitrogen compressed gas. The only variable parameter is pressure drop rate caused by line break when the parameters of orifice diameter and pipeline initial pressure have constant value. More mass of compressed nitrogen gas in pipeline will discharge to atmosphere by increase of pressure drop rate caused by pipeline break.The pressure of line break detection system equals the pipeline pressure at the initial time before pipeline break occurrence.

Keywords : experimental inspection quarter turn actuator pressure drop pipeline break diaphragm valve