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Technical Brief

Erosion mechanism and sensitivity parameter analysis of natural gas bending pipeline

[+] Author and Article Information
Jie Zhang

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610500, China; National Joint Engineering Research Center for abrasion control and molding of metal materials, Luoyang, 471000, China
longmenshao@163.com

Hao Yi

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610500, China
1657670445@qq.com

Z Huang

University of Electronic Science and Technology of China, Chengdu, 611731, China
893287414@qq.com

Jiadai Du

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, 610500, China
2845411253@qq.com

1Corresponding author.

ASME doi:10.1115/1.4043011 History: Received December 03, 2018; Revised February 12, 2019

Abstract

In this paper, the impact of sand particles on the pipe wall is predicted by the analysis of the research on bending and continuous pipe combined with particle collision model. The parameters of different particles (particle shape factor, particle velocity, and particle diameter), different bending parameters (angle, diameter and curvature-to-diameter ratio) and the influence of different continuous pipe parameters (assembly spacing and angle) are explored on the erosion and wear mechanism of bending pipeline. The results show that the shape of the particles has a great influence on the wear of the bending pipeline. As the shape factor of the particles decreases, the wear tends to decrease. The bending area is subject to erosion changes as the particle parameters and piping parameters. The increasing of pipe diameter is beneficial to reduce the maximum and the average erosion wear rate. When the bending angle of the pipeline is less than 90°, the maximum erosion wear rate is asically the same. But when it is greater than 90°, it decreases with the increasing of the bending angle. When the assembly angel of double bending pipe is between 0° to 60°, the elbow is subject to severe erosion wear. At the same time, increasing the assembly spacing is beneficial to reduce the erosion wear rate.

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