Investigation of transient gas-solid flow characteristics and particle erosion in a square gate valve

Ma, Guangfei; Lin, Zhe; Zhu, Zuchao

doi:10.1016/j.engfailanal.2020.104827

Cited by 14 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the Lagrangian particle tracking method, Newton's second law is used to calculate the trajectory and velocity of the particles. The equation of particle motion is as follows [22][23][24]:…”

Section: Discrete Phase Modelmentioning

confidence: 99%

Failure analysis and numerical simulation of the regulating valve in the black- water treatment system

Cui,

Chen,

Liu

et al. 2023

Preprint

View full text Add to dashboard Cite

The black-water regulating valve is very easy to be damaged due to the erosion of the key components, such as valve spool and valve seat. This work presents the failure analysis of the spool and seat of regulating valve in the black-water treatment system. Scanning electron microscopy (SEM) and X-ray energy dispersive spectrometer (EDS) were used to detect the morphology and chemical compositions of failure valve samples. The computational fluid dynamics (CFD) method was also adopted to simulate the medium flow characteristics in black-water regulating valve. The results show that most erosion areas of the valve occur at the spool-seat throttle zone. The erosion profile is mainly manifested in plastic deformation pits, cutting abrasions, furrows, pinhole pits and impact pits. The particles and cavitation bubbles move toward the throttle zone driven by black-water medium, causing particles impact and bubbles collapse. The valve suffered severe particle erosion and cavitation erosion under the particle impact and bubble collapse, finally resulting in its failure.

show abstract

Section: Discrete Phase Modelmentioning

confidence: 99%