| MO Li,FENG Man,CHEN Hang,GUO Zhen-xing.Numerical Simulation of Erosion Wear of Oval Disproportionate Tee[J],51(9):151-159 |
| Numerical Simulation of Erosion Wear of Oval Disproportionate Tee |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.09.015 |
| KeyWord:high pressure manifolds erosion wear elliptic section disproportionate tee numerical simulation |
| Author | Institution |
| MO Li |
School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu , China;Sichuan Province Science and Technology Resource Sharing Service Platform for Petroleum and Natural Gas Equipment Technology, Chengdu , China |
| FENG Man |
School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu , China |
| CHEN Hang |
School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu , China |
| GUO Zhen-xing |
School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu , China |
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| Abstract: |
| To solve the problem of high failure rate of high-pressure tee manifolds in the petrochemical industry due to erosion and wear, reduce uncontrollable costs in petrochemical production, and increase the service life of disproportionate tee manifolds and the safety factor of the manifold area. Based on the erosion theory of solid-liquid two-phase flow, a numerical simulation model of erosion and wear of the elliptical cross-section disproportionate tee is established to predict the geometric location of erosion and wear of the elliptical cross-section disproportionate tee during operation. Study the influence of the elliptical shape and azimuth angle of the elliptical cross-section disproportionate tee on the maximum erosion rate of the pipeline. Compare the elliptical cross-section when i=0.85 and the ordinary circular cross-section when i=1. The two manifold three-way pipes are different influence of mass flow rate, particle diameter, liquid flow rate, and fluid viscosity on the maximum erosion rate of the pipeline. The experimental results found that when the included angle is 60°, the maximum erosion rate of the pipeline is the largest. When the included angle is 50° and 70°, the maximum erosion rate of the pipeline is relatively close. When the included angle is 40°, the maximum erosion rate of the pipeline is the smallest; The included angles are all satisfied:when i increases from 0.76 to 1, the maximum erosion rate of the pipeline decreases slowly at first and then increases rapidly. There is a minimum near i=0.85, and the maximum is 3.66 times larger than the minimum; In the process of i=1 decreasing to i=0.76, the erosion rate at the intersecting line gradually decreases, the erosion rate in the middle of the main pipe gradually increases, and the erosion area gradually shifts from the middle of the main pipe to the upper part of the main pipe, with the most severe erosion The area changes from the intersecting line to the swirling vortex area near the intersecting line (low velocity area); when i=1, under different solid particle mass flow rates and main flow rates, the maximum erosion rate is significantly greater than i=0.85, The increase times were 1.9 times and 1.93 times respectively; when i=1, under different solid particle diameters and fluid viscosities, the maximum erosion rate was significantly greater than i=0.85, and the increase times were 2.74 times and 2.36 times, respectively. The following conclusions are drawn when the i value of the elliptical cross-section disproportionate tee increases from 0.76 to 1, the maximum erosion rate first decreases and then increases, and there is a minimum near i=0.85; when i=0.85, the maximum erosion The changing trend of the erosion rate under different working conditions is basically the same as that when i=1, but the reduction effect of the erosion rate is very significant. |
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