A Prediction Method of Wear for Volute Casing of a Centrifugal Slurry Pump

Shi, Baocheng; Pan, Jianpeng; Wu, Lijuan; Zhang, Xingkai; Qiu, Yijie; Zhang, Yindi

doi:10.1155/2020/8847087

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…Wu et al [18] studied the influence of unstable flow characteristics on pump performance and found that relatively high-speed particles would accelerate blade tail wear. Shi et al [19] studied the internal flow field in a solid-liquid centrifugal pump and proposed the wear equation to predict the volute wear caused by solid-liquid two-phase flow. The experimental results showed that the predicted area of high erosion intensity showed good consistency with the experimental area of erosion.…”

Section: Research On Wear Of Solid-liquid Two-phase Centrifugal Pumpmentioning

confidence: 99%

Analysis of Internal Flow and Wear Characteristics of Binary Mixture Particles in Centrifugal Pump Based on CFD-DEM

Wang

Ding

et al. 2022

Processes

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Solid-liquid two-phase flow centrifugal pumps are widely used in many fields closely related to economic development, such as energy exploitation, and the petrochemical industry. Many scholars have studied the influence of solid particles with different parameters on the transportation performance of centrifugal pumps but have mainly focused on the study of low-concentration single-component particles, and the research on the transportation of high-concentration binary mixture particles in centrifugal pumps is insufficient. In this paper, two kinds of glass beads (0.4 mm and 2 mm) were mixed as a solid phase medium, representing small particles and large particles, respectively. The effects of a high concentration (Cv = 10%) of binary mixture particles on the transport and wear characteristics of a solid-liquid centrifugal pump were analyzed by simulation and experiment. Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) and Archard wear model were used for simulation, realized by Fluent software and EDEM software. The results show that the large particles have a greater effect on the performance decline than the small particles, and the increase of the proportion of large particles has a greater effect on the efficiency decline than the head decline. The wear degree of the flow channel in the pump changes obviously with the particle ratio, and the overall wear is small when the particle ratio is 1:2.

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Section: Research On Wear Of Solid-liquid Two-phase Centrifugal Pumpmentioning

confidence: 99%

Analysis of Internal Flow and Wear Characteristics of Binary Mixture Particles in Centrifugal Pump Based on CFD-DEM

Wang

Ding

et al. 2022

Processes

View full text Add to dashboard Cite

show abstract

“…Regardless of how the particle shape and wear mode change, the volute is the main wear part. Shi et al (Shi et al, 2020) performed a numerical study on the internal flow field of a solid-liquid centrifugal pump and used the wear equation to predict the wear of the volute casing due to the solid-liquid twophase flow. The wear mechanism of the volute casing of a centrifugal pump is analyzed in detail and systematically.…”

Section: Introductionmentioning

confidence: 99%

Prediction of sediment wear of francis turbine with high head and high sediment content

Pan

Han

et al. 2023

Front. Energy Res.

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Wear of runner blades is a common problem affecting the operational reliability of turbines with high head and high sediment content. In order to accurately predict the wear of the turbine runner blade, based on the solid-liquid two-phase flow equation and turbulence model, the full channel numerical simulation of the internal water and sediment flow was carried out, and the sediment volume distribution and sand water velocity on the turbine runner blade were obtained. Then, according to the digital simulation results and the operating parameters of the turbine runner, the sediment wear test scheme for the turbine blade material specimen is designed, and the sediment wear test is carried out on the runner material. According to the test results, the sediment wear curve of runner blade material is obtained and applied to numerical simulation, and the main position and wear degree of turbine blade sediment erosion are predicted. The inspection results of the runner blade wear after the unit has operated for a flood season show that obvious wear can be seen at the outlet edge of the lower band of the runner blade, and the wear position and wear amount are basically consistent with the simulation values. The study is of great importance for predicting the wear of turbine runner blades with high drop height and high sediment content, and for turbine maintenance under complex conditions.

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“…Wang et al [1] used a CFD-DEM coupling algorithm to study the spatial distribution and motion characteristics of particles with different sizes, and the effects of particle diameter on the intensity and scale of the vortex in a guide vane were investigated; it was concluded that the existence of particles had a limited effect on the hydraulic performance of the pump in low-concentration fluids. In a numerical study of the internal flow field of the solid-liquid slurry pump, Shi et al [2] analyzed the wear mechanism of the volute wall of a slurry pump and proposed an effective wear equation for estimating the wear strength and wear area of the slurry pump volute. Peng et al [3] analyzed slurry flow under different particle concentrations and volume flows by using the Euler-Euler method, and the effects of particle concentration on flow resistance, reflux, and wall wear were assessed.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Hydraulic Performance and Wear Characteristics of a Slurry Pump

et al. 2021

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The slurry pump is widely used in ore mining, metal smelting, petrochemical, and other industries, mainly to transport fluid media containing large solid particles. Importantly, it is easy to damage the impeller of a slurry pump in the operation process, which greatly affects the performance of the pump. In this paper, a 25 MZ slurry pump was selected as the research object, and the Euler–Euler multiphase flow model was employed to analyze the internal flow characteristics of the slurry pump under the conditions of clear water and solid–liquid two-phase flow. Additionally, the flow characteristics of each part under different flow conditions were studied, and the effects of different particle volume concentrations, particle sizes, and pump speeds on the impeller’s wear characteristics and hydraulic performance were analyzed. In order to verify the reliability and accuracy of the numerical simulation results, clean water and solid–liquid two-phase flow wear tests of the slurry pump were carried out, and the results showed that a high solid volume fraction and solid–phase slip velocity were generated at the junction of the blade leading edge and the rear cover plate, thus leading to easier wear of the blade. Therefore, enhancing the strength of the junction between the blade leading edge and the rear cover plate is beneficial for improving service life and should be considered in the design of slurry pumps.

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A Prediction Method of Wear for Volute Casing of a Centrifugal Slurry Pump

Cited by 9 publications

References 14 publications

Analysis of Internal Flow and Wear Characteristics of Binary Mixture Particles in Centrifugal Pump Based on CFD-DEM

Analysis of Internal Flow and Wear Characteristics of Binary Mixture Particles in Centrifugal Pump Based on CFD-DEM

Prediction of sediment wear of francis turbine with high head and high sediment content

Numerical and Experimental Study of Hydraulic Performance and Wear Characteristics of a Slurry Pump

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