机械与电子2025，Vol.43Issue(12)：18-23,6.
考虑气固两相流颗粒团聚效应的输灰系统最佳输送流速控制算法
Optimal Conveying Flow Rate Control Algorithm for Ash Conveying System Considering the Agglomeration Effect of Gas-solid Two-phase Flow
摘要
Abstract
To address the issue of particle agglomeration effects in gas-solid two-phase flow altering the local flow field distribution,causing flow field unevenness,and thereby affecting the accuracy of flow velocity control,we propose an optimal conveying flow velocity control algorithm for ash conveying sys-tems that takes into account the particle agglomeration effects in gas-solid two-phase flow.Based on the working characteristics of the ash conveying system,this study established a conveying model of the ash conveying system,and derived the local relationship between the flow velocity of the mixture of clean water and sand water in the pipeline by introducing a transfer function.This study used simulation software to establish a particle collision model,and combined the single particle motion equation and the mass conser-vation equation to numerically simulate the particle agglomeration effect in gas-solid two-phase flow.A particle spatial frequency spectrum wave amplitude change diagram was constructed to obtain particle in-formation,which was used to monitor the conveying flow velocity of the ash conveying system.A PID con-trol model was constructed,and the model was optimized using loss function and gradient descent method to obtain the optimal conveying flow velocity adjustment amount,thereby achieving control of the optimal conveying flow velocity of the ash conveying system.The experimental results show that the conveying flow velocity deviation under the control of this algorithm was less than 0.3 m/s,displaying high control accuracy,and it can effectively ensure the stable operation of the ash conveying system.关键词
气固两相流/颗粒团聚/输灰系统/流速控制/质量守恒Key words
gas-solid two-phase flow/particle agglomeration/ash conveying system/flow rate con-trol/conservation of mass分类
信息技术与安全科学引用本文复制引用
景杰..考虑气固两相流颗粒团聚效应的输灰系统最佳输送流速控制算法[J].机械与电子,2025,43(12):18-23,6.基金项目
山西漳山发电有限责任公司项目(DL2024134) （DL2024134）
