热力发电2023，Vol.52Issue(12)：147-156,10.DOI:10.19666/j.rlfd.202305078
四分仓回转式空气预热器热力特性及漏风数值模拟
Thermal characteristics and air leakage numerical simulation of four-compartment rotary air preheater
摘要
Abstract
To solve the problem of excessive air leakage from the four-compartment air preheater,a four-compartment rotary air preheater of a 1 000 MW power plant is used as the study object to investigate the thermal characteristics,rotor thermal deformation and air leakage of the air preheater,by combining theoretical analysis with numerical simulation.The numerical simulation results show that,for every 1%increase in air leakage rate of the 1 000 MW unit,the heat transfer efficiency of air preheater will be reduced by 1.13%,and the power plant will consume 3 604 tons of standard coal more on average per year.There are large temperature gradients in the axial and circumferential directions inside the air preheater,and most of the corrosion and deposition areas are distributed in the low temperature section.There are large differences in rotor thermal deformation during different operating conditions of the air preheater,and the maximum thermal deformation occurs on the secondary air side.It is necessary to make corresponding adjustments according to the thermal deformation characteristics of different positions of the rotor when setting the sealing system.关键词
四分仓回转式空气预热器/热力特性/转子热变形/漏风控制/数值模拟Key words
four-compartment rotary air preheater/thermal characteristics/rotor thermal deformation/air leakage control/numerical simulation引用本文复制引用
木巴来克·都尕买提,王刚,王琪,美合日阿依·穆太力普..四分仓回转式空气预热器热力特性及漏风数值模拟[J].热力发电,2023,52(12):147-156,10.基金项目
新疆维吾尔自治区"天池"博士计划(TCBS202006) （TCBS202006）
新疆维吾尔自治区自然科学基金青年基金资助项目(2021D01C089) （2021D01C089）
新疆维吾尔自治区重点研发资助项目(2022B01033-2) （2022B01033-2）
中央引导地方科技发展专项资助项目(ZYYD2022C16) Tianchi Doctoral Program of Xinjiang Uygur Autonomous Region(TCBS202006) （ZYYD2022C16）
Natural Science Foundation of Xinjiang Uygur Autonomous Region(2021D01C089) （2021D01C089）
Key R&D Funded Projects in Xinjiang Uygur Autonomous Region(2022B01033-2) （2022B01033-2）
The Central Government Guides Local Science and Technology Development Special Funding Projects(ZYYD2022C16) （ZYYD2022C16）
