压力容器2024，Vol.41Issue(6)：67-72,6.DOI:10.3969/j.issn.1001-4837.2024.06.010
低流阻全外压平衡型膨胀节压降仿真计算
Simulation calculation of pressure drop of low flow resistance and full external pressure balanced expansion joint
摘要
Abstract
The temperature of the steam pipeline is high and the laying distance is long,and the compensator is often used to compensate for the thermal expansion of the pipeline.In view of the lack of pressure drop in bypass straight pipe pressure balanced expansion joint,a DN500 low flow resistance and full external pressure balanced expansion joint was proposed,and the pressure drop was calculated by using Fluent software,and the influence of the fluid flow area ratio and the fluid flow direction transition angle on its pressure drop was analyzed.The results show that when the fluid flow area ratio is 2.35 and the fluid flow direction transition angle is 25°～40°,the drag reduction effect is the best,and is better than that of the rotation compensation unit.According to the simulation data fitting,the pressure drop calculation formula of DN500 low flow resistance and full external pressure balanced expansion joint is obtained,which can quickly calculate the pressure drop and provide a theoretical basis for practical engineering application.关键词
低流阻全外压平衡型膨胀节/压降计算/流通面积比/流体流向转变角度Key words
low flow resistance and full external pressure balanced expansion joint/pressure drop calculation/flow area ratio/angle at which fluid flows to transition分类
机械制造引用本文复制引用
黄诗雯,余威,杨玉强,张璐杨,付贝贝,田明明,闫廷来..低流阻全外压平衡型膨胀节压降仿真计算[J].压力容器,2024,41(6):67-72,6.基金项目
洛阳市重大科技创新专项(2301018A) （2301018A）
中国船舶集团有限公司自立科技创新项目(202112ZZ) （202112ZZ）
高技术船舶科研项目(CBG3N21-2-5) （CBG3N21-2-5）
