摘要
输油转子泵作为油气集输技术中的关键设备,密封是影响其输送效率和使用寿命的核心。然而高温密封环境常导致其密封结构发生失效,从而引发介质泄漏。提出一种流道散热结构,以改善组合密封的高温工况;优化了二维单向流固热耦合仿真方法,结合仿真与试验研究散热流道对不同转速下组合密封性能的影响规律。结果表明:高温工况下,密封滑环偏磨程度大,翻边现象严重,O形圈永久压缩程度大,导致材料老化,表层脱落现象严重;转速越快,组合密封温度越高,增幅越大,最大增幅约为45%;流道散热结构温度降幅效果高达50%,可有效改善不同转速下组合密封高温工况,减小其应力集中,减少热作用对其影响,减缓其老化速度,并延长其使用寿命。
As the key equipment in oil and gas gathering and transportation technology,the seals of oil transfer rotor pump is the core that affects its transportation efficiency and service life.However,the high temperature sealing environment often leads to the failure of sealing structure,resulting in the medium leakage.A heat dissipation structure of the flow channel was proposed to improve the high temperature working condition of the combined seal.The two-dimensional one-way fluid-solid-thermal coupling simulation method was optimized,and the influence of the heat dissipation flow channel on the performance of combined seals at different speeds was studied by combining simulation and experiment.The results show that under high temperature conditions,the sealing slip ring has a large degree of eccentric wear,serious flanging,large permanent compression of the O-ring,resulting in material aging and serious surface shedding.The faster the speed is,the higher the combined seal temperature is,the greater the increase is,and the maximum increase is about 45%.The cooling effect of the flow channel heat dissipation structure is as high as 50%,which can effectively improve the high temperature working conditions of the combined seal at different speeds,reduce its stress concentration,reduce the influence of heat action,slow down its aging speed,and prolong its service life.
作者
黄志强
刘伯韬
王美玲
王俊杰
米艳梅
HUANG Zhiqiang;LIU Botao;WANG Meiling;WANG Junjie;MI Yanmei(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China)
出处
《润滑与密封》
北大核心
2025年第3期58-67,共10页
Lubrication Engineering
基金
国家自然科学基金项目(51974272)。
关键词
输油转子泵
组合密封
流道散热结构
流固热耦合
密封散热试验
oil transfer rotor pump
combined seal
channel heat dissipation structure
fluid-solid thermal coupling
sealing heat dissipation test
