阵列涡齿氢气循环泵的设计与性能分析  

Design and performance analysis of the array scroll hydrogen recirculation pump

作　　者：王瀚 宋盼盼[1,2] 魏名山 鲁振博[1] 李建威 诸葛伟林 张扬军[2] WANG Han;SONG Panpan;WEI Mingshan;LU Zhenbo;LI Jianwei;ZHUGE Weilin;ZHANG Yangjun(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]清华大学,汽车安全与节能国家重点实验室,北京100084

出　　处：《汽车安全与节能学报》2022年第4期760-769,共10页Journal of Automotive Safety and Energy

基　　金：汽车安全与节能国家重点实验室开放基金课题(KFY2228);国家自然科学基金(51906015)。

摘　　要：为满足燃料电池供氢系统的涡旋式氢气循环泵(HRP)紧凑化与大排量设计需求,提出了基于齿端非对称单圆弧修正的阵列涡齿结构设计方案,并对双齿与三齿涡旋氢气泵进行参数设计与建模。采用二维计算流体力学(CFD)重叠网格方法,分析了转速与压升对双齿氢气泵性能的影响,并比较了双齿与三齿氢气泵性能差异。结果表明:三齿氢气泵压力温度均匀性较好。随着转速提高或压升降低,双齿和三齿氢气循环泵性能均有所提高,当设计转速下的压升从20 kPa增至100 kPa时,效率下降约30%和40%,切向泄漏与排气回流对氢气泵性能的影响较大。在既定排量及体积下,双齿氢气泵性能优于三齿,效率差异最大约19%。A structure scheme of array scroll was proposed based on asymmetric single arc modification to meet the requirements of the compact and large-displacement design of scroll Hydrogen RecirculationPump(HRP) in fuel cell hydrogen supply system. The parametric design and modeling were carried out for the HRP with double scrolls and triple scrolls. Two-dimensional Computational Fluid Dynamics(CFD) oversetmesh method was used to analyze the effects of the rotating speed and pressure rise on the performances of double-scrolls HRP, and the performance differences between the double scrolls HRP and the triple-scrolls HRP were compared. The results show that the pressure and temperature uniformity of triple-scrolls HRP is better. The performance of the double-scrolls HRP and the triple-scrolls HRP are greatly improved with the increasing rotating speeds or the decreasing pressure rising, the efficiency continues to drop by about 30% and 40% respectively when the pressure rises increase from 20 kPa to 100 kPa at design speed, and the tangential leakage and hydrogen backflow have a great impact on the performances of HRP. Under the requirements of design displacement and volume, the performances of the double scrolls HRP are better than that of the triple scrolls HRP, and the maximum efficiency difference is about 19%.

关 键 词：燃料电池 供氢系统 涡旋氢气循环泵(HRP) 阵列涡齿 重叠网格 气动性能 

分 类 号：U463.99[机械工程—车辆工程]