可调向心涡轮增压器调节机构优化设计  

Optimal Design for Regulating Mechanisms of Variable Radial Turbocharger

作　　者：邢世凯[1] 李聚霞[2] 马朝臣[3] 陈立辉[1] 李晴[1] 

机构地区：[1]河北师范大学职业技术学院,石家庄050024 [2]石家庄信息工程职业学院,石家庄050035 [3]北京理工大学机械与车辆学院,北京100081

出　　处：《中国机械工程》2017年第2期139-143,149,共6页China Mechanical Engineering

基　　金：河北省科技支撑计划资助项目(15273703D);河北省高等学校自然科学研究青年基金资助项目(QN20131017;QN2014164);河北师范大学博士基金;应用开发基金资助项目(L2016B15;L2015K08)

摘　　要：提出了一种新型的增压器调节机构设计方案,该设计方案取消了传统增压器调节机构中的喷嘴座或定距套结构,利用3个固定导叶来控制喷嘴环的宽度。该设计方案力图减小蜗壳或导叶流道中由于特定结构所导致的局部扰动,减小其流动损失,提高涡轮效率。对该设计方案与喷嘴座结构方案、定距套结构方案进行了相同工况的数值计算,通过计算结果的对比,从理论上验证了设计方案的可行性。A design scheme of turbocharger regulating mechanisms was proposed. In the design scheme, nozzle seat or spacer sleeve structure in traditional turbocharger was replaced by three fixed guide vanes to control the width of the nozzle ring. The design scheme was expected to realize the de- crease of the local disturbance in the volute or in the nozzle ring field caused by the special structure, the decrease of the flow loss and the improvement of the turbine stage efficiency. The numerical calcu- lations of the designed model, the nozzle seat structure model and the spacer sleeve structure model were conducted under the same operating conditions. Comparisons among the results of these three types of turbines validated the feasibility of the novel design scheme in theory.

关 键 词：可变几何截面涡轮增压器 调节机构 优化设计 涡轮效率 数值计算 

分 类 号：TK421.8[动力工程及工程热物理—动力机械及工程]