管内插新型自旋转子的流阻及抑垢特性  

Flow Resistance and Anti-Fouling Features of Inserted Auto-Rotating Rotors

作　　者：邢程[1] 孟继安[1] 李志信[1] 

机构地区：[1]热科学与动力工程教育部重点实验室,清华大学航天航空学院,北京100084

出　　处：《工程热物理学报》2011年第4期655-658,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划(No.2007CB206901);国家科技支撑计划项目(No.2011BAA04B02)

摘　　要：提出了一种新型自旋转子,并通过数值及实验方法研究了其流动阻力及抑垢特性。实验结果表明,在流速为0.76m/s时转子转速仍可达100r/min,内插该转子的流动阻力比光管增加2倍左右,正反旋向转子组(每组4个转子)相间布置可防止沿流向转子转速递减,使转子转速基本恒定。数值分析表明,通过减小转子的旋转轴套外径并加前端导流锥台的方法,可进一步降低转子的流动阻力,与光管相比仅增加1 4倍左右。初步抑垢实验说明自旋转子具有良好的抑垢性能。A new designed auto-rotating rotor was developed,while the flow resistance and antifouling characteristics of the rotors were experimentally and numerically investigated.The results indicate that the rotating speed of the rotors reached to 100 r/min when fluid velocity is 0.76 m/s and the flow resistance of circular tube inserted the rotors is 2 times increased compared with that in plain tube.Alternate arrangement of the normal and reverse helical direction rotor groups（one group has four rotors） can overcome the problem of continuous decrement of rotating speed along flow direction and therefore stabilize the rotating speeds.The numerical analysis indicates that the flow resistance can be further reduced to 1.4 times increase compared with that in plain tube with additional diversion frustum and smaller radius of the rotational sleeve.Anti-fouling experiments demonstrate the rotors have good anti-scaling performance.

关 键 词：自旋转子 旋转特性 流动阻力 抑垢特性 

分 类 号：TK123[动力工程及工程热物理—工程热物理]