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浙江大学学报(工学版)
浙江大学学报(工学版)  2020, Vol. 54 Issue (8): 1587-1592    DOI: 10.3785/j.issn.1008-973X.2020.08.018
土木工程、交通工程     
大容量超重力离心机温控缩比模型试验
林伟岸(),郑传祥*(),蒋建群,凌道盛,陈云敏
浙江大学 超重力研究中心，软弱土与环境土工教育部重点实验室，浙江 杭州 310058
Temperature control test of scaled model of high capacity hypergravity centrifuge
Wei-an LIN(),Chuan-xiang ZHENG*(),Jian-qun JIANG,Dao-sheng LING,Yun-min CHEN
Research Center of Hypergravity, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China
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摘要：

为了解决超重力离心机在加速度大于1000g时由于风阻功率引起的主机室温升超高的问题，通过对超重力离心机产热机理及散热机理的研究，提出对应的温度控制策略. 对超重力加速度为1500g的大容量土工离心机进行1∶20缩比，基于以相同空气流速流过侧壁引起的摩擦产热相同的原理进行模拟试验，即在高速转子最外端线速度同为290 m/s下进行风阻功率测试及温度调控试验研究. 总结缩比离心试验机机室内的真空度、侧壁冷却器温度、侧壁冷却器内冷却液体积流量等对主机室温度的影响规律，得到最佳温控调节方案，提出超重力离心模拟与试验装置（CHIEF）离心机室温控方案. 缩比模拟试验结果可为原型机的设计提供设计参考.
关键词： 超重力离心机;  风阻功率;  产热;  散热;  真空;  液冷    
Abstract:

The temperature rise in the main engine room caused by the wind resistance power is high when the acceleration of the high gravity centrifuge reaches more than 1000g. The corresponding temperature control strategy was proposed through the study of the heat generation mechanism and heat dissipation mechanism of the high gravity centrifuge. In order to solve the above problem, a 1∶20 scaled test was carried out on a large capacity geocentrifuge with an acceleration of 1500g. The principle of the same friction heat generation caused by the same air velocity flowing through the side wall was used for the simulation test, that is, the linear velocity at the outermost end of the high-speed rotor was the same as 290 m/s, and the wind resistance power test and the temperature control methods study were conducted in this speed. The influence of the vacuum degree, the temperature of the side wall cooler and the volume flow of the coolant in the side wall cooler on the temperature of the main engine room was summarized. Thus, a temperature control scheme of centrifugal hypergravity and interdisciplinary experiment facility (CHIEF) was proposed. The test results from the scale model can provide a design reference for the design of the prototype.
Key words: high gravity centrifuge    wind resistance power    heat generation    heat dissipation    vacuum    liquid cooling
收稿日期: 2020-01-14 出版日期: 2020-08-28
CLC:  TH 3  
基金资助: 基本科研业务费资助项目（2017XZZX003）；浙江省科技专项超重力离心模拟与实验装置资助项目；超重力离心机模拟试验装置预研资助项目（113000-194531802）
通讯作者: 郑传祥     E-mail: inweian@zju.edu.cn;zhchx@zju.edu.cn
作者简介: 林伟岸（1981—），男，高级工程师，从事环境岩土工程和超重力实验研究. orcid.org/0000-0002-3864-451X. E-mail： inweian@zju.edu.cn
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林伟岸
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陈云敏

引用本文:

林伟岸,郑传祥,蒋建群,凌道盛,陈云敏. 大容量超重力离心机温控缩比模型试验[J]. 浙江大学学报(工学版), 2020, 54(8): 1587-1592.

Wei-an LIN,Chuan-xiang ZHENG,Jian-qun JIANG,Dao-sheng LING,Yun-min CHEN. Temperature control test of scaled model of high capacity hypergravity centrifuge. Journal of ZheJiang University (Engineering Science), 2020, 54(8): 1587-1592.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2020.08.018    或    http://www.zjujournals.com/eng/CN/Y2020/V54/I8/1587

图 1  风阻功率测试原理图
图 2  缩比模型试验装置主视图
图 3  高速转子缩比图
图 4  绝热主机室安装图
图 5  带恒温控制的冷冻机
p/kPa Δt1 Q1/kW Q2/kW Q/kW Pin/kW
1 4.37 3.61 0.264 3.874 4.280
3 4.13 3.41 0.355 3.765 4.708
5 4.75 3.92 0.471 4.391 5.375
10 5.80 4.79 0.611 5.401 6.450
30 9.70 8.01 1.090 9.100 11.118
50 12.10 9.99 1.994 11.984 15.840
表 1  缩比模拟试验参数记录表
图 6  试验测得的风阻功率和输入功率对比
图 7  有、无侧壁冷却的温度对比试验结果（10 kPa）
图 8  不同压力下主机室内温度
图 9  温度与绝对压力之间的关系曲线
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