水力自驱旋转式能量回收装置的转速推导

摘要

为建立海水淡化水力自驱旋转式能量回收装置（HRERD，Hydro-Drive Rotary Energy Recovery Device）转子转速与系统流量间的关联关系，对特定几何规格的能量回收装置的转速变化规律进行了理论推导和实验验证。运用动量定理建立了转子受流体水力冲击而产生的动力矩与转子转速的关系式；以微元法为基础，运用牛顿黏性定律建立了转子周面和端面因流体黏性阻力而产生的阻力矩与转子转速的关系式；利用转子稳定时所受动力矩与阻力矩间的平衡关系，推导得到装置转速与系统流量间的理论公式。对装置在系统流量分别为4.4、5.0、6.0和7.1 m³·h^-1时的理论转速与实验转速比较分析表明，理论转速略高于实验转速，两者相对误差不超过12%，对误差形成的可能原因也进行了分析说明。

	Service

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	Email Alert
	RSS
	作者相关文章
	孙扬平
	王越
	许恩乐
	武立明
	徐世昌

关键词：海水淡化能量回收装置水力自驱转速推导

Abstract：

To establish the relationship between rotating speed of the rotor of hydro-drive rotary energy recovery device(HRERD) used in seawater desalination process and system flow, this article theoretically and experimentally derived the changing rules of rotating speed of a HRERD with specific geometric dimensions. The momentum theorem was utilized to establish the relationship between kinetic moment of the rotor caused by fluid's hydraulic impact and rotating speed. Newton's law of viscosity was utilized to establish the relationship between resisting moment of peripheral and end faces of the rotor caused by fluid's viscous drag and rotating speed based on infinitesimal method. Then the equilibrium relation between the kinetic and resisting moment of the rotor at its stable phase was utilized to derive a theoretical formula between rotating speed and system flow. Theoretical and experimental rotating speeds at 4.4 m³·h^-1, 5.0 m³·h^-1, 6.0 m³·h^-1, 7.1 m³·h^-1 were then compared and analyzed. Results show that the theoretical rotating speeds are slightly larger than the experimental rotating speeds, and the relative errors between them are no more than 12%. This article also analyzed and explained the reasons for the relative errors.

Keywords： seawater desalination； energy recovery device； hydro-drive； rotating speed derivation

Received 2014-04-30;

Fund:

天津市科技兴海计划项目（KJXH2012-03）。

Corresponding Authors: 王越,E-mail:tdwy75@tju.edu.cn。 Email: tdwy75@tju.edu.cn

About author: 孙扬平(1987-),男,硕士研究生,从事海水淡化能量回收装置开发研究。

引用本文:

孙扬平, 王越, 许恩乐, 武立明, 徐世昌.水力自驱旋转式能量回收装置的转速推导[J]. 化学工业与工程, 2016,33(4): 67-73

Sun Yangping, Wang Yue, Xu Enle, Wu Liming, Xu Shichang.Rotating Speed Derivation of Hydro-Drive Rotary Energy Recovery Device[J]. Chemcial Industry and Engineering, 2016,33(4): 67-73

[1] Peñate B, García-Rodríguez L. Current trends and future prospects in the design of seawater reverse osmosis desalination technology[J]. Desalination, 2012, 284: 1-8
[2] Peñate B, de la Fuente J A, Barreto M. Operation of the RO kinetic energy recovery system: Description and real experiences[J]. Desalination, 2010, 252(1/3): 179-185
[3] 刘宁, 李艳霞, 刘中良,等. 反渗透海水淡化系统中压力能回收装置[C]//中国高等教育学会工程热物理专业委员会.高等学校工程热物理第十九届全国学术会议论文集. 郑州,2013
[4] 王颖, 张妍, 伍联营, 等. 旋转式压力能交换器的数值模拟[J]. 计算机与应用化学, 2014, 31(1): 29-32 Wang Ying, Zhang Yan, Wu Lianying, et al. Numerical simulation of rotary pressure exchanger[J]. Computers and Applied Chemistry, 2014, 31(1): 29-32(in Chinese)
[5] 王越, 余瑞霞, 徐世昌, 等. 正位移式阀控能量回收装置盐水连续进料过程特性研究[J]. 水处理技术, 2006, 32(1): 23-25 Wang Yue, Yu Ruixia, Xu Shichang, et al. Studies on brine continuous feeding of positive displacement type valve-controlled energy recovery unit[J]. Water Treatment, 2006, 32(1): 23-25(in Chinese)
[6] Bross S, Kochanowski W, Schuler C. Rotary pressure exchanger: US, 20070104588[P]. 2007-01-01
[7] Martin J, Stover R L. Rotary pressure transfer device: US, 8075281B2[P]. 2011-12-13
[8] Pique G G, Stover R L, Martin J G, et al. Rotary pressure transfer device with improved flow: US, 7997853B2[P]. 2011-08-16
[9] Hauge, Leif. Pressure exchanger: US, 7306437B2[P]. 2007-12-11
[10] Hauge L J. New XPR technology expands ERD market potential[J]. The International Desalination & Amp; Water Reuse Quarterly, 2011, 21(2): 32-35
[11] Stover R L. Development of a fourth generation energy recovery device[C]//American Society of Mechanical Engineers. ASME 2004 International Mechanical Engineering Congress and Exposition, 2004:195-200
[12] 张金鑫, 王越, 杨勇君, 等. 反渗透海水淡化转子式压力交换器运行特性研究[J]. 化学工业与工程, 2012, 29(5): 48-52 Zhang Jinxin, Wang Yue, Yang Yongjun, et al. Operating characteristics of rotary pressure exchanger for SWRO desalination system[J]. Chemical Industry and Engineering, 2012, 29(5): 48-52(in Chinese)
[13] 杨勇君, 王越, 张金鑫, 等. 旋转式能量回收装置混合过程优化研究[J]. 化学工业与工程, 2012, 29(6): 42-49 Yang Yongjun, Wang Yue, Zhang Jinxin, et al. Simulation and optimization on the mixing performance of rotary energy recovery device[J]. Chemical Industry and Engineering, 2012, 29(6): 42-49(in Chinese)
[14] 卢彦越. 反渗透海水淡化系统优化设计的研究[D]. 山东青岛: 中国海洋大学, 2004 Lu Yanyue. Study on the optimization design of reverse osmosis seawater desalination system[D]. Shandong Qingdao: Ocean University of China, 2004
[15] 韩松, 王越, 许恩乐, 等. 水力驱动转子式能量回收装置启动特性研究[J]. 化学工业与工程. 2014, 31(2): 24-30 Han Song, Wang Yue, Xu Enle, et al. Startup characteristics of hydraulic-drive rotary energy recovery device[J]. Chemical Industry and Engineering, 2014, 31(2): 24-30(in Chinese)
[16] 童刚, 陈丽君, 冷健. 旋转式黏度计综述[J]. 自动化博览, 2008, 24(1): 68-70 Tong Gang, Chen Lijun, Leng Jian. A review on rotary viscometer[J]. Automation Panorama, 2008, 24(1): 68-70(in Chinese)