东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (3): 449-452.DOI: -

• 论著 • 上一篇    下一篇

重力驱动小型滴汞泵的研究

徐章润;唐小燕;王建华;方肇伦;   

  1. 东北大学理学院;东北大学理学院;东北大学理学院;东北大学理学院 辽宁 沈阳 110004;辽宁 沈阳 110004;辽宁 沈阳 110004;辽宁 沈阳 110004
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-03-15 发布日期:2013-06-22
  • 通讯作者: Xu, Z.-R.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金(20675012);;

Development of a gravity-driven mercury-dropping pump

Xu, Zhang-Run (1); Tang, Xiao-Yan (1); Wang, Jian-Hua (1); Fang, Zhao-Lun (1)   

  1. (1) School of Sciences, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-03-15 Published:2013-06-22
  • Contact: Xu, Z.-R.
  • About author:-
  • Supported by:
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摘要： 提出了一种以重力为驱动力的小型滴汞泵,该泵主要由2个结构相同的储汞腔、一段8cm长的毛细管(200μm i.d.)和连接管三部分组成.分析了滴汞泵的工作原理;讨论了滴汞泵的设计思路和影响泵性能的各种因素,包括汞液位差、滴汞毛细管内径和长度、负载流阻、储汞腔水平截面积等;测试了滴汞泵的流速、泵压等性能参数.该泵体积小,无能耗,无需机械活动部件,可通过倾斜泵体方便地调节流速,通过上下翻转泵体可实现滴汞泵反复长期使用.连续工作4 h,流速在1.09～1.34μL/min之间,平均流速1.22μL/min,流速精度RSD为4.0%,测得泵压为4.5kPa.

关键词: 微泵, 汞, 重力驱动, 小型化, 微流控

Abstract: A miniaturized gravity-driven mercury-dropping pump was developed. The pump consists of a piece of 8 cm long capillary (200 μm i.d.) connected at both ends to two circular mercury reservoirs in the same construction for mercury dropping. The working: Principle of the pump was discussed with the influencing factors on its performance in conceptual design analyzed, such as the level variation of mercury, the inner diameter and length of the capillary, the loading flow resistance and the sectional area of the mercury reservoirs. Some of the figures of merit of the present mercury-dropping pump include its miniaturized dimensions, self-driven, free of mechanical parts, controllable flowrates by readily adjusting the differences between mercury levels via tilting the pump body and long-term repeated operation by overturning the pump body. A flow rate 1.09-1.34 μL/min was obtained within 4 hr successive operation, with an average flowrate 1.22 μL/min and precision 4.0% RSD (n = 24) provided. The pumping pressure was tested up to 4.5 kPa.

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