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首页> 外文期刊>Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology >Experimental investigation on liquid absorption of jet pump under operating limits
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Experimental investigation on liquid absorption of jet pump under operating limits

机译：工作极限下射流泵吸液的实验研究

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To realize the automatic quantitative control of liquid absorption, a jet pump working under operating limits is proposed and investigated. Experimental results show that the absorption amount keeps constant and is independent of the outlet pressure at the jet pump operating limits. There is an obvious interface wave in the jet pump, and the reason why the upstream pressures have not changed is because the interface wave has not arrived there. The critical pressure ratio is 0.28 at the flow ratio of 0.5%, while it is only 0.2 at the flow ratio of 19.5%. Hence, the low flow ratio produces a high critical pressure ratio, making the jet pump have a much stronger resistibility for dealing with the downstream pressure fluctuation. In addition, the jet pump has a larger bubble region length at a lower flow ratio under operating limits. The bubble diameter decreases from 0.42 mm to 0.06 mm with the flow ratio increasing at the throat cavity, while it keeps unchanged at the suction cavity, which creates a good condition for stable liquid absorption. Based on the above contributions, it is believed that the study will lay an important foundation for the large-scale application of jet pump used for automatic quantitative control. (C) 2015 Elsevier Ltd. All rights reserved.
机译：为了实现对液体吸收的自动定量控制，提出并研究了一种在工作极限下工作的喷射泵。实验结果表明，吸收量保持恒定，并且与喷射泵工作极限处的出口压力无关。喷射泵中有明显的界面波，上游压力没有变化的原因是界面波尚未到达此处。临界压力比在流量比为0.5％时为0.28，而在流量比为19.5％时仅为0.2。因此，低流量比产生高临界压力比，使喷射泵具有更强的抵抗下游压力波动的能力。此外，喷射泵在工作极限下以较低的流量比具有较大的气泡区域长度。随着流量的增加，气泡直径从0.42 mm减小到0.06 mm，而在吸入腔则保持不变，这为稳定的液体吸收创造了良好的条件。基于上述贡献，相信该研究将为用于自动定量控制的喷射泵的大规模应用奠定重要基础。 （C）2015 Elsevier Ltd.保留所有权利。

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