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发表时间：2019-01-01

发表刊物：化工学报

所属单位：化工学院

卷号：70

期号：6

页面范围：2252-2258

ISSN号：0438-1157

摘要：With the development of natural gas wells, the wellhead pressure is gradually reduced, and the pressurized gathering and gathering of low-pressure wellheads has become a research hotspot. At present, the common natural gas injection technology has a poor adaptability to gas well pressure and flow due to its fixed structural size, which makes its operating efficiency generally low. Based on this, the cone core adjustable ejector device was designed and processed, and its performance under variable working conditions was studied experimentally. The results show that with the inward movement of the adjustable cone, the flow rate of the high pressure port is reduced, and a wide range of flow adjustment of about 70% can be achieved; Moreover, the flow rate of the low-pressure port is almost unchanged during the adjustment process, so that the ejector rate of the device is improved, and the cone-core adjustable ejector technology has strong resistance to flow fluctuation. With the deepening of adjustable cone, the optimal expansion ratio of the device increases. Thus, the adaptability of the device to the condition of large expansion ratio is improved. At the same compression ratio, the efficiency of the device′s ejection increases with the depth of the adjustable cone, but it reduces the range of compression ratios that the device effectively emits.

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