LIU Peiqi, HE Xinchen, CHEN Jia, GUO Jiangtao, XI Jianyu, HU Dapeng. Variable working condition adaptability of cone core adjustable ejector[J]. CIESC Journal, 2019, 70(6): 2252-2258
LIU Peiqi, HE Xinchen, CHEN Jia, GUO Jiangtao, XI Jianyu, HU Dapeng. Variable working condition adaptability of cone core adjustable ejector[J]. CIESC Journal, 2019, 70(6): 2252-2258DOI: 10.11949/j.issn.0438-1157.20181522.
Variable working condition adaptability of cone core adjustable ejector
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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