| 聚丙烯酰胺装置输料风机副叶轮密封改造 |
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| 引用本文： | 张志强,李颖.聚丙烯酰胺装置输料风机副叶轮密封改造[J].中国化工装备,2010,12(2):24-27. |
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| 作者姓名： | 张志强 李颖 |
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| 作者单位： | 大庆炼化公司机电仪厂,大庆,163411 |
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| 摘 要： | 聚丙烯酰胺装置输料风机密封由普通骨架油封改造为铜质梳齿密封后效果较好,但是梳齿密封间隙要求范围小(0.20mm),如果风机轴磨损,铜梳齿密封间隙仍然超差导致泄漏。我们及时对输料风机运行转速进行测算,对其进行进一步改造,并确立为2008年技术攻关项目。经过计算,在风机叶轮轮毂上增加背叶片(副叶轮),形成负压密封腔,阻止物料在高速状态SPAN油气外泄,减少铜质梳齿密封的工作压力,同时将梳齿密封作为辅助静止密封,保证输料风机特殊的密封要求。
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| 关 键 词： | 聚丙烯酰胺 输料风机 梳齿密封 副叶轮 背叶片 SPAN油气 间隙 转速 |
The Improvement of Polyacrylamide Unit Conveying Fans Vice-Impeller Seal |
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| Zhang Zhi-qiang,Li Ying.The Improvement of Polyacrylamide Unit Conveying Fans Vice-Impeller Seal[J].China Chemical Industry Equipment,2010,12(2):24-27. |
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| Authors: | Zhang Zhi-qiang Li Ying |
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| Affiliation: | Zhang Zhi-qiang,Li Ying (Petrochina Daqing Refining & Petrochemical Company,Daqing 163411) |
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| Abstract: | Conveying fans are in good seal state since we replaced general framework seal with copper comb seal in PAM unit. The gap of comb seal is in a narrow range (0.20mm). If the fan shafts wear,copper comb seal gap increased,it will have seal leakage. We put this problem as a technology research project in 2008. By calculating the conveying speed of the fan,we made a further reform of the fans seal,added back blade (viceimpeller) at the fan impeller blade hub,this will help to form a vacuum sealed chamber to pre... |
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| Keywords: | SPAN |
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