کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7175236 | 1466374 | 2018 | 28 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optimization on shaft seals for a twin-screw steam compressor based on a novel uniform property region (UPR) model on discharge end-face
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Different from other types of compressor, pressure distribution on twin-screw compressor discharge end-face is related to both operating pressure and the lobe number, instead of being regarded as discharge pressure. In this paper, a mathematical model is developed based on a novel uniform property region (UPR) model to predict leakage through shaft seals, which was validated with experimental data. Simulation results show the leakage flow rate of shaft seals decreases dramatically and then reduces slightly with carbon rings number increases. The flow diameter of balance pipe determines the balance between internal and external leakage. Based on the analysis, several suggestions were given on optimizing shaft seals. For the discussed steam compressor, the number of carbon rings can be reduced from 4 to 1 and the flow diameter of balance pipe should be adjusted from 10Â mm to 5Â mm with a regulating throttling valve.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refrigeration - Volume 91, July 2018, Pages 167-176
Journal: International Journal of Refrigeration - Volume 91, July 2018, Pages 167-176
نویسندگان
Yafen Tian, Jialun Lu, Jiubing Shen, Huagen Wu, Ziwen Xing,