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纸机密闭气罩内外压差的量化模型(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年02期
Page:
95-100
Column:
研究论文
publishdate:
2010-03-30

Article Info:/Info

Title:
Pressuredifference quantificational model between inside and outside of the closed steam hood in paper machine
Author(s):
YAO Xinyue ZHANG Hui*
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China
Keywords:
paper machine dryer section steam hood pressuredifference curve zeroposition control quantificational model
Classification number :
TS737; TU83
DOI:
10.3969/j.jssn.1000-2006.2010.02.022
Document Code:
A
Abstract:
In order to optimize airflow parameters and zeroposition control system of the closed steam hood in paper machine’s dryer section, the air condition both inside and outside of the hood was firstly analyzed. The pressuredifference changing curve between inside and outside of the hood was established under mechanical ventilation. On the other hand, the influence of air temperature or volumedifference between supplied and drawn air on zeroposition was also quantitatively analyzed. Finally, the quantificational zeroposition control model was established. The results indicated that the air temperature inside upper hood, the variation of which is about 55 % of the variation of supplied air temperature, is directly propotional to the level of zeroposition. The variation of supplied air moisture can cause the volumedifference between supplied and drawn air changing by about 12.5 % which has an inverse propotion to the level of zeroposition. According to the principle of adjusting the volumedifference between supplied and drawn air, the deviation of zeroposition can be quickly regulated by setting feedforward control system.

References

[1]黄海平,李西华,赵德华,等. SymRun干燥部空气系统设计及运行[J]. 中华纸业,2002,23(12):20-22.
[2]杨博,王孟效,汤唯,等. 专家控制在纸机干燥部通风系统控制中的应用[J]. 制造业自动化,2008,30(7):61-64.
[3]周乐才. 纸机封闭式气罩及其设计要点[J]. 中华纸业,2006,27(10):54-57.
[4]Klepaczka Aleksander. Highintensity convective air hoods in a conventional multicylinder drying section of a papermaking machine[J]. Przeglad Papierniczy, 2004, 60(6): 299-303.
[5]Martz Wesley, Maltais Daniel. Dryer section expert system for dynamic optimization of the paper machine[C]//TAPPI: Proceedings of the TAPPI International Engineering Conference, 1998.
[6]Onel Selis, Gürüz Güniz. Energy optimization of the YankeeHood dryer[J]. Strojniski Vestnik/Journal of Mechanical Engineering, 2001, 47( 8): 512-518.
[7]Ghosh Ajit K, Oxley Frank. Pocket ventilation—an often forgotten area of paper drying[J]. Appita Journal, 2007, 60(4): 301-308.
[8]Bock Thomas. How can the efficiency of the dryer section be increased[J]. International Paperworld, 2006, 6: 62-67.
[9]Mainardi Davide, Gianlorenzi Giancarlo. Energy consumption reduction in tissue drying methodology[J]. Appita Journal, 2008, 61(6): 432-438.
[10]赵书海. 对干湿空气密度计算方法的认识[J]. 河北煤炭,1999(3):57-58.
[11]姚玉英. 化工原理[M]. 天津:天津大学出版社,1999.
[12]王汉青. 通风工程[M]. 北京:机械工业出版社,2005.
[13]Yuan Xiaoxiong, Glickman L R. A critical review of displacement ventilation[J]. ASHRAE Trans, 1998, 104(1A): 78-90.
[14]Nilsson L. Heat and mass transfer in multicylinder drying[J]. Chemical Engineering and Processing, 2004, 43: 1555-1560.
[15]董海荣. 室内空气品质与置换通风[J]. 河北建筑工程学院学报,2003,21(4):61-63.
[16]官振祥,刘振义,李生谦,等. 纸机干燥部热平衡及其计算机辅助计算[J]. 中国造纸,1993(3):31-35.
[17]厉玉鸣. 化工仪表及自动化[M]. 3版. 北京:化学工业出版社,1999.

Last Update: 2010-05-14