区域热水锅炉房供热输送干线最大年温差循环研究
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摘要
针对我国区域热水锅炉房供热管网疲劳寿命的研究现状,提出了一种基于模糊数学的通用隶属函数,对供热管网的疲劳寿命进行计算和研究.在采用调查问卷和实际测量方法对区域热水锅炉房的事故情况及管网热工参数进行统计的前提下,明确了区域锅炉房输送干线的事故频次和多发部位,同时综合管网热工参数计算得出最大年温差循环次数.结果表明,通用隶属函数适用于供热管网疲劳分析,进而计算得出区域热水锅炉房输送干线在设计寿命30年内的最大年温差循环次数为(77.08,90.29),平均值为82.74.该研究可以为区域热水锅炉房的供热管网疲劳分析提供参考.
Aiming at the research status of the fatigue life of the hot water boiler heating pipe network in China,ageneral membership function based on fuzzy mathematics was proposed to calculate and study the fatigue life of the heating pipe network.Based on the investigation of the accident situation and the thermal parameters of the hot water boiler in the regional hot water boiler room,the accident frequency and multiple parts of the regional boiler room transportation trunk are determined by the questionnaire and the experimental measurement method.At the same time,the annual maximum temperature difference cycle is calculated combining with the thermal parameters of pipe network.The results show that the general membership function is applied to the fatigue analysis of the heating pipe network,and then the maximum annual temperature difference cycle of the regional hot water boiler room in the design life of 30 years is estimated(77.08,90.29)and the average is 82.74.The study can provide reference for the analysis of the heating pipe network fatigue of the regional hot water boiler room.
Aiming at the research status of the fatigue life of the hot water boiler heating pipe network in China,ageneral membership function based on fuzzy mathematics was proposed to calculate and study the fatigue life of the heating pipe network.Based on the investigation of the accident situation and the thermal parameters of the hot water boiler in the regional hot water boiler room,the accident frequency and multiple parts of the regional boiler room transportation trunk are determined by the questionnaire and the experimental measurement method.At the same time,the annual maximum temperature difference cycle is calculated combining with the thermal parameters of pipe network.The results show that the general membership function is applied to the fatigue analysis of the heating pipe network,and then the maximum annual temperature difference cycle of the regional hot water boiler room in the design life of 30 years is estimated(77.08,90.29)and the average is 82.74.The study can provide reference for the analysis of the heating pipe network fatigue of the regional hot water boiler room.
引文
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[2]李云龙,庄传晶,冯耀荣,等.油气输送管道疲劳寿命分析及预测[J].油气储运,2004,23(12):41-43.Li Yunlong,Zhuang Chuanjing,Feng Yaorong,et al.Analysis and predication on fatigue life of oil and gas pipelines[J].Gas Storage and Transportation,2004,23(12):41-43.(in Chinese)
[3]Pinheiro B D C,Pasqualino I P.Fatigue analysis of damaged steel pipelines under cyclic internal pressure[J].International Journal of Fatigue,2009,31(5):962-973.
[4]焦中良,李志文,李志勇,等.油气管道波动压力的雨流计数与分析[J].油气储运,2011,30(8):624-628.Jiao Zhongliang,Li Zhiwen,Li Zhiyong,et al.Rainflow counting analysis of the fluctuation pressure for oil&gas pipelines[J].Oil&Gas Storage and Transportation,2011,30(8):624-628.(in Chinese)
[5]中华人民共和国住房和城乡建设部.CJJ/T 81-2013,城镇供热直埋热水管道技术规程[S].北京:中国建筑工业出版社,2013.
[6]European Committee for Standardization. BS EN13941,design and installation of preinsulated bonded pipe system for district heating[S].London:StandardsPolicyandStrategy Committee,2009.
[7]张华杉,王晓霞,邹平华,等.基于热网调研的供热管网元件故障率统计与频谱分析[J].暖通空调,2004,34(1):15-18.Zhang Huashan,Wang Xiaoxia,Zou Pinghua,et al.Failure rate statistics and spectrum analysis of heating network components based on an investigation[J].HV&AC,2004,34(1):15-18.(in Chinese)
[8]邹平华,雷翠红,王威.热网故障与提高热网可靠性的措施[J].暖通空调,2008,38(11):7-12.Zou Pinghua,Lei Cuihong,Wang Wei.Heat-supply network failure and measures for reliability improving[J].HV&AC,2008,38(11):7-12.(in Chinese)
[9]王晓霞,赵立华,邹平华.多热源环状热网故障工况拓扑重构方法研究[J].暖通空调,2014(9):85-90.Wang Xiaoxia,Zhao Lihua,Zou Pinghua.Reconstruction method of topology structure of multi-heat source ring-shaped heat-supply network under fault conditions[J].HV&AC,2014(9):85-90.(in Chinese)
[10]Chang Y S,Jung S W,Lee S M,et al.Fatigue data acquisition,evaluation and optimization of district heating pipes[J].Applied Thermal Engineering,2007,27(14-15):2524-2535.
[11]董媛媛,王飞,王国伟.供热直埋输送干线循环次数统计方法的研究[J].太原理工大学学报,2015,46(4):461-464.Dong Yuanyuan,Wang Fei,Wang Guowei.Research on statistical methods of cycle index of heating directly-buried transportation trunk[J].Journal of Taiyuan University of Technology,2015,46(4):461-464.(in Chinese)
[12]李奎,王飞,王国伟,等.直埋压制三通疲劳极限合理性对比分析[J].太原理工大学学报,2017,48(2):174-178.Li Kui,Wang Fei,Wang Guowei,et al.Contrastive analysis on rationality of fatigue limit in directly buried extruded tees of specification.[J].Journal of Taiyuan University of Technology,2017,48(2):174-178.(in Chinese)
[13]王飞,张建伟,王国伟,等.直埋供热管道工程设计[M].第2版.中国建筑工业出版社,2014.
[14][丹麦]兰德劳皮夫.区域供热手册[M].贺平,王钢,译.哈尔滨:哈尔滨工程大学出版社,1998.
[15]吕青.模糊概率理论的研究及其在电能质量评估改进与优化中的应用[D].哈尔滨:哈尔滨理工大学,2017.