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热采井口地面管线位移补偿与影响因素分析
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作者 丁宇奇 贾威 +4 位作者 芦烨 杨明 李百帅 徐鹏超 叶碧涛 《化工机械》 CAS 2022年第3期481-488,共8页
针对热采井口抬升现象,以井口地面管系为研究对象,分别建立整体管系和补偿器的有限元模型。提出以管系变形和强度为判据的最大位移补偿方法,并以此为判据对整体管系和局部补偿器的强度和密封性能进行数值模拟分析,得到了特定管系结构的... 针对热采井口抬升现象,以井口地面管系为研究对象,分别建立整体管系和补偿器的有限元模型。提出以管系变形和强度为判据的最大位移补偿方法,并以此为判据对整体管系和局部补偿器的强度和密封性能进行数值模拟分析,得到了特定管系结构的最大位移补偿量。最后,分析了管臂长度和补偿器结构对补偿位移的影响,结果表明:直管臂长度影响井口最大位移补偿量,直管臂1、2增加500 mm会使补偿量降低23.4%,缩短500 mm会使补偿量增大117.7%;轴向旋转补偿器的最大位移补偿量比万向旋转补偿器高出7.7%。 展开更多
关键词 地面管系 热采井口 管臂长度 局部旋转补偿器 最大位移补偿量
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Tourist Behaviors in Wetland Park:A Preliminary Study in Xixi National Wetland Park,Hangzhou,China 被引量:5
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作者 PAN Lili CUI Lijuan WU Ming 《Chinese Geographical Science》 SCIE CSCD 2010年第1期66-73,共8页
Public education as well as tourism and leisure are the two important functions of national wetland park, and tourist behaviors act as the guiding factor in the national wetland park construction and management.As the... Public education as well as tourism and leisure are the two important functions of national wetland park, and tourist behaviors act as the guiding factor in the national wetland park construction and management.As the first national wetland park in China, Xixi National Wetland Park, located in Hangzhou City, Zhejiang Province, will give constructive instructions to the construction and management of other wetland parks and ecotourism resorts.This paper analyzed the tourist behaviors in Xixi National Wetland Park.By the observation, in-depth interview and questionnaire, the results show that tourists in wetland parks are different from those in the other common destinations, and they are also different from those strict eco-tourists.In fact, the tourists in wetland park have unique characteristics, such as the intense perception to the functions of wetland ecosystem and the environment impact behaviors.Those tourists are preferred to natural landscapes in their motivations and expectations.Wetland landscapes are the main image to those tourists in the Xixi National Wetland Park.Tourist expectation, experience and satisfaction are all critical factors for the success of the planning and management in national wetland parks.Based on the results, some measures for the sustainable development of wetland parks, including to optimize wetland theme landscape and tourism products, to improve tourist facilities and services, to enhance quality of visitor experiences, and to implement total quality management based on tourist characteristics, are given to national wetland park ecotourism. 展开更多
关键词 tourist behavior ECOTOURISM Xixi National Wetland Park China
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Case study of underground pipe ground coupled heat pump system 被引量:1
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作者 郑敏 李百毅 乔振勇 《Journal of Central South University》 SCIE EI CAS 2012年第3期664-668,共5页
Aiming to give some advices on the ground coupled heat pump system design in Siehuan Province, China, a typical ground source heat pump (GSHP) system in Sichuan Province was tested in a whole operational year, and t... Aiming to give some advices on the ground coupled heat pump system design in Siehuan Province, China, a typical ground source heat pump (GSHP) system in Sichuan Province was tested in a whole operational year, and the parameters of temperature and flow rate in different parts of system were measured during this period. The seasonal energy efficiency ratio was calculated and the performance of heat pump system in summer was compared with that in winter. The result shows that the coefficient of performance of the system reaches 3.63 in summer and 3.49 in winter, respectively. The heat balance in underground rock mass is acquired basically throughout the year, and the heat accumulation in the earth tends to be zero. 展开更多
关键词 ground coupled heat pump operational test parameters measurement
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