一种井筒内低品位余热回收的串级式翅片重力热管装置的设计
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摘要
为提取废弃油井中的低品位余热,提出一种新型井筒内低品位余热回收的串级式翅片重力热管装置的设计方案,分析了重力热管装置的结构组成及工作原理。该装置包括同轴设置并串接在一起的多组串级套筒和多组热管节,串级套筒和热管节相间分布或两个热管节之间设有多个串级套筒,通过一级一级向上的热量传递,最终将地层深处的热能提取到地面上来。装置采用串级式的结构,消除了传统热管长径比对其携带极限的影响;采用翅片热管连接重力热管,翅片热管的环形翅片增大其在热管节套筒中和工质的接触面积,有效地提高热管的换热效率,具有较好的推广应用前景。
A new kind of cascade type fin gravitational heat pipe device with low grade waste heat recovery in wellbore was designed to extract low grade residual heat from abandoned oil wells. The device is made of a plurality of cascade sleeves and a plurality of member heat pipe joints arranged on the same axis and strung together. The cascade sleeves and heat pipe joints are distributed alternately or there are several cascade sleeves between two heat pipe joints. The cascade sleeves are used to extract the heat in deep stratum to the ground surface by transferring the heat upward stage by stage. The device adopts a cascade structure,which eliminates the influence of the length/diameter ratio of traditional heat pipe on its carrying limit. By using the finned heat pipes to connect the gravitational heat pipe,the annular fin of the finned heat pipe increases its contact area with the working substance in the heat pipe sleeves so as to effectively improve the heat transfer efficiency of the heat pipes. Therefore,it has a better prospect of extensive application.
A new kind of cascade type fin gravitational heat pipe device with low grade waste heat recovery in wellbore was designed to extract low grade residual heat from abandoned oil wells. The device is made of a plurality of cascade sleeves and a plurality of member heat pipe joints arranged on the same axis and strung together. The cascade sleeves and heat pipe joints are distributed alternately or there are several cascade sleeves between two heat pipe joints. The cascade sleeves are used to extract the heat in deep stratum to the ground surface by transferring the heat upward stage by stage. The device adopts a cascade structure,which eliminates the influence of the length/diameter ratio of traditional heat pipe on its carrying limit. By using the finned heat pipes to connect the gravitational heat pipe,the annular fin of the finned heat pipe increases its contact area with the working substance in the heat pipe sleeves so as to effectively improve the heat transfer efficiency of the heat pipes. Therefore,it has a better prospect of extensive application.
引文
[1]李同同.利用废弃油井地热能发电的研究[D].合肥:中国科学技术大学,2014.
[2]刘姗姗,张志刚,齐航.并联分离式热管内传热特性的试验研究[J].流体机械,2017,45(6):56-60.
[3]徐笑锋,章学来,张宇迪,等.基于双温储能热管的余热回收装置系统设计与试验研究[J].流体机械,2018,46(9):59-63.
[4]刘敏.重力热管传热极限影响因素的研究[D].广州:华南理工大学,2016.
[5]张龙.某超长重力热管提取地热的热工分析及改进措施[D].西安:西安工程大学,2016.
[6]王晓东.多级分离式重力热管设计[J].科技资讯,2017,19(7):51-52.
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[8]张玉丰,吴晓东,李伟超.重力热管井筒伴热方式可行性分析[J].石油勘探与开发,2007,34(4):483-487.
[9]张向南,张彦军,卢芳.空冷器板翅式传热元件翅片高度的优化计算[J].压力容器,2014,31(7):22-27.
[10]卢芳,苗刚,张向南,等.翅化比对扁管翅片管性能的影响[J].压力容器,2015,32(6):61-64.
[11]陈绍杰,杨峻.两种不同结构的回路型重力热管性能比较[J].化工机械,2017,44(2):131-134.
[12]马春红,吴晓东,石崇兵.热管改善油井井筒流体温度分布的理论研究[J].石油学报,2006,27(1):114-118.
[13]Riffat S B,Zhao X,Doherty P S.Investigation into the performance of a micro gravitational heat pipe and a micro gravitational heat pipe with artery[J].International Journal of Energy Research,2003,27(1):45-61.
[14]Zhang L Y,Liu Y Y,Guo X,et al.Experimental investigation and economic analysis of gravity heat pipe exchanger applied in communication base station[J].Applied Energy,2017,194(5):499-507.
[15]张劲草,辛公明,陈岩,等.蒸发段和冷凝段变化对重力热管性能的影响[J].化工学报,2017,68(4):1343-1348.
[16]周宁,李贞子,贾仲宣.地温梯度的统计回归分析[J].钻采工艺,1997,20(5):5-9.
[2]刘姗姗,张志刚,齐航.并联分离式热管内传热特性的试验研究[J].流体机械,2017,45(6):56-60.
[3]徐笑锋,章学来,张宇迪,等.基于双温储能热管的余热回收装置系统设计与试验研究[J].流体机械,2018,46(9):59-63.
[4]刘敏.重力热管传热极限影响因素的研究[D].广州:华南理工大学,2016.
[5]张龙.某超长重力热管提取地热的热工分析及改进措施[D].西安:西安工程大学,2016.
[6]王晓东.多级分离式重力热管设计[J].科技资讯,2017,19(7):51-52.
[7]中国石油天然气股份有限公司.采油井井筒组合式重力热管:201210511161.8[P].2015-07-08.
[8]张玉丰,吴晓东,李伟超.重力热管井筒伴热方式可行性分析[J].石油勘探与开发,2007,34(4):483-487.
[9]张向南,张彦军,卢芳.空冷器板翅式传热元件翅片高度的优化计算[J].压力容器,2014,31(7):22-27.
[10]卢芳,苗刚,张向南,等.翅化比对扁管翅片管性能的影响[J].压力容器,2015,32(6):61-64.
[11]陈绍杰,杨峻.两种不同结构的回路型重力热管性能比较[J].化工机械,2017,44(2):131-134.
[12]马春红,吴晓东,石崇兵.热管改善油井井筒流体温度分布的理论研究[J].石油学报,2006,27(1):114-118.
[13]Riffat S B,Zhao X,Doherty P S.Investigation into the performance of a micro gravitational heat pipe and a micro gravitational heat pipe with artery[J].International Journal of Energy Research,2003,27(1):45-61.
[14]Zhang L Y,Liu Y Y,Guo X,et al.Experimental investigation and economic analysis of gravity heat pipe exchanger applied in communication base station[J].Applied Energy,2017,194(5):499-507.
[15]张劲草,辛公明,陈岩,等.蒸发段和冷凝段变化对重力热管性能的影响[J].化工学报,2017,68(4):1343-1348.
[16]周宁,李贞子,贾仲宣.地温梯度的统计回归分析[J].钻采工艺,1997,20(5):5-9.