石油化工设计 ›› 2020, Vol. 37 ›› Issue (2): 1-5.doi: 10.3969 /j.issn.1005-8168.2020.02.001

• 设备技术 •    下一篇

LNG低温储罐管口传热优化设计

李明   

  1. 中国石化工程建设有限公司,北京 100101
  • 收稿日期:2020-03-17 接受日期:2020-03-17 出版日期:2020-05-25 发布日期:2020-05-25
  • 通讯作者: 李明,liming3@sei.com.cn E-mail:liming3@sei.com.cn
  • 作者简介:李明,男,2010年毕业于中国石油大学(北京),工学博士,现任工厂系统室副主任,高级工程师,主要从事油气储运相关方面的工程设计及研究工作。联系电话:010-84875275;E-mail: liming3@sei.com.cn;项目编号:2017YFC0805800,国家石油及天然气储备库安全保障技术与装备研发

Optimum Heat Transfer Design of Nozzles on Roof of LNG Cryogenic Tank

Li Ming   

  1. SINOPEC Engineering Incorporation, Beijing, 100101
  • Received:2020-03-17 Accepted:2020-03-17 Online:2020-05-25 Published:2020-05-25
  • Contact: Li Ming,liming3@sei.com.cn E-mail:liming3@sei.com.cn

摘要: 基于传热学基本理论,研究了LNG低温储罐顶部管口结构的传热问题,分析了其传热过程,应用ANSYS软件对其进行了温度场模拟,并对管口结构尺寸参数进行了敏感性分析和优化设计。结果表明:影响热套管与罐顶板结合处温度的最主要参数是热套管长度;影响热套管外侧表面温度的最主要参数是热套管长度、热套管外侧保冷厚度、热套管保冷段长度。分析方法和分析结果对类似低温储罐管口的结构设计提供了理论依据

关键词: 低温储罐, 传热, 敏感性分析, 优化设计

Abstract: The heat transfer of nozzles on the roof of LNG cryogenic tank is studied according to the basic theories of heat transfer, including the analysis of the heat transfer process, the simulation of nozzle temperature field using ANSYS and the sensitivity analysis and optimization of nozzle size and structure parameters. As it turns out, the primary factor affecting the temperature at the joint between thermal sleeve and tank roof plate is the length of the thermal sleeve; which, together with the external insulation thickness and the insulation length of the thermal sleeve, are the major factors affecting the external surface temperature of the thermal sleeve. The analyzing methods and results can serve as a theoretical basis for the structure design of similar nozzles on the roof of LNG cryogenic tank.

Key words: cryogenic tank, heat transfer, sensitivity analysis, optimum design