[1]贾海锋,杨宝生,蔡汉成,等.U型伴热管输水管道对高寒地区冻土温度影响模拟[J].中国给水排水,2023,39(11):49-55.
　JIAHai-feng,YANGBao-sheng,CAIHan-cheng,et al.Numerical Simulation Analysis of the Effect of U?shaped Heat Tracing Water Pipeline on Permafrost Temperature in Alpine Region[J].China Water & Wastewater,2023,39(11):49-55.
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U型伴热管输水管道对高寒地区冻土温度影响模拟

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第11期 页码: 49-55 栏目: 出版日期: 2023-06-01
Title:
Numerical Simulation Analysis of the Effect of U?shaped Heat Tracing Water Pipeline on Permafrost Temperature in Alpine Region
作者:
贾海锋1， 杨宝生2， 蔡汉成1， 杨晓明1， 赵俊光3， 付菊平4
（1.中铁西北科学研究院有限公司，甘肃 兰州 730000；2.中国中铁新疆区域工程建设指挥部，新疆 乌鲁木齐 830000；3.兰州交通大学 环境与市政工程学院，甘肃 兰州 730070；4.中铁四局集团有限公司，安徽 合肥 230000）
Author(s):
JIA　Hai-feng1， YANG　Bao-sheng2， CAI　Han-cheng1， YANG　Xiao-ming1， ZHAO　Jun-guang3， FU　Ju-ping4
（1. China Railway Northwest Research Institute Co. Ltd.， Lanzhou 730000， China； 2. China Railway Xinjiang Regional Engineering Construction Headquarters， Urumqi 830000， China； 3. School of Environmental and Municipal Engineering， Lanzhou Jiaotong University， Lanzhou 730070， China； 4. China Railway Fourth Bureau Group Co. Ltd.， Hefei 230000， China）
关键词:
高寒地区;  输水管道;  U型伴热管;  温度
Keywords:
alpine region;  water pipeline;  U-shaped heat tracing pipe;  temperature
摘要:
为了保证高寒地区分散居民埋地供水管道不冻结，防止周围冻土因管道散热而融化，造成埋地管道下沉损坏，使用U型管作为伴热管，考察其防冻保温效果。通过数值分析方法研究了U型伴热管对输水管和冻土层温度的影响。结果表明，U型伴热管伴热保温效果良好，在所研究的参数范围内，U型伴热管的进出口温差最大约为8 ℃，最小约为1 ℃。以管道长度为50 m和120 m的数值模拟数据为基础，通过U型伴热管去程和回程温差，预测U型伴热管出口处温度降到冰点以下时对应的输水管道长度分别为587 m和638 m。最后拟合得到了冻土层的最高温度关联式，通过此关联式可以获得不同的U型伴热管进口温度和进口流速的极限值，从而保证冻土层不被融化。
Abstract:
In order to ensure that the buried water supply pipeline for scattered residents in alpine region does not freeze and to prevent the surrounding permafrost from melting due to heat dissipation of the pipeline and causing sinking damage to the buried pipeline, U-type pipes were used as heat tracing pipes to investigate their anti-freezing and heat preservation effects. Through the method of numerical analysis, the influence of U-type heat tracing pipe on the temperature of water pipeline and permafrost layer was studied. The results showed that the U-type heat tracing pipe had good effect of heat tracing and heat preservation; the maximum temperature difference between the import and export of the U-type heat tracing pipe was about 8 ℃ and the minimum was about 1 ℃ in the range of the studied parameters. Based on numerical simulation data of pipe lengths of 50 m and 120 m, the corresponding supply pipe lengths were predicted to be 587 m and 638 m when the temperature at the outlet of U-shaped heat tracing pipe dropped below freezing point, through the temperature difference between the inlet and outlet of U-shaped heat tracing pipe. The maximum temperature correlation of the permafrost layer was obtained, and the limit values of the inlet temperature and the inlet flow rate of the U-type heat tracing pipe could be obtained by this correlation. Thus, it could ensure that the permafrost layer would not be melted.
更新日期/Last Update: 2023-06-01