Page 96 - 《精细化工》2022年第1期

第 39 卷第 1 期 精 细 化 工 Vol.39, No.1
202 2 年 1 月 FINE CHEMICALS Jan. 2022

功能材料
换流阀冷却用相变乳状液的制备及其性能

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周建辉 ，王 航 ，刘 杉 ，魏晓光 ，贺之渊 ，谯 耕
（1. 全球能源互联网研究院有限公司，北京 102211；2. 全球能源互联网研究院有限公司欧洲研究院，德
国 柏林 10623）
摘要：为提高换流阀冷却能力，以相变材料（高级脂肪酸酯 CrodaTherm TM 47 和 CrodaTherm TM 53）、乳化剂
（硬脂醇聚醚 Brij TM S2 和油醇聚氧乙烯醚 Sympatens AS-100）和成核剂（聚乙烯醇）以及去离子水为原料，
制备了换流阀冷却用相变乳状液。探究了相变乳状液的配方和制备工艺等对相变乳状液性能的影响，确定了最
佳配方（相变材料、乳化剂、成核剂和去离子水的质量分数分别为 16%、1.6%、2.4%和 80%）和剪切工艺（剪
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切速率 50 ks ，持续 5 min）。对制备的换流阀冷却用相变乳状液进行了对流换流系数、电导率、带电稳定性以
及与冷却系统兼容性等分析。结果表明，与去离子水相比，所制备的相变乳状液的表观比热容提升了约 50%，
换热能力提升了 2 倍左右。其电导率、绝缘耐压等关键性能参数均能满足高压条件下换流阀冷却的应用要求。
关键词：换流阀；冷却系统；冷却介质；相变乳状液；对流换热系数；表观比热容；功能材料
中图分类号：TB34 文献标识码：A 文章编号：1003-5214 (2022) 01-0086-09

Preparation and performance of phase change dispersion for

converter valve cooling system

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ZHOU Jianhui , WANG Hang , LIU Shan , WEI Xiaoguang , HE Zhiyuan , QIAO Geng
（1. Global Energy Interconnection Research Institute, Beijing 102211, China; 2. Global Energy Interconnection
Research Institute Europe GmbH, Berlin 10623, Germany）
Abstract: In order to improve the cooling capacity of the converter valve, phase change dispersion (PCD)
for converter valve cooling system were prepared using phase change materials (CrodaTherm TM 47 and
CrodaTherm TM 53), emulsifiers (stearyl alcohol polyether Brij TM S2 and oleic alcohol polyoxyethylene
ether Sympatens AS-100), nucleating agent (polyvinyl alcohol) and deionized water as raw materials. The
effects of formulation and preparation process of PCD on the properties of PCD were investigated. The best
formulation (the mass fractions of phase change material, emulsifier, nucleating agent and deionized water
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being 16%, 1.6%, 2.4% and 80%, respectively) and shear process (shear rate 50 ks , lasting time 5 min)
were determined. The convective heat transfer coefficient, conductivity, voltage stability and compatibility
with cooling system of PCD for converter valve cooling system were analyzed. The results showed that
compared with those of deionized water, the apparent specific heat capacity of PCD was increased by about
50%, and the heat transfer capacity was increased by about 2-fold. The key performance parameters such as
conductivity, insulation and withstand voltage could meet the cooling application requirements of the
converter valve.
Key words: converter valve; cooling system; cooling medium; phase change dispersion; convective heat
transfer coefficient; apparent specific heat capacity; functional materials

随着高压直流输电（HVDC）技术的发展，换 重的损耗问题。目前，水冷显热的冷却方式被广泛
流阀在运行中会承担较高电压，并因大电流带来严 应用，但其存在冷却效率低、温度分布不均以及尺寸

收稿日期：2021-05-10; 定用日期：2021-08-04; DOI: 10.13550/j.jxhg.20210476
基金项目：国家电网公司总部科技项目（5500-201958518A-0-0-00）
作者简介：周建辉（1976—），男，博士，教授级高级工程师，E-mail：yzhou130@163.com。