煤矿安全2024，Vol.55Issue(6)：59-65,7.DOI:10.13347/j.cnki.mkaq.20231518
煤矿瓦斯抽采液环真空泵新型降温及余热利用方法研究
Research on new cooling and waste heat utilization methods of liquid ring vacuum pump for coal mine gas extraction
摘要
Abstract
The high temperature of gas drainage liquid ring vacuum pump is an important reason for its low operating efficiency and short service life.Based on the wasted power dissipation theory of liquid ring pumps,the heat generation-heat dissipation mechan-ism of the pump was quantitatively analyzed,and an intelligent cooling and waste heat utilization technology for gas extraction pumps based on low-temperature heat pumps was proposed.An engineering test system was developed to investigate the effects of inlet fluid temperature,operating fluid flow rate,ambient temperature and other parameters on the cooling performance of the sys-tem.Taking the 2BEC87 gas extraction pump of Licun Coal Mine as the test object,when the suction negative pressure is-53 kPa and the inlet liquid flow rate is 10 m3/h,the inlet liquid temperature can be reduced from 35 ℃ to 16 ℃,and the operating temperat-ure can be reduced from 54 ℃ to 45℃.The cooling effect is significant,and this technology can improve the operating efficiency of the drainage pump by more than 7%.关键词
瓦斯抽采泵/无用功耗/降温/余热利用/低温热泵Key words
gas extraction pump/useless power consumption/cooling/waste heat utilization/low temperature heat pump分类
矿业与冶金引用本文复制引用
王彦敏,李金石,刘春,刘垒,张一帆,赵春洲..煤矿瓦斯抽采液环真空泵新型降温及余热利用方法研究[J].煤矿安全,2024,55(6):59-65,7.基金项目
国家自然科学基金资助项目(52204251) （52204251）
江苏省自然科学基金资助项目(BK20210502) （BK20210502）
