本文结合实例介绍了旁通定压和二级泵系统在高层建筑空调冷水系统中的合理应用。
Connecting with example this paper introduces the rational application of bypass pressure fixing and secondary pumping system in air conditioning s cooling water system of tall buildings.
近日，齐鲁石化炼油厂连续重整车间加氢裂化高速泵成功改用国产二级机械密封，改造后运行状况良好。
Recently, the CCR of Qilu Petrochemical refinery hydrocracking workshop successful switch to domestically produced high-speed secondary pump mechanical seals, modified to run in good condition.
介绍了乳化液泵采用二级压力控制的液压系统及节能效果分析。
This paper introduces the hydraulic system of emulsion pump using towstep pressure control, analyses its energy conservation effect.
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