微振动组合式空调机组的研制

Development of Micro-vibration Combined Air Conditioning Unit

微环境的控制对大型科学装置的正常运转十分关键。应某地下大型工程需要,研制1Hz以上RMS(均方根)振幅小于150 nm的微振动组合式空调机组。根据工程流体力学实用原则,利用风机性能曲线选择风机,兼顾电动机常见振动故障成因。研制产品采取三级减振技术措施,并应用动态信号测试分析系统,分别进行硬质地面和楼板地面测试。研制检验结果表明,组合式空调机组可以实现RMS振幅小于150 nm的微振动技术目标。总结的研制过程、试验方法和结论可为同类工程提供借鉴。

The control of microenvironment is very important for the normal operation of large scientific devices.To meet the requirements of a large underground project,a micro-vibration combined air conditioning unit with root mean square(RMS)amplitude less than 150 nm above 1 Hz is developed.According to the practical principle of engineering fluid mechanics,the fan is selected by the fan performance curves,and the causes of comm on vibration faults of motor are considered.The developed product adopts three-level vibration reduction technical measures,and uses the dynamic signal test and analysis system to test the hard ground floor and storey floor respectively.The test results show that the combined air conditioning unit can achieve the technical goal of micro-vibration with RMS amplitude less than 150 nm.The development process,test method and conclusion can provide reference for similar projects.