提高活塞式单级制冷压缩机K_e值及可靠性研究  

Improvement of K_e and Reliability of the Single-Stage Reciprocating Refrigeration Compressors

作　　者：王子彪[1] 朱立[2] 王珏[3] 李云霞 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]武汉商业服务学院机电工程系,湖北武汉430050 [3]长春工程学院能源动力学院,吉林长春130012 [4]烟台市芝罘区环保局,山东烟台264001

出　　处：《沈阳建筑大学学报（自然科学版）》2008年第6期1070-1074,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：山东省技术创新项目(9010123025)

摘　　要：目的为提高中小型活塞式单级制冷压缩机在大压比工况下的单位功率制冷量Ke值等综合性能指标.方法采用数值计算及试验的方法对压缩机的性能进行分析研究,优化气阀结构,用有限元法进行结构强度设计.结果在缸径100 mm、行程100 mm、转速1 485 r/min、工质R717、工况+30℃/-15℃下,研制的制冷压缩机全性能试验结果,单位功率制冷量Ke值达到3.62 kW/kW,已超过目前国际同类产品水平,该压缩机填补了国内空白.对气阀运动规律进行了试验数据的对比,模拟计算结果与试验结果吻合较好,证明所建立的模型基本正确,模型能良好地反映实际气阀运动规律,能提出一些切实可行的压缩机结构参数,并由此决定制冷压缩机设计的最佳选择.结论数学模型及理论分析可靠,结论可信,为工程实际提供了理论参考依据.This paper studies how to improve the refrigeration capacity per unit power（Ke）of the small and medium - sized single stage piston refrigeration compressor in the working condition of high pressure ratio. We used numerical calculation and experimentation to analyze the performance of the compressor and optimize the valve structure. And we also used finite element method to devise structural strength. As a result, the full performance tests of the refrigeration compressor showed the refrigeration capacity per unit power （Ke）achieved 3.62 kW/kW when at ＋ 30 ℃/- 15℃, with the diameter of cylinder being 100 mm, the stroke 100 mm, the rev 1485 r/min and the refrigerant R717. The simulative calculation result preferably match the experimentation result, which proves our method is basically correct. The research indicates that mathematics model and theory analysis of the research is credible, and it offers theoretical reference for project practice.

关 键 词：制冷压缩机 计算机模拟 结构优化 综合性能指标 气阀系统 

分 类 号：TB651[一般工业技术—制冷工程] TH457[机械工程—机械制造及自动化]