| 活塞式膨胀机的性能分析与试验验证 |
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| 引用本文： | 虞启辉,李晓东,李晓飞,田利,谭心,张业明.活塞式膨胀机的性能分析与试验验证[J].液压与气动,2022,0(8):34-43. |
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| 作者姓名： | 虞启辉 李晓东 李晓飞 田利 谭心 张业明 |
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| 作者单位： | 1.内蒙古科技大学 机械工程学院, 内蒙古 包头 014010;2.流体动力与机电系统国家重点实验室, 浙江 杭州 310027;3.气动热力储能与供能技术北京市重点实验室, 北京 100191;4.河南理工大学 机械与动力工程学院, 河南 焦作 454000 |
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| 基金项目： | 国家自然科学基金地区基金(52065054);流体动力与机电系统国家重点实验室开放基金(GZKF-202016);北京高等学校卓越青年科学家计划(BJJWZYJH01201910006021) |
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| 摘 要： | 针对活塞式膨胀机的工作过程,利用能量方程、气体状态方程、拉格朗日方程等建立了非线性瞬时的热力学和动力学模型,实现对系统的精确建模和性能研究。利用MATLAB/Simulink得到的仿真转速/功率与实验平台测得的转速/功率进行比较,验证了数学模型的正确性。通过仿真模型研究了进气压力、负载扭矩对活塞式膨胀机系统性能的影响,并分析了进气温度对系统性能的影响。研究表明:在一定压力条件范围内,随着负载扭矩的增加,活塞式膨胀机的输出功率和效率分别增大到一定峰值后减小,最大峰值功率为3.97 kW,最大峰值效率为38.8%;负载扭矩40 N·m,进气压力2 MPa时,排气阶段的压力为 0.55 MPa,占进气压力的27.8%;提高进气温度会提高系统的输出功率和效率。
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| 关 键 词： | 活塞式膨胀机 拉格朗日方程 输出功率 效率 进气温度 |
| 收稿时间： | 2021-11-11 |
Performance Analysis and Experimental Verification of Piston Expander |
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| YU Qi-hui,LI Xiao-dong,LI Xiao-fei,TIAN Li,TAN Xin,ZHANG Ye-ming.Performance Analysis and Experimental Verification of Piston Expander[J].Chinese Hydraulics & Pneumatics,2022,0(8):34-43. |
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| Authors: | YU Qi-hui LI Xiao-dong LI Xiao-fei TIAN Li TAN Xin ZHANG Ye-ming |
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| Affiliation: | 1. School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou, Inner Mongolia 014010;2. State Key Laboratory of Fluid Power and Electromechanical Systems, Hangzhou, Zhejiang 310027;3. Beijing Key Laboratory of Pneumatic Thermal Energy Storage and Energy Supply Technology, Beijing 100191;4. School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000 |
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| Abstract: | According to the working process of piston expander, the nonlinear transient thermodynamics and dynamics models are established by energy equation, gas state equation and Lagrange equation, so as to realize the accurate modeling and performance study of the system. The simulation speed/power obtained by MATLAB/Simulink is compared with the speed/power measured on the experimental platform, and the correctness of the mathematical model is verified. The influence of the intake pressure and load torque on the system performance of piston expander are studied by simulation model, and the influence of the intake air temperature on system performance is analyzed. The results show that with the increase of load torque in a certain pressure range, the output power and efficiency of the piston expander increase to a certain peak and then decrease. The maximum peak power is 3.97 kW and the maximum peak efficiency is 38.8%. When the load torque is 40 N·m and the intake pressure is 2 MPa, the exhaust pressure is 0.55 MPa, representing 27.8% of the intake pressure. Increasing the intake air temperature will improve the output power and efficiency of the system. |
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| Keywords: | piston pneumatic expander Lagrange equation output power efficiency intake air temperature |
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