单螺杆压缩机机械密封的研究与改进
发布时间：2018-08-28 17:55
【摘要】：本文介于金昊空压机厂单螺杆压缩机漏油严重的现象，设计出双列反向螺旋槽上游泵送机械密封，对其进行了解析计算，并运用有限元软件ANSYS及FLUENT，对稳态密封环的温度场、稳态端面之间的压力场进行了模拟，得出了该密封环的压力场、温度场分布。研究了不同的摩擦副配对材料、密封介质压力、主轴转速等对密封端面温度的影响；并讨论了密封腔压力、转速、密封介质的粘度对机械密封的一些稳定性能参数的影响，为设计、优化机械密封提供了理论指导作用。模拟结果证明了该设计的正确性，变转速或变压力条件下，所设计的新型密封性能良好,端面温升及摩擦功耗都较低，较普通的机械密封性能好，较单列的螺旋槽上游泵送机械密封性能也有所改善，满足工业的应用要求。最后对新型机械密封进行了经济性的分析，使其在功能和经济上均达到要求。同时，，本文对于解决其他机械密封的泄露问题，具有一定的指导意义和应用价值。
[Abstract]:In this paper, due to the serious oil leakage of single screw compressor in Jinhao Air Compressor Plant, a double-row reverse spiral groove upstream pumping mechanical seal is designed and calculated analytically, and the temperature field of steady sealing ring is calculated by using finite element software ANSYS and FLUENT,. The pressure field and temperature field of the seal ring are simulated. The effects of different friction pairs on the temperature of seal end surface, such as the pressure of sealing medium, the pressure of sealing medium and the rotational speed of spindle, are studied, and the effects of pressure of seal chamber, speed of seal and viscosity of sealing medium on some stable performance parameters of mechanical seal are discussed. It provides theoretical guidance for the design and optimization of mechanical seals. The simulation results prove the correctness of the design. Under the condition of variable rotational speed or variable pressure, the new seal designed has good performance, the end surface temperature rise and friction power consumption are lower, and the performance of mechanical seal is better than that of common mechanical seal. Compared with single row spiral groove upstream pumping mechanical seal performance is also improved to meet the industrial application requirements. Finally, the economic analysis of the new mechanical seal is carried out to make it meet the requirements in function and economy. At the same time, this paper has certain guiding significance and application value for solving the leakage problem of other mechanical seals.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH136
本文编号：2210131
[Abstract]:In this paper, due to the serious oil leakage of single screw compressor in Jinhao Air Compressor Plant, a double-row reverse spiral groove upstream pumping mechanical seal is designed and calculated analytically, and the temperature field of steady sealing ring is calculated by using finite element software ANSYS and FLUENT,. The pressure field and temperature field of the seal ring are simulated. The effects of different friction pairs on the temperature of seal end surface, such as the pressure of sealing medium, the pressure of sealing medium and the rotational speed of spindle, are studied, and the effects of pressure of seal chamber, speed of seal and viscosity of sealing medium on some stable performance parameters of mechanical seal are discussed. It provides theoretical guidance for the design and optimization of mechanical seals. The simulation results prove the correctness of the design. Under the condition of variable rotational speed or variable pressure, the new seal designed has good performance, the end surface temperature rise and friction power consumption are lower, and the performance of mechanical seal is better than that of common mechanical seal. Compared with single row spiral groove upstream pumping mechanical seal performance is also improved to meet the industrial application requirements. Finally, the economic analysis of the new mechanical seal is carried out to make it meet the requirements in function and economy. At the same time, this paper has certain guiding significance and application value for solving the leakage problem of other mechanical seals.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH136
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