机电一体化行星齿轮调速与变频调速应用探讨

Discussion on Application of Mechatronics Planetary Gear Speed Regulation and Frequency Conversion Speed Regulation

[目的]通过介绍行星齿轮调速与变频调速在火力发电厂液力偶合器调节的锅炉电动给水泵组节能改造的应用情况,分析两种方案的适用性。[方法]对行星齿轮调速本身能耗及实际应用案例进行分析,同时与变频调速实际运行情况进行对比,从安全、适用、可调范围、节能等方面,判断火力发电厂液力偶合器调节的锅炉电动给水泵组节能改造是采用行星齿轮调速还是变频调速。[结果]火力发电厂液力偶合器调节的锅炉电动给水泵组节能改造采用变频调速比行星齿轮调速节能率高、可调范围广、更适用且安全性也有足够保证。[结论]火力发电厂液力偶合器调节的锅炉电动给水泵组节能改造,变频调速更为适用。

[Introduction]The applicability of the two schemes is analyzed through the application of planetary gear speed regulation and frequency conversion speed regulation in the energy-saving retrofit of the boiler electric feed pumps regulated by hydrodynamic couplings in the fossil-fuel power station.[Method]Through the analysis of the energy consumption of the planetary gear speed regulation itself and the practical applications,and the comparison with the actual operation of the frequency conversion speed regulation,from the aspects of safety,applicability,adjustable range and energy saving,this paper discussed whether to use planetary gear speed regulation or frequency conversion speed regulation for energy-saving retrofit of boiler electric feed pumps regulated by hydrodynamic couplings in the fossil-fuel power station.[Result]In the application,the frequency conversion speed regulation has a higher energy saving rate,wider adjustable range,and adequate safety guarantee,and is more applicable than the planetary gear speed regulation.[Conclusion]The frequency conversion speed regulation is more suitable for the energy-saving retrofit of the boiler electric feed pumps regulated by hydrodynamic couplings in the thermal power station.