液偶调速电动给水泵节能改造方案解析——行星齿轮变矩调速器与变频器方案对比

Bolier Feedwater Pump Hydraulic Coupler Energy Saving Retrofit Scheme——Compare of Planetary Gear Torque Speed Solution and Variable Frequency Drive Solution

当前火力发电厂锅炉给水泵普遍采用液力偶合器作为调节装置,但是由于液力偶合器的机械结构和调节方式的限制,液力偶合器调节方式存在效率较低和可调范围较小等不足,随着科技发展和技术创新,多种新型调节装置可用于锅炉给水泵调节。介绍了行星齿轮变矩调速器(VORECON)与变频器(VFD)两种新型调节装置的原理、性能、改造方案和费用,通过实际改造案例详细对比了两种方案的改造后实际效果和费用,得出变频器改造方案优于行星齿轮变矩调速器方案的结论。

At present, Boiler feedwater pump in thermal power plant is generally adopts hydraulic coupler as adjusting device; How-ever ,due to the limitations of the mechanical structure and regulation of hydraulic coupling, hydraulic coupler is low efficiency with small adjustable range. With the development of science and technology, a variety of new regulating device can be used as adjusting device for boiler feedwater pump. This paper mainly introduces principle, performance, renovation plan and cost for the planetary gear torque speed （VORECON） and Variable Frequency Drive （VFDS） ; The detailed comparison of effect and cost of two solutions is given by actual cases. Through a series of contrast analysis, this paper consider that Variable Frequency Drive solution is better than the planetary gear torque speed solution.