110kW温排水升压泵永磁调速节能改造  

作　　者：尹恒 陈宇 

机构地区：[1]湖北华电西塞山发电有限公司,湖北黄石435000

出　　处：《科技创新与应用》2020年第35期70-72,共3页Technology Innovation and Application

摘　　要：某电厂110kW/1480rpm温排水升压泵,实际运行中,由于工艺上对水量的需求远低于设计值,只能通过关小阀门的方式进行节流,但此种运行方式,导致大量的能耗浪费在阀门挡板上;同时由于管网曲线改变,使得系统处于非经济运行区间,设备整体能耗偏高。而且,因现场设备未加任何调速装置,目前的马达直接启动,水泵全速运行,存在能耗严重、启动电流较大、检修维护工作量大及比较难启动等问题。为了解决这些问题,某电厂采用沃弗永磁调速器替代原有的联轴器,把原来的硬联接改为非接触性的软联接,解决安装对心问题,减少设备振动,提高电机与负载的可靠性,减少设备维护,并能降低负载的转速,达到降速节能的目的。采用永调速改造后,可开环运行手动调节,也可根据液位进行自动调节,避免设备的频繁启动,减少补水量,节能电能。In the actual operation of the 110kw/1480rpm thermal drainage booster pump in a power plant,because the demand for water in the process is far lower than the design value,it can only be throttled by turning off the valve,but this operation mode leads to a large amount of energy consumption wasted on the valve baffle;at the same time,due to the change of the pipe network curve,the system is in the non-economic operation zone,and the overall energy consumption of the equipment is on the high side.Moreover,because the field equipment does not add any speed regulation device,the current motor starts directly and the water pump runs at full speed,which has some problems,such as serious energy consumption,large starting current,heavy workload of maintenance and difficult to start and so on.In order to solve such problems,a power plant uses W-F permanent magnet governor to replace the original coupling,changing the original hard connection to a non-contact soft connection,solving the problem of installation centering,reducing equipment vibration,and improving the reliability of motor and load,so as to reduce equipment maintenance and the speed of the load to achieve the purpose of speed reduction and energy saving.After the transformation of permanent speed regulation,the open-loop operation can be adjusted manually or automatically according to the liquid level,in order to avoid frequent start-up of equipment,reduce water supply and save electric energy.

关 键 词：永磁调速器 节能原理 改造方案 

分 类 号：TM56[电气工程—电器]