小舜江输水泵站液控蝶阀关阀时间及停泵方式改进

Hydraulic control butterfly valve closing vale time and pump stooping method improvement for the Xiaoshunjiang water transfer pump station

大流量高扬程长距离输水工程供水泵站常采用二阶段液控调节蝶阀来最大限度降低关阀水锤。小角度关阀时间长,加之常规关阀停泵的方式,通常会引起机组、管路及阀门较大的振动。从泵站实际特点出发,尽量缩短关阀时间,改变常规关阀停泵方式,有效减小了振动和噪声。

The two-stage hydraulic control butterfly valve is usually used to reduce the closing valve water hammer in the high flow rate and long distance water supply pump station, which will usually cause long closing valve time with small angle and take the conventional closing valve method to stop the pump. This method will normally cause violent vibration on pumping unit, pipeline, and valve. Based on practical characteristics （use the principles of water-pumping and energy-saving）, in this paper the valve closing time was reduced as much as possible to change conventional pump stopping method, which was proved to be able to reduce the vibration and noise.