转动式限流孔板降低输水管道爆管泄流量的研究  

Application of Rotary Flow-limiting Orifice Plate to Reduce Discharge from Burst Water Transmission Pipeline

作　　者：蒋白懿[1] 丁宁[1,2] 刘培青[1] 高健 赵洪宾[4] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]沈阳都市建筑设计有限公司,辽宁沈阳110015 [3]天津三博水科技有限公司,天津300041 [4]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2015年第3期64-68,共5页China Water & Wastewater

摘　　要：为了降低输水管道因水锤爆管事故产生的泄流量,结合工程案例,在输水管道中设置转动式限流孔板,并比较有无限流孔板工作时的爆管瞬变流状态。计算结果显示:无水锤防护措施下,爆管处产生的泄流量为118 m3/s;有转动式限流孔板工作时,爆管处产生的泄流量为40 m3/s;限流孔板与关阀并用时,爆管处产生的泄流量为19 m3/s。由此表明,在爆管事故发生后,采取转动式限流孔板与关阀并用的措施可以有效降低事故泄流量,减小爆管事故的危害。To reduce the discharge during an accident of pipeline burst caused by water hammer, the rotary flow-limiting orifice plate was installed in a water transmission pipeline, and the transient flow states in the burst pipes with and without the rotary flow-limiting orifice plate were compared. The calculation results showed that the discharges from the burst pipes were 118 m^3/s, 40 m^3/s and 19 m^3/s respectively in the case of without protective measures of water hammer, with the rotary flow-limiting orifice plate and with combination of the rotary flow-limiting orifice plate and valve closing. It was suggested that when the pipe burst accident occurred, the combination of the rotary flow-limiting orifice plate and valve closing could effectively reduce the discharge and decrease damage from pipe burst.

关 键 词：输水管道 水锤 爆管 转动式限流孔板 

分 类 号：TU991.39[建筑科学—市政工程]