循环流化床锅炉J阀振动原因的冷态试验分析  

Experimental Investigation of J-Valve Vibration in a Circulating Fluidized Bed Boiler

作　　者：李海广[1] 赵增武[1] 吴晅[1] 李保卫 武文斐[1] 

机构地区：[1]内蒙古科技大学内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室,内蒙古包头014010

出　　处：《锅炉技术》2012年第6期19-21,35,共4页Boiler Technology

基　　金：国家自然科学基金项目(51166010);内蒙古科技大学创新基金(2010NC024);内蒙古科技大学产学研培育基金(PY-201017)

摘　　要：循环流化床电站锅炉已经得到了广泛的应用,而J阀是循环流化床锅炉的关键部件,担负着将分离器分离的物料回送到锅炉中,J阀能否正常工作是影响锅炉安全生产的重要影响因素,但是在实际运行中,J阀往往出现堵塞、振动大等现象严重威胁锅炉安全运行。为此在一冷态试验台上,开展了J阀振动原理的试验研究。试验证明:J阀的振动与阀内流动方式密切相关。试验结果为J阀在不同运行工况下,处于不同的回料状态。由于工况的变化带来了不同回料状态的转换,从而引起J阀振动。通过试验有助于循环流化床锅炉J阀现场运行的监视,进而减少J阀的振动现象。Circulating fluidized beds have been used extensively in power station.J-Valve is one of the key equipments of circulating fluidized bed for solids recycling from a gas-solid separator into the riser,the featured characteristics of J-valve determine the boiler safety production.there often occur abnormal phenomena,such as blocking and vibration with threaten boiler safety operation.In this paper experiments completed in a visible cold CFB test rig showed that the abnormal vibration is related to the behaviors of solids flow in J-Valve.At different operation condition the different state ＇ s transition of solids flow cause vibrations in J-Valve.The conclusions drawn in this paper may help to fully monitor and control the operation of equipment to reduce and control the vibration of J-valve.

关 键 词：循环流化床 J阀 振动 试验研究 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]