不同材质换热管内流体诱导振动阻垢技术研究  

Scale prevention with flow induced vibration in heat exchanger tubes of different materials

作　　者：张锁龙[1] 张锁荣[2] 肖立川[1] 

机构地区：[1]江苏工业学院机械工程系 [2]江苏技术师范学院

出　　处：《石油机械》2004年第5期1-3,6,共4页China Petroleum Machinery

基　　金：中国石化集团公司资助 (项目号 :X5 960 3 8)

摘　　要：采用CaCO3饱和溶液作换热介质 ,对常规碳钢和不锈钢制作的光管换热管和内置圆珠构件换热管开展了防止污垢沉积的实验研究。实验研究结果表明 :(1)换热管内置圆珠构件使管内流体出现卡曼涡街现象 ,增加流体湍流度 ,破坏了壁面附近的层流层 ,可限制污垢在壁面沉积 ;(2 )内置的弹性珠构件在流体带动下不断与邻近管壁碰撞、冲刷 ,诱导流体振动使沉积在管内壁的污垢自行脱落 ,具有自清洁效果 ;(3)An experiment is conducted for scale prevention of heat exchanger tubes with built-in round ball by taking CaCO 3 saturate solution as heat exchange medium. The result of the experiment shows that, (1) the built-in round ball produces Karman vortex street of the flow in the tube and increases the turbulivity of the fluid, therefore it can prevent the deposition of the fouling in the tube wall; (2) the ball impacts the adjacent tube wall under the action of the flow, resulting in the vibration of the flow and falling off of the fouling; (3) the built-in ball has the same effect of anti-fouling on both the carbon steel and the stainless steel.

关 键 词：换热管 流体诱导振动阻垢技术 CACO3 换热介质 碳钢 传热速率 

分 类 号：TE965[石油与天然气工程—石油机械设备]