1) water wall
水冷壁
1.
Analysis of thermal stress of slag layer for emergency shutdown in water wall gasifier;
水冷壁气化炉紧急停车渣层热应力分析
2.
Calculational method and influence analysis on temperature of water wall in natural circulation boiler;
自然循环锅炉水冷壁温度计算方法及影响因素分析
3.
Reason analysis on the abnormal metal temperature on water wall tube of ultra supercritical boiler;
超超临界锅炉水冷壁壁温异常原因分析
2) water-wall
水冷壁
1.
Before installation,it has been discovered that the boiler water-wall pipes with small diameter and large wall-thickness of ultra-supercritical units in second-phase project for Huaneng Yuhuan Power Plant have comparatively serious unfused weld-joint defects,needing to carry out a large amount of inspection.
华能玉环电厂二期超超临界机组锅炉水冷壁小径厚壁管安装前发现焊缝存在较严重的未熔合缺陷,需进行大量检测。
2.
Welding water-walls of boiler through SAW method,how to improve the speed of welding is a technical point on the basis of ensuring the quality of welding joints.
使用埋弧焊(SAW)进行锅炉水冷壁管屏生产时,如何在保证焊接质量的前提下,提高焊接速度是需要解决的技术难点。
3.
The corrosion fatigue is a kind of failure commonly occurred on the water side of water-wall tubes in boiler,having strong covertness and large damaging force,threatening seriously safe production in power plants.
腐蚀疲劳是锅炉水冷壁管水侧常见的失效类型,其隐蔽性强,破坏性大,严重威胁电厂的安全生产。
3) waterwall
水冷壁
1.
The waterwall corrosion of 410t/h boiler and how to deal with it;
410t/h锅炉水冷壁的腐蚀及处理措施
2.
Analysis on waterwall tube bursting of Unit 3 boiler in Shajiao C Power Plant;
沙角C电厂3号锅炉水冷壁管爆管原因分析
3.
Analysis and improvement of fireside corrosion of No.1boiler s waterwall tubes at burners site in Leiyang Power Plant;
耒阳电厂1号炉燃烧器位置水冷壁管向火侧腐蚀分析及改进
4) water cooling wall
水冷壁
1.
Analysing of water cooling wall gas side corrosion in 4~# boiler in Shanxi Branch;
山西分公司4~#锅炉水冷壁管烟气侧腐蚀分析
2.
Analysis of unsteady temperature field of film water cooling wall of boiler with low cycle number;
低倍率锅炉膜式水冷壁壁温分布的暂态分析
3.
from aspects of slagging,jam of air preheator,low temperature corrosion,water cooling wall high temperature corrosion,high ash combustible content,and also put forward the material measures,at the same time,points out some problems may not be handled for the structure of boiler.
5-M型锅炉在运行中出现结焦、空气预热器堵塞和低温腐蚀、水冷壁高温腐蚀、飞灰含碳量高等问题的原因,并提出解决问题的具体措施,同时指出锅炉燃烧系统自身结构致使某些问题不能得到根本解决。
5) water cooled wall
水冷壁
1.
The cause and preventive measure of the high temperature corrosion of water cooled wall tube metals in A100MW boiler burning lean coal;
燃贫煤100MW机组锅炉水冷壁高温腐蚀的原因分析预防对策
2.
The quality of power coal in our country is rather inferior,and its ash and sulfur content is higher,as well as the coal type of power station boiler is diversified,thus water cooled wall always occurs the phenomenon of pollution and coal cinder,therefore induces high-temperature corrosion on water cooled wall,and this directly influences safe and economical operation of boiler.
我国动力用煤的质量偏差,含灰量、硫量都较高,一般电站锅炉燃用煤种多样,经常会发生炉内水冷壁沾污或结渣现象,引起水冷壁的高温腐蚀,严重影响锅炉的安全与经济运行。
3.
Cause analysis of the water cooled wall tube burst focused on irrational points of design,excessive thermal loading,changes of coal category,burner defects and deposits in throttle valves.
着重从锅炉设计不合理、热负荷过高、煤种变化、燃烧器的缺陷及节流阀结垢等方面分析了水冷壁爆管的原因,指出必须进行锅炉改造。
6) water-cooled wall
水冷壁;水冷却壁
补充资料:水冷壁
敷设在锅炉炉膛内壁、由许多并联管子组成的蒸发受热面。水冷壁的作用是吸收炉膛中高温火焰或烟气的辐射热量,在管内产生蒸汽或热水,并降低炉墙温度,保护炉墙。在大容量锅炉中,炉内火焰温度很高,热辐射的强度很大。锅炉中有40~50%甚至更多的热量由水冷壁所吸收。除少数小容量锅炉外,现代的水管锅炉均以水冷壁作为锅炉中最主要的蒸发受热面。
水冷壁按结构分为光管式和膜式两种。
光管式水冷壁 由一般的锅炉钢管组成(图1)。管子排列越密对炉墙保护效果越好。炉墙广泛采用轻质耐火材料和保温材料。这些材料可以砌成炉墙,也可敷设在水冷壁上成为敷管式炉墙以便于安装。
膜式水冷壁 将鳍片管(或扁钢与光管)相互焊接在一起组成的整块管屏(图2)。它的优点是气密性好;管屏外侧仅需敷以较薄的保温材料,炉膛高温烟气与炉墙不直接接触,有利于防止结渣;管屏可在制造厂成片预制,便于工地安装。
水冷壁材料 一般用碳素钢。锅炉压力在14兆帕以上时也有部分用合金钢的。管子外径:自然循环锅炉一般用51~83毫米;多次强制循环锅炉和直流锅炉一般用22~60毫米。直流锅炉的水冷壁不像自然循环锅炉那样一定是直立式的,也可以是水平围绕或其他形式的。参数高时,尤其在直流锅炉中,为了在炉膛高热负荷区防止传热恶化,常采用内螺纹管或在管内装设扰流子(图3)。
水冷壁按结构分为光管式和膜式两种。
光管式水冷壁 由一般的锅炉钢管组成(图1)。管子排列越密对炉墙保护效果越好。炉墙广泛采用轻质耐火材料和保温材料。这些材料可以砌成炉墙,也可敷设在水冷壁上成为敷管式炉墙以便于安装。
膜式水冷壁 将鳍片管(或扁钢与光管)相互焊接在一起组成的整块管屏(图2)。它的优点是气密性好;管屏外侧仅需敷以较薄的保温材料,炉膛高温烟气与炉墙不直接接触,有利于防止结渣;管屏可在制造厂成片预制,便于工地安装。
水冷壁材料 一般用碳素钢。锅炉压力在14兆帕以上时也有部分用合金钢的。管子外径:自然循环锅炉一般用51~83毫米;多次强制循环锅炉和直流锅炉一般用22~60毫米。直流锅炉的水冷壁不像自然循环锅炉那样一定是直立式的,也可以是水平围绕或其他形式的。参数高时,尤其在直流锅炉中,为了在炉膛高热负荷区防止传热恶化,常采用内螺纹管或在管内装设扰流子(图3)。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条