wy散 装 胀 接 锅 炉 安 装 工 法.doc

videoconference, Secretary of the provincial Committee of Xia Baolong stressed: this year is the "five water treatment" "357" timetables "for three years to resolve outstanding issues, obviously worked," victory of the year. The County's departments at all levels must firmly establish the "guanghui is gold and silver" green development concept, convinced that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment, consistently playing well "five water treatment of" winning the war, ever-higher levels of comprehensive well-off society was built. (A) lay the sewage uphill battle. This year we will "river water quality improved at the county level, up to five" this basic objective grasp of pollution control that focus, with the focus on three things: a good job, "clear rivers" reaching the County created. Organization "look back" special inspection, the County garbage River, black and odorous River is "Dragnet" investigation, timely rectification of problems found in place firmly to prevent river pollution rebound. In accordance with the "one-stop strategy", improving the inferior five water quality monitoring stations work this year to ensure the Elimination of 1 provincial control, five water quality section 3 municipalities controlled deterioration, ensure the creation this year of "clear rivers" standards. Second, pay special attention to pollution-cutting construction of nanotubes. Intercepting nanotubes are the basis of pollution of water source engineering, engineering, matter of success or failure of water management. Urban sewage treatment, to improve "effluent from sewage treatment rate, running accuracy, compliance" requirement, speed up the town's support network construction, is focusing on nanotubes home "last meters" question. Domestic sewage treatment in rural areas, this year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully to ensure the realization of all County 648 formed village coverage. Also, be sure to attach importance to focus on rural domestic wastewater treatment facility operation and management, ensure that wastewater treatment facility up and running, role play, avoid the "Sun" problem. Third, pay special attention to the River Lake pond desilting operation. Provinces now have focused on pollution control of water go to "dig up mud", as the deepening water of this year's "plays". Next, to jump-start an investigation line touches work, implementation plan according to the priorities and the programme of work, in accordance with the "one river one policy" requires detailed cleaning, dredging plan, planning ahead of time cleaning out mud "way out", according to local conditions to do sludge, promote scientific resource utilization of silt and mud. (B) the heavy regulation of heavily polluting industries. Pollution of water must grab the source, wastewater is primarily the source of backward production capacity, increase the intensity of散 装 胀 接 锅 炉 安 装 工 法1、前言在化工安装和工业设备安装工程中，经常遇到蒸发量不超过二十吨的散装胀接锅炉。

这类锅炉一般体积庞大，零部件多，施工程序繁琐，安装周期较长，劳动生产率相对较低我们通过工种实践，对该类锅炉的安装从施工组织，技术管理，质量控制以及施工程序、机具配备等方面作了一些探索，取得了一些经验本工法适用于现场组装的、蒸发量在4~20t/h的散装胀锅炉本工法的特点是：在锅炉安装全过程中，推行先进的施工工艺，采取科学的管理办法，对安装质量预控，提高工程质量；尽量提高机械化施工程度，减轻劳动强度，提高生产率和经济效益二、工艺原理及特点（一）工艺原理散装胀接锅炉安装主要有以下几个步骤：1.锅炉钢架的安装；2.锅炉受热面安装；3.炉管的胀接；4.其它部件和辅机的安装在以上步骤中，炉管胀接是最重要的，也是较容易出问题的工序，它对整台炉的安装质量起决定性作用因此，安装过程中，在兼顾全面的同时，将炉管胀接作为质量控制的重点，给予充分重视胀管的原理是；利用金属塑性变形和弹性变形的性质，在胀接管头插入汽包管孔中后，利用胀管器从管内壁施加径向力向外扩张，使管头产生塑性变形当管外径与管孔壁完全接合，径向力开始传到管孔壁上，使管孔产生一定的弹性变形当胀管达到要求退出胀管器以后，被胀大的管子外径（已产生塑性变形）基本保持不变，而管孔由于只产生了弹性变形，当外力撤去后，就力图恢复原状，其弹性力将管子牢牢箍紧，达到胀接目的。

二）工艺特点1.采用多工种平行流水线作业，尽量缩短施工期2.炉管校对采用校管平台，按实际尺寸放样，提高校管精确程度，保证锅炉安装质量3.炉管退火采用“铅浴法”，用热电偶控制温升，加热均匀，温控准确，退火质量高4.管头处理采用电动磨管机，磨削均匀，质量好，效率高5.胀接采用电动胀管机，由2011二级《建筑工程》备考试题自动控制仪自动控制按经过试胀预选的胀管率进行炉管胀接机械化程度高，胀紧程度易于掌握三、施工工艺(一)锅炉安装施工工艺流程图见图一二)锅炉施工网络图见图二三)施工工艺要点1.锅炉钢架安装（1）锅炉钢架采用现场分散组对的方法进行安装安装前依据基础图和钢架图精确定位放线2）钢架应安装一件，找正一件严禁在未找正的构件上进行下一工序的安装工作，以免造成难以消除的积累误差2011二级《建筑工程》备考试题图一：锅炉安装施工工艺流程图施工准备→设备清点→检查校对 → 炉管退火→ 管头磨光基础验收→定位放线→钢架组装 → 汽泡安装→ 胀 管水冷壁安装 →预热器安装→省煤器安装→本体管安装→水压试验燃烧系统安装→筑 炉→烘 炉→ 煮 炉 → 试运行 辅机安装→烟风道安装→电仪安装→辅机试运→竣工验收图二：锅炉施工网络计划2011二级《建筑工程》备考试题基础验收（2）定位放线（2）刚架组装（3）胀管（3）汽包安装（3）施工准备（1）设备清点（2）检查校对（2）炉管退火（2）管头磨光（2）水冷壁安装（3）预热器安装（3）省煤器安装（3）辅机安装（6）水压试验（4）燃烧系统（3）筑炉（5）烘炉（5）本体管安装（3）风道安装（6）电仪安装（6）辅机试运（6）煮炉（5）试运行（7）总体验收（17）竣工 （3）为了防止焊接变形，可视具体部位采用对称焊接或在焊口附近予加拉撑等措施。

2.汽泡安装（1）先安装有支座的一个汽泡（一般为上汽泡），该汽泡找正后加临时固定，防止在以后的安装过程中移位2）另一个汽泡（无支座的汽泡）放置在可调节的临时支架上，以上汽泡为基准对其进行找正3）汽泡纵横方向的水平以其上的水平中分线（一般制造厂应在汽泡两端作出标记，现场复查）为基准，用玻璃管水平仪进行找平下汽泡的纵横中心位置从上汽泡中心往下吊垂线进行检查3.受热面管子的安装(1)管子的检查和校正管子在校管平台上进行检查 和校正校管平台上应放出弯管大样，将炉管逐根进行检查如有超差现象应予以校正2）管子检查完毕，应进行编号编号应醒目且具有方向性即在安装过程中，不至于搞错方向3）管端退火用铅浴法对胀接管管端进行退火，退火长度不小于100㎜，退火温度为600。