安装列管换热器的使用说明书1.doc
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2、gal Office 85 villages, 4 community two committees cadre carried out against the peoples mediation law and standardized legal documents, the rural land contracting law and the rule of law training tour of the Marriage Act and other laws and regulations. Meanwhile, the party members of the party scho
3、ol teaching resources and annually to the village (community) the favorable opportunity for the County Clerk training 23,000 rural pave the way for the law and the 1972 legal advocacy Center legal publicity and education, increase their use of legal means to manage rural services, the ability to pre
4、vent and deal with conflicts and disputes. (Assessment points 3 points, since assessment 3 points) 13. increased on farmers workers Franco-Prussian education efforts, regularly in-depth to farmers workers concentrated live to, and work places and the main activities places carried out regular of rul
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6、ning. Franco-Prussian Union-related functions in the County Fairgrounds, station distribution center for migrants, legal service through the establishment of enquiry points and propaganda materials, sent out vans, station electronic display rolling, installation of car popularization anime and other
7、 forms of floating on the rule of law publicity and education activities. Positive return during the legal education of migrant workers, improve migrant workers law concept and awareness of labor rights according to law. For five years, and floating population of migrant workers, the rule of law pub
8、licity and education activities reached more than 600 times, issue the labor contract law, the census law, literature, more than 10,000 copies. (Assessment points 3 points, since assessment 3 points) three, and to innovation seeking development, further deepening rule of law publicity education of w
9、ay method, solid advance 65 Franco-Prussian target task of completed (assessment points 30 points, since assessment 30 points) 1. to legal six into activities for carrier, to I County 193 support rule of law publicity literary team for relies on, take masses joy Le see of national dance, and sketch,
10、 publicity way, active advance area within rule of law publicity education activities, County minority masses, and Religious clergy and religious peoples legal awareness is increased further. (Check with 3 points, scoring 3 points) 2. promote legal six kinds of entering activities, and vigorously ex
11、pand law six kinds of entering connotation and extension activities, establish a legal six kinds of entering model typical, typical leading and exemplary role in promoting the rule of law publicity and education work in our County, the County set up legal six kinds of entering model typical of 11. (
12、Check with 3 points, self-evaluation-3) 3. carrying out who is in charge of who Franco-Prussian, who law enforcement who legal principle, enactment of the XX County implement who is in charge of who列管换热器一、 概述列管换热器是一种高效换热器。它主要由传热板、定距柱、连接管、头盖及衬垫等部件组成。两块厚约6mm的金属板卷成一对同心圆的螺旋形流道,流道始于中心,终于边缘。中心处用隔板将两边流体隔开,
13、甲、乙两流体在金属板两边的流道内逆流流动而实现了热交换。本公司目前生产全逆流式结构的列管换热器。二、 列管换热器的工作特点和应用列管换热器的性能类似于板式换热器。但也有其独特之处,其主要优点为:1、传热效率高。列管换热器内介质螺旋型流动的离心力能增强湍流。据实验,当Re=14001800时就能形成湍流,且因流阻较管壳式小而使流速可以提高,结果使传热系数K可提高至2.5倍。此外,全逆流列管换热器的传热平均温差最大,这有助于提高传热效率。2、结构紧凑,不用管材。由于板型传热面的面积大,单位体积传热面可达44-100m2/m3,约为管壳式换热器的23倍,加之传热系数和平均温差都大,这就必然导致结构的
14、紧凑和轻巧。3、不易污塞。由于单流道、高流速、污垢不易沉积,一旦有所沉积使流道截面减小随即导致流速增高,从而加强了对污塞物的冲刷作用。这种“自洁”作用,管壳式换热器是没有的。据统计显示,列管污塞的速率只及管壳式的十分之一。4、能有效利用低温热源,精密控制温度。由开双螺旋流道能较完全地形成逆流传热且流道较长,有助于降低换热器设计所允许的(两种介质之间)有利于连续均匀地换热或升降温度。这就为利用一些低温热源(如地下热源)或精密控制介质温度提供了有利条件,从经验数据知道,板式和列管换热器的介质温差是最低的。5、流阻较小。试验表明,与同样条件的管壳式换热器相比,列管换热器的流阻较小。列管换热器相对于列
15、管式换热器,也有其自身的不足之处。在设计、制造和安装使用过程中需要注意掌握的有以下几个方面:承压能力受限。这一点在安装使用当中,要求用户按铭牌上的设计参数使用,不可超压和超温工作;以保证其安全使用。容量受限。由于单流道流通能力较小。故介质的体积流量受到限制,流道不能过大,否则,流阻增大,使输送动力消耗加大。制造复杂,传热部分和密封部分制造比较复杂。总之,列管换热器优点突出,已经广泛应用于化工、食品、医药等部门。列管换热器在使用过程中,还可以切换通道,利用一侧流体去冲刷另一侧流道的污垢,但应注意对于易生硬垢的介质不宜采用。另外,如果用作冷凝器使用时,必须立式放置,其它情况立卧放置均可。三、 设计
16、选型说明1、 列管换热器的选型要符合生产工艺要求,一般按本公司随机附送彩页样本选用。2、 单机能力不够时,可多台并联式或串联或混合使用。这样可以弥补单台容量较小的不足。串联时,换热器的板宽和通道间距相同;并联时只限于同一规格换热器;混合组合,一个通道并联,一个通道串联,只限于同一规格的换热器。3、 其它需在选材、设计、工艺等方面特殊考虑的,请与本公司技术支持工程师联系,根据工艺特点具体确定。四、 安装使用说明1、 设备安装,应请熟悉该系统工艺的工程技术人员指导,按照本说明书和产品质量证明书及其系统工艺特点,确定安装工艺方案。在安装中,应考虑尽量利用管道的走向吸收热膨胀,并且安装要水平、对正,不
17、能产生附加应力,以免对设备造成不利影响。管道联接应使两流程完全逆流状态,以提高传热效果。2、 安装之前应清洗管道系统,不得有泥砂、杂物等存留其中;检查换热器在运输中是否损坏,是否有大杂物落入管口中。3、 设备安装完毕,设备与系统应进行水压试验。4、 水压试验完毕,应对设备进行保温。5、 循环必须软化或加药处理。(按低压锅炉水质标准GB1576-96),由于水处理不当造成结垢,可用化学清洗除垢。五、操作运行1、开机时,先打开冷侧介质阀门,并排出空气,再打开热侧介质阀门,关时反之。开关阀门应慢速进行;对于通过减压阀之后再进入换热器的系统,开机时,应最后打开减压阀后的阀门,关机时相反。2、对于可拆式
18、换热器,在温度上长升后至正常操作期间,对端盖螺栓应重新紧固一遍,注意紧固顺序,防止偏斜。3、必顺在产品铭牌规定参数以下运行,不得超压超温使用。4、停机期限间,应将换热器内清洗干净并充入除氧水封存保养。六、维护保养1、定期检查换热器的腐蚀情况,并进行清洗。2、使用过程中压力突然增加时,首先检查换热器内是否有严重堵塞现象。3、碳钢设备应定期刷油漆防腐。七、技术资料保管列管换热器的技术档案应妥善保管,以保证使用、技术总结,移装等需要,其资料应包括:1、 随机出厂图纸用技术文件(安装使用说明书、产品质量证明书等);八、接口方案接 口ABCD方 案 一介质1进介质1出介质2进介质2出方 案 二介质1出介
19、质1进介质2出介质2进注:如果附有图纸说明,请按图纸所标接口为准!操作说明书一、工艺流程说明1、工艺说明 换热器是进行热交换操作的通用工艺设备,广泛应用于化工、石油、石油化工、动力、冶金等工业部门,特别是在石油炼制和化学加工装置中,占有重要地位。换热器的操作技术培训在整个操作培训中尤为重要。 本单元设计采用管壳式换热器。来自界外的92冷物流(沸点)由泵P101A/B送至换热器E101的壳程被流经管程的热物流加热至145,并有20%被汽化。冷物流流量由流量控制器FIC101控制,正常流量为12000kg/h。来自另一设备的225热物流经泵P102A/B送至换热器E101与注经壳程的冷物流进行热交
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