除尘系统的供配电设计.doc

摘 要 现代钢铁厂的高炉出铁场现场灰尘十分严重，影响出铁质量和人员健康。根据某钢铁厂的出铁场取得的供电电源以出铁场除尘系统部分的风机和电动阀门为对象，设备的用电负荷的实际情况及负荷性质、负荷大小和设备现场的具体的分布情况，设计出除尘系统供配电的主接线设计方案和配电线路方案。 对于高压风机提出了采用高压专线直接供电的方式，解决了高压风机负荷大而求负荷可靠性要求高的问题。对于低压电动阀负荷采用依附于可靠性与除尘系统相同的输灰系统，来解决了低压电动阀负荷太小但可靠性要求较高的问题，完成了供配电的设计。本设计具有接线简单，设备使用少，同时可靠性高。 关键字 除尘，高压直供，动力，配电  ABSTRACT According to a steel mill out power supply and the plant out of the iron iron dust removal system parts, equipment with the actual conditions of power load and load characteristics, load size and the distribution of the specific equipment site, design the dust removal system main wiring design of power supply and distribution line. For high pressure air blower adopts high voltage line direct power supply was proposed, to solve the load high-pressure blower load big, the problem of high reliability requirements. For low voltage electric load using attached to the valve the same ash conveying system reliability and the dust removal system, to solve the low voltage electric valve load is too small but higher requirements for reliability problems, the tapping field dedusting system for a certain steel works is completed by the design of the power supply.  Key words power, dust extraction, high voltage, power supply  目 录 摘 要…………………………………………………………………………………I ABSTRACT…………………………………………………………………II 1 概述……………………………………………………………………………1 1.1 除尘系统的作用……………………………………………………………1 1.2 除尘系统的应用范围……………………………………………………………1 1.3 除尘系统的国内外发展状况……………………………………………………2 2 除尘系统生产工艺及要求…………………………………………………………4 2.1高炉生产工艺…………………………………………………………………4 2.2 除尘生产工艺…………………………………………………………………4 2.3 除尘系统控制要求…………………………………………………………5 3 除尘系统的供配电设计……………………………………………………………6 3.1 负荷计算………………………………………………………………………6 3.1.1除尘系统现场情况介绍……………………………………………………6 3.1.2用电设备组计算负荷的确定…………………………………………………6 3.1.3出铁场总的负荷计算……………………………………………………8 3.2 主接线方案的选择……………………………………………………………9 3.2.1主接线的设计……………………………………………………………9 3.2.2 供配电线路的接线及结构………………………………………………12 3.3 线路的选择…………………………………………………………………16 3.3.1导线和电缆选择的原则………………………