钢管预热中频设备可控硅的正确使用及保护  

Corrective Using & Protecting of Silicon Controlled Rectifier in Intermediate Frequency Induction Heating Equipment

作　　者：冯来义[1] 罗晓梅[2] 

机构地区：[1]中铁宝桥股份有限公司,陕西宝鸡721006 [2]宝鸡石油钢管有限责任公司,陕西宝鸡721008

出　　处：《焊管》2008年第5期66-69,共4页Welded Pipe and Tube

摘　　要：在3LPE和单层环氧粉末的钢管防腐过程中,中频感应加热以其高效、节能及加热温度易于控制已经成为钢管涂敷前预热的主要手段,中频设备因此成为防腐生产线上最重要的设备之一。可控硅作为中频加热设备的主要元件,其性能直接影响到中频设备的使用效率及寿命。介绍了可控硅的正确安装方法、过流过压保护措施、逆变电路改进原理和冷却系统的正确应用,实践证明这些措施和方法可以有效地避免可控硅的损坏,降低故障率,提高生产效率。In 3LPE and FBE pipe coating process,intermediate frequency induction heating has become the major method for pre-heating of steel pipes prior to coating advantaged with its high efficiency,energy-saved and accurate temperature control.As the key part,the Silicon Controlled Rectifier(SCR)is equipped in Induction Heating Machine,its performance directly effect on efficiency and life.This article introduced the correct installation method,safeguard of over-current and over-voltage,improvement principle of inverter circuit and cooling system correct application of silicon controlled rectifier.Practice proved that these measures and methods can protect silicon controlled rectifier effectively,reduce fault time and enhance production efficiency.

关 键 词：钢管 中频感应加热 可控硅 冷却 热交换 

分 类 号：U415.525[交通运输工程—道路与铁道工程] TN86[电子电信—信息与通信工程]