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一、问题的提出随着工业技术的发展,大型球罐的使用日趋增多。由于球罐体积大,单位容积耗材少,在生产中发挥了重要作用。但是球罐亦存在焊缝多,且只能在现场组装焊接的特点,因此质量不容易控制。我国自60年代开始建造球罐,设计、制造、安装的经验较少,管理比较混乱,最近几年先后出现几次较大的爆炸事故。针对球罐出现较多事故的情况,有关部门狠抓了在用球罐的开罐检查,从开罐情况来看,几乎所有的球罐都出现
First, the question raised With the development of industrial technology, the use of large-scale spherical tank is increasing. Due to the large volume of the spherical tank, the unit volume of less consumables, played an important role in the production. However, there are also many spherical tank weld, and can only be assembled in the field of welding characteristics, so the quality is not easy to control. Since the construction of the spherical tank in the 60s in our country, our country has less experience in design, manufacture and installation. Its management is rather chaotic. In recent years, several major explosions have occurred. More accidents for the spherical tank case, the relevant departments pay close attention to the tank with a canister inspection, from the tank situation, almost all of the tank appeared