bonnet

The cracking cause and repair procedure at pump bonnet are discussed in the paper.

阐述了炼油厂焦化车间新180泵头盖裂纹的成因以及制定合理修复方案和工艺的过程。

The optimal point was derived and the approximate calculating formula of the maximum stress at this optimal relation was presented, which provide the basis of the application of this new type front mask of closure.

针对快开盲板的一种新型的变厚度头盖 ,运用有限元应力分析寻求出最大应力点 ,并对其关键尺寸DN和R的关系进行优化 ,得出其R与DN的最佳关系点 ,得出这一最优关系下的最大应力近似计算关系 ,为这一新型盲板头盖的应用打下基础。

The basic principle is introduced for the self-developed cobbra opening and closing device for high speed EMUs .

介绍了自主开发的高速动车组车头盖开闭装置的基本原理,详细阐述了主要部件结构,该装置具有手动及电动功能,它的成功开发大大方便和改善了动车组与其他机车的联挂。