双管板换热器内管板液压胀接压力的探讨

由于双管板换热器结构的特殊性,内管板的胀接是一个难点,胀接压力的大小直接关系到双管板换热器的可靠性,因此选取合适的胀接压力是关键。运用ANSYS软件对双管板换热器的内管板进行液压胀接模拟,并采用优化设计方法,对胀接压力进行了优化,获得了最佳的液压胀接压力,并通过试验验证了模拟的合理性,为双管板换热器内管板胀接工艺提供参考。

双管板蒸汽加热器的制造

蒸汽加热器在冶金及化工行业用的空分设备中被广泛采用.但是, 传统的蒸汽加热器存在较多问题.基于此, 本文制造了一款双管板蒸汽加热器, 主要叙述空分流程中使用的双管板蒸汽加热器的基本结构和在制造过程中的控制要点及检验方法.

双管板不锈钢焊管蒸汽加热制造

本文对双管板不锈钢焊管蒸汽加热器主要工序的制造进行介绍。由于这样的蒸汽加热器还是第一次制造,我们通过对试件进行胀接、焊接工艺评定。并将试验结果与理论计算和实际生产联系起来,进行比较,积累经验,为以后类似产品的设计、制造提供参考。

Bilateral traumatic proximal humerus fractures managed by open reduction and internal fixation with locked plates

Fractures of the proximal humerus are uncommon in young patients.Although bilateral fracture of proximal humerus itself is rare,association with epilepsy and electrocution is frequent.Only one case of traumatic bilateral proximal humerus fracture has been reported in the literature.We report a rare case of bilateral traumatic displaced proximal humerus fractures in a 40 years old male patient,which was treated by means of open reduction and internal fixation with proximal humerus locked pates on both sides and obtained a good functional outcome.