齿啮式蒸压釜齿侧裂纹修复后剩余强度的有限元分析

发布时间：2018-01-10 01:00

本文关键词：齿啮式蒸压釜齿侧裂纹修复后剩余强度的有限元分析　出处：《装备制造技术》2017年02期 　论文类型：期刊论文

【摘要】：齿啮式蒸压釜在使用过程中,其啮合齿侧易出现裂纹等缺陷,常采用打磨修复方法。打磨量直接影响修复后齿块的剩余强度。以一台蒸压釜为例,采用有限元分析方法,对产生裂纹的啮合齿块及不同打磨程度下的啮合齿块剩余强度进行了有限元分析。由分析结果可知,在啮合齿块齿侧出现裂纹时,齿间应力值大于完好状态下齿块间应力,且随着打磨量的增加,齿间最大应力值呈增大趋势。比较不同的修复方式,以导圆角的形式进行修复齿间应力值较小,但导圆角半径应小于15 mm.
[Abstract]:In the process of using the tooth-mesh autoclave, the defects such as cracks in the meshing tooth side are easy to appear, and the grinding method is often used. The grinding amount directly affects the residual strength of the restored tooth mass. Take an autoclave as an example. The finite element analysis method is used to analyze the residual strength of the meshing tooth blocks which produce cracks and the residual strength of the meshing teeth blocks with different grinding degrees. From the results of the analysis, it can be seen that there are cracks in the tooth side of the meshing teeth blocks. The stress value between teeth is larger than that in intact condition, and the maximum stress between teeth increases with the increase of grinding amount. Compared with different restoration methods, the stress value is smaller in the form of circular angle. However, the radius of the guide angle should be less than 15 mm.
【作者单位】：杭州市特种设备检测院;东北石油大学;大庆石化公司炼油厂;
【基金】：国家质量监督检验检疫总局科技计划项目(2015QK085)
【分类号】：TH49
【正文快照】： 蒸压釜是一种典型的间歇操作设备,为了装卸产品,常设置贯通式齿啮合快开门结构[1]。对于齿啮式蒸压釜,在一定温度及压力条件下运行,其啮合齿块根部承受复杂的应力作用,在长期复杂应力以及腐蚀环境作用下将形成裂纹,导致蒸压釜密封性降低,甚至失效[2,3]。在实际的检修及维修过

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