某双联机油滤清器构件断裂故障成因排查

Fault Cause Investigation of Fracture in A Double-Joint Oil Filter Component

针对某柴油机用双联机油滤清器壳体及盖板多次开裂、固定盖板用双头螺柱多次断裂等一系列故障,从结构设计、原材料性能、安装尺寸及安装形式等方面进行了全面排查。经过分析,确定了故障原因在于原有机油滤清器的可拆卸性设计存在不合理之处。在拆卸过程中,由于撬角受力不均匀,导致了螺柱的断裂,同时也造成了机油滤清器盖安装孔破裂以及机油滤清器壳体安装螺柱处开裂等一系列问题。为了解决这些故障,改进了盖板结构设计并提高了双头螺柱等级,从而优化了双联机油滤清器的可拆卸性,以确保柴油机可靠运行。

A series of failures,including multiple cracks in the housing and cover plate of a duplex oil filter for a diesel engine,as well as repeated breakage of the double-ended studs used to secure the cover plate,were comprehensively investigated from the aspects of structural design,raw material performance,installation dimensions,and installation methods.Through analysis,it was determined that the root cause of the failures lay in the unreasonable design of the removable components of the original oil filter.During the disas-sembly process,uneven force distribution on the prying angle led to the breakage of the studs,which in turn caused a series of issues such as cracks in the installation holes of the oil filter cover and fractures in the installation studs of the oil filter housing.To address these failures,the structural design of the cover plate was improved and the grade of the double-ended studs was upgraded,thereby op-timizing the removability of the duplex oil filter and ensuring reliable operation of the diesel engine.