Multiple fracture accidents occurred in pressure cap of a high-pressure water injection pump packing box in Zhongyuan oilfield,which brings significant safety risk and hidden danger to production safety.Actions were taken by analyzing the basic sit-uation on site,chemical composition of the pressure cap,hardness,metallographic structure,macroscopic and microscopic mor-phology of the fracture surface.The findings indicated that the first reason for the fracture of pressure cap is due to loose casting material and the presence of defects,the second reason is that the high pressure fluctuation of water injection pump plays a cruci-al destructive role on accelerating the process of fracture.It was proved that the fractures were caused by the combined action of poor material quality factor and mechanical factor.
关键词
高压注水泵盘根盒压帽/断裂/材质因素/力学因素
Key words
pressure cap of high-pressure water injection pump packing box/fracture/material quality factor/mechanical factor
维普
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