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水泵水润滑导轴承的耐久性主要取决于轴瓦材料的耐磨性.以常用的橡胶导轴承为例,分析了轴瓦磨损速率的影响因素及影响规律,建立了轴瓦磨损速率的计算公式.以某泵站为例,确定了导轴承橡胶轴瓦磨损速率各个影响因素的取值范围及概率密度函数,建立了基于可靠度的导轴承耐久性理论,计算了基于可靠度的水润滑橡胶导轴承的运行寿命.结果表明:水体含沙量对橡胶轴瓦磨损速率影响较大.橡胶导轴承采用清水润滑时,具有95%可靠度的运行寿命为4.2 a;而采用含沙量为0.15%的河水润滑时,具有95%可靠度的运行寿命仅为0.5 a.研究结果对合理确定水润滑导轴承的润滑介质和检修周期,提高其可靠耐久性具有重要意义.
The durability of pump-water-lubricated guide bearing depends mainly on the wear resistance of the bearing.Based on the commonly used rubber-guided bearing, the influencing factors and influencing laws of the bearing wear rate are analyzed and the formula for calculating the wear rate of bearing bush is established. Pump station as an example, the range of values and probability density function of each factor affecting the wear rate of the rubber bush of the guide bearing were established, and the reliability of the guide bearing durability theory was established, and the reliability of the water lubricated rubber bearing was calculated The results show that the sediment concentration of water has a great influence on the wear rate of rubber bushs.When the rubber bearing is lubricated with clean water, the service life of 95% reliability is 4.2 a, while when the water content is 0.15% , And the service life with 95% reliability is only 0.5 a. The research results are of great importance to the reasonable determination of lubricating medium and inspection cycle of water-lubricated guide bearings and their reliability and durability.