关键词: 潜水电泵；可靠性；失效分析；强化试验

Abstract:

In order to expose the weak point of reliability in a short period of time for submersible pumps, and realize its reliability growth, through analyzing the failure mechanism of submersible pumps, found out that excessive attrition of the mechanical seal surface is the main reasons of submersible pumps failure. Working media with abrasive was adopted as the accelerated factor of reliability enhancement testing, on the principle of keeping the failure mechanism unchanged, finally emery-containing water was selected as enhancement stress, where the emery’s granularity was 100 meshes. According to the failure characteristics and working conditions, a test plan of submersible pumps was proposed. Test results show that the test plan can achieve the purpose of submersible pump enhancement testing.

Key words: submersible pump, reliability, failure analysis;enhancement testing