In the process of ensuring the stable operation of large steam turbines, the reliability of the jacking oil pump filter element DQ600KW25H10S is crucial. When encountering the problem of premature failure of the jacking oil pump filter element DQ600KW25H10S, in-depth fault analysis is the key to solving this problem. This process aims to accurately distinguish the root cause of the failure, whether it is a defect in the filter element itself, an omission in the installation link, or other complex factors in the system.

First, start with the intuitive and carefully inspect the appearance. Observe whether the filter element is damaged, deformed or cracked in the material, which directly points to problems with the filter element material or manufacturing process. At the same time, review the pressure difference record during the use of the filter element. The abnormal pressure difference rising trend often indicates that the filter element is blocked or close to the end of its design life. The physical and chemical analysis of the oil sample cannot be ignored. By testing indicators such as particle contamination, acid value and moisture content, the impact of oil quality on the state of the filter element is evaluated.

Then, the installation details of the filter element DQ600KW25H10S are analyzed in depth. Check whether the installation is strictly in accordance with the specifications, including the integrity of the seal ring, the correct use of fasteners, and the installation direction of the filter element. Any improper installation may become a potential cause of filter element failure. At the same time, confirm the match between the filter element specifications and system requirements. Inappropriate filter element selection will accelerate wear or reduce filtration efficiency.

System factors are equally important. Evaluate the cleanliness of the system in detail, because contaminants from inside and outside the system (such as wear particles, external dust) will quickly increase the burden on the filter element. Investigate whether the system is operating under extreme conditions. Over-temperature or over-pressure operation may exceed the design tolerance of the filter element and accelerate its aging process. In addition, review the system’s maintenance records to understand the filter element replacement cycle, oil change frequency, and system cleaning routine practices, which are crucial to determine whether the system is properly maintained.

For further verification, a performance comparison test can be performed on the failed filter element and the new filter element, including differential pressure and flow tests, to directly compare their performance differences. In some cases, tests that simulate actual operating conditions can also provide valuable data to help confirm the problem of filter element compatibility with the system.

Combine all the collected information, conduct a comprehensive analysis, and check the possible causes one by one. For example, if the filter element has no obvious damage on the outside, but the pressure difference is abnormal and the oil is seriously contaminated, then the system cleanliness may be the primary problem; if the filter element is damaged and the installation record is correct, the quality problem of the filter element itself will surface.

Finally, based on the above analysis results, formulate targeted improvement measures, such as improving system cleanliness, adjusting operating conditions, optimizing filter element selection or strengthening installation quality control, in order to fundamentally prevent the recurrence of similar faults. Through this series of scientific and rigorous fault analysis processes, not only can the current problem be solved, but also valuable experience and strategies can be provided for subsequent equipment maintenance.
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