ZHAO Mingbo,HOU Yongjun,TANG Ruihuan,et al. Seal performance analysis of fracturing pump V-shaped combination plunger based on fluid pressure penetration[J]. Journal of Mechanical Strength,2025,47(4):87-95.
ZHAO Mingbo,HOU Yongjun,TANG Ruihuan,et al. Seal performance analysis of fracturing pump V-shaped combination plunger based on fluid pressure penetration[J]. Journal of Mechanical Strength,2025,47(4):87-95. DOI: 10.16579/j.issn.1001.9669.2025.04.011.
SEAL PERFORMANCE ANALYSIS OF FRACTURING PUMP V-SHAPED COMBINATION PLUNGER BASED ON FLUID PRESSURE PENETRATION
The fracturing pump plunger seal pair is one of the components most prone to failure at the hydraulic end of the fracturing pump due to its long-term operation under variable load,reciprocal friction and high pressure
and acidic fracturing fluid. To study the influence of interference magnitude
medium pressure
etc.on the sealing performance of V-shaped sealing ring
the assembly process of V-shaped sealing ring was simulated by using automatic shrinkage fit
the actual fluid pressure action condition of the V-shaped sealing ring was simulated based on fluid pressure penetration
and the finite element model of V-shaped sealing ring was established. Under quasi-static and dynamic sealing
the maximum Mises stress and the variation law of contact pressure of the V-shaped sealing ring were analyzed. A two-stage differential pressure plunger seal structure was proposed
and the sealing performance analysis of the structure was carried out.The results show that the maximum contact pressure of the seals all appear in the V-shaped sealing ring near the high-pressure fluid side
and the maximum stress is mainly in the lip and shoulder of the V-shaped sealing ring in contact with the support ring and press ring
the V-shaped sealing ring is more likely to fail on the side in contact with the plunger. The use of two-stage differential pressure plunger seal can effectively reduce the Mises stress
shear stress
and friction between the V-shaped sealing ring and the plunger
which can extend the working life of the fracturing pump plunger seal and improve the reliability and economy of the fracturing operation.
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