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Seal performance analysis of fracturing pump V-shaped combination plunger based on fluid pressure penetration
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Mingbo ZHAO1, Yongjun HOU1, Ruihuan TANG2, Huachuan LI3, Youping LIU3
Journal of Mechanical Strength | 2025, 47(4) : 87 - 95
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Journal of Mechanical Strength | 2025, 47(4): 87-95
• ·Fatigue·Damage·Fracture·Failure Analysis· •
Seal performance analysis of fracturing pump V-shaped combination plunger based on fluid pressure penetration
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Mingbo ZHAO1, Yongjun HOU1, Ruihuan TANG2, Huachuan LI3, Youping LIU3
Affiliations
  • 1.School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China
  • 2.Equipment Department, Chuanqing Drilling Engineering Co., Ltd., Chengdu 610051, China
  • 3.BOMCO Sichuan Special Vehicle Co., Ltd., Guanghan 618300, China
Published: 2025-04-15 doi: 10.16579/j.issn.1001.9669.2025.04.011
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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.

V-shaped sealing ring  /  Interference assembly  /  Fluid pressure penetration  /  Structural design  /  Sealing performance
Mingbo ZHAO, Yongjun HOU, Ruihuan TANG, Huachuan LI, Youping LIU. 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
Funding
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  • Sichuan Science and Technology Programme Project(2020YFG0260)
  • Major Science and Technology Project of China National Petroleum Corporation(2019F-30)
Appendix
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Year 2025 volume 47 Issue 4
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58
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.04.011
  • Receive Date：2023-08-09
  • Online Date：2026-03-20
  • Published：2025-04-15
Article Data
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History
  • Received：2023-08-09
  • Revised：2023-09-19
Funding
Sichuan Science and Technology Programme Project(2020YFG0260)
Major Science and Technology Project of China National Petroleum Corporation(2019F-30)
Affiliations
    1.School of Mechanical and Electrical Engineering, Southwest Petroleum University, Chengdu 610500, China
    2.Equipment Department, Chuanqing Drilling Engineering Co., Ltd., Chengdu 610051, China
    3.BOMCO Sichuan Special Vehicle Co., Ltd., Guanghan 618300, China

Corresponding:

HOU Yongjun, E-mail：
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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