In-situ observation of particles invasion behavior into the sealing interface under vibration

Zhou, Ziyi; Zhang, Kai; Zhou, Qinglong; Qin, Kun; Li, Xue; Sun, Weihao; Yuan, Tongxin

doi:10.1016/j.measurement.2023.112811

Cited by 9 publications

(2 citation statements)

References 42 publications

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“…The pressure could be the main possible explanation for the wear mechanism transformation in abrasive wear. It has also been suggested that these results will provide experimental support for further investigation of the abrasion or particle invasion of rubber seals in complex drilling environments [29]. However, the abrasive wear mechanism of rubber is a complex process that is impacted by many factors, including particle breakage rate, elastomer deformation of rubber, and the changes in actual contact pressure.…”

Section: Fracture Mechanism Of a Single Particle At The Sealing Inter...mentioning

confidence: 83%

The Particle Breakage Effect on Abrasive Wear Process of Rubber/Steel Seal Pairs under High/Low Pressure

Zhou

Qin

et al. 2023

Polymers

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Pressure has a significant effect on rubber seal performance in the abrasive environments of drilling. The micro-clastic rocks intruding into the seal interface are prone to fracture, which will change the wear process and mechanism, but this process is not yet known at present. To explore this issue, abrasive wear tests were carried out to compare the failure characteristics of the particles and the variation wear process under high/low pressures. The results show that non-round particles are prone to fracture under different pressures, resulting in different damage patterns and wear loss on the rubber surface. A single particle force model was established at the soft rubber–hard metal interface. Three typical breakage types of particles were analyzed, including ground, partially fractured, and crushed. At high load, more particles were crushed, while at low load, shear failure was more likely to occur at the edges of particles. These different particle fracture characteristics not only change the particle size, but also the state of motion and thus the subsequent friction and wear processes. Therefore, the tribological behavior and wear mechanism of abrasive wear are different at high pressure and low pressure. Higher pressure reduces the invasion of the abrasive particles, but also intensifies the tearing and wear of the rubber. However, no significant differences in damage were found for steel counterpart throughout the wear process under high/low load tests. These results are critical to understanding the abrasive wear of rubber seals in drilling engineering.

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Section: Fracture Mechanism Of a Single Particle At The Sealing Inter...mentioning

confidence: 83%

The Particle Breakage Effect on Abrasive Wear Process of Rubber/Steel Seal Pairs under High/Low Pressure

Zhou

Qin

et al. 2023

Polymers

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“…where, f, F m , n and W are the frictional coefficient of rubber seals, the horizontal force, the number of rubber seals and the load (as shown in Figure 6(a-1) and Figure 14), respectively [27][28][29]. The above formula is an critical achievement of tribological technology as it could be used to overcome a series of sealing problems in in-pipe robots (friction, wear, leakage and so forth) qualitatively.…”

Section: Effect Of Gel-breaking Forces At the In-pipe Robotsmentioning

confidence: 99%

Friction Performance of Rubber Sealing Disc Inside Pipe Robots for the Production of High-Paraffin Oil

Tan,

Luo,

et al. 2024

Lubricants

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The in-pipe robot is the most commonly used technique in offshore pipelines. The use of rubber sealing discs is important for in-pipe robots to ensure that the robots are moved by fluid pressures inside offshore pipelines. This paper focuses on the measuring and modeling of the wax–oil gel-breaking process at the soft frictional area between sealing discs and the pipe wall. In this study, a detailed characterization of the gel-scraping process and in situ probing portable microscopy are performed. Two contributions are made in this study. First, a direct observation of wax–oil deposition breaking is employed to detect the minute changes at the in-pipe robot. Second, we find that a simple function is possible to describe the relationship between the wax contents and dewaxing efficiency, in which the debris material removal ratio (DRR) is discussed. Thus, the gel deposition-breaking phenomena are quite different under the influence of rubber sealing discs. This result is further confirmed by the real contact ratio measurements. It is important to research the sealing disc further and apply it more in the petroleum industry, especially in in-pipe robots for deepwater pipeline systems.

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Failure of protection against particle invasion in hard/soft dynamic seal: Modeling and observation

Zhou,

Zhang

et al. 2024

Engineering Failure Analysis

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In-situ observation of particles invasion behavior into the sealing interface under vibration

Cited by 9 publications

References 42 publications

The Particle Breakage Effect on Abrasive Wear Process of Rubber/Steel Seal Pairs under High/Low Pressure

The Particle Breakage Effect on Abrasive Wear Process of Rubber/Steel Seal Pairs under High/Low Pressure

Friction Performance of Rubber Sealing Disc Inside Pipe Robots for the Production of High-Paraffin Oil

Failure of protection against particle invasion in hard/soft dynamic seal: Modeling and observation

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