Experimental Research on the Frictional Resistance of Fluid-Driven Pipeline Robot with Small Size in Gas Pipeline

Zhu, Xiaomin; Wei, Wang; Zhang, Shimin; Liu, Shuhai

doi:10.1007/s11249-017-0830-z

Cited by 25 publications

(16 citation statements)

References 28 publications

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“…The schematic diagram of the experimental platform, as shown in Figure 3 (Zhu et al, 2017), consists of pipeline, slip, universal joint, load cell, sliding table, speed control unit and data acquisition system. To provide enough drag force and constant velocity, the ball screw was used in this platform.…”

Section: Experiments Platformmentioning

confidence: 99%

Experimental research on frictional resistance of smart isolation tool during maintenance operation in offshore pipeline

Kang

Zhu

Zhang

et al. 2018

ILT

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Purpose Pipeline maintenance technology using smart isolation tool is becoming more widely used in the global scope. This paper aims to investigate the effects of parameters on the frictional resistance between the slip and pipeline and the frictional characteristics under different lubrication films. Design/methodology/approach An experimental platform consisting of slip, pipeline and data acquisition system was developed, wherein the slip slips on the pipeline under different normal forces and velocities. In addition, three lubrication conditions, namely, dry wall, oil liquid and black powder on the wall, were investigated to study the effects of lubrications on the frictional coefficient and characteristics. Findings Research results indicate that the frictional force and coefficient were sensitive to normal force. The crude oil affected the frictional coefficient within a certain range of normal force, and the black powder enhanced the surface roughness in the natural gas pipeline. However, velocity had no effect on them. In addition, different contact behaviors could be observed from the frictional coefficient curves. Originality/value In this paper, the effects of normal force and velocity on frictional resistance of sliding slip during decelerating process in pipeline were investigated, and the effects of lubrication films on frictional characteristics were also revealed. The research results are of great value to improve the prediction accuracy of smart isolation tool, and also provide a guiding significance for the development of maintenance operation in pipelines.

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Section: Experiments Platformmentioning

confidence: 99%

Experimental research on frictional resistance of smart isolation tool during maintenance operation in offshore pipeline

Kang

Zhu

Zhang

et al. 2018

ILT

Self Cite

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“…With the presence of bypass fraction, the PIG speed reduced significantly and at the same time alleviated the movement fluctuation of the PIG. Moreover, Hendrix [11], Zhu et al, [21] and Chen et al, [22] also conducted experimental studies on bypass PIG to measure PIG speed and friction forces.…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristics of Disk Bypass Pipeline Inspection Gauge (PIG) in Natural Gas Pipelines using Computational Fluid Dynamics

Rabby

Masuri

Kamal³

et al. 2021

CFDL

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Disk bypass pipeline inspection gauge (PIG) is considered as an efficient device for pigging operations including cleaning, maintaining and inspecting pipelines. The PIG performance is influenced by the fluid flow characteristics as PIG moves forward due to differential pressure of fluid around the PIG. This study focuses on flow characterization of fluid around disk bypass PIG for natural gases pipelines including methane, ethane, and butane using computational fluid dynamics approach. The control volume method with steady state Turbulent k-? model was applied for simulation purposes using ANSYS Fluent 19 software. Fluid velocities at different sections around PIG and differential pressure were investigated for various bypass opening percentages. The results showed that by increasing bypass opening percentages from 5% to 15%, fluid velocity at bypass opening section has reduced 28.28%, 40.43%, and 21.21% for ethane, butane, and methane, respectively, while differential pressure reduced 88%, 86% and 89%. This indicated that 15% bypass opening percentage provided the best flow characteristics among all cases considered. At 15% bypass opening percentage, methane resulted in the lowest fluid velocity at bypass opening section and lowest differential pressure compared to others. Additionally, a correlation of differential pressure of these gases as a function of bypass opening percentage and other parameters was also developed for first time. All results are important for design selection of PIG parameters for efficient pigging operation.

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“…Recently, pipelines, being widely applied in many fields, are the safest, environmentally friendly, energy-efficient, and economic way to transport goods or material, such as gas, oil and water etc. [1][2][3]. However, with the long-term transportation, corrosion of transported medium and environmental effects, there will be sediment and it is possible to block the pipe when the sediment accumulates to a certain level in the time, causing accidents and heavy loss [4].…”

Section: Introductionmentioning

confidence: 99%

Development of a Wheeled and Wall-pressing Type In-pipe Robot for Water Pipelines Cleaning and Its Traveling Capability

Feng

Zhang

et al. 2020

mech

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Most of existing in-pipe robots are applied to de-fect inspection and regular maintenance, etc. There is al-most no in-pipe robot for big-diameter pipelines cleaningand are still problems of traction force and obstacle-overcoming. To deal with the problems, a novel wheeledand wall-pressing type in-pipe cleaning robot (IPCR) withhigh pressure water jet is proposed. Then the preloadmechanism, traction force, and obstacle-overcoming capa-bility of the IPCR are analyzed. The vibration equations ofthe simplified vibration system of the IPCR are established.Also, the necessity of preloading force is verified andmethods to improve obstacle-overcoming capability areproposed. Finally, the traveling capability is verified in adynamics simulation system. The simulation results showthat the proposed IPCR is powerful with traction force andhas a certain capability of obstacle-overcoming. Setting theattitude angle is zero and adding preloading force to allsprings can obviously weaken vibration of the IPCR.

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Experimental Research on the Frictional Resistance of Fluid-Driven Pipeline Robot with Small Size in Gas Pipeline

Cited by 25 publications

References 28 publications

Experimental research on frictional resistance of smart isolation tool during maintenance operation in offshore pipeline

Experimental research on frictional resistance of smart isolation tool during maintenance operation in offshore pipeline

Flow Characteristics of Disk Bypass Pipeline Inspection Gauge (PIG) in Natural Gas Pipelines using Computational Fluid Dynamics

Development of a Wheeled and Wall-pressing Type In-pipe Robot for Water Pipelines Cleaning and Its Traveling Capability

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