Design of the Speed Regulating PIG with Butterfly Bypass-Valve

Tan, Gui Bin; Zhang, Shi Min; Zhu, Xiao Xiao

doi:10.4028/www.scientific.net/amr.201-203.429

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…The pipeline robot can keep the speed unchanged during operation, and has no damage to the pipe wall during operation. Tan et al [22], designed a speed regulating PIG robot based on butterfly bypass valve, as shown in Figure 7. It consists of PIG main body, control unit, execution unit and speed acquisition unit.…”

Section: Pig Robotmentioning

confidence: 99%

Research Status and Development Trend of Oil and Gas Pipeline Robot

Song¹,

Luo²

2022

AJST

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The oil and gas pipeline will have defects such as wear, cracks, corrosion, aging and mechanical damage in the working process, which need to be detected and repaired in time. At present, there are various types of robots in the field of pipeline inspection, including wheeled robots, tracked robots, PIG robots, screw driven robots, walking robots, and inchworm robots. In this paper, the specifications, design and performance of different types of in pipe inspection robots are reviewed. Finally, a summary and prospect are made to provide a theoretical basis for the design and research of robots in this field.

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Section: Pig Robotmentioning

confidence: 99%

Research Status and Development Trend of Oil and Gas Pipeline Robot

Song¹,

Luo²

2022

AJST

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“…e dynamics of a pig with a fixed bypass in the gas pipeline was studied by Hosseinalipour et al In this research, the basic equations of gas flow were discretized by the finite difference method [12]. Tan et al studied a new butterfly-shaped bypass valve and presented its working principle [13]. Lesani et al explored the derivation and solution of two-and three-dimensional (2D and 3D, respectively) dynamic equations for the pig passing through the liquid pipeline [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of Pigging for a Gas Pipeline Using a Bypass Pig

Zhang

Zhou

2020

Mathematical Problems in Engineering

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The pipeline inspection gauge (PIG, lowercase pig is commonly used) with a bypass valve is widely used in pipeline inspection because it operates at a low speed without reducing the flow rate. Understanding the dynamics of a bypass pig in a gas pipeline would contribute to the design of the pig and the control of pig speed. This paper deals with the dynamic model for the process of a bypass pig travelling through a hilly gas pipeline. The method of characteristics (MOC) is used to solve the equations of unsteady gas flow. The backward flow of the gas in the bypass valve and pipe is shown by a simulation of pigging for a hilly gas pipeline. Parametric sensitivity analysis of pigging in the horizontal gas pipe using a bypass pig is then carried out. The results indicate that the speed of a bypass pig is most sensitive to the gas speed in the pipe followed by the bypass area and the friction of the pig. A formula, obtained from the results of the simulations using response surface methodology (RSM), is presented to predict the steady speed of a bypass pig in the horizontal gas pipeline.

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“…To understand the dynamic behavior of the pig, the pig dynamic equation must be solved together with the governing equations of flows [2,16]. The method of characteristics (MOC) was employed to transform the partial differential equations of flows to ordinary differential equations.…”

Section: Introductionmentioning

confidence: 99%

Speed Simulation of Pig Restarting from Stoppage in Gas Pipeline

Zheng

2019

Mathematical Problems in Engineering

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Pigging is a common operation in the oil and gas industry. Because of the compressibility of the gas, starting up a pipeline inspection gauge (pig) from a stoppage can generate a very high speed of the pig, which is dangerous to the pipe and the pig itself. Understanding the maximum speed a pig achieves in the restarting process would contribute to pig design and safe pigging. This paper presents the modeling of a pig restarting from a stoppage in gas pipeline. In the model, the transient equations of gas flow are solved by method of characteristics (MOC). Runge-Kutta method is used for solving the pig speed equation. The process of a pig restarting from a stoppage in a horizontal gas pipe is simulated. The results indicate that the maximum speed a pig achieves from a stoppage is primarily determined by the pressure of the pipe and the pressure change caused by the obstructions. Furthermore, response surface methodology (RSM) is used to study the maximum speed of pig. An empirical formula is present to predict the maximum speed of a pig restarting from a stoppage in gas pipeline.

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Design of the Speed Regulating PIG with Butterfly Bypass-Valve

Cited by 9 publications

References 7 publications

Research Status and Development Trend of Oil and Gas Pipeline Robot

Research Status and Development Trend of Oil and Gas Pipeline Robot

Modeling and Simulation of Pigging for a Gas Pipeline Using a Bypass Pig

Speed Simulation of Pig Restarting from Stoppage in Gas Pipeline

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