Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2026 , Vol. 60 >Issue 2: 319 - 330

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2024.225

Mechanical Engineering

Numerical Simulation Analysis of a Novel Discharge Speed-Regulation Device for Detector in the Pipeline

  • TANG Jian ,
  • YU Wenxiu ,
  • ZHANG Qiuping ,
  • JIAO Xiangdong ,
  • DING Xuepeng
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  • 1 College of Information Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
    2 Inspection and Certification Co., Ltd. MCC, Beijing 100088, China

Received date: 2024-06-17

  Revised date: 2024-07-18

  Accepted date: 2024-09-09

  Online published: 2024-09-18

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Abstract

To address the issue of speed control of in-line detector in oil pipelines, a novel discharge speed-regulation device is proposed, which consists of a relief valve seat, a relief valve core, a spring, a guide rod, and other components. A mathematical model of the discharge speed-regulation device is established by analyzing the force acting on this device in a horizontal pipeline. The influence of the radians of the relief valve seat, the distance between the relief valve core and the back end of the detector, and the inlet fluid velocity on the motion state of the detector in the pipeline is studied using numerical simulation methods. The research results show that under the same boundary conditions, when the fluid passes through the detector, the differential pressure across the discharge speed-regulation device, the total head loss coefficient, and the turbulent kinetic energy of the flow field are inversely proportional to the left radian of the relief valve seat and directly proportional to the right radian. When the left radian of the relief valve seat is 60° and the right radian is 15°, all parameters reach their minimum values. An increase in the inlet fluid velocity will lead to higher pressure differences between the front and back ends of the discharge speed-regulation device, and more turbulent kinetic energy in the flow field. When the radians of the relief valve seat holds constant and the inlet fluid velocity increases from 0.6 m/s to 2 m/s, the differential pressure increases by 106 290 Pa and the turbulent kinetic energy increases by 1.831 m2/s2. The distance between the relief valve core and the back end of the detector is inversely proportional to the pressure difference between the front and back ends of the discharge speed regulation device and the speed of the detector. When the distance between the valve core and the back end of the detector increases from 15 mm to 35 mm, the pressure difference between the front and back ends of the discharge speed regulation device decreases by 240 Pa. This paper provides an important theoretical basis and practical guidance for optimizing the operational performance of in-line detectors in oil pipelines and improving detection efficiency.

Key words： oil pipeline; internal detector; discharge speed regulation device; differential pressure; speed control

Cite this article

TANG Jian , YU Wenxiu , ZHANG Qiuping , JIAO Xiangdong , DING Xuepeng . Numerical Simulation Analysis of a Novel Discharge Speed-Regulation Device for Detector in the Pipeline[J]. Journal of Shanghai Jiaotong University, 2026 , 60(2) : 319 -330 . DOI: 10.16183/j.cnki.jsjtu.2024.225

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