Development of trenchless technology of reconstruction of «pulling pig P» pipeline communications
DOI:
https://doi.org/10.15587/1729-4061.2019.164351Keywords:
pressure loss, volume flow, friction force, traction force, pulling speedAbstract
The technology of trenchless reconstruction of pipeline communications has been developed by pulling a new polyethylene pipeline into a worn-out steel traction by the pig. The pig moves under the pressure of air supplied into the trans-pig space by the compressor.
Mathematical and CFD modeling of the process of pulling the pipeline by a pig is performed. Formulas for calculating the resistance forces acting on the moving system, the pressure at the compressor outlet, at which the pig will extend a new polyethylene pipeline with the entire length of the reconstructed worn steel pipeline, are derived. The resistance forces acting on the moving system on horizontal sections of the route are: the force of mechanical friction of the pig cuffs against the walls of the steel pipeline; friction force of polyethylene pipe to steel; friction force of the polyethylene pipe in the ring cuffs of the sealing system.
The results of CFD simulations are visualized in the postprocessor of the Ansys Fluent software package by drawing flow lines, speed vectors, pressure fields on the contours and in the longitudinal section of the annular and rotary space. The exact values of speed, pressure at various points of the annular and rotary space are determined. The structure of the air flow in the trans-pig and annular space is investigated. Places slowing down and accelerating the flow of air, falling and rising pressure are identified. The pressure losses in the annular space are determined.
After performing experimental tests, it is found that the developed «Pulling pigP» technology can be used for the reconstruction of pipeline communications. According to the results of experimental measurements, graphs of changes in air pressure at the beginning of the pipeline in time are constructed when the pulling a polyethylene pipe into worn-out steel by the pig. The pressure at the beginning of the pipeline before the start of pulling increases, due to the force of static friction. After the start of pulling, the pressure decreases by a small amount, and during pulling, its slight increase occurs. The graphs of dependence of the pulling speed on the air volume flow and on the length of the pulled section of the polyethylene pipe are constructed. At the initial stage, the pulling speed increases dramatically and after such growth stabilizesReferences
- Yazdekhasti, S., Piratla, K., Khan, A., Atamturktur, S. (2014). Analysis of factors influencing the selection of water main rehabilitation methods. NASTT’s 2014 No-Dig Show. Orlando.
- Suleiman, M., Stevens, L., Jahren, C., Ceylan, H., Conway, W. (2010). Identification of practices, design, construction, and repair using trenchless technology. InTrans project reports.
- Liu, J., Kramer, S., Provencio, G. (2018). Advantages and disadvantages of trenchless construction approach as compared to the traditional open cut installation of underground utility systems. Creative Construction Conference 2018 – Proceedings. doi: https://doi.org/10.3311/ccc2018-018
- Mallakis, G. (2016). Large diameter pipe bursting. Large pressure pipe structural rehabilitation conference. Los Angeles.
- Marti, T., Botteicher, R. (2014). Thermally fused PVC pipe helps accelerate adoption of trenchless pipe installation techniques in North America. Proceedings of the 17th plastic pipes conference. Chicago.
- Wróbel, G., Pusz, A., Szymiczek, M., Michalik, K. (2009). Swagelining as a method of trenchless pipelines rehabilitation. Journal of Achievements in Materials and Manufacturing Engineering, 33 (1), 27–34.
- Matthews, J., Sinha, S., Sterling, R. (2014). State of technology for rehabilitation of water distribution systems. Technical Report, U.S. Environmental Protection Agency (USA), CreateSpace Independent Publishing Platform. Washington, 214.
- Polat, S. (2013). Trenchless rehabilitation of pressurized pipes using the Primus Line® system. The prime solution of pipes, Rädlinger primusline GmbH, Cham, 42.
- Johnson, B., Grissom, C. (2018). Best practices to manage odors during cured-in-place pipe lining. Kentucky-Tennessee Water Professionals Conference 2018. Nashville, 29–34.
- Wellstream flexsteel™ flexible steel pipe (2016). Technical, operating, and maintenance manual, Wellstream International Limited, USA, 69.
- Weller, B. (2018). Spoolable сomposite pipelines. Cost-Effective Well Site Facilities. Houston, 33.
- Saeidbakhsh, M., Rafeeyan, M., Ziaei-Rad, S. (2009). Dynamic Analysis of Small Pigs in Space Pipelines. Oil & Gas Science and Technology – Revue de l'IFP, 64 (2), 155–164. doi: https://doi.org/10.2516/ogst:2008046
- Tolmasquim, S. T., Nieckele, A. O. (2008). Design and control of pig operations through pipelines. Journal of Petroleum Science and Engineering, 62 (3-4), 102–110. doi: https://doi.org/10.1016/j.petrol.2008.07.002
- Hrudz, V. Ya., Bakaiev, V. V., Hrudz, Ya. V., Rozen, H. (2009). Matematychne modeliuvannia protsesu rukhu intelektualnoho porshnia po hazoprovodu. Naftova i hazova promyslovist, 1, 46–47.
- Hrudz, V. Ya., Bakaiev, V. V., Hrudz, Ya. V., Rozen, H. (2001). Rehuliuvannia rukhu intelektualnoho porshnia zminoiu tekhnolohichnoi skhemy liniynoi dilianky. Naftova i hazova promyslovist, 1, 44–45.
- Squires, K. D., Eaton, J. K. (1990). Particle response and turbulence modification in isotropic turbulence. Physics of Fluids A: Fluid Dynamics, 2 (7), 1191–1203. doi: https://doi.org/10.1063/1.857620
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Copyright (c) 2019 Yaroslav Doroshenko, Vasyl Zapukhliak, Kostiantyn Poliarush, Roman Stasiuk, Sergiy Bagriy
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