Vibration problems in high-pressure pipelines
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Chemical plants have many high-pressure pipelines; experts, please discuss the causes of vibration and how to reduce it
My personal opinion is as follows: Reason: 1. Vibration transmitted by the vibrating device. 2. The pipeline has excessive bends, causing turbulence in the fluid inside it. 3. Changes in pipeline pressure, excessive changes in pipe diameter. 4. Vaporization occurs in the liquid pipeline, resulting in a large amount of gas inside the pipe. 5. The fluid flow rate in the pipeline is too high. Measures: 1. Change the process conditions, reduce the tortuosity of the pipelines, and adjust the pressure and flow rates. 2. Install buffers. 3. Reduce vibration in the equipment. 4. Set up shock absorption devices. 5. In the case of toxic or harmful materials, it is advisable to install gas detectors to detect leaks promptly. 6. For pipelines that cannot be modified, regular inspections should be carried out to prevent leaks. 7. The most effective approach is to have professional vibration engineers assess the pipelines and propose modification plans. These are my personal opinions; any similarities are purely coincidental.
I basically agree with the opinion above. Please refer to the \"Code for Design of Pressure Piping\" at http://bbs.hcbbs.com/thread-250760-1-1.html. File name: \"Design of Pressure Piping and Engineering Examples\"; file size: 60.9MB. Access rights for the attachment: 20. There are a total of 21 files for download; file format: PDF; number of pages: 632. Publisher and publication year: Chemical Industry Press, 2007. Brief description of the content: This book provides a detailed overview of pressure piping design, including systematic theoretical knowledge on pressure piping, as well as typical design examples from large and medium-sized projects both domestically and internationally. It is also closely integrated with the latest modern engineering technologies. The book presents, in various chapters, typical diagrams of actual engineering projects, typical computer-generated 3D models, and photos of construction sites. It explains the application of modern computer technology in the design of pressure pipeline systems as well as various techniques for improving the efficiency of such design work. Additionally, it provides a systematic overview of pressure pipeline design in line with the latest domestic and international standards and specifications. The contents of this book include: basic knowledge of pressure pipelines, computer-aided software for pressure pipeline design, basic knowledge of materials, pressure pipeline components and their selection, layout of equipment and installations, pipeline arrangement, insulation and corrosion protection for pressure pipelines, and design of long-distance pipelines and utility pipelines ； Stress analysis, design and drafting of pipe supports and hangers, pressure pipeline construction and inspection, and professional management in pressure pipeline design. This book is practical in content and features up-to-date information; it can serve as a reference for technicians involved in the design of pressure pipelines, as well as for teachers and students in related fields at institutions of higher education
The second floor covered everything very thoroughly; now it’s restricted to such a short length
A few buffer tanks can be added as needed; the specific way in which they are added and the size of those tanks depends on actual requirements. We only use 0.85 times the volume, with nitrogen used for sealing – this principle should be understood.
If vibrations occur after installation, the only solution is to add more mounting brackets to reduce the vibration. The spacing should preferably not be equal.
Minimize the number of bends, as well as the length of elbows and straight sections of pipe; install more supports to reduce resonance within the pipeline itself, etc.!
Each issue should be analyzed on its own; in any case, as long as no vibrations occur after taking measures, that’s fine. The person on the second floor covered everything very thoroughly! I think it’s better to have a bracket with cushioning.
The original poster may find it helpful to refer to the following standards: SY/T 0450-2004 | Code for Seismic Design of Steel Pipelines for Oil (Gas) Transport; SH/T 3039-2003 | General Rules for Seismic Design of Above-Ground Pipelines in the Petrochemical Industry; SY/T 0450-1997 | Code for Seismic Design of Buried Steel Pipelines for Oil (Gas) Transport; GB 50470-2008 | Technical Code for Seismic Design of Oil and Gas Transmission Pipeline Projects (with explanatory notes)
SY/T 0450-2004|Code for Seismic Design of Steel Pipelines for Oil (Gas) Transportation; SH/T 3039-2003|General Rules for Seismic Design of Above-Ground Pipelines in the Petrochemical Industry; SY/T 0450-1997|Code for Seismic Design of Buried Steel Pipelines for Oil (Gas) Transportation; GB 50470-2008|Technical Code for Seismic Design of Oil and Gas Transmission Pipeline Systems (with explanatory notes). Isn’t that correct?
Actually, the common types are air hammers and water hammers; several additional restraining frames can be used, but the area where roots grow must be strong enough to bear the weight.