Do air compressors and the compressed air pipelines connected to their outlets fall under the category of pressure vessels and pressure pipelines?
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This post was last edited by hopelu on 2020-10-14 at 12:37. Hello everyone. Parameters of the air compressor: 37KW, 6.5 m3/min; the working medium is atmospheric air, the outlet pressure is 0.8 MPa, and the outlet pipe has a diameter of DN80. Question: Does the air compressor fall under the category of pressure vessels? And does the DN80 pipe qualify as a pressure pipeline? Thank you! Would it be considered a pressure pipeline if DN50 pipes are used instead? Also, should the compressed air pipelines be made of carbon steel seamless pipes or welded pipes? Are there any specific requirements regarding connection elbows, wall thickness, and valves? Is it necessary to install a drain pipe (for use during start-up and shutdown), and what should be its diameter? Please indicate the specifications or standards corresponding to the judgment result. Thank you!
A 37kw unit should not have an oil and gas tank; if it does, then it is a pressure vessel. Based on its volume, it would be considered a simple pressure vessel, and no registration certificate for use is required. Pipes with a diameter of 80 definitely fall under the category of pressure pipes; they require a registration certificate for use and must undergo annual inspections. Refer to the special equipment catalog.
This post was last edited by hopelu on 2020-10-14 at 13:16. Please share more ideas. Thank you!
Pressure pipelines refer to tubular devices that use a certain pressure to transport gases or liquids. They are defined as those with a maximum operating pressure of 0.1 MPa (gauge pressure) or more, where the medium is a gas, liquefied gas, steam, or a liquid that is flammable, explosive, toxic, corrosive, and has a maximum operating temperature equal to or higher than its standard boiling point; furthermore, such pipelines have a nominal diameter of 50 mm or more. Except for pipes with a nominal diameter of less than 150 mm and a maximum operating pressure of less than 1.6 MPa (gauge pressure), as well as the pipes that form part of the equipment used for transporting non-toxic, non-flammable, and non-corrosive gases. Among them, the safety supervision and management of oil and gas pipelines shall also be carried out in accordance with laws and regulations such as the Work Safety Law and the Oil and Gas Pipeline Protection Law. Excerpt from the Announcement on the Catalogue of Special Equipment (No. 114, 2014)
This post was last edited by hopelu on 2020-10-14 at 13:18. If you have any photos of the air compressor on site, please provide them. Thank you!
This post was last edited by hopelu on 2020-10-14 at 13:17. Urgent, really urgent! ! !
The medium is natural air, the outlet pressure is 0.8 MPa, and the outlet pipe has a diameter of DN80; it does not fall under the category of pressure pipes. For compressed air pipes, either carbon steel seamless pipes or welded pipes can be used.