How should the straight section of the trachea be led out from above or connected to the main pipe?
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The petroleum pipeline design manual states that the straight sections of the gas pipe should lead out from or into the main pipe from above; however, to prevent impurities from entering the equipment, pumps, and control instruments, it is advisable for such straight sections to lead out from or into the main pipe from the side or above. Why introduce or converge from above.
Haven’t you already explained it yourself? Prevent impurities or water from entering the branch pipe (main pipe)
Well, you explained it yourself. It is to prevent impurities from entering the equipment, pumps, and automatic control instruments – can’t you understand that?
The branch pipes of gas pipelines should lead out from above or merge into the main pipe, in order to prevent impurities (including liquids) from entering or exiting. In applications where steam is involved, it is common to have the steam branch pipes lead out from above the main pipe, so as to avoid condensate from entering those branches. Similarly, the air exhaust branch pipes are installed at a 45-degree angle above the direction of flow in the main pipe; this is also done to prevent impurities from the branch pipes from reaching the main pipe, and the 45-degree angle helps to reduce backpressure of the gas.
Reply to 4# yuzhilicn: Thank you for your answer. What does “gas pushing back” mean?
Also, gas will only rise; if a straight pipe is connected from below, there will be no airflow. Does this situation occur?
Also, gas will only rise; if a straight pipe is connected from below, there will be no airflow. Does this situation occur?