Pipe necking problem
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Natural gas metering station: The process pipelines are DN168. Question: When choosing a vortex flowmeter, which is more suitable – a model with a diameter of DN80 or DN100? The flow rate range for both caliber sizes can be met. Is there a rule stating that the reduction in diameter should not be less than half of the pipe’s diameter? This post was last edited by yangq4725 on 2009-3-11 15:14.]
Although both data usage levels fall within the acceptable range, there is a difference between them. It’s important to determine what the data usage is during normal use; it’s best to choose a data usage level that lies between 40% and 70% of the normal usage level.
Consider the flow velocity of natural gas at the two pipe diameters; it should not be too high. It would be best to consult the process engineers to find out what the safe flow velocity for natural gas is, and then make a decision based on that.