Regarding the drain pipes for high-voltage equipment
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For the drainage pipe of high-pressure equipment, a section of pipe is first connected, then the diameter is reduced using a concentric reducer, and subsequently two high-pressure valves are installed for drainage. Why isn’t a pipe with a smaller diameter connected directly, along with those two high-pressure valves, for drainage?
I think it’s related to flow rate. If one switches to smaller-diameter branches, the flow rate cannot be maintained. When going from a larger diameter to a smaller one, the flow rate doesn’t decrease; instead, the flow velocity increases. It’s a matter of design
First, understand Bernoulli’s equation: when pressure remains constant, a smaller pipe diameter results in a lower flow rate, which makes it easier to control the liquid level; meanwhile, changes in pipe diameter affect the resistance coefficient……