What is the purpose of the throttling device on the pipeline?
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As shown in the diagram, what is the function of the throttling device (orifice plate) on the pipeline? I don’t know why it’s set like this? Please ask an expert to explain; it will earn extra points
Isn’t it for measuring traffic? Differential pressure flow meters require a throttling device.
Judging from this diagram, it seems to be a orifice plate flow meter
Orifice plate flow meters are inherently differential pressure type
The measuring elements of differential pressure flow measurement devices are collectively referred to as throttling devices. A throttling element is installed in the pipeline to create a differential pressure, and the flow rate is measured indirectly through the relationship between this differential pressure and the flow rate. Throttling elements include orifice plates, nozzles, Venturi tubes, etc.
This tube appears to be 50 in diameter. The throttling device is a orifice plate, whose central aperture is much smaller than 50; due to its small size, it allows the maximum flow rate to remain below a certain set value, thereby ensuring a minimum flow rate. Why not use pipes with a smaller diameter? Because if the diameter of the entire pipe is small, the resistance throughout the pipeline becomes too high, which hinders transportation; reducing the diameter at only certain points can achieve the purpose of flow control, while keeping the resistance in the entire pipeline low
Used to limit the maximum flow rate