In a DN600 circulating water pipeline, are the flow velocities uniform across the cross-section? What is the working principle of an insert-type vortex flow meter?
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Dear teachers, in the DN600 circulating water pipeline, is the flow velocity the same across the entire cross-section? What is the working principle of an insert-type vortex street sensor? Does the length of the insert-type vortex street inserted into the pipe affect the measurement results?
The topic is a bit broad – for a 600-mm circulating water pipeline, in the case of a stable fluid with the pipe completely filled, the flow velocity at each cross-section would be the same under ideal conditions； Insertion-type vortex street – aren’t all vortex streets of this type inserted? The vortex generator is definitely located inside the pipe, while the probe is usually placed on the outer wall to measure the frequency of the vortices ； It generally does not affect the measurement results. Even with pipes of this size, care must be taken to avoid bubble formation when using any type of flow meter; electromagnetic, ultrasonic, and vortex flow meters are all prone to being disrupted by bubbles
Hey, what’s the point of asking that? I ask you in return: is the pressure in the pipes everywhere the same?
. The flow velocity of the medium at different sections of the pipe varies; it is faster in the middle and slower as one moves closer to the pipe wall； Insertion-type vortex flow meters have compensation methods for different flow speeds (designed by the manufacturer). However, it must be inserted along the pipe diameter during installation, with the insertion depth meeting the product requirements. ↓Pipe flow velocity distribution ↓Vortex street formation: ↓Kármán vortex streets that form in clouds as air flows over a mountain ↓Flow equation for vortex street flow meters.
Does a pipe of this size require an emergency shut-off valve? The type that can be opened and closed in 1 second without causing water hammer~