I would like to ask why the two sides of a orifice plate flow meter are designed with sharp angles and obtuse angles – what is the purpose of this?
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I’m not in the instrumentation field; I just don’t understand how this orifice plate structure works
There is an issue regarding the flow direction when installing orifice plate flow meters. When installing the orifice plate, the sharp-end side must face the direction of the flowing medium, while the blunt-end side should face downstream; it must not be installed in reverse. This problem does not exist in two-way metering orifice plate flowmeters.
It is to increase the pressure difference before and after the empty plate; at low flow rates, the pressure difference is very small, making it difficult to measure
Are there any considerations to prevent the formation of vortices?
After the flow rate decreases, it needs to recover; sharp angles facilitate this recovery by reducing turbulence and thus minimizing pressure losses
A standard orifice plate is directional and cannot be installed upside down. The acute angle is at the front, and the obtuse angle is at the back. The purpose is to increase the differential pressure and reduce the vortex pressure loss.
It is by the change in flow velocity that a varying pressure difference is created, thereby measuring the fluid flow rate...