I hope the experts here can help me calculate the diameter of the flow control orifice plate
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Our company has a lock-hopper circulation pump for gasification furnaces; the medium is gasification slag water. Temperature: 80°C. Pressure: 7.0mpa. Current flow rate: 160 m3/H. Due to an incorrect pump selection, the ball valve at the pump outlet cannot be fully opened; otherwise, the motor would overload and shut down. Therefore, the flow rate has to be controlled by adjusting the opening degree of the ball valve in order to prevent motor overload and shutdown. However, the medium flowing through the valve causes severe erosion of the valve body, which often leads to leaks in the valve body. I have already applied the maximum allowable amount of cutting to the impeller. The issue of motor overload and shutdown when the outlet ball valve is fully open has been resolved, but the flow rate in the pipeline remains higher than the designed value, resulting in severe erosion of the pipeline. I plan to install a flow control orifice plate in the pipeline to keep the flow rate within the designed level of 60 m3/H. I would appreciate it if someone could help me calculate the diameter of this orifice plate. Thank you.
Take a look at HG20570.15. I’ve also been learning about orifice plates recently; see if you can calculate it using the standards. The parameters you provided are insufficient. Based on what I’ve learned in these past few days, it seems that you haven’t specified the back pressure desired for the orifice plate, so how can anyone help you with the calculation? Also, isn’t it problematic for this pump to operate at low load for extended periods of time?