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There are a main pipe flow meter and 6 branch pipe flow meters for coke oven gas, all of which are equipped with temperature and pressure compensation. In the northern regions, recently, as the temperature has risen, the difference between the main pipe flow rate and the branch pipe flow rates has become quite significant. Could everyone please help analyze this phenomenon?
It may be that the increase in temperature causes the gas to expand, resulting in changes in the flow rate measured by the flow meter. Additionally, it could also be due to measurement errors of the flow meter itself or inadequate maintenance. It is recommended to check the calibration status and maintenance records of the flow meter, and recalibrate and maintain it if necessary. It is also necessary to check the installation location of the flow meter as well as the pipes for any issues such as leaks or blockages. Finally, check whether the temperature and pressure compensation system is working properly. .
There is always a difference between the maximum reading and the minimum reading; if there were no such difference at all, then installing a flow meter would be pointless
Senior, please explain this phenomenon in detail! I’ve encountered this problem many times; I’m quite interested in it :)
This post was last edited by qugd on 2024-4-11 09:03. There’s not much to say here; this is just the way errors accumulate. The derivative of a sum of functions is essentially equal to the sum of the derivatives of each individual function. The numerical values of these derivatives can cancel each other out, but it’s relatively rare for the derivatives themselves to cancel out. It’s sufficient to take the absolute values of the derivative variables. This should be easy to understand