The flow rate in the rear section’s main pipe is greater than that in the front section’s branches
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The flow rate of 17-FT-101 is high; the real-time pressure difference as measured by AMS is 0.74. The real-time flow rate as indicated by the upper-level system is 61 t/h. The measurement range of the upper-level system is 0–450 t, while the differential pressure range is 0–40 kPa. The low-cut value is 31.5 t (7%). The flow rate of 17-FT-101 represents the total flow rate of condensate oil and hydrogenated material. Currently, there is only a flow rate of 14.6 t from the condensate oil, but 17-FT-101 shows a flow rate of 60 t. However, the 14.6 t flow rate is still much lower than the 31.5 t low shear flow rate. The on-site instruments are stopped and reset to zero, but the pipeline gauges still show readings during the shutdown phase; during drainage, liquid is present on the positive pressure side while gas is present on the negative pressure side. The stopwatch is reset when driving; during waste discharge, both positive and negative pressures involve liquid, though the pressure is very low, with the magnitudes of the positive and negative pressures being roughly equal. Is this caused by the liquid not filling the pipeline or by a low flow rate? Why, even after the low-cut setting is applied, does the gauge still show a value that is so much higher than the actual value?
AMS real-time differential pressure: 0.74; upstream system real-time flow rate: 61 t/h; upstream system range: 0–450 t; differential pressure range: 0–40 kPa; low cut-off value: 31.5 t (7%). The calculations are based on these values you provided. A differential pressure of 0.74 corresponds to 61 t/h. Your low shear: 31.5 t (7%) isn’t working. You should check now whether there is a problem with the 17-FT-101 differential pressure gauge Confirmation of the table: is there any drift at zero point? Is the positive and negative pressure flowing smoothly? The confirmation form is fine. You need to check whether the differential pressure value and range of 17-FT-101 match 40 kPa corresponds to 450 t, so the pipeline must be quite thick. The FI-364 flow rate also needs to be verified to ensure it’s correct
Do the various differential pressure ranges correspond to the calculation sheets?
A low-cut flow rate of 31.5 t corresponds to 0.196 kPa. The low-cut point of the flow meter is set based on the differential pressure gauge; since the differential pressure of 0.74 kPa is higher than this low-cut point, a flow rate is displayed. As for whether it is accurate, just check and handle it using the method from Floor 2.