Discussion on the control interlocks of the loading system
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Almost every project involves control of the loading system, and currently the entire loading system seems to be available as a complete set of equipment, with the process designs being more or less similar. There are mainly two design approaches for measuring the amount loaded: one is weighing using a ground pump, and the other is measurement via a flow meter. It is not yet clear what the advantages and disadvantages of each of these two measurement methods are Please share the controls for the loading systems you have developed.
:Why isn’t anyone responding? ?
The methanol and liquid ammonia loading systems in my *company are metered by flow meters (during loading)； However, the final trade settlement is based on the readings from electronic vehicle scales.
I have not been involved in any loading projects, and I believe that using a mass flow meter for measurement is more convenient and accurate than using a weighbridge.
I have built several explosion-proof fixed-volume loading systems, which use pumps, mass flow meters, multi-stage switch valves along with filters, as well as a fixed-volume loading system; this setup is very convenient, but it certainly requires a higher investment compared to truck scales.
In cases related to trade handover, the scale is generally used as the standard
In cases related to trade handover, the scale is generally used as the reference, while flow meters are used to determine the amount loaded
Vehicle transportation generally uses scales for the final trade settlement. The mass flow meter is installed at the loading dock for loading measurement. It’s generally used. Much of the loading is carried out through pipelines, and the batch control unit at the loading platform sets a specific amount for loading, in a dynamic manner ； Then the vehicle is driven to the ground pump for weighing in order to obtain the final measurement, in a static state.
The loading system is metered by a flow meter (during loading)； However, the final trade settlement is based on the readings from electronic vehicle scales.