03-01-2019 дата публикации
Номер: US20190003649A1
The present invention provides a monitoring apparatus for an outlet of a vessel storing gas under pressure. The monitoring apparatus comprises a flow control valve movable to a position between a fully open position and a fully closed position to adjust a flow of gas from the outlet of the vessel, a valve position detector connected to the flow control valve to detect the position of the flow control valve, an internal pressure sensor to sense an internal pressure P(t) of the gas in the vessel at different times, a processor, a memory and an alarm. The processor calculates an actual rate of change in pressure dP/dt of the gas in the vessel over time, and compares dP/dt with an expected rate of change. 1121010a. A monitoring apparatus ( , ) for an outlet () of a vessel () storing gas under pressure , comprising:{'b': 21', '10', '10, 'i': 'a', 'a flow control valve () movable to a position between a fully open position and a fully closed position to adjust a flow of gas from the outlet () of the vessel ();'}{'b': 22', '21', '21, 'a valve position detector () connected to the flow control valve () to detect the position of the flow control valve ();'}{'b': 14', '10, 'sub': 'int', 'an internal pressure sensor () to sense an internal pressure (P(t)) of the gas in the vessel () at different times;'}{'b': 16', '14', '14', '10', '10, 'sub': int', 'int', 'int, 'a processor () connected to the internal pressure sensor () to receive from the internal pressure sensor () the pressure (P(t)) sensed thereby at different times and to calculate an actual rate of change in pressure (dP/dt) of the gas in the vessel () over time from the pressure (P(t)) of the gas in the vessel () sensed at different times;'}{'b': 11', '10', '10', '21, 'sub': int', 'exp, 'a memory () to store a volume of the vessel () and for that volume, an expected rate of change in pressure ((dP/dt)) of the gas in the vessel () for each of a plurality of different positions of the flow control valve ();'}{'b': 16', ...
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