STATION CONTROL METHOD FOR THE LNG AUTOMATIC FILLING STATION

摘要

FIELD: control methods.;SUBSTANCE: invention relates to the liquefied natural gas automatic filling station controlling method. Method is implemented through the following steps. Step a1: the user's personality identification by the identification device and the refueling process starting. Step a2: checking whether the liquid in the liquid storage tank level is higher at the lower limit station, and if so, giving the user a message that refueling is possible and the Step a3 performance; otherwise, giving the user a message on the display indicating that the fluid level is low, and exit from the refueling process. Step a3: checking whether the submersible pump temperature is lower than the set value, and if so, then performing the Step a4 and repeating the Step a3. Step a4: checking whether the filling button has operated, and if so, the pipeline filling valve turning on and the submersible pump controlling to perform the filling; at that, checking if the submersible pump is operational, and if it is faulty, the refueling piping valve shutting off and the submersible pump controlling to stop refueling, otherwise performing the Step a5. Step a5: checking whether the refueling stopping state is running, and if so, the refueling pipe valve turning off and the submersible pump controlling to stop refueling.;EFFECT: invention can provide for the labor cost savings.;4 cl, 6 dwg