According to the enterprise research app, Blue Rocket Aerospace Technology Co., Ltd. recently announced a patent for “a precooling control method and device for a rocket propellant filling system”. According to the enterprise investigation patent abstract, the method includes: setting up a return pipe between the filling pump outlet line and the storage tank, starting the filling pump to operate at the first frequency, and opening the first control valve of the return pipe; closing the control valve of the return pipe when the gas content of the propellant in the return pipe is lower than the first set value, opening the second control valve between the supercooler and the storage tank, and adjusting the second pressure value of the filling pump to operate according to the second frequency, where the second frequency is greater than the first frequency; when the second pressure value of the supercooler's liquid inlet line and the second pressure value of the supercooler's liquid outlet line are collected in real time, when the second pressure value of the supercooler's liquid outlet line The difference between the value and the first pressure value When it is greater than the second set value, close the filling pump, open the first control valve of the return pipe, and close the second control valve. The control method can improve the reliability of the rocket propellant filling and pre-cooling process.

According to the enterprise research app, Blue Rocket Aerospace Technology Co., Ltd. recently announced a patent for “a precooling control method and device for a rocket propellant filling system”. According to the enterprise investigation patent abstract, the method includes: setting up a return pipe between the filling pump outlet line and the storage tank, starting the filling pump to operate at the first frequency, and opening the first control valve of the return pipe; closing the control valve of the return pipe when the gas content of the propellant in the return pipe is lower than the first set value, opening the second control valve between the supercooler and the storage tank, and adjusting the second pressure value of the filling pump to operate according to the second frequency, where the second frequency is greater than the first frequency; when the second pressure value of the supercooler's liquid inlet line and the second pressure value of the supercooler's liquid outlet line are collected in real time, when the second pressure value of the supercooler's liquid outlet line The difference between the value and the first pressure value When it is greater than the second set value, close the filling pump, open the first control valve of the return pipe, and close the second control valve. The control method can improve the reliability of the rocket propellant filling and pre-cooling process.