Shale gas-liquid graded suction, pressurization and output integrated regulation and control system and shale gas-liquid graded suction, pressurization and output integrated regulation and control method

The invention discloses an integrated regulation and control system and method for gas-liquid graded suction, pressurization and output of shale gas. The method comprises a gas-liquid mixing suction pry used for enabling wellhead source gas generated by each wellhead of a shale gas platform to enter the gas-liquid mixing suction pry through a gas production pipeline; the gas-liquid mixed suction skid is used for enabling wellhead source gas to enter the pressure grading skid through a gas conveying pipeline; the pressure grading pry is connected with the high-pressure separator and the low-pressure separator and used for controlling wellhead source gas to enter the high-pressure separator or the low-pressure separator; the high-pressure separator is connected with the high-pressure output pipeline and is used for carrying out gas-liquid separation on the wellhead source gas and feeding the separated gas into a gas conveying pipe network through the high-pressure output pipeline; and the low-pressure separator