Movable integrated CNG storage and transportation gas supply device

A movable integrated CNG storage and transportation gas supply device belongs to the field of a compressed natural gas CNG integrated transportation, storage and supply device. The movable integrated CNG storage and transportation gas supply device comprises the following components: a movable integrated high-pressure gas transport vehicle, a gas adding machine which is provided on a sub-station, a pipeline system, an on-station hydraulic movable platform gas storage tank system which is connected with the pipeline system, and a control system which is provided at a gas adding station. The movable integrated high-pressure gas transport vehicle furthermore comprises the following components: a platform trailer (2), a hydraulic automatic unloading system (3) which is placed on the platform trailer (2), and on-vehicle gas storage tank system (1) which is provided on the hydraulic automatic unloading system (3). Through equipping the on-vehicle moving device and the on-station moving device, CNG gas transportation and storage are integrated. Through controlling by a PLC middle control system, the residual gas of the empty tank is transported to other storage tanks in the platform for ensuring that the residual amount of the gas in the empty tank does not exceed 3%. So the residual amount of the gas in the empty tank is greatly lower than 20% in prior art. Transportation cost and a large amount of energy are saved.