Method and apparatus for calculating volume of compressed gas storage vessel, computer, and medium

An apparatus for calculating a volume of a compressed gas storage vessel, the apparatus comprising:

• a connecting module configured to establish a connection between the compressed gas storage system and a gas dispenser, the gas dispenser comprising a hose and at least three test vessels with known volume and initial pressure, the three test vessels being in communication with the compressed gas storage system via the hose, wherein the three test vessels include a first vessel, a second vessel, and a third vessel, wherein the first vessel is in communication with the hose via a first valve, the second vessel is in communication with the hose via a second valve, the third vessel is in communication with the hose via a third valve, and in an initial state, the first valve, the second valve, and the third valve are in a closed state;
• a first pressure value obtaining module configured to open the first valve so that the first vessel is in communication with the compressed gas storage system, to detect a first pressure value of the first vessel, the hose and the compressed gas storage system when a pressure equilibrium state is reached between the first vessel, the gas pipe, and the compressed gas storage system, and then to close the first valve;
• a second pressure value obtaining module configured to open the second valve so that the second vessel is in communication with the compressed gas storage system, to detect a second pressure value of the second vessel, the hose and the compressed gas storage system when a pressure equilibrium state is reached between the second vessel, the hose, and the compressed gas storage system, and then to close the second valve;
• a third pressure value obtaining module configured to open the third valve so that the third vessel is in communication with the compressed gas storage system, and to detect a third pressure value of the third vessel, the hose and the compressed gas storage system when a pressure equilibrium state is reached between the third vessel, the hose, and the compressed gas storage system;
• and
• a volume and pressure calculating module configured to calculate the volume of the compressed gas storage system, a volume of the hose, and a pressure value of the compressed gas storage system in the initial state according to the volumes and initial pressures of the first, second and third vessels, the first pressure value, the second pressure value, and the third pressure value.