Full-automatic pipe cleaning and ball serving device and using method thereof

The invention discloses a full-automatic pipe cleaning and ball serving device and a using method thereof. The full-automatic pipe cleaning and ball serving device comprises a ball serving pipe section, a pipe cleaning ball valve B, an automatic ball changing mechanism and a hydraulic system which are connected in sequence; the ball serving pipe section is composed of a pipe with the same pipe diameter as a gas conveying pipe; the ball serving pipe section is provided with one end connected with the gas conveying pipe, and the other end of the ball serving pipe section is connected with the pipe cleaning ball valve B; the ball serving pipe section is provided with a pressure sensor; the hydraulic system comprises a hydraulic cylinder; the end, away from the ball serving pipe section, of the pipe cleaning ball valve B is connected with the automatic ball changing mechanism, and the end, away from the pipe cleaning ball valve B, of the automatic ball changing mechanism is connected with the hydraulic cylinder;