Floating head type heat exchanger pressurizing leak detection device and leak detection method

The invention relates to a floating head type heat exchanger pressurizing leak detection device and leak detection method, the device comprises a pressure test tube which can be inserted into a heat exchange tube, a front end air inlet of the pressure test tube is connected with an outlet of a tee joint, an inlet of the tee joint is communicated with an air outlet of a ball valve, and another passage of the tee joint is provided with a pressure gauge; a front connector is arranged at an air inlet of the ball valve, the rear end of the pressure testing pipe is closed, a rear connector is arranged at the closed end, a sealing cap is screwed on the rear connector, and a plurality of air guide holes are formed in the pipe wall of the middle of the pressure testing pipe. According to the method, the sealed space is formed in the single heat exchange tube, after the pressure test tube is inflated, whether the heat exchange tube leaks or not can be visually judged by observing the pressure change ...