Pressure-bearing heat exchange device capable of preventing leakage and blockage

The invention relates to the technical field of heat exchange, and discloses an anti-leakage and anti-blocking pressure-bearing heat exchange device which comprises a heat exchange tube body, a supporting plate is arranged on the heat exchange tube body, a false tube is arranged at one end of the heat exchange tube body, and supporting square steel is arranged on the periphery of the heat exchange tube body; the scavenging air valve is mounted at one end, provided with the false tube, of the heat exchange tube body; the water tank is arranged at the other end of the heat exchange tube body; and the leakage and blockage preventing mechanism is arranged between the heat exchange tube body and the water tank, and the leakage and blockage preventing mechanism is used for isolating flue gas from the water tank. Through the arrangement of the scavenging valve, the water tank and the anti-leakage blocking mechanism, the service life of the heat exchange pipe is effectively prolonged, meanwhile, dual-sealing isolatio