Anti-cavitation jet nozzle for ultrasonic detection

The invention relates to the technical field of ultrasonic nondestructive testing, in particular to an anti-cavitation jet nozzle for ultrasonic testing. Comprising nozzle water inlet pipes, a water inlet and a first water filling chamber are arranged at the two ends of each nozzle water inlet pipe respectively, and the three nozzle water inlet pipes are evenly distributed on a base and connected with the base at 45-degree angles; the base is connected with the spray head through threads, and an ultrasonic probe fixture with a contracted streamline-shaped external shape is arranged in the base; an anti-cavitation flow baffle is arranged in the spray head and can influence flowing of water in the spray nozzle, coupling water is promoted to be gathered in front of the ultrasonic probe, and the cavitation phenomenon generated in front of the probe due to the fact that the phased array ultrasonic probe exists in the spray nozzle and influences flowing of the water is reduced. The transition section of the nozzle