Method for ultrasonically detecting crack of water spray pipes of attemperators of boilers

The invention provides a method for ultrasonically detecting crack of water spray pipes of attemperators of boilers. The method for ultrasonically detecting the crack of the water spray pipes of the attemperators of the boilers includes steps of drawing device diagrams of the attemperators in fields; further drawing ultrasonic flaw detection schematic diagrams with the proportions of 1:1; selecting probes according to the ultrasonic flaw detection schematic diagrams; determining the flaw detection sensitivity; identifying crack waves. The dimensional proportions of the device diagrams of the attemperators are 1:1. The method for ultrasonically detecting the crack of the water spray pipes of the attemperators of the boilers has the advantages that the early crack of the water spray pipes of the attemperators can be discovered as early as possible, detection difficult problems can be solved, good detection effects can be realized, and the crack of the water spray pipes of the attemperators of the boilers can be