Abstract：Erosion wear is the main abrasion to the jet element of complete fluidic sprinkler.In order to study the effects on the reliability of complete fluidic sprinkler by erosion wear,three failure indexes about complete fluidic sprinkler were defined as droplet diameter of the distal end of sprinkler,stepping frequency and stepping angle.A wear and tear test was conducted under the mass concentration of 1%,2% and 3%.The hydraulic performances were studied in the test,including the changing rules with the time of flux of nozzle,the flux of signal tube and the diameter of droplet at the end of spray.The test results indicate that the extent of the change of hydraulic performance,droplet diameter of the distal end of sprinkler,stepping frequency and stepping angle,increase with the mass concentration,while the effects on hydraulic performance decrease gradually with the mass concentration.Signal Tube 1 is the wearing terrain,so it should be made with wear resistant material to increase the reliability of sprinkler.
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