| The hydraulic impulse testing is one of the most basic and main quality testing items of the hydraulic accessories and pipeline joinpieces. This paper aims at instantaneous process of the hydraulic impulse testing machine. On the base of the hydraulic impulse testing machine model, calculate the pipeline system and other hydraulic accessories' influence on the impulse press. Find out the reason that affects the impulse press.First research the water hammer in the hydraulic impulse testing machine, find out the rules of the instantaneous flow and press. Then expatiate the application of the characteristic method in solving hydraulic system instantaneous problem. On the base of those, use characteristic method to build the hydraulic impulse testing machine's model. The final step is calculating According to relevant model. In this step, First calculate the impulse press with the different triers, find out the influence of triers to the impulse press. Then calculate the impulse press with the different pipeline system, hydraulic accumulator, supercharger and oil viscosity. At last, show the result in the forms of chart, also show the main character of the press curve.The simulating and calculating result shows that using characteristic method to build the model of hydraulic impulse testing machine, we can precisely find out the reason that affect the impulse press. It help to improve the impulse press curve and the performance of equipment. |