Development of High Pressure Rise Rate Test Platform for Pressure Relief Devices

The overpressure relief device is an important part to ensure the structural safety of the pressure equipment. The existing research on the pressure relief device under high pressure rise rate load was still insufficient. It is very important to ensure that it has accurate action characteristics under the set pressure. If the overpressure relief device cannot act correctly, the structural integrity of the pressure vessel is at risk of damage. In this paper, the experimental platform of high pressure rise rate load is developed. And the influencing factors of high pressure rise rate load are analyzed. Through the theoretical analysis, the factors affecting the pressure rise rate load include the opening rate and opening angle of the quick-opening module, the initial air pressure and the air volume. The experimenter can achieve different pressure rise rate loads by adjusting the heavy objects weight, the heavy objects free fall initial height, the pressurization module output air pressure, and the height of the internal limiter of the energy storage module. Based on experimental validation, the platform can effectively realize high pressure rise rate loads with infinitely adjustable pressure rise rates. The output load pressure rise rate error is within ±1%, which proves that the high pressure rise rate load generated by the experimental platform has reliable repeatability. The developed experimental platform solves the problems of safety, load controllability and repeatability of high pressure rise rate load test. And it provides a basis for the performance research of overpressure relief device.