LAUSR

ABSTRACT Hydraulic control rod drive technology (HCRDT) is a newly invented patent and Institute of Nuclear and New Energy Technology Tsinghua University owns HCRDT's independent intellectual property rights. The hydraulic cylinder is the key part of this technology, so the performance of the hydraulic cylinder directly affects the function of the integrated valve and the HCRDT. First, the theory Model II which considers the change of inlet velocity has been obtained and the pressure transient has been analyzed. Second, based on the abnormal conditions occurring in the operation of the mechanism, the working performance is obtained and the results are verified by the experiment. Third, the sensitivity analysis of the parameters of hydraulic cylinder was carried out. The results show that the calculated values are in good agreement with the experimental values. The Model II has better numerical stability than the Model I. The influence of various parameters on the operation characteristic of hydraulic cylinder is obtained. The model can be used to analyze and optimize the performance of the HCRDT.