Strength Analysis of Threaded Quick Opening Structure of High-Pressure Reactor
In order to solve the problem of the difficulty in meeting the requirements for temperature uniformity during medium operation in the commonly used clamp type and teeth-locked type quick opening structure reactors in engineering,a threaded quick opening structure reactor device with good temperature uniformity performance was designed to improve the production quality of TPU materials.Three finite element models of quick opening structures,namely,flat cover,bowl cover,and convex cover were established to analyze the stress distribution of the screw threads and evaluate the stress intensity under design pressure and thermal-stress coupling conditions.The results show that the root stress of the internal thread at the end of the three types of quick opening structures is higher than that of the external thread of the kettle cover as a whole,and the stress decreases as the number of threads increases.The maximum stress of the three under both conditions occurs at the root of the first thread.When considering the impact of temperature load,the thermal stress increases by 13.97%,9.30%,and 4.79%,respectively,the stress and fatigue strength meet the requirements.The comparison shows that the comprehensive performance of the convex cover threaded quick opening structure for bearing pressure and temperature is better.
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维普
