Hydrogenation reactor is an important equipment of petroleum refining industry, which usually was operated in the environment of high temperature and pressure. The stress distribution of the hydrogenation reactor was very complicated. Especially, the manhole area of the hydrogenation reactor was the high stress area and its security was related to the safe operation of entire equipment. The thermal-structure coupling finite element model of hydrogenation reactor manhole area was established by using ANSYS software. Moreover, the stress analysis and strength evaluation of the manhole area were employed by combining with JB 4732—1995" steel pressure vessel-analysis and design standard ". The results showed that the maximum stress occured in the connecting region of manhole flange and the semicircle head, the maximum stress value was 154.681 0 MPa. The evaluation results illustrated that the manhole area were qualified in the stress strength.

For heat distribution in turbine rotor-bearing system being imbalance, the rotor-bearing system would produce bent and vibrated strongly when it was started up. These would make system running unsafely. The transient imbalance responses of multi-degree rotor-bearing were analyzed respectively, while it was starting and running steadily. Furthermore, the heat vibration characters of the system and the impact caused by temperature distribution and starting acceleration were studied. It provides a reference for reducing the heat vibration amplitude of the rotary machine.