Study on Failure Analysis and Leakage Path Simulation of Control Gate Valve in Natural Gas Transmission Station
In this paper,the failure analysis of chemical composition,metallographic structure,micro-hardness and morphological characteristics on the control gate valve in one natural gas transmission station was carried out to grasp its corrosion and wear in the service of natural gas transmission.In order to further reveal the possible failure mechanism,the finite element analysis method was used to model and calculate the main components such as the valve sleeve and valve core of the gate valve,and the leakage path of the gate valve was discussed and revealed,which provided data support for the inner surface treatment of the gate valve in the later gas transmission station.The research showed that the local corrosion damage of valve sleeve,valve core and valve seat was mainly caused by the erosion corrosion of natural gas containing a very small amount of H2O,high CO2 and trace H2S and a very small amount of sand.
valve sleeve and corecorrosionwearcorrosionleakagefinite element analysis
NETL
NSTL
万方数据
