Analysis on End-face Temperature of High-speed Oil-Gas Two-Phase Backflow Pumping Seal

2nd International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料工程

Li, S.X.^1 ; Chen, L.^1 ; Li, H.^1 ; Li, S.C.^1 ; Li, Q.Z.^1

College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing, China^1

关键词: Backflow;    End faces;    Lubrication condition;    Oil gas;    Operation parameters;    Pressure differences;    Temperature increase;    Thermo-structural couplings;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/544/1/012034/pdf
DOI  :  10.1088/1757-899X/544/1/012034

来源: IOP

【 摘 要 】

This paper aims to analyze the end-face temperature in the open state & unopened state, and to verify the feasibility of oil-gas two-phase backflow pumping seal (OG-BPS) in oil-gas two-phase lubrication conditions. The thermal boundary, shear heat, heat distribution, convection heat transfer coefficient and other relevant conditions are applied to the theoretical models establishing. The effect of the seal operation parameters such as the speed, pressure difference and liquid-gas ratio on the end-face temperature is analyzed by calculating the thermo-structural coupling models and conducting experiments. The results show that the end-face temperature in the unopened state is much higher than that in the open state, which can be regarded as a criterion for whether the seal works normally. In the open state, the end-face temperature increases slightly with the increase of the rotation speed and liquid-gas ratio. In the unopened state, the end-face temperature increases sharply with the increase of the rotation speed and the pressure difference. However, with the increases of the liquid-gas ratio, the end-face temperature will decrease rapidly, so the oil-gas two-phase medium will be beneficial to start-stop operation. This paper verifies the feasibility of the OG-BPS, and provides a basis for further study of the effect of end temperature on seal performance.