Subsea Compensation of Pressure Based on Reducer Bellows  

作　　者：Shihong Xiao Shichao Zhou Linlin Yue Xianyou He Maolin Xiang 

机构地区：[1]College of Mechatronics Engineering,Southwest Petroleum University,Chengdu,610500,China [2]Oil and Gas Equipment Technology Sharing and Service Platform of Sichuan Province,Southwest Petroleum University,Chengdu,610500,China

出　　处：《Fluid Dynamics & Materials Processing》2023年第10期2549-2567,共19页流体力学与材料加工（英文）

基　　金：Key Laboratory of Petroleum and Natural Gas Equipment of Ministry of Education.

摘　　要：In this study,the pressure compensation mechanism of a reducer bellows is analyzed.This device is typically used to reduce the size of undersea instruments and improve related pressure resistance and sealing capabilities.Here,its axial stiffness is studied through a multi-fold approach based on theory,simulations and experiments.The results indicate that the mechanical strength of the reducer bellows,together with the oil volume and temperature are the main factors influencing its performances.In particular,the wall thickness,wave number,middle distance,and wave height are the most influential parameters.For a certain type of reducer bellows,the compensation capacity attains a maximum when the wave number ratio is between 6:6 and 8:4,the wall thickness is 0.3 mm,and the wave height is between 4–5 mm and 5–6 mm.Moreover,the maximum allowable ambient pres-sure of the optimized reducer bellows can reach 62.6 MPa without failure,and the maximum working water depth is 6284 m.

关 键 词：Subsea reducer bellows pressure compensation compressible fluid mechanical strength 

分 类 号：O35[理学—流体力学]