Design and performance study on adaptive sealing of a dry cabin for maintenance of submarine pipeline  

作　　者：Jin GUO Xinghui TAN Hai ZHU Jiawang CHEN Shidi JIN Yuanjie CHEN Jie CHEN Ruiduo YIN 

机构地区：[1]Institute of Ocean Engineering and Technology,Zhejiang University,Zhoushan 316021,China [2]Zhejiang Institute of Metrology,Hangzhou 310018,China [3]Hainan Institute,Zhejiang University,Sanya 572025,China [4]Donghai Laboratory,Zhoushan 316021,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2024年第11期908-921,共14页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the Eyas Program Incubation Project of Zhejiang Provincial Administration for Market Regulation(No.CY2023107);the PhD Scientific Research and Innovation Foundation of Sanya Yazhou Bay Science and Technology City(No.HSPHDSRF-2023-04-003);the Scientific Research Fund of Zhejiang Provincial Education Department,China(No.Y202353239);the Zhoushan Field Scientific Observation and Research Station for Marine Geo-hazards,China Geological Survey(No.ZSORS-22-14).

摘　　要：The underwater dry maintenance method based on a dry cabin can achieve the same maintenance quality provided on land.The establishment of a reliable seal between the dry cabin and the pipe is a prerequisite for the formation of a dry environment.In this paper,an airbag is proposed as the means to seal the dry cabin.ABAQUS finite element software was used to study the influence of the physical characteristics of the airbag on deformation characteristics and sealing performance.We also studied the adaptive sealing mechanism of the airbag under the time-varying gap condition.The simulation results show that the peak contact stress of the airbag is close to the gas pressure,so the hardness and thickness of the airbag have little effect on it.Under time-varying gap conditions,the required inflation pressure increases with the size of the gap.The simulated relationship between the gap and the inflation pressure can be referred to in order to guide the control of the air pressure of the airbag during actual operation.Finally,the similarity between the test results and simulation results demonstrates the accuracy of the simulation results.

关 键 词：Submarine pipeline Underwater dry cabin Silicone airbag Sealing perform 

分 类 号：TE973.92[石油与天然气工程—石油机械设备]