关键词: 自闭式水封;水封变形;封头接触应力;仿真计算;连续介质力学;

Abstract: In order to overcome the defect of the gate structure’s complexity and the non-durability caused by the traditional pressurization method of the pressure-filled telescopic water seal, a self-closing water seal that utilizes the large deformation of the water seal under reservoir water was designed, thereby eliminating mechanical pressure. The key of this kind of water seal design is to accurately predict the deformation of water seal under various working conditions. Based on the non-linear tensor constitutive relation of the water-sealed rubber material, the non-linear characters of the geometric large deformation and the non-linear characteristic of contact, taking a sharp mountain-like water seal as an example, the self-closing simulation calculation of this kind of water seal was carried out by using continuous medium finite element method, which was also verified by indoor experiments. Simulation and test results showed that the mountain-like rubber water seal can often achieve better self-closure, greatly reduce the construction cost of gate pressure water seal device, facilitate engineering maintenance and improve durability, which has great application value. .

Key words: self-closing water seal; water seal deformation; contact stress at seal head; simulation calculation; continuum mechanics