Drainage Vehicle Telescopic pipe joint's Seal Performance Analysis For Inflatable Sealing Ring

According to the telescoping tube failure problems, and the drainage vehicle displacement is 3000 m3/h, T-shaped inflatable sealing ring parameters were analyzed. Using the finite element software ANSYS to build numerical simulation models. Sealing performance under different inflatable pressures, different assembly spaces and different initial compression ratios is analyzed. The maximum stress, maximum contact stress and maximum shear stress of the sealing ring are the failure criteria. The results showed that different inflation pressure, different assembly clearance and different initial compression ratio have a great influence on the maximum contact stress of the sealing ring. The maximum stress increased with the increasing of inflation pressure and the peak zone of the stress changed when keeping the compression ratio and assembly clearance as a constant. The optimal inflation pressure of the telescoping tube is 0.4~0.6mpa.