The work aims to solve the problem that the sealing element of the underwater vehicle propeller seal system is prone to wear failure,causing water leakage when the motor shaft runs at high speed and high pressure.A seal self-repairing system based on tin alloy and original sealing structure for underwater vehicle was designed by the idea of redundancy design.When the original sealing structure failed and leaked water,the self-repairing system controlled the limit tin alloy block for heating and melting,so that the limiting effect of the tin alloy block disappeared,and then released the redundant sealing ring,and pushed the redundant sealing ring into the sealing slot through the action of the tension spring,thus restoring the sealing function of the propeller.In order to verify the reliability of the design,the static analysis of the weak parts of the seal self-repairing structure was carried out by the finite element software ANSYS.The strength simulation results of key compo-nents met the design requirements,and the self-repairing system was successfully started by injecting proper amount of water into the box of the self-repairing experimental device and applying 2 MPa water pressure for a period of time,and its sealing performance sensor did not detect water leakage.The results show that the seal self-repairing system can start smoothly under the condition of water leakage and play the role of sealing,which verifies the feasibility of the design.
维普
万方数据