Experimental Research on New Type of the Centrifugal Seal for Sealing Gas

Based on the problems of the common centrifugal seal for sealing gas,a structural configuration of the new-type centrifugal seal device with continuous injection and elimination of the sealing fluid is proposed,and the operating principle and feature of the seal is established.The experimental equipment of the centrifugal seal are designed and manufactured.The parameters,including the pressure of the sealing medium,the flow rate and the temperature of the sealing fluid,are measured and collected.The changing regularity of the performance parameter with the spindle speed and the injection pressure of the sealing fluid is considered.The research shows that the new type centrifugal seal is suit for the condition of gas seal at high speed.The higher the speed is,the higher sealing pressure of the medium is and the greater the heat of stirring is.The flow of the sealing fluid is increased and the heat of stirring is carried away by increasing the pressure of the injection sealing fluid.