Sealing clearance is a key factor for a metal rubber seal＇s sealability. The expansion coef- ficient and expansion deformation in the radial direction of metal rubber have been obtained through a thermal expansion ex...Sealing clearance is a key factor for a metal rubber seal＇s sealability. The expansion coef- ficient and expansion deformation in the radial direction of metal rubber have been obtained through a thermal expansion experiment of metal rubber. The influence of the elastic modulus to the sealing clearance has been analyzed theoretically. By combining the temperature and elasticity factors of metal rubber with the elastic mechanics theory, the calculation formula of the sealing clearance has been derived, and the values of the sealing clearance and the leakage rate in certain working conditions have been calculated. Experimental results are consistent with calculation results in a high degree. The calculation formula of the sealing clearance can explain the influences of the temperature and elastic modulus factors of metal rubber on the sealing clearance. It can pro- vide guidance for the study of sealing mechanism of metal rubber seals.展开更多
基金supported by the Programme of Introducing Talents of Discipline to Universities(No.B07018)the Air Force Armament Department Pre-Research Foundation
文摘Sealing clearance is a key factor for a metal rubber seal＇s sealability. The expansion coef- ficient and expansion deformation in the radial direction of metal rubber have been obtained through a thermal expansion experiment of metal rubber. The influence of the elastic modulus to the sealing clearance has been analyzed theoretically. By combining the temperature and elasticity factors of metal rubber with the elastic mechanics theory, the calculation formula of the sealing clearance has been derived, and the values of the sealing clearance and the leakage rate in certain working conditions have been calculated. Experimental results are consistent with calculation results in a high degree. The calculation formula of the sealing clearance can explain the influences of the temperature and elastic modulus factors of metal rubber on the sealing clearance. It can pro- vide guidance for the study of sealing mechanism of metal rubber seals.
