本文介绍了柔性石墨密封材料径向密封所需施加的轴向力和拧紧力矩的计算。 将此材料用于某型机引气系统的蝶阀上,试验表明,这种密封材料及结构比采用氟橡胶的密封可靠性提高很多,其工作介质温度达450℃。 This article describes the calculation of the axial and tightening torques required for radial sealing of flexible graphite sealing materials. This material is used for the butterfly valve of the bleed air system of a certain type of machine. The tests show that the sealing material and structure have a much higher sealing reliability than the fluorine rubber, and the working medium temperature reaches 450 ° C.