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活门作为气动液压系统的控制元件,在液体火箭的弹体、发动机和伺服机构中应用十分广泛。在保证活门密封的可靠性中,密封面密封比压具有重要意义。它的大小直接反映出活门的密封性能和技术特点,因此测量出密封比压与介质压力、活门座宽度、密封材料力学性能之间的关系,是延长活门使用寿命,提高密封可靠性的根本途径。一、密封原理和比压活门密封是由关闭件和活门座接触表面上产生的密封力来实现的,而密封力是预紧
Valve as a pneumatic hydraulic system control components, liquid rocket projectile, engine and servo mechanism is widely used. In ensuring the reliability of valve sealing, sealing surface pressure than pressure is important. Its size directly reflects the sealing performance and technical characteristics of the valve. Therefore, measuring the relationship between the pressure ratio of seal and the pressure of medium, the width of the valve seat and the mechanical properties of the sealing material is the fundamental way to prolong the service life of the valve and improve the reliability of sealing . First, the principle of the seal and the pressure valve seal is the closing member and valve seat contact surface to produce the sealing force to achieve, and the sealing force is preload