According to the first law of thermadynamics,count internal pressure change of safety valve,define exit pressure of safety valve and silencer.

• 根据热力学第一定律,按照安全阀在排放过程中的物理变化,计算排放过程中各个部位的压力变化,确定安全阀出口法兰的压力等级和消音器的选择。