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动力工程中使用的安全阀的主要缺点是,由阀件的摩擦、弹簧的刚度和阀所受液体动力作用的变化等造成压力保持的不稳定性和动作滞后。俄罗斯新近研制的一种气垫式安全阀,成功地克服了上述缺点。 这种阀的结构如图所示。活塞2
The main disadvantage of the safety valve used in power engineering is the instability of pressure maintenance and the lag of operation caused by the friction of the valve member, the rigidity of the spring and the change of the dynamic force of the liquid subjected to the valve. Russia recently developed a cushion type safety valve, successfully overcome the above shortcomings. This valve structure as shown. Piston 2