一、前言 随着我国国民经济的发展,造船工业也蓬勃地发展起来,船舶工业的产品也进入了国际市场。为了适应这一新的形势,船舶工业部门急切要求我们能提供更多的高性能的新型船舶机电设备,船用空气压缩机就是其中一种。自五十年代末期,我国自行设计的船用空气压缩机已开始批量生产,并且不断地完善,形成了系列,但是产品还存在一些问题,特别表现在气阀的寿命过短等问题。气阀是压气机的关键零件,它不仅影响了空压机的可靠性,同时也 I. Introduction With the development of our national economy, the shipbuilding industry has also developed vigorously. The products of the shipbuilding industry have also entered the international market. In order to adapt to this new situation, the shipbuilding industry urgently urges us to provide more high-performance marine electrical and mechanical equipment, marine air compressors is one of them. Since the late fifties, China’s own design of marine air compressors has begun mass production, and continue to improve, forming a series, but the product still has some problems, especially in the valve life is too short and other issues. Air valve is the key part of the compressor, which not only affects the reliability of air compressor, but also