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对高压气体压缩机工作的分析表明,在氨的复杂和多级生产系统中最为关键的一部分就是压缩,在这里气体被压缩到320个大气压。压缩机的利用率一般不超过0.93～0.94〔1〕,造成利用率低的主要原因之一,是钢制环形阀片不够可靠。正如压缩机在使用中所表现的,钢制阀片由于材质的疲劳强度低,工作到1300～1400小、时就不行了。此外,由于混合气体的压缩,阀片遭受侵蚀也会降低材料的疲劳强度〔2〕。因此,修理和更换阀片所造成的损失占压缩机总停车时间的20％到50％。提高阀片可靠性和使用寿命的主要方向之一是:采用具有高的单位强度和疲劳强度以及对各种腐蚀性介质具有较
Analysis of the operation of high-pressure gas compressors shows that compression is the most crucial part of the complex and multi-stage ammonia production system where the gas is compressed to 320 atmospheres. Compressor utilization is generally not more than 0.93 ~ 0.94 [1], resulting in low utilization of one of the main reasons is that the steel ring valve is not reliable enough. As the performance of the compressor in use, the steel valve due to the low fatigue strength of the material, work to 1300 ~ 1400 small, when it fails. In addition, due to the mixture of gas compression, valve erosion will also reduce the material fatigue strength 〔2〕. As a result, the damage caused by repairing and replacing the valve plates represents between 20% and 50% of the total compressor stoppage time. One of the main directions to improve the reliability and service life of the valve plate is to use a high unit strength and fatigue strength and a variety of corrosive media have more