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本文针对变动背压与安全阀性能的关系问题进行了理论分析,并提出了变动背压对安全阀排放压力及回座压力影响的数学表达式。在此基础上,作者提出了两种克服变动背压对性能影响的新结构,对其中的一种结构进行了试验验证,结果表明,其性能有了很大的提高。
In this paper, the relationship between variable back pressure and safety valve performance is analyzed theoretically, and the mathematical expression of the influence of back pressure on safety valve discharge pressure and back pressure is proposed. On this basis, the authors propose two new structures to overcome the effect of the varying backpressure on the performance. One of the structures has been tested and verified. The results show that the performance has been greatly improved.