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本文阐述了通过对钢制蝶阀流量特性的实验研究，导出了风阀开度变化对加热器加热性能影响的公式，并提出几种风阀的适用范围。
This paper expounds the experimental research on the flow characteristics of steel butterfly valve, and derives the formula for the influence of the change of the opening degree of the air valve on the heating performance of the heater, and proposes the applicable range of several types of damper.