设置煤油流量10 L/h、氧气流量20 Nm3/h、一次氮气流量20 Nm3/h、二次氮气压力2 MPa（流量等同于28 Nm3/h），利用控制柜监控界面进行60 s燃烧室内部压力实时监测，并绘制燃烧室压力随时间的变化曲线，如图。根据燃烧室压力变化规律，可以将整个过程分为3个时间区间：点火区间、提压区间、稳压区间。点火区间为0-5 s，煤油、氧气、一次氮气及二次氮气不断注入并同时触发点火器，使燃烧室内部煤油-氧气混合物点燃并快速膨胀，导致燃烧室内部气压快速提升；提压区间为5-32 s，此时喷枪内部与喷管口部已经形成焰流，煤油、氧气、一次氮气及二次氮气参数在此区间内缓慢提升至预设值，燃烧室内部气压缓慢提高；稳压区间为32-60 s，此区间的煤油、氧气、一次氮气及二次氮气流量或压力已经达到预设值，燃烧室内部压力基本稳定，可以在此时间区间下展开喷涂工作。

Set kerosene flow rate of 10 L/h, oxygen flow rate of 20 Nm3/h, primary nitrogen flow rate of 20 Nm3/h, secondary nitrogen pressure of 2 MPa (the flow rate is equivalent to 28 Nm3/h), use the control cabinet monitoring interface for 60 s real-time monitoring of the internal pressure of the combustion chamber, and draw the change curve of the combustion chamber pressure with time, as shown in Fig. According to the law of combustion chamber pressure change, the whole process can be divided into 3 time intervals: ignition interval, pressure lifting interval and pressure stabilization interval. The ignition interval is 0-5 s. The kerosene, oxygen, primary nitrogen and secondary nitrogen are continuously injected and trigger the igniter at the same time, so that the kerosene-oxygen mixture inside the combustion chamber ignites and expands rapidly, resulting in a rapid increase in the internal pressure of the combustion chamber; the boost interval is 5-32 s. At this time, the flame flow has been formed inside the gun and the nozzle, and the parameters of kerosene, oxygen, primary nitrogen and secondary nitrogen are slowly raised to the preset value in this interval. preset value, the internal air pressure of the combustion chamber slowly increased; stable pressure interval of 32-60 s, this interval of kerosene, oxygen, primary nitrogen and secondary nitrogen flow or pressure has reached the preset value, the internal pressure of the combustion chamber is basically stable, you can start spraying work under this time interval.