图表示不同二次氮气压力下焰流压力与轴向距离的关系。在不注入高压二次氮气时，20 Nm3/h一次氮气流量所产生的燃烧室内部的最高压强可达到1.641 MPa。在注入二次氮气压力时，2 MPa二次氮气注入情况下，燃烧室内部静态压力为1.98 MPa；3 MPa二次氮气注入情况下，燃烧室内部静态压力为2.921 MPa；4 MPa二次氮气注入情况下，燃烧室内部静态压力为3.887 MPa。相比于只有一次氮气注入的情况，二次氮气明显的提升了燃烧室内部的压力。此外，注入氮气时需考虑燃烧室内部的初始压力，当二次注氮压力小于不注入二次氮气时燃烧室内部初始压力时，二次氮气将无法注入，也就无法发挥该结构的功效。

The graph shows the relationship between flame flow pressure and axial distance at different secondary nitrogen pressures. Without high pressure secondary nitrogen injection, the maximum pressure inside the combustion chamber generated by 20 Nm3/h primary nitrogen flow rate can reach 1.641 MPa. Compared with the case of only primary nitrogen injection, the secondary nitrogen significantly increases the pressure inside the combustion chamber. In addition, the initial pressure inside the combustion chamber should be considered when injecting nitrogen, and when the secondary nitrogen injection pressure is less than the initial pressure inside the combustion chamber without secondary nitrogen injection, the secondary nitrogen will not be injected and the structure will not be effective.