The gas turbine combustor with -10# diesel was changed to one with burn natural gas

and based on the principle of least change of combustor

only the fuel nozzle design was changed. In order to understand the matching characteristics of the nozzle and combustor

three kinds of natural gas nozzles with different injector hole diameters were designed

nozzle could affect the injecting velocity of natural gas

natural gas concentration distribution

therefore

it could affect the combustion performance of combustor. So the combustion performance experiment for these three kinds of natural gas nozzles was carried out. The experimental results show that when the fuel is natural gas

the combustion efficiency increases

but the exit temperature distribution is poor

there is little effect on the wall temperature distribution. Based on the comparative analysis of the experimental results

the combustion performance of natural gas nozzle No.3 is the optimum.