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.