Methods of alignment of impingement cooling holes and effusion holes in a combustor wall of a gas turbine

The invention relates to a method for the arrangement of effusion holes 32 and the impingement cooling holes 31 in a combustion chamber wall 29 and combustor shingles 30 of a gas turbine, the combustor 15 includes a combustion chamber wall 29 which is provided with impingement cooling holes 31, and combustor shingles 30 which at a distance are provided to the combustion chamber wall 29 and with effusion holes 32, characterized in that the method comprises the following steps: 1) determining the maximum allowed hits, wherein an impingement cooling hole axis meets a Effusionslochmittelpunkt at a distance y and the minimum distance between the hits. 2.) Select the pattern for the effusion 32nd 3.) Determination of the diameter of the effusion holes 32nd 4) Calculation of the dimensions of the basic cell for the effusion holes 32 so that all the holes provided fit into the surface to be cooled. 5) distribution of the effusion holes in the surface to be cooled according to the selection in the second and third 6) selecting the pattern for the impingement cooling holes 31st 7) determining the diameter of the impingement cooling holes 31st 8.) Calculation of the dimensions of the basic cell, so that all intended impingement cooling holes (31) fit into the surface to be cooled. 9) Select the orientation of the basic cell for the impingement cooling holes 31st 10.) distribution of the impingement cooling holes 31 according to the selection in 6 and 7. FIG. 11) Check the number of hits and their distance from each other in consideration of the component and assembly tolerances. 12) compared to the permitted number and the minimum distance. 13) If the quality standards are not met: a.) First, select a different orientation of the basic cell of the impingement cooling holes 31 and go back to 10. b.) If this is not successful, then choose a different diameter of the impingement cooling holes 31 and go back to 8. c.) If this is not successful, then select a different pattern and / or other basic unit of impingement cooling holes 31 and go back to 6. d.) If this is not successful, then choose another Effusionslochdurchmesser and go back to 4. e.) If this is not successful, then select another Effusionslochmuster and go back to the third f.) If this is not successful, the input data check of the sum of the geometrical area of ​​all effusion holes 32, the sum of the areas of all geometric impingement cooling holes 31 and the surface to be cooled. g.) If this is not successful, change the quality specifications.