A method for adjusting the flow rate of parallel fuel nozzles after welding

Abstract

The invention provides a method for adjusting the flow rate of a parallel fuel nozzle after welding. First, the actual size of the spray hole of the main nozzle of the nozzle is measured; according to the measured actual size of the spray hole of the main nozzle of the nozzle, a straight grinding rod is selected as an adjustment tool; Among them, the diameter of the straight grinding rod is smaller than the actual size of the nozzle hole of the main nozzle of the nozzle; apply abrasive on the straight grinding rod, and then use the straight grinding rod to repair the main nozzle of the nozzle; when the main nozzle of the nozzle is not blocked, the fuel The nozzle is subjected to flow test until the flow test of the fuel nozzle is qualified; the present invention selects an adjustment tool in combination with the actual size of the nozzle main nozzle orifice, and uses a straight grinding rod with a diameter smaller than the actual size of the nozzle main nozzle nozzle to conduct the nozzle main nozzle nozzle hole. The repair and repair process can effectively avoid damage to the nozzle sub-nozzle, ensure the effective and qualified flow of the parallel fuel nozzle, avoid the decomposition of the fuel nozzle, the adjustment process is less difficult, and the performance of the fuel nozzle is ensured.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and particularly relates to a method for adjusting the flow rate of parallel fuel nozzles after welding. Background technique [0002] Modern aviation fuel nozzles generally use dual oil circuit parallel nozzles. The main and auxiliary oil circuit nozzles are nested, and the main nozzle is generally on the outside. A compression nut is used outside the main nozzle to press the main and auxiliary nozzles on the nozzle. The end face of the oil outlet of the shell; the compression nut of a certain type of parallel aviation fuel nozzle is connected with the nozzle shell by welding. Due to the influence of welding, the compression nut will shrink, which will cause the main oil channel flow area to shrink. The change will lead to the decrease of the flow of the main oil circuit; because the dual-oil circuit parallel nozzle is a nested structure, due to the close distance between the end f...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems existing in the prior art, the present invention provides a method for adjusting the post-weld flow rate of the parallel fuel nozzle to solve the problem that the fuel nozzle needs to be completely disassembled during the post-weld adjustment of the fuel nozzle in the prior art, which is relatively difficult. Large, low efficiency and technical problems that easily lead to scrapped parts

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