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

A fuel nozzle and flow adjustment technology, applied in combustion methods, combustion chambers, combustion equipment, etc., can solve problems such as difficulty, low efficiency, and scrapped parts, and achieve the effect of ensuring effective qualification, high efficiency, and convenient operation.

Active Publication Date: 2022-03-22
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment

[0040] as attached figure 1 shown, attached figure 1 The middle is a certain type of parallel fuel nozzle. The compression nut on the fuel nozzle is connected to the nozzle housing by welding; in order to ensure that it meets the design requirements, the fuel nozzle needs to be tested after welding. When the test flow is too small, The fuel nozzle is adjusted by the method for adjusting the flow rate of a parallel fuel nozzle after welding described in this embodiment, and the specific adjustment process includes the following steps:

[0041] Step 1. Use a needle gauge to measure the actual size of the main nozzle orifice of the nozzle, and its actual size is Φ=2.5mm;

[0042] Step 2. Select a slender shaft-shaped straight grinding rod with a diameter of Φ=2.45mm as an adjustment tool; the end face of the slender shaft-shaped straight grinding rod is provided with a conical mouth with an opening angle of 120.5°, and the outer diameter of the nozzle auxiliary nozzle 12 The su...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/38
CPCF23R3/38
Inventor 孙辉杨能阁吕阿鹏韩新艳程晓宁刘祥群李晓东张靖
Owner AECC AVIATION POWER CO LTD
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