A Method for Replacing the Spray Rod and the Ear Seat of the Afterburner Main

Abstract

The invention discloses a method for replacing a spraying rod and a lug seat of a stressing main pipe. The method includes the following steps that the broken spraying rod or lug seat is cut off along a welding joint on a pipeline of the stressing main pipe, and chippings on the pipeline are removed; the two ends of a welding and cutting notch are blocked; surplus solder on the end face of the notch is removed, the sharp edge of the end face of the notch is hit to be blunt, and blocking of the two ends of the notch is released; the parts, at the two ends of the notch, of the pipeline of the stressing main pipe are removed; gasoline is used for cleaning a part to be welded, and the part to be welded is blown dried; polishing is conducted on the position, to be welded, of the end face of the notch, and the position to be welded is scrubbed; the part to be welded is inserted into the notch, argon is led into an inner cavity of the pipeline for protection, 2-3 points are welded to the position to be welded in a positioning manner, and welding is conducted on the position to be welded along the circumference; after welding is completed, the welded part is checked; vacuum heat treatment is conducted after welding, and welding stress is eliminated; and flow sealing detection is conducted. The broken spraying rod and lug seat on the stressing main pipe are replaced, and therefore the purpose of reducing the repairing cost of an engine is achieved.

Description

Technical field: [0001] The invention relates to the technical field of engine repair, in particular to a method for replacing a spray rod and an ear seat of an afterburner manifold. Background technique: [0002] After the engine has been working for a period of time, the flow and distribution of the afterburner often exceed the standard, such as figure 1 , figure 2 As shown, the afterburner main pipe 1 includes the spray rod 2 and the ear seat 3, and is externally connected with the fuel injection rod 5. When welding between the spray rod 2 and the ear seat 3 and the afterburner main pipe 1, a weld 4 is produced, and the deformation of the spray rod , broken rods, excessive wear of ear seats, cracks on welds, etc. will cause the afterburner manifold to fail, and the afterburner manifold is an important part of the fuel supply system, and its repair quality will directly affect the performance level of the engine. In the worst case, the performance of the main engine wil...

AI Technical Summary

Problems solved by technology

[0002] After the engine has been working for a period of time, the flow and distribution of the afterburner often exceed the standard, such as figure 1 , figure 2 As shown, the afterburner main pipe 1 includes the spray rod 2 and the ear seat 3, and is externally connected with the fuel injection rod 5. When welding between the spray rod 2 and the ear seat 3 and the afterburner main pipe 1, a weld 4 is produced, and the deformation of the spray rod , broken rods, excessive wear of ear seats, cracks on welds, etc. will cause the afterburner manifold to fail, and the afterburner manifold is an important part of the fuel supply system, and its repair quality will directly affect the performance level of the engine. In the worst case, the performance of the main engine will be reduced, and in severe cases, the parts will be burned, which will seriously affect the safety of the engine.

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